1 /* 2 * Marvell Wireless LAN device driver: USB specific handling 3 * 4 * Copyright (C) 2012-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "main.h" 21 #include "usb.h" 22 23 #define USB_VERSION "1.0" 24 25 static struct mwifiex_if_ops usb_ops; 26 27 static struct usb_device_id mwifiex_usb_table[] = { 28 /* 8766 */ 29 {USB_DEVICE(USB8XXX_VID, USB8766_PID_1)}, 30 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8766_PID_2, 31 USB_CLASS_VENDOR_SPEC, 32 USB_SUBCLASS_VENDOR_SPEC, 0xff)}, 33 /* 8797 */ 34 {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)}, 35 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2, 36 USB_CLASS_VENDOR_SPEC, 37 USB_SUBCLASS_VENDOR_SPEC, 0xff)}, 38 /* 8801 */ 39 {USB_DEVICE(USB8XXX_VID, USB8801_PID_1)}, 40 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8801_PID_2, 41 USB_CLASS_VENDOR_SPEC, 42 USB_SUBCLASS_VENDOR_SPEC, 0xff)}, 43 /* 8997 */ 44 {USB_DEVICE(USB8XXX_VID, USB8997_PID_1)}, 45 {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8997_PID_2, 46 USB_CLASS_VENDOR_SPEC, 47 USB_SUBCLASS_VENDOR_SPEC, 0xff)}, 48 { } /* Terminating entry */ 49 }; 50 51 MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); 52 53 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); 54 55 /* This function handles received packet. Necessary action is taken based on 56 * cmd/event/data. 57 */ 58 static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, 59 struct sk_buff *skb, u8 ep) 60 { 61 u32 recv_type; 62 __le32 tmp; 63 int ret; 64 65 if (adapter->hs_activated) 66 mwifiex_process_hs_config(adapter); 67 68 if (skb->len < INTF_HEADER_LEN) { 69 mwifiex_dbg(adapter, ERROR, 70 "%s: invalid skb->len\n", __func__); 71 return -1; 72 } 73 74 switch (ep) { 75 case MWIFIEX_USB_EP_CMD_EVENT: 76 mwifiex_dbg(adapter, EVENT, 77 "%s: EP_CMD_EVENT\n", __func__); 78 skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); 79 recv_type = le32_to_cpu(tmp); 80 skb_pull(skb, INTF_HEADER_LEN); 81 82 switch (recv_type) { 83 case MWIFIEX_USB_TYPE_CMD: 84 if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { 85 mwifiex_dbg(adapter, ERROR, 86 "CMD: skb->len too large\n"); 87 ret = -1; 88 goto exit_restore_skb; 89 } else if (!adapter->curr_cmd) { 90 mwifiex_dbg(adapter, WARN, "CMD: no curr_cmd\n"); 91 if (adapter->ps_state == PS_STATE_SLEEP_CFM) { 92 mwifiex_process_sleep_confirm_resp( 93 adapter, skb->data, 94 skb->len); 95 ret = 0; 96 goto exit_restore_skb; 97 } 98 ret = -1; 99 goto exit_restore_skb; 100 } 101 102 adapter->curr_cmd->resp_skb = skb; 103 adapter->cmd_resp_received = true; 104 break; 105 case MWIFIEX_USB_TYPE_EVENT: 106 if (skb->len < sizeof(u32)) { 107 mwifiex_dbg(adapter, ERROR, 108 "EVENT: skb->len too small\n"); 109 ret = -1; 110 goto exit_restore_skb; 111 } 112 skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); 113 adapter->event_cause = le32_to_cpu(tmp); 114 mwifiex_dbg(adapter, EVENT, 115 "event_cause %#x\n", adapter->event_cause); 116 117 if (skb->len > MAX_EVENT_SIZE) { 118 mwifiex_dbg(adapter, ERROR, 119 "EVENT: event body too large\n"); 120 ret = -1; 121 goto exit_restore_skb; 122 } 123 124 memcpy(adapter->event_body, skb->data + 125 MWIFIEX_EVENT_HEADER_LEN, skb->len); 126 127 adapter->event_received = true; 128 adapter->event_skb = skb; 129 break; 130 default: 131 mwifiex_dbg(adapter, ERROR, 132 "unknown recv_type %#x\n", recv_type); 133 return -1; 134 } 135 break; 136 case MWIFIEX_USB_EP_DATA: 137 mwifiex_dbg(adapter, DATA, "%s: EP_DATA\n", __func__); 138 if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { 139 mwifiex_dbg(adapter, ERROR, 140 "DATA: skb->len too large\n"); 141 return -1; 142 } 143 144 skb_queue_tail(&adapter->rx_data_q, skb); 145 adapter->data_received = true; 146 atomic_inc(&adapter->rx_pending); 147 break; 148 default: 149 mwifiex_dbg(adapter, ERROR, 150 "%s: unknown endport %#x\n", __func__, ep); 151 return -1; 152 } 153 154 return -EINPROGRESS; 155 156 exit_restore_skb: 157 /* The buffer will be reused for further cmds/events */ 158 skb_push(skb, INTF_HEADER_LEN); 159 160 return ret; 161 } 162 163 static void mwifiex_usb_rx_complete(struct urb *urb) 164 { 165 struct urb_context *context = (struct urb_context *)urb->context; 166 struct mwifiex_adapter *adapter = context->adapter; 167 struct sk_buff *skb = context->skb; 168 struct usb_card_rec *card; 169 int recv_length = urb->actual_length; 170 int size, status; 171 172 if (!adapter || !adapter->card) { 173 pr_err("mwifiex adapter or card structure is not valid\n"); 174 return; 175 } 176 177 card = (struct usb_card_rec *)adapter->card; 178 if (card->rx_cmd_ep == context->ep) 179 atomic_dec(&card->rx_cmd_urb_pending); 180 else 181 atomic_dec(&card->rx_data_urb_pending); 182 183 if (recv_length) { 184 if (urb->status || (adapter->surprise_removed)) { 185 mwifiex_dbg(adapter, ERROR, 186 "URB status is failed: %d\n", urb->status); 187 /* Do not free skb in case of command ep */ 188 if (card->rx_cmd_ep != context->ep) 189 dev_kfree_skb_any(skb); 190 goto setup_for_next; 191 } 192 if (skb->len > recv_length) 193 skb_trim(skb, recv_length); 194 else 195 skb_put(skb, recv_length - skb->len); 196 197 status = mwifiex_usb_recv(adapter, skb, context->ep); 198 199 mwifiex_dbg(adapter, INFO, 200 "info: recv_length=%d, status=%d\n", 201 recv_length, status); 202 if (status == -EINPROGRESS) { 203 mwifiex_queue_main_work(adapter); 204 205 /* urb for data_ep is re-submitted now; 206 * urb for cmd_ep will be re-submitted in callback 207 * mwifiex_usb_recv_complete 208 */ 209 if (card->rx_cmd_ep == context->ep) 210 return; 211 } else { 212 if (status == -1) 213 mwifiex_dbg(adapter, ERROR, 214 "received data processing failed!\n"); 215 216 /* Do not free skb in case of command ep */ 217 if (card->rx_cmd_ep != context->ep) 218 dev_kfree_skb_any(skb); 219 } 220 } else if (urb->status) { 221 if (!adapter->is_suspended) { 222 mwifiex_dbg(adapter, FATAL, 223 "Card is removed: %d\n", urb->status); 224 adapter->surprise_removed = true; 225 } 226 dev_kfree_skb_any(skb); 227 return; 228 } else { 229 /* Do not free skb in case of command ep */ 230 if (card->rx_cmd_ep != context->ep) 231 dev_kfree_skb_any(skb); 232 233 /* fall through setup_for_next */ 234 } 235 236 setup_for_next: 237 if (card->rx_cmd_ep == context->ep) 238 size = MWIFIEX_RX_CMD_BUF_SIZE; 239 else 240 size = MWIFIEX_RX_DATA_BUF_SIZE; 241 242 if (card->rx_cmd_ep == context->ep) { 243 mwifiex_usb_submit_rx_urb(context, size); 244 } else { 245 if (atomic_read(&adapter->rx_pending) <= HIGH_RX_PENDING) { 246 mwifiex_usb_submit_rx_urb(context, size); 247 } else { 248 context->skb = NULL; 249 } 250 } 251 252 return; 253 } 254 255 static void mwifiex_usb_tx_complete(struct urb *urb) 256 { 257 struct urb_context *context = (struct urb_context *)(urb->context); 258 struct mwifiex_adapter *adapter = context->adapter; 259 struct usb_card_rec *card = adapter->card; 260 struct usb_tx_data_port *port; 261 int i; 262 263 mwifiex_dbg(adapter, INFO, 264 "%s: status: %d\n", __func__, urb->status); 265 266 if (context->ep == card->tx_cmd_ep) { 267 mwifiex_dbg(adapter, CMD, 268 "%s: CMD\n", __func__); 269 atomic_dec(&card->tx_cmd_urb_pending); 270 adapter->cmd_sent = false; 271 } else { 272 mwifiex_dbg(adapter, DATA, 273 "%s: DATA\n", __func__); 274 mwifiex_write_data_complete(adapter, context->skb, 0, 275 urb->status ? -1 : 0); 276 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 277 port = &card->port[i]; 278 if (context->ep == port->tx_data_ep) { 279 atomic_dec(&port->tx_data_urb_pending); 280 port->block_status = false; 281 break; 282 } 283 } 284 adapter->data_sent = false; 285 } 286 287 if (card->mc_resync_flag) 288 mwifiex_multi_chan_resync(adapter); 289 290 mwifiex_queue_main_work(adapter); 291 292 return; 293 } 294 295 static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) 296 { 297 struct mwifiex_adapter *adapter = ctx->adapter; 298 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 299 300 if (card->rx_cmd_ep != ctx->ep) { 301 ctx->skb = dev_alloc_skb(size); 302 if (!ctx->skb) { 303 mwifiex_dbg(adapter, ERROR, 304 "%s: dev_alloc_skb failed\n", __func__); 305 return -ENOMEM; 306 } 307 } 308 309 if (card->rx_cmd_ep == ctx->ep && 310 card->rx_cmd_ep_type == USB_ENDPOINT_XFER_INT) 311 usb_fill_int_urb(ctx->urb, card->udev, 312 usb_rcvintpipe(card->udev, ctx->ep), 313 ctx->skb->data, size, mwifiex_usb_rx_complete, 314 (void *)ctx, card->rx_cmd_interval); 315 else 316 usb_fill_bulk_urb(ctx->urb, card->udev, 317 usb_rcvbulkpipe(card->udev, ctx->ep), 318 ctx->skb->data, size, mwifiex_usb_rx_complete, 319 (void *)ctx); 320 321 if (card->rx_cmd_ep == ctx->ep) 322 atomic_inc(&card->rx_cmd_urb_pending); 323 else 324 atomic_inc(&card->rx_data_urb_pending); 325 326 if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { 327 mwifiex_dbg(adapter, ERROR, "usb_submit_urb failed\n"); 328 dev_kfree_skb_any(ctx->skb); 329 ctx->skb = NULL; 330 331 if (card->rx_cmd_ep == ctx->ep) 332 atomic_dec(&card->rx_cmd_urb_pending); 333 else 334 atomic_dec(&card->rx_data_urb_pending); 335 336 return -1; 337 } 338 339 return 0; 340 } 341 342 static void mwifiex_usb_free(struct usb_card_rec *card) 343 { 344 struct usb_tx_data_port *port; 345 int i, j; 346 347 if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) 348 usb_kill_urb(card->rx_cmd.urb); 349 350 usb_free_urb(card->rx_cmd.urb); 351 card->rx_cmd.urb = NULL; 352 353 if (atomic_read(&card->rx_data_urb_pending)) 354 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) 355 if (card->rx_data_list[i].urb) 356 usb_kill_urb(card->rx_data_list[i].urb); 357 358 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 359 usb_free_urb(card->rx_data_list[i].urb); 360 card->rx_data_list[i].urb = NULL; 361 } 362 363 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 364 port = &card->port[i]; 365 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { 366 usb_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_usb_free(card); 648 649 mwifiex_dbg(adapter, FATAL, 650 "%s: removing card\n", __func__); 651 mwifiex_remove_card(adapter); 652 653 usb_put_dev(interface_to_usbdev(intf)); 654 } 655 656 static struct usb_driver mwifiex_usb_driver = { 657 .name = "mwifiex_usb", 658 .probe = mwifiex_usb_probe, 659 .disconnect = mwifiex_usb_disconnect, 660 .id_table = mwifiex_usb_table, 661 .suspend = mwifiex_usb_suspend, 662 .resume = mwifiex_usb_resume, 663 .soft_unbind = 1, 664 }; 665 666 static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 667 u32 *len, u8 ep, u32 timeout) 668 { 669 struct usb_card_rec *card = adapter->card; 670 int actual_length, ret; 671 672 if (!(*len % card->bulk_out_maxpktsize)) 673 (*len)++; 674 675 /* Send the data block */ 676 ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, 677 *len, &actual_length, timeout); 678 if (ret) { 679 mwifiex_dbg(adapter, ERROR, 680 "usb_bulk_msg for tx failed: %d\n", ret); 681 return ret; 682 } 683 684 *len = actual_length; 685 686 return ret; 687 } 688 689 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, 690 u32 *len, u8 ep, u32 timeout) 691 { 692 struct usb_card_rec *card = adapter->card; 693 int actual_length, ret; 694 695 /* Receive the data response */ 696 ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, 697 *len, &actual_length, timeout); 698 if (ret) { 699 mwifiex_dbg(adapter, ERROR, 700 "usb_bulk_msg for rx failed: %d\n", ret); 701 return ret; 702 } 703 704 *len = actual_length; 705 706 return ret; 707 } 708 709 static void mwifiex_usb_port_resync(struct mwifiex_adapter *adapter) 710 { 711 struct usb_card_rec *card = adapter->card; 712 u8 active_port = MWIFIEX_USB_EP_DATA; 713 struct mwifiex_private *priv = NULL; 714 int i; 715 716 if (adapter->usb_mc_status) { 717 for (i = 0; i < adapter->priv_num; i++) { 718 priv = adapter->priv[i]; 719 if (!priv) 720 continue; 721 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 722 !priv->bss_started) || 723 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 724 !priv->media_connected)) 725 priv->usb_port = MWIFIEX_USB_EP_DATA; 726 } 727 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 728 card->port[i].block_status = false; 729 } else { 730 for (i = 0; i < adapter->priv_num; i++) { 731 priv = adapter->priv[i]; 732 if (!priv) 733 continue; 734 if ((priv->bss_role == MWIFIEX_BSS_ROLE_UAP && 735 priv->bss_started) || 736 (priv->bss_role == MWIFIEX_BSS_ROLE_STA && 737 priv->media_connected)) { 738 active_port = priv->usb_port; 739 break; 740 } 741 } 742 for (i = 0; i < adapter->priv_num; i++) { 743 priv = adapter->priv[i]; 744 if (priv) 745 priv->usb_port = active_port; 746 } 747 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 748 if (active_port == card->port[i].tx_data_ep) 749 card->port[i].block_status = false; 750 else 751 card->port[i].block_status = true; 752 } 753 } 754 } 755 756 static bool mwifiex_usb_is_port_ready(struct mwifiex_private *priv) 757 { 758 struct usb_card_rec *card = priv->adapter->card; 759 int idx; 760 761 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 762 if (priv->usb_port == card->port[idx].tx_data_ep) 763 return !card->port[idx].block_status; 764 } 765 766 return false; 767 } 768 769 static inline u8 mwifiex_usb_data_sent(struct mwifiex_adapter *adapter) 770 { 771 struct usb_card_rec *card = adapter->card; 772 int i; 773 774 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) 775 if (!card->port[i].block_status) 776 return false; 777 778 return true; 779 } 780 781 static int mwifiex_usb_construct_send_urb(struct mwifiex_adapter *adapter, 782 struct usb_tx_data_port *port, u8 ep, 783 struct urb_context *context, 784 struct sk_buff *skb_send) 785 { 786 struct usb_card_rec *card = adapter->card; 787 int ret = -EINPROGRESS; 788 struct urb *tx_urb; 789 790 context->adapter = adapter; 791 context->ep = ep; 792 context->skb = skb_send; 793 tx_urb = context->urb; 794 795 if (ep == card->tx_cmd_ep && 796 card->tx_cmd_ep_type == USB_ENDPOINT_XFER_INT) 797 usb_fill_int_urb(tx_urb, card->udev, 798 usb_sndintpipe(card->udev, ep), skb_send->data, 799 skb_send->len, mwifiex_usb_tx_complete, 800 (void *)context, card->tx_cmd_interval); 801 else 802 usb_fill_bulk_urb(tx_urb, card->udev, 803 usb_sndbulkpipe(card->udev, ep), 804 skb_send->data, skb_send->len, 805 mwifiex_usb_tx_complete, (void *)context); 806 807 tx_urb->transfer_flags |= URB_ZERO_PACKET; 808 809 if (ep == card->tx_cmd_ep) 810 atomic_inc(&card->tx_cmd_urb_pending); 811 else 812 atomic_inc(&port->tx_data_urb_pending); 813 814 if (ep != card->tx_cmd_ep && 815 atomic_read(&port->tx_data_urb_pending) == 816 MWIFIEX_TX_DATA_URB) { 817 port->block_status = true; 818 adapter->data_sent = mwifiex_usb_data_sent(adapter); 819 ret = -ENOSR; 820 } 821 822 if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { 823 mwifiex_dbg(adapter, ERROR, 824 "%s: usb_submit_urb failed\n", __func__); 825 if (ep == card->tx_cmd_ep) { 826 atomic_dec(&card->tx_cmd_urb_pending); 827 } else { 828 atomic_dec(&port->tx_data_urb_pending); 829 port->block_status = false; 830 adapter->data_sent = false; 831 if (port->tx_data_ix) 832 port->tx_data_ix--; 833 else 834 port->tx_data_ix = MWIFIEX_TX_DATA_URB; 835 } 836 ret = -1; 837 } 838 839 return ret; 840 } 841 842 static int mwifiex_usb_prepare_tx_aggr_skb(struct mwifiex_adapter *adapter, 843 struct usb_tx_data_port *port, 844 struct sk_buff **skb_send) 845 { 846 struct sk_buff *skb_aggr, *skb_tmp; 847 u8 *payload, pad; 848 u16 align = adapter->bus_aggr.tx_aggr_align; 849 struct mwifiex_txinfo *tx_info = NULL; 850 bool is_txinfo_set = false; 851 852 /* Packets in aggr_list will be send in either skb_aggr or 853 * write complete, delete the tx_aggr timer 854 */ 855 if (port->tx_aggr.timer_cnxt.is_hold_timer_set) { 856 del_timer(&port->tx_aggr.timer_cnxt.hold_timer); 857 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 858 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 859 } 860 861 skb_aggr = mwifiex_alloc_dma_align_buf(port->tx_aggr.aggr_len, 862 GFP_ATOMIC); 863 if (!skb_aggr) { 864 mwifiex_dbg(adapter, ERROR, 865 "%s: alloc skb_aggr failed\n", __func__); 866 867 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) 868 mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); 869 870 port->tx_aggr.aggr_num = 0; 871 port->tx_aggr.aggr_len = 0; 872 return -EBUSY; 873 } 874 875 tx_info = MWIFIEX_SKB_TXCB(skb_aggr); 876 memset(tx_info, 0, sizeof(*tx_info)); 877 878 while ((skb_tmp = skb_dequeue(&port->tx_aggr.aggr_list))) { 879 /* padding for aligning next packet header*/ 880 pad = (align - (skb_tmp->len & (align - 1))) % align; 881 payload = skb_put(skb_aggr, skb_tmp->len + pad); 882 memcpy(payload, skb_tmp->data, skb_tmp->len); 883 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 884 /* do not padding for last packet*/ 885 *(u16 *)payload = cpu_to_le16(skb_tmp->len); 886 *(u16 *)&payload[2] = 887 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 888 skb_trim(skb_aggr, skb_aggr->len - pad); 889 } else { 890 /* add aggregation interface header */ 891 *(u16 *)payload = cpu_to_le16(skb_tmp->len + pad); 892 *(u16 *)&payload[2] = 893 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2); 894 } 895 896 if (!is_txinfo_set) { 897 tx_info->bss_num = MWIFIEX_SKB_TXCB(skb_tmp)->bss_num; 898 tx_info->bss_type = MWIFIEX_SKB_TXCB(skb_tmp)->bss_type; 899 is_txinfo_set = true; 900 } 901 902 port->tx_aggr.aggr_num--; 903 port->tx_aggr.aggr_len -= (skb_tmp->len + pad); 904 mwifiex_write_data_complete(adapter, skb_tmp, 0, 0); 905 } 906 907 tx_info->pkt_len = skb_aggr->len - 908 (sizeof(struct txpd) + adapter->intf_hdr_len); 909 tx_info->flags |= MWIFIEX_BUF_FLAG_AGGR_PKT; 910 911 port->tx_aggr.aggr_num = 0; 912 port->tx_aggr.aggr_len = 0; 913 *skb_send = skb_aggr; 914 915 return 0; 916 } 917 918 /* This function prepare data packet to be send under usb tx aggregation 919 * protocol, check current usb aggregation status, link packet to aggrgation 920 * list if possible, work flow as below: 921 * (1) if only 1 packet available, add usb tx aggregation header and send. 922 * (2) if packet is able to aggregated, link it to current aggregation list. 923 * (3) if packet is not able to aggregated, aggregate and send exist packets 924 * in aggrgation list. Then, link packet in the list if there is more 925 * packet in transmit queue, otherwise try to transmit single packet. 926 */ 927 static int mwifiex_usb_aggr_tx_data(struct mwifiex_adapter *adapter, u8 ep, 928 struct sk_buff *skb, 929 struct mwifiex_tx_param *tx_param, 930 struct usb_tx_data_port *port) 931 { 932 u8 *payload, pad; 933 u16 align = adapter->bus_aggr.tx_aggr_align; 934 struct sk_buff *skb_send = NULL; 935 struct urb_context *context = NULL; 936 struct txpd *local_tx_pd = 937 (struct txpd *)((u8 *)skb->data + adapter->intf_hdr_len); 938 u8 f_send_aggr_buf = 0; 939 u8 f_send_cur_buf = 0; 940 u8 f_precopy_cur_buf = 0; 941 u8 f_postcopy_cur_buf = 0; 942 u32 timeout; 943 int ret; 944 945 /* padding to ensure each packet alginment */ 946 pad = (align - (skb->len & (align - 1))) % align; 947 948 if (tx_param && tx_param->next_pkt_len) { 949 /* next packet available in tx queue*/ 950 if (port->tx_aggr.aggr_len + skb->len + pad > 951 adapter->bus_aggr.tx_aggr_max_size) { 952 f_send_aggr_buf = 1; 953 f_postcopy_cur_buf = 1; 954 } else { 955 /* current packet could be aggregated*/ 956 f_precopy_cur_buf = 1; 957 958 if (port->tx_aggr.aggr_len + skb->len + pad + 959 tx_param->next_pkt_len > 960 adapter->bus_aggr.tx_aggr_max_size || 961 port->tx_aggr.aggr_num + 2 > 962 adapter->bus_aggr.tx_aggr_max_num) { 963 /* next packet could not be aggregated 964 * send current aggregation buffer 965 */ 966 f_send_aggr_buf = 1; 967 } 968 } 969 } else { 970 /* last packet in tx queue */ 971 if (port->tx_aggr.aggr_num > 0) { 972 /* pending packets in aggregation buffer*/ 973 if (port->tx_aggr.aggr_len + skb->len + pad > 974 adapter->bus_aggr.tx_aggr_max_size) { 975 /* current packet not be able to aggregated, 976 * send aggr buffer first, then send packet. 977 */ 978 f_send_cur_buf = 1; 979 } else { 980 /* last packet, Aggregation and send */ 981 f_precopy_cur_buf = 1; 982 } 983 984 f_send_aggr_buf = 1; 985 } else { 986 /* no pending packets in aggregation buffer, 987 * send current packet immediately 988 */ 989 f_send_cur_buf = 1; 990 } 991 } 992 993 if (local_tx_pd->flags & MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET) { 994 /* Send NULL packet immediately*/ 995 if (f_precopy_cur_buf) { 996 if (skb_queue_empty(&port->tx_aggr.aggr_list)) { 997 f_precopy_cur_buf = 0; 998 f_send_aggr_buf = 0; 999 f_send_cur_buf = 1; 1000 } else { 1001 f_send_aggr_buf = 1; 1002 } 1003 } else if (f_postcopy_cur_buf) { 1004 f_send_cur_buf = 1; 1005 f_postcopy_cur_buf = 0; 1006 } 1007 } 1008 1009 if (f_precopy_cur_buf) { 1010 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1011 port->tx_aggr.aggr_len += (skb->len + pad); 1012 port->tx_aggr.aggr_num++; 1013 if (f_send_aggr_buf) 1014 goto send_aggr_buf; 1015 1016 /* packet will not been send immediately, 1017 * set a timer to make sure it will be sent under 1018 * strict time limit. Dynamically fit the timeout 1019 * value, according to packets number in aggr_list 1020 */ 1021 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1022 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1023 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1024 timeout = 1025 port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1026 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1027 jiffies + msecs_to_jiffies(timeout)); 1028 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1029 } else { 1030 if (port->tx_aggr.timer_cnxt.hold_tmo_msecs < 1031 MWIFIEX_USB_TX_AGGR_TMO_MAX) { 1032 /* Dyanmic fit timeout */ 1033 timeout = 1034 ++port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1035 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1036 jiffies + msecs_to_jiffies(timeout)); 1037 } 1038 } 1039 } 1040 1041 send_aggr_buf: 1042 if (f_send_aggr_buf) { 1043 ret = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1044 if (!ret) { 1045 context = &port->tx_data_list[port->tx_data_ix++]; 1046 ret = mwifiex_usb_construct_send_urb(adapter, port, ep, 1047 context, skb_send); 1048 if (ret == -1) 1049 mwifiex_write_data_complete(adapter, skb_send, 1050 0, -1); 1051 } 1052 } 1053 1054 if (f_send_cur_buf) { 1055 if (f_send_aggr_buf) { 1056 if (atomic_read(&port->tx_data_urb_pending) >= 1057 MWIFIEX_TX_DATA_URB) { 1058 port->block_status = true; 1059 adapter->data_sent = 1060 mwifiex_usb_data_sent(adapter); 1061 /* no available urb, postcopy packet*/ 1062 f_postcopy_cur_buf = 1; 1063 goto postcopy_cur_buf; 1064 } 1065 1066 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1067 port->tx_data_ix = 0; 1068 } 1069 1070 payload = skb->data; 1071 *(u16 *)&payload[2] = 1072 cpu_to_le16(MWIFIEX_TYPE_AGGR_DATA_V2 | 0x80); 1073 *(u16 *)payload = cpu_to_le16(skb->len); 1074 skb_send = skb; 1075 context = &port->tx_data_list[port->tx_data_ix++]; 1076 return mwifiex_usb_construct_send_urb(adapter, port, ep, 1077 context, skb_send); 1078 } 1079 1080 postcopy_cur_buf: 1081 if (f_postcopy_cur_buf) { 1082 skb_queue_tail(&port->tx_aggr.aggr_list, skb); 1083 port->tx_aggr.aggr_len += (skb->len + pad); 1084 port->tx_aggr.aggr_num++; 1085 /* New aggregation begin, start timer */ 1086 if (!port->tx_aggr.timer_cnxt.is_hold_timer_set) { 1087 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 1088 MWIFIEX_USB_TX_AGGR_TMO_MIN; 1089 timeout = port->tx_aggr.timer_cnxt.hold_tmo_msecs; 1090 mod_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1091 jiffies + msecs_to_jiffies(timeout)); 1092 port->tx_aggr.timer_cnxt.is_hold_timer_set = true; 1093 } 1094 } 1095 1096 return -EINPROGRESS; 1097 } 1098 1099 static void mwifiex_usb_tx_aggr_tmo(unsigned long context) 1100 { 1101 struct urb_context *urb_cnxt = NULL; 1102 struct sk_buff *skb_send = NULL; 1103 struct tx_aggr_tmr_cnxt *timer_context = 1104 (struct tx_aggr_tmr_cnxt *)context; 1105 struct mwifiex_adapter *adapter = timer_context->adapter; 1106 struct usb_tx_data_port *port = timer_context->port; 1107 unsigned long flags; 1108 int err = 0; 1109 1110 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1111 err = mwifiex_usb_prepare_tx_aggr_skb(adapter, port, &skb_send); 1112 if (err) { 1113 mwifiex_dbg(adapter, ERROR, 1114 "prepare tx aggr skb failed, err=%d\n", err); 1115 return; 1116 } 1117 1118 if (atomic_read(&port->tx_data_urb_pending) >= 1119 MWIFIEX_TX_DATA_URB) { 1120 port->block_status = true; 1121 adapter->data_sent = 1122 mwifiex_usb_data_sent(adapter); 1123 err = -1; 1124 goto done; 1125 } 1126 1127 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1128 port->tx_data_ix = 0; 1129 1130 urb_cnxt = &port->tx_data_list[port->tx_data_ix++]; 1131 err = mwifiex_usb_construct_send_urb(adapter, port, port->tx_data_ep, 1132 urb_cnxt, skb_send); 1133 done: 1134 if (err == -1) 1135 mwifiex_write_data_complete(adapter, skb_send, 0, -1); 1136 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1137 } 1138 1139 /* This function write a command/data packet to card. */ 1140 static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, 1141 struct sk_buff *skb, 1142 struct mwifiex_tx_param *tx_param) 1143 { 1144 struct usb_card_rec *card = adapter->card; 1145 struct urb_context *context = NULL; 1146 struct usb_tx_data_port *port = NULL; 1147 unsigned long flags; 1148 int idx, ret; 1149 1150 if (adapter->is_suspended) { 1151 mwifiex_dbg(adapter, ERROR, 1152 "%s: not allowed while suspended\n", __func__); 1153 return -1; 1154 } 1155 1156 if (adapter->surprise_removed) { 1157 mwifiex_dbg(adapter, ERROR, "%s: device removed\n", __func__); 1158 return -1; 1159 } 1160 1161 mwifiex_dbg(adapter, INFO, "%s: ep=%d\n", __func__, ep); 1162 1163 if (ep == card->tx_cmd_ep) { 1164 context = &card->tx_cmd; 1165 } else { 1166 /* get the data port structure for endpoint */ 1167 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1168 if (ep == card->port[idx].tx_data_ep) { 1169 port = &card->port[idx]; 1170 if (atomic_read(&port->tx_data_urb_pending) 1171 >= MWIFIEX_TX_DATA_URB) { 1172 port->block_status = true; 1173 adapter->data_sent = 1174 mwifiex_usb_data_sent(adapter); 1175 return -EBUSY; 1176 } 1177 if (port->tx_data_ix >= MWIFIEX_TX_DATA_URB) 1178 port->tx_data_ix = 0; 1179 break; 1180 } 1181 } 1182 1183 if (!port) { 1184 mwifiex_dbg(adapter, ERROR, "Wrong usb tx data port\n"); 1185 return -1; 1186 } 1187 1188 if (adapter->bus_aggr.enable) { 1189 spin_lock_irqsave(&port->tx_aggr_lock, flags); 1190 ret = mwifiex_usb_aggr_tx_data(adapter, ep, skb, 1191 tx_param, port); 1192 spin_unlock_irqrestore(&port->tx_aggr_lock, flags); 1193 return ret; 1194 } 1195 1196 context = &port->tx_data_list[port->tx_data_ix++]; 1197 } 1198 1199 return mwifiex_usb_construct_send_urb(adapter, port, ep, context, skb); 1200 } 1201 1202 static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) 1203 { 1204 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1205 struct usb_tx_data_port *port; 1206 int i, j; 1207 1208 card->tx_cmd.adapter = adapter; 1209 card->tx_cmd.ep = card->tx_cmd_ep; 1210 1211 card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1212 if (!card->tx_cmd.urb) 1213 return -ENOMEM; 1214 1215 for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) { 1216 port = &card->port[i]; 1217 if (!port->tx_data_ep) 1218 continue; 1219 port->tx_data_ix = 0; 1220 skb_queue_head_init(&port->tx_aggr.aggr_list); 1221 if (port->tx_data_ep == MWIFIEX_USB_EP_DATA) 1222 port->block_status = false; 1223 else 1224 port->block_status = true; 1225 for (j = 0; j < MWIFIEX_TX_DATA_URB; j++) { 1226 port->tx_data_list[j].adapter = adapter; 1227 port->tx_data_list[j].ep = port->tx_data_ep; 1228 port->tx_data_list[j].urb = 1229 usb_alloc_urb(0, GFP_KERNEL); 1230 if (!port->tx_data_list[j].urb) 1231 return -ENOMEM; 1232 } 1233 1234 port->tx_aggr.timer_cnxt.adapter = adapter; 1235 port->tx_aggr.timer_cnxt.port = port; 1236 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1237 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1238 setup_timer(&port->tx_aggr.timer_cnxt.hold_timer, 1239 mwifiex_usb_tx_aggr_tmo, 1240 (unsigned long)&port->tx_aggr.timer_cnxt); 1241 } 1242 1243 return 0; 1244 } 1245 1246 static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) 1247 { 1248 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1249 int i; 1250 1251 card->rx_cmd.adapter = adapter; 1252 card->rx_cmd.ep = card->rx_cmd_ep; 1253 1254 card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); 1255 if (!card->rx_cmd.urb) 1256 return -ENOMEM; 1257 1258 card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); 1259 if (!card->rx_cmd.skb) 1260 return -ENOMEM; 1261 1262 if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) 1263 return -1; 1264 1265 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1266 card->rx_data_list[i].adapter = adapter; 1267 card->rx_data_list[i].ep = card->rx_data_ep; 1268 1269 card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); 1270 if (!card->rx_data_list[i].urb) 1271 return -1; 1272 if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], 1273 MWIFIEX_RX_DATA_BUF_SIZE)) 1274 return -1; 1275 } 1276 1277 return 0; 1278 } 1279 1280 /* This function register usb device and initialize parameter. */ 1281 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 1282 { 1283 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1284 1285 card->adapter = adapter; 1286 1287 switch (le16_to_cpu(card->udev->descriptor.idProduct)) { 1288 case USB8997_PID_1: 1289 case USB8997_PID_2: 1290 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K; 1291 strcpy(adapter->fw_name, USB8997_DEFAULT_FW_NAME); 1292 adapter->ext_scan = true; 1293 break; 1294 case USB8766_PID_1: 1295 case USB8766_PID_2: 1296 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1297 strcpy(adapter->fw_name, USB8766_DEFAULT_FW_NAME); 1298 adapter->ext_scan = true; 1299 break; 1300 case USB8801_PID_1: 1301 case USB8801_PID_2: 1302 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1303 strcpy(adapter->fw_name, USB8801_DEFAULT_FW_NAME); 1304 adapter->ext_scan = false; 1305 break; 1306 case USB8797_PID_1: 1307 case USB8797_PID_2: 1308 default: 1309 adapter->tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 1310 strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); 1311 break; 1312 } 1313 1314 adapter->usb_mc_status = false; 1315 adapter->usb_mc_setup = false; 1316 1317 return 0; 1318 } 1319 1320 static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) 1321 { 1322 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1323 struct usb_tx_data_port *port; 1324 struct sk_buff *skb_tmp; 1325 int idx; 1326 1327 for (idx = 0; idx < MWIFIEX_TX_DATA_PORT; idx++) { 1328 port = &card->port[idx]; 1329 if (adapter->bus_aggr.enable) 1330 while ((skb_tmp = 1331 skb_dequeue(&port->tx_aggr.aggr_list))) 1332 mwifiex_write_data_complete(adapter, skb_tmp, 1333 0, -1); 1334 del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); 1335 port->tx_aggr.timer_cnxt.is_hold_timer_set = false; 1336 port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; 1337 } 1338 } 1339 1340 static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 1341 { 1342 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1343 1344 mwifiex_usb_cleanup_tx_aggr(adapter); 1345 1346 card->adapter = NULL; 1347 } 1348 1349 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 1350 struct mwifiex_fw_image *fw) 1351 { 1352 int ret = 0; 1353 u8 *firmware = fw->fw_buf, *recv_buff; 1354 u32 retries = USB8XXX_FW_MAX_RETRY + 1; 1355 u32 dlen; 1356 u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; 1357 struct fw_data *fwdata; 1358 struct fw_sync_header sync_fw; 1359 u8 check_winner = 1; 1360 1361 if (!firmware) { 1362 mwifiex_dbg(adapter, ERROR, 1363 "No firmware image found! Terminating download\n"); 1364 ret = -1; 1365 goto fw_exit; 1366 } 1367 1368 /* Allocate memory for transmit */ 1369 fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); 1370 if (!fwdata) { 1371 ret = -ENOMEM; 1372 goto fw_exit; 1373 } 1374 1375 /* Allocate memory for receive */ 1376 recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); 1377 if (!recv_buff) { 1378 ret = -ENOMEM; 1379 goto cleanup; 1380 } 1381 1382 do { 1383 /* Send pseudo data to check winner status first */ 1384 if (check_winner) { 1385 memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); 1386 dlen = 0; 1387 } else { 1388 /* copy the header of the fw_data to get the length */ 1389 memcpy(&fwdata->fw_hdr, &firmware[tlen], 1390 sizeof(struct fw_header)); 1391 1392 dlen = le32_to_cpu(fwdata->fw_hdr.data_len); 1393 dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); 1394 tlen += sizeof(struct fw_header); 1395 1396 /* Command 7 doesn't have data length field */ 1397 if (dnld_cmd == FW_CMD_7) 1398 dlen = 0; 1399 1400 memcpy(fwdata->data, &firmware[tlen], dlen); 1401 1402 fwdata->seq_num = cpu_to_le32(fw_seqnum); 1403 tlen += dlen; 1404 } 1405 1406 /* If the send/receive fails or CRC occurs then retry */ 1407 while (--retries) { 1408 u8 *buf = (u8 *)fwdata; 1409 u32 len = FW_DATA_XMIT_SIZE; 1410 1411 /* send the firmware block */ 1412 ret = mwifiex_write_data_sync(adapter, buf, &len, 1413 MWIFIEX_USB_EP_CMD_EVENT, 1414 MWIFIEX_USB_TIMEOUT); 1415 if (ret) { 1416 mwifiex_dbg(adapter, ERROR, 1417 "write_data_sync: failed: %d\n", 1418 ret); 1419 continue; 1420 } 1421 1422 buf = recv_buff; 1423 len = FW_DNLD_RX_BUF_SIZE; 1424 1425 /* Receive the firmware block response */ 1426 ret = mwifiex_read_data_sync(adapter, buf, &len, 1427 MWIFIEX_USB_EP_CMD_EVENT, 1428 MWIFIEX_USB_TIMEOUT); 1429 if (ret) { 1430 mwifiex_dbg(adapter, ERROR, 1431 "read_data_sync: failed: %d\n", 1432 ret); 1433 continue; 1434 } 1435 1436 memcpy(&sync_fw, recv_buff, 1437 sizeof(struct fw_sync_header)); 1438 1439 /* check 1st firmware block resp for highest bit set */ 1440 if (check_winner) { 1441 if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { 1442 mwifiex_dbg(adapter, WARN, 1443 "USB is not the winner %#x\n", 1444 sync_fw.cmd); 1445 1446 /* returning success */ 1447 ret = 0; 1448 goto cleanup; 1449 } 1450 1451 mwifiex_dbg(adapter, MSG, 1452 "start to download FW...\n"); 1453 1454 check_winner = 0; 1455 break; 1456 } 1457 1458 /* check the firmware block response for CRC errors */ 1459 if (sync_fw.cmd) { 1460 mwifiex_dbg(adapter, ERROR, 1461 "FW received block with CRC %#x\n", 1462 sync_fw.cmd); 1463 ret = -1; 1464 continue; 1465 } 1466 1467 retries = USB8XXX_FW_MAX_RETRY + 1; 1468 break; 1469 } 1470 fw_seqnum++; 1471 } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); 1472 1473 cleanup: 1474 mwifiex_dbg(adapter, MSG, 1475 "info: FW download over, size %d bytes\n", tlen); 1476 1477 kfree(recv_buff); 1478 kfree(fwdata); 1479 1480 if (retries) 1481 ret = 0; 1482 fw_exit: 1483 return ret; 1484 } 1485 1486 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, 1487 struct mwifiex_fw_image *fw) 1488 { 1489 int ret; 1490 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1491 1492 if (card->usb_boot_state == USB8XXX_FW_DNLD) { 1493 ret = mwifiex_prog_fw_w_helper(adapter, fw); 1494 if (ret) 1495 return -1; 1496 1497 /* Boot state changes after successful firmware download */ 1498 if (card->usb_boot_state == USB8XXX_FW_DNLD) 1499 return -1; 1500 } 1501 1502 ret = mwifiex_usb_rx_init(adapter); 1503 if (!ret) 1504 ret = mwifiex_usb_tx_init(adapter); 1505 1506 return ret; 1507 } 1508 1509 static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) 1510 { 1511 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1512 1513 skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); 1514 if ((ep == card->rx_cmd_ep) && 1515 (!atomic_read(&card->rx_cmd_urb_pending))) 1516 mwifiex_usb_submit_rx_urb(&card->rx_cmd, 1517 MWIFIEX_RX_CMD_BUF_SIZE); 1518 1519 return; 1520 } 1521 1522 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, 1523 struct sk_buff *skb) 1524 { 1525 mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); 1526 1527 return 0; 1528 } 1529 1530 /* This function wakes up the card. */ 1531 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 1532 { 1533 /* Simulation of HS_AWAKE event */ 1534 adapter->pm_wakeup_fw_try = false; 1535 del_timer(&adapter->wakeup_timer); 1536 adapter->pm_wakeup_card_req = false; 1537 adapter->ps_state = PS_STATE_AWAKE; 1538 1539 return 0; 1540 } 1541 1542 static void mwifiex_usb_submit_rem_rx_urbs(struct mwifiex_adapter *adapter) 1543 { 1544 struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; 1545 int i; 1546 struct urb_context *ctx; 1547 1548 for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { 1549 if (card->rx_data_list[i].skb) 1550 continue; 1551 ctx = &card->rx_data_list[i]; 1552 mwifiex_usb_submit_rx_urb(ctx, MWIFIEX_RX_DATA_BUF_SIZE); 1553 } 1554 } 1555 1556 /* This function is called after the card has woken up. */ 1557 static inline int 1558 mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 1559 { 1560 return 0; 1561 } 1562 1563 static struct mwifiex_if_ops usb_ops = { 1564 .register_dev = mwifiex_register_dev, 1565 .unregister_dev = mwifiex_unregister_dev, 1566 .wakeup = mwifiex_pm_wakeup_card, 1567 .wakeup_complete = mwifiex_pm_wakeup_card_complete, 1568 1569 /* USB specific */ 1570 .dnld_fw = mwifiex_usb_dnld_fw, 1571 .cmdrsp_complete = mwifiex_usb_cmd_event_complete, 1572 .event_complete = mwifiex_usb_cmd_event_complete, 1573 .host_to_card = mwifiex_usb_host_to_card, 1574 .submit_rem_rx_urbs = mwifiex_usb_submit_rem_rx_urbs, 1575 .multi_port_resync = mwifiex_usb_port_resync, 1576 .is_port_ready = mwifiex_usb_is_port_ready, 1577 }; 1578 1579 module_usb_driver(mwifiex_usb_driver); 1580 1581 MODULE_AUTHOR("Marvell International Ltd."); 1582 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); 1583 MODULE_VERSION(USB_VERSION); 1584 MODULE_LICENSE("GPL v2"); 1585 MODULE_FIRMWARE(USB8766_DEFAULT_FW_NAME); 1586 MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); 1587 MODULE_FIRMWARE(USB8801_DEFAULT_FW_NAME); 1588 MODULE_FIRMWARE(USB8997_DEFAULT_FW_NAME); 1589