drivers/net/wireless/marvell/mwifiex/usb.c

   1 /*
   2  * Marvell Wireless LAN device driver: USB specific handling
   3  *
   4  * Copyright (C) 2012-2014, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "main.h"
  21 #include "usb.h"
  22
  23 #define USB_VERSION     "1.0"
  24
  25 static struct mwifiex_if_ops usb_ops;
  26
  27 static struct usb_device_id mwifiex_usb_table[] = {
  28         /* 8766 */
  29         {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)},
  30         {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2,
  31                                        USB_CLASS_VENDOR_SPEC,
  32                                        USB_SUBCLASS_VENDOR_SPEC, 0xff)},
  33         /* 8797 */
  34         {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)},
  35         {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2,
  36                                        USB_CLASS_VENDOR_SPEC,
  37                                        USB_SUBCLASS_VENDOR_SPEC, 0xff)},
  38         /* 8801 */
  39         {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)},
  40         {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2,
  41                                        USB_CLASS_VENDOR_SPEC,
  42                                        USB_SUBCLASS_VENDOR_SPEC, 0xff)},
  43         /* 8997 */
  44         {USB_DEVICE(USB8XXX_VID, USB8997_PID_1)},
  45         {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8997_PID_2,
  46                                        USB_CLASS_VENDOR_SPEC,
  47                                        USB_SUBCLASS_VENDOR_SPEC, 0xff)},
  48         { }     /* Terminating entry */
  49 };
  50
  51 MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
  52
  53 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
  54
  55 /* This function handles received packet. Necessary action is taken based on
  56  * cmd/event/data.
  57  */
  58 static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
  59                             struct sk_buff *skb, u8 ep)
  60 {
  61         u32 recv_type;
  62         __le32 tmp;
  63         int ret;
  64
  65         if (adapter->hs_activated)
  66                 mwifiex_process_hs_config(adapter);
  67
  68         if (skb->len < INTF_HEADER_LEN) {
  69                 mwifiex_dbg(adapter, ERROR,
  70                             "%s: invalid skb->len\n", __func__);
  71                 return -1;
  72         }
  73
  74         switch (ep) {
  75         case MWIFIEX_USB_EP_CMD_EVENT:
  76                 mwifiex_dbg(adapter, EVENT,
  77                             "%s: EP_CMD_EVENT\n", __func__);
  78                 skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
  79                 recv_type = le32_to_cpu(tmp);
  80                 skb_pull(skb, INTF_HEADER_LEN);
  81
  82                 switch (recv_type) {
  83                 case MWIFIEX_USB_TYPE_CMD:
  84                         if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
  85                                 mwifiex_dbg(adapter, ERROR,
  86                                             "CMD: skb->len too large\n");
  87                                 ret = -1;
  88                                 goto exit_restore_skb;
  89                         } else if (!adapter->curr_cmd) {
  90                                 mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n");
  91                                 if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
  92                                         mwifiex_process_sleep_confirm_resp(
  93                                                         adapter, skb->data,
  94                                                         skb->len);
  95                                         ret = 0;
  96                                         goto exit_restore_skb;
  97                                 }
  98                                 ret = -1;
  99                                 goto exit_restore_skb;
 100                         }
 101
 102                         adapter->curr_cmd->resp_skb = skb;
 103                         adapter->cmd_resp_received = true;
 104                         break;
 105                 case MWIFIEX_USB_TYPE_EVENT:
 106                         if (skb->len < sizeof(u32)) {
 107                                 mwifiex_dbg(adapter, ERROR,
 108                                             "EVENT: skb->len too small\n");
 109                                 ret = -1;
 110                                 goto exit_restore_skb;
 111                         }
 112                         skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
 113                         adapter->event_cause = le32_to_cpu(tmp);
 114                         mwifiex_dbg(adapter, EVENT,
 115                                     "event_cause %#x\n", adapter->event_cause);
 116
 117                         if (skb->len > MAX_EVENT_SIZE) {
 118                                 mwifiex_dbg(adapter, ERROR,
 119                                             "EVENT: event body too large\n");
 120                                 ret = -1;
 121                                 goto exit_restore_skb;
 122                         }
 123
 124                         memcpy(adapter->event_body, skb->data +
 125                                MWIFIEX_EVENT_HEADER_LEN, skb->len);
 126
 127                         adapter->event_received = true;
 128                         adapter->event_skb = skb;
 129                         break;
 130                 default:
 131                         mwifiex_dbg(adapter, ERROR,
 132                                     "unknown recv_type %#x\n", recv_type);
 133                         return -1;
 134                 }
 135                 break;
 136         case MWIFIEX_USB_EP_DATA:
 137                 mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__);
 138                 if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
 139                         mwifiex_dbg(adapter, ERROR,
 140                                     "DATA: skb->len too large\n");
 141                         return -1;
 142                 }
 143
 144                 skb_queue_tail(&adapter->rx_data_q, skb);
 145                 adapter->data_received = true;
 146                 atomic_inc(&adapter->rx_pending);
 147                 break;
 148         default:
 149                 mwifiex_dbg(adapter, ERROR,
 150                             "%s: unknown endport %#x\n", __func__, ep);
 151                 return -1;
 152         }
 153
 154         return -EINPROGRESS;
 155
 156 exit_restore_skb:
 157         /* The buffer will be reused for further cmds/events */
 158         skb_push(skb, INTF_HEADER_LEN);
 159
 160         return ret;
 161 }
 162
 163 static void mwifiex_usb_rx_complete(struct urb *urb)
 164 {
 165         struct urb_context *context = (struct urb_context *)urb->context;
 166         struct mwifiex_adapter *adapter = context->adapter;
 167         struct sk_buff *skb = context->skb;
 168         struct usb_card_rec *card;
 169         int recv_length = urb->actual_length;
 170         int size, status;
 171
 172         if (!adapter || !adapter->card) {
 173                 pr_err("mwifiex adapter or card structure is not valid\n");
 174                 return;
 175         }
 176
 177         card = (struct usb_card_rec *)adapter->card;
 178         if (card->rx_cmd_ep == context->ep)
 179                 atomic_dec(&card->rx_cmd_urb_pending);
 180         else
 181                 atomic_dec(&card->rx_data_urb_pending);
 182
 183         if (recv_length) {
 184                 if (urb->status || (adapter->surprise_removed)) {
 185                         mwifiex_dbg(adapter, ERROR,
 186                                     "URB status is failed: %d\n", urb->status);
 187                         /* Do not free skb in case of command ep */
 188                         if (card->rx_cmd_ep != context->ep)
 189                                 dev_kfree_skb_any(skb);
 190                         goto setup_for_next;
 191                 }
 192                 if (skb->len > recv_length)
 193                         skb_trim(skb, recv_length);
 194                 else
 195                         skb_put(skb, recv_length - skb->len);
 196
 197                 status = mwifiex_usb_recv(adapter, skb, context->ep);
 198
 199                 mwifiex_dbg(adapter, INFO,
 200                             "info: recv_length=%d, status=%d\n",
 201                             recv_length, status);
 202                 if (status == -EINPROGRESS) {
 203                         mwifiex_queue_main_work(adapter);
 204
 205                         /* urb for data_ep is re-submitted now;
 206                          * urb for cmd_ep will be re-submitted in callback
 207                          * mwifiex_usb_recv_complete
 208                          */
 209                         if (card->rx_cmd_ep == context->ep)
 210                                 return;
 211                 } else {
 212                         if (status == -1)
 213                                 mwifiex_dbg(adapter, ERROR,
 214                                             "received data processing failed!\n");
 215
 216                         /* Do not free skb in case of command ep */
 217                         if (card->rx_cmd_ep != context->ep)
 218                                 dev_kfree_skb_any(skb);
 219                 }
 220         } else if (urb->status) {
 221                 if (!adapter->is_suspended) {
 222                         mwifiex_dbg(adapter, FATAL,
 223                                     "Card is removed: %d\n", urb->status);
 224                         adapter->surprise_removed = true;
 225                 }
 226                 dev_kfree_skb_any(skb);
 227                 return;
 228         } else {
 229                 /* Do not free skb in case of command ep */
 230                 if (card->rx_cmd_ep != context->ep)
 231                         dev_kfree_skb_any(skb);
 232
 233                 /* fall through setup_for_next */
 234         }
 235
 236 setup_for_next:
 237         if (card->rx_cmd_ep == context->ep)
 238                 size = MWIFIEX_RX_CMD_BUF_SIZE;
 239         else
 240                 size = MWIFIEX_RX_DATA_BUF_SIZE;
 241
 242         if (card->rx_cmd_ep == context->ep) {
 243                 mwifiex_usb_submit_rx_urb(context, size);
 244         } else {
 245                 if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) {
 246                         mwifiex_usb_submit_rx_urb(context, size);
 247                 } else {
 248                         context->skb = NULL;
 249                 }
 250         }
 251
 252         return;
 253 }
 254
 255 static void mwifiex_usb_tx_complete(struct urb *urb)
 256 {
 257         struct urb_context *context = (struct urb_context *)(urb->context);
 258         struct mwifiex_adapter *adapter = context->adapter;
 259         struct usb_card_rec *card = adapter->card;
 260         struct usb_tx_data_port *port;
 261         int i;
 262
 263         mwifiex_dbg(adapter, INFO,
 264                     "%s: status: %d\n", __func__, urb->status);
 265
 266         if (context->ep == card->tx_cmd_ep) {
 267                 mwifiex_dbg(adapter, CMD,
 268                             "%s: CMD\n", __func__);
 269                 atomic_dec(&card->tx_cmd_urb_pending);
 270                 adapter->cmd_sent = false;
 271         } else {
 272                 mwifiex_dbg(adapter, DATA,
 273                             "%s: DATA\n", __func__);
 274                 mwifiex_write_data_complete(adapter, context->skb, 0,
 275                                             urb->status ? -1 : 0);
 276                 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 277                         port = &card->port[i];
 278                         if (context->ep == port->tx_data_ep) {
 279                                 atomic_dec(&port->tx_data_urb_pending);
 280                                 port->block_status = false;
 281                                 break;
 282                         }
 283                 }
 284                 adapter->data_sent = false;
 285         }
 286
 287         if (card->mc_resync_flag)
 288                 mwifiex_multi_chan_resync(adapter);
 289
 290         mwifiex_queue_main_work(adapter);
 291
 292         return;
 293 }
 294
 295 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
 296 {
 297         struct mwifiex_adapter *adapter = ctx->adapter;
 298         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 299
 300         if (card->rx_cmd_ep != ctx->ep) {
 301                 ctx->skb = dev_alloc_skb(size);
 302                 if (!ctx->skb) {
 303                         mwifiex_dbg(adapter, ERROR,
 304                                     "%s: dev_alloc_skb failed\n", __func__);
 305                         return -ENOMEM;
 306                 }
 307         }
 308
 309         if (card->rx_cmd_ep == ctx->ep &&
 310             card->rx_cmd_ep_type == USB_ENDPOINT_XFER_INT)
 311                 usb_fill_int_urb(ctx->urb, card->udev,
 312                                  usb_rcvintpipe(card->udev, ctx->ep),
 313                                  ctx->skb->data, size, mwifiex_usb_rx_complete,
 314                                  (void *)ctx, card->rx_cmd_interval);
 315         else
 316                 usb_fill_bulk_urb(ctx->urb, card->udev,
 317                                   usb_rcvbulkpipe(card->udev, ctx->ep),
 318                                   ctx->skb->data, size, mwifiex_usb_rx_complete,
 319                                   (void *)ctx);
 320
 321         if (card->rx_cmd_ep == ctx->ep)
 322                 atomic_inc(&card->rx_cmd_urb_pending);
 323         else
 324                 atomic_inc(&card->rx_data_urb_pending);
 325
 326         if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
 327                 mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n");
 328                 dev_kfree_skb_any(ctx->skb);
 329                 ctx->skb = NULL;
 330
 331                 if (card->rx_cmd_ep == ctx->ep)
 332                         atomic_dec(&card->rx_cmd_urb_pending);
 333                 else
 334                         atomic_dec(&card->rx_data_urb_pending);
 335
 336                 return -1;
 337         }
 338
 339         return 0;
 340 }
 341
 342 static void mwifiex_usb_free(struct usb_card_rec *card)
 343 {
 344         struct usb_tx_data_port *port;
 345         int i, j;
 346
 347         if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
 348                 usb_kill_urb(card->rx_cmd.urb);
 349
 350         usb_free_urb(card->rx_cmd.urb);
 351         card->rx_cmd.urb = NULL;
 352
 353         if (atomic_read(&card->rx_data_urb_pending))
 354                 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
 355                         if (card->rx_data_list[i].urb)
 356                                 usb_kill_urb(card->rx_data_list[i].urb);
 357
 358         for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
 359                 usb_free_urb(card->rx_data_list[i].urb);
 360                 card->rx_data_list[i].urb = NULL;
 361         }
 362
 363         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 364                 port = &card->port[i];
 365                 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
 366                         usb_free_urb(port->tx_data_list[j].urb);
 367                         port->tx_data_list[j].urb = NULL;
 368                 }
 369         }
 370
 371         usb_free_urb(card->tx_cmd.urb);
 372         card->tx_cmd.urb = NULL;
 373
 374         return;
 375 }
 376
 377 /* This function probes an mwifiex device and registers it. It allocates
 378  * the card structure, initiates the device registration and initialization
 379  * procedure by adding a logical interface.
 380  */
 381 static int mwifiex_usb_probe(struct usb_interface *intf,
 382                              const struct usb_device_id *id)
 383 {
 384         struct usb_device *udev = interface_to_usbdev(intf);
 385         struct usb_host_interface *iface_desc = intf->cur_altsetting;
 386         struct usb_endpoint_descriptor *epd;
 387         int ret, i;
 388         struct usb_card_rec *card;
 389         u16 id_vendor, id_product, bcd_device;
 390
 391         card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL);
 392         if (!card)
 393                 return -ENOMEM;
 394
 395         init_completion(&card->fw_done);
 396
 397         id_vendor = le16_to_cpu(udev->descriptor.idVendor);
 398         id_product = le16_to_cpu(udev->descriptor.idProduct);
 399         bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
 400         pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
 401                  id_vendor, id_product, bcd_device);
 402
 403         /* PID_1 is used for firmware downloading only */
 404         switch (id_product) {
 405         case USB8766_PID_1:
 406         case USB8797_PID_1:
 407         case USB8801_PID_1:
 408         case USB8997_PID_1:
 409                 card->usb_boot_state = USB8XXX_FW_DNLD;
 410                 break;
 411         case USB8766_PID_2:
 412         case USB8797_PID_2:
 413         case USB8801_PID_2:
 414         case USB8997_PID_2:
 415                 card->usb_boot_state = USB8XXX_FW_READY;
 416                 break;
 417         default:
 418                 pr_warn("unknown id_product %#x\n", id_product);
 419                 card->usb_boot_state = USB8XXX_FW_DNLD;
 420                 break;
 421         }
 422
 423         card->udev = udev;
 424         card->intf = intf;
 425
 426         pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n",
 427                  udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
 428                  udev->descriptor.bDeviceSubClass,
 429                  udev->descriptor.bDeviceProtocol);
 430
 431         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 432                 epd = &iface_desc->endpoint[i].desc;
 433                 if (usb_endpoint_dir_in(epd) &&
 434                     usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
 435                     (usb_endpoint_xfer_bulk(epd) ||
 436                      usb_endpoint_xfer_int(epd))) {
 437                         card->rx_cmd_ep_type = usb_endpoint_type(epd);
 438                         card->rx_cmd_interval = epd->bInterval;
 439                         pr_debug("info: Rx CMD/EVT:: max pkt size: %d, addr: %d, ep_type: %d\n",
 440                                  le16_to_cpu(epd->wMaxPacketSize),
 441                                  epd->bEndpointAddress, card->rx_cmd_ep_type);
 442                         card->rx_cmd_ep = usb_endpoint_num(epd);
 443                         atomic_set(&card->rx_cmd_urb_pending, 0);
 444                 }
 445                 if (usb_endpoint_dir_in(epd) &&
 446                     usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
 447                     usb_endpoint_xfer_bulk(epd)) {
 448                         pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
 449                                  le16_to_cpu(epd->wMaxPacketSize),
 450                                  epd->bEndpointAddress);
 451                         card->rx_data_ep = usb_endpoint_num(epd);
 452                         atomic_set(&card->rx_data_urb_pending, 0);
 453                 }
 454                 if (usb_endpoint_dir_out(epd) &&
 455                     usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
 456                     usb_endpoint_xfer_bulk(epd)) {
 457                         pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
 458                                  le16_to_cpu(epd->wMaxPacketSize),
 459                                  epd->bEndpointAddress);
 460                         card->port[0].tx_data_ep = usb_endpoint_num(epd);
 461                         atomic_set(&card->port[0].tx_data_urb_pending, 0);
 462                 }
 463                 if (usb_endpoint_dir_out(epd) &&
 464                     usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 &&
 465                     usb_endpoint_xfer_bulk(epd)) {
 466                         pr_debug("info: bulk OUT chan2:\t"
 467                                  "max pkt size: %d, addr: %d\n",
 468                                  le16_to_cpu(epd->wMaxPacketSize),
 469                                  epd->bEndpointAddress);
 470                         card->port[1].tx_data_ep = usb_endpoint_num(epd);
 471                         atomic_set(&card->port[1].tx_data_urb_pending, 0);
 472                 }
 473                 if (usb_endpoint_dir_out(epd) &&
 474                     usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
 475                     (usb_endpoint_xfer_bulk(epd) ||
 476                      usb_endpoint_xfer_int(epd))) {
 477                         card->tx_cmd_ep_type = usb_endpoint_type(epd);
 478                         card->tx_cmd_interval = epd->bInterval;
 479                         pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
 480                                  le16_to_cpu(epd->wMaxPacketSize),
 481                                  epd->bEndpointAddress);
 482                         pr_debug("info: Tx CMD:: max pkt size: %d, addr: %d, ep_type: %d\n",
 483                                  le16_to_cpu(epd->wMaxPacketSize),
 484                                  epd->bEndpointAddress, card->tx_cmd_ep_type);
 485                         card->tx_cmd_ep = usb_endpoint_num(epd);
 486                         atomic_set(&card->tx_cmd_urb_pending, 0);
 487                         card->bulk_out_maxpktsize =
 488                                         le16_to_cpu(epd->wMaxPacketSize);
 489                 }
 490         }
 491
 492         usb_set_intfdata(intf, card);
 493
 494         ret = mwifiex_add_card(card, &card->fw_done, &usb_ops,
 495                                MWIFIEX_USB, &card->udev->dev);
 496         if (ret) {
 497                 pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
 498                 usb_reset_device(udev);
 499                 return ret;
 500         }
 501
 502         usb_get_dev(udev);
 503
 504         return 0;
 505 }
 506
 507 /* Kernel needs to suspend all functions separately. Therefore all
 508  * registered functions must have drivers with suspend and resume
 509  * methods. Failing that the kernel simply removes the whole card.
 510  *
 511  * If already not suspended, this function allocates and sends a
 512  * 'host sleep activate' request to the firmware and turns off the traffic.
 513  */
 514 static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
 515 {
 516         struct usb_card_rec *card = usb_get_intfdata(intf);
 517         struct mwifiex_adapter *adapter;
 518         struct usb_tx_data_port *port;
 519         int i, j;
 520
 521         /* Might still be loading firmware */
 522         wait_for_completion(&card->fw_done);
 523
 524         adapter = card->adapter;
 525         if (!adapter) {
 526                 dev_err(&intf->dev, "card is not valid\n");
 527                 return 0;
 528         }
 529
 530         if (unlikely(adapter->is_suspended))
 531                 mwifiex_dbg(adapter, WARN,
 532                             "Device already suspended\n");
 533
 534         /* Enable the Host Sleep */
 535         if (!mwifiex_enable_hs(adapter)) {
 536                 mwifiex_dbg(adapter, ERROR,
 537                             "cmd: failed to suspend\n");
 538                 adapter->hs_enabling = false;
 539                 return -EFAULT;
 540         }
 541
 542
 543         /* 'is_suspended' flag indicates device is suspended.
 544          * It must be set here before the usb_kill_urb() calls. Reason
 545          * is in the complete handlers, urb->status(= -ENOENT) and
 546          * this flag is used in combination to distinguish between a
 547          * 'suspended' state and a 'disconnect' one.
 548          */
 549         adapter->is_suspended = true;
 550         adapter->hs_enabling = false;
 551
 552         if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
 553                 usb_kill_urb(card->rx_cmd.urb);
 554
 555         if (atomic_read(&card->rx_data_urb_pending))
 556                 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
 557                         if (card->rx_data_list[i].urb)
 558                                 usb_kill_urb(card->rx_data_list[i].urb);
 559
 560         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 561                 port = &card->port[i];
 562                 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
 563                         if (port->tx_data_list[j].urb)
 564                                 usb_kill_urb(port->tx_data_list[j].urb);
 565                 }
 566         }
 567
 568         if (card->tx_cmd.urb)
 569                 usb_kill_urb(card->tx_cmd.urb);
 570
 571         return 0;
 572 }
 573
 574 /* Kernel needs to suspend all functions separately. Therefore all
 575  * registered functions must have drivers with suspend and resume
 576  * methods. Failing that the kernel simply removes the whole card.
 577  *
 578  * If already not resumed, this function turns on the traffic and
 579  * sends a 'host sleep cancel' request to the firmware.
 580  */
 581 static int mwifiex_usb_resume(struct usb_interface *intf)
 582 {
 583         struct usb_card_rec *card = usb_get_intfdata(intf);
 584         struct mwifiex_adapter *adapter;
 585         int i;
 586
 587         if (!card->adapter) {
 588                 dev_err(&intf->dev, "%s: card->adapter is NULL\n",
 589                         __func__);
 590                 return 0;
 591         }
 592         adapter = card->adapter;
 593
 594         if (unlikely(!adapter->is_suspended)) {
 595                 mwifiex_dbg(adapter, WARN,
 596                             "Device already resumed\n");
 597                 return 0;
 598         }
 599
 600         /* Indicate device resumed. The netdev queue will be resumed only
 601          * after the urbs have been re-submitted
 602          */
 603         adapter->is_suspended = false;
 604
 605         if (!atomic_read(&card->rx_data_urb_pending))
 606                 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
 607                         mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
 608                                                   MWIFIEX_RX_DATA_BUF_SIZE);
 609
 610         if (!atomic_read(&card->rx_cmd_urb_pending)) {
 611                 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
 612                 if (card->rx_cmd.skb)
 613                         mwifiex_usb_submit_rx_urb(&card->rx_cmd,
 614                                                   MWIFIEX_RX_CMD_BUF_SIZE);
 615         }
 616
 617         /* Disable Host Sleep */
 618         if (adapter->hs_activated)
 619                 mwifiex_cancel_hs(mwifiex_get_priv(adapter,
 620                                                    MWIFIEX_BSS_ROLE_ANY),
 621                                   MWIFIEX_ASYNC_CMD);
 622
 623         return 0;
 624 }
 625
 626 static void mwifiex_usb_disconnect(struct usb_interface *intf)
 627 {
 628         struct usb_card_rec *card = usb_get_intfdata(intf);
 629         struct mwifiex_adapter *adapter;
 630
 631         wait_for_completion(&card->fw_done);
 632
 633         adapter = card->adapter;
 634         if (!adapter || !adapter->priv_num)
 635                 return;
 636
 637         if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) {
 638                 mwifiex_deauthenticate_all(adapter);
 639
 640                 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
 641                                                           MWIFIEX_BSS_ROLE_ANY),
 642                                          MWIFIEX_FUNC_SHUTDOWN);
 643         }
 644
 645         mwifiex_usb_free(card);
 646
 647         mwifiex_dbg(adapter, FATAL,
 648                     "%s: removing card\n", __func__);
 649         mwifiex_remove_card(adapter);
 650
 651         usb_put_dev(interface_to_usbdev(intf));
 652 }
 653
 654 static struct usb_driver mwifiex_usb_driver = {
 655         .name = "mwifiex_usb",
 656         .probe = mwifiex_usb_probe,
 657         .disconnect = mwifiex_usb_disconnect,
 658         .id_table = mwifiex_usb_table,
 659         .suspend = mwifiex_usb_suspend,
 660         .resume = mwifiex_usb_resume,
 661         .soft_unbind = 1,
 662 };
 663
 664 static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
 665 {
 666         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 667         struct usb_tx_data_port *port;
 668         int i, j;
 669
 670         card->tx_cmd.adapter = adapter;
 671         card->tx_cmd.ep = card->tx_cmd_ep;
 672
 673         card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
 674         if (!card->tx_cmd.urb)
 675                 return -ENOMEM;
 676
 677         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 678                 port = &card->port[i];
 679                 if (!port->tx_data_ep)
 680                         continue;
 681                 port->tx_data_ix = 0;
 682                 if (port->tx_data_ep == MWIFIEX_USB_EP_DATA)
 683                         port->block_status = false;
 684                 else
 685                         port->block_status = true;
 686                 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) {
 687                         port->tx_data_list[j].adapter = adapter;
 688                         port->tx_data_list[j].ep = port->tx_data_ep;
 689                         port->tx_data_list[j].urb =
 690                                         usb_alloc_urb(0, GFP_KERNEL);
 691                         if (!port->tx_data_list[j].urb)
 692                                 return -ENOMEM;
 693                 }
 694         }
 695
 696         return 0;
 697 }
 698
 699 static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
 700 {
 701         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 702         int i;
 703
 704         card->rx_cmd.adapter = adapter;
 705         card->rx_cmd.ep = card->rx_cmd_ep;
 706
 707         card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
 708         if (!card->rx_cmd.urb)
 709                 return -ENOMEM;
 710
 711         card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
 712         if (!card->rx_cmd.skb)
 713                 return -ENOMEM;
 714
 715         if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
 716                 return -1;
 717
 718         for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
 719                 card->rx_data_list[i].adapter = adapter;
 720                 card->rx_data_list[i].ep = card->rx_data_ep;
 721
 722                 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
 723                 if (!card->rx_data_list[i].urb)
 724                         return -1;
 725                 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
 726                                               MWIFIEX_RX_DATA_BUF_SIZE))
 727                         return -1;
 728         }
 729
 730         return 0;
 731 }
 732
 733 static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
 734                                    u32 *len, u8 ep, u32 timeout)
 735 {
 736         struct usb_card_rec *card = adapter->card;
 737         int actual_length, ret;
 738
 739         if (!(*len % card->bulk_out_maxpktsize))
 740                 (*len)++;
 741
 742         /* Send the data block */
 743         ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
 744                            *len, &actual_length, timeout);
 745         if (ret) {
 746                 mwifiex_dbg(adapter, ERROR,
 747                             "usb_bulk_msg for tx failed: %d\n", ret);
 748                 return ret;
 749         }
 750
 751         *len = actual_length;
 752
 753         return ret;
 754 }
 755
 756 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
 757                                   u32 *len, u8 ep, u32 timeout)
 758 {
 759         struct usb_card_rec *card = adapter->card;
 760         int actual_length, ret;
 761
 762         /* Receive the data response */
 763         ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
 764                            *len, &actual_length, timeout);
 765         if (ret) {
 766                 mwifiex_dbg(adapter, ERROR,
 767                             "usb_bulk_msg for rx failed: %d\n", ret);
 768                 return ret;
 769         }
 770
 771         *len = actual_length;
 772
 773         return ret;
 774 }
 775
 776 static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter)
 777 {
 778         struct usb_card_rec *card = adapter->card;
 779         u8 active_port = MWIFIEX_USB_EP_DATA;
 780         struct mwifiex_private *priv = NULL;
 781         int i;
 782
 783         if (adapter->usb_mc_status) {
 784                 for (i = 0; i < adapter->priv_num; i++) {
 785                         priv = adapter->priv[i];
 786                         if (!priv)
 787                                 continue;
 788                         if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP &&
 789                              !priv->bss_started) ||
 790                             (priv->bss_role == MWIFIEX_BSS_ROLE_STA &&
 791                              !priv->media_connected))
 792                                 priv->usb_port = MWIFIEX_USB_EP_DATA;
 793                 }
 794                 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++)
 795                         card->port[i].block_status = false;
 796         } else {
 797                 for (i = 0; i < adapter->priv_num; i++) {
 798                         priv = adapter->priv[i];
 799                         if (!priv)
 800                                 continue;
 801                         if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP &&
 802                              priv->bss_started) ||
 803                             (priv->bss_role == MWIFIEX_BSS_ROLE_STA &&
 804                              priv->media_connected)) {
 805                                 active_port = priv->usb_port;
 806                                 break;
 807                         }
 808                 }
 809                 for (i = 0; i < adapter->priv_num; i++) {
 810                         priv = adapter->priv[i];
 811                         if (priv)
 812                                 priv->usb_port = active_port;
 813                 }
 814                 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
 815                         if (active_port == card->port[i].tx_data_ep)
 816                                 card->port[i].block_status = false;
 817                         else
 818                                 card->port[i].block_status = true;
 819                 }
 820         }
 821 }
 822
 823 static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv)
 824 {
 825         struct usb_card_rec *card = priv->adapter->card;
 826         int idx;
 827
 828         for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) {
 829                 if (priv->usb_port == card->port[idx].tx_data_ep)
 830                         return !card->port[idx].block_status;
 831         }
 832
 833         return false;
 834 }
 835
 836 static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter)
 837 {
 838         struct usb_card_rec *card = adapter->card;
 839         int i;
 840
 841         for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++)
 842                 if (!card->port[i].block_status)
 843                         return false;
 844
 845         return true;
 846 }
 847
 848 /* This function write a command/data packet to card. */
 849 static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
 850                                     struct sk_buff *skb,
 851                                     struct mwifiex_tx_param *tx_param)
 852 {
 853         struct usb_card_rec *card = adapter->card;
 854         struct urb_context *context = NULL;
 855         struct usb_tx_data_port *port = NULL;
 856         u8 *data = (u8 *)skb->data;
 857         struct urb *tx_urb;
 858         int idx, ret = -EINPROGRESS;
 859
 860         if (adapter->is_suspended) {
 861                 mwifiex_dbg(adapter, ERROR,
 862                             "%s: not allowed while suspended\n", __func__);
 863                 return -1;
 864         }
 865
 866         if (adapter->surprise_removed) {
 867                 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__);
 868                 return -1;
 869         }
 870
 871         mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep);
 872
 873         if (ep == card->tx_cmd_ep) {
 874                 context = &card->tx_cmd;
 875         } else {
 876                 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) {
 877                         if (ep == card->port[idx].tx_data_ep) {
 878                                 port = &card->port[idx];
 879                                 if (atomic_read(&port->tx_data_urb_pending)
 880                                     >= MWIFIEX_TX_DATA_URB) {
 881                                         port->block_status = true;
 882                                         adapter->data_sent =
 883                                                 mwifiex_usb_data_sent(adapter);
 884                                         return -EBUSY;
 885                                 }
 886                                 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB)
 887                                         port->tx_data_ix = 0;
 888                                 context =
 889                                         &port->tx_data_list[port->tx_data_ix++];
 890                                 break;
 891                         }
 892                 }
 893                 if (!port) {
 894                         mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n");
 895                         return -1;
 896                 }
 897         }
 898
 899         context->adapter = adapter;
 900         context->ep = ep;
 901         context->skb = skb;
 902         tx_urb = context->urb;
 903
 904         if (ep == card->tx_cmd_ep &&
 905             card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT)
 906                 usb_fill_int_urb(tx_urb, card->udev,
 907                                  usb_sndintpipe(card->udev, ep), data,
 908                                  skb->len, mwifiex_usb_tx_complete,
 909                                  (void *)context, card->tx_cmd_interval);
 910         else
 911                 usb_fill_bulk_urb(tx_urb, card->udev,
 912                                   usb_sndbulkpipe(card->udev, ep), data,
 913                                   skb->len, mwifiex_usb_tx_complete,
 914                                   (void *)context);
 915
 916         tx_urb->transfer_flags |= URB_ZERO_PACKET;
 917
 918         if (ep == card->tx_cmd_ep)
 919                 atomic_inc(&card->tx_cmd_urb_pending);
 920         else
 921                 atomic_inc(&port->tx_data_urb_pending);
 922
 923         if (ep != card->tx_cmd_ep &&
 924             atomic_read(&port->tx_data_urb_pending) ==
 925                                         MWIFIEX_TX_DATA_URB) {
 926                 port->block_status = true;
 927                 adapter->data_sent = mwifiex_usb_data_sent(adapter);
 928                 ret = -ENOSR;
 929         }
 930
 931         if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
 932                 mwifiex_dbg(adapter, ERROR,
 933                             "%s: usb_submit_urb failed\n", __func__);
 934                 if (ep == card->tx_cmd_ep) {
 935                         atomic_dec(&card->tx_cmd_urb_pending);
 936                 } else {
 937                         atomic_dec(&port->tx_data_urb_pending);
 938                         port->block_status = false;
 939                         adapter->data_sent = false;
 940                         if (port->tx_data_ix)
 941                                 port->tx_data_ix--;
 942                         else
 943                                 port->tx_data_ix = MWIFIEX_TX_DATA_URB;
 944                 }
 945                 ret = -1;
 946         }
 947
 948         return ret;
 949 }
 950
 951 /* This function register usb device and initialize parameter. */
 952 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
 953 {
 954         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 955
 956         card->adapter = adapter;
 957
 958         switch (le16_to_cpu(card->udev->descriptor.idProduct)) {
 959         case USB8997_PID_1:
 960         case USB8997_PID_2:
 961                 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K;
 962                 strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME);
 963                 adapter->ext_scan = true;
 964                 break;
 965         case USB8766_PID_1:
 966         case USB8766_PID_2:
 967                 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
 968                 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME);
 969                 adapter->ext_scan = true;
 970                 break;
 971         case USB8801_PID_1:
 972         case USB8801_PID_2:
 973                 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
 974                 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME);
 975                 adapter->ext_scan = false;
 976                 break;
 977         case USB8797_PID_1:
 978         case USB8797_PID_2:
 979         default:
 980                 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
 981                 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
 982                 break;
 983         }
 984
 985         adapter->usb_mc_status = false;
 986         adapter->usb_mc_setup = false;
 987
 988         return 0;
 989 }
 990
 991 static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
 992 {
 993         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
 994
 995         card->adapter = NULL;
 996 }
 997
 998 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
 999                                     struct mwifiex_fw_image *fw)
1000 {
1001         int ret = 0;
1002         u8 *firmware = fw->fw_buf, *recv_buff;
1003         u32 retries = USB8XXX_FW_MAX_RETRY + 1;
1004         u32 dlen;
1005         u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
1006         struct fw_data *fwdata;
1007         struct fw_sync_header sync_fw;
1008         u8 check_winner = 1;
1009
1010         if (!firmware) {
1011                 mwifiex_dbg(adapter, ERROR,
1012                             "No firmware image found! Terminating download\n");
1013                 ret = -1;
1014                 goto fw_exit;
1015         }
1016
1017         /* Allocate memory for transmit */
1018         fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
1019         if (!fwdata) {
1020                 ret = -ENOMEM;
1021                 goto fw_exit;
1022         }
1023
1024         /* Allocate memory for receive */
1025         recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
1026         if (!recv_buff) {
1027                 ret = -ENOMEM;
1028                 goto cleanup;
1029         }
1030
1031         do {
1032                 /* Send pseudo data to check winner status first */
1033                 if (check_winner) {
1034                         memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
1035                         dlen = 0;
1036                 } else {
1037                         /* copy the header of the fw_data to get the length */
1038                         memcpy(&fwdata->fw_hdr, &firmware[tlen],
1039                                sizeof(struct fw_header));
1040
1041                         dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
1042                         dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
1043                         tlen += sizeof(struct fw_header);
1044
1045                         /* Command 7 doesn't have data length field */
1046                         if (dnld_cmd == FW_CMD_7)
1047                                 dlen = 0;
1048
1049                         memcpy(fwdata->data, &firmware[tlen], dlen);
1050
1051                         fwdata->seq_num = cpu_to_le32(fw_seqnum);
1052                         tlen += dlen;
1053                 }
1054
1055                 /* If the send/receive fails or CRC occurs then retry */
1056                 while (--retries) {
1057                         u8 *buf = (u8 *)fwdata;
1058                         u32 len = FW_DATA_XMIT_SIZE;
1059
1060                         /* send the firmware block */
1061                         ret = mwifiex_write_data_sync(adapter, buf, &len,
1062                                                 MWIFIEX_USB_EP_CMD_EVENT,
1063                                                 MWIFIEX_USB_TIMEOUT);
1064                         if (ret) {
1065                                 mwifiex_dbg(adapter, ERROR,
1066                                             "write_data_sync: failed: %d\n",
1067                                             ret);
1068                                 continue;
1069                         }
1070
1071                         buf = recv_buff;
1072                         len = FW_DNLD_RX_BUF_SIZE;
1073
1074                         /* Receive the firmware block response */
1075                         ret = mwifiex_read_data_sync(adapter, buf, &len,
1076                                                 MWIFIEX_USB_EP_CMD_EVENT,
1077                                                 MWIFIEX_USB_TIMEOUT);
1078                         if (ret) {
1079                                 mwifiex_dbg(adapter, ERROR,
1080                                             "read_data_sync: failed: %d\n",
1081                                             ret);
1082                                 continue;
1083                         }
1084
1085                         memcpy(&sync_fw, recv_buff,
1086                                sizeof(struct fw_sync_header));
1087
1088                         /* check 1st firmware block resp for highest bit set */
1089                         if (check_winner) {
1090                                 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
1091                                         mwifiex_dbg(adapter, WARN,
1092                                                     "USB is not the winner %#x\n",
1093                                                     sync_fw.cmd);
1094
1095                                         /* returning success */
1096                                         ret = 0;
1097                                         goto cleanup;
1098                                 }
1099
1100                                 mwifiex_dbg(adapter, MSG,
1101                                             "start to download FW...\n");
1102
1103                                 check_winner = 0;
1104                                 break;
1105                         }
1106
1107                         /* check the firmware block response for CRC errors */
1108                         if (sync_fw.cmd) {
1109                                 mwifiex_dbg(adapter, ERROR,
1110                                             "FW received block with CRC %#x\n",
1111                                             sync_fw.cmd);
1112                                 ret = -1;
1113                                 continue;
1114                         }
1115
1116                         retries = USB8XXX_FW_MAX_RETRY + 1;
1117                         break;
1118                 }
1119                 fw_seqnum++;
1120         } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
1121
1122 cleanup:
1123         mwifiex_dbg(adapter, MSG,
1124                     "info: FW download over, size %d bytes\n", tlen);
1125
1126         kfree(recv_buff);
1127         kfree(fwdata);
1128
1129         if (retries)
1130                 ret = 0;
1131 fw_exit:
1132         return ret;
1133 }
1134
1135 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
1136                         struct mwifiex_fw_image *fw)
1137 {
1138         int ret;
1139         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1140
1141         if (card->usb_boot_state == USB8XXX_FW_DNLD) {
1142                 ret = mwifiex_prog_fw_w_helper(adapter, fw);
1143                 if (ret)
1144                         return -1;
1145
1146                 /* Boot state changes after successful firmware download */
1147                 if (card->usb_boot_state == USB8XXX_FW_DNLD)
1148                         return -1;
1149         }
1150
1151         ret = mwifiex_usb_rx_init(adapter);
1152         if (!ret)
1153                 ret = mwifiex_usb_tx_init(adapter);
1154
1155         return ret;
1156 }
1157
1158 static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
1159 {
1160         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1161
1162         skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
1163         if ((ep == card->rx_cmd_ep) &&
1164             (!atomic_read(&card->rx_cmd_urb_pending)))
1165                 mwifiex_usb_submit_rx_urb(&card->rx_cmd,
1166                                           MWIFIEX_RX_CMD_BUF_SIZE);
1167
1168         return;
1169 }
1170
1171 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
1172                                        struct sk_buff *skb)
1173 {
1174         mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
1175
1176         return 0;
1177 }
1178
1179 /* This function wakes up the card. */
1180 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
1181 {
1182         /* Simulation of HS_AWAKE event */
1183         adapter->pm_wakeup_fw_try = false;
1184         del_timer(&adapter->wakeup_timer);
1185         adapter->pm_wakeup_card_req = false;
1186         adapter->ps_state = PS_STATE_AWAKE;
1187
1188         return 0;
1189 }
1190
1191 static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter)
1192 {
1193         struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
1194         int i;
1195         struct urb_context *ctx;
1196
1197         for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
1198                 if (card->rx_data_list[i].skb)
1199                         continue;
1200                 ctx = &card->rx_data_list[i];
1201                 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE);
1202         }
1203 }
1204
1205 /* This function is called after the card has woken up. */
1206 static inline int
1207 mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
1208 {
1209         return 0;
1210 }
1211
1212 static struct mwifiex_if_ops usb_ops = {
1213         .register_dev =         mwifiex_register_dev,
1214         .unregister_dev =       mwifiex_unregister_dev,
1215         .wakeup =               mwifiex_pm_wakeup_card,
1216         .wakeup_complete =      mwifiex_pm_wakeup_card_complete,
1217
1218         /* USB specific */
1219         .dnld_fw =              mwifiex_usb_dnld_fw,
1220         .cmdrsp_complete =      mwifiex_usb_cmd_event_complete,
1221         .event_complete =       mwifiex_usb_cmd_event_complete,
1222         .host_to_card =         mwifiex_usb_host_to_card,
1223         .submit_rem_rx_urbs =   mwifiex_usb_submit_rem_rx_urbs,
1224         .multi_port_resync =    mwifiex_usb_port_resync,
1225         .is_port_ready =        mwifiex_usb_is_port_ready,
1226 };
1227
1228 module_usb_driver(mwifiex_usb_driver);
1229
1230 MODULE_AUTHOR("Marvell International Ltd.");
1231 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
1232 MODULE_VERSION(USB_VERSION);
1233 MODULE_LICENSE("GPL v2");
1234 MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME);
1235 MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME);
1236 MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME);
1237 MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME);