diff options
Diffstat (limited to 'drivers/usb/gadget')
120 files changed, 7613 insertions, 12664 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 336db8f92afa..76521555e3c1 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -190,6 +190,7 @@ config USB_F_MASS_STORAGE tristate config USB_F_FS + select DMA_SHARED_BUFFER tristate config USB_F_UAC1 @@ -208,6 +209,11 @@ config USB_F_UVC config USB_F_MIDI tristate +config USB_F_MIDI2 + tristate + select SND_UMP + select SND_UMP_LEGACY_RAWMIDI + config USB_F_HID tristate @@ -436,6 +442,19 @@ config USB_CONFIGFS_F_MIDI connections can then be made on the gadget system, using ALSA's aconnect utility etc. +config USB_CONFIGFS_F_MIDI2 + bool "MIDI 2.0 function" + depends on USB_CONFIGFS + depends on SND + select USB_LIBCOMPOSITE + select USB_F_MIDI2 + help + The MIDI 2.0 function driver provides the generic emulated + USB MIDI 2.0 interface, looped back to ALSA UMP rawmidi + device on the gadget host. It supports UMP 1.1 spec and + responds UMP Stream messages for UMP Endpoint and Function + Block information / configuration. + config USB_CONFIGFS_F_HID bool "HID function" depends on USB_CONFIGFS diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index dd9b90481b4c..5b3866909b75 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -19,7 +19,7 @@ #include <linux/usb/composite.h> #include <linux/usb/otg.h> #include <linux/usb/webusb.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "u_os_desc.h" @@ -170,33 +170,27 @@ int config_ep_by_speed_and_alt(struct usb_gadget *g, /* select desired speed */ switch (g->speed) { case USB_SPEED_SUPER_PLUS: - if (gadget_is_superspeed_plus(g)) { - if (f->ssp_descriptors) { - speed_desc = f->ssp_descriptors; - want_comp_desc = 1; - break; - } - incomplete_desc = true; + if (f->ssp_descriptors) { + speed_desc = f->ssp_descriptors; + want_comp_desc = 1; + break; } + incomplete_desc = true; fallthrough; case USB_SPEED_SUPER: - if (gadget_is_superspeed(g)) { - if (f->ss_descriptors) { - speed_desc = f->ss_descriptors; - want_comp_desc = 1; - break; - } - incomplete_desc = true; + if (f->ss_descriptors) { + speed_desc = f->ss_descriptors; + want_comp_desc = 1; + break; } + incomplete_desc = true; fallthrough; case USB_SPEED_HIGH: - if (gadget_is_dualspeed(g)) { - if (f->hs_descriptors) { - speed_desc = f->hs_descriptors; - break; - } - incomplete_desc = true; + if (f->hs_descriptors) { + speed_desc = f->hs_descriptors; + break; } + incomplete_desc = true; fallthrough; default: speed_desc = f->fs_descriptors; @@ -1017,7 +1011,7 @@ static int set_config(struct usb_composite_dev *cdev, ep = (struct usb_endpoint_descriptor *)*descriptors; addr = ((ep->bEndpointAddress & 0x80) >> 3) - | (ep->bEndpointAddress & 0x0f); + | usb_endpoint_num(ep); set_bit(addr, f->endpoints); } @@ -1056,10 +1050,11 @@ static int set_config(struct usb_composite_dev *cdev, else usb_gadget_set_remote_wakeup(gadget, 0); done: - if (power <= USB_SELF_POWER_VBUS_MAX_DRAW) - usb_gadget_set_selfpowered(gadget); - else + if (power > USB_SELF_POWER_VBUS_MAX_DRAW || + (c && !(c->bmAttributes & USB_CONFIG_ATT_SELFPOWER))) usb_gadget_clear_selfpowered(gadget); + else + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, power); if (result >= 0 && cdev->delayed_status) @@ -1199,30 +1194,6 @@ static void remove_config(struct usb_composite_dev *cdev, } } -/** - * usb_remove_config() - remove a configuration from a device. - * @cdev: wraps the USB gadget - * @config: the configuration - * - * Drivers must call usb_gadget_disconnect before calling this function - * to disconnect the device from the host and make sure the host will not - * try to enumerate the device while we are changing the config list. - */ -void usb_remove_config(struct usb_composite_dev *cdev, - struct usb_configuration *config) -{ - unsigned long flags; - - spin_lock_irqsave(&cdev->lock, flags); - - if (cdev->config == config) - reset_config(cdev); - - spin_unlock_irqrestore(&cdev->lock, flags); - - remove_config(cdev, config); -} - /*-------------------------------------------------------------------------*/ /* We support strings in multiple languages ... string descriptor zero @@ -1850,7 +1821,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) cdev->desc.bcdUSB = cpu_to_le16(0x0200); } - value = min(w_length, (u16) sizeof cdev->desc); + value = min_t(u16, w_length, sizeof(cdev->desc)); memcpy(req->buf, &cdev->desc, value); break; case USB_DT_DEVICE_QUALIFIER: @@ -1869,19 +1840,19 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_DT_CONFIG: value = config_desc(cdev, w_value); if (value >= 0) - value = min(w_length, (u16) value); + value = min_t(u16, w_length, value); break; case USB_DT_STRING: value = get_string(cdev, req->buf, w_index, w_value & 0xff); if (value >= 0) - value = min(w_length, (u16) value); + value = min_t(u16, w_length, value); break; case USB_DT_BOS: if (gadget_is_superspeed(gadget) || gadget->lpm_capable || cdev->use_webusb) { value = bos_desc(cdev); - value = min(w_length, (u16) value); + value = min_t(u16, w_length, value); } break; case USB_DT_OTG: @@ -1936,7 +1907,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) *(u8 *)req->buf = cdev->config->bConfigurationValue; else *(u8 *)req->buf = 0; - value = min(w_length, (u16) 1); + value = min_t(u16, w_length, 1); break; /* function drivers must handle get/set altsetting */ @@ -1982,7 +1953,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) if (value < 0) break; *((u8 *)req->buf) = value; - value = min(w_length, (u16) 1); + value = min_t(u16, w_length, 1); break; case USB_REQ_GET_STATUS: if (gadget_is_otg(gadget) && gadget->hnp_polling_support && @@ -2016,15 +1987,13 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) if (f->get_status) { status = f->get_status(f); + if (status < 0) break; - } else { - /* Set D0 and D1 bits based on func wakeup capability */ - if (f->config->bmAttributes & USB_CONFIG_ATT_WAKEUP) { - status |= USB_INTRF_STAT_FUNC_RW_CAP; - if (f->func_wakeup_armed) - status |= USB_INTRF_STAT_FUNC_RW; - } + + /* if D5 is not set, then device is not wakeup capable */ + if (!(f->config->bmAttributes & USB_CONFIG_ATT_WAKEUP)) + status &= ~(USB_INTRF_STAT_FUNC_RW_CAP | USB_INTRF_STAT_FUNC_RW); } put_unaligned_le16(status & 0x0000ffff, req->buf); @@ -2117,6 +2086,18 @@ unknown: memset(buf, 0, w_length); buf[5] = 0x01; switch (ctrl->bRequestType & USB_RECIP_MASK) { + /* + * The Microsoft CompatID OS Descriptor Spec(w_index = 0x4) and + * Extended Prop OS Desc Spec(w_index = 0x5) state that the + * HighByte of wValue is the InterfaceNumber and the LowByte is + * the PageNumber. This high/low byte ordering is incorrectly + * documented in the Spec. USB analyzer output on the below + * request packets show the high/low byte inverted i.e LowByte + * is the InterfaceNumber and the HighByte is the PageNumber. + * Since we dont support >64KB CompatID/ExtendedProp descriptors, + * PageNumber is set to 0. Hence verify that the HighByte is 0 + * for below two cases. + */ case USB_RECIP_DEVICE: if (w_index != 0x4 || (w_value >> 8)) break; @@ -2484,6 +2465,11 @@ int composite_os_desc_req_prepare(struct usb_composite_dev *cdev, if (!cdev->os_desc_req->buf) { ret = -ENOMEM; usb_ep_free_request(ep0, cdev->os_desc_req); + /* + * Set os_desc_req to NULL so that composite_dev_cleanup() + * will not try to free it again. + */ + cdev->os_desc_req = NULL; goto end; } cdev->os_desc_req->context = cdev; @@ -2609,7 +2595,10 @@ void composite_suspend(struct usb_gadget *gadget) cdev->suspended = 1; - usb_gadget_set_selfpowered(gadget); + if (cdev->config && + cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER) + usb_gadget_set_selfpowered(gadget); + usb_gadget_vbus_draw(gadget, 2); } @@ -2643,8 +2632,11 @@ void composite_resume(struct usb_gadget *gadget) else maxpower = min(maxpower, 900U); - if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW) + if (maxpower > USB_SELF_POWER_VBUS_MAX_DRAW || + !(cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER)) usb_gadget_clear_selfpowered(gadget); + else + usb_gadget_set_selfpowered(gadget); usb_gadget_vbus_draw(gadget, maxpower); } else { @@ -2805,5 +2797,6 @@ void usb_composite_overwrite_options(struct usb_composite_dev *cdev, } EXPORT_SYMBOL_GPL(usb_composite_overwrite_options); +MODULE_DESCRIPTION("infrastructure for Composite USB Gadgets"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c index 05507606b2b4..256364d4b941 100644 --- a/drivers/usb/gadget/config.c +++ b/drivers/usb/gadget/config.c @@ -54,59 +54,6 @@ usb_descriptor_fillbuf(void *buf, unsigned buflen, EXPORT_SYMBOL_GPL(usb_descriptor_fillbuf); /** - * usb_gadget_config_buf - builts a complete configuration descriptor - * @config: Header for the descriptor, including characteristics such - * as power requirements and number of interfaces. - * @desc: Null-terminated vector of pointers to the descriptors (interface, - * endpoint, etc) defining all functions in this device configuration. - * @buf: Buffer for the resulting configuration descriptor. - * @length: Length of buffer. If this is not big enough to hold the - * entire configuration descriptor, an error code will be returned. - * - * This copies descriptors into the response buffer, building a descriptor - * for that configuration. It returns the buffer length or a negative - * status code. The config.wTotalLength field is set to match the length - * of the result, but other descriptor fields (including power usage and - * interface count) must be set by the caller. - * - * Gadget drivers could use this when constructing a config descriptor - * in response to USB_REQ_GET_DESCRIPTOR. They will need to patch the - * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed. - */ -int usb_gadget_config_buf( - const struct usb_config_descriptor *config, - void *buf, - unsigned length, - const struct usb_descriptor_header **desc -) -{ - struct usb_config_descriptor *cp = buf; - int len; - - /* config descriptor first */ - if (length < USB_DT_CONFIG_SIZE || !desc) - return -EINVAL; - *cp = *config; - - /* then interface/endpoint/class/vendor/... */ - len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8 *)buf, - length - USB_DT_CONFIG_SIZE, desc); - if (len < 0) - return len; - len += USB_DT_CONFIG_SIZE; - if (len > 0xffff) - return -EINVAL; - - /* patch up the config descriptor */ - cp->bLength = USB_DT_CONFIG_SIZE; - cp->bDescriptorType = USB_DT_CONFIG; - cp->wTotalLength = cpu_to_le16(len); - cp->bmAttributes |= USB_CONFIG_ATT_ONE; - return len; -} -EXPORT_SYMBOL_GPL(usb_gadget_config_buf); - -/** * usb_copy_descriptors - copy a vector of USB descriptors * @src: null-terminated vector to copy * Context: initialization code, which may sleep @@ -162,8 +109,6 @@ int usb_assign_descriptors(struct usb_function *f, struct usb_descriptor_header **ss, struct usb_descriptor_header **ssp) { - struct usb_gadget *g = f->config->cdev->gadget; - /* super-speed-plus descriptor falls back to super-speed one, * if such a descriptor was provided, thus avoiding a NULL * pointer dereference if a 5gbps capable gadget is used with @@ -177,17 +122,17 @@ int usb_assign_descriptors(struct usb_function *f, if (!f->fs_descriptors) goto err; } - if (hs && gadget_is_dualspeed(g)) { + if (hs) { f->hs_descriptors = usb_copy_descriptors(hs); if (!f->hs_descriptors) goto err; } - if (ss && gadget_is_superspeed(g)) { + if (ss) { f->ss_descriptors = usb_copy_descriptors(ss); if (!f->ss_descriptors) goto err; } - if (ssp && gadget_is_superspeed_plus(g)) { + if (ssp) { f->ssp_descriptors = usb_copy_descriptors(ssp); if (!f->ssp_descriptors) goto err; diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 4c639e9ddedc..6bcac85c5550 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -6,13 +6,13 @@ #include <linux/kstrtox.h> #include <linux/nls.h> #include <linux/usb/composite.h> +#include <linux/usb/func_utils.h> #include <linux/usb/gadget_configfs.h> #include <linux/usb/webusb.h> #include "configfs.h" -#include "u_f.h" #include "u_os_desc.h" -int check_user_usb_string(const char *name, +static int check_user_usb_string(const char *name, struct usb_gadget_strings *stringtab_dev) { u16 num; @@ -115,9 +115,12 @@ static int usb_string_copy(const char *s, char **s_copy) int ret; char *str; char *copy = *s_copy; + ret = strlen(s); if (ret > USB_MAX_STRING_LEN) return -EOVERFLOW; + if (ret < 1) + return -EINVAL; if (copy) { str = copy; @@ -606,10 +609,11 @@ static struct config_group *function_make( char *instance_name; int ret; - ret = snprintf(buf, MAX_NAME_LEN, "%s", name); - if (ret >= MAX_NAME_LEN) + if (strlen(name) >= MAX_NAME_LEN) return ERR_PTR(-ENAMETOOLONG); + scnprintf(buf, MAX_NAME_LEN, "%s", name); + func_name = buf; instance_name = strchr(func_name, '.'); if (!instance_name) { @@ -701,10 +705,12 @@ static struct config_group *config_desc_make( int ret; gi = container_of(group, struct gadget_info, configs_group); - ret = snprintf(buf, MAX_NAME_LEN, "%s", name); - if (ret >= MAX_NAME_LEN) + + if (strlen(name) >= MAX_NAME_LEN) return ERR_PTR(-ENAMETOOLONG); + scnprintf(buf, MAX_NAME_LEN, "%s", name); + num_str = strchr(buf, '.'); if (!num_str) { pr_err("Unable to locate . in name.bConfigurationValue\n"); @@ -812,7 +818,7 @@ static ssize_t gadget_string_s_show(struct config_item *item, char *page) struct gadget_string *string = to_gadget_string(item); int ret; - ret = snprintf(page, sizeof(string->string), "%s\n", string->string); + ret = sysfs_emit(page, "%s\n", string->string); return ret; } @@ -821,11 +827,15 @@ static ssize_t gadget_string_s_store(struct config_item *item, const char *page, { struct gadget_string *string = to_gadget_string(item); int size = min(sizeof(string->string), len + 1); + ssize_t cpy_len; if (len > USB_MAX_STRING_LEN) return -EINVAL; - return strscpy(string->string, page, size); + cpy_len = strscpy(string->string, page, size); + if (cpy_len > 0 && string->string[cpy_len - 1] == '\n') + string->string[cpy_len - 1] = 0; + return len; } CONFIGFS_ATTR(gadget_string_, s); @@ -896,7 +906,7 @@ static struct configfs_group_operations gadget_language_langid_group_ops = { .drop_item = gadget_language_string_drop, }; -static struct config_item_type gadget_language_type = { +static const struct config_item_type gadget_language_type = { .ct_item_ops = &gadget_language_langid_item_ops, .ct_group_ops = &gadget_language_langid_group_ops, .ct_attrs = gadget_language_langid_attrs, @@ -955,7 +965,7 @@ static struct configfs_group_operations gadget_language_group_ops = { .drop_item = &gadget_language_drop, }; -static struct config_item_type gadget_language_strings_type = { +static const struct config_item_type gadget_language_strings_type = { .ct_group_ops = &gadget_language_group_ops, .ct_owner = THIS_MODULE, }; @@ -1055,6 +1065,8 @@ static ssize_t webusb_landingPage_store(struct config_item *item, const char *pa unsigned int bytes_to_strip = 0; int l = len; + if (!len) + return len; if (page[l - 1] == '\n') { --l; ++bytes_to_strip; @@ -1100,7 +1112,7 @@ static struct configfs_attribute *webusb_attrs[] = { NULL, }; -static struct config_item_type webusb_type = { +static const struct config_item_type webusb_type = { .ct_attrs = webusb_attrs, .ct_owner = THIS_MODULE, }; @@ -1178,7 +1190,9 @@ static ssize_t os_desc_qw_sign_store(struct config_item *item, const char *page, struct gadget_info *gi = os_desc_item_to_gadget_info(item); int res, l; - l = min((int)len, OS_STRING_QW_SIGN_LEN >> 1); + if (!len) + return len; + l = min_t(int, len, OS_STRING_QW_SIGN_LEN >> 1); if (page[l - 1] == '\n') --l; @@ -1257,7 +1271,7 @@ static struct configfs_item_operations os_desc_ops = { .drop_link = os_desc_unlink, }; -static struct config_item_type os_desc_type = { +static const struct config_item_type os_desc_type = { .ct_item_ops = &os_desc_ops, .ct_attrs = os_desc_attrs, .ct_owner = THIS_MODULE, @@ -1736,6 +1750,8 @@ static int configfs_composite_bind(struct usb_gadget *gadget, cdev->use_os_string = true; cdev->b_vendor_code = gi->b_vendor_code; memcpy(cdev->qw_sign, gi->qw_sign, OS_STRING_QW_SIGN_LEN); + } else { + cdev->use_os_string = false; } if (gadget_is_otg(gadget) && !otg_desc[0]) { diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index ed5a92c474e5..30016b805bfd 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -158,7 +158,7 @@ struct usb_ep *usb_ep_autoconfig( if (!ep) return NULL; - type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + type = usb_endpoint_type(desc); /* report (variable) full speed bulk maxpacket */ if (type == USB_ENDPOINT_XFER_BULK) { diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile index 5d3a6cf02218..7ce1637276f0 100644 --- a/drivers/usb/gadget/function/Makefile +++ b/drivers/usb/gadget/function/Makefile @@ -41,9 +41,15 @@ obj-$(CONFIG_USB_F_UAC1_LEGACY) += usb_f_uac1_legacy.o usb_f_uac2-y := f_uac2.o obj-$(CONFIG_USB_F_UAC2) += usb_f_uac2.o usb_f_uvc-y := f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o +ifneq ($(CONFIG_TRACING),) + CFLAGS_uvc_trace.o := -I$(src) + usb_f_uvc-y += uvc_trace.o +endif obj-$(CONFIG_USB_F_UVC) += usb_f_uvc.o usb_f_midi-y := f_midi.o obj-$(CONFIG_USB_F_MIDI) += usb_f_midi.o +usb_f_midi2-y := f_midi2.o +obj-$(CONFIG_USB_F_MIDI2) += usb_f_midi2.o usb_f_hid-y := f_hid.o obj-$(CONFIG_USB_F_HID) += usb_f_hid.o usb_f_printer-y := f_printer.o diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c index cb523f118f04..106046e17c4e 100644 --- a/drivers/usb/gadget/function/f_acm.c +++ b/drivers/usb/gadget/function/f_acm.c @@ -11,12 +11,15 @@ /* #define VERBOSE_DEBUG */ +#include <linux/cleanup.h> #include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/device.h> #include <linux/err.h> +#include <linux/usb/gadget.h> + #include "u_serial.h" @@ -41,6 +44,7 @@ struct f_acm { struct gserial port; u8 ctrl_id, data_id; u8 port_num; + u8 bInterfaceProtocol; u8 pending; @@ -89,7 +93,7 @@ acm_iad_descriptor = { .bInterfaceCount = 2, // control + data .bFunctionClass = USB_CLASS_COMM, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, - .bFunctionProtocol = USB_CDC_ACM_PROTO_AT_V25TER, + /* .bFunctionProtocol = DYNAMIC */ /* .iFunction = DYNAMIC */ }; @@ -101,7 +105,7 @@ static struct usb_interface_descriptor acm_control_interface_desc = { .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_COMM, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, - .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, + /* .bInterfaceProtocol = DYNAMIC */ /* .iInterface = DYNAMIC */ }; @@ -612,6 +616,7 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) struct usb_string *us; int status; struct usb_ep *ep; + struct usb_request *request __free(free_usb_request) = NULL; /* REVISIT might want instance-specific strings to help * distinguish instances ... @@ -629,7 +634,7 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific interface IDs, and patch descriptors */ status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; acm->ctrl_id = status; acm_iad_descriptor.bFirstInterface = status; @@ -638,40 +643,41 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; acm->data_id = status; acm_data_interface_desc.bInterfaceNumber = status; acm_union_desc.bSlaveInterface0 = status; acm_call_mgmt_descriptor.bDataInterface = status; - status = -ENODEV; - /* allocate instance-specific endpoints */ ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_in_desc); if (!ep) - goto fail; + return -ENODEV; acm->port.in = ep; ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_out_desc); if (!ep) - goto fail; + return -ENODEV; acm->port.out = ep; ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_notify_desc); if (!ep) - goto fail; + return -ENODEV; acm->notify = ep; + acm_iad_descriptor.bFunctionProtocol = acm->bInterfaceProtocol; + acm_control_interface_desc.bInterfaceProtocol = acm->bInterfaceProtocol; + /* allocate notification */ - acm->notify_req = gs_alloc_req(ep, - sizeof(struct usb_cdc_notification) + 2, - GFP_KERNEL); - if (!acm->notify_req) - goto fail; + request = gs_alloc_req(ep, + sizeof(struct usb_cdc_notification) + 2, + GFP_KERNEL); + if (!request) + return -ENODEV; - acm->notify_req->complete = acm_cdc_notify_complete; - acm->notify_req->context = acm; + request->complete = acm_cdc_notify_complete; + request->context = acm; /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at @@ -688,24 +694,16 @@ acm_bind(struct usb_configuration *c, struct usb_function *f) status = usb_assign_descriptors(f, acm_fs_function, acm_hs_function, acm_ss_function, acm_ss_function); if (status) - goto fail; + return status; + + acm->notify_req = no_free_ptr(request); dev_dbg(&cdev->gadget->dev, - "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n", + "acm ttyGS%d: IN/%s OUT/%s NOTIFY/%s\n", acm->port_num, - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", acm->port.in->name, acm->port.out->name, acm->notify->name); return 0; - -fail: - if (acm->notify_req) - gs_free_req(acm->notify, acm->notify_req); - - ERROR(cdev, "%s/%p: can't bind, err %d\n", f->name, f, status); - - return status; } static void acm_unbind(struct usb_configuration *c, struct usb_function *f) @@ -721,8 +719,14 @@ static void acm_unbind(struct usb_configuration *c, struct usb_function *f) static void acm_free_func(struct usb_function *f) { struct f_acm *acm = func_to_acm(f); + struct f_serial_opts *opts; + + opts = container_of(f->fi, struct f_serial_opts, func_inst); kfree(acm); + mutex_lock(&opts->lock); + opts->instances--; + mutex_unlock(&opts->lock); } static void acm_resume(struct usb_function *f) @@ -763,7 +767,11 @@ static struct usb_function *acm_alloc_func(struct usb_function_instance *fi) acm->port.func.disable = acm_disable; opts = container_of(fi, struct f_serial_opts, func_inst); + mutex_lock(&opts->lock); acm->port_num = opts->port_num; + acm->bInterfaceProtocol = opts->protocol; + opts->instances++; + mutex_unlock(&opts->lock); acm->port.func.unbind = acm_unbind; acm->port.func.free_func = acm_free_func; acm->port.func.resume = acm_resume; @@ -814,11 +822,42 @@ static ssize_t f_acm_port_num_show(struct config_item *item, char *page) CONFIGFS_ATTR_RO(f_acm_, port_num); +static ssize_t f_acm_protocol_show(struct config_item *item, char *page) +{ + return sprintf(page, "%u\n", to_f_serial_opts(item)->protocol); +} + +static ssize_t f_acm_protocol_store(struct config_item *item, + const char *page, size_t count) +{ + struct f_serial_opts *opts = to_f_serial_opts(item); + int ret; + + mutex_lock(&opts->lock); + + if (opts->instances) { + ret = -EBUSY; + goto out; + } + + ret = kstrtou8(page, 0, &opts->protocol); + if (ret) + goto out; + ret = count; + +out: + mutex_unlock(&opts->lock); + return ret; +} + +CONFIGFS_ATTR(f_acm_, protocol); + static struct configfs_attribute *acm_attrs[] = { #ifdef CONFIG_U_SERIAL_CONSOLE &f_acm_attr_console, #endif &f_acm_attr_port_num, + &f_acm_attr_protocol, NULL, }; @@ -834,6 +873,7 @@ static void acm_free_instance(struct usb_function_instance *fi) opts = container_of(fi, struct f_serial_opts, func_inst); gserial_free_line(opts->port_num); + mutex_destroy(&opts->lock); kfree(opts); } @@ -845,7 +885,9 @@ static struct usb_function_instance *acm_alloc_instance(void) opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); + opts->protocol = USB_CDC_ACM_PROTO_AT_V25TER; opts->func_inst.free_func_inst = acm_free_instance; + mutex_init(&opts->lock); ret = gserial_alloc_line(&opts->port_num); if (ret) { kfree(opts); @@ -856,4 +898,5 @@ static struct usb_function_instance *acm_alloc_instance(void) return &opts->func_inst; } DECLARE_USB_FUNCTION_INIT(acm, acm_alloc_instance, acm_alloc_func); +MODULE_DESCRIPTION("USB CDC serial (ACM) function driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c index c6e63ad77a40..675d2bc538a4 100644 --- a/drivers/usb/gadget/function/f_ecm.c +++ b/drivers/usb/gadget/function/f_ecm.c @@ -8,11 +8,15 @@ /* #define VERBOSE_DEBUG */ +#include <linux/cleanup.h> #include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> +#include <linux/string_choices.h> + +#include <linux/usb/gadget.h> #include "u_ether.h" #include "u_ether_configfs.h" @@ -65,17 +69,6 @@ static inline struct f_ecm *func_to_ecm(struct usb_function *f) return container_of(f, struct f_ecm, port.func); } -/* peak (theoretical) bulk transfer rate in bits-per-second */ -static inline unsigned ecm_bitrate(struct usb_gadget *g) -{ - if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return 13 * 1024 * 8 * 1000 * 8; - else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return 13 * 512 * 8 * 1000 * 8; - else - return 19 * 64 * 1 * 1000 * 8; -} - /*-------------------------------------------------------------------------*/ /* @@ -398,8 +391,7 @@ static void ecm_do_notify(struct f_ecm *ecm) event->wLength = 0; req->length = sizeof *event; - DBG(cdev, "notify connect %s\n", - ecm->is_open ? "true" : "false"); + DBG(cdev, "notify connect %s\n", str_true_false(ecm->is_open)); ecm->notify_state = ECM_NOTIFY_SPEED; break; @@ -411,10 +403,10 @@ static void ecm_do_notify(struct f_ecm *ecm) /* SPEED_CHANGE data is up/down speeds in bits/sec */ data = req->buf + sizeof *event; - data[0] = cpu_to_le32(ecm_bitrate(cdev->gadget)); + data[0] = cpu_to_le32(gether_bitrate(cdev->gadget)); data[1] = data[0]; - DBG(cdev, "notify speed %d\n", ecm_bitrate(cdev->gadget)); + DBG(cdev, "notify speed %d\n", gether_bitrate(cdev->gadget)); ecm->notify_state = ECM_NOTIFY_NONE; break; } @@ -689,6 +681,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) struct usb_ep *ep; struct f_ecm_opts *ecm_opts; + struct usb_request *request __free(free_usb_request) = NULL; if (!can_support_ecm(cdev->gadget)) return -EINVAL; @@ -722,7 +715,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; ecm->ctrl_id = status; ecm_iad_descriptor.bFirstInterface = status; @@ -731,24 +724,22 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; ecm->data_id = status; ecm_data_nop_intf.bInterfaceNumber = status; ecm_data_intf.bInterfaceNumber = status; ecm_union_desc.bSlaveInterface0 = status; - status = -ENODEV; - /* allocate instance-specific endpoints */ ep = usb_ep_autoconfig(cdev->gadget, &fs_ecm_in_desc); if (!ep) - goto fail; + return -ENODEV; ecm->port.in_ep = ep; ep = usb_ep_autoconfig(cdev->gadget, &fs_ecm_out_desc); if (!ep) - goto fail; + return -ENODEV; ecm->port.out_ep = ep; /* NOTE: a status/notification endpoint is *OPTIONAL* but we @@ -757,20 +748,18 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) */ ep = usb_ep_autoconfig(cdev->gadget, &fs_ecm_notify_desc); if (!ep) - goto fail; + return -ENODEV; ecm->notify = ep; - status = -ENOMEM; - /* allocate notification request and buffer */ - ecm->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); - if (!ecm->notify_req) - goto fail; - ecm->notify_req->buf = kmalloc(ECM_STATUS_BYTECOUNT, GFP_KERNEL); - if (!ecm->notify_req->buf) - goto fail; - ecm->notify_req->context = ecm; - ecm->notify_req->complete = ecm_notify_complete; + request = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!request) + return -ENOMEM; + request->buf = kmalloc(ECM_STATUS_BYTECOUNT, GFP_KERNEL); + if (!request->buf) + return -ENOMEM; + request->context = ecm; + request->complete = ecm_notify_complete; /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at @@ -789,7 +778,7 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) status = usb_assign_descriptors(f, ecm_fs_function, ecm_hs_function, ecm_ss_function, ecm_ss_function); if (status) - goto fail; + return status; /* NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code @@ -799,22 +788,12 @@ ecm_bind(struct usb_configuration *c, struct usb_function *f) ecm->port.open = ecm_open; ecm->port.close = ecm_close; - DBG(cdev, "CDC Ethernet: %s speed IN/%s OUT/%s NOTIFY/%s\n", - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + ecm->notify_req = no_free_ptr(request); + + DBG(cdev, "CDC Ethernet: IN/%s OUT/%s NOTIFY/%s\n", ecm->port.in_ep->name, ecm->port.out_ep->name, ecm->notify->name); return 0; - -fail: - if (ecm->notify_req) { - kfree(ecm->notify_req->buf); - usb_ep_free_request(ecm->notify, ecm->notify_req); - } - - ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); - - return status; } static inline struct f_ecm_opts *to_f_ecm_opts(struct config_item *item) @@ -905,6 +884,12 @@ static void ecm_resume(struct usb_function *f) gether_resume(&ecm->port); } +static int ecm_get_status(struct usb_function *f) +{ + return (f->func_wakeup_armed ? USB_INTRF_STAT_FUNC_RW : 0) | + USB_INTRF_STAT_FUNC_RW_CAP; +} + static void ecm_free(struct usb_function *f) { struct f_ecm *ecm; @@ -973,11 +958,13 @@ static struct usb_function *ecm_alloc(struct usb_function_instance *fi) ecm->port.func.disable = ecm_disable; ecm->port.func.free_func = ecm_free; ecm->port.func.suspend = ecm_suspend; + ecm->port.func.get_status = ecm_get_status; ecm->port.func.resume = ecm_resume; return &ecm->port.func; } DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc); +MODULE_DESCRIPTION("USB CDC Ethernet (ECM) link function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/f_eem.c b/drivers/usb/gadget/function/f_eem.c index 5d38f29bda72..edbbadad6138 100644 --- a/drivers/usb/gadget/function/f_eem.c +++ b/drivers/usb/gadget/function/f_eem.c @@ -311,9 +311,7 @@ static int eem_bind(struct usb_configuration *c, struct usb_function *f) if (status) goto fail; - DBG(cdev, "CDC Ethernet (EEM): %s speed IN/%s OUT/%s\n", - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + DBG(cdev, "CDC Ethernet (EEM): IN/%s OUT/%s\n", eem->port.in_ep->name, eem->port.out_ep->name); return 0; @@ -479,8 +477,13 @@ static int eem_unwrap(struct gether *port, req->complete = eem_cmd_complete; req->zero = 1; req->context = ctx; - if (usb_ep_queue(port->in_ep, req, GFP_ATOMIC)) + if (usb_ep_queue(port->in_ep, req, GFP_ATOMIC)) { DBG(cdev, "echo response queue fail\n"); + kfree(ctx); + kfree(req->buf); + usb_ep_free_request(ep, req); + dev_kfree_skb_any(skb2); + } break; case 1: /* echo response */ @@ -676,5 +679,6 @@ static struct usb_function *eem_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(eem, eem_alloc_inst, eem_alloc); +MODULE_DESCRIPTION("USB CDC Ethernet (EEM) link function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index 6e9ef35a43a7..05c6750702b6 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -15,6 +15,9 @@ /* #define VERBOSE_DEBUG */ #include <linux/blkdev.h> +#include <linux/dma-buf.h> +#include <linux/dma-fence.h> +#include <linux/dma-resv.h> #include <linux/pagemap.h> #include <linux/export.h> #include <linux/fs_parser.h> @@ -25,11 +28,12 @@ #include <linux/sched/signal.h> #include <linux/uio.h> #include <linux/vmalloc.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/usb/ccid.h> #include <linux/usb/composite.h> #include <linux/usb/functionfs.h> +#include <linux/usb/func_utils.h> #include <linux/aio.h> #include <linux/kthread.h> @@ -37,11 +41,15 @@ #include <linux/eventfd.h> #include "u_fs.h" -#include "u_f.h" #include "u_os_desc.h" #include "configfs.h" #define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ +#define MAX_ALT_SETTINGS 2 /* Allow up to 2 alt settings to be set. */ + +#define DMABUF_ENQUEUE_TIMEOUT_MS 5000 + +MODULE_IMPORT_NS("DMA_BUF"); /* Reference counter handling */ static void ffs_data_get(struct ffs_data *ffs); @@ -75,6 +83,7 @@ struct ffs_function { short *interfaces_nums; struct usb_function function; + int cur_alt[MAX_CONFIG_INTERFACES]; }; @@ -98,6 +107,7 @@ static int __must_check ffs_func_eps_enable(struct ffs_function *func); static int ffs_func_bind(struct usb_configuration *, struct usb_function *); static int ffs_func_set_alt(struct usb_function *, unsigned, unsigned); +static int ffs_func_get_alt(struct usb_function *f, unsigned int intf); static void ffs_func_disable(struct usb_function *); static int ffs_func_setup(struct usb_function *, const struct usb_ctrlrequest *); @@ -124,6 +134,25 @@ struct ffs_ep { u8 num; }; +struct ffs_dmabuf_priv { + struct list_head entry; + struct kref ref; + struct ffs_data *ffs; + struct dma_buf_attachment *attach; + struct sg_table *sgt; + enum dma_data_direction dir; + spinlock_t lock; + u64 context; + struct usb_request *req; /* P: ffs->eps_lock */ + struct usb_ep *ep; /* P: ffs->eps_lock */ +}; + +struct ffs_dma_fence { + struct dma_fence base; + struct ffs_dmabuf_priv *priv; + struct work_struct work; +}; + struct ffs_epfile { /* Protects ep->ep and ep->req. */ struct mutex mutex; @@ -131,8 +160,6 @@ struct ffs_epfile { struct ffs_data *ffs; struct ffs_ep *ep; /* P: ffs->eps_lock */ - struct dentry *dentry; - /* * Buffer for holding data from partial reads which may happen since * we’re rounding user read requests to a multiple of a max packet size. @@ -197,12 +224,17 @@ struct ffs_epfile { unsigned char isoc; /* P: ffs->eps_lock */ unsigned char _pad; + + /* Protects dmabufs */ + struct mutex dmabufs_mutex; + struct list_head dmabufs; /* P: dmabufs_mutex */ + atomic_t seqno; }; struct ffs_buffer { size_t length; char *data; - char storage[]; + char storage[] __counted_by(length); }; /* ffs_io_data structure ***************************************************/ @@ -237,11 +269,11 @@ struct ffs_desc_helper { }; static int __must_check ffs_epfiles_create(struct ffs_data *ffs); -static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count); +static void ffs_epfiles_destroy(struct super_block *sb, + struct ffs_epfile *epfiles, unsigned count); -static struct dentry * -ffs_sb_create_file(struct super_block *sb, const char *name, void *data, - const struct file_operations *fops); +static int ffs_sb_create_file(struct super_block *sb, const char *name, + void *data, const struct file_operations *fops); /* Devices management *******************************************************/ @@ -422,7 +454,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, } /* FFS_SETUP_PENDING and not stall */ - len = min(len, (size_t)le16_to_cpu(ffs->ev.setup.wLength)); + len = min_t(size_t, len, le16_to_cpu(ffs->ev.setup.wLength)); spin_unlock_irq(&ffs->ev.waitq.lock); @@ -556,7 +588,7 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, /* unlocks spinlock */ return __ffs_ep0_read_events(ffs, buf, - min(n, (size_t)ffs->ev.count)); + min_t(size_t, n, ffs->ev.count)); case FFS_SETUP_PENDING: if (ffs->ev.setup.bRequestType & USB_DIR_IN) { @@ -565,7 +597,7 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf, goto done_mutex; } - len = min(len, (size_t)le16_to_cpu(ffs->ev.setup.wLength)); + len = min_t(size_t, len, le16_to_cpu(ffs->ev.setup.wLength)); spin_unlock_irq(&ffs->ev.waitq.lock); @@ -606,13 +638,22 @@ done_mutex: static int ffs_ep0_open(struct inode *inode, struct file *file) { - struct ffs_data *ffs = inode->i_private; + struct ffs_data *ffs = inode->i_sb->s_fs_info; + int ret; - if (ffs->state == FFS_CLOSING) - return -EBUSY; + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (ret < 0) + return ret; - file->private_data = ffs; ffs_data_opened(ffs); + if (ffs->state == FFS_CLOSING) { + ffs_data_closed(ffs); + mutex_unlock(&ffs->mutex); + return -EBUSY; + } + mutex_unlock(&ffs->mutex); + file->private_data = ffs; return stream_open(inode, file); } @@ -688,7 +729,6 @@ static __poll_t ffs_ep0_poll(struct file *file, poll_table *wait) } static const struct file_operations ffs_ep0_operations = { - .llseek = no_llseek, .open = ffs_ep0_open, .write = ffs_ep0_write, @@ -831,7 +871,9 @@ static void ffs_user_copy_worker(struct work_struct *work) io_data->kiocb->ki_complete(io_data->kiocb, ret); if (io_data->ffs->ffs_eventfd && !kiocb_has_eventfd) - eventfd_signal(io_data->ffs->ffs_eventfd, 1); + eventfd_signal(io_data->ffs->ffs_eventfd); + + usb_ep_free_request(io_data->ep, io_data->req); if (io_data->read) kfree(io_data->to_free); @@ -846,7 +888,6 @@ static void ffs_epfile_async_io_complete(struct usb_ep *_ep, struct ffs_data *ffs = io_data->ffs; io_data->status = req->status ? req->status : req->actual; - usb_ep_free_request(_ep, req); INIT_WORK(&io_data->work, ffs_user_copy_worker); queue_work(ffs->io_completion_wq, &io_data->work); @@ -934,31 +975,44 @@ static ssize_t __ffs_epfile_read_data(struct ffs_epfile *epfile, return ret; } -static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) +static struct ffs_ep *ffs_epfile_wait_ep(struct file *file) { struct ffs_epfile *epfile = file->private_data; - struct usb_request *req; struct ffs_ep *ep; - char *data = NULL; - ssize_t ret, data_len = -EINVAL; - int halt; - - /* Are we still active? */ - if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) - return -ENODEV; + int ret; /* Wait for endpoint to be enabled */ ep = epfile->ep; if (!ep) { if (file->f_flags & O_NONBLOCK) - return -EAGAIN; + return ERR_PTR(-EAGAIN); ret = wait_event_interruptible( epfile->ffs->wait, (ep = epfile->ep)); if (ret) - return -EINTR; + return ERR_PTR(-EINTR); } + return ep; +} + +static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) +{ + struct ffs_epfile *epfile = file->private_data; + struct usb_request *req; + struct ffs_ep *ep; + char *data = NULL; + ssize_t ret, data_len = -EINVAL; + int halt; + + /* Are we still active? */ + if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) + return -ENODEV; + + ep = ffs_epfile_wait_ep(file); + if (IS_ERR(ep)) + return PTR_ERR(ep); + /* Do we halt? */ halt = (!io_data->read == !epfile->in); if (halt && epfile->isoc) @@ -1146,33 +1200,46 @@ error: static int ffs_epfile_open(struct inode *inode, struct file *file) { - struct ffs_epfile *epfile = inode->i_private; + struct ffs_data *ffs = inode->i_sb->s_fs_info; + struct ffs_epfile *epfile; + int ret; - if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) + /* Acquire mutex */ + ret = ffs_mutex_lock(&ffs->mutex, file->f_flags & O_NONBLOCK); + if (ret < 0) + return ret; + + if (!atomic_inc_not_zero(&ffs->opened)) { + mutex_unlock(&ffs->mutex); return -ENODEV; + } + /* + * we want the state to be FFS_ACTIVE; FFS_ACTIVE alone is + * not enough, though - we might have been through FFS_CLOSING + * and back to FFS_ACTIVE, with our file already removed. + */ + epfile = smp_load_acquire(&inode->i_private); + if (unlikely(ffs->state != FFS_ACTIVE || !epfile)) { + mutex_unlock(&ffs->mutex); + ffs_data_closed(ffs); + return -ENODEV; + } + mutex_unlock(&ffs->mutex); file->private_data = epfile; - ffs_data_opened(epfile->ffs); - return stream_open(inode, file); } static int ffs_aio_cancel(struct kiocb *kiocb) { struct ffs_io_data *io_data = kiocb->private; - struct ffs_epfile *epfile = kiocb->ki_filp->private_data; - unsigned long flags; int value; - spin_lock_irqsave(&epfile->ffs->eps_lock, flags); - if (io_data && io_data->ep && io_data->req) value = usb_ep_dequeue(io_data->ep, io_data->req); else value = -EINVAL; - spin_unlock_irqrestore(&epfile->ffs->eps_lock, flags); - return value; } @@ -1258,10 +1325,56 @@ static ssize_t ffs_epfile_read_iter(struct kiocb *kiocb, struct iov_iter *to) return res; } +static void ffs_dmabuf_release(struct kref *ref) +{ + struct ffs_dmabuf_priv *priv = container_of(ref, struct ffs_dmabuf_priv, ref); + struct dma_buf_attachment *attach = priv->attach; + struct dma_buf *dmabuf = attach->dmabuf; + + pr_vdebug("FFS DMABUF release\n"); + dma_buf_unmap_attachment_unlocked(attach, priv->sgt, priv->dir); + + dma_buf_detach(attach->dmabuf, attach); + dma_buf_put(dmabuf); + kfree(priv); +} + +static void ffs_dmabuf_get(struct dma_buf_attachment *attach) +{ + struct ffs_dmabuf_priv *priv = attach->importer_priv; + + kref_get(&priv->ref); +} + +static void ffs_dmabuf_put(struct dma_buf_attachment *attach) +{ + struct ffs_dmabuf_priv *priv = attach->importer_priv; + + kref_put(&priv->ref, ffs_dmabuf_release); +} + static int ffs_epfile_release(struct inode *inode, struct file *file) { - struct ffs_epfile *epfile = inode->i_private; + struct ffs_epfile *epfile = file->private_data; + struct ffs_dmabuf_priv *priv, *tmp; + struct ffs_data *ffs = epfile->ffs; + + mutex_lock(&epfile->dmabufs_mutex); + + /* Close all attached DMABUFs */ + list_for_each_entry_safe(priv, tmp, &epfile->dmabufs, entry) { + /* Cancel any pending transfer */ + spin_lock_irq(&ffs->eps_lock); + if (priv->ep && priv->req) + usb_ep_dequeue(priv->ep, priv->req); + spin_unlock_irq(&ffs->eps_lock); + + list_del(&priv->entry); + ffs_dmabuf_put(priv->attach); + } + + mutex_unlock(&epfile->dmabufs_mutex); __ffs_epfile_read_buffer_free(epfile); ffs_data_closed(epfile->ffs); @@ -1269,6 +1382,357 @@ ffs_epfile_release(struct inode *inode, struct file *file) return 0; } +static void ffs_dmabuf_cleanup(struct work_struct *work) +{ + struct ffs_dma_fence *dma_fence = + container_of(work, struct ffs_dma_fence, work); + struct ffs_dmabuf_priv *priv = dma_fence->priv; + struct dma_buf_attachment *attach = priv->attach; + struct dma_fence *fence = &dma_fence->base; + + ffs_dmabuf_put(attach); + dma_fence_put(fence); +} + +static void ffs_dmabuf_signal_done(struct ffs_dma_fence *dma_fence, int ret) +{ + struct ffs_dmabuf_priv *priv = dma_fence->priv; + struct dma_fence *fence = &dma_fence->base; + bool cookie = dma_fence_begin_signalling(); + + dma_fence_get(fence); + fence->error = ret; + dma_fence_signal(fence); + dma_fence_end_signalling(cookie); + + /* + * The fence will be unref'd in ffs_dmabuf_cleanup. + * It can't be done here, as the unref functions might try to lock + * the resv object, which would deadlock. + */ + INIT_WORK(&dma_fence->work, ffs_dmabuf_cleanup); + queue_work(priv->ffs->io_completion_wq, &dma_fence->work); +} + +static void ffs_epfile_dmabuf_io_complete(struct usb_ep *ep, + struct usb_request *req) +{ + pr_vdebug("FFS: DMABUF transfer complete, status=%d\n", req->status); + ffs_dmabuf_signal_done(req->context, req->status); + usb_ep_free_request(ep, req); +} + +static const char *ffs_dmabuf_get_driver_name(struct dma_fence *fence) +{ + return "functionfs"; +} + +static const char *ffs_dmabuf_get_timeline_name(struct dma_fence *fence) +{ + return ""; +} + +static void ffs_dmabuf_fence_release(struct dma_fence *fence) +{ + struct ffs_dma_fence *dma_fence = + container_of(fence, struct ffs_dma_fence, base); + + kfree(dma_fence); +} + +static const struct dma_fence_ops ffs_dmabuf_fence_ops = { + .get_driver_name = ffs_dmabuf_get_driver_name, + .get_timeline_name = ffs_dmabuf_get_timeline_name, + .release = ffs_dmabuf_fence_release, +}; + +static int ffs_dma_resv_lock(struct dma_buf *dmabuf, bool nonblock) +{ + if (!nonblock) + return dma_resv_lock_interruptible(dmabuf->resv, NULL); + + if (!dma_resv_trylock(dmabuf->resv)) + return -EBUSY; + + return 0; +} + +static struct dma_buf_attachment * +ffs_dmabuf_find_attachment(struct ffs_epfile *epfile, struct dma_buf *dmabuf) +{ + struct device *dev = epfile->ffs->gadget->dev.parent; + struct dma_buf_attachment *attach = NULL; + struct ffs_dmabuf_priv *priv; + + mutex_lock(&epfile->dmabufs_mutex); + + list_for_each_entry(priv, &epfile->dmabufs, entry) { + if (priv->attach->dev == dev + && priv->attach->dmabuf == dmabuf) { + attach = priv->attach; + break; + } + } + + if (attach) + ffs_dmabuf_get(attach); + + mutex_unlock(&epfile->dmabufs_mutex); + + return attach ?: ERR_PTR(-EPERM); +} + +static int ffs_dmabuf_attach(struct file *file, int fd) +{ + bool nonblock = file->f_flags & O_NONBLOCK; + struct ffs_epfile *epfile = file->private_data; + struct usb_gadget *gadget = epfile->ffs->gadget; + struct dma_buf_attachment *attach; + struct ffs_dmabuf_priv *priv; + enum dma_data_direction dir; + struct sg_table *sg_table; + struct dma_buf *dmabuf; + int err; + + if (!gadget || !gadget->sg_supported) + return -EPERM; + + dmabuf = dma_buf_get(fd); + if (IS_ERR(dmabuf)) + return PTR_ERR(dmabuf); + + attach = dma_buf_attach(dmabuf, gadget->dev.parent); + if (IS_ERR(attach)) { + err = PTR_ERR(attach); + goto err_dmabuf_put; + } + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) { + err = -ENOMEM; + goto err_dmabuf_detach; + } + + dir = epfile->in ? DMA_FROM_DEVICE : DMA_TO_DEVICE; + + err = ffs_dma_resv_lock(dmabuf, nonblock); + if (err) + goto err_free_priv; + + sg_table = dma_buf_map_attachment(attach, dir); + dma_resv_unlock(dmabuf->resv); + + if (IS_ERR(sg_table)) { + err = PTR_ERR(sg_table); + goto err_free_priv; + } + + attach->importer_priv = priv; + + priv->sgt = sg_table; + priv->dir = dir; + priv->ffs = epfile->ffs; + priv->attach = attach; + spin_lock_init(&priv->lock); + kref_init(&priv->ref); + priv->context = dma_fence_context_alloc(1); + + mutex_lock(&epfile->dmabufs_mutex); + list_add(&priv->entry, &epfile->dmabufs); + mutex_unlock(&epfile->dmabufs_mutex); + + return 0; + +err_free_priv: + kfree(priv); +err_dmabuf_detach: + dma_buf_detach(dmabuf, attach); +err_dmabuf_put: + dma_buf_put(dmabuf); + + return err; +} + +static int ffs_dmabuf_detach(struct file *file, int fd) +{ + struct ffs_epfile *epfile = file->private_data; + struct ffs_data *ffs = epfile->ffs; + struct device *dev = ffs->gadget->dev.parent; + struct ffs_dmabuf_priv *priv, *tmp; + struct dma_buf *dmabuf; + int ret = -EPERM; + + dmabuf = dma_buf_get(fd); + if (IS_ERR(dmabuf)) + return PTR_ERR(dmabuf); + + mutex_lock(&epfile->dmabufs_mutex); + + list_for_each_entry_safe(priv, tmp, &epfile->dmabufs, entry) { + if (priv->attach->dev == dev + && priv->attach->dmabuf == dmabuf) { + /* Cancel any pending transfer */ + spin_lock_irq(&ffs->eps_lock); + if (priv->ep && priv->req) + usb_ep_dequeue(priv->ep, priv->req); + spin_unlock_irq(&ffs->eps_lock); + + list_del(&priv->entry); + + /* Unref the reference from ffs_dmabuf_attach() */ + ffs_dmabuf_put(priv->attach); + ret = 0; + break; + } + } + + mutex_unlock(&epfile->dmabufs_mutex); + dma_buf_put(dmabuf); + + return ret; +} + +static int ffs_dmabuf_transfer(struct file *file, + const struct usb_ffs_dmabuf_transfer_req *req) +{ + bool nonblock = file->f_flags & O_NONBLOCK; + struct ffs_epfile *epfile = file->private_data; + struct dma_buf_attachment *attach; + struct ffs_dmabuf_priv *priv; + struct ffs_dma_fence *fence; + struct usb_request *usb_req; + enum dma_resv_usage resv_dir; + struct dma_buf *dmabuf; + unsigned long timeout; + struct ffs_ep *ep; + bool cookie; + u32 seqno; + long retl; + int ret; + + if (req->flags & ~USB_FFS_DMABUF_TRANSFER_MASK) + return -EINVAL; + + dmabuf = dma_buf_get(req->fd); + if (IS_ERR(dmabuf)) + return PTR_ERR(dmabuf); + + if (req->length > dmabuf->size || req->length == 0) { + ret = -EINVAL; + goto err_dmabuf_put; + } + + attach = ffs_dmabuf_find_attachment(epfile, dmabuf); + if (IS_ERR(attach)) { + ret = PTR_ERR(attach); + goto err_dmabuf_put; + } + + priv = attach->importer_priv; + + ep = ffs_epfile_wait_ep(file); + if (IS_ERR(ep)) { + ret = PTR_ERR(ep); + goto err_attachment_put; + } + + ret = ffs_dma_resv_lock(dmabuf, nonblock); + if (ret) + goto err_attachment_put; + + /* Make sure we don't have writers */ + timeout = nonblock ? 0 : msecs_to_jiffies(DMABUF_ENQUEUE_TIMEOUT_MS); + retl = dma_resv_wait_timeout(dmabuf->resv, + dma_resv_usage_rw(epfile->in), + true, timeout); + if (retl == 0) + retl = -EBUSY; + if (retl < 0) { + ret = (int)retl; + goto err_resv_unlock; + } + + ret = dma_resv_reserve_fences(dmabuf->resv, 1); + if (ret) + goto err_resv_unlock; + + fence = kmalloc(sizeof(*fence), GFP_KERNEL); + if (!fence) { + ret = -ENOMEM; + goto err_resv_unlock; + } + + fence->priv = priv; + + spin_lock_irq(&epfile->ffs->eps_lock); + + /* In the meantime, endpoint got disabled or changed. */ + if (epfile->ep != ep) { + ret = -ESHUTDOWN; + goto err_fence_put; + } + + usb_req = usb_ep_alloc_request(ep->ep, GFP_ATOMIC); + if (!usb_req) { + ret = -ENOMEM; + goto err_fence_put; + } + + /* + * usb_ep_queue() guarantees that all transfers are processed in the + * order they are enqueued, so we can use a simple incrementing + * sequence number for the dma_fence. + */ + seqno = atomic_add_return(1, &epfile->seqno); + + dma_fence_init(&fence->base, &ffs_dmabuf_fence_ops, + &priv->lock, priv->context, seqno); + + resv_dir = epfile->in ? DMA_RESV_USAGE_WRITE : DMA_RESV_USAGE_READ; + + dma_resv_add_fence(dmabuf->resv, &fence->base, resv_dir); + dma_resv_unlock(dmabuf->resv); + + /* Now that the dma_fence is in place, queue the transfer. */ + + usb_req->length = req->length; + usb_req->buf = NULL; + usb_req->sg = priv->sgt->sgl; + usb_req->num_sgs = sg_nents_for_len(priv->sgt->sgl, req->length); + usb_req->sg_was_mapped = true; + usb_req->context = fence; + usb_req->complete = ffs_epfile_dmabuf_io_complete; + + cookie = dma_fence_begin_signalling(); + ret = usb_ep_queue(ep->ep, usb_req, GFP_ATOMIC); + dma_fence_end_signalling(cookie); + if (!ret) { + priv->req = usb_req; + priv->ep = ep->ep; + } else { + pr_warn("FFS: Failed to queue DMABUF: %d\n", ret); + ffs_dmabuf_signal_done(fence, ret); + usb_ep_free_request(ep->ep, usb_req); + } + + spin_unlock_irq(&epfile->ffs->eps_lock); + dma_buf_put(dmabuf); + + return ret; + +err_fence_put: + spin_unlock_irq(&epfile->ffs->eps_lock); + dma_fence_put(&fence->base); +err_resv_unlock: + dma_resv_unlock(dmabuf->resv); +err_attachment_put: + ffs_dmabuf_put(attach); +err_dmabuf_put: + dma_buf_put(dmabuf); + + return ret; +} + static long ffs_epfile_ioctl(struct file *file, unsigned code, unsigned long value) { @@ -1279,18 +1743,49 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, if (WARN_ON(epfile->ffs->state != FFS_ACTIVE)) return -ENODEV; - /* Wait for endpoint to be enabled */ - ep = epfile->ep; - if (!ep) { - if (file->f_flags & O_NONBLOCK) - return -EAGAIN; + switch (code) { + case FUNCTIONFS_DMABUF_ATTACH: + { + int fd; - ret = wait_event_interruptible( - epfile->ffs->wait, (ep = epfile->ep)); - if (ret) - return -EINTR; + if (copy_from_user(&fd, (void __user *)value, sizeof(fd))) { + ret = -EFAULT; + break; + } + + return ffs_dmabuf_attach(file, fd); + } + case FUNCTIONFS_DMABUF_DETACH: + { + int fd; + + if (copy_from_user(&fd, (void __user *)value, sizeof(fd))) { + ret = -EFAULT; + break; + } + + return ffs_dmabuf_detach(file, fd); + } + case FUNCTIONFS_DMABUF_TRANSFER: + { + struct usb_ffs_dmabuf_transfer_req req; + + if (copy_from_user(&req, (void __user *)value, sizeof(req))) { + ret = -EFAULT; + break; + } + + return ffs_dmabuf_transfer(file, &req); + } + default: + break; } + /* Wait for endpoint to be enabled */ + ep = ffs_epfile_wait_ep(file); + if (IS_ERR(ep)) + return PTR_ERR(ep); + spin_lock_irq(&epfile->ffs->eps_lock); /* In the meantime, endpoint got disabled or changed. */ @@ -1348,7 +1843,6 @@ static long ffs_epfile_ioctl(struct file *file, unsigned code, } static const struct file_operations ffs_epfile_operations = { - .llseek = no_llseek, .open = ffs_epfile_open, .write_iter = ffs_epfile_write_iter, @@ -1383,8 +1877,8 @@ ffs_sb_make_inode(struct super_block *sb, void *data, inode->i_mode = perms->mode; inode->i_uid = perms->uid; inode->i_gid = perms->gid; - inode->i_atime = ts; - inode->i_mtime = ts; + inode_set_atime_to_ts(inode, ts); + inode_set_mtime_to_ts(inode, ts); inode->i_private = data; if (fops) inode->i_fop = fops; @@ -1396,32 +1890,32 @@ ffs_sb_make_inode(struct super_block *sb, void *data, } /* Create "regular" file */ -static struct dentry *ffs_sb_create_file(struct super_block *sb, - const char *name, void *data, - const struct file_operations *fops) +static int ffs_sb_create_file(struct super_block *sb, const char *name, + void *data, const struct file_operations *fops) { struct ffs_data *ffs = sb->s_fs_info; struct dentry *dentry; struct inode *inode; - dentry = d_alloc_name(sb->s_root, name); - if (!dentry) - return NULL; - inode = ffs_sb_make_inode(sb, data, fops, NULL, &ffs->file_perms); - if (!inode) { - dput(dentry); - return NULL; + if (!inode) + return -ENOMEM; + dentry = simple_start_creating(sb->s_root, name); + if (IS_ERR(dentry)) { + iput(inode); + return PTR_ERR(dentry); } - d_add(dentry, inode); - return dentry; + d_make_persistent(dentry, inode); + + simple_done_creating(dentry); + return 0; } /* Super block */ static const struct super_operations ffs_sb_operations = { .statfs = simple_statfs, - .drop_inode = generic_delete_inode, + .drop_inode = inode_just_drop, }; struct ffs_sb_fill_data { @@ -1458,10 +1952,7 @@ static int ffs_sb_fill(struct super_block *sb, struct fs_context *fc) return -ENOMEM; /* EP0 file */ - if (!ffs_sb_create_file(sb, "ep0", ffs, &ffs_ep0_operations)) - return -ENOMEM; - - return 0; + return ffs_sb_create_file(sb, "ep0", ffs, &ffs_ep0_operations); } enum { @@ -1601,12 +2092,21 @@ static int ffs_fs_init_fs_context(struct fs_context *fc) return 0; } +static void ffs_data_reset(struct ffs_data *ffs); + static void ffs_fs_kill_sb(struct super_block *sb) { - kill_litter_super(sb); - if (sb->s_fs_info) - ffs_data_closed(sb->s_fs_info); + kill_anon_super(sb); + if (sb->s_fs_info) { + struct ffs_data *ffs = sb->s_fs_info; + ffs->state = FFS_CLOSING; + ffs_data_reset(ffs); + // no configfs accesses from that point on, + // so no further schedule_work() is possible + cancel_work_sync(&ffs->reset_work); + ffs_data_put(ffs); + } } static struct file_system_type ffs_fs_type = { @@ -1644,7 +2144,6 @@ static void functionfs_cleanup(void) /* ffs_data and ffs_function construction and destruction code **************/ static void ffs_data_clear(struct ffs_data *ffs); -static void ffs_data_reset(struct ffs_data *ffs); static void ffs_data_get(struct ffs_data *ffs) { @@ -1653,7 +2152,6 @@ static void ffs_data_get(struct ffs_data *ffs) static void ffs_data_opened(struct ffs_data *ffs) { - refcount_inc(&ffs->ref); if (atomic_add_return(1, &ffs->opened) == 1 && ffs->state == FFS_DEACTIVATED) { ffs->state = FFS_CLOSING; @@ -1678,11 +2176,11 @@ static void ffs_data_put(struct ffs_data *ffs) static void ffs_data_closed(struct ffs_data *ffs) { - struct ffs_epfile *epfiles; - unsigned long flags; - if (atomic_dec_and_test(&ffs->opened)) { if (ffs->no_disconnect) { + struct ffs_epfile *epfiles; + unsigned long flags; + ffs->state = FFS_DEACTIVATED; spin_lock_irqsave(&ffs->eps_lock, flags); epfiles = ffs->epfiles; @@ -1691,7 +2189,7 @@ static void ffs_data_closed(struct ffs_data *ffs) flags); if (epfiles) - ffs_epfiles_destroy(epfiles, + ffs_epfiles_destroy(ffs->sb, epfiles, ffs->eps_count); if (ffs->setup_state == FFS_SETUP_PENDING) @@ -1701,12 +2199,6 @@ static void ffs_data_closed(struct ffs_data *ffs) ffs_data_reset(ffs); } } - if (atomic_read(&ffs->opened) < 0) { - ffs->state = FFS_CLOSING; - ffs_data_reset(ffs); - } - - ffs_data_put(ffs); } static struct ffs_data *ffs_data_new(const char *dev_name) @@ -1756,7 +2248,7 @@ static void ffs_data_clear(struct ffs_data *ffs) * copy of epfile will save us from use-after-free. */ if (epfiles) { - ffs_epfiles_destroy(epfiles, ffs->eps_count); + ffs_epfiles_destroy(ffs->sb, epfiles, ffs->eps_count); ffs->epfiles = NULL; } @@ -1805,7 +2297,7 @@ static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev) struct usb_gadget_strings **lang; int first_id; - if (WARN_ON(ffs->state != FFS_ACTIVE + if ((ffs->state != FFS_ACTIVE || test_and_set_bit(FFS_FL_BOUND, &ffs->flags))) return -EBADFD; @@ -1853,6 +2345,7 @@ static int ffs_epfiles_create(struct ffs_data *ffs) { struct ffs_epfile *epfile, *epfiles; unsigned i, count; + int err; count = ffs->eps_count; epfiles = kcalloc(count, sizeof(*epfiles), GFP_KERNEL); @@ -1863,16 +2356,17 @@ static int ffs_epfiles_create(struct ffs_data *ffs) for (i = 1; i <= count; ++i, ++epfile) { epfile->ffs = ffs; mutex_init(&epfile->mutex); + mutex_init(&epfile->dmabufs_mutex); + INIT_LIST_HEAD(&epfile->dmabufs); if (ffs->user_flags & FUNCTIONFS_VIRTUAL_ADDR) sprintf(epfile->name, "ep%02x", ffs->eps_addrmap[i]); else sprintf(epfile->name, "ep%u", i); - epfile->dentry = ffs_sb_create_file(ffs->sb, epfile->name, - epfile, - &ffs_epfile_operations); - if (!epfile->dentry) { - ffs_epfiles_destroy(epfiles, i - 1); - return -ENOMEM; + err = ffs_sb_create_file(ffs->sb, epfile->name, + epfile, &ffs_epfile_operations); + if (err) { + ffs_epfiles_destroy(ffs->sb, epfiles, i - 1); + return err; } } @@ -1880,17 +2374,20 @@ static int ffs_epfiles_create(struct ffs_data *ffs) return 0; } -static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count) +static void clear_one(struct dentry *dentry) +{ + smp_store_release(&dentry->d_inode->i_private, NULL); +} + +static void ffs_epfiles_destroy(struct super_block *sb, + struct ffs_epfile *epfiles, unsigned count) { struct ffs_epfile *epfile = epfiles; + struct dentry *root = sb->s_root; for (; count; --count, ++epfile) { BUG_ON(mutex_is_locked(&epfile->mutex)); - if (epfile->dentry) { - d_delete(epfile->dentry); - dput(epfile->dentry); - epfile->dentry = NULL; - } + simple_remove_by_name(root, epfile->name, clear_one); } kfree(epfiles); @@ -1936,7 +2433,12 @@ static int ffs_func_eps_enable(struct ffs_function *func) ep = func->eps; epfile = ffs->epfiles; count = ffs->eps_count; - while(count--) { + if (!epfile) { + ret = -ENOMEM; + goto done; + } + + while (count--) { ep->ep->driver_data = ep; ret = config_ep_by_speed(func->gadget, &func->function, ep->ep); @@ -1960,6 +2462,7 @@ static int ffs_func_eps_enable(struct ffs_function *func) } wake_up_interruptible(&ffs->wait); +done: spin_unlock_irqrestore(&func->ffs->eps_lock, flags); return ret; @@ -1994,7 +2497,7 @@ typedef int (*ffs_os_desc_callback)(enum ffs_os_desc_type entity, static int __must_check ffs_do_single_desc(char *data, unsigned len, ffs_entity_callback entity, - void *priv, int *current_class) + void *priv, int *current_class, int *current_subclass) { struct usb_descriptor_header *_ds = (void *)data; u8 length; @@ -2051,6 +2554,7 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, if (ds->iInterface) __entity(STRING, ds->iInterface); *current_class = ds->bInterfaceClass; + *current_subclass = ds->bInterfaceSubClass; } break; @@ -2075,6 +2579,12 @@ static int __must_check ffs_do_single_desc(char *data, unsigned len, if (length != sizeof(struct ccid_descriptor)) goto inv_length; break; + } else if (*current_class == USB_CLASS_APP_SPEC && + *current_subclass == USB_SUBCLASS_DFU) { + pr_vdebug("dfu functional descriptor\n"); + if (length != sizeof(struct usb_dfu_functional_descriptor)) + goto inv_length; + break; } else { pr_vdebug("unknown descriptor: %d for class %d\n", _ds->bDescriptorType, *current_class); @@ -2137,6 +2647,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, const unsigned _len = len; unsigned long num = 0; int current_class = -1; + int current_subclass = -1; for (;;) { int ret; @@ -2156,7 +2667,7 @@ static int __must_check ffs_do_descs(unsigned count, char *data, unsigned len, return _len - len; ret = ffs_do_single_desc(data, len, entity, priv, - ¤t_class); + ¤t_class, ¤t_subclass); if (ret < 0) { pr_debug("%s returns %d\n", __func__, ret); return ret; @@ -2738,7 +3249,7 @@ static void __ffs_event_add(struct ffs_data *ffs, ffs->ev.types[ffs->ev.count++] = type; wake_up_locked(&ffs->ev.waitq); if (ffs->ffs_eventfd) - eventfd_signal(ffs->ffs_eventfd, 1); + eventfd_signal(ffs->ffs_eventfd); } static void ffs_event_add(struct ffs_data *ffs, @@ -2805,7 +3316,7 @@ static int __ffs_func_bind_do_descs(enum ffs_entity_type type, u8 *valuep, if (ffs_ep->descs[ep_desc_id]) { pr_err("two %sspeed descriptors for EP %d\n", speed_names[ep_desc_id], - ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); + usb_endpoint_num(ds)); return -EINVAL; } ffs_ep->descs[ep_desc_id] = ds; @@ -2931,9 +3442,8 @@ static int __ffs_func_bind_do_os_desc(enum ffs_os_desc_type type, t = &func->function.os_desc_table[desc->bFirstInterfaceNumber]; t->if_id = func->interfaces_nums[desc->bFirstInterfaceNumber]; - memcpy(t->os_desc->ext_compat_id, &desc->CompatibleID, - ARRAY_SIZE(desc->CompatibleID) + - ARRAY_SIZE(desc->SubCompatibleID)); + memcpy(t->os_desc->ext_compat_id, &desc->IDs, + sizeof_field(struct usb_ext_compat_desc, IDs)); length = sizeof(*desc); } break; @@ -3232,6 +3742,15 @@ static void ffs_reset_work(struct work_struct *work) ffs_data_reset(ffs); } +static int ffs_func_get_alt(struct usb_function *f, + unsigned int interface) +{ + struct ffs_function *func = ffs_func_from_usb(f); + int intf = ffs_func_revmap_intf(func, interface); + + return (intf < 0) ? intf : func->cur_alt[interface]; +} + static int ffs_func_set_alt(struct usb_function *f, unsigned interface, unsigned alt) { @@ -3239,11 +3758,12 @@ static int ffs_func_set_alt(struct usb_function *f, struct ffs_data *ffs = func->ffs; int ret = 0, intf; - if (alt != (unsigned)-1) { - intf = ffs_func_revmap_intf(func, interface); - if (intf < 0) - return intf; - } + if (alt > MAX_ALT_SETTINGS) + return -EINVAL; + + intf = ffs_func_revmap_intf(func, interface); + if (intf < 0) + return intf; if (ffs->func) ffs_func_eps_disable(ffs->func); @@ -3258,22 +3778,34 @@ static int ffs_func_set_alt(struct usb_function *f, if (ffs->state != FFS_ACTIVE) return -ENODEV; - if (alt == (unsigned)-1) { - ffs->func = NULL; - ffs_event_add(ffs, FUNCTIONFS_DISABLE); - return 0; - } - ffs->func = func; ret = ffs_func_eps_enable(func); - if (ret >= 0) + if (ret >= 0) { ffs_event_add(ffs, FUNCTIONFS_ENABLE); + func->cur_alt[interface] = alt; + } return ret; } static void ffs_func_disable(struct usb_function *f) { - ffs_func_set_alt(f, 0, (unsigned)-1); + struct ffs_function *func = ffs_func_from_usb(f); + struct ffs_data *ffs = func->ffs; + + if (ffs->func) + ffs_func_eps_disable(ffs->func); + + if (ffs->state == FFS_DEACTIVATED) { + ffs->state = FFS_CLOSING; + INIT_WORK(&ffs->reset_work, ffs_reset_work); + schedule_work(&ffs->reset_work); + return; + } + + if (ffs->state == FFS_ACTIVE) { + ffs->func = NULL; + ffs_event_add(ffs, FUNCTIONFS_DISABLE); + } } static int ffs_func_setup(struct usb_function *f, @@ -3331,7 +3863,7 @@ static int ffs_func_setup(struct usb_function *f, __ffs_event_add(ffs, FUNCTIONFS_SETUP); spin_unlock_irqrestore(&ffs->ev.waitq.lock, flags); - return creq->wLength == 0 ? USB_GADGET_DELAYED_STATUS : 0; + return ffs->ev.setup.wLength == 0 ? USB_GADGET_DELAYED_STATUS : 0; } static bool ffs_func_req_match(struct usb_function *f, @@ -3446,6 +3978,25 @@ static inline struct f_fs_opts *to_ffs_opts(struct config_item *item) func_inst.group); } +static ssize_t f_fs_opts_ready_show(struct config_item *item, char *page) +{ + struct f_fs_opts *opts = to_ffs_opts(item); + int ready; + + ffs_dev_lock(); + ready = opts->dev->desc_ready; + ffs_dev_unlock(); + + return sprintf(page, "%d\n", ready); +} + +CONFIGFS_ATTR_RO(f_fs_opts_, ready); + +static struct configfs_attribute *ffs_attrs[] = { + &f_fs_opts_attr_ready, + NULL, +}; + static void ffs_attr_release(struct config_item *item) { struct f_fs_opts *opts = to_ffs_opts(item); @@ -3459,6 +4010,7 @@ static struct configfs_item_operations ffs_item_ops = { static const struct config_item_type ffs_func_type = { .ct_item_ops = &ffs_item_ops, + .ct_attrs = ffs_attrs, .ct_owner = THIS_MODULE, }; @@ -3574,6 +4126,7 @@ static struct usb_function *ffs_alloc(struct usb_function_instance *fi) func->function.bind = ffs_func_bind; func->function.unbind = ffs_func_unbind; func->function.set_alt = ffs_func_set_alt; + func->function.get_alt = ffs_func_get_alt; func->function.disable = ffs_func_disable; func->function.setup = ffs_func_setup; func->function.req_match = ffs_func_req_match; @@ -3798,5 +4351,6 @@ static char *ffs_prepare_buffer(const char __user *buf, size_t len) } DECLARE_USB_FUNCTION_INIT(ffs, ffs_alloc_inst, ffs_alloc); +MODULE_DESCRIPTION("user mode file system API for USB composite function controllers"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Michal Nazarewicz"); diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c index ea85e2c701a1..3ddfd4f66f0b 100644 --- a/drivers/usb/gadget/function/f_hid.c +++ b/drivers/usb/gadget/function/f_hid.c @@ -15,13 +15,21 @@ #include <linux/uaccess.h> #include <linux/wait.h> #include <linux/sched.h> +#include <linux/workqueue.h> +#include <linux/usb/func_utils.h> #include <linux/usb/g_hid.h> +#include <uapi/linux/usb/g_hid.h> -#include "u_f.h" #include "u_hid.h" #define HIDG_MINORS 4 +/* + * Most operating systems seem to allow for 5000ms timeout, we will allow + * userspace half that time to respond before we return an empty report. + */ +#define GET_REPORT_TIMEOUT_MS 2500 + static int major, minors; static const struct class hidg_class = { @@ -31,6 +39,11 @@ static const struct class hidg_class = { static DEFINE_IDA(hidg_ida); static DEFINE_MUTEX(hidg_ida_lock); /* protects access to hidg_ida */ +struct report_entry { + struct usb_hidg_report report_data; + struct list_head node; +}; + /*-------------------------------------------------------------------------*/ /* HID gadget struct */ @@ -49,6 +62,9 @@ struct f_hidg { unsigned short report_desc_length; char *report_desc; unsigned short report_length; + unsigned char interval; + bool interval_user_set; + /* * use_out_ep - if true, the OUT Endpoint (interrupt out method) * will be used to receive reports from the host @@ -62,6 +78,7 @@ struct f_hidg { /* recv report */ spinlock_t read_spinlock; wait_queue_head_t read_queue; + bool disabled; /* recv report - interrupt out only (use_out_ep == 1) */ struct list_head completed_out_req; unsigned int qlen; @@ -75,6 +92,19 @@ struct f_hidg { wait_queue_head_t write_queue; struct usb_request *req; + /* get report */ + struct usb_request *get_req; + struct usb_hidg_report get_report; + bool get_report_returned; + int get_report_req_report_id; + int get_report_req_report_length; + spinlock_t get_report_spinlock; + wait_queue_head_t get_queue; /* Waiting for userspace response */ + wait_queue_head_t get_id_queue; /* Get ID came in */ + struct work_struct work; + struct workqueue_struct *workqueue; + struct list_head report_list; + struct device dev; struct cdev cdev; struct usb_function func; @@ -92,6 +122,7 @@ static void hidg_release(struct device *dev) { struct f_hidg *hidg = container_of(dev, struct f_hidg, dev); + kfree(hidg->report_desc); kfree(hidg->set_report_buf); kfree(hidg); } @@ -117,8 +148,8 @@ static struct hid_descriptor hidg_desc = { .bcdHID = cpu_to_le16(0x0101), .bCountryCode = 0x00, .bNumDescriptors = 0x1, - /*.desc[0].bDescriptorType = DYNAMIC */ - /*.desc[0].wDescriptorLenght = DYNAMIC */ + /*.rpt_desc.bDescriptorType = DYNAMIC */ + /*.rpt_desc.wDescriptorLength = DYNAMIC */ }; /* Super-Speed Support */ @@ -129,10 +160,7 @@ static struct usb_endpoint_descriptor hidg_ss_in_ep_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 4, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /*.bInterval = DYNAMIC */ }; static struct usb_ss_ep_comp_descriptor hidg_ss_in_comp_desc = { @@ -150,10 +178,7 @@ static struct usb_endpoint_descriptor hidg_ss_out_ep_desc = { .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 4, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /*.bInterval = DYNAMIC */ }; static struct usb_ss_ep_comp_descriptor hidg_ss_out_comp_desc = { @@ -191,10 +216,7 @@ static struct usb_endpoint_descriptor hidg_hs_in_ep_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 4, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /* .bInterval = DYNAMIC */ }; static struct usb_endpoint_descriptor hidg_hs_out_ep_desc = { @@ -203,10 +225,7 @@ static struct usb_endpoint_descriptor hidg_hs_out_ep_desc = { .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 4, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /*.bInterval = DYNAMIC */ }; static struct usb_descriptor_header *hidg_hs_descriptors_intout[] = { @@ -232,10 +251,7 @@ static struct usb_endpoint_descriptor hidg_fs_in_ep_desc = { .bEndpointAddress = USB_DIR_IN, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 10, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /*.bInterval = DYNAMIC */ }; static struct usb_endpoint_descriptor hidg_fs_out_ep_desc = { @@ -244,10 +260,7 @@ static struct usb_endpoint_descriptor hidg_fs_out_ep_desc = { .bEndpointAddress = USB_DIR_OUT, .bmAttributes = USB_ENDPOINT_XFER_INT, /*.wMaxPacketSize = DYNAMIC */ - .bInterval = 10, /* FIXME: Add this field in the - * HID gadget configuration? - * (struct hidg_func_descriptor) - */ + /*.bInterval = DYNAMIC */ }; static struct usb_descriptor_header *hidg_fs_descriptors_intout[] = { @@ -302,7 +315,7 @@ static ssize_t f_hidg_intout_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->read_spinlock, flags); -#define READ_COND_INTOUT (!list_empty(&hidg->completed_out_req)) +#define READ_COND_INTOUT (!list_empty(&hidg->completed_out_req) || hidg->disabled) /* wait for at least one buffer to complete */ while (!READ_COND_INTOUT) { @@ -316,6 +329,11 @@ static ssize_t f_hidg_intout_read(struct file *file, char __user *buffer, spin_lock_irqsave(&hidg->read_spinlock, flags); } + if (hidg->disabled) { + spin_unlock_irqrestore(&hidg->read_spinlock, flags); + return -ESHUTDOWN; + } + /* pick the first one */ list = list_first_entry(&hidg->completed_out_req, struct f_hidg_req_list, list); @@ -360,7 +378,7 @@ static ssize_t f_hidg_intout_read(struct file *file, char __user *buffer, return count; } -#define READ_COND_SSREPORT (hidg->set_report_buf != NULL) +#define READ_COND_SSREPORT (hidg->set_report_buf != NULL || hidg->disabled) static ssize_t f_hidg_ssreport_read(struct file *file, char __user *buffer, size_t count, loff_t *ptr) @@ -493,7 +511,7 @@ try_again: } req->status = 0; - req->zero = 0; + req->zero = 1; req->length = count; req->complete = f_hidg_req_complete; req->context = hidg; @@ -523,6 +541,174 @@ release_write_pending: return status; } +static struct report_entry *f_hidg_search_for_report(struct f_hidg *hidg, u8 report_id) +{ + struct list_head *ptr; + struct report_entry *entry; + + list_for_each(ptr, &hidg->report_list) { + entry = list_entry(ptr, struct report_entry, node); + if (entry->report_data.report_id == report_id) + return entry; + } + + return NULL; +} + +static void get_report_workqueue_handler(struct work_struct *work) +{ + struct f_hidg *hidg = container_of(work, struct f_hidg, work); + struct usb_composite_dev *cdev = hidg->func.config->cdev; + struct usb_request *req; + struct report_entry *ptr; + unsigned long flags; + + int status = 0; + + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + req = hidg->get_req; + if (!req) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return; + } + + req->zero = 0; + req->length = min_t(unsigned int, min_t(unsigned int, hidg->get_report_req_report_length, + hidg->report_length), + MAX_REPORT_LENGTH); + + /* Check if there is a response available for immediate response */ + ptr = f_hidg_search_for_report(hidg, hidg->get_report_req_report_id); + if (ptr && !ptr->report_data.userspace_req) { + /* Report exists in list and it is to be used for immediate response */ + req->buf = ptr->report_data.data; + status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + hidg->get_report_returned = true; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + } else { + /* + * Report does not exist in list or should not be immediately sent + * i.e. give userspace time to respond + */ + hidg->get_report_returned = false; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + wake_up(&hidg->get_id_queue); +#define GET_REPORT_COND (!hidg->get_report_returned) + /* Wait until userspace has responded or timeout */ + status = wait_event_interruptible_timeout(hidg->get_queue, !GET_REPORT_COND, + msecs_to_jiffies(GET_REPORT_TIMEOUT_MS)); + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + req = hidg->get_req; + if (!req) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return; + } + if (status == 0 && !hidg->get_report_returned) { + /* GET_REPORT request was not serviced by userspace within timeout period */ + VDBG(cdev, "get_report : userspace timeout.\n"); + hidg->get_report_returned = true; + } + + /* Search again for report ID in list and respond to GET_REPORT request */ + ptr = f_hidg_search_for_report(hidg, hidg->get_report_req_report_id); + if (ptr) { + /* + * Either get an updated response just serviced by userspace + * or send the latest response in the list + */ + req->buf = ptr->report_data.data; + } else { + /* If there are no prevoiusly sent reports send empty report */ + req->buf = hidg->get_report.data; + memset(req->buf, 0x0, req->length); + } + + status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + } + + if (status < 0) + VDBG(cdev, "usb_ep_queue error on ep0 responding to GET_REPORT\n"); +} + +static int f_hidg_get_report_id(struct file *file, __u8 __user *buffer) +{ + struct f_hidg *hidg = file->private_data; + int ret = 0; + + ret = put_user(hidg->get_report_req_report_id, buffer); + + return ret; +} + +static int f_hidg_get_report(struct file *file, struct usb_hidg_report __user *buffer) +{ + struct f_hidg *hidg = file->private_data; + struct usb_composite_dev *cdev = hidg->func.config->cdev; + unsigned long flags; + struct report_entry *entry; + struct report_entry *ptr; + __u8 report_id; + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + + if (copy_from_user(&entry->report_data, buffer, + sizeof(struct usb_hidg_report))) { + ERROR(cdev, "copy_from_user error\n"); + kfree(entry); + return -EINVAL; + } + + report_id = entry->report_data.report_id; + + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + ptr = f_hidg_search_for_report(hidg, report_id); + + if (ptr) { + /* Report already exists in list - update it */ + if (copy_from_user(&ptr->report_data, buffer, + sizeof(struct usb_hidg_report))) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + ERROR(cdev, "copy_from_user error\n"); + kfree(entry); + return -EINVAL; + } + kfree(entry); + } else { + /* Report does not exist in list - add it */ + list_add_tail(&entry->node, &hidg->report_list); + } + + /* If there is no response pending then do nothing further */ + if (hidg->get_report_returned) { + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return 0; + } + + /* If this userspace response serves the current pending report */ + if (hidg->get_report_req_report_id == report_id) { + hidg->get_report_returned = true; + wake_up(&hidg->get_queue); + } + + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + return 0; +} + +static long f_hidg_ioctl(struct file *file, unsigned int code, unsigned long arg) +{ + switch (code) { + case GADGET_HID_READ_GET_REPORT_ID: + return f_hidg_get_report_id(file, (__u8 __user *)arg); + case GADGET_HID_WRITE_GET_REPORT: + return f_hidg_get_report(file, (struct usb_hidg_report __user *)arg); + default: + return -ENOTTY; + } +} + static __poll_t f_hidg_poll(struct file *file, poll_table *wait) { struct f_hidg *hidg = file->private_data; @@ -530,6 +716,8 @@ static __poll_t f_hidg_poll(struct file *file, poll_table *wait) poll_wait(file, &hidg->read_queue, wait); poll_wait(file, &hidg->write_queue, wait); + poll_wait(file, &hidg->get_queue, wait); + poll_wait(file, &hidg->get_id_queue, wait); if (WRITE_COND) ret |= EPOLLOUT | EPOLLWRNORM; @@ -542,12 +730,16 @@ static __poll_t f_hidg_poll(struct file *file, poll_table *wait) ret |= EPOLLIN | EPOLLRDNORM; } + if (GET_REPORT_COND) + ret |= EPOLLPRI; + return ret; } #undef WRITE_COND #undef READ_COND_SSREPORT #undef READ_COND_INTOUT +#undef GET_REPORT_COND static int f_hidg_release(struct inode *inode, struct file *fd) { @@ -640,6 +832,10 @@ static void hidg_ssreport_complete(struct usb_ep *ep, struct usb_request *req) wake_up(&hidg->read_queue); } +static void hidg_get_report_complete(struct usb_ep *ep, struct usb_request *req) +{ +} + static int hidg_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) { @@ -648,6 +844,7 @@ static int hidg_setup(struct usb_function *f, struct usb_request *req = cdev->req; int status = 0; __u16 value, length; + unsigned long flags; value = __le16_to_cpu(ctrl->wValue); length = __le16_to_cpu(ctrl->wLength); @@ -659,14 +856,20 @@ static int hidg_setup(struct usb_function *f, switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_GET_REPORT): - VDBG(cdev, "get_report\n"); + VDBG(cdev, "get_report | wLength=%d\n", ctrl->wLength); - /* send an empty report */ - length = min_t(unsigned, length, hidg->report_length); - memset(req->buf, 0x0, length); + /* + * Update GET_REPORT ID so that an ioctl can be used to determine what + * GET_REPORT the request was actually for. + */ + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + hidg->get_report_req_report_id = value & 0xff; + hidg->get_report_req_report_length = length; + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); - goto respond; - break; + queue_work(hidg->workqueue, &hidg->work); + + return status; case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8 | HID_REQ_GET_PROTOCOL): @@ -727,8 +930,8 @@ static int hidg_setup(struct usb_function *f, struct hid_descriptor hidg_desc_copy = hidg_desc; VDBG(cdev, "USB_REQ_GET_DESCRIPTOR: HID\n"); - hidg_desc_copy.desc[0].bDescriptorType = HID_DT_REPORT; - hidg_desc_copy.desc[0].wDescriptorLength = + hidg_desc_copy.rpt_desc.bDescriptorType = HID_DT_REPORT; + hidg_desc_copy.rpt_desc.wDescriptorLength = cpu_to_le16(hidg->report_desc_length); length = min_t(unsigned short, length, @@ -764,7 +967,7 @@ stall: return -EOPNOTSUPP; respond: - req->zero = 0; + req->zero = 1; req->length = length; status = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); if (status < 0) @@ -792,6 +995,19 @@ static void hidg_disable(struct usb_function *f) spin_unlock_irqrestore(&hidg->read_spinlock, flags); } + spin_lock_irqsave(&hidg->get_report_spinlock, flags); + if (!hidg->get_report_returned) { + usb_ep_free_request(f->config->cdev->gadget->ep0, hidg->get_req); + hidg->get_req = NULL; + hidg->get_report_returned = true; + } + spin_unlock_irqrestore(&hidg->get_report_spinlock, flags); + + spin_lock_irqsave(&hidg->read_spinlock, flags); + hidg->disabled = true; + spin_unlock_irqrestore(&hidg->read_spinlock, flags); + wake_up(&hidg->read_queue); + spin_lock_irqsave(&hidg->write_spinlock, flags); if (!hidg->write_pending) { free_ep_req(hidg->in_ep, hidg->req); @@ -877,6 +1093,10 @@ static int hidg_set_alt(struct usb_function *f, unsigned intf, unsigned alt) } } + spin_lock_irqsave(&hidg->read_spinlock, flags); + hidg->disabled = false; + spin_unlock_irqrestore(&hidg->read_spinlock, flags); + if (hidg->in_ep != NULL) { spin_lock_irqsave(&hidg->write_spinlock, flags); hidg->req = req_in; @@ -901,6 +1121,14 @@ fail: return status; } +#ifdef CONFIG_COMPAT +static long f_hidg_compat_ioctl(struct file *file, unsigned int code, + unsigned long value) +{ + return f_hidg_ioctl(file, code, value); +} +#endif + static const struct file_operations f_hidg_fops = { .owner = THIS_MODULE, .open = f_hidg_open, @@ -908,6 +1136,10 @@ static const struct file_operations f_hidg_fops = { .write = f_hidg_write, .read = f_hidg_read, .poll = f_hidg_poll, + .unlocked_ioctl = f_hidg_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = f_hidg_compat_ioctl, +#endif .llseek = noop_llseek, }; @@ -918,6 +1150,15 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) struct usb_string *us; int status; + hidg->get_req = usb_ep_alloc_request(c->cdev->gadget->ep0, GFP_ATOMIC); + if (!hidg->get_req) + return -ENOMEM; + + hidg->get_req->zero = 0; + hidg->get_req->complete = hidg_get_report_complete; + hidg->get_req->context = hidg; + hidg->get_report_returned = true; + /* maybe allocate device-global string IDs, and patch descriptors */ us = usb_gstrings_attach(c->cdev, ct_func_strings, ARRAY_SIZE(ct_func_string_defs)); @@ -961,6 +1202,16 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg_hs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_fs_in_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); hidg_ss_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); + + /* IN endpoints: FS default=10ms, HS default=4µ-frame; user override if set */ + if (!hidg->interval_user_set) { + hidg_fs_in_ep_desc.bInterval = 10; + hidg_hs_in_ep_desc.bInterval = 4; + } else { + hidg_fs_in_ep_desc.bInterval = hidg->interval; + hidg_hs_in_ep_desc.bInterval = hidg->interval; + } + hidg_ss_out_comp_desc.wBytesPerInterval = cpu_to_le16(hidg->report_length); hidg_hs_out_ep_desc.wMaxPacketSize = cpu_to_le16(hidg->report_length); @@ -969,8 +1220,8 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) * We can use hidg_desc struct here but we should not relay * that its content won't change after returning from this function. */ - hidg_desc.desc[0].bDescriptorType = HID_DT_REPORT; - hidg_desc.desc[0].wDescriptorLength = + hidg_desc.rpt_desc.bDescriptorType = HID_DT_REPORT; + hidg_desc.rpt_desc.wDescriptorLength = cpu_to_le16(hidg->report_desc_length); hidg_hs_in_ep_desc.bEndpointAddress = @@ -983,19 +1234,27 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg_ss_out_ep_desc.bEndpointAddress = hidg_fs_out_ep_desc.bEndpointAddress; - if (hidg->use_out_ep) + if (hidg->use_out_ep) { + /* OUT endpoints: same defaults (FS=10, HS=4) unless user set */ + if (!hidg->interval_user_set) { + hidg_fs_out_ep_desc.bInterval = 10; + hidg_hs_out_ep_desc.bInterval = 4; + } else { + hidg_fs_out_ep_desc.bInterval = hidg->interval; + hidg_hs_out_ep_desc.bInterval = hidg->interval; + } status = usb_assign_descriptors(f, - hidg_fs_descriptors_intout, - hidg_hs_descriptors_intout, - hidg_ss_descriptors_intout, - hidg_ss_descriptors_intout); - else + hidg_fs_descriptors_intout, + hidg_hs_descriptors_intout, + hidg_ss_descriptors_intout, + hidg_ss_descriptors_intout); + } else { status = usb_assign_descriptors(f, hidg_fs_descriptors_ssreport, hidg_hs_descriptors_ssreport, hidg_ss_descriptors_ssreport, hidg_ss_descriptors_ssreport); - + } if (status) goto fail; @@ -1003,17 +1262,33 @@ static int hidg_bind(struct usb_configuration *c, struct usb_function *f) hidg->write_pending = 1; hidg->req = NULL; spin_lock_init(&hidg->read_spinlock); + spin_lock_init(&hidg->get_report_spinlock); init_waitqueue_head(&hidg->write_queue); init_waitqueue_head(&hidg->read_queue); + init_waitqueue_head(&hidg->get_queue); + init_waitqueue_head(&hidg->get_id_queue); INIT_LIST_HEAD(&hidg->completed_out_req); + INIT_LIST_HEAD(&hidg->report_list); + + INIT_WORK(&hidg->work, get_report_workqueue_handler); + hidg->workqueue = alloc_workqueue("report_work", + WQ_FREEZABLE | WQ_MEM_RECLAIM | WQ_PERCPU, + 1); + + if (!hidg->workqueue) { + status = -ENOMEM; + goto fail_free_descs; + } /* create char device */ cdev_init(&hidg->cdev, &f_hidg_fops); status = cdev_device_add(&hidg->cdev, &hidg->dev); if (status) - goto fail_free_descs; + goto fail_free_all; return 0; +fail_free_all: + destroy_workqueue(hidg->workqueue); fail_free_descs: usb_free_all_descriptors(f); fail: @@ -1021,6 +1296,9 @@ fail: if (hidg->req != NULL) free_ep_req(hidg->in_ep, hidg->req); + usb_ep_free_request(c->cdev->gadget->ep0, hidg->get_req); + hidg->get_req = NULL; + return status; } @@ -1028,9 +1306,9 @@ static inline int hidg_get_minor(void) { int ret; - ret = ida_simple_get(&hidg_ida, 0, 0, GFP_KERNEL); + ret = ida_alloc(&hidg_ida, GFP_KERNEL); if (ret >= HIDG_MINORS) { - ida_simple_remove(&hidg_ida, ret); + ida_free(&hidg_ida, ret); ret = -ENODEV; } @@ -1148,6 +1426,53 @@ end: CONFIGFS_ATTR(f_hid_opts_, report_desc); +static ssize_t f_hid_opts_interval_show(struct config_item *item, char *page) +{ + struct f_hid_opts *opts = to_f_hid_opts(item); + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, "%d\n", opts->interval); + mutex_unlock(&opts->lock); + + return result; +} + +static ssize_t f_hid_opts_interval_store(struct config_item *item, + const char *page, size_t len) +{ + struct f_hid_opts *opts = to_f_hid_opts(item); + int ret; + unsigned int tmp; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + /* parse into a wider type first */ + ret = kstrtouint(page, 0, &tmp); + if (ret) + goto end; + + /* range-check against unsigned char max */ + if (tmp > 255) { + ret = -EINVAL; + goto end; + } + + opts->interval = (unsigned char)tmp; + opts->interval_user_set = true; + ret = len; + +end: + mutex_unlock(&opts->lock); + return ret; +} + +CONFIGFS_ATTR(f_hid_opts_, interval); + static ssize_t f_hid_opts_dev_show(struct config_item *item, char *page) { struct f_hid_opts *opts = to_f_hid_opts(item); @@ -1162,6 +1487,7 @@ static struct configfs_attribute *hid_attrs[] = { &f_hid_opts_attr_protocol, &f_hid_opts_attr_no_out_endpoint, &f_hid_opts_attr_report_length, + &f_hid_opts_attr_interval, &f_hid_opts_attr_report_desc, &f_hid_opts_attr_dev, NULL, @@ -1175,7 +1501,7 @@ static const struct config_item_type hid_func_type = { static inline void hidg_put_minor(int minor) { - ida_simple_remove(&hidg_ida, minor); + ida_free(&hidg_ida, minor); } static void hidg_free_inst(struct usb_function_instance *f) @@ -1208,6 +1534,10 @@ static struct usb_function_instance *hidg_alloc_inst(void) if (!opts) return ERR_PTR(-ENOMEM); mutex_init(&opts->lock); + + opts->interval = 4; + opts->interval_user_set = false; + opts->func_inst.free_func_inst = hidg_free_inst; ret = &opts->func_inst; @@ -1255,7 +1585,7 @@ static void hidg_unbind(struct usb_configuration *c, struct usb_function *f) struct f_hidg *hidg = func_to_hidg(f); cdev_device_del(&hidg->cdev, &hidg->dev); - + destroy_workqueue(hidg->workqueue); usb_free_all_descriptors(f); } @@ -1286,10 +1616,12 @@ static struct usb_function *hidg_alloc(struct usb_function_instance *fi) hidg->bInterfaceProtocol = opts->protocol; hidg->report_length = opts->report_length; hidg->report_desc_length = opts->report_desc_length; + hidg->interval = opts->interval; + hidg->interval_user_set = opts->interval_user_set; if (opts->report_desc) { - hidg->report_desc = devm_kmemdup(&hidg->dev, opts->report_desc, - opts->report_desc_length, - GFP_KERNEL); + hidg->report_desc = kmemdup(opts->report_desc, + opts->report_desc_length, + GFP_KERNEL); if (!hidg->report_desc) { ret = -ENOMEM; goto err_put_device; @@ -1321,6 +1653,7 @@ err_unlock: } DECLARE_USB_FUNCTION_INIT(hid, hidg_alloc_inst, hidg_alloc); +MODULE_DESCRIPTION("USB HID function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Fabien Chouteau"); diff --git a/drivers/usb/gadget/function/f_loopback.c b/drivers/usb/gadget/function/f_loopback.c index ae41f556eb75..49b009a7d5d7 100644 --- a/drivers/usb/gadget/function/f_loopback.c +++ b/drivers/usb/gadget/function/f_loopback.c @@ -14,9 +14,9 @@ #include <linux/module.h> #include <linux/err.h> #include <linux/usb/composite.h> +#include <linux/usb/func_utils.h> #include "g_zero.h" -#include "u_f.h" /* * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, @@ -211,9 +211,7 @@ autoconf_fail: if (ret) return ret; - DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", - (gadget_is_superspeed(c->cdev->gadget) ? "super" : - (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")), + DBG(cdev, "%s: IN/%s, OUT/%s\n", f->name, loop->in_ep->name, loop->out_ep->name); return 0; } @@ -595,4 +593,5 @@ void __exit lb_modexit(void) usb_function_unregister(&Loopbackusb_func); } +MODULE_DESCRIPTION("USB peripheral loopback configuration driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index da07e45ae6df..94d478b6bcd3 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -188,7 +188,7 @@ #include <linux/freezer.h> #include <linux/module.h> #include <linux/uaccess.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -500,7 +500,7 @@ static int fsg_setup(struct usb_function *f, *(u8 *)req->buf = _fsg_common_get_max_lun(fsg->common); /* Respond with data/status */ - req->length = min((u16)1, w_length); + req->length = min_t(u16, 1, w_length); return ep0_queue(fsg->common); } @@ -545,21 +545,37 @@ static int start_transfer(struct fsg_dev *fsg, struct usb_ep *ep, static bool start_in_transfer(struct fsg_common *common, struct fsg_buffhd *bh) { + int rc; + if (!fsg_is_set(common)) return false; bh->state = BUF_STATE_SENDING; - if (start_transfer(common->fsg, common->fsg->bulk_in, bh->inreq)) + rc = start_transfer(common->fsg, common->fsg->bulk_in, bh->inreq); + if (rc) { bh->state = BUF_STATE_EMPTY; + if (rc == -ESHUTDOWN) { + common->running = 0; + return false; + } + } return true; } static bool start_out_transfer(struct fsg_common *common, struct fsg_buffhd *bh) { + int rc; + if (!fsg_is_set(common)) return false; bh->state = BUF_STATE_RECEIVING; - if (start_transfer(common->fsg, common->fsg->bulk_out, bh->outreq)) + rc = start_transfer(common->fsg, common->fsg->bulk_out, bh->outreq); + if (rc) { bh->state = BUF_STATE_FULL; + if (rc == -ESHUTDOWN) { + common->running = 0; + return false; + } + } return true; } @@ -639,7 +655,7 @@ static int do_read(struct fsg_common *common) * And don't try to read past the end of the file. */ amount = min(amount_left, FSG_BUFLEN); - amount = min((loff_t)amount, + amount = min_t(loff_t, amount, curlun->file_length - file_offset); /* Wait for the next buffer to become available */ @@ -927,7 +943,7 @@ static void invalidate_sub(struct fsg_lun *curlun) { struct file *filp = curlun->filp; struct inode *inode = file_inode(filp); - unsigned long rc; + unsigned long __maybe_unused rc; rc = invalidate_mapping_pages(inode->i_mapping, 0, -1); VLDBG(curlun, "invalidate_mapping_pages -> %ld\n", rc); @@ -989,7 +1005,7 @@ static int do_verify(struct fsg_common *common) * And don't try to read past the end of the file. */ amount = min(amount_left, FSG_BUFLEN); - amount = min((loff_t)amount, + amount = min_t(loff_t, amount, curlun->file_length - file_offset); if (amount == 0) { curlun->sense_data = @@ -2126,8 +2142,8 @@ static int do_scsi_command(struct fsg_common *common) * of Posix locks. */ case FORMAT_UNIT: - case RELEASE: - case RESERVE: + case RELEASE_6: + case RESERVE_6: case SEND_DIAGNOSTIC: default: @@ -2151,7 +2167,7 @@ unknown_cmnd: if (reply == -EINVAL) reply = 0; /* Error reply length */ if (reply >= 0 && common->data_dir == DATA_DIR_TO_HOST) { - reply = min((u32)reply, common->data_size_from_cmnd); + reply = min_t(u32, reply, common->data_size_from_cmnd); bh->inreq->length = reply; bh->state = BUF_STATE_FULL; common->residue -= reply; @@ -3034,7 +3050,7 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) if (!common->thread_task) { common->state = FSG_STATE_NORMAL; common->thread_task = - kthread_create(fsg_main_thread, common, "file-storage"); + kthread_run(fsg_main_thread, common, "file-storage"); if (IS_ERR(common->thread_task)) { ret = PTR_ERR(common->thread_task); common->thread_task = NULL; @@ -3043,7 +3059,6 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f) } DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task)); - wake_up_process(common->thread_task); } fsg->gadget = gadget; @@ -3561,6 +3576,7 @@ static struct usb_function *fsg_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(mass_storage, fsg_alloc_inst, fsg_alloc); +MODULE_DESCRIPTION("Mass Storage USB Composite Function"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Michal Nazarewicz"); diff --git a/drivers/usb/gadget/function/f_mass_storage.h b/drivers/usb/gadget/function/f_mass_storage.h index 3b8c4ce2a40a..82ecd3fedb3a 100644 --- a/drivers/usb/gadget/function/f_mass_storage.h +++ b/drivers/usb/gadget/function/f_mass_storage.h @@ -110,7 +110,7 @@ struct fsg_config { }; static inline struct fsg_opts * -fsg_opts_from_func_inst(const struct usb_function_instance *fi) +fsg_opts_from_func_inst(struct usb_function_instance *fi) { return container_of(fi, struct fsg_opts, func_inst); } diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c index fddf539008a9..da82598fcef8 100644 --- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -30,14 +30,15 @@ #include <sound/rawmidi.h> #include <linux/usb/ch9.h> +#include <linux/usb/func_utils.h> #include <linux/usb/gadget.h> #include <linux/usb/audio.h> #include <linux/usb/midi.h> -#include "u_f.h" #include "u_midi.h" MODULE_AUTHOR("Ben Williamson"); +MODULE_DESCRIPTION("USB MIDI class function driver"); MODULE_LICENSE("GPL v2"); static const char f_midi_shortname[] = "f_midi"; @@ -99,7 +100,7 @@ struct f_midi { unsigned int in_last_port; unsigned char free_ref; - struct gmidi_in_port in_ports_array[/* in_ports */]; + struct gmidi_in_port in_ports_array[] __counted_by(in_ports); }; static inline struct f_midi *func_to_midi(struct usb_function *f) @@ -282,7 +283,7 @@ f_midi_complete(struct usb_ep *ep, struct usb_request *req) /* Our transmit completed. See if there's more to go. * f_midi_transmit eats req, don't queue it again. */ req->length = 0; - f_midi_transmit(midi); + queue_work(system_highpri_wq, &midi->work); return; } break; @@ -818,9 +819,9 @@ static int f_midi_register_card(struct f_midi *midi) goto fail; } - strcpy(card->driver, f_midi_longname); - strcpy(card->longname, f_midi_longname); - strcpy(card->shortname, f_midi_shortname); + strscpy(card->driver, f_midi_longname); + strscpy(card->longname, f_midi_longname); + strscpy(card->shortname, f_midi_shortname); /* Set up rawmidi */ snd_component_add(card, "MIDI"); @@ -832,7 +833,7 @@ static int f_midi_register_card(struct f_midi *midi) } midi->rmidi = rmidi; midi->in_last_port = 0; - strcpy(rmidi->name, card->shortname); + strscpy(rmidi->name, card->shortname); rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | SNDRV_RAWMIDI_INFO_INPUT | SNDRV_RAWMIDI_INFO_DUPLEX; @@ -906,6 +907,15 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f) status = -ENODEV; + /* + * Reset wMaxPacketSize with maximum packet size of FS bulk transfer before + * endpoint claim. This ensures that the wMaxPacketSize does not exceed the + * limit during bind retries where configured dwc3 TX/RX FIFO's maxpacket + * size of 512 bytes for IN/OUT endpoints in support HS speed only. + */ + bulk_in_desc.wMaxPacketSize = cpu_to_le16(64); + bulk_out_desc.wMaxPacketSize = cpu_to_le16(64); + /* allocate instance-specific endpoints */ midi->in_ep = usb_ep_autoconfig(cdev->gadget, &bulk_in_desc); if (!midi->in_ep) @@ -999,11 +1009,11 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f) } /* configure the endpoint descriptors ... */ - ms_out_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->in_ports); - ms_out_desc.bNumEmbMIDIJack = midi->in_ports; + ms_out_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->out_ports); + ms_out_desc.bNumEmbMIDIJack = midi->out_ports; - ms_in_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->out_ports); - ms_in_desc.bNumEmbMIDIJack = midi->out_ports; + ms_in_desc.bLength = USB_DT_MS_ENDPOINT_SIZE(midi->in_ports); + ms_in_desc.bNumEmbMIDIJack = midi->in_ports; /* ... and add them to the list */ endpoint_descriptor_index = i; @@ -1023,40 +1033,30 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f) if (!f->fs_descriptors) goto fail_f_midi; - if (gadget_is_dualspeed(c->cdev->gadget)) { - bulk_in_desc.wMaxPacketSize = cpu_to_le16(512); - bulk_out_desc.wMaxPacketSize = cpu_to_le16(512); - f->hs_descriptors = usb_copy_descriptors(midi_function); - if (!f->hs_descriptors) - goto fail_f_midi; - } + bulk_in_desc.wMaxPacketSize = cpu_to_le16(512); + bulk_out_desc.wMaxPacketSize = cpu_to_le16(512); + f->hs_descriptors = usb_copy_descriptors(midi_function); + if (!f->hs_descriptors) + goto fail_f_midi; - if (gadget_is_superspeed(c->cdev->gadget)) { - bulk_in_desc.wMaxPacketSize = cpu_to_le16(1024); - bulk_out_desc.wMaxPacketSize = cpu_to_le16(1024); - i = endpoint_descriptor_index; - midi_function[i++] = (struct usb_descriptor_header *) - &bulk_out_desc; - midi_function[i++] = (struct usb_descriptor_header *) - &bulk_out_ss_comp_desc; - midi_function[i++] = (struct usb_descriptor_header *) - &ms_out_desc; - midi_function[i++] = (struct usb_descriptor_header *) - &bulk_in_desc; - midi_function[i++] = (struct usb_descriptor_header *) - &bulk_in_ss_comp_desc; - midi_function[i++] = (struct usb_descriptor_header *) - &ms_in_desc; - f->ss_descriptors = usb_copy_descriptors(midi_function); - if (!f->ss_descriptors) - goto fail_f_midi; - - if (gadget_is_superspeed_plus(c->cdev->gadget)) { - f->ssp_descriptors = usb_copy_descriptors(midi_function); - if (!f->ssp_descriptors) - goto fail_f_midi; - } - } + bulk_in_desc.wMaxPacketSize = cpu_to_le16(1024); + bulk_out_desc.wMaxPacketSize = cpu_to_le16(1024); + i = endpoint_descriptor_index; + midi_function[i++] = (struct usb_descriptor_header *) + &bulk_out_desc; + midi_function[i++] = (struct usb_descriptor_header *) + &bulk_out_ss_comp_desc; + midi_function[i++] = (struct usb_descriptor_header *) + &ms_out_desc; + midi_function[i++] = (struct usb_descriptor_header *) + &bulk_in_desc; + midi_function[i++] = (struct usb_descriptor_header *) + &bulk_in_ss_comp_desc; + midi_function[i++] = (struct usb_descriptor_header *) + &ms_in_desc; + f->ss_descriptors = usb_copy_descriptors(midi_function); + if (!f->ss_descriptors) + goto fail_f_midi; kfree(midi_function); @@ -1187,11 +1187,11 @@ F_MIDI_OPT(out_ports, true, MAX_PORTS); static ssize_t f_midi_opts_id_show(struct config_item *item, char *page) { struct f_midi_opts *opts = to_f_midi_opts(item); - int result; + ssize_t result; mutex_lock(&opts->lock); if (opts->id) { - result = strlcpy(page, opts->id, PAGE_SIZE); + result = strscpy(page, opts->id, PAGE_SIZE); } else { page[0] = 0; result = 0; @@ -1359,6 +1359,7 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) status = -ENOMEM; goto setup_fail; } + midi->in_ports = opts->in_ports; for (i = 0; i < opts->in_ports; i++) midi->in_ports_array[i].cable = i; @@ -1369,7 +1370,6 @@ static struct usb_function *f_midi_alloc(struct usb_function_instance *fi) status = -ENOMEM; goto midi_free; } - midi->in_ports = opts->in_ports; midi->out_ports = opts->out_ports; midi->index = opts->index; midi->buflen = opts->buflen; diff --git a/drivers/usb/gadget/function/f_midi2.c b/drivers/usb/gadget/function/f_midi2.c new file mode 100644 index 000000000000..de16b02d857e --- /dev/null +++ b/drivers/usb/gadget/function/f_midi2.c @@ -0,0 +1,2893 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * f_midi2.c -- USB MIDI 2.0 class function driver + */ + +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> + +#include <sound/core.h> +#include <sound/control.h> +#include <sound/ump.h> +#include <sound/ump_msg.h> +#include <sound/ump_convert.h> + +#include <linux/usb/ch9.h> +#include <linux/usb/func_utils.h> +#include <linux/usb/gadget.h> +#include <linux/usb/audio.h> +#include <linux/usb/midi-v2.h> + +#include "u_midi2.h" + +struct f_midi2; +struct f_midi2_ep; +struct f_midi2_usb_ep; + +/* Context for each USB request */ +struct f_midi2_req_ctx { + struct f_midi2_usb_ep *usb_ep; /* belonging USB EP */ + unsigned int index; /* array index: 0-31 */ + struct usb_request *req; /* assigned request */ +}; + +/* Resources for a USB Endpoint */ +struct f_midi2_usb_ep { + struct f_midi2 *card; /* belonging card */ + struct f_midi2_ep *ep; /* belonging UMP EP (optional) */ + struct usb_ep *usb_ep; /* assigned USB EP */ + void (*complete)(struct usb_ep *usb_ep, struct usb_request *req); + unsigned long free_reqs; /* bitmap for unused requests */ + unsigned int num_reqs; /* number of allocated requests */ + struct f_midi2_req_ctx *reqs; /* request context array */ +}; + +/* Resources for UMP Function Block (and USB Group Terminal Block) */ +struct f_midi2_block { + struct f_midi2_block_info info; /* FB info, copied from configfs */ + struct snd_ump_block *fb; /* assigned FB */ + unsigned int gtb_id; /* assigned GTB id */ + unsigned int string_id; /* assigned string id */ +}; + +/* Temporary buffer for altset 0 MIDI 1.0 handling */ +struct f_midi2_midi1_port { + unsigned int pending; /* pending bytes on the input buffer */ + u8 buf[32]; /* raw MIDI 1.0 byte input */ + u8 state; /* running status */ + u8 data[2]; /* rendered USB MIDI 1.0 packet data */ +}; + +/* MIDI 1.0 message states */ +enum { + STATE_INITIAL = 0, /* pseudo state */ + STATE_1PARAM, + STATE_2PARAM_1, + STATE_2PARAM_2, + STATE_SYSEX_0, + STATE_SYSEX_1, + STATE_SYSEX_2, + STATE_REAL_TIME, + STATE_FINISHED, /* pseudo state */ +}; + +/* Resources for UMP Endpoint */ +struct f_midi2_ep { + struct snd_ump_endpoint *ump; /* assigned UMP EP */ + struct f_midi2 *card; /* belonging MIDI 2.0 device */ + + struct f_midi2_ep_info info; /* UMP EP info, copied from configfs */ + unsigned int num_blks; /* number of FBs */ + struct f_midi2_block blks[SNDRV_UMP_MAX_BLOCKS]; /* UMP FBs */ + + struct f_midi2_usb_ep ep_in; /* USB MIDI EP-in */ + struct f_midi2_usb_ep ep_out; /* USB MIDI EP-out */ + + u8 in_group_to_cable[SNDRV_UMP_MAX_GROUPS]; /* map to cable; 1-based! */ +}; + +/* indices for USB strings */ +enum { + STR_IFACE = 0, + STR_GTB1 = 1, +}; + +/* 1-based GTB id to string id */ +#define gtb_to_str_id(id) (STR_GTB1 + (id) - 1) + +/* mapping from MIDI 1.0 cable to UMP group */ +struct midi1_cable_mapping { + struct f_midi2_ep *ep; + unsigned char block; + unsigned char group; +}; + +/* operation mode */ +enum { + MIDI_OP_MODE_UNSET, /* no altset set yet */ + MIDI_OP_MODE_MIDI1, /* MIDI 1.0 (altset 0) is used */ + MIDI_OP_MODE_MIDI2, /* MIDI 2.0 (altset 1) is used */ +}; + +/* Resources for MIDI 2.0 Device */ +struct f_midi2 { + struct usb_function func; + struct usb_gadget *gadget; + struct snd_card *card; + + /* MIDI 1.0 in/out USB EPs */ + struct f_midi2_usb_ep midi1_ep_in; + struct f_midi2_usb_ep midi1_ep_out; + + /* number of MIDI 1.0 I/O cables */ + unsigned int num_midi1_in; + unsigned int num_midi1_out; + + /* conversion for MIDI 1.0 EP-in */ + struct f_midi2_midi1_port midi1_port[MAX_CABLES]; + /* conversion for MIDI 1.0 EP-out */ + struct ump_cvt_to_ump midi1_ump_cvt; + /* mapping between cables and UMP groups */ + struct midi1_cable_mapping in_cable_mapping[MAX_CABLES]; + struct midi1_cable_mapping out_cable_mapping[MAX_CABLES]; + + int midi_if; /* USB MIDI interface number */ + int operation_mode; /* current operation mode */ + + spinlock_t queue_lock; + + struct f_midi2_card_info info; /* card info, copied from configfs */ + + unsigned int num_eps; + struct f_midi2_ep midi2_eps[MAX_UMP_EPS]; + + unsigned int total_blocks; /* total number of blocks of all EPs */ + struct usb_string *string_defs; + struct usb_string *strings; +}; + +#define func_to_midi2(f) container_of(f, struct f_midi2, func) + +/* convert from MIDI protocol number (1 or 2) to SNDRV_UMP_EP_INFO_PROTO_* */ +#define to_ump_protocol(v) (((v) & 3) << 8) + +/* get EP name string */ +static const char *ump_ep_name(const struct f_midi2_ep *ep) +{ + return ep->info.ep_name ? ep->info.ep_name : "MIDI 2.0 Gadget"; +} + +/* get EP product ID string */ +static const char *ump_product_id(const struct f_midi2_ep *ep) +{ + return ep->info.product_id ? ep->info.product_id : "Unique Product ID"; +} + +/* get FB name string */ +static const char *ump_fb_name(const struct f_midi2_block_info *info) +{ + return info->name ? info->name : "MIDI 2.0 Gadget I/O"; +} + +/* + * USB Descriptor Definitions + */ +/* GTB header descriptor */ +static struct usb_ms20_gr_trm_block_header_descriptor gtb_header_desc = { + .bLength = sizeof(gtb_header_desc), + .bDescriptorType = USB_DT_CS_GR_TRM_BLOCK, + .bDescriptorSubtype = USB_MS_GR_TRM_BLOCK_HEADER, + .wTotalLength = __cpu_to_le16(0x12), // to be filled +}; + +/* GTB descriptor template: most items are replaced dynamically */ +static struct usb_ms20_gr_trm_block_descriptor gtb_desc = { + .bLength = sizeof(gtb_desc), + .bDescriptorType = USB_DT_CS_GR_TRM_BLOCK, + .bDescriptorSubtype = USB_MS_GR_TRM_BLOCK, + .bGrpTrmBlkID = 0x01, + .bGrpTrmBlkType = USB_MS_GR_TRM_BLOCK_TYPE_BIDIRECTIONAL, + .nGroupTrm = 0x00, + .nNumGroupTrm = 1, + .iBlockItem = 0, + .bMIDIProtocol = USB_MS_MIDI_PROTO_1_0_64, + .wMaxInputBandwidth = 0, + .wMaxOutputBandwidth = 0, +}; + +DECLARE_USB_MIDI_OUT_JACK_DESCRIPTOR(1); +DECLARE_USB_MS_ENDPOINT_DESCRIPTOR(16); +DECLARE_UAC_AC_HEADER_DESCRIPTOR(1); +DECLARE_USB_MS20_ENDPOINT_DESCRIPTOR(32); + +#define EP_MAX_PACKET_INT 8 + +/* Audio Control Interface */ +static struct usb_interface_descriptor midi2_audio_if_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, // to be filled + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, + .bInterfaceProtocol = 0, + .iInterface = 0, +}; + +static struct uac1_ac_header_descriptor_1 midi2_audio_class_desc = { + .bLength = 0x09, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = 0x01, + .bcdADC = __cpu_to_le16(0x0100), + .wTotalLength = __cpu_to_le16(0x0009), + .bInCollection = 0x01, + .baInterfaceNr = { 0x01 }, // to be filled +}; + +/* MIDI 1.0 Streaming Interface (altset 0) */ +static struct usb_interface_descriptor midi2_midi1_if_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, // to be filled + .bAlternateSetting = 0, + .bNumEndpoints = 2, // to be filled + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING, + .bInterfaceProtocol = 0, + .iInterface = 0, // to be filled +}; + +static struct usb_ms_header_descriptor midi2_midi1_class_desc = { + .bLength = 0x07, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = USB_MS_HEADER, + .bcdMSC = __cpu_to_le16(0x0100), + .wTotalLength = __cpu_to_le16(0x41), // to be calculated +}; + +/* MIDI 1.0 EP OUT */ +static struct usb_endpoint_descriptor midi2_midi1_ep_out_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT | 0, // set up dynamically + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_ss_ep_comp_descriptor midi2_midi1_ep_out_ss_comp_desc = { + .bLength = sizeof(midi2_midi1_ep_out_ss_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_ms_endpoint_descriptor_16 midi2_midi1_ep_out_class_desc = { + .bLength = 0x05, // to be filled + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubtype = USB_MS_GENERAL, + .bNumEmbMIDIJack = 1, + .baAssocJackID = { 0x01 }, +}; + +/* MIDI 1.0 EP IN */ +static struct usb_endpoint_descriptor midi2_midi1_ep_in_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN | 0, // set up dynamically + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_ss_ep_comp_descriptor midi2_midi1_ep_in_ss_comp_desc = { + .bLength = sizeof(midi2_midi1_ep_in_ss_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_ms_endpoint_descriptor_16 midi2_midi1_ep_in_class_desc = { + .bLength = 0x05, // to be filled + .bDescriptorType = USB_DT_CS_ENDPOINT, + .bDescriptorSubtype = USB_MS_GENERAL, + .bNumEmbMIDIJack = 1, + .baAssocJackID = { 0x03 }, +}; + +/* MIDI 2.0 Streaming Interface (altset 1) */ +static struct usb_interface_descriptor midi2_midi2_if_desc = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, // to be filled + .bAlternateSetting = 1, + .bNumEndpoints = 2, // to be filled + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_MIDISTREAMING, + .bInterfaceProtocol = 0, + .iInterface = 0, // to be filled +}; + +static struct usb_ms_header_descriptor midi2_midi2_class_desc = { + .bLength = 0x07, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubtype = USB_MS_HEADER, + .bcdMSC = __cpu_to_le16(0x0200), + .wTotalLength = __cpu_to_le16(0x07), +}; + +/* MIDI 2.0 EP OUT */ +static struct usb_endpoint_descriptor midi2_midi2_ep_out_desc[MAX_UMP_EPS]; + +static struct usb_ss_ep_comp_descriptor midi2_midi2_ep_out_ss_comp_desc = { + .bLength = sizeof(midi2_midi1_ep_out_ss_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_ms20_endpoint_descriptor_32 midi2_midi2_ep_out_class_desc[MAX_UMP_EPS]; + +/* MIDI 2.0 EP IN */ +static struct usb_endpoint_descriptor midi2_midi2_ep_in_desc[MAX_UMP_EPS]; + +static struct usb_ss_ep_comp_descriptor midi2_midi2_ep_in_ss_comp_desc = { + .bLength = sizeof(midi2_midi2_ep_in_ss_comp_desc), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, +}; + +static struct usb_ms20_endpoint_descriptor_32 midi2_midi2_ep_in_class_desc[MAX_UMP_EPS]; + +/* Arrays of descriptors to be created */ +static void *midi2_audio_descs[] = { + &midi2_audio_if_desc, + &midi2_audio_class_desc, + NULL +}; + +static void *midi2_midi1_descs[] = { + &midi2_midi1_if_desc, + &midi2_midi1_class_desc, + NULL +}; + +static void *midi2_midi1_ep_out_descs[] = { + &midi2_midi1_ep_out_desc, + &midi2_midi1_ep_out_class_desc, + NULL +}; + +static void *midi2_midi1_ep_in_descs[] = { + &midi2_midi1_ep_in_desc, + &midi2_midi1_ep_in_class_desc, + NULL +}; + +static void *midi2_midi1_ep_out_ss_descs[] = { + &midi2_midi1_ep_out_desc, + &midi2_midi1_ep_out_ss_comp_desc, + &midi2_midi1_ep_out_class_desc, + NULL +}; + +static void *midi2_midi1_ep_in_ss_descs[] = { + &midi2_midi1_ep_in_desc, + &midi2_midi1_ep_in_ss_comp_desc, + &midi2_midi1_ep_in_class_desc, + NULL +}; + +static void *midi2_midi2_descs[] = { + &midi2_midi2_if_desc, + &midi2_midi2_class_desc, + NULL +}; + +/* + * USB request handling + */ + +/* get an empty request for the given EP */ +static struct usb_request *get_empty_request(struct f_midi2_usb_ep *usb_ep) +{ + struct usb_request *req = NULL; + unsigned long flags; + int index; + + spin_lock_irqsave(&usb_ep->card->queue_lock, flags); + if (!usb_ep->free_reqs) + goto unlock; + index = find_first_bit(&usb_ep->free_reqs, usb_ep->num_reqs); + if (index >= usb_ep->num_reqs) + goto unlock; + req = usb_ep->reqs[index].req; + if (!req) + goto unlock; + clear_bit(index, &usb_ep->free_reqs); + req->length = 0; + unlock: + spin_unlock_irqrestore(&usb_ep->card->queue_lock, flags); + return req; +} + +/* put the empty request back */ +static void put_empty_request(struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + unsigned long flags; + + spin_lock_irqsave(&ctx->usb_ep->card->queue_lock, flags); + set_bit(ctx->index, &ctx->usb_ep->free_reqs); + spin_unlock_irqrestore(&ctx->usb_ep->card->queue_lock, flags); +} + +/* + * UMP v1.1 Stream message handling + */ + +/* queue a request to UMP EP; request is either queued or freed after this */ +static int queue_request_ep_raw(struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + int err; + + req->complete = ctx->usb_ep->complete; + err = usb_ep_queue(ctx->usb_ep->usb_ep, req, GFP_ATOMIC); + if (err) { + put_empty_request(req); + return err; + } + return 0; +} + +/* queue a request with endianness conversion */ +static int queue_request_ep_in(struct usb_request *req) +{ + /* UMP packets have to be converted to little-endian */ + cpu_to_le32_array((u32 *)req->buf, req->length >> 2); + return queue_request_ep_raw(req); +} + +/* reply a UMP packet via EP-in */ +static int reply_ep_in(struct f_midi2_ep *ep, const void *buf, int len) +{ + struct f_midi2_usb_ep *usb_ep = &ep->ep_in; + struct usb_request *req; + + req = get_empty_request(usb_ep); + if (!req) + return -ENOSPC; + + req->length = len; + memcpy(req->buf, buf, len); + return queue_request_ep_in(req); +} + +/* reply a UMP stream EP info */ +static void reply_ump_stream_ep_info(struct f_midi2_ep *ep) +{ + struct snd_ump_stream_msg_ep_info rep = { + .type = UMP_MSG_TYPE_STREAM, + .status = UMP_STREAM_MSG_STATUS_EP_INFO, + .ump_version_major = 0x01, + .ump_version_minor = 0x01, + .num_function_blocks = ep->num_blks, + .static_function_block = !!ep->card->info.static_block, + .protocol = (UMP_STREAM_MSG_EP_INFO_CAP_MIDI1 | + UMP_STREAM_MSG_EP_INFO_CAP_MIDI2) >> 8, + }; + + reply_ep_in(ep, &rep, sizeof(rep)); +} + +/* reply a UMP EP device info */ +static void reply_ump_stream_ep_device(struct f_midi2_ep *ep) +{ + struct snd_ump_stream_msg_device_info rep = { + .type = UMP_MSG_TYPE_STREAM, + .status = UMP_STREAM_MSG_STATUS_DEVICE_INFO, + .manufacture_id = ep->info.manufacturer, + .family_lsb = ep->info.family & 0xff, + .family_msb = (ep->info.family >> 8) & 0xff, + .model_lsb = ep->info.model & 0xff, + .model_msb = (ep->info.model >> 8) & 0xff, + .sw_revision = ep->info.sw_revision, + }; + + reply_ep_in(ep, &rep, sizeof(rep)); +} + +#define UMP_STREAM_PKT_BYTES 16 /* UMP stream packet size = 16 bytes*/ +#define UMP_STREAM_EP_STR_OFF 2 /* offset of name string for EP info */ +#define UMP_STREAM_FB_STR_OFF 3 /* offset of name string for FB info */ + +/* Helper to replay a string */ +static void reply_ump_stream_string(struct f_midi2_ep *ep, const u8 *name, + unsigned int type, unsigned int extra, + unsigned int start_ofs) +{ + struct f_midi2_usb_ep *usb_ep = &ep->ep_in; + struct f_midi2 *midi2 = ep->card; + struct usb_request *req; + unsigned int pos; + u32 *buf; + + if (!*name) + return; + req = get_empty_request(usb_ep); + if (!req) + return; + + buf = (u32 *)req->buf; + pos = start_ofs; + for (;;) { + if (pos == start_ofs) { + memset(buf, 0, UMP_STREAM_PKT_BYTES); + buf[0] = ump_stream_compose(type, 0) | extra; + } + buf[pos / 4] |= *name++ << ((3 - (pos % 4)) * 8); + if (!*name) { + if (req->length) + buf[0] |= UMP_STREAM_MSG_FORMAT_END << 26; + req->length += UMP_STREAM_PKT_BYTES; + break; + } + if (++pos == UMP_STREAM_PKT_BYTES) { + if (!req->length) + buf[0] |= UMP_STREAM_MSG_FORMAT_START << 26; + else + buf[0] |= UMP_STREAM_MSG_FORMAT_CONTINUE << 26; + req->length += UMP_STREAM_PKT_BYTES; + if (midi2->info.req_buf_size - req->length < UMP_STREAM_PKT_BYTES) + break; + buf += 4; + pos = start_ofs; + } + } + + if (req->length) + queue_request_ep_in(req); + else + put_empty_request(req); +} + +/* Reply a UMP EP name string */ +static void reply_ump_stream_ep_name(struct f_midi2_ep *ep) +{ + reply_ump_stream_string(ep, ump_ep_name(ep), + UMP_STREAM_MSG_STATUS_EP_NAME, 0, + UMP_STREAM_EP_STR_OFF); +} + +/* Reply a UMP EP product ID string */ +static void reply_ump_stream_ep_pid(struct f_midi2_ep *ep) +{ + reply_ump_stream_string(ep, ump_product_id(ep), + UMP_STREAM_MSG_STATUS_PRODUCT_ID, 0, + UMP_STREAM_EP_STR_OFF); +} + +/* Reply a UMP EP stream config */ +static void reply_ump_stream_ep_config(struct f_midi2_ep *ep) +{ + struct snd_ump_stream_msg_stream_cfg rep = { + .type = UMP_MSG_TYPE_STREAM, + .status = UMP_STREAM_MSG_STATUS_STREAM_CFG, + }; + + if (ep->info.protocol == 2) + rep.protocol = UMP_STREAM_MSG_EP_INFO_CAP_MIDI2 >> 8; + else + rep.protocol = UMP_STREAM_MSG_EP_INFO_CAP_MIDI1 >> 8; + + reply_ep_in(ep, &rep, sizeof(rep)); +} + +/* Reply a UMP FB info */ +static void reply_ump_stream_fb_info(struct f_midi2_ep *ep, int blk) +{ + struct f_midi2_block_info *b = &ep->blks[blk].info; + struct snd_ump_stream_msg_fb_info rep = { + .type = UMP_MSG_TYPE_STREAM, + .status = UMP_STREAM_MSG_STATUS_FB_INFO, + .active = !!b->active, + .function_block_id = blk, + .ui_hint = b->ui_hint, + .midi_10 = b->is_midi1, + .direction = b->direction, + .first_group = b->first_group, + .num_groups = b->num_groups, + .midi_ci_version = b->midi_ci_version, + .sysex8_streams = b->sysex8_streams, + }; + + reply_ep_in(ep, &rep, sizeof(rep)); +} + +/* Reply a FB name string */ +static void reply_ump_stream_fb_name(struct f_midi2_ep *ep, unsigned int blk) +{ + reply_ump_stream_string(ep, ump_fb_name(&ep->blks[blk].info), + UMP_STREAM_MSG_STATUS_FB_NAME, blk << 8, + UMP_STREAM_FB_STR_OFF); +} + +/* Process a UMP Stream message */ +static void process_ump_stream_msg(struct f_midi2_ep *ep, const u32 *data) +{ + struct f_midi2 *midi2 = ep->card; + unsigned int format, status, blk; + + format = ump_stream_message_format(*data); + status = ump_stream_message_status(*data); + switch (status) { + case UMP_STREAM_MSG_STATUS_EP_DISCOVERY: + if (format) + return; // invalid + if (data[1] & UMP_STREAM_MSG_REQUEST_EP_INFO) + reply_ump_stream_ep_info(ep); + if (data[1] & UMP_STREAM_MSG_REQUEST_DEVICE_INFO) + reply_ump_stream_ep_device(ep); + if (data[1] & UMP_STREAM_MSG_REQUEST_EP_NAME) + reply_ump_stream_ep_name(ep); + if (data[1] & UMP_STREAM_MSG_REQUEST_PRODUCT_ID) + reply_ump_stream_ep_pid(ep); + if (data[1] & UMP_STREAM_MSG_REQUEST_STREAM_CFG) + reply_ump_stream_ep_config(ep); + return; + case UMP_STREAM_MSG_STATUS_STREAM_CFG_REQUEST: + if (*data & UMP_STREAM_MSG_EP_INFO_CAP_MIDI2) { + ep->info.protocol = 2; + DBG(midi2, "Switching Protocol to MIDI2\n"); + } else { + ep->info.protocol = 1; + DBG(midi2, "Switching Protocol to MIDI1\n"); + } + snd_ump_switch_protocol(ep->ump, to_ump_protocol(ep->info.protocol)); + reply_ump_stream_ep_config(ep); + return; + case UMP_STREAM_MSG_STATUS_FB_DISCOVERY: + if (format) + return; // invalid + blk = (*data >> 8) & 0xff; + if (blk == 0xff) { + /* inquiry for all blocks */ + for (blk = 0; blk < ep->num_blks; blk++) { + if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO) + reply_ump_stream_fb_info(ep, blk); + if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME) + reply_ump_stream_fb_name(ep, blk); + } + } else if (blk < ep->num_blks) { + /* only the specified block */ + if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO) + reply_ump_stream_fb_info(ep, blk); + if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME) + reply_ump_stream_fb_name(ep, blk); + } + return; + } +} + +/* Process UMP messages included in a USB request */ +static void process_ump(struct f_midi2_ep *ep, const struct usb_request *req) +{ + const u32 *data = (u32 *)req->buf; + int len = req->actual >> 2; + const u32 *in_buf = ep->ump->input_buf; + + for (; len > 0; len--, data++) { + if (snd_ump_receive_ump_val(ep->ump, *data) <= 0) + continue; + if (ump_message_type(*in_buf) == UMP_MSG_TYPE_STREAM) + process_ump_stream_msg(ep, in_buf); + } +} + +/* + * MIDI 2.0 UMP USB request handling + */ + +/* complete handler for UMP EP-out requests */ +static void f_midi2_ep_out_complete(struct usb_ep *usb_ep, + struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + struct f_midi2_ep *ep = ctx->usb_ep->ep; + struct f_midi2 *midi2 = ep->card; + int status = req->status; + + if (status) { + DBG(midi2, "%s complete error %d: %d/%d\n", + usb_ep->name, status, req->actual, req->length); + goto error; + } + + /* convert to UMP packet in native endianness */ + le32_to_cpu_array((u32 *)req->buf, req->actual >> 2); + + if (midi2->info.process_ump) + process_ump(ep, req); + + snd_ump_receive(ep->ump, req->buf, req->actual & ~3); + + if (midi2->operation_mode != MIDI_OP_MODE_MIDI2) + goto error; + + if (queue_request_ep_raw(req)) + goto error; + return; + + error: + put_empty_request(req); +} + +/* Transmit UMP packets received from user-space to the gadget */ +static void process_ump_transmit(struct f_midi2_ep *ep) +{ + struct f_midi2_usb_ep *usb_ep = &ep->ep_in; + struct f_midi2 *midi2 = ep->card; + struct usb_request *req; + int len; + + if (!usb_ep->usb_ep->enabled) + return; + + for (;;) { + req = get_empty_request(usb_ep); + if (!req) + break; + len = snd_ump_transmit(ep->ump, (u32 *)req->buf, + midi2->info.req_buf_size); + if (len <= 0) { + put_empty_request(req); + break; + } + + req->length = len; + if (queue_request_ep_in(req) < 0) + break; + } +} + +/* Complete handler for UMP EP-in requests */ +static void f_midi2_ep_in_complete(struct usb_ep *usb_ep, + struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + struct f_midi2_ep *ep = ctx->usb_ep->ep; + struct f_midi2 *midi2 = ep->card; + int status = req->status; + + put_empty_request(req); + + if (status) { + DBG(midi2, "%s complete error %d: %d/%d\n", + usb_ep->name, status, req->actual, req->length); + return; + } + + process_ump_transmit(ep); +} + +/* + * MIDI1 (altset 0) USB request handling + */ + +/* process one MIDI byte -- copied from f_midi.c + * + * fill the packet or request if needed + * returns true if the request became empty (queued) + */ +static bool process_midi1_byte(struct f_midi2 *midi2, u8 cable, u8 b, + struct usb_request **req_p) +{ + struct f_midi2_midi1_port *port = &midi2->midi1_port[cable]; + u8 p[4] = { cable << 4, 0, 0, 0 }; + int next_state = STATE_INITIAL; + struct usb_request *req = *req_p; + + switch (b) { + case 0xf8 ... 0xff: + /* System Real-Time Messages */ + p[0] |= 0x0f; + p[1] = b; + next_state = port->state; + port->state = STATE_REAL_TIME; + break; + + case 0xf7: + /* End of SysEx */ + switch (port->state) { + case STATE_SYSEX_0: + p[0] |= 0x05; + p[1] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_1: + p[0] |= 0x06; + p[1] = port->data[0]; + p[2] = 0xf7; + next_state = STATE_FINISHED; + break; + case STATE_SYSEX_2: + p[0] |= 0x07; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = 0xf7; + next_state = STATE_FINISHED; + break; + default: + /* Ignore byte */ + next_state = port->state; + port->state = STATE_INITIAL; + } + break; + + case 0xf0 ... 0xf6: + /* System Common Messages */ + port->data[0] = port->data[1] = 0; + port->state = STATE_INITIAL; + switch (b) { + case 0xf0: + port->data[0] = b; + port->data[1] = 0; + next_state = STATE_SYSEX_1; + break; + case 0xf1: + case 0xf3: + port->data[0] = b; + next_state = STATE_1PARAM; + break; + case 0xf2: + port->data[0] = b; + next_state = STATE_2PARAM_1; + break; + case 0xf4: + case 0xf5: + next_state = STATE_INITIAL; + break; + case 0xf6: + p[0] |= 0x05; + p[1] = 0xf6; + next_state = STATE_FINISHED; + break; + } + break; + + case 0x80 ... 0xef: + /* + * Channel Voice Messages, Channel Mode Messages + * and Control Change Messages. + */ + port->data[0] = b; + port->data[1] = 0; + port->state = STATE_INITIAL; + if (b >= 0xc0 && b <= 0xdf) + next_state = STATE_1PARAM; + else + next_state = STATE_2PARAM_1; + break; + + case 0x00 ... 0x7f: + /* Message parameters */ + switch (port->state) { + case STATE_1PARAM: + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x02; + + p[1] = port->data[0]; + p[2] = b; + /* This is to allow Running State Messages */ + next_state = STATE_1PARAM; + break; + case STATE_2PARAM_1: + port->data[1] = b; + next_state = STATE_2PARAM_2; + break; + case STATE_2PARAM_2: + if (port->data[0] < 0xf0) + p[0] |= port->data[0] >> 4; + else + p[0] |= 0x03; + + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + /* This is to allow Running State Messages */ + next_state = STATE_2PARAM_1; + break; + case STATE_SYSEX_0: + port->data[0] = b; + next_state = STATE_SYSEX_1; + break; + case STATE_SYSEX_1: + port->data[1] = b; + next_state = STATE_SYSEX_2; + break; + case STATE_SYSEX_2: + p[0] |= 0x04; + p[1] = port->data[0]; + p[2] = port->data[1]; + p[3] = b; + next_state = STATE_SYSEX_0; + break; + } + break; + } + + /* States where we have to write into the USB request */ + if (next_state == STATE_FINISHED || + port->state == STATE_SYSEX_2 || + port->state == STATE_1PARAM || + port->state == STATE_2PARAM_2 || + port->state == STATE_REAL_TIME) { + memcpy(req->buf + req->length, p, sizeof(p)); + req->length += sizeof(p); + + if (next_state == STATE_FINISHED) { + next_state = STATE_INITIAL; + port->data[0] = port->data[1] = 0; + } + + if (midi2->info.req_buf_size - req->length <= 4) { + queue_request_ep_raw(req); + *req_p = NULL; + return true; + } + } + + port->state = next_state; + return false; +} + +/* process all pending MIDI bytes in the internal buffer; + * returns true if the request gets empty + * returns false if all have been processed + */ +static bool process_midi1_pending_buf(struct f_midi2 *midi2, + struct usb_request **req_p) +{ + unsigned int cable, c; + + for (cable = 0; cable < midi2->num_midi1_in; cable++) { + struct f_midi2_midi1_port *port = &midi2->midi1_port[cable]; + + if (!port->pending) + continue; + for (c = 0; c < port->pending; c++) { + if (process_midi1_byte(midi2, cable, port->buf[c], + req_p)) { + port->pending -= c; + if (port->pending) + memmove(port->buf, port->buf + c, + port->pending); + return true; + } + } + port->pending = 0; + } + + return false; +} + +/* fill the MIDI bytes onto the temporary buffer + */ +static void fill_midi1_pending_buf(struct f_midi2 *midi2, u8 cable, u8 *buf, + unsigned int size) +{ + struct f_midi2_midi1_port *port = &midi2->midi1_port[cable]; + + if (port->pending + size > sizeof(port->buf)) + return; + memcpy(port->buf + port->pending, buf, size); + port->pending += size; +} + +/* try to process data given from the associated UMP stream */ +static void process_midi1_transmit(struct f_midi2 *midi2) +{ + struct f_midi2_usb_ep *usb_ep = &midi2->midi1_ep_in; + struct f_midi2_ep *ep = &midi2->midi2_eps[0]; + struct usb_request *req = NULL; + /* 12 is the largest outcome (4 MIDI1 cmds) for a single UMP packet */ + unsigned char outbuf[12]; + unsigned char group, cable; + int len, size; + u32 ump; + + if (!usb_ep->usb_ep || !usb_ep->usb_ep->enabled) + return; + + for (;;) { + if (!req) { + req = get_empty_request(usb_ep); + if (!req) + break; + } + + if (process_midi1_pending_buf(midi2, &req)) + continue; + + len = snd_ump_transmit(ep->ump, &ump, 4); + if (len <= 0) + break; + if (snd_ump_receive_ump_val(ep->ump, ump) <= 0) + continue; + size = snd_ump_convert_from_ump(ep->ump->input_buf, outbuf, + &group); + if (size <= 0) + continue; + cable = ep->in_group_to_cable[group]; + if (!cable) + continue; + cable--; /* to 0-base */ + fill_midi1_pending_buf(midi2, cable, outbuf, size); + } + + if (req) { + if (req->length) + queue_request_ep_raw(req); + else + put_empty_request(req); + } +} + +/* complete handler for MIDI1 EP-in requests */ +static void f_midi2_midi1_ep_in_complete(struct usb_ep *usb_ep, + struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + struct f_midi2 *midi2 = ctx->usb_ep->card; + int status = req->status; + + put_empty_request(req); + + if (status) { + DBG(midi2, "%s complete error %d: %d/%d\n", + usb_ep->name, status, req->actual, req->length); + return; + } + + process_midi1_transmit(midi2); +} + +/* complete handler for MIDI1 EP-out requests */ +static void f_midi2_midi1_ep_out_complete(struct usb_ep *usb_ep, + struct usb_request *req) +{ + struct f_midi2_req_ctx *ctx = req->context; + struct f_midi2 *midi2 = ctx->usb_ep->card; + struct f_midi2_ep *ep; + struct ump_cvt_to_ump *cvt = &midi2->midi1_ump_cvt; + static const u8 midi1_packet_bytes[16] = { + 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 + }; + unsigned int group, cable, bytes, c, len; + int status = req->status; + const u8 *buf = req->buf; + + if (status) { + DBG(midi2, "%s complete error %d: %d/%d\n", + usb_ep->name, status, req->actual, req->length); + goto error; + } + + len = req->actual >> 2; + for (; len; len--, buf += 4) { + cable = *buf >> 4; + ep = midi2->out_cable_mapping[cable].ep; + if (!ep) + continue; + group = midi2->out_cable_mapping[cable].group; + bytes = midi1_packet_bytes[*buf & 0x0f]; + for (c = 0; c < bytes; c++) { + snd_ump_convert_to_ump(cvt, group, + to_ump_protocol(ep->info.protocol), + buf[c + 1]); + if (cvt->ump_bytes) { + snd_ump_receive(ep->ump, cvt->ump, + cvt->ump_bytes); + cvt->ump_bytes = 0; + } + } + } + + if (midi2->operation_mode != MIDI_OP_MODE_MIDI1) + goto error; + + if (queue_request_ep_raw(req)) + goto error; + return; + + error: + put_empty_request(req); +} + +/* + * Common EP handling helpers + */ + +/* Start MIDI EP */ +static int f_midi2_start_ep(struct f_midi2_usb_ep *usb_ep, + struct usb_function *fn) +{ + int err; + + if (!usb_ep->usb_ep) + return 0; + + usb_ep_disable(usb_ep->usb_ep); + err = config_ep_by_speed(usb_ep->card->gadget, fn, usb_ep->usb_ep); + if (err) + return err; + return usb_ep_enable(usb_ep->usb_ep); +} + +/* Drop pending requests */ +static void f_midi2_drop_reqs(struct f_midi2_usb_ep *usb_ep) +{ + int i; + + if (!usb_ep->usb_ep || !usb_ep->num_reqs) + return; + + for (i = 0; i < usb_ep->num_reqs; i++) { + if (!test_bit(i, &usb_ep->free_reqs) && usb_ep->reqs[i].req) { + usb_ep_dequeue(usb_ep->usb_ep, usb_ep->reqs[i].req); + set_bit(i, &usb_ep->free_reqs); + } + } +} + +/* Allocate requests for the given EP */ +static int f_midi2_alloc_ep_reqs(struct f_midi2_usb_ep *usb_ep) +{ + struct f_midi2 *midi2 = usb_ep->card; + int i; + + if (!usb_ep->usb_ep) + return 0; + if (!usb_ep->reqs) + return -EINVAL; + + for (i = 0; i < midi2->info.num_reqs; i++) { + if (usb_ep->reqs[i].req) + continue; + usb_ep->reqs[i].req = alloc_ep_req(usb_ep->usb_ep, + midi2->info.req_buf_size); + if (!usb_ep->reqs[i].req) + return -ENOMEM; + usb_ep->reqs[i].req->context = &usb_ep->reqs[i]; + } + return 0; +} + +/* Free allocated requests */ +static void f_midi2_free_ep_reqs(struct f_midi2_usb_ep *usb_ep) +{ + struct f_midi2 *midi2 = usb_ep->card; + int i; + + for (i = 0; i < midi2->info.num_reqs; i++) { + if (!usb_ep->reqs[i].req) + continue; + free_ep_req(usb_ep->usb_ep, usb_ep->reqs[i].req); + usb_ep->reqs[i].req = NULL; + } +} + +/* Initialize EP */ +static int f_midi2_init_ep(struct f_midi2 *midi2, struct f_midi2_ep *ep, + struct f_midi2_usb_ep *usb_ep, + void *desc, + void (*complete)(struct usb_ep *usb_ep, + struct usb_request *req)) +{ + int i; + + usb_ep->card = midi2; + usb_ep->ep = ep; + usb_ep->usb_ep = usb_ep_autoconfig(midi2->gadget, desc); + if (!usb_ep->usb_ep) + return -ENODEV; + usb_ep->complete = complete; + + usb_ep->reqs = kcalloc(midi2->info.num_reqs, sizeof(*usb_ep->reqs), + GFP_KERNEL); + if (!usb_ep->reqs) + return -ENOMEM; + for (i = 0; i < midi2->info.num_reqs; i++) { + usb_ep->reqs[i].index = i; + usb_ep->reqs[i].usb_ep = usb_ep; + set_bit(i, &usb_ep->free_reqs); + usb_ep->num_reqs++; + } + + return 0; +} + +/* Free EP */ +static void f_midi2_free_ep(struct f_midi2_usb_ep *usb_ep) +{ + f_midi2_drop_reqs(usb_ep); + + f_midi2_free_ep_reqs(usb_ep); + + kfree(usb_ep->reqs); + usb_ep->num_reqs = 0; + usb_ep->free_reqs = 0; + usb_ep->reqs = NULL; +} + +/* Queue requests for EP-out at start */ +static void f_midi2_queue_out_reqs(struct f_midi2_usb_ep *usb_ep) +{ + int i, err; + + if (!usb_ep->usb_ep) + return; + + for (i = 0; i < usb_ep->num_reqs; i++) { + if (!test_bit(i, &usb_ep->free_reqs) || !usb_ep->reqs[i].req) + continue; + usb_ep->reqs[i].req->complete = usb_ep->complete; + err = usb_ep_queue(usb_ep->usb_ep, usb_ep->reqs[i].req, + GFP_ATOMIC); + if (!err) + clear_bit(i, &usb_ep->free_reqs); + } +} + +/* + * Gadget Function callbacks + */ + +/* stop both IN and OUT EPs */ +static void f_midi2_stop_eps(struct f_midi2_usb_ep *ep_in, + struct f_midi2_usb_ep *ep_out) +{ + f_midi2_drop_reqs(ep_in); + f_midi2_drop_reqs(ep_out); + f_midi2_free_ep_reqs(ep_in); + f_midi2_free_ep_reqs(ep_out); +} + +/* start/queue both IN and OUT EPs */ +static int f_midi2_start_eps(struct f_midi2_usb_ep *ep_in, + struct f_midi2_usb_ep *ep_out, + struct usb_function *fn) +{ + int err; + + err = f_midi2_start_ep(ep_in, fn); + if (err) + return err; + err = f_midi2_start_ep(ep_out, fn); + if (err) + return err; + + err = f_midi2_alloc_ep_reqs(ep_in); + if (err) + return err; + err = f_midi2_alloc_ep_reqs(ep_out); + if (err) + return err; + + f_midi2_queue_out_reqs(ep_out); + return 0; +} + +/* gadget function set_alt callback */ +static int f_midi2_set_alt(struct usb_function *fn, unsigned int intf, + unsigned int alt) +{ + struct f_midi2 *midi2 = func_to_midi2(fn); + struct f_midi2_ep *ep; + int i, op_mode, err; + + if (intf != midi2->midi_if || alt > 1) + return 0; + + if (alt == 0) + op_mode = MIDI_OP_MODE_MIDI1; + else + op_mode = MIDI_OP_MODE_MIDI2; + + if (midi2->operation_mode == op_mode) + return 0; + + midi2->operation_mode = op_mode; + + if (op_mode != MIDI_OP_MODE_MIDI1) + f_midi2_stop_eps(&midi2->midi1_ep_in, &midi2->midi1_ep_out); + + if (op_mode != MIDI_OP_MODE_MIDI2) { + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + f_midi2_stop_eps(&ep->ep_in, &ep->ep_out); + } + } + + if (op_mode == MIDI_OP_MODE_MIDI1) + return f_midi2_start_eps(&midi2->midi1_ep_in, + &midi2->midi1_ep_out, fn); + + if (op_mode == MIDI_OP_MODE_MIDI2) { + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + + err = f_midi2_start_eps(&ep->ep_in, &ep->ep_out, fn); + if (err) + return err; + } + } + + return 0; +} + +/* gadget function get_alt callback */ +static int f_midi2_get_alt(struct usb_function *fn, unsigned int intf) +{ + struct f_midi2 *midi2 = func_to_midi2(fn); + + if (intf == midi2->midi_if && + midi2->operation_mode == MIDI_OP_MODE_MIDI2) + return 1; + return 0; +} + +/* convert UMP direction to USB MIDI 2.0 direction */ +static unsigned int ump_to_usb_dir(unsigned int ump_dir) +{ + switch (ump_dir) { + case SNDRV_UMP_DIR_INPUT: + return USB_MS_GR_TRM_BLOCK_TYPE_INPUT_ONLY; + case SNDRV_UMP_DIR_OUTPUT: + return USB_MS_GR_TRM_BLOCK_TYPE_OUTPUT_ONLY; + default: + return USB_MS_GR_TRM_BLOCK_TYPE_BIDIRECTIONAL; + } +} + +/* assign GTB descriptors (for the given request) */ +static void assign_block_descriptors(struct f_midi2 *midi2, + struct usb_request *req, + int max_len) +{ + struct usb_ms20_gr_trm_block_header_descriptor header; + struct usb_ms20_gr_trm_block_descriptor *desc; + struct f_midi2_block_info *b; + struct f_midi2_ep *ep; + int i, blk, len; + char *data; + + len = sizeof(gtb_header_desc) + sizeof(gtb_desc) * midi2->total_blocks; + if (WARN_ON(len > midi2->info.req_buf_size)) + return; + + header = gtb_header_desc; + header.wTotalLength = cpu_to_le16(len); + if (max_len < len) { + len = min_t(int, len, sizeof(header)); + memcpy(req->buf, &header, len); + req->length = len; + req->zero = len < max_len; + return; + } + + memcpy(req->buf, &header, sizeof(header)); + data = req->buf + sizeof(header); + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + for (blk = 0; blk < ep->num_blks; blk++) { + b = &ep->blks[blk].info; + desc = (struct usb_ms20_gr_trm_block_descriptor *)data; + + *desc = gtb_desc; + desc->bGrpTrmBlkID = ep->blks[blk].gtb_id; + desc->bGrpTrmBlkType = ump_to_usb_dir(b->direction); + desc->nGroupTrm = b->first_group; + desc->nNumGroupTrm = b->num_groups; + desc->iBlockItem = ep->blks[blk].string_id; + + if (ep->info.protocol == 2) + desc->bMIDIProtocol = USB_MS_MIDI_PROTO_2_0; + else + desc->bMIDIProtocol = USB_MS_MIDI_PROTO_1_0_128; + + if (b->is_midi1 == 2) { + desc->wMaxInputBandwidth = cpu_to_le16(1); + desc->wMaxOutputBandwidth = cpu_to_le16(1); + } + + data += sizeof(*desc); + } + } + + req->length = len; + req->zero = len < max_len; +} + +/* gadget function setup callback: handle GTB requests */ +static int f_midi2_setup(struct usb_function *fn, + const struct usb_ctrlrequest *ctrl) +{ + struct f_midi2 *midi2 = func_to_midi2(fn); + struct usb_composite_dev *cdev = fn->config->cdev; + struct usb_request *req = cdev->req; + u16 value, length; + + if ((ctrl->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD || + ctrl->bRequest != USB_REQ_GET_DESCRIPTOR) + return -EOPNOTSUPP; + + value = le16_to_cpu(ctrl->wValue); + length = le16_to_cpu(ctrl->wLength); + + if ((value >> 8) != USB_DT_CS_GR_TRM_BLOCK) + return -EOPNOTSUPP; + + /* handle only altset 1 */ + if ((value & 0xff) != 1) + return -EOPNOTSUPP; + + assign_block_descriptors(midi2, req, length); + return usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); +} + +/* gadget function disable callback */ +static void f_midi2_disable(struct usb_function *fn) +{ + struct f_midi2 *midi2 = func_to_midi2(fn); + + midi2->operation_mode = MIDI_OP_MODE_UNSET; +} + +/* + * ALSA UMP ops: most of them are NOPs, only trigger for write is needed + */ +static int f_midi2_ump_open(struct snd_ump_endpoint *ump, int dir) +{ + return 0; +} + +static void f_midi2_ump_close(struct snd_ump_endpoint *ump, int dir) +{ +} + +static void f_midi2_ump_trigger(struct snd_ump_endpoint *ump, int dir, int up) +{ + struct f_midi2_ep *ep = ump->private_data; + struct f_midi2 *midi2 = ep->card; + + if (up && dir == SNDRV_RAWMIDI_STREAM_OUTPUT) { + switch (midi2->operation_mode) { + case MIDI_OP_MODE_MIDI1: + process_midi1_transmit(midi2); + break; + case MIDI_OP_MODE_MIDI2: + process_ump_transmit(ep); + break; + } + } +} + +static void f_midi2_ump_drain(struct snd_ump_endpoint *ump, int dir) +{ +} + +static const struct snd_ump_ops f_midi2_ump_ops = { + .open = f_midi2_ump_open, + .close = f_midi2_ump_close, + .trigger = f_midi2_ump_trigger, + .drain = f_midi2_ump_drain, +}; + +/* + * "Operation Mode" control element + */ +static int f_midi2_operation_mode_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = MIDI_OP_MODE_UNSET; + uinfo->value.integer.max = MIDI_OP_MODE_MIDI2; + return 0; +} + +static int f_midi2_operation_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct f_midi2 *midi2 = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = midi2->operation_mode; + return 0; +} + +static const struct snd_kcontrol_new operation_mode_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI, + .name = "Operation Mode", + .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, + .info = f_midi2_operation_mode_info, + .get = f_midi2_operation_mode_get, +}; + +/* + * ALSA UMP instance creation / deletion + */ +static void f_midi2_free_card(struct f_midi2 *midi2) +{ + if (midi2->card) { + snd_card_free_when_closed(midi2->card); + midi2->card = NULL; + } +} + +/* use a reverse direction for the gadget host */ +static int reverse_dir(int dir) +{ + if (!dir || dir == SNDRV_UMP_DIR_BIDIRECTION) + return dir; + return (dir == SNDRV_UMP_DIR_OUTPUT) ? + SNDRV_UMP_DIR_INPUT : SNDRV_UMP_DIR_OUTPUT; +} + +static int f_midi2_create_card(struct f_midi2 *midi2) +{ + struct snd_card *card; + struct snd_ump_endpoint *ump; + struct f_midi2_ep *ep; + int i, id, blk, err; + __be32 sw; + + err = snd_card_new(&midi2->gadget->dev, -1, NULL, THIS_MODULE, 0, + &card); + if (err < 0) + return err; + midi2->card = card; + + strcpy(card->driver, "f_midi2"); + strcpy(card->shortname, "MIDI 2.0 Gadget"); + strcpy(card->longname, "MIDI 2.0 Gadget"); + + id = 0; + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + err = snd_ump_endpoint_new(card, "MIDI 2.0 Gadget", id, + 1, 1, &ump); + if (err < 0) + goto error; + id++; + + ep->ump = ump; + ump->no_process_stream = true; + ump->private_data = ep; + ump->ops = &f_midi2_ump_ops; + if (midi2->info.static_block) + ump->info.flags |= SNDRV_UMP_EP_INFO_STATIC_BLOCKS; + ump->info.protocol_caps = (ep->info.protocol_caps & 3) << 8; + ump->info.protocol = to_ump_protocol(ep->info.protocol); + ump->info.version = 0x0101; + ump->info.family_id = ep->info.family; + ump->info.model_id = ep->info.model; + ump->info.manufacturer_id = ep->info.manufacturer & 0xffffff; + sw = cpu_to_be32(ep->info.sw_revision); + memcpy(ump->info.sw_revision, &sw, 4); + + strscpy(ump->info.name, ump_ep_name(ep), + sizeof(ump->info.name)); + strscpy(ump->info.product_id, ump_product_id(ep), + sizeof(ump->info.product_id)); + strscpy(ump->core.name, ump->info.name, sizeof(ump->core.name)); + + for (blk = 0; blk < ep->num_blks; blk++) { + const struct f_midi2_block_info *b = &ep->blks[blk].info; + struct snd_ump_block *fb; + + err = snd_ump_block_new(ump, blk, + reverse_dir(b->direction), + b->first_group, b->num_groups, + &ep->blks[blk].fb); + if (err < 0) + goto error; + fb = ep->blks[blk].fb; + fb->info.active = !!b->active; + fb->info.midi_ci_version = b->midi_ci_version; + fb->info.ui_hint = reverse_dir(b->ui_hint); + fb->info.sysex8_streams = b->sysex8_streams; + if (b->is_midi1 < 2) + fb->info.flags |= b->is_midi1; + else + fb->info.flags |= SNDRV_UMP_BLOCK_IS_MIDI1 | + SNDRV_UMP_BLOCK_IS_LOWSPEED; + strscpy(fb->info.name, ump_fb_name(b), + sizeof(fb->info.name)); + } + snd_ump_update_group_attrs(ump); + } + + for (i = 0; i < midi2->num_eps; i++) { + err = snd_ump_attach_legacy_rawmidi(midi2->midi2_eps[i].ump, + "Legacy MIDI", id); + if (err < 0) + goto error; + id++; + } + + err = snd_ctl_add(card, snd_ctl_new1(&operation_mode_ctl, midi2)); + if (err < 0) + goto error; + + err = snd_card_register(card); + if (err < 0) + goto error; + + return 0; + + error: + f_midi2_free_card(midi2); + return err; +} + +/* + * Creation of USB descriptors + */ +struct f_midi2_usb_config { + struct usb_descriptor_header **list; + unsigned int size; + unsigned int alloc; + + /* MIDI 1.0 jacks */ + unsigned char jack_in, jack_out, jack_id; + struct usb_midi_in_jack_descriptor jack_ins[MAX_CABLES]; + struct usb_midi_out_jack_descriptor_1 jack_outs[MAX_CABLES]; +}; + +static int append_config(struct f_midi2_usb_config *config, void *d) +{ + unsigned int size; + void *buf; + + if (config->size + 2 >= config->alloc) { + size = config->size + 16; + buf = krealloc(config->list, size * sizeof(void *), GFP_KERNEL); + if (!buf) + return -ENOMEM; + config->list = buf; + config->alloc = size; + } + + config->list[config->size] = d; + config->size++; + config->list[config->size] = NULL; + return 0; +} + +static int append_configs(struct f_midi2_usb_config *config, void **d) +{ + int err; + + for (; *d; d++) { + err = append_config(config, *d); + if (err) + return err; + } + return 0; +} + +static int append_midi1_in_jack(struct f_midi2 *midi2, + struct f_midi2_usb_config *config, + struct midi1_cable_mapping *map, + unsigned int type) +{ + struct usb_midi_in_jack_descriptor *jack = + &config->jack_ins[config->jack_in++]; + int id = ++config->jack_id; + int err; + + jack->bLength = 0x06; + jack->bDescriptorType = USB_DT_CS_INTERFACE; + jack->bDescriptorSubtype = USB_MS_MIDI_IN_JACK; + jack->bJackType = type; + jack->bJackID = id; + /* use the corresponding block name as jack name */ + if (map->ep) + jack->iJack = map->ep->blks[map->block].string_id; + + err = append_config(config, jack); + if (err < 0) + return err; + return id; +} + +static int append_midi1_out_jack(struct f_midi2 *midi2, + struct f_midi2_usb_config *config, + struct midi1_cable_mapping *map, + unsigned int type, unsigned int source) +{ + struct usb_midi_out_jack_descriptor_1 *jack = + &config->jack_outs[config->jack_out++]; + int id = ++config->jack_id; + int err; + + jack->bLength = 0x09; + jack->bDescriptorType = USB_DT_CS_INTERFACE; + jack->bDescriptorSubtype = USB_MS_MIDI_OUT_JACK; + jack->bJackType = type; + jack->bJackID = id; + jack->bNrInputPins = 1; + jack->pins[0].baSourceID = source; + jack->pins[0].baSourcePin = 0x01; + /* use the corresponding block name as jack name */ + if (map->ep) + jack->iJack = map->ep->blks[map->block].string_id; + + err = append_config(config, jack); + if (err < 0) + return err; + return id; +} + +static int f_midi2_create_usb_configs(struct f_midi2 *midi2, + struct f_midi2_usb_config *config, + int speed) +{ + void **midi1_in_eps, **midi1_out_eps; + int i, jack, total; + int err; + + switch (speed) { + default: + case USB_SPEED_HIGH: + midi2_midi1_ep_out_desc.wMaxPacketSize = cpu_to_le16(512); + midi2_midi1_ep_in_desc.wMaxPacketSize = cpu_to_le16(512); + for (i = 0; i < midi2->num_eps; i++) { + midi2_midi2_ep_out_desc[i].wMaxPacketSize = + cpu_to_le16(512); + midi2_midi2_ep_in_desc[i].wMaxPacketSize = + cpu_to_le16(512); + } + fallthrough; + case USB_SPEED_FULL: + midi1_in_eps = midi2_midi1_ep_in_descs; + midi1_out_eps = midi2_midi1_ep_out_descs; + break; + case USB_SPEED_SUPER: + midi2_midi1_ep_out_desc.wMaxPacketSize = cpu_to_le16(1024); + midi2_midi1_ep_in_desc.wMaxPacketSize = cpu_to_le16(1024); + for (i = 0; i < midi2->num_eps; i++) { + midi2_midi2_ep_out_desc[i].wMaxPacketSize = + cpu_to_le16(1024); + midi2_midi2_ep_in_desc[i].wMaxPacketSize = + cpu_to_le16(1024); + } + midi1_in_eps = midi2_midi1_ep_in_ss_descs; + midi1_out_eps = midi2_midi1_ep_out_ss_descs; + break; + } + + err = append_configs(config, midi2_audio_descs); + if (err < 0) + return err; + + if (midi2->num_midi1_in && midi2->num_midi1_out) + midi2_midi1_if_desc.bNumEndpoints = 2; + else + midi2_midi1_if_desc.bNumEndpoints = 1; + + err = append_configs(config, midi2_midi1_descs); + if (err < 0) + return err; + + total = USB_DT_MS_HEADER_SIZE; + if (midi2->num_midi1_out) { + midi2_midi1_ep_out_class_desc.bLength = + USB_DT_MS_ENDPOINT_SIZE(midi2->num_midi1_out); + total += midi2_midi1_ep_out_class_desc.bLength; + midi2_midi1_ep_out_class_desc.bNumEmbMIDIJack = + midi2->num_midi1_out; + total += midi2->num_midi1_out * + (USB_DT_MIDI_IN_SIZE + USB_DT_MIDI_OUT_SIZE(1)); + for (i = 0; i < midi2->num_midi1_out; i++) { + jack = append_midi1_in_jack(midi2, config, + &midi2->in_cable_mapping[i], + USB_MS_EMBEDDED); + if (jack < 0) + return jack; + midi2_midi1_ep_out_class_desc.baAssocJackID[i] = jack; + jack = append_midi1_out_jack(midi2, config, + &midi2->in_cable_mapping[i], + USB_MS_EXTERNAL, jack); + if (jack < 0) + return jack; + } + } + + if (midi2->num_midi1_in) { + midi2_midi1_ep_in_class_desc.bLength = + USB_DT_MS_ENDPOINT_SIZE(midi2->num_midi1_in); + total += midi2_midi1_ep_in_class_desc.bLength; + midi2_midi1_ep_in_class_desc.bNumEmbMIDIJack = + midi2->num_midi1_in; + total += midi2->num_midi1_in * + (USB_DT_MIDI_IN_SIZE + USB_DT_MIDI_OUT_SIZE(1)); + for (i = 0; i < midi2->num_midi1_in; i++) { + jack = append_midi1_in_jack(midi2, config, + &midi2->out_cable_mapping[i], + USB_MS_EXTERNAL); + if (jack < 0) + return jack; + jack = append_midi1_out_jack(midi2, config, + &midi2->out_cable_mapping[i], + USB_MS_EMBEDDED, jack); + if (jack < 0) + return jack; + midi2_midi1_ep_in_class_desc.baAssocJackID[i] = jack; + } + } + + midi2_midi1_class_desc.wTotalLength = cpu_to_le16(total); + + if (midi2->num_midi1_out) { + err = append_configs(config, midi1_out_eps); + if (err < 0) + return err; + } + if (midi2->num_midi1_in) { + err = append_configs(config, midi1_in_eps); + if (err < 0) + return err; + } + + err = append_configs(config, midi2_midi2_descs); + if (err < 0) + return err; + + for (i = 0; i < midi2->num_eps; i++) { + err = append_config(config, &midi2_midi2_ep_out_desc[i]); + if (err < 0) + return err; + if (speed == USB_SPEED_SUPER || speed == USB_SPEED_SUPER_PLUS) { + err = append_config(config, &midi2_midi2_ep_out_ss_comp_desc); + if (err < 0) + return err; + } + err = append_config(config, &midi2_midi2_ep_out_class_desc[i]); + if (err < 0) + return err; + err = append_config(config, &midi2_midi2_ep_in_desc[i]); + if (err < 0) + return err; + if (speed == USB_SPEED_SUPER || speed == USB_SPEED_SUPER_PLUS) { + err = append_config(config, &midi2_midi2_ep_in_ss_comp_desc); + if (err < 0) + return err; + } + err = append_config(config, &midi2_midi2_ep_in_class_desc[i]); + if (err < 0) + return err; + } + + return 0; +} + +static void f_midi2_free_usb_configs(struct f_midi2_usb_config *config) +{ + kfree(config->list); + memset(config, 0, sizeof(*config)); +} + +/* as we use the static descriptors for simplicity, serialize bind call */ +static DEFINE_MUTEX(f_midi2_desc_mutex); + +/* fill MIDI2 EP class-specific descriptor */ +static void fill_midi2_class_desc(struct f_midi2_ep *ep, + struct usb_ms20_endpoint_descriptor_32 *cdesc) +{ + int blk; + + cdesc->bLength = USB_DT_MS20_ENDPOINT_SIZE(ep->num_blks); + cdesc->bDescriptorType = USB_DT_CS_ENDPOINT; + cdesc->bDescriptorSubtype = USB_MS_GENERAL_2_0; + cdesc->bNumGrpTrmBlock = ep->num_blks; + for (blk = 0; blk < ep->num_blks; blk++) + cdesc->baAssoGrpTrmBlkID[blk] = ep->blks[blk].gtb_id; +} + +/* initialize MIDI2 EP-in */ +static int f_midi2_init_midi2_ep_in(struct f_midi2 *midi2, int index) +{ + struct f_midi2_ep *ep = &midi2->midi2_eps[index]; + struct usb_endpoint_descriptor *desc = &midi2_midi2_ep_in_desc[index]; + + desc->bLength = USB_DT_ENDPOINT_SIZE; + desc->bDescriptorType = USB_DT_ENDPOINT; + desc->bEndpointAddress = USB_DIR_IN; + desc->bmAttributes = USB_ENDPOINT_XFER_INT; + desc->wMaxPacketSize = cpu_to_le16(EP_MAX_PACKET_INT); + desc->bInterval = 1; + + fill_midi2_class_desc(ep, &midi2_midi2_ep_in_class_desc[index]); + + return f_midi2_init_ep(midi2, ep, &ep->ep_in, desc, + f_midi2_ep_in_complete); +} + +/* initialize MIDI2 EP-out */ +static int f_midi2_init_midi2_ep_out(struct f_midi2 *midi2, int index) +{ + struct f_midi2_ep *ep = &midi2->midi2_eps[index]; + struct usb_endpoint_descriptor *desc = &midi2_midi2_ep_out_desc[index]; + + desc->bLength = USB_DT_ENDPOINT_SIZE; + desc->bDescriptorType = USB_DT_ENDPOINT; + desc->bEndpointAddress = USB_DIR_OUT; + desc->bmAttributes = USB_ENDPOINT_XFER_BULK; + + fill_midi2_class_desc(ep, &midi2_midi2_ep_out_class_desc[index]); + + return f_midi2_init_ep(midi2, ep, &ep->ep_out, desc, + f_midi2_ep_out_complete); +} + +/* gadget function bind callback */ +static int f_midi2_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_midi2 *midi2 = func_to_midi2(f); + struct f_midi2_ep *ep; + struct f_midi2_usb_config config = {}; + struct usb_gadget_strings string_fn = { + .language = 0x0409, /* en-us */ + .strings = midi2->string_defs, + }; + struct usb_gadget_strings *strings[] = { + &string_fn, + NULL, + }; + int i, blk, status; + + midi2->gadget = cdev->gadget; + midi2->operation_mode = MIDI_OP_MODE_UNSET; + + status = f_midi2_create_card(midi2); + if (status < 0) + goto fail_register; + + /* maybe allocate device-global string ID */ + midi2->strings = usb_gstrings_attach(c->cdev, strings, + midi2->total_blocks + 1); + if (IS_ERR(midi2->strings)) { + status = PTR_ERR(midi2->strings); + goto fail_string; + } + + mutex_lock(&f_midi2_desc_mutex); + midi2_midi1_if_desc.iInterface = midi2->strings[STR_IFACE].id; + midi2_midi2_if_desc.iInterface = midi2->strings[STR_IFACE].id; + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + for (blk = 0; blk < ep->num_blks; blk++) + ep->blks[blk].string_id = + midi2->strings[gtb_to_str_id(ep->blks[blk].gtb_id)].id; + } + + midi2_midi2_if_desc.bNumEndpoints = midi2->num_eps * 2; + + /* audio interface */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + midi2_audio_if_desc.bInterfaceNumber = status; + + /* MIDI streaming */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + midi2->midi_if = status; + midi2_midi1_if_desc.bInterfaceNumber = status; + midi2_midi2_if_desc.bInterfaceNumber = status; + midi2_audio_class_desc.baInterfaceNr[0] = status; + + /* allocate instance-specific endpoints */ + if (midi2->midi2_eps[0].blks[0].info.direction != SNDRV_UMP_DIR_OUTPUT) { + status = f_midi2_init_ep(midi2, NULL, &midi2->midi1_ep_in, + &midi2_midi1_ep_in_desc, + f_midi2_midi1_ep_in_complete); + if (status) + goto fail; + } + + if (midi2->midi2_eps[0].blks[0].info.direction != SNDRV_UMP_DIR_INPUT) { + status = f_midi2_init_ep(midi2, NULL, &midi2->midi1_ep_out, + &midi2_midi1_ep_out_desc, + f_midi2_midi1_ep_out_complete); + if (status) + goto fail; + } + + for (i = 0; i < midi2->num_eps; i++) { + status = f_midi2_init_midi2_ep_in(midi2, i); + if (status) + goto fail; + status = f_midi2_init_midi2_ep_out(midi2, i); + if (status) + goto fail; + } + + status = f_midi2_create_usb_configs(midi2, &config, USB_SPEED_FULL); + if (status < 0) + goto fail; + f->fs_descriptors = usb_copy_descriptors(config.list); + if (!f->fs_descriptors) { + status = -ENOMEM; + goto fail; + } + f_midi2_free_usb_configs(&config); + + status = f_midi2_create_usb_configs(midi2, &config, USB_SPEED_HIGH); + if (status < 0) + goto fail; + f->hs_descriptors = usb_copy_descriptors(config.list); + if (!f->hs_descriptors) { + status = -ENOMEM; + goto fail; + } + f_midi2_free_usb_configs(&config); + + status = f_midi2_create_usb_configs(midi2, &config, USB_SPEED_SUPER); + if (status < 0) + goto fail; + f->ss_descriptors = usb_copy_descriptors(config.list); + if (!f->ss_descriptors) { + status = -ENOMEM; + goto fail; + } + f_midi2_free_usb_configs(&config); + + mutex_unlock(&f_midi2_desc_mutex); + return 0; + +fail: + f_midi2_free_usb_configs(&config); + mutex_unlock(&f_midi2_desc_mutex); + usb_free_all_descriptors(f); +fail_string: + f_midi2_free_card(midi2); +fail_register: + ERROR(midi2, "%s: can't bind, err %d\n", f->name, status); + return status; +} + +/* gadget function unbind callback */ +static void f_midi2_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_midi2 *midi2 = func_to_midi2(f); + int i; + + f_midi2_free_card(midi2); + + f_midi2_free_ep(&midi2->midi1_ep_in); + f_midi2_free_ep(&midi2->midi1_ep_out); + for (i = 0; i < midi2->num_eps; i++) { + f_midi2_free_ep(&midi2->midi2_eps[i].ep_in); + f_midi2_free_ep(&midi2->midi2_eps[i].ep_out); + } + + usb_free_all_descriptors(f); +} + +/* + * ConfigFS interface + */ + +/* type conversion helpers */ +static inline struct f_midi2_opts *to_f_midi2_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_midi2_opts, + func_inst.group); +} + +static inline struct f_midi2_ep_opts * +to_f_midi2_ep_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_midi2_ep_opts, + group); +} + +static inline struct f_midi2_block_opts * +to_f_midi2_block_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_midi2_block_opts, + group); +} + +/* trim the string to be usable for EP and FB name strings */ +static void make_name_string(char *s) +{ + char *p; + + p = strchr(s, '\n'); + if (p) + *p = 0; + + p = s + strlen(s); + for (; p > s && isspace(*p); p--) + *p = 0; +} + +/* configfs helpers: generic show/store for unisnged int */ +static ssize_t f_midi2_opts_uint_show(struct f_midi2_opts *opts, + u32 val, const char *format, char *page) +{ + int result; + + mutex_lock(&opts->lock); + result = sprintf(page, format, val); + mutex_unlock(&opts->lock); + return result; +} + +static ssize_t f_midi2_opts_uint_store(struct f_midi2_opts *opts, + u32 *valp, u32 minval, u32 maxval, + const char *page, size_t len) +{ + int ret; + u32 val; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtou32(page, 0, &val); + if (ret) + goto end; + if (val < minval || val > maxval) { + ret = -EINVAL; + goto end; + } + + *valp = val; + ret = len; + +end: + mutex_unlock(&opts->lock); + return ret; +} + +/* generic store for bool */ +static ssize_t f_midi2_opts_bool_store(struct f_midi2_opts *opts, + bool *valp, const char *page, size_t len) +{ + int ret; + bool val; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + ret = kstrtobool(page, &val); + if (ret) + goto end; + *valp = val; + ret = len; + +end: + mutex_unlock(&opts->lock); + return ret; +} + +/* generic show/store for string */ +static ssize_t f_midi2_opts_str_show(struct f_midi2_opts *opts, + const char *str, char *page) +{ + int result = 0; + + mutex_lock(&opts->lock); + if (str) + result = scnprintf(page, PAGE_SIZE, "%s\n", str); + mutex_unlock(&opts->lock); + return result; +} + +static ssize_t f_midi2_opts_str_store(struct f_midi2_opts *opts, + const char **strp, size_t maxlen, + const char *page, size_t len) +{ + char *c; + int ret; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto end; + } + + c = kstrndup(page, min(len, maxlen), GFP_KERNEL); + if (!c) { + ret = -ENOMEM; + goto end; + } + + kfree(*strp); + make_name_string(c); + *strp = c; + ret = len; + +end: + mutex_unlock(&opts->lock); + return ret; +} + +/* + * Definitions for UMP Block config + */ + +/* define an uint option for block */ +#define F_MIDI2_BLOCK_OPT(name, format, minval, maxval) \ +static ssize_t f_midi2_block_opts_##name##_show(struct config_item *item,\ + char *page) \ +{ \ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \ + return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name, \ + format "\n", page); \ +} \ + \ +static ssize_t f_midi2_block_opts_##name##_store(struct config_item *item,\ + const char *page, size_t len) \ +{ \ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \ + return f_midi2_opts_uint_store(opts->ep->opts, &opts->info.name,\ + minval, maxval, page, len); \ +} \ + \ +CONFIGFS_ATTR(f_midi2_block_opts_, name) + +/* define a boolean option for block */ +#define F_MIDI2_BLOCK_BOOL_OPT(name) \ +static ssize_t f_midi2_block_opts_##name##_show(struct config_item *item,\ + char *page) \ +{ \ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \ + return f_midi2_opts_uint_show(opts->ep->opts, opts->info.name, \ + "%u\n", page); \ +} \ + \ +static ssize_t f_midi2_block_opts_##name##_store(struct config_item *item,\ + const char *page, size_t len) \ +{ \ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); \ + return f_midi2_opts_bool_store(opts->ep->opts, &opts->info.name,\ + page, len); \ +} \ + \ +CONFIGFS_ATTR(f_midi2_block_opts_, name) + +F_MIDI2_BLOCK_OPT(direction, "0x%x", 1, 3); +F_MIDI2_BLOCK_OPT(first_group, "0x%x", 0, 15); +F_MIDI2_BLOCK_OPT(num_groups, "0x%x", 1, 16); +F_MIDI2_BLOCK_OPT(midi1_first_group, "0x%x", 0, 15); +F_MIDI2_BLOCK_OPT(midi1_num_groups, "0x%x", 0, 16); +F_MIDI2_BLOCK_OPT(ui_hint, "0x%x", 0, 3); +F_MIDI2_BLOCK_OPT(midi_ci_version, "%u", 0, 1); +F_MIDI2_BLOCK_OPT(sysex8_streams, "%u", 0, 255); +F_MIDI2_BLOCK_OPT(is_midi1, "%u", 0, 2); +F_MIDI2_BLOCK_BOOL_OPT(active); + +static ssize_t f_midi2_block_opts_name_show(struct config_item *item, + char *page) +{ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); + + return f_midi2_opts_str_show(opts->ep->opts, opts->info.name, page); +} + +static ssize_t f_midi2_block_opts_name_store(struct config_item *item, + const char *page, size_t len) +{ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); + + return f_midi2_opts_str_store(opts->ep->opts, &opts->info.name, 128, + page, len); +} + +CONFIGFS_ATTR(f_midi2_block_opts_, name); + +static struct configfs_attribute *f_midi2_block_attrs[] = { + &f_midi2_block_opts_attr_direction, + &f_midi2_block_opts_attr_first_group, + &f_midi2_block_opts_attr_num_groups, + &f_midi2_block_opts_attr_midi1_first_group, + &f_midi2_block_opts_attr_midi1_num_groups, + &f_midi2_block_opts_attr_ui_hint, + &f_midi2_block_opts_attr_midi_ci_version, + &f_midi2_block_opts_attr_sysex8_streams, + &f_midi2_block_opts_attr_is_midi1, + &f_midi2_block_opts_attr_active, + &f_midi2_block_opts_attr_name, + NULL, +}; + +static void f_midi2_block_opts_release(struct config_item *item) +{ + struct f_midi2_block_opts *opts = to_f_midi2_block_opts(item); + + kfree(opts->info.name); + kfree(opts); +} + +static struct configfs_item_operations f_midi2_block_item_ops = { + .release = f_midi2_block_opts_release, +}; + +static const struct config_item_type f_midi2_block_type = { + .ct_item_ops = &f_midi2_block_item_ops, + .ct_attrs = f_midi2_block_attrs, + .ct_owner = THIS_MODULE, +}; + +/* create a f_midi2_block_opts instance for the given block number */ +static int f_midi2_block_opts_create(struct f_midi2_ep_opts *ep_opts, + unsigned int blk, + struct f_midi2_block_opts **block_p) +{ + struct f_midi2_block_opts *block_opts; + int ret = 0; + + mutex_lock(&ep_opts->opts->lock); + if (ep_opts->opts->refcnt || ep_opts->blks[blk]) { + ret = -EBUSY; + goto out; + } + + block_opts = kzalloc(sizeof(*block_opts), GFP_KERNEL); + if (!block_opts) { + ret = -ENOMEM; + goto out; + } + + block_opts->ep = ep_opts; + block_opts->id = blk; + + /* set up the default values */ + block_opts->info.direction = SNDRV_UMP_DIR_BIDIRECTION; + block_opts->info.first_group = 0; + block_opts->info.num_groups = 1; + block_opts->info.ui_hint = SNDRV_UMP_BLOCK_UI_HINT_BOTH; + block_opts->info.active = 1; + + ep_opts->blks[blk] = block_opts; + *block_p = block_opts; + + out: + mutex_unlock(&ep_opts->opts->lock); + return ret; +} + +/* make_group callback for a block */ +static struct config_group * +f_midi2_opts_block_make(struct config_group *group, const char *name) +{ + struct f_midi2_ep_opts *ep_opts; + struct f_midi2_block_opts *block_opts; + unsigned int blk; + int ret; + + if (strncmp(name, "block.", 6)) + return ERR_PTR(-EINVAL); + ret = kstrtouint(name + 6, 10, &blk); + if (ret) + return ERR_PTR(ret); + + ep_opts = to_f_midi2_ep_opts(&group->cg_item); + + if (blk >= SNDRV_UMP_MAX_BLOCKS) + return ERR_PTR(-EINVAL); + if (ep_opts->blks[blk]) + return ERR_PTR(-EBUSY); + ret = f_midi2_block_opts_create(ep_opts, blk, &block_opts); + if (ret) + return ERR_PTR(ret); + + config_group_init_type_name(&block_opts->group, name, + &f_midi2_block_type); + return &block_opts->group; +} + +/* drop_item callback for a block */ +static void +f_midi2_opts_block_drop(struct config_group *group, struct config_item *item) +{ + struct f_midi2_block_opts *block_opts = to_f_midi2_block_opts(item); + + mutex_lock(&block_opts->ep->opts->lock); + block_opts->ep->blks[block_opts->id] = NULL; + mutex_unlock(&block_opts->ep->opts->lock); + config_item_put(item); +} + +/* + * Definitions for UMP Endpoint config + */ + +/* define an uint option for EP */ +#define F_MIDI2_EP_OPT(name, format, minval, maxval) \ +static ssize_t f_midi2_ep_opts_##name##_show(struct config_item *item, \ + char *page) \ +{ \ + struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \ + return f_midi2_opts_uint_show(opts->opts, opts->info.name, \ + format "\n", page); \ +} \ + \ +static ssize_t f_midi2_ep_opts_##name##_store(struct config_item *item, \ + const char *page, size_t len)\ +{ \ + struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \ + return f_midi2_opts_uint_store(opts->opts, &opts->info.name, \ + minval, maxval, page, len); \ +} \ + \ +CONFIGFS_ATTR(f_midi2_ep_opts_, name) + +/* define a string option for EP */ +#define F_MIDI2_EP_STR_OPT(name, maxlen) \ +static ssize_t f_midi2_ep_opts_##name##_show(struct config_item *item, \ + char *page) \ +{ \ + struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \ + return f_midi2_opts_str_show(opts->opts, opts->info.name, page);\ +} \ + \ +static ssize_t f_midi2_ep_opts_##name##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); \ + return f_midi2_opts_str_store(opts->opts, &opts->info.name, maxlen,\ + page, len); \ +} \ + \ +CONFIGFS_ATTR(f_midi2_ep_opts_, name) + +F_MIDI2_EP_OPT(protocol, "0x%x", 1, 2); +F_MIDI2_EP_OPT(protocol_caps, "0x%x", 1, 3); +F_MIDI2_EP_OPT(manufacturer, "0x%x", 0, 0xffffff); +F_MIDI2_EP_OPT(family, "0x%x", 0, 0xffff); +F_MIDI2_EP_OPT(model, "0x%x", 0, 0xffff); +F_MIDI2_EP_OPT(sw_revision, "0x%x", 0, 0xffffffff); +F_MIDI2_EP_STR_OPT(ep_name, 128); +F_MIDI2_EP_STR_OPT(product_id, 128); + +static struct configfs_attribute *f_midi2_ep_attrs[] = { + &f_midi2_ep_opts_attr_protocol, + &f_midi2_ep_opts_attr_protocol_caps, + &f_midi2_ep_opts_attr_ep_name, + &f_midi2_ep_opts_attr_product_id, + &f_midi2_ep_opts_attr_manufacturer, + &f_midi2_ep_opts_attr_family, + &f_midi2_ep_opts_attr_model, + &f_midi2_ep_opts_attr_sw_revision, + NULL, +}; + +static void f_midi2_ep_opts_release(struct config_item *item) +{ + struct f_midi2_ep_opts *opts = to_f_midi2_ep_opts(item); + + kfree(opts->info.ep_name); + kfree(opts->info.product_id); + kfree(opts); +} + +static struct configfs_item_operations f_midi2_ep_item_ops = { + .release = f_midi2_ep_opts_release, +}; + +static struct configfs_group_operations f_midi2_ep_group_ops = { + .make_group = f_midi2_opts_block_make, + .drop_item = f_midi2_opts_block_drop, +}; + +static const struct config_item_type f_midi2_ep_type = { + .ct_item_ops = &f_midi2_ep_item_ops, + .ct_group_ops = &f_midi2_ep_group_ops, + .ct_attrs = f_midi2_ep_attrs, + .ct_owner = THIS_MODULE, +}; + +/* create a f_midi2_ep_opts instance */ +static int f_midi2_ep_opts_create(struct f_midi2_opts *opts, + unsigned int index, + struct f_midi2_ep_opts **ep_p) +{ + struct f_midi2_ep_opts *ep_opts; + + ep_opts = kzalloc(sizeof(*ep_opts), GFP_KERNEL); + if (!ep_opts) + return -ENOMEM; + + ep_opts->opts = opts; + ep_opts->index = index; + + /* set up the default values */ + ep_opts->info.protocol = 2; + ep_opts->info.protocol_caps = 3; + + opts->eps[index] = ep_opts; + *ep_p = ep_opts; + return 0; +} + +/* make_group callback for an EP */ +static struct config_group * +f_midi2_opts_ep_make(struct config_group *group, const char *name) +{ + struct f_midi2_opts *opts; + struct f_midi2_ep_opts *ep_opts; + unsigned int index; + int ret; + + if (strncmp(name, "ep.", 3)) + return ERR_PTR(-EINVAL); + ret = kstrtouint(name + 3, 10, &index); + if (ret) + return ERR_PTR(ret); + + opts = to_f_midi2_opts(&group->cg_item); + if (index >= MAX_UMP_EPS) + return ERR_PTR(-EINVAL); + if (opts->eps[index]) + return ERR_PTR(-EBUSY); + ret = f_midi2_ep_opts_create(opts, index, &ep_opts); + if (ret) + return ERR_PTR(ret); + + config_group_init_type_name(&ep_opts->group, name, &f_midi2_ep_type); + return &ep_opts->group; +} + +/* drop_item callback for an EP */ +static void +f_midi2_opts_ep_drop(struct config_group *group, struct config_item *item) +{ + struct f_midi2_ep_opts *ep_opts = to_f_midi2_ep_opts(item); + + mutex_lock(&ep_opts->opts->lock); + ep_opts->opts->eps[ep_opts->index] = NULL; + mutex_unlock(&ep_opts->opts->lock); + config_item_put(item); +} + +/* + * Definitions for card config + */ + +/* define a bool option for card */ +#define F_MIDI2_BOOL_OPT(name) \ +static ssize_t f_midi2_opts_##name##_show(struct config_item *item, \ + char *page) \ +{ \ + struct f_midi2_opts *opts = to_f_midi2_opts(item); \ + return f_midi2_opts_uint_show(opts, opts->info.name, \ + "%u\n", page); \ +} \ + \ +static ssize_t f_midi2_opts_##name##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct f_midi2_opts *opts = to_f_midi2_opts(item); \ + return f_midi2_opts_bool_store(opts, &opts->info.name, \ + page, len); \ +} \ + \ +CONFIGFS_ATTR(f_midi2_opts_, name) + +F_MIDI2_BOOL_OPT(process_ump); +F_MIDI2_BOOL_OPT(static_block); + +static ssize_t f_midi2_opts_iface_name_show(struct config_item *item, + char *page) +{ + struct f_midi2_opts *opts = to_f_midi2_opts(item); + + return f_midi2_opts_str_show(opts, opts->info.iface_name, page); +} + +static ssize_t f_midi2_opts_iface_name_store(struct config_item *item, + const char *page, size_t len) +{ + struct f_midi2_opts *opts = to_f_midi2_opts(item); + + return f_midi2_opts_str_store(opts, &opts->info.iface_name, 128, + page, len); +} + +CONFIGFS_ATTR(f_midi2_opts_, iface_name); + +static struct configfs_attribute *f_midi2_attrs[] = { + &f_midi2_opts_attr_process_ump, + &f_midi2_opts_attr_static_block, + &f_midi2_opts_attr_iface_name, + NULL +}; + +static void f_midi2_opts_release(struct config_item *item) +{ + struct f_midi2_opts *opts = to_f_midi2_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations f_midi2_item_ops = { + .release = f_midi2_opts_release, +}; + +static struct configfs_group_operations f_midi2_group_ops = { + .make_group = f_midi2_opts_ep_make, + .drop_item = f_midi2_opts_ep_drop, +}; + +static const struct config_item_type f_midi2_func_type = { + .ct_item_ops = &f_midi2_item_ops, + .ct_group_ops = &f_midi2_group_ops, + .ct_attrs = f_midi2_attrs, + .ct_owner = THIS_MODULE, +}; + +static void f_midi2_free_inst(struct usb_function_instance *f) +{ + struct f_midi2_opts *opts; + + opts = container_of(f, struct f_midi2_opts, func_inst); + + kfree(opts->info.iface_name); + kfree(opts); +} + +/* gadget alloc_inst */ +static struct usb_function_instance *f_midi2_alloc_inst(void) +{ + struct f_midi2_opts *opts; + struct f_midi2_ep_opts *ep_opts; + struct f_midi2_block_opts *block_opts; + int ret; + + opts = kzalloc(sizeof(*opts), GFP_KERNEL); + if (!opts) + return ERR_PTR(-ENOMEM); + + mutex_init(&opts->lock); + opts->func_inst.free_func_inst = f_midi2_free_inst; + opts->info.process_ump = true; + opts->info.static_block = true; + opts->info.num_reqs = 32; + opts->info.req_buf_size = 512; + + /* create the default ep */ + ret = f_midi2_ep_opts_create(opts, 0, &ep_opts); + if (ret) { + kfree(opts); + return ERR_PTR(ret); + } + + /* create the default block */ + ret = f_midi2_block_opts_create(ep_opts, 0, &block_opts); + if (ret) { + kfree(ep_opts); + kfree(opts); + return ERR_PTR(ret); + } + + /* set up the default MIDI1 (that is mandatory) */ + block_opts->info.midi1_num_groups = 1; + + config_group_init_type_name(&opts->func_inst.group, "", + &f_midi2_func_type); + + config_group_init_type_name(&ep_opts->group, "ep.0", + &f_midi2_ep_type); + configfs_add_default_group(&ep_opts->group, &opts->func_inst.group); + + config_group_init_type_name(&block_opts->group, "block.0", + &f_midi2_block_type); + configfs_add_default_group(&block_opts->group, &ep_opts->group); + + return &opts->func_inst; +} + +static void do_f_midi2_free(struct f_midi2 *midi2, struct f_midi2_opts *opts) +{ + mutex_lock(&opts->lock); + --opts->refcnt; + mutex_unlock(&opts->lock); + kfree(midi2->string_defs); + kfree(midi2); +} + +static void f_midi2_free(struct usb_function *f) +{ + do_f_midi2_free(func_to_midi2(f), + container_of(f->fi, struct f_midi2_opts, func_inst)); +} + +/* verify the parameters set up via configfs; + * return the number of EPs or a negative error + */ +static int verify_parameters(struct f_midi2_opts *opts) +{ + int i, j, num_eps, num_blks; + struct f_midi2_ep_info *ep; + struct f_midi2_block_info *bp; + + for (num_eps = 0; num_eps < MAX_UMP_EPS && opts->eps[num_eps]; + num_eps++) + ; + if (!num_eps) { + pr_err("f_midi2: No EP is defined\n"); + return -EINVAL; + } + + num_blks = 0; + for (i = 0; i < num_eps; i++) { + ep = &opts->eps[i]->info; + if (!(ep->protocol_caps & ep->protocol)) { + pr_err("f_midi2: Invalid protocol 0x%x (caps 0x%x) for EP %d\n", + ep->protocol, ep->protocol_caps, i); + return -EINVAL; + } + + for (j = 0; j < SNDRV_UMP_MAX_BLOCKS && opts->eps[i]->blks[j]; + j++, num_blks++) { + bp = &opts->eps[i]->blks[j]->info; + if (bp->first_group + bp->num_groups > SNDRV_UMP_MAX_GROUPS) { + pr_err("f_midi2: Invalid group definitions for block %d:%d\n", + i, j); + return -EINVAL; + } + + if (bp->midi1_num_groups) { + if (bp->midi1_first_group < bp->first_group || + bp->midi1_first_group + bp->midi1_num_groups > + bp->first_group + bp->num_groups) { + pr_err("f_midi2: Invalid MIDI1 group definitions for block %d:%d\n", + i, j); + return -EINVAL; + } + } + } + } + if (!num_blks) { + pr_err("f_midi2: No block is defined\n"); + return -EINVAL; + } + + return num_eps; +} + +/* fill mapping between MIDI 1.0 cable and UMP EP/group */ +static void fill_midi1_cable_mapping(struct f_midi2 *midi2, + struct f_midi2_ep *ep, + int blk) +{ + const struct f_midi2_block_info *binfo = &ep->blks[blk].info; + struct midi1_cable_mapping *map; + int i, group; + + if (!binfo->midi1_num_groups) + return; + if (binfo->direction != SNDRV_UMP_DIR_OUTPUT) { + group = binfo->midi1_first_group; + map = midi2->in_cable_mapping + midi2->num_midi1_in; + for (i = 0; i < binfo->midi1_num_groups; i++, group++, map++) { + if (midi2->num_midi1_in >= MAX_CABLES) + break; + map->ep = ep; + map->block = blk; + map->group = group; + midi2->num_midi1_in++; + /* store 1-based cable number */ + ep->in_group_to_cable[group] = midi2->num_midi1_in; + } + } + + if (binfo->direction != SNDRV_UMP_DIR_INPUT) { + group = binfo->midi1_first_group; + map = midi2->out_cable_mapping + midi2->num_midi1_out; + for (i = 0; i < binfo->midi1_num_groups; i++, group++, map++) { + if (midi2->num_midi1_out >= MAX_CABLES) + break; + map->ep = ep; + map->block = blk; + map->group = group; + midi2->num_midi1_out++; + } + } +} + +/* gadget alloc callback */ +static struct usb_function *f_midi2_alloc(struct usb_function_instance *fi) +{ + struct f_midi2 *midi2; + struct f_midi2_opts *opts; + struct f_midi2_ep *ep; + struct f_midi2_block *bp; + int i, num_eps, blk; + + midi2 = kzalloc(sizeof(*midi2), GFP_KERNEL); + if (!midi2) + return ERR_PTR(-ENOMEM); + + opts = container_of(fi, struct f_midi2_opts, func_inst); + mutex_lock(&opts->lock); + num_eps = verify_parameters(opts); + if (num_eps < 0) { + mutex_unlock(&opts->lock); + kfree(midi2); + return ERR_PTR(num_eps); + } + ++opts->refcnt; + mutex_unlock(&opts->lock); + + spin_lock_init(&midi2->queue_lock); + + midi2->func.name = "midi2_func"; + midi2->func.bind = f_midi2_bind; + midi2->func.unbind = f_midi2_unbind; + midi2->func.get_alt = f_midi2_get_alt; + midi2->func.set_alt = f_midi2_set_alt; + midi2->func.setup = f_midi2_setup; + midi2->func.disable = f_midi2_disable; + midi2->func.free_func = f_midi2_free; + + midi2->info = opts->info; + midi2->num_eps = num_eps; + + for (i = 0; i < num_eps; i++) { + ep = &midi2->midi2_eps[i]; + ep->info = opts->eps[i]->info; + ep->card = midi2; + for (blk = 0; blk < SNDRV_UMP_MAX_BLOCKS && + opts->eps[i]->blks[blk]; blk++) { + bp = &ep->blks[blk]; + ep->num_blks++; + bp->info = opts->eps[i]->blks[blk]->info; + bp->gtb_id = ++midi2->total_blocks; + } + } + + midi2->string_defs = kcalloc(midi2->total_blocks + 1, + sizeof(*midi2->string_defs), GFP_KERNEL); + if (!midi2->string_defs) { + do_f_midi2_free(midi2, opts); + return ERR_PTR(-ENOMEM); + } + + if (opts->info.iface_name && *opts->info.iface_name) + midi2->string_defs[STR_IFACE].s = opts->info.iface_name; + else + midi2->string_defs[STR_IFACE].s = ump_ep_name(&midi2->midi2_eps[0]); + + for (i = 0; i < midi2->num_eps; i++) { + ep = &midi2->midi2_eps[i]; + for (blk = 0; blk < ep->num_blks; blk++) { + bp = &ep->blks[blk]; + midi2->string_defs[gtb_to_str_id(bp->gtb_id)].s = + ump_fb_name(&bp->info); + + fill_midi1_cable_mapping(midi2, ep, blk); + } + } + + if (!midi2->num_midi1_in && !midi2->num_midi1_out) { + pr_err("f_midi2: MIDI1 definition is missing\n"); + do_f_midi2_free(midi2, opts); + return ERR_PTR(-EINVAL); + } + + return &midi2->func; +} + +DECLARE_USB_FUNCTION_INIT(midi2, f_midi2_alloc_inst, f_midi2_alloc); + +MODULE_DESCRIPTION("USB MIDI 2.0 class function driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 424bb3b666db..0e38330271d5 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -11,14 +11,17 @@ * Copyright (C) 2008 Nokia Corporation */ +#include <linux/cleanup.h> #include <linux/kernel.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/device.h> #include <linux/etherdevice.h> #include <linux/crc32.h> +#include <linux/string_choices.h> #include <linux/usb/cdc.h> +#include <linux/usb/gadget.h> #include "u_ether.h" #include "u_ether_configfs.h" @@ -80,21 +83,6 @@ static inline struct f_ncm *func_to_ncm(struct usb_function *f) return container_of(f, struct f_ncm, port.func); } -/* peak (theoretical) bulk transfer rate in bits-per-second */ -static inline unsigned ncm_bitrate(struct usb_gadget *g) -{ - if (!g) - return 0; - else if (gadget_is_superspeed(g) && g->speed >= USB_SPEED_SUPER_PLUS) - return 4250000000U; - else if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return 3750000000U; - else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return 13 * 512 * 8 * 1000 * 8; - else - return 19 * 64 * 1 * 1000 * 8; -} - /*-------------------------------------------------------------------------*/ /* @@ -118,6 +106,16 @@ static inline unsigned ncm_bitrate(struct usb_gadget *g) /* Delay for the transmit to wait before sending an unfilled NTB frame. */ #define TX_TIMEOUT_NSECS 300000 +/* + * Although max mtu as dictated by u_ether is 15412 bytes, setting + * max_segment_size to 15426 would not be efficient. If user chooses segment + * size to be (>= 8192), then we can't aggregate more than one buffer in each + * NTB (assuming each packet coming from network layer is >= 8192 bytes) as ep + * maxpacket limit is 16384. So let max_segment_size be limited to 8000 to allow + * at least 2 packets to be aggregated reducing wastage of NTB buffer space + */ +#define MAX_DATAGRAM_SIZE 8000 + #define FORMATS_SUPPORTED (USB_CDC_NCM_NTB16_SUPPORTED | \ USB_CDC_NCM_NTB32_SUPPORTED) @@ -194,7 +192,6 @@ static struct usb_cdc_ether_desc ecm_desc = { /* this descriptor actually adds value, surprise! */ /* .iMACAddress = DYNAMIC */ .bmEthernetStatistics = cpu_to_le32(0), /* no statistics */ - .wMaxSegmentSize = cpu_to_le16(ETH_FRAME_LEN), .wNumberMCFilters = cpu_to_le16(0), .bNumberPowerFilters = 0, }; @@ -564,7 +561,7 @@ static void ncm_do_notify(struct f_ncm *ncm) req->length = sizeof *event; DBG(cdev, "notify connect %s\n", - ncm->is_open ? "true" : "false"); + str_true_false(ncm->is_open)); ncm->notify_state = NCM_NOTIFY_NONE; break; @@ -576,10 +573,10 @@ static void ncm_do_notify(struct f_ncm *ncm) /* SPEED_CHANGE data is up/down speeds in bits/sec */ data = req->buf + sizeof *event; - data[0] = cpu_to_le32(ncm_bitrate(cdev->gadget)); + data[0] = cpu_to_le32(gether_bitrate(cdev->gadget)); data[1] = data[0]; - DBG(cdev, "notify speed %u\n", ncm_bitrate(cdev->gadget)); + DBG(cdev, "notify speed %u\n", gether_bitrate(cdev->gadget)); ncm->notify_state = NCM_NOTIFY_CONNECT; break; } @@ -884,7 +881,7 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) if (alt > 1) goto fail; - if (ncm->port.in_ep->enabled) { + if (ncm->netdev) { DBG(cdev, "reset ncm\n"); ncm->netdev = NULL; gether_disconnect(&ncm->port); @@ -1171,7 +1168,8 @@ static int ncm_unwrap_ntb(struct gether *port, struct sk_buff_head *list) { struct f_ncm *ncm = func_to_ncm(&port->func); - __le16 *tmp = (void *) skb->data; + unsigned char *ntb_ptr = skb->data; + __le16 *tmp; unsigned index, index2; int ndp_index; unsigned dg_len, dg_len2; @@ -1180,10 +1178,18 @@ static int ncm_unwrap_ntb(struct gether *port, struct sk_buff *skb2; int ret = -EINVAL; unsigned ntb_max = le32_to_cpu(ntb_parameters.dwNtbOutMaxSize); - unsigned frame_max = le16_to_cpu(ecm_desc.wMaxSegmentSize); + unsigned frame_max; const struct ndp_parser_opts *opts = ncm->parser_opts; unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; int dgram_counter; + int to_process = skb->len; + struct f_ncm_opts *ncm_opts; + + ncm_opts = container_of(port->func.fi, struct f_ncm_opts, func_inst); + frame_max = ncm_opts->max_segment_size; + +parse_ntb: + tmp = (__le16 *)ntb_ptr; /* dwSignature */ if (get_unaligned_le32(tmp) != opts->nth_sign) { @@ -1230,7 +1236,7 @@ static int ncm_unwrap_ntb(struct gether *port, * walk through NDP * dwSignature */ - tmp = (void *)(skb->data + ndp_index); + tmp = (__le16 *)(ntb_ptr + ndp_index); if (get_unaligned_le32(tmp) != ncm->ndp_sign) { INFO(port->func.config->cdev, "Wrong NDP SIGN\n"); goto err; @@ -1287,11 +1293,11 @@ static int ncm_unwrap_ntb(struct gether *port, if (ncm->is_crc) { uint32_t crc, crc2; - crc = get_unaligned_le32(skb->data + + crc = get_unaligned_le32(ntb_ptr + index + dg_len - crc_len); crc2 = ~crc32_le(~0, - skb->data + index, + ntb_ptr + index, dg_len - crc_len); if (crc != crc2) { INFO(port->func.config->cdev, @@ -1318,7 +1324,7 @@ static int ncm_unwrap_ntb(struct gether *port, dg_len - crc_len); if (skb2 == NULL) goto err; - skb_put_data(skb2, skb->data + index, + skb_put_data(skb2, ntb_ptr + index, dg_len - crc_len); skb_queue_tail(list, skb2); @@ -1331,10 +1337,25 @@ static int ncm_unwrap_ntb(struct gether *port, } while (ndp_len > 2 * (opts->dgram_item_len * 2)); } while (ndp_index); - dev_consume_skb_any(skb); - VDBG(port->func.config->cdev, "Parsed NTB with %d frames\n", dgram_counter); + + to_process -= block_len; + + /* + * Windows NCM driver avoids USB ZLPs by adding a 1-byte + * zero pad as needed. + */ + if (to_process == 1 && + (*(unsigned char *)(ntb_ptr + block_len) == 0x00)) { + to_process--; + } else if ((to_process > 0) && (block_len != 0)) { + ntb_ptr = (unsigned char *)(ntb_ptr + block_len); + goto parse_ntb; + } + + dev_consume_skb_any(skb); + return 0; err: skb_queue_purge(list); @@ -1349,7 +1370,7 @@ static void ncm_disable(struct usb_function *f) DBG(cdev, "ncm deactivated\n"); - if (ncm->port.in_ep->enabled) { + if (ncm->netdev) { ncm->netdev = NULL; gether_disconnect(&ncm->port); } @@ -1413,46 +1434,44 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) struct usb_composite_dev *cdev = c->cdev; struct f_ncm *ncm = func_to_ncm(f); struct usb_string *us; - int status; + int status = 0; struct usb_ep *ep; struct f_ncm_opts *ncm_opts; + struct usb_os_desc_table *os_desc_table __free(kfree) = NULL; + struct usb_request *request __free(free_usb_request) = NULL; + if (!can_support_ecm(cdev->gadget)) return -EINVAL; ncm_opts = container_of(f->fi, struct f_ncm_opts, func_inst); if (cdev->use_os_string) { - f->os_desc_table = kzalloc(sizeof(*f->os_desc_table), - GFP_KERNEL); - if (!f->os_desc_table) + os_desc_table = kzalloc(sizeof(*os_desc_table), GFP_KERNEL); + if (!os_desc_table) return -ENOMEM; - f->os_desc_n = 1; - f->os_desc_table[0].os_desc = &ncm_opts->ncm_os_desc; } - /* - * in drivers/usb/gadget/configfs.c:configfs_composite_bind() - * configurations are bound in sequence with list_for_each_entry, - * in each configuration its functions are bound in sequence - * with list_for_each_entry, so we assume no race condition - * with regard to ncm_opts->bound access - */ + mutex_lock(&ncm_opts->lock); + gether_set_gadget(ncm_opts->net, cdev->gadget); if (!ncm_opts->bound) { - mutex_lock(&ncm_opts->lock); - gether_set_gadget(ncm_opts->net, cdev->gadget); + ncm_opts->net->mtu = (ncm_opts->max_segment_size - ETH_HLEN); status = gether_register_netdev(ncm_opts->net); - mutex_unlock(&ncm_opts->lock); - if (status) - goto fail; - ncm_opts->bound = true; } + mutex_unlock(&ncm_opts->lock); + + if (status) + return status; + + ncm_opts->bound = true; + + ncm_string_defs[1].s = ncm->ethaddr; + us = usb_gstrings_attach(cdev, ncm_strings, ARRAY_SIZE(ncm_string_defs)); - if (IS_ERR(us)) { - status = PTR_ERR(us); - goto fail; - } + if (IS_ERR(us)) + return PTR_ERR(us); + ncm_control_intf.iInterface = us[STRING_CTRL_IDX].id; ncm_data_nop_intf.iInterface = us[STRING_DATA_IDX].id; ncm_data_intf.iInterface = us[STRING_DATA_IDX].id; @@ -1462,55 +1481,49 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; ncm->ctrl_id = status; ncm_iad_desc.bFirstInterface = status; ncm_control_intf.bInterfaceNumber = status; ncm_union_desc.bMasterInterface0 = status; - if (cdev->use_os_string) - f->os_desc_table[0].if_id = - ncm_iad_desc.bFirstInterface; - status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; ncm->data_id = status; ncm_data_nop_intf.bInterfaceNumber = status; ncm_data_intf.bInterfaceNumber = status; ncm_union_desc.bSlaveInterface0 = status; - status = -ENODEV; + ecm_desc.wMaxSegmentSize = cpu_to_le16(ncm_opts->max_segment_size); /* allocate instance-specific endpoints */ ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_in_desc); if (!ep) - goto fail; + return -ENODEV; ncm->port.in_ep = ep; ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_out_desc); if (!ep) - goto fail; + return -ENODEV; ncm->port.out_ep = ep; ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_notify_desc); if (!ep) - goto fail; + return -ENODEV; ncm->notify = ep; - status = -ENOMEM; - /* allocate notification request and buffer */ - ncm->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); - if (!ncm->notify_req) - goto fail; - ncm->notify_req->buf = kmalloc(NCM_STATUS_BYTECOUNT, GFP_KERNEL); - if (!ncm->notify_req->buf) - goto fail; - ncm->notify_req->context = ncm; - ncm->notify_req->complete = ncm_notify_complete; + request = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!request) + return -ENOMEM; + request->buf = kmalloc(NCM_STATUS_BYTECOUNT, GFP_KERNEL); + if (!request->buf) + return -ENOMEM; + request->context = ncm; + request->complete = ncm_notify_complete; /* * support all relevant hardware speeds... we expect that when @@ -1530,7 +1543,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, ncm_ss_function, ncm_ss_function); if (status) - goto fail; + return status; /* * NOTE: all that is done without knowing or caring about @@ -1541,28 +1554,20 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) ncm->port.open = ncm_open; ncm->port.close = ncm_close; - hrtimer_init(&ncm->task_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); - ncm->task_timer.function = ncm_tx_timeout; + hrtimer_setup(&ncm->task_timer, ncm_tx_timeout, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); - DBG(cdev, "CDC Network: %s speed IN/%s OUT/%s NOTIFY/%s\n", - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + if (cdev->use_os_string) { + os_desc_table[0].os_desc = &ncm_opts->ncm_os_desc; + os_desc_table[0].if_id = ncm_iad_desc.bFirstInterface; + f->os_desc_table = no_free_ptr(os_desc_table); + f->os_desc_n = 1; + } + ncm->notify_req = no_free_ptr(request); + + DBG(cdev, "CDC Network: IN/%s OUT/%s NOTIFY/%s\n", ncm->port.in_ep->name, ncm->port.out_ep->name, ncm->notify->name); return 0; - -fail: - kfree(f->os_desc_table); - f->os_desc_n = 0; - - if (ncm->notify_req) { - kfree(ncm->notify_req->buf); - usb_ep_free_request(ncm->notify, ncm->notify_req); - } - - ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); - - return status; } static inline struct f_ncm_opts *to_f_ncm_opts(struct config_item *item) @@ -1586,11 +1591,56 @@ USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(ncm); /* f_ncm_opts_ifname */ USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(ncm); +static ssize_t ncm_opts_max_segment_size_show(struct config_item *item, + char *page) +{ + struct f_ncm_opts *opts = to_f_ncm_opts(item); + u16 segment_size; + + mutex_lock(&opts->lock); + segment_size = opts->max_segment_size; + mutex_unlock(&opts->lock); + + return sysfs_emit(page, "%u\n", segment_size); +} + +static ssize_t ncm_opts_max_segment_size_store(struct config_item *item, + const char *page, size_t len) +{ + struct f_ncm_opts *opts = to_f_ncm_opts(item); + u16 segment_size; + int ret; + + mutex_lock(&opts->lock); + if (opts->refcnt) { + ret = -EBUSY; + goto out; + } + + ret = kstrtou16(page, 0, &segment_size); + if (ret) + goto out; + + if (segment_size > MAX_DATAGRAM_SIZE) { + ret = -EINVAL; + goto out; + } + + opts->max_segment_size = segment_size; + ret = len; +out: + mutex_unlock(&opts->lock); + return ret; +} + +CONFIGFS_ATTR(ncm_opts_, max_segment_size); + static struct configfs_attribute *ncm_attrs[] = { &ncm_opts_attr_dev_addr, &ncm_opts_attr_host_addr, &ncm_opts_attr_qmult, &ncm_opts_attr_ifname, + &ncm_opts_attr_max_segment_size, NULL, }; @@ -1633,6 +1683,7 @@ static struct usb_function_instance *ncm_alloc_inst(void) kfree(opts); return ERR_CAST(net); } + opts->max_segment_size = ETH_FRAME_LEN; INIT_LIST_HEAD(&opts->ncm_os_desc.ext_prop); descs[0] = &opts->ncm_os_desc; @@ -1710,7 +1761,6 @@ static struct usb_function *ncm_alloc(struct usb_function_instance *fi) mutex_unlock(&opts->lock); return ERR_PTR(-EINVAL); } - ncm_string_defs[STRING_MAC_IDX].s = ncm->ethaddr; spin_lock_init(&ncm->lock); ncm_reset_values(ncm); @@ -1736,5 +1786,6 @@ static struct usb_function *ncm_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(ncm, ncm_alloc_inst, ncm_alloc); +MODULE_DESCRIPTION("USB CDC Network (NCM) link function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yauheni Kaliuta"); diff --git a/drivers/usb/gadget/function/f_obex.c b/drivers/usb/gadget/function/f_obex.c index ab26d84ed95e..1305e2326cdf 100644 --- a/drivers/usb/gadget/function/f_obex.c +++ b/drivers/usb/gadget/function/f_obex.c @@ -365,9 +365,8 @@ static int obex_bind(struct usb_configuration *c, struct usb_function *f) if (status) goto fail; - dev_dbg(&cdev->gadget->dev, "obex ttyGS%d: %s speed IN/%s OUT/%s\n", + dev_dbg(&cdev->gadget->dev, "obex ttyGS%d: IN/%s OUT/%s\n", obex->port_num, - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", obex->port.in->name, obex->port.out->name); return 0; @@ -488,4 +487,5 @@ static struct usb_function *obex_alloc(struct usb_function_instance *fi) DECLARE_USB_FUNCTION_INIT(obex, obex_alloc_inst, obex_alloc); MODULE_AUTHOR("Felipe Balbi"); +MODULE_DESCRIPTION("USB CDC OBEX function driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_phonet.c b/drivers/usb/gadget/function/f_phonet.c index 0bebbdf3f213..0aa9e8224cae 100644 --- a/drivers/usb/gadget/function/f_phonet.c +++ b/drivers/usb/gadget/function/f_phonet.c @@ -729,4 +729,5 @@ void gphonet_cleanup(struct net_device *dev) DECLARE_USB_FUNCTION_INIT(phonet, phonet_alloc_inst, phonet_alloc); MODULE_AUTHOR("Rémi Denis-Courmont"); +MODULE_DESCRIPTION("USB CDC Phonet function"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_printer.c b/drivers/usb/gadget/function/f_printer.c index 076dd4c1be96..d295ade8fa67 100644 --- a/drivers/usb/gadget/function/f_printer.c +++ b/drivers/usb/gadget/function/f_printer.c @@ -37,7 +37,7 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/uaccess.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/usb/ch9.h> #include <linux/usb/composite.h> @@ -213,6 +213,7 @@ static inline struct usb_endpoint_descriptor *ep_desc(struct usb_gadget *gadget, struct usb_endpoint_descriptor *ss) { switch (gadget->speed) { + case USB_SPEED_SUPER_PLUS: case USB_SPEED_SUPER: return ss; case USB_SPEED_HIGH: @@ -449,11 +450,8 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) mutex_lock(&dev->lock_printer_io); spin_lock_irqsave(&dev->lock, flags); - if (dev->interface < 0) { - spin_unlock_irqrestore(&dev->lock, flags); - mutex_unlock(&dev->lock_printer_io); - return -ENODEV; - } + if (dev->interface < 0) + goto out_disabled; /* We will use this flag later to check if a printer reset happened * after we turn interrupts back on. @@ -461,6 +459,9 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) dev->reset_printer = 0; setup_rx_reqs(dev); + /* this dropped the lock - need to retest */ + if (dev->interface < 0) + goto out_disabled; bytes_copied = 0; current_rx_req = dev->current_rx_req; @@ -494,6 +495,8 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) wait_event_interruptible(dev->rx_wait, (likely(!list_empty(&dev->rx_buffers)))); spin_lock_irqsave(&dev->lock, flags); + if (dev->interface < 0) + goto out_disabled; } /* We have data to return then copy it to the caller's buffer.*/ @@ -537,6 +540,9 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) return -EAGAIN; } + if (dev->interface < 0) + goto out_disabled; + /* If we not returning all the data left in this RX request * buffer then adjust the amount of data left in the buffer. * Othewise if we are done with this RX request buffer then @@ -566,6 +572,11 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) return bytes_copied; else return -EAGAIN; + +out_disabled: + spin_unlock_irqrestore(&dev->lock, flags); + mutex_unlock(&dev->lock_printer_io); + return -ENODEV; } static ssize_t @@ -586,11 +597,8 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) mutex_lock(&dev->lock_printer_io); spin_lock_irqsave(&dev->lock, flags); - if (dev->interface < 0) { - spin_unlock_irqrestore(&dev->lock, flags); - mutex_unlock(&dev->lock_printer_io); - return -ENODEV; - } + if (dev->interface < 0) + goto out_disabled; /* Check if a printer reset happens while we have interrupts on */ dev->reset_printer = 0; @@ -613,6 +621,8 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) wait_event_interruptible(dev->tx_wait, (likely(!list_empty(&dev->tx_reqs)))); spin_lock_irqsave(&dev->lock, flags); + if (dev->interface < 0) + goto out_disabled; } while (likely(!list_empty(&dev->tx_reqs)) && len) { @@ -662,6 +672,9 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) return -EAGAIN; } + if (dev->interface < 0) + goto out_disabled; + list_add(&req->list, &dev->tx_reqs_active); /* here, we unlock, and only unlock, to avoid deadlock. */ @@ -674,6 +687,8 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } + if (dev->interface < 0) + goto out_disabled; } spin_unlock_irqrestore(&dev->lock, flags); @@ -685,6 +700,11 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) return bytes_copied; else return -EAGAIN; + +out_disabled: + spin_unlock_irqrestore(&dev->lock, flags); + mutex_unlock(&dev->lock_printer_io); + return -ENODEV; } static int @@ -1312,9 +1332,9 @@ static inline int gprinter_get_minor(void) { int ret; - ret = ida_simple_get(&printer_ida, 0, 0, GFP_KERNEL); + ret = ida_alloc(&printer_ida, GFP_KERNEL); if (ret >= PRINTER_MINORS) { - ida_simple_remove(&printer_ida, ret); + ida_free(&printer_ida, ret); ret = -ENODEV; } @@ -1323,7 +1343,7 @@ static inline int gprinter_get_minor(void) static inline void gprinter_put_minor(int minor) { - ida_simple_remove(&printer_ida, minor); + ida_free(&printer_ida, minor); } static int gprinter_setup(int); @@ -1507,6 +1527,7 @@ static struct usb_function *gprinter_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(printer, gprinter_alloc_inst, gprinter_alloc); +MODULE_DESCRIPTION("USB printer function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Craig Nadler"); diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c index ee95e8f5f9d4..7451e7cb7a85 100644 --- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -19,6 +19,8 @@ #include <linux/atomic.h> +#include <linux/usb/gadget.h> + #include "u_ether.h" #include "u_ether_configfs.h" #include "u_rndis.h" @@ -84,19 +86,6 @@ static inline struct f_rndis *func_to_rndis(struct usb_function *f) return container_of(f, struct f_rndis, port.func); } -/* peak (theoretical) bulk transfer rate in bits-per-second */ -static unsigned int bitrate(struct usb_gadget *g) -{ - if (gadget_is_superspeed(g) && g->speed >= USB_SPEED_SUPER_PLUS) - return 4250000000U; - if (gadget_is_superspeed(g) && g->speed == USB_SPEED_SUPER) - return 3750000000U; - else if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return 13 * 512 * 8 * 1000 * 8; - else - return 19 * 64 * 1 * 1000 * 8; -} - /*-------------------------------------------------------------------------*/ /* @@ -640,7 +629,7 @@ static void rndis_open(struct gether *geth) DBG(cdev, "%s\n", __func__); rndis_set_param_medium(rndis->params, RNDIS_MEDIUM_802_3, - bitrate(cdev->gadget) / 100); + gether_bitrate(cdev->gadget) / 100); rndis_signal_connect(rndis->params); } @@ -675,6 +664,8 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) struct usb_ep *ep; struct f_rndis_opts *rndis_opts; + struct usb_os_desc_table *os_desc_table __free(kfree) = NULL; + struct usb_request *request __free(free_usb_request) = NULL; if (!can_support_rndis(c)) return -EINVAL; @@ -682,12 +673,9 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis_opts = container_of(f->fi, struct f_rndis_opts, func_inst); if (cdev->use_os_string) { - f->os_desc_table = kzalloc(sizeof(*f->os_desc_table), - GFP_KERNEL); - if (!f->os_desc_table) + os_desc_table = kzalloc(sizeof(*os_desc_table), GFP_KERNEL); + if (!os_desc_table) return -ENOMEM; - f->os_desc_n = 1; - f->os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc; } rndis_iad_descriptor.bFunctionClass = rndis_opts->class; @@ -705,16 +693,14 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) gether_set_gadget(rndis_opts->net, cdev->gadget); status = gether_register_netdev(rndis_opts->net); if (status) - goto fail; + return status; rndis_opts->bound = true; } us = usb_gstrings_attach(cdev, rndis_strings, ARRAY_SIZE(rndis_string_defs)); - if (IS_ERR(us)) { - status = PTR_ERR(us); - goto fail; - } + if (IS_ERR(us)) + return PTR_ERR(us); rndis_control_intf.iInterface = us[0].id; rndis_data_intf.iInterface = us[1].id; rndis_iad_descriptor.iFunction = us[2].id; @@ -722,36 +708,30 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) /* allocate instance-specific interface IDs */ status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; rndis->ctrl_id = status; rndis_iad_descriptor.bFirstInterface = status; rndis_control_intf.bInterfaceNumber = status; rndis_union_desc.bMasterInterface0 = status; - if (cdev->use_os_string) - f->os_desc_table[0].if_id = - rndis_iad_descriptor.bFirstInterface; - status = usb_interface_id(c, f); if (status < 0) - goto fail; + return status; rndis->data_id = status; rndis_data_intf.bInterfaceNumber = status; rndis_union_desc.bSlaveInterface0 = status; - status = -ENODEV; - /* allocate instance-specific endpoints */ ep = usb_ep_autoconfig(cdev->gadget, &fs_in_desc); if (!ep) - goto fail; + return -ENODEV; rndis->port.in_ep = ep; ep = usb_ep_autoconfig(cdev->gadget, &fs_out_desc); if (!ep) - goto fail; + return -ENODEV; rndis->port.out_ep = ep; /* NOTE: a status/notification endpoint is, strictly speaking, @@ -760,21 +740,19 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) */ ep = usb_ep_autoconfig(cdev->gadget, &fs_notify_desc); if (!ep) - goto fail; + return -ENODEV; rndis->notify = ep; - status = -ENOMEM; - /* allocate notification request and buffer */ - rndis->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); - if (!rndis->notify_req) - goto fail; - rndis->notify_req->buf = kmalloc(STATUS_BYTECOUNT, GFP_KERNEL); - if (!rndis->notify_req->buf) - goto fail; - rndis->notify_req->length = STATUS_BYTECOUNT; - rndis->notify_req->context = rndis; - rndis->notify_req->complete = rndis_response_complete; + request = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!request) + return -ENOMEM; + request->buf = kmalloc(STATUS_BYTECOUNT, GFP_KERNEL); + if (!request->buf) + return -ENOMEM; + request->length = STATUS_BYTECOUNT; + request->context = rndis; + request->complete = rndis_response_complete; /* support all relevant hardware speeds... we expect that when * hardware is dual speed, all bulk-capable endpoints work at @@ -791,7 +769,7 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) status = usb_assign_descriptors(f, eth_fs_function, eth_hs_function, eth_ss_function, eth_ss_function); if (status) - goto fail; + return status; rndis->port.open = rndis_open; rndis->port.close = rndis_close; @@ -802,36 +780,28 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) if (rndis->manufacturer && rndis->vendorID && rndis_set_param_vendor(rndis->params, rndis->vendorID, rndis->manufacturer)) { - status = -EINVAL; - goto fail_free_descs; + usb_free_all_descriptors(f); + return -EINVAL; } + if (cdev->use_os_string) { + os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc; + os_desc_table[0].if_id = rndis_iad_descriptor.bFirstInterface; + f->os_desc_table = no_free_ptr(os_desc_table); + f->os_desc_n = 1; + + } + rndis->notify_req = no_free_ptr(request); + /* NOTE: all that is done without knowing or caring about * the network link ... which is unavailable to this code * until we're activated via set_alt(). */ - DBG(cdev, "RNDIS: %s speed IN/%s OUT/%s NOTIFY/%s\n", - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + DBG(cdev, "RNDIS: IN/%s OUT/%s NOTIFY/%s\n", rndis->port.in_ep->name, rndis->port.out_ep->name, rndis->notify->name); return 0; - -fail_free_descs: - usb_free_all_descriptors(f); -fail: - kfree(f->os_desc_table); - f->os_desc_n = 0; - - if (rndis->notify_req) { - kfree(rndis->notify_req->buf); - usb_ep_free_request(rndis->notify, rndis->notify_req); - } - - ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); - - return status; } void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net) @@ -1028,5 +998,6 @@ static struct usb_function *rndis_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(rndis, rndis_alloc_inst, rndis_alloc); +MODULE_DESCRIPTION("RNDIS link function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/f_serial.c b/drivers/usb/gadget/function/f_serial.c index a9480b9e312e..0f266bc067f5 100644 --- a/drivers/usb/gadget/function/f_serial.c +++ b/drivers/usb/gadget/function/f_serial.c @@ -236,10 +236,8 @@ static int gser_bind(struct usb_configuration *c, struct usb_function *f) gser_ss_function, gser_ss_function); if (status) goto fail; - dev_dbg(&cdev->gadget->dev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n", + dev_dbg(&cdev->gadget->dev, "generic ttyGS%d: IN/%s OUT/%s\n", gser->port_num, - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", gser->port.in->name, gser->port.out->name); return 0; @@ -366,6 +364,12 @@ static void gser_suspend(struct usb_function *f) gserial_suspend(&gser->port); } +static int gser_get_status(struct usb_function *f) +{ + return (f->func_wakeup_armed ? USB_INTRF_STAT_FUNC_RW : 0) | + USB_INTRF_STAT_FUNC_RW_CAP; +} + static struct usb_function *gser_alloc(struct usb_function_instance *fi) { struct f_gser *gser; @@ -389,11 +393,13 @@ static struct usb_function *gser_alloc(struct usb_function_instance *fi) gser->port.func.free_func = gser_free; gser->port.func.resume = gser_resume; gser->port.func.suspend = gser_suspend; + gser->port.func.get_status = gser_get_status; return &gser->port.func; } DECLARE_USB_FUNCTION_INIT(gser, gser_alloc_inst, gser_alloc); +MODULE_DESCRIPTION("generic USB serial function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Al Borchers"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index 6803cd60cc6d..ec5fd25020fd 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -13,10 +13,10 @@ #include <linux/device.h> #include <linux/module.h> #include <linux/usb/composite.h> +#include <linux/usb/func_utils.h> #include <linux/err.h> #include "g_zero.h" -#include "u_f.h" /* * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral @@ -436,9 +436,7 @@ no_iso: if (ret) return ret; - DBG(cdev, "%s speed %s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s\n", - (gadget_is_superspeed(c->cdev->gadget) ? "super" : - (gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full")), + DBG(cdev, "%s: IN/%s, OUT/%s, ISO-IN/%s, ISO-OUT/%s\n", f->name, ss->in_ep->name, ss->out_ep->name, ss->iso_in_ep ? ss->iso_in_ep->name : "<none>", ss->iso_out_ep ? ss->iso_out_ep->name : "<none>"); @@ -1286,4 +1284,5 @@ static void __exit sslb_modexit(void) module_init(sslb_modinit); module_exit(sslb_modexit); +MODULE_DESCRIPTION("USB peripheral source/sink configuration driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/f_subset.c b/drivers/usb/gadget/function/f_subset.c index 51c1cae162d9..ea3fdd842462 100644 --- a/drivers/usb/gadget/function/f_subset.c +++ b/drivers/usb/gadget/function/f_subset.c @@ -367,9 +367,7 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) * until we're activated via set_alt(). */ - DBG(cdev, "CDC Subset: %s speed IN/%s OUT/%s\n", - gadget_is_superspeed(c->cdev->gadget) ? "super" : - gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + DBG(cdev, "CDC Subset: IN/%s OUT/%s\n", geth->port.in_ep->name, geth->port.out_ep->name); return 0; @@ -502,5 +500,6 @@ static struct usb_function *geth_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(geth, geth_alloc_inst, geth_alloc); +MODULE_DESCRIPTION("\"CDC Subset\" Ethernet link function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c index 79ed2e6e576a..6e8804f04baa 100644 --- a/drivers/usb/gadget/function/f_tcm.c +++ b/drivers/usb/gadget/function/f_tcm.c @@ -12,6 +12,7 @@ #include <linux/string.h> #include <linux/configfs.h> #include <linux/ctype.h> +#include <linux/delay.h> #include <linux/usb/ch9.h> #include <linux/usb/composite.h> #include <linux/usb/gadget.h> @@ -19,7 +20,7 @@ #include <scsi/scsi_tcq.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "tcm.h" #include "u_tcm.h" @@ -50,7 +51,7 @@ static int bot_enqueue_cmd_cbw(struct f_uas *fu) if (fu->flags & USBG_BOT_CMD_PEND) return 0; - ret = usb_ep_queue(fu->ep_out, fu->cmd.req, GFP_ATOMIC); + ret = usb_ep_queue(fu->ep_out, fu->cmd[0].req, GFP_ATOMIC); if (!ret) fu->flags |= USBG_BOT_CMD_PEND; return ret; @@ -62,10 +63,11 @@ static void bot_status_complete(struct usb_ep *ep, struct usb_request *req) struct f_uas *fu = cmd->fu; transport_generic_free_cmd(&cmd->se_cmd, 0); - if (req->status < 0) { - pr_err("ERR %s(%d)\n", __func__, __LINE__); + if (req->status == -ESHUTDOWN) return; - } + + if (req->status < 0) + pr_err("ERR %s(%d)\n", __func__, __LINE__); /* CSW completed, wait for next CBW */ bot_enqueue_cmd_cbw(fu); @@ -136,7 +138,7 @@ static void bot_send_bad_status(struct usbg_cmd *cmd) } req->complete = bot_err_compl; req->context = cmd; - req->buf = fu->cmd.buf; + req->buf = fu->cmd[0].buf; usb_ep_queue(ep, req, GFP_KERNEL); } else { bot_enqueue_sense_code(fu, cmd); @@ -196,6 +198,11 @@ static void bot_read_compl(struct usb_ep *ep, struct usb_request *req) if (req->status < 0) pr_err("ERR %s(%d)\n", __func__, __LINE__); + if (req->status == -ESHUTDOWN) { + transport_generic_free_cmd(&cmd->se_cmd, 0); + return; + } + bot_send_status(cmd, true); } @@ -244,11 +251,8 @@ static int usbg_prepare_w_request(struct usbg_cmd *, struct usb_request *); static int bot_send_write_request(struct usbg_cmd *cmd) { struct f_uas *fu = cmd->fu; - struct se_cmd *se_cmd = &cmd->se_cmd; - struct usb_gadget *gadget = fuas_to_gadget(fu); int ret; - init_completion(&cmd->write_complete); cmd->fu = fu; if (!cmd->data_len) { @@ -256,22 +260,6 @@ static int bot_send_write_request(struct usbg_cmd *cmd) return -EINVAL; } - if (!gadget->sg_supported) { - cmd->data_buf = kmalloc(se_cmd->data_length, GFP_KERNEL); - if (!cmd->data_buf) - return -ENOMEM; - - fu->bot_req_out->buf = cmd->data_buf; - } else { - fu->bot_req_out->buf = NULL; - fu->bot_req_out->num_sgs = se_cmd->t_data_nents; - fu->bot_req_out->sg = se_cmd->t_data_sg; - } - - fu->bot_req_out->complete = usbg_data_write_cmpl; - fu->bot_req_out->length = se_cmd->data_length; - fu->bot_req_out->context = cmd; - ret = usbg_prepare_w_request(cmd, fu->bot_req_out); if (ret) goto cleanup; @@ -279,8 +267,6 @@ static int bot_send_write_request(struct usbg_cmd *cmd) if (ret) pr_err("%s(%d)\n", __func__, __LINE__); - wait_for_completion(&cmd->write_complete); - target_execute_cmd(se_cmd); cleanup: return ret; } @@ -292,14 +278,31 @@ static void bot_cmd_complete(struct usb_ep *ep, struct usb_request *req) struct f_uas *fu = req->context; int ret; + if (req->status == -ESHUTDOWN) + return; + fu->flags &= ~USBG_BOT_CMD_PEND; - if (req->status < 0) + if (req->status < 0) { + struct usb_gadget *gadget = fuas_to_gadget(fu); + + dev_err(&gadget->dev, "BOT command req err (%d)\n", req->status); + bot_enqueue_cmd_cbw(fu); return; + } ret = bot_submit_command(fu, req->buf, req->actual); - if (ret) + if (ret) { pr_err("%s(%d): %d\n", __func__, __LINE__, ret); + if (!(fu->flags & USBG_BOT_WEDGED)) + usb_ep_set_wedge(fu->ep_in); + + fu->flags |= USBG_BOT_WEDGED; + bot_enqueue_cmd_cbw(fu); + } else if (fu->flags & USBG_BOT_WEDGED) { + fu->flags &= ~USBG_BOT_WEDGED; + usb_ep_clear_halt(fu->ep_in); + } } static int bot_prepare_reqs(struct f_uas *fu) @@ -314,8 +317,8 @@ static int bot_prepare_reqs(struct f_uas *fu) if (!fu->bot_req_out) goto err_out; - fu->cmd.req = usb_ep_alloc_request(fu->ep_out, GFP_KERNEL); - if (!fu->cmd.req) + fu->cmd[0].req = usb_ep_alloc_request(fu->ep_out, GFP_KERNEL); + if (!fu->cmd[0].req) goto err_cmd; fu->bot_status.req = usb_ep_alloc_request(fu->ep_in, GFP_KERNEL); @@ -327,27 +330,27 @@ static int bot_prepare_reqs(struct f_uas *fu) fu->bot_status.req->complete = bot_status_complete; fu->bot_status.csw.Signature = cpu_to_le32(US_BULK_CS_SIGN); - fu->cmd.buf = kmalloc(fu->ep_out->maxpacket, GFP_KERNEL); - if (!fu->cmd.buf) + fu->cmd[0].buf = kmalloc(fu->ep_out->maxpacket, GFP_KERNEL); + if (!fu->cmd[0].buf) goto err_buf; - fu->cmd.req->complete = bot_cmd_complete; - fu->cmd.req->buf = fu->cmd.buf; - fu->cmd.req->length = fu->ep_out->maxpacket; - fu->cmd.req->context = fu; + fu->cmd[0].req->complete = bot_cmd_complete; + fu->cmd[0].req->buf = fu->cmd[0].buf; + fu->cmd[0].req->length = fu->ep_out->maxpacket; + fu->cmd[0].req->context = fu; ret = bot_enqueue_cmd_cbw(fu); if (ret) goto err_queue; return 0; err_queue: - kfree(fu->cmd.buf); - fu->cmd.buf = NULL; + kfree(fu->cmd[0].buf); + fu->cmd[0].buf = NULL; err_buf: usb_ep_free_request(fu->ep_in, fu->bot_status.req); err_sts: - usb_ep_free_request(fu->ep_out, fu->cmd.req); - fu->cmd.req = NULL; + usb_ep_free_request(fu->ep_out, fu->cmd[0].req); + fu->cmd[0].req = NULL; err_cmd: usb_ep_free_request(fu->ep_out, fu->bot_req_out); fu->bot_req_out = NULL; @@ -372,16 +375,16 @@ static void bot_cleanup_old_alt(struct f_uas *fu) usb_ep_free_request(fu->ep_in, fu->bot_req_in); usb_ep_free_request(fu->ep_out, fu->bot_req_out); - usb_ep_free_request(fu->ep_out, fu->cmd.req); + usb_ep_free_request(fu->ep_out, fu->cmd[0].req); usb_ep_free_request(fu->ep_in, fu->bot_status.req); - kfree(fu->cmd.buf); + kfree(fu->cmd[0].buf); fu->bot_req_in = NULL; fu->bot_req_out = NULL; - fu->cmd.req = NULL; + fu->cmd[0].req = NULL; fu->bot_status.req = NULL; - fu->cmd.buf = NULL; + fu->cmd[0].buf = NULL; } static void bot_set_alt(struct f_uas *fu) @@ -441,14 +444,10 @@ static int usbg_bot_setup(struct usb_function *f, pr_err("No LUNs configured?\n"); return -EINVAL; } - /* - * If 4 LUNs are present we return 3 i.e. LUN 0..3 can be - * accessed. The upper limit is 0xf - */ luns--; - if (luns > 0xf) { + if (luns > US_BULK_MAX_LUN_LIMIT) { pr_info_once("Limiting the number of luns to 16\n"); - luns = 0xf; + luns = US_BULK_MAX_LUN_LIMIT; } ret_lun = cdev->req->buf; *ret_lun = luns; @@ -457,6 +456,11 @@ static int usbg_bot_setup(struct usb_function *f, case US_BULK_RESET_REQUEST: /* XXX maybe we should remove previous requests for IN + OUT */ + if (fu->flags & USBG_BOT_WEDGED) { + fu->flags &= ~USBG_BOT_WEDGED; + usb_ep_clear_halt(fu->ep_in); + } + bot_enqueue_cmd_cbw(fu); return 0; } @@ -465,6 +469,45 @@ static int usbg_bot_setup(struct usb_function *f, /* Start uas.c code */ +static int tcm_to_uasp_response(enum tcm_tmrsp_table code) +{ + switch (code) { + case TMR_FUNCTION_FAILED: + return RC_TMF_FAILED; + case TMR_FUNCTION_COMPLETE: + case TMR_TASK_DOES_NOT_EXIST: + return RC_TMF_COMPLETE; + case TMR_LUN_DOES_NOT_EXIST: + return RC_INCORRECT_LUN; + case TMR_FUNCTION_REJECTED: + case TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED: + default: + return RC_TMF_NOT_SUPPORTED; + } +} + +static unsigned char uasp_to_tcm_func(int code) +{ + switch (code) { + case TMF_ABORT_TASK: + return TMR_ABORT_TASK; + case TMF_ABORT_TASK_SET: + return TMR_ABORT_TASK_SET; + case TMF_CLEAR_TASK_SET: + return TMR_CLEAR_TASK_SET; + case TMF_LOGICAL_UNIT_RESET: + return TMR_LUN_RESET; + case TMF_CLEAR_ACA: + return TMR_CLEAR_ACA; + case TMF_I_T_NEXUS_RESET: + case TMF_QUERY_TASK: + case TMF_QUERY_TASK_SET: + case TMF_QUERY_ASYNC_EVENT: + default: + return TMR_UNKNOWN; + } +} + static void uasp_cleanup_one_stream(struct f_uas *fu, struct uas_stream *stream) { /* We have either all three allocated or none */ @@ -482,10 +525,14 @@ static void uasp_cleanup_one_stream(struct f_uas *fu, struct uas_stream *stream) static void uasp_free_cmdreq(struct f_uas *fu) { - usb_ep_free_request(fu->ep_cmd, fu->cmd.req); - kfree(fu->cmd.buf); - fu->cmd.req = NULL; - fu->cmd.buf = NULL; + int i; + + for (i = 0; i < USBG_NUM_CMDS; i++) { + usb_ep_free_request(fu->ep_cmd, fu->cmd[i].req); + kfree(fu->cmd[i].buf); + fu->cmd[i].req = NULL; + fu->cmd[i].buf = NULL; + } } static void uasp_cleanup_old_alt(struct f_uas *fu) @@ -500,7 +547,7 @@ static void uasp_cleanup_old_alt(struct f_uas *fu) usb_ep_disable(fu->ep_status); usb_ep_disable(fu->ep_cmd); - for (i = 0; i < UASP_SS_EP_COMP_NUM_STREAMS; i++) + for (i = 0; i < USBG_NUM_CMDS; i++) uasp_cleanup_one_stream(fu, &fu->stream[i]); uasp_free_cmdreq(fu); } @@ -512,7 +559,7 @@ static int uasp_prepare_r_request(struct usbg_cmd *cmd) struct se_cmd *se_cmd = &cmd->se_cmd; struct f_uas *fu = cmd->fu; struct usb_gadget *gadget = fuas_to_gadget(fu); - struct uas_stream *stream = cmd->stream; + struct uas_stream *stream = &fu->stream[se_cmd->map_tag]; if (!gadget->sg_supported) { cmd->data_buf = kmalloc(se_cmd->data_length, GFP_ATOMIC); @@ -532,6 +579,7 @@ static int uasp_prepare_r_request(struct usbg_cmd *cmd) } stream->req_in->is_last = 1; + stream->req_in->stream_id = cmd->tag; stream->req_in->complete = uasp_status_data_cmpl; stream->req_in->length = se_cmd->data_length; stream->req_in->context = cmd; @@ -544,7 +592,7 @@ static void uasp_prepare_status(struct usbg_cmd *cmd) { struct se_cmd *se_cmd = &cmd->se_cmd; struct sense_iu *iu = &cmd->sense_iu; - struct uas_stream *stream = cmd->stream; + struct uas_stream *stream = &cmd->fu->stream[se_cmd->map_tag]; cmd->state = UASP_QUEUE_COMMAND; iu->iu_id = IU_ID_STATUS; @@ -556,20 +604,76 @@ static void uasp_prepare_status(struct usbg_cmd *cmd) iu->len = cpu_to_be16(se_cmd->scsi_sense_length); iu->status = se_cmd->scsi_status; stream->req_status->is_last = 1; + stream->req_status->stream_id = cmd->tag; stream->req_status->context = cmd; stream->req_status->length = se_cmd->scsi_sense_length + 16; stream->req_status->buf = iu; stream->req_status->complete = uasp_status_data_cmpl; } +static void uasp_prepare_response(struct usbg_cmd *cmd) +{ + struct se_cmd *se_cmd = &cmd->se_cmd; + struct response_iu *rsp_iu = &cmd->response_iu; + struct uas_stream *stream = &cmd->fu->stream[se_cmd->map_tag]; + + cmd->state = UASP_QUEUE_COMMAND; + rsp_iu->iu_id = IU_ID_RESPONSE; + rsp_iu->tag = cpu_to_be16(cmd->tag); + + if (cmd->tmr_rsp != RC_RESPONSE_UNKNOWN) + rsp_iu->response_code = cmd->tmr_rsp; + else + rsp_iu->response_code = + tcm_to_uasp_response(se_cmd->se_tmr_req->response); + + /* + * The UASP driver must support all the task management functions listed + * in Table 20 of UAS-r04. To remain compliant while indicate that the + * TMR did not go through, report RC_TMF_FAILED instead of + * RC_TMF_NOT_SUPPORTED and print a warning to the user. + */ + switch (cmd->tmr_func) { + case TMF_ABORT_TASK: + case TMF_ABORT_TASK_SET: + case TMF_CLEAR_TASK_SET: + case TMF_LOGICAL_UNIT_RESET: + case TMF_CLEAR_ACA: + case TMF_I_T_NEXUS_RESET: + case TMF_QUERY_TASK: + case TMF_QUERY_TASK_SET: + case TMF_QUERY_ASYNC_EVENT: + if (rsp_iu->response_code == RC_TMF_NOT_SUPPORTED) { + struct usb_gadget *gadget = fuas_to_gadget(cmd->fu); + + dev_warn(&gadget->dev, "TMF function %d not supported\n", + cmd->tmr_func); + rsp_iu->response_code = RC_TMF_FAILED; + } + break; + default: + break; + } + + stream->req_status->is_last = 1; + stream->req_status->stream_id = cmd->tag; + stream->req_status->context = cmd; + stream->req_status->length = sizeof(struct response_iu); + stream->req_status->buf = rsp_iu; + stream->req_status->complete = uasp_status_data_cmpl; +} + +static void usbg_release_cmd(struct se_cmd *se_cmd); +static int uasp_send_tm_response(struct usbg_cmd *cmd); + static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req) { struct usbg_cmd *cmd = req->context; - struct uas_stream *stream = cmd->stream; struct f_uas *fu = cmd->fu; + struct uas_stream *stream = &fu->stream[cmd->se_cmd.map_tag]; int ret; - if (req->status < 0) + if (req->status == -ESHUTDOWN) goto cleanup; switch (cmd->state) { @@ -600,8 +704,37 @@ static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req) break; case UASP_QUEUE_COMMAND: - transport_generic_free_cmd(&cmd->se_cmd, 0); - usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); + /* + * Overlapped command detected and cancelled. + * So send overlapped attempted status. + */ + if (cmd->tmr_rsp == RC_OVERLAPPED_TAG && + req->status == -ECONNRESET) { + uasp_send_tm_response(cmd); + return; + } + + hash_del(&stream->node); + + /* + * If no command submitted to target core here, just free the + * bitmap index. This is for the cases where f_tcm handles + * status response instead of the target core. + */ + if (cmd->tmr_rsp != RC_OVERLAPPED_TAG && + cmd->tmr_rsp != RC_RESPONSE_UNKNOWN) { + struct se_session *se_sess; + + se_sess = fu->tpg->tpg_nexus->tvn_se_sess; + sbitmap_queue_clear(&se_sess->sess_tag_pool, + cmd->se_cmd.map_tag, + cmd->se_cmd.map_cpu); + } else { + transport_generic_free_cmd(&cmd->se_cmd, 0); + } + + usb_ep_queue(fu->ep_cmd, cmd->req, GFP_ATOMIC); + complete(&stream->cmd_completion); break; default: @@ -610,27 +743,38 @@ static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req) return; cleanup: + hash_del(&stream->node); transport_generic_free_cmd(&cmd->se_cmd, 0); } static int uasp_send_status_response(struct usbg_cmd *cmd) { struct f_uas *fu = cmd->fu; - struct uas_stream *stream = cmd->stream; + struct uas_stream *stream = &fu->stream[cmd->se_cmd.map_tag]; struct sense_iu *iu = &cmd->sense_iu; iu->tag = cpu_to_be16(cmd->tag); - stream->req_status->complete = uasp_status_data_cmpl; - stream->req_status->context = cmd; cmd->fu = fu; uasp_prepare_status(cmd); return usb_ep_queue(fu->ep_status, stream->req_status, GFP_ATOMIC); } +static int uasp_send_tm_response(struct usbg_cmd *cmd) +{ + struct f_uas *fu = cmd->fu; + struct uas_stream *stream = &fu->stream[cmd->se_cmd.map_tag]; + struct response_iu *iu = &cmd->response_iu; + + iu->tag = cpu_to_be16(cmd->tag); + cmd->fu = fu; + uasp_prepare_response(cmd); + return usb_ep_queue(fu->ep_status, stream->req_status, GFP_ATOMIC); +} + static int uasp_send_read_response(struct usbg_cmd *cmd) { struct f_uas *fu = cmd->fu; - struct uas_stream *stream = cmd->stream; + struct uas_stream *stream = &fu->stream[cmd->se_cmd.map_tag]; struct sense_iu *iu = &cmd->sense_iu; int ret; @@ -674,11 +818,10 @@ static int uasp_send_write_request(struct usbg_cmd *cmd) { struct f_uas *fu = cmd->fu; struct se_cmd *se_cmd = &cmd->se_cmd; - struct uas_stream *stream = cmd->stream; + struct uas_stream *stream = &fu->stream[se_cmd->map_tag]; struct sense_iu *iu = &cmd->sense_iu; int ret; - init_completion(&cmd->write_complete); cmd->fu = fu; iu->tag = cpu_to_be16(cmd->tag); @@ -710,36 +853,31 @@ static int uasp_send_write_request(struct usbg_cmd *cmd) pr_err("%s(%d)\n", __func__, __LINE__); } - wait_for_completion(&cmd->write_complete); - target_execute_cmd(se_cmd); cleanup: return ret; } -static int usbg_submit_command(struct f_uas *, void *, unsigned int); +static int usbg_submit_command(struct f_uas *, struct usb_request *); static void uasp_cmd_complete(struct usb_ep *ep, struct usb_request *req) { struct f_uas *fu = req->context; - int ret; - if (req->status < 0) + if (req->status == -ESHUTDOWN) return; - ret = usbg_submit_command(fu, req->buf, req->actual); - /* - * Once we tune for performance enqueue the command req here again so - * we can receive a second command while we processing this one. Pay - * attention to properly sync STAUS endpoint with DATA IN + OUT so you - * don't break HS. - */ - if (!ret) + if (req->status < 0) { + usb_ep_queue(fu->ep_cmd, req, GFP_ATOMIC); return; - usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); + } + + usbg_submit_command(fu, req); } static int uasp_alloc_stream_res(struct f_uas *fu, struct uas_stream *stream) { + init_completion(&stream->cmd_completion); + stream->req_in = usb_ep_alloc_request(fu->ep_in, GFP_KERNEL); if (!stream->req_in) goto out; @@ -764,66 +902,48 @@ out: return -ENOMEM; } -static int uasp_alloc_cmd(struct f_uas *fu) +static int uasp_alloc_cmd(struct f_uas *fu, int i) { - fu->cmd.req = usb_ep_alloc_request(fu->ep_cmd, GFP_KERNEL); - if (!fu->cmd.req) + fu->cmd[i].req = usb_ep_alloc_request(fu->ep_cmd, GFP_KERNEL); + if (!fu->cmd[i].req) goto err; - fu->cmd.buf = kmalloc(fu->ep_cmd->maxpacket, GFP_KERNEL); - if (!fu->cmd.buf) + fu->cmd[i].buf = kmalloc(fu->ep_cmd->maxpacket, GFP_KERNEL); + if (!fu->cmd[i].buf) goto err_buf; - fu->cmd.req->complete = uasp_cmd_complete; - fu->cmd.req->buf = fu->cmd.buf; - fu->cmd.req->length = fu->ep_cmd->maxpacket; - fu->cmd.req->context = fu; + fu->cmd[i].req->complete = uasp_cmd_complete; + fu->cmd[i].req->buf = fu->cmd[i].buf; + fu->cmd[i].req->length = fu->ep_cmd->maxpacket; + fu->cmd[i].req->context = fu; return 0; err_buf: - usb_ep_free_request(fu->ep_cmd, fu->cmd.req); + usb_ep_free_request(fu->ep_cmd, fu->cmd[i].req); err: return -ENOMEM; } -static void uasp_setup_stream_res(struct f_uas *fu, int max_streams) -{ - int i; - - for (i = 0; i < max_streams; i++) { - struct uas_stream *s = &fu->stream[i]; - - s->req_in->stream_id = i + 1; - s->req_out->stream_id = i + 1; - s->req_status->stream_id = i + 1; - } -} - static int uasp_prepare_reqs(struct f_uas *fu) { int ret; int i; - int max_streams; - - if (fu->flags & USBG_USE_STREAMS) - max_streams = UASP_SS_EP_COMP_NUM_STREAMS; - else - max_streams = 1; - for (i = 0; i < max_streams; i++) { + for (i = 0; i < USBG_NUM_CMDS; i++) { ret = uasp_alloc_stream_res(fu, &fu->stream[i]); if (ret) goto err_cleanup; } - ret = uasp_alloc_cmd(fu); - if (ret) - goto err_free_stream; - uasp_setup_stream_res(fu, max_streams); + for (i = 0; i < USBG_NUM_CMDS; i++) { + ret = uasp_alloc_cmd(fu, i); + if (ret) + goto err_free_stream; - ret = usb_ep_queue(fu->ep_cmd, fu->cmd.req, GFP_ATOMIC); - if (ret) - goto err_free_stream; + ret = usb_ep_queue(fu->ep_cmd, fu->cmd[i].req, GFP_ATOMIC); + if (ret) + goto err_free_stream; + } return 0; @@ -914,6 +1034,8 @@ static int get_cmd_dir(const unsigned char *cdb) case READ_TOC: case READ_FORMAT_CAPACITIES: case REQUEST_SENSE: + case ATA_12: + case ATA_16: ret = DMA_FROM_DEVICE; break; @@ -957,7 +1079,18 @@ static void usbg_data_write_cmpl(struct usb_ep *ep, struct usb_request *req) struct usbg_cmd *cmd = req->context; struct se_cmd *se_cmd = &cmd->se_cmd; - if (req->status < 0) { + cmd->state = UASP_QUEUE_COMMAND; + + if (req->status == -ESHUTDOWN) { + struct uas_stream *stream = &cmd->fu->stream[se_cmd->map_tag]; + + hash_del(&stream->node); + target_put_sess_cmd(se_cmd); + transport_generic_free_cmd(&cmd->se_cmd, 0); + return; + } + + if (req->status) { pr_err("%s() state %d transfer failed\n", __func__, cmd->state); goto cleanup; } @@ -969,11 +1102,22 @@ static void usbg_data_write_cmpl(struct usb_ep *ep, struct usb_request *req) se_cmd->data_length); } - complete(&cmd->write_complete); + cmd->flags |= USBG_CMD_PENDING_DATA_WRITE; + queue_work(cmd->fu->tpg->workqueue, &cmd->work); return; cleanup: - transport_generic_free_cmd(&cmd->se_cmd, 0); + target_put_sess_cmd(se_cmd); + + /* Command was aborted due to overlapped tag */ + if (cmd->state == UASP_QUEUE_COMMAND && + cmd->tmr_rsp == RC_OVERLAPPED_TAG) { + uasp_send_tm_response(cmd); + return; + } + + transport_send_check_condition_and_sense(se_cmd, + TCM_CHECK_CONDITION_ABORT_CMD, 0); } static int usbg_prepare_w_request(struct usbg_cmd *cmd, struct usb_request *req) @@ -995,9 +1139,12 @@ static int usbg_prepare_w_request(struct usbg_cmd *cmd, struct usb_request *req) } req->is_last = 1; + req->stream_id = cmd->tag; req->complete = usbg_data_write_cmpl; req->length = se_cmd->data_length; req->context = cmd; + + cmd->state = UASP_SEND_STATUS; return 0; } @@ -1037,36 +1184,153 @@ static int usbg_send_read_response(struct se_cmd *se_cmd) return uasp_send_read_response(cmd); } -static void usbg_cmd_work(struct work_struct *work) +static void usbg_aborted_task(struct se_cmd *se_cmd); + +static void usbg_submit_tmr(struct usbg_cmd *cmd) +{ + struct se_session *se_sess; + struct se_cmd *se_cmd; + int flags = TARGET_SCF_ACK_KREF; + + se_cmd = &cmd->se_cmd; + se_sess = cmd->fu->tpg->tpg_nexus->tvn_se_sess; + + target_submit_tmr(se_cmd, se_sess, + cmd->response_iu.add_response_info, + cmd->unpacked_lun, NULL, uasp_to_tcm_func(cmd->tmr_func), + GFP_ATOMIC, cmd->tag, flags); +} + +static void usbg_submit_cmd(struct usbg_cmd *cmd) { - struct usbg_cmd *cmd = container_of(work, struct usbg_cmd, work); struct se_cmd *se_cmd; struct tcm_usbg_nexus *tv_nexus; struct usbg_tpg *tpg; int dir, flags = (TARGET_SCF_UNKNOWN_SIZE | TARGET_SCF_ACK_KREF); + /* + * Note: each command will spawn its own process, and each stage of the + * command is processed sequentially. Should this no longer be the case, + * locking is needed. + */ + if (cmd->flags & USBG_CMD_PENDING_DATA_WRITE) { + target_execute_cmd(&cmd->se_cmd); + cmd->flags &= ~USBG_CMD_PENDING_DATA_WRITE; + return; + } + se_cmd = &cmd->se_cmd; tpg = cmd->fu->tpg; tv_nexus = tpg->tpg_nexus; dir = get_cmd_dir(cmd->cmd_buf); - if (dir < 0) { - __target_init_cmd(se_cmd, - tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, - tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, - cmd->prio_attr, cmd->sense_iu.sense, - cmd->unpacked_lun, NULL); + if (dir < 0) goto out; - } target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, 0, cmd->prio_attr, dir, flags); + return; out: + __target_init_cmd(se_cmd, + tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, + tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, + cmd->prio_attr, cmd->sense_iu.sense, + cmd->unpacked_lun, NULL); transport_send_check_condition_and_sense(se_cmd, - TCM_UNSUPPORTED_SCSI_OPCODE, 1); - transport_generic_free_cmd(&cmd->se_cmd, 0); + TCM_UNSUPPORTED_SCSI_OPCODE, 0); +} + +static void usbg_cmd_work(struct work_struct *work) +{ + struct usbg_cmd *cmd = container_of(work, struct usbg_cmd, work); + + /* + * Failure is detected by f_tcm here. Skip submitting the command to the + * target core if we already know the failing response and send the usb + * response to the host directly. + */ + if (cmd->tmr_rsp != RC_RESPONSE_UNKNOWN) + goto skip; + + if (cmd->tmr_func) + usbg_submit_tmr(cmd); + else + usbg_submit_cmd(cmd); + + return; + +skip: + if (cmd->tmr_rsp == RC_OVERLAPPED_TAG) { + struct f_uas *fu = cmd->fu; + struct se_session *se_sess; + struct uas_stream *stream = NULL; + struct hlist_node *tmp; + struct usbg_cmd *active_cmd = NULL; + + se_sess = cmd->fu->tpg->tpg_nexus->tvn_se_sess; + + hash_for_each_possible_safe(fu->stream_hash, stream, tmp, node, cmd->tag) { + int i = stream - &fu->stream[0]; + + active_cmd = &((struct usbg_cmd *)se_sess->sess_cmd_map)[i]; + if (active_cmd->tag == cmd->tag) + break; + } + + /* Sanity check */ + if (!stream || (active_cmd && active_cmd->tag != cmd->tag)) { + usbg_submit_command(cmd->fu, cmd->req); + return; + } + + reinit_completion(&stream->cmd_completion); + + /* + * A UASP command consists of the command, data, and status + * stages, each operating sequentially from different endpoints. + * + * Each USB endpoint operates independently, and depending on + * hardware implementation, a completion callback for a transfer + * from one endpoint may not reflect the order of completion on + * the wire. This is particularly true for devices with + * endpoints that have independent interrupts and event buffers. + * + * The driver must still detect misbehaving hosts and respond + * with an overlap status. To reduce false overlap failures, + * allow the active and matching stream ID a brief 1ms to + * complete before responding with an overlap command failure. + * Overlap failure should be rare. + */ + wait_for_completion_timeout(&stream->cmd_completion, msecs_to_jiffies(1)); + + /* If the previous stream is completed, retry the command. */ + if (!hash_hashed(&stream->node)) { + usbg_submit_command(cmd->fu, cmd->req); + return; + } + + /* + * The command isn't submitted to the target core, so we're safe + * to remove the bitmap index from the session tag pool. + */ + sbitmap_queue_clear(&se_sess->sess_tag_pool, + cmd->se_cmd.map_tag, + cmd->se_cmd.map_cpu); + + /* + * Overlap command tag detected. Cancel any pending transfer of + * the command submitted to target core. + */ + active_cmd->tmr_rsp = RC_OVERLAPPED_TAG; + usbg_aborted_task(&active_cmd->se_cmd); + + /* Send the response after the transfer is aborted. */ + return; + } + + uasp_send_tm_response(cmd); } static struct usbg_cmd *usbg_get_cmd(struct f_uas *fu, @@ -1084,6 +1348,7 @@ static struct usbg_cmd *usbg_get_cmd(struct f_uas *fu, memset(cmd, 0, sizeof(*cmd)); cmd->se_cmd.map_tag = tag; cmd->se_cmd.map_cpu = cpu; + cmd->se_cmd.cpuid = cpu; cmd->se_cmd.tag = cmd->tag = scsi_tag; cmd->fu = fu; @@ -1092,49 +1357,81 @@ static struct usbg_cmd *usbg_get_cmd(struct f_uas *fu, static void usbg_release_cmd(struct se_cmd *); -static int usbg_submit_command(struct f_uas *fu, - void *cmdbuf, unsigned int len) +static int usbg_submit_command(struct f_uas *fu, struct usb_request *req) { - struct command_iu *cmd_iu = cmdbuf; + struct iu *iu = req->buf; struct usbg_cmd *cmd; struct usbg_tpg *tpg = fu->tpg; struct tcm_usbg_nexus *tv_nexus; + struct uas_stream *stream; + struct hlist_node *tmp; + struct command_iu *cmd_iu; u32 cmd_len; u16 scsi_tag; - if (cmd_iu->iu_id != IU_ID_COMMAND) { - pr_err("Unsupported type %d\n", cmd_iu->iu_id); - return -EINVAL; - } - tv_nexus = tpg->tpg_nexus; if (!tv_nexus) { pr_err("Missing nexus, ignoring command\n"); return -EINVAL; } - cmd_len = (cmd_iu->len & ~0x3) + 16; - if (cmd_len > USBG_MAX_CMD) - return -EINVAL; - - scsi_tag = be16_to_cpup(&cmd_iu->tag); + scsi_tag = be16_to_cpup(&iu->tag); cmd = usbg_get_cmd(fu, tv_nexus, scsi_tag); if (IS_ERR(cmd)) { pr_err("usbg_get_cmd failed\n"); return -ENOMEM; } - memcpy(cmd->cmd_buf, cmd_iu->cdb, cmd_len); - if (fu->flags & USBG_USE_STREAMS) { - if (cmd->tag > UASP_SS_EP_COMP_NUM_STREAMS) - goto err; - if (!cmd->tag) - cmd->stream = &fu->stream[0]; - else - cmd->stream = &fu->stream[cmd->tag - 1]; - } else { - cmd->stream = &fu->stream[0]; + cmd->req = req; + cmd->fu = fu; + cmd->tag = scsi_tag; + cmd->se_cmd.tag = scsi_tag; + cmd->tmr_func = 0; + cmd->tmr_rsp = RC_RESPONSE_UNKNOWN; + cmd->flags = 0; + + cmd_iu = (struct command_iu *)iu; + + /* Command and Task Management IUs share the same LUN offset */ + cmd->unpacked_lun = scsilun_to_int(&cmd_iu->lun); + + if (iu->iu_id != IU_ID_COMMAND && iu->iu_id != IU_ID_TASK_MGMT) { + cmd->tmr_rsp = RC_INVALID_INFO_UNIT; + goto skip; + } + + hash_for_each_possible_safe(fu->stream_hash, stream, tmp, node, scsi_tag) { + struct usbg_cmd *active_cmd; + struct se_session *se_sess; + int i = stream - &fu->stream[0]; + + se_sess = cmd->fu->tpg->tpg_nexus->tvn_se_sess; + active_cmd = &((struct usbg_cmd *)se_sess->sess_cmd_map)[i]; + + if (active_cmd->tag == scsi_tag) { + cmd->tmr_rsp = RC_OVERLAPPED_TAG; + goto skip; + } + } + + stream = &fu->stream[cmd->se_cmd.map_tag]; + hash_add(fu->stream_hash, &stream->node, scsi_tag); + + if (iu->iu_id == IU_ID_TASK_MGMT) { + struct task_mgmt_iu *tm_iu; + + tm_iu = (struct task_mgmt_iu *)iu; + cmd->tmr_func = tm_iu->function; + goto skip; + } + + cmd_len = (cmd_iu->len & ~0x3) + 16; + if (cmd_len > USBG_MAX_CMD) { + target_free_tag(tv_nexus->tvn_se_sess, &cmd->se_cmd); + hash_del(&stream->node); + return -EINVAL; } + memcpy(cmd->cmd_buf, cmd_iu->cdb, cmd_len); switch (cmd_iu->prio_attr & 0x7) { case UAS_HEAD_TAG: @@ -1155,15 +1452,11 @@ static int usbg_submit_command(struct f_uas *fu, break; } - cmd->unpacked_lun = scsilun_to_int(&cmd_iu->lun); - +skip: INIT_WORK(&cmd->work, usbg_cmd_work); queue_work(tpg->workqueue, &cmd->work); return 0; -err: - usbg_release_cmd(&cmd->se_cmd); - return -EINVAL; } static void bot_cmd_work(struct work_struct *work) @@ -1172,30 +1465,40 @@ static void bot_cmd_work(struct work_struct *work) struct se_cmd *se_cmd; struct tcm_usbg_nexus *tv_nexus; struct usbg_tpg *tpg; + int flags = TARGET_SCF_ACK_KREF; int dir; + /* + * Note: each command will spawn its own process, and each stage of the + * command is processed sequentially. Should this no longer be the case, + * locking is needed. + */ + if (cmd->flags & USBG_CMD_PENDING_DATA_WRITE) { + target_execute_cmd(&cmd->se_cmd); + cmd->flags &= ~USBG_CMD_PENDING_DATA_WRITE; + return; + } + se_cmd = &cmd->se_cmd; tpg = cmd->fu->tpg; tv_nexus = tpg->tpg_nexus; dir = get_cmd_dir(cmd->cmd_buf); - if (dir < 0) { - __target_init_cmd(se_cmd, - tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, - tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, - cmd->prio_attr, cmd->sense_iu.sense, - cmd->unpacked_lun, NULL); + if (dir < 0) goto out; - } target_submit_cmd(se_cmd, tv_nexus->tvn_se_sess, cmd->cmd_buf, cmd->sense_iu.sense, cmd->unpacked_lun, - cmd->data_len, cmd->prio_attr, dir, 0); + cmd->data_len, cmd->prio_attr, dir, flags); return; out: + __target_init_cmd(se_cmd, + tv_nexus->tvn_se_sess->se_tpg->se_tpg_tfo, + tv_nexus->tvn_se_sess, cmd->data_len, DMA_NONE, + cmd->prio_attr, cmd->sense_iu.sense, + cmd->unpacked_lun, NULL); transport_send_check_condition_and_sense(se_cmd, - TCM_UNSUPPORTED_SCSI_OPCODE, 1); - transport_generic_free_cmd(&cmd->se_cmd, 0); + TCM_UNSUPPORTED_SCSI_OPCODE, 0); } static int bot_submit_command(struct f_uas *fu, @@ -1239,6 +1542,7 @@ static int bot_submit_command(struct f_uas *fu, cmd->is_read = cbw->Flags & US_BULK_FLAG_IN ? 1 : 0; cmd->data_len = le32_to_cpu(cbw->DataTransferLength); cmd->se_cmd.tag = le32_to_cpu(cmd->bot_tag); + cmd->flags = 0; INIT_WORK(&cmd->work, bot_cmd_work); queue_work(tpg->workqueue, &cmd->work); @@ -1275,16 +1579,38 @@ static void usbg_release_cmd(struct se_cmd *se_cmd) se_cmd); struct se_session *se_sess = se_cmd->se_sess; + cmd->tag = 0; kfree(cmd->data_buf); target_free_tag(se_sess, se_cmd); } static void usbg_queue_tm_rsp(struct se_cmd *se_cmd) { + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, se_cmd); + + uasp_send_tm_response(cmd); } static void usbg_aborted_task(struct se_cmd *se_cmd) { + struct usbg_cmd *cmd = container_of(se_cmd, struct usbg_cmd, se_cmd); + struct f_uas *fu = cmd->fu; + struct usb_gadget *gadget = fuas_to_gadget(fu); + struct uas_stream *stream = &fu->stream[se_cmd->map_tag]; + int ret = 0; + + if (stream->req_out->status == -EINPROGRESS) + ret = usb_ep_dequeue(fu->ep_out, stream->req_out); + else if (stream->req_in->status == -EINPROGRESS) + ret = usb_ep_dequeue(fu->ep_in, stream->req_in); + else if (stream->req_status->status == -EINPROGRESS) + ret = usb_ep_dequeue(fu->ep_status, stream->req_status); + + if (ret) + dev_err(&gadget->dev, "Failed to abort cmd tag %d, (%d)\n", + cmd->tag, ret); + + cmd->state = UASP_QUEUE_COMMAND; } static const char *usbg_check_wwn(const char *name) @@ -1315,14 +1641,14 @@ static struct se_portal_group *usbg_make_tpg(struct se_wwn *wwn, struct usbg_tport *tport = container_of(wwn, struct usbg_tport, tport_wwn); struct usbg_tpg *tpg; - unsigned long tpgt; + u16 tpgt; int ret; struct f_tcm_opts *opts; unsigned i; if (strstr(name, "tpgt_") != name) return ERR_PTR(-EINVAL); - if (kstrtoul(name + 5, 0, &tpgt) || tpgt > UINT_MAX) + if (kstrtou16(name + 5, 0, &tpgt)) return ERR_PTR(-EINVAL); ret = -ENODEV; mutex_lock(&tpg_instances_lock); @@ -1355,7 +1681,8 @@ static struct se_portal_group *usbg_make_tpg(struct se_wwn *wwn, goto unref_dep; mutex_init(&tpg->tpg_mutex); atomic_set(&tpg->tpg_port_count, 0); - tpg->workqueue = alloc_workqueue("tcm_usb_gadget", 0, 1); + tpg->workqueue = alloc_workqueue("tcm_usb_gadget", + WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE); if (!tpg->workqueue) goto free_tpg; @@ -1504,8 +1831,8 @@ static ssize_t tcm_usbg_tpg_nexus_show(struct config_item *item, char *page) ret = -ENODEV; goto out; } - ret = snprintf(page, PAGE_SIZE, "%s\n", - tv_nexus->tvn_se_sess->se_node_acl->initiatorname); + ret = sysfs_emit(page, "%s\n", + tv_nexus->tvn_se_sess->se_node_acl->initiatorname); out: mutex_unlock(&tpg->tpg_mutex); return ret; @@ -1687,6 +2014,9 @@ static const struct target_core_fabric_ops usbg_ops = { .tfc_wwn_attrs = usbg_wwn_attrs, .tfc_tpg_base_attrs = usbg_base_attrs, + + .default_submit_type = TARGET_DIRECT_SUBMIT, + .direct_submit_supp = 1, }; /* Start gadget.c code */ @@ -1743,7 +2073,7 @@ static struct usb_endpoint_descriptor uasp_ss_bi_desc = { static struct usb_ss_ep_comp_descriptor uasp_bi_ep_comp_desc = { .bLength = sizeof(uasp_bi_ep_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, - .bMaxBurst = 0, + .bMaxBurst = 15, .bmAttributes = UASP_SS_EP_COMP_LOG_STREAMS, .wBytesPerInterval = 0, }; @@ -1751,7 +2081,7 @@ static struct usb_ss_ep_comp_descriptor uasp_bi_ep_comp_desc = { static struct usb_ss_ep_comp_descriptor bot_bi_ep_comp_desc = { .bLength = sizeof(bot_bi_ep_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, - .bMaxBurst = 0, + .bMaxBurst = 15, }; static struct usb_endpoint_descriptor uasp_bo_desc = { @@ -1786,12 +2116,14 @@ static struct usb_endpoint_descriptor uasp_ss_bo_desc = { static struct usb_ss_ep_comp_descriptor uasp_bo_ep_comp_desc = { .bLength = sizeof(uasp_bo_ep_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 15, .bmAttributes = UASP_SS_EP_COMP_LOG_STREAMS, }; static struct usb_ss_ep_comp_descriptor bot_bo_ep_comp_desc = { .bLength = sizeof(bot_bo_ep_comp_desc), .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 15, }; static struct usb_endpoint_descriptor uasp_status_desc = { @@ -1968,43 +2300,39 @@ static int tcm_bind(struct usb_configuration *c, struct usb_function *f) bot_intf_desc.bInterfaceNumber = iface; uasp_intf_desc.bInterfaceNumber = iface; fu->iface = iface; - ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_bi_desc, - &uasp_bi_ep_comp_desc); + ep = usb_ep_autoconfig(gadget, &uasp_fs_bi_desc); if (!ep) goto ep_fail; fu->ep_in = ep; - ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_bo_desc, - &uasp_bo_ep_comp_desc); + ep = usb_ep_autoconfig(gadget, &uasp_fs_bo_desc); if (!ep) goto ep_fail; fu->ep_out = ep; - ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_status_desc, - &uasp_status_in_ep_comp_desc); + ep = usb_ep_autoconfig(gadget, &uasp_fs_status_desc); if (!ep) goto ep_fail; fu->ep_status = ep; - ep = usb_ep_autoconfig_ss(gadget, &uasp_ss_cmd_desc, - &uasp_cmd_comp_desc); + ep = usb_ep_autoconfig(gadget, &uasp_fs_cmd_desc); if (!ep) goto ep_fail; fu->ep_cmd = ep; /* Assume endpoint addresses are the same for both speeds */ - uasp_bi_desc.bEndpointAddress = uasp_ss_bi_desc.bEndpointAddress; - uasp_bo_desc.bEndpointAddress = uasp_ss_bo_desc.bEndpointAddress; + uasp_bi_desc.bEndpointAddress = uasp_fs_bi_desc.bEndpointAddress; + uasp_bo_desc.bEndpointAddress = uasp_fs_bo_desc.bEndpointAddress; uasp_status_desc.bEndpointAddress = - uasp_ss_status_desc.bEndpointAddress; - uasp_cmd_desc.bEndpointAddress = uasp_ss_cmd_desc.bEndpointAddress; + uasp_fs_status_desc.bEndpointAddress; + uasp_cmd_desc.bEndpointAddress = uasp_fs_cmd_desc.bEndpointAddress; - uasp_fs_bi_desc.bEndpointAddress = uasp_ss_bi_desc.bEndpointAddress; - uasp_fs_bo_desc.bEndpointAddress = uasp_ss_bo_desc.bEndpointAddress; - uasp_fs_status_desc.bEndpointAddress = - uasp_ss_status_desc.bEndpointAddress; - uasp_fs_cmd_desc.bEndpointAddress = uasp_ss_cmd_desc.bEndpointAddress; + uasp_ss_bi_desc.bEndpointAddress = uasp_fs_bi_desc.bEndpointAddress; + uasp_ss_bo_desc.bEndpointAddress = uasp_fs_bo_desc.bEndpointAddress; + uasp_ss_status_desc.bEndpointAddress = + uasp_fs_status_desc.bEndpointAddress; + uasp_ss_cmd_desc.bEndpointAddress = uasp_fs_cmd_desc.bEndpointAddress; ret = usb_assign_descriptors(f, uasp_fs_function_desc, uasp_hs_function_desc, uasp_ss_function_desc, @@ -2048,9 +2376,14 @@ static void tcm_delayed_set_alt(struct work_struct *wq) static int tcm_get_alt(struct usb_function *f, unsigned intf) { - if (intf == bot_intf_desc.bInterfaceNumber) + struct f_uas *fu = to_f_uas(f); + + if (fu->iface != intf) + return -EOPNOTSUPP; + + if (fu->flags & USBG_IS_BOT) return USB_G_ALT_INT_BBB; - if (intf == uasp_intf_desc.bInterfaceNumber) + else if (fu->flags & USBG_IS_UAS) return USB_G_ALT_INT_UAS; return -EOPNOTSUPP; @@ -2060,6 +2393,9 @@ static int tcm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) { struct f_uas *fu = to_f_uas(f); + if (fu->iface != intf) + return -EOPNOTSUPP; + if ((alt == USB_G_ALT_INT_BBB) || (alt == USB_G_ALT_INT_UAS)) { struct guas_setup_wq *work; @@ -2268,6 +2604,8 @@ static struct usb_function *tcm_alloc(struct usb_function_instance *fi) fu->function.disable = tcm_disable; fu->function.free_func = tcm_free; fu->tpg = tpg_instances[i].tpg; + + hash_init(fu->stream_hash); mutex_unlock(&tpg_instances_lock); return &fu->function; @@ -2298,5 +2636,6 @@ static void __exit tcm_exit(void) } module_exit(tcm_exit); +MODULE_DESCRIPTION("Target based USB-Gadget"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Sebastian Andrzej Siewior"); diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 6f0e1d803dc2..9da9fb4e1239 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -292,6 +292,77 @@ static struct usb_descriptor_header *f_audio_desc[] = { NULL, }; +/* Standard ISO OUT Endpoint Descriptor */ +static struct usb_endpoint_descriptor ss_as_out_ep_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_SYNC_ADAPTIVE + | USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE), + .bInterval = 4, +}; + +static struct usb_ss_ep_comp_descriptor ss_as_out_ep_desc_comp = { + .bLength = sizeof(ss_as_out_ep_desc_comp), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, + .bmAttributes = 0, + /* wBytesPerInterval = DYNAMIC */ +}; + +/* Standard ISO OUT Endpoint Descriptor */ +static struct usb_endpoint_descriptor ss_as_in_ep_desc = { + .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_SYNC_ASYNC + | USB_ENDPOINT_XFER_ISOC, + .wMaxPacketSize = cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE), + .bInterval = 4, +}; + +static struct usb_ss_ep_comp_descriptor ss_as_in_ep_desc_comp = { + .bLength = sizeof(ss_as_in_ep_desc_comp), + .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, + .bMaxBurst = 0, + .bmAttributes = 0, + /* wBytesPerInterval = DYNAMIC */ +}; + +static struct usb_descriptor_header *f_audio_ss_desc[] = { + (struct usb_descriptor_header *)&ac_interface_desc, + (struct usb_descriptor_header *)&ac_header_desc, + + (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&io_in_it_desc, + (struct usb_descriptor_header *)&usb_in_ot_desc, + + (struct usb_descriptor_header *)&as_out_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_out_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_out_header_desc, + + (struct usb_descriptor_header *)&as_out_type_i_desc, + + //(struct usb_descriptor_header *)&as_out_ep_desc, + (struct usb_descriptor_header *)&ss_as_out_ep_desc, + (struct usb_descriptor_header *)&ss_as_out_ep_desc_comp, + (struct usb_descriptor_header *)&as_iso_out_desc, + + (struct usb_descriptor_header *)&as_in_interface_alt_0_desc, + (struct usb_descriptor_header *)&as_in_interface_alt_1_desc, + (struct usb_descriptor_header *)&as_in_header_desc, + + (struct usb_descriptor_header *)&as_in_type_i_desc, + + //(struct usb_descriptor_header *)&as_in_ep_desc, + (struct usb_descriptor_header *)&ss_as_in_ep_desc, + (struct usb_descriptor_header *)&ss_as_in_ep_desc_comp, + (struct usb_descriptor_header *)&as_iso_in_desc, + NULL, +}; + enum { STR_AC_IF, STR_USB_OUT_IT, @@ -306,24 +377,10 @@ enum { STR_AS_OUT_IF_ALT1, STR_AS_IN_IF_ALT0, STR_AS_IN_IF_ALT1, + NUM_STR_DESCRIPTORS, }; -static struct usb_string strings_uac1[] = { - /* [STR_AC_IF].s = DYNAMIC, */ - [STR_USB_OUT_IT].s = "Playback Input terminal", - [STR_USB_OUT_IT_CH_NAMES].s = "Playback Channels", - [STR_IO_OUT_OT].s = "Playback Output terminal", - [STR_IO_IN_IT].s = "Capture Input terminal", - [STR_IO_IN_IT_CH_NAMES].s = "Capture Channels", - [STR_USB_IN_OT].s = "Capture Output terminal", - [STR_FU_IN].s = "Capture Volume", - [STR_FU_OUT].s = "Playback Volume", - [STR_AS_OUT_IF_ALT0].s = "Playback Inactive", - [STR_AS_OUT_IF_ALT1].s = "Playback Active", - [STR_AS_IN_IF_ALT0].s = "Capture Inactive", - [STR_AS_IN_IF_ALT1].s = "Capture Active", - { }, -}; +static struct usb_string strings_uac1[NUM_STR_DESCRIPTORS + 1] = {}; static struct usb_gadget_strings str_uac1 = { .language = 0x0409, /* en-us */ @@ -1194,6 +1251,20 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) strings_uac1[STR_AC_IF].s = audio_opts->function_name; + strings_uac1[STR_USB_OUT_IT].s = audio_opts->c_it_name; + strings_uac1[STR_USB_OUT_IT_CH_NAMES].s = audio_opts->c_it_ch_name; + strings_uac1[STR_IO_OUT_OT].s = audio_opts->c_ot_name; + strings_uac1[STR_FU_OUT].s = audio_opts->c_fu_vol_name; + strings_uac1[STR_AS_OUT_IF_ALT0].s = "Playback Inactive"; + strings_uac1[STR_AS_OUT_IF_ALT1].s = "Playback Active"; + + strings_uac1[STR_IO_IN_IT].s = audio_opts->p_it_name; + strings_uac1[STR_IO_IN_IT_CH_NAMES].s = audio_opts->p_it_ch_name; + strings_uac1[STR_USB_IN_OT].s = audio_opts->p_ot_name; + strings_uac1[STR_FU_IN].s = audio_opts->p_fu_vol_name; + strings_uac1[STR_AS_IN_IF_ALT0].s = "Capture Inactive"; + strings_uac1[STR_AS_IN_IF_ALT1].s = "Capture Active"; + us = usb_gstrings_attach(cdev, uac1_strings, ARRAY_SIZE(strings_uac1)); if (IS_ERR(us)) return PTR_ERR(us); @@ -1352,6 +1423,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_desc); if (!ep) goto err_free_fu; + ss_as_out_ep_desc.bEndpointAddress = as_out_ep_desc.bEndpointAddress; audio->out_ep = ep; audio->out_ep->desc = &as_out_ep_desc; } @@ -1360,6 +1432,7 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) ep = usb_ep_autoconfig(cdev->gadget, &as_in_ep_desc); if (!ep) goto err_free_fu; + ss_as_in_ep_desc.bEndpointAddress = as_in_ep_desc.bEndpointAddress; audio->in_ep = ep; audio->in_ep->desc = &as_in_ep_desc; } @@ -1367,8 +1440,8 @@ static int f_audio_bind(struct usb_configuration *c, struct usb_function *f) setup_descriptor(audio_opts); /* copy descriptors, and track endpoint copies */ - status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, NULL, - NULL); + status = usb_assign_descriptors(f, f_audio_desc, f_audio_desc, f_audio_ss_desc, + f_audio_ss_desc); if (status) goto err_free_fu; @@ -1561,7 +1634,7 @@ static ssize_t f_uac1_opts_##name##_show(struct config_item *item, \ int result; \ \ mutex_lock(&opts->lock); \ - result = snprintf(page, sizeof(opts->name), "%s", opts->name); \ + result = sysfs_emit(page, "%s", opts->name); \ mutex_unlock(&opts->lock); \ \ return result; \ @@ -1579,7 +1652,7 @@ static ssize_t f_uac1_opts_##name##_store(struct config_item *item, \ goto end; \ } \ \ - ret = snprintf(opts->name, min(sizeof(opts->name), len), \ + ret = scnprintf(opts->name, min(sizeof(opts->name), len), \ "%s", page); \ \ end: \ @@ -1608,8 +1681,19 @@ UAC1_ATTRIBUTE(bool, c_volume_present); UAC1_ATTRIBUTE(s16, c_volume_min); UAC1_ATTRIBUTE(s16, c_volume_max); UAC1_ATTRIBUTE(s16, c_volume_res); + UAC1_ATTRIBUTE_STRING(function_name); +UAC1_ATTRIBUTE_STRING(p_it_name); +UAC1_ATTRIBUTE_STRING(p_it_ch_name); +UAC1_ATTRIBUTE_STRING(p_ot_name); +UAC1_ATTRIBUTE_STRING(p_fu_vol_name); + +UAC1_ATTRIBUTE_STRING(c_it_name); +UAC1_ATTRIBUTE_STRING(c_it_ch_name); +UAC1_ATTRIBUTE_STRING(c_ot_name); +UAC1_ATTRIBUTE_STRING(c_fu_vol_name); + static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_c_chmask, &f_uac1_opts_attr_c_srate, @@ -1633,6 +1717,16 @@ static struct configfs_attribute *f_uac1_attrs[] = { &f_uac1_opts_attr_function_name, + &f_uac1_opts_attr_p_it_name, + &f_uac1_opts_attr_p_it_ch_name, + &f_uac1_opts_attr_p_ot_name, + &f_uac1_opts_attr_p_fu_vol_name, + + &f_uac1_opts_attr_c_it_name, + &f_uac1_opts_attr_c_it_ch_name, + &f_uac1_opts_attr_c_ot_name, + &f_uac1_opts_attr_c_fu_vol_name, + NULL, }; @@ -1685,7 +1779,17 @@ static struct usb_function_instance *f_audio_alloc_inst(void) opts->req_number = UAC1_DEF_REQ_NUM; - snprintf(opts->function_name, sizeof(opts->function_name), "AC Interface"); + scnprintf(opts->function_name, sizeof(opts->function_name), "AC Interface"); + + scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "Capture Input terminal"); + scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Capture Channels"); + scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "Capture Output terminal"); + scnprintf(opts->p_fu_vol_name, sizeof(opts->p_fu_vol_name), "Capture Volume"); + + scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "Playback Input terminal"); + scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Playback Channels"); + scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "Playback Output terminal"); + scnprintf(opts->c_fu_vol_name, sizeof(opts->c_fu_vol_name), "Playback Volume"); return &opts->func_inst; } @@ -1750,5 +1854,6 @@ static struct usb_function *f_audio_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(uac1, f_audio_alloc_inst, f_audio_alloc); +MODULE_DESCRIPTION("USB Audio Class 1.0 Function (using u_audio API)"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Ruslan Bilovol"); diff --git a/drivers/usb/gadget/function/f_uac1_legacy.c b/drivers/usb/gadget/function/f_uac1_legacy.c index e2d7f69128a0..49cf5aae90ca 100644 --- a/drivers/usb/gadget/function/f_uac1_legacy.c +++ b/drivers/usb/gadget/function/f_uac1_legacy.c @@ -1014,5 +1014,6 @@ static struct usb_function *f_audio_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(uac1_legacy, f_audio_alloc_inst, f_audio_alloc); +MODULE_DESCRIPTION("USB Audio class function driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Bryan Wu"); diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 0219cd79493a..dd252ff2fb4e 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -95,7 +95,9 @@ enum { STR_CLKSRC_IN, STR_CLKSRC_OUT, STR_USB_IT, + STR_USB_IT_CH, STR_IO_IT, + STR_IO_IT_CH, STR_USB_OT, STR_IO_OT, STR_FU_IN, @@ -104,25 +106,10 @@ enum { STR_AS_OUT_ALT1, STR_AS_IN_ALT0, STR_AS_IN_ALT1, + NUM_STR_DESCRIPTORS, }; -static struct usb_string strings_fn[] = { - /* [STR_ASSOC].s = DYNAMIC, */ - [STR_IF_CTRL].s = "Topology Control", - [STR_CLKSRC_IN].s = "Input Clock", - [STR_CLKSRC_OUT].s = "Output Clock", - [STR_USB_IT].s = "USBH Out", - [STR_IO_IT].s = "USBD Out", - [STR_USB_OT].s = "USBH In", - [STR_IO_OT].s = "USBD In", - [STR_FU_IN].s = "Capture Volume", - [STR_FU_OUT].s = "Playback Volume", - [STR_AS_OUT_ALT0].s = "Playback Inactive", - [STR_AS_OUT_ALT1].s = "Playback Active", - [STR_AS_IN_ALT0].s = "Capture Inactive", - [STR_AS_IN_ALT1].s = "Capture Active", - { }, -}; +static struct usb_string strings_fn[NUM_STR_DESCRIPTORS + 1] = {}; static const char *const speed_names[] = { [USB_SPEED_UNKNOWN] = "UNKNOWN", @@ -212,7 +199,7 @@ static struct uac2_input_terminal_descriptor io_in_it_desc = { .bDescriptorSubtype = UAC_INPUT_TERMINAL, /* .bTerminalID = DYNAMIC */ - .wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_MICROPHONE), + /* .wTerminalType = DYNAMIC */ .bAssocTerminal = 0, /* .bCSourceID = DYNAMIC */ .iChannelNames = 0, @@ -240,7 +227,7 @@ static struct uac2_output_terminal_descriptor io_out_ot_desc = { .bDescriptorSubtype = UAC_OUTPUT_TERMINAL, /* .bTerminalID = DYNAMIC */ - .wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_SPEAKER), + /* .wTerminalType = DYNAMIC */ .bAssocTerminal = 0, /* .bSourceID = DYNAMIC */ /* .bCSourceID = DYNAMIC */ @@ -977,6 +964,9 @@ static void setup_descriptor(struct f_uac2_opts *opts) iad_desc.bInterfaceCount++; } + io_in_it_desc.wTerminalType = cpu_to_le16(opts->c_terminal_type); + io_out_ot_desc.wTerminalType = cpu_to_le16(opts->p_terminal_type); + setup_headers(opts, fs_audio_desc, USB_SPEED_FULL); setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH); setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER); @@ -1046,6 +1036,23 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) return ret; strings_fn[STR_ASSOC].s = uac2_opts->function_name; + strings_fn[STR_IF_CTRL].s = uac2_opts->if_ctrl_name; + strings_fn[STR_CLKSRC_IN].s = uac2_opts->clksrc_in_name; + strings_fn[STR_CLKSRC_OUT].s = uac2_opts->clksrc_out_name; + + strings_fn[STR_USB_IT].s = uac2_opts->c_it_name; + strings_fn[STR_USB_IT_CH].s = uac2_opts->c_it_ch_name; + strings_fn[STR_IO_OT].s = uac2_opts->c_ot_name; + strings_fn[STR_FU_OUT].s = uac2_opts->c_fu_vol_name; + strings_fn[STR_AS_OUT_ALT0].s = "Playback Inactive"; + strings_fn[STR_AS_OUT_ALT1].s = "Playback Active"; + + strings_fn[STR_IO_IT].s = uac2_opts->p_it_name; + strings_fn[STR_IO_IT_CH].s = uac2_opts->p_it_ch_name; + strings_fn[STR_USB_OT].s = uac2_opts->p_ot_name; + strings_fn[STR_FU_IN].s = uac2_opts->p_fu_vol_name; + strings_fn[STR_AS_IN_ALT0].s = "Capture Inactive"; + strings_fn[STR_AS_IN_ALT1].s = "Capture Active"; us = usb_gstrings_attach(cdev, fn_strings, ARRAY_SIZE(strings_fn)); if (IS_ERR(us)) @@ -1069,7 +1076,9 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) in_clk_src_desc.iClockSource = us[STR_CLKSRC_IN].id; out_clk_src_desc.iClockSource = us[STR_CLKSRC_OUT].id; usb_out_it_desc.iTerminal = us[STR_USB_IT].id; + usb_out_it_desc.iChannelNames = us[STR_USB_IT_CH].id; io_in_it_desc.iTerminal = us[STR_IO_IT].id; + io_in_it_desc.iChannelNames = us[STR_IO_IT_CH].id; usb_in_ot_desc.iTerminal = us[STR_USB_OT].id; io_out_ot_desc.iTerminal = us[STR_IO_OT].id; std_as_out_if0_desc.iInterface = us[STR_AS_OUT_ALT0].id; @@ -1176,6 +1185,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) uac2->as_in_alt = 0; } + std_ac_if_desc.bNumEndpoints = 0; if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) { uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc); if (!uac2->int_ep) { @@ -2042,7 +2052,7 @@ static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \ int result; \ \ mutex_lock(&opts->lock); \ - result = snprintf(page, sizeof(opts->name), "%s", opts->name); \ + result = sysfs_emit(page, "%s", opts->name); \ mutex_unlock(&opts->lock); \ \ return result; \ @@ -2052,7 +2062,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ const char *page, size_t len) \ { \ struct f_uac2_opts *opts = to_f_uac2_opts(item); \ - int ret = 0; \ + int ret = len; \ \ mutex_lock(&opts->lock); \ if (opts->refcnt) { \ @@ -2060,8 +2070,11 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ goto end; \ } \ \ - ret = snprintf(opts->name, min(sizeof(opts->name), len), \ - "%s", page); \ + if (len && page[len - 1] == '\n') \ + len--; \ + \ + scnprintf(opts->name, min(sizeof(opts->name), len + 1), \ + "%s", page); \ \ end: \ mutex_unlock(&opts->lock); \ @@ -2094,6 +2107,23 @@ UAC2_ATTRIBUTE(s16, c_volume_max); UAC2_ATTRIBUTE(s16, c_volume_res); UAC2_ATTRIBUTE(u32, fb_max); UAC2_ATTRIBUTE_STRING(function_name); +UAC2_ATTRIBUTE_STRING(if_ctrl_name); +UAC2_ATTRIBUTE_STRING(clksrc_in_name); +UAC2_ATTRIBUTE_STRING(clksrc_out_name); + +UAC2_ATTRIBUTE_STRING(p_it_name); +UAC2_ATTRIBUTE_STRING(p_it_ch_name); +UAC2_ATTRIBUTE_STRING(p_ot_name); +UAC2_ATTRIBUTE_STRING(p_fu_vol_name); + +UAC2_ATTRIBUTE_STRING(c_it_name); +UAC2_ATTRIBUTE_STRING(c_it_ch_name); +UAC2_ATTRIBUTE_STRING(c_ot_name); +UAC2_ATTRIBUTE_STRING(c_fu_vol_name); + +UAC2_ATTRIBUTE(s16, p_terminal_type); +UAC2_ATTRIBUTE(s16, c_terminal_type); + static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_p_chmask, @@ -2121,6 +2151,22 @@ static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_c_volume_res, &f_uac2_opts_attr_function_name, + &f_uac2_opts_attr_if_ctrl_name, + &f_uac2_opts_attr_clksrc_in_name, + &f_uac2_opts_attr_clksrc_out_name, + + &f_uac2_opts_attr_p_it_name, + &f_uac2_opts_attr_p_it_ch_name, + &f_uac2_opts_attr_p_ot_name, + &f_uac2_opts_attr_p_fu_vol_name, + + &f_uac2_opts_attr_c_it_name, + &f_uac2_opts_attr_c_it_ch_name, + &f_uac2_opts_attr_c_ot_name, + &f_uac2_opts_attr_c_fu_vol_name, + + &f_uac2_opts_attr_p_terminal_type, + &f_uac2_opts_attr_c_terminal_type, NULL, }; @@ -2178,7 +2224,23 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->req_number = UAC2_DEF_REQ_NUM; opts->fb_max = FBACK_FAST_MAX; - snprintf(opts->function_name, sizeof(opts->function_name), "Source/Sink"); + scnprintf(opts->function_name, sizeof(opts->function_name), "Source/Sink"); + scnprintf(opts->if_ctrl_name, sizeof(opts->if_ctrl_name), "Topology Control"); + scnprintf(opts->clksrc_in_name, sizeof(opts->clksrc_in_name), "Input Clock"); + scnprintf(opts->clksrc_out_name, sizeof(opts->clksrc_out_name), "Output Clock"); + + scnprintf(opts->p_it_name, sizeof(opts->p_it_name), "USBD Out"); + scnprintf(opts->p_it_ch_name, sizeof(opts->p_it_ch_name), "Capture Channels"); + scnprintf(opts->p_ot_name, sizeof(opts->p_ot_name), "USBH In"); + scnprintf(opts->p_fu_vol_name, sizeof(opts->p_fu_vol_name), "Capture Volume"); + + scnprintf(opts->c_it_name, sizeof(opts->c_it_name), "USBH Out"); + scnprintf(opts->c_it_ch_name, sizeof(opts->c_it_ch_name), "Playback Channels"); + scnprintf(opts->c_ot_name, sizeof(opts->c_ot_name), "USBD In"); + scnprintf(opts->c_fu_vol_name, sizeof(opts->c_fu_vol_name), "Playback Volume"); + + opts->p_terminal_type = UAC2_DEF_P_TERM_TYPE; + opts->c_terminal_type = UAC2_DEF_C_TERM_TYPE; return &opts->func_inst; } @@ -2239,6 +2301,7 @@ static struct usb_function *afunc_alloc(struct usb_function_instance *fi) } DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc); +MODULE_DESCRIPTION("USB Audio Class 2.0 Function"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yadwinder Singh"); MODULE_AUTHOR("Jaswinder Singh"); diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index 5e919fb65833..aa6ab666741a 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -263,10 +263,13 @@ uvc_function_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) return 0; } -void uvc_function_setup_continue(struct uvc_device *uvc) +void uvc_function_setup_continue(struct uvc_device *uvc, int disable_ep) { struct usb_composite_dev *cdev = uvc->func.config->cdev; + if (disable_ep && uvc->video.ep) + usb_ep_disable(uvc->video.ep); + usb_composite_setup_continue(cdev); } @@ -337,15 +340,11 @@ uvc_function_set_alt(struct usb_function *f, unsigned interface, unsigned alt) if (uvc->state != UVC_STATE_STREAMING) return 0; - if (uvc->video.ep) - usb_ep_disable(uvc->video.ep); - memset(&v4l2_event, 0, sizeof(v4l2_event)); v4l2_event.type = UVC_EVENT_STREAMOFF; v4l2_event_queue(&uvc->vdev, &v4l2_event); - uvc->state = UVC_STATE_CONNECTED; - return 0; + return USB_GADGET_DELAYED_STATUS; case 1: if (uvc->state != UVC_STATE_CONNECTED) @@ -466,7 +465,7 @@ uvc_register_video(struct uvc_device *uvc) memcpy(mem, desc, (desc)->bLength); \ *(dst)++ = mem; \ mem += (desc)->bLength; \ - } while (0); + } while (0) #define UVC_COPY_DESCRIPTORS(mem, dst, src) \ do { \ @@ -516,6 +515,7 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) void *mem; switch (speed) { + case USB_SPEED_SUPER_PLUS: case USB_SPEED_SUPER: uvc_control_desc = uvc->desc.ss_control; uvc_streaming_cls = uvc->desc.ss_streaming; @@ -564,7 +564,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) bytes += uvc_interrupt_ep.bLength + uvc_interrupt_cs_ep.bLength; n_desc += 2; - if (speed == USB_SPEED_SUPER) { + if (speed == USB_SPEED_SUPER || + speed == USB_SPEED_SUPER_PLUS) { bytes += uvc_ss_interrupt_comp.bLength; n_desc += 1; } @@ -619,7 +620,8 @@ uvc_copy_descriptors(struct uvc_device *uvc, enum usb_device_speed speed) if (uvc->enable_interrupt_ep) { UVC_COPY_DESCRIPTOR(mem, dst, &uvc_interrupt_ep); - if (speed == USB_SPEED_SUPER) + if (speed == USB_SPEED_SUPER || + speed == USB_SPEED_SUPER_PLUS) UVC_COPY_DESCRIPTOR(mem, dst, &uvc_ss_interrupt_comp); UVC_COPY_DESCRIPTOR(mem, dst, &uvc_interrupt_cs_ep); @@ -719,6 +721,14 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) } uvc->enable_interrupt_ep = opts->enable_interrupt_ep; + /* + * gadget_is_{super|dual}speed() API check UDC controller capitblity. It should pass down + * highest speed endpoint descriptor to UDC controller. So UDC controller driver can reserve + * enough resource at check_config(), especially mult and maxburst. So UDC driver (such as + * cdns3) can know need at least (mult + 1) * (maxburst + 1) * wMaxPacketSize internal + * memory for this uvc functions. This is the only straightforward method to resolve the UDC + * resource allocation issue in the current gadget framework. + */ if (gadget_is_superspeed(c->cdev->gadget)) ep = usb_ep_autoconfig_ss(cdev->gadget, &uvc_ss_streaming_ep, &uvc_ss_streaming_comp); @@ -788,21 +798,26 @@ uvc_function_bind(struct usb_configuration *c, struct usb_function *f) f->fs_descriptors = NULL; goto error; } - if (gadget_is_dualspeed(cdev->gadget)) { - f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); - if (IS_ERR(f->hs_descriptors)) { - ret = PTR_ERR(f->hs_descriptors); - f->hs_descriptors = NULL; - goto error; - } + + f->hs_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_HIGH); + if (IS_ERR(f->hs_descriptors)) { + ret = PTR_ERR(f->hs_descriptors); + f->hs_descriptors = NULL; + goto error; } - if (gadget_is_superspeed(c->cdev->gadget)) { - f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER); - if (IS_ERR(f->ss_descriptors)) { - ret = PTR_ERR(f->ss_descriptors); - f->ss_descriptors = NULL; - goto error; - } + + f->ss_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER); + if (IS_ERR(f->ss_descriptors)) { + ret = PTR_ERR(f->ss_descriptors); + f->ss_descriptors = NULL; + goto error; + } + + f->ssp_descriptors = uvc_copy_descriptors(uvc, USB_SPEED_SUPER_PLUS); + if (IS_ERR(f->ssp_descriptors)) { + ret = PTR_ERR(f->ssp_descriptors); + f->ssp_descriptors = NULL; + goto error; } /* Preallocate control endpoint request. */ @@ -960,7 +975,8 @@ static void uvc_free(struct usb_function *f) struct uvc_device *uvc = to_uvc(f); struct f_uvc_opts *opts = container_of(f->fi, struct f_uvc_opts, func_inst); - config_item_put(&uvc->header->item); + if (!opts->header) + config_item_put(&uvc->header->item); --opts->refcnt; kfree(uvc); } @@ -975,6 +991,8 @@ static void uvc_function_unbind(struct usb_configuration *c, uvcg_info(f, "%s()\n", __func__); + kthread_cancel_work_sync(&video->hw_submit); + if (video->async_wq) destroy_workqueue(video->async_wq); @@ -1052,25 +1070,29 @@ static struct usb_function *uvc_alloc(struct usb_function_instance *fi) uvc->desc.hs_streaming = opts->hs_streaming; uvc->desc.ss_streaming = opts->ss_streaming; - streaming = config_group_find_item(&opts->func_inst.group, "streaming"); - if (!streaming) - goto err_config; - - header = config_group_find_item(to_config_group(streaming), "header"); - config_item_put(streaming); - if (!header) - goto err_config; - - h = config_group_find_item(to_config_group(header), "h"); - config_item_put(header); - if (!h) - goto err_config; - - uvc->header = to_uvcg_streaming_header(h); - if (!uvc->header->linked) { - mutex_unlock(&opts->lock); - kfree(uvc); - return ERR_PTR(-EBUSY); + if (opts->header) { + uvc->header = opts->header; + } else { + streaming = config_group_find_item(&opts->func_inst.group, "streaming"); + if (!streaming) + goto err_config; + + header = config_group_find_item(to_config_group(streaming), "header"); + config_item_put(streaming); + if (!header) + goto err_config; + + h = config_group_find_item(to_config_group(header), "h"); + config_item_put(header); + if (!h) + goto err_config; + + uvc->header = to_uvcg_streaming_header(h); + if (!uvc->header->linked) { + mutex_unlock(&opts->lock); + kfree(uvc); + return ERR_PTR(-EBUSY); + } } uvc->desc.extension_units = &opts->extension_units; @@ -1098,5 +1120,6 @@ err_config: } DECLARE_USB_FUNCTION_INIT(uvc, uvc_alloc_inst, uvc_alloc); +MODULE_DESCRIPTION("USB Video Class Gadget driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Laurent Pinchart"); diff --git a/drivers/usb/gadget/function/f_uvc.h b/drivers/usb/gadget/function/f_uvc.h index 1db972d4beeb..083aef0c65c6 100644 --- a/drivers/usb/gadget/function/f_uvc.h +++ b/drivers/usb/gadget/function/f_uvc.h @@ -11,7 +11,7 @@ struct uvc_device; -void uvc_function_setup_continue(struct uvc_device *uvc); +void uvc_function_setup_continue(struct uvc_device *uvc, int disable_ep); void uvc_function_connect(struct uvc_device *uvc); diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c index 29bf8664bf58..afd75d72412c 100644 --- a/drivers/usb/gadget/function/rndis.c +++ b/drivers/usb/gadget/function/rndis.c @@ -31,7 +31,7 @@ #include <asm/io.h> #include <asm/byteorder.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "u_rndis.h" @@ -869,12 +869,12 @@ EXPORT_SYMBOL_GPL(rndis_msg_parser); static inline int rndis_get_nr(void) { - return ida_simple_get(&rndis_ida, 0, 1000, GFP_KERNEL); + return ida_alloc_max(&rndis_ida, 999, GFP_KERNEL); } static inline void rndis_put_nr(int nr) { - ida_simple_remove(&rndis_ida, nr); + ida_free(&rndis_ida, nr); } struct rndis_params *rndis_register(void (*resp_avail)(void *v), void *v) diff --git a/drivers/usb/gadget/function/storage_common.c b/drivers/usb/gadget/function/storage_common.c index 2a4163b0f6fe..75831f2c7abe 100644 --- a/drivers/usb/gadget/function/storage_common.c +++ b/drivers/usb/gadget/function/storage_common.c @@ -537,4 +537,5 @@ ssize_t fsg_store_forced_eject(struct fsg_lun *curlun, struct rw_semaphore *file } EXPORT_SYMBOL_GPL(fsg_store_forced_eject); +MODULE_DESCRIPTION("Common definitions for mass storage functionality"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/storage_common.h b/drivers/usb/gadget/function/storage_common.h index 0a544a82cbf8..11ac785d5eee 100644 --- a/drivers/usb/gadget/function/storage_common.h +++ b/drivers/usb/gadget/function/storage_common.h @@ -5,7 +5,7 @@ #include <linux/device.h> #include <linux/usb/storage.h> #include <scsi/scsi.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #ifndef DEBUG #undef VERBOSE_DEBUG @@ -131,7 +131,7 @@ static inline bool fsg_lun_is_open(struct fsg_lun *curlun) #define FSG_BUFLEN ((u32)16384) /* Maximal number of LUNs supported in mass storage function */ -#define FSG_MAX_LUNS 16 +#define FSG_MAX_LUNS (US_BULK_MAX_LUN_LIMIT + 1) enum fsg_buffer_state { BUF_STATE_SENDING = -2, diff --git a/drivers/usb/gadget/function/tcm.h b/drivers/usb/gadget/function/tcm.h index 3cd565794ad7..009974d81d66 100644 --- a/drivers/usb/gadget/function/tcm.h +++ b/drivers/usb/gadget/function/tcm.h @@ -4,6 +4,7 @@ #include <linux/kref.h> /* #include <linux/usb/uas.h> */ +#include <linux/hashtable.h> #include <linux/usb/composite.h> #include <linux/usb/uas.h> #include <linux/usb/storage.h> @@ -13,9 +14,11 @@ #define USBG_NAMELEN 32 #define fuas_to_gadget(f) (f->function.config->cdev->gadget) -#define UASP_SS_EP_COMP_LOG_STREAMS 4 +#define UASP_SS_EP_COMP_LOG_STREAMS 5 #define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS) +#define USBG_NUM_CMDS (UASP_SS_EP_COMP_NUM_STREAMS + 1) + enum { USB_G_STR_INT_UAS = 0, USB_G_STR_INT_BBB, @@ -24,7 +27,7 @@ enum { #define USB_G_ALT_INT_BBB 0 #define USB_G_ALT_INT_UAS 1 -#define USB_G_DEFAULT_SESSION_TAGS 128 +#define USB_G_DEFAULT_SESSION_TAGS USBG_NUM_CMDS struct tcm_usbg_nexus { struct se_session *tvn_se_sess; @@ -72,15 +75,23 @@ struct usbg_cmd { struct se_cmd se_cmd; void *data_buf; /* used if no sg support available */ struct f_uas *fu; - struct completion write_complete; struct kref ref; + struct usb_request *req; + + u32 flags; +#define USBG_CMD_PENDING_DATA_WRITE BIT(0) + /* UAS only */ u16 tag; u16 prio_attr; struct sense_iu sense_iu; + struct response_iu response_iu; enum uas_state state; - struct uas_stream *stream; + + int tmr_func; + int tmr_rsp; +#define RC_RESPONSE_UNKNOWN 0xff /* BOT only */ __le32 bot_tag; @@ -93,6 +104,9 @@ struct uas_stream { struct usb_request *req_in; struct usb_request *req_out; struct usb_request *req_status; + + struct completion cmd_completion; + struct hlist_node node; }; struct usbg_cdb { @@ -116,15 +130,17 @@ struct f_uas { #define USBG_USE_STREAMS (1 << 2) #define USBG_IS_BOT (1 << 3) #define USBG_BOT_CMD_PEND (1 << 4) +#define USBG_BOT_WEDGED (1 << 5) - struct usbg_cdb cmd; + struct usbg_cdb cmd[USBG_NUM_CMDS]; struct usb_ep *ep_in; struct usb_ep *ep_out; /* UAS */ struct usb_ep *ep_status; struct usb_ep *ep_cmd; - struct uas_stream stream[UASP_SS_EP_COMP_NUM_STREAMS]; + struct uas_stream stream[USBG_NUM_CMDS]; + DECLARE_HASHTABLE(stream_hash, UASP_SS_EP_COMP_LOG_STREAMS); /* BOT */ struct bot_status bot_status; diff --git a/drivers/usb/gadget/function/u_audio.c b/drivers/usb/gadget/function/u_audio.c index 4a42574b4a7f..ca8dbec65f73 100644 --- a/drivers/usb/gadget/function/u_audio.c +++ b/drivers/usb/gadget/function/u_audio.c @@ -57,13 +57,13 @@ struct uac_rtd_params { /* Volume/Mute controls and their state */ int fu_id; /* Feature Unit ID */ - struct snd_kcontrol *snd_kctl_volume; - struct snd_kcontrol *snd_kctl_mute; + struct snd_ctl_elem_id snd_kctl_volume_id; + struct snd_ctl_elem_id snd_kctl_mute_id; s16 volume_min, volume_max, volume_res; s16 volume; int mute; - struct snd_kcontrol *snd_kctl_rate; /* read-only current rate */ + struct snd_ctl_elem_id snd_kctl_rate_id; /* read-only current rate */ int srate; /* selected samplerate */ int active; /* playback/capture running */ @@ -494,14 +494,13 @@ static inline void free_ep_fback(struct uac_rtd_params *prm, struct usb_ep *ep) static void set_active(struct uac_rtd_params *prm, bool active) { // notifying through the Rate ctrl - struct snd_kcontrol *kctl = prm->snd_kctl_rate; unsigned long flags; spin_lock_irqsave(&prm->lock, flags); if (prm->active != active) { prm->active = active; snd_ctl_notify(prm->uac->card, SNDRV_CTL_EVENT_MASK_VALUE, - &kctl->id); + &prm->snd_kctl_rate_id); } spin_unlock_irqrestore(&prm->lock, flags); } @@ -593,16 +592,25 @@ int u_audio_start_capture(struct g_audio *audio_dev) struct usb_ep *ep, *ep_fback; struct uac_rtd_params *prm; struct uac_params *params = &audio_dev->params; - int req_len, i; + int req_len, i, ret; prm = &uac->c_prm; dev_dbg(dev, "start capture with rate %d\n", prm->srate); ep = audio_dev->out_ep; - config_ep_by_speed(gadget, &audio_dev->func, ep); + ret = config_ep_by_speed(gadget, &audio_dev->func, ep); + if (ret < 0) { + dev_err(dev, "config_ep_by_speed for out_ep failed (%d)\n", ret); + return ret; + } + req_len = ep->maxpacket; prm->ep_enabled = true; - usb_ep_enable(ep); + ret = usb_ep_enable(ep); + if (ret < 0) { + dev_err(dev, "usb_ep_enable failed for out_ep (%d)\n", ret); + return ret; + } for (i = 0; i < params->req_number; i++) { if (!prm->reqs[i]) { @@ -630,9 +638,18 @@ int u_audio_start_capture(struct g_audio *audio_dev) return 0; /* Setup feedback endpoint */ - config_ep_by_speed(gadget, &audio_dev->func, ep_fback); + ret = config_ep_by_speed(gadget, &audio_dev->func, ep_fback); + if (ret < 0) { + dev_err(dev, "config_ep_by_speed in_ep_fback failed (%d)\n", ret); + return ret; // TODO: Clean up out_ep + } + prm->fb_ep_enabled = true; - usb_ep_enable(ep_fback); + ret = usb_ep_enable(ep_fback); + if (ret < 0) { + dev_err(dev, "usb_ep_enable failed for in_ep_fback (%d)\n", ret); + return ret; // TODO: Clean up out_ep + } req_len = ep_fback->maxpacket; req_fback = usb_ep_alloc_request(ep_fback, GFP_ATOMIC); @@ -688,13 +705,17 @@ int u_audio_start_playback(struct g_audio *audio_dev) struct uac_params *params = &audio_dev->params; unsigned int factor; const struct usb_endpoint_descriptor *ep_desc; - int req_len, i; + int req_len, i, ret; unsigned int p_pktsize; prm = &uac->p_prm; dev_dbg(dev, "start playback with rate %d\n", prm->srate); ep = audio_dev->in_ep; - config_ep_by_speed(gadget, &audio_dev->func, ep); + ret = config_ep_by_speed(gadget, &audio_dev->func, ep); + if (ret < 0) { + dev_err(dev, "config_ep_by_speed for in_ep failed (%d)\n", ret); + return ret; + } ep_desc = ep->desc; /* @@ -721,7 +742,11 @@ int u_audio_start_playback(struct g_audio *audio_dev) uac->p_residue_mil = 0; prm->ep_enabled = true; - usb_ep_enable(ep); + ret = usb_ep_enable(ep); + if (ret < 0) { + dev_err(dev, "usb_ep_enable failed for in_ep (%d)\n", ret); + return ret; + } for (i = 0; i < params->req_number; i++) { if (!prm->reqs[i]) { @@ -807,7 +832,7 @@ int u_audio_set_volume(struct g_audio *audio_dev, int playback, s16 val) if (change) snd_ctl_notify(uac->card, SNDRV_CTL_EVENT_MASK_VALUE, - &prm->snd_kctl_volume->id); + &prm->snd_kctl_volume_id); return 0; } @@ -856,7 +881,7 @@ int u_audio_set_mute(struct g_audio *audio_dev, int playback, int val) if (change) snd_ctl_notify(uac->card, SNDRV_CTL_EVENT_MASK_VALUE, - &prm->snd_kctl_mute->id); + &prm->snd_kctl_mute_id); return 0; } @@ -1115,35 +1140,35 @@ static int u_audio_rate_get(struct snd_kcontrol *kcontrol, } static struct snd_kcontrol_new u_audio_controls[] = { - [UAC_FBACK_CTRL] { + [UAC_FBACK_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "Capture Pitch 1000000", .info = u_audio_pitch_info, .get = u_audio_pitch_get, .put = u_audio_pitch_put, }, - [UAC_P_PITCH_CTRL] { + [UAC_P_PITCH_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "Playback Pitch 1000000", .info = u_audio_pitch_info, .get = u_audio_pitch_get, .put = u_audio_pitch_put, }, - [UAC_MUTE_CTRL] { + [UAC_MUTE_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = u_audio_mute_info, .get = u_audio_mute_get, .put = u_audio_mute_put, }, - [UAC_VOLUME_CTRL] { + [UAC_VOLUME_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "", /* will be filled later */ .info = u_audio_volume_info, .get = u_audio_volume_get, .put = u_audio_volume_put, }, - [UAC_RATE_CTRL] { + [UAC_RATE_CTRL] = { .iface = SNDRV_CTL_ELEM_IFACE_PCM, .name = "", /* will be filled later */ .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, @@ -1243,7 +1268,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, if (err < 0) goto snd_fail; - strscpy(pcm->name, pcm_name, sizeof(pcm->name)); + strscpy(pcm->name, pcm_name); pcm->private_data = uac; uac->pcm = pcm; @@ -1257,7 +1282,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, if ((c_chmask && g_audio->in_ep_fback) || (p_chmask && params->p_fu.id) || (c_chmask && params->c_fu.id)) - strscpy(card->mixername, card_name, sizeof(card->driver)); + strscpy(card->mixername, card_name); if (c_chmask && g_audio->in_ep_fback) { kctl = snd_ctl_new1(&u_audio_controls[UAC_FBACK_CTRL], @@ -1331,7 +1356,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, err = snd_ctl_add(card, kctl); if (err < 0) goto snd_fail; - prm->snd_kctl_mute = kctl; + prm->snd_kctl_mute_id = kctl->id; prm->mute = 0; } @@ -1359,7 +1384,7 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, err = snd_ctl_add(card, kctl); if (err < 0) goto snd_fail; - prm->snd_kctl_volume = kctl; + prm->snd_kctl_volume_id = kctl->id; prm->volume = fu->volume_max; prm->volume_max = fu->volume_max; prm->volume_min = fu->volume_min; @@ -1383,12 +1408,13 @@ int g_audio_setup(struct g_audio *g_audio, const char *pcm_name, err = snd_ctl_add(card, kctl); if (err < 0) goto snd_fail; - prm->snd_kctl_rate = kctl; + prm->snd_kctl_rate_id = kctl->id; } - strscpy(card->driver, card_name, sizeof(card->driver)); - strscpy(card->shortname, card_name, sizeof(card->shortname)); - sprintf(card->longname, "%s %i", card_name, card->dev->id); + strscpy(card->driver, card_name); + strscpy(card->shortname, card_name); + snprintf(card->longname, sizeof(card->longname), "%s %i", + card_name, card->dev->id); snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, NULL, 0, BUFF_SIZE_MAX); @@ -1420,6 +1446,8 @@ void g_audio_cleanup(struct g_audio *g_audio) return; uac = g_audio->uac; + g_audio->uac = NULL; + card = uac->card; if (card) snd_card_free_when_closed(card); diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index a366abb45623..f58590bf5e02 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -93,11 +93,10 @@ struct eth_dev { #define DEFAULT_QLEN 2 /* double buffering by default */ -/* for dual-speed hardware, use deeper queues at high/super speed */ +/* use deeper queues at high/super speed */ static inline int qlen(struct usb_gadget *gadget, unsigned qmult) { - if (gadget_is_dualspeed(gadget) && (gadget->speed == USB_SPEED_HIGH || - gadget->speed >= USB_SPEED_SUPER)) + if (gadget->speed == USB_SPEED_HIGH || gadget->speed >= USB_SPEED_SUPER) return qmult * DEFAULT_QLEN; else return DEFAULT_QLEN; @@ -719,7 +718,7 @@ static const struct net_device_ops eth_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -static struct device_type gadget_type = { +static const struct device_type gadget_type = { .name = "gadget", }; @@ -1033,7 +1032,7 @@ int gether_set_ifname(struct net_device *net, const char *name, int len) if (!p || p[1] != 'd' || strchr(p + 2, '%')) return -EINVAL; - strncpy(net->name, tmp, sizeof(net->name)); + strscpy(net->name, tmp); dev->ifname_set = true; return 0; @@ -1053,8 +1052,8 @@ void gether_suspend(struct gether *link) * There is a transfer in progress. So we trigger a remote * wakeup to inform the host. */ - ether_wakeup_host(dev->port_usb); - return; + if (!ether_wakeup_host(dev->port_usb)) + return; } spin_lock_irqsave(&dev->lock, flags); link->is_suspend = true; @@ -1246,5 +1245,6 @@ void gether_disconnect(struct gether *link) } EXPORT_SYMBOL_GPL(gether_disconnect); +MODULE_DESCRIPTION("Ethernet-over-USB link layer utilities for Gadget stack"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("David Brownell"); diff --git a/drivers/usb/gadget/function/u_ether.h b/drivers/usb/gadget/function/u_ether.h index 851ee10d6e63..34be220cef77 100644 --- a/drivers/usb/gadget/function/u_ether.h +++ b/drivers/usb/gadget/function/u_ether.h @@ -279,4 +279,17 @@ static inline bool can_support_ecm(struct usb_gadget *gadget) return true; } +/* peak (theoretical) bulk transfer rate in bits-per-second */ +static inline unsigned int gether_bitrate(struct usb_gadget *g) +{ + if (g->speed >= USB_SPEED_SUPER_PLUS) + return 4250000000U; + if (g->speed == USB_SPEED_SUPER) + return 3750000000U; + else if (g->speed == USB_SPEED_HIGH) + return 13 * 512 * 8 * 1000 * 8; + else + return 19 * 64 * 1 * 1000 * 8; +} + #endif /* __U_ETHER_H */ diff --git a/drivers/usb/gadget/function/u_hid.h b/drivers/usb/gadget/function/u_hid.h index 84bb70292855..a9ed9720caee 100644 --- a/drivers/usb/gadget/function/u_hid.h +++ b/drivers/usb/gadget/function/u_hid.h @@ -25,6 +25,8 @@ struct f_hid_opts { unsigned short report_desc_length; unsigned char *report_desc; bool report_desc_alloc; + unsigned char interval; + bool interval_user_set; /* * Protect the data form concurrent access by read/write diff --git a/drivers/usb/gadget/function/u_midi2.h b/drivers/usb/gadget/function/u_midi2.h new file mode 100644 index 000000000000..4e7adb41dfb7 --- /dev/null +++ b/drivers/usb/gadget/function/u_midi2.h @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Utility definitions for MIDI 2.0 function + */ + +#ifndef U_MIDI2_H +#define U_MIDI2_H + +#include <linux/usb/composite.h> +#include <sound/asound.h> + +struct f_midi2_opts; +struct f_midi2_ep_opts; +struct f_midi2_block_opts; + +/* UMP Function Block info */ +struct f_midi2_block_info { + unsigned int direction; /* FB direction: 1-3 */ + unsigned int first_group; /* first UMP group: 0-15 */ + unsigned int num_groups; /* number of UMP groups: 1-16 */ + unsigned int midi1_first_group; /* first UMP group for MIDI 1.0 */ + unsigned int midi1_num_groups; /* number of UMP groups for MIDI 1.0 */ + unsigned int ui_hint; /* UI-hint: 0-3 */ + unsigned int midi_ci_version; /* MIDI-CI version: 0-255 */ + unsigned int sysex8_streams; /* number of sysex8 streams: 0-255 */ + unsigned int is_midi1; /* MIDI 1.0 port: 0-2 */ + bool active; /* FB active flag: bool */ + const char *name; /* FB name */ +}; + +/* UMP Endpoint info */ +struct f_midi2_ep_info { + unsigned int protocol_caps; /* protocol capabilities: 1-3 */ + unsigned int protocol; /* default protocol: 1-2 */ + unsigned int manufacturer; /* manufacturer id: 0-0xffffff */ + unsigned int family; /* device family id: 0-0xffff */ + unsigned int model; /* device model id: 0x-0xffff */ + unsigned int sw_revision; /* software revision: 32bit */ + + const char *ep_name; /* Endpoint name */ + const char *product_id; /* Product ID */ +}; + +struct f_midi2_card_info { + bool process_ump; /* process UMP stream: bool */ + bool static_block; /* static FBs: bool */ + unsigned int req_buf_size; /* request buffer size */ + unsigned int num_reqs; /* number of requests */ + const char *iface_name; /* interface name */ +}; + +struct f_midi2_block_opts { + struct config_group group; + unsigned int id; + struct f_midi2_block_info info; + struct f_midi2_ep_opts *ep; +}; + +struct f_midi2_ep_opts { + struct config_group group; + unsigned int index; + struct f_midi2_ep_info info; + struct f_midi2_block_opts *blks[SNDRV_UMP_MAX_BLOCKS]; + struct f_midi2_opts *opts; +}; + +#define MAX_UMP_EPS 4 +#define MAX_CABLES 16 + +struct f_midi2_opts { + struct usb_function_instance func_inst; + struct mutex lock; + int refcnt; + + struct f_midi2_card_info info; + + unsigned int num_eps; + struct f_midi2_ep_opts *eps[MAX_UMP_EPS]; +}; + +#endif /* U_MIDI2_H */ diff --git a/drivers/usb/gadget/function/u_ncm.h b/drivers/usb/gadget/function/u_ncm.h index 5408854d8407..49ec095cdb4b 100644 --- a/drivers/usb/gadget/function/u_ncm.h +++ b/drivers/usb/gadget/function/u_ncm.h @@ -31,6 +31,8 @@ struct f_ncm_opts { */ struct mutex lock; int refcnt; + + u16 max_segment_size; }; #endif /* U_NCM_H */ diff --git a/drivers/usb/gadget/function/u_phonet.h b/drivers/usb/gadget/function/u_phonet.h index c53233b37192..ff62ca22c40d 100644 --- a/drivers/usb/gadget/function/u_phonet.h +++ b/drivers/usb/gadget/function/u_phonet.h @@ -20,7 +20,6 @@ struct f_phonet_opts { struct net_device *gphonet_setup_default(void); void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g); int gphonet_register_netdev(struct net_device *net); -int phonet_bind_config(struct usb_configuration *c, struct net_device *dev); void gphonet_cleanup(struct net_device *dev); #endif /* __U_PHONET_H */ diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c index 1115396b46a0..1cce5317181a 100644 --- a/drivers/usb/gadget/function/u_serial.c +++ b/drivers/usb/gadget/function/u_serial.c @@ -21,6 +21,7 @@ #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/export.h> #include <linux/module.h> #include <linux/console.h> @@ -28,6 +29,7 @@ #include <linux/kthread.h> #include <linux/workqueue.h> #include <linux/kfifo.h> +#include <linux/serial.h> #include "u_serial.h" @@ -126,6 +128,7 @@ struct gs_port { wait_queue_head_t close_wait; bool suspended; /* port suspended */ bool start_delayed; /* delay start when suspended */ + struct async_icount icount; /* REVISIT this state ... */ struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ @@ -257,6 +260,7 @@ __acquires(&port->port_lock) break; } do_tty_wake = true; + port->icount.tx += len; req->length = len; list_del(&req->list); @@ -291,8 +295,8 @@ __acquires(&port->port_lock) break; } - if (do_tty_wake && port->port.tty) - tty_wakeup(port->port.tty); + if (do_tty_wake) + tty_port_tty_wakeup(&port->port); return status; } @@ -408,6 +412,7 @@ static void gs_rx_push(struct work_struct *work) size -= n; } + port->icount.rx += size; count = tty_insert_flip_string(&port->port, packet, size); if (count) @@ -539,20 +544,16 @@ static int gs_alloc_requests(struct usb_ep *ep, struct list_head *head, static int gs_start_io(struct gs_port *port) { struct list_head *head = &port->read_pool; - struct usb_ep *ep; + struct usb_ep *ep = port->port_usb->out; int status; unsigned started; - if (!port->port_usb || !port->port.tty) - return -EIO; - /* Allocate RX and TX I/O buffers. We can't easily do this much * earlier (with GFP_KERNEL) because the requests are coupled to * endpoints, as are the packet sizes we'll be using. Different * configurations may use different endpoints with a given port; * and high speed vs full speed changes packet sizes too. */ - ep = port->port_usb->out; status = gs_alloc_requests(ep, head, gs_read_complete, &port->read_allocated); if (status) @@ -573,17 +574,31 @@ static int gs_start_io(struct gs_port *port) gs_start_tx(port); /* Unblock any pending writes into our circular buffer, in case * we didn't in gs_start_tx() */ - tty_wakeup(port->port.tty); + tty_port_tty_wakeup(&port->port); } else { - gs_free_requests(ep, head, &port->read_allocated); - gs_free_requests(port->port_usb->in, &port->write_pool, - &port->write_allocated); + /* Free reqs only if we are still connected */ + if (port->port_usb) { + gs_free_requests(ep, head, &port->read_allocated); + gs_free_requests(port->port_usb->in, &port->write_pool, + &port->write_allocated); + } status = -EIO; } return status; } +static int gserial_wakeup_host(struct gserial *gser) +{ + struct usb_function *func = &gser->func; + struct usb_gadget *gadget = func->config->cdev->gadget; + + if (func->func_suspended) + return usb_func_wakeup(func); + else + return usb_gadget_wakeup(gadget); +} + /*-------------------------------------------------------------------------*/ /* TTY Driver */ @@ -734,17 +749,30 @@ exit: spin_unlock_irq(&port->port_lock); } -static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count) +static ssize_t gs_write(struct tty_struct *tty, const u8 *buf, size_t count) { struct gs_port *port = tty->driver_data; unsigned long flags; + int ret = 0; + struct gserial *gser = port->port_usb; - pr_vdebug("gs_write: ttyGS%d (%p) writing %d bytes\n", + pr_vdebug("gs_write: ttyGS%d (%p) writing %zu bytes\n", port->port_num, tty, count); spin_lock_irqsave(&port->port_lock, flags); if (count) count = kfifo_in(&port->port_write_buf, buf, count); + + if (port->suspended) { + spin_unlock_irqrestore(&port->port_lock, flags); + ret = gserial_wakeup_host(gser); + if (ret) { + pr_debug("ttyGS%d: Remote wakeup failed:%d\n", port->port_num, ret); + return count; + } + spin_lock_irqsave(&port->port_lock, flags); + } + /* treat count == 0 as flush_chars() */ if (port->port_usb) gs_start_tx(port); @@ -753,7 +781,7 @@ static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count) return count; } -static int gs_put_char(struct tty_struct *tty, unsigned char ch) +static int gs_put_char(struct tty_struct *tty, u8 ch) { struct gs_port *port = tty->driver_data; unsigned long flags; @@ -773,10 +801,22 @@ static void gs_flush_chars(struct tty_struct *tty) { struct gs_port *port = tty->driver_data; unsigned long flags; + int ret = 0; + struct gserial *gser = port->port_usb; pr_vdebug("gs_flush_chars: (%d,%p)\n", port->port_num, tty); spin_lock_irqsave(&port->port_lock, flags); + if (port->suspended) { + spin_unlock_irqrestore(&port->port_lock, flags); + ret = gserial_wakeup_host(gser); + if (ret) { + pr_debug("ttyGS%d: Remote wakeup failed:%d\n", port->port_num, ret); + return; + } + spin_lock_irqsave(&port->port_lock, flags); + } + if (port->port_usb) gs_start_tx(port); spin_unlock_irqrestore(&port->port_lock, flags); @@ -851,6 +891,23 @@ static int gs_break_ctl(struct tty_struct *tty, int duration) return status; } +static int gs_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + struct gs_port *port = tty->driver_data; + struct async_icount cnow; + unsigned long flags; + + spin_lock_irqsave(&port->port_lock, flags); + cnow = port->icount; + spin_unlock_irqrestore(&port->port_lock, flags); + + icount->rx = cnow.rx; + icount->tx = cnow.tx; + + return 0; +} + static const struct tty_operations gs_tty_ops = { .open = gs_open, .close = gs_close, @@ -861,6 +918,7 @@ static const struct tty_operations gs_tty_ops = { .chars_in_buffer = gs_chars_in_buffer, .unthrottle = gs_unthrottle, .break_ctl = gs_break_ctl, + .get_icount = gs_get_icount, }; /*-------------------------------------------------------------------------*/ @@ -1438,9 +1496,18 @@ void gserial_suspend(struct gserial *gser) return; } + if (port->write_busy || port->write_started) { + /* Wakeup to host if there are ongoing transfers */ + spin_unlock_irqrestore(&serial_port_lock, flags); + if (!gserial_wakeup_host(gser)) + return; + spin_lock_irqsave(&serial_port_lock, flags); + } + spin_lock(&port->port_lock); spin_unlock(&serial_port_lock); port->suspended = true; + port->start_delayed = true; spin_unlock_irqrestore(&port->port_lock, flags); } EXPORT_SYMBOL_GPL(gserial_suspend); @@ -1519,7 +1586,7 @@ static int __init userial_init(void) pr_debug("%s: registered %d ttyGS* device%s\n", __func__, MAX_U_SERIAL_PORTS, - (MAX_U_SERIAL_PORTS == 1) ? "" : "s"); + str_plural(MAX_U_SERIAL_PORTS)); return status; fail: @@ -1536,4 +1603,5 @@ static void __exit userial_cleanup(void) } module_exit(userial_cleanup); +MODULE_DESCRIPTION("utilities for USB gadget \"serial port\"/TTY support"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/function/u_serial.h b/drivers/usb/gadget/function/u_serial.h index 102a7323a1fd..e1274338ea61 100644 --- a/drivers/usb/gadget/function/u_serial.h +++ b/drivers/usb/gadget/function/u_serial.h @@ -17,6 +17,10 @@ struct f_serial_opts { struct usb_function_instance func_inst; u8 port_num; + u8 protocol; + + struct mutex lock; /* protect instances */ + int instances; }; /* @@ -71,8 +75,4 @@ void gserial_disconnect(struct gserial *); void gserial_suspend(struct gserial *p); void gserial_resume(struct gserial *p); -/* functions are bound to configurations by a config or gadget driver */ -int gser_bind_config(struct usb_configuration *c, u8 port_num); -int obex_bind_config(struct usb_configuration *c, u8 port_num); - #endif /* __U_SERIAL_H */ diff --git a/drivers/usb/gadget/function/u_uac1.h b/drivers/usb/gadget/function/u_uac1.h index f7a616760e31..feb6eb76462f 100644 --- a/drivers/usb/gadget/function/u_uac1.h +++ b/drivers/usb/gadget/function/u_uac1.h @@ -52,7 +52,17 @@ struct f_uac1_opts { int req_number; unsigned bound:1; - char function_name[32]; + char function_name[USB_MAX_STRING_LEN]; + + char p_it_name[USB_MAX_STRING_LEN]; + char p_it_ch_name[USB_MAX_STRING_LEN]; + char p_ot_name[USB_MAX_STRING_LEN]; + char p_fu_vol_name[USB_MAX_STRING_LEN]; + + char c_it_name[USB_MAX_STRING_LEN]; + char c_it_ch_name[USB_MAX_STRING_LEN]; + char c_ot_name[USB_MAX_STRING_LEN]; + char c_fu_vol_name[USB_MAX_STRING_LEN]; struct mutex lock; int refcnt; diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index 0510c9bad58d..0df808289ded 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -35,6 +35,11 @@ #define UAC2_DEF_REQ_NUM 2 #define UAC2_DEF_INT_REQ_NUM 10 +#define UAC2_DEF_P_TERM_TYPE 0x301 + /* UAC_OUTPUT_TERMINAL_SPEAKER */ +#define UAC2_DEF_C_TERM_TYPE 0x201 + /* UAC_INPUT_TERMINAL_MICROPHONE*/ + struct f_uac2_opts { struct usb_function_instance func_inst; int p_chmask; @@ -63,7 +68,23 @@ struct f_uac2_opts { int fb_max; bool bound; - char function_name[32]; + char function_name[USB_MAX_STRING_LEN]; + char if_ctrl_name[USB_MAX_STRING_LEN]; + char clksrc_in_name[USB_MAX_STRING_LEN]; + char clksrc_out_name[USB_MAX_STRING_LEN]; + + char p_it_name[USB_MAX_STRING_LEN]; + char p_it_ch_name[USB_MAX_STRING_LEN]; + char p_ot_name[USB_MAX_STRING_LEN]; + char p_fu_vol_name[USB_MAX_STRING_LEN]; + + char c_it_name[USB_MAX_STRING_LEN]; + char c_it_ch_name[USB_MAX_STRING_LEN]; + char c_ot_name[USB_MAX_STRING_LEN]; + char c_fu_vol_name[USB_MAX_STRING_LEN]; + + s16 p_terminal_type; + s16 c_terminal_type; struct mutex lock; int refcnt; diff --git a/drivers/usb/gadget/function/u_uvc.h b/drivers/usb/gadget/function/u_uvc.h index 1ce58f61253c..3ac392cbb779 100644 --- a/drivers/usb/gadget/function/u_uvc.h +++ b/drivers/usb/gadget/function/u_uvc.h @@ -98,6 +98,12 @@ struct f_uvc_opts { */ struct mutex lock; int refcnt; + + /* + * Only for legacy gadget. Shall be NULL for configfs-composed gadgets, + * which is guaranteed by alloc_inst implementation of f_uvc doing kzalloc. + */ + struct uvcg_streaming_header *header; }; #endif /* U_UVC_H */ diff --git a/drivers/usb/gadget/function/uvc.h b/drivers/usb/gadget/function/uvc.h index 100475b1363e..9e79cbe50715 100644 --- a/drivers/usb/gadget/function/uvc.h +++ b/drivers/usb/gadget/function/uvc.h @@ -71,6 +71,11 @@ extern unsigned int uvc_gadget_trace_param; #define UVCG_REQUEST_HEADER_LEN 12 +#define UVCG_REQ_MAX_INT_COUNT 16 +#define UVCG_REQ_MAX_ZERO_COUNT (2 * UVCG_REQ_MAX_INT_COUNT) + +#define UVCG_STREAMING_MIN_BUFFERS 2 + /* ------------------------------------------------------------------------ * Structures */ @@ -81,6 +86,7 @@ struct uvc_request { struct sg_table sgt; u8 header[UVCG_REQUEST_HEADER_LEN]; struct uvc_buffer *last_buf; + struct list_head list; }; struct uvc_video { @@ -90,20 +96,37 @@ struct uvc_video { struct work_struct pump; struct workqueue_struct *async_wq; + struct kthread_worker *kworker; + struct kthread_work hw_submit; + + atomic_t queued; + /* Frame parameters */ u8 bpp; u32 fcc; unsigned int width; unsigned int height; unsigned int imagesize; + unsigned int interval; struct mutex mutex; /* protects frame parameters */ unsigned int uvc_num_requests; + unsigned int reqs_per_frame; + /* Requests */ + bool is_enabled; /* tracks whether video stream is enabled */ unsigned int req_size; - struct uvc_request *ureq; + struct list_head ureqs; /* all uvc_requests allocated by uvc_video */ + + /* USB requests that the video pump thread can encode into */ struct list_head req_free; + + /* + * USB requests video pump thread has already encoded into. These are + * ready to be queued to the endpoint. + */ + struct list_head req_ready; spinlock_t req_lock; unsigned int req_int_count; @@ -173,13 +196,16 @@ struct uvc_file_handle { #define to_uvc_file_handle(handle) \ container_of(handle, struct uvc_file_handle, vfh) +static inline struct uvc_file_handle *file_to_uvc_file_handle(struct file *filp) +{ + return container_of(file_to_v4l2_fh(filp), struct uvc_file_handle, vfh); +} + /* ------------------------------------------------------------------------ * Functions */ -extern void uvc_function_setup_continue(struct uvc_device *uvc); -extern void uvc_endpoint_stream(struct uvc_device *dev); - +extern void uvc_function_setup_continue(struct uvc_device *uvc, int disable_ep); extern void uvc_function_connect(struct uvc_device *uvc); extern void uvc_function_disconnect(struct uvc_device *uvc); diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c index 9bf0e985acfa..a4a2d3dcb0d6 100644 --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -13,6 +13,7 @@ #include "uvc_configfs.h" #include <linux/sort.h> +#include <linux/usb/uvc.h> #include <linux/usb/video.h> /* ----------------------------------------------------------------------------- @@ -92,10 +93,10 @@ static int __uvcg_iter_item_entries(const char *page, size_t len, while (pg - page < len) { i = 0; - while (i < sizeof(buf) && (pg - page < len) && + while (i < bufsize && (pg - page < len) && *pg != '\0' && *pg != '\n') buf[i++] = *pg++; - if (i == sizeof(buf)) { + if (i == bufsize) { ret = -EINVAL; goto out_free_buf; } @@ -1565,11 +1566,13 @@ static const struct uvcg_config_group_type uvcg_control_grp_type = { /* ----------------------------------------------------------------------------- * streaming/uncompressed * streaming/mjpeg + * streaming/framebased */ static const char * const uvcg_format_names[] = { "uncompressed", "mjpeg", + "framebased", }; static struct uvcg_color_matching * @@ -1776,6 +1779,9 @@ static int uvcg_streaming_header_allow_link(struct config_item *src, target_fmt = container_of(to_config_group(target), struct uvcg_format, group); + if (!target_fmt) + goto out; + uvcg_format_set_indices(to_config_group(target)); format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL); @@ -1815,6 +1821,9 @@ static void uvcg_streaming_header_drop_link(struct config_item *src, target_fmt = container_of(to_config_group(target), struct uvcg_format, group); + if (!target_fmt) + goto out; + list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) if (format_ptr->fmt == target_fmt) { list_del(&format_ptr->entry); @@ -1825,6 +1834,7 @@ static void uvcg_streaming_header_drop_link(struct config_item *src, --target_fmt->linked; +out: mutex_unlock(&opts->lock); mutex_unlock(su_mutex); } @@ -2021,6 +2031,7 @@ UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, 32); UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, 32); UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, 32); UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, 32); +UVCG_FRAME_ATTR(dw_bytes_perline, dwBytesPerLine, 32); #undef UVCG_FRAME_ATTR @@ -2034,7 +2045,7 @@ static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item, int result, i; char *pg = page; - mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent; opts = to_f_uvc_opts(opts_item); @@ -2104,7 +2115,7 @@ end: UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval); -static struct configfs_attribute *uvcg_frame_attrs[] = { +static struct configfs_attribute *uvcg_frame_attrs1[] = { &uvcg_frame_attr_b_frame_index, &uvcg_frame_attr_bm_capabilities, &uvcg_frame_attr_w_width, @@ -2117,12 +2128,31 @@ static struct configfs_attribute *uvcg_frame_attrs[] = { NULL, }; -static const struct config_item_type uvcg_frame_type = { +static struct configfs_attribute *uvcg_frame_attrs2[] = { + &uvcg_frame_attr_b_frame_index, + &uvcg_frame_attr_bm_capabilities, + &uvcg_frame_attr_w_width, + &uvcg_frame_attr_w_height, + &uvcg_frame_attr_dw_min_bit_rate, + &uvcg_frame_attr_dw_max_bit_rate, + &uvcg_frame_attr_dw_default_frame_interval, + &uvcg_frame_attr_dw_frame_interval, + &uvcg_frame_attr_dw_bytes_perline, + NULL, +}; + +static const struct config_item_type uvcg_frame_type1 = { .ct_item_ops = &uvcg_config_item_ops, - .ct_attrs = uvcg_frame_attrs, + .ct_attrs = uvcg_frame_attrs1, .ct_owner = THIS_MODULE, }; +static const struct config_item_type uvcg_frame_type2 = { + .ct_item_ops = &uvcg_config_item_ops, + .ct_attrs = uvcg_frame_attrs2, + .ct_owner = THIS_MODULE, +}; + static struct config_item *uvcg_frame_make(struct config_group *group, const char *name) { @@ -2144,6 +2174,7 @@ static struct config_item *uvcg_frame_make(struct config_group *group, h->frame.dw_max_bit_rate = 55296000; h->frame.dw_max_video_frame_buffer_size = 460800; h->frame.dw_default_frame_interval = 666666; + h->frame.dw_bytes_perline = 0; opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; opts = to_f_uvc_opts(opts_item); @@ -2156,6 +2187,9 @@ static struct config_item *uvcg_frame_make(struct config_group *group, } else if (fmt->type == UVCG_MJPEG) { h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; h->fmt_type = UVCG_MJPEG; + } else if (fmt->type == UVCG_FRAMEBASED) { + h->frame.b_descriptor_subtype = UVC_VS_FRAME_FRAME_BASED; + h->fmt_type = UVCG_FRAMEBASED; } else { mutex_unlock(&opts->lock); kfree(h); @@ -2174,7 +2208,10 @@ static struct config_item *uvcg_frame_make(struct config_group *group, ++fmt->num_frames; mutex_unlock(&opts->lock); - config_item_init_type_name(&h->item, name, &uvcg_frame_type); + if (fmt->type == UVCG_FRAMEBASED) + config_item_init_type_name(&h->item, name, &uvcg_frame_type2); + else + config_item_init_type_name(&h->item, name, &uvcg_frame_type1); return &h->item; } @@ -2214,9 +2251,6 @@ static void uvcg_format_set_indices(struct config_group *fmt) list_for_each_entry(ci, &fmt->cg_children, ci_entry) { struct uvcg_frame *frm; - if (ci->ci_type != &uvcg_frame_type) - continue; - frm = to_uvcg_frame(ci); frm->frame.b_frame_index = i++; } @@ -2260,6 +2294,8 @@ static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item, struct f_uvc_opts *opts; struct config_item *opts_item; struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; + const struct uvc_format_desc *format; + u8 tmpguidFormat[sizeof(ch->desc.guidFormat)]; int ret; mutex_lock(su_mutex); /* for navigating configfs hierarchy */ @@ -2273,7 +2309,16 @@ static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item, goto end; } - memcpy(ch->desc.guidFormat, page, + memcpy(tmpguidFormat, page, + min(sizeof(tmpguidFormat), len)); + + format = uvc_format_by_guid(tmpguidFormat); + if (!format) { + ret = -EINVAL; + goto end; + } + + memcpy(ch->desc.guidFormat, tmpguidFormat, min(sizeof(ch->desc.guidFormat), len)); ret = sizeof(ch->desc.guidFormat); @@ -2666,6 +2711,261 @@ static const struct uvcg_config_group_type uvcg_mjpeg_grp_type = { }; /* ----------------------------------------------------------------------------- + * streaming/framebased/<NAME> + */ + +static struct configfs_group_operations uvcg_framebased_group_ops = { + .make_item = uvcg_frame_make, + .drop_item = uvcg_frame_drop, +}; + +#define UVCG_FRAMEBASED_ATTR_RO(cname, aname, bits) \ +static ssize_t uvcg_framebased_##cname##_show(struct config_item *item, \ + char *page) \ +{ \ + struct uvcg_framebased *u = to_uvcg_framebased(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +UVC_ATTR_RO(uvcg_framebased_, cname, aname) + +#define UVCG_FRAMEBASED_ATTR(cname, aname, bits) \ +static ssize_t uvcg_framebased_##cname##_show(struct config_item *item, \ + char *page) \ +{ \ + struct uvcg_framebased *u = to_uvcg_framebased(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int result; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + result = sprintf(page, "%u\n", le##bits##_to_cpu(u->desc.aname));\ + mutex_unlock(&opts->lock); \ + \ + mutex_unlock(su_mutex); \ + return result; \ +} \ + \ +static ssize_t \ +uvcg_framebased_##cname##_store(struct config_item *item, \ + const char *page, size_t len) \ +{ \ + struct uvcg_framebased *u = to_uvcg_framebased(item); \ + struct f_uvc_opts *opts; \ + struct config_item *opts_item; \ + struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ + int ret; \ + u8 num; \ + \ + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ + \ + opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ + opts = to_f_uvc_opts(opts_item); \ + \ + mutex_lock(&opts->lock); \ + if (u->fmt.linked || opts->refcnt) { \ + ret = -EBUSY; \ + goto end; \ + } \ + \ + ret = kstrtou8(page, 0, &num); \ + if (ret) \ + goto end; \ + \ + if (num > 255) { \ + ret = -EINVAL; \ + goto end; \ + } \ + u->desc.aname = num; \ + ret = len; \ +end: \ + mutex_unlock(&opts->lock); \ + mutex_unlock(su_mutex); \ + return ret; \ +} \ + \ +UVC_ATTR(uvcg_framebased_, cname, aname) + +UVCG_FRAMEBASED_ATTR_RO(b_format_index, bFormatIndex, 8); +UVCG_FRAMEBASED_ATTR_RO(b_bits_per_pixel, bBitsPerPixel, 8); +UVCG_FRAMEBASED_ATTR(b_default_frame_index, bDefaultFrameIndex, 8); +UVCG_FRAMEBASED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, 8); +UVCG_FRAMEBASED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, 8); +UVCG_FRAMEBASED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, 8); + +#undef UVCG_FRAMEBASED_ATTR +#undef UVCG_FRAMEBASED_ATTR_RO + +static ssize_t uvcg_framebased_guid_format_show(struct config_item *item, + char *page) +{ + struct uvcg_framebased *ch = to_uvcg_framebased(item); + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat)); + mutex_unlock(&opts->lock); + + mutex_unlock(su_mutex); + + return sizeof(ch->desc.guidFormat); +} + +static ssize_t uvcg_framebased_guid_format_store(struct config_item *item, + const char *page, size_t len) +{ + struct uvcg_framebased *ch = to_uvcg_framebased(item); + struct f_uvc_opts *opts; + struct config_item *opts_item; + struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; + int ret; + + mutex_lock(su_mutex); /* for navigating configfs hierarchy */ + + opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; + opts = to_f_uvc_opts(opts_item); + + mutex_lock(&opts->lock); + if (ch->fmt.linked || opts->refcnt) { + ret = -EBUSY; + goto end; + } + + memcpy(ch->desc.guidFormat, page, + min(sizeof(ch->desc.guidFormat), len)); + ret = sizeof(ch->desc.guidFormat); + +end: + mutex_unlock(&opts->lock); + mutex_unlock(su_mutex); + return ret; +} + +UVC_ATTR(uvcg_framebased_, guid_format, guidFormat); + +static inline ssize_t +uvcg_framebased_bma_controls_show(struct config_item *item, char *page) +{ + struct uvcg_framebased *u = to_uvcg_framebased(item); + + return uvcg_format_bma_controls_show(&u->fmt, page); +} + +static inline ssize_t +uvcg_framebased_bma_controls_store(struct config_item *item, + const char *page, size_t len) +{ + struct uvcg_framebased *u = to_uvcg_framebased(item); + + return uvcg_format_bma_controls_store(&u->fmt, page, len); +} + +UVC_ATTR(uvcg_framebased_, bma_controls, bmaControls); + +static struct configfs_attribute *uvcg_framebased_attrs[] = { + &uvcg_framebased_attr_b_format_index, + &uvcg_framebased_attr_b_default_frame_index, + &uvcg_framebased_attr_b_bits_per_pixel, + &uvcg_framebased_attr_b_aspect_ratio_x, + &uvcg_framebased_attr_b_aspect_ratio_y, + &uvcg_framebased_attr_bm_interface_flags, + &uvcg_framebased_attr_bma_controls, + &uvcg_framebased_attr_guid_format, + NULL, +}; + +static const struct config_item_type uvcg_framebased_type = { + .ct_item_ops = &uvcg_config_item_ops, + .ct_group_ops = &uvcg_framebased_group_ops, + .ct_attrs = uvcg_framebased_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct config_group *uvcg_framebased_make(struct config_group *group, + const char *name) +{ + static char guid[] = { /*Declear frame based as H264 format*/ + 'H', '2', '6', '4', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + }; + struct uvcg_color_matching *color_match; + struct config_item *streaming; + struct uvcg_framebased *h; + + streaming = group->cg_item.ci_parent; + color_match = uvcg_format_get_default_color_match(streaming); + if (!color_match) + return ERR_PTR(-EINVAL); + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (!h) + return ERR_PTR(-ENOMEM); + + h->desc.bLength = UVC_DT_FORMAT_FRAMEBASED_SIZE; + h->desc.bDescriptorType = USB_DT_CS_INTERFACE; + h->desc.bDescriptorSubType = UVC_VS_FORMAT_FRAME_BASED; + memcpy(h->desc.guidFormat, guid, sizeof(guid)); + h->desc.bBitsPerPixel = 0; + h->desc.bDefaultFrameIndex = 1; + h->desc.bAspectRatioX = 0; + h->desc.bAspectRatioY = 0; + h->desc.bmInterfaceFlags = 0; + h->desc.bCopyProtect = 0; + h->desc.bVariableSize = 1; + + INIT_LIST_HEAD(&h->fmt.frames); + h->fmt.type = UVCG_FRAMEBASED; + + h->fmt.color_matching = color_match; + color_match->refcnt++; + config_group_init_type_name(&h->fmt.group, name, + &uvcg_framebased_type); + + return &h->fmt.group; +} + +static struct configfs_group_operations uvcg_framebased_grp_ops = { + .make_group = uvcg_framebased_make, +}; + +static const struct uvcg_config_group_type uvcg_framebased_grp_type = { + .type = { + .ct_item_ops = &uvcg_config_item_ops, + .ct_group_ops = &uvcg_framebased_grp_ops, + .ct_owner = THIS_MODULE, + }, + .name = "framebased", +}; + +/* ----------------------------------------------------------------------------- * streaming/color_matching/default */ @@ -2900,6 +3200,7 @@ static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h, if (ret) return ret; grp = &f->fmt->group; + j = 0; list_for_each_entry(item, &grp->cg_children, ci_entry) { frm = to_uvcg_frame(item); ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); @@ -2953,6 +3254,11 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, container_of(fmt, struct uvcg_mjpeg, fmt); *size += sizeof(m->desc); + } else if (fmt->type == UVCG_FRAMEBASED) { + struct uvcg_framebased *f = + container_of(fmt, struct uvcg_framebased, fmt); + + *size += sizeof(f->desc); } else { return -EINVAL; } @@ -2963,6 +3269,11 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, int sz = sizeof(frm->dw_frame_interval); *size += sizeof(frm->frame); + /* + * framebased has duplicate member with uncompressed and + * mjpeg, so minus it + */ + *size -= sizeof(u32); *size += frm->frame.b_frame_interval_type * sz; } break; @@ -2979,6 +3290,27 @@ static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, return 0; } +static int __uvcg_copy_framebased_desc(void *dest, struct uvcg_frame *frm, + int sz) +{ + struct uvc_frame_framebased *desc = dest; + + desc->bLength = frm->frame.b_length; + desc->bDescriptorType = frm->frame.b_descriptor_type; + desc->bDescriptorSubType = frm->frame.b_descriptor_subtype; + desc->bFrameIndex = frm->frame.b_frame_index; + desc->bmCapabilities = frm->frame.bm_capabilities; + desc->wWidth = frm->frame.w_width; + desc->wHeight = frm->frame.w_height; + desc->dwMinBitRate = frm->frame.dw_min_bit_rate; + desc->dwMaxBitRate = frm->frame.dw_max_bit_rate; + desc->dwDefaultFrameInterval = frm->frame.dw_default_frame_interval; + desc->bFrameIntervalType = frm->frame.b_frame_interval_type; + desc->dwBytesPerLine = frm->frame.dw_bytes_perline; + + return 0; +} + /* * Fill an array of streaming descriptors. * @@ -3033,6 +3365,15 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, m->desc.bNumFrameDescriptors = fmt->num_frames; memcpy(*dest, &m->desc, sizeof(m->desc)); *dest += sizeof(m->desc); + } else if (fmt->type == UVCG_FRAMEBASED) { + struct uvcg_framebased *f = + container_of(fmt, struct uvcg_framebased, + fmt); + + f->desc.bFormatIndex = n + 1; + f->desc.bNumFrameDescriptors = fmt->num_frames; + memcpy(*dest, &f->desc, sizeof(f->desc)); + *dest += sizeof(f->desc); } else { return -EINVAL; } @@ -3042,8 +3383,11 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, struct uvcg_frame *frm = priv1; struct uvc_descriptor_header *h = *dest; - sz = sizeof(frm->frame); - memcpy(*dest, &frm->frame, sz); + sz = sizeof(frm->frame) - 4; + if (frm->fmt_type != UVCG_FRAMEBASED) + memcpy(*dest, &frm->frame, sz); + else + __uvcg_copy_framebased_desc(*dest, frm, sz); *dest += sz; sz = frm->frame.b_frame_interval_type * sizeof(*frm->dw_frame_interval); @@ -3054,7 +3398,10 @@ static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, frm->frame.b_frame_interval_type); else if (frm->fmt_type == UVCG_MJPEG) h->bLength = UVC_DT_FRAME_MJPEG_SIZE( - frm->frame.b_frame_interval_type); + frm->frame.b_frame_interval_type); + else if (frm->fmt_type == UVCG_FRAMEBASED) + h->bLength = UVC_DT_FRAME_FRAMEBASED_SIZE( + frm->frame.b_frame_interval_type); } break; case UVCG_COLOR_MATCHING: { @@ -3273,6 +3620,7 @@ static const struct uvcg_config_group_type uvcg_streaming_grp_type = { &uvcg_streaming_header_grp_type, &uvcg_uncompressed_grp_type, &uvcg_mjpeg_grp_type, + &uvcg_framebased_grp_type, &uvcg_color_matching_grp_type, &uvcg_streaming_class_grp_type, NULL, @@ -3414,7 +3762,7 @@ static ssize_t f_uvc_opts_string_##cname##_show(struct config_item *item,\ int result; \ \ mutex_lock(&opts->lock); \ - result = snprintf(page, sizeof(opts->aname), "%s", opts->aname);\ + result = scnprintf(page, sizeof(opts->aname), "%s", opts->aname);\ mutex_unlock(&opts->lock); \ \ return result; \ diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h index c6a690158138..9391614135e9 100644 --- a/drivers/usb/gadget/function/uvc_configfs.h +++ b/drivers/usb/gadget/function/uvc_configfs.h @@ -49,6 +49,7 @@ container_of(group_ptr, struct uvcg_color_matching, group) enum uvcg_format_type { UVCG_UNCOMPRESSED = 0, UVCG_MJPEG, + UVCG_FRAMEBASED, }; struct uvcg_format { @@ -73,10 +74,12 @@ static inline struct uvcg_format *to_uvcg_format(struct config_item *item) struct uvcg_streaming_header { struct config_item item; - struct uvc_input_header_descriptor desc; unsigned linked; struct list_head formats; unsigned num_fmt; + + /* Must be last --ends in a flexible-array member. */ + struct uvc_input_header_descriptor desc; }; static inline struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item) @@ -105,6 +108,7 @@ struct uvcg_frame { u32 dw_max_video_frame_buffer_size; u32 dw_default_frame_interval; u8 b_frame_interval_type; + u32 dw_bytes_perline; } __attribute__((packed)) frame; u32 *dw_frame_interval; }; @@ -143,6 +147,20 @@ static inline struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) } /* ----------------------------------------------------------------------------- + * streaming/framebased/<NAME> + */ + +struct uvcg_framebased { + struct uvcg_format fmt; + struct uvc_format_framebased desc; +}; + +static inline struct uvcg_framebased *to_uvcg_framebased(struct config_item *item) +{ + return container_of(to_uvcg_format(item), struct uvcg_framebased, fmt); +} + +/* ----------------------------------------------------------------------------- * control/extensions/<NAME> */ diff --git a/drivers/usb/gadget/function/uvc_queue.c b/drivers/usb/gadget/function/uvc_queue.c index 0aa3d7e1f3cc..9a1bbd79ff5a 100644 --- a/drivers/usb/gadget/function/uvc_queue.c +++ b/drivers/usb/gadget/function/uvc_queue.c @@ -21,6 +21,7 @@ #include <media/videobuf2-vmalloc.h> #include "uvc.h" +#include "uvc_video.h" /* ------------------------------------------------------------------------ * Video buffers queue management. @@ -44,33 +45,23 @@ static int uvc_queue_setup(struct vb2_queue *vq, { struct uvc_video_queue *queue = vb2_get_drv_priv(vq); struct uvc_video *video = container_of(queue, struct uvc_video, queue); - unsigned int req_size; - unsigned int nreq; if (*nbuffers > UVC_MAX_VIDEO_BUFFERS) *nbuffers = UVC_MAX_VIDEO_BUFFERS; + if (*nbuffers < UVCG_STREAMING_MIN_BUFFERS) + *nbuffers = UVCG_STREAMING_MIN_BUFFERS; *nplanes = 1; sizes[0] = video->imagesize; - req_size = video->ep->maxpacket - * max_t(unsigned int, video->ep->maxburst, 1) - * (video->ep->mult); - - /* We divide by two, to increase the chance to run - * into fewer requests for smaller framesizes. - */ - nreq = DIV_ROUND_UP(DIV_ROUND_UP(sizes[0], 2), req_size); - nreq = clamp(nreq, 4U, 64U); - video->uvc_num_requests = nreq; - return 0; } static int uvc_buffer_prepare(struct vb2_buffer *vb) { struct uvc_video_queue *queue = vb2_get_drv_priv(vb->vb2_queue); + struct uvc_video *video = container_of(queue, struct uvc_video, queue); struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct uvc_buffer *buf = container_of(vbuf, struct uvc_buffer, buf); @@ -91,10 +82,15 @@ static int uvc_buffer_prepare(struct vb2_buffer *vb) buf->mem = vb2_plane_vaddr(vb, 0); } buf->length = vb2_plane_size(vb, 0); - if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { buf->bytesused = 0; - else + } else { buf->bytesused = vb2_get_plane_payload(vb, 0); + buf->req_payload_size = + DIV_ROUND_UP(buf->bytesused + + (video->reqs_per_frame * UVCG_REQUEST_HEADER_LEN), + video->reqs_per_frame); + } return 0; } @@ -126,8 +122,6 @@ static const struct vb2_ops uvc_queue_qops = { .queue_setup = uvc_queue_setup, .buf_prepare = uvc_buffer_prepare, .buf_queue = uvc_buffer_queue, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, }; int uvcg_queue_init(struct uvc_video_queue *queue, struct device *dev, enum v4l2_buf_type type, diff --git a/drivers/usb/gadget/function/uvc_queue.h b/drivers/usb/gadget/function/uvc_queue.h index 41f87b917f6b..b54becc570a3 100644 --- a/drivers/usb/gadget/function/uvc_queue.h +++ b/drivers/usb/gadget/function/uvc_queue.h @@ -39,6 +39,8 @@ struct uvc_buffer { unsigned int offset; unsigned int length; unsigned int bytesused; + /* req_payload_size: only used with isoc */ + unsigned int req_payload_size; }; #define UVC_QUEUE_DISCONNECTED (1 << 0) diff --git a/drivers/usb/gadget/function/uvc_trace.c b/drivers/usb/gadget/function/uvc_trace.c new file mode 100644 index 000000000000..d384f6d8221a --- /dev/null +++ b/drivers/usb/gadget/function/uvc_trace.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * trace.c - USB UVC Gadget Trace Support + * + * Copyright (C) 2024 Pengutronix e.K. + * + * Author: Michael Grzeschik <m.grzeschik@pengutronix.de> + */ + +#define CREATE_TRACE_POINTS +#include "uvc_trace.h" diff --git a/drivers/usb/gadget/function/uvc_trace.h b/drivers/usb/gadget/function/uvc_trace.h new file mode 100644 index 000000000000..04c33cf43cc2 --- /dev/null +++ b/drivers/usb/gadget/function/uvc_trace.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * trace.h - USB UVC Gadget Trace Support + * + * Copyright (C) 2024 Pengutronix e.K. + * + * Author: Michael Grzeschik <m.grzeschik@pengutronix.de> + */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM uvcg + +#if !defined(__UVCG_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define __UVCG_TRACE_H + +#include <linux/types.h> +#include <linux/tracepoint.h> +#include <linux/usb/gadget.h> +#include <asm/byteorder.h> + +DECLARE_EVENT_CLASS(uvcg_video_req, + TP_PROTO(struct usb_request *req, u32 queued), + TP_ARGS(req, queued), + TP_STRUCT__entry( + __field(struct usb_request *, req) + __field(u32, length) + __field(u32, queued) + ), + TP_fast_assign( + __entry->req = req; + __entry->length = req->length; + __entry->queued = queued; + ), + TP_printk("req %p length %u queued %u", + __entry->req, + __entry->length, + __entry->queued) +); + +DEFINE_EVENT(uvcg_video_req, uvcg_video_complete, + TP_PROTO(struct usb_request *req, u32 queued), + TP_ARGS(req, queued) +); + +DEFINE_EVENT(uvcg_video_req, uvcg_video_queue, + TP_PROTO(struct usb_request *req, u32 queued), + TP_ARGS(req, queued) +); + +#endif /* __UVCG_TRACE_H */ + +/* this part has to be here */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE uvc_trace + +#include <trace/define_trace.h> diff --git a/drivers/usb/gadget/function/uvc_v4l2.c b/drivers/usb/gadget/function/uvc_v4l2.c index 3f0a9795c0d4..fd4b998ccd16 100644 --- a/drivers/usb/gadget/function/uvc_v4l2.c +++ b/drivers/usb/gadget/function/uvc_v4l2.c @@ -31,14 +31,23 @@ static const struct uvc_format_desc *to_uvc_format(struct uvcg_format *uformat) { char guid[16] = UVC_GUID_FORMAT_MJPEG; const struct uvc_format_desc *format; - struct uvcg_uncompressed *unc; if (uformat->type == UVCG_UNCOMPRESSED) { + struct uvcg_uncompressed *unc; + unc = to_uvcg_uncompressed(&uformat->group.cg_item); if (!unc) return ERR_PTR(-EINVAL); memcpy(guid, unc->desc.guidFormat, sizeof(guid)); + } else if (uformat->type == UVCG_FRAMEBASED) { + struct uvcg_framebased *unc; + + unc = to_uvcg_framebased(&uformat->group.cg_item); + if (!unc) + return ERR_PTR(-EINVAL); + + memcpy(guid, unc->desc.guidFormat, sizeof(guid)); } format = uvc_format_by_guid(guid); @@ -121,6 +130,9 @@ static struct uvcg_format *find_format_by_pix(struct uvc_device *uvc, list_for_each_entry(format, &uvc->header->formats, entry) { const struct uvc_format_desc *fmtdesc = to_uvc_format(format->fmt); + if (IS_ERR(fmtdesc)) + continue; + if (fmtdesc->fcc == pixelformat) { uformat = format->fmt; break; @@ -240,6 +252,7 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt) struct uvc_video *video = &uvc->video; struct uvcg_format *uformat; struct uvcg_frame *uframe; + const struct uvc_format_desc *fmtdesc; u8 *fcc; if (fmt->type != video->queue.queue.type) @@ -260,12 +273,29 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt) if (!uframe) return -EINVAL; - fmt->fmt.pix.width = uframe->frame.w_width; - fmt->fmt.pix.height = uframe->frame.w_height; + if (uformat->type == UVCG_UNCOMPRESSED) { + struct uvcg_uncompressed *u = + to_uvcg_uncompressed(&uformat->group.cg_item); + if (!u) + return 0; + + v4l2_fill_pixfmt(&fmt->fmt.pix, fmt->fmt.pix.pixelformat, + uframe->frame.w_width, uframe->frame.w_height); + + if (fmt->fmt.pix.sizeimage != (uvc_v4l2_get_bytesperline(uformat, uframe) * + uframe->frame.w_height)) + return -EINVAL; + } else { + fmt->fmt.pix.width = uframe->frame.w_width; + fmt->fmt.pix.height = uframe->frame.w_height; + fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(uformat, uframe); + fmt->fmt.pix.sizeimage = uvc_get_frame_size(uformat, uframe); + fmtdesc = to_uvc_format(uformat); + if (IS_ERR(fmtdesc)) + return PTR_ERR(fmtdesc); + fmt->fmt.pix.pixelformat = fmtdesc->fcc; + } fmt->fmt.pix.field = V4L2_FIELD_NONE; - fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(uformat, uframe); - fmt->fmt.pix.sizeimage = uvc_get_frame_size(uformat, uframe); - fmt->fmt.pix.pixelformat = to_uvc_format(uformat)->fcc; fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; fmt->fmt.pix.priv = 0; @@ -293,6 +323,56 @@ uvc_v4l2_set_format(struct file *file, void *fh, struct v4l2_format *fmt) return ret; } +static int uvc_v4l2_g_parm(struct file *file, void *fh, + struct v4l2_streamparm *parm) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_video *video = &uvc->video; + struct v4l2_fract timeperframe; + + if (!V4L2_TYPE_IS_OUTPUT(parm->type)) + return -EINVAL; + + /* Return the actual frame period. */ + timeperframe.numerator = video->interval; + timeperframe.denominator = 10000000; + v4l2_simplify_fraction(&timeperframe.numerator, + &timeperframe.denominator, 8, 333); + + uvcg_dbg(&uvc->func, "Getting frame interval of %u/%u (%u)\n", + timeperframe.numerator, timeperframe.denominator, + video->interval); + + parm->parm.output.timeperframe = timeperframe; + parm->parm.output.capability = V4L2_CAP_TIMEPERFRAME; + + return 0; +} + +static int uvc_v4l2_s_parm(struct file *file, void *fh, + struct v4l2_streamparm *parm) +{ + struct video_device *vdev = video_devdata(file); + struct uvc_device *uvc = video_get_drvdata(vdev); + struct uvc_video *video = &uvc->video; + struct v4l2_fract timeperframe; + + if (!V4L2_TYPE_IS_OUTPUT(parm->type)) + return -EINVAL; + + timeperframe = parm->parm.output.timeperframe; + + video->interval = v4l2_fraction_to_interval(timeperframe.numerator, + timeperframe.denominator); + + uvcg_dbg(&uvc->func, "Setting frame interval to %u/%u (%u)\n", + timeperframe.numerator, timeperframe.denominator, + video->interval); + + return 0; +} + static int uvc_v4l2_enum_frameintervals(struct file *file, void *fh, struct v4l2_frmivalenum *fival) @@ -375,6 +455,9 @@ uvc_v4l2_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f) return -EINVAL; fmtdesc = to_uvc_format(uformat); + if (IS_ERR(fmtdesc)) + return PTR_ERR(fmtdesc); + f->pixelformat = fmtdesc->fcc; return 0; @@ -443,7 +526,7 @@ uvc_v4l2_streamon(struct file *file, void *fh, enum v4l2_buf_type type) return -EINVAL; /* Enable UVC video. */ - ret = uvcg_video_enable(video, 1); + ret = uvcg_video_enable(video); if (ret < 0) return ret; @@ -451,7 +534,7 @@ uvc_v4l2_streamon(struct file *file, void *fh, enum v4l2_buf_type type) * Complete the alternate setting selection setup phase now that * userspace is ready to provide video frames. */ - uvc_function_setup_continue(uvc); + uvc_function_setup_continue(uvc, 0); uvc->state = UVC_STATE_STREAMING; return 0; @@ -463,11 +546,21 @@ uvc_v4l2_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) struct video_device *vdev = video_devdata(file); struct uvc_device *uvc = video_get_drvdata(vdev); struct uvc_video *video = &uvc->video; + int ret = 0; if (type != video->queue.queue.type) return -EINVAL; - return uvcg_video_enable(video, 0); + ret = uvcg_video_disable(video); + if (ret < 0) + return ret; + + if (uvc->state != UVC_STATE_STREAMING) + return 0; + + uvc->state = UVC_STATE_CONNECTED; + uvc_function_setup_continue(uvc, 1); + return 0; } static int @@ -500,7 +593,7 @@ uvc_v4l2_subscribe_event(struct v4l2_fh *fh, static void uvc_v4l2_disable(struct uvc_device *uvc) { uvc_function_disconnect(uvc); - uvcg_video_enable(&uvc->video, 0); + uvcg_video_disable(&uvc->video); uvcg_free_buffers(&uvc->video.queue); uvc->func_connected = false; wake_up_interruptible(&uvc->func_connected_queue); @@ -556,6 +649,8 @@ const struct v4l2_ioctl_ops uvc_v4l2_ioctl_ops = { .vidioc_dqbuf = uvc_v4l2_dqbuf, .vidioc_streamon = uvc_v4l2_streamon, .vidioc_streamoff = uvc_v4l2_streamoff, + .vidioc_s_parm = uvc_v4l2_s_parm, + .vidioc_g_parm = uvc_v4l2_g_parm, .vidioc_subscribe_event = uvc_v4l2_subscribe_event, .vidioc_unsubscribe_event = uvc_v4l2_unsubscribe_event, .vidioc_default = uvc_v4l2_ioctl_default, @@ -577,10 +672,9 @@ uvc_v4l2_open(struct file *file) return -ENOMEM; v4l2_fh_init(&handle->vfh, vdev); - v4l2_fh_add(&handle->vfh); + v4l2_fh_add(&handle->vfh, file); handle->device = &uvc->video; - file->private_data = &handle->vfh; return 0; } @@ -590,7 +684,7 @@ uvc_v4l2_release(struct file *file) { struct video_device *vdev = video_devdata(file); struct uvc_device *uvc = video_get_drvdata(vdev); - struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data); + struct uvc_file_handle *handle = file_to_uvc_file_handle(file); struct uvc_video *video = handle->device; mutex_lock(&video->mutex); @@ -598,8 +692,7 @@ uvc_v4l2_release(struct file *file) uvc_v4l2_disable(uvc); mutex_unlock(&video->mutex); - file->private_data = NULL; - v4l2_fh_del(&handle->vfh); + v4l2_fh_del(&handle->vfh, file); v4l2_fh_exit(&handle->vfh); kfree(handle); @@ -647,4 +740,3 @@ const struct v4l2_file_operations uvc_v4l2_fops = { .get_unmapped_area = uvcg_v4l2_get_unmapped_area, #endif }; - diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c index 91af3b1ef0d4..fb77b0b21790 100644 --- a/drivers/usb/gadget/function/uvc_video.c +++ b/drivers/usb/gadget/function/uvc_video.c @@ -12,13 +12,14 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/video.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <media/v4l2-dev.h> #include "uvc.h" #include "uvc_queue.h" #include "uvc_video.h" +#include "uvc_trace.h" /* -------------------------------------------------------------------------- * Video codecs @@ -35,6 +36,9 @@ uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, data[1] = UVC_STREAM_EOH | video->fid; + if (video->queue.flags & UVC_QUEUE_DROP_INCOMPLETE) + data[1] |= UVC_STREAM_ERR; + if (video->queue.buf_used == 0 && ts.tv_sec) { /* dwClockFrequency is 48 MHz */ u32 pts = ((u64)ts.tv_sec * USEC_PER_SEC + ts.tv_nsec / NSEC_PER_USEC) * 48; @@ -75,7 +79,7 @@ uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, /* Copy video data to the USB buffer. */ mem = buf->mem + queue->buf_used; - nbytes = min((unsigned int)len, buf->bytesused - queue->buf_used); + nbytes = min_t(unsigned int, len, buf->bytesused - queue->buf_used); memcpy(data, mem, nbytes); queue->buf_used += nbytes; @@ -101,7 +105,7 @@ uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, } /* Process video data. */ - len = min((int)(video->max_payload_size - video->payload_size), len); + len = min_t(int, video->max_payload_size - video->payload_size, len); ret = uvc_video_encode_data(video, buf, mem, len); video->payload_size += ret; @@ -133,7 +137,7 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video, unsigned int pending = buf->bytesused - video->queue.buf_used; struct uvc_request *ureq = req->context; struct scatterlist *sg, *iter; - unsigned int len = video->req_size; + unsigned int len = buf->req_payload_size; unsigned int sg_left, part = 0; unsigned int i; int header_len; @@ -143,15 +147,15 @@ uvc_video_encode_isoc_sg(struct usb_request *req, struct uvc_video *video, /* Init the header. */ header_len = uvc_video_encode_header(video, buf, ureq->header, - video->req_size); + buf->req_payload_size); sg_set_buf(sg, ureq->header, header_len); len -= header_len; if (pending <= len) len = pending; - req->length = (len == pending) ? - len + header_len : video->req_size; + req->length = (len == pending) ? len + header_len : + buf->req_payload_size; /* Init the pending sgs with payload */ sg = sg_next(sg); @@ -199,7 +203,7 @@ uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, { void *mem = req->buf; struct uvc_request *ureq = req->context; - int len = video->req_size; + int len = buf->req_payload_size; int ret; /* Add the header. */ @@ -211,7 +215,7 @@ uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, ret = uvc_video_encode_data(video, buf, mem, len); len -= ret; - req->length = video->req_size - len; + req->length = buf->req_payload_size - len; if (buf->bytesused == video->queue.buf_used || video->queue.flags & UVC_QUEUE_DROP_INCOMPLETE) { @@ -227,6 +231,28 @@ uvc_video_encode_isoc(struct usb_request *req, struct uvc_video *video, * Request handling */ +/* + * Callers must take care to hold req_lock when this function may be called + * from multiple threads. For example, when frames are streaming to the host. + */ +static void +uvc_video_free_request(struct uvc_request *ureq, struct usb_ep *ep) +{ + sg_free_table(&ureq->sgt); + if (ureq->req && ep) { + usb_ep_free_request(ep, ureq->req); + ureq->req = NULL; + } + + kfree(ureq->req_buffer); + ureq->req_buffer = NULL; + + if (!list_empty(&ureq->list)) + list_del_init(&ureq->list); + + kfree(ureq); +} + static int uvcg_video_ep_queue(struct uvc_video *video, struct usb_request *req) { int ret; @@ -244,25 +270,98 @@ static int uvcg_video_ep_queue(struct uvc_video *video, struct usb_request *req) } } + atomic_inc(&video->queued); + + trace_uvcg_video_queue(req, atomic_read(&video->queued)); + return ret; } +/* This function must be called with video->req_lock held. */ +static int uvcg_video_usb_req_queue(struct uvc_video *video, + struct usb_request *req, bool queue_to_ep) +{ + bool is_bulk = video->max_payload_size; + struct list_head *list = NULL; + + if (!video->is_enabled) + return -ENODEV; + + if (queue_to_ep) { + struct uvc_request *ureq = req->context; + /* + * With USB3 handling more requests at a higher speed, we can't + * afford to generate an interrupt for every request. Decide to + * interrupt: + * + * - When no more requests are available in the free queue, as + * this may be our last chance to refill the endpoint's + * request queue. + * + * - When this is request is the last request for the video + * buffer, as we want to start sending the next video buffer + * ASAP in case it doesn't get started already in the next + * iteration of this loop. + * + * - Four times over the length of the requests queue (as + * indicated by video->uvc_num_requests), as a trade-off + * between latency and interrupt load. + */ + if (list_empty(&video->req_free) || ureq->last_buf || + !(video->req_int_count % + min(DIV_ROUND_UP(video->uvc_num_requests, 4), UVCG_REQ_MAX_INT_COUNT))) { + video->req_int_count = 0; + req->no_interrupt = 0; + } else { + req->no_interrupt = 1; + } + video->req_int_count++; + return uvcg_video_ep_queue(video, req); + } + /* + * If we're not queuing to the ep, for isoc we're queuing + * to the req_ready list, otherwise req_free. + */ + list = is_bulk ? &video->req_free : &video->req_ready; + list_add_tail(&req->list, list); + return 0; +} + static void uvc_video_complete(struct usb_ep *ep, struct usb_request *req) { struct uvc_request *ureq = req->context; struct uvc_video *video = ureq->video; struct uvc_video_queue *queue = &video->queue; - struct uvc_device *uvc = video->uvc; + struct uvc_buffer *last_buf; unsigned long flags; + spin_lock_irqsave(&video->req_lock, flags); + atomic_dec(&video->queued); + if (!video->is_enabled) { + /* + * When is_enabled is false, uvcg_video_disable() ensures + * that in-flight uvc_buffers are returned, so we can + * safely call free_request without worrying about + * last_buf. + */ + uvc_video_free_request(ureq, ep); + spin_unlock_irqrestore(&video->req_lock, flags); + return; + } + + last_buf = ureq->last_buf; + ureq->last_buf = NULL; + spin_unlock_irqrestore(&video->req_lock, flags); + switch (req->status) { case 0: break; case -EXDEV: uvcg_dbg(&video->uvc->func, "VS request missed xfer.\n"); - queue->flags |= UVC_QUEUE_DROP_INCOMPLETE; + if (req->length != 0) + queue->flags |= UVC_QUEUE_DROP_INCOMPLETE; break; case -ESHUTDOWN: /* disconnect from host. */ @@ -277,90 +376,218 @@ uvc_video_complete(struct usb_ep *ep, struct usb_request *req) uvcg_queue_cancel(queue, 0); } - if (ureq->last_buf) { - uvcg_complete_buffer(&video->queue, ureq->last_buf); - ureq->last_buf = NULL; + if (last_buf) { + spin_lock_irqsave(&queue->irqlock, flags); + uvcg_complete_buffer(queue, last_buf); + spin_unlock_irqrestore(&queue->irqlock, flags); } spin_lock_irqsave(&video->req_lock, flags); + /* + * Video stream might have been disabled while we were + * processing the current usb_request. So make sure + * we're still streaming before queueing the usb_request + * back to req_free + */ + if (!video->is_enabled) { + uvc_video_free_request(ureq, ep); + spin_unlock_irqrestore(&video->req_lock, flags); + uvcg_queue_cancel(queue, 0); + + return; + } + list_add_tail(&req->list, &video->req_free); + /* + * Queue work to the wq as well since it is possible that a + * buffer may not have been completely encoded with the set of + * in-flight usb requests for whih the complete callbacks are + * firing. + * In that case, if we do not queue work to the worker thread, + * the buffer will never be marked as complete - and therefore + * not be returned to userpsace. As a result, + * dequeue -> queue -> dequeue flow of uvc buffers will not + * happen. Since there are is a new free request wake up the pump. + */ + queue_work(video->async_wq, &video->pump); + + trace_uvcg_video_complete(req, atomic_read(&video->queued)); + spin_unlock_irqrestore(&video->req_lock, flags); - if (uvc->state == UVC_STATE_STREAMING) - queue_work(video->async_wq, &video->pump); + kthread_queue_work(video->kworker, &video->hw_submit); } -static int -uvc_video_free_requests(struct uvc_video *video) +static void uvcg_video_hw_submit(struct kthread_work *work) { - unsigned int i; + struct uvc_video *video = container_of(work, struct uvc_video, hw_submit); + bool is_bulk = video->max_payload_size; + unsigned long flags; + struct usb_request *req; + int ret = 0; - if (video->ureq) { - for (i = 0; i < video->uvc_num_requests; ++i) { - sg_free_table(&video->ureq[i].sgt); + while (true) { + if (!video->ep->enabled) + return; + spin_lock_irqsave(&video->req_lock, flags); + /* + * Here we check whether any request is available in the ready + * list. If it is, queue it to the ep and add the current + * usb_request to the req_free list - for video_pump to fill in. + * Otherwise, just use the current usb_request to queue a 0 + * length request to the ep. Since we always add to the req_free + * list if we dequeue from the ready list, there will never + * be a situation where the req_free list is completely out of + * requests and cannot recover. + */ + if (!list_empty(&video->req_ready)) { + req = list_first_entry(&video->req_ready, + struct usb_request, list); + } else { + if (list_empty(&video->req_free) || + (atomic_read(&video->queued) > UVCG_REQ_MAX_ZERO_COUNT)) { + spin_unlock_irqrestore(&video->req_lock, flags); - if (video->ureq[i].req) { - usb_ep_free_request(video->ep, video->ureq[i].req); - video->ureq[i].req = NULL; + return; } + req = list_first_entry(&video->req_free, struct usb_request, + list); + req->length = 0; + } + list_del(&req->list); + + /* + * Queue to the endpoint. The actual queueing to ep will + * only happen on one thread - the async_wq for bulk endpoints + * and this thread for isoc endpoints. + */ + ret = uvcg_video_usb_req_queue(video, req, !is_bulk); + if (ret < 0) { + /* + * Endpoint error, but the stream is still enabled. + * Put request back in req_free for it to be cleaned + * up later. + */ + list_add_tail(&req->list, &video->req_free); + /* + * There is a new free request - wake up the pump. + */ + queue_work(video->async_wq, &video->pump); - if (video->ureq[i].req_buffer) { - kfree(video->ureq[i].req_buffer); - video->ureq[i].req_buffer = NULL; - } } - kfree(video->ureq); - video->ureq = NULL; + spin_unlock_irqrestore(&video->req_lock, flags); } +} + +static int +uvc_video_free_requests(struct uvc_video *video) +{ + struct uvc_request *ureq, *temp; + + list_for_each_entry_safe(ureq, temp, &video->ureqs, list) + uvc_video_free_request(ureq, video->ep); + INIT_LIST_HEAD(&video->ureqs); INIT_LIST_HEAD(&video->req_free); - video->req_size = 0; + INIT_LIST_HEAD(&video->req_ready); return 0; } +static void +uvc_video_prep_requests(struct uvc_video *video) +{ + struct uvc_device *uvc = container_of(video, struct uvc_device, video); + struct usb_composite_dev *cdev = uvc->func.config->cdev; + unsigned int interval_duration = video->ep->desc->bInterval * 1250; + unsigned int max_req_size, req_size, header_size; + unsigned int nreq; + + max_req_size = video->ep->maxpacket + * max_t(unsigned int, video->ep->maxburst, 1) + * (video->ep->mult); + + if (!usb_endpoint_xfer_isoc(video->ep->desc)) { + video->req_size = max_req_size; + video->reqs_per_frame = video->uvc_num_requests = + DIV_ROUND_UP(video->imagesize, max_req_size); + + return; + } + + if (cdev->gadget->speed < USB_SPEED_HIGH) + interval_duration = video->ep->desc->bInterval * 10000; + + nreq = DIV_ROUND_UP(video->interval, interval_duration); + + header_size = nreq * UVCG_REQUEST_HEADER_LEN; + + req_size = DIV_ROUND_UP(video->imagesize + header_size, nreq); + + if (req_size > max_req_size) { + /* The prepared interval length and expected buffer size + * is not possible to stream with the currently configured + * isoc bandwidth. Fallback to the maximum. + */ + req_size = max_req_size; + } + video->req_size = req_size; + + /* We need to compensate the amount of requests to be + * allocated with the maximum amount of zero length requests. + * Since it is possible that hw_submit will initially + * enqueue some zero length requests and we then will not be + * able to fully encode one frame. + */ + video->uvc_num_requests = nreq + UVCG_REQ_MAX_ZERO_COUNT; + video->reqs_per_frame = nreq; +} + static int uvc_video_alloc_requests(struct uvc_video *video) { - unsigned int req_size; + struct uvc_request *ureq; unsigned int i; int ret = -ENOMEM; - BUG_ON(video->req_size); + /* + * calculate in uvc_video_prep_requests + * - video->uvc_num_requests + * - video->req_size + */ + uvc_video_prep_requests(video); - req_size = video->ep->maxpacket - * max_t(unsigned int, video->ep->maxburst, 1) - * (video->ep->mult); + for (i = 0; i < video->uvc_num_requests; i++) { + ureq = kzalloc(sizeof(struct uvc_request), GFP_KERNEL); + if (ureq == NULL) + goto error; + + INIT_LIST_HEAD(&ureq->list); - video->ureq = kcalloc(video->uvc_num_requests, sizeof(struct uvc_request), GFP_KERNEL); - if (video->ureq == NULL) - return -ENOMEM; + list_add_tail(&ureq->list, &video->ureqs); - for (i = 0; i < video->uvc_num_requests; ++i) { - video->ureq[i].req_buffer = kmalloc(req_size, GFP_KERNEL); - if (video->ureq[i].req_buffer == NULL) + ureq->req_buffer = kmalloc(video->req_size, GFP_KERNEL); + if (ureq->req_buffer == NULL) goto error; - video->ureq[i].req = usb_ep_alloc_request(video->ep, GFP_KERNEL); - if (video->ureq[i].req == NULL) + ureq->req = usb_ep_alloc_request(video->ep, GFP_KERNEL); + if (ureq->req == NULL) goto error; - video->ureq[i].req->buf = video->ureq[i].req_buffer; - video->ureq[i].req->length = 0; - video->ureq[i].req->complete = uvc_video_complete; - video->ureq[i].req->context = &video->ureq[i]; - video->ureq[i].video = video; - video->ureq[i].last_buf = NULL; + ureq->req->buf = ureq->req_buffer; + ureq->req->length = 0; + ureq->req->complete = uvc_video_complete; + ureq->req->context = ureq; + ureq->video = video; + ureq->last_buf = NULL; - list_add_tail(&video->ureq[i].req->list, &video->req_free); + list_add_tail(&ureq->req->list, &video->req_free); /* req_size/PAGE_SIZE + 1 for overruns and + 1 for header */ - sg_alloc_table(&video->ureq[i].sgt, - DIV_ROUND_UP(req_size - UVCG_REQUEST_HEADER_LEN, + sg_alloc_table(&ureq->sgt, + DIV_ROUND_UP(video->req_size - UVCG_REQUEST_HEADER_LEN, PAGE_SIZE) + 2, GFP_KERNEL); } - video->req_size = req_size; - return 0; error: @@ -387,16 +614,18 @@ static void uvcg_video_pump(struct work_struct *work) struct usb_request *req = NULL; struct uvc_buffer *buf; unsigned long flags; - bool buf_done; - int ret; + int ret = 0; + + while (true) { + if (!video->ep->enabled) + return; - while (video->ep->enabled) { /* - * Retrieve the first available USB request, protected by the - * request lock. + * Check is_enabled and retrieve the first available USB + * request, protected by the request lock. */ spin_lock_irqsave(&video->req_lock, flags); - if (list_empty(&video->req_free)) { + if (!video->is_enabled || list_empty(&video->req_free)) { spin_unlock_irqrestore(&video->req_lock, flags); return; } @@ -411,19 +640,7 @@ static void uvcg_video_pump(struct work_struct *work) */ spin_lock_irqsave(&queue->irqlock, flags); buf = uvcg_queue_head(queue); - - if (buf != NULL) { - video->encode(req, video, buf); - buf_done = buf->state == UVC_BUF_STATE_DONE; - } else if (!(queue->flags & UVC_QUEUE_DISCONNECTED) && !is_bulk) { - /* - * No video buffer available; the queue is still connected and - * we're transferring over ISOC. Queue a 0 length request to - * prevent missed ISOC transfers. - */ - req->length = 0; - buf_done = false; - } else { + if (!buf) { /* * Either the queue has been disconnected or no video buffer * available for bulk transfer. Either way, stop processing @@ -433,62 +650,117 @@ static void uvcg_video_pump(struct work_struct *work) break; } - /* - * With USB3 handling more requests at a higher speed, we can't - * afford to generate an interrupt for every request. Decide to - * interrupt: - * - * - When no more requests are available in the free queue, as - * this may be our last chance to refill the endpoint's - * request queue. - * - * - When this is request is the last request for the video - * buffer, as we want to start sending the next video buffer - * ASAP in case it doesn't get started already in the next - * iteration of this loop. - * - * - Four times over the length of the requests queue (as - * indicated by video->uvc_num_requests), as a trade-off - * between latency and interrupt load. - */ - if (list_empty(&video->req_free) || buf_done || - !(video->req_int_count % - DIV_ROUND_UP(video->uvc_num_requests, 4))) { - video->req_int_count = 0; - req->no_interrupt = 0; - } else { - req->no_interrupt = 1; - } + video->encode(req, video, buf); - /* Queue the USB request */ - ret = uvcg_video_ep_queue(video, req); spin_unlock_irqrestore(&queue->irqlock, flags); + spin_lock_irqsave(&video->req_lock, flags); + /* For bulk end points we queue from the worker thread + * since we would preferably not want to wait on requests + * to be ready, in the uvcg_video_complete() handler. + * For isoc endpoints we add the request to the ready list + * and only queue it to the endpoint from the complete handler. + */ + ret = uvcg_video_usb_req_queue(video, req, is_bulk); + spin_unlock_irqrestore(&video->req_lock, flags); + if (ret < 0) { uvcg_queue_cancel(queue, 0); break; } + } + spin_lock_irqsave(&video->req_lock, flags); + if (video->is_enabled) + list_add_tail(&req->list, &video->req_free); + else + uvc_video_free_request(req->context, video->ep); + spin_unlock_irqrestore(&video->req_lock, flags); +} - /* Endpoint now owns the request */ - req = NULL; - video->req_int_count++; +/* + * Disable the video stream + */ +int +uvcg_video_disable(struct uvc_video *video) +{ + unsigned long flags; + struct list_head inflight_bufs; + struct usb_request *req, *temp; + struct uvc_buffer *buf, *btemp; + struct uvc_request *ureq, *utemp; + + if (video->ep == NULL) { + uvcg_info(&video->uvc->func, + "Video disable failed, device is uninitialized.\n"); + return -ENODEV; } - if (!req) - return; + INIT_LIST_HEAD(&inflight_bufs); + spin_lock_irqsave(&video->req_lock, flags); + video->is_enabled = false; + + /* + * Remove any in-flight buffers from the uvc_requests + * because we want to return them before cancelling the + * queue. This ensures that we aren't stuck waiting for + * all complete callbacks to come through before disabling + * vb2 queue. + */ + list_for_each_entry(ureq, &video->ureqs, list) { + if (ureq->last_buf) { + list_add_tail(&ureq->last_buf->queue, &inflight_bufs); + ureq->last_buf = NULL; + } + } + spin_unlock_irqrestore(&video->req_lock, flags); + + cancel_work_sync(&video->pump); + uvcg_queue_cancel(&video->queue, 0); spin_lock_irqsave(&video->req_lock, flags); - list_add_tail(&req->list, &video->req_free); + /* + * Remove all uvc_requests from ureqs with list_del_init + * This lets uvc_video_free_request correctly identify + * if the uvc_request is attached to a list or not when freeing + * memory. + */ + list_for_each_entry_safe(ureq, utemp, &video->ureqs, list) + list_del_init(&ureq->list); + + list_for_each_entry_safe(req, temp, &video->req_free, list) { + list_del(&req->list); + uvc_video_free_request(req->context, video->ep); + } + + list_for_each_entry_safe(req, temp, &video->req_ready, list) { + list_del(&req->list); + uvc_video_free_request(req->context, video->ep); + } + + INIT_LIST_HEAD(&video->ureqs); + INIT_LIST_HEAD(&video->req_free); + INIT_LIST_HEAD(&video->req_ready); spin_unlock_irqrestore(&video->req_lock, flags); - return; + + /* + * Return all the video buffers before disabling the queue. + */ + spin_lock_irqsave(&video->queue.irqlock, flags); + list_for_each_entry_safe(buf, btemp, &inflight_bufs, queue) { + list_del(&buf->queue); + uvcg_complete_buffer(&video->queue, buf); + } + spin_unlock_irqrestore(&video->queue.irqlock, flags); + + uvcg_queue_enable(&video->queue, 0); + return 0; } /* - * Enable or disable the video stream. + * Enable the video stream. */ -int uvcg_video_enable(struct uvc_video *video, int enable) +int uvcg_video_enable(struct uvc_video *video) { - unsigned int i; int ret; if (video->ep == NULL) { @@ -497,18 +769,13 @@ int uvcg_video_enable(struct uvc_video *video, int enable) return -ENODEV; } - if (!enable) { - cancel_work_sync(&video->pump); - uvcg_queue_cancel(&video->queue, 0); - - for (i = 0; i < video->uvc_num_requests; ++i) - if (video->ureq && video->ureq[i].req) - usb_ep_dequeue(video->ep, video->ureq[i].req); - - uvc_video_free_requests(video); - uvcg_queue_enable(&video->queue, 0); - return 0; - } + /* + * Safe to access request related fields without req_lock because + * this is the only thread currently active, and no other + * request handling thread will become active until this function + * returns. + */ + video->is_enabled = true; if ((ret = uvcg_queue_enable(&video->queue, 1)) < 0) return ret; @@ -525,6 +792,9 @@ int uvcg_video_enable(struct uvc_video *video, int enable) video->req_int_count = 0; + atomic_set(&video->queued, 0); + + kthread_queue_work(video->kworker, &video->hw_submit); queue_work(video->async_wq, &video->pump); return ret; @@ -535,7 +805,10 @@ int uvcg_video_enable(struct uvc_video *video, int enable) */ int uvcg_video_init(struct uvc_video *video, struct uvc_device *uvc) { + video->is_enabled = false; + INIT_LIST_HEAD(&video->ureqs); INIT_LIST_HEAD(&video->req_free); + INIT_LIST_HEAD(&video->req_ready); spin_lock_init(&video->req_lock); INIT_WORK(&video->pump, uvcg_video_pump); @@ -544,12 +817,24 @@ int uvcg_video_init(struct uvc_video *video, struct uvc_device *uvc) if (!video->async_wq) return -EINVAL; + /* Allocate a kthread for asynchronous hw submit handler. */ + video->kworker = kthread_run_worker(0, "UVCG"); + if (IS_ERR(video->kworker)) { + uvcg_err(&video->uvc->func, "failed to create UVCG kworker\n"); + return PTR_ERR(video->kworker); + } + + kthread_init_work(&video->hw_submit, uvcg_video_hw_submit); + + sched_set_fifo(video->kworker->task); + video->uvc = uvc; video->fcc = V4L2_PIX_FMT_YUYV; video->bpp = 16; video->width = 320; video->height = 240; video->imagesize = 320 * 240 * 2; + video->interval = 666666; /* Initialize the video buffers queue. */ uvcg_queue_init(&video->queue, uvc->v4l2_dev.dev->parent, diff --git a/drivers/usb/gadget/function/uvc_video.h b/drivers/usb/gadget/function/uvc_video.h index 03adeefa343b..8ef6259741f1 100644 --- a/drivers/usb/gadget/function/uvc_video.h +++ b/drivers/usb/gadget/function/uvc_video.h @@ -14,7 +14,8 @@ struct uvc_video; -int uvcg_video_enable(struct uvc_video *video, int enable); +int uvcg_video_enable(struct uvc_video *video); +int uvcg_video_disable(struct uvc_video *video); int uvcg_video_init(struct uvc_video *video, struct uvc_device *uvc); diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c index b62e45235e8e..d70fb5bc2357 100644 --- a/drivers/usb/gadget/legacy/dbgp.c +++ b/drivers/usb/gadget/legacy/dbgp.c @@ -434,6 +434,7 @@ static void __exit dbgp_exit(void) } MODULE_AUTHOR("Stephane Duverger"); +MODULE_DESCRIPTION("EHCI Debug Port device gadget"); MODULE_LICENSE("GPL"); module_init(dbgp_init); module_exit(dbgp_exit); diff --git a/drivers/usb/gadget/legacy/g_ffs.c b/drivers/usb/gadget/legacy/g_ffs.c index a9544fea8723..578556422ea3 100644 --- a/drivers/usb/gadget/legacy/g_ffs.c +++ b/drivers/usb/gadget/legacy/g_ffs.c @@ -188,7 +188,7 @@ static int __init gfs_init(void) /* * Allocate in one chunk for easier maintenance */ - f_ffs[0] = kcalloc(func_num * N_CONF, sizeof(*f_ffs), GFP_KERNEL); + f_ffs[0] = kcalloc(func_num * N_CONF, sizeof(*f_ffs[0]), GFP_KERNEL); if (!f_ffs[0]) { ret = -ENOMEM; goto no_func; diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c index 265c392810d7..e4a419b19f45 100644 --- a/drivers/usb/gadget/legacy/gmidi.c +++ b/drivers/usb/gadget/legacy/gmidi.c @@ -31,6 +31,7 @@ /*-------------------------------------------------------------------------*/ MODULE_AUTHOR("Ben Williamson"); +MODULE_DESCRIPTION("USB MIDI Gadget Driver"); MODULE_LICENSE("GPL v2"); static const char longname[] = "MIDI Gadget"; diff --git a/drivers/usb/gadget/legacy/hid.c b/drivers/usb/gadget/legacy/hid.c index 4ca67b2f8f24..3684546e8801 100644 --- a/drivers/usb/gadget/legacy/hid.c +++ b/drivers/usb/gadget/legacy/hid.c @@ -261,7 +261,7 @@ static struct usb_composite_driver hidg_driver = { }; static struct platform_driver hidg_plat_driver = { - .remove_new = hidg_plat_driver_remove, + .remove = hidg_plat_driver_remove, .driver = { .name = "hidg", }, diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index ce9e31f3d26b..62566a8e7451 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -20,6 +20,7 @@ #include <linux/uaccess.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/poll.h> #include <linux/kthread.h> #include <linux/aio.h> @@ -31,6 +32,12 @@ #include <linux/usb/gadgetfs.h> #include <linux/usb/gadget.h> +#include <linux/usb/composite.h> /* for USB_GADGET_DELAYED_STATUS */ + +/* Undef helpers from linux/usb/composite.h as gadgetfs redefines them */ +#undef DBG +#undef ERROR +#undef INFO /* @@ -143,7 +150,6 @@ struct dev_data { void *buf; wait_queue_head_t wait; struct super_block *sb; - struct dentry *dentry; /* except this scratch i/o buffer for ep0 */ u8 rbuf[RBUF_SIZE]; @@ -201,7 +207,6 @@ struct ep_data { struct usb_endpoint_descriptor desc, hs_desc; struct list_head epfiles; wait_queue_head_t wait; - struct dentry *dentry; }; static inline void get_ep (struct ep_data *data) @@ -699,7 +704,6 @@ static const struct file_operations ep_io_operations = { .open = ep_open, .release = ep_release, - .llseek = no_llseek, .unlocked_ioctl = ep_ioctl, .read_iter = ep_read_iter, .write_iter = ep_write_iter, @@ -1177,7 +1181,7 @@ ep0_fasync (int f, struct file *fd, int on) { struct dev_data *dev = fd->private_data; // caller must F_SETOWN before signal delivery happens - VDEBUG (dev, "%s %s\n", __func__, on ? "on" : "off"); + VDEBUG(dev, "%s %s\n", __func__, str_on_off(on)); return fasync_helper (f, fd, on, &dev->fasync); } @@ -1511,7 +1515,16 @@ delegate: event->u.setup = *ctrl; ep0_readable (dev); spin_unlock (&dev->lock); - return 0; + /* + * Return USB_GADGET_DELAYED_STATUS as a workaround to + * stop some UDC drivers (e.g. dwc3) from automatically + * proceeding with the status stage for 0-length + * transfers. + * Should be removed once all UDC drivers are fixed to + * always delay the status stage until a response is + * queued to EP0. + */ + return w_length == 0 ? USB_GADGET_DELAYED_STATUS : 0; } } @@ -1546,18 +1559,12 @@ static void destroy_ep_files (struct dev_data *dev) spin_lock_irq (&dev->lock); while (!list_empty(&dev->epfiles)) { struct ep_data *ep; - struct inode *parent; - struct dentry *dentry; /* break link to FS */ ep = list_first_entry (&dev->epfiles, struct ep_data, epfiles); list_del_init (&ep->epfiles); spin_unlock_irq (&dev->lock); - dentry = ep->dentry; - ep->dentry = NULL; - parent = d_inode(dentry->d_parent); - /* break link to controller */ mutex_lock(&ep->lock); if (ep->state == STATE_EP_ENABLED) @@ -1568,13 +1575,11 @@ static void destroy_ep_files (struct dev_data *dev) mutex_unlock(&ep->lock); wake_up (&ep->wait); - put_ep (ep); /* break link to dcache */ - inode_lock(parent); - d_delete (dentry); - dput (dentry); - inode_unlock(parent); + simple_remove_by_name(dev->sb->s_root, ep->name, NULL); + + put_ep (ep); spin_lock_irq (&dev->lock); } @@ -1582,14 +1587,14 @@ static void destroy_ep_files (struct dev_data *dev) } -static struct dentry * -gadgetfs_create_file (struct super_block *sb, char const *name, +static int gadgetfs_create_file (struct super_block *sb, char const *name, void *data, const struct file_operations *fops); static int activate_ep_files (struct dev_data *dev) { struct usb_ep *ep; struct ep_data *data; + int err; gadget_for_each_ep (ep, dev->gadget) { @@ -1600,7 +1605,7 @@ static int activate_ep_files (struct dev_data *dev) mutex_init(&data->lock); init_waitqueue_head (&data->wait); - strncpy (data->name, ep->name, sizeof (data->name) - 1); + strscpy(data->name, ep->name); refcount_set (&data->count, 1); data->dev = dev; get_dev (dev); @@ -1612,9 +1617,9 @@ static int activate_ep_files (struct dev_data *dev) if (!data->req) goto enomem1; - data->dentry = gadgetfs_create_file (dev->sb, data->name, + err = gadgetfs_create_file (dev->sb, data->name, data, &ep_io_operations); - if (!data->dentry) + if (err) goto enomem2; list_add_tail (&data->epfiles, &dev->epfiles); } @@ -1924,7 +1929,6 @@ gadget_dev_open (struct inode *inode, struct file *fd) } static const struct file_operations ep0_operations = { - .llseek = no_llseek, .open = gadget_dev_open, .read = ep0_read, @@ -1969,7 +1973,7 @@ gadgetfs_make_inode (struct super_block *sb, inode->i_mode = mode; inode->i_uid = make_kuid(&init_user_ns, default_uid); inode->i_gid = make_kgid(&init_user_ns, default_gid); - inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode); + simple_inode_init_ts(inode); inode->i_private = data; inode->i_fop = fops; } @@ -1979,30 +1983,32 @@ gadgetfs_make_inode (struct super_block *sb, /* creates in fs root directory, so non-renamable and non-linkable. * so inode and dentry are paired, until device reconfig. */ -static struct dentry * -gadgetfs_create_file (struct super_block *sb, char const *name, +static int gadgetfs_create_file (struct super_block *sb, char const *name, void *data, const struct file_operations *fops) { struct dentry *dentry; struct inode *inode; - dentry = d_alloc_name(sb->s_root, name); - if (!dentry) - return NULL; - inode = gadgetfs_make_inode (sb, data, fops, S_IFREG | (default_perm & S_IRWXUGO)); - if (!inode) { - dput(dentry); - return NULL; + if (!inode) + return -ENOMEM; + + dentry = simple_start_creating(sb->s_root, name); + if (IS_ERR(dentry)) { + iput(inode); + return PTR_ERR(dentry); } - d_add (dentry, inode); - return dentry; + + d_make_persistent(dentry, inode); + + simple_done_creating(dentry); + return 0; } static const struct super_operations gadget_fs_operations = { .statfs = simple_statfs, - .drop_inode = generic_delete_inode, + .drop_inode = inode_just_drop, }; static int @@ -2050,8 +2056,8 @@ gadgetfs_fill_super (struct super_block *sb, struct fs_context *fc) goto Enomem; dev->sb = sb; - dev->dentry = gadgetfs_create_file(sb, CHIP, dev, &ep0_operations); - if (!dev->dentry) { + rc = gadgetfs_create_file(sb, CHIP, dev, &ep0_operations); + if (rc) { put_dev(dev); goto Enomem; } @@ -2093,7 +2099,7 @@ static void gadgetfs_kill_sb (struct super_block *sb) { mutex_lock(&sb_mutex); - kill_litter_super (sb); + kill_anon_super (sb); if (the_device) { put_dev (the_device); the_device = NULL; diff --git a/drivers/usb/gadget/legacy/raw_gadget.c b/drivers/usb/gadget/legacy/raw_gadget.c index e549022642e5..46f343ba48b3 100644 --- a/drivers/usb/gadget/legacy/raw_gadget.c +++ b/drivers/usb/gadget/legacy/raw_gadget.c @@ -25,6 +25,7 @@ #include <linux/usb/ch9.h> #include <linux/usb/ch11.h> #include <linux/usb/gadget.h> +#include <linux/usb/composite.h> #include <uapi/linux/usb/raw_gadget.h> @@ -39,6 +40,7 @@ MODULE_LICENSE("GPL"); static DEFINE_IDA(driver_id_numbers); #define DRIVER_DRIVER_NAME_LENGTH_MAX 32 +#define USB_RAW_IO_LENGTH_MAX KMALLOC_MAX_SIZE #define RAW_EVENT_QUEUE_SIZE 16 @@ -64,7 +66,7 @@ static int raw_event_queue_add(struct raw_event_queue *queue, struct usb_raw_event *event; spin_lock_irqsave(&queue->lock, flags); - if (WARN_ON(queue->size >= RAW_EVENT_QUEUE_SIZE)) { + if (queue->size >= RAW_EVENT_QUEUE_SIZE) { spin_unlock_irqrestore(&queue->lock, flags); return -ENOMEM; } @@ -310,9 +312,10 @@ static int gadget_bind(struct usb_gadget *gadget, dev->eps_num = i; spin_unlock_irqrestore(&dev->lock, flags); + dev_dbg(&gadget->dev, "gadget connected\n"); ret = raw_queue_event(dev, USB_RAW_EVENT_CONNECT, 0, NULL); if (ret < 0) { - dev_err(&gadget->dev, "failed to queue event\n"); + dev_err(&gadget->dev, "failed to queue connect event\n"); set_gadget_data(gadget, NULL); return ret; } @@ -357,20 +360,65 @@ static int gadget_setup(struct usb_gadget *gadget, ret = raw_queue_event(dev, USB_RAW_EVENT_CONTROL, sizeof(*ctrl), ctrl); if (ret < 0) - dev_err(&gadget->dev, "failed to queue event\n"); + dev_err(&gadget->dev, "failed to queue control event\n"); goto out; out_unlock: spin_unlock_irqrestore(&dev->lock, flags); out: + if (ret == 0 && ctrl->wLength == 0) { + /* + * Return USB_GADGET_DELAYED_STATUS as a workaround to stop + * some UDC drivers (e.g. dwc3) from automatically proceeding + * with the status stage for 0-length transfers. + * Should be removed once all UDC drivers are fixed to always + * delay the status stage until a response is queued to EP0. + */ + return USB_GADGET_DELAYED_STATUS; + } return ret; } -/* These are currently unused but present in case UDC driver requires them. */ -static void gadget_disconnect(struct usb_gadget *gadget) { } -static void gadget_suspend(struct usb_gadget *gadget) { } -static void gadget_resume(struct usb_gadget *gadget) { } -static void gadget_reset(struct usb_gadget *gadget) { } +static void gadget_disconnect(struct usb_gadget *gadget) +{ + struct raw_dev *dev = get_gadget_data(gadget); + int ret; + + dev_dbg(&gadget->dev, "gadget disconnected\n"); + ret = raw_queue_event(dev, USB_RAW_EVENT_DISCONNECT, 0, NULL); + if (ret < 0) + dev_err(&gadget->dev, "failed to queue disconnect event\n"); +} +static void gadget_suspend(struct usb_gadget *gadget) +{ + struct raw_dev *dev = get_gadget_data(gadget); + int ret; + + dev_dbg(&gadget->dev, "gadget suspended\n"); + ret = raw_queue_event(dev, USB_RAW_EVENT_SUSPEND, 0, NULL); + if (ret < 0) + dev_err(&gadget->dev, "failed to queue suspend event\n"); +} +static void gadget_resume(struct usb_gadget *gadget) +{ + struct raw_dev *dev = get_gadget_data(gadget); + int ret; + + dev_dbg(&gadget->dev, "gadget resumed\n"); + ret = raw_queue_event(dev, USB_RAW_EVENT_RESUME, 0, NULL); + if (ret < 0) + dev_err(&gadget->dev, "failed to queue resume event\n"); +} +static void gadget_reset(struct usb_gadget *gadget) +{ + struct raw_dev *dev = get_gadget_data(gadget); + int ret; + + dev_dbg(&gadget->dev, "gadget reset\n"); + ret = raw_queue_event(dev, USB_RAW_EVENT_RESET, 0, NULL); + if (ret < 0) + dev_err(&gadget->dev, "failed to queue reset event\n"); +} /*----------------------------------------------------------------------*/ @@ -620,7 +668,7 @@ static void *raw_alloc_io_data(struct usb_raw_ep_io *io, void __user *ptr, return ERR_PTR(-EINVAL); if (!usb_raw_io_flags_valid(io->flags)) return ERR_PTR(-EINVAL); - if (io->length > PAGE_SIZE) + if (io->length > USB_RAW_IO_LENGTH_MAX) return ERR_PTR(-EINVAL); if (get_from_user) data = memdup_user(ptr + sizeof(*io), io->length); @@ -663,12 +711,12 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io, if (WARN_ON(in && dev->ep0_out_pending)) { ret = -ENODEV; dev->state = STATE_DEV_FAILED; - goto out_done; + goto out_unlock; } if (WARN_ON(!in && dev->ep0_in_pending)) { ret = -ENODEV; dev->state = STATE_DEV_FAILED; - goto out_done; + goto out_unlock; } dev->req->buf = data; @@ -682,8 +730,7 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io, dev_err(&dev->gadget->dev, "fail, usb_ep_queue returned %d\n", ret); spin_lock_irqsave(&dev->lock, flags); - dev->state = STATE_DEV_FAILED; - goto out_done; + goto out_queue_failed; } ret = wait_for_completion_interruptible(&dev->ep0_done); @@ -692,13 +739,16 @@ static int raw_process_ep0_io(struct raw_dev *dev, struct usb_raw_ep_io *io, usb_ep_dequeue(dev->gadget->ep0, dev->req); wait_for_completion(&dev->ep0_done); spin_lock_irqsave(&dev->lock, flags); - goto out_done; + if (dev->ep0_status == -ECONNRESET) + dev->ep0_status = -EINTR; + goto out_interrupted; } spin_lock_irqsave(&dev->lock, flags); - ret = dev->ep0_status; -out_done: +out_interrupted: + ret = dev->ep0_status; +out_queue_failed: dev->ep0_urb_queued = false; out_unlock: spin_unlock_irqrestore(&dev->lock, flags); @@ -733,7 +783,7 @@ static int raw_ioctl_ep0_read(struct raw_dev *dev, unsigned long value) if (ret < 0) goto free; - length = min(io.length, (unsigned int)ret); + length = min_t(unsigned int, io.length, ret); if (copy_to_user((void __user *)(value + sizeof(io)), data, length)) ret = -EFAULT; else @@ -1066,8 +1116,7 @@ static int raw_process_ep_io(struct raw_dev *dev, struct usb_raw_ep_io *io, dev_err(&dev->gadget->dev, "fail, usb_ep_queue returned %d\n", ret); spin_lock_irqsave(&dev->lock, flags); - dev->state = STATE_DEV_FAILED; - goto out_done; + goto out_queue_failed; } ret = wait_for_completion_interruptible(&done); @@ -1076,13 +1125,16 @@ static int raw_process_ep_io(struct raw_dev *dev, struct usb_raw_ep_io *io, usb_ep_dequeue(ep->ep, ep->req); wait_for_completion(&done); spin_lock_irqsave(&dev->lock, flags); - goto out_done; + if (ep->status == -ECONNRESET) + ep->status = -EINTR; + goto out_interrupted; } spin_lock_irqsave(&dev->lock, flags); - ret = ep->status; -out_done: +out_interrupted: + ret = ep->status; +out_queue_failed: ep->urb_queued = false; out_unlock: spin_unlock_irqrestore(&dev->lock, flags); @@ -1117,7 +1169,7 @@ static int raw_ioctl_ep_read(struct raw_dev *dev, unsigned long value) if (ret < 0) goto free; - length = min(io.length, (unsigned int)ret); + length = min_t(unsigned int, io.length, ret); if (copy_to_user((void __user *)(value + sizeof(io)), data, length)) ret = -EFAULT; else @@ -1313,7 +1365,6 @@ static const struct file_operations raw_fops = { .unlocked_ioctl = raw_ioctl, .compat_ioctl = raw_ioctl, .release = raw_release, - .llseek = no_llseek, }; static struct miscdevice raw_misc_device = { diff --git a/drivers/usb/gadget/legacy/tcm_usb_gadget.c b/drivers/usb/gadget/legacy/tcm_usb_gadget.c index 40870227999a..fc1e06246d9d 100644 --- a/drivers/usb/gadget/legacy/tcm_usb_gadget.c +++ b/drivers/usb/gadget/legacy/tcm_usb_gadget.c @@ -19,7 +19,7 @@ #include <scsi/scsi_tcq.h> #include <target/target_core_base.h> #include <target/target_core_fabric.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "u_tcm.h" diff --git a/drivers/usb/gadget/legacy/webcam.c b/drivers/usb/gadget/legacy/webcam.c index c06dd1af7a0c..c395438d3978 100644 --- a/drivers/usb/gadget/legacy/webcam.c +++ b/drivers/usb/gadget/legacy/webcam.c @@ -12,6 +12,7 @@ #include <linux/usb/video.h> #include "u_uvc.h" +#include "uvc_configfs.h" USB_GADGET_COMPOSITE_OPTIONS(); @@ -84,8 +85,6 @@ static struct usb_device_descriptor webcam_device_descriptor = { .bNumConfigurations = 0, /* dynamic */ }; -DECLARE_UVC_HEADER_DESCRIPTOR(1); - static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = { .bLength = UVC_DT_HEADER_SIZE(1), .bDescriptorType = USB_DT_CS_INTERFACE, @@ -158,43 +157,112 @@ static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = { .bmaControls[1][0] = 4, }; -static const struct uvc_format_uncompressed uvc_format_yuv = { - .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, - .bFormatIndex = 1, - .bNumFrameDescriptors = 2, - .guidFormat = - { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, - 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}, - .bBitsPerPixel = 16, - .bDefaultFrameIndex = 1, - .bAspectRatioX = 0, - .bAspectRatioY = 0, - .bmInterlaceFlags = 0, - .bCopyProtect = 0, +static const struct uvcg_color_matching uvcg_color_matching = { + .desc = { + .bLength = UVC_DT_COLOR_MATCHING_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_COLORFORMAT, + .bColorPrimaries = 1, + .bTransferCharacteristics = 1, + .bMatrixCoefficients = 4, + }, +}; + +static struct uvcg_uncompressed uvcg_format_yuv = { + .fmt = { + .type = UVCG_UNCOMPRESSED, + /* add to .frames and fill .num_frames at runtime */ + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, + }, + .desc = { + .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, + .bFormatIndex = 1, + .bNumFrameDescriptors = 2, + .guidFormat = { + 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, + 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 + }, + .bBitsPerPixel = 16, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterlaceFlags = 0, + .bCopyProtect = 0, + }, +}; + +static struct uvcg_format_ptr uvcg_format_ptr_yuv = { + .fmt = &uvcg_format_yuv.fmt, }; DECLARE_UVC_FRAME_UNCOMPRESSED(1); DECLARE_UVC_FRAME_UNCOMPRESSED(3); +#define UVCG_WIDTH_360P 640 +#define UVCG_HEIGHT_360P 360 +#define UVCG_MIN_BITRATE_360P 18432000 +#define UVCG_MAX_BITRATE_360P 55296000 +#define UVCG_MAX_VIDEO_FB_SZ_360P 460800 +#define UVCG_FRM_INTERV_0_360P 666666 +#define UVCG_FRM_INTERV_1_360P 1000000 +#define UVCG_FRM_INTERV_2_360P 5000000 +#define UVCG_DEFAULT_FRM_INTERV_360P UVCG_FRM_INTERV_0_360P + static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), .bDescriptorType = USB_DT_CS_INTERFACE, .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, .bFrameIndex = 1, .bmCapabilities = 0, - .wWidth = cpu_to_le16(640), - .wHeight = cpu_to_le16(360), - .dwMinBitRate = cpu_to_le32(18432000), - .dwMaxBitRate = cpu_to_le32(55296000), - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), - .dwDefaultFrameInterval = cpu_to_le32(666666), + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), .bFrameIntervalType = 3, - .dwFrameInterval[0] = cpu_to_le32(666666), - .dwFrameInterval[1] = cpu_to_le32(1000000), - .dwFrameInterval[2] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), +}; + +static u32 uvcg_frame_yuv_360p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_360P, + [1] = UVCG_FRM_INTERV_1_360P, + [2] = UVCG_FRM_INTERV_2_360P, +}; + +static const struct uvcg_frame uvcg_frame_yuv_360p = { + .fmt_type = UVCG_UNCOMPRESSED, + .frame = { + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, + .b_frame_index = 1, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_360P, + .w_height = UVCG_HEIGHT_360P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, + .b_frame_interval_type = 3, + }, + .dw_frame_interval = uvcg_frame_yuv_360p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_360p = { + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_360p, }; +#define UVCG_WIDTH_720P 1280 +#define UVCG_HEIGHT_720P 720 +#define UVCG_MIN_BITRATE_720P 29491200 +#define UVCG_MAX_BITRATE_720P 29491200 +#define UVCG_MAX_VIDEO_FB_SZ_720P 1843200 +#define UVCG_FRM_INTERV_0_720P 5000000 +#define UVCG_DEFAULT_FRM_INTERV_720P UVCG_FRM_INTERV_0_720P static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), @@ -202,28 +270,66 @@ static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, .bFrameIndex = 2, .bmCapabilities = 0, - .wWidth = cpu_to_le16(1280), - .wHeight = cpu_to_le16(720), - .dwMinBitRate = cpu_to_le32(29491200), - .dwMaxBitRate = cpu_to_le32(29491200), - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), - .dwDefaultFrameInterval = cpu_to_le32(5000000), + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), .bFrameIntervalType = 1, - .dwFrameInterval[0] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), }; -static const struct uvc_format_mjpeg uvc_format_mjpg = { - .bLength = UVC_DT_FORMAT_MJPEG_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, - .bFormatIndex = 2, - .bNumFrameDescriptors = 2, - .bmFlags = 0, - .bDefaultFrameIndex = 1, - .bAspectRatioX = 0, - .bAspectRatioY = 0, - .bmInterlaceFlags = 0, - .bCopyProtect = 0, +static u32 uvcg_frame_yuv_720p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_720P, +}; + +static const struct uvcg_frame uvcg_frame_yuv_720p = { + .fmt_type = UVCG_UNCOMPRESSED, + .frame = { + .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, + .b_frame_index = 2, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_720P, + .w_height = UVCG_HEIGHT_720P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, + .b_frame_interval_type = 1, + }, + .dw_frame_interval = uvcg_frame_yuv_720p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_720p = { + .frm = (struct uvcg_frame *)&uvcg_frame_yuv_720p, +}; + +static struct uvcg_mjpeg uvcg_format_mjpeg = { + .fmt = { + .type = UVCG_MJPEG, + /* add to .frames and fill .num_frames at runtime */ + .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, + }, + .desc = { + .bLength = UVC_DT_FORMAT_MJPEG_SIZE, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, + .bFormatIndex = 2, + .bNumFrameDescriptors = 2, + .bmFlags = 0, + .bDefaultFrameIndex = 1, + .bAspectRatioX = 0, + .bAspectRatioY = 0, + .bmInterlaceFlags = 0, + .bCopyProtect = 0, + }, +}; + +static struct uvcg_format_ptr uvcg_format_ptr_mjpeg = { + .fmt = &uvcg_format_mjpeg.fmt, }; DECLARE_UVC_FRAME_MJPEG(1); @@ -235,16 +341,45 @@ static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { .bDescriptorSubType = UVC_VS_FRAME_MJPEG, .bFrameIndex = 1, .bmCapabilities = 0, - .wWidth = cpu_to_le16(640), - .wHeight = cpu_to_le16(360), - .dwMinBitRate = cpu_to_le32(18432000), - .dwMaxBitRate = cpu_to_le32(55296000), - .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), - .dwDefaultFrameInterval = cpu_to_le32(666666), + .wWidth = cpu_to_le16(UVCG_WIDTH_360P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), .bFrameIntervalType = 3, - .dwFrameInterval[0] = cpu_to_le32(666666), - .dwFrameInterval[1] = cpu_to_le32(1000000), - .dwFrameInterval[2] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), + .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), + .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), +}; + +static u32 uvcg_frame_mjpeg_360p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_360P, + [1] = UVCG_FRM_INTERV_1_360P, + [2] = UVCG_FRM_INTERV_2_360P, +}; + +static const struct uvcg_frame uvcg_frame_mjpeg_360p = { + .fmt_type = UVCG_MJPEG, + .frame = { + .b_length = UVC_DT_FRAME_MJPEG_SIZE(3), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, + .b_frame_index = 1, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_360P, + .w_height = UVCG_HEIGHT_360P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, + .b_frame_interval_type = 3, + }, + .dw_frame_interval = uvcg_frame_mjpeg_360p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_360p = { + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_360p, }; static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { @@ -253,23 +388,44 @@ static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { .bDescriptorSubType = UVC_VS_FRAME_MJPEG, .bFrameIndex = 2, .bmCapabilities = 0, - .wWidth = cpu_to_le16(1280), - .wHeight = cpu_to_le16(720), - .dwMinBitRate = cpu_to_le32(29491200), - .dwMaxBitRate = cpu_to_le32(29491200), - .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), - .dwDefaultFrameInterval = cpu_to_le32(5000000), + .wWidth = cpu_to_le16(UVCG_WIDTH_720P), + .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), + .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), + .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), + .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), + .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), .bFrameIntervalType = 1, - .dwFrameInterval[0] = cpu_to_le32(5000000), + .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), }; -static const struct uvc_color_matching_descriptor uvc_color_matching = { - .bLength = UVC_DT_COLOR_MATCHING_SIZE, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = UVC_VS_COLORFORMAT, - .bColorPrimaries = 1, - .bTransferCharacteristics = 1, - .bMatrixCoefficients = 4, +static u32 uvcg_frame_mjpeg_720p_dw_frame_interval[] = { + [0] = UVCG_FRM_INTERV_0_720P, +}; + +static const struct uvcg_frame uvcg_frame_mjpeg_720p = { + .fmt_type = UVCG_MJPEG, + .frame = { + .b_length = UVC_DT_FRAME_MJPEG_SIZE(1), + .b_descriptor_type = USB_DT_CS_INTERFACE, + .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, + .b_frame_index = 2, + .bm_capabilities = 0, + .w_width = UVCG_WIDTH_720P, + .w_height = UVCG_HEIGHT_720P, + .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, + .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, + .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, + .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, + .b_frame_interval_type = 1, + }, + .dw_frame_interval = uvcg_frame_mjpeg_720p_dw_frame_interval, +}; + +static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_720p = { + .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_720p, +}; + +static struct uvcg_streaming_header uvcg_streaming_header = { }; static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { @@ -290,40 +446,40 @@ static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { (const struct uvc_descriptor_header *) &uvc_input_header, - (const struct uvc_descriptor_header *) &uvc_format_yuv, + (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, - (const struct uvc_descriptor_header *) &uvc_format_mjpg, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, + (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, - (const struct uvc_descriptor_header *) &uvc_color_matching, + (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, NULL, }; @@ -387,6 +543,23 @@ webcam_bind(struct usb_composite_dev *cdev) uvc_opts->hs_streaming = uvc_hs_streaming_cls; uvc_opts->ss_streaming = uvc_ss_streaming_cls; + INIT_LIST_HEAD(&uvcg_format_yuv.fmt.frames); + list_add_tail(&uvcg_frame_ptr_yuv_360p.entry, &uvcg_format_yuv.fmt.frames); + list_add_tail(&uvcg_frame_ptr_yuv_720p.entry, &uvcg_format_yuv.fmt.frames); + uvcg_format_yuv.fmt.num_frames = 2; + + INIT_LIST_HEAD(&uvcg_format_mjpeg.fmt.frames); + list_add_tail(&uvcg_frame_ptr_mjpeg_360p.entry, &uvcg_format_mjpeg.fmt.frames); + list_add_tail(&uvcg_frame_ptr_mjpeg_720p.entry, &uvcg_format_mjpeg.fmt.frames); + uvcg_format_mjpeg.fmt.num_frames = 2; + + INIT_LIST_HEAD(&uvcg_streaming_header.formats); + list_add_tail(&uvcg_format_ptr_yuv.entry, &uvcg_streaming_header.formats); + list_add_tail(&uvcg_format_ptr_mjpeg.entry, &uvcg_streaming_header.formats); + uvcg_streaming_header.num_fmt = 2; + + uvc_opts->header = &uvcg_streaming_header; + /* Allocate string descriptor numbers ... note that string contents * can be overridden by the composite_dev glue. */ diff --git a/drivers/usb/gadget/legacy/zero.c b/drivers/usb/gadget/legacy/zero.c index 23312a07efb4..08a21bd0c2ba 100644 --- a/drivers/usb/gadget/legacy/zero.c +++ b/drivers/usb/gadget/legacy/zero.c @@ -147,6 +147,12 @@ static struct usb_gadget_strings *dev_strings[] = { NULL, }; +static struct usb_function *func_lb; +static struct usb_function_instance *func_inst_lb; + +static struct usb_function *func_ss; +static struct usb_function_instance *func_inst_ss; + /*-------------------------------------------------------------------------*/ static struct timer_list autoresume_timer; @@ -156,6 +162,7 @@ static void zero_autoresume(struct timer_list *unused) { struct usb_composite_dev *cdev = autoresume_cdev; struct usb_gadget *g = cdev->gadget; + int status; /* unconfigured devices can't issue wakeups */ if (!cdev->config) @@ -165,10 +172,18 @@ static void zero_autoresume(struct timer_list *unused) * more significant than just a timer firing; likely * because of some direct user request. */ - if (g->speed != USB_SPEED_UNKNOWN) { - int status = usb_gadget_wakeup(g); - INFO(cdev, "%s --> %d\n", __func__, status); + if (g->speed == USB_SPEED_UNKNOWN) + return; + + if (g->speed >= USB_SPEED_SUPER) { + if (loopdefault) + status = usb_func_wakeup(func_lb); + else + status = usb_func_wakeup(func_ss); + } else { + status = usb_gadget_wakeup(g); } + INFO(cdev, "%s --> %d\n", __func__, status); } static void zero_suspend(struct usb_composite_dev *cdev) @@ -194,7 +209,7 @@ static void zero_suspend(struct usb_composite_dev *cdev) static void zero_resume(struct usb_composite_dev *cdev) { DBG(cdev, "%s\n", __func__); - del_timer(&autoresume_timer); + timer_delete(&autoresume_timer); } /*-------------------------------------------------------------------------*/ @@ -206,9 +221,6 @@ static struct usb_configuration loopback_driver = { /* .iConfiguration = DYNAMIC */ }; -static struct usb_function *func_ss; -static struct usb_function_instance *func_inst_ss; - static int ss_config_setup(struct usb_configuration *c, const struct usb_ctrlrequest *ctrl) { @@ -248,9 +260,6 @@ module_param_named(isoc_maxburst, gzero_options.isoc_maxburst, uint, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(isoc_maxburst, "0 - 15 (ss only)"); -static struct usb_function *func_lb; -static struct usb_function_instance *func_inst_lb; - module_param_named(qlen, gzero_options.qlen, uint, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(qlen, "depth of loopback queue"); @@ -398,7 +407,7 @@ err_put_func_inst_ss: static int zero_unbind(struct usb_composite_dev *cdev) { - del_timer_sync(&autoresume_timer); + timer_delete_sync(&autoresume_timer); if (!IS_ERR_OR_NULL(func_ss)) usb_put_function(func_ss); usb_put_function_instance(func_inst_ss); @@ -425,4 +434,5 @@ static struct usb_composite_driver zero_driver = { module_usb_composite_driver(zero_driver); MODULE_AUTHOR("David Brownell"); +MODULE_DESCRIPTION("Gadget Zero, for USB development"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/u_f.c b/drivers/usb/gadget/u_f.c index 6aea1ecb3999..115d219c9c00 100644 --- a/drivers/usb/gadget/u_f.c +++ b/drivers/usb/gadget/u_f.c @@ -8,8 +8,8 @@ * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> */ -#include "u_f.h" #include <linux/usb/ch9.h> +#include <linux/usb/func_utils.h> struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len) { diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h deleted file mode 100644 index e313c3b8dcb1..000000000000 --- a/drivers/usb/gadget/u_f.h +++ /dev/null @@ -1,86 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * u_f.h - * - * Utility definitions for USB functions - * - * Copyright (c) 2013 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> - */ - -#ifndef __U_F_H__ -#define __U_F_H__ - -#include <linux/usb/gadget.h> -#include <linux/overflow.h> - -/* Variable Length Array Macros **********************************************/ -#define vla_group(groupname) size_t groupname##__next = 0 -#define vla_group_size(groupname) groupname##__next - -#define vla_item(groupname, type, name, n) \ - size_t groupname##_##name##__offset = ({ \ - size_t offset = 0; \ - if (groupname##__next != SIZE_MAX) { \ - size_t align_mask = __alignof__(type) - 1; \ - size_t size = array_size(n, sizeof(type)); \ - offset = (groupname##__next + align_mask) & \ - ~align_mask; \ - if (check_add_overflow(offset, size, \ - &groupname##__next)) { \ - groupname##__next = SIZE_MAX; \ - offset = 0; \ - } \ - } \ - offset; \ - }) - -#define vla_item_with_sz(groupname, type, name, n) \ - size_t groupname##_##name##__sz = array_size(n, sizeof(type)); \ - size_t groupname##_##name##__offset = ({ \ - size_t offset = 0; \ - if (groupname##__next != SIZE_MAX) { \ - size_t align_mask = __alignof__(type) - 1; \ - offset = (groupname##__next + align_mask) & \ - ~align_mask; \ - if (check_add_overflow(offset, groupname##_##name##__sz,\ - &groupname##__next)) { \ - groupname##__next = SIZE_MAX; \ - offset = 0; \ - } \ - } \ - offset; \ - }) - -#define vla_ptr(ptr, groupname, name) \ - ((void *) ((char *)ptr + groupname##_##name##__offset)) - -struct usb_ep; -struct usb_request; - -/** - * alloc_ep_req - returns a usb_request allocated by the gadget driver and - * allocates the request's buffer. - * - * @ep: the endpoint to allocate a usb_request - * @len: usb_requests's buffer suggested size - * - * In case @ep direction is OUT, the @len will be aligned to ep's - * wMaxPacketSize. In order to avoid memory leaks or drops, *always* use - * usb_requests's length (req->length) to refer to the allocated buffer size. - * Requests allocated via alloc_ep_req() *must* be freed by free_ep_req(). - */ -struct usb_request *alloc_ep_req(struct usb_ep *ep, size_t len); - -/* Frees a usb_request previously allocated by alloc_ep_req() */ -static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req) -{ - WARN_ON(req->buf == NULL); - kfree(req->buf); - req->buf = NULL; - usb_ep_free_request(ep, req); -} - -#endif /* __U_F_H__ */ diff --git a/drivers/usb/gadget/u_os_desc.h b/drivers/usb/gadget/u_os_desc.h index 5d7d35c8cc31..f8b9f0faa9b1 100644 --- a/drivers/usb/gadget/u_os_desc.h +++ b/drivers/usb/gadget/u_os_desc.h @@ -13,7 +13,7 @@ #ifndef __U_OS_DESC_H__ #define __U_OS_DESC_H__ -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/nls.h> #define USB_EXT_PROP_DW_SIZE 0 diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index aae1787320d4..26460340fbc9 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -102,12 +102,6 @@ config USB_FSL_USB2 dynamically linked module called "fsl_usb2_udc" and force all gadget drivers to also be dynamically linked. -config USB_FUSB300 - tristate "Faraday FUSB300 USB Peripheral Controller" - depends on !PHYS_ADDR_T_64BIT && HAS_DMA - help - Faraday usb device controller FUSB300 driver - config USB_GR_UDC tristate "Aeroflex Gaisler GRUSBDC USB Peripheral Controller Driver" depends on HAS_DMA @@ -228,21 +222,6 @@ config USB_PXA27X dynamically linked module called "pxa27x_udc" and force all gadget drivers to also be dynamically linked. -config USB_MV_UDC - tristate "Marvell USB2.0 Device Controller" - depends on HAS_DMA - help - Marvell Socs (including PXA and MMP series) include a high speed - USB2.0 OTG controller, which can be configured as high speed or - full speed USB peripheral. - -config USB_MV_U3D - depends on HAS_DMA - tristate "MARVELL PXA2128 USB 3.0 controller" - help - MARVELL PXA2128 Processor series include a super speed USB3.0 device - controller, which support super speed USB peripheral. - config USB_SNP_CORE depends on (USB_AMD5536UDC || USB_SNP_UDC_PLAT) depends on HAS_DMA @@ -326,29 +305,6 @@ config USB_FSL_QE Set CONFIG_USB_GADGET to "m" to build this driver as a dynamically linked module called "fsl_qe_udc". -config USB_NET2272 - depends on HAS_IOMEM - tristate "PLX NET2272" - help - PLX NET2272 is a USB peripheral controller which supports - both full and high speed USB 2.0 data transfers. - - It has three configurable endpoints, as well as endpoint zero - (for control transfer). - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "net2272" and force all - gadget drivers to also be dynamically linked. - -config USB_NET2272_DMA - bool "Support external DMA controller" - depends on USB_NET2272 && HAS_DMA - help - The NET2272 part can optionally support an external DMA - controller, but your board has to have support in the - driver itself. - - If unsure, say "N" here. The driver works fine in PIO mode. - config USB_NET2280 tristate "NetChip NET228x / PLX USB3x8x" depends on USB_PCI diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile index b52f93e9c61d..1b9b1a4f9c57 100644 --- a/drivers/usb/gadget/udc/Makefile +++ b/drivers/usb/gadget/udc/Makefile @@ -9,7 +9,6 @@ udc-core-y := core.o trace.o # obj-$(CONFIG_USB_GADGET) += udc-core.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o -obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o obj-$(CONFIG_USB_SNP_CORE) += snps_udc_core.o obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc_pci.o @@ -31,10 +30,6 @@ obj-$(CONFIG_USB_RENESAS_USBF) += renesas_usbf.o obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o obj-$(CONFIG_USB_LPC32XX) += lpc32xx_udc.o obj-$(CONFIG_USB_EG20T) += pch_udc.o -obj-$(CONFIG_USB_MV_UDC) += mv_udc.o -mv_udc-y := mv_udc_core.o -obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o -obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o obj-$(CONFIG_USB_GR_UDC) += gr_udc.o obj-$(CONFIG_USB_GADGET_XILINX) += udc-xilinx.o obj-$(CONFIG_USB_SNP_UDC_PLAT) += snps_udc_plat.o diff --git a/drivers/usb/gadget/udc/aspeed-vhub/core.c b/drivers/usb/gadget/udc/aspeed-vhub/core.c index 16f2db8c4a2b..f2685f89b3e5 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/core.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/core.c @@ -328,8 +328,7 @@ static int ast_vhub_probe(struct platform_device *pdev) vhub->port_irq_mask = GENMASK(VHUB_IRQ_DEV1_BIT + vhub->max_ports - 1, VHUB_IRQ_DEV1_BIT); - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - vhub->regs = devm_ioremap_resource(&pdev->dev, res); + vhub->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(vhub->regs)) { dev_err(&pdev->dev, "Failed to map resources\n"); return PTR_ERR(vhub->regs); @@ -429,7 +428,7 @@ MODULE_DEVICE_TABLE(of, ast_vhub_dt_ids); static struct platform_driver ast_vhub_driver = { .probe = ast_vhub_probe, - .remove_new = ast_vhub_remove, + .remove = ast_vhub_remove, .driver = { .name = KBUILD_MODNAME, .of_match_table = ast_vhub_dt_ids, diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c b/drivers/usb/gadget/udc/aspeed-vhub/dev.c index 573109ca5b79..a09f72772e6e 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c @@ -548,6 +548,9 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, unsigned int idx) d->vhub = vhub; d->index = idx; d->name = devm_kasprintf(parent, GFP_KERNEL, "port%d", idx+1); + if (!d->name) + return -ENOMEM; + d->regs = vhub->regs + 0x100 + 0x10 * idx; ast_vhub_init_ep0(vhub, &d->ep0, d); diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c index a63e4af60a56..02fe1a08d575 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c @@ -22,6 +22,7 @@ #include <linux/usb/gadget.h> #include <linux/of.h> #include <linux/regmap.h> +#include <linux/string_choices.h> #include <linux/dma-mapping.h> #include <linux/bcd.h> #include <linux/version.h> @@ -219,7 +220,7 @@ static int ast_vhub_hub_dev_feature(struct ast_vhub_ep *ep, if (wValue == USB_DEVICE_REMOTE_WAKEUP) { ep->vhub->wakeup_en = is_set; EPDBG(ep, "Hub remote wakeup %s\n", - is_set ? "enabled" : "disabled"); + str_enabled_disabled(is_set)); return std_req_complete; } diff --git a/drivers/usb/gadget/udc/aspeed_udc.c b/drivers/usb/gadget/udc/aspeed_udc.c index 01968e2167f9..353bfb1ff0a1 100644 --- a/drivers/usb/gadget/udc/aspeed_udc.c +++ b/drivers/usb/gadget/udc/aspeed_udc.c @@ -66,8 +66,8 @@ #define USB_UPSTREAM_EN BIT(0) /* Main config reg */ -#define UDC_CFG_SET_ADDR(x) ((x) & 0x3f) -#define UDC_CFG_ADDR_MASK (0x3f) +#define UDC_CFG_SET_ADDR(x) ((x) & UDC_CFG_ADDR_MASK) +#define UDC_CFG_ADDR_MASK GENMASK(6, 0) /* Interrupt ctrl & status reg */ #define UDC_IRQ_EP_POOL_NAK BIT(17) @@ -156,7 +156,7 @@ #define AST_EP_DMA_DESC_PID_DATA1 (2 << 14) #define AST_EP_DMA_DESC_PID_MDATA (3 << 14) #define EP_DESC1_IN_LEN(x) ((x) & 0x1fff) -#define AST_EP_DMA_DESC_MAX_LEN (7680) /* Max packet length for trasmit in 1 desc */ +#define AST_EP_DMA_DESC_MAX_LEN (7680) /* Max packet length for transmit in 1 desc */ struct ast_udc_request { struct usb_request req; @@ -1009,6 +1009,8 @@ static void ast_udc_getstatus(struct ast_udc_dev *udc) break; case USB_RECIP_ENDPOINT: epnum = crq.wIndex & USB_ENDPOINT_NUMBER_MASK; + if (epnum >= AST_UDC_NUM_ENDPOINTS) + goto stall; status = udc->ep[epnum].stopped; break; default: @@ -1432,15 +1434,24 @@ static void ast_udc_init_hw(struct ast_udc_dev *udc) ast_udc_write(udc, 0, AST_UDC_EP0_CTRL); } -static int ast_udc_remove(struct platform_device *pdev) +static void ast_udc_remove(struct platform_device *pdev) { struct ast_udc_dev *udc = platform_get_drvdata(pdev); unsigned long flags; u32 ctrl; usb_del_gadget_udc(&udc->gadget); - if (udc->driver) - return -EBUSY; + if (udc->driver) { + /* + * This is broken as only some cleanup is skipped, *udev is + * freed and the register mapping goes away. Any further usage + * probably crashes. Also the device is unbound, so the skipped + * cleanup is never catched up later. + */ + dev_alert(&pdev->dev, + "Driver is busy and still going away. Fasten your seat belts!\n"); + return; + } spin_lock_irqsave(&udc->lock, flags); @@ -1459,8 +1470,6 @@ static int ast_udc_remove(struct platform_device *pdev) udc->ep0_buf_dma); udc->ep0_buf = NULL; - - return 0; } static int ast_udc_probe(struct platform_device *pdev) @@ -1468,7 +1477,6 @@ static int ast_udc_probe(struct platform_device *pdev) enum usb_device_speed max_speed; struct device *dev = &pdev->dev; struct ast_udc_dev *udc; - struct resource *res; int rc; udc = devm_kzalloc(&pdev->dev, sizeof(struct ast_udc_dev), GFP_KERNEL); @@ -1484,8 +1492,7 @@ static int ast_udc_probe(struct platform_device *pdev) udc->gadget.name = "aspeed-udc"; udc->gadget.dev.init_name = "gadget"; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - udc->reg = devm_ioremap_resource(&pdev->dev, res); + udc->reg = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(udc->reg)) { dev_err(&pdev->dev, "Failed to map resources\n"); return PTR_ERR(udc->reg); diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c index 922b4187004b..42b94d858e37 100644 --- a/drivers/usb/gadget/udc/at91_udc.c +++ b/drivers/usb/gadget/udc/at91_udc.c @@ -16,6 +16,7 @@ #include <linux/delay.h> #include <linux/ioport.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/errno.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -131,7 +132,7 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep) seq_printf(s, "csr %08x rxbytes=%d %s %s %s" EIGHTBITS "\n", csr, (csr & 0x07ff0000) >> 16, - (csr & (1 << 15)) ? "enabled" : "disabled", + str_enabled_disabled(csr & (1 << 15)), (csr & (1 << 11)) ? "DATA1" : "DATA0", types[(csr & 0x700) >> 8], @@ -1540,7 +1541,7 @@ static void at91_vbus_timer_work(struct work_struct *work) static void at91_vbus_timer(struct timer_list *t) { - struct at91_udc *udc = from_timer(udc, t, vbus_timer); + struct at91_udc *udc = timer_container_of(udc, t, vbus_timer); /* * If we are polling vbus it is likely that the gpio is on an @@ -1924,7 +1925,7 @@ err_unprepare_fclk: return retval; } -static int at91udc_remove(struct platform_device *pdev) +static void at91udc_remove(struct platform_device *pdev) { struct at91_udc *udc = platform_get_drvdata(pdev); unsigned long flags; @@ -1932,8 +1933,11 @@ static int at91udc_remove(struct platform_device *pdev) DBG("remove\n"); usb_del_gadget_udc(&udc->gadget); - if (udc->driver) - return -EBUSY; + if (udc->driver) { + dev_err(&pdev->dev, + "Driver still in use but removing anyhow\n"); + return; + } spin_lock_irqsave(&udc->lock, flags); pullup(udc, 0); @@ -1943,8 +1947,6 @@ static int at91udc_remove(struct platform_device *pdev) remove_debug_file(udc); clk_unprepare(udc->fclk); clk_unprepare(udc->iclk); - - return 0; } #ifdef CONFIG_PM @@ -2000,6 +2002,7 @@ static int at91udc_resume(struct platform_device *pdev) #endif static struct platform_driver at91_udc_driver = { + .probe = at91udc_probe, .remove = at91udc_remove, .shutdown = at91udc_shutdown, .suspend = at91udc_suspend, @@ -2010,7 +2013,7 @@ static struct platform_driver at91_udc_driver = { }, }; -module_platform_driver_probe(at91_udc_driver, at91udc_probe); +module_platform_driver(at91_udc_driver); MODULE_DESCRIPTION("AT91 udc driver"); MODULE_AUTHOR("Thomas Rathbone, David Brownell"); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 6c0ed3fa5eb1..0c6f2ad81d37 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -94,7 +94,7 @@ static ssize_t queue_dbg_read(struct file *file, char __user *buf, inode_lock(file_inode(file)); list_for_each_entry_safe(req, tmp_req, queue, queue) { - len = snprintf(tmpbuf, sizeof(tmpbuf), + len = scnprintf(tmpbuf, sizeof(tmpbuf), "%8p %08x %c%c%c %5d %c%c%c\n", req->req.buf, req->req.length, req->req.no_interrupt ? 'i' : 'I', @@ -104,7 +104,6 @@ static ssize_t queue_dbg_read(struct file *file, char __user *buf, req->submitted ? 'F' : 'f', req->using_dma ? 'D' : 'd', req->last_transaction ? 'L' : 'l'); - len = min(len, sizeof(tmpbuf)); if (len > nbytes) break; @@ -188,7 +187,6 @@ static int regs_dbg_release(struct inode *inode, struct file *file) static const struct file_operations queue_dbg_fops = { .owner = THIS_MODULE, .open = queue_dbg_open, - .llseek = no_llseek, .read = queue_dbg_read, .release = queue_dbg_release, }; @@ -2285,15 +2283,13 @@ static int usba_udc_probe(struct platform_device *pdev) udc->gadget = usba_gadget_template; INIT_LIST_HEAD(&udc->gadget.ep_list); - res = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID); - udc->regs = devm_ioremap_resource(&pdev->dev, res); + udc->regs = devm_platform_get_and_ioremap_resource(pdev, CTRL_IOMEM_ID, &res); if (IS_ERR(udc->regs)) return PTR_ERR(udc->regs); dev_info(&pdev->dev, "MMIO registers at %pR mapped at %p\n", res, udc->regs); - res = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID); - udc->fifo = devm_ioremap_resource(&pdev->dev, res); + udc->fifo = devm_platform_get_and_ioremap_resource(pdev, FIFO_IOMEM_ID, &res); if (IS_ERR(udc->fifo)) return PTR_ERR(udc->fifo); dev_info(&pdev->dev, "FIFO at %pR mapped at %p\n", res, udc->fifo); @@ -2448,7 +2444,7 @@ static SIMPLE_DEV_PM_OPS(usba_udc_pm_ops, usba_udc_suspend, usba_udc_resume); static struct platform_driver udc_driver = { .probe = usba_udc_probe, - .remove_new = usba_udc_remove, + .remove = usba_udc_remove, .driver = { .name = "atmel_usba_udc", .pm = &usba_udc_pm_ops, diff --git a/drivers/usb/gadget/udc/bcm63xx_udc.c b/drivers/usb/gadget/udc/bcm63xx_udc.c index da7011d906e0..502612a5650e 100644 --- a/drivers/usb/gadget/udc/bcm63xx_udc.c +++ b/drivers/usb/gadget/udc/bcm63xx_udc.c @@ -2367,7 +2367,7 @@ static void bcm63xx_udc_remove(struct platform_device *pdev) static struct platform_driver bcm63xx_udc_driver = { .probe = bcm63xx_udc_probe, - .remove_new = bcm63xx_udc_remove, + .remove = bcm63xx_udc_remove, .driver = { .name = DRV_MODULE_NAME, }, diff --git a/drivers/usb/gadget/udc/bdc/bdc.h b/drivers/usb/gadget/udc/bdc/bdc.h index 8d00b1239f21..2f4abf6f8f77 100644 --- a/drivers/usb/gadget/udc/bdc/bdc.h +++ b/drivers/usb/gadget/udc/bdc/bdc.h @@ -20,7 +20,7 @@ #include <linux/debugfs.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #define BRCM_BDC_NAME "bdc" #define BRCM_BDC_DESC "Broadcom USB Device Controller driver" diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c index 35a652807fca..5c3d8b64c0e7 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_core.c +++ b/drivers/usb/gadget/udc/bdc/bdc_core.c @@ -639,6 +639,7 @@ static const struct of_device_id bdc_of_match[] = { { .compatible = "brcm,bdc" }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, bdc_of_match); static struct platform_driver bdc_driver = { .driver = { @@ -647,7 +648,7 @@ static struct platform_driver bdc_driver = { .of_match_table = bdc_of_match, }, .probe = bdc_probe, - .remove_new = bdc_remove, + .remove = bdc_remove, }; module_platform_driver(bdc_driver); diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c index fa88f210ecd5..f995cfa9b99e 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_ep.c +++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c @@ -30,7 +30,7 @@ #include <linux/pm.h> #include <linux/io.h> #include <linux/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/platform_device.h> #include <linux/usb/composite.h> diff --git a/drivers/usb/gadget/udc/bdc/bdc_udc.c b/drivers/usb/gadget/udc/bdc/bdc_udc.c index 53ffaf4e2e37..23826fd7a8e6 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_udc.c +++ b/drivers/usb/gadget/udc/bdc/bdc_udc.c @@ -29,7 +29,7 @@ #include <linux/pm.h> #include <linux/io.h> #include <linux/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/platform_device.h> #include "bdc.h" diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-debug.h b/drivers/usb/gadget/udc/cdns2/cdns2-debug.h index be9ae0d28a40..f5f330004190 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-debug.h +++ b/drivers/usb/gadget/udc/cdns2/cdns2-debug.h @@ -16,34 +16,34 @@ static inline const char *cdns2_decode_usb_irq(char *str, size_t size, { int ret; - ret = snprintf(str, size, "usbirq: 0x%02x - ", usb_irq); + ret = scnprintf(str, size, "usbirq: 0x%02x - ", usb_irq); if (usb_irq & USBIRQ_SOF) - ret += snprintf(str + ret, size - ret, "SOF "); + ret += scnprintf(str + ret, size - ret, "SOF "); if (usb_irq & USBIRQ_SUTOK) - ret += snprintf(str + ret, size - ret, "SUTOK "); + ret += scnprintf(str + ret, size - ret, "SUTOK "); if (usb_irq & USBIRQ_SUDAV) - ret += snprintf(str + ret, size - ret, "SETUP "); + ret += scnprintf(str + ret, size - ret, "SETUP "); if (usb_irq & USBIRQ_SUSPEND) - ret += snprintf(str + ret, size - ret, "Suspend "); + ret += scnprintf(str + ret, size - ret, "Suspend "); if (usb_irq & USBIRQ_URESET) - ret += snprintf(str + ret, size - ret, "Reset "); + ret += scnprintf(str + ret, size - ret, "Reset "); if (usb_irq & USBIRQ_HSPEED) - ret += snprintf(str + ret, size - ret, "HS "); + ret += scnprintf(str + ret, size - ret, "HS "); if (usb_irq & USBIRQ_LPM) - ret += snprintf(str + ret, size - ret, "LPM "); + ret += scnprintf(str + ret, size - ret, "LPM "); - ret += snprintf(str + ret, size - ret, ", EXT: 0x%02x - ", ext_irq); + ret += scnprintf(str + ret, size - ret, ", EXT: 0x%02x - ", ext_irq); if (ext_irq & EXTIRQ_WAKEUP) - ret += snprintf(str + ret, size - ret, "Wakeup "); + ret += scnprintf(str + ret, size - ret, "Wakeup "); if (ext_irq & EXTIRQ_VBUSFAULT_FALL) - ret += snprintf(str + ret, size - ret, "VBUS_FALL "); + ret += scnprintf(str + ret, size - ret, "VBUS_FALL "); if (ext_irq & EXTIRQ_VBUSFAULT_RISE) - ret += snprintf(str + ret, size - ret, "VBUS_RISE "); + ret += scnprintf(str + ret, size - ret, "VBUS_RISE "); - if (ret >= size) - pr_info("CDNS2: buffer overflowed.\n"); + if (ret == size - 1) + pr_info("CDNS2: buffer may be truncated.\n"); return str; } @@ -54,28 +54,28 @@ static inline const char *cdns2_decode_dma_irq(char *str, size_t size, { int ret; - ret = snprintf(str, size, "ISTS: %08x, %s: %08x ", - ep_ists, ep_name, ep_sts); + ret = scnprintf(str, size, "ISTS: %08x, %s: %08x ", + ep_ists, ep_name, ep_sts); if (ep_sts & DMA_EP_STS_IOC) - ret += snprintf(str + ret, size - ret, "IOC "); + ret += scnprintf(str + ret, size - ret, "IOC "); if (ep_sts & DMA_EP_STS_ISP) - ret += snprintf(str + ret, size - ret, "ISP "); + ret += scnprintf(str + ret, size - ret, "ISP "); if (ep_sts & DMA_EP_STS_DESCMIS) - ret += snprintf(str + ret, size - ret, "DESCMIS "); + ret += scnprintf(str + ret, size - ret, "DESCMIS "); if (ep_sts & DMA_EP_STS_TRBERR) - ret += snprintf(str + ret, size - ret, "TRBERR "); + ret += scnprintf(str + ret, size - ret, "TRBERR "); if (ep_sts & DMA_EP_STS_OUTSMM) - ret += snprintf(str + ret, size - ret, "OUTSMM "); + ret += scnprintf(str + ret, size - ret, "OUTSMM "); if (ep_sts & DMA_EP_STS_ISOERR) - ret += snprintf(str + ret, size - ret, "ISOERR "); + ret += scnprintf(str + ret, size - ret, "ISOERR "); if (ep_sts & DMA_EP_STS_DBUSY) - ret += snprintf(str + ret, size - ret, "DBUSY "); + ret += scnprintf(str + ret, size - ret, "DBUSY "); if (DMA_EP_STS_CCS(ep_sts)) - ret += snprintf(str + ret, size - ret, "CCS "); + ret += scnprintf(str + ret, size - ret, "CCS "); - if (ret >= size) - pr_info("CDNS2: buffer overflowed.\n"); + if (ret == size - 1) + pr_info("CDNS2: buffer may be truncated.\n"); return str; } @@ -105,43 +105,43 @@ static inline const char *cdns2_raw_ring(struct cdns2_endpoint *pep, int ret; int i; - ret = snprintf(str, size, "\n\t\tTR for %s:", pep->name); + ret = scnprintf(str, size, "\n\t\tTR for %s:", pep->name); trb = &trbs[ring->dequeue]; dma = cdns2_trb_virt_to_dma(pep, trb); - ret += snprintf(str + ret, size - ret, - "\n\t\tRing deq index: %d, trb: V=%p, P=0x%pad\n", - ring->dequeue, trb, &dma); + ret += scnprintf(str + ret, size - ret, + "\n\t\tRing deq index: %d, trb: V=%p, P=0x%pad\n", + ring->dequeue, trb, &dma); trb = &trbs[ring->enqueue]; dma = cdns2_trb_virt_to_dma(pep, trb); - ret += snprintf(str + ret, size - ret, - "\t\tRing enq index: %d, trb: V=%p, P=0x%pad\n", - ring->enqueue, trb, &dma); + ret += scnprintf(str + ret, size - ret, + "\t\tRing enq index: %d, trb: V=%p, P=0x%pad\n", + ring->enqueue, trb, &dma); - ret += snprintf(str + ret, size - ret, - "\t\tfree trbs: %d, CCS=%d, PCS=%d\n", - ring->free_trbs, ring->ccs, ring->pcs); + ret += scnprintf(str + ret, size - ret, + "\t\tfree trbs: %d, CCS=%d, PCS=%d\n", + ring->free_trbs, ring->ccs, ring->pcs); if (TRBS_PER_SEGMENT > 40) { - ret += snprintf(str + ret, size - ret, - "\t\tTransfer ring %d too big\n", TRBS_PER_SEGMENT); + ret += scnprintf(str + ret, size - ret, + "\t\tTransfer ring %d too big\n", TRBS_PER_SEGMENT); return str; } dma = ring->dma; for (i = 0; i < TRBS_PER_SEGMENT; ++i) { trb = &trbs[i]; - ret += snprintf(str + ret, size - ret, - "\t\t@%pad %08x %08x %08x\n", &dma, - le32_to_cpu(trb->buffer), - le32_to_cpu(trb->length), - le32_to_cpu(trb->control)); + ret += scnprintf(str + ret, size - ret, + "\t\t@%pad %08x %08x %08x\n", &dma, + le32_to_cpu(trb->buffer), + le32_to_cpu(trb->length), + le32_to_cpu(trb->control)); dma += sizeof(*trb); } - if (ret >= size) - pr_info("CDNS2: buffer overflowed.\n"); + if (ret == size - 1) + pr_info("CDNS2: buffer may be truncated.\n"); return str; } @@ -166,36 +166,36 @@ static inline const char *cdns2_decode_trb(char *str, size_t size, u32 flags, switch (type) { case TRB_LINK: - ret = snprintf(str, size, - "LINK %08x type '%s' flags %c:%c:%c%c:%c", - buffer, cdns2_trb_type_string(type), - flags & TRB_CYCLE ? 'C' : 'c', - flags & TRB_TOGGLE ? 'T' : 't', - flags & TRB_CHAIN ? 'C' : 'c', - flags & TRB_CHAIN ? 'H' : 'h', - flags & TRB_IOC ? 'I' : 'i'); + ret = scnprintf(str, size, + "LINK %08x type '%s' flags %c:%c:%c%c:%c", + buffer, cdns2_trb_type_string(type), + flags & TRB_CYCLE ? 'C' : 'c', + flags & TRB_TOGGLE ? 'T' : 't', + flags & TRB_CHAIN ? 'C' : 'c', + flags & TRB_CHAIN ? 'H' : 'h', + flags & TRB_IOC ? 'I' : 'i'); break; case TRB_NORMAL: - ret = snprintf(str, size, - "type: '%s', Buffer: %08x, length: %ld, burst len: %ld, " - "flags %c:%c:%c%c:%c", - cdns2_trb_type_string(type), - buffer, TRB_LEN(length), - TRB_FIELD_TO_BURST(length), - flags & TRB_CYCLE ? 'C' : 'c', - flags & TRB_ISP ? 'I' : 'i', - flags & TRB_CHAIN ? 'C' : 'c', - flags & TRB_CHAIN ? 'H' : 'h', - flags & TRB_IOC ? 'I' : 'i'); + ret = scnprintf(str, size, + "type: '%s', Buffer: %08x, length: %ld, burst len: %ld, " + "flags %c:%c:%c%c:%c", + cdns2_trb_type_string(type), + buffer, TRB_LEN(length), + TRB_FIELD_TO_BURST(length), + flags & TRB_CYCLE ? 'C' : 'c', + flags & TRB_ISP ? 'I' : 'i', + flags & TRB_CHAIN ? 'C' : 'c', + flags & TRB_CHAIN ? 'H' : 'h', + flags & TRB_IOC ? 'I' : 'i'); break; default: - ret = snprintf(str, size, "type '%s' -> raw %08x %08x %08x", - cdns2_trb_type_string(type), - buffer, length, flags); + ret = scnprintf(str, size, "type '%s' -> raw %08x %08x %08x", + cdns2_trb_type_string(type), + buffer, length, flags); } - if (ret >= size) - pr_info("CDNS2: buffer overflowed.\n"); + if (ret == size - 1) + pr_info("CDNS2: buffer may be truncated.\n"); return str; } diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-ep0.c b/drivers/usb/gadget/udc/cdns2/cdns2-ep0.c index fa12a5d46f2e..a5a9d395fd0d 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-ep0.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-ep0.c @@ -8,7 +8,7 @@ */ #include <linux/usb/composite.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "cdns2-gadget.h" #include "cdns2-trace.h" diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c index 0eed0e03842c..9b53daf76583 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.c @@ -29,6 +29,7 @@ #include <linux/pm_runtime.h> #include <linux/interrupt.h> #include <linux/property.h> +#include <linux/string_choices.h> #include <linux/dmapool.h> #include <linux/iopoll.h> @@ -2033,8 +2034,8 @@ static void cdns2_quiesce(struct cdns2_device *pdev) set_reg_bit_8(&pdev->usb_regs->usbcs, USBCS_DISCON); /* Disable interrupt. */ - writeb(0, &pdev->interrupt_regs->extien), - writeb(0, &pdev->interrupt_regs->usbien), + writeb(0, &pdev->interrupt_regs->extien); + writeb(0, &pdev->interrupt_regs->usbien); writew(0, &pdev->adma_regs->ep_ien); /* Clear interrupt line. */ @@ -2233,12 +2234,12 @@ static int cdns2_init_eps(struct cdns2_device *pdev) dev_dbg(pdev->dev, "Init %s, SupType: CTRL: %s, INT: %s, " "BULK: %s, ISOC %s, SupDir IN: %s, OUT: %s\n", pep->name, - (pep->endpoint.caps.type_control) ? "yes" : "no", - (pep->endpoint.caps.type_int) ? "yes" : "no", - (pep->endpoint.caps.type_bulk) ? "yes" : "no", - (pep->endpoint.caps.type_iso) ? "yes" : "no", - (pep->endpoint.caps.dir_in) ? "yes" : "no", - (pep->endpoint.caps.dir_out) ? "yes" : "no"); + str_yes_no(pep->endpoint.caps.type_control), + str_yes_no(pep->endpoint.caps.type_int), + str_yes_no(pep->endpoint.caps.type_bulk), + str_yes_no(pep->endpoint.caps.type_iso), + str_yes_no(pep->endpoint.caps.dir_in), + str_yes_no(pep->endpoint.caps.dir_out)); INIT_LIST_HEAD(&pep->pending_list); INIT_LIST_HEAD(&pep->deferred_list); @@ -2251,7 +2252,6 @@ static int cdns2_gadget_start(struct cdns2_device *pdev) { u32 max_speed; void *buf; - int val; int ret; pdev->usb_regs = pdev->regs; @@ -2261,14 +2261,9 @@ static int cdns2_gadget_start(struct cdns2_device *pdev) pdev->adma_regs = pdev->regs + CDNS2_ADMA_REGS_OFFSET; /* Reset controller. */ - set_reg_bit_8(&pdev->usb_regs->cpuctrl, CPUCTRL_SW_RST); - - ret = readl_poll_timeout_atomic(&pdev->usb_regs->cpuctrl, val, - !(val & CPUCTRL_SW_RST), 1, 10000); - if (ret) { - dev_err(pdev->dev, "Error: reset controller timeout\n"); - return -EINVAL; - } + writeb(CPUCTRL_SW_RST | CPUCTRL_UPCLK | CPUCTRL_WUEN, + &pdev->usb_regs->cpuctrl); + usleep_range(5, 10); usb_initialize_gadget(pdev->dev, &pdev->gadget, NULL); @@ -2420,7 +2415,6 @@ int cdns2_gadget_resume(struct cdns2_device *pdev, bool hibernated) void cdns2_gadget_remove(struct cdns2_device *pdev) { - pm_runtime_mark_last_busy(pdev->dev); pm_runtime_put_autosuspend(pdev->dev); usb_del_gadget(&pdev->gadget); diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h index 71e2f62d653a..b5d5ec12e986 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h +++ b/drivers/usb/gadget/udc/cdns2/cdns2-gadget.h @@ -292,8 +292,17 @@ struct cdns2_usb_regs { #define SPEEDCTRL_HSDISABLE BIT(7) /* CPUCTRL- bitmasks. */ +/* UP clock enable */ +#define CPUCTRL_UPCLK BIT(0) /* Controller reset bit. */ #define CPUCTRL_SW_RST BIT(1) +/** + * If the wuen bit is ‘1’, the upclken is automatically set to ‘1’ after + * detecting rising edge of wuintereq interrupt. If the wuen bit is ‘0’, + * the wuintereq interrupt is ignored. + */ +#define CPUCTRL_WUEN BIT(7) + /** * struct cdns2_adma_regs - ADMA controller registers. diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-pci.c b/drivers/usb/gadget/udc/cdns2/cdns2-pci.c index 1691541c9413..e589593b4cbf 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-pci.c +++ b/drivers/usb/gadget/udc/cdns2/cdns2-pci.c @@ -15,8 +15,6 @@ #include "cdns2-gadget.h" #define PCI_DRIVER_NAME "cdns-pci-usbhs" -#define CDNS_VENDOR_ID 0x17cd -#define CDNS_DEVICE_ID 0x0120 #define PCI_BAR_DEV 0 #define PCI_DEV_FN_DEVICE 0 @@ -114,14 +112,14 @@ static const struct dev_pm_ops cdns2_pci_pm_ops = { }; static const struct pci_device_id cdns2_pci_ids[] = { - { PCI_VENDOR_ID_CDNS, CDNS_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, - PCI_CLASS_SERIAL_USB_DEVICE, PCI_ANY_ID }, + { PCI_DEVICE(PCI_VENDOR_ID_CDNS, PCI_DEVICE_ID_CDNS_USB), + .class = PCI_CLASS_SERIAL_USB_DEVICE }, { 0, } }; static struct pci_driver cdns2_pci_driver = { .name = "cdns2-pci", - .id_table = &cdns2_pci_ids[0], + .id_table = cdns2_pci_ids, .probe = cdns2_pci_probe, .remove = cdns2_pci_remove, .driver = { diff --git a/drivers/usb/gadget/udc/cdns2/cdns2-trace.h b/drivers/usb/gadget/udc/cdns2/cdns2-trace.h index 61f241634ea5..f4df0e2ff853 100644 --- a/drivers/usb/gadget/udc/cdns2/cdns2-trace.h +++ b/drivers/usb/gadget/udc/cdns2/cdns2-trace.h @@ -47,16 +47,6 @@ DEFINE_EVENT(cdns2_log_enable_disable, cdns2_pullup, TP_ARGS(set) ); -DEFINE_EVENT(cdns2_log_enable_disable, cdns2_lpm, - TP_PROTO(int set), - TP_ARGS(set) -); - -DEFINE_EVENT(cdns2_log_enable_disable, cdns2_may_wakeup, - TP_PROTO(int set), - TP_ARGS(set) -); - DECLARE_EVENT_CLASS(cdns2_log_simple, TP_PROTO(char *msg), TP_ARGS(msg), @@ -64,7 +54,7 @@ DECLARE_EVENT_CLASS(cdns2_log_simple, __string(text, msg) ), TP_fast_assign( - __assign_str(text, msg); + __assign_str(text); ), TP_printk("%s", __get_str(text)) ); @@ -79,11 +69,6 @@ DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_status_stage, TP_ARGS(msg) ); -DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_set_config, - TP_PROTO(char *msg), - TP_ARGS(msg) -); - DEFINE_EVENT(cdns2_log_simple, cdns2_ep0_setup, TP_PROTO(char *msg), TP_ARGS(msg) @@ -103,7 +88,7 @@ TRACE_EVENT(cdns2_ep_halt, __field(u8, flush) ), TP_fast_assign( - __assign_str(name, ep_priv->name); + __assign_str(name); __entry->halt = halt; __entry->flush = flush; ), @@ -119,8 +104,8 @@ TRACE_EVENT(cdns2_wa1, __string(msg, msg) ), TP_fast_assign( - __assign_str(ep_name, ep_priv->name); - __assign_str(msg, msg); + __assign_str(ep_name); + __assign_str(msg); ), TP_printk("WA1: %s %s", __get_str(ep_name), __get_str(msg)) ); @@ -134,7 +119,7 @@ DECLARE_EVENT_CLASS(cdns2_log_doorbell, __field(u32, ep_trbaddr) ), TP_fast_assign( - __assign_str(name, pep->name); + __assign_str(name); __entry->ep_trbaddr = ep_trbaddr; ), TP_printk("%s, ep_trbaddr %08x", __get_str(name), @@ -196,7 +181,7 @@ DECLARE_EVENT_CLASS(cdns2_log_epx_irq, __field(u32, ep_traddr) ), TP_fast_assign( - __assign_str(ep_name, pep->name); + __assign_str(ep_name); __entry->ep_sts = readl(&pdev->adma_regs->ep_sts); __entry->ep_ists = readl(&pdev->adma_regs->ep_ists); __entry->ep_traddr = readl(&pdev->adma_regs->ep_traddr); @@ -288,7 +273,7 @@ DECLARE_EVENT_CLASS(cdns2_log_request, __field(int, end_trb) ), TP_fast_assign( - __assign_str(name, preq->pep->name); + __assign_str(name); __entry->request = &preq->request; __entry->preq = preq; __entry->buf = preq->request.buf; @@ -340,11 +325,6 @@ DEFINE_EVENT(cdns2_log_request, cdns2_free_request, TP_ARGS(preq) ); -DEFINE_EVENT(cdns2_log_request, cdns2_ep_queue, - TP_PROTO(struct cdns2_request *preq), - TP_ARGS(preq) -); - DEFINE_EVENT(cdns2_log_request, cdns2_request_dequeue, TP_PROTO(struct cdns2_request *preq), TP_ARGS(preq) @@ -355,50 +335,6 @@ DEFINE_EVENT(cdns2_log_request, cdns2_request_giveback, TP_ARGS(preq) ); -TRACE_EVENT(cdns2_ep0_enqueue, - TP_PROTO(struct cdns2_device *dev_priv, struct usb_request *request), - TP_ARGS(dev_priv, request), - TP_STRUCT__entry( - __field(int, dir) - __field(int, length) - ), - TP_fast_assign( - __entry->dir = dev_priv->eps[0].dir; - __entry->length = request->length; - ), - TP_printk("Queue to ep0%s length: %u", __entry->dir ? "in" : "out", - __entry->length) -); - -DECLARE_EVENT_CLASS(cdns2_log_map_request, - TP_PROTO(struct cdns2_request *priv_req), - TP_ARGS(priv_req), - TP_STRUCT__entry( - __string(name, priv_req->pep->name) - __field(struct usb_request *, req) - __field(void *, buf) - __field(dma_addr_t, dma) - ), - TP_fast_assign( - __assign_str(name, priv_req->pep->name); - __entry->req = &priv_req->request; - __entry->buf = priv_req->request.buf; - __entry->dma = priv_req->request.dma; - ), - TP_printk("%s: req: %p, req buf %p, dma %p", - __get_str(name), __entry->req, __entry->buf, &__entry->dma - ) -); - -DEFINE_EVENT(cdns2_log_map_request, cdns2_map_request, - TP_PROTO(struct cdns2_request *req), - TP_ARGS(req) -); -DEFINE_EVENT(cdns2_log_map_request, cdns2_mapped_request, - TP_PROTO(struct cdns2_request *req), - TP_ARGS(req) -); - DECLARE_EVENT_CLASS(cdns2_log_trb, TP_PROTO(struct cdns2_endpoint *pep, struct cdns2_trb *trb), TP_ARGS(pep, trb), @@ -411,7 +347,7 @@ DECLARE_EVENT_CLASS(cdns2_log_trb, __field(u32, type) ), TP_fast_assign( - __assign_str(name, pep->name); + __assign_str(name); __entry->trb = trb; __entry->buffer = le32_to_cpu(trb->buffer); __entry->length = le32_to_cpu(trb->length); @@ -476,7 +412,7 @@ DECLARE_EVENT_CLASS(cdns2_log_ep, __field(u8, dequeue) ), TP_fast_assign( - __assign_str(name, pep->name); + __assign_str(name); __entry->maxpacket = pep->endpoint.maxpacket; __entry->maxpacket_limit = pep->endpoint.maxpacket_limit; __entry->flags = pep->ep_state; @@ -507,11 +443,6 @@ DEFINE_EVENT(cdns2_log_ep, cdns2_gadget_ep_disable, TP_ARGS(pep) ); -DEFINE_EVENT(cdns2_log_ep, cdns2_iso_out_ep_disable, - TP_PROTO(struct cdns2_endpoint *pep), - TP_ARGS(pep) -); - DEFINE_EVENT(cdns2_log_ep, cdns2_ep_busy_try_halt_again, TP_PROTO(struct cdns2_endpoint *pep), TP_ARGS(pep) @@ -568,7 +499,7 @@ DECLARE_EVENT_CLASS(cdns2_log_epx_reg_config, __field(u32, ep_cfg_reg) ), TP_fast_assign( - __assign_str(ep_name, pep->name); + __assign_str(ep_name); __entry->burst_size = pep->trb_burst_size; __entry->maxpack_reg = pep->dir ? readw(&pdev->epx_regs->txmaxpack[pep->num - 1]) : readw(&pdev->epx_regs->rxmaxpack[pep->num - 1]); diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index 7d49d8a0b00c..8dbe79bdc0f9 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -40,6 +40,7 @@ static const struct bus_type gadget_bus_type; * @allow_connect: Indicates whether UDC is allowed to be pulled up. * Set/cleared by gadget_(un)bind_driver() after gadget driver is bound or * unbound. + * @vbus_work: work routine to handle VBUS status change notifications. * @connect_lock: protects udc->started, gadget->connect, * gadget->allow_connect and gadget->deactivate. The routines * usb_gadget_connect_locked(), usb_gadget_disconnect_locked(), @@ -117,12 +118,10 @@ int usb_ep_enable(struct usb_ep *ep) goto out; /* UDC drivers can't handle endpoints with maxpacket size 0 */ - if (usb_endpoint_maxp(ep->desc) == 0) { - /* - * We should log an error message here, but we can't call - * dev_err() because there's no way to find the gadget - * given only ep. - */ + if (!ep->desc || usb_endpoint_maxp(ep->desc) == 0) { + WARN_ONCE(1, "%s: ep%d (%s) has %s\n", __func__, ep->address, ep->name, + (!ep->desc) ? "NULL descriptor" : "maxpacket 0"); + ret = -EINVAL; goto out; } @@ -195,6 +194,9 @@ struct usb_request *usb_ep_alloc_request(struct usb_ep *ep, req = ep->ops->alloc_request(ep, gfp_flags); + if (req) + req->ep = ep; + trace_usb_ep_alloc_request(ep, req, req ? 0 : -ENOMEM); return req; @@ -291,7 +293,9 @@ int usb_ep_queue(struct usb_ep *ep, { int ret = 0; - if (WARN_ON_ONCE(!ep->enabled && ep->address)) { + if (!ep->enabled && ep->address) { + pr_debug("USB gadget: queue request to disabled ep 0x%x (%s)\n", + ep->address, ep->name); ret = -ESHUTDOWN; goto out; } @@ -902,6 +906,11 @@ int usb_gadget_map_request_by_dev(struct device *dev, if (req->length == 0) return 0; + if (req->sg_was_mapped) { + req->num_mapped_sgs = req->num_sgs; + return 0; + } + if (req->num_sgs) { int mapped; @@ -947,7 +956,7 @@ EXPORT_SYMBOL_GPL(usb_gadget_map_request); void usb_gadget_unmap_request_by_dev(struct device *dev, struct usb_request *req, int is_in) { - if (req->length == 0) + if (req->length == 0 || req->sg_was_mapped) return; if (req->num_mapped_sgs) { @@ -1117,20 +1126,26 @@ static void usb_gadget_state_work(struct work_struct *work) void usb_gadget_set_state(struct usb_gadget *gadget, enum usb_device_state state) { + unsigned long flags; + + spin_lock_irqsave(&gadget->state_lock, flags); gadget->state = state; - schedule_work(&gadget->work); + if (!gadget->teardown) + schedule_work(&gadget->work); + spin_unlock_irqrestore(&gadget->state_lock, flags); + trace_usb_gadget_set_state(gadget, 0); } EXPORT_SYMBOL_GPL(usb_gadget_set_state); /* ------------------------------------------------------------------------- */ /* Acquire connect_lock before calling this function. */ -static void usb_udc_connect_control_locked(struct usb_udc *udc) __must_hold(&udc->connect_lock) +static int usb_udc_connect_control_locked(struct usb_udc *udc) __must_hold(&udc->connect_lock) { if (udc->vbus) - usb_gadget_connect_locked(udc->gadget); + return usb_gadget_connect_locked(udc->gadget); else - usb_gadget_disconnect_locked(udc->gadget); + return usb_gadget_disconnect_locked(udc->gadget); } static void vbus_event_work(struct work_struct *work) @@ -1351,6 +1366,8 @@ static void usb_udc_nop_release(struct device *dev) void usb_initialize_gadget(struct device *parent, struct usb_gadget *gadget, void (*release)(struct device *dev)) { + spin_lock_init(&gadget->state_lock); + gadget->teardown = false; INIT_WORK(&gadget->work, usb_gadget_state_work); gadget->dev.parent = parent; @@ -1418,8 +1435,16 @@ int usb_add_gadget(struct usb_gadget *gadget) if (ret) goto err_free_id; + ret = sysfs_create_link(&udc->dev.kobj, + &gadget->dev.kobj, "gadget"); + if (ret) + goto err_del_gadget; + return 0; + err_del_gadget: + device_del(&gadget->dev); + err_free_id: ida_free(&gadget_id_numbers, gadget->id_number); @@ -1517,6 +1542,7 @@ EXPORT_SYMBOL_GPL(usb_add_gadget_udc); void usb_del_gadget(struct usb_gadget *gadget) { struct usb_udc *udc = gadget->udc; + unsigned long flags; if (!udc) return; @@ -1528,8 +1554,16 @@ void usb_del_gadget(struct usb_gadget *gadget) mutex_unlock(&udc_lock); kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); - flush_work(&gadget->work); + sysfs_remove_link(&udc->dev.kobj, "gadget"); device_del(&gadget->dev); + /* + * Set the teardown flag before flushing the work to prevent new work + * from being scheduled while we are cleaning up. + */ + spin_lock_irqsave(&gadget->state_lock, flags); + gadget->teardown = true; + spin_unlock_irqrestore(&gadget->state_lock, flags); + flush_work(&gadget->work); ida_free(&gadget_id_numbers, gadget->id_number); cancel_work_sync(&udc->vbus_work); device_unregister(&udc->dev); @@ -1551,11 +1585,11 @@ EXPORT_SYMBOL_GPL(usb_del_gadget_udc); /* ------------------------------------------------------------------------- */ -static int gadget_match_driver(struct device *dev, struct device_driver *drv) +static int gadget_match_driver(struct device *dev, const struct device_driver *drv) { struct usb_gadget *gadget = dev_to_usb_gadget(dev); struct usb_udc *udc = gadget->udc; - struct usb_gadget_driver *driver = container_of(drv, + const struct usb_gadget_driver *driver = container_of(drv, struct usb_gadget_driver, driver); /* If the driver specifies a udc_name, it must match the UDC's name */ @@ -1604,12 +1638,23 @@ static int gadget_bind_driver(struct device *dev) } usb_gadget_enable_async_callbacks(udc); udc->allow_connect = true; - usb_udc_connect_control_locked(udc); + ret = usb_udc_connect_control_locked(udc); + if (ret) + goto err_connect_control; + mutex_unlock(&udc->connect_lock); kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); return 0; + err_connect_control: + udc->allow_connect = false; + usb_gadget_disable_async_callbacks(udc); + if (gadget->irq) + synchronize_irq(gadget->irq); + usb_gadget_udc_stop_locked(udc); + mutex_unlock(&udc->connect_lock); + err_start: driver->unbind(udc->gadget); @@ -1634,8 +1679,6 @@ static void gadget_unbind_driver(struct device *dev) dev_dbg(&udc->dev, "unbinding gadget driver [%s]\n", driver->function); - kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); - udc->allow_connect = false; cancel_work_sync(&udc->vbus_work); mutex_lock(&udc->connect_lock); @@ -1655,6 +1698,8 @@ static void gadget_unbind_driver(struct device *dev) driver->is_bound = false; udc->driver = NULL; mutex_unlock(&udc_lock); + + kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE); } /* ------------------------------------------------------------------------- */ @@ -1670,6 +1715,7 @@ int usb_gadget_register_driver_owner(struct usb_gadget_driver *driver, driver->driver.bus = &gadget_bus_type; driver->driver.owner = owner; driver->driver.mod_name = mod_name; + driver->driver.probe_type = PROBE_FORCE_SYNCHRONOUS; ret = driver_register(&driver->driver); if (ret) { pr_warn("%s: driver registration failed: %d\n", diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 0953e1b5c030..1cefca660773 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -28,9 +28,10 @@ #include <linux/delay.h> #include <linux/ioport.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/errno.h> #include <linux/init.h> -#include <linux/timer.h> +#include <linux/hrtimer.h> #include <linux/list.h> #include <linux/interrupt.h> #include <linux/platform_device.h> @@ -42,7 +43,7 @@ #include <asm/byteorder.h> #include <linux/io.h> #include <asm/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #define DRIVER_DESC "USB Host+Gadget Emulator" #define DRIVER_VERSION "02 May 2005" @@ -50,6 +51,8 @@ #define POWER_BUDGET 500 /* in mA; use 8 for low-power port testing */ #define POWER_BUDGET_3 900 /* in mA */ +#define DUMMY_TIMER_INT_NSECS 125000 /* 1 microframe */ + static const char driver_name[] = "dummy_hcd"; static const char driver_desc[] = "USB Host+Gadget Emulator"; @@ -78,7 +81,7 @@ module_param_named(num, mod_data.num, uint, S_IRUGO); MODULE_PARM_DESC(num, "number of emulated controllers"); /*-------------------------------------------------------------------------*/ -/* gadget side driver data structres */ +/* gadget side driver data structures */ struct dummy_ep { struct list_head queue; unsigned long last_io; /* jiffies timestamp */ @@ -240,7 +243,7 @@ enum dummy_rh_state { struct dummy_hcd { struct dummy *dum; enum dummy_rh_state rh_state; - struct timer_list timer; + struct hrtimer timer; u32 port_status; u32 old_status; unsigned long re_timeout; @@ -252,6 +255,7 @@ struct dummy_hcd { u32 stream_en_ep; u8 num_stream[30 / 2]; + unsigned timer_pending:1; unsigned active:1; unsigned old_active:1; unsigned resuming:1; @@ -619,10 +623,10 @@ static int dummy_enable(struct usb_ep *_ep, dev_dbg(udc_dev(dum), "enabled %s (ep%d%s-%s) maxpacket %d stream %s\n", _ep->name, - desc->bEndpointAddress & 0x0f, + usb_endpoint_num(desc), (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", usb_ep_type_string(usb_endpoint_type(desc)), - max, ep->stream_en ? "enabled" : "disabled"); + max, str_enabled_disabled(ep->stream_en)); /* at this point real hardware should be NAKing transfers * to that endpoint, until a buffer is queued to it. @@ -761,8 +765,7 @@ static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) if (!dum->driver) return -ESHUTDOWN; - local_irq_save(flags); - spin_lock(&dum->lock); + spin_lock_irqsave(&dum->lock, flags); list_for_each_entry(iter, &ep->queue, queue) { if (&iter->req != _req) continue; @@ -772,15 +775,16 @@ static int dummy_dequeue(struct usb_ep *_ep, struct usb_request *_req) retval = 0; break; } - spin_unlock(&dum->lock); if (retval == 0) { dev_dbg(udc_dev(dum), "dequeued req %p from %s, len %d buf %p\n", req, _ep->name, _req->length, _req->buf); + spin_unlock(&dum->lock); usb_gadget_giveback_request(_ep, _req); + spin_lock(&dum->lock); } - local_irq_restore(flags); + spin_unlock_irqrestore(&dum->lock, flags); return retval; } @@ -1149,7 +1153,7 @@ static int dummy_udc_resume(struct platform_device *pdev) static struct platform_driver dummy_udc_driver = { .probe = dummy_udc_probe, - .remove_new = dummy_udc_remove, + .remove = dummy_udc_remove, .suspend = dummy_udc_suspend, .resume = dummy_udc_resume, .driver = { @@ -1301,8 +1305,11 @@ static int dummy_urb_enqueue( urb->error_count = 1; /* mark as a new urb */ /* kick the scheduler, it'll do the rest */ - if (!timer_pending(&dum_hcd->timer)) - mod_timer(&dum_hcd->timer, jiffies + 1); + if (!dum_hcd->timer_pending) { + dum_hcd->timer_pending = 1; + hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), + HRTIMER_MODE_REL_SOFT); + } done: spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); @@ -1321,9 +1328,10 @@ static int dummy_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) spin_lock_irqsave(&dum_hcd->dum->lock, flags); rc = usb_hcd_check_unlink_urb(hcd, urb, status); - if (!rc && dum_hcd->rh_state != DUMMY_RH_RUNNING && - !list_empty(&dum_hcd->urbp_list)) - mod_timer(&dum_hcd->timer, jiffies); + if (rc == 0 && !dum_hcd->timer_pending) { + dum_hcd->timer_pending = 1; + hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT); + } spin_unlock_irqrestore(&dum_hcd->dum->lock, flags); return rc; @@ -1777,9 +1785,10 @@ static int handle_control_request(struct dummy_hcd *dum_hcd, struct urb *urb, * drivers except that the callbacks are invoked from soft interrupt * context. */ -static void dummy_timer(struct timer_list *t) +static enum hrtimer_restart dummy_timer(struct hrtimer *t) { - struct dummy_hcd *dum_hcd = from_timer(dum_hcd, t, timer); + struct dummy_hcd *dum_hcd = timer_container_of(dum_hcd, t, + timer); struct dummy *dum = dum_hcd->dum; struct urbp *urbp, *tmp; unsigned long flags; @@ -1808,16 +1817,15 @@ static void dummy_timer(struct timer_list *t) break; } - /* FIXME if HZ != 1000 this will probably misbehave ... */ - /* look at each urb queued by the host side driver */ spin_lock_irqsave(&dum->lock, flags); + dum_hcd->timer_pending = 0; if (!dum_hcd->udev) { dev_err(dummy_dev(dum_hcd), "timer fired with no URBs pending?\n"); spin_unlock_irqrestore(&dum->lock, flags); - return; + return HRTIMER_NORESTART; } dum_hcd->next_frame_urbp = NULL; @@ -1993,12 +2001,17 @@ return_urb: if (list_empty(&dum_hcd->urbp_list)) { usb_put_dev(dum_hcd->udev); dum_hcd->udev = NULL; - } else if (dum_hcd->rh_state == DUMMY_RH_RUNNING) { + } else if (!dum_hcd->timer_pending && + dum_hcd->rh_state == DUMMY_RH_RUNNING) { /* want a 1 msec delay here */ - mod_timer(&dum_hcd->timer, jiffies + msecs_to_jiffies(1)); + dum_hcd->timer_pending = 1; + hrtimer_start(&dum_hcd->timer, ns_to_ktime(DUMMY_TIMER_INT_NSECS), + HRTIMER_MODE_REL_SOFT); } spin_unlock_irqrestore(&dum->lock, flags); + + return HRTIMER_NORESTART; } /*-------------------------------------------------------------------------*/ @@ -2386,8 +2399,10 @@ static int dummy_bus_resume(struct usb_hcd *hcd) } else { dum_hcd->rh_state = DUMMY_RH_RUNNING; set_link_state(dum_hcd); - if (!list_empty(&dum_hcd->urbp_list)) - mod_timer(&dum_hcd->timer, jiffies); + if (!list_empty(&dum_hcd->urbp_list)) { + dum_hcd->timer_pending = 1; + hrtimer_start(&dum_hcd->timer, ns_to_ktime(0), HRTIMER_MODE_REL_SOFT); + } hcd->state = HC_STATE_RUNNING; } spin_unlock_irq(&dum_hcd->dum->lock); @@ -2465,7 +2480,7 @@ static DEVICE_ATTR_RO(urbs); static int dummy_start_ss(struct dummy_hcd *dum_hcd) { - timer_setup(&dum_hcd->timer, dummy_timer, 0); + hrtimer_setup(&dum_hcd->timer, dummy_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); dum_hcd->rh_state = DUMMY_RH_RUNNING; dum_hcd->stream_en_ep = 0; INIT_LIST_HEAD(&dum_hcd->urbp_list); @@ -2494,7 +2509,7 @@ static int dummy_start(struct usb_hcd *hcd) return dummy_start_ss(dum_hcd); spin_lock_init(&dum_hcd->dum->lock); - timer_setup(&dum_hcd->timer, dummy_timer, 0); + hrtimer_setup(&dum_hcd->timer, dummy_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT); dum_hcd->rh_state = DUMMY_RH_RUNNING; INIT_LIST_HEAD(&dum_hcd->urbp_list); @@ -2513,8 +2528,12 @@ static int dummy_start(struct usb_hcd *hcd) static void dummy_stop(struct usb_hcd *hcd) { - device_remove_file(dummy_dev(hcd_to_dummy_hcd(hcd)), &dev_attr_urbs); - dev_info(dummy_dev(hcd_to_dummy_hcd(hcd)), "stopped\n"); + struct dummy_hcd *dum_hcd = hcd_to_dummy_hcd(hcd); + + hrtimer_cancel(&dum_hcd->timer); + dum_hcd->timer_pending = 0; + device_remove_file(dummy_dev(dum_hcd), &dev_attr_urbs); + dev_info(dummy_dev(dum_hcd), "stopped\n"); } /*-------------------------------------------------------------------------*/ @@ -2750,7 +2769,7 @@ static int dummy_hcd_resume(struct platform_device *pdev) static struct platform_driver dummy_hcd_driver = { .probe = dummy_hcd_probe, - .remove_new = dummy_hcd_remove, + .remove = dummy_hcd_remove, .suspend = dummy_hcd_suspend, .resume = dummy_hcd_resume, .driver = { diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c index 9c5dc1c1a68e..aacfde06387c 100644 --- a/drivers/usb/gadget/udc/fsl_qe_udc.c +++ b/drivers/usb/gadget/udc/fsl_qe_udc.c @@ -27,9 +27,10 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/moduleparam.h> +#include <linux/of.h> #include <linux/of_address.h> #include <linux/of_irq.h> -#include <linux/of_platform.h> +#include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -510,7 +511,7 @@ static int qe_ep_register_init(struct qe_udc *udc, unsigned char pipe_num) out_8(&epparam->tbmr, rtfcr); tmp = (u16)(ep->ep.maxpacket + USB_CRC_SIZE); - /* MRBLR must be divisble by 4 */ + /* MRBLR must be divisible by 4 */ tmp = (u16)(((tmp >> 2) << 2) + 4); out_be16(&epparam->mrblr, tmp); @@ -1412,7 +1413,7 @@ static int ep_txframe_handle(struct qe_ep *ep) return 0; } -/* confirm the already trainsmited bd */ +/* confirm the already transmitted bd */ static int qe_ep_txconf(struct qe_ep *ep) { struct qe_bd __iomem *bd; @@ -1959,6 +1960,8 @@ static void ch9getstatus(struct qe_udc *udc, u8 request_type, u16 value, } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { /* Get endpoint status */ int pipe = index & USB_ENDPOINT_NUMBER_MASK; + if (pipe >= USB_MAX_ENDPOINTS) + goto stall; struct qe_ep *target_ep = &udc->eps[pipe]; u16 usep; @@ -2193,7 +2196,7 @@ static int tx_irq(struct qe_udc *udc) } -/* setup packect's rx is handle in the function too */ +/* setup packet's rx is handle in the function too */ static void rx_irq(struct qe_udc *udc) { struct qe_ep *ep; @@ -2469,17 +2472,12 @@ static const struct of_device_id qe_udc_match[]; static int qe_udc_probe(struct platform_device *ofdev) { struct qe_udc *udc; - const struct of_device_id *match; struct device_node *np = ofdev->dev.of_node; struct qe_ep *ep; unsigned int ret = 0; unsigned int i; const void *prop; - match = of_match_device(qe_udc_match, &ofdev->dev); - if (!match) - return -EINVAL; - prop = of_get_property(np, "mode", NULL); if (!prop || strcmp(prop, "peripheral")) return -ENODEV; @@ -2491,7 +2489,7 @@ static int qe_udc_probe(struct platform_device *ofdev) return -ENOMEM; } - udc->soc_type = (unsigned long)match->data; + udc->soc_type = (unsigned long)device_get_match_data(&ofdev->dev); udc->usb_regs = of_iomap(np, 0); if (!udc->usb_regs) { ret = -ENOMEM; @@ -2706,7 +2704,7 @@ static struct platform_driver udc_driver = { .of_match_table = qe_udc_match, }, .probe = qe_udc_probe, - .remove_new = qe_udc_remove, + .remove = qe_udc_remove, #ifdef CONFIG_PM .suspend = qe_udc_suspend, .resume = qe_udc_resume, diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index a67873a074b7..4dea8bc30cf6 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -13,7 +13,7 @@ * code from Dave Liu and Shlomi Gridish. */ -#undef VERBOSE +#define pr_fmt(x) "udc: " x #include <linux/module.h> #include <linux/kernel.h> @@ -22,6 +22,7 @@ #include <linux/errno.h> #include <linux/err.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/init.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -36,11 +37,10 @@ #include <linux/platform_device.h> #include <linux/fsl_devices.h> #include <linux/dmapool.h> -#include <linux/of_device.h> #include <asm/byteorder.h> #include <asm/io.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <asm/dma.h> #include "fsl_usb2_udc.h" @@ -184,9 +184,9 @@ __acquires(ep->udc->lock) usb_gadget_unmap_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); if (status && (status != -ESHUTDOWN)) - VDBG("complete %s req %p stat %d len %u/%u", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); + dev_vdbg(&udc->gadget.dev, "complete %s req %p stat %d len %u/%u\n", + ep->ep.name, &req->req, status, + req->req.actual, req->req.length); ep->stopped = 1; @@ -286,7 +286,7 @@ static int dr_controller_setup(struct fsl_udc *udc) timeout = jiffies + FSL_UDC_RESET_TIMEOUT; while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) { if (time_after(jiffies, timeout)) { - ERR("udc reset timeout!\n"); + dev_err(&udc->gadget.dev, "udc reset timeout!\n"); return -ETIMEDOUT; } cpu_relax(); @@ -309,9 +309,10 @@ static int dr_controller_setup(struct fsl_udc *udc) tmp &= USB_EP_LIST_ADDRESS_MASK; fsl_writel(tmp, &dr_regs->endpointlistaddr); - VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x", - udc->ep_qh, (int)tmp, - fsl_readl(&dr_regs->endpointlistaddr)); + dev_vdbg(&udc->gadget.dev, + "vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x\n", + udc->ep_qh, (int)tmp, + fsl_readl(&dr_regs->endpointlistaddr)); max_no_of_ep = (0x0000001F & fsl_readl(&dr_regs->dccparams)); for (ep_num = 1; ep_num < max_no_of_ep; ep_num++) { @@ -499,7 +500,7 @@ static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num, tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS; break; default: - VDBG("error ep type is %d", ep_type); + dev_vdbg(&udc->gadget.dev, "error ep type is %d\n", ep_type); return; } if (zlt) @@ -612,10 +613,10 @@ static int fsl_ep_enable(struct usb_ep *_ep, spin_unlock_irqrestore(&udc->lock, flags); retval = 0; - VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name, - ep->ep.desc->bEndpointAddress & 0x0f, - (desc->bEndpointAddress & USB_DIR_IN) - ? "in" : "out", max); + dev_vdbg(&udc->gadget.dev, "enabled %s (ep%d%s) maxpacket %d\n", + ep->ep.name, ep->ep.desc->bEndpointAddress & 0x0f, + (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", + max); en_done: return retval; } @@ -634,7 +635,10 @@ static int fsl_ep_disable(struct usb_ep *_ep) ep = container_of(_ep, struct fsl_ep, ep); if (!_ep || !ep->ep.desc) { - VDBG("%s not enabled", _ep ? ep->ep.name : NULL); + /* + * dev_vdbg(&udc->gadget.dev, "%s not enabled\n", + * _ep ? ep->ep.name : NULL); + */ return -EINVAL; } @@ -660,7 +664,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) ep->stopped = 1; spin_unlock_irqrestore(&udc->lock, flags); - VDBG("disabled %s OK", _ep->name); + dev_vdbg(&udc->gadget.dev, "disabled %s OK\n", _ep->name); return 0; } @@ -672,7 +676,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) static struct usb_request * fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) { - struct fsl_req *req = NULL; + struct fsl_req *req; req = kzalloc(sizeof *req, gfp_flags); if (!req) @@ -720,8 +724,8 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) { u32 temp, bitmask, tmp_stat; - /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr); - VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */ + /* dev_vdbg(&udc->gadget.dev, "QH addr Register 0x%8x\n", dr_regs->endpointlistaddr); + dev_vdbg(&udc->gadget.dev, "ep_qh[%d] addr is 0x%8x\n", i, (u32)&(ep->udc->ep_qh[i])); */ bitmask = ep_is_in(ep) ? (1 << (ep_index(ep) + 16)) @@ -809,7 +813,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, *is_last = 0; if ((*is_last) == 0) - VDBG("multi-dtd request!"); + dev_vdbg(&udc_controller->gadget.dev, "multi-dtd request!\n"); /* Fill in the transfer size; set active bit */ swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE); @@ -821,7 +825,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, mb(); - VDBG("length = %d address= 0x%x", *length, (int)*dma); + dev_vdbg(&udc_controller->gadget.dev, "length = %d address= 0x%x\n", *length, (int)*dma); return dtd; } @@ -865,18 +869,18 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) { struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep); struct fsl_req *req = container_of(_req, struct fsl_req, req); - struct fsl_udc *udc; + struct fsl_udc *udc = ep->udc; unsigned long flags; int ret; /* catch various bogus parameters */ if (!_req || !req->req.complete || !req->req.buf || !list_empty(&req->queue)) { - VDBG("%s, bad params", __func__); + dev_vdbg(&udc->gadget.dev, "%s, bad params\n", __func__); return -EINVAL; } - if (unlikely(!_ep || !ep->ep.desc)) { - VDBG("%s, bad ep", __func__); + if (unlikely(!ep->ep.desc)) { + dev_vdbg(&udc->gadget.dev, "%s, bad ep\n", __func__); return -EINVAL; } if (usb_endpoint_xfer_isoc(ep->ep.desc)) { @@ -884,7 +888,6 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -EMSGSIZE; } - udc = ep->udc; if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) return -ESHUTDOWN; @@ -1037,8 +1040,8 @@ static int fsl_ep_set_halt(struct usb_ep *_ep, int value) udc->ep0_dir = 0; } out: - VDBG(" %s %s halt stat %d", ep->ep.name, - value ? "set" : "clear", status); + dev_vdbg(&udc->gadget.dev, "%s %s halt stat %d\n", ep->ep.name, + value ? "set" : "clear", status); return status; } @@ -1106,7 +1109,8 @@ static void fsl_ep_fifo_flush(struct usb_ep *_ep) /* Wait until flush complete */ while (fsl_readl(&dr_regs->endptflush)) { if (time_after(jiffies, timeout)) { - ERR("ep flush timeout\n"); + dev_err(&udc_controller->gadget.dev, + "ep flush timeout\n"); return; } cpu_relax(); @@ -1178,7 +1182,7 @@ static int fsl_vbus_session(struct usb_gadget *gadget, int is_active) udc = container_of(gadget, struct fsl_udc, gadget); spin_lock_irqsave(&udc->lock, flags); - VDBG("VBUS %s", is_active ? "on" : "off"); + dev_vdbg(&gadget->dev, "VBUS %s\n", str_on_off(is_active)); udc->vbus_active = (is_active != 0); if (can_pullup(udc)) fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), @@ -1361,7 +1365,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, udc->ep0_dir = USB_DIR_IN; /* Borrow the per device status_req */ req = udc->status_req; - /* Fill in the reqest structure */ + /* Fill in the request structure */ *((u16 *) req->req.buf) = cpu_to_le16(tmp); req->ep = ep; @@ -1544,7 +1548,7 @@ static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0, udc->ep0_state = WAIT_FOR_SETUP; break; case WAIT_FOR_SETUP: - ERR("Unexpected ep0 packets\n"); + dev_err(&udc->gadget.dev, "Unexpected ep0 packets\n"); break; default: ep0stall(udc); @@ -1613,7 +1617,7 @@ static int process_ep_req(struct fsl_udc *udc, int pipe, errors = hc32_to_cpu(curr_td->size_ioc_sts); if (errors & DTD_ERROR_MASK) { if (errors & DTD_STATUS_HALTED) { - ERR("dTD error %08x QH=%d\n", errors, pipe); + dev_err(&udc->gadget.dev, "dTD error %08x QH=%d\n", errors, pipe); /* Clear the errors and Halt condition */ tmp = hc32_to_cpu(curr_qh->size_ioc_int_sts); tmp &= ~errors; @@ -1624,32 +1628,35 @@ static int process_ep_req(struct fsl_udc *udc, int pipe, break; } if (errors & DTD_STATUS_DATA_BUFF_ERR) { - VDBG("Transfer overflow"); + dev_vdbg(&udc->gadget.dev, "Transfer overflow\n"); status = -EPROTO; break; } else if (errors & DTD_STATUS_TRANSACTION_ERR) { - VDBG("ISO error"); + dev_vdbg(&udc->gadget.dev, "ISO error\n"); status = -EILSEQ; break; } else - ERR("Unknown error has occurred (0x%x)!\n", + dev_err(&udc->gadget.dev, + "Unknown error has occurred (0x%x)!\n", errors); } else if (hc32_to_cpu(curr_td->size_ioc_sts) & DTD_STATUS_ACTIVE) { - VDBG("Request not complete"); + dev_vdbg(&udc->gadget.dev, "Request not complete\n"); status = REQ_UNCOMPLETE; return status; } else if (remaining_length) { if (direction) { - VDBG("Transmit dTD remaining length not zero"); + dev_vdbg(&udc->gadget.dev, + "Transmit dTD remaining length not zero\n"); status = -EPROTO; break; } else { break; } } else { - VDBG("dTD transmitted successful"); + dev_vdbg(&udc->gadget.dev, + "dTD transmitted successful\n"); } if (j != curr_req->dtd_count - 1) @@ -1692,7 +1699,7 @@ static void dtd_complete_irq(struct fsl_udc *udc) /* If the ep is configured */ if (!curr_ep->ep.name) { - WARNING("Invalid EP?"); + dev_warn(&udc->gadget.dev, "Invalid EP?\n"); continue; } @@ -1701,8 +1708,9 @@ static void dtd_complete_irq(struct fsl_udc *udc) queue) { status = process_ep_req(udc, i, curr_req); - VDBG("status of process_ep_req= %d, ep = %d", - status, ep_num); + dev_vdbg(&udc->gadget.dev, + "status of process_ep_req= %d, ep = %d\n", + status, ep_num); if (status == REQ_UNCOMPLETE) break; /* write back status to req */ @@ -1821,7 +1829,7 @@ static void reset_irq(struct fsl_udc *udc) while (fsl_readl(&dr_regs->endpointprime)) { /* Wait until all endptprime bits cleared */ if (time_after(jiffies, timeout)) { - ERR("Timeout for reset\n"); + dev_err(&udc->gadget.dev, "Timeout for reset\n"); break; } cpu_relax(); @@ -1831,7 +1839,7 @@ static void reset_irq(struct fsl_udc *udc) fsl_writel(0xffffffff, &dr_regs->endptflush); if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) { - VDBG("Bus reset"); + dev_vdbg(&udc->gadget.dev, "Bus reset\n"); /* Bus is reseting */ udc->bus_reset = 1; /* Reset all the queues, include XD, dTD, EP queue @@ -1839,7 +1847,7 @@ static void reset_irq(struct fsl_udc *udc) reset_queues(udc, true); udc->usb_state = USB_STATE_DEFAULT; } else { - VDBG("Controller reset"); + dev_vdbg(&udc->gadget.dev, "Controller reset\n"); /* initialize usb hw reg except for regs for EP, not * touch usbintr reg */ dr_controller_setup(udc); @@ -1873,7 +1881,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) /* Clear notification bits */ fsl_writel(irq_src, &dr_regs->usbsts); - /* VDBG("irq_src [0x%8x]", irq_src); */ + /* dev_vdbg(&udc->gadget.dev, "irq_src [0x%8x]", irq_src); */ /* Need to resume? */ if (udc->usb_state == USB_STATE_SUSPENDED) @@ -1882,7 +1890,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) /* USB Interrupt */ if (irq_src & USB_STS_INT) { - VDBG("Packet int"); + dev_vdbg(&udc->gadget.dev, "Packet int\n"); /* Setup package, we only support ep0 as control ep */ if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) { tripwire_handler(udc, 0, @@ -1911,7 +1919,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) /* Reset Received */ if (irq_src & USB_STS_RESET) { - VDBG("reset int"); + dev_vdbg(&udc->gadget.dev, "reset int\n"); reset_irq(udc); status = IRQ_HANDLED; } @@ -1923,7 +1931,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) } if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) { - VDBG("Error IRQ %x", irq_src); + dev_vdbg(&udc->gadget.dev, "Error IRQ %x\n", irq_src); } spin_unlock_irqrestore(&udc->lock, flags); @@ -1959,7 +1967,7 @@ static int fsl_udc_start(struct usb_gadget *g, udc_controller->transceiver->otg, &udc_controller->gadget); if (retval < 0) { - ERR("can't bind to transceiver\n"); + dev_err(&udc_controller->gadget.dev, "can't bind to transceiver\n"); udc_controller->driver = NULL; return retval; } @@ -2244,7 +2252,7 @@ static int struct_udc_setup(struct fsl_udc *udc, udc->eps = kcalloc(udc->max_ep, sizeof(struct fsl_ep), GFP_KERNEL); if (!udc->eps) { - ERR("kmalloc udc endpoint status failed\n"); + dev_err(&udc->gadget.dev, "kmalloc udc endpoint status failed\n"); goto eps_alloc_failed; } @@ -2259,7 +2267,7 @@ static int struct_udc_setup(struct fsl_udc *udc, udc->ep_qh = dma_alloc_coherent(&pdev->dev, size, &udc->ep_qh_dma, GFP_KERNEL); if (!udc->ep_qh) { - ERR("malloc QHs for udc failed\n"); + dev_err(&udc->gadget.dev, "malloc QHs for udc failed\n"); goto ep_queue_alloc_failed; } @@ -2270,14 +2278,14 @@ static int struct_udc_setup(struct fsl_udc *udc, udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL), struct fsl_req, req); if (!udc->status_req) { - ERR("kzalloc for udc status request failed\n"); + dev_err(&udc->gadget.dev, "kzalloc for udc status request failed\n"); goto udc_status_alloc_failed; } /* allocate a small amount of memory to get valid address */ udc->status_req->req.buf = kmalloc(8, GFP_KERNEL); if (!udc->status_req->req.buf) { - ERR("kzalloc for udc request buffer failed\n"); + dev_err(&udc->gadget.dev, "kzalloc for udc request buffer failed\n"); goto udc_req_buf_alloc_failed; } @@ -2374,7 +2382,7 @@ static int fsl_udc_probe(struct platform_device *pdev) if (pdata->operating_mode == FSL_USB2_DR_OTG) { udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(udc_controller->transceiver)) { - ERR("Can't find OTG driver!\n"); + dev_err(&udc_controller->gadget.dev, "Can't find OTG driver!\n"); ret = -ENODEV; goto err_kfree; } @@ -2390,7 +2398,7 @@ static int fsl_udc_probe(struct platform_device *pdev) if (pdata->operating_mode == FSL_USB2_DR_DEVICE) { if (!request_mem_region(res->start, resource_size(res), driver_name)) { - ERR("request mem region for %s failed\n", pdev->name); + dev_err(&udc_controller->gadget.dev, "request mem region for %s failed\n", pdev->name); ret = -EBUSY; goto err_kfree; } @@ -2421,7 +2429,7 @@ static int fsl_udc_probe(struct platform_device *pdev) /* Read Device Controller Capability Parameters register */ dccparams = fsl_readl(&dr_regs->dccparams); if (!(dccparams & DCCPARAMS_DC)) { - ERR("This SOC doesn't support device role\n"); + dev_err(&udc_controller->gadget.dev, "This SOC doesn't support device role\n"); ret = -ENODEV; goto err_exit; } @@ -2439,14 +2447,14 @@ static int fsl_udc_probe(struct platform_device *pdev) ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED, driver_name, udc_controller); if (ret != 0) { - ERR("cannot request irq %d err %d\n", + dev_err(&udc_controller->gadget.dev, "cannot request irq %d err %d\n", udc_controller->irq, ret); goto err_exit; } /* Initialize the udc structure including QH member and other member */ if (struct_udc_setup(udc_controller, pdev)) { - ERR("Can't initialize udc data structure\n"); + dev_err(&udc_controller->gadget.dev, "Can't initialize udc data structure\n"); ret = -ENOMEM; goto err_free_irq; } @@ -2487,7 +2495,7 @@ static int fsl_udc_probe(struct platform_device *pdev) /* setup the udc->eps[] for non-control endpoints and link * to gadget.ep_list */ for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) { - char name[14]; + char name[16]; sprintf(name, "ep%dout", i); struct_ep_setup(udc_controller, i * 2, name, 1); @@ -2533,15 +2541,18 @@ err_kfree: /* Driver removal function * Free resources and finish pending transactions */ -static int fsl_udc_remove(struct platform_device *pdev) +static void fsl_udc_remove(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); DECLARE_COMPLETION_ONSTACK(done); - if (!udc_controller) - return -ENODEV; + if (!udc_controller) { + dev_err(&pdev->dev, + "Driver still in use but removing anyhow\n"); + return; + } udc_controller->done = &done; usb_del_gadget_udc(&udc_controller->gadget); @@ -2569,8 +2580,6 @@ static int fsl_udc_remove(struct platform_device *pdev) */ if (pdata->exit) pdata->exit(pdev); - - return 0; } /*----------------------------------------------------------------- @@ -2666,7 +2675,17 @@ static const struct platform_device_id fsl_udc_devtype[] = { } }; MODULE_DEVICE_TABLE(platform, fsl_udc_devtype); + +static const struct of_device_id fsl_udc_dt_ids[] = { + { .compatible = "fsl-usb2-dr" }, + { .compatible = "fsl-usb2-mph" }, + { .compatible = "fsl,mpc5121-usb2-dr" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, fsl_udc_dt_ids); + static struct platform_driver udc_driver = { + .probe = fsl_udc_probe, .remove = fsl_udc_remove, .id_table = fsl_udc_devtype, /* these suspend and resume are not usb suspend and resume */ @@ -2674,13 +2693,14 @@ static struct platform_driver udc_driver = { .resume = fsl_udc_resume, .driver = { .name = driver_name, + .of_match_table = fsl_udc_dt_ids, /* udc suspend/resume called from OTG driver */ .suspend = fsl_udc_otg_suspend, .resume = fsl_udc_otg_resume, }, }; -module_platform_driver_probe(udc_driver, fsl_udc_probe); +module_platform_driver(udc_driver); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR(DRIVER_AUTHOR); diff --git a/drivers/usb/gadget/udc/fsl_usb2_udc.h b/drivers/usb/gadget/udc/fsl_usb2_udc.h index 2efc5a930b48..cc1756f3e89d 100644 --- a/drivers/usb/gadget/udc/fsl_usb2_udc.h +++ b/drivers/usb/gadget/udc/fsl_usb2_udc.h @@ -508,53 +508,6 @@ struct fsl_udc { /*-------------------------------------------------------------------------*/ -#ifdef DEBUG -#define DBG(fmt, args...) printk(KERN_DEBUG "[%s] " fmt "\n", \ - __func__, ## args) -#else -#define DBG(fmt, args...) do{}while(0) -#endif - -#if 0 -static void dump_msg(const char *label, const u8 * buf, unsigned int length) -{ - unsigned int start, num, i; - char line[52], *p; - - if (length >= 512) - return; - DBG("%s, length %u:\n", label, length); - start = 0; - while (length > 0) { - num = min(length, 16u); - p = line; - for (i = 0; i < num; ++i) { - if (i == 8) - *p++ = ' '; - sprintf(p, " %02x", buf[i]); - p += 3; - } - *p = 0; - printk(KERN_DEBUG "%6x: %s\n", start, line); - buf += num; - start += num; - length -= num; - } -} -#endif - -#ifdef VERBOSE -#define VDBG DBG -#else -#define VDBG(stuff...) do{}while(0) -#endif - -#define ERR(stuff...) pr_err("udc: " stuff) -#define WARNING(stuff...) pr_warn("udc: " stuff) -#define INFO(stuff...) pr_info("udc: " stuff) - -/*-------------------------------------------------------------------------*/ - /* ### Add board specific defines here */ diff --git a/drivers/usb/gadget/udc/fusb300_udc.c b/drivers/usb/gadget/udc/fusb300_udc.c deleted file mode 100644 index bd03d475f927..000000000000 --- a/drivers/usb/gadget/udc/fusb300_udc.c +++ /dev/null @@ -1,1515 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Fusb300 UDC (USB gadget) - * - * Copyright (C) 2010 Faraday Technology Corp. - * - * Author : Yuan-hsin Chen <yhchen@faraday-tech.com> - */ -#include <linux/dma-mapping.h> -#include <linux/err.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include "fusb300_udc.h" - -MODULE_DESCRIPTION("FUSB300 USB gadget driver"); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Yuan-Hsin Chen, Feng-Hsin Chiang <john453@faraday-tech.com>"); -MODULE_ALIAS("platform:fusb300_udc"); - -#define DRIVER_VERSION "20 October 2010" - -static const char udc_name[] = "fusb300_udc"; -static const char * const fusb300_ep_name[] = { - "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7", "ep8", "ep9", - "ep10", "ep11", "ep12", "ep13", "ep14", "ep15" -}; - -static void done(struct fusb300_ep *ep, struct fusb300_request *req, - int status); - -static void fusb300_enable_bit(struct fusb300 *fusb300, u32 offset, - u32 value) -{ - u32 reg = ioread32(fusb300->reg + offset); - - reg |= value; - iowrite32(reg, fusb300->reg + offset); -} - -static void fusb300_disable_bit(struct fusb300 *fusb300, u32 offset, - u32 value) -{ - u32 reg = ioread32(fusb300->reg + offset); - - reg &= ~value; - iowrite32(reg, fusb300->reg + offset); -} - - -static void fusb300_ep_setting(struct fusb300_ep *ep, - struct fusb300_ep_info info) -{ - ep->epnum = info.epnum; - ep->type = info.type; -} - -static int fusb300_ep_release(struct fusb300_ep *ep) -{ - if (!ep->epnum) - return 0; - ep->epnum = 0; - ep->stall = 0; - ep->wedged = 0; - return 0; -} - -static void fusb300_set_fifo_entry(struct fusb300 *fusb300, - u32 ep) -{ - u32 val = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); - - val &= ~FUSB300_EPSET1_FIFOENTRY_MSK; - val |= FUSB300_EPSET1_FIFOENTRY(FUSB300_FIFO_ENTRY_NUM); - iowrite32(val, fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); -} - -static void fusb300_set_start_entry(struct fusb300 *fusb300, - u8 ep) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); - u32 start_entry = fusb300->fifo_entry_num * FUSB300_FIFO_ENTRY_NUM; - - reg &= ~FUSB300_EPSET1_START_ENTRY_MSK ; - reg |= FUSB300_EPSET1_START_ENTRY(start_entry); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); - if (fusb300->fifo_entry_num == FUSB300_MAX_FIFO_ENTRY) { - fusb300->fifo_entry_num = 0; - fusb300->addrofs = 0; - pr_err("fifo entry is over the maximum number!\n"); - } else - fusb300->fifo_entry_num++; -} - -/* set fusb300_set_start_entry first before fusb300_set_epaddrofs */ -static void fusb300_set_epaddrofs(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum)); - - reg &= ~FUSB300_EPSET2_ADDROFS_MSK; - reg |= FUSB300_EPSET2_ADDROFS(fusb300->addrofs); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum)); - fusb300->addrofs += (info.maxpacket + 7) / 8 * FUSB300_FIFO_ENTRY_NUM; -} - -static void ep_fifo_setting(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - fusb300_set_fifo_entry(fusb300, info.epnum); - fusb300_set_start_entry(fusb300, info.epnum); - fusb300_set_epaddrofs(fusb300, info); -} - -static void fusb300_set_eptype(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); - - reg &= ~FUSB300_EPSET1_TYPE_MSK; - reg |= FUSB300_EPSET1_TYPE(info.type); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); -} - -static void fusb300_set_epdir(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg; - - if (!info.dir_in) - return; - reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); - reg &= ~FUSB300_EPSET1_DIR_MSK; - reg |= FUSB300_EPSET1_DIRIN; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); -} - -static void fusb300_set_ep_active(struct fusb300 *fusb300, - u8 ep) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); - - reg |= FUSB300_EPSET1_ACTEN; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(ep)); -} - -static void fusb300_set_epmps(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum)); - - reg &= ~FUSB300_EPSET2_MPS_MSK; - reg |= FUSB300_EPSET2_MPS(info.maxpacket); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET2(info.epnum)); -} - -static void fusb300_set_interval(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); - - reg &= ~FUSB300_EPSET1_INTERVAL(0x7); - reg |= FUSB300_EPSET1_INTERVAL(info.interval); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); -} - -static void fusb300_set_bwnum(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); - - reg &= ~FUSB300_EPSET1_BWNUM(0x3); - reg |= FUSB300_EPSET1_BWNUM(info.bw_num); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET1(info.epnum)); -} - -static void set_ep_reg(struct fusb300 *fusb300, - struct fusb300_ep_info info) -{ - fusb300_set_eptype(fusb300, info); - fusb300_set_epdir(fusb300, info); - fusb300_set_epmps(fusb300, info); - - if (info.interval) - fusb300_set_interval(fusb300, info); - - if (info.bw_num) - fusb300_set_bwnum(fusb300, info); - - fusb300_set_ep_active(fusb300, info.epnum); -} - -static int config_ep(struct fusb300_ep *ep, - const struct usb_endpoint_descriptor *desc) -{ - struct fusb300 *fusb300 = ep->fusb300; - struct fusb300_ep_info info; - - ep->ep.desc = desc; - - info.interval = 0; - info.addrofs = 0; - info.bw_num = 0; - - info.type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; - info.dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; - info.maxpacket = usb_endpoint_maxp(desc); - info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; - - if ((info.type == USB_ENDPOINT_XFER_INT) || - (info.type == USB_ENDPOINT_XFER_ISOC)) { - info.interval = desc->bInterval; - if (info.type == USB_ENDPOINT_XFER_ISOC) - info.bw_num = usb_endpoint_maxp_mult(desc); - } - - ep_fifo_setting(fusb300, info); - - set_ep_reg(fusb300, info); - - fusb300_ep_setting(ep, info); - - fusb300->ep[info.epnum] = ep; - - return 0; -} - -static int fusb300_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct fusb300_ep *ep; - - ep = container_of(_ep, struct fusb300_ep, ep); - - if (ep->fusb300->reenum) { - ep->fusb300->fifo_entry_num = 0; - ep->fusb300->addrofs = 0; - ep->fusb300->reenum = 0; - } - - return config_ep(ep, desc); -} - -static int fusb300_disable(struct usb_ep *_ep) -{ - struct fusb300_ep *ep; - struct fusb300_request *req; - unsigned long flags; - - ep = container_of(_ep, struct fusb300_ep, ep); - - BUG_ON(!ep); - - while (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, struct fusb300_request, queue); - spin_lock_irqsave(&ep->fusb300->lock, flags); - done(ep, req, -ECONNRESET); - spin_unlock_irqrestore(&ep->fusb300->lock, flags); - } - - return fusb300_ep_release(ep); -} - -static struct usb_request *fusb300_alloc_request(struct usb_ep *_ep, - gfp_t gfp_flags) -{ - struct fusb300_request *req; - - req = kzalloc(sizeof(struct fusb300_request), gfp_flags); - if (!req) - return NULL; - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void fusb300_free_request(struct usb_ep *_ep, struct usb_request *_req) -{ - struct fusb300_request *req; - - req = container_of(_req, struct fusb300_request, req); - kfree(req); -} - -static int enable_fifo_int(struct fusb300_ep *ep) -{ - struct fusb300 *fusb300 = ep->fusb300; - - if (ep->epnum) { - fusb300_enable_bit(fusb300, FUSB300_OFFSET_IGER0, - FUSB300_IGER0_EEPn_FIFO_INT(ep->epnum)); - } else { - pr_err("can't enable_fifo_int ep0\n"); - return -EINVAL; - } - - return 0; -} - -static int disable_fifo_int(struct fusb300_ep *ep) -{ - struct fusb300 *fusb300 = ep->fusb300; - - if (ep->epnum) { - fusb300_disable_bit(fusb300, FUSB300_OFFSET_IGER0, - FUSB300_IGER0_EEPn_FIFO_INT(ep->epnum)); - } else { - pr_err("can't disable_fifo_int ep0\n"); - return -EINVAL; - } - - return 0; -} - -static void fusb300_set_cxlen(struct fusb300 *fusb300, u32 length) -{ - u32 reg; - - reg = ioread32(fusb300->reg + FUSB300_OFFSET_CSR); - reg &= ~FUSB300_CSR_LEN_MSK; - reg |= FUSB300_CSR_LEN(length); - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_CSR); -} - -/* write data to cx fifo */ -static void fusb300_wrcxf(struct fusb300_ep *ep, - struct fusb300_request *req) -{ - int i = 0; - u8 *tmp; - u32 data; - struct fusb300 *fusb300 = ep->fusb300; - u32 length = req->req.length - req->req.actual; - - tmp = req->req.buf + req->req.actual; - - if (length > SS_CTL_MAX_PACKET_SIZE) { - fusb300_set_cxlen(fusb300, SS_CTL_MAX_PACKET_SIZE); - for (i = (SS_CTL_MAX_PACKET_SIZE >> 2); i > 0; i--) { - data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16 | - *(tmp + 3) << 24; - iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT); - tmp += 4; - } - req->req.actual += SS_CTL_MAX_PACKET_SIZE; - } else { /* length is less than max packet size */ - fusb300_set_cxlen(fusb300, length); - for (i = length >> 2; i > 0; i--) { - data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16 | - *(tmp + 3) << 24; - printk(KERN_DEBUG " 0x%x\n", data); - iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT); - tmp = tmp + 4; - } - switch (length % 4) { - case 1: - data = *tmp; - printk(KERN_DEBUG " 0x%x\n", data); - iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT); - break; - case 2: - data = *tmp | *(tmp + 1) << 8; - printk(KERN_DEBUG " 0x%x\n", data); - iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT); - break; - case 3: - data = *tmp | *(tmp + 1) << 8 | *(tmp + 2) << 16; - printk(KERN_DEBUG " 0x%x\n", data); - iowrite32(data, fusb300->reg + FUSB300_OFFSET_CXPORT); - break; - default: - break; - } - req->req.actual += length; - } -} - -static void fusb300_set_epnstall(struct fusb300 *fusb300, u8 ep) -{ - fusb300_enable_bit(fusb300, FUSB300_OFFSET_EPSET0(ep), - FUSB300_EPSET0_STL); -} - -static void fusb300_clear_epnstall(struct fusb300 *fusb300, u8 ep) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET0(ep)); - - if (reg & FUSB300_EPSET0_STL) { - printk(KERN_DEBUG "EP%d stall... Clear!!\n", ep); - reg |= FUSB300_EPSET0_STL_CLR; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_EPSET0(ep)); - } -} - -static void ep0_queue(struct fusb300_ep *ep, struct fusb300_request *req) -{ - if (ep->fusb300->ep0_dir) { /* if IN */ - if (req->req.length) { - fusb300_wrcxf(ep, req); - } else - printk(KERN_DEBUG "%s : req->req.length = 0x%x\n", - __func__, req->req.length); - if ((req->req.length == req->req.actual) || - (req->req.actual < ep->ep.maxpacket)) - done(ep, req, 0); - } else { /* OUT */ - if (!req->req.length) - done(ep, req, 0); - else - fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER1, - FUSB300_IGER1_CX_OUT_INT); - } -} - -static int fusb300_queue(struct usb_ep *_ep, struct usb_request *_req, - gfp_t gfp_flags) -{ - struct fusb300_ep *ep; - struct fusb300_request *req; - unsigned long flags; - int request = 0; - - ep = container_of(_ep, struct fusb300_ep, ep); - req = container_of(_req, struct fusb300_request, req); - - if (ep->fusb300->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - spin_lock_irqsave(&ep->fusb300->lock, flags); - - if (list_empty(&ep->queue)) - request = 1; - - list_add_tail(&req->queue, &ep->queue); - - req->req.actual = 0; - req->req.status = -EINPROGRESS; - - if (ep->ep.desc == NULL) /* ep0 */ - ep0_queue(ep, req); - else if (request && !ep->stall) - enable_fifo_int(ep); - - spin_unlock_irqrestore(&ep->fusb300->lock, flags); - - return 0; -} - -static int fusb300_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct fusb300_ep *ep; - struct fusb300_request *req; - unsigned long flags; - - ep = container_of(_ep, struct fusb300_ep, ep); - req = container_of(_req, struct fusb300_request, req); - - spin_lock_irqsave(&ep->fusb300->lock, flags); - if (!list_empty(&ep->queue)) - done(ep, req, -ECONNRESET); - spin_unlock_irqrestore(&ep->fusb300->lock, flags); - - return 0; -} - -static int fusb300_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedge) -{ - struct fusb300_ep *ep; - struct fusb300 *fusb300; - unsigned long flags; - int ret = 0; - - ep = container_of(_ep, struct fusb300_ep, ep); - - fusb300 = ep->fusb300; - - spin_lock_irqsave(&ep->fusb300->lock, flags); - - if (!list_empty(&ep->queue)) { - ret = -EAGAIN; - goto out; - } - - if (value) { - fusb300_set_epnstall(fusb300, ep->epnum); - ep->stall = 1; - if (wedge) - ep->wedged = 1; - } else { - fusb300_clear_epnstall(fusb300, ep->epnum); - ep->stall = 0; - ep->wedged = 0; - } - -out: - spin_unlock_irqrestore(&ep->fusb300->lock, flags); - return ret; -} - -static int fusb300_set_halt(struct usb_ep *_ep, int value) -{ - return fusb300_set_halt_and_wedge(_ep, value, 0); -} - -static int fusb300_set_wedge(struct usb_ep *_ep) -{ - return fusb300_set_halt_and_wedge(_ep, 1, 1); -} - -static void fusb300_fifo_flush(struct usb_ep *_ep) -{ -} - -static const struct usb_ep_ops fusb300_ep_ops = { - .enable = fusb300_enable, - .disable = fusb300_disable, - - .alloc_request = fusb300_alloc_request, - .free_request = fusb300_free_request, - - .queue = fusb300_queue, - .dequeue = fusb300_dequeue, - - .set_halt = fusb300_set_halt, - .fifo_flush = fusb300_fifo_flush, - .set_wedge = fusb300_set_wedge, -}; - -/*****************************************************************************/ -static void fusb300_clear_int(struct fusb300 *fusb300, u32 offset, - u32 value) -{ - iowrite32(value, fusb300->reg + offset); -} - -static void fusb300_reset(void) -{ -} - -static void fusb300_set_cxstall(struct fusb300 *fusb300) -{ - fusb300_enable_bit(fusb300, FUSB300_OFFSET_CSR, - FUSB300_CSR_STL); -} - -static void fusb300_set_cxdone(struct fusb300 *fusb300) -{ - fusb300_enable_bit(fusb300, FUSB300_OFFSET_CSR, - FUSB300_CSR_DONE); -} - -/* read data from cx fifo */ -static void fusb300_rdcxf(struct fusb300 *fusb300, - u8 *buffer, u32 length) -{ - int i = 0; - u8 *tmp; - u32 data; - - tmp = buffer; - - for (i = (length >> 2); i > 0; i--) { - data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT); - printk(KERN_DEBUG " 0x%x\n", data); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - *(tmp + 2) = (data >> 16) & 0xFF; - *(tmp + 3) = (data >> 24) & 0xFF; - tmp = tmp + 4; - } - - switch (length % 4) { - case 1: - data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT); - printk(KERN_DEBUG " 0x%x\n", data); - *tmp = data & 0xFF; - break; - case 2: - data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT); - printk(KERN_DEBUG " 0x%x\n", data); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - break; - case 3: - data = ioread32(fusb300->reg + FUSB300_OFFSET_CXPORT); - printk(KERN_DEBUG " 0x%x\n", data); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - *(tmp + 2) = (data >> 16) & 0xFF; - break; - default: - break; - } -} - -static void fusb300_rdfifo(struct fusb300_ep *ep, - struct fusb300_request *req, - u32 length) -{ - int i = 0; - u8 *tmp; - u32 data, reg; - struct fusb300 *fusb300 = ep->fusb300; - - tmp = req->req.buf + req->req.actual; - req->req.actual += length; - - if (req->req.actual > req->req.length) - printk(KERN_DEBUG "req->req.actual > req->req.length\n"); - - for (i = (length >> 2); i > 0; i--) { - data = ioread32(fusb300->reg + - FUSB300_OFFSET_EPPORT(ep->epnum)); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - *(tmp + 2) = (data >> 16) & 0xFF; - *(tmp + 3) = (data >> 24) & 0xFF; - tmp = tmp + 4; - } - - switch (length % 4) { - case 1: - data = ioread32(fusb300->reg + - FUSB300_OFFSET_EPPORT(ep->epnum)); - *tmp = data & 0xFF; - break; - case 2: - data = ioread32(fusb300->reg + - FUSB300_OFFSET_EPPORT(ep->epnum)); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - break; - case 3: - data = ioread32(fusb300->reg + - FUSB300_OFFSET_EPPORT(ep->epnum)); - *tmp = data & 0xFF; - *(tmp + 1) = (data >> 8) & 0xFF; - *(tmp + 2) = (data >> 16) & 0xFF; - break; - default: - break; - } - - do { - reg = ioread32(fusb300->reg + FUSB300_OFFSET_IGR1); - reg &= FUSB300_IGR1_SYNF0_EMPTY_INT; - if (i) - printk(KERN_INFO "sync fifo is not empty!\n"); - i++; - } while (!reg); -} - -static u8 fusb300_get_epnstall(struct fusb300 *fusb300, u8 ep) -{ - u8 value; - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPSET0(ep)); - - value = reg & FUSB300_EPSET0_STL; - - return value; -} - -static u8 fusb300_get_cxstall(struct fusb300 *fusb300) -{ - u8 value; - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_CSR); - - value = (reg & FUSB300_CSR_STL) >> 1; - - return value; -} - -static void request_error(struct fusb300 *fusb300) -{ - fusb300_set_cxstall(fusb300); - printk(KERN_DEBUG "request error!!\n"); -} - -static void get_status(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl) -__releases(fusb300->lock) -__acquires(fusb300->lock) -{ - u8 ep; - u16 status = 0; - u16 w_index = ctrl->wIndex; - - switch (ctrl->bRequestType & USB_RECIP_MASK) { - case USB_RECIP_DEVICE: - status = 1 << USB_DEVICE_SELF_POWERED; - break; - case USB_RECIP_INTERFACE: - status = 0; - break; - case USB_RECIP_ENDPOINT: - ep = w_index & USB_ENDPOINT_NUMBER_MASK; - if (ep) { - if (fusb300_get_epnstall(fusb300, ep)) - status = 1 << USB_ENDPOINT_HALT; - } else { - if (fusb300_get_cxstall(fusb300)) - status = 0; - } - break; - - default: - request_error(fusb300); - return; /* exit */ - } - - fusb300->ep0_data = cpu_to_le16(status); - fusb300->ep0_req->buf = &fusb300->ep0_data; - fusb300->ep0_req->length = 2; - - spin_unlock(&fusb300->lock); - fusb300_queue(fusb300->gadget.ep0, fusb300->ep0_req, GFP_KERNEL); - spin_lock(&fusb300->lock); -} - -static void set_feature(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl) -{ - u8 ep; - - switch (ctrl->bRequestType & USB_RECIP_MASK) { - case USB_RECIP_DEVICE: - fusb300_set_cxdone(fusb300); - break; - case USB_RECIP_INTERFACE: - fusb300_set_cxdone(fusb300); - break; - case USB_RECIP_ENDPOINT: { - u16 w_index = le16_to_cpu(ctrl->wIndex); - - ep = w_index & USB_ENDPOINT_NUMBER_MASK; - if (ep) - fusb300_set_epnstall(fusb300, ep); - else - fusb300_set_cxstall(fusb300); - fusb300_set_cxdone(fusb300); - } - break; - default: - request_error(fusb300); - break; - } -} - -static void fusb300_clear_seqnum(struct fusb300 *fusb300, u8 ep) -{ - fusb300_enable_bit(fusb300, FUSB300_OFFSET_EPSET0(ep), - FUSB300_EPSET0_CLRSEQNUM); -} - -static void clear_feature(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl) -{ - struct fusb300_ep *ep = - fusb300->ep[ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK]; - - switch (ctrl->bRequestType & USB_RECIP_MASK) { - case USB_RECIP_DEVICE: - fusb300_set_cxdone(fusb300); - break; - case USB_RECIP_INTERFACE: - fusb300_set_cxdone(fusb300); - break; - case USB_RECIP_ENDPOINT: - if (ctrl->wIndex & USB_ENDPOINT_NUMBER_MASK) { - if (ep->wedged) { - fusb300_set_cxdone(fusb300); - break; - } - if (ep->stall) { - ep->stall = 0; - fusb300_clear_seqnum(fusb300, ep->epnum); - fusb300_clear_epnstall(fusb300, ep->epnum); - if (!list_empty(&ep->queue)) - enable_fifo_int(ep); - } - } - fusb300_set_cxdone(fusb300); - break; - default: - request_error(fusb300); - break; - } -} - -static void fusb300_set_dev_addr(struct fusb300 *fusb300, u16 addr) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_DAR); - - reg &= ~FUSB300_DAR_DRVADDR_MSK; - reg |= FUSB300_DAR_DRVADDR(addr); - - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_DAR); -} - -static void set_address(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl) -{ - if (ctrl->wValue >= 0x0100) - request_error(fusb300); - else { - fusb300_set_dev_addr(fusb300, ctrl->wValue); - fusb300_set_cxdone(fusb300); - } -} - -#define UVC_COPY_DESCRIPTORS(mem, src) \ - do { \ - const struct usb_descriptor_header * const *__src; \ - for (__src = src; *__src; ++__src) { \ - memcpy(mem, *__src, (*__src)->bLength); \ - mem += (*__src)->bLength; \ - } \ - } while (0) - -static int setup_packet(struct fusb300 *fusb300, struct usb_ctrlrequest *ctrl) -{ - u8 *p = (u8 *)ctrl; - u8 ret = 0; - u8 i = 0; - - fusb300_rdcxf(fusb300, p, 8); - fusb300->ep0_dir = ctrl->bRequestType & USB_DIR_IN; - fusb300->ep0_length = ctrl->wLength; - - /* check request */ - if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - switch (ctrl->bRequest) { - case USB_REQ_GET_STATUS: - get_status(fusb300, ctrl); - break; - case USB_REQ_CLEAR_FEATURE: - clear_feature(fusb300, ctrl); - break; - case USB_REQ_SET_FEATURE: - set_feature(fusb300, ctrl); - break; - case USB_REQ_SET_ADDRESS: - set_address(fusb300, ctrl); - break; - case USB_REQ_SET_CONFIGURATION: - fusb300_enable_bit(fusb300, FUSB300_OFFSET_DAR, - FUSB300_DAR_SETCONFG); - /* clear sequence number */ - for (i = 1; i <= FUSB300_MAX_NUM_EP; i++) - fusb300_clear_seqnum(fusb300, i); - fusb300->reenum = 1; - ret = 1; - break; - default: - ret = 1; - break; - } - } else - ret = 1; - - return ret; -} - -static void done(struct fusb300_ep *ep, struct fusb300_request *req, - int status) -{ - list_del_init(&req->queue); - - /* don't modify queue heads during completion callback */ - if (ep->fusb300->gadget.speed == USB_SPEED_UNKNOWN) - req->req.status = -ESHUTDOWN; - else - req->req.status = status; - - spin_unlock(&ep->fusb300->lock); - usb_gadget_giveback_request(&ep->ep, &req->req); - spin_lock(&ep->fusb300->lock); - - if (ep->epnum) { - disable_fifo_int(ep); - if (!list_empty(&ep->queue)) - enable_fifo_int(ep); - } else - fusb300_set_cxdone(ep->fusb300); -} - -static void fusb300_fill_idma_prdtbl(struct fusb300_ep *ep, dma_addr_t d, - u32 len) -{ - u32 value; - u32 reg; - - /* wait SW owner */ - do { - reg = ioread32(ep->fusb300->reg + - FUSB300_OFFSET_EPPRD_W0(ep->epnum)); - reg &= FUSB300_EPPRD0_H; - } while (reg); - - iowrite32(d, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W1(ep->epnum)); - - value = FUSB300_EPPRD0_BTC(len) | FUSB300_EPPRD0_H | - FUSB300_EPPRD0_F | FUSB300_EPPRD0_L | FUSB300_EPPRD0_I; - iowrite32(value, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W0(ep->epnum)); - - iowrite32(0x0, ep->fusb300->reg + FUSB300_OFFSET_EPPRD_W2(ep->epnum)); - - fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_EPPRDRDY, - FUSB300_EPPRDR_EP_PRD_RDY(ep->epnum)); -} - -static void fusb300_wait_idma_finished(struct fusb300_ep *ep) -{ - u32 reg; - - do { - reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGR1); - if ((reg & FUSB300_IGR1_VBUS_CHG_INT) || - (reg & FUSB300_IGR1_WARM_RST_INT) || - (reg & FUSB300_IGR1_HOT_RST_INT) || - (reg & FUSB300_IGR1_USBRST_INT) - ) - goto IDMA_RESET; - reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGR0); - reg &= FUSB300_IGR0_EPn_PRD_INT(ep->epnum); - } while (!reg); - - fusb300_clear_int(ep->fusb300, FUSB300_OFFSET_IGR0, - FUSB300_IGR0_EPn_PRD_INT(ep->epnum)); - return; - -IDMA_RESET: - reg = ioread32(ep->fusb300->reg + FUSB300_OFFSET_IGER0); - reg &= ~FUSB300_IGER0_EEPn_PRD_INT(ep->epnum); - iowrite32(reg, ep->fusb300->reg + FUSB300_OFFSET_IGER0); -} - -static void fusb300_set_idma(struct fusb300_ep *ep, - struct fusb300_request *req) -{ - int ret; - - ret = usb_gadget_map_request(&ep->fusb300->gadget, - &req->req, DMA_TO_DEVICE); - if (ret) - return; - - fusb300_enable_bit(ep->fusb300, FUSB300_OFFSET_IGER0, - FUSB300_IGER0_EEPn_PRD_INT(ep->epnum)); - - fusb300_fill_idma_prdtbl(ep, req->req.dma, req->req.length); - /* check idma is done */ - fusb300_wait_idma_finished(ep); - - usb_gadget_unmap_request(&ep->fusb300->gadget, - &req->req, DMA_TO_DEVICE); -} - -static void in_ep_fifo_handler(struct fusb300_ep *ep) -{ - struct fusb300_request *req = list_entry(ep->queue.next, - struct fusb300_request, queue); - - if (req->req.length) - fusb300_set_idma(ep, req); - done(ep, req, 0); -} - -static void out_ep_fifo_handler(struct fusb300_ep *ep) -{ - struct fusb300 *fusb300 = ep->fusb300; - struct fusb300_request *req = list_entry(ep->queue.next, - struct fusb300_request, queue); - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_EPFFR(ep->epnum)); - u32 length = reg & FUSB300_FFR_BYCNT; - - fusb300_rdfifo(ep, req, length); - - /* finish out transfer */ - if ((req->req.length == req->req.actual) || (length < ep->ep.maxpacket)) - done(ep, req, 0); -} - -static void check_device_mode(struct fusb300 *fusb300) -{ - u32 reg = ioread32(fusb300->reg + FUSB300_OFFSET_GCR); - - switch (reg & FUSB300_GCR_DEVEN_MSK) { - case FUSB300_GCR_DEVEN_SS: - fusb300->gadget.speed = USB_SPEED_SUPER; - break; - case FUSB300_GCR_DEVEN_HS: - fusb300->gadget.speed = USB_SPEED_HIGH; - break; - case FUSB300_GCR_DEVEN_FS: - fusb300->gadget.speed = USB_SPEED_FULL; - break; - default: - fusb300->gadget.speed = USB_SPEED_UNKNOWN; - break; - } - printk(KERN_INFO "dev_mode = %d\n", (reg & FUSB300_GCR_DEVEN_MSK)); -} - - -static void fusb300_ep0out(struct fusb300 *fusb300) -{ - struct fusb300_ep *ep = fusb300->ep[0]; - u32 reg; - - if (!list_empty(&ep->queue)) { - struct fusb300_request *req; - - req = list_first_entry(&ep->queue, - struct fusb300_request, queue); - if (req->req.length) - fusb300_rdcxf(ep->fusb300, req->req.buf, - req->req.length); - done(ep, req, 0); - reg = ioread32(fusb300->reg + FUSB300_OFFSET_IGER1); - reg &= ~FUSB300_IGER1_CX_OUT_INT; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_IGER1); - } else - pr_err("%s : empty queue\n", __func__); -} - -static void fusb300_ep0in(struct fusb300 *fusb300) -{ - struct fusb300_request *req; - struct fusb300_ep *ep = fusb300->ep[0]; - - if ((!list_empty(&ep->queue)) && (fusb300->ep0_dir)) { - req = list_entry(ep->queue.next, - struct fusb300_request, queue); - if (req->req.length) - fusb300_wrcxf(ep, req); - if ((req->req.length - req->req.actual) < ep->ep.maxpacket) - done(ep, req, 0); - } else - fusb300_set_cxdone(fusb300); -} - -static void fusb300_grp2_handler(void) -{ -} - -static void fusb300_grp3_handler(void) -{ -} - -static void fusb300_grp4_handler(void) -{ -} - -static void fusb300_grp5_handler(void) -{ -} - -static irqreturn_t fusb300_irq(int irq, void *_fusb300) -{ - struct fusb300 *fusb300 = _fusb300; - u32 int_grp1 = ioread32(fusb300->reg + FUSB300_OFFSET_IGR1); - u32 int_grp1_en = ioread32(fusb300->reg + FUSB300_OFFSET_IGER1); - u32 int_grp0 = ioread32(fusb300->reg + FUSB300_OFFSET_IGR0); - u32 int_grp0_en = ioread32(fusb300->reg + FUSB300_OFFSET_IGER0); - struct usb_ctrlrequest ctrl; - u8 in; - u32 reg; - int i; - - spin_lock(&fusb300->lock); - - int_grp1 &= int_grp1_en; - int_grp0 &= int_grp0_en; - - if (int_grp1 & FUSB300_IGR1_WARM_RST_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_WARM_RST_INT); - printk(KERN_INFO"fusb300_warmreset\n"); - fusb300_reset(); - } - - if (int_grp1 & FUSB300_IGR1_HOT_RST_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_HOT_RST_INT); - printk(KERN_INFO"fusb300_hotreset\n"); - fusb300_reset(); - } - - if (int_grp1 & FUSB300_IGR1_USBRST_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_USBRST_INT); - fusb300_reset(); - } - /* COMABT_INT has a highest priority */ - - if (int_grp1 & FUSB300_IGR1_CX_COMABT_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_CX_COMABT_INT); - printk(KERN_INFO"fusb300_ep0abt\n"); - } - - if (int_grp1 & FUSB300_IGR1_VBUS_CHG_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_VBUS_CHG_INT); - printk(KERN_INFO"fusb300_vbus_change\n"); - } - - if (int_grp1 & FUSB300_IGR1_U3_EXIT_FAIL_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U3_EXIT_FAIL_INT); - } - - if (int_grp1 & FUSB300_IGR1_U2_EXIT_FAIL_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U2_EXIT_FAIL_INT); - } - - if (int_grp1 & FUSB300_IGR1_U1_EXIT_FAIL_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U1_EXIT_FAIL_INT); - } - - if (int_grp1 & FUSB300_IGR1_U2_ENTRY_FAIL_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U2_ENTRY_FAIL_INT); - } - - if (int_grp1 & FUSB300_IGR1_U1_ENTRY_FAIL_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U1_ENTRY_FAIL_INT); - } - - if (int_grp1 & FUSB300_IGR1_U3_EXIT_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U3_EXIT_INT); - printk(KERN_INFO "FUSB300_IGR1_U3_EXIT_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_U2_EXIT_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U2_EXIT_INT); - printk(KERN_INFO "FUSB300_IGR1_U2_EXIT_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_U1_EXIT_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U1_EXIT_INT); - printk(KERN_INFO "FUSB300_IGR1_U1_EXIT_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_U3_ENTRY_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U3_ENTRY_INT); - printk(KERN_INFO "FUSB300_IGR1_U3_ENTRY_INT\n"); - fusb300_enable_bit(fusb300, FUSB300_OFFSET_SSCR1, - FUSB300_SSCR1_GO_U3_DONE); - } - - if (int_grp1 & FUSB300_IGR1_U2_ENTRY_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U2_ENTRY_INT); - printk(KERN_INFO "FUSB300_IGR1_U2_ENTRY_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_U1_ENTRY_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_U1_ENTRY_INT); - printk(KERN_INFO "FUSB300_IGR1_U1_ENTRY_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_RESM_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_RESM_INT); - printk(KERN_INFO "fusb300_resume\n"); - } - - if (int_grp1 & FUSB300_IGR1_SUSP_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_SUSP_INT); - printk(KERN_INFO "fusb300_suspend\n"); - } - - if (int_grp1 & FUSB300_IGR1_HS_LPM_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_HS_LPM_INT); - printk(KERN_INFO "fusb300_HS_LPM_INT\n"); - } - - if (int_grp1 & FUSB300_IGR1_DEV_MODE_CHG_INT) { - fusb300_clear_int(fusb300, FUSB300_OFFSET_IGR1, - FUSB300_IGR1_DEV_MODE_CHG_INT); - check_device_mode(fusb300); - } - - if (int_grp1 & FUSB300_IGR1_CX_COMFAIL_INT) { - fusb300_set_cxstall(fusb300); - printk(KERN_INFO "fusb300_ep0fail\n"); - } - - if (int_grp1 & FUSB300_IGR1_CX_SETUP_INT) { - printk(KERN_INFO "fusb300_ep0setup\n"); - if (setup_packet(fusb300, &ctrl)) { - spin_unlock(&fusb300->lock); - if (fusb300->driver->setup(&fusb300->gadget, &ctrl) < 0) - fusb300_set_cxstall(fusb300); - spin_lock(&fusb300->lock); - } - } - - if (int_grp1 & FUSB300_IGR1_CX_CMDEND_INT) - printk(KERN_INFO "fusb300_cmdend\n"); - - - if (int_grp1 & FUSB300_IGR1_CX_OUT_INT) { - printk(KERN_INFO "fusb300_cxout\n"); - fusb300_ep0out(fusb300); - } - - if (int_grp1 & FUSB300_IGR1_CX_IN_INT) { - printk(KERN_INFO "fusb300_cxin\n"); - fusb300_ep0in(fusb300); - } - - if (int_grp1 & FUSB300_IGR1_INTGRP5) - fusb300_grp5_handler(); - - if (int_grp1 & FUSB300_IGR1_INTGRP4) - fusb300_grp4_handler(); - - if (int_grp1 & FUSB300_IGR1_INTGRP3) - fusb300_grp3_handler(); - - if (int_grp1 & FUSB300_IGR1_INTGRP2) - fusb300_grp2_handler(); - - if (int_grp0) { - for (i = 1; i < FUSB300_MAX_NUM_EP; i++) { - if (int_grp0 & FUSB300_IGR0_EPn_FIFO_INT(i)) { - reg = ioread32(fusb300->reg + - FUSB300_OFFSET_EPSET1(i)); - in = (reg & FUSB300_EPSET1_DIRIN) ? 1 : 0; - if (in) - in_ep_fifo_handler(fusb300->ep[i]); - else - out_ep_fifo_handler(fusb300->ep[i]); - } - } - } - - spin_unlock(&fusb300->lock); - - return IRQ_HANDLED; -} - -static void fusb300_set_u2_timeout(struct fusb300 *fusb300, - u32 time) -{ - u32 reg; - - reg = ioread32(fusb300->reg + FUSB300_OFFSET_TT); - reg &= ~0xff; - reg |= FUSB300_SSCR2_U2TIMEOUT(time); - - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_TT); -} - -static void fusb300_set_u1_timeout(struct fusb300 *fusb300, - u32 time) -{ - u32 reg; - - reg = ioread32(fusb300->reg + FUSB300_OFFSET_TT); - reg &= ~(0xff << 8); - reg |= FUSB300_SSCR2_U1TIMEOUT(time); - - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_TT); -} - -static void init_controller(struct fusb300 *fusb300) -{ - u32 reg; - u32 mask = 0; - u32 val = 0; - - /* split on */ - mask = val = FUSB300_AHBBCR_S0_SPLIT_ON | FUSB300_AHBBCR_S1_SPLIT_ON; - reg = ioread32(fusb300->reg + FUSB300_OFFSET_AHBCR); - reg &= ~mask; - reg |= val; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_AHBCR); - - /* enable high-speed LPM */ - mask = val = FUSB300_HSCR_HS_LPM_PERMIT; - reg = ioread32(fusb300->reg + FUSB300_OFFSET_HSCR); - reg &= ~mask; - reg |= val; - iowrite32(reg, fusb300->reg + FUSB300_OFFSET_HSCR); - - /*set u1 u2 timmer*/ - fusb300_set_u2_timeout(fusb300, 0xff); - fusb300_set_u1_timeout(fusb300, 0xff); - - /* enable all grp1 interrupt */ - iowrite32(0xcfffff9f, fusb300->reg + FUSB300_OFFSET_IGER1); -} -/*------------------------------------------------------------------------*/ -static int fusb300_udc_start(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - struct fusb300 *fusb300 = to_fusb300(g); - - /* hook up the driver */ - fusb300->driver = driver; - - return 0; -} - -static int fusb300_udc_stop(struct usb_gadget *g) -{ - struct fusb300 *fusb300 = to_fusb300(g); - - init_controller(fusb300); - fusb300->driver = NULL; - - return 0; -} -/*--------------------------------------------------------------------------*/ - -static int fusb300_udc_pullup(struct usb_gadget *_gadget, int is_active) -{ - return 0; -} - -static const struct usb_gadget_ops fusb300_gadget_ops = { - .pullup = fusb300_udc_pullup, - .udc_start = fusb300_udc_start, - .udc_stop = fusb300_udc_stop, -}; - -static void fusb300_remove(struct platform_device *pdev) -{ - struct fusb300 *fusb300 = platform_get_drvdata(pdev); - int i; - - usb_del_gadget_udc(&fusb300->gadget); - iounmap(fusb300->reg); - free_irq(platform_get_irq(pdev, 0), fusb300); - free_irq(platform_get_irq(pdev, 1), fusb300); - - fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req); - for (i = 0; i < FUSB300_MAX_NUM_EP; i++) - kfree(fusb300->ep[i]); - kfree(fusb300); -} - -static int fusb300_probe(struct platform_device *pdev) -{ - struct resource *res, *ires, *ires1; - void __iomem *reg = NULL; - struct fusb300 *fusb300 = NULL; - struct fusb300_ep *_ep[FUSB300_MAX_NUM_EP]; - int ret = 0; - int i; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - ret = -ENODEV; - pr_err("platform_get_resource error.\n"); - goto clean_up; - } - - ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!ires) { - ret = -ENODEV; - dev_err(&pdev->dev, - "platform_get_resource IORESOURCE_IRQ error.\n"); - goto clean_up; - } - - ires1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1); - if (!ires1) { - ret = -ENODEV; - dev_err(&pdev->dev, - "platform_get_resource IORESOURCE_IRQ 1 error.\n"); - goto clean_up; - } - - reg = ioremap(res->start, resource_size(res)); - if (reg == NULL) { - ret = -ENOMEM; - pr_err("ioremap error.\n"); - goto clean_up; - } - - /* initialize udc */ - fusb300 = kzalloc(sizeof(struct fusb300), GFP_KERNEL); - if (fusb300 == NULL) { - ret = -ENOMEM; - goto clean_up; - } - - for (i = 0; i < FUSB300_MAX_NUM_EP; i++) { - _ep[i] = kzalloc(sizeof(struct fusb300_ep), GFP_KERNEL); - if (_ep[i] == NULL) { - ret = -ENOMEM; - goto clean_up; - } - fusb300->ep[i] = _ep[i]; - } - - spin_lock_init(&fusb300->lock); - - platform_set_drvdata(pdev, fusb300); - - fusb300->gadget.ops = &fusb300_gadget_ops; - - fusb300->gadget.max_speed = USB_SPEED_HIGH; - fusb300->gadget.name = udc_name; - fusb300->reg = reg; - - ret = request_irq(ires->start, fusb300_irq, IRQF_SHARED, - udc_name, fusb300); - if (ret < 0) { - pr_err("request_irq error (%d)\n", ret); - goto clean_up; - } - - ret = request_irq(ires1->start, fusb300_irq, - IRQF_SHARED, udc_name, fusb300); - if (ret < 0) { - pr_err("request_irq1 error (%d)\n", ret); - goto err_request_irq1; - } - - INIT_LIST_HEAD(&fusb300->gadget.ep_list); - - for (i = 0; i < FUSB300_MAX_NUM_EP ; i++) { - struct fusb300_ep *ep = fusb300->ep[i]; - - if (i != 0) { - INIT_LIST_HEAD(&fusb300->ep[i]->ep.ep_list); - list_add_tail(&fusb300->ep[i]->ep.ep_list, - &fusb300->gadget.ep_list); - } - ep->fusb300 = fusb300; - INIT_LIST_HEAD(&ep->queue); - ep->ep.name = fusb300_ep_name[i]; - ep->ep.ops = &fusb300_ep_ops; - usb_ep_set_maxpacket_limit(&ep->ep, HS_BULK_MAX_PACKET_SIZE); - - if (i == 0) { - ep->ep.caps.type_control = true; - } else { - ep->ep.caps.type_iso = true; - ep->ep.caps.type_bulk = true; - ep->ep.caps.type_int = true; - } - - ep->ep.caps.dir_in = true; - ep->ep.caps.dir_out = true; - } - usb_ep_set_maxpacket_limit(&fusb300->ep[0]->ep, HS_CTL_MAX_PACKET_SIZE); - fusb300->ep[0]->epnum = 0; - fusb300->gadget.ep0 = &fusb300->ep[0]->ep; - INIT_LIST_HEAD(&fusb300->gadget.ep0->ep_list); - - fusb300->ep0_req = fusb300_alloc_request(&fusb300->ep[0]->ep, - GFP_KERNEL); - if (fusb300->ep0_req == NULL) { - ret = -ENOMEM; - goto err_alloc_request; - } - - init_controller(fusb300); - ret = usb_add_gadget_udc(&pdev->dev, &fusb300->gadget); - if (ret) - goto err_add_udc; - - dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); - - return 0; - -err_add_udc: - fusb300_free_request(&fusb300->ep[0]->ep, fusb300->ep0_req); - -err_alloc_request: - free_irq(ires1->start, fusb300); - -err_request_irq1: - free_irq(ires->start, fusb300); - -clean_up: - if (fusb300) { - if (fusb300->ep0_req) - fusb300_free_request(&fusb300->ep[0]->ep, - fusb300->ep0_req); - for (i = 0; i < FUSB300_MAX_NUM_EP; i++) - kfree(fusb300->ep[i]); - kfree(fusb300); - } - if (reg) - iounmap(reg); - - return ret; -} - -static struct platform_driver fusb300_driver = { - .remove_new = fusb300_remove, - .driver = { - .name = udc_name, - }, -}; - -module_platform_driver_probe(fusb300_driver, fusb300_probe); diff --git a/drivers/usb/gadget/udc/fusb300_udc.h b/drivers/usb/gadget/udc/fusb300_udc.h deleted file mode 100644 index eb3d6d379ba7..000000000000 --- a/drivers/usb/gadget/udc/fusb300_udc.h +++ /dev/null @@ -1,675 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Fusb300 UDC (USB gadget) - * - * Copyright (C) 2010 Faraday Technology Corp. - * - * Author : Yuan-hsin Chen <yhchen@faraday-tech.com> - */ - - -#ifndef __FUSB300_UDC_H__ -#define __FUSB300_UDC_H__ - -#include <linux/kernel.h> - -#define FUSB300_OFFSET_GCR 0x00 -#define FUSB300_OFFSET_GTM 0x04 -#define FUSB300_OFFSET_DAR 0x08 -#define FUSB300_OFFSET_CSR 0x0C -#define FUSB300_OFFSET_CXPORT 0x10 -#define FUSB300_OFFSET_EPSET0(n) (0x20 + (n - 1) * 0x30) -#define FUSB300_OFFSET_EPSET1(n) (0x24 + (n - 1) * 0x30) -#define FUSB300_OFFSET_EPSET2(n) (0x28 + (n - 1) * 0x30) -#define FUSB300_OFFSET_EPFFR(n) (0x2c + (n - 1) * 0x30) -#define FUSB300_OFFSET_EPSTRID(n) (0x40 + (n - 1) * 0x30) -#define FUSB300_OFFSET_HSPTM 0x300 -#define FUSB300_OFFSET_HSCR 0x304 -#define FUSB300_OFFSET_SSCR0 0x308 -#define FUSB300_OFFSET_SSCR1 0x30C -#define FUSB300_OFFSET_TT 0x310 -#define FUSB300_OFFSET_DEVNOTF 0x314 -#define FUSB300_OFFSET_DNC1 0x318 -#define FUSB300_OFFSET_CS 0x31C -#define FUSB300_OFFSET_SOF 0x324 -#define FUSB300_OFFSET_EFCS 0x328 -#define FUSB300_OFFSET_IGR0 0x400 -#define FUSB300_OFFSET_IGR1 0x404 -#define FUSB300_OFFSET_IGR2 0x408 -#define FUSB300_OFFSET_IGR3 0x40C -#define FUSB300_OFFSET_IGR4 0x410 -#define FUSB300_OFFSET_IGR5 0x414 -#define FUSB300_OFFSET_IGER0 0x420 -#define FUSB300_OFFSET_IGER1 0x424 -#define FUSB300_OFFSET_IGER2 0x428 -#define FUSB300_OFFSET_IGER3 0x42C -#define FUSB300_OFFSET_IGER4 0x430 -#define FUSB300_OFFSET_IGER5 0x434 -#define FUSB300_OFFSET_DMAHMER 0x500 -#define FUSB300_OFFSET_EPPRDRDY 0x504 -#define FUSB300_OFFSET_DMAEPMR 0x508 -#define FUSB300_OFFSET_DMAENR 0x50C -#define FUSB300_OFFSET_DMAAPR 0x510 -#define FUSB300_OFFSET_AHBCR 0x514 -#define FUSB300_OFFSET_EPPRD_W0(n) (0x520 + (n - 1) * 0x10) -#define FUSB300_OFFSET_EPPRD_W1(n) (0x524 + (n - 1) * 0x10) -#define FUSB300_OFFSET_EPPRD_W2(n) (0x528 + (n - 1) * 0x10) -#define FUSB300_OFFSET_EPRD_PTR(n) (0x52C + (n - 1) * 0x10) -#define FUSB300_OFFSET_BUFDBG_START 0x800 -#define FUSB300_OFFSET_BUFDBG_END 0xBFC -#define FUSB300_OFFSET_EPPORT(n) (0x1010 + (n - 1) * 0x10) - -/* - * * Global Control Register (offset = 000H) - * */ -#define FUSB300_GCR_SF_RST (1 << 8) -#define FUSB300_GCR_VBUS_STATUS (1 << 7) -#define FUSB300_GCR_FORCE_HS_SUSP (1 << 6) -#define FUSB300_GCR_SYNC_FIFO1_CLR (1 << 5) -#define FUSB300_GCR_SYNC_FIFO0_CLR (1 << 4) -#define FUSB300_GCR_FIFOCLR (1 << 3) -#define FUSB300_GCR_GLINTEN (1 << 2) -#define FUSB300_GCR_DEVEN_FS 0x3 -#define FUSB300_GCR_DEVEN_HS 0x2 -#define FUSB300_GCR_DEVEN_SS 0x1 -#define FUSB300_GCR_DEVDIS 0x0 -#define FUSB300_GCR_DEVEN_MSK 0x3 - - -/* - * *Global Test Mode (offset = 004H) - * */ -#define FUSB300_GTM_TST_DIS_SOFGEN (1 << 16) -#define FUSB300_GTM_TST_CUR_EP_ENTRY(n) ((n & 0xF) << 12) -#define FUSB300_GTM_TST_EP_ENTRY(n) ((n & 0xF) << 8) -#define FUSB300_GTM_TST_EP_NUM(n) ((n & 0xF) << 4) -#define FUSB300_GTM_TST_FIFO_DEG (1 << 1) -#define FUSB300_GTM_TSTMODE (1 << 0) - -/* - * * Device Address Register (offset = 008H) - * */ -#define FUSB300_DAR_SETCONFG (1 << 7) -#define FUSB300_DAR_DRVADDR(x) (x & 0x7F) -#define FUSB300_DAR_DRVADDR_MSK 0x7F - -/* - * *Control Transfer Configuration and Status Register - * (CX_Config_Status, offset = 00CH) - * */ -#define FUSB300_CSR_LEN(x) ((x & 0xFFFF) << 8) -#define FUSB300_CSR_LEN_MSK (0xFFFF << 8) -#define FUSB300_CSR_EMP (1 << 4) -#define FUSB300_CSR_FUL (1 << 3) -#define FUSB300_CSR_CLR (1 << 2) -#define FUSB300_CSR_STL (1 << 1) -#define FUSB300_CSR_DONE (1 << 0) - -/* - * * EPn Setting 0 (EPn_SET0, offset = 020H+(n-1)*30H, n=1~15 ) - * */ -#define FUSB300_EPSET0_STL_CLR (1 << 3) -#define FUSB300_EPSET0_CLRSEQNUM (1 << 2) -#define FUSB300_EPSET0_STL (1 << 0) - -/* - * * EPn Setting 1 (EPn_SET1, offset = 024H+(n-1)*30H, n=1~15) - * */ -#define FUSB300_EPSET1_START_ENTRY(x) ((x & 0xFF) << 24) -#define FUSB300_EPSET1_START_ENTRY_MSK (0xFF << 24) -#define FUSB300_EPSET1_FIFOENTRY(x) ((x & 0x1F) << 12) -#define FUSB300_EPSET1_FIFOENTRY_MSK (0x1f << 12) -#define FUSB300_EPSET1_INTERVAL(x) ((x & 0x7) << 6) -#define FUSB300_EPSET1_BWNUM(x) ((x & 0x3) << 4) -#define FUSB300_EPSET1_TYPEISO (1 << 2) -#define FUSB300_EPSET1_TYPEBLK (2 << 2) -#define FUSB300_EPSET1_TYPEINT (3 << 2) -#define FUSB300_EPSET1_TYPE(x) ((x & 0x3) << 2) -#define FUSB300_EPSET1_TYPE_MSK (0x3 << 2) -#define FUSB300_EPSET1_DIROUT (0 << 1) -#define FUSB300_EPSET1_DIRIN (1 << 1) -#define FUSB300_EPSET1_DIR(x) ((x & 0x1) << 1) -#define FUSB300_EPSET1_DIRIN (1 << 1) -#define FUSB300_EPSET1_DIR_MSK ((0x1) << 1) -#define FUSB300_EPSET1_ACTDIS 0 -#define FUSB300_EPSET1_ACTEN 1 - -/* - * *EPn Setting 2 (EPn_SET2, offset = 028H+(n-1)*30H, n=1~15) - * */ -#define FUSB300_EPSET2_ADDROFS(x) ((x & 0x7FFF) << 16) -#define FUSB300_EPSET2_ADDROFS_MSK (0x7fff << 16) -#define FUSB300_EPSET2_MPS(x) (x & 0x7FF) -#define FUSB300_EPSET2_MPS_MSK 0x7FF - -/* - * * EPn FIFO Register (offset = 2cH+(n-1)*30H) - * */ -#define FUSB300_FFR_RST (1 << 31) -#define FUSB300_FF_FUL (1 << 30) -#define FUSB300_FF_EMPTY (1 << 29) -#define FUSB300_FFR_BYCNT 0x1FFFF - -/* - * *EPn Stream ID (EPn_STR_ID, offset = 040H+(n-1)*30H, n=1~15) - * */ -#define FUSB300_STRID_STREN (1 << 16) -#define FUSB300_STRID_STRID(x) (x & 0xFFFF) - -/* - * *HS PHY Test Mode (offset = 300H) - * */ -#define FUSB300_HSPTM_TSTPKDONE (1 << 4) -#define FUSB300_HSPTM_TSTPKT (1 << 3) -#define FUSB300_HSPTM_TSTSET0NAK (1 << 2) -#define FUSB300_HSPTM_TSTKSTA (1 << 1) -#define FUSB300_HSPTM_TSTJSTA (1 << 0) - -/* - * *HS Control Register (offset = 304H) - * */ -#define FUSB300_HSCR_HS_LPM_PERMIT (1 << 8) -#define FUSB300_HSCR_HS_LPM_RMWKUP (1 << 7) -#define FUSB300_HSCR_CAP_LPM_RMWKUP (1 << 6) -#define FUSB300_HSCR_HS_GOSUSP (1 << 5) -#define FUSB300_HSCR_HS_GORMWKU (1 << 4) -#define FUSB300_HSCR_CAP_RMWKUP (1 << 3) -#define FUSB300_HSCR_IDLECNT_0MS 0 -#define FUSB300_HSCR_IDLECNT_1MS 1 -#define FUSB300_HSCR_IDLECNT_2MS 2 -#define FUSB300_HSCR_IDLECNT_3MS 3 -#define FUSB300_HSCR_IDLECNT_4MS 4 -#define FUSB300_HSCR_IDLECNT_5MS 5 -#define FUSB300_HSCR_IDLECNT_6MS 6 -#define FUSB300_HSCR_IDLECNT_7MS 7 - -/* - * * SS Controller Register 0 (offset = 308H) - * */ -#define FUSB300_SSCR0_MAX_INTERVAL(x) ((x & 0x7) << 4) -#define FUSB300_SSCR0_U2_FUN_EN (1 << 1) -#define FUSB300_SSCR0_U1_FUN_EN (1 << 0) - -/* - * * SS Controller Register 1 (offset = 30CH) - * */ -#define FUSB300_SSCR1_GO_U3_DONE (1 << 8) -#define FUSB300_SSCR1_TXDEEMPH_LEVEL (1 << 7) -#define FUSB300_SSCR1_DIS_SCRMB (1 << 6) -#define FUSB300_SSCR1_FORCE_RECOVERY (1 << 5) -#define FUSB300_SSCR1_U3_WAKEUP_EN (1 << 4) -#define FUSB300_SSCR1_U2_EXIT_EN (1 << 3) -#define FUSB300_SSCR1_U1_EXIT_EN (1 << 2) -#define FUSB300_SSCR1_U2_ENTRY_EN (1 << 1) -#define FUSB300_SSCR1_U1_ENTRY_EN (1 << 0) - -/* - * *SS Controller Register 2 (offset = 310H) - * */ -#define FUSB300_SSCR2_SS_TX_SWING (1 << 25) -#define FUSB300_SSCR2_FORCE_LINKPM_ACCEPT (1 << 24) -#define FUSB300_SSCR2_U2_INACT_TIMEOUT(x) ((x & 0xFF) << 16) -#define FUSB300_SSCR2_U1TIMEOUT(x) ((x & 0xFF) << 8) -#define FUSB300_SSCR2_U2TIMEOUT(x) (x & 0xFF) - -/* - * *SS Device Notification Control (DEV_NOTF, offset = 314H) - * */ -#define FUSB300_DEVNOTF_CONTEXT0(x) ((x & 0xFFFFFF) << 8) -#define FUSB300_DEVNOTF_TYPE_DIS 0 -#define FUSB300_DEVNOTF_TYPE_FUNCWAKE 1 -#define FUSB300_DEVNOTF_TYPE_LTM 2 -#define FUSB300_DEVNOTF_TYPE_BUSINT_ADJMSG 3 - -/* - * *BFM Arbiter Priority Register (BFM_ARB offset = 31CH) - * */ -#define FUSB300_BFMARB_ARB_M1 (1 << 3) -#define FUSB300_BFMARB_ARB_M0 (1 << 2) -#define FUSB300_BFMARB_ARB_S1 (1 << 1) -#define FUSB300_BFMARB_ARB_S0 1 - -/* - * *Vendor Specific IO Control Register (offset = 320H) - * */ -#define FUSB300_VSIC_VCTLOAD_N (1 << 8) -#define FUSB300_VSIC_VCTL(x) (x & 0x3F) - -/* - * *SOF Mask Timer (offset = 324H) - * */ -#define FUSB300_SOF_MASK_TIMER_HS 0x044c -#define FUSB300_SOF_MASK_TIMER_FS 0x2710 - -/* - * *Error Flag and Control Status (offset = 328H) - * */ -#define FUSB300_EFCS_PM_STATE_U3 3 -#define FUSB300_EFCS_PM_STATE_U2 2 -#define FUSB300_EFCS_PM_STATE_U1 1 -#define FUSB300_EFCS_PM_STATE_U0 0 - -/* - * *Interrupt Group 0 Register (offset = 400H) - * */ -#define FUSB300_IGR0_EP15_PRD_INT (1 << 31) -#define FUSB300_IGR0_EP14_PRD_INT (1 << 30) -#define FUSB300_IGR0_EP13_PRD_INT (1 << 29) -#define FUSB300_IGR0_EP12_PRD_INT (1 << 28) -#define FUSB300_IGR0_EP11_PRD_INT (1 << 27) -#define FUSB300_IGR0_EP10_PRD_INT (1 << 26) -#define FUSB300_IGR0_EP9_PRD_INT (1 << 25) -#define FUSB300_IGR0_EP8_PRD_INT (1 << 24) -#define FUSB300_IGR0_EP7_PRD_INT (1 << 23) -#define FUSB300_IGR0_EP6_PRD_INT (1 << 22) -#define FUSB300_IGR0_EP5_PRD_INT (1 << 21) -#define FUSB300_IGR0_EP4_PRD_INT (1 << 20) -#define FUSB300_IGR0_EP3_PRD_INT (1 << 19) -#define FUSB300_IGR0_EP2_PRD_INT (1 << 18) -#define FUSB300_IGR0_EP1_PRD_INT (1 << 17) -#define FUSB300_IGR0_EPn_PRD_INT(n) (1 << (n + 16)) - -#define FUSB300_IGR0_EP15_FIFO_INT (1 << 15) -#define FUSB300_IGR0_EP14_FIFO_INT (1 << 14) -#define FUSB300_IGR0_EP13_FIFO_INT (1 << 13) -#define FUSB300_IGR0_EP12_FIFO_INT (1 << 12) -#define FUSB300_IGR0_EP11_FIFO_INT (1 << 11) -#define FUSB300_IGR0_EP10_FIFO_INT (1 << 10) -#define FUSB300_IGR0_EP9_FIFO_INT (1 << 9) -#define FUSB300_IGR0_EP8_FIFO_INT (1 << 8) -#define FUSB300_IGR0_EP7_FIFO_INT (1 << 7) -#define FUSB300_IGR0_EP6_FIFO_INT (1 << 6) -#define FUSB300_IGR0_EP5_FIFO_INT (1 << 5) -#define FUSB300_IGR0_EP4_FIFO_INT (1 << 4) -#define FUSB300_IGR0_EP3_FIFO_INT (1 << 3) -#define FUSB300_IGR0_EP2_FIFO_INT (1 << 2) -#define FUSB300_IGR0_EP1_FIFO_INT (1 << 1) -#define FUSB300_IGR0_EPn_FIFO_INT(n) (1 << n) - -/* - * *Interrupt Group 1 Register (offset = 404H) - * */ -#define FUSB300_IGR1_INTGRP5 (1 << 31) -#define FUSB300_IGR1_VBUS_CHG_INT (1 << 30) -#define FUSB300_IGR1_SYNF1_EMPTY_INT (1 << 29) -#define FUSB300_IGR1_SYNF0_EMPTY_INT (1 << 28) -#define FUSB300_IGR1_U3_EXIT_FAIL_INT (1 << 27) -#define FUSB300_IGR1_U2_EXIT_FAIL_INT (1 << 26) -#define FUSB300_IGR1_U1_EXIT_FAIL_INT (1 << 25) -#define FUSB300_IGR1_U2_ENTRY_FAIL_INT (1 << 24) -#define FUSB300_IGR1_U1_ENTRY_FAIL_INT (1 << 23) -#define FUSB300_IGR1_U3_EXIT_INT (1 << 22) -#define FUSB300_IGR1_U2_EXIT_INT (1 << 21) -#define FUSB300_IGR1_U1_EXIT_INT (1 << 20) -#define FUSB300_IGR1_U3_ENTRY_INT (1 << 19) -#define FUSB300_IGR1_U2_ENTRY_INT (1 << 18) -#define FUSB300_IGR1_U1_ENTRY_INT (1 << 17) -#define FUSB300_IGR1_HOT_RST_INT (1 << 16) -#define FUSB300_IGR1_WARM_RST_INT (1 << 15) -#define FUSB300_IGR1_RESM_INT (1 << 14) -#define FUSB300_IGR1_SUSP_INT (1 << 13) -#define FUSB300_IGR1_HS_LPM_INT (1 << 12) -#define FUSB300_IGR1_USBRST_INT (1 << 11) -#define FUSB300_IGR1_DEV_MODE_CHG_INT (1 << 9) -#define FUSB300_IGR1_CX_COMABT_INT (1 << 8) -#define FUSB300_IGR1_CX_COMFAIL_INT (1 << 7) -#define FUSB300_IGR1_CX_CMDEND_INT (1 << 6) -#define FUSB300_IGR1_CX_OUT_INT (1 << 5) -#define FUSB300_IGR1_CX_IN_INT (1 << 4) -#define FUSB300_IGR1_CX_SETUP_INT (1 << 3) -#define FUSB300_IGR1_INTGRP4 (1 << 2) -#define FUSB300_IGR1_INTGRP3 (1 << 1) -#define FUSB300_IGR1_INTGRP2 (1 << 0) - -/* - * *Interrupt Group 2 Register (offset = 408H) - * */ -#define FUSB300_IGR2_EP6_STR_ACCEPT_INT (1 << 29) -#define FUSB300_IGR2_EP6_STR_RESUME_INT (1 << 28) -#define FUSB300_IGR2_EP6_STR_REQ_INT (1 << 27) -#define FUSB300_IGR2_EP6_STR_NOTRDY_INT (1 << 26) -#define FUSB300_IGR2_EP6_STR_PRIME_INT (1 << 25) -#define FUSB300_IGR2_EP5_STR_ACCEPT_INT (1 << 24) -#define FUSB300_IGR2_EP5_STR_RESUME_INT (1 << 23) -#define FUSB300_IGR2_EP5_STR_REQ_INT (1 << 22) -#define FUSB300_IGR2_EP5_STR_NOTRDY_INT (1 << 21) -#define FUSB300_IGR2_EP5_STR_PRIME_INT (1 << 20) -#define FUSB300_IGR2_EP4_STR_ACCEPT_INT (1 << 19) -#define FUSB300_IGR2_EP4_STR_RESUME_INT (1 << 18) -#define FUSB300_IGR2_EP4_STR_REQ_INT (1 << 17) -#define FUSB300_IGR2_EP4_STR_NOTRDY_INT (1 << 16) -#define FUSB300_IGR2_EP4_STR_PRIME_INT (1 << 15) -#define FUSB300_IGR2_EP3_STR_ACCEPT_INT (1 << 14) -#define FUSB300_IGR2_EP3_STR_RESUME_INT (1 << 13) -#define FUSB300_IGR2_EP3_STR_REQ_INT (1 << 12) -#define FUSB300_IGR2_EP3_STR_NOTRDY_INT (1 << 11) -#define FUSB300_IGR2_EP3_STR_PRIME_INT (1 << 10) -#define FUSB300_IGR2_EP2_STR_ACCEPT_INT (1 << 9) -#define FUSB300_IGR2_EP2_STR_RESUME_INT (1 << 8) -#define FUSB300_IGR2_EP2_STR_REQ_INT (1 << 7) -#define FUSB300_IGR2_EP2_STR_NOTRDY_INT (1 << 6) -#define FUSB300_IGR2_EP2_STR_PRIME_INT (1 << 5) -#define FUSB300_IGR2_EP1_STR_ACCEPT_INT (1 << 4) -#define FUSB300_IGR2_EP1_STR_RESUME_INT (1 << 3) -#define FUSB300_IGR2_EP1_STR_REQ_INT (1 << 2) -#define FUSB300_IGR2_EP1_STR_NOTRDY_INT (1 << 1) -#define FUSB300_IGR2_EP1_STR_PRIME_INT (1 << 0) - -#define FUSB300_IGR2_EP_STR_ACCEPT_INT(n) (1 << (5 * n - 1)) -#define FUSB300_IGR2_EP_STR_RESUME_INT(n) (1 << (5 * n - 2)) -#define FUSB300_IGR2_EP_STR_REQ_INT(n) (1 << (5 * n - 3)) -#define FUSB300_IGR2_EP_STR_NOTRDY_INT(n) (1 << (5 * n - 4)) -#define FUSB300_IGR2_EP_STR_PRIME_INT(n) (1 << (5 * n - 5)) - -/* - * *Interrupt Group 3 Register (offset = 40CH) - * */ -#define FUSB300_IGR3_EP12_STR_ACCEPT_INT (1 << 29) -#define FUSB300_IGR3_EP12_STR_RESUME_INT (1 << 28) -#define FUSB300_IGR3_EP12_STR_REQ_INT (1 << 27) -#define FUSB300_IGR3_EP12_STR_NOTRDY_INT (1 << 26) -#define FUSB300_IGR3_EP12_STR_PRIME_INT (1 << 25) -#define FUSB300_IGR3_EP11_STR_ACCEPT_INT (1 << 24) -#define FUSB300_IGR3_EP11_STR_RESUME_INT (1 << 23) -#define FUSB300_IGR3_EP11_STR_REQ_INT (1 << 22) -#define FUSB300_IGR3_EP11_STR_NOTRDY_INT (1 << 21) -#define FUSB300_IGR3_EP11_STR_PRIME_INT (1 << 20) -#define FUSB300_IGR3_EP10_STR_ACCEPT_INT (1 << 19) -#define FUSB300_IGR3_EP10_STR_RESUME_INT (1 << 18) -#define FUSB300_IGR3_EP10_STR_REQ_INT (1 << 17) -#define FUSB300_IGR3_EP10_STR_NOTRDY_INT (1 << 16) -#define FUSB300_IGR3_EP10_STR_PRIME_INT (1 << 15) -#define FUSB300_IGR3_EP9_STR_ACCEPT_INT (1 << 14) -#define FUSB300_IGR3_EP9_STR_RESUME_INT (1 << 13) -#define FUSB300_IGR3_EP9_STR_REQ_INT (1 << 12) -#define FUSB300_IGR3_EP9_STR_NOTRDY_INT (1 << 11) -#define FUSB300_IGR3_EP9_STR_PRIME_INT (1 << 10) -#define FUSB300_IGR3_EP8_STR_ACCEPT_INT (1 << 9) -#define FUSB300_IGR3_EP8_STR_RESUME_INT (1 << 8) -#define FUSB300_IGR3_EP8_STR_REQ_INT (1 << 7) -#define FUSB300_IGR3_EP8_STR_NOTRDY_INT (1 << 6) -#define FUSB300_IGR3_EP8_STR_PRIME_INT (1 << 5) -#define FUSB300_IGR3_EP7_STR_ACCEPT_INT (1 << 4) -#define FUSB300_IGR3_EP7_STR_RESUME_INT (1 << 3) -#define FUSB300_IGR3_EP7_STR_REQ_INT (1 << 2) -#define FUSB300_IGR3_EP7_STR_NOTRDY_INT (1 << 1) -#define FUSB300_IGR3_EP7_STR_PRIME_INT (1 << 0) - -#define FUSB300_IGR3_EP_STR_ACCEPT_INT(n) (1 << (5 * (n - 6) - 1)) -#define FUSB300_IGR3_EP_STR_RESUME_INT(n) (1 << (5 * (n - 6) - 2)) -#define FUSB300_IGR3_EP_STR_REQ_INT(n) (1 << (5 * (n - 6) - 3)) -#define FUSB300_IGR3_EP_STR_NOTRDY_INT(n) (1 << (5 * (n - 6) - 4)) -#define FUSB300_IGR3_EP_STR_PRIME_INT(n) (1 << (5 * (n - 6) - 5)) - -/* - * *Interrupt Group 4 Register (offset = 410H) - * */ -#define FUSB300_IGR4_EP15_RX0_INT (1 << 31) -#define FUSB300_IGR4_EP14_RX0_INT (1 << 30) -#define FUSB300_IGR4_EP13_RX0_INT (1 << 29) -#define FUSB300_IGR4_EP12_RX0_INT (1 << 28) -#define FUSB300_IGR4_EP11_RX0_INT (1 << 27) -#define FUSB300_IGR4_EP10_RX0_INT (1 << 26) -#define FUSB300_IGR4_EP9_RX0_INT (1 << 25) -#define FUSB300_IGR4_EP8_RX0_INT (1 << 24) -#define FUSB300_IGR4_EP7_RX0_INT (1 << 23) -#define FUSB300_IGR4_EP6_RX0_INT (1 << 22) -#define FUSB300_IGR4_EP5_RX0_INT (1 << 21) -#define FUSB300_IGR4_EP4_RX0_INT (1 << 20) -#define FUSB300_IGR4_EP3_RX0_INT (1 << 19) -#define FUSB300_IGR4_EP2_RX0_INT (1 << 18) -#define FUSB300_IGR4_EP1_RX0_INT (1 << 17) -#define FUSB300_IGR4_EP_RX0_INT(x) (1 << (x + 16)) -#define FUSB300_IGR4_EP15_STR_ACCEPT_INT (1 << 14) -#define FUSB300_IGR4_EP15_STR_RESUME_INT (1 << 13) -#define FUSB300_IGR4_EP15_STR_REQ_INT (1 << 12) -#define FUSB300_IGR4_EP15_STR_NOTRDY_INT (1 << 11) -#define FUSB300_IGR4_EP15_STR_PRIME_INT (1 << 10) -#define FUSB300_IGR4_EP14_STR_ACCEPT_INT (1 << 9) -#define FUSB300_IGR4_EP14_STR_RESUME_INT (1 << 8) -#define FUSB300_IGR4_EP14_STR_REQ_INT (1 << 7) -#define FUSB300_IGR4_EP14_STR_NOTRDY_INT (1 << 6) -#define FUSB300_IGR4_EP14_STR_PRIME_INT (1 << 5) -#define FUSB300_IGR4_EP13_STR_ACCEPT_INT (1 << 4) -#define FUSB300_IGR4_EP13_STR_RESUME_INT (1 << 3) -#define FUSB300_IGR4_EP13_STR_REQ_INT (1 << 2) -#define FUSB300_IGR4_EP13_STR_NOTRDY_INT (1 << 1) -#define FUSB300_IGR4_EP13_STR_PRIME_INT (1 << 0) - -#define FUSB300_IGR4_EP_STR_ACCEPT_INT(n) (1 << (5 * (n - 12) - 1)) -#define FUSB300_IGR4_EP_STR_RESUME_INT(n) (1 << (5 * (n - 12) - 2)) -#define FUSB300_IGR4_EP_STR_REQ_INT(n) (1 << (5 * (n - 12) - 3)) -#define FUSB300_IGR4_EP_STR_NOTRDY_INT(n) (1 << (5 * (n - 12) - 4)) -#define FUSB300_IGR4_EP_STR_PRIME_INT(n) (1 << (5 * (n - 12) - 5)) - -/* - * *Interrupt Group 5 Register (offset = 414H) - * */ -#define FUSB300_IGR5_EP_STL_INT(n) (1 << n) - -/* - * *Interrupt Enable Group 0 Register (offset = 420H) - * */ -#define FUSB300_IGER0_EEP15_PRD_INT (1 << 31) -#define FUSB300_IGER0_EEP14_PRD_INT (1 << 30) -#define FUSB300_IGER0_EEP13_PRD_INT (1 << 29) -#define FUSB300_IGER0_EEP12_PRD_INT (1 << 28) -#define FUSB300_IGER0_EEP11_PRD_INT (1 << 27) -#define FUSB300_IGER0_EEP10_PRD_INT (1 << 26) -#define FUSB300_IGER0_EEP9_PRD_INT (1 << 25) -#define FUSB300_IGER0_EP8_PRD_INT (1 << 24) -#define FUSB300_IGER0_EEP7_PRD_INT (1 << 23) -#define FUSB300_IGER0_EEP6_PRD_INT (1 << 22) -#define FUSB300_IGER0_EEP5_PRD_INT (1 << 21) -#define FUSB300_IGER0_EEP4_PRD_INT (1 << 20) -#define FUSB300_IGER0_EEP3_PRD_INT (1 << 19) -#define FUSB300_IGER0_EEP2_PRD_INT (1 << 18) -#define FUSB300_IGER0_EEP1_PRD_INT (1 << 17) -#define FUSB300_IGER0_EEPn_PRD_INT(n) (1 << (n + 16)) - -#define FUSB300_IGER0_EEP15_FIFO_INT (1 << 15) -#define FUSB300_IGER0_EEP14_FIFO_INT (1 << 14) -#define FUSB300_IGER0_EEP13_FIFO_INT (1 << 13) -#define FUSB300_IGER0_EEP12_FIFO_INT (1 << 12) -#define FUSB300_IGER0_EEP11_FIFO_INT (1 << 11) -#define FUSB300_IGER0_EEP10_FIFO_INT (1 << 10) -#define FUSB300_IGER0_EEP9_FIFO_INT (1 << 9) -#define FUSB300_IGER0_EEP8_FIFO_INT (1 << 8) -#define FUSB300_IGER0_EEP7_FIFO_INT (1 << 7) -#define FUSB300_IGER0_EEP6_FIFO_INT (1 << 6) -#define FUSB300_IGER0_EEP5_FIFO_INT (1 << 5) -#define FUSB300_IGER0_EEP4_FIFO_INT (1 << 4) -#define FUSB300_IGER0_EEP3_FIFO_INT (1 << 3) -#define FUSB300_IGER0_EEP2_FIFO_INT (1 << 2) -#define FUSB300_IGER0_EEP1_FIFO_INT (1 << 1) -#define FUSB300_IGER0_EEPn_FIFO_INT(n) (1 << n) - -/* - * *Interrupt Enable Group 1 Register (offset = 424H) - * */ -#define FUSB300_IGER1_EINT_GRP5 (1 << 31) -#define FUSB300_IGER1_VBUS_CHG_INT (1 << 30) -#define FUSB300_IGER1_SYNF1_EMPTY_INT (1 << 29) -#define FUSB300_IGER1_SYNF0_EMPTY_INT (1 << 28) -#define FUSB300_IGER1_U3_EXIT_FAIL_INT (1 << 27) -#define FUSB300_IGER1_U2_EXIT_FAIL_INT (1 << 26) -#define FUSB300_IGER1_U1_EXIT_FAIL_INT (1 << 25) -#define FUSB300_IGER1_U2_ENTRY_FAIL_INT (1 << 24) -#define FUSB300_IGER1_U1_ENTRY_FAIL_INT (1 << 23) -#define FUSB300_IGER1_U3_EXIT_INT (1 << 22) -#define FUSB300_IGER1_U2_EXIT_INT (1 << 21) -#define FUSB300_IGER1_U1_EXIT_INT (1 << 20) -#define FUSB300_IGER1_U3_ENTRY_INT (1 << 19) -#define FUSB300_IGER1_U2_ENTRY_INT (1 << 18) -#define FUSB300_IGER1_U1_ENTRY_INT (1 << 17) -#define FUSB300_IGER1_HOT_RST_INT (1 << 16) -#define FUSB300_IGER1_WARM_RST_INT (1 << 15) -#define FUSB300_IGER1_RESM_INT (1 << 14) -#define FUSB300_IGER1_SUSP_INT (1 << 13) -#define FUSB300_IGER1_LPM_INT (1 << 12) -#define FUSB300_IGER1_HS_RST_INT (1 << 11) -#define FUSB300_IGER1_EDEV_MODE_CHG_INT (1 << 9) -#define FUSB300_IGER1_CX_COMABT_INT (1 << 8) -#define FUSB300_IGER1_CX_COMFAIL_INT (1 << 7) -#define FUSB300_IGER1_CX_CMDEND_INT (1 << 6) -#define FUSB300_IGER1_CX_OUT_INT (1 << 5) -#define FUSB300_IGER1_CX_IN_INT (1 << 4) -#define FUSB300_IGER1_CX_SETUP_INT (1 << 3) -#define FUSB300_IGER1_INTGRP4 (1 << 2) -#define FUSB300_IGER1_INTGRP3 (1 << 1) -#define FUSB300_IGER1_INTGRP2 (1 << 0) - -/* - * *Interrupt Enable Group 2 Register (offset = 428H) - * */ -#define FUSB300_IGER2_EEP_STR_ACCEPT_INT(n) (1 << (5 * n - 1)) -#define FUSB300_IGER2_EEP_STR_RESUME_INT(n) (1 << (5 * n - 2)) -#define FUSB300_IGER2_EEP_STR_REQ_INT(n) (1 << (5 * n - 3)) -#define FUSB300_IGER2_EEP_STR_NOTRDY_INT(n) (1 << (5 * n - 4)) -#define FUSB300_IGER2_EEP_STR_PRIME_INT(n) (1 << (5 * n - 5)) - -/* - * *Interrupt Enable Group 3 Register (offset = 42CH) - * */ - -#define FUSB300_IGER3_EEP_STR_ACCEPT_INT(n) (1 << (5 * (n - 6) - 1)) -#define FUSB300_IGER3_EEP_STR_RESUME_INT(n) (1 << (5 * (n - 6) - 2)) -#define FUSB300_IGER3_EEP_STR_REQ_INT(n) (1 << (5 * (n - 6) - 3)) -#define FUSB300_IGER3_EEP_STR_NOTRDY_INT(n) (1 << (5 * (n - 6) - 4)) -#define FUSB300_IGER3_EEP_STR_PRIME_INT(n) (1 << (5 * (n - 6) - 5)) - -/* - * *Interrupt Enable Group 4 Register (offset = 430H) - * */ - -#define FUSB300_IGER4_EEP_RX0_INT(n) (1 << (n + 16)) -#define FUSB300_IGER4_EEP_STR_ACCEPT_INT(n) (1 << (5 * (n - 6) - 1)) -#define FUSB300_IGER4_EEP_STR_RESUME_INT(n) (1 << (5 * (n - 6) - 2)) -#define FUSB300_IGER4_EEP_STR_REQ_INT(n) (1 << (5 * (n - 6) - 3)) -#define FUSB300_IGER4_EEP_STR_NOTRDY_INT(n) (1 << (5 * (n - 6) - 4)) -#define FUSB300_IGER4_EEP_STR_PRIME_INT(n) (1 << (5 * (n - 6) - 5)) - -/* EP PRD Ready (EP_PRD_RDY, offset = 504H) */ - -#define FUSB300_EPPRDR_EP15_PRD_RDY (1 << 15) -#define FUSB300_EPPRDR_EP14_PRD_RDY (1 << 14) -#define FUSB300_EPPRDR_EP13_PRD_RDY (1 << 13) -#define FUSB300_EPPRDR_EP12_PRD_RDY (1 << 12) -#define FUSB300_EPPRDR_EP11_PRD_RDY (1 << 11) -#define FUSB300_EPPRDR_EP10_PRD_RDY (1 << 10) -#define FUSB300_EPPRDR_EP9_PRD_RDY (1 << 9) -#define FUSB300_EPPRDR_EP8_PRD_RDY (1 << 8) -#define FUSB300_EPPRDR_EP7_PRD_RDY (1 << 7) -#define FUSB300_EPPRDR_EP6_PRD_RDY (1 << 6) -#define FUSB300_EPPRDR_EP5_PRD_RDY (1 << 5) -#define FUSB300_EPPRDR_EP4_PRD_RDY (1 << 4) -#define FUSB300_EPPRDR_EP3_PRD_RDY (1 << 3) -#define FUSB300_EPPRDR_EP2_PRD_RDY (1 << 2) -#define FUSB300_EPPRDR_EP1_PRD_RDY (1 << 1) -#define FUSB300_EPPRDR_EP_PRD_RDY(n) (1 << n) - -/* AHB Bus Control Register (offset = 514H) */ -#define FUSB300_AHBBCR_S1_SPLIT_ON (1 << 17) -#define FUSB300_AHBBCR_S0_SPLIT_ON (1 << 16) -#define FUSB300_AHBBCR_S1_1entry (0 << 12) -#define FUSB300_AHBBCR_S1_4entry (3 << 12) -#define FUSB300_AHBBCR_S1_8entry (5 << 12) -#define FUSB300_AHBBCR_S1_16entry (7 << 12) -#define FUSB300_AHBBCR_S0_1entry (0 << 8) -#define FUSB300_AHBBCR_S0_4entry (3 << 8) -#define FUSB300_AHBBCR_S0_8entry (5 << 8) -#define FUSB300_AHBBCR_S0_16entry (7 << 8) -#define FUSB300_AHBBCR_M1_BURST_SINGLE (0 << 4) -#define FUSB300_AHBBCR_M1_BURST_INCR (1 << 4) -#define FUSB300_AHBBCR_M1_BURST_INCR4 (3 << 4) -#define FUSB300_AHBBCR_M1_BURST_INCR8 (5 << 4) -#define FUSB300_AHBBCR_M1_BURST_INCR16 (7 << 4) -#define FUSB300_AHBBCR_M0_BURST_SINGLE 0 -#define FUSB300_AHBBCR_M0_BURST_INCR 1 -#define FUSB300_AHBBCR_M0_BURST_INCR4 3 -#define FUSB300_AHBBCR_M0_BURST_INCR8 5 -#define FUSB300_AHBBCR_M0_BURST_INCR16 7 -#define FUSB300_IGER5_EEP_STL_INT(n) (1 << n) - -/* WORD 0 Data Structure of PRD Table */ -#define FUSB300_EPPRD0_M (1 << 30) -#define FUSB300_EPPRD0_O (1 << 29) -/* The finished prd */ -#define FUSB300_EPPRD0_F (1 << 28) -#define FUSB300_EPPRD0_I (1 << 27) -#define FUSB300_EPPRD0_A (1 << 26) -/* To decide HW point to first prd at next time */ -#define FUSB300_EPPRD0_L (1 << 25) -#define FUSB300_EPPRD0_H (1 << 24) -#define FUSB300_EPPRD0_BTC(n) (n & 0xFFFFFF) - -/*----------------------------------------------------------------------*/ -#define FUSB300_MAX_NUM_EP 16 - -#define FUSB300_FIFO_ENTRY_NUM 8 -#define FUSB300_MAX_FIFO_ENTRY 8 - -#define SS_CTL_MAX_PACKET_SIZE 0x200 -#define SS_BULK_MAX_PACKET_SIZE 0x400 -#define SS_INT_MAX_PACKET_SIZE 0x400 -#define SS_ISO_MAX_PACKET_SIZE 0x400 - -#define HS_BULK_MAX_PACKET_SIZE 0x200 -#define HS_CTL_MAX_PACKET_SIZE 0x40 -#define HS_INT_MAX_PACKET_SIZE 0x400 -#define HS_ISO_MAX_PACKET_SIZE 0x400 - -struct fusb300_ep_info { - u8 epnum; - u8 type; - u8 interval; - u8 dir_in; - u16 maxpacket; - u16 addrofs; - u16 bw_num; -}; - -struct fusb300_request { - - struct usb_request req; - struct list_head queue; -}; - - -struct fusb300_ep { - struct usb_ep ep; - struct fusb300 *fusb300; - - struct list_head queue; - unsigned stall:1; - unsigned wedged:1; - unsigned use_dma:1; - - unsigned char epnum; - unsigned char type; -}; - -struct fusb300 { - spinlock_t lock; - void __iomem *reg; - - unsigned long irq_trigger; - - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - - struct fusb300_ep *ep[FUSB300_MAX_NUM_EP]; - - struct usb_request *ep0_req; /* for internal request */ - __le16 ep0_data; - u32 ep0_length; /* for internal request */ - u8 ep0_dir; /* 0/0x80 out/in */ - - u8 fifo_entry_num; /* next start fifo entry */ - u32 addrofs; /* next fifo address offset */ - u8 reenum; /* if re-enumeration */ -}; - -#define to_fusb300(g) (container_of((g), struct fusb300, gadget)) - -#endif diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c index 5ffb3d5c635b..b860c2e76449 100644 --- a/drivers/usb/gadget/udc/goku_udc.c +++ b/drivers/usb/gadget/udc/goku_udc.c @@ -40,7 +40,7 @@ #include <asm/byteorder.h> #include <asm/io.h> #include <asm/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "goku_udc.h" diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c index 09762559912d..bf5b3c964c18 100644 --- a/drivers/usb/gadget/udc/gr_udc.c +++ b/drivers/usb/gadget/udc/gr_udc.c @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/errno.h> @@ -36,9 +37,7 @@ #include <linux/dmapool.h> #include <linux/debugfs.h> #include <linux/seq_file.h> -#include <linux/of_platform.h> -#include <linux/of_irq.h> -#include <linux/of_address.h> +#include <linux/of.h> #include <asm/byteorder.h> @@ -2090,15 +2089,18 @@ static void gr_ep_remove(struct gr_udc *dev, int num, int is_in) ep->tailbuf, ep->tailbuf_paddr); } -static int gr_remove(struct platform_device *pdev) +static void gr_remove(struct platform_device *pdev) { struct gr_udc *dev = platform_get_drvdata(pdev); int i; if (dev->added) usb_del_gadget_udc(&dev->gadget); /* Shuts everything down */ - if (dev->driver) - return -EBUSY; + if (dev->driver) { + dev_err(&pdev->dev, + "Driver still in use but removing anyhow\n"); + return; + } gr_dfs_delete(dev); dma_pool_destroy(dev->desc_pool); @@ -2111,8 +2113,6 @@ static int gr_remove(struct platform_device *pdev) gr_ep_remove(dev, i, 0); for (i = 0; i < dev->nepi; i++) gr_ep_remove(dev, i, 1); - - return 0; } static int gr_request_irq(struct gr_udc *dev, int irq) { @@ -2137,15 +2137,15 @@ static int gr_probe(struct platform_device *pdev) return PTR_ERR(regs); dev->irq = platform_get_irq(pdev, 0); - if (dev->irq <= 0) - return -ENODEV; + if (dev->irq < 0) + return dev->irq; /* Some core configurations has separate irqs for IN and OUT events */ dev->irqi = platform_get_irq(pdev, 1); if (dev->irqi > 0) { dev->irqo = platform_get_irq(pdev, 2); - if (dev->irqo <= 0) - return -ENODEV; + if (dev->irqo < 0) + return dev->irqo; } else { dev->irqi = 0; } diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index fe62db32dd0e..1a7d3c4f652f 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -1487,31 +1487,29 @@ static int udc_ep0_out_req(struct lpc32xx_udc *udc) req = list_entry(ep0->queue.next, struct lpc32xx_request, queue); - if (req) { - if (req->req.length == 0) { - /* Just dequeue request */ - done(ep0, req, 0); - udc->ep0state = WAIT_FOR_SETUP; - return 1; - } + if (req->req.length == 0) { + /* Just dequeue request */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; + } - /* Get data from FIFO */ - bufferspace = req->req.length - req->req.actual; - if (bufferspace > ep0->ep.maxpacket) - bufferspace = ep0->ep.maxpacket; + /* Get data from FIFO */ + bufferspace = req->req.length - req->req.actual; + if (bufferspace > ep0->ep.maxpacket) + bufferspace = ep0->ep.maxpacket; - /* Copy data to buffer */ - prefetchw(req->req.buf + req->req.actual); - tr = udc_read_hwep(udc, EP_OUT, req->req.buf + req->req.actual, - bufferspace); - req->req.actual += bufferspace; + /* Copy data to buffer */ + prefetchw(req->req.buf + req->req.actual); + tr = udc_read_hwep(udc, EP_OUT, req->req.buf + req->req.actual, + bufferspace); + req->req.actual += bufferspace; - if (tr < ep0->ep.maxpacket) { - /* This is the last packet */ - done(ep0, req, 0); - udc->ep0state = WAIT_FOR_SETUP; - return 1; - } + if (tr < ep0->ep.maxpacket) { + /* This is the last packet */ + done(ep0, req, 0); + udc->ep0state = WAIT_FOR_SETUP; + return 1; } return 0; @@ -1631,7 +1629,7 @@ static int lpc32xx_ep_enable(struct usb_ep *_ep, return -ESHUTDOWN; } - tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + tmp = usb_endpoint_type(desc); switch (tmp) { case USB_ENDPOINT_XFER_CONTROL: return -EINVAL; @@ -1962,18 +1960,17 @@ static void udc_handle_eps(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) /* If there isn't a request waiting, something went wrong */ req = list_entry(ep->queue.next, struct lpc32xx_request, queue); - if (req) { - done(ep, req, 0); - /* Start another request if ready */ - if (!list_empty(&ep->queue)) { - if (ep->is_in) - udc_ep_in_req_dma(udc, ep); - else - udc_ep_out_req_dma(udc, ep); - } else - ep->req_pending = 0; - } + done(ep, req, 0); + + /* Start another request if ready */ + if (!list_empty(&ep->queue)) { + if (ep->is_in) + udc_ep_in_req_dma(udc, ep); + else + udc_ep_out_req_dma(udc, ep); + } else + ep->req_pending = 0; } @@ -1989,10 +1986,6 @@ static void udc_handle_dma_ep(struct lpc32xx_udc *udc, struct lpc32xx_ep *ep) #endif req = list_entry(ep->queue.next, struct lpc32xx_request, queue); - if (!req) { - ep_err(ep, "DMA interrupt on no req!\n"); - return; - } dd = req->dd_desc_ptr; /* DMA descriptor should always be retired for this call */ @@ -3174,13 +3167,16 @@ i2c_fail: return retval; } -static int lpc32xx_udc_remove(struct platform_device *pdev) +static void lpc32xx_udc_remove(struct platform_device *pdev) { struct lpc32xx_udc *udc = platform_get_drvdata(pdev); usb_del_gadget_udc(&udc->gadget); - if (udc->driver) - return -EBUSY; + if (udc->driver) { + dev_err(&pdev->dev, + "Driver still in use but removing anyhow\n"); + return; + } udc_clk_set(udc, 1); udc_disable(udc); @@ -3194,8 +3190,6 @@ static int lpc32xx_udc_remove(struct platform_device *pdev) udc->udca_v_base, udc->udca_p_base); clk_disable_unprepare(udc->usb_slv_clk); - - return 0; } #ifdef CONFIG_PM @@ -3254,6 +3248,7 @@ MODULE_DEVICE_TABLE(of, lpc32xx_udc_of_match); #endif static struct platform_driver lpc32xx_udc_driver = { + .probe = lpc32xx_udc_probe, .remove = lpc32xx_udc_remove, .shutdown = lpc32xx_udc_shutdown, .suspend = lpc32xx_udc_suspend, @@ -3264,7 +3259,7 @@ static struct platform_driver lpc32xx_udc_driver = { }, }; -module_platform_driver_probe(lpc32xx_udc_driver, lpc32xx_udc_probe); +module_platform_driver(lpc32xx_udc_driver); MODULE_DESCRIPTION("LPC32XX udc driver"); MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>"); diff --git a/drivers/usb/gadget/udc/m66592-udc.c b/drivers/usb/gadget/udc/m66592-udc.c index e05f45a4b56b..54885175b8a4 100644 --- a/drivers/usb/gadget/udc/m66592-udc.c +++ b/drivers/usb/gadget/udc/m66592-udc.c @@ -359,7 +359,7 @@ static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep, ep->pipenum = pipenum; ep->ep.maxpacket = usb_endpoint_maxp(desc); m66592->pipenum2ep[pipenum] = ep; - m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep; + m66592->epaddr2ep[usb_endpoint_num(desc)] = ep; INIT_LIST_HEAD(&ep->queue); } @@ -391,7 +391,7 @@ static int alloc_pipe_config(struct m66592_ep *ep, BUG_ON(ep->pipenum); - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { + switch (usb_endpoint_type(desc)) { case USB_ENDPOINT_XFER_BULK: if (m66592->bulk >= M66592_MAX_NUM_BULK) { if (m66592->isochronous >= M66592_MAX_NUM_ISOC) { @@ -433,7 +433,7 @@ static int alloc_pipe_config(struct m66592_ep *ep, } ep->type = info.type; - info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; + info.epnum = usb_endpoint_num(desc); info.maxpacket = usb_endpoint_maxp(desc); info.interval = desc->bInterval; if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) @@ -1261,7 +1261,7 @@ static irqreturn_t m66592_irq(int irq, void *_m66592) static void m66592_timer(struct timer_list *t) { - struct m66592 *m66592 = from_timer(m66592, t, timer); + struct m66592 *m66592 = timer_container_of(m66592, t, timer); unsigned long flags; u16 tmp; @@ -1687,10 +1687,11 @@ clean_up: /*-------------------------------------------------------------------------*/ static struct platform_driver m66592_driver = { - .remove_new = m66592_remove, + .probe = m66592_probe, + .remove = m66592_remove, .driver = { .name = udc_name, }, }; -module_platform_driver_probe(m66592_driver, m66592_probe); +module_platform_driver(m66592_driver); diff --git a/drivers/usb/gadget/udc/max3420_udc.c b/drivers/usb/gadget/udc/max3420_udc.c index 12c519f32bf7..7349ea774adf 100644 --- a/drivers/usb/gadget/udc/max3420_udc.c +++ b/drivers/usb/gadget/udc/max3420_udc.c @@ -19,9 +19,7 @@ #include <linux/io.h> #include <linux/module.h> #include <linux/bitfield.h> -#include <linux/of_address.h> -#include <linux/of_device.h> -#include <linux/of_platform.h> +#include <linux/of.h> #include <linux/of_irq.h> #include <linux/prefetch.h> #include <linux/usb/ch9.h> @@ -1203,7 +1201,7 @@ static int max3420_probe(struct spi_device *spi) int err, irq; u8 reg[8]; - if (spi->master->flags & SPI_MASTER_HALF_DUPLEX) { + if (spi->controller->flags & SPI_CONTROLLER_HALF_DUPLEX) { dev_err(&spi->dev, "UDC needs full duplex to work\n"); return -EINVAL; } diff --git a/drivers/usb/gadget/udc/mv_u3d.h b/drivers/usb/gadget/udc/mv_u3d.h deleted file mode 100644 index 66b84f792f64..000000000000 --- a/drivers/usb/gadget/udc/mv_u3d.h +++ /dev/null @@ -1,317 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - */ - -#ifndef __MV_U3D_H -#define __MV_U3D_H - -#define MV_U3D_EP_CONTEXT_ALIGNMENT 32 -#define MV_U3D_TRB_ALIGNMENT 16 -#define MV_U3D_DMA_BOUNDARY 4096 -#define MV_U3D_EP0_MAX_PKT_SIZE 512 - -/* ep0 transfer state */ -#define MV_U3D_WAIT_FOR_SETUP 0 -#define MV_U3D_DATA_STATE_XMIT 1 -#define MV_U3D_DATA_STATE_NEED_ZLP 2 -#define MV_U3D_WAIT_FOR_OUT_STATUS 3 -#define MV_U3D_DATA_STATE_RECV 4 -#define MV_U3D_STATUS_STAGE 5 - -#define MV_U3D_EP_MAX_LENGTH_TRANSFER 0x10000 - -/* USB3 Interrupt Status */ -#define MV_U3D_USBINT_SETUP 0x00000001 -#define MV_U3D_USBINT_RX_COMPLETE 0x00000002 -#define MV_U3D_USBINT_TX_COMPLETE 0x00000004 -#define MV_U3D_USBINT_UNDER_RUN 0x00000008 -#define MV_U3D_USBINT_RXDESC_ERR 0x00000010 -#define MV_U3D_USBINT_TXDESC_ERR 0x00000020 -#define MV_U3D_USBINT_RX_TRB_COMPLETE 0x00000040 -#define MV_U3D_USBINT_TX_TRB_COMPLETE 0x00000080 -#define MV_U3D_USBINT_VBUS_VALID 0x00010000 -#define MV_U3D_USBINT_STORAGE_CMD_FULL 0x00020000 -#define MV_U3D_USBINT_LINK_CHG 0x01000000 - -/* USB3 Interrupt Enable */ -#define MV_U3D_INTR_ENABLE_SETUP 0x00000001 -#define MV_U3D_INTR_ENABLE_RX_COMPLETE 0x00000002 -#define MV_U3D_INTR_ENABLE_TX_COMPLETE 0x00000004 -#define MV_U3D_INTR_ENABLE_UNDER_RUN 0x00000008 -#define MV_U3D_INTR_ENABLE_RXDESC_ERR 0x00000010 -#define MV_U3D_INTR_ENABLE_TXDESC_ERR 0x00000020 -#define MV_U3D_INTR_ENABLE_RX_TRB_COMPLETE 0x00000040 -#define MV_U3D_INTR_ENABLE_TX_TRB_COMPLETE 0x00000080 -#define MV_U3D_INTR_ENABLE_RX_BUFFER_ERR 0x00000100 -#define MV_U3D_INTR_ENABLE_VBUS_VALID 0x00010000 -#define MV_U3D_INTR_ENABLE_STORAGE_CMD_FULL 0x00020000 -#define MV_U3D_INTR_ENABLE_LINK_CHG 0x01000000 -#define MV_U3D_INTR_ENABLE_PRIME_STATUS 0x02000000 - -/* USB3 Link Change */ -#define MV_U3D_LINK_CHANGE_LINK_UP 0x00000001 -#define MV_U3D_LINK_CHANGE_SUSPEND 0x00000002 -#define MV_U3D_LINK_CHANGE_RESUME 0x00000004 -#define MV_U3D_LINK_CHANGE_WRESET 0x00000008 -#define MV_U3D_LINK_CHANGE_HRESET 0x00000010 -#define MV_U3D_LINK_CHANGE_VBUS_INVALID 0x00000020 -#define MV_U3D_LINK_CHANGE_INACT 0x00000040 -#define MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0 0x00000080 -#define MV_U3D_LINK_CHANGE_U1 0x00000100 -#define MV_U3D_LINK_CHANGE_U2 0x00000200 -#define MV_U3D_LINK_CHANGE_U3 0x00000400 - -/* bridge setting */ -#define MV_U3D_BRIDGE_SETTING_VBUS_VALID (1 << 16) - -/* Command Register Bit Masks */ -#define MV_U3D_CMD_RUN_STOP 0x00000001 -#define MV_U3D_CMD_CTRL_RESET 0x00000002 - -/* ep control register */ -#define MV_U3D_EPXCR_EP_TYPE_CONTROL 0 -#define MV_U3D_EPXCR_EP_TYPE_ISOC 1 -#define MV_U3D_EPXCR_EP_TYPE_BULK 2 -#define MV_U3D_EPXCR_EP_TYPE_INT 3 -#define MV_U3D_EPXCR_EP_ENABLE_SHIFT 4 -#define MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT 12 -#define MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT 16 -#define MV_U3D_USB_BULK_BURST_OUT 6 -#define MV_U3D_USB_BULK_BURST_IN 14 - -#define MV_U3D_EPXCR_EP_FLUSH (1 << 7) -#define MV_U3D_EPXCR_EP_HALT (1 << 1) -#define MV_U3D_EPXCR_EP_INIT (1) - -/* TX/RX Status Register */ -#define MV_U3D_XFERSTATUS_COMPLETE_SHIFT 24 -#define MV_U3D_COMPLETE_INVALID 0 -#define MV_U3D_COMPLETE_SUCCESS 1 -#define MV_U3D_COMPLETE_BUFF_ERR 2 -#define MV_U3D_COMPLETE_SHORT_PACKET 3 -#define MV_U3D_COMPLETE_TRB_ERR 5 -#define MV_U3D_XFERSTATUS_TRB_LENGTH_MASK (0xFFFFFF) - -#define MV_U3D_USB_LINK_BYPASS_VBUS 0x8 - -#define MV_U3D_LTSSM_PHY_INIT_DONE 0x80000000 -#define MV_U3D_LTSSM_NEVER_GO_COMPLIANCE 0x40000000 - -#define MV_U3D_USB3_OP_REGS_OFFSET 0x100 -#define MV_U3D_USB3_PHY_OFFSET 0xB800 - -#define DCS_ENABLE 0x1 - -/* timeout */ -#define MV_U3D_RESET_TIMEOUT 10000 -#define MV_U3D_FLUSH_TIMEOUT 100000 -#define MV_U3D_OWN_TIMEOUT 10000 -#define LOOPS_USEC_SHIFT 4 -#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) -#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) - -/* ep direction */ -#define MV_U3D_EP_DIR_IN 1 -#define MV_U3D_EP_DIR_OUT 0 -#define mv_u3d_ep_dir(ep) (((ep)->ep_num == 0) ? \ - ((ep)->u3d->ep0_dir) : ((ep)->direction)) - -/* usb capability registers */ -struct mv_u3d_cap_regs { - u32 rsvd[5]; - u32 dboff; /* doorbell register offset */ - u32 rtsoff; /* runtime register offset */ - u32 vuoff; /* vendor unique register offset */ -}; - -/* operation registers */ -struct mv_u3d_op_regs { - u32 usbcmd; /* Command register */ - u32 rsvd1[11]; - u32 dcbaapl; /* Device Context Base Address low register */ - u32 dcbaaph; /* Device Context Base Address high register */ - u32 rsvd2[243]; - u32 portsc; /* port status and control register*/ - u32 portlinkinfo; /* port link info register*/ - u32 rsvd3[9917]; - u32 doorbell; /* doorbell register */ -}; - -/* control endpoint enable registers */ -struct epxcr { - u32 epxoutcr0; /* ep out control 0 register */ - u32 epxoutcr1; /* ep out control 1 register */ - u32 epxincr0; /* ep in control 0 register */ - u32 epxincr1; /* ep in control 1 register */ -}; - -/* transfer status registers */ -struct xferstatus { - u32 curdeqlo; /* current TRB pointer low */ - u32 curdeqhi; /* current TRB pointer high */ - u32 statuslo; /* transfer status low */ - u32 statushi; /* transfer status high */ -}; - -/* vendor unique control registers */ -struct mv_u3d_vuc_regs { - u32 ctrlepenable; /* control endpoint enable register */ - u32 setuplock; /* setup lock register */ - u32 endcomplete; /* endpoint transfer complete register */ - u32 intrcause; /* interrupt cause register */ - u32 intrenable; /* interrupt enable register */ - u32 trbcomplete; /* TRB complete register */ - u32 linkchange; /* link change register */ - u32 rsvd1[5]; - u32 trbunderrun; /* TRB underrun register */ - u32 rsvd2[43]; - u32 bridgesetting; /* bridge setting register */ - u32 rsvd3[7]; - struct xferstatus txst[16]; /* TX status register */ - struct xferstatus rxst[16]; /* RX status register */ - u32 ltssm; /* LTSSM control register */ - u32 pipe; /* PIPE control register */ - u32 linkcr0; /* link control 0 register */ - u32 linkcr1; /* link control 1 register */ - u32 rsvd6[60]; - u32 mib0; /* MIB0 counter register */ - u32 usblink; /* usb link control register */ - u32 ltssmstate; /* LTSSM state register */ - u32 linkerrorcause; /* link error cause register */ - u32 rsvd7[60]; - u32 devaddrtiebrkr; /* device address and tie breaker */ - u32 itpinfo0; /* ITP info 0 register */ - u32 itpinfo1; /* ITP info 1 register */ - u32 rsvd8[61]; - struct epxcr epcr[16]; /* ep control register */ - u32 rsvd9[64]; - u32 phyaddr; /* PHY address register */ - u32 phydata; /* PHY data register */ -}; - -/* Endpoint context structure */ -struct mv_u3d_ep_context { - u32 rsvd0; - u32 rsvd1; - u32 trb_addr_lo; /* TRB address low 32 bit */ - u32 trb_addr_hi; /* TRB address high 32 bit */ - u32 rsvd2; - u32 rsvd3; - struct usb_ctrlrequest setup_buffer; /* setup data buffer */ -}; - -/* TRB control data structure */ -struct mv_u3d_trb_ctrl { - u32 own:1; /* owner of TRB */ - u32 rsvd1:3; - u32 chain:1; /* associate this TRB with the - next TRB on the Ring */ - u32 ioc:1; /* interrupt on complete */ - u32 rsvd2:4; - u32 type:6; /* TRB type */ -#define TYPE_NORMAL 1 -#define TYPE_DATA 3 -#define TYPE_LINK 6 - u32 dir:1; /* Working at data stage of control endpoint - operation. 0 is OUT and 1 is IN. */ - u32 rsvd3:15; -}; - -/* TRB data structure - * For multiple TRB, all the TRBs' physical address should be continuous. - */ -struct mv_u3d_trb_hw { - u32 buf_addr_lo; /* data buffer address low 32 bit */ - u32 buf_addr_hi; /* data buffer address high 32 bit */ - u32 trb_len; /* transfer length */ - struct mv_u3d_trb_ctrl ctrl; /* TRB control data */ -}; - -/* TRB structure */ -struct mv_u3d_trb { - struct mv_u3d_trb_hw *trb_hw; /* point to the trb_hw structure */ - dma_addr_t trb_dma; /* dma address for this trb_hw */ - struct list_head trb_list; /* trb list */ -}; - -/* device data structure */ -struct mv_u3d { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - spinlock_t lock; /* device lock */ - struct completion *done; - struct device *dev; - int irq; - - /* usb controller registers */ - struct mv_u3d_cap_regs __iomem *cap_regs; - struct mv_u3d_op_regs __iomem *op_regs; - struct mv_u3d_vuc_regs __iomem *vuc_regs; - void __iomem *phy_regs; - - unsigned int max_eps; - struct mv_u3d_ep_context *ep_context; - size_t ep_context_size; - dma_addr_t ep_context_dma; - - struct dma_pool *trb_pool; /* for TRB data structure */ - struct mv_u3d_ep *eps; - - struct mv_u3d_req *status_req; /* ep0 status request */ - struct usb_ctrlrequest local_setup_buff; /* store setup data*/ - - unsigned int resume_state; /* USB state to resume */ - unsigned int usb_state; /* USB current state */ - unsigned int ep0_state; /* Endpoint zero state */ - unsigned int ep0_dir; - - unsigned int dev_addr; /* device address */ - - unsigned int errors; - - unsigned softconnect:1; - unsigned vbus_active:1; /* vbus is active or not */ - unsigned remote_wakeup:1; /* support remote wakeup */ - unsigned clock_gating:1; /* clock gating or not */ - unsigned active:1; /* udc is active or not */ - unsigned vbus_valid_detect:1; /* udc vbus detection */ - - struct mv_usb_addon_irq *vbus; - unsigned int power; - - struct clk *clk; -}; - -/* endpoint data structure */ -struct mv_u3d_ep { - struct usb_ep ep; - struct mv_u3d *u3d; - struct list_head queue; /* ep request queued hardware */ - struct list_head req_list; /* list of ep request */ - struct mv_u3d_ep_context *ep_context; /* ep context */ - u32 direction; - char name[14]; - u32 processing; /* there is ep request - queued on haredware */ - spinlock_t req_lock; /* ep lock */ - unsigned wedge:1; - unsigned enabled:1; - unsigned ep_type:2; - unsigned ep_num:8; -}; - -/* request data structure */ -struct mv_u3d_req { - struct usb_request req; - struct mv_u3d_ep *ep; - struct list_head queue; /* ep requst queued on hardware */ - struct list_head list; /* ep request list */ - struct list_head trb_list; /* trb list of a request */ - - struct mv_u3d_trb *trb_head; /* point to first trb of a request */ - unsigned trb_count; /* TRB number in the chain */ - unsigned chain; /* TRB chain or not */ -}; - -#endif diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c deleted file mode 100644 index 3473048a85f5..000000000000 --- a/drivers/usb/gadget/udc/mv_u3d_core.c +++ /dev/null @@ -1,2062 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - */ - -#include <linux/module.h> -#include <linux/dma-mapping.h> -#include <linux/dmapool.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/timer.h> -#include <linux/list.h> -#include <linux/notifier.h> -#include <linux/interrupt.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/pm.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/platform_device.h> -#include <linux/platform_data/mv_usb.h> -#include <linux/clk.h> - -#include "mv_u3d.h" - -#define DRIVER_DESC "Marvell PXA USB3.0 Device Controller driver" - -static const char driver_name[] = "mv_u3d"; - -static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status); -static void mv_u3d_stop_activity(struct mv_u3d *u3d, - struct usb_gadget_driver *driver); - -/* for endpoint 0 operations */ -static const struct usb_endpoint_descriptor mv_u3d_ep0_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - .wMaxPacketSize = MV_U3D_EP0_MAX_PKT_SIZE, -}; - -static void mv_u3d_ep0_reset(struct mv_u3d *u3d) -{ - struct mv_u3d_ep *ep; - u32 epxcr; - int i; - - for (i = 0; i < 2; i++) { - ep = &u3d->eps[i]; - ep->u3d = u3d; - - /* ep0 ep context, ep0 in and out share the same ep context */ - ep->ep_context = &u3d->ep_context[1]; - } - - /* reset ep state machine */ - /* reset ep0 out */ - epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); - epxcr |= MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); - udelay(5); - epxcr &= ~MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr0); - - epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE - << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | MV_U3D_EPXCR_EP_TYPE_CONTROL); - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxoutcr1); - - /* reset ep0 in */ - epxcr = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); - epxcr |= MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); - udelay(5); - epxcr &= ~MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr0); - - epxcr = ((MV_U3D_EP0_MAX_PKT_SIZE - << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | MV_U3D_EPXCR_EP_TYPE_CONTROL); - iowrite32(epxcr, &u3d->vuc_regs->epcr[0].epxincr1); -} - -static void mv_u3d_ep0_stall(struct mv_u3d *u3d) -{ - u32 tmp; - dev_dbg(u3d->dev, "%s\n", __func__); - - /* set TX and RX to stall */ - tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); - tmp |= MV_U3D_EPXCR_EP_HALT; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); - - tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); - tmp |= MV_U3D_EPXCR_EP_HALT; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); - - /* update ep0 state */ - u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; - u3d->ep0_dir = MV_U3D_EP_DIR_OUT; -} - -static int mv_u3d_process_ep_req(struct mv_u3d *u3d, int index, - struct mv_u3d_req *curr_req) -{ - struct mv_u3d_trb *curr_trb; - int actual, remaining_length = 0; - int direction, ep_num; - int retval = 0; - u32 tmp, status, length; - - direction = index % 2; - ep_num = index / 2; - - actual = curr_req->req.length; - - while (!list_empty(&curr_req->trb_list)) { - curr_trb = list_entry(curr_req->trb_list.next, - struct mv_u3d_trb, trb_list); - if (!curr_trb->trb_hw->ctrl.own) { - dev_err(u3d->dev, "%s, TRB own error!\n", - u3d->eps[index].name); - return 1; - } - - curr_trb->trb_hw->ctrl.own = 0; - if (direction == MV_U3D_EP_DIR_OUT) - tmp = ioread32(&u3d->vuc_regs->rxst[ep_num].statuslo); - else - tmp = ioread32(&u3d->vuc_regs->txst[ep_num].statuslo); - - status = tmp >> MV_U3D_XFERSTATUS_COMPLETE_SHIFT; - length = tmp & MV_U3D_XFERSTATUS_TRB_LENGTH_MASK; - - if (status == MV_U3D_COMPLETE_SUCCESS || - (status == MV_U3D_COMPLETE_SHORT_PACKET && - direction == MV_U3D_EP_DIR_OUT)) { - remaining_length += length; - actual -= remaining_length; - } else { - dev_err(u3d->dev, - "complete_tr error: ep=%d %s: error = 0x%x\n", - index >> 1, direction ? "SEND" : "RECV", - status); - retval = -EPROTO; - } - - list_del_init(&curr_trb->trb_list); - } - if (retval) - return retval; - - curr_req->req.actual = actual; - return 0; -} - -/* - * mv_u3d_done() - retire a request; caller blocked irqs - * @status : request status to be set, only works when - * request is still in progress. - */ -static -void mv_u3d_done(struct mv_u3d_ep *ep, struct mv_u3d_req *req, int status) - __releases(&ep->udc->lock) - __acquires(&ep->udc->lock) -{ - struct mv_u3d *u3d = (struct mv_u3d *)ep->u3d; - - dev_dbg(u3d->dev, "mv_u3d_done: remove req->queue\n"); - /* Removed the req from ep queue */ - list_del_init(&req->queue); - - /* req.status should be set as -EINPROGRESS in ep_queue() */ - if (req->req.status == -EINPROGRESS) - req->req.status = status; - else - status = req->req.status; - - /* Free trb for the request */ - if (!req->chain) - dma_pool_free(u3d->trb_pool, - req->trb_head->trb_hw, req->trb_head->trb_dma); - else { - dma_unmap_single(ep->u3d->gadget.dev.parent, - (dma_addr_t)req->trb_head->trb_dma, - req->trb_count * sizeof(struct mv_u3d_trb_hw), - DMA_BIDIRECTIONAL); - kfree(req->trb_head->trb_hw); - } - kfree(req->trb_head); - - usb_gadget_unmap_request(&u3d->gadget, &req->req, mv_u3d_ep_dir(ep)); - - if (status && (status != -ESHUTDOWN)) { - dev_dbg(u3d->dev, "complete %s req %p stat %d len %u/%u", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - } - - spin_unlock(&ep->u3d->lock); - - usb_gadget_giveback_request(&ep->ep, &req->req); - - spin_lock(&ep->u3d->lock); -} - -static int mv_u3d_queue_trb(struct mv_u3d_ep *ep, struct mv_u3d_req *req) -{ - u32 tmp, direction; - struct mv_u3d *u3d; - struct mv_u3d_ep_context *ep_context; - int retval = 0; - - u3d = ep->u3d; - direction = mv_u3d_ep_dir(ep); - - /* ep0 in and out share the same ep context slot 1*/ - if (ep->ep_num == 0) - ep_context = &(u3d->ep_context[1]); - else - ep_context = &(u3d->ep_context[ep->ep_num * 2 + direction]); - - /* check if the pipe is empty or not */ - if (!list_empty(&ep->queue)) { - dev_err(u3d->dev, "add trb to non-empty queue!\n"); - retval = -ENOMEM; - WARN_ON(1); - } else { - ep_context->rsvd0 = cpu_to_le32(1); - ep_context->rsvd1 = 0; - - /* Configure the trb address and set the DCS bit. - * Both DCS bit and own bit in trb should be set. - */ - ep_context->trb_addr_lo = - cpu_to_le32(req->trb_head->trb_dma | DCS_ENABLE); - ep_context->trb_addr_hi = 0; - - /* Ensure that updates to the EP Context will - * occure before Ring Bell. - */ - wmb(); - - /* ring bell the ep */ - if (ep->ep_num == 0) - tmp = 0x1; - else - tmp = ep->ep_num * 2 - + ((direction == MV_U3D_EP_DIR_OUT) ? 0 : 1); - - iowrite32(tmp, &u3d->op_regs->doorbell); - } - return retval; -} - -static struct mv_u3d_trb *mv_u3d_build_trb_one(struct mv_u3d_req *req, - unsigned *length, dma_addr_t *dma) -{ - u32 temp; - unsigned int direction; - struct mv_u3d_trb *trb; - struct mv_u3d_trb_hw *trb_hw; - struct mv_u3d *u3d; - - /* how big will this transfer be? */ - *length = req->req.length - req->req.actual; - BUG_ON(*length > (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); - - u3d = req->ep->u3d; - - trb = kzalloc(sizeof(*trb), GFP_ATOMIC); - if (!trb) - return NULL; - - /* - * Be careful that no _GFP_HIGHMEM is set, - * or we can not use dma_to_virt - * cannot use GFP_KERNEL in spin lock - */ - trb_hw = dma_pool_alloc(u3d->trb_pool, GFP_ATOMIC, dma); - if (!trb_hw) { - kfree(trb); - dev_err(u3d->dev, - "%s, dma_pool_alloc fail\n", __func__); - return NULL; - } - trb->trb_dma = *dma; - trb->trb_hw = trb_hw; - - /* initialize buffer page pointers */ - temp = (u32)(req->req.dma + req->req.actual); - - trb_hw->buf_addr_lo = cpu_to_le32(temp); - trb_hw->buf_addr_hi = 0; - trb_hw->trb_len = cpu_to_le32(*length); - trb_hw->ctrl.own = 1; - - if (req->ep->ep_num == 0) - trb_hw->ctrl.type = TYPE_DATA; - else - trb_hw->ctrl.type = TYPE_NORMAL; - - req->req.actual += *length; - - direction = mv_u3d_ep_dir(req->ep); - if (direction == MV_U3D_EP_DIR_IN) - trb_hw->ctrl.dir = 1; - else - trb_hw->ctrl.dir = 0; - - /* Enable interrupt for the last trb of a request */ - if (!req->req.no_interrupt) - trb_hw->ctrl.ioc = 1; - - trb_hw->ctrl.chain = 0; - - wmb(); - return trb; -} - -static int mv_u3d_build_trb_chain(struct mv_u3d_req *req, unsigned *length, - struct mv_u3d_trb *trb, int *is_last) -{ - u32 temp; - unsigned int direction; - struct mv_u3d *u3d; - - /* how big will this transfer be? */ - *length = min(req->req.length - req->req.actual, - (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER); - - u3d = req->ep->u3d; - - trb->trb_dma = 0; - - /* initialize buffer page pointers */ - temp = (u32)(req->req.dma + req->req.actual); - - trb->trb_hw->buf_addr_lo = cpu_to_le32(temp); - trb->trb_hw->buf_addr_hi = 0; - trb->trb_hw->trb_len = cpu_to_le32(*length); - trb->trb_hw->ctrl.own = 1; - - if (req->ep->ep_num == 0) - trb->trb_hw->ctrl.type = TYPE_DATA; - else - trb->trb_hw->ctrl.type = TYPE_NORMAL; - - req->req.actual += *length; - - direction = mv_u3d_ep_dir(req->ep); - if (direction == MV_U3D_EP_DIR_IN) - trb->trb_hw->ctrl.dir = 1; - else - trb->trb_hw->ctrl.dir = 0; - - /* zlp is needed if req->req.zero is set */ - if (req->req.zero) { - if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) - *is_last = 1; - else - *is_last = 0; - } else if (req->req.length == req->req.actual) - *is_last = 1; - else - *is_last = 0; - - /* Enable interrupt for the last trb of a request */ - if (*is_last && !req->req.no_interrupt) - trb->trb_hw->ctrl.ioc = 1; - - if (*is_last) - trb->trb_hw->ctrl.chain = 0; - else { - trb->trb_hw->ctrl.chain = 1; - dev_dbg(u3d->dev, "chain trb\n"); - } - - wmb(); - - return 0; -} - -/* generate TRB linked list for a request - * usb controller only supports continous trb chain, - * that trb structure physical address should be continous. - */ -static int mv_u3d_req_to_trb(struct mv_u3d_req *req) -{ - unsigned count; - int is_last; - struct mv_u3d_trb *trb; - struct mv_u3d_trb_hw *trb_hw; - struct mv_u3d *u3d; - dma_addr_t dma; - unsigned length; - unsigned trb_num; - - u3d = req->ep->u3d; - - INIT_LIST_HEAD(&req->trb_list); - - length = req->req.length - req->req.actual; - /* normally the request transfer length is less than 16KB. - * we use buil_trb_one() to optimize it. - */ - if (length <= (unsigned)MV_U3D_EP_MAX_LENGTH_TRANSFER) { - trb = mv_u3d_build_trb_one(req, &count, &dma); - list_add_tail(&trb->trb_list, &req->trb_list); - req->trb_head = trb; - req->trb_count = 1; - req->chain = 0; - } else { - trb_num = length / MV_U3D_EP_MAX_LENGTH_TRANSFER; - if (length % MV_U3D_EP_MAX_LENGTH_TRANSFER) - trb_num++; - - trb = kcalloc(trb_num, sizeof(*trb), GFP_ATOMIC); - if (!trb) - return -ENOMEM; - - trb_hw = kcalloc(trb_num, sizeof(*trb_hw), GFP_ATOMIC); - if (!trb_hw) { - kfree(trb); - return -ENOMEM; - } - - do { - trb->trb_hw = trb_hw; - if (mv_u3d_build_trb_chain(req, &count, - trb, &is_last)) { - dev_err(u3d->dev, - "%s, mv_u3d_build_trb_chain fail\n", - __func__); - return -EIO; - } - - list_add_tail(&trb->trb_list, &req->trb_list); - req->trb_count++; - trb++; - trb_hw++; - } while (!is_last); - - req->trb_head = list_entry(req->trb_list.next, - struct mv_u3d_trb, trb_list); - req->trb_head->trb_dma = dma_map_single(u3d->gadget.dev.parent, - req->trb_head->trb_hw, - trb_num * sizeof(*trb_hw), - DMA_BIDIRECTIONAL); - if (dma_mapping_error(u3d->gadget.dev.parent, - req->trb_head->trb_dma)) { - kfree(req->trb_head->trb_hw); - kfree(req->trb_head); - return -EFAULT; - } - - req->chain = 1; - } - - return 0; -} - -static int -mv_u3d_start_queue(struct mv_u3d_ep *ep) -{ - struct mv_u3d *u3d = ep->u3d; - struct mv_u3d_req *req; - int ret; - - if (!list_empty(&ep->req_list) && !ep->processing) - req = list_entry(ep->req_list.next, struct mv_u3d_req, list); - else - return 0; - - ep->processing = 1; - - /* set up dma mapping */ - ret = usb_gadget_map_request(&u3d->gadget, &req->req, - mv_u3d_ep_dir(ep)); - if (ret) - goto break_processing; - - req->req.status = -EINPROGRESS; - req->req.actual = 0; - req->trb_count = 0; - - /* build trbs */ - ret = mv_u3d_req_to_trb(req); - if (ret) { - dev_err(u3d->dev, "%s, mv_u3d_req_to_trb fail\n", __func__); - goto break_processing; - } - - /* and push them to device queue */ - ret = mv_u3d_queue_trb(ep, req); - if (ret) - goto break_processing; - - /* irq handler advances the queue */ - list_add_tail(&req->queue, &ep->queue); - - return 0; - -break_processing: - ep->processing = 0; - return ret; -} - -static int mv_u3d_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct mv_u3d *u3d; - struct mv_u3d_ep *ep; - u16 max = 0; - unsigned maxburst = 0; - u32 epxcr, direction; - - if (!_ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) - return -EINVAL; - - ep = container_of(_ep, struct mv_u3d_ep, ep); - u3d = ep->u3d; - - if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - direction = mv_u3d_ep_dir(ep); - max = le16_to_cpu(desc->wMaxPacketSize); - - if (!_ep->maxburst) - _ep->maxburst = 1; - maxburst = _ep->maxburst; - - /* Set the max burst size */ - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: - if (maxburst > 16) { - dev_dbg(u3d->dev, - "max burst should not be greater " - "than 16 on bulk ep\n"); - maxburst = 1; - _ep->maxburst = maxburst; - } - dev_dbg(u3d->dev, - "maxburst: %d on bulk %s\n", maxburst, ep->name); - break; - case USB_ENDPOINT_XFER_CONTROL: - /* control transfer only supports maxburst as one */ - maxburst = 1; - _ep->maxburst = maxburst; - break; - case USB_ENDPOINT_XFER_INT: - if (maxburst != 1) { - dev_dbg(u3d->dev, - "max burst should be 1 on int ep " - "if transfer size is not 1024\n"); - maxburst = 1; - _ep->maxburst = maxburst; - } - break; - case USB_ENDPOINT_XFER_ISOC: - if (maxburst != 1) { - dev_dbg(u3d->dev, - "max burst should be 1 on isoc ep " - "if transfer size is not 1024\n"); - maxburst = 1; - _ep->maxburst = maxburst; - } - break; - default: - goto en_done; - } - - ep->ep.maxpacket = max; - ep->ep.desc = desc; - ep->enabled = 1; - - /* Enable the endpoint for Rx or Tx and set the endpoint type */ - if (direction == MV_U3D_EP_DIR_OUT) { - epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - epxcr |= MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - udelay(5); - epxcr &= ~MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - - epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) - | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); - } else { - epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - epxcr |= MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - udelay(5); - epxcr &= ~MV_U3D_EPXCR_EP_INIT; - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - - epxcr = ((max << MV_U3D_EPXCR_MAX_PACKET_SIZE_SHIFT) - | ((maxburst - 1) << MV_U3D_EPXCR_MAX_BURST_SIZE_SHIFT) - | (1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)); - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); - } - - return 0; -en_done: - return -EINVAL; -} - -static int mv_u3d_ep_disable(struct usb_ep *_ep) -{ - struct mv_u3d *u3d; - struct mv_u3d_ep *ep; - u32 epxcr, direction; - unsigned long flags; - - if (!_ep) - return -EINVAL; - - ep = container_of(_ep, struct mv_u3d_ep, ep); - if (!ep->ep.desc) - return -EINVAL; - - u3d = ep->u3d; - - direction = mv_u3d_ep_dir(ep); - - /* nuke all pending requests (does flush) */ - spin_lock_irqsave(&u3d->lock, flags); - mv_u3d_nuke(ep, -ESHUTDOWN); - spin_unlock_irqrestore(&u3d->lock, flags); - - /* Disable the endpoint for Rx or Tx and reset the endpoint type */ - if (direction == MV_U3D_EP_DIR_OUT) { - epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); - epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | USB_ENDPOINT_XFERTYPE_MASK); - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr1); - } else { - epxcr = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr1); - epxcr &= ~((1 << MV_U3D_EPXCR_EP_ENABLE_SHIFT) - | USB_ENDPOINT_XFERTYPE_MASK); - iowrite32(epxcr, &u3d->vuc_regs->epcr[ep->ep_num].epxincr1); - } - - ep->enabled = 0; - - ep->ep.desc = NULL; - return 0; -} - -static struct usb_request * -mv_u3d_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) -{ - struct mv_u3d_req *req = NULL; - - req = kzalloc(sizeof *req, gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void mv_u3d_free_request(struct usb_ep *_ep, struct usb_request *_req) -{ - struct mv_u3d_req *req = container_of(_req, struct mv_u3d_req, req); - - kfree(req); -} - -static void mv_u3d_ep_fifo_flush(struct usb_ep *_ep) -{ - struct mv_u3d *u3d; - u32 direction; - struct mv_u3d_ep *ep = container_of(_ep, struct mv_u3d_ep, ep); - unsigned int loops; - u32 tmp; - - /* if endpoint is not enabled, cannot flush endpoint */ - if (!ep->enabled) - return; - - u3d = ep->u3d; - direction = mv_u3d_ep_dir(ep); - - /* ep0 need clear bit after flushing fifo. */ - if (!ep->ep_num) { - if (direction == MV_U3D_EP_DIR_OUT) { - tmp = ioread32(&u3d->vuc_regs->epcr[0].epxoutcr0); - tmp |= MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); - udelay(10); - tmp &= ~MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxoutcr0); - } else { - tmp = ioread32(&u3d->vuc_regs->epcr[0].epxincr0); - tmp |= MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); - udelay(10); - tmp &= ~MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[0].epxincr0); - } - return; - } - - if (direction == MV_U3D_EP_DIR_OUT) { - tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - tmp |= MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - - /* Wait until flushing completed */ - loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); - while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0) & - MV_U3D_EPXCR_EP_FLUSH) { - /* - * EP_FLUSH bit should be cleared to indicate this - * operation is complete - */ - if (loops == 0) { - dev_dbg(u3d->dev, - "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, - direction ? "in" : "out"); - return; - } - loops--; - udelay(LOOPS_USEC); - } - } else { /* EP_DIR_IN */ - tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - tmp |= MV_U3D_EPXCR_EP_FLUSH; - iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - - /* Wait until flushing completed */ - loops = LOOPS(MV_U3D_FLUSH_TIMEOUT); - while (ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0) & - MV_U3D_EPXCR_EP_FLUSH) { - /* - * EP_FLUSH bit should be cleared to indicate this - * operation is complete - */ - if (loops == 0) { - dev_dbg(u3d->dev, - "EP FLUSH TIMEOUT for ep%d%s\n", ep->ep_num, - direction ? "in" : "out"); - return; - } - loops--; - udelay(LOOPS_USEC); - } - } -} - -/* queues (submits) an I/O request to an endpoint */ -static int -mv_u3d_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) -{ - struct mv_u3d_ep *ep; - struct mv_u3d_req *req; - struct mv_u3d *u3d; - unsigned long flags; - int is_first_req = 0; - - if (unlikely(!_ep || !_req)) - return -EINVAL; - - ep = container_of(_ep, struct mv_u3d_ep, ep); - u3d = ep->u3d; - - req = container_of(_req, struct mv_u3d_req, req); - - if (!ep->ep_num - && u3d->ep0_state == MV_U3D_STATUS_STAGE - && !_req->length) { - dev_dbg(u3d->dev, "ep0 status stage\n"); - u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; - return 0; - } - - dev_dbg(u3d->dev, "%s: %s, req: 0x%p\n", - __func__, _ep->name, req); - - /* catch various bogus parameters */ - if (!req->req.complete || !req->req.buf - || !list_empty(&req->queue)) { - dev_err(u3d->dev, - "%s, bad params, _req: 0x%p," - "req->req.complete: 0x%p, req->req.buf: 0x%p," - "list_empty: 0x%x\n", - __func__, _req, - req->req.complete, req->req.buf, - list_empty(&req->queue)); - return -EINVAL; - } - if (unlikely(!ep->ep.desc)) { - dev_err(u3d->dev, "%s, bad ep\n", __func__); - return -EINVAL; - } - if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - if (req->req.length > ep->ep.maxpacket) - return -EMSGSIZE; - } - - if (!u3d->driver || u3d->gadget.speed == USB_SPEED_UNKNOWN) { - dev_err(u3d->dev, - "bad params of driver/speed\n"); - return -ESHUTDOWN; - } - - req->ep = ep; - - /* Software list handles usb request. */ - spin_lock_irqsave(&ep->req_lock, flags); - is_first_req = list_empty(&ep->req_list); - list_add_tail(&req->list, &ep->req_list); - spin_unlock_irqrestore(&ep->req_lock, flags); - if (!is_first_req) { - dev_dbg(u3d->dev, "list is not empty\n"); - return 0; - } - - dev_dbg(u3d->dev, "call mv_u3d_start_queue from usb_ep_queue\n"); - spin_lock_irqsave(&u3d->lock, flags); - mv_u3d_start_queue(ep); - spin_unlock_irqrestore(&u3d->lock, flags); - return 0; -} - -/* dequeues (cancels, unlinks) an I/O request from an endpoint */ -static int mv_u3d_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct mv_u3d_ep *ep; - struct mv_u3d_req *req = NULL, *iter; - struct mv_u3d *u3d; - struct mv_u3d_ep_context *ep_context; - struct mv_u3d_req *next_req; - - unsigned long flags; - int ret = 0; - - if (!_ep || !_req) - return -EINVAL; - - ep = container_of(_ep, struct mv_u3d_ep, ep); - u3d = ep->u3d; - - spin_lock_irqsave(&ep->u3d->lock, flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(iter, &ep->queue, queue) { - if (&iter->req != _req) - continue; - req = iter; - break; - } - if (!req) { - ret = -EINVAL; - goto out; - } - - /* The request is in progress, or completed but not dequeued */ - if (ep->queue.next == &req->queue) { - _req->status = -ECONNRESET; - mv_u3d_ep_fifo_flush(_ep); - - /* The request isn't the last request in this ep queue */ - if (req->queue.next != &ep->queue) { - dev_dbg(u3d->dev, - "it is the last request in this ep queue\n"); - ep_context = ep->ep_context; - next_req = list_entry(req->queue.next, - struct mv_u3d_req, queue); - - /* Point first TRB of next request to the EP context. */ - iowrite32((unsigned long) next_req->trb_head, - &ep_context->trb_addr_lo); - } else { - struct mv_u3d_ep_context *ep_context; - ep_context = ep->ep_context; - ep_context->trb_addr_lo = 0; - ep_context->trb_addr_hi = 0; - } - - } else - WARN_ON(1); - - mv_u3d_done(ep, req, -ECONNRESET); - - /* remove the req from the ep req list */ - if (!list_empty(&ep->req_list)) { - struct mv_u3d_req *curr_req; - curr_req = list_entry(ep->req_list.next, - struct mv_u3d_req, list); - if (curr_req == req) { - list_del_init(&req->list); - ep->processing = 0; - } - } - -out: - spin_unlock_irqrestore(&ep->u3d->lock, flags); - return ret; -} - -static void -mv_u3d_ep_set_stall(struct mv_u3d *u3d, u8 ep_num, u8 direction, int stall) -{ - u32 tmp; - struct mv_u3d_ep *ep = u3d->eps; - - dev_dbg(u3d->dev, "%s\n", __func__); - if (direction == MV_U3D_EP_DIR_OUT) { - tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - if (stall) - tmp |= MV_U3D_EPXCR_EP_HALT; - else - tmp &= ~MV_U3D_EPXCR_EP_HALT; - iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxoutcr0); - } else { - tmp = ioread32(&u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - if (stall) - tmp |= MV_U3D_EPXCR_EP_HALT; - else - tmp &= ~MV_U3D_EPXCR_EP_HALT; - iowrite32(tmp, &u3d->vuc_regs->epcr[ep->ep_num].epxincr0); - } -} - -static int mv_u3d_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) -{ - struct mv_u3d_ep *ep; - unsigned long flags; - int status = 0; - struct mv_u3d *u3d; - - ep = container_of(_ep, struct mv_u3d_ep, ep); - u3d = ep->u3d; - if (!ep->ep.desc) { - status = -EINVAL; - goto out; - } - - if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - status = -EOPNOTSUPP; - goto out; - } - - /* - * Attempt to halt IN ep will fail if any transfer requests - * are still queue - */ - if (halt && (mv_u3d_ep_dir(ep) == MV_U3D_EP_DIR_IN) - && !list_empty(&ep->queue)) { - status = -EAGAIN; - goto out; - } - - spin_lock_irqsave(&ep->u3d->lock, flags); - mv_u3d_ep_set_stall(u3d, ep->ep_num, mv_u3d_ep_dir(ep), halt); - if (halt && wedge) - ep->wedge = 1; - else if (!halt) - ep->wedge = 0; - spin_unlock_irqrestore(&ep->u3d->lock, flags); - - if (ep->ep_num == 0) - u3d->ep0_dir = MV_U3D_EP_DIR_OUT; -out: - return status; -} - -static int mv_u3d_ep_set_halt(struct usb_ep *_ep, int halt) -{ - return mv_u3d_ep_set_halt_wedge(_ep, halt, 0); -} - -static int mv_u3d_ep_set_wedge(struct usb_ep *_ep) -{ - return mv_u3d_ep_set_halt_wedge(_ep, 1, 1); -} - -static const struct usb_ep_ops mv_u3d_ep_ops = { - .enable = mv_u3d_ep_enable, - .disable = mv_u3d_ep_disable, - - .alloc_request = mv_u3d_alloc_request, - .free_request = mv_u3d_free_request, - - .queue = mv_u3d_ep_queue, - .dequeue = mv_u3d_ep_dequeue, - - .set_wedge = mv_u3d_ep_set_wedge, - .set_halt = mv_u3d_ep_set_halt, - .fifo_flush = mv_u3d_ep_fifo_flush, -}; - -static void mv_u3d_controller_stop(struct mv_u3d *u3d) -{ - u32 tmp; - - if (!u3d->clock_gating && u3d->vbus_valid_detect) - iowrite32(MV_U3D_INTR_ENABLE_VBUS_VALID, - &u3d->vuc_regs->intrenable); - else - iowrite32(0, &u3d->vuc_regs->intrenable); - iowrite32(~0x0, &u3d->vuc_regs->endcomplete); - iowrite32(~0x0, &u3d->vuc_regs->trbunderrun); - iowrite32(~0x0, &u3d->vuc_regs->trbcomplete); - iowrite32(~0x0, &u3d->vuc_regs->linkchange); - iowrite32(0x1, &u3d->vuc_regs->setuplock); - - /* Reset the RUN bit in the command register to stop USB */ - tmp = ioread32(&u3d->op_regs->usbcmd); - tmp &= ~MV_U3D_CMD_RUN_STOP; - iowrite32(tmp, &u3d->op_regs->usbcmd); - dev_dbg(u3d->dev, "after u3d_stop, USBCMD 0x%x\n", - ioread32(&u3d->op_regs->usbcmd)); -} - -static void mv_u3d_controller_start(struct mv_u3d *u3d) -{ - u32 usbintr; - u32 temp; - - /* enable link LTSSM state machine */ - temp = ioread32(&u3d->vuc_regs->ltssm); - temp |= MV_U3D_LTSSM_PHY_INIT_DONE; - iowrite32(temp, &u3d->vuc_regs->ltssm); - - /* Enable interrupts */ - usbintr = MV_U3D_INTR_ENABLE_LINK_CHG | MV_U3D_INTR_ENABLE_TXDESC_ERR | - MV_U3D_INTR_ENABLE_RXDESC_ERR | MV_U3D_INTR_ENABLE_TX_COMPLETE | - MV_U3D_INTR_ENABLE_RX_COMPLETE | MV_U3D_INTR_ENABLE_SETUP | - (u3d->vbus_valid_detect ? MV_U3D_INTR_ENABLE_VBUS_VALID : 0); - iowrite32(usbintr, &u3d->vuc_regs->intrenable); - - /* Enable ctrl ep */ - iowrite32(0x1, &u3d->vuc_regs->ctrlepenable); - - /* Set the Run bit in the command register */ - iowrite32(MV_U3D_CMD_RUN_STOP, &u3d->op_regs->usbcmd); - dev_dbg(u3d->dev, "after u3d_start, USBCMD 0x%x\n", - ioread32(&u3d->op_regs->usbcmd)); -} - -static int mv_u3d_controller_reset(struct mv_u3d *u3d) -{ - unsigned int loops; - u32 tmp; - - /* Stop the controller */ - tmp = ioread32(&u3d->op_regs->usbcmd); - tmp &= ~MV_U3D_CMD_RUN_STOP; - iowrite32(tmp, &u3d->op_regs->usbcmd); - - /* Reset the controller to get default values */ - iowrite32(MV_U3D_CMD_CTRL_RESET, &u3d->op_regs->usbcmd); - - /* wait for reset to complete */ - loops = LOOPS(MV_U3D_RESET_TIMEOUT); - while (ioread32(&u3d->op_regs->usbcmd) & MV_U3D_CMD_CTRL_RESET) { - if (loops == 0) { - dev_err(u3d->dev, - "Wait for RESET completed TIMEOUT\n"); - return -ETIMEDOUT; - } - loops--; - udelay(LOOPS_USEC); - } - - /* Configure the Endpoint Context Address */ - iowrite32(u3d->ep_context_dma, &u3d->op_regs->dcbaapl); - iowrite32(0, &u3d->op_regs->dcbaaph); - - return 0; -} - -static int mv_u3d_enable(struct mv_u3d *u3d) -{ - struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); - int retval; - - if (u3d->active) - return 0; - - if (!u3d->clock_gating) { - u3d->active = 1; - return 0; - } - - dev_dbg(u3d->dev, "enable u3d\n"); - clk_enable(u3d->clk); - if (pdata->phy_init) { - retval = pdata->phy_init(u3d->phy_regs); - if (retval) { - dev_err(u3d->dev, - "init phy error %d\n", retval); - clk_disable(u3d->clk); - return retval; - } - } - u3d->active = 1; - - return 0; -} - -static void mv_u3d_disable(struct mv_u3d *u3d) -{ - struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); - if (u3d->clock_gating && u3d->active) { - dev_dbg(u3d->dev, "disable u3d\n"); - if (pdata->phy_deinit) - pdata->phy_deinit(u3d->phy_regs); - clk_disable(u3d->clk); - u3d->active = 0; - } -} - -static int mv_u3d_vbus_session(struct usb_gadget *gadget, int is_active) -{ - struct mv_u3d *u3d; - unsigned long flags; - int retval = 0; - - u3d = container_of(gadget, struct mv_u3d, gadget); - - spin_lock_irqsave(&u3d->lock, flags); - - u3d->vbus_active = (is_active != 0); - dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", - __func__, u3d->softconnect, u3d->vbus_active); - /* - * 1. external VBUS detect: we can disable/enable clock on demand. - * 2. UDC VBUS detect: we have to enable clock all the time. - * 3. No VBUS detect: we have to enable clock all the time. - */ - if (u3d->driver && u3d->softconnect && u3d->vbus_active) { - retval = mv_u3d_enable(u3d); - if (retval == 0) { - /* - * after clock is disabled, we lost all the register - * context. We have to re-init registers - */ - mv_u3d_controller_reset(u3d); - mv_u3d_ep0_reset(u3d); - mv_u3d_controller_start(u3d); - } - } else if (u3d->driver && u3d->softconnect) { - if (!u3d->active) - goto out; - - /* stop all the transfer in queue*/ - mv_u3d_stop_activity(u3d, u3d->driver); - mv_u3d_controller_stop(u3d); - mv_u3d_disable(u3d); - } - -out: - spin_unlock_irqrestore(&u3d->lock, flags); - return retval; -} - -/* constrain controller's VBUS power usage - * This call is used by gadget drivers during SET_CONFIGURATION calls, - * reporting how much power the device may consume. For example, this - * could affect how quickly batteries are recharged. - * - * Returns zero on success, else negative errno. - */ -static int mv_u3d_vbus_draw(struct usb_gadget *gadget, unsigned mA) -{ - struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); - - u3d->power = mA; - - return 0; -} - -static int mv_u3d_pullup(struct usb_gadget *gadget, int is_on) -{ - struct mv_u3d *u3d = container_of(gadget, struct mv_u3d, gadget); - unsigned long flags; - int retval = 0; - - spin_lock_irqsave(&u3d->lock, flags); - - dev_dbg(u3d->dev, "%s: softconnect %d, vbus_active %d\n", - __func__, u3d->softconnect, u3d->vbus_active); - u3d->softconnect = (is_on != 0); - if (u3d->driver && u3d->softconnect && u3d->vbus_active) { - retval = mv_u3d_enable(u3d); - if (retval == 0) { - /* - * after clock is disabled, we lost all the register - * context. We have to re-init registers - */ - mv_u3d_controller_reset(u3d); - mv_u3d_ep0_reset(u3d); - mv_u3d_controller_start(u3d); - } - } else if (u3d->driver && u3d->vbus_active) { - /* stop all the transfer in queue*/ - mv_u3d_stop_activity(u3d, u3d->driver); - mv_u3d_controller_stop(u3d); - mv_u3d_disable(u3d); - } - - spin_unlock_irqrestore(&u3d->lock, flags); - - return retval; -} - -static int mv_u3d_start(struct usb_gadget *g, - struct usb_gadget_driver *driver) -{ - struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); - unsigned long flags; - - if (u3d->driver) - return -EBUSY; - - spin_lock_irqsave(&u3d->lock, flags); - - if (!u3d->clock_gating) { - clk_enable(u3d->clk); - if (pdata->phy_init) - pdata->phy_init(u3d->phy_regs); - } - - /* hook up the driver ... */ - u3d->driver = driver; - - u3d->ep0_dir = USB_DIR_OUT; - - spin_unlock_irqrestore(&u3d->lock, flags); - - u3d->vbus_valid_detect = 1; - - return 0; -} - -static int mv_u3d_stop(struct usb_gadget *g) -{ - struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); - unsigned long flags; - - u3d->vbus_valid_detect = 0; - spin_lock_irqsave(&u3d->lock, flags); - - /* enable clock to access controller register */ - clk_enable(u3d->clk); - if (pdata->phy_init) - pdata->phy_init(u3d->phy_regs); - - mv_u3d_controller_stop(u3d); - /* stop all usb activities */ - u3d->gadget.speed = USB_SPEED_UNKNOWN; - mv_u3d_stop_activity(u3d, NULL); - mv_u3d_disable(u3d); - - if (pdata->phy_deinit) - pdata->phy_deinit(u3d->phy_regs); - clk_disable(u3d->clk); - - spin_unlock_irqrestore(&u3d->lock, flags); - - u3d->driver = NULL; - - return 0; -} - -/* device controller usb_gadget_ops structure */ -static const struct usb_gadget_ops mv_u3d_ops = { - /* notify controller that VBUS is powered or not */ - .vbus_session = mv_u3d_vbus_session, - - /* constrain controller's VBUS power usage */ - .vbus_draw = mv_u3d_vbus_draw, - - .pullup = mv_u3d_pullup, - .udc_start = mv_u3d_start, - .udc_stop = mv_u3d_stop, -}; - -static int mv_u3d_eps_init(struct mv_u3d *u3d) -{ - struct mv_u3d_ep *ep; - char name[14]; - int i; - - /* initialize ep0, ep0 in/out use eps[1] */ - ep = &u3d->eps[1]; - ep->u3d = u3d; - strncpy(ep->name, "ep0", sizeof(ep->name)); - ep->ep.name = ep->name; - ep->ep.ops = &mv_u3d_ep_ops; - ep->wedge = 0; - usb_ep_set_maxpacket_limit(&ep->ep, MV_U3D_EP0_MAX_PKT_SIZE); - ep->ep.caps.type_control = true; - ep->ep.caps.dir_in = true; - ep->ep.caps.dir_out = true; - ep->ep_num = 0; - ep->ep.desc = &mv_u3d_ep0_desc; - INIT_LIST_HEAD(&ep->queue); - INIT_LIST_HEAD(&ep->req_list); - ep->ep_type = USB_ENDPOINT_XFER_CONTROL; - - /* add ep0 ep_context */ - ep->ep_context = &u3d->ep_context[1]; - - /* initialize other endpoints */ - for (i = 2; i < u3d->max_eps * 2; i++) { - ep = &u3d->eps[i]; - if (i & 1) { - snprintf(name, sizeof(name), "ep%din", i >> 1); - ep->direction = MV_U3D_EP_DIR_IN; - ep->ep.caps.dir_in = true; - } else { - snprintf(name, sizeof(name), "ep%dout", i >> 1); - ep->direction = MV_U3D_EP_DIR_OUT; - ep->ep.caps.dir_out = true; - } - ep->u3d = u3d; - strncpy(ep->name, name, sizeof(ep->name)); - ep->ep.name = ep->name; - - ep->ep.caps.type_iso = true; - ep->ep.caps.type_bulk = true; - ep->ep.caps.type_int = true; - - ep->ep.ops = &mv_u3d_ep_ops; - usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); - ep->ep_num = i / 2; - - INIT_LIST_HEAD(&ep->queue); - list_add_tail(&ep->ep.ep_list, &u3d->gadget.ep_list); - - INIT_LIST_HEAD(&ep->req_list); - spin_lock_init(&ep->req_lock); - ep->ep_context = &u3d->ep_context[i]; - } - - return 0; -} - -/* delete all endpoint requests, called with spinlock held */ -static void mv_u3d_nuke(struct mv_u3d_ep *ep, int status) -{ - /* endpoint fifo flush */ - mv_u3d_ep_fifo_flush(&ep->ep); - - while (!list_empty(&ep->queue)) { - struct mv_u3d_req *req = NULL; - req = list_entry(ep->queue.next, struct mv_u3d_req, queue); - mv_u3d_done(ep, req, status); - } -} - -/* stop all USB activities */ -static -void mv_u3d_stop_activity(struct mv_u3d *u3d, struct usb_gadget_driver *driver) -{ - struct mv_u3d_ep *ep; - - mv_u3d_nuke(&u3d->eps[1], -ESHUTDOWN); - - list_for_each_entry(ep, &u3d->gadget.ep_list, ep.ep_list) { - mv_u3d_nuke(ep, -ESHUTDOWN); - } - - /* report disconnect; the driver is already quiesced */ - if (driver) { - spin_unlock(&u3d->lock); - driver->disconnect(&u3d->gadget); - spin_lock(&u3d->lock); - } -} - -static void mv_u3d_irq_process_error(struct mv_u3d *u3d) -{ - /* Increment the error count */ - u3d->errors++; - dev_err(u3d->dev, "%s\n", __func__); -} - -static void mv_u3d_irq_process_link_change(struct mv_u3d *u3d) -{ - u32 linkchange; - - linkchange = ioread32(&u3d->vuc_regs->linkchange); - iowrite32(linkchange, &u3d->vuc_regs->linkchange); - - dev_dbg(u3d->dev, "linkchange: 0x%x\n", linkchange); - - if (linkchange & MV_U3D_LINK_CHANGE_LINK_UP) { - dev_dbg(u3d->dev, "link up: ltssm state: 0x%x\n", - ioread32(&u3d->vuc_regs->ltssmstate)); - - u3d->usb_state = USB_STATE_DEFAULT; - u3d->ep0_dir = MV_U3D_EP_DIR_OUT; - u3d->ep0_state = MV_U3D_WAIT_FOR_SETUP; - - /* set speed */ - u3d->gadget.speed = USB_SPEED_SUPER; - } - - if (linkchange & MV_U3D_LINK_CHANGE_SUSPEND) { - dev_dbg(u3d->dev, "link suspend\n"); - u3d->resume_state = u3d->usb_state; - u3d->usb_state = USB_STATE_SUSPENDED; - } - - if (linkchange & MV_U3D_LINK_CHANGE_RESUME) { - dev_dbg(u3d->dev, "link resume\n"); - u3d->usb_state = u3d->resume_state; - u3d->resume_state = 0; - } - - if (linkchange & MV_U3D_LINK_CHANGE_WRESET) { - dev_dbg(u3d->dev, "warm reset\n"); - u3d->usb_state = USB_STATE_POWERED; - } - - if (linkchange & MV_U3D_LINK_CHANGE_HRESET) { - dev_dbg(u3d->dev, "hot reset\n"); - u3d->usb_state = USB_STATE_DEFAULT; - } - - if (linkchange & MV_U3D_LINK_CHANGE_INACT) - dev_dbg(u3d->dev, "inactive\n"); - - if (linkchange & MV_U3D_LINK_CHANGE_DISABLE_AFTER_U0) - dev_dbg(u3d->dev, "ss.disabled\n"); - - if (linkchange & MV_U3D_LINK_CHANGE_VBUS_INVALID) { - dev_dbg(u3d->dev, "vbus invalid\n"); - u3d->usb_state = USB_STATE_ATTACHED; - u3d->vbus_valid_detect = 1; - /* if external vbus detect is not supported, - * we handle it here. - */ - if (!u3d->vbus) { - spin_unlock(&u3d->lock); - mv_u3d_vbus_session(&u3d->gadget, 0); - spin_lock(&u3d->lock); - } - } -} - -static void mv_u3d_ch9setaddress(struct mv_u3d *u3d, - struct usb_ctrlrequest *setup) -{ - u32 tmp; - - if (u3d->usb_state != USB_STATE_DEFAULT) { - dev_err(u3d->dev, - "%s, cannot setaddr in this state (%d)\n", - __func__, u3d->usb_state); - goto err; - } - - u3d->dev_addr = (u8)setup->wValue; - - dev_dbg(u3d->dev, "%s: 0x%x\n", __func__, u3d->dev_addr); - - if (u3d->dev_addr > 127) { - dev_err(u3d->dev, - "%s, u3d address is wrong (out of range)\n", __func__); - u3d->dev_addr = 0; - goto err; - } - - /* update usb state */ - u3d->usb_state = USB_STATE_ADDRESS; - - /* set the new address */ - tmp = ioread32(&u3d->vuc_regs->devaddrtiebrkr); - tmp &= ~0x7F; - tmp |= (u32)u3d->dev_addr; - iowrite32(tmp, &u3d->vuc_regs->devaddrtiebrkr); - - return; -err: - mv_u3d_ep0_stall(u3d); -} - -static int mv_u3d_is_set_configuration(struct usb_ctrlrequest *setup) -{ - if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) - if (setup->bRequest == USB_REQ_SET_CONFIGURATION) - return 1; - - return 0; -} - -static void mv_u3d_handle_setup_packet(struct mv_u3d *u3d, u8 ep_num, - struct usb_ctrlrequest *setup) - __releases(&u3c->lock) - __acquires(&u3c->lock) -{ - bool delegate = false; - - mv_u3d_nuke(&u3d->eps[ep_num * 2 + MV_U3D_EP_DIR_IN], -ESHUTDOWN); - - dev_dbg(u3d->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", - setup->bRequestType, setup->bRequest, - setup->wValue, setup->wIndex, setup->wLength); - - /* We process some stardard setup requests here */ - if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - switch (setup->bRequest) { - case USB_REQ_GET_STATUS: - delegate = true; - break; - - case USB_REQ_SET_ADDRESS: - mv_u3d_ch9setaddress(u3d, setup); - break; - - case USB_REQ_CLEAR_FEATURE: - delegate = true; - break; - - case USB_REQ_SET_FEATURE: - delegate = true; - break; - - default: - delegate = true; - } - } else - delegate = true; - - /* delegate USB standard requests to the gadget driver */ - if (delegate) { - /* USB requests handled by gadget */ - if (setup->wLength) { - /* DATA phase from gadget, STATUS phase from u3d */ - u3d->ep0_dir = (setup->bRequestType & USB_DIR_IN) - ? MV_U3D_EP_DIR_IN : MV_U3D_EP_DIR_OUT; - spin_unlock(&u3d->lock); - if (u3d->driver->setup(&u3d->gadget, - &u3d->local_setup_buff) < 0) { - dev_err(u3d->dev, "setup error!\n"); - mv_u3d_ep0_stall(u3d); - } - spin_lock(&u3d->lock); - } else { - /* no DATA phase, STATUS phase from gadget */ - u3d->ep0_dir = MV_U3D_EP_DIR_IN; - u3d->ep0_state = MV_U3D_STATUS_STAGE; - spin_unlock(&u3d->lock); - if (u3d->driver->setup(&u3d->gadget, - &u3d->local_setup_buff) < 0) - mv_u3d_ep0_stall(u3d); - spin_lock(&u3d->lock); - } - - if (mv_u3d_is_set_configuration(setup)) { - dev_dbg(u3d->dev, "u3d configured\n"); - u3d->usb_state = USB_STATE_CONFIGURED; - } - } -} - -static void mv_u3d_get_setup_data(struct mv_u3d *u3d, u8 ep_num, u8 *buffer_ptr) -{ - struct mv_u3d_ep_context *epcontext; - - epcontext = &u3d->ep_context[ep_num * 2 + MV_U3D_EP_DIR_IN]; - - /* Copy the setup packet to local buffer */ - memcpy(buffer_ptr, (u8 *) &epcontext->setup_buffer, 8); -} - -static void mv_u3d_irq_process_setup(struct mv_u3d *u3d) -{ - u32 tmp, i; - /* Process all Setup packet received interrupts */ - tmp = ioread32(&u3d->vuc_regs->setuplock); - if (tmp) { - for (i = 0; i < u3d->max_eps; i++) { - if (tmp & (1 << i)) { - mv_u3d_get_setup_data(u3d, i, - (u8 *)(&u3d->local_setup_buff)); - mv_u3d_handle_setup_packet(u3d, i, - &u3d->local_setup_buff); - } - } - } - - iowrite32(tmp, &u3d->vuc_regs->setuplock); -} - -static void mv_u3d_irq_process_tr_complete(struct mv_u3d *u3d) -{ - u32 tmp, bit_pos; - int i, ep_num = 0, direction = 0; - struct mv_u3d_ep *curr_ep; - struct mv_u3d_req *curr_req, *temp_req; - int status; - - tmp = ioread32(&u3d->vuc_regs->endcomplete); - - dev_dbg(u3d->dev, "tr_complete: ep: 0x%x\n", tmp); - if (!tmp) - return; - iowrite32(tmp, &u3d->vuc_regs->endcomplete); - - for (i = 0; i < u3d->max_eps * 2; i++) { - ep_num = i >> 1; - direction = i % 2; - - bit_pos = 1 << (ep_num + 16 * direction); - - if (!(bit_pos & tmp)) - continue; - - if (i == 0) - curr_ep = &u3d->eps[1]; - else - curr_ep = &u3d->eps[i]; - - /* remove req out of ep request list after completion */ - dev_dbg(u3d->dev, "tr comp: check req_list\n"); - spin_lock(&curr_ep->req_lock); - if (!list_empty(&curr_ep->req_list)) { - struct mv_u3d_req *req; - req = list_entry(curr_ep->req_list.next, - struct mv_u3d_req, list); - list_del_init(&req->list); - curr_ep->processing = 0; - } - spin_unlock(&curr_ep->req_lock); - - /* process the req queue until an uncomplete request */ - list_for_each_entry_safe(curr_req, temp_req, - &curr_ep->queue, queue) { - status = mv_u3d_process_ep_req(u3d, i, curr_req); - if (status) - break; - /* write back status to req */ - curr_req->req.status = status; - - /* ep0 request completion */ - if (ep_num == 0) { - mv_u3d_done(curr_ep, curr_req, 0); - break; - } else { - mv_u3d_done(curr_ep, curr_req, status); - } - } - - dev_dbg(u3d->dev, "call mv_u3d_start_queue from ep complete\n"); - mv_u3d_start_queue(curr_ep); - } -} - -static irqreturn_t mv_u3d_irq(int irq, void *dev) -{ - struct mv_u3d *u3d = (struct mv_u3d *)dev; - u32 status, intr; - u32 bridgesetting; - u32 trbunderrun; - - spin_lock(&u3d->lock); - - status = ioread32(&u3d->vuc_regs->intrcause); - intr = ioread32(&u3d->vuc_regs->intrenable); - status &= intr; - - if (status == 0) { - spin_unlock(&u3d->lock); - dev_err(u3d->dev, "irq error!\n"); - return IRQ_NONE; - } - - if (status & MV_U3D_USBINT_VBUS_VALID) { - bridgesetting = ioread32(&u3d->vuc_regs->bridgesetting); - if (bridgesetting & MV_U3D_BRIDGE_SETTING_VBUS_VALID) { - /* write vbus valid bit of bridge setting to clear */ - bridgesetting = MV_U3D_BRIDGE_SETTING_VBUS_VALID; - iowrite32(bridgesetting, &u3d->vuc_regs->bridgesetting); - dev_dbg(u3d->dev, "vbus valid\n"); - - u3d->usb_state = USB_STATE_POWERED; - u3d->vbus_valid_detect = 0; - /* if external vbus detect is not supported, - * we handle it here. - */ - if (!u3d->vbus) { - spin_unlock(&u3d->lock); - mv_u3d_vbus_session(&u3d->gadget, 1); - spin_lock(&u3d->lock); - } - } else - dev_err(u3d->dev, "vbus bit is not set\n"); - } - - /* RX data is already in the 16KB FIFO.*/ - if (status & MV_U3D_USBINT_UNDER_RUN) { - trbunderrun = ioread32(&u3d->vuc_regs->trbunderrun); - dev_err(u3d->dev, "under run, ep%d\n", trbunderrun); - iowrite32(trbunderrun, &u3d->vuc_regs->trbunderrun); - mv_u3d_irq_process_error(u3d); - } - - if (status & (MV_U3D_USBINT_RXDESC_ERR | MV_U3D_USBINT_TXDESC_ERR)) { - /* write one to clear */ - iowrite32(status & (MV_U3D_USBINT_RXDESC_ERR - | MV_U3D_USBINT_TXDESC_ERR), - &u3d->vuc_regs->intrcause); - dev_err(u3d->dev, "desc err 0x%x\n", status); - mv_u3d_irq_process_error(u3d); - } - - if (status & MV_U3D_USBINT_LINK_CHG) - mv_u3d_irq_process_link_change(u3d); - - if (status & MV_U3D_USBINT_TX_COMPLETE) - mv_u3d_irq_process_tr_complete(u3d); - - if (status & MV_U3D_USBINT_RX_COMPLETE) - mv_u3d_irq_process_tr_complete(u3d); - - if (status & MV_U3D_USBINT_SETUP) - mv_u3d_irq_process_setup(u3d); - - spin_unlock(&u3d->lock); - return IRQ_HANDLED; -} - -static void mv_u3d_remove(struct platform_device *dev) -{ - struct mv_u3d *u3d = platform_get_drvdata(dev); - - BUG_ON(u3d == NULL); - - usb_del_gadget_udc(&u3d->gadget); - - /* free memory allocated in probe */ - dma_pool_destroy(u3d->trb_pool); - - if (u3d->ep_context) - dma_free_coherent(&dev->dev, u3d->ep_context_size, - u3d->ep_context, u3d->ep_context_dma); - - kfree(u3d->eps); - - if (u3d->irq) - free_irq(u3d->irq, u3d); - - if (u3d->cap_regs) - iounmap(u3d->cap_regs); - u3d->cap_regs = NULL; - - kfree(u3d->status_req); - - clk_put(u3d->clk); - - kfree(u3d); -} - -static int mv_u3d_probe(struct platform_device *dev) -{ - struct mv_u3d *u3d = NULL; - struct mv_usb_platform_data *pdata = dev_get_platdata(&dev->dev); - int retval = 0; - struct resource *r; - size_t size; - - if (!dev_get_platdata(&dev->dev)) { - dev_err(&dev->dev, "missing platform_data\n"); - retval = -ENODEV; - goto err_pdata; - } - - u3d = kzalloc(sizeof(*u3d), GFP_KERNEL); - if (!u3d) { - retval = -ENOMEM; - goto err_alloc_private; - } - - spin_lock_init(&u3d->lock); - - platform_set_drvdata(dev, u3d); - - u3d->dev = &dev->dev; - u3d->vbus = pdata->vbus; - - u3d->clk = clk_get(&dev->dev, NULL); - if (IS_ERR(u3d->clk)) { - retval = PTR_ERR(u3d->clk); - goto err_get_clk; - } - - r = platform_get_resource_byname(dev, IORESOURCE_MEM, "capregs"); - if (!r) { - dev_err(&dev->dev, "no I/O memory resource defined\n"); - retval = -ENODEV; - goto err_get_cap_regs; - } - - u3d->cap_regs = (struct mv_u3d_cap_regs __iomem *) - ioremap(r->start, resource_size(r)); - if (!u3d->cap_regs) { - dev_err(&dev->dev, "failed to map I/O memory\n"); - retval = -EBUSY; - goto err_map_cap_regs; - } else { - dev_dbg(&dev->dev, "cap_regs address: 0x%lx/0x%lx\n", - (unsigned long) r->start, - (unsigned long) u3d->cap_regs); - } - - /* we will access controller register, so enable the u3d controller */ - retval = clk_enable(u3d->clk); - if (retval) { - dev_err(&dev->dev, "clk_enable error %d\n", retval); - goto err_u3d_enable; - } - - if (pdata->phy_init) { - retval = pdata->phy_init(u3d->phy_regs); - if (retval) { - dev_err(&dev->dev, "init phy error %d\n", retval); - clk_disable(u3d->clk); - goto err_phy_init; - } - } - - u3d->op_regs = (struct mv_u3d_op_regs __iomem *)(u3d->cap_regs - + MV_U3D_USB3_OP_REGS_OFFSET); - - u3d->vuc_regs = (struct mv_u3d_vuc_regs __iomem *)(u3d->cap_regs - + ioread32(&u3d->cap_regs->vuoff)); - - u3d->max_eps = 16; - - /* - * some platform will use usb to download image, it may not disconnect - * usb gadget before loading kernel. So first stop u3d here. - */ - mv_u3d_controller_stop(u3d); - iowrite32(0xFFFFFFFF, &u3d->vuc_regs->intrcause); - - if (pdata->phy_deinit) - pdata->phy_deinit(u3d->phy_regs); - clk_disable(u3d->clk); - - size = u3d->max_eps * sizeof(struct mv_u3d_ep_context) * 2; - size = (size + MV_U3D_EP_CONTEXT_ALIGNMENT - 1) - & ~(MV_U3D_EP_CONTEXT_ALIGNMENT - 1); - u3d->ep_context = dma_alloc_coherent(&dev->dev, size, - &u3d->ep_context_dma, GFP_KERNEL); - if (!u3d->ep_context) { - dev_err(&dev->dev, "allocate ep context memory failed\n"); - retval = -ENOMEM; - goto err_alloc_ep_context; - } - u3d->ep_context_size = size; - - /* create TRB dma_pool resource */ - u3d->trb_pool = dma_pool_create("u3d_trb", - &dev->dev, - sizeof(struct mv_u3d_trb_hw), - MV_U3D_TRB_ALIGNMENT, - MV_U3D_DMA_BOUNDARY); - - if (!u3d->trb_pool) { - retval = -ENOMEM; - goto err_alloc_trb_pool; - } - - size = u3d->max_eps * sizeof(struct mv_u3d_ep) * 2; - u3d->eps = kzalloc(size, GFP_KERNEL); - if (!u3d->eps) { - retval = -ENOMEM; - goto err_alloc_eps; - } - - /* initialize ep0 status request structure */ - u3d->status_req = kzalloc(sizeof(struct mv_u3d_req) + 8, GFP_KERNEL); - if (!u3d->status_req) { - retval = -ENOMEM; - goto err_alloc_status_req; - } - INIT_LIST_HEAD(&u3d->status_req->queue); - - /* allocate a small amount of memory to get valid address */ - u3d->status_req->req.buf = (char *)u3d->status_req - + sizeof(struct mv_u3d_req); - u3d->status_req->req.dma = virt_to_phys(u3d->status_req->req.buf); - - u3d->resume_state = USB_STATE_NOTATTACHED; - u3d->usb_state = USB_STATE_ATTACHED; - u3d->ep0_dir = MV_U3D_EP_DIR_OUT; - u3d->remote_wakeup = 0; - - r = platform_get_resource(dev, IORESOURCE_IRQ, 0); - if (!r) { - dev_err(&dev->dev, "no IRQ resource defined\n"); - retval = -ENODEV; - goto err_get_irq; - } - u3d->irq = r->start; - - /* initialize gadget structure */ - u3d->gadget.ops = &mv_u3d_ops; /* usb_gadget_ops */ - u3d->gadget.ep0 = &u3d->eps[1].ep; /* gadget ep0 */ - INIT_LIST_HEAD(&u3d->gadget.ep_list); /* ep_list */ - u3d->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ - - /* the "gadget" abstracts/virtualizes the controller */ - u3d->gadget.name = driver_name; /* gadget name */ - - mv_u3d_eps_init(u3d); - - if (request_irq(u3d->irq, mv_u3d_irq, - IRQF_SHARED, driver_name, u3d)) { - u3d->irq = 0; - dev_err(&dev->dev, "Request irq %d for u3d failed\n", - u3d->irq); - retval = -ENODEV; - goto err_request_irq; - } - - /* external vbus detection */ - if (u3d->vbus) { - u3d->clock_gating = 1; - dev_err(&dev->dev, "external vbus detection\n"); - } - - if (!u3d->clock_gating) - u3d->vbus_active = 1; - - /* enable usb3 controller vbus detection */ - u3d->vbus_valid_detect = 1; - - retval = usb_add_gadget_udc(&dev->dev, &u3d->gadget); - if (retval) - goto err_unregister; - - dev_dbg(&dev->dev, "successful probe usb3 device %s clock gating.\n", - u3d->clock_gating ? "with" : "without"); - - return 0; - -err_unregister: - free_irq(u3d->irq, u3d); -err_get_irq: -err_request_irq: - kfree(u3d->status_req); -err_alloc_status_req: - kfree(u3d->eps); -err_alloc_eps: - dma_pool_destroy(u3d->trb_pool); -err_alloc_trb_pool: - dma_free_coherent(&dev->dev, u3d->ep_context_size, - u3d->ep_context, u3d->ep_context_dma); -err_alloc_ep_context: -err_phy_init: -err_u3d_enable: - iounmap(u3d->cap_regs); -err_map_cap_regs: -err_get_cap_regs: - clk_put(u3d->clk); -err_get_clk: - kfree(u3d); -err_alloc_private: -err_pdata: - return retval; -} - -#ifdef CONFIG_PM_SLEEP -static int mv_u3d_suspend(struct device *dev) -{ - struct mv_u3d *u3d = dev_get_drvdata(dev); - - /* - * only cable is unplugged, usb can suspend. - * So do not care about clock_gating == 1, it is handled by - * vbus session. - */ - if (!u3d->clock_gating) { - mv_u3d_controller_stop(u3d); - - spin_lock_irq(&u3d->lock); - /* stop all usb activities */ - mv_u3d_stop_activity(u3d, u3d->driver); - spin_unlock_irq(&u3d->lock); - - mv_u3d_disable(u3d); - } - - return 0; -} - -static int mv_u3d_resume(struct device *dev) -{ - struct mv_u3d *u3d = dev_get_drvdata(dev); - int retval; - - if (!u3d->clock_gating) { - retval = mv_u3d_enable(u3d); - if (retval) - return retval; - - if (u3d->driver && u3d->softconnect) { - mv_u3d_controller_reset(u3d); - mv_u3d_ep0_reset(u3d); - mv_u3d_controller_start(u3d); - } - } - - return 0; -} -#endif - -static SIMPLE_DEV_PM_OPS(mv_u3d_pm_ops, mv_u3d_suspend, mv_u3d_resume); - -static void mv_u3d_shutdown(struct platform_device *dev) -{ - struct mv_u3d *u3d = platform_get_drvdata(dev); - u32 tmp; - - tmp = ioread32(&u3d->op_regs->usbcmd); - tmp &= ~MV_U3D_CMD_RUN_STOP; - iowrite32(tmp, &u3d->op_regs->usbcmd); -} - -static struct platform_driver mv_u3d_driver = { - .probe = mv_u3d_probe, - .remove_new = mv_u3d_remove, - .shutdown = mv_u3d_shutdown, - .driver = { - .name = "mv-u3d", - .pm = &mv_u3d_pm_ops, - }, -}; - -module_platform_driver(mv_u3d_driver); -MODULE_ALIAS("platform:mv-u3d"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Yu Xu <yuxu@marvell.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/udc/mv_udc.h b/drivers/usb/gadget/udc/mv_udc.h deleted file mode 100644 index b3f759c0962c..000000000000 --- a/drivers/usb/gadget/udc/mv_udc.h +++ /dev/null @@ -1,309 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - */ - -#ifndef __MV_UDC_H -#define __MV_UDC_H - -#define VUSBHS_MAX_PORTS 8 - -#define DQH_ALIGNMENT 2048 -#define DTD_ALIGNMENT 64 -#define DMA_BOUNDARY 4096 - -#define EP_DIR_IN 1 -#define EP_DIR_OUT 0 - -#define DMA_ADDR_INVALID (~(dma_addr_t)0) - -#define EP0_MAX_PKT_SIZE 64 -/* ep0 transfer state */ -#define WAIT_FOR_SETUP 0 -#define DATA_STATE_XMIT 1 -#define DATA_STATE_NEED_ZLP 2 -#define WAIT_FOR_OUT_STATUS 3 -#define DATA_STATE_RECV 4 - -#define CAPLENGTH_MASK (0xff) -#define DCCPARAMS_DEN_MASK (0x1f) - -#define HCSPARAMS_PPC (0x10) - -/* Frame Index Register Bit Masks */ -#define USB_FRINDEX_MASKS 0x3fff - -/* Command Register Bit Masks */ -#define USBCMD_RUN_STOP (0x00000001) -#define USBCMD_CTRL_RESET (0x00000002) -#define USBCMD_SETUP_TRIPWIRE_SET (0x00002000) -#define USBCMD_SETUP_TRIPWIRE_CLEAR (~USBCMD_SETUP_TRIPWIRE_SET) - -#define USBCMD_ATDTW_TRIPWIRE_SET (0x00004000) -#define USBCMD_ATDTW_TRIPWIRE_CLEAR (~USBCMD_ATDTW_TRIPWIRE_SET) - -/* bit 15,3,2 are for frame list size */ -#define USBCMD_FRAME_SIZE_1024 (0x00000000) /* 000 */ -#define USBCMD_FRAME_SIZE_512 (0x00000004) /* 001 */ -#define USBCMD_FRAME_SIZE_256 (0x00000008) /* 010 */ -#define USBCMD_FRAME_SIZE_128 (0x0000000C) /* 011 */ -#define USBCMD_FRAME_SIZE_64 (0x00008000) /* 100 */ -#define USBCMD_FRAME_SIZE_32 (0x00008004) /* 101 */ -#define USBCMD_FRAME_SIZE_16 (0x00008008) /* 110 */ -#define USBCMD_FRAME_SIZE_8 (0x0000800C) /* 111 */ - -#define EPCTRL_TX_ALL_MASK (0xFFFF0000) -#define EPCTRL_RX_ALL_MASK (0x0000FFFF) - -#define EPCTRL_TX_DATA_TOGGLE_RST (0x00400000) -#define EPCTRL_TX_EP_STALL (0x00010000) -#define EPCTRL_RX_EP_STALL (0x00000001) -#define EPCTRL_RX_DATA_TOGGLE_RST (0x00000040) -#define EPCTRL_RX_ENABLE (0x00000080) -#define EPCTRL_TX_ENABLE (0x00800000) -#define EPCTRL_CONTROL (0x00000000) -#define EPCTRL_ISOCHRONOUS (0x00040000) -#define EPCTRL_BULK (0x00080000) -#define EPCTRL_INT (0x000C0000) -#define EPCTRL_TX_TYPE (0x000C0000) -#define EPCTRL_RX_TYPE (0x0000000C) -#define EPCTRL_DATA_TOGGLE_INHIBIT (0x00000020) -#define EPCTRL_TX_EP_TYPE_SHIFT (18) -#define EPCTRL_RX_EP_TYPE_SHIFT (2) - -#define EPCOMPLETE_MAX_ENDPOINTS (16) - -/* endpoint list address bit masks */ -#define USB_EP_LIST_ADDRESS_MASK 0xfffff800 - -#define PORTSCX_W1C_BITS 0x2a -#define PORTSCX_PORT_RESET 0x00000100 -#define PORTSCX_PORT_POWER 0x00001000 -#define PORTSCX_FORCE_FULL_SPEED_CONNECT 0x01000000 -#define PORTSCX_PAR_XCVR_SELECT 0xC0000000 -#define PORTSCX_PORT_FORCE_RESUME 0x00000040 -#define PORTSCX_PORT_SUSPEND 0x00000080 -#define PORTSCX_PORT_SPEED_FULL 0x00000000 -#define PORTSCX_PORT_SPEED_LOW 0x04000000 -#define PORTSCX_PORT_SPEED_HIGH 0x08000000 -#define PORTSCX_PORT_SPEED_MASK 0x0C000000 - -/* USB MODE Register Bit Masks */ -#define USBMODE_CTRL_MODE_IDLE 0x00000000 -#define USBMODE_CTRL_MODE_DEVICE 0x00000002 -#define USBMODE_CTRL_MODE_HOST 0x00000003 -#define USBMODE_CTRL_MODE_RSV 0x00000001 -#define USBMODE_SETUP_LOCK_OFF 0x00000008 -#define USBMODE_STREAM_DISABLE 0x00000010 - -/* USB STS Register Bit Masks */ -#define USBSTS_INT 0x00000001 -#define USBSTS_ERR 0x00000002 -#define USBSTS_PORT_CHANGE 0x00000004 -#define USBSTS_FRM_LST_ROLL 0x00000008 -#define USBSTS_SYS_ERR 0x00000010 -#define USBSTS_IAA 0x00000020 -#define USBSTS_RESET 0x00000040 -#define USBSTS_SOF 0x00000080 -#define USBSTS_SUSPEND 0x00000100 -#define USBSTS_HC_HALTED 0x00001000 -#define USBSTS_RCL 0x00002000 -#define USBSTS_PERIODIC_SCHEDULE 0x00004000 -#define USBSTS_ASYNC_SCHEDULE 0x00008000 - - -/* Interrupt Enable Register Bit Masks */ -#define USBINTR_INT_EN (0x00000001) -#define USBINTR_ERR_INT_EN (0x00000002) -#define USBINTR_PORT_CHANGE_DETECT_EN (0x00000004) - -#define USBINTR_ASYNC_ADV_AAE (0x00000020) -#define USBINTR_ASYNC_ADV_AAE_ENABLE (0x00000020) -#define USBINTR_ASYNC_ADV_AAE_DISABLE (0xFFFFFFDF) - -#define USBINTR_RESET_EN (0x00000040) -#define USBINTR_SOF_UFRAME_EN (0x00000080) -#define USBINTR_DEVICE_SUSPEND (0x00000100) - -#define USB_DEVICE_ADDRESS_MASK (0xfe000000) -#define USB_DEVICE_ADDRESS_BIT_SHIFT (25) - -struct mv_cap_regs { - u32 caplength_hciversion; - u32 hcsparams; /* HC structural parameters */ - u32 hccparams; /* HC Capability Parameters*/ - u32 reserved[5]; - u32 dciversion; /* DC version number and reserved 16 bits */ - u32 dccparams; /* DC Capability Parameters */ -}; - -struct mv_op_regs { - u32 usbcmd; /* Command register */ - u32 usbsts; /* Status register */ - u32 usbintr; /* Interrupt enable */ - u32 frindex; /* Frame index */ - u32 reserved1[1]; - u32 deviceaddr; /* Device Address */ - u32 eplistaddr; /* Endpoint List Address */ - u32 ttctrl; /* HOST TT status and control */ - u32 burstsize; /* Programmable Burst Size */ - u32 txfilltuning; /* Host Transmit Pre-Buffer Packet Tuning */ - u32 reserved[4]; - u32 epnak; /* Endpoint NAK */ - u32 epnaken; /* Endpoint NAK Enable */ - u32 configflag; /* Configured Flag register */ - u32 portsc[VUSBHS_MAX_PORTS]; /* Port Status/Control x, x = 1..8 */ - u32 otgsc; - u32 usbmode; /* USB Host/Device mode */ - u32 epsetupstat; /* Endpoint Setup Status */ - u32 epprime; /* Endpoint Initialize */ - u32 epflush; /* Endpoint De-initialize */ - u32 epstatus; /* Endpoint Status */ - u32 epcomplete; /* Endpoint Interrupt On Complete */ - u32 epctrlx[16]; /* Endpoint Control, where x = 0.. 15 */ - u32 mcr; /* Mux Control */ - u32 isr; /* Interrupt Status */ - u32 ier; /* Interrupt Enable */ -}; - -struct mv_udc { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - spinlock_t lock; - struct completion *done; - struct platform_device *dev; - int irq; - - struct mv_cap_regs __iomem *cap_regs; - struct mv_op_regs __iomem *op_regs; - void __iomem *phy_regs; - unsigned int max_eps; - struct mv_dqh *ep_dqh; - size_t ep_dqh_size; - dma_addr_t ep_dqh_dma; - - struct dma_pool *dtd_pool; - struct mv_ep *eps; - - struct mv_dtd *dtd_head; - struct mv_dtd *dtd_tail; - unsigned int dtd_entries; - - struct mv_req *status_req; - struct usb_ctrlrequest local_setup_buff; - - unsigned int resume_state; /* USB state to resume */ - unsigned int usb_state; /* USB current state */ - unsigned int ep0_state; /* Endpoint zero state */ - unsigned int ep0_dir; - - unsigned int dev_addr; - unsigned int test_mode; - - int errors; - unsigned softconnect:1, - vbus_active:1, - remote_wakeup:1, - softconnected:1, - force_fs:1, - clock_gating:1, - active:1, - stopped:1; /* stop bit is setted */ - - struct work_struct vbus_work; - struct workqueue_struct *qwork; - - struct usb_phy *transceiver; - - struct mv_usb_platform_data *pdata; - - /* some SOC has mutiple clock sources for USB*/ - struct clk *clk; -}; - -/* endpoint data structure */ -struct mv_ep { - struct usb_ep ep; - struct mv_udc *udc; - struct list_head queue; - struct mv_dqh *dqh; - u32 direction; - char name[14]; - unsigned stopped:1, - wedge:1, - ep_type:2, - ep_num:8; -}; - -/* request data structure */ -struct mv_req { - struct usb_request req; - struct mv_dtd *dtd, *head, *tail; - struct mv_ep *ep; - struct list_head queue; - unsigned int test_mode; - unsigned dtd_count; - unsigned mapped:1; -}; - -#define EP_QUEUE_HEAD_MULT_POS 30 -#define EP_QUEUE_HEAD_ZLT_SEL 0x20000000 -#define EP_QUEUE_HEAD_MAX_PKT_LEN_POS 16 -#define EP_QUEUE_HEAD_MAX_PKT_LEN(ep_info) (((ep_info)>>16)&0x07ff) -#define EP_QUEUE_HEAD_IOS 0x00008000 -#define EP_QUEUE_HEAD_NEXT_TERMINATE 0x00000001 -#define EP_QUEUE_HEAD_IOC 0x00008000 -#define EP_QUEUE_HEAD_MULTO 0x00000C00 -#define EP_QUEUE_HEAD_STATUS_HALT 0x00000040 -#define EP_QUEUE_HEAD_STATUS_ACTIVE 0x00000080 -#define EP_QUEUE_CURRENT_OFFSET_MASK 0x00000FFF -#define EP_QUEUE_HEAD_NEXT_POINTER_MASK 0xFFFFFFE0 -#define EP_QUEUE_FRINDEX_MASK 0x000007FF -#define EP_MAX_LENGTH_TRANSFER 0x4000 - -struct mv_dqh { - /* Bits 16..26 Bit 15 is Interrupt On Setup */ - u32 max_packet_length; - u32 curr_dtd_ptr; /* Current dTD Pointer */ - u32 next_dtd_ptr; /* Next dTD Pointer */ - /* Total bytes (16..30), IOC (15), INT (8), STS (0-7) */ - u32 size_ioc_int_sts; - u32 buff_ptr0; /* Buffer pointer Page 0 (12-31) */ - u32 buff_ptr1; /* Buffer pointer Page 1 (12-31) */ - u32 buff_ptr2; /* Buffer pointer Page 2 (12-31) */ - u32 buff_ptr3; /* Buffer pointer Page 3 (12-31) */ - u32 buff_ptr4; /* Buffer pointer Page 4 (12-31) */ - u32 reserved1; - /* 8 bytes of setup data that follows the Setup PID */ - u8 setup_buffer[8]; - u32 reserved2[4]; -}; - - -#define DTD_NEXT_TERMINATE (0x00000001) -#define DTD_IOC (0x00008000) -#define DTD_STATUS_ACTIVE (0x00000080) -#define DTD_STATUS_HALTED (0x00000040) -#define DTD_STATUS_DATA_BUFF_ERR (0x00000020) -#define DTD_STATUS_TRANSACTION_ERR (0x00000008) -#define DTD_RESERVED_FIELDS (0x00007F00) -#define DTD_ERROR_MASK (0x68) -#define DTD_ADDR_MASK (0xFFFFFFE0) -#define DTD_PACKET_SIZE 0x7FFF0000 -#define DTD_LENGTH_BIT_POS (16) - -struct mv_dtd { - u32 dtd_next; - u32 size_ioc_sts; - u32 buff_ptr0; /* Buffer pointer Page 0 */ - u32 buff_ptr1; /* Buffer pointer Page 1 */ - u32 buff_ptr2; /* Buffer pointer Page 2 */ - u32 buff_ptr3; /* Buffer pointer Page 3 */ - u32 buff_ptr4; /* Buffer pointer Page 4 */ - u32 scratch_ptr; - /* 32 bytes */ - dma_addr_t td_dma; /* dma address for this td */ - struct mv_dtd *next_dtd_virt; -}; - -#endif diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c deleted file mode 100644 index 79db74e2040b..000000000000 --- a/drivers/usb/gadget/udc/mv_udc_core.c +++ /dev/null @@ -1,2426 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2011 Marvell International Ltd. All rights reserved. - * Author: Chao Xie <chao.xie@marvell.com> - * Neil Zhang <zhangwm@marvell.com> - */ - -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/dma-mapping.h> -#include <linux/dmapool.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/err.h> -#include <linux/timer.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> -#include <linux/usb/otg.h> -#include <linux/pm.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/platform_data/mv_usb.h> -#include <asm/unaligned.h> - -#include "mv_udc.h" - -#define DRIVER_DESC "Marvell PXA USB Device Controller driver" - -#define ep_dir(ep) (((ep)->ep_num == 0) ? \ - ((ep)->udc->ep0_dir) : ((ep)->direction)) - -/* timeout value -- usec */ -#define RESET_TIMEOUT 10000 -#define FLUSH_TIMEOUT 10000 -#define EPSTATUS_TIMEOUT 10000 -#define PRIME_TIMEOUT 10000 -#define READSAFE_TIMEOUT 1000 - -#define LOOPS_USEC_SHIFT 1 -#define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) -#define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) - -static DECLARE_COMPLETION(release_done); - -static const char driver_name[] = "mv_udc"; - -static void nuke(struct mv_ep *ep, int status); -static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver); - -/* for endpoint 0 operations */ -static const struct usb_endpoint_descriptor mv_ep0_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - .wMaxPacketSize = EP0_MAX_PKT_SIZE, -}; - -static void ep0_reset(struct mv_udc *udc) -{ - struct mv_ep *ep; - u32 epctrlx; - int i = 0; - - /* ep0 in and out */ - for (i = 0; i < 2; i++) { - ep = &udc->eps[i]; - ep->udc = udc; - - /* ep0 dQH */ - ep->dqh = &udc->ep_dqh[i]; - - /* configure ep0 endpoint capabilities in dQH */ - ep->dqh->max_packet_length = - (EP0_MAX_PKT_SIZE << EP_QUEUE_HEAD_MAX_PKT_LEN_POS) - | EP_QUEUE_HEAD_IOS; - - ep->dqh->next_dtd_ptr = EP_QUEUE_HEAD_NEXT_TERMINATE; - - epctrlx = readl(&udc->op_regs->epctrlx[0]); - if (i) { /* TX */ - epctrlx |= EPCTRL_TX_ENABLE - | (USB_ENDPOINT_XFER_CONTROL - << EPCTRL_TX_EP_TYPE_SHIFT); - - } else { /* RX */ - epctrlx |= EPCTRL_RX_ENABLE - | (USB_ENDPOINT_XFER_CONTROL - << EPCTRL_RX_EP_TYPE_SHIFT); - } - - writel(epctrlx, &udc->op_regs->epctrlx[0]); - } -} - -/* protocol ep0 stall, will automatically be cleared on new transaction */ -static void ep0_stall(struct mv_udc *udc) -{ - u32 epctrlx; - - /* set TX and RX to stall */ - epctrlx = readl(&udc->op_regs->epctrlx[0]); - epctrlx |= EPCTRL_RX_EP_STALL | EPCTRL_TX_EP_STALL; - writel(epctrlx, &udc->op_regs->epctrlx[0]); - - /* update ep0 state */ - udc->ep0_state = WAIT_FOR_SETUP; - udc->ep0_dir = EP_DIR_OUT; -} - -static int process_ep_req(struct mv_udc *udc, int index, - struct mv_req *curr_req) -{ - struct mv_dtd *curr_dtd; - struct mv_dqh *curr_dqh; - int actual, remaining_length; - int i, direction; - int retval = 0; - u32 errors; - u32 bit_pos; - - curr_dqh = &udc->ep_dqh[index]; - direction = index % 2; - - curr_dtd = curr_req->head; - actual = curr_req->req.length; - - for (i = 0; i < curr_req->dtd_count; i++) { - if (curr_dtd->size_ioc_sts & DTD_STATUS_ACTIVE) { - dev_dbg(&udc->dev->dev, "%s, dTD not completed\n", - udc->eps[index].name); - return 1; - } - - errors = curr_dtd->size_ioc_sts & DTD_ERROR_MASK; - if (!errors) { - remaining_length = - (curr_dtd->size_ioc_sts & DTD_PACKET_SIZE) - >> DTD_LENGTH_BIT_POS; - actual -= remaining_length; - - if (remaining_length) { - if (direction) { - dev_dbg(&udc->dev->dev, - "TX dTD remains data\n"); - retval = -EPROTO; - break; - } else - break; - } - } else { - dev_info(&udc->dev->dev, - "complete_tr error: ep=%d %s: error = 0x%x\n", - index >> 1, direction ? "SEND" : "RECV", - errors); - if (errors & DTD_STATUS_HALTED) { - /* Clear the errors and Halt condition */ - curr_dqh->size_ioc_int_sts &= ~errors; - retval = -EPIPE; - } else if (errors & DTD_STATUS_DATA_BUFF_ERR) { - retval = -EPROTO; - } else if (errors & DTD_STATUS_TRANSACTION_ERR) { - retval = -EILSEQ; - } - } - if (i != curr_req->dtd_count - 1) - curr_dtd = (struct mv_dtd *)curr_dtd->next_dtd_virt; - } - if (retval) - return retval; - - if (direction == EP_DIR_OUT) - bit_pos = 1 << curr_req->ep->ep_num; - else - bit_pos = 1 << (16 + curr_req->ep->ep_num); - - while (curr_dqh->curr_dtd_ptr == curr_dtd->td_dma) { - if (curr_dtd->dtd_next == EP_QUEUE_HEAD_NEXT_TERMINATE) { - while (readl(&udc->op_regs->epstatus) & bit_pos) - udelay(1); - break; - } - udelay(1); - } - - curr_req->req.actual = actual; - - return 0; -} - -/* - * done() - retire a request; caller blocked irqs - * @status : request status to be set, only works when - * request is still in progress. - */ -static void done(struct mv_ep *ep, struct mv_req *req, int status) - __releases(&ep->udc->lock) - __acquires(&ep->udc->lock) -{ - struct mv_udc *udc = NULL; - unsigned char stopped = ep->stopped; - struct mv_dtd *curr_td, *next_td; - int j; - - udc = (struct mv_udc *)ep->udc; - /* Removed the req from fsl_ep->queue */ - list_del_init(&req->queue); - - /* req.status should be set as -EINPROGRESS in ep_queue() */ - if (req->req.status == -EINPROGRESS) - req->req.status = status; - else - status = req->req.status; - - /* Free dtd for the request */ - next_td = req->head; - for (j = 0; j < req->dtd_count; j++) { - curr_td = next_td; - if (j != req->dtd_count - 1) - next_td = curr_td->next_dtd_virt; - dma_pool_free(udc->dtd_pool, curr_td, curr_td->td_dma); - } - - usb_gadget_unmap_request(&udc->gadget, &req->req, ep_dir(ep)); - - if (status && (status != -ESHUTDOWN)) - dev_info(&udc->dev->dev, "complete %s req %p stat %d len %u/%u", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - ep->stopped = 1; - - spin_unlock(&ep->udc->lock); - - usb_gadget_giveback_request(&ep->ep, &req->req); - - spin_lock(&ep->udc->lock); - ep->stopped = stopped; -} - -static int queue_dtd(struct mv_ep *ep, struct mv_req *req) -{ - struct mv_udc *udc; - struct mv_dqh *dqh; - u32 bit_pos, direction; - u32 usbcmd, epstatus; - unsigned int loops; - int retval = 0; - - udc = ep->udc; - direction = ep_dir(ep); - dqh = &(udc->ep_dqh[ep->ep_num * 2 + direction]); - bit_pos = 1 << (((direction == EP_DIR_OUT) ? 0 : 16) + ep->ep_num); - - /* check if the pipe is empty */ - if (!(list_empty(&ep->queue))) { - struct mv_req *lastreq; - lastreq = list_entry(ep->queue.prev, struct mv_req, queue); - lastreq->tail->dtd_next = - req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK; - - wmb(); - - if (readl(&udc->op_regs->epprime) & bit_pos) - goto done; - - loops = LOOPS(READSAFE_TIMEOUT); - while (1) { - /* start with setting the semaphores */ - usbcmd = readl(&udc->op_regs->usbcmd); - usbcmd |= USBCMD_ATDTW_TRIPWIRE_SET; - writel(usbcmd, &udc->op_regs->usbcmd); - - /* read the endpoint status */ - epstatus = readl(&udc->op_regs->epstatus) & bit_pos; - - /* - * Reread the ATDTW semaphore bit to check if it is - * cleared. When hardware see a hazard, it will clear - * the bit or else we remain set to 1 and we can - * proceed with priming of endpoint if not already - * primed. - */ - if (readl(&udc->op_regs->usbcmd) - & USBCMD_ATDTW_TRIPWIRE_SET) - break; - - loops--; - if (loops == 0) { - dev_err(&udc->dev->dev, - "Timeout for ATDTW_TRIPWIRE...\n"); - retval = -ETIME; - goto done; - } - udelay(LOOPS_USEC); - } - - /* Clear the semaphore */ - usbcmd = readl(&udc->op_regs->usbcmd); - usbcmd &= USBCMD_ATDTW_TRIPWIRE_CLEAR; - writel(usbcmd, &udc->op_regs->usbcmd); - - if (epstatus) - goto done; - } - - /* Write dQH next pointer and terminate bit to 0 */ - dqh->next_dtd_ptr = req->head->td_dma - & EP_QUEUE_HEAD_NEXT_POINTER_MASK; - - /* clear active and halt bit, in case set from a previous error */ - dqh->size_ioc_int_sts &= ~(DTD_STATUS_ACTIVE | DTD_STATUS_HALTED); - - /* Ensure that updates to the QH will occur before priming. */ - wmb(); - - /* Prime the Endpoint */ - writel(bit_pos, &udc->op_regs->epprime); - -done: - return retval; -} - -static struct mv_dtd *build_dtd(struct mv_req *req, unsigned *length, - dma_addr_t *dma, int *is_last) -{ - struct mv_dtd *dtd; - struct mv_udc *udc; - struct mv_dqh *dqh; - u32 temp, mult = 0; - - /* how big will this transfer be? */ - if (usb_endpoint_xfer_isoc(req->ep->ep.desc)) { - dqh = req->ep->dqh; - mult = (dqh->max_packet_length >> EP_QUEUE_HEAD_MULT_POS) - & 0x3; - *length = min(req->req.length - req->req.actual, - (unsigned)(mult * req->ep->ep.maxpacket)); - } else - *length = min(req->req.length - req->req.actual, - (unsigned)EP_MAX_LENGTH_TRANSFER); - - udc = req->ep->udc; - - /* - * Be careful that no _GFP_HIGHMEM is set, - * or we can not use dma_to_virt - */ - dtd = dma_pool_alloc(udc->dtd_pool, GFP_ATOMIC, dma); - if (dtd == NULL) - return dtd; - - dtd->td_dma = *dma; - /* initialize buffer page pointers */ - temp = (u32)(req->req.dma + req->req.actual); - dtd->buff_ptr0 = cpu_to_le32(temp); - temp &= ~0xFFF; - dtd->buff_ptr1 = cpu_to_le32(temp + 0x1000); - dtd->buff_ptr2 = cpu_to_le32(temp + 0x2000); - dtd->buff_ptr3 = cpu_to_le32(temp + 0x3000); - dtd->buff_ptr4 = cpu_to_le32(temp + 0x4000); - - req->req.actual += *length; - - /* zlp is needed if req->req.zero is set */ - if (req->req.zero) { - if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) - *is_last = 1; - else - *is_last = 0; - } else if (req->req.length == req->req.actual) - *is_last = 1; - else - *is_last = 0; - - /* Fill in the transfer size; set active bit */ - temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE); - - /* Enable interrupt for the last dtd of a request */ - if (*is_last && !req->req.no_interrupt) - temp |= DTD_IOC; - - temp |= mult << 10; - - dtd->size_ioc_sts = temp; - - mb(); - - return dtd; -} - -/* generate dTD linked list for a request */ -static int req_to_dtd(struct mv_req *req) -{ - unsigned count; - int is_last, is_first = 1; - struct mv_dtd *dtd, *last_dtd = NULL; - dma_addr_t dma; - - do { - dtd = build_dtd(req, &count, &dma, &is_last); - if (dtd == NULL) - return -ENOMEM; - - if (is_first) { - is_first = 0; - req->head = dtd; - } else { - last_dtd->dtd_next = dma; - last_dtd->next_dtd_virt = dtd; - } - last_dtd = dtd; - req->dtd_count++; - } while (!is_last); - - /* set terminate bit to 1 for the last dTD */ - dtd->dtd_next = DTD_NEXT_TERMINATE; - - req->tail = dtd; - - return 0; -} - -static int mv_ep_enable(struct usb_ep *_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct mv_udc *udc; - struct mv_ep *ep; - struct mv_dqh *dqh; - u16 max = 0; - u32 bit_pos, epctrlx, direction; - const unsigned char zlt = 1; - unsigned char ios, mult; - unsigned long flags; - - ep = container_of(_ep, struct mv_ep, ep); - udc = ep->udc; - - if (!_ep || !desc - || desc->bDescriptorType != USB_DT_ENDPOINT) - return -EINVAL; - - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - direction = ep_dir(ep); - max = usb_endpoint_maxp(desc); - - /* - * disable HW zero length termination select - * driver handles zero length packet through req->req.zero - */ - bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num); - - /* Check if the Endpoint is Primed */ - if ((readl(&udc->op_regs->epprime) & bit_pos) - || (readl(&udc->op_regs->epstatus) & bit_pos)) { - dev_info(&udc->dev->dev, - "ep=%d %s: Init ERROR: ENDPTPRIME=0x%x," - " ENDPTSTATUS=0x%x, bit_pos=0x%x\n", - (unsigned)ep->ep_num, direction ? "SEND" : "RECV", - (unsigned)readl(&udc->op_regs->epprime), - (unsigned)readl(&udc->op_regs->epstatus), - (unsigned)bit_pos); - goto en_done; - } - - /* Set the max packet length, interrupt on Setup and Mult fields */ - ios = 0; - mult = 0; - switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: - case USB_ENDPOINT_XFER_INT: - break; - case USB_ENDPOINT_XFER_CONTROL: - ios = 1; - break; - case USB_ENDPOINT_XFER_ISOC: - /* Calculate transactions needed for high bandwidth iso */ - mult = usb_endpoint_maxp_mult(desc); - /* 3 transactions at most */ - if (mult > 3) - goto en_done; - break; - default: - goto en_done; - } - - spin_lock_irqsave(&udc->lock, flags); - /* Get the endpoint queue head address */ - dqh = ep->dqh; - dqh->max_packet_length = (max << EP_QUEUE_HEAD_MAX_PKT_LEN_POS) - | (mult << EP_QUEUE_HEAD_MULT_POS) - | (zlt ? EP_QUEUE_HEAD_ZLT_SEL : 0) - | (ios ? EP_QUEUE_HEAD_IOS : 0); - dqh->next_dtd_ptr = 1; - dqh->size_ioc_int_sts = 0; - - ep->ep.maxpacket = max; - ep->ep.desc = desc; - ep->stopped = 0; - - /* Enable the endpoint for Rx or Tx and set the endpoint type */ - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - if (direction == EP_DIR_IN) { - epctrlx &= ~EPCTRL_TX_ALL_MASK; - epctrlx |= EPCTRL_TX_ENABLE | EPCTRL_TX_DATA_TOGGLE_RST - | ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) - << EPCTRL_TX_EP_TYPE_SHIFT); - } else { - epctrlx &= ~EPCTRL_RX_ALL_MASK; - epctrlx |= EPCTRL_RX_ENABLE | EPCTRL_RX_DATA_TOGGLE_RST - | ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) - << EPCTRL_RX_EP_TYPE_SHIFT); - } - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - - /* - * Implement Guideline (GL# USB-7) The unused endpoint type must - * be programmed to bulk. - */ - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - if ((epctrlx & EPCTRL_RX_ENABLE) == 0) { - epctrlx |= (USB_ENDPOINT_XFER_BULK - << EPCTRL_RX_EP_TYPE_SHIFT); - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - } - - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - if ((epctrlx & EPCTRL_TX_ENABLE) == 0) { - epctrlx |= (USB_ENDPOINT_XFER_BULK - << EPCTRL_TX_EP_TYPE_SHIFT); - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - } - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -en_done: - return -EINVAL; -} - -static int mv_ep_disable(struct usb_ep *_ep) -{ - struct mv_udc *udc; - struct mv_ep *ep; - struct mv_dqh *dqh; - u32 epctrlx, direction; - unsigned long flags; - - ep = container_of(_ep, struct mv_ep, ep); - if ((_ep == NULL) || !ep->ep.desc) - return -EINVAL; - - udc = ep->udc; - - /* Get the endpoint queue head address */ - dqh = ep->dqh; - - spin_lock_irqsave(&udc->lock, flags); - - direction = ep_dir(ep); - - /* Reset the max packet length and the interrupt on Setup */ - dqh->max_packet_length = 0; - - /* Disable the endpoint for Rx or Tx and reset the endpoint type */ - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - epctrlx &= ~((direction == EP_DIR_IN) - ? (EPCTRL_TX_ENABLE | EPCTRL_TX_TYPE) - : (EPCTRL_RX_ENABLE | EPCTRL_RX_TYPE)); - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - - /* nuke all pending requests (does flush) */ - nuke(ep, -ESHUTDOWN); - - ep->ep.desc = NULL; - ep->stopped = 1; - - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; -} - -static struct usb_request * -mv_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) -{ - struct mv_req *req = NULL; - - req = kzalloc(sizeof *req, gfp_flags); - if (!req) - return NULL; - - req->req.dma = DMA_ADDR_INVALID; - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void mv_free_request(struct usb_ep *_ep, struct usb_request *_req) -{ - struct mv_req *req = NULL; - - req = container_of(_req, struct mv_req, req); - - if (_req) - kfree(req); -} - -static void mv_ep_fifo_flush(struct usb_ep *_ep) -{ - struct mv_udc *udc; - u32 bit_pos, direction; - struct mv_ep *ep; - unsigned int loops; - - if (!_ep) - return; - - ep = container_of(_ep, struct mv_ep, ep); - if (!ep->ep.desc) - return; - - udc = ep->udc; - direction = ep_dir(ep); - - if (ep->ep_num == 0) - bit_pos = (1 << 16) | 1; - else if (direction == EP_DIR_OUT) - bit_pos = 1 << ep->ep_num; - else - bit_pos = 1 << (16 + ep->ep_num); - - loops = LOOPS(EPSTATUS_TIMEOUT); - do { - unsigned int inter_loops; - - if (loops == 0) { - dev_err(&udc->dev->dev, - "TIMEOUT for ENDPTSTATUS=0x%x, bit_pos=0x%x\n", - (unsigned)readl(&udc->op_regs->epstatus), - (unsigned)bit_pos); - return; - } - /* Write 1 to the Flush register */ - writel(bit_pos, &udc->op_regs->epflush); - - /* Wait until flushing completed */ - inter_loops = LOOPS(FLUSH_TIMEOUT); - while (readl(&udc->op_regs->epflush)) { - /* - * ENDPTFLUSH bit should be cleared to indicate this - * operation is complete - */ - if (inter_loops == 0) { - dev_err(&udc->dev->dev, - "TIMEOUT for ENDPTFLUSH=0x%x," - "bit_pos=0x%x\n", - (unsigned)readl(&udc->op_regs->epflush), - (unsigned)bit_pos); - return; - } - inter_loops--; - udelay(LOOPS_USEC); - } - loops--; - } while (readl(&udc->op_regs->epstatus) & bit_pos); -} - -/* queues (submits) an I/O request to an endpoint */ -static int -mv_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) -{ - struct mv_ep *ep = container_of(_ep, struct mv_ep, ep); - struct mv_req *req = container_of(_req, struct mv_req, req); - struct mv_udc *udc = ep->udc; - unsigned long flags; - int retval; - - /* catch various bogus parameters */ - if (!_req || !req->req.complete || !req->req.buf - || !list_empty(&req->queue)) { - dev_err(&udc->dev->dev, "%s, bad params", __func__); - return -EINVAL; - } - if (unlikely(!_ep || !ep->ep.desc)) { - dev_err(&udc->dev->dev, "%s, bad ep", __func__); - return -EINVAL; - } - - udc = ep->udc; - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - req->ep = ep; - - /* map virtual address to hardware */ - retval = usb_gadget_map_request(&udc->gadget, _req, ep_dir(ep)); - if (retval) - return retval; - - req->req.status = -EINPROGRESS; - req->req.actual = 0; - req->dtd_count = 0; - - spin_lock_irqsave(&udc->lock, flags); - - /* build dtds and push them to device queue */ - if (!req_to_dtd(req)) { - retval = queue_dtd(ep, req); - if (retval) { - spin_unlock_irqrestore(&udc->lock, flags); - dev_err(&udc->dev->dev, "Failed to queue dtd\n"); - goto err_unmap_dma; - } - } else { - spin_unlock_irqrestore(&udc->lock, flags); - dev_err(&udc->dev->dev, "Failed to dma_pool_alloc\n"); - retval = -ENOMEM; - goto err_unmap_dma; - } - - /* Update ep0 state */ - if (ep->ep_num == 0) - udc->ep0_state = DATA_STATE_XMIT; - - /* irq handler advances the queue */ - list_add_tail(&req->queue, &ep->queue); - spin_unlock_irqrestore(&udc->lock, flags); - - return 0; - -err_unmap_dma: - usb_gadget_unmap_request(&udc->gadget, _req, ep_dir(ep)); - - return retval; -} - -static void mv_prime_ep(struct mv_ep *ep, struct mv_req *req) -{ - struct mv_dqh *dqh = ep->dqh; - u32 bit_pos; - - /* Write dQH next pointer and terminate bit to 0 */ - dqh->next_dtd_ptr = req->head->td_dma - & EP_QUEUE_HEAD_NEXT_POINTER_MASK; - - /* clear active and halt bit, in case set from a previous error */ - dqh->size_ioc_int_sts &= ~(DTD_STATUS_ACTIVE | DTD_STATUS_HALTED); - - /* Ensure that updates to the QH will occure before priming. */ - wmb(); - - bit_pos = 1 << (((ep_dir(ep) == EP_DIR_OUT) ? 0 : 16) + ep->ep_num); - - /* Prime the Endpoint */ - writel(bit_pos, &ep->udc->op_regs->epprime); -} - -/* dequeues (cancels, unlinks) an I/O request from an endpoint */ -static int mv_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct mv_ep *ep = container_of(_ep, struct mv_ep, ep); - struct mv_req *req = NULL, *iter; - struct mv_udc *udc = ep->udc; - unsigned long flags; - int stopped, ret = 0; - u32 epctrlx; - - if (!_ep || !_req) - return -EINVAL; - - spin_lock_irqsave(&ep->udc->lock, flags); - stopped = ep->stopped; - - /* Stop the ep before we deal with the queue */ - ep->stopped = 1; - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - if (ep_dir(ep) == EP_DIR_IN) - epctrlx &= ~EPCTRL_TX_ENABLE; - else - epctrlx &= ~EPCTRL_RX_ENABLE; - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(iter, &ep->queue, queue) { - if (&iter->req != _req) - continue; - req = iter; - break; - } - if (!req) { - ret = -EINVAL; - goto out; - } - - /* The request is in progress, or completed but not dequeued */ - if (ep->queue.next == &req->queue) { - _req->status = -ECONNRESET; - mv_ep_fifo_flush(_ep); /* flush current transfer */ - - /* The request isn't the last request in this ep queue */ - if (req->queue.next != &ep->queue) { - struct mv_req *next_req; - - next_req = list_entry(req->queue.next, - struct mv_req, queue); - - /* Point the QH to the first TD of next request */ - mv_prime_ep(ep, next_req); - } else { - struct mv_dqh *qh; - - qh = ep->dqh; - qh->next_dtd_ptr = 1; - qh->size_ioc_int_sts = 0; - } - - /* The request hasn't been processed, patch up the TD chain */ - } else { - struct mv_req *prev_req; - - prev_req = list_entry(req->queue.prev, struct mv_req, queue); - writel(readl(&req->tail->dtd_next), - &prev_req->tail->dtd_next); - - } - - done(ep, req, -ECONNRESET); - - /* Enable EP */ -out: - epctrlx = readl(&udc->op_regs->epctrlx[ep->ep_num]); - if (ep_dir(ep) == EP_DIR_IN) - epctrlx |= EPCTRL_TX_ENABLE; - else - epctrlx |= EPCTRL_RX_ENABLE; - writel(epctrlx, &udc->op_regs->epctrlx[ep->ep_num]); - ep->stopped = stopped; - - spin_unlock_irqrestore(&ep->udc->lock, flags); - return ret; -} - -static void ep_set_stall(struct mv_udc *udc, u8 ep_num, u8 direction, int stall) -{ - u32 epctrlx; - - epctrlx = readl(&udc->op_regs->epctrlx[ep_num]); - - if (stall) { - if (direction == EP_DIR_IN) - epctrlx |= EPCTRL_TX_EP_STALL; - else - epctrlx |= EPCTRL_RX_EP_STALL; - } else { - if (direction == EP_DIR_IN) { - epctrlx &= ~EPCTRL_TX_EP_STALL; - epctrlx |= EPCTRL_TX_DATA_TOGGLE_RST; - } else { - epctrlx &= ~EPCTRL_RX_EP_STALL; - epctrlx |= EPCTRL_RX_DATA_TOGGLE_RST; - } - } - writel(epctrlx, &udc->op_regs->epctrlx[ep_num]); -} - -static int ep_is_stall(struct mv_udc *udc, u8 ep_num, u8 direction) -{ - u32 epctrlx; - - epctrlx = readl(&udc->op_regs->epctrlx[ep_num]); - - if (direction == EP_DIR_OUT) - return (epctrlx & EPCTRL_RX_EP_STALL) ? 1 : 0; - else - return (epctrlx & EPCTRL_TX_EP_STALL) ? 1 : 0; -} - -static int mv_ep_set_halt_wedge(struct usb_ep *_ep, int halt, int wedge) -{ - struct mv_ep *ep; - unsigned long flags; - int status = 0; - struct mv_udc *udc; - - ep = container_of(_ep, struct mv_ep, ep); - udc = ep->udc; - if (!_ep || !ep->ep.desc) { - status = -EINVAL; - goto out; - } - - if (ep->ep.desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { - status = -EOPNOTSUPP; - goto out; - } - - /* - * Attempt to halt IN ep will fail if any transfer requests - * are still queue - */ - if (halt && (ep_dir(ep) == EP_DIR_IN) && !list_empty(&ep->queue)) { - status = -EAGAIN; - goto out; - } - - spin_lock_irqsave(&ep->udc->lock, flags); - ep_set_stall(udc, ep->ep_num, ep_dir(ep), halt); - if (halt && wedge) - ep->wedge = 1; - else if (!halt) - ep->wedge = 0; - spin_unlock_irqrestore(&ep->udc->lock, flags); - - if (ep->ep_num == 0) { - udc->ep0_state = WAIT_FOR_SETUP; - udc->ep0_dir = EP_DIR_OUT; - } -out: - return status; -} - -static int mv_ep_set_halt(struct usb_ep *_ep, int halt) -{ - return mv_ep_set_halt_wedge(_ep, halt, 0); -} - -static int mv_ep_set_wedge(struct usb_ep *_ep) -{ - return mv_ep_set_halt_wedge(_ep, 1, 1); -} - -static const struct usb_ep_ops mv_ep_ops = { - .enable = mv_ep_enable, - .disable = mv_ep_disable, - - .alloc_request = mv_alloc_request, - .free_request = mv_free_request, - - .queue = mv_ep_queue, - .dequeue = mv_ep_dequeue, - - .set_wedge = mv_ep_set_wedge, - .set_halt = mv_ep_set_halt, - .fifo_flush = mv_ep_fifo_flush, /* flush fifo */ -}; - -static int udc_clock_enable(struct mv_udc *udc) -{ - return clk_prepare_enable(udc->clk); -} - -static void udc_clock_disable(struct mv_udc *udc) -{ - clk_disable_unprepare(udc->clk); -} - -static void udc_stop(struct mv_udc *udc) -{ - u32 tmp; - - /* Disable interrupts */ - tmp = readl(&udc->op_regs->usbintr); - tmp &= ~(USBINTR_INT_EN | USBINTR_ERR_INT_EN | - USBINTR_PORT_CHANGE_DETECT_EN | USBINTR_RESET_EN); - writel(tmp, &udc->op_regs->usbintr); - - udc->stopped = 1; - - /* Reset the Run the bit in the command register to stop VUSB */ - tmp = readl(&udc->op_regs->usbcmd); - tmp &= ~USBCMD_RUN_STOP; - writel(tmp, &udc->op_regs->usbcmd); -} - -static void udc_start(struct mv_udc *udc) -{ - u32 usbintr; - - usbintr = USBINTR_INT_EN | USBINTR_ERR_INT_EN - | USBINTR_PORT_CHANGE_DETECT_EN - | USBINTR_RESET_EN | USBINTR_DEVICE_SUSPEND; - /* Enable interrupts */ - writel(usbintr, &udc->op_regs->usbintr); - - udc->stopped = 0; - - /* Set the Run bit in the command register */ - writel(USBCMD_RUN_STOP, &udc->op_regs->usbcmd); -} - -static int udc_reset(struct mv_udc *udc) -{ - unsigned int loops; - u32 tmp, portsc; - - /* Stop the controller */ - tmp = readl(&udc->op_regs->usbcmd); - tmp &= ~USBCMD_RUN_STOP; - writel(tmp, &udc->op_regs->usbcmd); - - /* Reset the controller to get default values */ - writel(USBCMD_CTRL_RESET, &udc->op_regs->usbcmd); - - /* wait for reset to complete */ - loops = LOOPS(RESET_TIMEOUT); - while (readl(&udc->op_regs->usbcmd) & USBCMD_CTRL_RESET) { - if (loops == 0) { - dev_err(&udc->dev->dev, - "Wait for RESET completed TIMEOUT\n"); - return -ETIMEDOUT; - } - loops--; - udelay(LOOPS_USEC); - } - - /* set controller to device mode */ - tmp = readl(&udc->op_regs->usbmode); - tmp |= USBMODE_CTRL_MODE_DEVICE; - - /* turn setup lockout off, require setup tripwire in usbcmd */ - tmp |= USBMODE_SETUP_LOCK_OFF; - - writel(tmp, &udc->op_regs->usbmode); - - writel(0x0, &udc->op_regs->epsetupstat); - - /* Configure the Endpoint List Address */ - writel(udc->ep_dqh_dma & USB_EP_LIST_ADDRESS_MASK, - &udc->op_regs->eplistaddr); - - portsc = readl(&udc->op_regs->portsc[0]); - if (readl(&udc->cap_regs->hcsparams) & HCSPARAMS_PPC) - portsc &= (~PORTSCX_W1C_BITS | ~PORTSCX_PORT_POWER); - - if (udc->force_fs) - portsc |= PORTSCX_FORCE_FULL_SPEED_CONNECT; - else - portsc &= (~PORTSCX_FORCE_FULL_SPEED_CONNECT); - - writel(portsc, &udc->op_regs->portsc[0]); - - tmp = readl(&udc->op_regs->epctrlx[0]); - tmp &= ~(EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL); - writel(tmp, &udc->op_regs->epctrlx[0]); - - return 0; -} - -static int mv_udc_enable_internal(struct mv_udc *udc) -{ - int retval; - - if (udc->active) - return 0; - - dev_dbg(&udc->dev->dev, "enable udc\n"); - retval = udc_clock_enable(udc); - if (retval) - return retval; - - if (udc->pdata->phy_init) { - retval = udc->pdata->phy_init(udc->phy_regs); - if (retval) { - dev_err(&udc->dev->dev, - "init phy error %d\n", retval); - udc_clock_disable(udc); - return retval; - } - } - udc->active = 1; - - return 0; -} - -static int mv_udc_enable(struct mv_udc *udc) -{ - if (udc->clock_gating) - return mv_udc_enable_internal(udc); - - return 0; -} - -static void mv_udc_disable_internal(struct mv_udc *udc) -{ - if (udc->active) { - dev_dbg(&udc->dev->dev, "disable udc\n"); - if (udc->pdata->phy_deinit) - udc->pdata->phy_deinit(udc->phy_regs); - udc_clock_disable(udc); - udc->active = 0; - } -} - -static void mv_udc_disable(struct mv_udc *udc) -{ - if (udc->clock_gating) - mv_udc_disable_internal(udc); -} - -static int mv_udc_get_frame(struct usb_gadget *gadget) -{ - struct mv_udc *udc; - u16 retval; - - if (!gadget) - return -ENODEV; - - udc = container_of(gadget, struct mv_udc, gadget); - - retval = readl(&udc->op_regs->frindex) & USB_FRINDEX_MASKS; - - return retval; -} - -/* Tries to wake up the host connected to this gadget */ -static int mv_udc_wakeup(struct usb_gadget *gadget) -{ - struct mv_udc *udc = container_of(gadget, struct mv_udc, gadget); - u32 portsc; - - /* Remote wakeup feature not enabled by host */ - if (!udc->remote_wakeup) - return -ENOTSUPP; - - portsc = readl(&udc->op_regs->portsc); - /* not suspended? */ - if (!(portsc & PORTSCX_PORT_SUSPEND)) - return 0; - /* trigger force resume */ - portsc |= PORTSCX_PORT_FORCE_RESUME; - writel(portsc, &udc->op_regs->portsc[0]); - return 0; -} - -static int mv_udc_vbus_session(struct usb_gadget *gadget, int is_active) -{ - struct mv_udc *udc; - unsigned long flags; - int retval = 0; - - udc = container_of(gadget, struct mv_udc, gadget); - spin_lock_irqsave(&udc->lock, flags); - - udc->vbus_active = (is_active != 0); - - dev_dbg(&udc->dev->dev, "%s: softconnect %d, vbus_active %d\n", - __func__, udc->softconnect, udc->vbus_active); - - if (udc->driver && udc->softconnect && udc->vbus_active) { - retval = mv_udc_enable(udc); - if (retval == 0) { - /* Clock is disabled, need re-init registers */ - udc_reset(udc); - ep0_reset(udc); - udc_start(udc); - } - } else if (udc->driver && udc->softconnect) { - if (!udc->active) - goto out; - - /* stop all the transfer in queue*/ - stop_activity(udc, udc->driver); - udc_stop(udc); - mv_udc_disable(udc); - } - -out: - spin_unlock_irqrestore(&udc->lock, flags); - return retval; -} - -static int mv_udc_pullup(struct usb_gadget *gadget, int is_on) -{ - struct mv_udc *udc; - unsigned long flags; - int retval = 0; - - udc = container_of(gadget, struct mv_udc, gadget); - spin_lock_irqsave(&udc->lock, flags); - - udc->softconnect = (is_on != 0); - - dev_dbg(&udc->dev->dev, "%s: softconnect %d, vbus_active %d\n", - __func__, udc->softconnect, udc->vbus_active); - - if (udc->driver && udc->softconnect && udc->vbus_active) { - retval = mv_udc_enable(udc); - if (retval == 0) { - /* Clock is disabled, need re-init registers */ - udc_reset(udc); - ep0_reset(udc); - udc_start(udc); - } - } else if (udc->driver && udc->vbus_active) { - /* stop all the transfer in queue*/ - stop_activity(udc, udc->driver); - udc_stop(udc); - mv_udc_disable(udc); - } - - spin_unlock_irqrestore(&udc->lock, flags); - return retval; -} - -static int mv_udc_start(struct usb_gadget *, struct usb_gadget_driver *); -static int mv_udc_stop(struct usb_gadget *); -/* device controller usb_gadget_ops structure */ -static const struct usb_gadget_ops mv_ops = { - - /* returns the current frame number */ - .get_frame = mv_udc_get_frame, - - /* tries to wake up the host connected to this gadget */ - .wakeup = mv_udc_wakeup, - - /* notify controller that VBUS is powered or not */ - .vbus_session = mv_udc_vbus_session, - - /* D+ pullup, software-controlled connect/disconnect to USB host */ - .pullup = mv_udc_pullup, - .udc_start = mv_udc_start, - .udc_stop = mv_udc_stop, -}; - -static int eps_init(struct mv_udc *udc) -{ - struct mv_ep *ep; - char name[14]; - int i; - - /* initialize ep0 */ - ep = &udc->eps[0]; - ep->udc = udc; - strncpy(ep->name, "ep0", sizeof(ep->name)); - ep->ep.name = ep->name; - ep->ep.ops = &mv_ep_ops; - ep->wedge = 0; - ep->stopped = 0; - usb_ep_set_maxpacket_limit(&ep->ep, EP0_MAX_PKT_SIZE); - ep->ep.caps.type_control = true; - ep->ep.caps.dir_in = true; - ep->ep.caps.dir_out = true; - ep->ep_num = 0; - ep->ep.desc = &mv_ep0_desc; - INIT_LIST_HEAD(&ep->queue); - - ep->ep_type = USB_ENDPOINT_XFER_CONTROL; - - /* initialize other endpoints */ - for (i = 2; i < udc->max_eps * 2; i++) { - ep = &udc->eps[i]; - if (i % 2) { - snprintf(name, sizeof(name), "ep%din", i / 2); - ep->direction = EP_DIR_IN; - ep->ep.caps.dir_in = true; - } else { - snprintf(name, sizeof(name), "ep%dout", i / 2); - ep->direction = EP_DIR_OUT; - ep->ep.caps.dir_out = true; - } - ep->udc = udc; - strncpy(ep->name, name, sizeof(ep->name)); - ep->ep.name = ep->name; - - ep->ep.caps.type_iso = true; - ep->ep.caps.type_bulk = true; - ep->ep.caps.type_int = true; - - ep->ep.ops = &mv_ep_ops; - ep->stopped = 0; - usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); - ep->ep_num = i / 2; - - INIT_LIST_HEAD(&ep->queue); - list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); - - ep->dqh = &udc->ep_dqh[i]; - } - - return 0; -} - -/* delete all endpoint requests, called with spinlock held */ -static void nuke(struct mv_ep *ep, int status) -{ - /* called with spinlock held */ - ep->stopped = 1; - - /* endpoint fifo flush */ - mv_ep_fifo_flush(&ep->ep); - - while (!list_empty(&ep->queue)) { - struct mv_req *req = NULL; - req = list_entry(ep->queue.next, struct mv_req, queue); - done(ep, req, status); - } -} - -static void gadget_reset(struct mv_udc *udc, struct usb_gadget_driver *driver) -{ - struct mv_ep *ep; - - nuke(&udc->eps[0], -ESHUTDOWN); - - list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - nuke(ep, -ESHUTDOWN); - } - - /* report reset; the driver is already quiesced */ - if (driver) { - spin_unlock(&udc->lock); - usb_gadget_udc_reset(&udc->gadget, driver); - spin_lock(&udc->lock); - } -} -/* stop all USB activities */ -static void stop_activity(struct mv_udc *udc, struct usb_gadget_driver *driver) -{ - struct mv_ep *ep; - - nuke(&udc->eps[0], -ESHUTDOWN); - - list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - nuke(ep, -ESHUTDOWN); - } - - /* report disconnect; the driver is already quiesced */ - if (driver) { - spin_unlock(&udc->lock); - driver->disconnect(&udc->gadget); - spin_lock(&udc->lock); - } -} - -static int mv_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct mv_udc *udc; - int retval = 0; - unsigned long flags; - - udc = container_of(gadget, struct mv_udc, gadget); - - if (udc->driver) - return -EBUSY; - - spin_lock_irqsave(&udc->lock, flags); - - /* hook up the driver ... */ - udc->driver = driver; - - udc->usb_state = USB_STATE_ATTACHED; - udc->ep0_state = WAIT_FOR_SETUP; - udc->ep0_dir = EP_DIR_OUT; - - spin_unlock_irqrestore(&udc->lock, flags); - - if (udc->transceiver) { - retval = otg_set_peripheral(udc->transceiver->otg, - &udc->gadget); - if (retval) { - dev_err(&udc->dev->dev, - "unable to register peripheral to otg\n"); - udc->driver = NULL; - return retval; - } - } - - /* When boot with cable attached, there will be no vbus irq occurred */ - if (udc->qwork) - queue_work(udc->qwork, &udc->vbus_work); - - return 0; -} - -static int mv_udc_stop(struct usb_gadget *gadget) -{ - struct mv_udc *udc; - unsigned long flags; - - udc = container_of(gadget, struct mv_udc, gadget); - - spin_lock_irqsave(&udc->lock, flags); - - mv_udc_enable(udc); - udc_stop(udc); - - /* stop all usb activities */ - udc->gadget.speed = USB_SPEED_UNKNOWN; - stop_activity(udc, NULL); - mv_udc_disable(udc); - - spin_unlock_irqrestore(&udc->lock, flags); - - /* unbind gadget driver */ - udc->driver = NULL; - - return 0; -} - -static void mv_set_ptc(struct mv_udc *udc, u32 mode) -{ - u32 portsc; - - portsc = readl(&udc->op_regs->portsc[0]); - portsc |= mode << 16; - writel(portsc, &udc->op_regs->portsc[0]); -} - -static void prime_status_complete(struct usb_ep *ep, struct usb_request *_req) -{ - struct mv_ep *mvep = container_of(ep, struct mv_ep, ep); - struct mv_req *req = container_of(_req, struct mv_req, req); - struct mv_udc *udc; - unsigned long flags; - - udc = mvep->udc; - - dev_info(&udc->dev->dev, "switch to test mode %d\n", req->test_mode); - - spin_lock_irqsave(&udc->lock, flags); - if (req->test_mode) { - mv_set_ptc(udc, req->test_mode); - req->test_mode = 0; - } - spin_unlock_irqrestore(&udc->lock, flags); -} - -static int -udc_prime_status(struct mv_udc *udc, u8 direction, u16 status, bool empty) -{ - int retval = 0; - struct mv_req *req; - struct mv_ep *ep; - - ep = &udc->eps[0]; - udc->ep0_dir = direction; - udc->ep0_state = WAIT_FOR_OUT_STATUS; - - req = udc->status_req; - - /* fill in the reqest structure */ - if (empty == false) { - *((u16 *) req->req.buf) = cpu_to_le16(status); - req->req.length = 2; - } else - req->req.length = 0; - - req->ep = ep; - req->req.status = -EINPROGRESS; - req->req.actual = 0; - if (udc->test_mode) { - req->req.complete = prime_status_complete; - req->test_mode = udc->test_mode; - udc->test_mode = 0; - } else - req->req.complete = NULL; - req->dtd_count = 0; - - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, req->req.length, - ep_dir(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); - req->mapped = 1; - } - - /* prime the data phase */ - if (!req_to_dtd(req)) { - retval = queue_dtd(ep, req); - if (retval) { - dev_err(&udc->dev->dev, - "Failed to queue dtd when prime status\n"); - goto out; - } - } else{ /* no mem */ - retval = -ENOMEM; - dev_err(&udc->dev->dev, - "Failed to dma_pool_alloc when prime status\n"); - goto out; - } - - list_add_tail(&req->queue, &ep->queue); - - return 0; -out: - usb_gadget_unmap_request(&udc->gadget, &req->req, ep_dir(ep)); - - return retval; -} - -static void mv_udc_testmode(struct mv_udc *udc, u16 index) -{ - if (index <= USB_TEST_FORCE_ENABLE) { - udc->test_mode = index; - if (udc_prime_status(udc, EP_DIR_IN, 0, true)) - ep0_stall(udc); - } else - dev_err(&udc->dev->dev, - "This test mode(%d) is not supported\n", index); -} - -static void ch9setaddress(struct mv_udc *udc, struct usb_ctrlrequest *setup) -{ - udc->dev_addr = (u8)setup->wValue; - - /* update usb state */ - udc->usb_state = USB_STATE_ADDRESS; - - if (udc_prime_status(udc, EP_DIR_IN, 0, true)) - ep0_stall(udc); -} - -static void ch9getstatus(struct mv_udc *udc, u8 ep_num, - struct usb_ctrlrequest *setup) -{ - u16 status = 0; - int retval; - - if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) - != (USB_DIR_IN | USB_TYPE_STANDARD)) - return; - - if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) { - status = 1 << USB_DEVICE_SELF_POWERED; - status |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP; - } else if ((setup->bRequestType & USB_RECIP_MASK) - == USB_RECIP_INTERFACE) { - /* get interface status */ - status = 0; - } else if ((setup->bRequestType & USB_RECIP_MASK) - == USB_RECIP_ENDPOINT) { - u8 ep_num, direction; - - ep_num = setup->wIndex & USB_ENDPOINT_NUMBER_MASK; - direction = (setup->wIndex & USB_ENDPOINT_DIR_MASK) - ? EP_DIR_IN : EP_DIR_OUT; - status = ep_is_stall(udc, ep_num, direction) - << USB_ENDPOINT_HALT; - } - - retval = udc_prime_status(udc, EP_DIR_IN, status, false); - if (retval) - ep0_stall(udc); - else - udc->ep0_state = DATA_STATE_XMIT; -} - -static void ch9clearfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup) -{ - u8 ep_num; - u8 direction; - struct mv_ep *ep; - - if ((setup->bRequestType & (USB_TYPE_MASK | USB_RECIP_MASK)) - == ((USB_TYPE_STANDARD | USB_RECIP_DEVICE))) { - switch (setup->wValue) { - case USB_DEVICE_REMOTE_WAKEUP: - udc->remote_wakeup = 0; - break; - default: - goto out; - } - } else if ((setup->bRequestType & (USB_TYPE_MASK | USB_RECIP_MASK)) - == ((USB_TYPE_STANDARD | USB_RECIP_ENDPOINT))) { - switch (setup->wValue) { - case USB_ENDPOINT_HALT: - ep_num = setup->wIndex & USB_ENDPOINT_NUMBER_MASK; - direction = (setup->wIndex & USB_ENDPOINT_DIR_MASK) - ? EP_DIR_IN : EP_DIR_OUT; - if (setup->wValue != 0 || setup->wLength != 0 - || ep_num > udc->max_eps) - goto out; - ep = &udc->eps[ep_num * 2 + direction]; - if (ep->wedge == 1) - break; - spin_unlock(&udc->lock); - ep_set_stall(udc, ep_num, direction, 0); - spin_lock(&udc->lock); - break; - default: - goto out; - } - } else - goto out; - - if (udc_prime_status(udc, EP_DIR_IN, 0, true)) - ep0_stall(udc); -out: - return; -} - -static void ch9setfeature(struct mv_udc *udc, struct usb_ctrlrequest *setup) -{ - u8 ep_num; - u8 direction; - - if ((setup->bRequestType & (USB_TYPE_MASK | USB_RECIP_MASK)) - == ((USB_TYPE_STANDARD | USB_RECIP_DEVICE))) { - switch (setup->wValue) { - case USB_DEVICE_REMOTE_WAKEUP: - udc->remote_wakeup = 1; - break; - case USB_DEVICE_TEST_MODE: - if (setup->wIndex & 0xFF - || udc->gadget.speed != USB_SPEED_HIGH) - ep0_stall(udc); - - if (udc->usb_state != USB_STATE_CONFIGURED - && udc->usb_state != USB_STATE_ADDRESS - && udc->usb_state != USB_STATE_DEFAULT) - ep0_stall(udc); - - mv_udc_testmode(udc, (setup->wIndex >> 8)); - goto out; - default: - goto out; - } - } else if ((setup->bRequestType & (USB_TYPE_MASK | USB_RECIP_MASK)) - == ((USB_TYPE_STANDARD | USB_RECIP_ENDPOINT))) { - switch (setup->wValue) { - case USB_ENDPOINT_HALT: - ep_num = setup->wIndex & USB_ENDPOINT_NUMBER_MASK; - direction = (setup->wIndex & USB_ENDPOINT_DIR_MASK) - ? EP_DIR_IN : EP_DIR_OUT; - if (setup->wValue != 0 || setup->wLength != 0 - || ep_num > udc->max_eps) - goto out; - spin_unlock(&udc->lock); - ep_set_stall(udc, ep_num, direction, 1); - spin_lock(&udc->lock); - break; - default: - goto out; - } - } else - goto out; - - if (udc_prime_status(udc, EP_DIR_IN, 0, true)) - ep0_stall(udc); -out: - return; -} - -static void handle_setup_packet(struct mv_udc *udc, u8 ep_num, - struct usb_ctrlrequest *setup) - __releases(&ep->udc->lock) - __acquires(&ep->udc->lock) -{ - bool delegate = false; - - nuke(&udc->eps[ep_num * 2 + EP_DIR_OUT], -ESHUTDOWN); - - dev_dbg(&udc->dev->dev, "SETUP %02x.%02x v%04x i%04x l%04x\n", - setup->bRequestType, setup->bRequest, - setup->wValue, setup->wIndex, setup->wLength); - /* We process some standard setup requests here */ - if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { - switch (setup->bRequest) { - case USB_REQ_GET_STATUS: - ch9getstatus(udc, ep_num, setup); - break; - - case USB_REQ_SET_ADDRESS: - ch9setaddress(udc, setup); - break; - - case USB_REQ_CLEAR_FEATURE: - ch9clearfeature(udc, setup); - break; - - case USB_REQ_SET_FEATURE: - ch9setfeature(udc, setup); - break; - - default: - delegate = true; - } - } else - delegate = true; - - /* delegate USB standard requests to the gadget driver */ - if (delegate == true) { - /* USB requests handled by gadget */ - if (setup->wLength) { - /* DATA phase from gadget, STATUS phase from udc */ - udc->ep0_dir = (setup->bRequestType & USB_DIR_IN) - ? EP_DIR_IN : EP_DIR_OUT; - spin_unlock(&udc->lock); - if (udc->driver->setup(&udc->gadget, - &udc->local_setup_buff) < 0) - ep0_stall(udc); - spin_lock(&udc->lock); - udc->ep0_state = (setup->bRequestType & USB_DIR_IN) - ? DATA_STATE_XMIT : DATA_STATE_RECV; - } else { - /* no DATA phase, IN STATUS phase from gadget */ - udc->ep0_dir = EP_DIR_IN; - spin_unlock(&udc->lock); - if (udc->driver->setup(&udc->gadget, - &udc->local_setup_buff) < 0) - ep0_stall(udc); - spin_lock(&udc->lock); - udc->ep0_state = WAIT_FOR_OUT_STATUS; - } - } -} - -/* complete DATA or STATUS phase of ep0 prime status phase if needed */ -static void ep0_req_complete(struct mv_udc *udc, - struct mv_ep *ep0, struct mv_req *req) -{ - u32 new_addr; - - if (udc->usb_state == USB_STATE_ADDRESS) { - /* set the new address */ - new_addr = (u32)udc->dev_addr; - writel(new_addr << USB_DEVICE_ADDRESS_BIT_SHIFT, - &udc->op_regs->deviceaddr); - } - - done(ep0, req, 0); - - switch (udc->ep0_state) { - case DATA_STATE_XMIT: - /* receive status phase */ - if (udc_prime_status(udc, EP_DIR_OUT, 0, true)) - ep0_stall(udc); - break; - case DATA_STATE_RECV: - /* send status phase */ - if (udc_prime_status(udc, EP_DIR_IN, 0 , true)) - ep0_stall(udc); - break; - case WAIT_FOR_OUT_STATUS: - udc->ep0_state = WAIT_FOR_SETUP; - break; - case WAIT_FOR_SETUP: - dev_err(&udc->dev->dev, "unexpect ep0 packets\n"); - break; - default: - ep0_stall(udc); - break; - } -} - -static void get_setup_data(struct mv_udc *udc, u8 ep_num, u8 *buffer_ptr) -{ - u32 temp; - struct mv_dqh *dqh; - - dqh = &udc->ep_dqh[ep_num * 2 + EP_DIR_OUT]; - - /* Clear bit in ENDPTSETUPSTAT */ - writel((1 << ep_num), &udc->op_regs->epsetupstat); - - /* while a hazard exists when setup package arrives */ - do { - /* Set Setup Tripwire */ - temp = readl(&udc->op_regs->usbcmd); - writel(temp | USBCMD_SETUP_TRIPWIRE_SET, &udc->op_regs->usbcmd); - - /* Copy the setup packet to local buffer */ - memcpy(buffer_ptr, (u8 *) dqh->setup_buffer, 8); - } while (!(readl(&udc->op_regs->usbcmd) & USBCMD_SETUP_TRIPWIRE_SET)); - - /* Clear Setup Tripwire */ - temp = readl(&udc->op_regs->usbcmd); - writel(temp & ~USBCMD_SETUP_TRIPWIRE_SET, &udc->op_regs->usbcmd); -} - -static void irq_process_tr_complete(struct mv_udc *udc) -{ - u32 tmp, bit_pos; - int i, ep_num = 0, direction = 0; - struct mv_ep *curr_ep; - struct mv_req *curr_req, *temp_req; - int status; - - /* - * We use separate loops for ENDPTSETUPSTAT and ENDPTCOMPLETE - * because the setup packets are to be read ASAP - */ - - /* Process all Setup packet received interrupts */ - tmp = readl(&udc->op_regs->epsetupstat); - - if (tmp) { - for (i = 0; i < udc->max_eps; i++) { - if (tmp & (1 << i)) { - get_setup_data(udc, i, - (u8 *)(&udc->local_setup_buff)); - handle_setup_packet(udc, i, - &udc->local_setup_buff); - } - } - } - - /* Don't clear the endpoint setup status register here. - * It is cleared as a setup packet is read out of the buffer - */ - - /* Process non-setup transaction complete interrupts */ - tmp = readl(&udc->op_regs->epcomplete); - - if (!tmp) - return; - - writel(tmp, &udc->op_regs->epcomplete); - - for (i = 0; i < udc->max_eps * 2; i++) { - ep_num = i >> 1; - direction = i % 2; - - bit_pos = 1 << (ep_num + 16 * direction); - - if (!(bit_pos & tmp)) - continue; - - if (i == 1) - curr_ep = &udc->eps[0]; - else - curr_ep = &udc->eps[i]; - /* process the req queue until an uncomplete request */ - list_for_each_entry_safe(curr_req, temp_req, - &curr_ep->queue, queue) { - status = process_ep_req(udc, i, curr_req); - if (status) - break; - - /* write back status to req */ - curr_req->req.status = status; - - /* ep0 request completion */ - if (ep_num == 0) { - ep0_req_complete(udc, curr_ep, curr_req); - break; - } else { - done(curr_ep, curr_req, status); - } - } - } -} - -static void irq_process_reset(struct mv_udc *udc) -{ - u32 tmp; - unsigned int loops; - - udc->ep0_dir = EP_DIR_OUT; - udc->ep0_state = WAIT_FOR_SETUP; - udc->remote_wakeup = 0; /* default to 0 on reset */ - - /* The address bits are past bit 25-31. Set the address */ - tmp = readl(&udc->op_regs->deviceaddr); - tmp &= ~(USB_DEVICE_ADDRESS_MASK); - writel(tmp, &udc->op_regs->deviceaddr); - - /* Clear all the setup token semaphores */ - tmp = readl(&udc->op_regs->epsetupstat); - writel(tmp, &udc->op_regs->epsetupstat); - - /* Clear all the endpoint complete status bits */ - tmp = readl(&udc->op_regs->epcomplete); - writel(tmp, &udc->op_regs->epcomplete); - - /* wait until all endptprime bits cleared */ - loops = LOOPS(PRIME_TIMEOUT); - while (readl(&udc->op_regs->epprime) & 0xFFFFFFFF) { - if (loops == 0) { - dev_err(&udc->dev->dev, - "Timeout for ENDPTPRIME = 0x%x\n", - readl(&udc->op_regs->epprime)); - break; - } - loops--; - udelay(LOOPS_USEC); - } - - /* Write 1s to the Flush register */ - writel((u32)~0, &udc->op_regs->epflush); - - if (readl(&udc->op_regs->portsc[0]) & PORTSCX_PORT_RESET) { - dev_info(&udc->dev->dev, "usb bus reset\n"); - udc->usb_state = USB_STATE_DEFAULT; - /* reset all the queues, stop all USB activities */ - gadget_reset(udc, udc->driver); - } else { - dev_info(&udc->dev->dev, "USB reset portsc 0x%x\n", - readl(&udc->op_regs->portsc)); - - /* - * re-initialize - * controller reset - */ - udc_reset(udc); - - /* reset all the queues, stop all USB activities */ - stop_activity(udc, udc->driver); - - /* reset ep0 dQH and endptctrl */ - ep0_reset(udc); - - /* enable interrupt and set controller to run state */ - udc_start(udc); - - udc->usb_state = USB_STATE_ATTACHED; - } -} - -static void handle_bus_resume(struct mv_udc *udc) -{ - udc->usb_state = udc->resume_state; - udc->resume_state = 0; - - /* report resume to the driver */ - if (udc->driver) { - if (udc->driver->resume) { - spin_unlock(&udc->lock); - udc->driver->resume(&udc->gadget); - spin_lock(&udc->lock); - } - } -} - -static void irq_process_suspend(struct mv_udc *udc) -{ - udc->resume_state = udc->usb_state; - udc->usb_state = USB_STATE_SUSPENDED; - - if (udc->driver->suspend) { - spin_unlock(&udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(&udc->lock); - } -} - -static void irq_process_port_change(struct mv_udc *udc) -{ - u32 portsc; - - portsc = readl(&udc->op_regs->portsc[0]); - if (!(portsc & PORTSCX_PORT_RESET)) { - /* Get the speed */ - u32 speed = portsc & PORTSCX_PORT_SPEED_MASK; - switch (speed) { - case PORTSCX_PORT_SPEED_HIGH: - udc->gadget.speed = USB_SPEED_HIGH; - break; - case PORTSCX_PORT_SPEED_FULL: - udc->gadget.speed = USB_SPEED_FULL; - break; - case PORTSCX_PORT_SPEED_LOW: - udc->gadget.speed = USB_SPEED_LOW; - break; - default: - udc->gadget.speed = USB_SPEED_UNKNOWN; - break; - } - } - - if (portsc & PORTSCX_PORT_SUSPEND) { - udc->resume_state = udc->usb_state; - udc->usb_state = USB_STATE_SUSPENDED; - if (udc->driver->suspend) { - spin_unlock(&udc->lock); - udc->driver->suspend(&udc->gadget); - spin_lock(&udc->lock); - } - } - - if (!(portsc & PORTSCX_PORT_SUSPEND) - && udc->usb_state == USB_STATE_SUSPENDED) { - handle_bus_resume(udc); - } - - if (!udc->resume_state) - udc->usb_state = USB_STATE_DEFAULT; -} - -static void irq_process_error(struct mv_udc *udc) -{ - /* Increment the error count */ - udc->errors++; -} - -static irqreturn_t mv_udc_irq(int irq, void *dev) -{ - struct mv_udc *udc = (struct mv_udc *)dev; - u32 status, intr; - - /* Disable ISR when stopped bit is set */ - if (udc->stopped) - return IRQ_NONE; - - spin_lock(&udc->lock); - - status = readl(&udc->op_regs->usbsts); - intr = readl(&udc->op_regs->usbintr); - status &= intr; - - if (status == 0) { - spin_unlock(&udc->lock); - return IRQ_NONE; - } - - /* Clear all the interrupts occurred */ - writel(status, &udc->op_regs->usbsts); - - if (status & USBSTS_ERR) - irq_process_error(udc); - - if (status & USBSTS_RESET) - irq_process_reset(udc); - - if (status & USBSTS_PORT_CHANGE) - irq_process_port_change(udc); - - if (status & USBSTS_INT) - irq_process_tr_complete(udc); - - if (status & USBSTS_SUSPEND) - irq_process_suspend(udc); - - spin_unlock(&udc->lock); - - return IRQ_HANDLED; -} - -static irqreturn_t mv_udc_vbus_irq(int irq, void *dev) -{ - struct mv_udc *udc = (struct mv_udc *)dev; - - /* polling VBUS and init phy may cause too much time*/ - if (udc->qwork) - queue_work(udc->qwork, &udc->vbus_work); - - return IRQ_HANDLED; -} - -static void mv_udc_vbus_work(struct work_struct *work) -{ - struct mv_udc *udc; - unsigned int vbus; - - udc = container_of(work, struct mv_udc, vbus_work); - if (!udc->pdata->vbus) - return; - - vbus = udc->pdata->vbus->poll(); - dev_info(&udc->dev->dev, "vbus is %d\n", vbus); - - if (vbus == VBUS_HIGH) - mv_udc_vbus_session(&udc->gadget, 1); - else if (vbus == VBUS_LOW) - mv_udc_vbus_session(&udc->gadget, 0); -} - -/* release device structure */ -static void gadget_release(struct device *_dev) -{ - struct mv_udc *udc; - - udc = dev_get_drvdata(_dev); - - complete(udc->done); -} - -static void mv_udc_remove(struct platform_device *pdev) -{ - struct mv_udc *udc; - - udc = platform_get_drvdata(pdev); - - usb_del_gadget_udc(&udc->gadget); - - if (udc->qwork) - destroy_workqueue(udc->qwork); - - /* free memory allocated in probe */ - dma_pool_destroy(udc->dtd_pool); - - if (udc->ep_dqh) - dma_free_coherent(&pdev->dev, udc->ep_dqh_size, - udc->ep_dqh, udc->ep_dqh_dma); - - mv_udc_disable(udc); - - /* free dev, wait for the release() finished */ - wait_for_completion(udc->done); -} - -static int mv_udc_probe(struct platform_device *pdev) -{ - struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); - struct mv_udc *udc; - int retval = 0; - struct resource *r; - size_t size; - - if (pdata == NULL) { - dev_err(&pdev->dev, "missing platform_data\n"); - return -ENODEV; - } - - udc = devm_kzalloc(&pdev->dev, sizeof(*udc), GFP_KERNEL); - if (udc == NULL) - return -ENOMEM; - - udc->done = &release_done; - udc->pdata = dev_get_platdata(&pdev->dev); - spin_lock_init(&udc->lock); - - udc->dev = pdev; - - if (pdata->mode == MV_USB_MODE_OTG) { - udc->transceiver = devm_usb_get_phy(&pdev->dev, - USB_PHY_TYPE_USB2); - if (IS_ERR(udc->transceiver)) { - retval = PTR_ERR(udc->transceiver); - - if (retval == -ENXIO) - return retval; - - udc->transceiver = NULL; - return -EPROBE_DEFER; - } - } - - /* udc only have one sysclk. */ - udc->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(udc->clk)) - return PTR_ERR(udc->clk); - - r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs"); - if (r == NULL) { - dev_err(&pdev->dev, "no I/O memory resource defined\n"); - return -ENODEV; - } - - udc->cap_regs = (struct mv_cap_regs __iomem *) - devm_ioremap(&pdev->dev, r->start, resource_size(r)); - if (udc->cap_regs == NULL) { - dev_err(&pdev->dev, "failed to map I/O memory\n"); - return -EBUSY; - } - - r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "phyregs"); - if (r == NULL) { - dev_err(&pdev->dev, "no phy I/O memory resource defined\n"); - return -ENODEV; - } - - udc->phy_regs = devm_ioremap(&pdev->dev, r->start, resource_size(r)); - if (udc->phy_regs == NULL) { - dev_err(&pdev->dev, "failed to map phy I/O memory\n"); - return -EBUSY; - } - - /* we will acces controller register, so enable the clk */ - retval = mv_udc_enable_internal(udc); - if (retval) - return retval; - - udc->op_regs = - (struct mv_op_regs __iomem *)((unsigned long)udc->cap_regs - + (readl(&udc->cap_regs->caplength_hciversion) - & CAPLENGTH_MASK)); - udc->max_eps = readl(&udc->cap_regs->dccparams) & DCCPARAMS_DEN_MASK; - - /* - * some platform will use usb to download image, it may not disconnect - * usb gadget before loading kernel. So first stop udc here. - */ - udc_stop(udc); - writel(0xFFFFFFFF, &udc->op_regs->usbsts); - - size = udc->max_eps * sizeof(struct mv_dqh) *2; - size = (size + DQH_ALIGNMENT - 1) & ~(DQH_ALIGNMENT - 1); - udc->ep_dqh = dma_alloc_coherent(&pdev->dev, size, - &udc->ep_dqh_dma, GFP_KERNEL); - - if (udc->ep_dqh == NULL) { - dev_err(&pdev->dev, "allocate dQH memory failed\n"); - retval = -ENOMEM; - goto err_disable_clock; - } - udc->ep_dqh_size = size; - - /* create dTD dma_pool resource */ - udc->dtd_pool = dma_pool_create("mv_dtd", - &pdev->dev, - sizeof(struct mv_dtd), - DTD_ALIGNMENT, - DMA_BOUNDARY); - - if (!udc->dtd_pool) { - retval = -ENOMEM; - goto err_free_dma; - } - - size = udc->max_eps * sizeof(struct mv_ep) *2; - udc->eps = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); - if (udc->eps == NULL) { - retval = -ENOMEM; - goto err_destroy_dma; - } - - /* initialize ep0 status request structure */ - udc->status_req = devm_kzalloc(&pdev->dev, sizeof(struct mv_req), - GFP_KERNEL); - if (!udc->status_req) { - retval = -ENOMEM; - goto err_destroy_dma; - } - INIT_LIST_HEAD(&udc->status_req->queue); - - /* allocate a small amount of memory to get valid address */ - udc->status_req->req.buf = devm_kzalloc(&pdev->dev, 8, GFP_KERNEL); - if (!udc->status_req->req.buf) { - retval = -ENOMEM; - goto err_destroy_dma; - } - udc->status_req->req.dma = DMA_ADDR_INVALID; - - udc->resume_state = USB_STATE_NOTATTACHED; - udc->usb_state = USB_STATE_POWERED; - udc->ep0_dir = EP_DIR_OUT; - udc->remote_wakeup = 0; - - r = platform_get_resource(udc->dev, IORESOURCE_IRQ, 0); - if (r == NULL) { - dev_err(&pdev->dev, "no IRQ resource defined\n"); - retval = -ENODEV; - goto err_destroy_dma; - } - udc->irq = r->start; - if (devm_request_irq(&pdev->dev, udc->irq, mv_udc_irq, - IRQF_SHARED, driver_name, udc)) { - dev_err(&pdev->dev, "Request irq %d for UDC failed\n", - udc->irq); - retval = -ENODEV; - goto err_destroy_dma; - } - - /* initialize gadget structure */ - udc->gadget.ops = &mv_ops; /* usb_gadget_ops */ - udc->gadget.ep0 = &udc->eps[0].ep; /* gadget ep0 */ - INIT_LIST_HEAD(&udc->gadget.ep_list); /* ep_list */ - udc->gadget.speed = USB_SPEED_UNKNOWN; /* speed */ - udc->gadget.max_speed = USB_SPEED_HIGH; /* support dual speed */ - - /* the "gadget" abstracts/virtualizes the controller */ - udc->gadget.name = driver_name; /* gadget name */ - - eps_init(udc); - - /* VBUS detect: we can disable/enable clock on demand.*/ - if (udc->transceiver) - udc->clock_gating = 1; - else if (pdata->vbus) { - udc->clock_gating = 1; - retval = devm_request_threaded_irq(&pdev->dev, - pdata->vbus->irq, NULL, - mv_udc_vbus_irq, IRQF_ONESHOT, "vbus", udc); - if (retval) { - dev_info(&pdev->dev, - "Can not request irq for VBUS, " - "disable clock gating\n"); - udc->clock_gating = 0; - } - - udc->qwork = create_singlethread_workqueue("mv_udc_queue"); - if (!udc->qwork) { - dev_err(&pdev->dev, "cannot create workqueue\n"); - retval = -ENOMEM; - goto err_destroy_dma; - } - - INIT_WORK(&udc->vbus_work, mv_udc_vbus_work); - } - - /* - * When clock gating is supported, we can disable clk and phy. - * If not, it means that VBUS detection is not supported, we - * have to enable vbus active all the time to let controller work. - */ - if (udc->clock_gating) - mv_udc_disable_internal(udc); - else - udc->vbus_active = 1; - - retval = usb_add_gadget_udc_release(&pdev->dev, &udc->gadget, - gadget_release); - if (retval) - goto err_create_workqueue; - - platform_set_drvdata(pdev, udc); - dev_info(&pdev->dev, "successful probe UDC device %s clock gating.\n", - udc->clock_gating ? "with" : "without"); - - return 0; - -err_create_workqueue: - if (udc->qwork) - destroy_workqueue(udc->qwork); -err_destroy_dma: - dma_pool_destroy(udc->dtd_pool); -err_free_dma: - dma_free_coherent(&pdev->dev, udc->ep_dqh_size, - udc->ep_dqh, udc->ep_dqh_dma); -err_disable_clock: - mv_udc_disable_internal(udc); - - return retval; -} - -#ifdef CONFIG_PM -static int mv_udc_suspend(struct device *dev) -{ - struct mv_udc *udc; - - udc = dev_get_drvdata(dev); - - /* if OTG is enabled, the following will be done in OTG driver*/ - if (udc->transceiver) - return 0; - - if (udc->pdata->vbus && udc->pdata->vbus->poll) - if (udc->pdata->vbus->poll() == VBUS_HIGH) { - dev_info(&udc->dev->dev, "USB cable is connected!\n"); - return -EAGAIN; - } - - /* - * only cable is unplugged, udc can suspend. - * So do not care about clock_gating == 1. - */ - if (!udc->clock_gating) { - udc_stop(udc); - - spin_lock_irq(&udc->lock); - /* stop all usb activities */ - stop_activity(udc, udc->driver); - spin_unlock_irq(&udc->lock); - - mv_udc_disable_internal(udc); - } - - return 0; -} - -static int mv_udc_resume(struct device *dev) -{ - struct mv_udc *udc; - int retval; - - udc = dev_get_drvdata(dev); - - /* if OTG is enabled, the following will be done in OTG driver*/ - if (udc->transceiver) - return 0; - - if (!udc->clock_gating) { - retval = mv_udc_enable_internal(udc); - if (retval) - return retval; - - if (udc->driver && udc->softconnect) { - udc_reset(udc); - ep0_reset(udc); - udc_start(udc); - } - } - - return 0; -} - -static const struct dev_pm_ops mv_udc_pm_ops = { - .suspend = mv_udc_suspend, - .resume = mv_udc_resume, -}; -#endif - -static void mv_udc_shutdown(struct platform_device *pdev) -{ - struct mv_udc *udc; - u32 mode; - - udc = platform_get_drvdata(pdev); - /* reset controller mode to IDLE */ - mv_udc_enable(udc); - mode = readl(&udc->op_regs->usbmode); - mode &= ~3; - writel(mode, &udc->op_regs->usbmode); - mv_udc_disable(udc); -} - -static struct platform_driver udc_driver = { - .probe = mv_udc_probe, - .remove_new = mv_udc_remove, - .shutdown = mv_udc_shutdown, - .driver = { - .name = "mv-udc", -#ifdef CONFIG_PM - .pm = &mv_udc_pm_ops, -#endif - }, -}; - -module_platform_driver(udc_driver); -MODULE_ALIAS("platform:mv-udc"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Chao Xie <chao.xie@marvell.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c deleted file mode 100644 index 12e76bb62c20..000000000000 --- a/drivers/usb/gadget/udc/net2272.c +++ /dev/null @@ -1,2723 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Driver for PLX NET2272 USB device controller - * - * Copyright (C) 2005-2006 PLX Technology, Inc. - * Copyright (C) 2006-2011 Analog Devices, Inc. - */ - -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/pci.h> -#include <linux/platform_device.h> -#include <linux/prefetch.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/timer.h> -#include <linux/usb.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <asm/byteorder.h> -#include <asm/unaligned.h> - -#include "net2272.h" - -#define DRIVER_DESC "PLX NET2272 USB Peripheral Controller" - -static const char driver_name[] = "net2272"; -static const char driver_vers[] = "2006 October 17/mainline"; -static const char driver_desc[] = DRIVER_DESC; - -static const char ep0name[] = "ep0"; -static const char * const ep_name[] = { - ep0name, - "ep-a", "ep-b", "ep-c", -}; - -#ifdef CONFIG_USB_NET2272_DMA -/* - * use_dma: the NET2272 can use an external DMA controller. - * Note that since there is no generic DMA api, some functions, - * notably request_dma, start_dma, and cancel_dma will need to be - * modified for your platform's particular dma controller. - * - * If use_dma is disabled, pio will be used instead. - */ -static bool use_dma = false; -module_param(use_dma, bool, 0644); - -/* - * dma_ep: selects the endpoint for use with dma (1=ep-a, 2=ep-b) - * The NET2272 can only use dma for a single endpoint at a time. - * At some point this could be modified to allow either endpoint - * to take control of dma as it becomes available. - * - * Note that DMA should not be used on OUT endpoints unless it can - * be guaranteed that no short packets will arrive on an IN endpoint - * while the DMA operation is pending. Otherwise the OUT DMA will - * terminate prematurely (See NET2272 Errata 630-0213-0101) - */ -static ushort dma_ep = 1; -module_param(dma_ep, ushort, 0644); - -/* - * dma_mode: net2272 dma mode setting (see LOCCTL1 definition): - * mode 0 == Slow DREQ mode - * mode 1 == Fast DREQ mode - * mode 2 == Burst mode - */ -static ushort dma_mode = 2; -module_param(dma_mode, ushort, 0644); -#else -#define use_dma 0 -#define dma_ep 1 -#define dma_mode 2 -#endif - -/* - * fifo_mode: net2272 buffer configuration: - * mode 0 == ep-{a,b,c} 512db each - * mode 1 == ep-a 1k, ep-{b,c} 512db - * mode 2 == ep-a 1k, ep-b 1k, ep-c 512db - * mode 3 == ep-a 1k, ep-b disabled, ep-c 512db - */ -static ushort fifo_mode; -module_param(fifo_mode, ushort, 0644); - -/* - * enable_suspend: When enabled, the driver will respond to - * USB suspend requests by powering down the NET2272. Otherwise, - * USB suspend requests will be ignored. This is acceptable for - * self-powered devices. For bus powered devices set this to 1. - */ -static ushort enable_suspend; -module_param(enable_suspend, ushort, 0644); - -static void assert_out_naking(struct net2272_ep *ep, const char *where) -{ - u8 tmp; - -#ifndef DEBUG - return; -#endif - - tmp = net2272_ep_read(ep, EP_STAT0); - if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) { - dev_dbg(ep->dev->dev, "%s %s %02x !NAK\n", - ep->ep.name, where, tmp); - net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS); - } -} -#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep, __func__) - -static void stop_out_naking(struct net2272_ep *ep) -{ - u8 tmp = net2272_ep_read(ep, EP_STAT0); - - if ((tmp & (1 << NAK_OUT_PACKETS)) != 0) - net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS); -} - -#define PIPEDIR(bAddress) (usb_pipein(bAddress) ? "in" : "out") - -static char *type_string(u8 bmAttributes) -{ - switch ((bmAttributes) & USB_ENDPOINT_XFERTYPE_MASK) { - case USB_ENDPOINT_XFER_BULK: return "bulk"; - case USB_ENDPOINT_XFER_ISOC: return "iso"; - case USB_ENDPOINT_XFER_INT: return "intr"; - default: return "control"; - } -} - -static char *buf_state_string(unsigned state) -{ - switch (state) { - case BUFF_FREE: return "free"; - case BUFF_VALID: return "valid"; - case BUFF_LCL: return "local"; - case BUFF_USB: return "usb"; - default: return "unknown"; - } -} - -static char *dma_mode_string(void) -{ - if (!use_dma) - return "PIO"; - switch (dma_mode) { - case 0: return "SLOW DREQ"; - case 1: return "FAST DREQ"; - case 2: return "BURST"; - default: return "invalid"; - } -} - -static void net2272_dequeue_all(struct net2272_ep *); -static int net2272_kick_dma(struct net2272_ep *, struct net2272_request *); -static int net2272_fifo_status(struct usb_ep *); - -static const struct usb_ep_ops net2272_ep_ops; - -/*---------------------------------------------------------------------------*/ - -static int -net2272_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) -{ - struct net2272 *dev; - struct net2272_ep *ep; - u32 max; - u8 tmp; - unsigned long flags; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || !desc || ep->desc || _ep->name == ep0name - || desc->bDescriptorType != USB_DT_ENDPOINT) - return -EINVAL; - dev = ep->dev; - if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - max = usb_endpoint_maxp(desc); - - spin_lock_irqsave(&dev->lock, flags); - _ep->maxpacket = max; - ep->desc = desc; - - /* net2272_ep_reset() has already been called */ - ep->stopped = 0; - ep->wedged = 0; - - /* set speed-dependent max packet */ - net2272_ep_write(ep, EP_MAXPKT0, max & 0xff); - net2272_ep_write(ep, EP_MAXPKT1, (max & 0xff00) >> 8); - - /* set type, direction, address; reset fifo counters */ - net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH); - tmp = usb_endpoint_type(desc); - if (usb_endpoint_xfer_bulk(desc)) { - /* catch some particularly blatant driver bugs */ - if ((dev->gadget.speed == USB_SPEED_HIGH && max != 512) || - (dev->gadget.speed == USB_SPEED_FULL && max > 64)) { - spin_unlock_irqrestore(&dev->lock, flags); - return -ERANGE; - } - } - ep->is_iso = usb_endpoint_xfer_isoc(desc) ? 1 : 0; - tmp <<= ENDPOINT_TYPE; - tmp |= ((desc->bEndpointAddress & 0x0f) << ENDPOINT_NUMBER); - tmp |= usb_endpoint_dir_in(desc) << ENDPOINT_DIRECTION; - tmp |= (1 << ENDPOINT_ENABLE); - - /* for OUT transfers, block the rx fifo until a read is posted */ - ep->is_in = usb_endpoint_dir_in(desc); - if (!ep->is_in) - net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS); - - net2272_ep_write(ep, EP_CFG, tmp); - - /* enable irqs */ - tmp = (1 << ep->num) | net2272_read(dev, IRQENB0); - net2272_write(dev, IRQENB0, tmp); - - tmp = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE) - | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE) - | net2272_ep_read(ep, EP_IRQENB); - net2272_ep_write(ep, EP_IRQENB, tmp); - - tmp = desc->bEndpointAddress; - dev_dbg(dev->dev, "enabled %s (ep%d%s-%s) max %04x cfg %02x\n", - _ep->name, tmp & 0x0f, PIPEDIR(tmp), - type_string(desc->bmAttributes), max, - net2272_ep_read(ep, EP_CFG)); - - spin_unlock_irqrestore(&dev->lock, flags); - return 0; -} - -static void net2272_ep_reset(struct net2272_ep *ep) -{ - u8 tmp; - - ep->desc = NULL; - INIT_LIST_HEAD(&ep->queue); - - usb_ep_set_maxpacket_limit(&ep->ep, ~0); - ep->ep.ops = &net2272_ep_ops; - - /* disable irqs, endpoint */ - net2272_ep_write(ep, EP_IRQENB, 0); - - /* init to our chosen defaults, notably so that we NAK OUT - * packets until the driver queues a read. - */ - tmp = (1 << NAK_OUT_PACKETS_MODE) | (1 << ALT_NAK_OUT_PACKETS); - net2272_ep_write(ep, EP_RSPSET, tmp); - - tmp = (1 << INTERRUPT_MODE) | (1 << HIDE_STATUS_PHASE); - if (ep->num != 0) - tmp |= (1 << ENDPOINT_TOGGLE) | (1 << ENDPOINT_HALT); - - net2272_ep_write(ep, EP_RSPCLR, tmp); - - /* scrub most status bits, and flush any fifo state */ - net2272_ep_write(ep, EP_STAT0, - (1 << DATA_IN_TOKEN_INTERRUPT) - | (1 << DATA_OUT_TOKEN_INTERRUPT) - | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT) - | (1 << DATA_PACKET_RECEIVED_INTERRUPT) - | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)); - - net2272_ep_write(ep, EP_STAT1, - (1 << TIMEOUT) - | (1 << USB_OUT_ACK_SENT) - | (1 << USB_OUT_NAK_SENT) - | (1 << USB_IN_ACK_RCVD) - | (1 << USB_IN_NAK_SENT) - | (1 << USB_STALL_SENT) - | (1 << LOCAL_OUT_ZLP) - | (1 << BUFFER_FLUSH)); - - /* fifo size is handled separately */ -} - -static int net2272_disable(struct usb_ep *_ep) -{ - struct net2272_ep *ep; - unsigned long flags; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || !ep->desc || _ep->name == ep0name) - return -EINVAL; - - spin_lock_irqsave(&ep->dev->lock, flags); - net2272_dequeue_all(ep); - net2272_ep_reset(ep); - - dev_vdbg(ep->dev->dev, "disabled %s\n", _ep->name); - - spin_unlock_irqrestore(&ep->dev->lock, flags); - return 0; -} - -/*---------------------------------------------------------------------------*/ - -static struct usb_request * -net2272_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) -{ - struct net2272_request *req; - - if (!_ep) - return NULL; - - req = kzalloc(sizeof(*req), gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - - return &req->req; -} - -static void -net2272_free_request(struct usb_ep *_ep, struct usb_request *_req) -{ - struct net2272_request *req; - - if (!_ep || !_req) - return; - - req = container_of(_req, struct net2272_request, req); - WARN_ON(!list_empty(&req->queue)); - kfree(req); -} - -static void -net2272_done(struct net2272_ep *ep, struct net2272_request *req, int status) -{ - struct net2272 *dev; - unsigned stopped = ep->stopped; - - if (ep->num == 0) { - if (ep->dev->protocol_stall) { - ep->stopped = 1; - set_halt(ep); - } - allow_status(ep); - } - - list_del_init(&req->queue); - - if (req->req.status == -EINPROGRESS) - req->req.status = status; - else - status = req->req.status; - - dev = ep->dev; - if (use_dma && ep->dma) - usb_gadget_unmap_request(&dev->gadget, &req->req, - ep->is_in); - - if (status && status != -ESHUTDOWN) - dev_vdbg(dev->dev, "complete %s req %p stat %d len %u/%u buf %p\n", - ep->ep.name, &req->req, status, - req->req.actual, req->req.length, req->req.buf); - - /* don't modify queue heads during completion callback */ - ep->stopped = 1; - spin_unlock(&dev->lock); - usb_gadget_giveback_request(&ep->ep, &req->req); - spin_lock(&dev->lock); - ep->stopped = stopped; -} - -static int -net2272_write_packet(struct net2272_ep *ep, u8 *buf, - struct net2272_request *req, unsigned max) -{ - u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA); - u16 *bufp; - unsigned length, count; - u8 tmp; - - length = min(req->req.length - req->req.actual, max); - req->req.actual += length; - - dev_vdbg(ep->dev->dev, "write packet %s req %p max %u len %u avail %u\n", - ep->ep.name, req, max, length, - (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0)); - - count = length; - bufp = (u16 *)buf; - - while (likely(count >= 2)) { - /* no byte-swap required; chip endian set during init */ - writew(*bufp++, ep_data); - count -= 2; - } - buf = (u8 *)bufp; - - /* write final byte by placing the NET2272 into 8-bit mode */ - if (unlikely(count)) { - tmp = net2272_read(ep->dev, LOCCTL); - net2272_write(ep->dev, LOCCTL, tmp & ~(1 << DATA_WIDTH)); - writeb(*buf, ep_data); - net2272_write(ep->dev, LOCCTL, tmp); - } - return length; -} - -/* returns: 0: still running, 1: completed, negative: errno */ -static int -net2272_write_fifo(struct net2272_ep *ep, struct net2272_request *req) -{ - u8 *buf; - unsigned count, max; - int status; - - dev_vdbg(ep->dev->dev, "write_fifo %s actual %d len %d\n", - ep->ep.name, req->req.actual, req->req.length); - - /* - * Keep loading the endpoint until the final packet is loaded, - * or the endpoint buffer is full. - */ - top: - /* - * Clear interrupt status - * - Packet Transmitted interrupt will become set again when the - * host successfully takes another packet - */ - net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)); - while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_FULL))) { - buf = req->req.buf + req->req.actual; - prefetch(buf); - - /* force pagesel */ - net2272_ep_read(ep, EP_STAT0); - - max = (net2272_ep_read(ep, EP_AVAIL1) << 8) | - (net2272_ep_read(ep, EP_AVAIL0)); - - if (max < ep->ep.maxpacket) - max = (net2272_ep_read(ep, EP_AVAIL1) << 8) - | (net2272_ep_read(ep, EP_AVAIL0)); - - count = net2272_write_packet(ep, buf, req, max); - /* see if we are done */ - if (req->req.length == req->req.actual) { - /* validate short or zlp packet */ - if (count < ep->ep.maxpacket) - set_fifo_bytecount(ep, 0); - net2272_done(ep, req, 0); - - if (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, - struct net2272_request, - queue); - status = net2272_kick_dma(ep, req); - - if (status < 0) - if ((net2272_ep_read(ep, EP_STAT0) - & (1 << BUFFER_EMPTY))) - goto top; - } - return 1; - } - net2272_ep_write(ep, EP_STAT0, (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)); - } - return 0; -} - -static void -net2272_out_flush(struct net2272_ep *ep) -{ - ASSERT_OUT_NAKING(ep); - - net2272_ep_write(ep, EP_STAT0, (1 << DATA_OUT_TOKEN_INTERRUPT) - | (1 << DATA_PACKET_RECEIVED_INTERRUPT)); - net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH); -} - -static int -net2272_read_packet(struct net2272_ep *ep, u8 *buf, - struct net2272_request *req, unsigned avail) -{ - u16 __iomem *ep_data = net2272_reg_addr(ep->dev, EP_DATA); - unsigned is_short; - u16 *bufp; - - req->req.actual += avail; - - dev_vdbg(ep->dev->dev, "read packet %s req %p len %u avail %u\n", - ep->ep.name, req, avail, - (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0)); - - is_short = (avail < ep->ep.maxpacket); - - if (unlikely(avail == 0)) { - /* remove any zlp from the buffer */ - (void)readw(ep_data); - return is_short; - } - - /* Ensure we get the final byte */ - if (unlikely(avail % 2)) - avail++; - bufp = (u16 *)buf; - - do { - *bufp++ = readw(ep_data); - avail -= 2; - } while (avail); - - /* - * To avoid false endpoint available race condition must read - * ep stat0 twice in the case of a short transfer - */ - if (net2272_ep_read(ep, EP_STAT0) & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) - net2272_ep_read(ep, EP_STAT0); - - return is_short; -} - -static int -net2272_read_fifo(struct net2272_ep *ep, struct net2272_request *req) -{ - u8 *buf; - unsigned is_short; - int count; - int tmp; - int cleanup = 0; - - dev_vdbg(ep->dev->dev, "read_fifo %s actual %d len %d\n", - ep->ep.name, req->req.actual, req->req.length); - - top: - do { - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - count = (net2272_ep_read(ep, EP_AVAIL1) << 8) - | net2272_ep_read(ep, EP_AVAIL0); - - net2272_ep_write(ep, EP_STAT0, - (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT) | - (1 << DATA_PACKET_RECEIVED_INTERRUPT)); - - tmp = req->req.length - req->req.actual; - - if (count > tmp) { - if ((tmp % ep->ep.maxpacket) != 0) { - dev_err(ep->dev->dev, - "%s out fifo %d bytes, expected %d\n", - ep->ep.name, count, tmp); - cleanup = 1; - } - count = (tmp > 0) ? tmp : 0; - } - - is_short = net2272_read_packet(ep, buf, req, count); - - /* completion */ - if (unlikely(cleanup || is_short || - req->req.actual == req->req.length)) { - - if (cleanup) { - net2272_out_flush(ep); - net2272_done(ep, req, -EOVERFLOW); - } else - net2272_done(ep, req, 0); - - /* re-initialize endpoint transfer registers - * otherwise they may result in erroneous pre-validation - * for subsequent control reads - */ - if (unlikely(ep->num == 0)) { - net2272_ep_write(ep, EP_TRANSFER2, 0); - net2272_ep_write(ep, EP_TRANSFER1, 0); - net2272_ep_write(ep, EP_TRANSFER0, 0); - } - - if (!list_empty(&ep->queue)) { - int status; - - req = list_entry(ep->queue.next, - struct net2272_request, queue); - status = net2272_kick_dma(ep, req); - if ((status < 0) && - !(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY))) - goto top; - } - return 1; - } - } while (!(net2272_ep_read(ep, EP_STAT0) & (1 << BUFFER_EMPTY))); - - return 0; -} - -static void -net2272_pio_advance(struct net2272_ep *ep) -{ - struct net2272_request *req; - - if (unlikely(list_empty(&ep->queue))) - return; - - req = list_entry(ep->queue.next, struct net2272_request, queue); - (ep->is_in ? net2272_write_fifo : net2272_read_fifo)(ep, req); -} - -/* returns 0 on success, else negative errno */ -static int -net2272_request_dma(struct net2272 *dev, unsigned ep, u32 buf, - unsigned len, unsigned dir) -{ - dev_vdbg(dev->dev, "request_dma ep %d buf %08x len %d dir %d\n", - ep, buf, len, dir); - - /* The NET2272 only supports a single dma channel */ - if (dev->dma_busy) - return -EBUSY; - /* - * EP_TRANSFER (used to determine the number of bytes received - * in an OUT transfer) is 24 bits wide; don't ask for more than that. - */ - if ((dir == 1) && (len > 0x1000000)) - return -EINVAL; - - dev->dma_busy = 1; - - /* initialize platform's dma */ -#ifdef CONFIG_USB_PCI - /* NET2272 addr, buffer addr, length, etc. */ - switch (dev->dev_id) { - case PCI_DEVICE_ID_RDK1: - /* Setup PLX 9054 DMA mode */ - writel((1 << LOCAL_BUS_WIDTH) | - (1 << TA_READY_INPUT_ENABLE) | - (0 << LOCAL_BURST_ENABLE) | - (1 << DONE_INTERRUPT_ENABLE) | - (1 << LOCAL_ADDRESSING_MODE) | - (1 << DEMAND_MODE) | - (1 << DMA_EOT_ENABLE) | - (1 << FAST_SLOW_TERMINATE_MODE_SELECT) | - (1 << DMA_CHANNEL_INTERRUPT_SELECT), - dev->rdk1.plx9054_base_addr + DMAMODE0); - - writel(0x100000, dev->rdk1.plx9054_base_addr + DMALADR0); - writel(buf, dev->rdk1.plx9054_base_addr + DMAPADR0); - writel(len, dev->rdk1.plx9054_base_addr + DMASIZ0); - writel((dir << DIRECTION_OF_TRANSFER) | - (1 << INTERRUPT_AFTER_TERMINAL_COUNT), - dev->rdk1.plx9054_base_addr + DMADPR0); - writel((1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE) | - readl(dev->rdk1.plx9054_base_addr + INTCSR), - dev->rdk1.plx9054_base_addr + INTCSR); - - break; - } -#endif - - net2272_write(dev, DMAREQ, - (0 << DMA_BUFFER_VALID) | - (1 << DMA_REQUEST_ENABLE) | - (1 << DMA_CONTROL_DACK) | - (dev->dma_eot_polarity << EOT_POLARITY) | - (dev->dma_dack_polarity << DACK_POLARITY) | - (dev->dma_dreq_polarity << DREQ_POLARITY) | - ((ep >> 1) << DMA_ENDPOINT_SELECT)); - - (void) net2272_read(dev, SCRATCH); - - return 0; -} - -static void -net2272_start_dma(struct net2272 *dev) -{ - /* start platform's dma controller */ -#ifdef CONFIG_USB_PCI - switch (dev->dev_id) { - case PCI_DEVICE_ID_RDK1: - writeb((1 << CHANNEL_ENABLE) | (1 << CHANNEL_START), - dev->rdk1.plx9054_base_addr + DMACSR0); - break; - } -#endif -} - -/* returns 0 on success, else negative errno */ -static int -net2272_kick_dma(struct net2272_ep *ep, struct net2272_request *req) -{ - unsigned size; - u8 tmp; - - if (!use_dma || (ep->num < 1) || (ep->num > 2) || !ep->dma) - return -EINVAL; - - /* don't use dma for odd-length transfers - * otherwise, we'd need to deal with the last byte with pio - */ - if (req->req.length & 1) - return -EINVAL; - - dev_vdbg(ep->dev->dev, "kick_dma %s req %p dma %08llx\n", - ep->ep.name, req, (unsigned long long) req->req.dma); - - net2272_ep_write(ep, EP_RSPSET, 1 << ALT_NAK_OUT_PACKETS); - - /* The NET2272 can only use DMA on one endpoint at a time */ - if (ep->dev->dma_busy) - return -EBUSY; - - /* Make sure we only DMA an even number of bytes (we'll use - * pio to complete the transfer) - */ - size = req->req.length; - size &= ~1; - - /* device-to-host transfer */ - if (ep->is_in) { - /* initialize platform's dma controller */ - if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 0)) - /* unable to obtain DMA channel; return error and use pio mode */ - return -EBUSY; - req->req.actual += size; - - /* host-to-device transfer */ - } else { - tmp = net2272_ep_read(ep, EP_STAT0); - - /* initialize platform's dma controller */ - if (net2272_request_dma(ep->dev, ep->num, req->req.dma, size, 1)) - /* unable to obtain DMA channel; return error and use pio mode */ - return -EBUSY; - - if (!(tmp & (1 << BUFFER_EMPTY))) - ep->not_empty = 1; - else - ep->not_empty = 0; - - - /* allow the endpoint's buffer to fill */ - net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS); - - /* this transfer completed and data's already in the fifo - * return error so pio gets used. - */ - if (tmp & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) { - - /* deassert dreq */ - net2272_write(ep->dev, DMAREQ, - (0 << DMA_BUFFER_VALID) | - (0 << DMA_REQUEST_ENABLE) | - (1 << DMA_CONTROL_DACK) | - (ep->dev->dma_eot_polarity << EOT_POLARITY) | - (ep->dev->dma_dack_polarity << DACK_POLARITY) | - (ep->dev->dma_dreq_polarity << DREQ_POLARITY) | - ((ep->num >> 1) << DMA_ENDPOINT_SELECT)); - - return -EBUSY; - } - } - - /* Don't use per-packet interrupts: use dma interrupts only */ - net2272_ep_write(ep, EP_IRQENB, 0); - - net2272_start_dma(ep->dev); - - return 0; -} - -static void net2272_cancel_dma(struct net2272 *dev) -{ -#ifdef CONFIG_USB_PCI - switch (dev->dev_id) { - case PCI_DEVICE_ID_RDK1: - writeb(0, dev->rdk1.plx9054_base_addr + DMACSR0); - writeb(1 << CHANNEL_ABORT, dev->rdk1.plx9054_base_addr + DMACSR0); - while (!(readb(dev->rdk1.plx9054_base_addr + DMACSR0) & - (1 << CHANNEL_DONE))) - continue; /* wait for dma to stabalize */ - - /* dma abort generates an interrupt */ - writeb(1 << CHANNEL_CLEAR_INTERRUPT, - dev->rdk1.plx9054_base_addr + DMACSR0); - break; - } -#endif - - dev->dma_busy = 0; -} - -/*---------------------------------------------------------------------------*/ - -static int -net2272_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) -{ - struct net2272_request *req; - struct net2272_ep *ep; - struct net2272 *dev; - unsigned long flags; - int status = -1; - u8 s; - - req = container_of(_req, struct net2272_request, req); - if (!_req || !_req->complete || !_req->buf - || !list_empty(&req->queue)) - return -EINVAL; - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || (!ep->desc && ep->num != 0)) - return -EINVAL; - dev = ep->dev; - if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - /* set up dma mapping in case the caller didn't */ - if (use_dma && ep->dma) { - status = usb_gadget_map_request(&dev->gadget, _req, - ep->is_in); - if (status) - return status; - } - - dev_vdbg(dev->dev, "%s queue req %p, len %d buf %p dma %08llx %s\n", - _ep->name, _req, _req->length, _req->buf, - (unsigned long long) _req->dma, _req->zero ? "zero" : "!zero"); - - spin_lock_irqsave(&dev->lock, flags); - - _req->status = -EINPROGRESS; - _req->actual = 0; - - /* kickstart this i/o queue? */ - if (list_empty(&ep->queue) && !ep->stopped) { - /* maybe there's no control data, just status ack */ - if (ep->num == 0 && _req->length == 0) { - net2272_done(ep, req, 0); - dev_vdbg(dev->dev, "%s status ack\n", ep->ep.name); - goto done; - } - - /* Return zlp, don't let it block subsequent packets */ - s = net2272_ep_read(ep, EP_STAT0); - if (s & (1 << BUFFER_EMPTY)) { - /* Buffer is empty check for a blocking zlp, handle it */ - if ((s & (1 << NAK_OUT_PACKETS)) && - net2272_ep_read(ep, EP_STAT1) & (1 << LOCAL_OUT_ZLP)) { - dev_dbg(dev->dev, "WARNING: returning ZLP short packet termination!\n"); - /* - * Request is going to terminate with a short packet ... - * hope the client is ready for it! - */ - status = net2272_read_fifo(ep, req); - /* clear short packet naking */ - net2272_ep_write(ep, EP_STAT0, (1 << NAK_OUT_PACKETS)); - goto done; - } - } - - /* try dma first */ - status = net2272_kick_dma(ep, req); - - if (status < 0) { - /* dma failed (most likely in use by another endpoint) - * fallback to pio - */ - status = 0; - - if (ep->is_in) - status = net2272_write_fifo(ep, req); - else { - s = net2272_ep_read(ep, EP_STAT0); - if ((s & (1 << BUFFER_EMPTY)) == 0) - status = net2272_read_fifo(ep, req); - } - - if (unlikely(status != 0)) { - if (status > 0) - status = 0; - req = NULL; - } - } - } - if (likely(req)) - list_add_tail(&req->queue, &ep->queue); - - if (likely(!list_empty(&ep->queue))) - net2272_ep_write(ep, EP_RSPCLR, 1 << ALT_NAK_OUT_PACKETS); - done: - spin_unlock_irqrestore(&dev->lock, flags); - - return 0; -} - -/* dequeue ALL requests */ -static void -net2272_dequeue_all(struct net2272_ep *ep) -{ - struct net2272_request *req; - - /* called with spinlock held */ - ep->stopped = 1; - - while (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, - struct net2272_request, - queue); - net2272_done(ep, req, -ESHUTDOWN); - } -} - -/* dequeue JUST ONE request */ -static int -net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req) -{ - struct net2272_ep *ep; - struct net2272_request *req = NULL, *iter; - unsigned long flags; - int stopped; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || (!ep->desc && ep->num != 0) || !_req) - return -EINVAL; - - spin_lock_irqsave(&ep->dev->lock, flags); - stopped = ep->stopped; - ep->stopped = 1; - - /* make sure it's still queued on this endpoint */ - list_for_each_entry(iter, &ep->queue, queue) { - if (&iter->req != _req) - continue; - req = iter; - break; - } - if (!req) { - ep->stopped = stopped; - spin_unlock_irqrestore(&ep->dev->lock, flags); - return -EINVAL; - } - - /* queue head may be partially complete */ - if (ep->queue.next == &req->queue) { - dev_dbg(ep->dev->dev, "unlink (%s) pio\n", _ep->name); - net2272_done(ep, req, -ECONNRESET); - } - ep->stopped = stopped; - - spin_unlock_irqrestore(&ep->dev->lock, flags); - return 0; -} - -/*---------------------------------------------------------------------------*/ - -static int -net2272_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) -{ - struct net2272_ep *ep; - unsigned long flags; - int ret = 0; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || (!ep->desc && ep->num != 0)) - return -EINVAL; - if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - if (ep->desc /* not ep0 */ && usb_endpoint_xfer_isoc(ep->desc)) - return -EINVAL; - - spin_lock_irqsave(&ep->dev->lock, flags); - if (!list_empty(&ep->queue)) - ret = -EAGAIN; - else if (ep->is_in && value && net2272_fifo_status(_ep) != 0) - ret = -EAGAIN; - else { - dev_vdbg(ep->dev->dev, "%s %s %s\n", _ep->name, - value ? "set" : "clear", - wedged ? "wedge" : "halt"); - /* set/clear */ - if (value) { - if (ep->num == 0) - ep->dev->protocol_stall = 1; - else - set_halt(ep); - if (wedged) - ep->wedged = 1; - } else { - clear_halt(ep); - ep->wedged = 0; - } - } - spin_unlock_irqrestore(&ep->dev->lock, flags); - - return ret; -} - -static int -net2272_set_halt(struct usb_ep *_ep, int value) -{ - return net2272_set_halt_and_wedge(_ep, value, 0); -} - -static int -net2272_set_wedge(struct usb_ep *_ep) -{ - if (!_ep || _ep->name == ep0name) - return -EINVAL; - return net2272_set_halt_and_wedge(_ep, 1, 1); -} - -static int -net2272_fifo_status(struct usb_ep *_ep) -{ - struct net2272_ep *ep; - u16 avail; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || (!ep->desc && ep->num != 0)) - return -ENODEV; - if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN) - return -ESHUTDOWN; - - avail = net2272_ep_read(ep, EP_AVAIL1) << 8; - avail |= net2272_ep_read(ep, EP_AVAIL0); - if (avail > ep->fifo_size) - return -EOVERFLOW; - if (ep->is_in) - avail = ep->fifo_size - avail; - return avail; -} - -static void -net2272_fifo_flush(struct usb_ep *_ep) -{ - struct net2272_ep *ep; - - ep = container_of(_ep, struct net2272_ep, ep); - if (!_ep || (!ep->desc && ep->num != 0)) - return; - if (!ep->dev->driver || ep->dev->gadget.speed == USB_SPEED_UNKNOWN) - return; - - net2272_ep_write(ep, EP_STAT1, 1 << BUFFER_FLUSH); -} - -static const struct usb_ep_ops net2272_ep_ops = { - .enable = net2272_enable, - .disable = net2272_disable, - - .alloc_request = net2272_alloc_request, - .free_request = net2272_free_request, - - .queue = net2272_queue, - .dequeue = net2272_dequeue, - - .set_halt = net2272_set_halt, - .set_wedge = net2272_set_wedge, - .fifo_status = net2272_fifo_status, - .fifo_flush = net2272_fifo_flush, -}; - -/*---------------------------------------------------------------------------*/ - -static int -net2272_get_frame(struct usb_gadget *_gadget) -{ - struct net2272 *dev; - unsigned long flags; - u16 ret; - - if (!_gadget) - return -ENODEV; - dev = container_of(_gadget, struct net2272, gadget); - spin_lock_irqsave(&dev->lock, flags); - - ret = net2272_read(dev, FRAME1) << 8; - ret |= net2272_read(dev, FRAME0); - - spin_unlock_irqrestore(&dev->lock, flags); - return ret; -} - -static int -net2272_wakeup(struct usb_gadget *_gadget) -{ - struct net2272 *dev; - u8 tmp; - unsigned long flags; - - if (!_gadget) - return 0; - dev = container_of(_gadget, struct net2272, gadget); - - spin_lock_irqsave(&dev->lock, flags); - tmp = net2272_read(dev, USBCTL0); - if (tmp & (1 << IO_WAKEUP_ENABLE)) - net2272_write(dev, USBCTL1, (1 << GENERATE_RESUME)); - - spin_unlock_irqrestore(&dev->lock, flags); - - return 0; -} - -static int -net2272_set_selfpowered(struct usb_gadget *_gadget, int value) -{ - if (!_gadget) - return -ENODEV; - - _gadget->is_selfpowered = (value != 0); - - return 0; -} - -static int -net2272_pullup(struct usb_gadget *_gadget, int is_on) -{ - struct net2272 *dev; - u8 tmp; - unsigned long flags; - - if (!_gadget) - return -ENODEV; - dev = container_of(_gadget, struct net2272, gadget); - - spin_lock_irqsave(&dev->lock, flags); - tmp = net2272_read(dev, USBCTL0); - dev->softconnect = (is_on != 0); - if (is_on) - tmp |= (1 << USB_DETECT_ENABLE); - else - tmp &= ~(1 << USB_DETECT_ENABLE); - net2272_write(dev, USBCTL0, tmp); - spin_unlock_irqrestore(&dev->lock, flags); - - return 0; -} - -static int net2272_start(struct usb_gadget *_gadget, - struct usb_gadget_driver *driver); -static int net2272_stop(struct usb_gadget *_gadget); -static void net2272_async_callbacks(struct usb_gadget *_gadget, bool enable); - -static const struct usb_gadget_ops net2272_ops = { - .get_frame = net2272_get_frame, - .wakeup = net2272_wakeup, - .set_selfpowered = net2272_set_selfpowered, - .pullup = net2272_pullup, - .udc_start = net2272_start, - .udc_stop = net2272_stop, - .udc_async_callbacks = net2272_async_callbacks, -}; - -/*---------------------------------------------------------------------------*/ - -static ssize_t -registers_show(struct device *_dev, struct device_attribute *attr, char *buf) -{ - struct net2272 *dev; - char *next; - unsigned size, t; - unsigned long flags; - u8 t1, t2; - int i; - const char *s; - - dev = dev_get_drvdata(_dev); - next = buf; - size = PAGE_SIZE; - spin_lock_irqsave(&dev->lock, flags); - - /* Main Control Registers */ - t = scnprintf(next, size, "%s version %s," - "chiprev %02x, locctl %02x\n" - "irqenb0 %02x irqenb1 %02x " - "irqstat0 %02x irqstat1 %02x\n", - driver_name, driver_vers, dev->chiprev, - net2272_read(dev, LOCCTL), - net2272_read(dev, IRQENB0), - net2272_read(dev, IRQENB1), - net2272_read(dev, IRQSTAT0), - net2272_read(dev, IRQSTAT1)); - size -= t; - next += t; - - /* DMA */ - t1 = net2272_read(dev, DMAREQ); - t = scnprintf(next, size, "\ndmareq %02x: %s %s%s%s%s\n", - t1, ep_name[(t1 & 0x01) + 1], - t1 & (1 << DMA_CONTROL_DACK) ? "dack " : "", - t1 & (1 << DMA_REQUEST_ENABLE) ? "reqenb " : "", - t1 & (1 << DMA_REQUEST) ? "req " : "", - t1 & (1 << DMA_BUFFER_VALID) ? "valid " : ""); - size -= t; - next += t; - - /* USB Control Registers */ - t1 = net2272_read(dev, USBCTL1); - if (t1 & (1 << VBUS_PIN)) { - if (t1 & (1 << USB_HIGH_SPEED)) - s = "high speed"; - else if (dev->gadget.speed == USB_SPEED_UNKNOWN) - s = "powered"; - else - s = "full speed"; - } else - s = "not attached"; - t = scnprintf(next, size, - "usbctl0 %02x usbctl1 %02x addr 0x%02x (%s)\n", - net2272_read(dev, USBCTL0), t1, - net2272_read(dev, OURADDR), s); - size -= t; - next += t; - - /* Endpoint Registers */ - for (i = 0; i < 4; ++i) { - struct net2272_ep *ep; - - ep = &dev->ep[i]; - if (i && !ep->desc) - continue; - - t1 = net2272_ep_read(ep, EP_CFG); - t2 = net2272_ep_read(ep, EP_RSPSET); - t = scnprintf(next, size, - "\n%s\tcfg %02x rsp (%02x) %s%s%s%s%s%s%s%s" - "irqenb %02x\n", - ep->ep.name, t1, t2, - (t2 & (1 << ALT_NAK_OUT_PACKETS)) ? "NAK " : "", - (t2 & (1 << HIDE_STATUS_PHASE)) ? "hide " : "", - (t2 & (1 << AUTOVALIDATE)) ? "auto " : "", - (t2 & (1 << INTERRUPT_MODE)) ? "interrupt " : "", - (t2 & (1 << CONTROL_STATUS_PHASE_HANDSHAKE)) ? "status " : "", - (t2 & (1 << NAK_OUT_PACKETS_MODE)) ? "NAKmode " : "", - (t2 & (1 << ENDPOINT_TOGGLE)) ? "DATA1 " : "DATA0 ", - (t2 & (1 << ENDPOINT_HALT)) ? "HALT " : "", - net2272_ep_read(ep, EP_IRQENB)); - size -= t; - next += t; - - t = scnprintf(next, size, - "\tstat0 %02x stat1 %02x avail %04x " - "(ep%d%s-%s)%s\n", - net2272_ep_read(ep, EP_STAT0), - net2272_ep_read(ep, EP_STAT1), - (net2272_ep_read(ep, EP_AVAIL1) << 8) | net2272_ep_read(ep, EP_AVAIL0), - t1 & 0x0f, - ep->is_in ? "in" : "out", - type_string(t1 >> 5), - ep->stopped ? "*" : ""); - size -= t; - next += t; - - t = scnprintf(next, size, - "\tep_transfer %06x\n", - ((net2272_ep_read(ep, EP_TRANSFER2) & 0xff) << 16) | - ((net2272_ep_read(ep, EP_TRANSFER1) & 0xff) << 8) | - ((net2272_ep_read(ep, EP_TRANSFER0) & 0xff))); - size -= t; - next += t; - - t1 = net2272_ep_read(ep, EP_BUFF_STATES) & 0x03; - t2 = (net2272_ep_read(ep, EP_BUFF_STATES) >> 2) & 0x03; - t = scnprintf(next, size, - "\tbuf-a %s buf-b %s\n", - buf_state_string(t1), - buf_state_string(t2)); - size -= t; - next += t; - } - - spin_unlock_irqrestore(&dev->lock, flags); - - return PAGE_SIZE - size; -} -static DEVICE_ATTR_RO(registers); - -/*---------------------------------------------------------------------------*/ - -static void -net2272_set_fifo_mode(struct net2272 *dev, int mode) -{ - u8 tmp; - - tmp = net2272_read(dev, LOCCTL) & 0x3f; - tmp |= (mode << 6); - net2272_write(dev, LOCCTL, tmp); - - INIT_LIST_HEAD(&dev->gadget.ep_list); - - /* always ep-a, ep-c ... maybe not ep-b */ - list_add_tail(&dev->ep[1].ep.ep_list, &dev->gadget.ep_list); - - switch (mode) { - case 0: - list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list); - dev->ep[1].fifo_size = dev->ep[2].fifo_size = 512; - break; - case 1: - list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list); - dev->ep[1].fifo_size = 1024; - dev->ep[2].fifo_size = 512; - break; - case 2: - list_add_tail(&dev->ep[2].ep.ep_list, &dev->gadget.ep_list); - dev->ep[1].fifo_size = dev->ep[2].fifo_size = 1024; - break; - case 3: - dev->ep[1].fifo_size = 1024; - break; - } - - /* ep-c is always 2 512 byte buffers */ - list_add_tail(&dev->ep[3].ep.ep_list, &dev->gadget.ep_list); - dev->ep[3].fifo_size = 512; -} - -/*---------------------------------------------------------------------------*/ - -static void -net2272_usb_reset(struct net2272 *dev) -{ - dev->gadget.speed = USB_SPEED_UNKNOWN; - - net2272_cancel_dma(dev); - - net2272_write(dev, IRQENB0, 0); - net2272_write(dev, IRQENB1, 0); - - /* clear irq state */ - net2272_write(dev, IRQSTAT0, 0xff); - net2272_write(dev, IRQSTAT1, ~(1 << SUSPEND_REQUEST_INTERRUPT)); - - net2272_write(dev, DMAREQ, - (0 << DMA_BUFFER_VALID) | - (0 << DMA_REQUEST_ENABLE) | - (1 << DMA_CONTROL_DACK) | - (dev->dma_eot_polarity << EOT_POLARITY) | - (dev->dma_dack_polarity << DACK_POLARITY) | - (dev->dma_dreq_polarity << DREQ_POLARITY) | - ((dma_ep >> 1) << DMA_ENDPOINT_SELECT)); - - net2272_cancel_dma(dev); - net2272_set_fifo_mode(dev, (fifo_mode <= 3) ? fifo_mode : 0); - - /* Set the NET2272 ep fifo data width to 16-bit mode and for correct byte swapping - * note that the higher level gadget drivers are expected to convert data to little endian. - * Enable byte swap for your local bus/cpu if needed by setting BYTE_SWAP in LOCCTL here - */ - net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) | (1 << DATA_WIDTH)); - net2272_write(dev, LOCCTL1, (dma_mode << DMA_MODE)); -} - -static void -net2272_usb_reinit(struct net2272 *dev) -{ - int i; - - /* basic endpoint init */ - for (i = 0; i < 4; ++i) { - struct net2272_ep *ep = &dev->ep[i]; - - ep->ep.name = ep_name[i]; - ep->dev = dev; - ep->num = i; - ep->not_empty = 0; - - if (use_dma && ep->num == dma_ep) - ep->dma = 1; - - if (i > 0 && i <= 3) - ep->fifo_size = 512; - else - ep->fifo_size = 64; - net2272_ep_reset(ep); - - if (i == 0) { - ep->ep.caps.type_control = true; - } else { - ep->ep.caps.type_iso = true; - ep->ep.caps.type_bulk = true; - ep->ep.caps.type_int = true; - } - - ep->ep.caps.dir_in = true; - ep->ep.caps.dir_out = true; - } - usb_ep_set_maxpacket_limit(&dev->ep[0].ep, 64); - - dev->gadget.ep0 = &dev->ep[0].ep; - dev->ep[0].stopped = 0; - INIT_LIST_HEAD(&dev->gadget.ep0->ep_list); -} - -static void -net2272_ep0_start(struct net2272 *dev) -{ - struct net2272_ep *ep0 = &dev->ep[0]; - - net2272_ep_write(ep0, EP_RSPSET, - (1 << NAK_OUT_PACKETS_MODE) | - (1 << ALT_NAK_OUT_PACKETS)); - net2272_ep_write(ep0, EP_RSPCLR, - (1 << HIDE_STATUS_PHASE) | - (1 << CONTROL_STATUS_PHASE_HANDSHAKE)); - net2272_write(dev, USBCTL0, - (dev->softconnect << USB_DETECT_ENABLE) | - (1 << USB_ROOT_PORT_WAKEUP_ENABLE) | - (1 << IO_WAKEUP_ENABLE)); - net2272_write(dev, IRQENB0, - (1 << SETUP_PACKET_INTERRUPT_ENABLE) | - (1 << ENDPOINT_0_INTERRUPT_ENABLE) | - (1 << DMA_DONE_INTERRUPT_ENABLE)); - net2272_write(dev, IRQENB1, - (1 << VBUS_INTERRUPT_ENABLE) | - (1 << ROOT_PORT_RESET_INTERRUPT_ENABLE) | - (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE)); -} - -/* when a driver is successfully registered, it will receive - * control requests including set_configuration(), which enables - * non-control requests. then usb traffic follows until a - * disconnect is reported. then a host may connect again, or - * the driver might get unbound. - */ -static int net2272_start(struct usb_gadget *_gadget, - struct usb_gadget_driver *driver) -{ - struct net2272 *dev; - unsigned i; - - if (!driver || !driver->setup || - driver->max_speed != USB_SPEED_HIGH) - return -EINVAL; - - dev = container_of(_gadget, struct net2272, gadget); - - for (i = 0; i < 4; ++i) - dev->ep[i].irqs = 0; - /* hook up the driver ... */ - dev->softconnect = 1; - dev->driver = driver; - - /* ... then enable host detection and ep0; and we're ready - * for set_configuration as well as eventual disconnect. - */ - net2272_ep0_start(dev); - - return 0; -} - -static void -stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver) -{ - int i; - - /* don't disconnect if it's not connected */ - if (dev->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - - /* stop hardware; prevent new request submissions; - * and kill any outstanding requests. - */ - net2272_usb_reset(dev); - for (i = 0; i < 4; ++i) - net2272_dequeue_all(&dev->ep[i]); - - /* report disconnect; the driver is already quiesced */ - if (dev->async_callbacks && driver) { - spin_unlock(&dev->lock); - driver->disconnect(&dev->gadget); - spin_lock(&dev->lock); - } - - net2272_usb_reinit(dev); -} - -static int net2272_stop(struct usb_gadget *_gadget) -{ - struct net2272 *dev; - unsigned long flags; - - dev = container_of(_gadget, struct net2272, gadget); - - spin_lock_irqsave(&dev->lock, flags); - stop_activity(dev, NULL); - spin_unlock_irqrestore(&dev->lock, flags); - - dev->driver = NULL; - - return 0; -} - -static void net2272_async_callbacks(struct usb_gadget *_gadget, bool enable) -{ - struct net2272 *dev = container_of(_gadget, struct net2272, gadget); - - spin_lock_irq(&dev->lock); - dev->async_callbacks = enable; - spin_unlock_irq(&dev->lock); -} - -/*---------------------------------------------------------------------------*/ -/* handle ep-a/ep-b dma completions */ -static void -net2272_handle_dma(struct net2272_ep *ep) -{ - struct net2272_request *req; - unsigned len; - int status; - - if (!list_empty(&ep->queue)) - req = list_entry(ep->queue.next, - struct net2272_request, queue); - else - req = NULL; - - dev_vdbg(ep->dev->dev, "handle_dma %s req %p\n", ep->ep.name, req); - - /* Ensure DREQ is de-asserted */ - net2272_write(ep->dev, DMAREQ, - (0 << DMA_BUFFER_VALID) - | (0 << DMA_REQUEST_ENABLE) - | (1 << DMA_CONTROL_DACK) - | (ep->dev->dma_eot_polarity << EOT_POLARITY) - | (ep->dev->dma_dack_polarity << DACK_POLARITY) - | (ep->dev->dma_dreq_polarity << DREQ_POLARITY) - | (ep->dma << DMA_ENDPOINT_SELECT)); - - ep->dev->dma_busy = 0; - - net2272_ep_write(ep, EP_IRQENB, - (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE) - | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE) - | net2272_ep_read(ep, EP_IRQENB)); - - /* device-to-host transfer completed */ - if (ep->is_in) { - /* validate a short packet or zlp if necessary */ - if ((req->req.length % ep->ep.maxpacket != 0) || - req->req.zero) - set_fifo_bytecount(ep, 0); - - net2272_done(ep, req, 0); - if (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, - struct net2272_request, queue); - status = net2272_kick_dma(ep, req); - if (status < 0) - net2272_pio_advance(ep); - } - - /* host-to-device transfer completed */ - } else { - /* terminated with a short packet? */ - if (net2272_read(ep->dev, IRQSTAT0) & - (1 << DMA_DONE_INTERRUPT)) { - /* abort system dma */ - net2272_cancel_dma(ep->dev); - } - - /* EP_TRANSFER will contain the number of bytes - * actually received. - * NOTE: There is no overflow detection on EP_TRANSFER: - * We can't deal with transfers larger than 2^24 bytes! - */ - len = (net2272_ep_read(ep, EP_TRANSFER2) << 16) - | (net2272_ep_read(ep, EP_TRANSFER1) << 8) - | (net2272_ep_read(ep, EP_TRANSFER0)); - - if (ep->not_empty) - len += 4; - - req->req.actual += len; - - /* get any remaining data */ - net2272_pio_advance(ep); - } -} - -/*---------------------------------------------------------------------------*/ - -static void -net2272_handle_ep(struct net2272_ep *ep) -{ - struct net2272_request *req; - u8 stat0, stat1; - - if (!list_empty(&ep->queue)) - req = list_entry(ep->queue.next, - struct net2272_request, queue); - else - req = NULL; - - /* ack all, and handle what we care about */ - stat0 = net2272_ep_read(ep, EP_STAT0); - stat1 = net2272_ep_read(ep, EP_STAT1); - ep->irqs++; - - dev_vdbg(ep->dev->dev, "%s ack ep_stat0 %02x, ep_stat1 %02x, req %p\n", - ep->ep.name, stat0, stat1, req ? &req->req : NULL); - - net2272_ep_write(ep, EP_STAT0, stat0 & - ~((1 << NAK_OUT_PACKETS) - | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT))); - net2272_ep_write(ep, EP_STAT1, stat1); - - /* data packet(s) received (in the fifo, OUT) - * direction must be validated, otherwise control read status phase - * could be interpreted as a valid packet - */ - if (!ep->is_in && (stat0 & (1 << DATA_PACKET_RECEIVED_INTERRUPT))) - net2272_pio_advance(ep); - /* data packet(s) transmitted (IN) */ - else if (stat0 & (1 << DATA_PACKET_TRANSMITTED_INTERRUPT)) - net2272_pio_advance(ep); -} - -static struct net2272_ep * -net2272_get_ep_by_addr(struct net2272 *dev, u16 wIndex) -{ - struct net2272_ep *ep; - - if ((wIndex & USB_ENDPOINT_NUMBER_MASK) == 0) - return &dev->ep[0]; - - list_for_each_entry(ep, &dev->gadget.ep_list, ep.ep_list) { - u8 bEndpointAddress; - - if (!ep->desc) - continue; - bEndpointAddress = ep->desc->bEndpointAddress; - if ((wIndex ^ bEndpointAddress) & USB_DIR_IN) - continue; - if ((wIndex & 0x0f) == (bEndpointAddress & 0x0f)) - return ep; - } - return NULL; -} - -/* - * USB Test Packet: - * JKJKJKJK * 9 - * JJKKJJKK * 8 - * JJJJKKKK * 8 - * JJJJJJJKKKKKKK * 8 - * JJJJJJJK * 8 - * {JKKKKKKK * 10}, JK - */ -static const u8 net2272_test_packet[] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, - 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, 0xEE, - 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0x7F, 0xBF, 0xDF, 0xEF, 0xF7, 0xFB, 0xFD, - 0xFC, 0x7E, 0xBF, 0xDF, 0xEF, 0xF7, 0xFD, 0x7E -}; - -static void -net2272_set_test_mode(struct net2272 *dev, int mode) -{ - int i; - - /* Disable all net2272 interrupts: - * Nothing but a power cycle should stop the test. - */ - net2272_write(dev, IRQENB0, 0x00); - net2272_write(dev, IRQENB1, 0x00); - - /* Force tranceiver to high-speed */ - net2272_write(dev, XCVRDIAG, 1 << FORCE_HIGH_SPEED); - - net2272_write(dev, PAGESEL, 0); - net2272_write(dev, EP_STAT0, 1 << DATA_PACKET_TRANSMITTED_INTERRUPT); - net2272_write(dev, EP_RSPCLR, - (1 << CONTROL_STATUS_PHASE_HANDSHAKE) - | (1 << HIDE_STATUS_PHASE)); - net2272_write(dev, EP_CFG, 1 << ENDPOINT_DIRECTION); - net2272_write(dev, EP_STAT1, 1 << BUFFER_FLUSH); - - /* wait for status phase to complete */ - while (!(net2272_read(dev, EP_STAT0) & - (1 << DATA_PACKET_TRANSMITTED_INTERRUPT))) - ; - - /* Enable test mode */ - net2272_write(dev, USBTEST, mode); - - /* load test packet */ - if (mode == USB_TEST_PACKET) { - /* switch to 8 bit mode */ - net2272_write(dev, LOCCTL, net2272_read(dev, LOCCTL) & - ~(1 << DATA_WIDTH)); - - for (i = 0; i < sizeof(net2272_test_packet); ++i) - net2272_write(dev, EP_DATA, net2272_test_packet[i]); - - /* Validate test packet */ - net2272_write(dev, EP_TRANSFER0, 0); - } -} - -static void -net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat) -{ - struct net2272_ep *ep; - u8 num, scratch; - - /* starting a control request? */ - if (unlikely(stat & (1 << SETUP_PACKET_INTERRUPT))) { - union { - u8 raw[8]; - struct usb_ctrlrequest r; - } u; - int tmp = 0; - struct net2272_request *req; - - if (dev->gadget.speed == USB_SPEED_UNKNOWN) { - if (net2272_read(dev, USBCTL1) & (1 << USB_HIGH_SPEED)) - dev->gadget.speed = USB_SPEED_HIGH; - else - dev->gadget.speed = USB_SPEED_FULL; - dev_dbg(dev->dev, "%s\n", - usb_speed_string(dev->gadget.speed)); - } - - ep = &dev->ep[0]; - ep->irqs++; - - /* make sure any leftover interrupt state is cleared */ - stat &= ~(1 << ENDPOINT_0_INTERRUPT); - while (!list_empty(&ep->queue)) { - req = list_entry(ep->queue.next, - struct net2272_request, queue); - net2272_done(ep, req, - (req->req.actual == req->req.length) ? 0 : -EPROTO); - } - ep->stopped = 0; - dev->protocol_stall = 0; - net2272_ep_write(ep, EP_STAT0, - (1 << DATA_IN_TOKEN_INTERRUPT) - | (1 << DATA_OUT_TOKEN_INTERRUPT) - | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT) - | (1 << DATA_PACKET_RECEIVED_INTERRUPT) - | (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)); - net2272_ep_write(ep, EP_STAT1, - (1 << TIMEOUT) - | (1 << USB_OUT_ACK_SENT) - | (1 << USB_OUT_NAK_SENT) - | (1 << USB_IN_ACK_RCVD) - | (1 << USB_IN_NAK_SENT) - | (1 << USB_STALL_SENT) - | (1 << LOCAL_OUT_ZLP)); - - /* - * Ensure Control Read pre-validation setting is beyond maximum size - * - Control Writes can leave non-zero values in EP_TRANSFER. If - * an EP0 transfer following the Control Write is a Control Read, - * the NET2272 sees the non-zero EP_TRANSFER as an unexpected - * pre-validation count. - * - Setting EP_TRANSFER beyond the maximum EP0 transfer size ensures - * the pre-validation count cannot cause an unexpected validatation - */ - net2272_write(dev, PAGESEL, 0); - net2272_write(dev, EP_TRANSFER2, 0xff); - net2272_write(dev, EP_TRANSFER1, 0xff); - net2272_write(dev, EP_TRANSFER0, 0xff); - - u.raw[0] = net2272_read(dev, SETUP0); - u.raw[1] = net2272_read(dev, SETUP1); - u.raw[2] = net2272_read(dev, SETUP2); - u.raw[3] = net2272_read(dev, SETUP3); - u.raw[4] = net2272_read(dev, SETUP4); - u.raw[5] = net2272_read(dev, SETUP5); - u.raw[6] = net2272_read(dev, SETUP6); - u.raw[7] = net2272_read(dev, SETUP7); - /* - * If you have a big endian cpu make sure le16_to_cpus - * performs the proper byte swapping here... - */ - le16_to_cpus(&u.r.wValue); - le16_to_cpus(&u.r.wIndex); - le16_to_cpus(&u.r.wLength); - - /* ack the irq */ - net2272_write(dev, IRQSTAT0, 1 << SETUP_PACKET_INTERRUPT); - stat ^= (1 << SETUP_PACKET_INTERRUPT); - - /* watch control traffic at the token level, and force - * synchronization before letting the status phase happen. - */ - ep->is_in = (u.r.bRequestType & USB_DIR_IN) != 0; - if (ep->is_in) { - scratch = (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE) - | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE) - | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE); - stop_out_naking(ep); - } else - scratch = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE) - | (1 << DATA_OUT_TOKEN_INTERRUPT_ENABLE) - | (1 << DATA_IN_TOKEN_INTERRUPT_ENABLE); - net2272_ep_write(ep, EP_IRQENB, scratch); - - if ((u.r.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD) - goto delegate; - switch (u.r.bRequest) { - case USB_REQ_GET_STATUS: { - struct net2272_ep *e; - u16 status = 0; - - switch (u.r.bRequestType & USB_RECIP_MASK) { - case USB_RECIP_ENDPOINT: - e = net2272_get_ep_by_addr(dev, u.r.wIndex); - if (!e || u.r.wLength > 2) - goto do_stall; - if (net2272_ep_read(e, EP_RSPSET) & (1 << ENDPOINT_HALT)) - status = cpu_to_le16(1); - else - status = cpu_to_le16(0); - - /* don't bother with a request object! */ - net2272_ep_write(&dev->ep[0], EP_IRQENB, 0); - writew(status, net2272_reg_addr(dev, EP_DATA)); - set_fifo_bytecount(&dev->ep[0], 0); - allow_status(ep); - dev_vdbg(dev->dev, "%s stat %02x\n", - ep->ep.name, status); - goto next_endpoints; - case USB_RECIP_DEVICE: - if (u.r.wLength > 2) - goto do_stall; - if (dev->gadget.is_selfpowered) - status = (1 << USB_DEVICE_SELF_POWERED); - - /* don't bother with a request object! */ - net2272_ep_write(&dev->ep[0], EP_IRQENB, 0); - writew(status, net2272_reg_addr(dev, EP_DATA)); - set_fifo_bytecount(&dev->ep[0], 0); - allow_status(ep); - dev_vdbg(dev->dev, "device stat %02x\n", status); - goto next_endpoints; - case USB_RECIP_INTERFACE: - if (u.r.wLength > 2) - goto do_stall; - - /* don't bother with a request object! */ - net2272_ep_write(&dev->ep[0], EP_IRQENB, 0); - writew(status, net2272_reg_addr(dev, EP_DATA)); - set_fifo_bytecount(&dev->ep[0], 0); - allow_status(ep); - dev_vdbg(dev->dev, "interface status %02x\n", status); - goto next_endpoints; - } - - break; - } - case USB_REQ_CLEAR_FEATURE: { - struct net2272_ep *e; - - if (u.r.bRequestType != USB_RECIP_ENDPOINT) - goto delegate; - if (u.r.wValue != USB_ENDPOINT_HALT || - u.r.wLength != 0) - goto do_stall; - e = net2272_get_ep_by_addr(dev, u.r.wIndex); - if (!e) - goto do_stall; - if (e->wedged) { - dev_vdbg(dev->dev, "%s wedged, halt not cleared\n", - ep->ep.name); - } else { - dev_vdbg(dev->dev, "%s clear halt\n", ep->ep.name); - clear_halt(e); - } - allow_status(ep); - goto next_endpoints; - } - case USB_REQ_SET_FEATURE: { - struct net2272_ep *e; - - if (u.r.bRequestType == USB_RECIP_DEVICE) { - if (u.r.wIndex != NORMAL_OPERATION) - net2272_set_test_mode(dev, (u.r.wIndex >> 8)); - allow_status(ep); - dev_vdbg(dev->dev, "test mode: %d\n", u.r.wIndex); - goto next_endpoints; - } else if (u.r.bRequestType != USB_RECIP_ENDPOINT) - goto delegate; - if (u.r.wValue != USB_ENDPOINT_HALT || - u.r.wLength != 0) - goto do_stall; - e = net2272_get_ep_by_addr(dev, u.r.wIndex); - if (!e) - goto do_stall; - set_halt(e); - allow_status(ep); - dev_vdbg(dev->dev, "%s set halt\n", ep->ep.name); - goto next_endpoints; - } - case USB_REQ_SET_ADDRESS: { - net2272_write(dev, OURADDR, u.r.wValue & 0xff); - allow_status(ep); - break; - } - default: - delegate: - dev_vdbg(dev->dev, "setup %02x.%02x v%04x i%04x " - "ep_cfg %08x\n", - u.r.bRequestType, u.r.bRequest, - u.r.wValue, u.r.wIndex, - net2272_ep_read(ep, EP_CFG)); - if (dev->async_callbacks) { - spin_unlock(&dev->lock); - tmp = dev->driver->setup(&dev->gadget, &u.r); - spin_lock(&dev->lock); - } - } - - /* stall ep0 on error */ - if (tmp < 0) { - do_stall: - dev_vdbg(dev->dev, "req %02x.%02x protocol STALL; stat %d\n", - u.r.bRequestType, u.r.bRequest, tmp); - dev->protocol_stall = 1; - } - /* endpoint dma irq? */ - } else if (stat & (1 << DMA_DONE_INTERRUPT)) { - net2272_cancel_dma(dev); - net2272_write(dev, IRQSTAT0, 1 << DMA_DONE_INTERRUPT); - stat &= ~(1 << DMA_DONE_INTERRUPT); - num = (net2272_read(dev, DMAREQ) & (1 << DMA_ENDPOINT_SELECT)) - ? 2 : 1; - - ep = &dev->ep[num]; - net2272_handle_dma(ep); - } - - next_endpoints: - /* endpoint data irq? */ - scratch = stat & 0x0f; - stat &= ~0x0f; - for (num = 0; scratch; num++) { - u8 t; - - /* does this endpoint's FIFO and queue need tending? */ - t = 1 << num; - if ((scratch & t) == 0) - continue; - scratch ^= t; - - ep = &dev->ep[num]; - net2272_handle_ep(ep); - } - - /* some interrupts we can just ignore */ - stat &= ~(1 << SOF_INTERRUPT); - - if (stat) - dev_dbg(dev->dev, "unhandled irqstat0 %02x\n", stat); -} - -static void -net2272_handle_stat1_irqs(struct net2272 *dev, u8 stat) -{ - u8 tmp, mask; - - /* after disconnect there's nothing else to do! */ - tmp = (1 << VBUS_INTERRUPT) | (1 << ROOT_PORT_RESET_INTERRUPT); - mask = (1 << USB_HIGH_SPEED) | (1 << USB_FULL_SPEED); - - if (stat & tmp) { - bool reset = false; - bool disconnect = false; - - /* - * Ignore disconnects and resets if the speed hasn't been set. - * VBUS can bounce and there's always an initial reset. - */ - net2272_write(dev, IRQSTAT1, tmp); - if (dev->gadget.speed != USB_SPEED_UNKNOWN) { - if ((stat & (1 << VBUS_INTERRUPT)) && - (net2272_read(dev, USBCTL1) & - (1 << VBUS_PIN)) == 0) { - disconnect = true; - dev_dbg(dev->dev, "disconnect %s\n", - dev->driver->driver.name); - } else if ((stat & (1 << ROOT_PORT_RESET_INTERRUPT)) && - (net2272_read(dev, USBCTL1) & mask) - == 0) { - reset = true; - dev_dbg(dev->dev, "reset %s\n", - dev->driver->driver.name); - } - - if (disconnect || reset) { - stop_activity(dev, dev->driver); - net2272_ep0_start(dev); - if (dev->async_callbacks) { - spin_unlock(&dev->lock); - if (reset) - usb_gadget_udc_reset(&dev->gadget, dev->driver); - else - (dev->driver->disconnect)(&dev->gadget); - spin_lock(&dev->lock); - } - return; - } - } - stat &= ~tmp; - - if (!stat) - return; - } - - tmp = (1 << SUSPEND_REQUEST_CHANGE_INTERRUPT); - if (stat & tmp) { - net2272_write(dev, IRQSTAT1, tmp); - if (stat & (1 << SUSPEND_REQUEST_INTERRUPT)) { - if (dev->async_callbacks && dev->driver->suspend) - dev->driver->suspend(&dev->gadget); - if (!enable_suspend) { - stat &= ~(1 << SUSPEND_REQUEST_INTERRUPT); - dev_dbg(dev->dev, "Suspend disabled, ignoring\n"); - } - } else { - if (dev->async_callbacks && dev->driver->resume) - dev->driver->resume(&dev->gadget); - } - stat &= ~tmp; - } - - /* clear any other status/irqs */ - if (stat) - net2272_write(dev, IRQSTAT1, stat); - - /* some status we can just ignore */ - stat &= ~((1 << CONTROL_STATUS_INTERRUPT) - | (1 << SUSPEND_REQUEST_INTERRUPT) - | (1 << RESUME_INTERRUPT)); - if (!stat) - return; - else - dev_dbg(dev->dev, "unhandled irqstat1 %02x\n", stat); -} - -static irqreturn_t net2272_irq(int irq, void *_dev) -{ - struct net2272 *dev = _dev; -#if defined(PLX_PCI_RDK) || defined(PLX_PCI_RDK2) - u32 intcsr; -#endif -#if defined(PLX_PCI_RDK) - u8 dmareq; -#endif - spin_lock(&dev->lock); -#if defined(PLX_PCI_RDK) - intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR); - - if ((intcsr & LOCAL_INTERRUPT_TEST) == LOCAL_INTERRUPT_TEST) { - writel(intcsr & ~(1 << PCI_INTERRUPT_ENABLE), - dev->rdk1.plx9054_base_addr + INTCSR); - net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1)); - net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0)); - intcsr = readl(dev->rdk1.plx9054_base_addr + INTCSR); - writel(intcsr | (1 << PCI_INTERRUPT_ENABLE), - dev->rdk1.plx9054_base_addr + INTCSR); - } - if ((intcsr & DMA_CHANNEL_0_TEST) == DMA_CHANNEL_0_TEST) { - writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)), - dev->rdk1.plx9054_base_addr + DMACSR0); - - dmareq = net2272_read(dev, DMAREQ); - if (dmareq & 0x01) - net2272_handle_dma(&dev->ep[2]); - else - net2272_handle_dma(&dev->ep[1]); - } -#endif -#if defined(PLX_PCI_RDK2) - /* see if PCI int for us by checking irqstat */ - intcsr = readl(dev->rdk2.fpga_base_addr + RDK2_IRQSTAT); - if (!(intcsr & (1 << NET2272_PCI_IRQ))) { - spin_unlock(&dev->lock); - return IRQ_NONE; - } - /* check dma interrupts */ -#endif - /* Platform/devcice interrupt handler */ -#if !defined(PLX_PCI_RDK) - net2272_handle_stat1_irqs(dev, net2272_read(dev, IRQSTAT1)); - net2272_handle_stat0_irqs(dev, net2272_read(dev, IRQSTAT0)); -#endif - spin_unlock(&dev->lock); - - return IRQ_HANDLED; -} - -static int net2272_present(struct net2272 *dev) -{ - /* - * Quick test to see if CPU can communicate properly with the NET2272. - * Verifies connection using writes and reads to write/read and - * read-only registers. - * - * This routine is strongly recommended especially during early bring-up - * of new hardware, however for designs that do not apply Power On System - * Tests (POST) it may discarded (or perhaps minimized). - */ - unsigned int ii; - u8 val, refval; - - /* Verify NET2272 write/read SCRATCH register can write and read */ - refval = net2272_read(dev, SCRATCH); - for (ii = 0; ii < 0x100; ii += 7) { - net2272_write(dev, SCRATCH, ii); - val = net2272_read(dev, SCRATCH); - if (val != ii) { - dev_dbg(dev->dev, - "%s: write/read SCRATCH register test failed: " - "wrote:0x%2.2x, read:0x%2.2x\n", - __func__, ii, val); - return -EINVAL; - } - } - /* To be nice, we write the original SCRATCH value back: */ - net2272_write(dev, SCRATCH, refval); - - /* Verify NET2272 CHIPREV register is read-only: */ - refval = net2272_read(dev, CHIPREV_2272); - for (ii = 0; ii < 0x100; ii += 7) { - net2272_write(dev, CHIPREV_2272, ii); - val = net2272_read(dev, CHIPREV_2272); - if (val != refval) { - dev_dbg(dev->dev, - "%s: write/read CHIPREV register test failed: " - "wrote 0x%2.2x, read:0x%2.2x expected:0x%2.2x\n", - __func__, ii, val, refval); - return -EINVAL; - } - } - - /* - * Verify NET2272's "NET2270 legacy revision" register - * - NET2272 has two revision registers. The NET2270 legacy revision - * register should read the same value, regardless of the NET2272 - * silicon revision. The legacy register applies to NET2270 - * firmware being applied to the NET2272. - */ - val = net2272_read(dev, CHIPREV_LEGACY); - if (val != NET2270_LEGACY_REV) { - /* - * Unexpected legacy revision value - * - Perhaps the chip is a NET2270? - */ - dev_dbg(dev->dev, - "%s: WARNING: UNEXPECTED NET2272 LEGACY REGISTER VALUE:\n" - " - CHIPREV_LEGACY: expected 0x%2.2x, got:0x%2.2x. (Not NET2272?)\n", - __func__, NET2270_LEGACY_REV, val); - return -EINVAL; - } - - /* - * Verify NET2272 silicon revision - * - This revision register is appropriate for the silicon version - * of the NET2272 - */ - val = net2272_read(dev, CHIPREV_2272); - switch (val) { - case CHIPREV_NET2272_R1: - /* - * NET2272 Rev 1 has DMA related errata: - * - Newer silicon (Rev 1A or better) required - */ - dev_dbg(dev->dev, - "%s: Rev 1 detected: newer silicon recommended for DMA support\n", - __func__); - break; - case CHIPREV_NET2272_R1A: - break; - default: - /* NET2272 silicon version *may* not work with this firmware */ - dev_dbg(dev->dev, - "%s: unexpected silicon revision register value: " - " CHIPREV_2272: 0x%2.2x\n", - __func__, val); - /* - * Return Success, even though the chip rev is not an expected value - * - Older, pre-built firmware can attempt to operate on newer silicon - * - Often, new silicon is perfectly compatible - */ - } - - /* Success: NET2272 checks out OK */ - return 0; -} - -static void -net2272_gadget_release(struct device *_dev) -{ - struct net2272 *dev = container_of(_dev, struct net2272, gadget.dev); - - kfree(dev); -} - -/*---------------------------------------------------------------------------*/ - -static void -net2272_remove(struct net2272 *dev) -{ - if (dev->added) - usb_del_gadget(&dev->gadget); - free_irq(dev->irq, dev); - iounmap(dev->base_addr); - device_remove_file(dev->dev, &dev_attr_registers); - - dev_info(dev->dev, "unbind\n"); -} - -static struct net2272 *net2272_probe_init(struct device *dev, unsigned int irq) -{ - struct net2272 *ret; - - if (!irq) { - dev_dbg(dev, "No IRQ!\n"); - return ERR_PTR(-ENODEV); - } - - /* alloc, and start init */ - ret = kzalloc(sizeof(*ret), GFP_KERNEL); - if (!ret) - return ERR_PTR(-ENOMEM); - - spin_lock_init(&ret->lock); - ret->irq = irq; - ret->dev = dev; - ret->gadget.ops = &net2272_ops; - ret->gadget.max_speed = USB_SPEED_HIGH; - - /* the "gadget" abstracts/virtualizes the controller */ - ret->gadget.name = driver_name; - usb_initialize_gadget(dev, &ret->gadget, net2272_gadget_release); - - return ret; -} - -static int -net2272_probe_fin(struct net2272 *dev, unsigned int irqflags) -{ - int ret; - - /* See if there... */ - if (net2272_present(dev)) { - dev_warn(dev->dev, "2272 not found!\n"); - ret = -ENODEV; - goto err; - } - - net2272_usb_reset(dev); - net2272_usb_reinit(dev); - - ret = request_irq(dev->irq, net2272_irq, irqflags, driver_name, dev); - if (ret) { - dev_err(dev->dev, "request interrupt %i failed\n", dev->irq); - goto err; - } - - dev->chiprev = net2272_read(dev, CHIPREV_2272); - - /* done */ - dev_info(dev->dev, "%s\n", driver_desc); - dev_info(dev->dev, "irq %i, mem %p, chip rev %04x, dma %s\n", - dev->irq, dev->base_addr, dev->chiprev, - dma_mode_string()); - dev_info(dev->dev, "version: %s\n", driver_vers); - - ret = device_create_file(dev->dev, &dev_attr_registers); - if (ret) - goto err_irq; - - ret = usb_add_gadget(&dev->gadget); - if (ret) - goto err_add_udc; - dev->added = 1; - - return 0; - -err_add_udc: - device_remove_file(dev->dev, &dev_attr_registers); - err_irq: - free_irq(dev->irq, dev); - err: - return ret; -} - -#ifdef CONFIG_USB_PCI - -/* - * wrap this driver around the specified device, but - * don't respond over USB until a gadget driver binds to us - */ - -static int -net2272_rdk1_probe(struct pci_dev *pdev, struct net2272 *dev) -{ - unsigned long resource, len, tmp; - void __iomem *mem_mapped_addr[4]; - int ret, i; - - /* - * BAR 0 holds PLX 9054 config registers - * BAR 1 is i/o memory; unused here - * BAR 2 holds EPLD config registers - * BAR 3 holds NET2272 registers - */ - - /* Find and map all address spaces */ - for (i = 0; i < 4; ++i) { - if (i == 1) - continue; /* BAR1 unused */ - - resource = pci_resource_start(pdev, i); - len = pci_resource_len(pdev, i); - - if (!request_mem_region(resource, len, driver_name)) { - dev_dbg(dev->dev, "controller already in use\n"); - ret = -EBUSY; - goto err; - } - - mem_mapped_addr[i] = ioremap(resource, len); - if (mem_mapped_addr[i] == NULL) { - release_mem_region(resource, len); - dev_dbg(dev->dev, "can't map memory\n"); - ret = -EFAULT; - goto err; - } - } - - dev->rdk1.plx9054_base_addr = mem_mapped_addr[0]; - dev->rdk1.epld_base_addr = mem_mapped_addr[2]; - dev->base_addr = mem_mapped_addr[3]; - - /* Set PLX 9054 bus width (16 bits) */ - tmp = readl(dev->rdk1.plx9054_base_addr + LBRD1); - writel((tmp & ~(3 << MEMORY_SPACE_LOCAL_BUS_WIDTH)) | W16_BIT, - dev->rdk1.plx9054_base_addr + LBRD1); - - /* Enable PLX 9054 Interrupts */ - writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) | - (1 << PCI_INTERRUPT_ENABLE) | - (1 << LOCAL_INTERRUPT_INPUT_ENABLE), - dev->rdk1.plx9054_base_addr + INTCSR); - - writeb((1 << CHANNEL_CLEAR_INTERRUPT | (0 << CHANNEL_ENABLE)), - dev->rdk1.plx9054_base_addr + DMACSR0); - - /* reset */ - writeb((1 << EPLD_DMA_ENABLE) | - (1 << DMA_CTL_DACK) | - (1 << DMA_TIMEOUT_ENABLE) | - (1 << USER) | - (0 << MPX_MODE) | - (1 << BUSWIDTH) | - (1 << NET2272_RESET), - dev->base_addr + EPLD_IO_CONTROL_REGISTER); - - mb(); - writeb(readb(dev->base_addr + EPLD_IO_CONTROL_REGISTER) & - ~(1 << NET2272_RESET), - dev->base_addr + EPLD_IO_CONTROL_REGISTER); - udelay(200); - - return 0; - - err: - while (--i >= 0) { - if (i == 1) - continue; /* BAR1 unused */ - iounmap(mem_mapped_addr[i]); - release_mem_region(pci_resource_start(pdev, i), - pci_resource_len(pdev, i)); - } - - return ret; -} - -static int -net2272_rdk2_probe(struct pci_dev *pdev, struct net2272 *dev) -{ - unsigned long resource, len; - void __iomem *mem_mapped_addr[2]; - int ret, i; - - /* - * BAR 0 holds FGPA config registers - * BAR 1 holds NET2272 registers - */ - - /* Find and map all address spaces, bar2-3 unused in rdk 2 */ - for (i = 0; i < 2; ++i) { - resource = pci_resource_start(pdev, i); - len = pci_resource_len(pdev, i); - - if (!request_mem_region(resource, len, driver_name)) { - dev_dbg(dev->dev, "controller already in use\n"); - ret = -EBUSY; - goto err; - } - - mem_mapped_addr[i] = ioremap(resource, len); - if (mem_mapped_addr[i] == NULL) { - release_mem_region(resource, len); - dev_dbg(dev->dev, "can't map memory\n"); - ret = -EFAULT; - goto err; - } - } - - dev->rdk2.fpga_base_addr = mem_mapped_addr[0]; - dev->base_addr = mem_mapped_addr[1]; - - mb(); - /* Set 2272 bus width (16 bits) and reset */ - writel((1 << CHIP_RESET), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK); - udelay(200); - writel((1 << BUS_WIDTH), dev->rdk2.fpga_base_addr + RDK2_LOCCTLRDK); - /* Print fpga version number */ - dev_info(dev->dev, "RDK2 FPGA version %08x\n", - readl(dev->rdk2.fpga_base_addr + RDK2_FPGAREV)); - /* Enable FPGA Interrupts */ - writel((1 << NET2272_PCI_IRQ), dev->rdk2.fpga_base_addr + RDK2_IRQENB); - - return 0; - - err: - while (--i >= 0) { - iounmap(mem_mapped_addr[i]); - release_mem_region(pci_resource_start(pdev, i), - pci_resource_len(pdev, i)); - } - - return ret; -} - -static int -net2272_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) -{ - struct net2272 *dev; - int ret; - - dev = net2272_probe_init(&pdev->dev, pdev->irq); - if (IS_ERR(dev)) - return PTR_ERR(dev); - dev->dev_id = pdev->device; - - if (pci_enable_device(pdev) < 0) { - ret = -ENODEV; - goto err_put; - } - - pci_set_master(pdev); - - switch (pdev->device) { - case PCI_DEVICE_ID_RDK1: ret = net2272_rdk1_probe(pdev, dev); break; - case PCI_DEVICE_ID_RDK2: ret = net2272_rdk2_probe(pdev, dev); break; - default: BUG(); - } - if (ret) - goto err_pci; - - ret = net2272_probe_fin(dev, 0); - if (ret) - goto err_pci; - - pci_set_drvdata(pdev, dev); - - return 0; - - err_pci: - pci_disable_device(pdev); - err_put: - usb_put_gadget(&dev->gadget); - - return ret; -} - -static void -net2272_rdk1_remove(struct pci_dev *pdev, struct net2272 *dev) -{ - int i; - - /* disable PLX 9054 interrupts */ - writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) & - ~(1 << PCI_INTERRUPT_ENABLE), - dev->rdk1.plx9054_base_addr + INTCSR); - - /* clean up resources allocated during probe() */ - iounmap(dev->rdk1.plx9054_base_addr); - iounmap(dev->rdk1.epld_base_addr); - - for (i = 0; i < 4; ++i) { - if (i == 1) - continue; /* BAR1 unused */ - release_mem_region(pci_resource_start(pdev, i), - pci_resource_len(pdev, i)); - } -} - -static void -net2272_rdk2_remove(struct pci_dev *pdev, struct net2272 *dev) -{ - int i; - - /* disable fpga interrupts - writel(readl(dev->rdk1.plx9054_base_addr + INTCSR) & - ~(1 << PCI_INTERRUPT_ENABLE), - dev->rdk1.plx9054_base_addr + INTCSR); - */ - - /* clean up resources allocated during probe() */ - iounmap(dev->rdk2.fpga_base_addr); - - for (i = 0; i < 2; ++i) - release_mem_region(pci_resource_start(pdev, i), - pci_resource_len(pdev, i)); -} - -static void -net2272_pci_remove(struct pci_dev *pdev) -{ - struct net2272 *dev = pci_get_drvdata(pdev); - - net2272_remove(dev); - - switch (pdev->device) { - case PCI_DEVICE_ID_RDK1: net2272_rdk1_remove(pdev, dev); break; - case PCI_DEVICE_ID_RDK2: net2272_rdk2_remove(pdev, dev); break; - default: BUG(); - } - - pci_disable_device(pdev); - - usb_put_gadget(&dev->gadget); -} - -/* Table of matching PCI IDs */ -static struct pci_device_id pci_ids[] = { - { /* RDK 1 card */ - .class = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe), - .class_mask = 0, - .vendor = PCI_VENDOR_ID_PLX, - .device = PCI_DEVICE_ID_RDK1, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - }, - { /* RDK 2 card */ - .class = ((PCI_CLASS_BRIDGE_OTHER << 8) | 0xfe), - .class_mask = 0, - .vendor = PCI_VENDOR_ID_PLX, - .device = PCI_DEVICE_ID_RDK2, - .subvendor = PCI_ANY_ID, - .subdevice = PCI_ANY_ID, - }, - { } -}; -MODULE_DEVICE_TABLE(pci, pci_ids); - -static struct pci_driver net2272_pci_driver = { - .name = driver_name, - .id_table = pci_ids, - - .probe = net2272_pci_probe, - .remove = net2272_pci_remove, -}; - -static int net2272_pci_register(void) -{ - return pci_register_driver(&net2272_pci_driver); -} - -static void net2272_pci_unregister(void) -{ - pci_unregister_driver(&net2272_pci_driver); -} - -#else -static inline int net2272_pci_register(void) { return 0; } -static inline void net2272_pci_unregister(void) { } -#endif - -/*---------------------------------------------------------------------------*/ - -static int -net2272_plat_probe(struct platform_device *pdev) -{ - struct net2272 *dev; - int ret; - unsigned int irqflags; - resource_size_t base, len; - struct resource *iomem, *iomem_bus, *irq_res; - - irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - iomem_bus = platform_get_resource(pdev, IORESOURCE_BUS, 0); - if (!irq_res || !iomem) { - dev_err(&pdev->dev, "must provide irq/base addr"); - return -EINVAL; - } - - dev = net2272_probe_init(&pdev->dev, irq_res->start); - if (IS_ERR(dev)) - return PTR_ERR(dev); - - irqflags = 0; - if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) - irqflags |= IRQF_TRIGGER_RISING; - if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) - irqflags |= IRQF_TRIGGER_FALLING; - if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) - irqflags |= IRQF_TRIGGER_HIGH; - if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) - irqflags |= IRQF_TRIGGER_LOW; - - base = iomem->start; - len = resource_size(iomem); - if (iomem_bus) - dev->base_shift = iomem_bus->start; - - if (!request_mem_region(base, len, driver_name)) { - dev_dbg(dev->dev, "get request memory region!\n"); - ret = -EBUSY; - goto err; - } - dev->base_addr = ioremap(base, len); - if (!dev->base_addr) { - dev_dbg(dev->dev, "can't map memory\n"); - ret = -EFAULT; - goto err_req; - } - - ret = net2272_probe_fin(dev, IRQF_TRIGGER_LOW); - if (ret) - goto err_io; - - platform_set_drvdata(pdev, dev); - dev_info(&pdev->dev, "running in 16-bit, %sbyte swap local bus mode\n", - (net2272_read(dev, LOCCTL) & (1 << BYTE_SWAP)) ? "" : "no "); - - return 0; - - err_io: - iounmap(dev->base_addr); - err_req: - release_mem_region(base, len); - err: - usb_put_gadget(&dev->gadget); - - return ret; -} - -static void -net2272_plat_remove(struct platform_device *pdev) -{ - struct net2272 *dev = platform_get_drvdata(pdev); - - net2272_remove(dev); - - release_mem_region(pdev->resource[0].start, - resource_size(&pdev->resource[0])); - - usb_put_gadget(&dev->gadget); -} - -static struct platform_driver net2272_plat_driver = { - .probe = net2272_plat_probe, - .remove_new = net2272_plat_remove, - .driver = { - .name = driver_name, - }, - /* FIXME .suspend, .resume */ -}; -MODULE_ALIAS("platform:net2272"); - -static int __init net2272_init(void) -{ - int ret; - - ret = net2272_pci_register(); - if (ret) - return ret; - ret = platform_driver_register(&net2272_plat_driver); - if (ret) - goto err_pci; - return ret; - -err_pci: - net2272_pci_unregister(); - return ret; -} -module_init(net2272_init); - -static void __exit net2272_cleanup(void) -{ - net2272_pci_unregister(); - platform_driver_unregister(&net2272_plat_driver); -} -module_exit(net2272_cleanup); - -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("PLX Technology, Inc."); -MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h deleted file mode 100644 index a9994f737588..000000000000 --- a/drivers/usb/gadget/udc/net2272.h +++ /dev/null @@ -1,584 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * PLX NET2272 high/full speed USB device controller - * - * Copyright (C) 2005-2006 PLX Technology, Inc. - * Copyright (C) 2006-2011 Analog Devices, Inc. - */ - -#ifndef __NET2272_H__ -#define __NET2272_H__ - -/* Main Registers */ -#define REGADDRPTR 0x00 -#define REGDATA 0x01 -#define IRQSTAT0 0x02 -#define ENDPOINT_0_INTERRUPT 0 -#define ENDPOINT_A_INTERRUPT 1 -#define ENDPOINT_B_INTERRUPT 2 -#define ENDPOINT_C_INTERRUPT 3 -#define VIRTUALIZED_ENDPOINT_INTERRUPT 4 -#define SETUP_PACKET_INTERRUPT 5 -#define DMA_DONE_INTERRUPT 6 -#define SOF_INTERRUPT 7 -#define IRQSTAT1 0x03 -#define CONTROL_STATUS_INTERRUPT 1 -#define VBUS_INTERRUPT 2 -#define SUSPEND_REQUEST_INTERRUPT 3 -#define SUSPEND_REQUEST_CHANGE_INTERRUPT 4 -#define RESUME_INTERRUPT 5 -#define ROOT_PORT_RESET_INTERRUPT 6 -#define RESET_STATUS 7 -#define PAGESEL 0x04 -#define DMAREQ 0x1c -#define DMA_ENDPOINT_SELECT 0 -#define DREQ_POLARITY 1 -#define DACK_POLARITY 2 -#define EOT_POLARITY 3 -#define DMA_CONTROL_DACK 4 -#define DMA_REQUEST_ENABLE 5 -#define DMA_REQUEST 6 -#define DMA_BUFFER_VALID 7 -#define SCRATCH 0x1d -#define IRQENB0 0x20 -#define ENDPOINT_0_INTERRUPT_ENABLE 0 -#define ENDPOINT_A_INTERRUPT_ENABLE 1 -#define ENDPOINT_B_INTERRUPT_ENABLE 2 -#define ENDPOINT_C_INTERRUPT_ENABLE 3 -#define VIRTUALIZED_ENDPOINT_INTERRUPT_ENABLE 4 -#define SETUP_PACKET_INTERRUPT_ENABLE 5 -#define DMA_DONE_INTERRUPT_ENABLE 6 -#define SOF_INTERRUPT_ENABLE 7 -#define IRQENB1 0x21 -#define VBUS_INTERRUPT_ENABLE 2 -#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3 -#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 4 -#define RESUME_INTERRUPT_ENABLE 5 -#define ROOT_PORT_RESET_INTERRUPT_ENABLE 6 -#define LOCCTL 0x22 -#define DATA_WIDTH 0 -#define LOCAL_CLOCK_OUTPUT 1 -#define LOCAL_CLOCK_OUTPUT_OFF 0 -#define LOCAL_CLOCK_OUTPUT_3_75MHZ 1 -#define LOCAL_CLOCK_OUTPUT_7_5MHZ 2 -#define LOCAL_CLOCK_OUTPUT_15MHZ 3 -#define LOCAL_CLOCK_OUTPUT_30MHZ 4 -#define LOCAL_CLOCK_OUTPUT_60MHZ 5 -#define DMA_SPLIT_BUS_MODE 4 -#define BYTE_SWAP 5 -#define BUFFER_CONFIGURATION 6 -#define BUFFER_CONFIGURATION_EPA512_EPB512 0 -#define BUFFER_CONFIGURATION_EPA1024_EPB512 1 -#define BUFFER_CONFIGURATION_EPA1024_EPB1024 2 -#define BUFFER_CONFIGURATION_EPA1024DB 3 -#define CHIPREV_LEGACY 0x23 -#define NET2270_LEGACY_REV 0x40 -#define LOCCTL1 0x24 -#define DMA_MODE 0 -#define SLOW_DREQ 0 -#define FAST_DREQ 1 -#define BURST_MODE 2 -#define DMA_DACK_ENABLE 2 -#define CHIPREV_2272 0x25 -#define CHIPREV_NET2272_R1 0x10 -#define CHIPREV_NET2272_R1A 0x11 -/* USB Registers */ -#define USBCTL0 0x18 -#define IO_WAKEUP_ENABLE 1 -#define USB_DETECT_ENABLE 3 -#define USB_ROOT_PORT_WAKEUP_ENABLE 5 -#define USBCTL1 0x19 -#define VBUS_PIN 0 -#define USB_FULL_SPEED 1 -#define USB_HIGH_SPEED 2 -#define GENERATE_RESUME 3 -#define VIRTUAL_ENDPOINT_ENABLE 4 -#define FRAME0 0x1a -#define FRAME1 0x1b -#define OURADDR 0x30 -#define FORCE_IMMEDIATE 7 -#define USBDIAG 0x31 -#define FORCE_TRANSMIT_CRC_ERROR 0 -#define PREVENT_TRANSMIT_BIT_STUFF 1 -#define FORCE_RECEIVE_ERROR 2 -#define FAST_TIMES 4 -#define USBTEST 0x32 -#define TEST_MODE_SELECT 0 -#define NORMAL_OPERATION 0 -#define XCVRDIAG 0x33 -#define FORCE_FULL_SPEED 2 -#define FORCE_HIGH_SPEED 3 -#define OPMODE 4 -#define NORMAL_OPERATION 0 -#define NON_DRIVING 1 -#define DISABLE_BITSTUFF_AND_NRZI_ENCODE 2 -#define LINESTATE 6 -#define SE0_STATE 0 -#define J_STATE 1 -#define K_STATE 2 -#define SE1_STATE 3 -#define VIRTOUT0 0x34 -#define VIRTOUT1 0x35 -#define VIRTIN0 0x36 -#define VIRTIN1 0x37 -#define SETUP0 0x40 -#define SETUP1 0x41 -#define SETUP2 0x42 -#define SETUP3 0x43 -#define SETUP4 0x44 -#define SETUP5 0x45 -#define SETUP6 0x46 -#define SETUP7 0x47 -/* Endpoint Registers (Paged via PAGESEL) */ -#define EP_DATA 0x05 -#define EP_STAT0 0x06 -#define DATA_IN_TOKEN_INTERRUPT 0 -#define DATA_OUT_TOKEN_INTERRUPT 1 -#define DATA_PACKET_TRANSMITTED_INTERRUPT 2 -#define DATA_PACKET_RECEIVED_INTERRUPT 3 -#define SHORT_PACKET_TRANSFERRED_INTERRUPT 4 -#define NAK_OUT_PACKETS 5 -#define BUFFER_EMPTY 6 -#define BUFFER_FULL 7 -#define EP_STAT1 0x07 -#define TIMEOUT 0 -#define USB_OUT_ACK_SENT 1 -#define USB_OUT_NAK_SENT 2 -#define USB_IN_ACK_RCVD 3 -#define USB_IN_NAK_SENT 4 -#define USB_STALL_SENT 5 -#define LOCAL_OUT_ZLP 6 -#define BUFFER_FLUSH 7 -#define EP_TRANSFER0 0x08 -#define EP_TRANSFER1 0x09 -#define EP_TRANSFER2 0x0a -#define EP_IRQENB 0x0b -#define DATA_IN_TOKEN_INTERRUPT_ENABLE 0 -#define DATA_OUT_TOKEN_INTERRUPT_ENABLE 1 -#define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2 -#define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3 -#define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 4 -#define EP_AVAIL0 0x0c -#define EP_AVAIL1 0x0d -#define EP_RSPCLR 0x0e -#define EP_RSPSET 0x0f -#define ENDPOINT_HALT 0 -#define ENDPOINT_TOGGLE 1 -#define NAK_OUT_PACKETS_MODE 2 -#define CONTROL_STATUS_PHASE_HANDSHAKE 3 -#define INTERRUPT_MODE 4 -#define AUTOVALIDATE 5 -#define HIDE_STATUS_PHASE 6 -#define ALT_NAK_OUT_PACKETS 7 -#define EP_MAXPKT0 0x28 -#define EP_MAXPKT1 0x29 -#define ADDITIONAL_TRANSACTION_OPPORTUNITIES 3 -#define NONE_ADDITIONAL_TRANSACTION 0 -#define ONE_ADDITIONAL_TRANSACTION 1 -#define TWO_ADDITIONAL_TRANSACTION 2 -#define EP_CFG 0x2a -#define ENDPOINT_NUMBER 0 -#define ENDPOINT_DIRECTION 4 -#define ENDPOINT_TYPE 5 -#define ENDPOINT_ENABLE 7 -#define EP_HBW 0x2b -#define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 0 -#define DATA0_PID 0 -#define DATA1_PID 1 -#define DATA2_PID 2 -#define MDATA_PID 3 -#define EP_BUFF_STATES 0x2c -#define BUFFER_A_STATE 0 -#define BUFFER_B_STATE 2 -#define BUFF_FREE 0 -#define BUFF_VALID 1 -#define BUFF_LCL 2 -#define BUFF_USB 3 - -/*---------------------------------------------------------------------------*/ - -#define PCI_DEVICE_ID_RDK1 0x9054 - -/* PCI-RDK EPLD Registers */ -#define RDK_EPLD_IO_REGISTER1 0x00000000 -#define RDK_EPLD_USB_RESET 0 -#define RDK_EPLD_USB_POWERDOWN 1 -#define RDK_EPLD_USB_WAKEUP 2 -#define RDK_EPLD_USB_EOT 3 -#define RDK_EPLD_DPPULL 4 -#define RDK_EPLD_IO_REGISTER2 0x00000004 -#define RDK_EPLD_BUSWIDTH 0 -#define RDK_EPLD_USER 2 -#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 -#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 -#define RDK_EPLD_STATUS_REGISTER 0x00000008 -#define RDK_EPLD_USB_LRESET 0 -#define RDK_EPLD_REVISION_REGISTER 0x0000000c - -/* PCI-RDK PLX 9054 Registers */ -#define INTCSR 0x68 -#define PCI_INTERRUPT_ENABLE 8 -#define LOCAL_INTERRUPT_INPUT_ENABLE 11 -#define LOCAL_INPUT_INTERRUPT_ACTIVE 15 -#define LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE 18 -#define LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE 19 -#define DMA_CHANNEL_0_INTERRUPT_ACTIVE 21 -#define DMA_CHANNEL_1_INTERRUPT_ACTIVE 22 -#define CNTRL 0x6C -#define RELOAD_CONFIGURATION_REGISTERS 29 -#define PCI_ADAPTER_SOFTWARE_RESET 30 -#define DMAMODE0 0x80 -#define LOCAL_BUS_WIDTH 0 -#define INTERNAL_WAIT_STATES 2 -#define TA_READY_INPUT_ENABLE 6 -#define LOCAL_BURST_ENABLE 8 -#define SCATTER_GATHER_MODE 9 -#define DONE_INTERRUPT_ENABLE 10 -#define LOCAL_ADDRESSING_MODE 11 -#define DEMAND_MODE 12 -#define DMA_EOT_ENABLE 14 -#define FAST_SLOW_TERMINATE_MODE_SELECT 15 -#define DMA_CHANNEL_INTERRUPT_SELECT 17 -#define DMAPADR0 0x84 -#define DMALADR0 0x88 -#define DMASIZ0 0x8c -#define DMADPR0 0x90 -#define DESCRIPTOR_LOCATION 0 -#define END_OF_CHAIN 1 -#define INTERRUPT_AFTER_TERMINAL_COUNT 2 -#define DIRECTION_OF_TRANSFER 3 -#define DMACSR0 0xa8 -#define CHANNEL_ENABLE 0 -#define CHANNEL_START 1 -#define CHANNEL_ABORT 2 -#define CHANNEL_CLEAR_INTERRUPT 3 -#define CHANNEL_DONE 4 -#define DMATHR 0xb0 -#define LBRD1 0xf8 -#define MEMORY_SPACE_LOCAL_BUS_WIDTH 0 -#define W8_BIT 0 -#define W16_BIT 1 - -/* Special OR'ing of INTCSR bits */ -#define LOCAL_INTERRUPT_TEST \ - ((1 << LOCAL_INPUT_INTERRUPT_ACTIVE) | \ - (1 << LOCAL_INTERRUPT_INPUT_ENABLE)) - -#define DMA_CHANNEL_0_TEST \ - ((1 << DMA_CHANNEL_0_INTERRUPT_ACTIVE) | \ - (1 << LOCAL_DMA_CHANNEL_0_INTERRUPT_ENABLE)) - -#define DMA_CHANNEL_1_TEST \ - ((1 << DMA_CHANNEL_1_INTERRUPT_ACTIVE) | \ - (1 << LOCAL_DMA_CHANNEL_1_INTERRUPT_ENABLE)) - -/* EPLD Registers */ -#define RDK_EPLD_IO_REGISTER1 0x00000000 -#define RDK_EPLD_USB_RESET 0 -#define RDK_EPLD_USB_POWERDOWN 1 -#define RDK_EPLD_USB_WAKEUP 2 -#define RDK_EPLD_USB_EOT 3 -#define RDK_EPLD_DPPULL 4 -#define RDK_EPLD_IO_REGISTER2 0x00000004 -#define RDK_EPLD_BUSWIDTH 0 -#define RDK_EPLD_USER 2 -#define RDK_EPLD_RESET_INTERRUPT_ENABLE 3 -#define RDK_EPLD_DMA_TIMEOUT_ENABLE 4 -#define RDK_EPLD_STATUS_REGISTER 0x00000008 -#define RDK_EPLD_USB_LRESET 0 -#define RDK_EPLD_REVISION_REGISTER 0x0000000c - -#define EPLD_IO_CONTROL_REGISTER 0x400 -#define NET2272_RESET 0 -#define BUSWIDTH 1 -#define MPX_MODE 3 -#define USER 4 -#define DMA_TIMEOUT_ENABLE 5 -#define DMA_CTL_DACK 6 -#define EPLD_DMA_ENABLE 7 -#define EPLD_DMA_CONTROL_REGISTER 0x800 -#define SPLIT_DMA_MODE 0 -#define SPLIT_DMA_DIRECTION 1 -#define SPLIT_DMA_ENABLE 2 -#define SPLIT_DMA_INTERRUPT_ENABLE 3 -#define SPLIT_DMA_INTERRUPT 4 -#define EPLD_DMA_MODE 5 -#define EPLD_DMA_CONTROLLER_ENABLE 7 -#define SPLIT_DMA_ADDRESS_LOW 0xc00 -#define SPLIT_DMA_ADDRESS_HIGH 0x1000 -#define SPLIT_DMA_BYTE_COUNT_LOW 0x1400 -#define SPLIT_DMA_BYTE_COUNT_HIGH 0x1800 -#define EPLD_REVISION_REGISTER 0x1c00 -#define SPLIT_DMA_RAM 0x4000 -#define DMA_RAM_SIZE 0x1000 - -/*---------------------------------------------------------------------------*/ - -#define PCI_DEVICE_ID_RDK2 0x3272 - -/* PCI-RDK version 2 registers */ - -/* Main Control Registers */ - -#define RDK2_IRQENB 0x00 -#define RDK2_IRQSTAT 0x04 -#define PB7 23 -#define PB6 22 -#define PB5 21 -#define PB4 20 -#define PB3 19 -#define PB2 18 -#define PB1 17 -#define PB0 16 -#define GP3 23 -#define GP2 23 -#define GP1 23 -#define GP0 23 -#define DMA_RETRY_ABORT 6 -#define DMA_PAUSE_DONE 5 -#define DMA_ABORT_DONE 4 -#define DMA_OUT_FIFO_TRANSFER_DONE 3 -#define DMA_LOCAL_DONE 2 -#define DMA_PCI_DONE 1 -#define NET2272_PCI_IRQ 0 - -#define RDK2_LOCCTLRDK 0x08 -#define CHIP_RESET 3 -#define SPLIT_DMA 2 -#define MULTIPLEX_MODE 1 -#define BUS_WIDTH 0 - -#define RDK2_GPIOCTL 0x10 -#define GP3_OUT_ENABLE 7 -#define GP2_OUT_ENABLE 6 -#define GP1_OUT_ENABLE 5 -#define GP0_OUT_ENABLE 4 -#define GP3_DATA 3 -#define GP2_DATA 2 -#define GP1_DATA 1 -#define GP0_DATA 0 - -#define RDK2_LEDSW 0x14 -#define LED3 27 -#define LED2 26 -#define LED1 25 -#define LED0 24 -#define PBUTTON 16 -#define DIPSW 0 - -#define RDK2_DIAG 0x18 -#define RDK2_FAST_TIMES 2 -#define FORCE_PCI_SERR 1 -#define FORCE_PCI_INT 0 -#define RDK2_FPGAREV 0x1C - -/* Dma Control registers */ -#define RDK2_DMACTL 0x80 -#define ADDR_HOLD 24 -#define RETRY_COUNT 16 /* 23:16 */ -#define FIFO_THRESHOLD 11 /* 15:11 */ -#define MEM_WRITE_INVALIDATE 10 -#define READ_MULTIPLE 9 -#define READ_LINE 8 -#define RDK2_DMA_MODE 6 /* 7:6 */ -#define CONTROL_DACK 5 -#define EOT_ENABLE 4 -#define EOT_POLARITY 3 -#define DACK_POLARITY 2 -#define DREQ_POLARITY 1 -#define DMA_ENABLE 0 - -#define RDK2_DMASTAT 0x84 -#define GATHER_COUNT 12 /* 14:12 */ -#define FIFO_COUNT 6 /* 11:6 */ -#define FIFO_FLUSH 5 -#define FIFO_TRANSFER 4 -#define PAUSE_DONE 3 -#define ABORT_DONE 2 -#define DMA_ABORT 1 -#define DMA_START 0 - -#define RDK2_DMAPCICOUNT 0x88 -#define DMA_DIRECTION 31 -#define DMA_PCI_BYTE_COUNT 0 /* 0:23 */ - -#define RDK2_DMALOCCOUNT 0x8C /* 0:23 dma local byte count */ - -#define RDK2_DMAADDR 0x90 /* 2:31 PCI bus starting address */ - -/*---------------------------------------------------------------------------*/ - -#define REG_INDEXED_THRESHOLD (1 << 5) - -/* DRIVER DATA STRUCTURES and UTILITIES */ -struct net2272_ep { - struct usb_ep ep; - struct net2272 *dev; - unsigned long irqs; - - /* analogous to a host-side qh */ - struct list_head queue; - const struct usb_endpoint_descriptor *desc; - unsigned num:8, - fifo_size:12, - stopped:1, - wedged:1, - is_in:1, - is_iso:1, - dma:1, - not_empty:1; -}; - -struct net2272 { - /* each device provides one gadget, several endpoints */ - struct usb_gadget gadget; - struct device *dev; - unsigned short dev_id; - - spinlock_t lock; - struct net2272_ep ep[4]; - struct usb_gadget_driver *driver; - unsigned protocol_stall:1, - softconnect:1, - wakeup:1, - added:1, - async_callbacks:1, - dma_eot_polarity:1, - dma_dack_polarity:1, - dma_dreq_polarity:1, - dma_busy:1; - u16 chiprev; - u8 pagesel; - - unsigned int irq; - unsigned short fifo_mode; - - unsigned int base_shift; - u16 __iomem *base_addr; - union { -#ifdef CONFIG_USB_PCI - struct { - void __iomem *plx9054_base_addr; - void __iomem *epld_base_addr; - } rdk1; - struct { - /* Bar0, Bar1 is base_addr both mem-mapped */ - void __iomem *fpga_base_addr; - } rdk2; -#endif - }; -}; - -static void __iomem * -net2272_reg_addr(struct net2272 *dev, unsigned int reg) -{ - return dev->base_addr + (reg << dev->base_shift); -} - -static void -net2272_write(struct net2272 *dev, unsigned int reg, u8 value) -{ - if (reg >= REG_INDEXED_THRESHOLD) { - /* - * Indexed register; use REGADDRPTR/REGDATA - * - Save and restore REGADDRPTR. This prevents REGADDRPTR from - * changes between other code sections, but it is time consuming. - * - Performance tips: either do not save and restore REGADDRPTR (if it - * is safe) or do save/restore operations only in critical sections. - u8 tmp = readb(dev->base_addr + REGADDRPTR); - */ - writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); - writeb(value, net2272_reg_addr(dev, REGDATA)); - /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ - } else - writeb(value, net2272_reg_addr(dev, reg)); -} - -static u8 -net2272_read(struct net2272 *dev, unsigned int reg) -{ - u8 ret; - - if (reg >= REG_INDEXED_THRESHOLD) { - /* - * Indexed register; use REGADDRPTR/REGDATA - * - Save and restore REGADDRPTR. This prevents REGADDRPTR from - * changes between other code sections, but it is time consuming. - * - Performance tips: either do not save and restore REGADDRPTR (if it - * is safe) or do save/restore operations only in critical sections. - u8 tmp = readb(dev->base_addr + REGADDRPTR); - */ - writeb((u8)reg, net2272_reg_addr(dev, REGADDRPTR)); - ret = readb(net2272_reg_addr(dev, REGDATA)); - /* writeb(tmp, net2272_reg_addr(dev, REGADDRPTR)); */ - } else - ret = readb(net2272_reg_addr(dev, reg)); - - return ret; -} - -static void -net2272_ep_write(struct net2272_ep *ep, unsigned int reg, u8 value) -{ - struct net2272 *dev = ep->dev; - - if (dev->pagesel != ep->num) { - net2272_write(dev, PAGESEL, ep->num); - dev->pagesel = ep->num; - } - net2272_write(dev, reg, value); -} - -static u8 -net2272_ep_read(struct net2272_ep *ep, unsigned int reg) -{ - struct net2272 *dev = ep->dev; - - if (dev->pagesel != ep->num) { - net2272_write(dev, PAGESEL, ep->num); - dev->pagesel = ep->num; - } - return net2272_read(dev, reg); -} - -static void allow_status(struct net2272_ep *ep) -{ - /* ep0 only */ - net2272_ep_write(ep, EP_RSPCLR, - (1 << CONTROL_STATUS_PHASE_HANDSHAKE) | - (1 << ALT_NAK_OUT_PACKETS) | - (1 << NAK_OUT_PACKETS_MODE)); - ep->stopped = 1; -} - -static void set_halt(struct net2272_ep *ep) -{ - /* ep0 and bulk/intr endpoints */ - net2272_ep_write(ep, EP_RSPCLR, 1 << CONTROL_STATUS_PHASE_HANDSHAKE); - net2272_ep_write(ep, EP_RSPSET, 1 << ENDPOINT_HALT); -} - -static void clear_halt(struct net2272_ep *ep) -{ - /* ep0 and bulk/intr endpoints */ - net2272_ep_write(ep, EP_RSPCLR, - (1 << ENDPOINT_HALT) | (1 << ENDPOINT_TOGGLE)); -} - -/* count (<= 4) bytes in the next fifo write will be valid */ -static void set_fifo_bytecount(struct net2272_ep *ep, unsigned count) -{ - /* net2272_ep_write will truncate to u8 for us */ - net2272_ep_write(ep, EP_TRANSFER2, count >> 16); - net2272_ep_write(ep, EP_TRANSFER1, count >> 8); - net2272_ep_write(ep, EP_TRANSFER0, count); -} - -struct net2272_request { - struct usb_request req; - struct list_head queue; - unsigned mapped:1, - valid:1; -}; - -#endif diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 1b929c519cd7..8ea1adc7461d 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -56,7 +56,7 @@ #include <asm/byteorder.h> #include <asm/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #define DRIVER_DESC "PLX NET228x/USB338x USB Peripheral Controller" #define DRIVER_VERSION "2005 Sept 27/v3.0" @@ -203,13 +203,13 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) } /* erratum 0119 workaround ties up an endpoint number */ - if ((desc->bEndpointAddress & 0x0f) == EP_DONTUSE) { + if (usb_endpoint_num(desc) == EP_DONTUSE) { ret = -EDOM; goto print_err; } if (dev->quirks & PLX_PCIE) { - if ((desc->bEndpointAddress & 0x0f) >= 0x0c) { + if (usb_endpoint_num(desc) >= 0x0c) { ret = -EDOM; goto print_err; } @@ -255,7 +255,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) else tmp &= ~USB3380_EP_CFG_MASK_OUT; } - type = (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); + type = usb_endpoint_type(desc); if (type == USB_ENDPOINT_XFER_INT) { /* erratum 0105 workaround prevents hs NYET */ if (dev->chiprev == 0100 && @@ -1334,7 +1334,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged) retval = -ESHUTDOWN; goto print_err; } - if (ep->desc /* not ep0 */ && (ep->desc->bmAttributes & 0x03) + if (ep->desc /* not ep0 */ && usb_endpoint_type(ep->desc) == USB_ENDPOINT_XFER_ISOC) { retval = -EINVAL; goto print_err; diff --git a/drivers/usb/gadget/udc/omap_udc.c b/drivers/usb/gadget/udc/omap_udc.c index 10c5d7f726a1..062bf2b57d2e 100644 --- a/drivers/usb/gadget/udc/omap_udc.c +++ b/drivers/usb/gadget/udc/omap_udc.c @@ -18,6 +18,7 @@ #include <linux/errno.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> @@ -36,7 +37,7 @@ #include <asm/byteorder.h> #include <asm/irq.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <asm/mach-types.h> #include <linux/omap-dma.h> @@ -56,7 +57,6 @@ /* ISO too */ #define USE_ISO -#define DRIVER_DESC "OMAP UDC driver" #define DRIVER_VERSION "4 October 2004" #define OMAP_DMA_USB_W2FC_TX0 29 @@ -110,7 +110,6 @@ MODULE_PARM_DESC(use_dma, "enable/disable DMA"); static const char driver_name[] = "omap_udc"; -static const char driver_desc[] = DRIVER_DESC; /*-------------------------------------------------------------------------*/ @@ -253,7 +252,7 @@ static int omap_ep_disable(struct usb_ep *_ep) ep->has_dma = 0; omap_writew(UDC_SET_HALT, UDC_CTRL); list_del_init(&ep->iso); - del_timer(&ep->timer); + timer_delete(&ep->timer); spin_unlock_irqrestore(&ep->udc->lock, flags); @@ -578,13 +577,13 @@ static void finish_in_dma(struct omap_ep *ep, struct omap_req *req, int status) static void next_out_dma(struct omap_ep *ep, struct omap_req *req) { - unsigned packets = req->req.length - req->req.actual; + unsigned int packets = req->req.length - req->req.actual; int dma_trigger = 0; u16 w; /* set up this DMA transfer, enable the fifo, start */ packets /= ep->ep.maxpacket; - packets = min(packets, (unsigned)UDC_RXN_TC + 1); + packets = min_t(unsigned int, packets, UDC_RXN_TC + 1); req->dma_bytes = packets * ep->ep.maxpacket; omap_set_dma_transfer_params(ep->lch, OMAP_DMA_DATA_TYPE_S16, ep->ep.maxpacket >> 1, packets, @@ -1254,7 +1253,7 @@ static int omap_vbus_session(struct usb_gadget *gadget, int is_active) udc = container_of(gadget, struct omap_udc, gadget); spin_lock_irqsave(&udc->lock, flags); - VDBG("VBUS %s\n", is_active ? "on" : "off"); + VDBG("VBUS %s\n", str_on_off(is_active)); udc->vbus_active = (is_active != 0); if (cpu_is_omap15xx()) { /* "software" detect, ignored if !VBUS_MODE_1510 */ @@ -1861,7 +1860,7 @@ static irqreturn_t omap_udc_irq(int irq, void *_udc) static void pio_out_timer(struct timer_list *t) { - struct omap_ep *ep = from_timer(ep, t, timer); + struct omap_ep *ep = timer_container_of(ep, t, timer); unsigned long flags; u16 stat_flg; @@ -2036,7 +2035,8 @@ static irqreturn_t omap_udc_iso_irq(int irq, void *_dev) static inline int machine_without_vbus_sense(void) { - return machine_is_omap_osk() || machine_is_sx1(); + return machine_is_omap_osk() || machine_is_omap_palmte() || + machine_is_sx1(); } static int omap_udc_start(struct usb_gadget *g, @@ -2298,13 +2298,11 @@ static int proc_udc_show(struct seq_file *s, void *_) spin_lock_irqsave(&udc->lock, flags); - seq_printf(s, "%s, version: " DRIVER_VERSION + seq_printf(s, "OMAP UDC driver, version: " DRIVER_VERSION #ifdef USE_ISO " (iso)" #endif - "%s\n", - driver_desc, - use_dma ? " (dma)" : ""); + "%s\n", use_dma ? " (dma)" : ""); tmp = omap_readw(UDC_REV) & 0xff; seq_printf(s, @@ -2983,7 +2981,7 @@ static int omap_udc_resume(struct platform_device *dev) static struct platform_driver udc_driver = { .probe = omap_udc_probe, - .remove_new = omap_udc_remove, + .remove = omap_udc_remove, .suspend = omap_udc_suspend, .resume = omap_udc_resume, .driver = { @@ -2993,6 +2991,6 @@ static struct platform_driver udc_driver = { module_platform_driver(udc_driver); -MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_DESCRIPTION("OMAP UDC driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:omap_udc"); diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index 4f8617210d85..0b20ecbe64f9 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -274,7 +274,6 @@ struct pch_udc_cfg_data { * @td_data: for data request * @dev: reference to device struct * @offset_addr: offset address of ep register - * @desc: for this ep * @queue: queue for requests * @num: endpoint number * @in: endpoint is IN @@ -989,7 +988,7 @@ static void pch_udc_ep_enable(struct pch_udc_ep *ep, pch_udc_ep_fifo_flush(ep, ep->in); /* Configure the endpoint */ val = ep->num << UDC_CSR_NE_NUM_SHIFT | ep->in << UDC_CSR_NE_DIR_SHIFT | - ((desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) << + (usb_endpoint_type(desc) << UDC_CSR_NE_TYPE_SHIFT) | (cfg->cur_cfg << UDC_CSR_NE_CFG_SHIFT) | (cfg->cur_intf << UDC_CSR_NE_INTF_SHIFT) | diff --git a/drivers/usb/gadget/udc/pxa25x_udc.c b/drivers/usb/gadget/udc/pxa25x_udc.c index df0551ecc810..b97fb7b0cb2c 100644 --- a/drivers/usb/gadget/udc/pxa25x_udc.c +++ b/drivers/usb/gadget/udc/pxa25x_udc.c @@ -38,7 +38,7 @@ #include <asm/byteorder.h> #include <asm/dma.h> #include <asm/mach-types.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -1503,7 +1503,7 @@ reset_gadget(struct pxa25x_udc *dev, struct usb_gadget_driver *driver) ep->stopped = 1; nuke(ep, -ESHUTDOWN); } - del_timer_sync(&dev->timer); + timer_delete_sync(&dev->timer); /* report reset; the driver is already quiesced */ if (driver) @@ -1530,7 +1530,7 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver) ep->stopped = 1; nuke(ep, -ESHUTDOWN); } - del_timer_sync(&dev->timer); + timer_delete_sync(&dev->timer); /* report disconnect; the driver is already quiesced */ if (driver) @@ -1574,7 +1574,7 @@ static inline void clear_ep_state (struct pxa25x_udc *dev) static void udc_watchdog(struct timer_list *t) { - struct pxa25x_udc *dev = from_timer(dev, t, timer); + struct pxa25x_udc *dev = timer_container_of(dev, t, timer); local_irq_disable(); if (dev->ep0state == EP0_STALL @@ -1607,14 +1607,14 @@ static void handle_ep0 (struct pxa25x_udc *dev) if (udccs0 & UDCCS0_SST) { nuke(ep, -EPIPE); udc_ep0_set_UDCCS(dev, UDCCS0_SST); - del_timer(&dev->timer); + timer_delete(&dev->timer); ep0_idle(dev); } /* previous request unfinished? non-error iff back-to-back ... */ if ((udccs0 & UDCCS0_SA) != 0 && dev->ep0state != EP0_IDLE) { nuke(ep, 0); - del_timer(&dev->timer); + timer_delete(&dev->timer); ep0_idle(dev); } @@ -2348,15 +2348,14 @@ static int pxa25x_udc_probe(struct platform_device *pdev) dev->transceiver = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); if (gpio_is_valid(dev->mach->gpio_pullup)) { - retval = devm_gpio_request(&pdev->dev, dev->mach->gpio_pullup, - "pca25x_udc GPIO PULLUP"); + retval = devm_gpio_request_one(&pdev->dev, dev->mach->gpio_pullup, + GPIOF_OUT_INIT_LOW, "pca25x_udc GPIO PULLUP"); if (retval) { dev_dbg(&pdev->dev, "can't get pullup gpio %d, err: %d\n", dev->mach->gpio_pullup, retval); goto err; } - gpio_direction_output(dev->mach->gpio_pullup, 0); } timer_setup(&dev->timer, udc_watchdog, 0); @@ -2397,12 +2396,15 @@ static void pxa25x_udc_shutdown(struct platform_device *_dev) pullup_off(); } -static int pxa25x_udc_remove(struct platform_device *pdev) +static void pxa25x_udc_remove(struct platform_device *pdev) { struct pxa25x_udc *dev = platform_get_drvdata(pdev); - if (dev->driver) - return -EBUSY; + if (dev->driver) { + dev_err(&pdev->dev, + "Driver still in use but removing anyhow\n"); + return; + } usb_del_gadget_udc(&dev->gadget); dev->pullup = 0; @@ -2414,7 +2416,6 @@ static int pxa25x_udc_remove(struct platform_device *pdev) dev->transceiver = NULL; the_controller = NULL; - return 0; } /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index c4e1d957f913..897f53601b5b 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -20,11 +20,11 @@ #include <linux/gpio.h> #include <linux/gpio/consumer.h> #include <linux/slab.h> +#include <linux/string_choices.h> #include <linux/prefetch.h> #include <linux/byteorder/generic.h> #include <linux/platform_data/pxa2xx_udc.h> -#include <linux/of_device.h> -#include <linux/of_gpio.h> +#include <linux/of.h> #include <linux/usb.h> #include <linux/usb/ch9.h> @@ -1084,7 +1084,7 @@ static int pxa_ep_queue(struct usb_ep *_ep, struct usb_request *_req, is_first_req = list_empty(&ep->queue); ep_dbg(ep, "queue req %p(first=%s), len %d buf %p\n", - _req, is_first_req ? "yes" : "no", + _req, str_yes_no(is_first_req), _req->length, _req->buf); if (!ep->enabled) { @@ -2356,18 +2356,19 @@ static int pxa_udc_probe(struct platform_device *pdev) struct pxa_udc *udc = &memory; int retval = 0, gpio; struct pxa2xx_udc_mach_info *mach = dev_get_platdata(&pdev->dev); - unsigned long gpio_flags; if (mach) { - gpio_flags = mach->gpio_pullup_inverted ? GPIOF_ACTIVE_LOW : 0; gpio = mach->gpio_pullup; if (gpio_is_valid(gpio)) { retval = devm_gpio_request_one(&pdev->dev, gpio, - gpio_flags, + GPIOF_OUT_INIT_LOW, "USB D+ pullup"); if (retval) return retval; udc->gpiod = gpio_to_desc(mach->gpio_pullup); + + if (mach->gpio_pullup_inverted ^ gpiod_is_active_low(udc->gpiod)) + gpiod_toggle_active_low(udc->gpiod); } udc->udc_command = mach->udc_command; } else { @@ -2539,7 +2540,7 @@ static struct platform_driver udc_driver = { .of_match_table = of_match_ptr(udc_pxa_dt_ids), }, .probe = pxa_udc_probe, - .remove_new = pxa_udc_remove, + .remove = pxa_udc_remove, .shutdown = pxa_udc_shutdown, #ifdef CONFIG_PM .suspend = pxa_udc_suspend, diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c index 51b665f15c8e..e5c2630e3711 100644 --- a/drivers/usb/gadget/udc/r8a66597-udc.c +++ b/drivers/usb/gadget/udc/r8a66597-udc.c @@ -1516,7 +1516,7 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597) static void r8a66597_timer(struct timer_list *t) { - struct r8a66597 *r8a66597 = from_timer(r8a66597, t, timer); + struct r8a66597 *r8a66597 = timer_container_of(r8a66597, t, timer); unsigned long flags; u16 tmp; @@ -1810,7 +1810,7 @@ static void r8a66597_remove(struct platform_device *pdev) struct r8a66597 *r8a66597 = platform_get_drvdata(pdev); usb_del_gadget_udc(&r8a66597->gadget); - del_timer_sync(&r8a66597->timer); + timer_delete_sync(&r8a66597->timer); r8a66597_free_request(&r8a66597->ep[0].ep, r8a66597->ep0_req); if (r8a66597->pdata->on_chip) { @@ -1964,13 +1964,14 @@ clean_up2: /*-------------------------------------------------------------------------*/ static struct platform_driver r8a66597_driver = { - .remove_new = r8a66597_remove, + .probe = r8a66597_probe, + .remove = r8a66597_remove, .driver = { .name = udc_name, }, }; -module_platform_driver_probe(r8a66597_driver, r8a66597_probe); +module_platform_driver(r8a66597_driver); MODULE_DESCRIPTION("R8A66597 USB gadget driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 59bb25de2015..7cdcc9d16b8b 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -14,7 +14,7 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> @@ -310,7 +310,7 @@ struct renesas_usb3_request { struct list_head queue; }; -#define USB3_EP_NAME_SIZE 8 +#define USB3_EP_NAME_SIZE 16 struct renesas_usb3_ep { struct usb_ep ep; struct renesas_usb3 *usb3; @@ -2397,8 +2397,7 @@ static int renesas_usb3_stop(struct usb_gadget *gadget) rzv2m_usb3drd_reset(usb3_to_dev(usb3)->parent, false); renesas_usb3_stop_controller(usb3); - if (usb3->phy) - phy_exit(usb3->phy); + phy_exit(usb3->phy); pm_runtime_put(usb3_to_dev(usb3)); @@ -2658,6 +2657,7 @@ static void renesas_usb3_remove(struct platform_device *pdev) struct renesas_usb3 *usb3 = platform_get_drvdata(pdev); debugfs_remove_recursive(usb3->dentry); + put_device(usb3->host_dev); device_remove_file(&pdev->dev, &dev_attr_role); cancel_work_sync(&usb3->role_work); @@ -2974,7 +2974,6 @@ err_alloc_prd: return ret; } -#ifdef CONFIG_PM_SLEEP static int renesas_usb3_suspend(struct device *dev) { struct renesas_usb3 *usb3 = dev_get_drvdata(dev); @@ -2984,8 +2983,7 @@ static int renesas_usb3_suspend(struct device *dev) return 0; renesas_usb3_stop_controller(usb3); - if (usb3->phy) - phy_exit(usb3->phy); + phy_exit(usb3->phy); pm_runtime_put(dev); return 0; @@ -3006,17 +3004,16 @@ static int renesas_usb3_resume(struct device *dev) return 0; } -#endif -static SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend, - renesas_usb3_resume); +static DEFINE_SIMPLE_DEV_PM_OPS(renesas_usb3_pm_ops, renesas_usb3_suspend, + renesas_usb3_resume); static struct platform_driver renesas_usb3_driver = { .probe = renesas_usb3_probe, - .remove_new = renesas_usb3_remove, + .remove = renesas_usb3_remove, .driver = { .name = udc_name, - .pm = &renesas_usb3_pm_ops, + .pm = pm_sleep_ptr(&renesas_usb3_pm_ops), .of_match_table = usb3_of_match, }, }; @@ -3025,4 +3022,3 @@ module_platform_driver(renesas_usb3_driver); MODULE_DESCRIPTION("Renesas USB3.0 Peripheral driver"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>"); -MODULE_ALIAS("platform:renesas_usb3"); diff --git a/drivers/usb/gadget/udc/renesas_usbf.c b/drivers/usb/gadget/udc/renesas_usbf.c index 6cd0af83e91e..4c201574a0af 100644 --- a/drivers/usb/gadget/udc/renesas_usbf.c +++ b/drivers/usb/gadget/udc/renesas_usbf.c @@ -12,10 +12,9 @@ #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/kfifo.h> +#include <linux/mod_devicetable.h> #include <linux/module.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <linux/of_platform.h> +#include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/types.h> #include <linux/usb/composite.h> @@ -2483,7 +2482,7 @@ static int usbf_handle_ep0_setup(struct usbf_ep *ep0) ep0->delayed_status = 0; if ((crq.ctrlreq.bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD) { - /* This is not a USB standard request -> delelate */ + /* This is not a USB standard request -> delegate */ goto delegate; } @@ -3263,7 +3262,9 @@ static int usbf_probe(struct platform_device *pdev) if (IS_ERR(udc->regs)) return PTR_ERR(udc->regs); - devm_pm_runtime_enable(&pdev->dev); + ret = devm_pm_runtime_enable(&pdev->dev); + if (ret) + return ret; ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) return ret; @@ -3379,11 +3380,10 @@ MODULE_DEVICE_TABLE(of, usbf_match); static struct platform_driver udc_driver = { .driver = { .name = "usbf_renesas", - .owner = THIS_MODULE, .of_match_table = usbf_match, }, .probe = usbf_probe, - .remove_new = usbf_remove, + .remove = usbf_remove, }; module_platform_driver(udc_driver); diff --git a/drivers/usb/gadget/udc/rzv2m_usb3drd.c b/drivers/usb/gadget/udc/rzv2m_usb3drd.c index 36f4ff00d22f..4692eae89f44 100644 --- a/drivers/usb/gadget/udc/rzv2m_usb3drd.c +++ b/drivers/usb/gadget/udc/rzv2m_usb3drd.c @@ -127,7 +127,7 @@ static struct platform_driver rzv2m_usb3drd_driver = { .of_match_table = rzv2m_usb3drd_of_match, }, .probe = rzv2m_usb3drd_probe, - .remove_new = rzv2m_usb3drd_remove, + .remove = rzv2m_usb3drd_remove, }; module_platform_driver(rzv2m_usb3drd_driver); diff --git a/drivers/usb/gadget/udc/snps_udc_core.c b/drivers/usb/gadget/udc/snps_udc_core.c index 2fc5d4d277bc..373942ceb076 100644 --- a/drivers/usb/gadget/udc/snps_udc_core.c +++ b/drivers/usb/gadget/udc/snps_udc_core.c @@ -33,7 +33,7 @@ #include <linux/prefetch.h> #include <linux/moduleparam.h> #include <asm/byteorder.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include "amd5536udc.h" static void udc_setup_endpoints(struct udc *dev); @@ -2707,7 +2707,7 @@ static irqreturn_t udc_control_in_isr(struct udc *dev) /* write fifo */ udc_txfifo_write(ep, &req->req); - /* lengh bytes transferred */ + /* length bytes transferred */ len = req->req.length - req->req.actual; if (len > ep->ep.maxpacket) len = ep->ep.maxpacket; @@ -3035,12 +3035,12 @@ void udc_remove(struct udc *dev) stop_timer++; if (timer_pending(&udc_timer)) wait_for_completion(&on_exit); - del_timer_sync(&udc_timer); + timer_delete_sync(&udc_timer); /* remove pollstall timer */ stop_pollstall_timer++; if (timer_pending(&udc_pollstall_timer)) wait_for_completion(&on_pollstall_exit); - del_timer_sync(&udc_pollstall_timer); + timer_delete_sync(&udc_pollstall_timer); udc = NULL; } EXPORT_SYMBOL_GPL(udc_remove); diff --git a/drivers/usb/gadget/udc/snps_udc_plat.c b/drivers/usb/gadget/udc/snps_udc_plat.c index 0ed685db149d..db842a6de643 100644 --- a/drivers/usb/gadget/udc/snps_udc_plat.c +++ b/drivers/usb/gadget/udc/snps_udc_plat.c @@ -8,7 +8,6 @@ #include <linux/extcon.h> #include <linux/of_address.h> #include <linux/of_irq.h> -#include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/phy/phy.h> #include <linux/module.h> @@ -112,8 +111,7 @@ static int udc_plat_probe(struct platform_device *pdev) spin_lock_init(&udc->lock); udc->dev = dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - udc->virt_addr = devm_ioremap_resource(dev, res); + udc->virt_addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(udc->virt_addr)) return PTR_ERR(udc->virt_addr); @@ -301,7 +299,6 @@ static const struct dev_pm_ops udc_plat_pm_ops = { }; #endif -#if defined(CONFIG_OF) static const struct of_device_id of_udc_match[] = { { .compatible = "brcm,ns2-udc", }, { .compatible = "brcm,cygnus-udc", }, @@ -309,14 +306,13 @@ static const struct of_device_id of_udc_match[] = { { } }; MODULE_DEVICE_TABLE(of, of_udc_match); -#endif static struct platform_driver udc_plat_driver = { .probe = udc_plat_probe, - .remove_new = udc_plat_remove, + .remove = udc_plat_remove, .driver = { .name = "snps-udc-plat", - .of_match_table = of_match_ptr(of_udc_match), + .of_match_table = of_udc_match, #ifdef CONFIG_PM_SLEEP .pm = &udc_plat_pm_ops, #endif diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index df6028f7b273..9d2007f448c0 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -16,7 +16,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> -#include <linux/of_device.h> #include <linux/phy/phy.h> #include <linux/phy/tegra/xusb.h> #include <linux/pm_domain.h> @@ -503,6 +502,7 @@ struct tegra_xudc { struct clk_bulk_data *clks; bool device_mode; + bool current_device_mode; struct work_struct usb_role_sw_work; struct phy **usb3_phy; @@ -716,6 +716,8 @@ static void tegra_xudc_device_mode_on(struct tegra_xudc *xudc) phy_set_mode_ext(xudc->curr_utmi_phy, PHY_MODE_USB_OTG, USB_ROLE_DEVICE); + + xudc->current_device_mode = true; } static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc) @@ -726,6 +728,8 @@ static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc) dev_dbg(xudc->dev, "device mode off\n"); + xudc->current_device_mode = false; + connected = !!(xudc_readl(xudc, PORTSC) & PORTSC_CCS); reinit_completion(&xudc->disconnect_complete); @@ -808,8 +812,7 @@ static void tegra_xudc_update_data_role(struct tegra_xudc *xudc, return; } - xudc->device_mode = (usbphy->last_event == USB_EVENT_VBUS) ? true : - false; + xudc->device_mode = usbphy->last_event == USB_EVENT_VBUS; phy_index = tegra_xudc_get_phy_index(xudc, usbphy); dev_dbg(xudc->dev, "%s(): current phy index is %d\n", __func__, @@ -1555,12 +1558,6 @@ static int __tegra_xudc_ep_set_halt(struct tegra_xudc_ep *ep, bool halt) return -ENOTSUPP; } - if (!!(xudc_readl(xudc, EP_HALT) & BIT(ep->index)) == halt) { - dev_dbg(xudc->dev, "EP %u already %s\n", ep->index, - halt ? "halted" : "not halted"); - return 0; - } - if (halt) { ep_halt(xudc, ep->index); } else { @@ -1750,6 +1747,10 @@ static int __tegra_xudc_ep_disable(struct tegra_xudc_ep *ep) val = xudc_readl(xudc, CTRL); val &= ~CTRL_RUN; xudc_writel(xudc, val, CTRL); + + val = xudc_readl(xudc, ST); + if (val & ST_RC) + xudc_writel(xudc, ST_RC, ST); } dev_info(xudc->dev, "ep %u disabled\n", ep->index); @@ -3492,8 +3493,8 @@ static void tegra_xudc_device_params_init(struct tegra_xudc *xudc) static int tegra_xudc_phy_get(struct tegra_xudc *xudc) { - int err = 0, usb3; - unsigned int i; + int err = 0, usb3_companion_port; + unsigned int i, j; xudc->utmi_phy = devm_kcalloc(xudc->dev, xudc->soc->num_phys, sizeof(*xudc->utmi_phy), GFP_KERNEL); @@ -3521,7 +3522,7 @@ static int tegra_xudc_phy_get(struct tegra_xudc *xudc) if (IS_ERR(xudc->utmi_phy[i])) { err = PTR_ERR(xudc->utmi_phy[i]); dev_err_probe(xudc->dev, err, - "failed to get usb2-%d PHY\n", i); + "failed to get PHY for phy-name usb2-%d\n", i); goto clean_up; } else if (xudc->utmi_phy[i]) { /* Get usb-phy, if utmi phy is available */ @@ -3540,19 +3541,30 @@ static int tegra_xudc_phy_get(struct tegra_xudc *xudc) } /* Get USB3 phy */ - usb3 = tegra_xusb_padctl_get_usb3_companion(xudc->padctl, i); - if (usb3 < 0) + usb3_companion_port = tegra_xusb_padctl_get_usb3_companion(xudc->padctl, i); + if (usb3_companion_port < 0) continue; - snprintf(phy_name, sizeof(phy_name), "usb3-%d", usb3); - xudc->usb3_phy[i] = devm_phy_optional_get(xudc->dev, phy_name); - if (IS_ERR(xudc->usb3_phy[i])) { - err = PTR_ERR(xudc->usb3_phy[i]); - dev_err_probe(xudc->dev, err, - "failed to get usb3-%d PHY\n", usb3); - goto clean_up; - } else if (xudc->usb3_phy[i]) - dev_dbg(xudc->dev, "usb3-%d PHY registered", usb3); + for (j = 0; j < xudc->soc->num_phys; j++) { + snprintf(phy_name, sizeof(phy_name), "usb3-%d", j); + xudc->usb3_phy[i] = devm_phy_optional_get(xudc->dev, phy_name); + if (IS_ERR(xudc->usb3_phy[i])) { + err = PTR_ERR(xudc->usb3_phy[i]); + dev_err_probe(xudc->dev, err, + "failed to get PHY for phy-name usb3-%d\n", j); + goto clean_up; + } else if (xudc->usb3_phy[i]) { + int usb2_port = + tegra_xusb_padctl_get_port_number(xudc->utmi_phy[i]); + int usb3_port = + tegra_xusb_padctl_get_port_number(xudc->usb3_phy[i]); + if (usb3_port == usb3_companion_port) { + dev_dbg(xudc->dev, "USB2 port %d is paired with USB3 port %d for device mode port %d\n", + usb2_port, usb3_port, i); + break; + } + } + } } return err; @@ -4030,10 +4042,10 @@ static int __maybe_unused tegra_xudc_resume(struct device *dev) spin_lock_irqsave(&xudc->lock, flags); xudc->suspended = false; + if (xudc->device_mode != xudc->current_device_mode) + schedule_work(&xudc->usb_role_sw_work); spin_unlock_irqrestore(&xudc->lock, flags); - schedule_work(&xudc->usb_role_sw_work); - pm_runtime_enable(dev); return 0; @@ -4061,7 +4073,7 @@ static const struct dev_pm_ops tegra_xudc_pm_ops = { static struct platform_driver tegra_xudc_driver = { .probe = tegra_xudc_probe, - .remove_new = tegra_xudc_remove, + .remove = tegra_xudc_remove, .driver = { .name = "tegra-xudc", .pm = &tegra_xudc_pm_ops, diff --git a/drivers/usb/gadget/udc/trace.h b/drivers/usb/gadget/udc/trace.h index a5ed26fbc2da..fa3e6ddf0a12 100644 --- a/drivers/usb/gadget/udc/trace.h +++ b/drivers/usb/gadget/udc/trace.h @@ -81,6 +81,11 @@ DECLARE_EVENT_CLASS(udc_log_gadget, __entry->ret) ); +DEFINE_EVENT(udc_log_gadget, usb_gadget_set_state, + TP_PROTO(struct usb_gadget *g, int ret), + TP_ARGS(g, ret) +); + DEFINE_EVENT(udc_log_gadget, usb_gadget_frame_number, TP_PROTO(struct usb_gadget *g, int ret), TP_ARGS(g, ret) @@ -157,7 +162,7 @@ DECLARE_EVENT_CLASS(udc_log_ep, __field(int, ret) ), TP_fast_assign( - __assign_str(name, ep->name); + __assign_str(name); __entry->maxpacket = ep->maxpacket; __entry->maxpacket_limit = ep->maxpacket_limit; __entry->max_streams = ep->max_streams; @@ -233,7 +238,7 @@ DECLARE_EVENT_CLASS(udc_log_req, __field(struct usb_request *, req) ), TP_fast_assign( - __assign_str(name, ep->name); + __assign_str(name); __entry->length = req->length; __entry->actual = req->actual; __entry->num_sgs = req->num_sgs; diff --git a/drivers/usb/gadget/udc/udc-xilinx.c b/drivers/usb/gadget/udc/udc-xilinx.c index a4a7b90a97e7..8d803a612bb1 100644 --- a/drivers/usb/gadget/udc/udc-xilinx.c +++ b/drivers/usb/gadget/udc/udc-xilinx.c @@ -18,10 +18,8 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> -#include <linux/of_address.h> -#include <linux/of_device.h> -#include <linux/of_platform.h> -#include <linux/of_irq.h> +#include <linux/of.h> +#include <linux/platform_device.h> #include <linux/prefetch.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -499,11 +497,13 @@ static int xudc_eptxrx(struct xusb_ep *ep, struct xusb_req *req, /* Get the Buffer address and copy the transmit data.*/ eprambase = (u32 __force *)(udc->addr + ep->rambase); if (ep->is_in) { - memcpy(eprambase, bufferptr, bytestosend); + memcpy_toio((void __iomem *)eprambase, bufferptr, + bytestosend); udc->write_fn(udc->addr, ep->offset + XUSB_EP_BUF0COUNT_OFFSET, bufferlen); } else { - memcpy(bufferptr, eprambase, bytestosend); + memcpy_toio((void __iomem *)bufferptr, eprambase, + bytestosend); } /* * Enable the buffer for transmission. @@ -517,11 +517,13 @@ static int xudc_eptxrx(struct xusb_ep *ep, struct xusb_req *req, eprambase = (u32 __force *)(udc->addr + ep->rambase + ep->ep_usb.maxpacket); if (ep->is_in) { - memcpy(eprambase, bufferptr, bytestosend); + memcpy_toio((void __iomem *)eprambase, bufferptr, + bytestosend); udc->write_fn(udc->addr, ep->offset + XUSB_EP_BUF1COUNT_OFFSET, bufferlen); } else { - memcpy(bufferptr, eprambase, bytestosend); + memcpy_toio((void __iomem *)bufferptr, eprambase, + bytestosend); } /* * Enable the buffer for transmission. @@ -811,10 +813,10 @@ static int __xudc_ep_enable(struct xusb_ep *ep, ep->is_in = ((desc->bEndpointAddress & USB_DIR_IN) != 0); /* Bit 3...0:endpoint number */ - ep->epnumber = (desc->bEndpointAddress & 0x0f); + ep->epnumber = usb_endpoint_num(desc); ep->desc = desc; ep->ep_usb.desc = desc; - tmp = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + tmp = usb_endpoint_type(desc); ep->ep_usb.maxpacket = maxpacket = le16_to_cpu(desc->wMaxPacketSize); switch (tmp) { @@ -945,7 +947,7 @@ static int xudc_ep_disable(struct usb_ep *_ep) ep->desc = NULL; ep->ep_usb.desc = NULL; - dev_dbg(udc->dev, "USB Ep %d disable\n ", ep->epnumber); + dev_dbg(udc->dev, "USB Ep %d disable\n", ep->epnumber); /* Disable the endpoint.*/ epcfg = udc->read_fn(udc->addr + ep->offset); epcfg &= ~XUSB_EP_CFG_VALID_MASK; @@ -1023,7 +1025,7 @@ static int __xudc_ep0_queue(struct xusb_ep *ep0, struct xusb_req *req) udc->addr); length = req->usb_req.actual = min_t(u32, length, EP0_MAX_PACKET); - memcpy(corebuf, req->usb_req.buf, length); + memcpy_toio((void __iomem *)corebuf, req->usb_req.buf, length); udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, length); udc->write_fn(udc->addr, XUSB_BUFFREADY_OFFSET, 1); } else { @@ -1617,13 +1619,13 @@ static void xudc_getstatus(struct xusb_udc *udc) case USB_RECIP_INTERFACE: break; case USB_RECIP_ENDPOINT: - epnum = udc->setup.wIndex & USB_ENDPOINT_NUMBER_MASK; + epnum = le16_to_cpu(udc->setup.wIndex) & USB_ENDPOINT_NUMBER_MASK; if (epnum >= XUSB_MAX_ENDPOINTS) goto stall; target_ep = &udc->ep[epnum]; epcfgreg = udc->read_fn(udc->addr + target_ep->offset); halt = epcfgreg & XUSB_EP_CFG_STALL_MASK; - if (udc->setup.wIndex & USB_DIR_IN) { + if (le16_to_cpu(udc->setup.wIndex) & USB_DIR_IN) { if (!target_ep->is_in) goto stall; } else { @@ -1638,7 +1640,7 @@ static void xudc_getstatus(struct xusb_udc *udc) } req->usb_req.length = 2; - *(u16 *)req->usb_req.buf = cpu_to_le16(status); + *(__le16 *)req->usb_req.buf = cpu_to_le16(status); ret = __xudc_ep0_queue(ep0, req); if (ret == 0) return; @@ -1666,7 +1668,7 @@ static void xudc_set_clear_feature(struct xusb_udc *udc) switch (udc->setup.bRequestType) { case USB_RECIP_DEVICE: - switch (udc->setup.wValue) { + switch (le16_to_cpu(udc->setup.wValue)) { case USB_DEVICE_TEST_MODE: /* * The Test Mode will be executed @@ -1686,13 +1688,15 @@ static void xudc_set_clear_feature(struct xusb_udc *udc) break; case USB_RECIP_ENDPOINT: if (!udc->setup.wValue) { - endpoint = udc->setup.wIndex & USB_ENDPOINT_NUMBER_MASK; + endpoint = le16_to_cpu(udc->setup.wIndex) & + USB_ENDPOINT_NUMBER_MASK; if (endpoint >= XUSB_MAX_ENDPOINTS) { xudc_ep0_stall(udc); return; } target_ep = &udc->ep[endpoint]; - outinbit = udc->setup.wIndex & USB_ENDPOINT_DIR_MASK; + outinbit = le16_to_cpu(udc->setup.wIndex) & + USB_ENDPOINT_DIR_MASK; outinbit = outinbit >> 7; /* Make sure direction matches.*/ @@ -1752,12 +1756,12 @@ static void xudc_handle_setup(struct xusb_udc *udc) /* Load up the chapter 9 command buffer.*/ ep0rambase = (u32 __force *) (udc->addr + XUSB_SETUP_PKT_ADDR_OFFSET); - memcpy(&setup, ep0rambase, 8); + memcpy_toio((void __iomem *)&setup, ep0rambase, 8); udc->setup = setup; - udc->setup.wValue = cpu_to_le16(setup.wValue); - udc->setup.wIndex = cpu_to_le16(setup.wIndex); - udc->setup.wLength = cpu_to_le16(setup.wLength); + udc->setup.wValue = cpu_to_le16((u16 __force)setup.wValue); + udc->setup.wIndex = cpu_to_le16((u16 __force)setup.wIndex); + udc->setup.wLength = cpu_to_le16((u16 __force)setup.wLength); /* Clear previous requests */ xudc_nuke(ep0, -ECONNRESET); @@ -1839,7 +1843,7 @@ static void xudc_ep0_out(struct xusb_udc *udc) (ep0->rambase << 2)); buffer = req->usb_req.buf + req->usb_req.actual; req->usb_req.actual = req->usb_req.actual + bytes_to_rx; - memcpy(buffer, ep0rambase, bytes_to_rx); + memcpy_toio((void __iomem *)buffer, ep0rambase, bytes_to_rx); if (req->usb_req.length == req->usb_req.actual) { /* Data transfer completed get ready for Status stage */ @@ -1869,7 +1873,7 @@ static void xudc_ep0_in(struct xusb_udc *udc) u16 count = 0; u16 length; u8 *ep0rambase; - u8 test_mode = udc->setup.wIndex >> 8; + u8 test_mode = le16_to_cpu(udc->setup.wIndex) >> 8; req = list_first_entry(&ep0->queue, struct xusb_req, queue); bytes_to_tx = req->usb_req.length - req->usb_req.actual; @@ -1880,12 +1884,12 @@ static void xudc_ep0_in(struct xusb_udc *udc) case USB_REQ_SET_ADDRESS: /* Set the address of the device.*/ udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, - udc->setup.wValue); + le16_to_cpu(udc->setup.wValue)); break; case USB_REQ_SET_FEATURE: if (udc->setup.bRequestType == USB_RECIP_DEVICE) { - if (udc->setup.wValue == + if (le16_to_cpu(udc->setup.wValue) == USB_DEVICE_TEST_MODE) udc->write_fn(udc->addr, XUSB_TESTMODE_OFFSET, @@ -1915,7 +1919,7 @@ static void xudc_ep0_in(struct xusb_udc *udc) (ep0->rambase << 2)); buffer = req->usb_req.buf + req->usb_req.actual; req->usb_req.actual = req->usb_req.actual + length; - memcpy(ep0rambase, buffer, length); + memcpy_toio((void __iomem *)ep0rambase, buffer, length); } udc->write_fn(udc->addr, XUSB_EP_BUF0COUNT_OFFSET, count); udc->write_fn(udc->addr, XUSB_BUFFREADY_OFFSET, 1); @@ -2080,8 +2084,7 @@ static int xudc_probe(struct platform_device *pdev) udc->req->usb_req.buf = buff; /* Map the registers */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - udc->addr = devm_ioremap_resource(&pdev->dev, res); + udc->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(udc->addr)) return PTR_ERR(udc->addr); @@ -2175,8 +2178,6 @@ fail: /** * xudc_remove - Releases the resources allocated during the initialization. * @pdev: pointer to the platform device structure. - * - * Return: 0 always */ static void xudc_remove(struct platform_device *pdev) { @@ -2255,7 +2256,7 @@ static struct platform_driver xudc_driver = { .pm = &xudc_pm_ops, }, .probe = xudc_probe, - .remove_new = xudc_remove, + .remove = xudc_remove, }; module_platform_driver(xudc_driver); diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c index 75f6f99f8173..37a2f1b61cba 100644 --- a/drivers/usb/gadget/usbstring.c +++ b/drivers/usb/gadget/usbstring.c @@ -55,7 +55,7 @@ usb_gadget_get_string (const struct usb_gadget_strings *table, int id, u8 *buf) return -EINVAL; /* string descriptors have length, tag, then UTF16-LE text */ - len = min((size_t)USB_MAX_STRING_LEN, strlen(s->s)); + len = min_t(size_t, USB_MAX_STRING_LEN, strlen(s->s)); len = utf8s_to_utf16s(s->s, len, UTF16_LITTLE_ENDIAN, (wchar_t *) &buf[2], USB_MAX_STRING_LEN); if (len < 0) |