diff options
Diffstat (limited to 'drivers/staging/keucr/usb.c')
| -rw-r--r-- | drivers/staging/keucr/usb.c | 642 |
1 files changed, 0 insertions, 642 deletions
diff --git a/drivers/staging/keucr/usb.c b/drivers/staging/keucr/usb.c deleted file mode 100644 index 12ebde7315cd..000000000000 --- a/drivers/staging/keucr/usb.c +++ /dev/null @@ -1,642 +0,0 @@ -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/freezer.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/kthread.h> -#include <linux/mutex.h> -#include <linux/utsname.h> - -#include <scsi/scsi.h> -#include <scsi/scsi_cmnd.h> -#include <scsi/scsi_device.h> - -#include "usb.h" -#include "scsiglue.h" -#include "smil.h" -#include "transport.h" - -/* Some informational data */ -MODULE_AUTHOR("Domao"); -MODULE_DESCRIPTION("ENE USB Mass Storage driver for Linux"); -MODULE_LICENSE("GPL"); - -static unsigned int delay_use = 1; - -static struct usb_device_id eucr_usb_ids[] = { - { USB_DEVICE(0x058f, 0x6366) }, - { USB_DEVICE(0x0cf2, 0x6230) }, - { USB_DEVICE(0x0cf2, 0x6250) }, - { } /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, eucr_usb_ids); - - -#ifdef CONFIG_PM - -static int eucr_suspend(struct usb_interface *iface, pm_message_t message) -{ - struct us_data *us = usb_get_intfdata(iface); - pr_info("--- eucr_suspend ---\n"); - /* Wait until no command is running */ - mutex_lock(&us->dev_mutex); - - if (us->suspend_resume_hook) - (us->suspend_resume_hook)(us, US_SUSPEND); - - mutex_unlock(&us->dev_mutex); - return 0; -} - -static int eucr_resume(struct usb_interface *iface) -{ - u8 tmp = 0; - - struct us_data *us = usb_get_intfdata(iface); - pr_info("--- eucr_resume---\n"); - mutex_lock(&us->dev_mutex); - - if (us->suspend_resume_hook) - (us->suspend_resume_hook)(us, US_RESUME); - - - mutex_unlock(&us->dev_mutex); - - us->Power_IsResum = true; - - us->SM_Status = *(struct keucr_sm_status *)&tmp; - - return 0; -} - -static int eucr_reset_resume(struct usb_interface *iface) -{ - u8 tmp = 0; - struct us_data *us = usb_get_intfdata(iface); - - pr_info("--- eucr_reset_resume---\n"); - - /* Report the reset to the SCSI core */ - usb_stor_report_bus_reset(us); - - /* - * FIXME: Notify the subdrivers that they need to reinitialize - * the device - */ - - us->Power_IsResum = true; - - us->SM_Status = *(struct keucr_sm_status *)&tmp; - - return 0; -} - -#else - -#define eucr_suspend NULL -#define eucr_resume NULL -#define eucr_reset_resume NULL - -#endif - -static int eucr_pre_reset(struct usb_interface *iface) -{ - struct us_data *us = usb_get_intfdata(iface); - - pr_info("usb --- eucr_pre_reset\n"); - - /* Make sure no command runs during the reset */ - mutex_lock(&us->dev_mutex); - return 0; -} - -static int eucr_post_reset(struct usb_interface *iface) -{ - struct us_data *us = usb_get_intfdata(iface); - - pr_info("usb --- eucr_post_reset\n"); - - /* Report the reset to the SCSI core */ - usb_stor_report_bus_reset(us); - - mutex_unlock(&us->dev_mutex); - return 0; -} - -void fill_inquiry_response(struct us_data *us, unsigned char *data, - unsigned int data_len) -{ - pr_info("usb --- fill_inquiry_response\n"); - if (data_len < 36) /* You lose. */ - return; - - if (data[0]&0x20) { - memset(data+8, 0, 28); - } else { - u16 bcdDevice = - le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); - memcpy(data+8, us->unusual_dev->vendorName, - strlen(us->unusual_dev->vendorName) > 8 ? 8 : - strlen(us->unusual_dev->vendorName)); - memcpy(data+16, us->unusual_dev->productName, - strlen(us->unusual_dev->productName) > 16 ? 16 : - strlen(us->unusual_dev->productName)); - data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); - data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); - data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); - data[35] = 0x30 + ((bcdDevice) & 0x0F); - } - usb_stor_set_xfer_buf(us, data, data_len, us->srb, TO_XFER_BUF); -} - -static int usb_stor_control_thread(void *__us) -{ - struct us_data *us = (struct us_data *)__us; - struct Scsi_Host *host = us_to_host(us); - - pr_info("usb --- usb_stor_control_thread\n"); - for (;;) { - if (wait_for_completion_interruptible(&us->cmnd_ready)) - break; - - /* lock the device pointers */ - mutex_lock(&(us->dev_mutex)); - - /* if the device has disconnected, we are free to exit */ - if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { - mutex_unlock(&us->dev_mutex); - break; - } - - /* lock access to the state */ - scsi_lock(host); - - /* When we are called with no command pending, we're done */ - if (us->srb == NULL) { - scsi_unlock(host); - mutex_unlock(&us->dev_mutex); - break; - } - - /* has the command timed out *already* ? */ - if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { - us->srb->result = DID_ABORT << 16; - goto SkipForAbort; - } - - scsi_unlock(host); - - if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) { - us->srb->result = DID_ERROR << 16; - } else if (us->srb->device->id - && !(us->fflags & US_FL_SCM_MULT_TARG)) { - us->srb->result = DID_BAD_TARGET << 16; - } else if (us->srb->device->lun > us->max_lun) { - us->srb->result = DID_BAD_TARGET << 16; - } else if ((us->srb->cmnd[0] == INQUIRY) - && (us->fflags & US_FL_FIX_INQUIRY)) { - unsigned char data_ptr[36] = {0x00, 0x80, 0x02, 0x02, - 0x1F, 0x00, 0x00, 0x00}; - - fill_inquiry_response(us, data_ptr, 36); - us->srb->result = SAM_STAT_GOOD; - } else { - us->proto_handler(us->srb, us); - } - - /* lock access to the state */ - scsi_lock(host); - - /* indicate that the command is done */ - if (us->srb->result != DID_ABORT << 16) { - us->srb->scsi_done(us->srb); - } else { -SkipForAbort: - pr_info("scsi command aborted\n"); - } - - if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { - complete(&(us->notify)); - - /* Allow USB transfers to resume */ - clear_bit(US_FLIDX_ABORTING, &us->dflags); - clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); - } - - /* finished working on this command */ - us->srb = NULL; - scsi_unlock(host); - - /* unlock the device pointers */ - mutex_unlock(&us->dev_mutex); - } /* for (;;) */ - - /* Wait until we are told to stop */ - for (;;) { - set_current_state(TASK_INTERRUPTIBLE); - if (kthread_should_stop()) - break; - schedule(); - } - __set_current_state(TASK_RUNNING); - return 0; -} - -static int associate_dev(struct us_data *us, struct usb_interface *intf) -{ - pr_info("usb --- associate_dev\n"); - - /* Fill in the device-related fields */ - us->pusb_dev = interface_to_usbdev(intf); - us->pusb_intf = intf; - us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; - - /* Store our private data in the interface */ - usb_set_intfdata(intf, us); - - /* Allocate the device-related DMA-mapped buffers */ - us->cr = usb_alloc_coherent(us->pusb_dev, sizeof(*us->cr), GFP_KERNEL, - &us->cr_dma); - if (!us->cr) { - pr_info("usb_ctrlrequest allocation failed\n"); - return -ENOMEM; - } - - us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, GFP_KERNEL, - &us->iobuf_dma); - if (!us->iobuf) { - pr_info("I/O buffer allocation failed\n"); - return -ENOMEM; - } - - us->sensebuf = kmalloc(US_SENSE_SIZE, GFP_KERNEL); - if (!us->sensebuf) - return -ENOMEM; - - return 0; -} - -static int get_device_info(struct us_data *us, const struct usb_device_id *id) -{ - struct usb_device *dev = us->pusb_dev; - struct usb_interface_descriptor *idesc = - &us->pusb_intf->cur_altsetting->desc; - - pr_info("usb --- get_device_info\n"); - - us->subclass = idesc->bInterfaceSubClass; - us->protocol = idesc->bInterfaceProtocol; - us->fflags = id->driver_info; - us->Power_IsResum = false; - - if (us->fflags & US_FL_IGNORE_DEVICE) { - pr_info("device ignored\n"); - return -ENODEV; - } - - if (dev->speed != USB_SPEED_HIGH) - us->fflags &= ~US_FL_GO_SLOW; - - return 0; -} - -static int get_transport(struct us_data *us) -{ - pr_info("usb --- get_transport\n"); - switch (us->protocol) { - case USB_PR_BULK: - us->transport_name = "Bulk"; - us->transport = usb_stor_Bulk_transport; - us->transport_reset = usb_stor_Bulk_reset; - break; - - default: - return -EIO; - } - - /* fix for single-lun devices */ - if (us->fflags & US_FL_SINGLE_LUN) - us->max_lun = 0; - return 0; -} - -static int get_protocol(struct us_data *us) -{ - pr_info("usb --- get_protocol\n"); - pr_info("us->pusb_dev->descriptor.idVendor = %x\n", - us->pusb_dev->descriptor.idVendor); - pr_info("us->pusb_dev->descriptor.idProduct = %x\n", - us->pusb_dev->descriptor.idProduct); - switch (us->subclass) { - case USB_SC_SCSI: - us->protocol_name = "Transparent SCSI"; - if ((us->pusb_dev->descriptor.idVendor == 0x0CF2) - && (us->pusb_dev->descriptor.idProduct == 0x6250)) - us->proto_handler = ENE_stor_invoke_transport; - else - us->proto_handler = usb_stor_invoke_transport; - break; - - default: - return -EIO; - } - return 0; -} - -static int get_pipes(struct us_data *us) -{ - struct usb_host_interface *altsetting = us->pusb_intf->cur_altsetting; - int i; - struct usb_endpoint_descriptor *ep; - struct usb_endpoint_descriptor *ep_in = NULL; - struct usb_endpoint_descriptor *ep_out = NULL; - struct usb_endpoint_descriptor *ep_int = NULL; - - pr_info("usb --- get_pipes\n"); - - for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { - ep = &altsetting->endpoint[i].desc; - - if (usb_endpoint_xfer_bulk(ep)) { - if (usb_endpoint_dir_in(ep)) { - if (!ep_in) - ep_in = ep; - } else { - if (!ep_out) - ep_out = ep; - } - } else if (usb_endpoint_is_int_in(ep)) { - if (!ep_int) - ep_int = ep; - } - } - - if (!ep_in || !ep_out || (us->protocol == USB_PR_CBI && !ep_int)) { - pr_info("Endpoint sanity check failed! Rejecting dev.\n"); - return -EIO; - } - - /* Calculate and store the pipe values */ - us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); - us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); - us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, - ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); - us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, - ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); - if (ep_int) { - us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, - ep_int->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); - us->ep_bInterval = ep_int->bInterval; - } - return 0; -} - -static int usb_stor_acquire_resources(struct us_data *us) -{ - struct task_struct *th; - - pr_info("usb --- usb_stor_acquire_resources\n"); - us->current_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!us->current_urb) { - pr_info("URB allocation failed\n"); - return -ENOMEM; - } - - /* Start up our control thread */ - th = kthread_run(usb_stor_control_thread, us, "eucr-storage"); - if (IS_ERR(th)) { - pr_info("Unable to start control thread\n"); - return PTR_ERR(th); - } - us->ctl_thread = th; - - return 0; -} - -static void usb_stor_release_resources(struct us_data *us) -{ - pr_info("usb --- usb_stor_release_resources\n"); - - SM_FreeMem(); - - complete(&us->cmnd_ready); - if (us->ctl_thread) - kthread_stop(us->ctl_thread); - - /* Call the destructor routine, if it exists */ - if (us->extra_destructor) { - pr_info("-- calling extra_destructor()\n"); - us->extra_destructor(us->extra); - } - - /* Free the extra data and the URB */ - kfree(us->extra); - usb_free_urb(us->current_urb); -} - -static void dissociate_dev(struct us_data *us) -{ - pr_info("usb --- dissociate_dev\n"); - - kfree(us->sensebuf); - - /* Free the device-related DMA-mapped buffers */ - usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr, us->cr_dma); - usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, - us->iobuf_dma); - - /* Remove our private data from the interface */ - usb_set_intfdata(us->pusb_intf, NULL); -} - -static void quiesce_and_remove_host(struct us_data *us) -{ - struct Scsi_Host *host = us_to_host(us); - - pr_info("usb --- quiesce_and_remove_host\n"); - - /* If the device is really gone, cut short reset delays */ - if (us->pusb_dev->state == USB_STATE_NOTATTACHED) - set_bit(US_FLIDX_DISCONNECTING, &us->dflags); - - /* - * Prevent SCSI-scanning (if it hasn't started yet) - * and wait for the SCSI-scanning thread to stop. - */ - set_bit(US_FLIDX_DONT_SCAN, &us->dflags); - wake_up(&us->delay_wait); - wait_for_completion(&us->scanning_done); - - /* - * Removing the host will perform an orderly shutdown: caches - * synchronized, disks spun down, etc. - */ - scsi_remove_host(host); - - /* - * Prevent any new commands from being accepted and cut short - * reset delays. - */ - scsi_lock(host); - set_bit(US_FLIDX_DISCONNECTING, &us->dflags); - scsi_unlock(host); - wake_up(&us->delay_wait); -} - -static void release_everything(struct us_data *us) -{ - pr_info("usb --- release_everything\n"); - - usb_stor_release_resources(us); - dissociate_dev(us); - scsi_host_put(us_to_host(us)); -} - -static int usb_stor_scan_thread(void *__us) -{ - struct us_data *us = (struct us_data *)__us; - - pr_info("usb --- usb_stor_scan_thread\n"); - pr_info("EUCR : device found at %d\n", us->pusb_dev->devnum); - - set_freezable(); - /* Wait for the timeout to expire or for a disconnect */ - if (delay_use > 0) { - wait_event_freezable_timeout(us->delay_wait, - test_bit(US_FLIDX_DONT_SCAN, &us->dflags), - delay_use * HZ); - } - - /* If the device is still connected, perform the scanning */ - if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) { - /* For bulk-only devices, determine the max LUN value */ - if (us->protocol == USB_PR_BULK - && !(us->fflags & US_FL_SINGLE_LUN)) { - mutex_lock(&us->dev_mutex); - us->max_lun = usb_stor_Bulk_max_lun(us); - mutex_unlock(&us->dev_mutex); - } - scsi_scan_host(us_to_host(us)); - pr_info("EUCR : device scan complete\n"); - } - complete_and_exit(&us->scanning_done, 0); -} - -static int eucr_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct Scsi_Host *host; - struct us_data *us; - int result; - u8 MiscReg03 = 0; - struct task_struct *th; - - pr_info("usb --- eucr_probe\n"); - - host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us)); - if (!host) { - pr_info("Unable to allocate the scsi host\n"); - return -ENOMEM; - } - - /* Allow 16-byte CDBs and thus > 2TB */ - host->max_cmd_len = 16; - us = host_to_us(host); - memset(us, 0, sizeof(struct us_data)); - mutex_init(&(us->dev_mutex)); - init_completion(&us->cmnd_ready); - init_completion(&(us->notify)); - init_waitqueue_head(&us->delay_wait); - init_completion(&us->scanning_done); - - /* Associate the us_data structure with the USB device */ - result = associate_dev(us, intf); - if (result) - goto BadDevice; - - /* Get Device info */ - result = get_device_info(us, id); - if (result) - goto BadDevice; - - /* Get the transport, protocol, and pipe settings */ - result = get_transport(us); - if (result) - goto BadDevice; - result = get_protocol(us); - if (result) - goto BadDevice; - result = get_pipes(us); - if (result) - goto BadDevice; - - /* Acquire all the other resources and add the host */ - result = usb_stor_acquire_resources(us); - if (result) - goto BadDevice; - - result = scsi_add_host(host, &intf->dev); - if (result) { - pr_info("Unable to add the scsi host\n"); - goto BadDevice; - } - - /* Start up the thread for delayed SCSI-device scanning */ - th = kthread_create(usb_stor_scan_thread, us, "eucr-stor-scan"); - if (IS_ERR(th)) { - pr_info("Unable to start the device-scanning thread\n"); - complete(&us->scanning_done); - quiesce_and_remove_host(us); - result = PTR_ERR(th); - goto BadDevice; - } - wake_up_process(th); - - /* probe card type */ - result = ene_read_byte(us, REG_CARD_STATUS, &MiscReg03); - if (result != USB_STOR_XFER_GOOD) { - result = USB_STOR_TRANSPORT_ERROR; - quiesce_and_remove_host(us); - goto BadDevice; - } - - if (!(MiscReg03 & 0x02)) { - result = -ENODEV; - quiesce_and_remove_host(us); - pr_info("keucr: The driver only supports SM/MS card. To use SD card, please build driver/usb/storage/ums-eneub6250.ko\n"); - goto BadDevice; - } - - return 0; - - /* We come here if there are any problems */ -BadDevice: - pr_info("usb --- eucr_probe failed\n"); - release_everything(us); - return result; -} - -static void eucr_disconnect(struct usb_interface *intf) -{ - struct us_data *us = usb_get_intfdata(intf); - - pr_info("usb --- eucr_disconnect\n"); - quiesce_and_remove_host(us); - release_everything(us); -} - -/* Initialization and registration */ -static struct usb_driver usb_storage_driver = { - .name = "eucr", - .probe = eucr_probe, - .suspend = eucr_suspend, - .resume = eucr_resume, - .reset_resume = eucr_reset_resume, - .disconnect = eucr_disconnect, - .pre_reset = eucr_pre_reset, - .post_reset = eucr_post_reset, - .id_table = eucr_usb_ids, - .soft_unbind = 1, -}; - -module_usb_driver(usb_storage_driver); |