1 /* 2 * Copyright (c) 2011 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/module.h> 19 #include <linux/firmware.h> 20 #include <linux/usb.h> 21 #include <linux/vmalloc.h> 22 23 #include <brcmu_utils.h> 24 #include <brcm_hw_ids.h> 25 #include <brcmu_wifi.h> 26 #include "bus.h" 27 #include "debug.h" 28 #include "firmware.h" 29 #include "usb.h" 30 31 32 #define IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000) 33 34 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */ 35 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10 36 37 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle 38 has boot up */ 39 #define BRCMF_USB_NRXQ 50 40 #define BRCMF_USB_NTXQ 50 41 42 #define BRCMF_USB_CBCTL_WRITE 0 43 #define BRCMF_USB_CBCTL_READ 1 44 #define BRCMF_USB_MAX_PKT_SIZE 1600 45 46 BRCMF_FW_DEF(43143, "brcmfmac43143.bin"); 47 BRCMF_FW_DEF(43236B, "brcmfmac43236b.bin"); 48 BRCMF_FW_DEF(43242A, "brcmfmac43242a.bin"); 49 BRCMF_FW_DEF(43569, "brcmfmac43569.bin"); 50 51 static struct brcmf_firmware_mapping brcmf_usb_fwnames[] = { 52 BRCMF_FW_ENTRY(BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, 43143), 53 BRCMF_FW_ENTRY(BRCM_CC_43235_CHIP_ID, 0x00000008, 43236B), 54 BRCMF_FW_ENTRY(BRCM_CC_43236_CHIP_ID, 0x00000008, 43236B), 55 BRCMF_FW_ENTRY(BRCM_CC_43238_CHIP_ID, 0x00000008, 43236B), 56 BRCMF_FW_ENTRY(BRCM_CC_43242_CHIP_ID, 0xFFFFFFFF, 43242A), 57 BRCMF_FW_ENTRY(BRCM_CC_43566_CHIP_ID, 0xFFFFFFFF, 43569), 58 BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43569) 59 }; 60 61 #define TRX_MAGIC 0x30524448 /* "HDR0" */ 62 #define TRX_MAX_OFFSET 3 /* Max number of file offsets */ 63 #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */ 64 #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */ 65 #define TRX_OFFSETS_DLFWLEN_IDX 0 66 67 /* Control messages: bRequest values */ 68 #define DL_GETSTATE 0 /* returns the rdl_state_t struct */ 69 #define DL_CHECK_CRC 1 /* currently unused */ 70 #define DL_GO 2 /* execute downloaded image */ 71 #define DL_START 3 /* initialize dl state */ 72 #define DL_REBOOT 4 /* reboot the device in 2 seconds */ 73 #define DL_GETVER 5 /* returns the bootrom_id_t struct */ 74 #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset 75 * event to occur in 2 seconds. It is the 76 * responsibility of the downloaded code to 77 * clear this event 78 */ 79 #define DL_EXEC 7 /* jump to a supplied address */ 80 #define DL_RESETCFG 8 /* To support single enum on dongle 81 * - Not used by bootloader 82 */ 83 #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup 84 * if resp unavailable 85 */ 86 87 /* states */ 88 #define DL_WAITING 0 /* waiting to rx first pkt */ 89 #define DL_READY 1 /* hdr was good, waiting for more of the 90 * compressed image 91 */ 92 #define DL_BAD_HDR 2 /* hdr was corrupted */ 93 #define DL_BAD_CRC 3 /* compressed image was corrupted */ 94 #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ 95 #define DL_START_FAIL 5 /* failed to initialize correctly */ 96 #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM 97 * value 98 */ 99 #define DL_IMAGE_TOOBIG 7 /* firmware image too big */ 100 101 102 struct trx_header_le { 103 __le32 magic; /* "HDR0" */ 104 __le32 len; /* Length of file including header */ 105 __le32 crc32; /* CRC from flag_version to end of file */ 106 __le32 flag_version; /* 0:15 flags, 16:31 version */ 107 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of 108 * header 109 */ 110 }; 111 112 struct rdl_state_le { 113 __le32 state; 114 __le32 bytes; 115 }; 116 117 struct bootrom_id_le { 118 __le32 chip; /* Chip id */ 119 __le32 chiprev; /* Chip rev */ 120 __le32 ramsize; /* Size of RAM */ 121 __le32 remapbase; /* Current remap base address */ 122 __le32 boardtype; /* Type of board */ 123 __le32 boardrev; /* Board revision */ 124 }; 125 126 struct brcmf_usb_image { 127 struct list_head list; 128 s8 *fwname; 129 u8 *image; 130 int image_len; 131 }; 132 133 struct brcmf_usbdev_info { 134 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ 135 spinlock_t qlock; 136 struct list_head rx_freeq; 137 struct list_head rx_postq; 138 struct list_head tx_freeq; 139 struct list_head tx_postq; 140 uint rx_pipe, tx_pipe; 141 142 int rx_low_watermark; 143 int tx_low_watermark; 144 int tx_high_watermark; 145 int tx_freecount; 146 bool tx_flowblock; 147 spinlock_t tx_flowblock_lock; 148 149 struct brcmf_usbreq *tx_reqs; 150 struct brcmf_usbreq *rx_reqs; 151 152 char fw_name[BRCMF_FW_NAME_LEN]; 153 const u8 *image; /* buffer for combine fw and nvram */ 154 int image_len; 155 156 struct usb_device *usbdev; 157 struct device *dev; 158 struct mutex dev_init_lock; 159 160 int ctl_in_pipe, ctl_out_pipe; 161 struct urb *ctl_urb; /* URB for control endpoint */ 162 struct usb_ctrlrequest ctl_write; 163 struct usb_ctrlrequest ctl_read; 164 u32 ctl_urb_actual_length; 165 int ctl_urb_status; 166 int ctl_completed; 167 wait_queue_head_t ioctl_resp_wait; 168 ulong ctl_op; 169 u8 ifnum; 170 171 struct urb *bulk_urb; /* used for FW download */ 172 173 bool wowl_enabled; 174 }; 175 176 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 177 struct brcmf_usbreq *req); 178 179 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 180 { 181 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 182 return bus_if->bus_priv.usb; 183 } 184 185 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 186 { 187 return brcmf_usb_get_buspub(dev)->devinfo; 188 } 189 190 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 191 { 192 return wait_event_timeout(devinfo->ioctl_resp_wait, 193 devinfo->ctl_completed, IOCTL_RESP_TIMEOUT); 194 } 195 196 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 197 { 198 wake_up(&devinfo->ioctl_resp_wait); 199 } 200 201 static void 202 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 203 { 204 brcmf_dbg(USB, "Enter, status=%d\n", status); 205 206 if (unlikely(devinfo == NULL)) 207 return; 208 209 if (type == BRCMF_USB_CBCTL_READ) { 210 if (status == 0) 211 devinfo->bus_pub.stats.rx_ctlpkts++; 212 else 213 devinfo->bus_pub.stats.rx_ctlerrs++; 214 } else if (type == BRCMF_USB_CBCTL_WRITE) { 215 if (status == 0) 216 devinfo->bus_pub.stats.tx_ctlpkts++; 217 else 218 devinfo->bus_pub.stats.tx_ctlerrs++; 219 } 220 221 devinfo->ctl_urb_status = status; 222 devinfo->ctl_completed = true; 223 brcmf_usb_ioctl_resp_wake(devinfo); 224 } 225 226 static void 227 brcmf_usb_ctlread_complete(struct urb *urb) 228 { 229 struct brcmf_usbdev_info *devinfo = 230 (struct brcmf_usbdev_info *)urb->context; 231 232 brcmf_dbg(USB, "Enter\n"); 233 devinfo->ctl_urb_actual_length = urb->actual_length; 234 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 235 urb->status); 236 } 237 238 static void 239 brcmf_usb_ctlwrite_complete(struct urb *urb) 240 { 241 struct brcmf_usbdev_info *devinfo = 242 (struct brcmf_usbdev_info *)urb->context; 243 244 brcmf_dbg(USB, "Enter\n"); 245 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 246 urb->status); 247 } 248 249 static int 250 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 251 { 252 int ret; 253 u16 size; 254 255 brcmf_dbg(USB, "Enter\n"); 256 if (devinfo == NULL || buf == NULL || 257 len == 0 || devinfo->ctl_urb == NULL) 258 return -EINVAL; 259 260 size = len; 261 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 262 devinfo->ctl_urb->transfer_buffer_length = size; 263 devinfo->ctl_urb_status = 0; 264 devinfo->ctl_urb_actual_length = 0; 265 266 usb_fill_control_urb(devinfo->ctl_urb, 267 devinfo->usbdev, 268 devinfo->ctl_out_pipe, 269 (unsigned char *) &devinfo->ctl_write, 270 buf, size, 271 (usb_complete_t)brcmf_usb_ctlwrite_complete, 272 devinfo); 273 274 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 275 if (ret < 0) 276 brcmf_err("usb_submit_urb failed %d\n", ret); 277 278 return ret; 279 } 280 281 static int 282 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 283 { 284 int ret; 285 u16 size; 286 287 brcmf_dbg(USB, "Enter\n"); 288 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 289 || (devinfo->ctl_urb == NULL)) 290 return -EINVAL; 291 292 size = len; 293 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 294 devinfo->ctl_urb->transfer_buffer_length = size; 295 296 devinfo->ctl_read.bRequestType = USB_DIR_IN 297 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 298 devinfo->ctl_read.bRequest = 1; 299 300 usb_fill_control_urb(devinfo->ctl_urb, 301 devinfo->usbdev, 302 devinfo->ctl_in_pipe, 303 (unsigned char *) &devinfo->ctl_read, 304 buf, size, 305 (usb_complete_t)brcmf_usb_ctlread_complete, 306 devinfo); 307 308 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 309 if (ret < 0) 310 brcmf_err("usb_submit_urb failed %d\n", ret); 311 312 return ret; 313 } 314 315 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 316 { 317 int err = 0; 318 int timeout = 0; 319 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 320 321 brcmf_dbg(USB, "Enter\n"); 322 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 323 return -EIO; 324 325 if (test_and_set_bit(0, &devinfo->ctl_op)) 326 return -EIO; 327 328 devinfo->ctl_completed = false; 329 err = brcmf_usb_send_ctl(devinfo, buf, len); 330 if (err) { 331 brcmf_err("fail %d bytes: %d\n", err, len); 332 clear_bit(0, &devinfo->ctl_op); 333 return err; 334 } 335 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 336 clear_bit(0, &devinfo->ctl_op); 337 if (!timeout) { 338 brcmf_err("Txctl wait timed out\n"); 339 err = -EIO; 340 } 341 return err; 342 } 343 344 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 345 { 346 int err = 0; 347 int timeout = 0; 348 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 349 350 brcmf_dbg(USB, "Enter\n"); 351 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 352 return -EIO; 353 354 if (test_and_set_bit(0, &devinfo->ctl_op)) 355 return -EIO; 356 357 devinfo->ctl_completed = false; 358 err = brcmf_usb_recv_ctl(devinfo, buf, len); 359 if (err) { 360 brcmf_err("fail %d bytes: %d\n", err, len); 361 clear_bit(0, &devinfo->ctl_op); 362 return err; 363 } 364 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 365 err = devinfo->ctl_urb_status; 366 clear_bit(0, &devinfo->ctl_op); 367 if (!timeout) { 368 brcmf_err("rxctl wait timed out\n"); 369 err = -EIO; 370 } 371 if (!err) 372 return devinfo->ctl_urb_actual_length; 373 else 374 return err; 375 } 376 377 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 378 struct list_head *q, int *counter) 379 { 380 unsigned long flags; 381 struct brcmf_usbreq *req; 382 spin_lock_irqsave(&devinfo->qlock, flags); 383 if (list_empty(q)) { 384 spin_unlock_irqrestore(&devinfo->qlock, flags); 385 return NULL; 386 } 387 req = list_entry(q->next, struct brcmf_usbreq, list); 388 list_del_init(q->next); 389 if (counter) 390 (*counter)--; 391 spin_unlock_irqrestore(&devinfo->qlock, flags); 392 return req; 393 394 } 395 396 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 397 struct list_head *q, struct brcmf_usbreq *req, 398 int *counter) 399 { 400 unsigned long flags; 401 spin_lock_irqsave(&devinfo->qlock, flags); 402 list_add_tail(&req->list, q); 403 if (counter) 404 (*counter)++; 405 spin_unlock_irqrestore(&devinfo->qlock, flags); 406 } 407 408 static struct brcmf_usbreq * 409 brcmf_usbdev_qinit(struct list_head *q, int qsize) 410 { 411 int i; 412 struct brcmf_usbreq *req, *reqs; 413 414 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 415 if (reqs == NULL) 416 return NULL; 417 418 req = reqs; 419 420 for (i = 0; i < qsize; i++) { 421 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 422 if (!req->urb) 423 goto fail; 424 425 INIT_LIST_HEAD(&req->list); 426 list_add_tail(&req->list, q); 427 req++; 428 } 429 return reqs; 430 fail: 431 brcmf_err("fail!\n"); 432 while (!list_empty(q)) { 433 req = list_entry(q->next, struct brcmf_usbreq, list); 434 if (req) 435 usb_free_urb(req->urb); 436 list_del(q->next); 437 } 438 return NULL; 439 440 } 441 442 static void brcmf_usb_free_q(struct list_head *q, bool pending) 443 { 444 struct brcmf_usbreq *req, *next; 445 int i = 0; 446 list_for_each_entry_safe(req, next, q, list) { 447 if (!req->urb) { 448 brcmf_err("bad req\n"); 449 break; 450 } 451 i++; 452 if (pending) { 453 usb_kill_urb(req->urb); 454 } else { 455 usb_free_urb(req->urb); 456 list_del_init(&req->list); 457 } 458 } 459 } 460 461 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 462 struct brcmf_usbreq *req) 463 { 464 unsigned long flags; 465 466 spin_lock_irqsave(&devinfo->qlock, flags); 467 list_del_init(&req->list); 468 spin_unlock_irqrestore(&devinfo->qlock, flags); 469 } 470 471 472 static void brcmf_usb_tx_complete(struct urb *urb) 473 { 474 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 475 struct brcmf_usbdev_info *devinfo = req->devinfo; 476 unsigned long flags; 477 478 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 479 req->skb); 480 brcmf_usb_del_fromq(devinfo, req); 481 482 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0); 483 req->skb = NULL; 484 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 485 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 486 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 487 devinfo->tx_flowblock) { 488 brcmf_txflowblock(devinfo->dev, false); 489 devinfo->tx_flowblock = false; 490 } 491 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 492 } 493 494 static void brcmf_usb_rx_complete(struct urb *urb) 495 { 496 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 497 struct brcmf_usbdev_info *devinfo = req->devinfo; 498 struct sk_buff *skb; 499 500 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 501 brcmf_usb_del_fromq(devinfo, req); 502 skb = req->skb; 503 req->skb = NULL; 504 505 /* zero lenght packets indicate usb "failure". Do not refill */ 506 if (urb->status != 0 || !urb->actual_length) { 507 brcmu_pkt_buf_free_skb(skb); 508 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 509 return; 510 } 511 512 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { 513 skb_put(skb, urb->actual_length); 514 brcmf_rx_frame(devinfo->dev, skb); 515 brcmf_usb_rx_refill(devinfo, req); 516 } else { 517 brcmu_pkt_buf_free_skb(skb); 518 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 519 } 520 return; 521 522 } 523 524 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 525 struct brcmf_usbreq *req) 526 { 527 struct sk_buff *skb; 528 int ret; 529 530 if (!req || !devinfo) 531 return; 532 533 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 534 if (!skb) { 535 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 536 return; 537 } 538 req->skb = skb; 539 540 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 541 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 542 req); 543 req->devinfo = devinfo; 544 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 545 546 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 547 if (ret) { 548 brcmf_usb_del_fromq(devinfo, req); 549 brcmu_pkt_buf_free_skb(req->skb); 550 req->skb = NULL; 551 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 552 } 553 return; 554 } 555 556 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 557 { 558 struct brcmf_usbreq *req; 559 560 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 561 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 562 return; 563 } 564 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 565 brcmf_usb_rx_refill(devinfo, req); 566 } 567 568 static void 569 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 570 { 571 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 572 int old_state; 573 574 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 575 devinfo->bus_pub.state, state); 576 577 if (devinfo->bus_pub.state == state) 578 return; 579 580 old_state = devinfo->bus_pub.state; 581 devinfo->bus_pub.state = state; 582 583 /* update state of upper layer */ 584 if (state == BRCMFMAC_USB_STATE_DOWN) { 585 brcmf_dbg(USB, "DBUS is down\n"); 586 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 587 } else if (state == BRCMFMAC_USB_STATE_UP) { 588 brcmf_dbg(USB, "DBUS is up\n"); 589 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 590 } else { 591 brcmf_dbg(USB, "DBUS current state=%d\n", state); 592 } 593 } 594 595 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 596 { 597 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 598 struct brcmf_usbreq *req; 599 int ret; 600 unsigned long flags; 601 602 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 603 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 604 ret = -EIO; 605 goto fail; 606 } 607 608 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 609 &devinfo->tx_freecount); 610 if (!req) { 611 brcmf_err("no req to send\n"); 612 ret = -ENOMEM; 613 goto fail; 614 } 615 616 req->skb = skb; 617 req->devinfo = devinfo; 618 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 619 skb->data, skb->len, brcmf_usb_tx_complete, req); 620 req->urb->transfer_flags |= URB_ZERO_PACKET; 621 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 622 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 623 if (ret) { 624 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 625 brcmf_usb_del_fromq(devinfo, req); 626 req->skb = NULL; 627 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 628 &devinfo->tx_freecount); 629 goto fail; 630 } 631 632 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 633 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 634 !devinfo->tx_flowblock) { 635 brcmf_txflowblock(dev, true); 636 devinfo->tx_flowblock = true; 637 } 638 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 639 return 0; 640 641 fail: 642 return ret; 643 } 644 645 646 static int brcmf_usb_up(struct device *dev) 647 { 648 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 649 650 brcmf_dbg(USB, "Enter\n"); 651 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 652 return 0; 653 654 /* Success, indicate devinfo is fully up */ 655 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 656 657 if (devinfo->ctl_urb) { 658 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 659 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 660 661 /* CTL Write */ 662 devinfo->ctl_write.bRequestType = 663 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 664 devinfo->ctl_write.bRequest = 0; 665 devinfo->ctl_write.wValue = cpu_to_le16(0); 666 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 667 668 /* CTL Read */ 669 devinfo->ctl_read.bRequestType = 670 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 671 devinfo->ctl_read.bRequest = 1; 672 devinfo->ctl_read.wValue = cpu_to_le16(0); 673 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 674 } 675 brcmf_usb_rx_fill_all(devinfo); 676 return 0; 677 } 678 679 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 680 { 681 if (devinfo->ctl_urb) 682 usb_kill_urb(devinfo->ctl_urb); 683 if (devinfo->bulk_urb) 684 usb_kill_urb(devinfo->bulk_urb); 685 brcmf_usb_free_q(&devinfo->tx_postq, true); 686 brcmf_usb_free_q(&devinfo->rx_postq, true); 687 } 688 689 static void brcmf_usb_down(struct device *dev) 690 { 691 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 692 693 brcmf_dbg(USB, "Enter\n"); 694 if (devinfo == NULL) 695 return; 696 697 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 698 return; 699 700 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 701 702 brcmf_cancel_all_urbs(devinfo); 703 } 704 705 static void 706 brcmf_usb_sync_complete(struct urb *urb) 707 { 708 struct brcmf_usbdev_info *devinfo = 709 (struct brcmf_usbdev_info *)urb->context; 710 711 devinfo->ctl_completed = true; 712 brcmf_usb_ioctl_resp_wake(devinfo); 713 } 714 715 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 716 void *buffer, int buflen) 717 { 718 int ret; 719 char *tmpbuf; 720 u16 size; 721 722 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 723 return -EINVAL; 724 725 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 726 if (!tmpbuf) 727 return -ENOMEM; 728 729 size = buflen; 730 devinfo->ctl_urb->transfer_buffer_length = size; 731 732 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 733 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 734 USB_RECIP_INTERFACE; 735 devinfo->ctl_read.bRequest = cmd; 736 737 usb_fill_control_urb(devinfo->ctl_urb, 738 devinfo->usbdev, 739 usb_rcvctrlpipe(devinfo->usbdev, 0), 740 (unsigned char *) &devinfo->ctl_read, 741 (void *) tmpbuf, size, 742 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 743 744 devinfo->ctl_completed = false; 745 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 746 if (ret < 0) { 747 brcmf_err("usb_submit_urb failed %d\n", ret); 748 goto finalize; 749 } 750 751 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 752 usb_kill_urb(devinfo->ctl_urb); 753 ret = -ETIMEDOUT; 754 } else { 755 memcpy(buffer, tmpbuf, buflen); 756 } 757 758 finalize: 759 kfree(tmpbuf); 760 return ret; 761 } 762 763 static bool 764 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 765 { 766 struct bootrom_id_le id; 767 u32 chipid, chiprev; 768 769 brcmf_dbg(USB, "Enter\n"); 770 771 if (devinfo == NULL) 772 return false; 773 774 /* Check if firmware downloaded already by querying runtime ID */ 775 id.chip = cpu_to_le32(0xDEAD); 776 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 777 778 chipid = le32_to_cpu(id.chip); 779 chiprev = le32_to_cpu(id.chiprev); 780 781 if ((chipid & 0x4300) == 0x4300) 782 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 783 else 784 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 785 if (chipid == BRCMF_POSTBOOT_ID) { 786 brcmf_dbg(USB, "firmware already downloaded\n"); 787 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 788 return false; 789 } else { 790 devinfo->bus_pub.devid = chipid; 791 devinfo->bus_pub.chiprev = chiprev; 792 } 793 return true; 794 } 795 796 static int 797 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 798 { 799 struct bootrom_id_le id; 800 u32 loop_cnt; 801 int err; 802 803 brcmf_dbg(USB, "Enter\n"); 804 805 loop_cnt = 0; 806 do { 807 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 808 loop_cnt++; 809 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 810 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 811 if ((err) && (err != -ETIMEDOUT)) 812 return err; 813 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 814 break; 815 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 816 817 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 818 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 819 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 820 821 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 822 return 0; 823 } else { 824 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 825 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 826 return -EINVAL; 827 } 828 } 829 830 831 static int 832 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 833 { 834 int ret; 835 836 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 837 return -EINVAL; 838 839 /* Prepare the URB */ 840 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 841 devinfo->tx_pipe, buffer, len, 842 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 843 844 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 845 846 devinfo->ctl_completed = false; 847 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 848 if (ret) { 849 brcmf_err("usb_submit_urb failed %d\n", ret); 850 return ret; 851 } 852 ret = brcmf_usb_ioctl_resp_wait(devinfo); 853 return (ret == 0); 854 } 855 856 static int 857 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 858 { 859 unsigned int sendlen, sent, dllen; 860 char *bulkchunk = NULL, *dlpos; 861 struct rdl_state_le state; 862 u32 rdlstate, rdlbytes; 863 int err = 0; 864 865 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 866 867 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 868 if (bulkchunk == NULL) { 869 err = -ENOMEM; 870 goto fail; 871 } 872 873 /* 1) Prepare USB boot loader for runtime image */ 874 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 875 876 rdlstate = le32_to_cpu(state.state); 877 rdlbytes = le32_to_cpu(state.bytes); 878 879 /* 2) Check we are in the Waiting state */ 880 if (rdlstate != DL_WAITING) { 881 brcmf_err("Failed to DL_START\n"); 882 err = -EINVAL; 883 goto fail; 884 } 885 sent = 0; 886 dlpos = fw; 887 dllen = fwlen; 888 889 /* Get chip id and rev */ 890 while (rdlbytes != dllen) { 891 /* Wait until the usb device reports it received all 892 * the bytes we sent */ 893 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 894 if ((dllen-sent) < TRX_RDL_CHUNK) 895 sendlen = dllen-sent; 896 else 897 sendlen = TRX_RDL_CHUNK; 898 899 /* simply avoid having to send a ZLP by ensuring we 900 * never have an even 901 * multiple of 64 902 */ 903 if (!(sendlen % 64)) 904 sendlen -= 4; 905 906 /* send data */ 907 memcpy(bulkchunk, dlpos, sendlen); 908 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 909 sendlen)) { 910 brcmf_err("send_bulk failed\n"); 911 err = -EINVAL; 912 goto fail; 913 } 914 915 dlpos += sendlen; 916 sent += sendlen; 917 } 918 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 919 sizeof(state)); 920 if (err) { 921 brcmf_err("DL_GETSTATE Failed\n"); 922 goto fail; 923 } 924 925 rdlstate = le32_to_cpu(state.state); 926 rdlbytes = le32_to_cpu(state.bytes); 927 928 /* restart if an error is reported */ 929 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 930 brcmf_err("Bad Hdr or Bad CRC state %d\n", 931 rdlstate); 932 err = -EINVAL; 933 goto fail; 934 } 935 } 936 937 fail: 938 kfree(bulkchunk); 939 brcmf_dbg(USB, "Exit, err=%d\n", err); 940 return err; 941 } 942 943 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 944 { 945 int err; 946 947 brcmf_dbg(USB, "Enter\n"); 948 949 if (devinfo == NULL) 950 return -EINVAL; 951 952 if (devinfo->bus_pub.devid == 0xDEAD) 953 return -EINVAL; 954 955 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 956 if (err == 0) 957 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 958 else 959 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 960 brcmf_dbg(USB, "Exit, err=%d\n", err); 961 962 return err; 963 } 964 965 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 966 { 967 struct rdl_state_le state; 968 969 brcmf_dbg(USB, "Enter\n"); 970 if (!devinfo) 971 return -EINVAL; 972 973 if (devinfo->bus_pub.devid == 0xDEAD) 974 return -EINVAL; 975 976 /* Check we are runnable */ 977 state.state = 0; 978 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 979 980 /* Start the image */ 981 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 982 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 983 return -ENODEV; 984 if (brcmf_usb_resetcfg(devinfo)) 985 return -ENODEV; 986 /* The Dongle may go for re-enumeration. */ 987 } else { 988 brcmf_err("Dongle not runnable\n"); 989 return -EINVAL; 990 } 991 brcmf_dbg(USB, "Exit\n"); 992 return 0; 993 } 994 995 static int 996 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 997 { 998 int err; 999 1000 brcmf_dbg(USB, "Enter\n"); 1001 if (devinfo == NULL) 1002 return -ENODEV; 1003 1004 if (!devinfo->image) { 1005 brcmf_err("No firmware!\n"); 1006 return -ENOENT; 1007 } 1008 1009 err = brcmf_usb_dlstart(devinfo, 1010 (u8 *)devinfo->image, devinfo->image_len); 1011 if (err == 0) 1012 err = brcmf_usb_dlrun(devinfo); 1013 return err; 1014 } 1015 1016 1017 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1018 { 1019 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1020 1021 /* free the URBS */ 1022 brcmf_usb_free_q(&devinfo->rx_freeq, false); 1023 brcmf_usb_free_q(&devinfo->tx_freeq, false); 1024 1025 usb_free_urb(devinfo->ctl_urb); 1026 usb_free_urb(devinfo->bulk_urb); 1027 1028 kfree(devinfo->tx_reqs); 1029 kfree(devinfo->rx_reqs); 1030 } 1031 1032 1033 static int check_file(const u8 *headers) 1034 { 1035 struct trx_header_le *trx; 1036 int actual_len = -1; 1037 1038 brcmf_dbg(USB, "Enter\n"); 1039 /* Extract trx header */ 1040 trx = (struct trx_header_le *) headers; 1041 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1042 return -1; 1043 1044 headers += sizeof(struct trx_header_le); 1045 1046 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1047 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1048 return actual_len + sizeof(struct trx_header_le); 1049 } 1050 return -1; 1051 } 1052 1053 1054 static 1055 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1056 int nrxq, int ntxq) 1057 { 1058 brcmf_dbg(USB, "Enter\n"); 1059 1060 devinfo->bus_pub.nrxq = nrxq; 1061 devinfo->rx_low_watermark = nrxq / 2; 1062 devinfo->bus_pub.devinfo = devinfo; 1063 devinfo->bus_pub.ntxq = ntxq; 1064 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1065 1066 /* flow control when too many tx urbs posted */ 1067 devinfo->tx_low_watermark = ntxq / 4; 1068 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1069 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1070 1071 /* Initialize other structure content */ 1072 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1073 1074 /* Initialize the spinlocks */ 1075 spin_lock_init(&devinfo->qlock); 1076 spin_lock_init(&devinfo->tx_flowblock_lock); 1077 1078 INIT_LIST_HEAD(&devinfo->rx_freeq); 1079 INIT_LIST_HEAD(&devinfo->rx_postq); 1080 1081 INIT_LIST_HEAD(&devinfo->tx_freeq); 1082 INIT_LIST_HEAD(&devinfo->tx_postq); 1083 1084 devinfo->tx_flowblock = false; 1085 1086 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1087 if (!devinfo->rx_reqs) 1088 goto error; 1089 1090 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1091 if (!devinfo->tx_reqs) 1092 goto error; 1093 devinfo->tx_freecount = ntxq; 1094 1095 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1096 if (!devinfo->ctl_urb) { 1097 brcmf_err("usb_alloc_urb (ctl) failed\n"); 1098 goto error; 1099 } 1100 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1101 if (!devinfo->bulk_urb) { 1102 brcmf_err("usb_alloc_urb (bulk) failed\n"); 1103 goto error; 1104 } 1105 1106 return &devinfo->bus_pub; 1107 1108 error: 1109 brcmf_err("failed!\n"); 1110 brcmf_usb_detach(devinfo); 1111 return NULL; 1112 } 1113 1114 static void brcmf_usb_wowl_config(struct device *dev, bool enabled) 1115 { 1116 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 1117 1118 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); 1119 devinfo->wowl_enabled = enabled; 1120 if (enabled) 1121 device_set_wakeup_enable(devinfo->dev, true); 1122 else 1123 device_set_wakeup_enable(devinfo->dev, false); 1124 } 1125 1126 static const struct brcmf_bus_ops brcmf_usb_bus_ops = { 1127 .txdata = brcmf_usb_tx, 1128 .stop = brcmf_usb_down, 1129 .txctl = brcmf_usb_tx_ctlpkt, 1130 .rxctl = brcmf_usb_rx_ctlpkt, 1131 .wowl_config = brcmf_usb_wowl_config, 1132 }; 1133 1134 static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo) 1135 { 1136 int ret; 1137 1138 /* Attach to the common driver interface */ 1139 ret = brcmf_attach(devinfo->dev); 1140 if (ret) { 1141 brcmf_err("brcmf_attach failed\n"); 1142 return ret; 1143 } 1144 1145 ret = brcmf_usb_up(devinfo->dev); 1146 if (ret) 1147 goto fail; 1148 1149 ret = brcmf_bus_start(devinfo->dev); 1150 if (ret) 1151 goto fail; 1152 1153 return 0; 1154 fail: 1155 brcmf_detach(devinfo->dev); 1156 return ret; 1157 } 1158 1159 static void brcmf_usb_probe_phase2(struct device *dev, 1160 const struct firmware *fw, 1161 void *nvram, u32 nvlen) 1162 { 1163 struct brcmf_bus *bus = dev_get_drvdata(dev); 1164 struct brcmf_usbdev_info *devinfo; 1165 int ret; 1166 1167 brcmf_dbg(USB, "Start fw downloading\n"); 1168 1169 devinfo = bus->bus_priv.usb->devinfo; 1170 ret = check_file(fw->data); 1171 if (ret < 0) { 1172 brcmf_err("invalid firmware\n"); 1173 release_firmware(fw); 1174 goto error; 1175 } 1176 1177 devinfo->image = fw->data; 1178 devinfo->image_len = fw->size; 1179 1180 ret = brcmf_usb_fw_download(devinfo); 1181 release_firmware(fw); 1182 if (ret) 1183 goto error; 1184 1185 ret = brcmf_usb_bus_setup(devinfo); 1186 if (ret) 1187 goto error; 1188 1189 mutex_unlock(&devinfo->dev_init_lock); 1190 return; 1191 error: 1192 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1193 mutex_unlock(&devinfo->dev_init_lock); 1194 device_release_driver(dev); 1195 } 1196 1197 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) 1198 { 1199 struct brcmf_bus *bus = NULL; 1200 struct brcmf_usbdev *bus_pub = NULL; 1201 struct device *dev = devinfo->dev; 1202 int ret; 1203 1204 brcmf_dbg(USB, "Enter\n"); 1205 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1206 if (!bus_pub) 1207 return -ENODEV; 1208 1209 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1210 if (!bus) { 1211 ret = -ENOMEM; 1212 goto fail; 1213 } 1214 1215 bus->dev = dev; 1216 bus_pub->bus = bus; 1217 bus->bus_priv.usb = bus_pub; 1218 dev_set_drvdata(dev, bus); 1219 bus->ops = &brcmf_usb_bus_ops; 1220 bus->proto_type = BRCMF_PROTO_BCDC; 1221 bus->always_use_fws_queue = true; 1222 #ifdef CONFIG_PM 1223 bus->wowl_supported = true; 1224 #endif 1225 1226 if (!brcmf_usb_dlneeded(devinfo)) { 1227 ret = brcmf_usb_bus_setup(devinfo); 1228 if (ret) 1229 goto fail; 1230 /* we are done */ 1231 mutex_unlock(&devinfo->dev_init_lock); 1232 return 0; 1233 } 1234 bus->chip = bus_pub->devid; 1235 bus->chiprev = bus_pub->chiprev; 1236 1237 ret = brcmf_fw_map_chip_to_name(bus_pub->devid, bus_pub->chiprev, 1238 brcmf_usb_fwnames, 1239 ARRAY_SIZE(brcmf_usb_fwnames), 1240 devinfo->fw_name, NULL); 1241 if (ret) 1242 goto fail; 1243 1244 /* request firmware here */ 1245 ret = brcmf_fw_get_firmwares(dev, 0, devinfo->fw_name, NULL, 1246 brcmf_usb_probe_phase2); 1247 if (ret) { 1248 brcmf_err("firmware request failed: %d\n", ret); 1249 goto fail; 1250 } 1251 1252 return 0; 1253 1254 fail: 1255 /* Release resources in reverse order */ 1256 kfree(bus); 1257 brcmf_usb_detach(devinfo); 1258 return ret; 1259 } 1260 1261 static void 1262 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1263 { 1264 if (!devinfo) 1265 return; 1266 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1267 1268 brcmf_detach(devinfo->dev); 1269 kfree(devinfo->bus_pub.bus); 1270 brcmf_usb_detach(devinfo); 1271 } 1272 1273 static int 1274 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1275 { 1276 struct usb_device *usb = interface_to_usbdev(intf); 1277 struct brcmf_usbdev_info *devinfo; 1278 struct usb_interface_descriptor *desc; 1279 struct usb_endpoint_descriptor *endpoint; 1280 int ret = 0; 1281 u32 num_of_eps; 1282 u8 endpoint_num, ep; 1283 1284 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1285 1286 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1287 if (devinfo == NULL) 1288 return -ENOMEM; 1289 1290 devinfo->usbdev = usb; 1291 devinfo->dev = &usb->dev; 1292 /* Take an init lock, to protect for disconnect while still loading. 1293 * Necessary because of the asynchronous firmware load construction 1294 */ 1295 mutex_init(&devinfo->dev_init_lock); 1296 mutex_lock(&devinfo->dev_init_lock); 1297 1298 usb_set_intfdata(intf, devinfo); 1299 1300 /* Check that the device supports only one configuration */ 1301 if (usb->descriptor.bNumConfigurations != 1) { 1302 brcmf_err("Number of configurations: %d not supported\n", 1303 usb->descriptor.bNumConfigurations); 1304 ret = -ENODEV; 1305 goto fail; 1306 } 1307 1308 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1309 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1310 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1311 brcmf_err("Device class: 0x%x not supported\n", 1312 usb->descriptor.bDeviceClass); 1313 ret = -ENODEV; 1314 goto fail; 1315 } 1316 1317 desc = &intf->altsetting[0].desc; 1318 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1319 (desc->bInterfaceSubClass != 2) || 1320 (desc->bInterfaceProtocol != 0xff)) { 1321 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1322 desc->bInterfaceNumber, desc->bInterfaceClass, 1323 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1324 ret = -ENODEV; 1325 goto fail; 1326 } 1327 1328 num_of_eps = desc->bNumEndpoints; 1329 for (ep = 0; ep < num_of_eps; ep++) { 1330 endpoint = &intf->altsetting[0].endpoint[ep].desc; 1331 endpoint_num = usb_endpoint_num(endpoint); 1332 if (!usb_endpoint_xfer_bulk(endpoint)) 1333 continue; 1334 if (usb_endpoint_dir_in(endpoint)) { 1335 if (!devinfo->rx_pipe) 1336 devinfo->rx_pipe = 1337 usb_rcvbulkpipe(usb, endpoint_num); 1338 } else { 1339 if (!devinfo->tx_pipe) 1340 devinfo->tx_pipe = 1341 usb_sndbulkpipe(usb, endpoint_num); 1342 } 1343 } 1344 if (devinfo->rx_pipe == 0) { 1345 brcmf_err("No RX (in) Bulk EP found\n"); 1346 ret = -ENODEV; 1347 goto fail; 1348 } 1349 if (devinfo->tx_pipe == 0) { 1350 brcmf_err("No TX (out) Bulk EP found\n"); 1351 ret = -ENODEV; 1352 goto fail; 1353 } 1354 1355 devinfo->ifnum = desc->bInterfaceNumber; 1356 1357 if (usb->speed == USB_SPEED_SUPER) 1358 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1359 else if (usb->speed == USB_SPEED_HIGH) 1360 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1361 else 1362 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1363 1364 ret = brcmf_usb_probe_cb(devinfo); 1365 if (ret) 1366 goto fail; 1367 1368 /* Success */ 1369 return 0; 1370 1371 fail: 1372 mutex_unlock(&devinfo->dev_init_lock); 1373 kfree(devinfo); 1374 usb_set_intfdata(intf, NULL); 1375 return ret; 1376 } 1377 1378 static void 1379 brcmf_usb_disconnect(struct usb_interface *intf) 1380 { 1381 struct brcmf_usbdev_info *devinfo; 1382 1383 brcmf_dbg(USB, "Enter\n"); 1384 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1385 1386 if (devinfo) { 1387 mutex_lock(&devinfo->dev_init_lock); 1388 /* Make sure that devinfo still exists. Firmware probe routines 1389 * may have released the device and cleared the intfdata. 1390 */ 1391 if (!usb_get_intfdata(intf)) 1392 goto done; 1393 1394 brcmf_usb_disconnect_cb(devinfo); 1395 kfree(devinfo); 1396 } 1397 done: 1398 brcmf_dbg(USB, "Exit\n"); 1399 } 1400 1401 /* 1402 * only need to signal the bus being down and update the state. 1403 */ 1404 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1405 { 1406 struct usb_device *usb = interface_to_usbdev(intf); 1407 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1408 1409 brcmf_dbg(USB, "Enter\n"); 1410 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1411 if (devinfo->wowl_enabled) 1412 brcmf_cancel_all_urbs(devinfo); 1413 else 1414 brcmf_detach(&usb->dev); 1415 return 0; 1416 } 1417 1418 /* 1419 * (re-) start the bus. 1420 */ 1421 static int brcmf_usb_resume(struct usb_interface *intf) 1422 { 1423 struct usb_device *usb = interface_to_usbdev(intf); 1424 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1425 1426 brcmf_dbg(USB, "Enter\n"); 1427 if (!devinfo->wowl_enabled) 1428 return brcmf_usb_bus_setup(devinfo); 1429 1430 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1431 brcmf_usb_rx_fill_all(devinfo); 1432 return 0; 1433 } 1434 1435 static int brcmf_usb_reset_resume(struct usb_interface *intf) 1436 { 1437 struct usb_device *usb = interface_to_usbdev(intf); 1438 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1439 1440 brcmf_dbg(USB, "Enter\n"); 1441 1442 return brcmf_fw_get_firmwares(&usb->dev, 0, devinfo->fw_name, NULL, 1443 brcmf_usb_probe_phase2); 1444 } 1445 1446 #define BRCMF_USB_DEVICE(dev_id) \ 1447 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } 1448 1449 static struct usb_device_id brcmf_usb_devid_table[] = { 1450 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1451 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1452 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1453 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1454 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, 1455 /* special entry for device with firmware loaded and running */ 1456 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1457 { /* end: all zeroes */ } 1458 }; 1459 1460 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1461 1462 static struct usb_driver brcmf_usbdrvr = { 1463 .name = KBUILD_MODNAME, 1464 .probe = brcmf_usb_probe, 1465 .disconnect = brcmf_usb_disconnect, 1466 .id_table = brcmf_usb_devid_table, 1467 .suspend = brcmf_usb_suspend, 1468 .resume = brcmf_usb_resume, 1469 .reset_resume = brcmf_usb_reset_resume, 1470 .disable_hub_initiated_lpm = 1, 1471 }; 1472 1473 static int brcmf_usb_reset_device(struct device *dev, void *notused) 1474 { 1475 /* device past is the usb interface so we 1476 * need to use parent here. 1477 */ 1478 brcmf_dev_reset(dev->parent); 1479 return 0; 1480 } 1481 1482 void brcmf_usb_exit(void) 1483 { 1484 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; 1485 int ret; 1486 1487 brcmf_dbg(USB, "Enter\n"); 1488 ret = driver_for_each_device(drv, NULL, NULL, 1489 brcmf_usb_reset_device); 1490 usb_deregister(&brcmf_usbdrvr); 1491 } 1492 1493 void brcmf_usb_register(void) 1494 { 1495 brcmf_dbg(USB, "Enter\n"); 1496 usb_register(&brcmf_usbdrvr); 1497 } 1498