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 const 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_kill_urb(port->tx_data_list[j].urb); 367 usb_free_urb(port->tx_data_list[j].urb); 368 port->tx_data_list[j].urb = NULL; 369 } 370 } 371 372 usb_free_urb(card->tx_cmd.urb); 373 card->tx_cmd.urb = NULL; 374 375 return; 376 } 377 378 /* This function probes an mwifiex device and registers it. It allocates 379 * the card structure, initiates the device registration and initialization 380 * procedure by adding a logical interface. 381 */ 382 static int mwifiex_usb_probe(struct usb_interface *intf, 383 const struct usb_device_id *id) 384 { 385 struct usb_device *udev = interface_to_usbdev(intf); 386 struct usb_host_interface *iface_desc = intf->cur_altsetting; 387 struct usb_endpoint_descriptor *epd; 388 int ret, i; 389 struct usb_card_rec *card; 390 u16 id_vendor, id_product, bcd_device; 391 392 card = devm_kzalloc(&intf->dev, sizeof(*card), GFP_KERNEL); 393 if (!card) 394 return -ENOMEM; 395 396 init_completion(&card->fw_done); 397 398 id_vendor = le16_to_cpu(udev->descriptor.idVendor); 399 id_product = le16_to_cpu(udev->descriptor.idProduct); 400 bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); 401 pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", 402 id_vendor, id_product, bcd_device); 403 404 /* PID_1 is used for firmware downloading only */ 405 switch (id_product) { 406 case USB8766_PID_1: 407 case USB8797_PID_1: 408 case USB8801_PID_1: 409 case USB8997_PID_1: 410 card->usb_boot_state = USB8XXX_FW_DNLD; 411 break; 412 case USB8766_PID_2: 413 case USB8797_PID_2: 414 case USB8801_PID_2: 415 case USB8997_PID_2: 416 card->usb_boot_state = USB8XXX_FW_READY; 417 break; 418 default: 419 pr_warn("unknown id_product %#x\n", id_product); 420 card->usb_boot_state = USB8XXX_FW_DNLD; 421 break; 422 } 423 424 card->udev = udev; 425 card->intf = intf; 426 427 pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", 428 le16_to_cpu(udev->descriptor.bcdUSB), 429 udev->descriptor.bDeviceClass, 430 udev->descriptor.bDeviceSubClass, 431 udev->descriptor.bDeviceProtocol); 432 433 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 434 epd = &iface_desc->endpoint[i].desc; 435 if (usb_endpoint_dir_in(epd) && 436 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && 437 (usb_endpoint_xfer_bulk(epd) || 438 usb_endpoint_xfer_int(epd))) { 439 card->rx_cmd_ep_type = usb_endpoint_type(epd); 440 card->rx_cmd_interval = epd->bInterval; 441 pr_debug("info: Rx CMD/EVT:: max pkt size: %d, addr: %d, ep_type: %d\n", 442 le16_to_cpu(epd->wMaxPacketSize), 443 epd->bEndpointAddress, card->rx_cmd_ep_type); 444 card->rx_cmd_ep = usb_endpoint_num(epd); 445 atomic_set(&card->rx_cmd_urb_pending, 0); 446 } 447 if (usb_endpoint_dir_in(epd) && 448 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && 449 usb_endpoint_xfer_bulk(epd)) { 450 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", 451 le16_to_cpu(epd->wMaxPacketSize), 452 epd->bEndpointAddress); 453 card->rx_data_ep = usb_endpoint_num(epd); 454 atomic_set(&card->rx_data_urb_pending, 0); 455 } 456 if (usb_endpoint_dir_out(epd) && 457 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && 458 usb_endpoint_xfer_bulk(epd)) { 459 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", 460 le16_to_cpu(epd->wMaxPacketSize), 461 epd->bEndpointAddress); 462 card->port[0].tx_data_ep = usb_endpoint_num(epd); 463 atomic_set(&card->port[0].tx_data_urb_pending, 0); 464 } 465 if (usb_endpoint_dir_out(epd) && 466 usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA_CH2 && 467 usb_endpoint_xfer_bulk(epd)) { 468 pr_debug("info: bulk OUT chan2:\t" 469 "max pkt size: %d, addr: %d\n", 470 le16_to_cpu(epd->wMaxPacketSize), 471 epd->bEndpointAddress); 472 card->port[1].tx_data_ep = usb_endpoint_num(epd); 473 atomic_set(&card->port[1].tx_data_urb_pending, 0); 474 } 475 if (usb_endpoint_dir_out(epd) && 476 usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && 477 (usb_endpoint_xfer_bulk(epd) || 478 usb_endpoint_xfer_int(epd))) { 479 card->tx_cmd_ep_type = usb_endpoint_type(epd); 480 card->tx_cmd_interval = epd->bInterval; 481 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", 482 le16_to_cpu(epd->wMaxPacketSize), 483 epd->bEndpointAddress); 484 pr_debug("info: Tx CMD:: max pkt size: %d, addr: %d, ep_type: %d\n", 485 le16_to_cpu(epd->wMaxPacketSize), 486 epd->bEndpointAddress, card->tx_cmd_ep_type); 487 card->tx_cmd_ep = usb_endpoint_num(epd); 488 atomic_set(&card->tx_cmd_urb_pending, 0); 489 card->bulk_out_maxpktsize = 490 le16_to_cpu(epd->wMaxPacketSize); 491 } 492 } 493 494 usb_set_intfdata(intf, card); 495 496 ret = mwifiex_add_card(card, &card->fw_done, &usb_ops, 497 MWIFIEX_USB, &card->udev->dev); 498 if (ret) { 499 pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); 500 usb_reset_device(udev); 501 return ret; 502 } 503 504 usb_get_dev(udev); 505 506 return 0; 507 } 508 509 /* Kernel needs to suspend all functions separately. Therefore all 510 * registered functions must have drivers with suspend and resume 511 * methods. Failing that the kernel simply removes the whole card. 512 * 513 * If already not suspended, this function allocates and sends a 514 * 'host sleep activate' request to the firmware and turns off the traffic. 515 */ 516 static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) 517 { 518 struct usb_card_rec *card = usb_get_intfdata(intf); 519 struct mwifiex_adapter *adapter; 520 struct usb_tx_data_port *port; 521 int i, j; 522 523 /* Might still be loading firmware */ 524 wait_for_completion(&card->fw_done); 525 526 adapter = card->adapter; 527 if (!adapter) { 528 dev_err(&intf->dev, "card is not valid\n"); 529 return 0; 530 } 531 532 if (unlikely(adapter->is_suspended)) 533 mwifiex_dbg(adapter, WARN, 534 "Device already suspended\n"); 535 536 /* Enable the Host Sleep */ 537 if (!mwifiex_enable_hs(adapter)) { 538 mwifiex_dbg(adapter, ERROR, 539 "cmd: failed to suspend\n"); 540 adapter->hs_enabling = false; 541 return -EFAULT; 542 } 543 544 545 /* 'is_suspended' flag indicates device is suspended. 546 * It must be set here before the usb_kill_urb() calls. Reason 547 * is in the complete handlers, urb->status(= -ENOENT) and 548 * this flag is used in combination to distinguish between a 549 * 'suspended' state and a 'disconnect' one. 550 */ 551 adapter->is_suspended = true; 552 adapter->hs_enabling = false; 553 554 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) 555 usb_kill_urb(card->rx_cmd.urb); 556 557 if (atomic_read(&card->rx_data_urb_pending)) 558 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) 559 if (card->rx_data_list[i].urb) 560 usb_kill_urb(card->rx_data_list[i].urb); 561 562 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 563 port = &card->port[i]; 564 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { 565 if (port->tx_data_list[j].urb) 566 usb_kill_urb(port->tx_data_list[j].urb); 567 } 568 } 569 570 if (card->tx_cmd.urb) 571 usb_kill_urb(card->tx_cmd.urb); 572 573 return 0; 574 } 575 576 /* Kernel needs to suspend all functions separately. Therefore all 577 * registered functions must have drivers with suspend and resume 578 * methods. Failing that the kernel simply removes the whole card. 579 * 580 * If already not resumed, this function turns on the traffic and 581 * sends a 'host sleep cancel' request to the firmware. 582 */ 583 static int mwifiex_usb_resume(struct usb_interface *intf) 584 { 585 struct usb_card_rec *card = usb_get_intfdata(intf); 586 struct mwifiex_adapter *adapter; 587 int i; 588 589 if (!card->adapter) { 590 dev_err(&intf->dev, "%s: card->adapter is NULL\n", 591 __func__); 592 return 0; 593 } 594 adapter = card->adapter; 595 596 if (unlikely(!adapter->is_suspended)) { 597 mwifiex_dbg(adapter, WARN, 598 "Device already resumed\n"); 599 return 0; 600 } 601 602 /* Indicate device resumed. The netdev queue will be resumed only 603 * after the urbs have been re-submitted 604 */ 605 adapter->is_suspended = false; 606 607 if (!atomic_read(&card->rx_data_urb_pending)) 608 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) 609 mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], 610 MWIFIEX_RX_DATA_BUF_SIZE); 611 612 if (!atomic_read(&card->rx_cmd_urb_pending)) { 613 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); 614 if (card->rx_cmd.skb) 615 mwifiex_usb_submit_rx_urb(&card->rx_cmd, 616 MWIFIEX_RX_CMD_BUF_SIZE); 617 } 618 619 /* Disable Host Sleep */ 620 if (adapter->hs_activated) 621 mwifiex_cancel_hs(mwifiex_get_priv(adapter, 622 MWIFIEX_BSS_ROLE_ANY), 623 MWIFIEX_ASYNC_CMD); 624 625 return 0; 626 } 627 628 static void mwifiex_usb_disconnect(struct usb_interface *intf) 629 { 630 struct usb_card_rec *card = usb_get_intfdata(intf); 631 struct mwifiex_adapter *adapter; 632 633 wait_for_completion(&card->fw_done); 634 635 adapter = card->adapter; 636 if (!adapter || !adapter->priv_num) 637 return; 638 639 if (card->udev->state != USB_STATE_NOTATTACHED && !adapter->mfg_mode) { 640 mwifiex_deauthenticate_all(adapter); 641 642 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, 643 MWIFIEX_BSS_ROLE_ANY), 644 MWIFIEX_FUNC_SHUTDOWN); 645 } 646 647 if (adapter->workqueue) 648 flush_workqueue(adapter->workqueue); 649 650 mwifiex_usb_free(card); 651 652 mwifiex_dbg(adapter, FATAL, 653 "%s: removing card\n", __func__); 654 mwifiex_remove_card(adapter); 655 656 usb_put_dev(interface_to_usbdev(intf)); 657 } 658 659 static void mwifiex_usb_coredump(struct device *dev) 660 { 661 struct usb_interface *intf = to_usb_interface(dev); 662 struct usb_card_rec *card = usb_get_intfdata(intf); 663 664 mwifiex_fw_dump_event(mwifiex_get_priv(card->adapter, 665 MWIFIEX_BSS_ROLE_ANY)); 666 } 667 668 static struct usb_driver mwifiex_usb_driver = { 669 .name = "mwifiex_usb", 670 .probe = mwifiex_usb_probe, 671 .disconnect = mwifiex_usb_disconnect, 672 .id_table = mwifiex_usb_table, 673 .suspend = mwifiex_usb_suspend, 674 .resume = mwifiex_usb_resume, 675 .soft_unbind = 1, 676 .drvwrap.driver = { 677 .coredump = mwifiex_usb_coredump, 678 }, 679 }; 680 681 static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 682 u32 *len, u8 ep, u32 timeout) 683 { 684 struct usb_card_rec *card = adapter->card; 685 int actual_length, ret; 686 687 if (!(*len % card->bulk_out_maxpktsize)) 688 (*len)++; 689 690 /* Send the data block */ 691 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, 692 *len, &actual_length, timeout); 693 if (ret) { 694 mwifiex_dbg(adapter, ERROR, 695 "usb_bulk_msg for tx failed: %d\n", ret); 696 return ret; 697 } 698 699 *len = actual_length; 700 701 return ret; 702 } 703 704 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 705 u32 *len, u8 ep, u32 timeout) 706 { 707 struct usb_card_rec *card = adapter->card; 708 int actual_length, ret; 709 710 /* Receive the data response */ 711 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, 712 *len, &actual_length, timeout); 713 if (ret) { 714 mwifiex_dbg(adapter, ERROR, 715 "usb_bulk_msg for rx failed: %d\n", ret); 716 return ret; 717 } 718 719 *len = actual_length; 720 721 return ret; 722 } 723 724 static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) 725 { 726 struct usb_card_rec *card = adapter->card; 727 u8 active_port = MWIFIEX_USB_EP_DATA; 728 struct mwifiex_private *priv = NULL; 729 int i; 730 731 if (adapter->usb_mc_status) { 732 for (i = 0; i < adapter->priv_num; i++) { 733 priv = adapter->priv[i]; 734 if (!priv) 735 continue; 736 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 737 !priv->bss_started) || 738 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 739 !priv->media_connected)) 740 priv->usb_port = MWIFIEX_USB_EP_DATA; 741 } 742 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 743 card->port[i].block_status = false; 744 } else { 745 for (i = 0; i < adapter->priv_num; i++) { 746 priv = adapter->priv[i]; 747 if (!priv) 748 continue; 749 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 750 priv->bss_started) || 751 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 752 priv->media_connected)) { 753 active_port = priv->usb_port; 754 break; 755 } 756 } 757 for (i = 0; i < adapter->priv_num; i++) { 758 priv = adapter->priv[i]; 759 if (priv) 760 priv->usb_port = active_port; 761 } 762 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 763 if (active_port == card->port[i].tx_data_ep) 764 card->port[i].block_status = false; 765 else 766 card->port[i].block_status = true; 767 } 768 } 769 } 770 771 static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv) 772 { 773 struct usb_card_rec *card = priv->adapter->card; 774 int idx; 775 776 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 777 if (priv->usb_port == card->port[idx].tx_data_ep) 778 return !card->port[idx].block_status; 779 } 780 781 return false; 782 } 783 784 static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter) 785 { 786 struct usb_card_rec *card = adapter->card; 787 int i; 788 789 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 790 if (!card->port[i].block_status) 791 return false; 792 793 return true; 794 } 795 796 static int mwifiex_usb_construct_send_urb(struct mwifiex_adapter *adapter, 797 struct usb_tx_data_port *port, u8 ep, 798 struct urb_context *context, 799 struct sk_buff *skb_send) 800 { 801 struct usb_card_rec *card = adapter->card; 802 int ret = -EINPROGRESS; 803 struct urb *tx_urb; 804 805 context->adapter = adapter; 806 context->ep = ep; 807 context->skb = skb_send; 808 tx_urb = context->urb; 809 810 if (ep == card->tx_cmd_ep && 811 card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT) 812 usb_fill_int_urb(tx_urb, card->udev, 813 usb_sndintpipe(card->udev, ep), skb_send->data, 814 skb_send->len, mwifiex_usb_tx_complete, 815 (void *)context, card->tx_cmd_interval); 816 else 817 usb_fill_bulk_urb(tx_urb, card->udev, 818 usb_sndbulkpipe(card->udev, ep), 819 skb_send->data, skb_send->len, 820 mwifiex_usb_tx_complete, (void *)context); 821 822 tx_urb->transfer_flags |= URB_ZERO_PACKET; 823 824 if (ep == card->tx_cmd_ep) 825 atomic_inc(&card->tx_cmd_urb_pending); 826 else 827 atomic_inc(&port->tx_data_urb_pending); 828 829 if (ep != card->tx_cmd_ep && 830 atomic_read(&port->tx_data_urb_pending) == 831 MWIFIEX_TX_DATA_URB) { 832 port->block_status = true; 833 adapter->data_sent = mwifiex_usb_data_sent(adapter); 834 ret = -ENOSR; 835 } 836 837 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { 838 mwifiex_dbg(adapter, ERROR, 839 "%s: usb_submit_urb failed\n", __func__); 840 if (ep == card->tx_cmd_ep) { 841 atomic_dec(&card->tx_cmd_urb_pending); 842 } else { 843 atomic_dec(&port->tx_data_urb_pending); 844 port->block_status = false; 845 adapter->data_sent = false; 846 if (port->tx_data_ix) 847 port->tx_data_ix--; 848 else 849 port->tx_data_ix = MWIFIEX_TX_DATA_URB; 850 } 851 ret = -1; 852 } 853 854 return ret; 855 } 856 857 static int mwifiex_usb_prepare_tx_aggr_skb(struct mwifiex_adapter *adapter, 858 struct usb_tx_data_port *port, 859 struct sk_buff **skb_send) 860 { 861 struct sk_buff *skb_aggr, *skb_tmp; 862 u8 *payload, pad; 863 u16 align = adapter->bus_aggr.tx_aggr_align; 864 struct mwifiex_txinfo *tx_info = NULL; 865 bool is_txinfo_set = false; 866 867 /* Packets in aggr_list will be send in either skb_aggr or 868 * write complete, delete the tx_aggr timer 869 */ 870 if (port->tx_aggr.timer_cnxt.is_hold_timer_set) { 871 del_timer(&port->tx_aggr.timer_cnxt.hold_timer); 872 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 873 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 874 } 875 876 skb_aggr = mwifiex_alloc_dma_align_buf(port->tx_aggr.aggr_len, 877 GFP_ATOMIC); 878 if (!skb_aggr) { 879 mwifiex_dbg(adapter, ERROR, 880 "%s: alloc skb_aggr failed\n", __func__); 881 882 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) 883 mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); 884 885 port->tx_aggr.aggr_num = 0; 886 port->tx_aggr.aggr_len = 0; 887 return -EBUSY; 888 } 889 890 tx_info = MWIFIEX_SKB_TXCB(skb_aggr); 891 memset(tx_info, 0, sizeof(*tx_info)); 892 893 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) { 894 /* padding for aligning next packet header*/ 895 pad = (align - (skb_tmp->len & (align - 1))) % align; 896 payload = skb_put(skb_aggr, skb_tmp->len + pad); 897 memcpy(payload, skb_tmp->data, skb_tmp->len); 898 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 899 /* do not padding for last packet*/ 900 *(u16 *)payload = cpu_to_le16(skb_tmp->len); 901 *(u16 *)&payload[2] = 902 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 903 skb_trim(skb_aggr, skb_aggr->len - pad); 904 } else { 905 /* add aggregation interface header */ 906 *(u16 *)payload = cpu_to_le16(skb_tmp->len + pad); 907 *(u16 *)&payload[2] = 908 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2); 909 } 910 911 if (!is_txinfo_set) { 912 tx_info->bss_num = MWIFIEX_SKB_TXCB(skb_tmp)->bss_num; 913 tx_info->bss_type = MWIFIEX_SKB_TXCB(skb_tmp)->bss_type; 914 is_txinfo_set = true; 915 } 916 917 port->tx_aggr.aggr_num--; 918 port->tx_aggr.aggr_len -= (skb_tmp->len + pad); 919 mwifiex_write_data_complete(adapter, skb_tmp, 0, 0); 920 } 921 922 tx_info->pkt_len = skb_aggr->len - 923 (sizeof(struct txpd) + adapter->intf_hdr_len); 924 tx_info->flags |= MWIFIEX_BUF_FLAG_AGGR_PKT; 925 926 port->tx_aggr.aggr_num = 0; 927 port->tx_aggr.aggr_len = 0; 928 *skb_send = skb_aggr; 929 930 return 0; 931 } 932 933 /* This function prepare data packet to be send under usb tx aggregation 934 * protocol, check current usb aggregation status, link packet to aggrgation 935 * list if possible, work flow as below: 936 * (1) if only 1 packet available, add usb tx aggregation header and send. 937 * (2) if packet is able to aggregated, link it to current aggregation list. 938 * (3) if packet is not able to aggregated, aggregate and send exist packets 939 * in aggrgation list. Then, link packet in the list if there is more 940 * packet in transmit queue, otherwise try to transmit single packet. 941 */ 942 static int mwifiex_usb_aggr_tx_data(struct mwifiex_adapter *adapter, u8 ep, 943 struct sk_buff *skb, 944 struct mwifiex_tx_param *tx_param, 945 struct usb_tx_data_port *port) 946 { 947 u8 *payload, pad; 948 u16 align = adapter->bus_aggr.tx_aggr_align; 949 struct sk_buff *skb_send = NULL; 950 struct urb_context *context = NULL; 951 struct txpd *local_tx_pd = 952 (struct txpd *)((u8 *)skb->data + adapter->intf_hdr_len); 953 u8 f_send_aggr_buf = 0; 954 u8 f_send_cur_buf = 0; 955 u8 f_precopy_cur_buf = 0; 956 u8 f_postcopy_cur_buf = 0; 957 u32 timeout; 958 int ret; 959 960 /* padding to ensure each packet alginment */ 961 pad = (align - (skb->len & (align - 1))) % align; 962 963 if (tx_param && tx_param->next_pkt_len) { 964 /* next packet available in tx queue*/ 965 if (port->tx_aggr.aggr_len + skb->len + pad > 966 adapter->bus_aggr.tx_aggr_max_size) { 967 f_send_aggr_buf = 1; 968 f_postcopy_cur_buf = 1; 969 } else { 970 /* current packet could be aggregated*/ 971 f_precopy_cur_buf = 1; 972 973 if (port->tx_aggr.aggr_len + skb->len + pad + 974 tx_param->next_pkt_len > 975 adapter->bus_aggr.tx_aggr_max_size || 976 port->tx_aggr.aggr_num + 2 > 977 adapter->bus_aggr.tx_aggr_max_num) { 978 /* next packet could not be aggregated 979 * send current aggregation buffer 980 */ 981 f_send_aggr_buf = 1; 982 } 983 } 984 } else { 985 /* last packet in tx queue */ 986 if (port->tx_aggr.aggr_num > 0) { 987 /* pending packets in aggregation buffer*/ 988 if (port->tx_aggr.aggr_len + skb->len + pad > 989 adapter->bus_aggr.tx_aggr_max_size) { 990 /* current packet not be able to aggregated, 991 * send aggr buffer first, then send packet. 992 */ 993 f_send_cur_buf = 1; 994 } else { 995 /* last packet, Aggregation and send */ 996 f_precopy_cur_buf = 1; 997 } 998 999 f_send_aggr_buf = 1; 1000 } else { 1001 /* no pending packets in aggregation buffer, 1002 * send current packet immediately 1003 */ 1004 f_send_cur_buf = 1; 1005 } 1006 } 1007 1008 if (local_tx_pd->flags & MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET) { 1009 /* Send NULL packet immediately*/ 1010 if (f_precopy_cur_buf) { 1011 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 1012 f_precopy_cur_buf = 0; 1013 f_send_aggr_buf = 0; 1014 f_send_cur_buf = 1; 1015 } else { 1016 f_send_aggr_buf = 1; 1017 } 1018 } else if (f_postcopy_cur_buf) { 1019 f_send_cur_buf = 1; 1020 f_postcopy_cur_buf = 0; 1021 } 1022 } 1023 1024 if (f_precopy_cur_buf) { 1025 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1026 port->tx_aggr.aggr_len += (skb->len + pad); 1027 port->tx_aggr.aggr_num++; 1028 if (f_send_aggr_buf) 1029 goto send_aggr_buf; 1030 1031 /* packet will not been send immediately, 1032 * set a timer to make sure it will be sent under 1033 * strict time limit. Dynamically fit the timeout 1034 * value, according to packets number in aggr_list 1035 */ 1036 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1037 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1038 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1039 timeout = 1040 port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1041 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1042 jiffies + msecs_to_jiffies(timeout)); 1043 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1044 } else { 1045 if (port->tx_aggr.timer_cnxt.hold_tmo_msecs < 1046 MWIFIEX_USB_TX_AGGR_TMO_MAX) { 1047 /* Dyanmic fit timeout */ 1048 timeout = 1049 ++port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1050 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1051 jiffies + msecs_to_jiffies(timeout)); 1052 } 1053 } 1054 } 1055 1056 send_aggr_buf: 1057 if (f_send_aggr_buf) { 1058 ret = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1059 if (!ret) { 1060 context = &port->tx_data_list[port->tx_data_ix++]; 1061 ret = mwifiex_usb_construct_send_urb(adapter, port, ep, 1062 context, skb_send); 1063 if (ret == -1) 1064 mwifiex_write_data_complete(adapter, skb_send, 1065 0, -1); 1066 } 1067 } 1068 1069 if (f_send_cur_buf) { 1070 if (f_send_aggr_buf) { 1071 if (atomic_read(&port->tx_data_urb_pending) >= 1072 MWIFIEX_TX_DATA_URB) { 1073 port->block_status = true; 1074 adapter->data_sent = 1075 mwifiex_usb_data_sent(adapter); 1076 /* no available urb, postcopy packet*/ 1077 f_postcopy_cur_buf = 1; 1078 goto postcopy_cur_buf; 1079 } 1080 1081 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1082 port->tx_data_ix = 0; 1083 } 1084 1085 payload = skb->data; 1086 *(u16 *)&payload[2] = 1087 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 1088 *(u16 *)payload = cpu_to_le16(skb->len); 1089 skb_send = skb; 1090 context = &port->tx_data_list[port->tx_data_ix++]; 1091 return mwifiex_usb_construct_send_urb(adapter, port, ep, 1092 context, skb_send); 1093 } 1094 1095 postcopy_cur_buf: 1096 if (f_postcopy_cur_buf) { 1097 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1098 port->tx_aggr.aggr_len += (skb->len + pad); 1099 port->tx_aggr.aggr_num++; 1100 /* New aggregation begin, start timer */ 1101 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1102 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1103 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1104 timeout = port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1105 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1106 jiffies + msecs_to_jiffies(timeout)); 1107 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1108 } 1109 } 1110 1111 return -EINPROGRESS; 1112 } 1113 1114 static void mwifiex_usb_tx_aggr_tmo(struct timer_list *t) 1115 { 1116 struct urb_context *urb_cnxt = NULL; 1117 struct sk_buff *skb_send = NULL; 1118 struct tx_aggr_tmr_cnxt *timer_context = 1119 from_timer(timer_context, t, hold_timer); 1120 struct mwifiex_adapter *adapter = timer_context->adapter; 1121 struct usb_tx_data_port *port = timer_context->port; 1122 unsigned long flags; 1123 int err = 0; 1124 1125 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1126 err = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1127 if (err) { 1128 mwifiex_dbg(adapter, ERROR, 1129 "prepare tx aggr skb failed, err=%d\n", err); 1130 goto unlock; 1131 } 1132 1133 if (atomic_read(&port->tx_data_urb_pending) >= 1134 MWIFIEX_TX_DATA_URB) { 1135 port->block_status = true; 1136 adapter->data_sent = 1137 mwifiex_usb_data_sent(adapter); 1138 err = -1; 1139 goto done; 1140 } 1141 1142 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1143 port->tx_data_ix = 0; 1144 1145 urb_cnxt = &port->tx_data_list[port->tx_data_ix++]; 1146 err = mwifiex_usb_construct_send_urb(adapter, port, port->tx_data_ep, 1147 urb_cnxt, skb_send); 1148 done: 1149 if (err == -1) 1150 mwifiex_write_data_complete(adapter, skb_send, 0, -1); 1151 unlock: 1152 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1153 } 1154 1155 /* This function write a command/data packet to card. */ 1156 static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, 1157 struct sk_buff *skb, 1158 struct mwifiex_tx_param *tx_param) 1159 { 1160 struct usb_card_rec *card = adapter->card; 1161 struct urb_context *context = NULL; 1162 struct usb_tx_data_port *port = NULL; 1163 unsigned long flags; 1164 int idx, ret; 1165 1166 if (adapter->is_suspended) { 1167 mwifiex_dbg(adapter, ERROR, 1168 "%s: not allowed while suspended\n", __func__); 1169 return -1; 1170 } 1171 1172 if (adapter->surprise_removed) { 1173 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); 1174 return -1; 1175 } 1176 1177 mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); 1178 1179 if (ep == card->tx_cmd_ep) { 1180 context = &card->tx_cmd; 1181 } else { 1182 /* get the data port structure for endpoint */ 1183 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1184 if (ep == card->port[idx].tx_data_ep) { 1185 port = &card->port[idx]; 1186 if (atomic_read(&port->tx_data_urb_pending) 1187 >= MWIFIEX_TX_DATA_URB) { 1188 port->block_status = true; 1189 adapter->data_sent = 1190 mwifiex_usb_data_sent(adapter); 1191 return -EBUSY; 1192 } 1193 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1194 port->tx_data_ix = 0; 1195 break; 1196 } 1197 } 1198 1199 if (!port) { 1200 mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n"); 1201 return -1; 1202 } 1203 1204 if (adapter->bus_aggr.enable) { 1205 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1206 ret = mwifiex_usb_aggr_tx_data(adapter, ep, skb, 1207 tx_param, port); 1208 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1209 return ret; 1210 } 1211 1212 context = &port->tx_data_list[port->tx_data_ix++]; 1213 } 1214 1215 return mwifiex_usb_construct_send_urb(adapter, port, ep, context, skb); 1216 } 1217 1218 static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) 1219 { 1220 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1221 struct usb_tx_data_port *port; 1222 int i, j; 1223 1224 card->tx_cmd.adapter = adapter; 1225 card->tx_cmd.ep = card->tx_cmd_ep; 1226 1227 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1228 if (!card->tx_cmd.urb) 1229 return -ENOMEM; 1230 1231 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 1232 port = &card->port[i]; 1233 if (!port->tx_data_ep) 1234 continue; 1235 port->tx_data_ix = 0; 1236 skb_queue_head_init(&port->tx_aggr.aggr_list); 1237 if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) 1238 port->block_status = false; 1239 else 1240 port->block_status = true; 1241 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { 1242 port->tx_data_list[j].adapter = adapter; 1243 port->tx_data_list[j].ep = port->tx_data_ep; 1244 port->tx_data_list[j].urb = 1245 usb_alloc_urb(0, GFP_KERNEL); 1246 if (!port->tx_data_list[j].urb) 1247 return -ENOMEM; 1248 } 1249 1250 port->tx_aggr.timer_cnxt.adapter = adapter; 1251 port->tx_aggr.timer_cnxt.port = port; 1252 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1253 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1254 timer_setup(&port->tx_aggr.timer_cnxt.hold_timer, 1255 mwifiex_usb_tx_aggr_tmo, 0); 1256 } 1257 1258 return 0; 1259 } 1260 1261 static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) 1262 { 1263 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1264 int i; 1265 1266 card->rx_cmd.adapter = adapter; 1267 card->rx_cmd.ep = card->rx_cmd_ep; 1268 1269 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1270 if (!card->rx_cmd.urb) 1271 return -ENOMEM; 1272 1273 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); 1274 if (!card->rx_cmd.skb) 1275 return -ENOMEM; 1276 1277 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) 1278 return -1; 1279 1280 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1281 card->rx_data_list[i].adapter = adapter; 1282 card->rx_data_list[i].ep = card->rx_data_ep; 1283 1284 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); 1285 if (!card->rx_data_list[i].urb) 1286 return -1; 1287 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], 1288 MWIFIEX_RX_DATA_BUF_SIZE)) 1289 return -1; 1290 } 1291 1292 return 0; 1293 } 1294 1295 /* This function register usb device and initialize parameter. */ 1296 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 1297 { 1298 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1299 1300 card->adapter = adapter; 1301 1302 switch (le16_to_cpu(card->udev->descriptor.idProduct)) { 1303 case USB8997_PID_1: 1304 case USB8997_PID_2: 1305 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; 1306 strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME); 1307 adapter->ext_scan = true; 1308 break; 1309 case USB8766_PID_1: 1310 case USB8766_PID_2: 1311 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1312 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); 1313 adapter->ext_scan = true; 1314 break; 1315 case USB8801_PID_1: 1316 case USB8801_PID_2: 1317 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1318 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); 1319 adapter->ext_scan = false; 1320 break; 1321 case USB8797_PID_1: 1322 case USB8797_PID_2: 1323 default: 1324 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1325 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); 1326 break; 1327 } 1328 1329 adapter->usb_mc_status = false; 1330 adapter->usb_mc_setup = false; 1331 1332 return 0; 1333 } 1334 1335 static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) 1336 { 1337 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1338 struct usb_tx_data_port *port; 1339 struct sk_buff *skb_tmp; 1340 int idx; 1341 1342 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1343 port = &card->port[idx]; 1344 if (adapter->bus_aggr.enable) 1345 while ((skb_tmp = 1346 skb_dequeue(&port->tx_aggr.aggr_list))) 1347 mwifiex_write_data_complete(adapter, skb_tmp, 1348 0, -1); 1349 del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); 1350 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1351 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1352 } 1353 } 1354 1355 static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 1356 { 1357 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1358 1359 mwifiex_usb_cleanup_tx_aggr(adapter); 1360 1361 card->adapter = NULL; 1362 } 1363 1364 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 1365 struct mwifiex_fw_image *fw) 1366 { 1367 int ret = 0; 1368 u8 *firmware = fw->fw_buf, *recv_buff; 1369 u32 retries = USB8XXX_FW_MAX_RETRY + 1; 1370 u32 dlen; 1371 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; 1372 struct fw_data *fwdata; 1373 struct fw_sync_header sync_fw; 1374 u8 check_winner = 1; 1375 1376 if (!firmware) { 1377 mwifiex_dbg(adapter, ERROR, 1378 "No firmware image found! Terminating download\n"); 1379 ret = -1; 1380 goto fw_exit; 1381 } 1382 1383 /* Allocate memory for transmit */ 1384 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); 1385 if (!fwdata) { 1386 ret = -ENOMEM; 1387 goto fw_exit; 1388 } 1389 1390 /* Allocate memory for receive */ 1391 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); 1392 if (!recv_buff) { 1393 ret = -ENOMEM; 1394 goto cleanup; 1395 } 1396 1397 do { 1398 /* Send pseudo data to check winner status first */ 1399 if (check_winner) { 1400 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); 1401 dlen = 0; 1402 } else { 1403 /* copy the header of the fw_data to get the length */ 1404 memcpy(&fwdata->fw_hdr, &firmware[tlen], 1405 sizeof(struct fw_header)); 1406 1407 dlen = le32_to_cpu(fwdata->fw_hdr.data_len); 1408 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); 1409 tlen += sizeof(struct fw_header); 1410 1411 /* Command 7 doesn't have data length field */ 1412 if (dnld_cmd == FW_CMD_7) 1413 dlen = 0; 1414 1415 memcpy(fwdata->data, &firmware[tlen], dlen); 1416 1417 fwdata->seq_num = cpu_to_le32(fw_seqnum); 1418 tlen += dlen; 1419 } 1420 1421 /* If the send/receive fails or CRC occurs then retry */ 1422 while (--retries) { 1423 u8 *buf = (u8 *)fwdata; 1424 u32 len = FW_DATA_XMIT_SIZE; 1425 1426 /* send the firmware block */ 1427 ret = mwifiex_write_data_sync(adapter, buf, &len, 1428 MWIFIEX_USB_EP_CMD_EVENT, 1429 MWIFIEX_USB_TIMEOUT); 1430 if (ret) { 1431 mwifiex_dbg(adapter, ERROR, 1432 "write_data_sync: failed: %d\n", 1433 ret); 1434 continue; 1435 } 1436 1437 buf = recv_buff; 1438 len = FW_DNLD_RX_BUF_SIZE; 1439 1440 /* Receive the firmware block response */ 1441 ret = mwifiex_read_data_sync(adapter, buf, &len, 1442 MWIFIEX_USB_EP_CMD_EVENT, 1443 MWIFIEX_USB_TIMEOUT); 1444 if (ret) { 1445 mwifiex_dbg(adapter, ERROR, 1446 "read_data_sync: failed: %d\n", 1447 ret); 1448 continue; 1449 } 1450 1451 memcpy(&sync_fw, recv_buff, 1452 sizeof(struct fw_sync_header)); 1453 1454 /* check 1st firmware block resp for highest bit set */ 1455 if (check_winner) { 1456 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { 1457 mwifiex_dbg(adapter, WARN, 1458 "USB is not the winner %#x\n", 1459 sync_fw.cmd); 1460 1461 /* returning success */ 1462 ret = 0; 1463 goto cleanup; 1464 } 1465 1466 mwifiex_dbg(adapter, MSG, 1467 "start to download FW...\n"); 1468 1469 check_winner = 0; 1470 break; 1471 } 1472 1473 /* check the firmware block response for CRC errors */ 1474 if (sync_fw.cmd) { 1475 mwifiex_dbg(adapter, ERROR, 1476 "FW received block with CRC %#x\n", 1477 sync_fw.cmd); 1478 ret = -1; 1479 continue; 1480 } 1481 1482 retries = USB8XXX_FW_MAX_RETRY + 1; 1483 break; 1484 } 1485 fw_seqnum++; 1486 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); 1487 1488 cleanup: 1489 mwifiex_dbg(adapter, MSG, 1490 "info: FW download over, size %d bytes\n", tlen); 1491 1492 kfree(recv_buff); 1493 kfree(fwdata); 1494 1495 if (retries) 1496 ret = 0; 1497 fw_exit: 1498 return ret; 1499 } 1500 1501 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, 1502 struct mwifiex_fw_image *fw) 1503 { 1504 int ret; 1505 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1506 1507 if (card->usb_boot_state == USB8XXX_FW_DNLD) { 1508 ret = mwifiex_prog_fw_w_helper(adapter, fw); 1509 if (ret) 1510 return -1; 1511 1512 /* Boot state changes after successful firmware download */ 1513 if (card->usb_boot_state == USB8XXX_FW_DNLD) 1514 return -1; 1515 } 1516 1517 ret = mwifiex_usb_rx_init(adapter); 1518 if (!ret) 1519 ret = mwifiex_usb_tx_init(adapter); 1520 1521 return ret; 1522 } 1523 1524 static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) 1525 { 1526 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1527 1528 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); 1529 if ((ep == card->rx_cmd_ep) && 1530 (!atomic_read(&card->rx_cmd_urb_pending))) 1531 mwifiex_usb_submit_rx_urb(&card->rx_cmd, 1532 MWIFIEX_RX_CMD_BUF_SIZE); 1533 1534 return; 1535 } 1536 1537 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, 1538 struct sk_buff *skb) 1539 { 1540 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); 1541 1542 return 0; 1543 } 1544 1545 /* This function wakes up the card. */ 1546 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 1547 { 1548 /* Simulation of HS_AWAKE event */ 1549 adapter->pm_wakeup_fw_try = false; 1550 del_timer(&adapter->wakeup_timer); 1551 adapter->pm_wakeup_card_req = false; 1552 adapter->ps_state = PS_STATE_AWAKE; 1553 1554 return 0; 1555 } 1556 1557 static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) 1558 { 1559 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1560 int i; 1561 struct urb_context *ctx; 1562 1563 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1564 if (card->rx_data_list[i].skb) 1565 continue; 1566 ctx = &card->rx_data_list[i]; 1567 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); 1568 } 1569 } 1570 1571 /* This function is called after the card has woken up. */ 1572 static inline int 1573 mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 1574 { 1575 return 0; 1576 } 1577 1578 static struct mwifiex_if_ops usb_ops = { 1579 .register_dev = mwifiex_register_dev, 1580 .unregister_dev = mwifiex_unregister_dev, 1581 .wakeup = mwifiex_pm_wakeup_card, 1582 .wakeup_complete = mwifiex_pm_wakeup_card_complete, 1583 1584 /* USB specific */ 1585 .dnld_fw = mwifiex_usb_dnld_fw, 1586 .cmdrsp_complete = mwifiex_usb_cmd_event_complete, 1587 .event_complete = mwifiex_usb_cmd_event_complete, 1588 .host_to_card = mwifiex_usb_host_to_card, 1589 .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, 1590 .multi_port_resync = mwifiex_usb_port_resync, 1591 .is_port_ready = mwifiex_usb_is_port_ready, 1592 }; 1593 1594 module_usb_driver(mwifiex_usb_driver); 1595 1596 MODULE_AUTHOR("Marvell International Ltd."); 1597 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); 1598 MODULE_VERSION(USB_VERSION); 1599 MODULE_LICENSE("GPL v2"); 1600 MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME); 1601 MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); 1602 MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); 1603 MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME); 1604