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 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#define BRCMF_USB_43143_FW_NAME "brcm/brcmfmac43143.bin" 47#define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin" 48#define BRCMF_USB_43242_FW_NAME "brcm/brcmfmac43242a.bin" 49#define BRCMF_USB_43569_FW_NAME "brcm/brcmfmac43569.bin" 50 51#define TRX_MAGIC 0x30524448 /* "HDR0" */ 52#define TRX_MAX_OFFSET 3 /* Max number of file offsets */ 53#define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */ 54#define TRX_RDL_CHUNK 1500 /* size of each dl transfer */ 55#define TRX_OFFSETS_DLFWLEN_IDX 0 56 57/* Control messages: bRequest values */ 58#define DL_GETSTATE 0 /* returns the rdl_state_t struct */ 59#define DL_CHECK_CRC 1 /* currently unused */ 60#define DL_GO 2 /* execute downloaded image */ 61#define DL_START 3 /* initialize dl state */ 62#define DL_REBOOT 4 /* reboot the device in 2 seconds */ 63#define DL_GETVER 5 /* returns the bootrom_id_t struct */ 64#define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset 65 * event to occur in 2 seconds. It is the 66 * responsibility of the downloaded code to 67 * clear this event 68 */ 69#define DL_EXEC 7 /* jump to a supplied address */ 70#define DL_RESETCFG 8 /* To support single enum on dongle 71 * - Not used by bootloader 72 */ 73#define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup 74 * if resp unavailable 75 */ 76 77/* states */ 78#define DL_WAITING 0 /* waiting to rx first pkt */ 79#define DL_READY 1 /* hdr was good, waiting for more of the 80 * compressed image 81 */ 82#define DL_BAD_HDR 2 /* hdr was corrupted */ 83#define DL_BAD_CRC 3 /* compressed image was corrupted */ 84#define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ 85#define DL_START_FAIL 5 /* failed to initialize correctly */ 86#define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM 87 * value 88 */ 89#define DL_IMAGE_TOOBIG 7 /* firmware image too big */ 90 91 92struct trx_header_le { 93 __le32 magic; /* "HDR0" */ 94 __le32 len; /* Length of file including header */ 95 __le32 crc32; /* CRC from flag_version to end of file */ 96 __le32 flag_version; /* 0:15 flags, 16:31 version */ 97 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of 98 * header 99 */ 100}; 101 102struct rdl_state_le { 103 __le32 state; 104 __le32 bytes; 105}; 106 107struct bootrom_id_le { 108 __le32 chip; /* Chip id */ 109 __le32 chiprev; /* Chip rev */ 110 __le32 ramsize; /* Size of RAM */ 111 __le32 remapbase; /* Current remap base address */ 112 __le32 boardtype; /* Type of board */ 113 __le32 boardrev; /* Board revision */ 114}; 115 116struct brcmf_usb_image { 117 struct list_head list; 118 s8 *fwname; 119 u8 *image; 120 int image_len; 121}; 122 123struct brcmf_usbdev_info { 124 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ 125 spinlock_t qlock; 126 struct list_head rx_freeq; 127 struct list_head rx_postq; 128 struct list_head tx_freeq; 129 struct list_head tx_postq; 130 uint rx_pipe, tx_pipe; 131 132 int rx_low_watermark; 133 int tx_low_watermark; 134 int tx_high_watermark; 135 int tx_freecount; 136 bool tx_flowblock; 137 spinlock_t tx_flowblock_lock; 138 139 struct brcmf_usbreq *tx_reqs; 140 struct brcmf_usbreq *rx_reqs; 141 142 const u8 *image; /* buffer for combine fw and nvram */ 143 int image_len; 144 145 struct usb_device *usbdev; 146 struct device *dev; 147 148 int ctl_in_pipe, ctl_out_pipe; 149 struct urb *ctl_urb; /* URB for control endpoint */ 150 struct usb_ctrlrequest ctl_write; 151 struct usb_ctrlrequest ctl_read; 152 u32 ctl_urb_actual_length; 153 int ctl_urb_status; 154 int ctl_completed; 155 wait_queue_head_t ioctl_resp_wait; 156 ulong ctl_op; 157 u8 ifnum; 158 159 struct urb *bulk_urb; /* used for FW download */ 160 161 bool wowl_enabled; 162}; 163 164static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 165 struct brcmf_usbreq *req); 166 167static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 168{ 169 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 170 return bus_if->bus_priv.usb; 171} 172 173static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 174{ 175 return brcmf_usb_get_buspub(dev)->devinfo; 176} 177 178static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 179{ 180 return wait_event_timeout(devinfo->ioctl_resp_wait, 181 devinfo->ctl_completed, 182 msecs_to_jiffies(IOCTL_RESP_TIMEOUT)); 183} 184 185static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 186{ 187 if (waitqueue_active(&devinfo->ioctl_resp_wait)) 188 wake_up(&devinfo->ioctl_resp_wait); 189} 190 191static void 192brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 193{ 194 brcmf_dbg(USB, "Enter, status=%d\n", status); 195 196 if (unlikely(devinfo == NULL)) 197 return; 198 199 if (type == BRCMF_USB_CBCTL_READ) { 200 if (status == 0) 201 devinfo->bus_pub.stats.rx_ctlpkts++; 202 else 203 devinfo->bus_pub.stats.rx_ctlerrs++; 204 } else if (type == BRCMF_USB_CBCTL_WRITE) { 205 if (status == 0) 206 devinfo->bus_pub.stats.tx_ctlpkts++; 207 else 208 devinfo->bus_pub.stats.tx_ctlerrs++; 209 } 210 211 devinfo->ctl_urb_status = status; 212 devinfo->ctl_completed = true; 213 brcmf_usb_ioctl_resp_wake(devinfo); 214} 215 216static void 217brcmf_usb_ctlread_complete(struct urb *urb) 218{ 219 struct brcmf_usbdev_info *devinfo = 220 (struct brcmf_usbdev_info *)urb->context; 221 222 brcmf_dbg(USB, "Enter\n"); 223 devinfo->ctl_urb_actual_length = urb->actual_length; 224 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 225 urb->status); 226} 227 228static void 229brcmf_usb_ctlwrite_complete(struct urb *urb) 230{ 231 struct brcmf_usbdev_info *devinfo = 232 (struct brcmf_usbdev_info *)urb->context; 233 234 brcmf_dbg(USB, "Enter\n"); 235 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 236 urb->status); 237} 238 239static int 240brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 241{ 242 int ret; 243 u16 size; 244 245 brcmf_dbg(USB, "Enter\n"); 246 if (devinfo == NULL || buf == NULL || 247 len == 0 || devinfo->ctl_urb == NULL) 248 return -EINVAL; 249 250 size = len; 251 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 252 devinfo->ctl_urb->transfer_buffer_length = size; 253 devinfo->ctl_urb_status = 0; 254 devinfo->ctl_urb_actual_length = 0; 255 256 usb_fill_control_urb(devinfo->ctl_urb, 257 devinfo->usbdev, 258 devinfo->ctl_out_pipe, 259 (unsigned char *) &devinfo->ctl_write, 260 buf, size, 261 (usb_complete_t)brcmf_usb_ctlwrite_complete, 262 devinfo); 263 264 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 265 if (ret < 0) 266 brcmf_err("usb_submit_urb failed %d\n", ret); 267 268 return ret; 269} 270 271static int 272brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 273{ 274 int ret; 275 u16 size; 276 277 brcmf_dbg(USB, "Enter\n"); 278 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 279 || (devinfo->ctl_urb == NULL)) 280 return -EINVAL; 281 282 size = len; 283 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 284 devinfo->ctl_urb->transfer_buffer_length = size; 285 286 devinfo->ctl_read.bRequestType = USB_DIR_IN 287 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 288 devinfo->ctl_read.bRequest = 1; 289 290 usb_fill_control_urb(devinfo->ctl_urb, 291 devinfo->usbdev, 292 devinfo->ctl_in_pipe, 293 (unsigned char *) &devinfo->ctl_read, 294 buf, size, 295 (usb_complete_t)brcmf_usb_ctlread_complete, 296 devinfo); 297 298 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 299 if (ret < 0) 300 brcmf_err("usb_submit_urb failed %d\n", ret); 301 302 return ret; 303} 304 305static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 306{ 307 int err = 0; 308 int timeout = 0; 309 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 310 311 brcmf_dbg(USB, "Enter\n"); 312 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 313 return -EIO; 314 315 if (test_and_set_bit(0, &devinfo->ctl_op)) 316 return -EIO; 317 318 devinfo->ctl_completed = false; 319 err = brcmf_usb_send_ctl(devinfo, buf, len); 320 if (err) { 321 brcmf_err("fail %d bytes: %d\n", err, len); 322 clear_bit(0, &devinfo->ctl_op); 323 return err; 324 } 325 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 326 clear_bit(0, &devinfo->ctl_op); 327 if (!timeout) { 328 brcmf_err("Txctl wait timed out\n"); 329 err = -EIO; 330 } 331 return err; 332} 333 334static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 335{ 336 int err = 0; 337 int timeout = 0; 338 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 339 340 brcmf_dbg(USB, "Enter\n"); 341 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 342 return -EIO; 343 344 if (test_and_set_bit(0, &devinfo->ctl_op)) 345 return -EIO; 346 347 devinfo->ctl_completed = false; 348 err = brcmf_usb_recv_ctl(devinfo, buf, len); 349 if (err) { 350 brcmf_err("fail %d bytes: %d\n", err, len); 351 clear_bit(0, &devinfo->ctl_op); 352 return err; 353 } 354 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 355 err = devinfo->ctl_urb_status; 356 clear_bit(0, &devinfo->ctl_op); 357 if (!timeout) { 358 brcmf_err("rxctl wait timed out\n"); 359 err = -EIO; 360 } 361 if (!err) 362 return devinfo->ctl_urb_actual_length; 363 else 364 return err; 365} 366 367static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 368 struct list_head *q, int *counter) 369{ 370 unsigned long flags; 371 struct brcmf_usbreq *req; 372 spin_lock_irqsave(&devinfo->qlock, flags); 373 if (list_empty(q)) { 374 spin_unlock_irqrestore(&devinfo->qlock, flags); 375 return NULL; 376 } 377 req = list_entry(q->next, struct brcmf_usbreq, list); 378 list_del_init(q->next); 379 if (counter) 380 (*counter)--; 381 spin_unlock_irqrestore(&devinfo->qlock, flags); 382 return req; 383 384} 385 386static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 387 struct list_head *q, struct brcmf_usbreq *req, 388 int *counter) 389{ 390 unsigned long flags; 391 spin_lock_irqsave(&devinfo->qlock, flags); 392 list_add_tail(&req->list, q); 393 if (counter) 394 (*counter)++; 395 spin_unlock_irqrestore(&devinfo->qlock, flags); 396} 397 398static struct brcmf_usbreq * 399brcmf_usbdev_qinit(struct list_head *q, int qsize) 400{ 401 int i; 402 struct brcmf_usbreq *req, *reqs; 403 404 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 405 if (reqs == NULL) 406 return NULL; 407 408 req = reqs; 409 410 for (i = 0; i < qsize; i++) { 411 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 412 if (!req->urb) 413 goto fail; 414 415 INIT_LIST_HEAD(&req->list); 416 list_add_tail(&req->list, q); 417 req++; 418 } 419 return reqs; 420fail: 421 brcmf_err("fail!\n"); 422 while (!list_empty(q)) { 423 req = list_entry(q->next, struct brcmf_usbreq, list); 424 if (req) 425 usb_free_urb(req->urb); 426 list_del(q->next); 427 } 428 return NULL; 429 430} 431 432static void brcmf_usb_free_q(struct list_head *q, bool pending) 433{ 434 struct brcmf_usbreq *req, *next; 435 int i = 0; 436 list_for_each_entry_safe(req, next, q, list) { 437 if (!req->urb) { 438 brcmf_err("bad req\n"); 439 break; 440 } 441 i++; 442 if (pending) { 443 usb_kill_urb(req->urb); 444 } else { 445 usb_free_urb(req->urb); 446 list_del_init(&req->list); 447 } 448 } 449} 450 451static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 452 struct brcmf_usbreq *req) 453{ 454 unsigned long flags; 455 456 spin_lock_irqsave(&devinfo->qlock, flags); 457 list_del_init(&req->list); 458 spin_unlock_irqrestore(&devinfo->qlock, flags); 459} 460 461 462static void brcmf_usb_tx_complete(struct urb *urb) 463{ 464 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 465 struct brcmf_usbdev_info *devinfo = req->devinfo; 466 unsigned long flags; 467 468 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 469 req->skb); 470 brcmf_usb_del_fromq(devinfo, req); 471 472 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0); 473 req->skb = NULL; 474 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 475 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 476 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 477 devinfo->tx_flowblock) { 478 brcmf_txflowblock(devinfo->dev, false); 479 devinfo->tx_flowblock = false; 480 } 481 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 482} 483 484static void brcmf_usb_rx_complete(struct urb *urb) 485{ 486 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 487 struct brcmf_usbdev_info *devinfo = req->devinfo; 488 struct sk_buff *skb; 489 490 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 491 brcmf_usb_del_fromq(devinfo, req); 492 skb = req->skb; 493 req->skb = NULL; 494 495 /* zero lenght packets indicate usb "failure". Do not refill */ 496 if (urb->status != 0 || !urb->actual_length) { 497 brcmu_pkt_buf_free_skb(skb); 498 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 499 return; 500 } 501 502 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { 503 skb_put(skb, urb->actual_length); 504 brcmf_rx_frame(devinfo->dev, skb); 505 brcmf_usb_rx_refill(devinfo, req); 506 } else { 507 brcmu_pkt_buf_free_skb(skb); 508 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 509 } 510 return; 511 512} 513 514static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 515 struct brcmf_usbreq *req) 516{ 517 struct sk_buff *skb; 518 int ret; 519 520 if (!req || !devinfo) 521 return; 522 523 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 524 if (!skb) { 525 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 526 return; 527 } 528 req->skb = skb; 529 530 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 531 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 532 req); 533 req->devinfo = devinfo; 534 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 535 536 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 537 if (ret) { 538 brcmf_usb_del_fromq(devinfo, req); 539 brcmu_pkt_buf_free_skb(req->skb); 540 req->skb = NULL; 541 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 542 } 543 return; 544} 545 546static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 547{ 548 struct brcmf_usbreq *req; 549 550 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 551 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 552 return; 553 } 554 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 555 brcmf_usb_rx_refill(devinfo, req); 556} 557 558static void 559brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 560{ 561 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 562 int old_state; 563 564 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 565 devinfo->bus_pub.state, state); 566 567 if (devinfo->bus_pub.state == state) 568 return; 569 570 old_state = devinfo->bus_pub.state; 571 devinfo->bus_pub.state = state; 572 573 /* update state of upper layer */ 574 if (state == BRCMFMAC_USB_STATE_DOWN) { 575 brcmf_dbg(USB, "DBUS is down\n"); 576 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 577 } else if (state == BRCMFMAC_USB_STATE_UP) { 578 brcmf_dbg(USB, "DBUS is up\n"); 579 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 580 } else { 581 brcmf_dbg(USB, "DBUS current state=%d\n", state); 582 } 583} 584 585static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 586{ 587 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 588 struct brcmf_usbreq *req; 589 int ret; 590 unsigned long flags; 591 592 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 593 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 594 ret = -EIO; 595 goto fail; 596 } 597 598 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 599 &devinfo->tx_freecount); 600 if (!req) { 601 brcmf_err("no req to send\n"); 602 ret = -ENOMEM; 603 goto fail; 604 } 605 606 req->skb = skb; 607 req->devinfo = devinfo; 608 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 609 skb->data, skb->len, brcmf_usb_tx_complete, req); 610 req->urb->transfer_flags |= URB_ZERO_PACKET; 611 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 612 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 613 if (ret) { 614 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 615 brcmf_usb_del_fromq(devinfo, req); 616 req->skb = NULL; 617 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 618 &devinfo->tx_freecount); 619 goto fail; 620 } 621 622 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 623 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 624 !devinfo->tx_flowblock) { 625 brcmf_txflowblock(dev, true); 626 devinfo->tx_flowblock = true; 627 } 628 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 629 return 0; 630 631fail: 632 return ret; 633} 634 635 636static int brcmf_usb_up(struct device *dev) 637{ 638 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 639 640 brcmf_dbg(USB, "Enter\n"); 641 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 642 return 0; 643 644 /* Success, indicate devinfo is fully up */ 645 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 646 647 if (devinfo->ctl_urb) { 648 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 649 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 650 651 /* CTL Write */ 652 devinfo->ctl_write.bRequestType = 653 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 654 devinfo->ctl_write.bRequest = 0; 655 devinfo->ctl_write.wValue = cpu_to_le16(0); 656 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 657 658 /* CTL Read */ 659 devinfo->ctl_read.bRequestType = 660 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 661 devinfo->ctl_read.bRequest = 1; 662 devinfo->ctl_read.wValue = cpu_to_le16(0); 663 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 664 } 665 brcmf_usb_rx_fill_all(devinfo); 666 return 0; 667} 668 669static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 670{ 671 if (devinfo->ctl_urb) 672 usb_kill_urb(devinfo->ctl_urb); 673 if (devinfo->bulk_urb) 674 usb_kill_urb(devinfo->bulk_urb); 675 brcmf_usb_free_q(&devinfo->tx_postq, true); 676 brcmf_usb_free_q(&devinfo->rx_postq, true); 677} 678 679static void brcmf_usb_down(struct device *dev) 680{ 681 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 682 683 brcmf_dbg(USB, "Enter\n"); 684 if (devinfo == NULL) 685 return; 686 687 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 688 return; 689 690 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 691 692 brcmf_cancel_all_urbs(devinfo); 693} 694 695static void 696brcmf_usb_sync_complete(struct urb *urb) 697{ 698 struct brcmf_usbdev_info *devinfo = 699 (struct brcmf_usbdev_info *)urb->context; 700 701 devinfo->ctl_completed = true; 702 brcmf_usb_ioctl_resp_wake(devinfo); 703} 704 705static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 706 void *buffer, int buflen) 707{ 708 int ret; 709 char *tmpbuf; 710 u16 size; 711 712 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 713 return -EINVAL; 714 715 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 716 if (!tmpbuf) 717 return -ENOMEM; 718 719 size = buflen; 720 devinfo->ctl_urb->transfer_buffer_length = size; 721 722 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 723 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 724 USB_RECIP_INTERFACE; 725 devinfo->ctl_read.bRequest = cmd; 726 727 usb_fill_control_urb(devinfo->ctl_urb, 728 devinfo->usbdev, 729 usb_rcvctrlpipe(devinfo->usbdev, 0), 730 (unsigned char *) &devinfo->ctl_read, 731 (void *) tmpbuf, size, 732 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 733 734 devinfo->ctl_completed = false; 735 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 736 if (ret < 0) { 737 brcmf_err("usb_submit_urb failed %d\n", ret); 738 goto finalize; 739 } 740 741 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 742 usb_kill_urb(devinfo->ctl_urb); 743 ret = -ETIMEDOUT; 744 } else { 745 memcpy(buffer, tmpbuf, buflen); 746 } 747 748finalize: 749 kfree(tmpbuf); 750 return ret; 751} 752 753static bool 754brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 755{ 756 struct bootrom_id_le id; 757 u32 chipid, chiprev; 758 759 brcmf_dbg(USB, "Enter\n"); 760 761 if (devinfo == NULL) 762 return false; 763 764 /* Check if firmware downloaded already by querying runtime ID */ 765 id.chip = cpu_to_le32(0xDEAD); 766 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 767 768 chipid = le32_to_cpu(id.chip); 769 chiprev = le32_to_cpu(id.chiprev); 770 771 if ((chipid & 0x4300) == 0x4300) 772 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 773 else 774 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 775 if (chipid == BRCMF_POSTBOOT_ID) { 776 brcmf_dbg(USB, "firmware already downloaded\n"); 777 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 778 return false; 779 } else { 780 devinfo->bus_pub.devid = chipid; 781 devinfo->bus_pub.chiprev = chiprev; 782 } 783 return true; 784} 785 786static int 787brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 788{ 789 struct bootrom_id_le id; 790 u32 loop_cnt; 791 int err; 792 793 brcmf_dbg(USB, "Enter\n"); 794 795 loop_cnt = 0; 796 do { 797 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 798 loop_cnt++; 799 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 800 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 801 if ((err) && (err != -ETIMEDOUT)) 802 return err; 803 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 804 break; 805 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 806 807 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 808 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 809 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 810 811 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 812 return 0; 813 } else { 814 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 815 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 816 return -EINVAL; 817 } 818} 819 820 821static int 822brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 823{ 824 int ret; 825 826 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 827 return -EINVAL; 828 829 /* Prepare the URB */ 830 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 831 devinfo->tx_pipe, buffer, len, 832 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 833 834 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 835 836 devinfo->ctl_completed = false; 837 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 838 if (ret) { 839 brcmf_err("usb_submit_urb failed %d\n", ret); 840 return ret; 841 } 842 ret = brcmf_usb_ioctl_resp_wait(devinfo); 843 return (ret == 0); 844} 845 846static int 847brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 848{ 849 unsigned int sendlen, sent, dllen; 850 char *bulkchunk = NULL, *dlpos; 851 struct rdl_state_le state; 852 u32 rdlstate, rdlbytes; 853 int err = 0; 854 855 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 856 857 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 858 if (bulkchunk == NULL) { 859 err = -ENOMEM; 860 goto fail; 861 } 862 863 /* 1) Prepare USB boot loader for runtime image */ 864 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 865 866 rdlstate = le32_to_cpu(state.state); 867 rdlbytes = le32_to_cpu(state.bytes); 868 869 /* 2) Check we are in the Waiting state */ 870 if (rdlstate != DL_WAITING) { 871 brcmf_err("Failed to DL_START\n"); 872 err = -EINVAL; 873 goto fail; 874 } 875 sent = 0; 876 dlpos = fw; 877 dllen = fwlen; 878 879 /* Get chip id and rev */ 880 while (rdlbytes != dllen) { 881 /* Wait until the usb device reports it received all 882 * the bytes we sent */ 883 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 884 if ((dllen-sent) < TRX_RDL_CHUNK) 885 sendlen = dllen-sent; 886 else 887 sendlen = TRX_RDL_CHUNK; 888 889 /* simply avoid having to send a ZLP by ensuring we 890 * never have an even 891 * multiple of 64 892 */ 893 if (!(sendlen % 64)) 894 sendlen -= 4; 895 896 /* send data */ 897 memcpy(bulkchunk, dlpos, sendlen); 898 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 899 sendlen)) { 900 brcmf_err("send_bulk failed\n"); 901 err = -EINVAL; 902 goto fail; 903 } 904 905 dlpos += sendlen; 906 sent += sendlen; 907 } 908 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 909 sizeof(state)); 910 if (err) { 911 brcmf_err("DL_GETSTATE Failed\n"); 912 goto fail; 913 } 914 915 rdlstate = le32_to_cpu(state.state); 916 rdlbytes = le32_to_cpu(state.bytes); 917 918 /* restart if an error is reported */ 919 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 920 brcmf_err("Bad Hdr or Bad CRC state %d\n", 921 rdlstate); 922 err = -EINVAL; 923 goto fail; 924 } 925 } 926 927fail: 928 kfree(bulkchunk); 929 brcmf_dbg(USB, "Exit, err=%d\n", err); 930 return err; 931} 932 933static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 934{ 935 int err; 936 937 brcmf_dbg(USB, "Enter\n"); 938 939 if (devinfo == NULL) 940 return -EINVAL; 941 942 if (devinfo->bus_pub.devid == 0xDEAD) 943 return -EINVAL; 944 945 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 946 if (err == 0) 947 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 948 else 949 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 950 brcmf_dbg(USB, "Exit, err=%d\n", err); 951 952 return err; 953} 954 955static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 956{ 957 struct rdl_state_le state; 958 959 brcmf_dbg(USB, "Enter\n"); 960 if (!devinfo) 961 return -EINVAL; 962 963 if (devinfo->bus_pub.devid == 0xDEAD) 964 return -EINVAL; 965 966 /* Check we are runnable */ 967 state.state = 0; 968 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 969 970 /* Start the image */ 971 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 972 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 973 return -ENODEV; 974 if (brcmf_usb_resetcfg(devinfo)) 975 return -ENODEV; 976 /* The Dongle may go for re-enumeration. */ 977 } else { 978 brcmf_err("Dongle not runnable\n"); 979 return -EINVAL; 980 } 981 brcmf_dbg(USB, "Exit\n"); 982 return 0; 983} 984 985static bool brcmf_usb_chip_support(int chipid, int chiprev) 986{ 987 switch(chipid) { 988 case BRCM_CC_43143_CHIP_ID: 989 return true; 990 case BRCM_CC_43235_CHIP_ID: 991 case BRCM_CC_43236_CHIP_ID: 992 case BRCM_CC_43238_CHIP_ID: 993 return (chiprev == 3); 994 case BRCM_CC_43242_CHIP_ID: 995 return true; 996 case BRCM_CC_43566_CHIP_ID: 997 case BRCM_CC_43569_CHIP_ID: 998 return true; 999 default: 1000 break; 1001 } 1002 return false; 1003} 1004 1005static int 1006brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1007{ 1008 int devid, chiprev; 1009 int err; 1010 1011 brcmf_dbg(USB, "Enter\n"); 1012 if (devinfo == NULL) 1013 return -ENODEV; 1014 1015 devid = devinfo->bus_pub.devid; 1016 chiprev = devinfo->bus_pub.chiprev; 1017 1018 if (!brcmf_usb_chip_support(devid, chiprev)) { 1019 brcmf_err("unsupported chip %d rev %d\n", 1020 devid, chiprev); 1021 return -EINVAL; 1022 } 1023 1024 if (!devinfo->image) { 1025 brcmf_err("No firmware!\n"); 1026 return -ENOENT; 1027 } 1028 1029 err = brcmf_usb_dlstart(devinfo, 1030 (u8 *)devinfo->image, devinfo->image_len); 1031 if (err == 0) 1032 err = brcmf_usb_dlrun(devinfo); 1033 return err; 1034} 1035 1036 1037static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1038{ 1039 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1040 1041 /* free the URBS */ 1042 brcmf_usb_free_q(&devinfo->rx_freeq, false); 1043 brcmf_usb_free_q(&devinfo->tx_freeq, false); 1044 1045 usb_free_urb(devinfo->ctl_urb); 1046 usb_free_urb(devinfo->bulk_urb); 1047 1048 kfree(devinfo->tx_reqs); 1049 kfree(devinfo->rx_reqs); 1050} 1051 1052 1053static int check_file(const u8 *headers) 1054{ 1055 struct trx_header_le *trx; 1056 int actual_len = -1; 1057 1058 brcmf_dbg(USB, "Enter\n"); 1059 /* Extract trx header */ 1060 trx = (struct trx_header_le *) headers; 1061 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1062 return -1; 1063 1064 headers += sizeof(struct trx_header_le); 1065 1066 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1067 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1068 return actual_len + sizeof(struct trx_header_le); 1069 } 1070 return -1; 1071} 1072 1073static const char *brcmf_usb_get_fwname(struct brcmf_usbdev_info *devinfo) 1074{ 1075 switch (devinfo->bus_pub.devid) { 1076 case BRCM_CC_43143_CHIP_ID: 1077 return BRCMF_USB_43143_FW_NAME; 1078 case BRCM_CC_43235_CHIP_ID: 1079 case BRCM_CC_43236_CHIP_ID: 1080 case BRCM_CC_43238_CHIP_ID: 1081 return BRCMF_USB_43236_FW_NAME; 1082 case BRCM_CC_43242_CHIP_ID: 1083 return BRCMF_USB_43242_FW_NAME; 1084 case BRCM_CC_43566_CHIP_ID: 1085 case BRCM_CC_43569_CHIP_ID: 1086 return BRCMF_USB_43569_FW_NAME; 1087 default: 1088 return NULL; 1089 } 1090} 1091 1092 1093static 1094struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1095 int nrxq, int ntxq) 1096{ 1097 brcmf_dbg(USB, "Enter\n"); 1098 1099 devinfo->bus_pub.nrxq = nrxq; 1100 devinfo->rx_low_watermark = nrxq / 2; 1101 devinfo->bus_pub.devinfo = devinfo; 1102 devinfo->bus_pub.ntxq = ntxq; 1103 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1104 1105 /* flow control when too many tx urbs posted */ 1106 devinfo->tx_low_watermark = ntxq / 4; 1107 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1108 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1109 1110 /* Initialize other structure content */ 1111 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1112 1113 /* Initialize the spinlocks */ 1114 spin_lock_init(&devinfo->qlock); 1115 spin_lock_init(&devinfo->tx_flowblock_lock); 1116 1117 INIT_LIST_HEAD(&devinfo->rx_freeq); 1118 INIT_LIST_HEAD(&devinfo->rx_postq); 1119 1120 INIT_LIST_HEAD(&devinfo->tx_freeq); 1121 INIT_LIST_HEAD(&devinfo->tx_postq); 1122 1123 devinfo->tx_flowblock = false; 1124 1125 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1126 if (!devinfo->rx_reqs) 1127 goto error; 1128 1129 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1130 if (!devinfo->tx_reqs) 1131 goto error; 1132 devinfo->tx_freecount = ntxq; 1133 1134 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1135 if (!devinfo->ctl_urb) { 1136 brcmf_err("usb_alloc_urb (ctl) failed\n"); 1137 goto error; 1138 } 1139 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1140 if (!devinfo->bulk_urb) { 1141 brcmf_err("usb_alloc_urb (bulk) failed\n"); 1142 goto error; 1143 } 1144 1145 return &devinfo->bus_pub; 1146 1147error: 1148 brcmf_err("failed!\n"); 1149 brcmf_usb_detach(devinfo); 1150 return NULL; 1151} 1152 1153static void brcmf_usb_wowl_config(struct device *dev, bool enabled) 1154{ 1155 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 1156 1157 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); 1158 devinfo->wowl_enabled = enabled; 1159 if (enabled) 1160 device_set_wakeup_enable(devinfo->dev, true); 1161 else 1162 device_set_wakeup_enable(devinfo->dev, false); 1163} 1164 1165static struct brcmf_bus_ops brcmf_usb_bus_ops = { 1166 .txdata = brcmf_usb_tx, 1167 .stop = brcmf_usb_down, 1168 .txctl = brcmf_usb_tx_ctlpkt, 1169 .rxctl = brcmf_usb_rx_ctlpkt, 1170 .wowl_config = brcmf_usb_wowl_config, 1171}; 1172 1173static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo) 1174{ 1175 int ret; 1176 1177 /* Attach to the common driver interface */ 1178 ret = brcmf_attach(devinfo->dev); 1179 if (ret) { 1180 brcmf_err("brcmf_attach failed\n"); 1181 return ret; 1182 } 1183 1184 ret = brcmf_usb_up(devinfo->dev); 1185 if (ret) 1186 goto fail; 1187 1188 ret = brcmf_bus_start(devinfo->dev); 1189 if (ret) 1190 goto fail; 1191 1192 return 0; 1193fail: 1194 brcmf_detach(devinfo->dev); 1195 return ret; 1196} 1197 1198static void brcmf_usb_probe_phase2(struct device *dev, 1199 const struct firmware *fw, 1200 void *nvram, u32 nvlen) 1201{ 1202 struct brcmf_bus *bus = dev_get_drvdata(dev); 1203 struct brcmf_usbdev_info *devinfo; 1204 int ret; 1205 1206 brcmf_dbg(USB, "Start fw downloading\n"); 1207 ret = check_file(fw->data); 1208 if (ret < 0) { 1209 brcmf_err("invalid firmware\n"); 1210 release_firmware(fw); 1211 goto error; 1212 } 1213 1214 devinfo = bus->bus_priv.usb->devinfo; 1215 devinfo->image = fw->data; 1216 devinfo->image_len = fw->size; 1217 1218 ret = brcmf_usb_fw_download(devinfo); 1219 release_firmware(fw); 1220 if (ret) 1221 goto error; 1222 1223 ret = brcmf_usb_bus_setup(devinfo); 1224 if (ret) 1225 goto error; 1226 1227 return; 1228error: 1229 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1230 device_release_driver(dev); 1231} 1232 1233static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) 1234{ 1235 struct brcmf_bus *bus = NULL; 1236 struct brcmf_usbdev *bus_pub = NULL; 1237 struct device *dev = devinfo->dev; 1238 int ret; 1239 1240 brcmf_dbg(USB, "Enter\n"); 1241 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1242 if (!bus_pub) 1243 return -ENODEV; 1244 1245 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1246 if (!bus) { 1247 ret = -ENOMEM; 1248 goto fail; 1249 } 1250 1251 bus->dev = dev; 1252 bus_pub->bus = bus; 1253 bus->bus_priv.usb = bus_pub; 1254 dev_set_drvdata(dev, bus); 1255 bus->ops = &brcmf_usb_bus_ops; 1256 bus->proto_type = BRCMF_PROTO_BCDC; 1257 bus->always_use_fws_queue = true; 1258#ifdef CONFIG_PM 1259 bus->wowl_supported = true; 1260#endif 1261 1262 if (!brcmf_usb_dlneeded(devinfo)) { 1263 ret = brcmf_usb_bus_setup(devinfo); 1264 if (ret) 1265 goto fail; 1266 /* we are done */ 1267 return 0; 1268 } 1269 bus->chip = bus_pub->devid; 1270 bus->chiprev = bus_pub->chiprev; 1271 1272 /* request firmware here */ 1273 brcmf_fw_get_firmwares(dev, 0, brcmf_usb_get_fwname(devinfo), NULL, 1274 brcmf_usb_probe_phase2); 1275 return 0; 1276 1277fail: 1278 /* Release resources in reverse order */ 1279 kfree(bus); 1280 brcmf_usb_detach(devinfo); 1281 return ret; 1282} 1283 1284static void 1285brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1286{ 1287 if (!devinfo) 1288 return; 1289 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1290 1291 brcmf_detach(devinfo->dev); 1292 kfree(devinfo->bus_pub.bus); 1293 brcmf_usb_detach(devinfo); 1294} 1295 1296static int 1297brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1298{ 1299 struct usb_device *usb = interface_to_usbdev(intf); 1300 struct brcmf_usbdev_info *devinfo; 1301 struct usb_interface_descriptor *desc; 1302 struct usb_endpoint_descriptor *endpoint; 1303 int ret = 0; 1304 u32 num_of_eps; 1305 u8 endpoint_num, ep; 1306 1307 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1308 1309 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1310 if (devinfo == NULL) 1311 return -ENOMEM; 1312 1313 devinfo->usbdev = usb; 1314 devinfo->dev = &usb->dev; 1315 usb_set_intfdata(intf, devinfo); 1316 1317 /* Check that the device supports only one configuration */ 1318 if (usb->descriptor.bNumConfigurations != 1) { 1319 brcmf_err("Number of configurations: %d not supported\n", 1320 usb->descriptor.bNumConfigurations); 1321 ret = -ENODEV; 1322 goto fail; 1323 } 1324 1325 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1326 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1327 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1328 brcmf_err("Device class: 0x%x not supported\n", 1329 usb->descriptor.bDeviceClass); 1330 ret = -ENODEV; 1331 goto fail; 1332 } 1333 1334 desc = &intf->altsetting[0].desc; 1335 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1336 (desc->bInterfaceSubClass != 2) || 1337 (desc->bInterfaceProtocol != 0xff)) { 1338 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1339 desc->bInterfaceNumber, desc->bInterfaceClass, 1340 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1341 ret = -ENODEV; 1342 goto fail; 1343 } 1344 1345 num_of_eps = desc->bNumEndpoints; 1346 for (ep = 0; ep < num_of_eps; ep++) { 1347 endpoint = &intf->altsetting[0].endpoint[ep].desc; 1348 endpoint_num = usb_endpoint_num(endpoint); 1349 if (!usb_endpoint_xfer_bulk(endpoint)) 1350 continue; 1351 if (usb_endpoint_dir_in(endpoint)) { 1352 if (!devinfo->rx_pipe) 1353 devinfo->rx_pipe = 1354 usb_rcvbulkpipe(usb, endpoint_num); 1355 } else { 1356 if (!devinfo->tx_pipe) 1357 devinfo->tx_pipe = 1358 usb_sndbulkpipe(usb, endpoint_num); 1359 } 1360 } 1361 if (devinfo->rx_pipe == 0) { 1362 brcmf_err("No RX (in) Bulk EP found\n"); 1363 ret = -ENODEV; 1364 goto fail; 1365 } 1366 if (devinfo->tx_pipe == 0) { 1367 brcmf_err("No TX (out) Bulk EP found\n"); 1368 ret = -ENODEV; 1369 goto fail; 1370 } 1371 1372 devinfo->ifnum = desc->bInterfaceNumber; 1373 1374 if (usb->speed == USB_SPEED_SUPER) 1375 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1376 else if (usb->speed == USB_SPEED_HIGH) 1377 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1378 else 1379 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1380 1381 ret = brcmf_usb_probe_cb(devinfo); 1382 if (ret) 1383 goto fail; 1384 1385 /* Success */ 1386 return 0; 1387 1388fail: 1389 kfree(devinfo); 1390 usb_set_intfdata(intf, NULL); 1391 return ret; 1392} 1393 1394static void 1395brcmf_usb_disconnect(struct usb_interface *intf) 1396{ 1397 struct brcmf_usbdev_info *devinfo; 1398 1399 brcmf_dbg(USB, "Enter\n"); 1400 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1401 brcmf_usb_disconnect_cb(devinfo); 1402 kfree(devinfo); 1403 brcmf_dbg(USB, "Exit\n"); 1404} 1405 1406/* 1407 * only need to signal the bus being down and update the state. 1408 */ 1409static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1410{ 1411 struct usb_device *usb = interface_to_usbdev(intf); 1412 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1413 1414 brcmf_dbg(USB, "Enter\n"); 1415 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1416 if (devinfo->wowl_enabled) 1417 brcmf_cancel_all_urbs(devinfo); 1418 else 1419 brcmf_detach(&usb->dev); 1420 return 0; 1421} 1422 1423/* 1424 * (re-) start the bus. 1425 */ 1426static int brcmf_usb_resume(struct usb_interface *intf) 1427{ 1428 struct usb_device *usb = interface_to_usbdev(intf); 1429 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1430 1431 brcmf_dbg(USB, "Enter\n"); 1432 if (!devinfo->wowl_enabled) 1433 return brcmf_usb_bus_setup(devinfo); 1434 1435 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1436 brcmf_usb_rx_fill_all(devinfo); 1437 return 0; 1438} 1439 1440static int brcmf_usb_reset_resume(struct usb_interface *intf) 1441{ 1442 struct usb_device *usb = interface_to_usbdev(intf); 1443 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1444 1445 brcmf_dbg(USB, "Enter\n"); 1446 1447 return brcmf_fw_get_firmwares(&usb->dev, 0, 1448 brcmf_usb_get_fwname(devinfo), NULL, 1449 brcmf_usb_probe_phase2); 1450} 1451 1452#define BRCMF_USB_DEVICE(dev_id) \ 1453 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } 1454 1455static struct usb_device_id brcmf_usb_devid_table[] = { 1456 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1457 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1458 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1459 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1460 /* special entry for device with firmware loaded and running */ 1461 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1462 { /* end: all zeroes */ } 1463}; 1464 1465MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1466MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME); 1467MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME); 1468MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME); 1469MODULE_FIRMWARE(BRCMF_USB_43569_FW_NAME); 1470 1471static struct usb_driver brcmf_usbdrvr = { 1472 .name = KBUILD_MODNAME, 1473 .probe = brcmf_usb_probe, 1474 .disconnect = brcmf_usb_disconnect, 1475 .id_table = brcmf_usb_devid_table, 1476 .suspend = brcmf_usb_suspend, 1477 .resume = brcmf_usb_resume, 1478 .reset_resume = brcmf_usb_reset_resume, 1479 .supports_autosuspend = 1, 1480 .disable_hub_initiated_lpm = 1, 1481}; 1482 1483static int brcmf_usb_reset_device(struct device *dev, void *notused) 1484{ 1485 /* device past is the usb interface so we 1486 * need to use parent here. 1487 */ 1488 brcmf_dev_reset(dev->parent); 1489 return 0; 1490} 1491 1492void brcmf_usb_exit(void) 1493{ 1494 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; 1495 int ret; 1496 1497 brcmf_dbg(USB, "Enter\n"); 1498 ret = driver_for_each_device(drv, NULL, NULL, 1499 brcmf_usb_reset_device); 1500 usb_deregister(&brcmf_usbdrvr); 1501} 1502 1503void brcmf_usb_register(void) 1504{ 1505 brcmf_dbg(USB, "Enter\n"); 1506 usb_register(&brcmf_usbdrvr); 1507} 1508