diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/usb.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/usb.c | 1040 |
1 files changed, 0 insertions, 1040 deletions
diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c deleted file mode 100644 index f90fe21e5bfd..000000000000 --- a/drivers/net/wireless/mwifiex/usb.c +++ /dev/null @@ -1,1040 +0,0 @@ -/* - * Marvell Wireless LAN device driver: USB specific handling - * - * Copyright (C) 2012, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include "main.h" -#include "usb.h" - -#define USB_VERSION "1.0" - -static const char usbdriver_name[] = "usb8797"; - -static u8 user_rmmod; -static struct mwifiex_if_ops usb_ops; -static struct semaphore add_remove_card_sem; - -static struct usb_device_id mwifiex_usb_table[] = { - {USB_DEVICE(USB8797_VID, USB8797_PID_1)}, - {USB_DEVICE_AND_INTERFACE_INFO(USB8797_VID, USB8797_PID_2, - USB_CLASS_VENDOR_SPEC, - USB_SUBCLASS_VENDOR_SPEC, 0xff)}, - { } /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); - -static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); - -/* This function handles received packet. Necessary action is taken based on - * cmd/event/data. - */ -static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, - struct sk_buff *skb, u8 ep) -{ - struct device *dev = adapter->dev; - u32 recv_type; - __le32 tmp; - int ret; - - if (adapter->hs_activated) - mwifiex_process_hs_config(adapter); - - if (skb->len < INTF_HEADER_LEN) { - dev_err(dev, "%s: invalid skb->len\n", __func__); - return -1; - } - - switch (ep) { - case MWIFIEX_USB_EP_CMD_EVENT: - dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__); - skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); - recv_type = le32_to_cpu(tmp); - skb_pull(skb, INTF_HEADER_LEN); - - switch (recv_type) { - case MWIFIEX_USB_TYPE_CMD: - if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { - dev_err(dev, "CMD: skb->len too large\n"); - ret = -1; - goto exit_restore_skb; - } else if (!adapter->curr_cmd) { - dev_dbg(dev, "CMD: no curr_cmd\n"); - if (adapter->ps_state == PS_STATE_SLEEP_CFM) { - mwifiex_process_sleep_confirm_resp( - adapter, skb->data, - skb->len); - ret = 0; - goto exit_restore_skb; - } - ret = -1; - goto exit_restore_skb; - } - - adapter->curr_cmd->resp_skb = skb; - adapter->cmd_resp_received = true; - break; - case MWIFIEX_USB_TYPE_EVENT: - if (skb->len < sizeof(u32)) { - dev_err(dev, "EVENT: skb->len too small\n"); - ret = -1; - goto exit_restore_skb; - } - skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); - adapter->event_cause = le32_to_cpu(tmp); - dev_dbg(dev, "event_cause %#x\n", adapter->event_cause); - - if (skb->len > MAX_EVENT_SIZE) { - dev_err(dev, "EVENT: event body too large\n"); - ret = -1; - goto exit_restore_skb; - } - - memcpy(adapter->event_body, skb->data + - MWIFIEX_EVENT_HEADER_LEN, skb->len); - - adapter->event_received = true; - adapter->event_skb = skb; - break; - default: - dev_err(dev, "unknown recv_type %#x\n", recv_type); - return -1; - } - break; - case MWIFIEX_USB_EP_DATA: - dev_dbg(dev, "%s: EP_DATA\n", __func__); - if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { - dev_err(dev, "DATA: skb->len too large\n"); - return -1; - } - skb_queue_tail(&adapter->usb_rx_data_q, skb); - adapter->data_received = true; - break; - default: - dev_err(dev, "%s: unknown endport %#x\n", __func__, ep); - return -1; - } - - return -EINPROGRESS; - -exit_restore_skb: - /* The buffer will be reused for further cmds/events */ - skb_push(skb, INTF_HEADER_LEN); - - return ret; -} - -static void mwifiex_usb_rx_complete(struct urb *urb) -{ - struct urb_context *context = (struct urb_context *)urb->context; - struct mwifiex_adapter *adapter = context->adapter; - struct sk_buff *skb = context->skb; - struct usb_card_rec *card; - int recv_length = urb->actual_length; - int size, status; - - if (!adapter || !adapter->card) { - pr_err("mwifiex adapter or card structure is not valid\n"); - return; - } - - card = (struct usb_card_rec *)adapter->card; - if (card->rx_cmd_ep == context->ep) - atomic_dec(&card->rx_cmd_urb_pending); - else - atomic_dec(&card->rx_data_urb_pending); - - if (recv_length) { - if (urb->status || (adapter->surprise_removed)) { - dev_err(adapter->dev, - "URB status is failed: %d\n", urb->status); - /* Do not free skb in case of command ep */ - if (card->rx_cmd_ep != context->ep) - dev_kfree_skb_any(skb); - goto setup_for_next; - } - if (skb->len > recv_length) - skb_trim(skb, recv_length); - else - skb_put(skb, recv_length - skb->len); - - atomic_inc(&adapter->rx_pending); - status = mwifiex_usb_recv(adapter, skb, context->ep); - - dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n", - recv_length, status); - if (status == -EINPROGRESS) { - queue_work(adapter->workqueue, &adapter->main_work); - - /* urb for data_ep is re-submitted now; - * urb for cmd_ep will be re-submitted in callback - * mwifiex_usb_recv_complete - */ - if (card->rx_cmd_ep == context->ep) - return; - } else { - atomic_dec(&adapter->rx_pending); - if (status == -1) - dev_err(adapter->dev, - "received data processing failed!\n"); - - /* Do not free skb in case of command ep */ - if (card->rx_cmd_ep != context->ep) - dev_kfree_skb_any(skb); - } - } else if (urb->status) { - if (!adapter->is_suspended) { - dev_warn(adapter->dev, - "Card is removed: %d\n", urb->status); - adapter->surprise_removed = true; - } - dev_kfree_skb_any(skb); - return; - } else { - /* Do not free skb in case of command ep */ - if (card->rx_cmd_ep != context->ep) - dev_kfree_skb_any(skb); - - /* fall through setup_for_next */ - } - -setup_for_next: - if (card->rx_cmd_ep == context->ep) - size = MWIFIEX_RX_CMD_BUF_SIZE; - else - size = MWIFIEX_RX_DATA_BUF_SIZE; - - mwifiex_usb_submit_rx_urb(context, size); - - return; -} - -static void mwifiex_usb_tx_complete(struct urb *urb) -{ - struct urb_context *context = (struct urb_context *)(urb->context); - struct mwifiex_adapter *adapter = context->adapter; - struct usb_card_rec *card = adapter->card; - - dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status); - - if (context->ep == card->tx_cmd_ep) { - dev_dbg(adapter->dev, "%s: CMD\n", __func__); - atomic_dec(&card->tx_cmd_urb_pending); - adapter->cmd_sent = false; - } else { - dev_dbg(adapter->dev, "%s: DATA\n", __func__); - atomic_dec(&card->tx_data_urb_pending); - mwifiex_write_data_complete(adapter, context->skb, 0, - urb->status ? -1 : 0); - } - - queue_work(adapter->workqueue, &adapter->main_work); - - return; -} - -static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) -{ - struct mwifiex_adapter *adapter = ctx->adapter; - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - - if (card->rx_cmd_ep != ctx->ep) { - ctx->skb = dev_alloc_skb(size); - if (!ctx->skb) { - dev_err(adapter->dev, - "%s: dev_alloc_skb failed\n", __func__); - return -ENOMEM; - } - } - - usb_fill_bulk_urb(ctx->urb, card->udev, - usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data, - size, mwifiex_usb_rx_complete, (void *)ctx); - - if (card->rx_cmd_ep == ctx->ep) - atomic_inc(&card->rx_cmd_urb_pending); - else - atomic_inc(&card->rx_data_urb_pending); - - if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { - dev_err(adapter->dev, "usb_submit_urb failed\n"); - dev_kfree_skb_any(ctx->skb); - ctx->skb = NULL; - - if (card->rx_cmd_ep == ctx->ep) - atomic_dec(&card->rx_cmd_urb_pending); - else - atomic_dec(&card->rx_data_urb_pending); - - return -1; - } - - return 0; -} - -static void mwifiex_usb_free(struct usb_card_rec *card) -{ - int i; - - if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) - usb_kill_urb(card->rx_cmd.urb); - - usb_free_urb(card->rx_cmd.urb); - card->rx_cmd.urb = NULL; - - if (atomic_read(&card->rx_data_urb_pending)) - for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) - if (card->rx_data_list[i].urb) - usb_kill_urb(card->rx_data_list[i].urb); - - for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { - usb_free_urb(card->rx_data_list[i].urb); - card->rx_data_list[i].urb = NULL; - } - - for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { - usb_free_urb(card->tx_data_list[i].urb); - card->tx_data_list[i].urb = NULL; - } - - usb_free_urb(card->tx_cmd.urb); - card->tx_cmd.urb = NULL; - - return; -} - -/* This function probes an mwifiex device and registers it. It allocates - * the card structure, initiates the device registration and initialization - * procedure by adding a logical interface. - */ -static int mwifiex_usb_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *udev = interface_to_usbdev(intf); - struct usb_host_interface *iface_desc = intf->cur_altsetting; - struct usb_endpoint_descriptor *epd; - int ret, i; - struct usb_card_rec *card; - u16 id_vendor, id_product, bcd_device, bcd_usb; - - card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); - if (!card) - return -ENOMEM; - - id_vendor = le16_to_cpu(udev->descriptor.idVendor); - id_product = le16_to_cpu(udev->descriptor.idProduct); - bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); - bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB); - pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", - id_vendor, id_product, bcd_device); - - /* PID_1 is used for firmware downloading only */ - if (id_product == USB8797_PID_1) - card->usb_boot_state = USB8797_FW_DNLD; - else - card->usb_boot_state = USB8797_FW_READY; - - card->udev = udev; - card->intf = intf; - - pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", - udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, - udev->descriptor.bDeviceSubClass, - udev->descriptor.bDeviceProtocol); - - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - epd = &iface_desc->endpoint[i].desc; - if (usb_endpoint_dir_in(epd) && - usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && - usb_endpoint_xfer_bulk(epd)) { - pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", - le16_to_cpu(epd->wMaxPacketSize), - epd->bEndpointAddress); - card->rx_cmd_ep = usb_endpoint_num(epd); - atomic_set(&card->rx_cmd_urb_pending, 0); - } - if (usb_endpoint_dir_in(epd) && - usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && - usb_endpoint_xfer_bulk(epd)) { - pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", - le16_to_cpu(epd->wMaxPacketSize), - epd->bEndpointAddress); - card->rx_data_ep = usb_endpoint_num(epd); - atomic_set(&card->rx_data_urb_pending, 0); - } - if (usb_endpoint_dir_out(epd) && - usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && - usb_endpoint_xfer_bulk(epd)) { - pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", - le16_to_cpu(epd->wMaxPacketSize), - epd->bEndpointAddress); - card->tx_data_ep = usb_endpoint_num(epd); - atomic_set(&card->tx_data_urb_pending, 0); - } - if (usb_endpoint_dir_out(epd) && - usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && - usb_endpoint_xfer_bulk(epd)) { - pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", - le16_to_cpu(epd->wMaxPacketSize), - epd->bEndpointAddress); - card->tx_cmd_ep = usb_endpoint_num(epd); - atomic_set(&card->tx_cmd_urb_pending, 0); - card->bulk_out_maxpktsize = - le16_to_cpu(epd->wMaxPacketSize); - } - } - - usb_set_intfdata(intf, card); - - ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, - MWIFIEX_USB); - if (ret) { - pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); - usb_reset_device(udev); - kfree(card); - return ret; - } - - usb_get_dev(udev); - - return 0; -} - -/* Kernel needs to suspend all functions separately. Therefore all - * registered functions must have drivers with suspend and resume - * methods. Failing that the kernel simply removes the whole card. - * - * If already not suspended, this function allocates and sends a - * 'host sleep activate' request to the firmware and turns off the traffic. - */ -static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct usb_card_rec *card = usb_get_intfdata(intf); - struct mwifiex_adapter *adapter; - int i; - - if (!card || !card->adapter) { - pr_err("%s: card or card->adapter is NULL\n", __func__); - return 0; - } - adapter = card->adapter; - - if (unlikely(adapter->is_suspended)) - dev_warn(adapter->dev, "Device already suspended\n"); - - mwifiex_enable_hs(adapter); - - /* 'is_suspended' flag indicates device is suspended. - * It must be set here before the usb_kill_urb() calls. Reason - * is in the complete handlers, urb->status(= -ENOENT) and - * this flag is used in combination to distinguish between a - * 'suspended' state and a 'disconnect' one. - */ - adapter->is_suspended = true; - - for (i = 0; i < adapter->priv_num; i++) - netif_carrier_off(adapter->priv[i]->netdev); - - if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) - usb_kill_urb(card->rx_cmd.urb); - - if (atomic_read(&card->rx_data_urb_pending)) - for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) - if (card->rx_data_list[i].urb) - usb_kill_urb(card->rx_data_list[i].urb); - - for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) - if (card->tx_data_list[i].urb) - usb_kill_urb(card->tx_data_list[i].urb); - - if (card->tx_cmd.urb) - usb_kill_urb(card->tx_cmd.urb); - - return 0; -} - -/* Kernel needs to suspend all functions separately. Therefore all - * registered functions must have drivers with suspend and resume - * methods. Failing that the kernel simply removes the whole card. - * - * If already not resumed, this function turns on the traffic and - * sends a 'host sleep cancel' request to the firmware. - */ -static int mwifiex_usb_resume(struct usb_interface *intf) -{ - struct usb_card_rec *card = usb_get_intfdata(intf); - struct mwifiex_adapter *adapter; - int i; - - if (!card || !card->adapter) { - pr_err("%s: card or card->adapter is NULL\n", __func__); - return 0; - } - adapter = card->adapter; - - if (unlikely(!adapter->is_suspended)) { - dev_warn(adapter->dev, "Device already resumed\n"); - return 0; - } - - /* Indicate device resumed. The netdev queue will be resumed only - * after the urbs have been re-submitted - */ - adapter->is_suspended = false; - - if (!atomic_read(&card->rx_data_urb_pending)) - for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) - mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], - MWIFIEX_RX_DATA_BUF_SIZE); - - if (!atomic_read(&card->rx_cmd_urb_pending)) { - card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); - if (card->rx_cmd.skb) - mwifiex_usb_submit_rx_urb(&card->rx_cmd, - MWIFIEX_RX_CMD_BUF_SIZE); - } - - for (i = 0; i < adapter->priv_num; i++) - if (adapter->priv[i]->media_connected) - netif_carrier_on(adapter->priv[i]->netdev); - - /* Disable Host Sleep */ - if (adapter->hs_activated) - mwifiex_cancel_hs(mwifiex_get_priv(adapter, - MWIFIEX_BSS_ROLE_ANY), - MWIFIEX_ASYNC_CMD); - -#ifdef CONFIG_PM - /* Resume handler may be called due to remote wakeup, - * force to exit suspend anyway - */ - usb_disable_autosuspend(card->udev); -#endif /* CONFIG_PM */ - - return 0; -} - -static void mwifiex_usb_disconnect(struct usb_interface *intf) -{ - struct usb_card_rec *card = usb_get_intfdata(intf); - struct mwifiex_adapter *adapter; - int i; - - if (!card || !card->adapter) { - pr_err("%s: card or card->adapter is NULL\n", __func__); - return; - } - - adapter = card->adapter; - if (!adapter->priv_num) - return; - - /* In case driver is removed when asynchronous FW downloading is - * in progress - */ - wait_for_completion(&adapter->fw_load); - - if (user_rmmod) { -#ifdef CONFIG_PM - if (adapter->is_suspended) - mwifiex_usb_resume(intf); -#endif - for (i = 0; i < adapter->priv_num; i++) - if ((GET_BSS_ROLE(adapter->priv[i]) == - MWIFIEX_BSS_ROLE_STA) && - adapter->priv[i]->media_connected) - mwifiex_deauthenticate(adapter->priv[i], NULL); - - mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, - MWIFIEX_BSS_ROLE_ANY), - MWIFIEX_FUNC_SHUTDOWN); - } - - mwifiex_usb_free(card); - - dev_dbg(adapter->dev, "%s: removing card\n", __func__); - mwifiex_remove_card(adapter, &add_remove_card_sem); - - usb_set_intfdata(intf, NULL); - usb_put_dev(interface_to_usbdev(intf)); - kfree(card); - - return; -} - -static struct usb_driver mwifiex_usb_driver = { - .name = usbdriver_name, - .probe = mwifiex_usb_probe, - .disconnect = mwifiex_usb_disconnect, - .id_table = mwifiex_usb_table, - .suspend = mwifiex_usb_suspend, - .resume = mwifiex_usb_resume, - .supports_autosuspend = 1, -}; - -static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) -{ - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - int i; - - card->tx_cmd.adapter = adapter; - card->tx_cmd.ep = card->tx_cmd_ep; - - card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); - if (!card->tx_cmd.urb) { - dev_err(adapter->dev, "tx_cmd.urb allocation failed\n"); - return -ENOMEM; - } - - card->tx_data_ix = 0; - - for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { - card->tx_data_list[i].adapter = adapter; - card->tx_data_list[i].ep = card->tx_data_ep; - - card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); - if (!card->tx_data_list[i].urb) { - dev_err(adapter->dev, - "tx_data_list[] urb allocation failed\n"); - return -ENOMEM; - } - } - - return 0; -} - -static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) -{ - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - int i; - - card->rx_cmd.adapter = adapter; - card->rx_cmd.ep = card->rx_cmd_ep; - - card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); - if (!card->rx_cmd.urb) { - dev_err(adapter->dev, "rx_cmd.urb allocation failed\n"); - return -ENOMEM; - } - - card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); - if (!card->rx_cmd.skb) { - dev_err(adapter->dev, "rx_cmd.skb allocation failed\n"); - return -ENOMEM; - } - - if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) - return -1; - - for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { - card->rx_data_list[i].adapter = adapter; - card->rx_data_list[i].ep = card->rx_data_ep; - - card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); - if (!card->rx_data_list[i].urb) { - dev_err(adapter->dev, - "rx_data_list[] urb allocation failed\n"); - return -1; - } - if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], - MWIFIEX_RX_DATA_BUF_SIZE)) - return -1; - } - - return 0; -} - -static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, - u32 *len, u8 ep, u32 timeout) -{ - struct usb_card_rec *card = adapter->card; - int actual_length, ret; - - if (!(*len % card->bulk_out_maxpktsize)) - (*len)++; - - /* Send the data block */ - ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, - *len, &actual_length, timeout); - if (ret) { - dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret); - return ret; - } - - *len = actual_length; - - return ret; -} - -static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, - u32 *len, u8 ep, u32 timeout) -{ - struct usb_card_rec *card = adapter->card; - int actual_length, ret; - - /* Receive the data response */ - ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, - *len, &actual_length, timeout); - if (ret) { - dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret); - return ret; - } - - *len = actual_length; - - return ret; -} - -/* This function write a command/data packet to card. */ -static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, - struct sk_buff *skb, - struct mwifiex_tx_param *tx_param) -{ - struct usb_card_rec *card = adapter->card; - struct urb_context *context; - u8 *data = (u8 *)skb->data; - struct urb *tx_urb; - - if (adapter->is_suspended) { - dev_err(adapter->dev, - "%s: not allowed while suspended\n", __func__); - return -1; - } - - if (adapter->surprise_removed) { - dev_err(adapter->dev, "%s: device removed\n", __func__); - return -1; - } - - if (ep == card->tx_data_ep && - atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { - return -EBUSY; - } - - dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep); - - if (ep == card->tx_cmd_ep) { - context = &card->tx_cmd; - } else { - if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) - card->tx_data_ix = 0; - context = &card->tx_data_list[card->tx_data_ix++]; - } - - context->adapter = adapter; - context->ep = ep; - context->skb = skb; - tx_urb = context->urb; - - usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), - data, skb->len, mwifiex_usb_tx_complete, - (void *)context); - - tx_urb->transfer_flags |= URB_ZERO_PACKET; - - if (ep == card->tx_cmd_ep) - atomic_inc(&card->tx_cmd_urb_pending); - else - atomic_inc(&card->tx_data_urb_pending); - - if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { - dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__); - if (ep == card->tx_cmd_ep) { - atomic_dec(&card->tx_cmd_urb_pending); - } else { - atomic_dec(&card->tx_data_urb_pending); - if (card->tx_data_ix) - card->tx_data_ix--; - else - card->tx_data_ix = MWIFIEX_TX_DATA_URB; - } - - return -1; - } else { - if (ep == card->tx_data_ep && - atomic_read(&card->tx_data_urb_pending) == - MWIFIEX_TX_DATA_URB) - return -ENOSR; - } - - return -EINPROGRESS; -} - -/* This function register usb device and initialize parameter. */ -static int mwifiex_register_dev(struct mwifiex_adapter *adapter) -{ - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - - card->adapter = adapter; - adapter->dev = &card->udev->dev; - strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); - - return 0; -} - -static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, - struct mwifiex_fw_image *fw) -{ - int ret = 0; - u8 *firmware = fw->fw_buf, *recv_buff; - u32 retries = USB8797_FW_MAX_RETRY, dlen; - u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; - struct fw_data *fwdata; - struct fw_sync_header sync_fw; - u8 check_winner = 1; - - if (!firmware) { - dev_err(adapter->dev, - "No firmware image found! Terminating download\n"); - ret = -1; - goto fw_exit; - } - - /* Allocate memory for transmit */ - fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); - if (!fwdata) - goto fw_exit; - - /* Allocate memory for receive */ - recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); - if (!recv_buff) - goto cleanup; - - do { - /* Send pseudo data to check winner status first */ - if (check_winner) { - memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); - dlen = 0; - } else { - /* copy the header of the fw_data to get the length */ - memcpy(&fwdata->fw_hdr, &firmware[tlen], - sizeof(struct fw_header)); - - dlen = le32_to_cpu(fwdata->fw_hdr.data_len); - dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); - tlen += sizeof(struct fw_header); - - memcpy(fwdata->data, &firmware[tlen], dlen); - - fwdata->seq_num = cpu_to_le32(fw_seqnum); - tlen += dlen; - } - - /* If the send/receive fails or CRC occurs then retry */ - while (retries--) { - u8 *buf = (u8 *)fwdata; - u32 len = FW_DATA_XMIT_SIZE; - - /* send the firmware block */ - ret = mwifiex_write_data_sync(adapter, buf, &len, - MWIFIEX_USB_EP_CMD_EVENT, - MWIFIEX_USB_TIMEOUT); - if (ret) { - dev_err(adapter->dev, - "write_data_sync: failed: %d\n", ret); - continue; - } - - buf = recv_buff; - len = FW_DNLD_RX_BUF_SIZE; - - /* Receive the firmware block response */ - ret = mwifiex_read_data_sync(adapter, buf, &len, - MWIFIEX_USB_EP_CMD_EVENT, - MWIFIEX_USB_TIMEOUT); - if (ret) { - dev_err(adapter->dev, - "read_data_sync: failed: %d\n", ret); - continue; - } - - memcpy(&sync_fw, recv_buff, - sizeof(struct fw_sync_header)); - - /* check 1st firmware block resp for highest bit set */ - if (check_winner) { - if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { - dev_warn(adapter->dev, - "USB is not the winner %#x\n", - sync_fw.cmd); - - /* returning success */ - ret = 0; - goto cleanup; - } - - dev_dbg(adapter->dev, - "USB is the winner, start to download FW\n"); - - check_winner = 0; - break; - } - - /* check the firmware block response for CRC errors */ - if (sync_fw.cmd) { - dev_err(adapter->dev, - "FW received block with CRC %#x\n", - sync_fw.cmd); - ret = -1; - continue; - } - - retries = USB8797_FW_MAX_RETRY; - break; - } - fw_seqnum++; - } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); - -cleanup: - dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen); - - kfree(recv_buff); - kfree(fwdata); - - if (retries) - ret = 0; -fw_exit: - return ret; -} - -static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, - struct mwifiex_fw_image *fw) -{ - int ret; - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - - if (card->usb_boot_state == USB8797_FW_DNLD) { - ret = mwifiex_prog_fw_w_helper(adapter, fw); - if (ret) - return -1; - - /* Boot state changes after successful firmware download */ - if (card->usb_boot_state == USB8797_FW_DNLD) - return -1; - } - - ret = mwifiex_usb_rx_init(adapter); - if (!ret) - ret = mwifiex_usb_tx_init(adapter); - - return ret; -} - -static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) -{ - struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; - - skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); - if ((ep == card->rx_cmd_ep) && - (!atomic_read(&card->rx_cmd_urb_pending))) - mwifiex_usb_submit_rx_urb(&card->rx_cmd, - MWIFIEX_RX_CMD_BUF_SIZE); - - return; -} - -static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, - struct sk_buff *skb) -{ - atomic_dec(&adapter->rx_pending); - mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); - - return 0; -} - -static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter, - struct sk_buff *skb) -{ - atomic_dec(&adapter->rx_pending); - dev_kfree_skb_any(skb); - - return 0; -} - -/* This function wakes up the card. */ -static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) -{ - /* Simulation of HS_AWAKE event */ - adapter->pm_wakeup_fw_try = false; - adapter->pm_wakeup_card_req = false; - adapter->ps_state = PS_STATE_AWAKE; - - return 0; -} - -static struct mwifiex_if_ops usb_ops = { - .register_dev = mwifiex_register_dev, - .wakeup = mwifiex_pm_wakeup_card, - .wakeup_complete = mwifiex_pm_wakeup_card_complete, - - /* USB specific */ - .dnld_fw = mwifiex_usb_dnld_fw, - .cmdrsp_complete = mwifiex_usb_cmd_event_complete, - .event_complete = mwifiex_usb_cmd_event_complete, - .data_complete = mwifiex_usb_data_complete, - .host_to_card = mwifiex_usb_host_to_card, -}; - -/* This function initializes the USB driver module. - * - * This initiates the semaphore and registers the device with - * USB bus. - */ -static int mwifiex_usb_init_module(void) -{ - int ret; - - pr_debug("Marvell USB8797 Driver\n"); - - sema_init(&add_remove_card_sem, 1); - - ret = usb_register(&mwifiex_usb_driver); - if (ret) - pr_err("Driver register failed!\n"); - else - pr_debug("info: Driver registered successfully!\n"); - - return ret; -} - -/* This function cleans up the USB driver. - * - * The following major steps are followed in .disconnect for cleanup: - * - Resume the device if its suspended - * - Disconnect the device if connected - * - Shutdown the firmware - * - Unregister the device from USB bus. - */ -static void mwifiex_usb_cleanup_module(void) -{ - if (!down_interruptible(&add_remove_card_sem)) - up(&add_remove_card_sem); - - /* set the flag as user is removing this module */ - user_rmmod = 1; - - usb_deregister(&mwifiex_usb_driver); -} - -module_init(mwifiex_usb_init_module); -module_exit(mwifiex_usb_cleanup_module); - -MODULE_AUTHOR("Marvell International Ltd."); -MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); -MODULE_VERSION(USB_VERSION); -MODULE_LICENSE("GPL v2"); -MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin"); |