| 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 u8 user_rmmod; |
| 26 | static struct mwifiex_if_ops usb_ops; |
| 27 | static struct semaphore add_remove_card_sem; |
| 28 | |
| 29 | static struct usb_device_id mwifiex_usb_table[] = { |
| 30 | /* 8766 */ |
| 31 | {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)}, |
| 32 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2, |
| 33 | USB_CLASS_VENDOR_SPEC, |
| 34 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 35 | /* 8797 */ |
| 36 | {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)}, |
| 37 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2, |
| 38 | USB_CLASS_VENDOR_SPEC, |
| 39 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 40 | /* 8801 */ |
| 41 | {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)}, |
| 42 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2, |
| 43 | USB_CLASS_VENDOR_SPEC, |
| 44 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 45 | /* 8897 */ |
| 46 | {USB_DEVICE(USB8XXX_VID, USB8897_PID_1)}, |
| 47 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8897_PID_2, |
| 48 | USB_CLASS_VENDOR_SPEC, |
| 49 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 50 | { } /* Terminating entry */ |
| 51 | }; |
| 52 | |
| 53 | MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); |
| 54 | |
| 55 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); |
| 56 | |
| 57 | /* This function handles received packet. Necessary action is taken based on |
| 58 | * cmd/event/data. |
| 59 | */ |
| 60 | static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, |
| 61 | struct sk_buff *skb, u8 ep) |
| 62 | { |
| 63 | u32 recv_type; |
| 64 | __le32 tmp; |
| 65 | int ret; |
| 66 | |
| 67 | if (adapter->hs_activated) |
| 68 | mwifiex_process_hs_config(adapter); |
| 69 | |
| 70 | if (skb->len < INTF_HEADER_LEN) { |
| 71 | mwifiex_dbg(adapter, ERROR, |
| 72 | "%s: invalid skb->len\n", __func__); |
| 73 | return -1; |
| 74 | } |
| 75 | |
| 76 | switch (ep) { |
| 77 | case MWIFIEX_USB_EP_CMD_EVENT: |
| 78 | mwifiex_dbg(adapter, EVENT, |
| 79 | "%s: EP_CMD_EVENT\n", __func__); |
| 80 | skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); |
| 81 | recv_type = le32_to_cpu(tmp); |
| 82 | skb_pull(skb, INTF_HEADER_LEN); |
| 83 | |
| 84 | switch (recv_type) { |
| 85 | case MWIFIEX_USB_TYPE_CMD: |
| 86 | if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { |
| 87 | mwifiex_dbg(adapter, ERROR, |
| 88 | "CMD: skb->len too large\n"); |
| 89 | ret = -1; |
| 90 | goto exit_restore_skb; |
| 91 | } else if (!adapter->curr_cmd) { |
| 92 | mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n"); |
| 93 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) { |
| 94 | mwifiex_process_sleep_confirm_resp( |
| 95 | adapter, skb->data, |
| 96 | skb->len); |
| 97 | ret = 0; |
| 98 | goto exit_restore_skb; |
| 99 | } |
| 100 | ret = -1; |
| 101 | goto exit_restore_skb; |
| 102 | } |
| 103 | |
| 104 | adapter->curr_cmd->resp_skb = skb; |
| 105 | adapter->cmd_resp_received = true; |
| 106 | break; |
| 107 | case MWIFIEX_USB_TYPE_EVENT: |
| 108 | if (skb->len < sizeof(u32)) { |
| 109 | mwifiex_dbg(adapter, ERROR, |
| 110 | "EVENT: skb->len too small\n"); |
| 111 | ret = -1; |
| 112 | goto exit_restore_skb; |
| 113 | } |
| 114 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); |
| 115 | adapter->event_cause = le32_to_cpu(tmp); |
| 116 | mwifiex_dbg(adapter, EVENT, |
| 117 | "event_cause %#x\n", adapter->event_cause); |
| 118 | |
| 119 | if (skb->len > MAX_EVENT_SIZE) { |
| 120 | mwifiex_dbg(adapter, ERROR, |
| 121 | "EVENT: event body too large\n"); |
| 122 | ret = -1; |
| 123 | goto exit_restore_skb; |
| 124 | } |
| 125 | |
| 126 | memcpy(adapter->event_body, skb->data + |
| 127 | MWIFIEX_EVENT_HEADER_LEN, skb->len); |
| 128 | |
| 129 | adapter->event_received = true; |
| 130 | adapter->event_skb = skb; |
| 131 | break; |
| 132 | default: |
| 133 | mwifiex_dbg(adapter, ERROR, |
| 134 | "unknown recv_type %#x\n", recv_type); |
| 135 | return -1; |
| 136 | } |
| 137 | break; |
| 138 | case MWIFIEX_USB_EP_DATA: |
| 139 | mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__); |
| 140 | if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { |
| 141 | mwifiex_dbg(adapter, ERROR, |
| 142 | "DATA: skb->len too large\n"); |
| 143 | return -1; |
| 144 | } |
| 145 | |
| 146 | skb_queue_tail(&adapter->rx_data_q, skb); |
| 147 | adapter->data_received = true; |
| 148 | atomic_inc(&adapter->rx_pending); |
| 149 | break; |
| 150 | default: |
| 151 | mwifiex_dbg(adapter, ERROR, |
| 152 | "%s: unknown endport %#x\n", __func__, ep); |
| 153 | return -1; |
| 154 | } |
| 155 | |
| 156 | return -EINPROGRESS; |
| 157 | |
| 158 | exit_restore_skb: |
| 159 | /* The buffer will be reused for further cmds/events */ |
| 160 | skb_push(skb, INTF_HEADER_LEN); |
| 161 | |
| 162 | return ret; |
| 163 | } |
| 164 | |
| 165 | static void mwifiex_usb_rx_complete(struct urb *urb) |
| 166 | { |
| 167 | struct urb_context *context = (struct urb_context *)urb->context; |
| 168 | struct mwifiex_adapter *adapter = context->adapter; |
| 169 | struct sk_buff *skb = context->skb; |
| 170 | struct usb_card_rec *card; |
| 171 | int recv_length = urb->actual_length; |
| 172 | int size, status; |
| 173 | |
| 174 | if (!adapter || !adapter->card) { |
| 175 | pr_err("mwifiex adapter or card structure is not valid\n"); |
| 176 | return; |
| 177 | } |
| 178 | |
| 179 | card = (struct usb_card_rec *)adapter->card; |
| 180 | if (card->rx_cmd_ep == context->ep) |
| 181 | atomic_dec(&card->rx_cmd_urb_pending); |
| 182 | else |
| 183 | atomic_dec(&card->rx_data_urb_pending); |
| 184 | |
| 185 | if (recv_length) { |
| 186 | if (urb->status || (adapter->surprise_removed)) { |
| 187 | mwifiex_dbg(adapter, ERROR, |
| 188 | "URB status is failed: %d\n", urb->status); |
| 189 | /* Do not free skb in case of command ep */ |
| 190 | if (card->rx_cmd_ep != context->ep) |
| 191 | dev_kfree_skb_any(skb); |
| 192 | goto setup_for_next; |
| 193 | } |
| 194 | if (skb->len > recv_length) |
| 195 | skb_trim(skb, recv_length); |
| 196 | else |
| 197 | skb_put(skb, recv_length - skb->len); |
| 198 | |
| 199 | status = mwifiex_usb_recv(adapter, skb, context->ep); |
| 200 | |
| 201 | mwifiex_dbg(adapter, INFO, |
| 202 | "info: recv_length=%d, status=%d\n", |
| 203 | recv_length, status); |
| 204 | if (status == -EINPROGRESS) { |
| 205 | mwifiex_queue_main_work(adapter); |
| 206 | |
| 207 | /* urb for data_ep is re-submitted now; |
| 208 | * urb for cmd_ep will be re-submitted in callback |
| 209 | * mwifiex_usb_recv_complete |
| 210 | */ |
| 211 | if (card->rx_cmd_ep == context->ep) |
| 212 | return; |
| 213 | } else { |
| 214 | if (status == -1) |
| 215 | mwifiex_dbg(adapter, ERROR, |
| 216 | "received data processing failed!\n"); |
| 217 | |
| 218 | /* Do not free skb in case of command ep */ |
| 219 | if (card->rx_cmd_ep != context->ep) |
| 220 | dev_kfree_skb_any(skb); |
| 221 | } |
| 222 | } else if (urb->status) { |
| 223 | if (!adapter->is_suspended) { |
| 224 | mwifiex_dbg(adapter, FATAL, |
| 225 | "Card is removed: %d\n", urb->status); |
| 226 | adapter->surprise_removed = true; |
| 227 | } |
| 228 | dev_kfree_skb_any(skb); |
| 229 | return; |
| 230 | } else { |
| 231 | /* Do not free skb in case of command ep */ |
| 232 | if (card->rx_cmd_ep != context->ep) |
| 233 | dev_kfree_skb_any(skb); |
| 234 | |
| 235 | /* fall through setup_for_next */ |
| 236 | } |
| 237 | |
| 238 | setup_for_next: |
| 239 | if (card->rx_cmd_ep == context->ep) |
| 240 | size = MWIFIEX_RX_CMD_BUF_SIZE; |
| 241 | else |
| 242 | size = MWIFIEX_RX_DATA_BUF_SIZE; |
| 243 | |
| 244 | if (card->rx_cmd_ep == context->ep) { |
| 245 | mwifiex_usb_submit_rx_urb(context, size); |
| 246 | } else { |
| 247 | context->skb = NULL; |
| 248 | if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) |
| 249 | mwifiex_usb_submit_rx_urb(context, size); |
| 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 | |
| 261 | mwifiex_dbg(adapter, INFO, |
| 262 | "%s: status: %d\n", __func__, urb->status); |
| 263 | |
| 264 | if (context->ep == card->tx_cmd_ep) { |
| 265 | mwifiex_dbg(adapter, CMD, |
| 266 | "%s: CMD\n", __func__); |
| 267 | atomic_dec(&card->tx_cmd_urb_pending); |
| 268 | adapter->cmd_sent = false; |
| 269 | } else { |
| 270 | mwifiex_dbg(adapter, DATA, |
| 271 | "%s: DATA\n", __func__); |
| 272 | atomic_dec(&card->tx_data_urb_pending); |
| 273 | mwifiex_write_data_complete(adapter, context->skb, 0, |
| 274 | urb->status ? -1 : 0); |
| 275 | } |
| 276 | |
| 277 | mwifiex_queue_main_work(adapter); |
| 278 | |
| 279 | return; |
| 280 | } |
| 281 | |
| 282 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) |
| 283 | { |
| 284 | struct mwifiex_adapter *adapter = ctx->adapter; |
| 285 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 286 | |
| 287 | if (card->rx_cmd_ep != ctx->ep) { |
| 288 | ctx->skb = dev_alloc_skb(size); |
| 289 | if (!ctx->skb) { |
| 290 | mwifiex_dbg(adapter, ERROR, |
| 291 | "%s: dev_alloc_skb failed\n", __func__); |
| 292 | return -ENOMEM; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | usb_fill_bulk_urb(ctx->urb, card->udev, |
| 297 | usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data, |
| 298 | size, mwifiex_usb_rx_complete, (void *)ctx); |
| 299 | |
| 300 | if (card->rx_cmd_ep == ctx->ep) |
| 301 | atomic_inc(&card->rx_cmd_urb_pending); |
| 302 | else |
| 303 | atomic_inc(&card->rx_data_urb_pending); |
| 304 | |
| 305 | if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { |
| 306 | mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n"); |
| 307 | dev_kfree_skb_any(ctx->skb); |
| 308 | ctx->skb = NULL; |
| 309 | |
| 310 | if (card->rx_cmd_ep == ctx->ep) |
| 311 | atomic_dec(&card->rx_cmd_urb_pending); |
| 312 | else |
| 313 | atomic_dec(&card->rx_data_urb_pending); |
| 314 | |
| 315 | return -1; |
| 316 | } |
| 317 | |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | static void mwifiex_usb_free(struct usb_card_rec *card) |
| 322 | { |
| 323 | int i; |
| 324 | |
| 325 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) |
| 326 | usb_kill_urb(card->rx_cmd.urb); |
| 327 | |
| 328 | usb_free_urb(card->rx_cmd.urb); |
| 329 | card->rx_cmd.urb = NULL; |
| 330 | |
| 331 | if (atomic_read(&card->rx_data_urb_pending)) |
| 332 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 333 | if (card->rx_data_list[i].urb) |
| 334 | usb_kill_urb(card->rx_data_list[i].urb); |
| 335 | |
| 336 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { |
| 337 | usb_free_urb(card->rx_data_list[i].urb); |
| 338 | card->rx_data_list[i].urb = NULL; |
| 339 | } |
| 340 | |
| 341 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { |
| 342 | usb_free_urb(card->tx_data_list[i].urb); |
| 343 | card->tx_data_list[i].urb = NULL; |
| 344 | } |
| 345 | |
| 346 | usb_free_urb(card->tx_cmd.urb); |
| 347 | card->tx_cmd.urb = NULL; |
| 348 | |
| 349 | return; |
| 350 | } |
| 351 | |
| 352 | /* This function probes an mwifiex device and registers it. It allocates |
| 353 | * the card structure, initiates the device registration and initialization |
| 354 | * procedure by adding a logical interface. |
| 355 | */ |
| 356 | static int mwifiex_usb_probe(struct usb_interface *intf, |
| 357 | const struct usb_device_id *id) |
| 358 | { |
| 359 | struct usb_device *udev = interface_to_usbdev(intf); |
| 360 | struct usb_host_interface *iface_desc = intf->cur_altsetting; |
| 361 | struct usb_endpoint_descriptor *epd; |
| 362 | int ret, i; |
| 363 | struct usb_card_rec *card; |
| 364 | u16 id_vendor, id_product, bcd_device, bcd_usb; |
| 365 | |
| 366 | card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); |
| 367 | if (!card) |
| 368 | return -ENOMEM; |
| 369 | |
| 370 | id_vendor = le16_to_cpu(udev->descriptor.idVendor); |
| 371 | id_product = le16_to_cpu(udev->descriptor.idProduct); |
| 372 | bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); |
| 373 | bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB); |
| 374 | pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", |
| 375 | id_vendor, id_product, bcd_device); |
| 376 | |
| 377 | /* PID_1 is used for firmware downloading only */ |
| 378 | switch (id_product) { |
| 379 | case USB8766_PID_1: |
| 380 | case USB8797_PID_1: |
| 381 | case USB8801_PID_1: |
| 382 | case USB8897_PID_1: |
| 383 | card->usb_boot_state = USB8XXX_FW_DNLD; |
| 384 | break; |
| 385 | case USB8766_PID_2: |
| 386 | case USB8797_PID_2: |
| 387 | case USB8801_PID_2: |
| 388 | case USB8897_PID_2: |
| 389 | card->usb_boot_state = USB8XXX_FW_READY; |
| 390 | break; |
| 391 | default: |
| 392 | pr_warn("unknown id_product %#x\n", id_product); |
| 393 | card->usb_boot_state = USB8XXX_FW_DNLD; |
| 394 | break; |
| 395 | } |
| 396 | |
| 397 | card->udev = udev; |
| 398 | card->intf = intf; |
| 399 | |
| 400 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", |
| 401 | udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, |
| 402 | udev->descriptor.bDeviceSubClass, |
| 403 | udev->descriptor.bDeviceProtocol); |
| 404 | |
| 405 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 406 | epd = &iface_desc->endpoint[i].desc; |
| 407 | if (usb_endpoint_dir_in(epd) && |
| 408 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && |
| 409 | usb_endpoint_xfer_bulk(epd)) { |
| 410 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", |
| 411 | le16_to_cpu(epd->wMaxPacketSize), |
| 412 | epd->bEndpointAddress); |
| 413 | card->rx_cmd_ep = usb_endpoint_num(epd); |
| 414 | atomic_set(&card->rx_cmd_urb_pending, 0); |
| 415 | } |
| 416 | if (usb_endpoint_dir_in(epd) && |
| 417 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && |
| 418 | usb_endpoint_xfer_bulk(epd)) { |
| 419 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", |
| 420 | le16_to_cpu(epd->wMaxPacketSize), |
| 421 | epd->bEndpointAddress); |
| 422 | card->rx_data_ep = usb_endpoint_num(epd); |
| 423 | atomic_set(&card->rx_data_urb_pending, 0); |
| 424 | } |
| 425 | if (usb_endpoint_dir_out(epd) && |
| 426 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && |
| 427 | usb_endpoint_xfer_bulk(epd)) { |
| 428 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", |
| 429 | le16_to_cpu(epd->wMaxPacketSize), |
| 430 | epd->bEndpointAddress); |
| 431 | card->tx_data_ep = usb_endpoint_num(epd); |
| 432 | atomic_set(&card->tx_data_urb_pending, 0); |
| 433 | } |
| 434 | if (usb_endpoint_dir_out(epd) && |
| 435 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && |
| 436 | usb_endpoint_xfer_bulk(epd)) { |
| 437 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", |
| 438 | le16_to_cpu(epd->wMaxPacketSize), |
| 439 | epd->bEndpointAddress); |
| 440 | card->tx_cmd_ep = usb_endpoint_num(epd); |
| 441 | atomic_set(&card->tx_cmd_urb_pending, 0); |
| 442 | card->bulk_out_maxpktsize = |
| 443 | le16_to_cpu(epd->wMaxPacketSize); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | usb_set_intfdata(intf, card); |
| 448 | |
| 449 | ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, |
| 450 | MWIFIEX_USB); |
| 451 | if (ret) { |
| 452 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); |
| 453 | usb_reset_device(udev); |
| 454 | kfree(card); |
| 455 | return ret; |
| 456 | } |
| 457 | |
| 458 | usb_get_dev(udev); |
| 459 | |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | /* Kernel needs to suspend all functions separately. Therefore all |
| 464 | * registered functions must have drivers with suspend and resume |
| 465 | * methods. Failing that the kernel simply removes the whole card. |
| 466 | * |
| 467 | * If already not suspended, this function allocates and sends a |
| 468 | * 'host sleep activate' request to the firmware and turns off the traffic. |
| 469 | */ |
| 470 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) |
| 471 | { |
| 472 | struct usb_card_rec *card = usb_get_intfdata(intf); |
| 473 | struct mwifiex_adapter *adapter; |
| 474 | int i; |
| 475 | |
| 476 | if (!card || !card->adapter) { |
| 477 | pr_err("%s: card or card->adapter is NULL\n", __func__); |
| 478 | return 0; |
| 479 | } |
| 480 | adapter = card->adapter; |
| 481 | |
| 482 | if (unlikely(adapter->is_suspended)) |
| 483 | mwifiex_dbg(adapter, WARN, |
| 484 | "Device already suspended\n"); |
| 485 | |
| 486 | mwifiex_enable_hs(adapter); |
| 487 | |
| 488 | /* 'is_suspended' flag indicates device is suspended. |
| 489 | * It must be set here before the usb_kill_urb() calls. Reason |
| 490 | * is in the complete handlers, urb->status(= -ENOENT) and |
| 491 | * this flag is used in combination to distinguish between a |
| 492 | * 'suspended' state and a 'disconnect' one. |
| 493 | */ |
| 494 | adapter->is_suspended = true; |
| 495 | adapter->hs_enabling = false; |
| 496 | |
| 497 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) |
| 498 | usb_kill_urb(card->rx_cmd.urb); |
| 499 | |
| 500 | if (atomic_read(&card->rx_data_urb_pending)) |
| 501 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 502 | if (card->rx_data_list[i].urb) |
| 503 | usb_kill_urb(card->rx_data_list[i].urb); |
| 504 | |
| 505 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) |
| 506 | if (card->tx_data_list[i].urb) |
| 507 | usb_kill_urb(card->tx_data_list[i].urb); |
| 508 | |
| 509 | if (card->tx_cmd.urb) |
| 510 | usb_kill_urb(card->tx_cmd.urb); |
| 511 | |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | /* Kernel needs to suspend all functions separately. Therefore all |
| 516 | * registered functions must have drivers with suspend and resume |
| 517 | * methods. Failing that the kernel simply removes the whole card. |
| 518 | * |
| 519 | * If already not resumed, this function turns on the traffic and |
| 520 | * sends a 'host sleep cancel' request to the firmware. |
| 521 | */ |
| 522 | static int mwifiex_usb_resume(struct usb_interface *intf) |
| 523 | { |
| 524 | struct usb_card_rec *card = usb_get_intfdata(intf); |
| 525 | struct mwifiex_adapter *adapter; |
| 526 | int i; |
| 527 | |
| 528 | if (!card || !card->adapter) { |
| 529 | pr_err("%s: card or card->adapter is NULL\n", __func__); |
| 530 | return 0; |
| 531 | } |
| 532 | adapter = card->adapter; |
| 533 | |
| 534 | if (unlikely(!adapter->is_suspended)) { |
| 535 | mwifiex_dbg(adapter, WARN, |
| 536 | "Device already resumed\n"); |
| 537 | return 0; |
| 538 | } |
| 539 | |
| 540 | /* Indicate device resumed. The netdev queue will be resumed only |
| 541 | * after the urbs have been re-submitted |
| 542 | */ |
| 543 | adapter->is_suspended = false; |
| 544 | |
| 545 | if (!atomic_read(&card->rx_data_urb_pending)) |
| 546 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 547 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], |
| 548 | MWIFIEX_RX_DATA_BUF_SIZE); |
| 549 | |
| 550 | if (!atomic_read(&card->rx_cmd_urb_pending)) { |
| 551 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); |
| 552 | if (card->rx_cmd.skb) |
| 553 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, |
| 554 | MWIFIEX_RX_CMD_BUF_SIZE); |
| 555 | } |
| 556 | |
| 557 | /* Disable Host Sleep */ |
| 558 | if (adapter->hs_activated) |
| 559 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, |
| 560 | MWIFIEX_BSS_ROLE_ANY), |
| 561 | MWIFIEX_ASYNC_CMD); |
| 562 | |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | static void mwifiex_usb_disconnect(struct usb_interface *intf) |
| 567 | { |
| 568 | struct usb_card_rec *card = usb_get_intfdata(intf); |
| 569 | struct mwifiex_adapter *adapter; |
| 570 | |
| 571 | if (!card || !card->adapter) { |
| 572 | pr_err("%s: card or card->adapter is NULL\n", __func__); |
| 573 | return; |
| 574 | } |
| 575 | |
| 576 | adapter = card->adapter; |
| 577 | if (!adapter->priv_num) |
| 578 | return; |
| 579 | |
| 580 | if (user_rmmod) { |
| 581 | #ifdef CONFIG_PM |
| 582 | if (adapter->is_suspended) |
| 583 | mwifiex_usb_resume(intf); |
| 584 | #endif |
| 585 | |
| 586 | mwifiex_deauthenticate_all(adapter); |
| 587 | |
| 588 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, |
| 589 | MWIFIEX_BSS_ROLE_ANY), |
| 590 | MWIFIEX_FUNC_SHUTDOWN); |
| 591 | } |
| 592 | |
| 593 | mwifiex_usb_free(card); |
| 594 | |
| 595 | mwifiex_dbg(adapter, FATAL, |
| 596 | "%s: removing card\n", __func__); |
| 597 | mwifiex_remove_card(adapter, &add_remove_card_sem); |
| 598 | |
| 599 | usb_set_intfdata(intf, NULL); |
| 600 | usb_put_dev(interface_to_usbdev(intf)); |
| 601 | kfree(card); |
| 602 | |
| 603 | return; |
| 604 | } |
| 605 | |
| 606 | static struct usb_driver mwifiex_usb_driver = { |
| 607 | .name = "mwifiex_usb", |
| 608 | .probe = mwifiex_usb_probe, |
| 609 | .disconnect = mwifiex_usb_disconnect, |
| 610 | .id_table = mwifiex_usb_table, |
| 611 | .suspend = mwifiex_usb_suspend, |
| 612 | .resume = mwifiex_usb_resume, |
| 613 | .soft_unbind = 1, |
| 614 | }; |
| 615 | |
| 616 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) |
| 617 | { |
| 618 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 619 | int i; |
| 620 | |
| 621 | card->tx_cmd.adapter = adapter; |
| 622 | card->tx_cmd.ep = card->tx_cmd_ep; |
| 623 | |
| 624 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); |
| 625 | if (!card->tx_cmd.urb) { |
| 626 | mwifiex_dbg(adapter, ERROR, |
| 627 | "tx_cmd.urb allocation failed\n"); |
| 628 | return -ENOMEM; |
| 629 | } |
| 630 | |
| 631 | card->tx_data_ix = 0; |
| 632 | |
| 633 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { |
| 634 | card->tx_data_list[i].adapter = adapter; |
| 635 | card->tx_data_list[i].ep = card->tx_data_ep; |
| 636 | |
| 637 | card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); |
| 638 | if (!card->tx_data_list[i].urb) { |
| 639 | mwifiex_dbg(adapter, ERROR, |
| 640 | "tx_data_list[] urb allocation failed\n"); |
| 641 | return -ENOMEM; |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
| 648 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) |
| 649 | { |
| 650 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 651 | int i; |
| 652 | |
| 653 | card->rx_cmd.adapter = adapter; |
| 654 | card->rx_cmd.ep = card->rx_cmd_ep; |
| 655 | |
| 656 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); |
| 657 | if (!card->rx_cmd.urb) { |
| 658 | mwifiex_dbg(adapter, ERROR, "rx_cmd.urb allocation failed\n"); |
| 659 | return -ENOMEM; |
| 660 | } |
| 661 | |
| 662 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); |
| 663 | if (!card->rx_cmd.skb) |
| 664 | return -ENOMEM; |
| 665 | |
| 666 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) |
| 667 | return -1; |
| 668 | |
| 669 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { |
| 670 | card->rx_data_list[i].adapter = adapter; |
| 671 | card->rx_data_list[i].ep = card->rx_data_ep; |
| 672 | |
| 673 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); |
| 674 | if (!card->rx_data_list[i].urb) { |
| 675 | mwifiex_dbg(adapter, ERROR, |
| 676 | "rx_data_list[] urb allocation failed\n"); |
| 677 | return -1; |
| 678 | } |
| 679 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], |
| 680 | MWIFIEX_RX_DATA_BUF_SIZE)) |
| 681 | return -1; |
| 682 | } |
| 683 | |
| 684 | return 0; |
| 685 | } |
| 686 | |
| 687 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, |
| 688 | u32 *len, u8 ep, u32 timeout) |
| 689 | { |
| 690 | struct usb_card_rec *card = adapter->card; |
| 691 | int actual_length, ret; |
| 692 | |
| 693 | if (!(*len % card->bulk_out_maxpktsize)) |
| 694 | (*len)++; |
| 695 | |
| 696 | /* Send the data block */ |
| 697 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, |
| 698 | *len, &actual_length, timeout); |
| 699 | if (ret) { |
| 700 | mwifiex_dbg(adapter, ERROR, |
| 701 | "usb_bulk_msg for tx failed: %d\n", ret); |
| 702 | return ret; |
| 703 | } |
| 704 | |
| 705 | *len = actual_length; |
| 706 | |
| 707 | return ret; |
| 708 | } |
| 709 | |
| 710 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, |
| 711 | u32 *len, u8 ep, u32 timeout) |
| 712 | { |
| 713 | struct usb_card_rec *card = adapter->card; |
| 714 | int actual_length, ret; |
| 715 | |
| 716 | /* Receive the data response */ |
| 717 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, |
| 718 | *len, &actual_length, timeout); |
| 719 | if (ret) { |
| 720 | mwifiex_dbg(adapter, ERROR, |
| 721 | "usb_bulk_msg for rx failed: %d\n", ret); |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | *len = actual_length; |
| 726 | |
| 727 | return ret; |
| 728 | } |
| 729 | |
| 730 | /* This function write a command/data packet to card. */ |
| 731 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, |
| 732 | struct sk_buff *skb, |
| 733 | struct mwifiex_tx_param *tx_param) |
| 734 | { |
| 735 | struct usb_card_rec *card = adapter->card; |
| 736 | struct urb_context *context; |
| 737 | u8 *data = (u8 *)skb->data; |
| 738 | struct urb *tx_urb; |
| 739 | |
| 740 | if (adapter->is_suspended) { |
| 741 | mwifiex_dbg(adapter, ERROR, |
| 742 | "%s: not allowed while suspended\n", __func__); |
| 743 | return -1; |
| 744 | } |
| 745 | |
| 746 | if (adapter->surprise_removed) { |
| 747 | mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); |
| 748 | return -1; |
| 749 | } |
| 750 | |
| 751 | if (ep == card->tx_data_ep && |
| 752 | atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { |
| 753 | return -EBUSY; |
| 754 | } |
| 755 | |
| 756 | mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); |
| 757 | |
| 758 | if (ep == card->tx_cmd_ep) { |
| 759 | context = &card->tx_cmd; |
| 760 | } else { |
| 761 | if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) |
| 762 | card->tx_data_ix = 0; |
| 763 | context = &card->tx_data_list[card->tx_data_ix++]; |
| 764 | } |
| 765 | |
| 766 | context->adapter = adapter; |
| 767 | context->ep = ep; |
| 768 | context->skb = skb; |
| 769 | tx_urb = context->urb; |
| 770 | |
| 771 | usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), |
| 772 | data, skb->len, mwifiex_usb_tx_complete, |
| 773 | (void *)context); |
| 774 | |
| 775 | tx_urb->transfer_flags |= URB_ZERO_PACKET; |
| 776 | |
| 777 | if (ep == card->tx_cmd_ep) |
| 778 | atomic_inc(&card->tx_cmd_urb_pending); |
| 779 | else |
| 780 | atomic_inc(&card->tx_data_urb_pending); |
| 781 | |
| 782 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { |
| 783 | mwifiex_dbg(adapter, ERROR, |
| 784 | "%s: usb_submit_urb failed\n", __func__); |
| 785 | if (ep == card->tx_cmd_ep) { |
| 786 | atomic_dec(&card->tx_cmd_urb_pending); |
| 787 | } else { |
| 788 | atomic_dec(&card->tx_data_urb_pending); |
| 789 | if (card->tx_data_ix) |
| 790 | card->tx_data_ix--; |
| 791 | else |
| 792 | card->tx_data_ix = MWIFIEX_TX_DATA_URB; |
| 793 | } |
| 794 | |
| 795 | return -1; |
| 796 | } else { |
| 797 | if (ep == card->tx_data_ep && |
| 798 | atomic_read(&card->tx_data_urb_pending) == |
| 799 | MWIFIEX_TX_DATA_URB) |
| 800 | return -ENOSR; |
| 801 | } |
| 802 | |
| 803 | return -EINPROGRESS; |
| 804 | } |
| 805 | |
| 806 | /* This function register usb device and initialize parameter. */ |
| 807 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) |
| 808 | { |
| 809 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 810 | |
| 811 | card->adapter = adapter; |
| 812 | adapter->dev = &card->udev->dev; |
| 813 | |
| 814 | switch (le16_to_cpu(card->udev->descriptor.idProduct)) { |
| 815 | case USB8897_PID_1: |
| 816 | case USB8897_PID_2: |
| 817 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; |
| 818 | strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME); |
| 819 | adapter->ext_scan = true; |
| 820 | break; |
| 821 | case USB8766_PID_1: |
| 822 | case USB8766_PID_2: |
| 823 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; |
| 824 | strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); |
| 825 | adapter->ext_scan = true; |
| 826 | break; |
| 827 | case USB8801_PID_1: |
| 828 | case USB8801_PID_2: |
| 829 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; |
| 830 | strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); |
| 831 | adapter->ext_scan = false; |
| 832 | break; |
| 833 | case USB8797_PID_1: |
| 834 | case USB8797_PID_2: |
| 835 | default: |
| 836 | adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; |
| 837 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); |
| 838 | break; |
| 839 | } |
| 840 | |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) |
| 845 | { |
| 846 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 847 | |
| 848 | card->adapter = NULL; |
| 849 | } |
| 850 | |
| 851 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, |
| 852 | struct mwifiex_fw_image *fw) |
| 853 | { |
| 854 | int ret = 0; |
| 855 | u8 *firmware = fw->fw_buf, *recv_buff; |
| 856 | u32 retries = USB8XXX_FW_MAX_RETRY, dlen; |
| 857 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; |
| 858 | struct fw_data *fwdata; |
| 859 | struct fw_sync_header sync_fw; |
| 860 | u8 check_winner = 1; |
| 861 | |
| 862 | if (!firmware) { |
| 863 | mwifiex_dbg(adapter, ERROR, |
| 864 | "No firmware image found! Terminating download\n"); |
| 865 | ret = -1; |
| 866 | goto fw_exit; |
| 867 | } |
| 868 | |
| 869 | /* Allocate memory for transmit */ |
| 870 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); |
| 871 | if (!fwdata) |
| 872 | goto fw_exit; |
| 873 | |
| 874 | /* Allocate memory for receive */ |
| 875 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); |
| 876 | if (!recv_buff) |
| 877 | goto cleanup; |
| 878 | |
| 879 | do { |
| 880 | /* Send pseudo data to check winner status first */ |
| 881 | if (check_winner) { |
| 882 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); |
| 883 | dlen = 0; |
| 884 | } else { |
| 885 | /* copy the header of the fw_data to get the length */ |
| 886 | memcpy(&fwdata->fw_hdr, &firmware[tlen], |
| 887 | sizeof(struct fw_header)); |
| 888 | |
| 889 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); |
| 890 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); |
| 891 | tlen += sizeof(struct fw_header); |
| 892 | |
| 893 | memcpy(fwdata->data, &firmware[tlen], dlen); |
| 894 | |
| 895 | fwdata->seq_num = cpu_to_le32(fw_seqnum); |
| 896 | tlen += dlen; |
| 897 | } |
| 898 | |
| 899 | /* If the send/receive fails or CRC occurs then retry */ |
| 900 | while (retries--) { |
| 901 | u8 *buf = (u8 *)fwdata; |
| 902 | u32 len = FW_DATA_XMIT_SIZE; |
| 903 | |
| 904 | /* send the firmware block */ |
| 905 | ret = mwifiex_write_data_sync(adapter, buf, &len, |
| 906 | MWIFIEX_USB_EP_CMD_EVENT, |
| 907 | MWIFIEX_USB_TIMEOUT); |
| 908 | if (ret) { |
| 909 | mwifiex_dbg(adapter, ERROR, |
| 910 | "write_data_sync: failed: %d\n", |
| 911 | ret); |
| 912 | continue; |
| 913 | } |
| 914 | |
| 915 | buf = recv_buff; |
| 916 | len = FW_DNLD_RX_BUF_SIZE; |
| 917 | |
| 918 | /* Receive the firmware block response */ |
| 919 | ret = mwifiex_read_data_sync(adapter, buf, &len, |
| 920 | MWIFIEX_USB_EP_CMD_EVENT, |
| 921 | MWIFIEX_USB_TIMEOUT); |
| 922 | if (ret) { |
| 923 | mwifiex_dbg(adapter, ERROR, |
| 924 | "read_data_sync: failed: %d\n", |
| 925 | ret); |
| 926 | continue; |
| 927 | } |
| 928 | |
| 929 | memcpy(&sync_fw, recv_buff, |
| 930 | sizeof(struct fw_sync_header)); |
| 931 | |
| 932 | /* check 1st firmware block resp for highest bit set */ |
| 933 | if (check_winner) { |
| 934 | if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { |
| 935 | mwifiex_dbg(adapter, WARN, |
| 936 | "USB is not the winner %#x\n", |
| 937 | sync_fw.cmd); |
| 938 | |
| 939 | /* returning success */ |
| 940 | ret = 0; |
| 941 | goto cleanup; |
| 942 | } |
| 943 | |
| 944 | mwifiex_dbg(adapter, MSG, |
| 945 | "start to download FW...\n"); |
| 946 | |
| 947 | check_winner = 0; |
| 948 | break; |
| 949 | } |
| 950 | |
| 951 | /* check the firmware block response for CRC errors */ |
| 952 | if (sync_fw.cmd) { |
| 953 | mwifiex_dbg(adapter, ERROR, |
| 954 | "FW received block with CRC %#x\n", |
| 955 | sync_fw.cmd); |
| 956 | ret = -1; |
| 957 | continue; |
| 958 | } |
| 959 | |
| 960 | retries = USB8XXX_FW_MAX_RETRY; |
| 961 | break; |
| 962 | } |
| 963 | fw_seqnum++; |
| 964 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); |
| 965 | |
| 966 | cleanup: |
| 967 | mwifiex_dbg(adapter, MSG, |
| 968 | "info: FW download over, size %d bytes\n", tlen); |
| 969 | |
| 970 | kfree(recv_buff); |
| 971 | kfree(fwdata); |
| 972 | |
| 973 | if (retries) |
| 974 | ret = 0; |
| 975 | fw_exit: |
| 976 | return ret; |
| 977 | } |
| 978 | |
| 979 | static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, |
| 980 | struct mwifiex_fw_image *fw) |
| 981 | { |
| 982 | int ret; |
| 983 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 984 | |
| 985 | if (card->usb_boot_state == USB8XXX_FW_DNLD) { |
| 986 | ret = mwifiex_prog_fw_w_helper(adapter, fw); |
| 987 | if (ret) |
| 988 | return -1; |
| 989 | |
| 990 | /* Boot state changes after successful firmware download */ |
| 991 | if (card->usb_boot_state == USB8XXX_FW_DNLD) |
| 992 | return -1; |
| 993 | } |
| 994 | |
| 995 | ret = mwifiex_usb_rx_init(adapter); |
| 996 | if (!ret) |
| 997 | ret = mwifiex_usb_tx_init(adapter); |
| 998 | |
| 999 | return ret; |
| 1000 | } |
| 1001 | |
| 1002 | static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) |
| 1003 | { |
| 1004 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 1005 | |
| 1006 | skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); |
| 1007 | if ((ep == card->rx_cmd_ep) && |
| 1008 | (!atomic_read(&card->rx_cmd_urb_pending))) |
| 1009 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, |
| 1010 | MWIFIEX_RX_CMD_BUF_SIZE); |
| 1011 | |
| 1012 | return; |
| 1013 | } |
| 1014 | |
| 1015 | static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, |
| 1016 | struct sk_buff *skb) |
| 1017 | { |
| 1018 | mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); |
| 1019 | |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | /* This function wakes up the card. */ |
| 1024 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) |
| 1025 | { |
| 1026 | /* Simulation of HS_AWAKE event */ |
| 1027 | adapter->pm_wakeup_fw_try = false; |
| 1028 | del_timer(&adapter->wakeup_timer); |
| 1029 | adapter->pm_wakeup_card_req = false; |
| 1030 | adapter->ps_state = PS_STATE_AWAKE; |
| 1031 | |
| 1032 | return 0; |
| 1033 | } |
| 1034 | |
| 1035 | static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) |
| 1036 | { |
| 1037 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 1038 | int i; |
| 1039 | struct urb_context *ctx; |
| 1040 | |
| 1041 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { |
| 1042 | if (card->rx_data_list[i].skb) |
| 1043 | continue; |
| 1044 | ctx = &card->rx_data_list[i]; |
| 1045 | mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | /* This function is called after the card has woken up. */ |
| 1050 | static inline int |
| 1051 | mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) |
| 1052 | { |
| 1053 | return 0; |
| 1054 | } |
| 1055 | |
| 1056 | static struct mwifiex_if_ops usb_ops = { |
| 1057 | .register_dev = mwifiex_register_dev, |
| 1058 | .unregister_dev = mwifiex_unregister_dev, |
| 1059 | .wakeup = mwifiex_pm_wakeup_card, |
| 1060 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, |
| 1061 | |
| 1062 | /* USB specific */ |
| 1063 | .dnld_fw = mwifiex_usb_dnld_fw, |
| 1064 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, |
| 1065 | .event_complete = mwifiex_usb_cmd_event_complete, |
| 1066 | .host_to_card = mwifiex_usb_host_to_card, |
| 1067 | .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, |
| 1068 | }; |
| 1069 | |
| 1070 | /* This function initializes the USB driver module. |
| 1071 | * |
| 1072 | * This initiates the semaphore and registers the device with |
| 1073 | * USB bus. |
| 1074 | */ |
| 1075 | static int mwifiex_usb_init_module(void) |
| 1076 | { |
| 1077 | int ret; |
| 1078 | |
| 1079 | pr_debug("Marvell USB8797 Driver\n"); |
| 1080 | |
| 1081 | sema_init(&add_remove_card_sem, 1); |
| 1082 | |
| 1083 | ret = usb_register(&mwifiex_usb_driver); |
| 1084 | if (ret) |
| 1085 | pr_err("Driver register failed!\n"); |
| 1086 | else |
| 1087 | pr_debug("info: Driver registered successfully!\n"); |
| 1088 | |
| 1089 | return ret; |
| 1090 | } |
| 1091 | |
| 1092 | /* This function cleans up the USB driver. |
| 1093 | * |
| 1094 | * The following major steps are followed in .disconnect for cleanup: |
| 1095 | * - Resume the device if its suspended |
| 1096 | * - Disconnect the device if connected |
| 1097 | * - Shutdown the firmware |
| 1098 | * - Unregister the device from USB bus. |
| 1099 | */ |
| 1100 | static void mwifiex_usb_cleanup_module(void) |
| 1101 | { |
| 1102 | if (!down_interruptible(&add_remove_card_sem)) |
| 1103 | up(&add_remove_card_sem); |
| 1104 | |
| 1105 | /* set the flag as user is removing this module */ |
| 1106 | user_rmmod = 1; |
| 1107 | |
| 1108 | usb_deregister(&mwifiex_usb_driver); |
| 1109 | } |
| 1110 | |
| 1111 | module_init(mwifiex_usb_init_module); |
| 1112 | module_exit(mwifiex_usb_cleanup_module); |
| 1113 | |
| 1114 | MODULE_AUTHOR("Marvell International Ltd."); |
| 1115 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); |
| 1116 | MODULE_VERSION(USB_VERSION); |
| 1117 | MODULE_LICENSE("GPL v2"); |
| 1118 | MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME); |
| 1119 | MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); |
| 1120 | MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); |
| 1121 | MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME); |