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 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 void mwifiex_usb_coredump(struct device *dev) 655 { 656 struct usb_interface *intf = to_usb_interface(dev); 657 struct usb_card_rec *card = usb_get_intfdata(intf); 658 659 mwifiex_fw_dump_event(mwifiex_get_priv(card->adapter, 660 MWIFIEX_BSS_ROLE_ANY)); 661 } 662 663 static struct usb_driver mwifiex_usb_driver = { 664 .name = "mwifiex_usb", 665 .probe = mwifiex_usb_probe, 666 .disconnect = mwifiex_usb_disconnect, 667 .id_table = mwifiex_usb_table, 668 .suspend = mwifiex_usb_suspend, 669 .resume = mwifiex_usb_resume, 670 .soft_unbind = 1, 671 .drvwrap.driver = { 672 .coredump = mwifiex_usb_coredump, 673 }, 674 }; 675 676 static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 677 u32 *len, u8 ep, u32 timeout) 678 { 679 struct usb_card_rec *card = adapter->card; 680 int actual_length, ret; 681 682 if (!(*len % card->bulk_out_maxpktsize)) 683 (*len)++; 684 685 /* Send the data block */ 686 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, 687 *len, &actual_length, timeout); 688 if (ret) { 689 mwifiex_dbg(adapter, ERROR, 690 "usb_bulk_msg for tx failed: %d\n", ret); 691 return ret; 692 } 693 694 *len = actual_length; 695 696 return ret; 697 } 698 699 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 700 u32 *len, u8 ep, u32 timeout) 701 { 702 struct usb_card_rec *card = adapter->card; 703 int actual_length, ret; 704 705 /* Receive the data response */ 706 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, 707 *len, &actual_length, timeout); 708 if (ret) { 709 mwifiex_dbg(adapter, ERROR, 710 "usb_bulk_msg for rx failed: %d\n", ret); 711 return ret; 712 } 713 714 *len = actual_length; 715 716 return ret; 717 } 718 719 static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) 720 { 721 struct usb_card_rec *card = adapter->card; 722 u8 active_port = MWIFIEX_USB_EP_DATA; 723 struct mwifiex_private *priv = NULL; 724 int i; 725 726 if (adapter->usb_mc_status) { 727 for (i = 0; i < adapter->priv_num; i++) { 728 priv = adapter->priv[i]; 729 if (!priv) 730 continue; 731 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 732 !priv->bss_started) || 733 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 734 !priv->media_connected)) 735 priv->usb_port = MWIFIEX_USB_EP_DATA; 736 } 737 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 738 card->port[i].block_status = false; 739 } else { 740 for (i = 0; i < adapter->priv_num; i++) { 741 priv = adapter->priv[i]; 742 if (!priv) 743 continue; 744 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 745 priv->bss_started) || 746 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 747 priv->media_connected)) { 748 active_port = priv->usb_port; 749 break; 750 } 751 } 752 for (i = 0; i < adapter->priv_num; i++) { 753 priv = adapter->priv[i]; 754 if (priv) 755 priv->usb_port = active_port; 756 } 757 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 758 if (active_port == card->port[i].tx_data_ep) 759 card->port[i].block_status = false; 760 else 761 card->port[i].block_status = true; 762 } 763 } 764 } 765 766 static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv) 767 { 768 struct usb_card_rec *card = priv->adapter->card; 769 int idx; 770 771 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 772 if (priv->usb_port == card->port[idx].tx_data_ep) 773 return !card->port[idx].block_status; 774 } 775 776 return false; 777 } 778 779 static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter) 780 { 781 struct usb_card_rec *card = adapter->card; 782 int i; 783 784 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 785 if (!card->port[i].block_status) 786 return false; 787 788 return true; 789 } 790 791 static int mwifiex_usb_construct_send_urb(struct mwifiex_adapter *adapter, 792 struct usb_tx_data_port *port, u8 ep, 793 struct urb_context *context, 794 struct sk_buff *skb_send) 795 { 796 struct usb_card_rec *card = adapter->card; 797 int ret = -EINPROGRESS; 798 struct urb *tx_urb; 799 800 context->adapter = adapter; 801 context->ep = ep; 802 context->skb = skb_send; 803 tx_urb = context->urb; 804 805 if (ep == card->tx_cmd_ep && 806 card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT) 807 usb_fill_int_urb(tx_urb, card->udev, 808 usb_sndintpipe(card->udev, ep), skb_send->data, 809 skb_send->len, mwifiex_usb_tx_complete, 810 (void *)context, card->tx_cmd_interval); 811 else 812 usb_fill_bulk_urb(tx_urb, card->udev, 813 usb_sndbulkpipe(card->udev, ep), 814 skb_send->data, skb_send->len, 815 mwifiex_usb_tx_complete, (void *)context); 816 817 tx_urb->transfer_flags |= URB_ZERO_PACKET; 818 819 if (ep == card->tx_cmd_ep) 820 atomic_inc(&card->tx_cmd_urb_pending); 821 else 822 atomic_inc(&port->tx_data_urb_pending); 823 824 if (ep != card->tx_cmd_ep && 825 atomic_read(&port->tx_data_urb_pending) == 826 MWIFIEX_TX_DATA_URB) { 827 port->block_status = true; 828 adapter->data_sent = mwifiex_usb_data_sent(adapter); 829 ret = -ENOSR; 830 } 831 832 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { 833 mwifiex_dbg(adapter, ERROR, 834 "%s: usb_submit_urb failed\n", __func__); 835 if (ep == card->tx_cmd_ep) { 836 atomic_dec(&card->tx_cmd_urb_pending); 837 } else { 838 atomic_dec(&port->tx_data_urb_pending); 839 port->block_status = false; 840 adapter->data_sent = false; 841 if (port->tx_data_ix) 842 port->tx_data_ix--; 843 else 844 port->tx_data_ix = MWIFIEX_TX_DATA_URB; 845 } 846 ret = -1; 847 } 848 849 return ret; 850 } 851 852 static int mwifiex_usb_prepare_tx_aggr_skb(struct mwifiex_adapter *adapter, 853 struct usb_tx_data_port *port, 854 struct sk_buff **skb_send) 855 { 856 struct sk_buff *skb_aggr, *skb_tmp; 857 u8 *payload, pad; 858 u16 align = adapter->bus_aggr.tx_aggr_align; 859 struct mwifiex_txinfo *tx_info = NULL; 860 bool is_txinfo_set = false; 861 862 /* Packets in aggr_list will be send in either skb_aggr or 863 * write complete, delete the tx_aggr timer 864 */ 865 if (port->tx_aggr.timer_cnxt.is_hold_timer_set) { 866 del_timer(&port->tx_aggr.timer_cnxt.hold_timer); 867 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 868 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 869 } 870 871 skb_aggr = mwifiex_alloc_dma_align_buf(port->tx_aggr.aggr_len, 872 GFP_ATOMIC); 873 if (!skb_aggr) { 874 mwifiex_dbg(adapter, ERROR, 875 "%s: alloc skb_aggr failed\n", __func__); 876 877 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) 878 mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); 879 880 port->tx_aggr.aggr_num = 0; 881 port->tx_aggr.aggr_len = 0; 882 return -EBUSY; 883 } 884 885 tx_info = MWIFIEX_SKB_TXCB(skb_aggr); 886 memset(tx_info, 0, sizeof(*tx_info)); 887 888 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) { 889 /* padding for aligning next packet header*/ 890 pad = (align - (skb_tmp->len & (align - 1))) % align; 891 payload = skb_put(skb_aggr, skb_tmp->len + pad); 892 memcpy(payload, skb_tmp->data, skb_tmp->len); 893 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 894 /* do not padding for last packet*/ 895 *(u16 *)payload = cpu_to_le16(skb_tmp->len); 896 *(u16 *)&payload[2] = 897 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 898 skb_trim(skb_aggr, skb_aggr->len - pad); 899 } else { 900 /* add aggregation interface header */ 901 *(u16 *)payload = cpu_to_le16(skb_tmp->len + pad); 902 *(u16 *)&payload[2] = 903 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2); 904 } 905 906 if (!is_txinfo_set) { 907 tx_info->bss_num = MWIFIEX_SKB_TXCB(skb_tmp)->bss_num; 908 tx_info->bss_type = MWIFIEX_SKB_TXCB(skb_tmp)->bss_type; 909 is_txinfo_set = true; 910 } 911 912 port->tx_aggr.aggr_num--; 913 port->tx_aggr.aggr_len -= (skb_tmp->len + pad); 914 mwifiex_write_data_complete(adapter, skb_tmp, 0, 0); 915 } 916 917 tx_info->pkt_len = skb_aggr->len - 918 (sizeof(struct txpd) + adapter->intf_hdr_len); 919 tx_info->flags |= MWIFIEX_BUF_FLAG_AGGR_PKT; 920 921 port->tx_aggr.aggr_num = 0; 922 port->tx_aggr.aggr_len = 0; 923 *skb_send = skb_aggr; 924 925 return 0; 926 } 927 928 /* This function prepare data packet to be send under usb tx aggregation 929 * protocol, check current usb aggregation status, link packet to aggrgation 930 * list if possible, work flow as below: 931 * (1) if only 1 packet available, add usb tx aggregation header and send. 932 * (2) if packet is able to aggregated, link it to current aggregation list. 933 * (3) if packet is not able to aggregated, aggregate and send exist packets 934 * in aggrgation list. Then, link packet in the list if there is more 935 * packet in transmit queue, otherwise try to transmit single packet. 936 */ 937 static int mwifiex_usb_aggr_tx_data(struct mwifiex_adapter *adapter, u8 ep, 938 struct sk_buff *skb, 939 struct mwifiex_tx_param *tx_param, 940 struct usb_tx_data_port *port) 941 { 942 u8 *payload, pad; 943 u16 align = adapter->bus_aggr.tx_aggr_align; 944 struct sk_buff *skb_send = NULL; 945 struct urb_context *context = NULL; 946 struct txpd *local_tx_pd = 947 (struct txpd *)((u8 *)skb->data + adapter->intf_hdr_len); 948 u8 f_send_aggr_buf = 0; 949 u8 f_send_cur_buf = 0; 950 u8 f_precopy_cur_buf = 0; 951 u8 f_postcopy_cur_buf = 0; 952 u32 timeout; 953 int ret; 954 955 /* padding to ensure each packet alginment */ 956 pad = (align - (skb->len & (align - 1))) % align; 957 958 if (tx_param && tx_param->next_pkt_len) { 959 /* next packet available in tx queue*/ 960 if (port->tx_aggr.aggr_len + skb->len + pad > 961 adapter->bus_aggr.tx_aggr_max_size) { 962 f_send_aggr_buf = 1; 963 f_postcopy_cur_buf = 1; 964 } else { 965 /* current packet could be aggregated*/ 966 f_precopy_cur_buf = 1; 967 968 if (port->tx_aggr.aggr_len + skb->len + pad + 969 tx_param->next_pkt_len > 970 adapter->bus_aggr.tx_aggr_max_size || 971 port->tx_aggr.aggr_num + 2 > 972 adapter->bus_aggr.tx_aggr_max_num) { 973 /* next packet could not be aggregated 974 * send current aggregation buffer 975 */ 976 f_send_aggr_buf = 1; 977 } 978 } 979 } else { 980 /* last packet in tx queue */ 981 if (port->tx_aggr.aggr_num > 0) { 982 /* pending packets in aggregation buffer*/ 983 if (port->tx_aggr.aggr_len + skb->len + pad > 984 adapter->bus_aggr.tx_aggr_max_size) { 985 /* current packet not be able to aggregated, 986 * send aggr buffer first, then send packet. 987 */ 988 f_send_cur_buf = 1; 989 } else { 990 /* last packet, Aggregation and send */ 991 f_precopy_cur_buf = 1; 992 } 993 994 f_send_aggr_buf = 1; 995 } else { 996 /* no pending packets in aggregation buffer, 997 * send current packet immediately 998 */ 999 f_send_cur_buf = 1; 1000 } 1001 } 1002 1003 if (local_tx_pd->flags & MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET) { 1004 /* Send NULL packet immediately*/ 1005 if (f_precopy_cur_buf) { 1006 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 1007 f_precopy_cur_buf = 0; 1008 f_send_aggr_buf = 0; 1009 f_send_cur_buf = 1; 1010 } else { 1011 f_send_aggr_buf = 1; 1012 } 1013 } else if (f_postcopy_cur_buf) { 1014 f_send_cur_buf = 1; 1015 f_postcopy_cur_buf = 0; 1016 } 1017 } 1018 1019 if (f_precopy_cur_buf) { 1020 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1021 port->tx_aggr.aggr_len += (skb->len + pad); 1022 port->tx_aggr.aggr_num++; 1023 if (f_send_aggr_buf) 1024 goto send_aggr_buf; 1025 1026 /* packet will not been send immediately, 1027 * set a timer to make sure it will be sent under 1028 * strict time limit. Dynamically fit the timeout 1029 * value, according to packets number in aggr_list 1030 */ 1031 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1032 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1033 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1034 timeout = 1035 port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1036 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1037 jiffies + msecs_to_jiffies(timeout)); 1038 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1039 } else { 1040 if (port->tx_aggr.timer_cnxt.hold_tmo_msecs < 1041 MWIFIEX_USB_TX_AGGR_TMO_MAX) { 1042 /* Dyanmic fit timeout */ 1043 timeout = 1044 ++port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1045 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1046 jiffies + msecs_to_jiffies(timeout)); 1047 } 1048 } 1049 } 1050 1051 send_aggr_buf: 1052 if (f_send_aggr_buf) { 1053 ret = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1054 if (!ret) { 1055 context = &port->tx_data_list[port->tx_data_ix++]; 1056 ret = mwifiex_usb_construct_send_urb(adapter, port, ep, 1057 context, skb_send); 1058 if (ret == -1) 1059 mwifiex_write_data_complete(adapter, skb_send, 1060 0, -1); 1061 } 1062 } 1063 1064 if (f_send_cur_buf) { 1065 if (f_send_aggr_buf) { 1066 if (atomic_read(&port->tx_data_urb_pending) >= 1067 MWIFIEX_TX_DATA_URB) { 1068 port->block_status = true; 1069 adapter->data_sent = 1070 mwifiex_usb_data_sent(adapter); 1071 /* no available urb, postcopy packet*/ 1072 f_postcopy_cur_buf = 1; 1073 goto postcopy_cur_buf; 1074 } 1075 1076 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1077 port->tx_data_ix = 0; 1078 } 1079 1080 payload = skb->data; 1081 *(u16 *)&payload[2] = 1082 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 1083 *(u16 *)payload = cpu_to_le16(skb->len); 1084 skb_send = skb; 1085 context = &port->tx_data_list[port->tx_data_ix++]; 1086 return mwifiex_usb_construct_send_urb(adapter, port, ep, 1087 context, skb_send); 1088 } 1089 1090 postcopy_cur_buf: 1091 if (f_postcopy_cur_buf) { 1092 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1093 port->tx_aggr.aggr_len += (skb->len + pad); 1094 port->tx_aggr.aggr_num++; 1095 /* New aggregation begin, start timer */ 1096 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1097 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1098 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1099 timeout = port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1100 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1101 jiffies + msecs_to_jiffies(timeout)); 1102 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1103 } 1104 } 1105 1106 return -EINPROGRESS; 1107 } 1108 1109 static void mwifiex_usb_tx_aggr_tmo(struct timer_list *t) 1110 { 1111 struct urb_context *urb_cnxt = NULL; 1112 struct sk_buff *skb_send = NULL; 1113 struct tx_aggr_tmr_cnxt *timer_context = 1114 from_timer(timer_context, t, hold_timer); 1115 struct mwifiex_adapter *adapter = timer_context->adapter; 1116 struct usb_tx_data_port *port = timer_context->port; 1117 unsigned long flags; 1118 int err = 0; 1119 1120 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1121 err = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1122 if (err) { 1123 mwifiex_dbg(adapter, ERROR, 1124 "prepare tx aggr skb failed, err=%d\n", err); 1125 goto unlock; 1126 } 1127 1128 if (atomic_read(&port->tx_data_urb_pending) >= 1129 MWIFIEX_TX_DATA_URB) { 1130 port->block_status = true; 1131 adapter->data_sent = 1132 mwifiex_usb_data_sent(adapter); 1133 err = -1; 1134 goto done; 1135 } 1136 1137 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1138 port->tx_data_ix = 0; 1139 1140 urb_cnxt = &port->tx_data_list[port->tx_data_ix++]; 1141 err = mwifiex_usb_construct_send_urb(adapter, port, port->tx_data_ep, 1142 urb_cnxt, skb_send); 1143 done: 1144 if (err == -1) 1145 mwifiex_write_data_complete(adapter, skb_send, 0, -1); 1146 unlock: 1147 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1148 } 1149 1150 /* This function write a command/data packet to card. */ 1151 static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, 1152 struct sk_buff *skb, 1153 struct mwifiex_tx_param *tx_param) 1154 { 1155 struct usb_card_rec *card = adapter->card; 1156 struct urb_context *context = NULL; 1157 struct usb_tx_data_port *port = NULL; 1158 unsigned long flags; 1159 int idx, ret; 1160 1161 if (adapter->is_suspended) { 1162 mwifiex_dbg(adapter, ERROR, 1163 "%s: not allowed while suspended\n", __func__); 1164 return -1; 1165 } 1166 1167 if (adapter->surprise_removed) { 1168 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); 1169 return -1; 1170 } 1171 1172 mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); 1173 1174 if (ep == card->tx_cmd_ep) { 1175 context = &card->tx_cmd; 1176 } else { 1177 /* get the data port structure for endpoint */ 1178 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1179 if (ep == card->port[idx].tx_data_ep) { 1180 port = &card->port[idx]; 1181 if (atomic_read(&port->tx_data_urb_pending) 1182 >= MWIFIEX_TX_DATA_URB) { 1183 port->block_status = true; 1184 adapter->data_sent = 1185 mwifiex_usb_data_sent(adapter); 1186 return -EBUSY; 1187 } 1188 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1189 port->tx_data_ix = 0; 1190 break; 1191 } 1192 } 1193 1194 if (!port) { 1195 mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n"); 1196 return -1; 1197 } 1198 1199 if (adapter->bus_aggr.enable) { 1200 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1201 ret = mwifiex_usb_aggr_tx_data(adapter, ep, skb, 1202 tx_param, port); 1203 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1204 return ret; 1205 } 1206 1207 context = &port->tx_data_list[port->tx_data_ix++]; 1208 } 1209 1210 return mwifiex_usb_construct_send_urb(adapter, port, ep, context, skb); 1211 } 1212 1213 static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) 1214 { 1215 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1216 struct usb_tx_data_port *port; 1217 int i, j; 1218 1219 card->tx_cmd.adapter = adapter; 1220 card->tx_cmd.ep = card->tx_cmd_ep; 1221 1222 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1223 if (!card->tx_cmd.urb) 1224 return -ENOMEM; 1225 1226 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 1227 port = &card->port[i]; 1228 if (!port->tx_data_ep) 1229 continue; 1230 port->tx_data_ix = 0; 1231 skb_queue_head_init(&port->tx_aggr.aggr_list); 1232 if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) 1233 port->block_status = false; 1234 else 1235 port->block_status = true; 1236 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { 1237 port->tx_data_list[j].adapter = adapter; 1238 port->tx_data_list[j].ep = port->tx_data_ep; 1239 port->tx_data_list[j].urb = 1240 usb_alloc_urb(0, GFP_KERNEL); 1241 if (!port->tx_data_list[j].urb) 1242 return -ENOMEM; 1243 } 1244 1245 port->tx_aggr.timer_cnxt.adapter = adapter; 1246 port->tx_aggr.timer_cnxt.port = port; 1247 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1248 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1249 timer_setup(&port->tx_aggr.timer_cnxt.hold_timer, 1250 mwifiex_usb_tx_aggr_tmo, 0); 1251 } 1252 1253 return 0; 1254 } 1255 1256 static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) 1257 { 1258 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1259 int i; 1260 1261 card->rx_cmd.adapter = adapter; 1262 card->rx_cmd.ep = card->rx_cmd_ep; 1263 1264 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1265 if (!card->rx_cmd.urb) 1266 return -ENOMEM; 1267 1268 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); 1269 if (!card->rx_cmd.skb) 1270 return -ENOMEM; 1271 1272 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) 1273 return -1; 1274 1275 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1276 card->rx_data_list[i].adapter = adapter; 1277 card->rx_data_list[i].ep = card->rx_data_ep; 1278 1279 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); 1280 if (!card->rx_data_list[i].urb) 1281 return -1; 1282 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], 1283 MWIFIEX_RX_DATA_BUF_SIZE)) 1284 return -1; 1285 } 1286 1287 return 0; 1288 } 1289 1290 /* This function register usb device and initialize parameter. */ 1291 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 1292 { 1293 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1294 1295 card->adapter = adapter; 1296 1297 switch (le16_to_cpu(card->udev->descriptor.idProduct)) { 1298 case USB8997_PID_1: 1299 case USB8997_PID_2: 1300 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; 1301 strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME); 1302 adapter->ext_scan = true; 1303 break; 1304 case USB8766_PID_1: 1305 case USB8766_PID_2: 1306 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1307 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); 1308 adapter->ext_scan = true; 1309 break; 1310 case USB8801_PID_1: 1311 case USB8801_PID_2: 1312 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1313 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); 1314 adapter->ext_scan = false; 1315 break; 1316 case USB8797_PID_1: 1317 case USB8797_PID_2: 1318 default: 1319 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1320 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); 1321 break; 1322 } 1323 1324 adapter->usb_mc_status = false; 1325 adapter->usb_mc_setup = false; 1326 1327 return 0; 1328 } 1329 1330 static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) 1331 { 1332 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1333 struct usb_tx_data_port *port; 1334 struct sk_buff *skb_tmp; 1335 int idx; 1336 1337 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1338 port = &card->port[idx]; 1339 if (adapter->bus_aggr.enable) 1340 while ((skb_tmp = 1341 skb_dequeue(&port->tx_aggr.aggr_list))) 1342 mwifiex_write_data_complete(adapter, skb_tmp, 1343 0, -1); 1344 del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); 1345 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1346 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1347 } 1348 } 1349 1350 static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 1351 { 1352 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1353 1354 mwifiex_usb_free(card); 1355 1356 mwifiex_usb_cleanup_tx_aggr(adapter); 1357 1358 card->adapter = NULL; 1359 } 1360 1361 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 1362 struct mwifiex_fw_image *fw) 1363 { 1364 int ret = 0; 1365 u8 *firmware = fw->fw_buf, *recv_buff; 1366 u32 retries = USB8XXX_FW_MAX_RETRY + 1; 1367 u32 dlen; 1368 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; 1369 struct fw_data *fwdata; 1370 struct fw_sync_header sync_fw; 1371 u8 check_winner = 1; 1372 1373 if (!firmware) { 1374 mwifiex_dbg(adapter, ERROR, 1375 "No firmware image found! Terminating download\n"); 1376 ret = -1; 1377 goto fw_exit; 1378 } 1379 1380 /* Allocate memory for transmit */ 1381 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); 1382 if (!fwdata) { 1383 ret = -ENOMEM; 1384 goto fw_exit; 1385 } 1386 1387 /* Allocate memory for receive */ 1388 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); 1389 if (!recv_buff) { 1390 ret = -ENOMEM; 1391 goto cleanup; 1392 } 1393 1394 do { 1395 /* Send pseudo data to check winner status first */ 1396 if (check_winner) { 1397 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); 1398 dlen = 0; 1399 } else { 1400 /* copy the header of the fw_data to get the length */ 1401 memcpy(&fwdata->fw_hdr, &firmware[tlen], 1402 sizeof(struct fw_header)); 1403 1404 dlen = le32_to_cpu(fwdata->fw_hdr.data_len); 1405 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); 1406 tlen += sizeof(struct fw_header); 1407 1408 /* Command 7 doesn't have data length field */ 1409 if (dnld_cmd == FW_CMD_7) 1410 dlen = 0; 1411 1412 memcpy(fwdata->data, &firmware[tlen], dlen); 1413 1414 fwdata->seq_num = cpu_to_le32(fw_seqnum); 1415 tlen += dlen; 1416 } 1417 1418 /* If the send/receive fails or CRC occurs then retry */ 1419 while (--retries) { 1420 u8 *buf = (u8 *)fwdata; 1421 u32 len = FW_DATA_XMIT_SIZE; 1422 1423 /* send the firmware block */ 1424 ret = mwifiex_write_data_sync(adapter, buf, &len, 1425 MWIFIEX_USB_EP_CMD_EVENT, 1426 MWIFIEX_USB_TIMEOUT); 1427 if (ret) { 1428 mwifiex_dbg(adapter, ERROR, 1429 "write_data_sync: failed: %d\n", 1430 ret); 1431 continue; 1432 } 1433 1434 buf = recv_buff; 1435 len = FW_DNLD_RX_BUF_SIZE; 1436 1437 /* Receive the firmware block response */ 1438 ret = mwifiex_read_data_sync(adapter, buf, &len, 1439 MWIFIEX_USB_EP_CMD_EVENT, 1440 MWIFIEX_USB_TIMEOUT); 1441 if (ret) { 1442 mwifiex_dbg(adapter, ERROR, 1443 "read_data_sync: failed: %d\n", 1444 ret); 1445 continue; 1446 } 1447 1448 memcpy(&sync_fw, recv_buff, 1449 sizeof(struct fw_sync_header)); 1450 1451 /* check 1st firmware block resp for highest bit set */ 1452 if (check_winner) { 1453 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { 1454 mwifiex_dbg(adapter, WARN, 1455 "USB is not the winner %#x\n", 1456 sync_fw.cmd); 1457 1458 /* returning success */ 1459 ret = 0; 1460 goto cleanup; 1461 } 1462 1463 mwifiex_dbg(adapter, MSG, 1464 "start to download FW...\n"); 1465 1466 check_winner = 0; 1467 break; 1468 } 1469 1470 /* check the firmware block response for CRC errors */ 1471 if (sync_fw.cmd) { 1472 mwifiex_dbg(adapter, ERROR, 1473 "FW received block with CRC %#x\n", 1474 sync_fw.cmd); 1475 ret = -1; 1476 continue; 1477 } 1478 1479 retries = USB8XXX_FW_MAX_RETRY + 1; 1480 break; 1481 } 1482 fw_seqnum++; 1483 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); 1484 1485 cleanup: 1486 mwifiex_dbg(adapter, MSG, 1487 "info: FW download over, size %d bytes\n", tlen); 1488 1489 kfree(recv_buff); 1490 kfree(fwdata); 1491 1492 if (retries) 1493 ret = 0; 1494 fw_exit: 1495 return ret; 1496 } 1497 1498 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, 1499 struct mwifiex_fw_image *fw) 1500 { 1501 int ret; 1502 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1503 1504 if (card->usb_boot_state == USB8XXX_FW_DNLD) { 1505 ret = mwifiex_prog_fw_w_helper(adapter, fw); 1506 if (ret) 1507 return -1; 1508 1509 /* Boot state changes after successful firmware download */ 1510 if (card->usb_boot_state == USB8XXX_FW_DNLD) 1511 return -1; 1512 } 1513 1514 ret = mwifiex_usb_rx_init(adapter); 1515 if (!ret) 1516 ret = mwifiex_usb_tx_init(adapter); 1517 1518 return ret; 1519 } 1520 1521 static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) 1522 { 1523 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1524 1525 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); 1526 if ((ep == card->rx_cmd_ep) && 1527 (!atomic_read(&card->rx_cmd_urb_pending))) 1528 mwifiex_usb_submit_rx_urb(&card->rx_cmd, 1529 MWIFIEX_RX_CMD_BUF_SIZE); 1530 1531 return; 1532 } 1533 1534 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, 1535 struct sk_buff *skb) 1536 { 1537 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); 1538 1539 return 0; 1540 } 1541 1542 /* This function wakes up the card. */ 1543 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 1544 { 1545 /* Simulation of HS_AWAKE event */ 1546 adapter->pm_wakeup_fw_try = false; 1547 del_timer(&adapter->wakeup_timer); 1548 adapter->pm_wakeup_card_req = false; 1549 adapter->ps_state = PS_STATE_AWAKE; 1550 1551 return 0; 1552 } 1553 1554 static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) 1555 { 1556 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1557 int i; 1558 struct urb_context *ctx; 1559 1560 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1561 if (card->rx_data_list[i].skb) 1562 continue; 1563 ctx = &card->rx_data_list[i]; 1564 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); 1565 } 1566 } 1567 1568 /* This function is called after the card has woken up. */ 1569 static inline int 1570 mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 1571 { 1572 return 0; 1573 } 1574 1575 static struct mwifiex_if_ops usb_ops = { 1576 .register_dev = mwifiex_register_dev, 1577 .unregister_dev = mwifiex_unregister_dev, 1578 .wakeup = mwifiex_pm_wakeup_card, 1579 .wakeup_complete = mwifiex_pm_wakeup_card_complete, 1580 1581 /* USB specific */ 1582 .dnld_fw = mwifiex_usb_dnld_fw, 1583 .cmdrsp_complete = mwifiex_usb_cmd_event_complete, 1584 .event_complete = mwifiex_usb_cmd_event_complete, 1585 .host_to_card = mwifiex_usb_host_to_card, 1586 .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, 1587 .multi_port_resync = mwifiex_usb_port_resync, 1588 .is_port_ready = mwifiex_usb_is_port_ready, 1589 }; 1590 1591 module_usb_driver(mwifiex_usb_driver); 1592 1593 MODULE_AUTHOR("Marvell International Ltd."); 1594 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); 1595 MODULE_VERSION(USB_VERSION); 1596 MODULE_LICENSE("GPL v2"); 1597 MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME); 1598 MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); 1599 MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); 1600 MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME); 1601