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 struct mutex dev_init_lock; 148 149 int ctl_in_pipe, ctl_out_pipe; 150 struct urb *ctl_urb; /* URB for control endpoint */ 151 struct usb_ctrlrequest ctl_write; 152 struct usb_ctrlrequest ctl_read; 153 u32 ctl_urb_actual_length; 154 int ctl_urb_status; 155 int ctl_completed; 156 wait_queue_head_t ioctl_resp_wait; 157 ulong ctl_op; 158 u8 ifnum; 159 160 struct urb *bulk_urb; /* used for FW download */ 161 162 bool wowl_enabled; 163}; 164 165static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 166 struct brcmf_usbreq *req); 167 168static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 169{ 170 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 171 return bus_if->bus_priv.usb; 172} 173 174static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 175{ 176 return brcmf_usb_get_buspub(dev)->devinfo; 177} 178 179static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 180{ 181 return wait_event_timeout(devinfo->ioctl_resp_wait, 182 devinfo->ctl_completed, 183 msecs_to_jiffies(IOCTL_RESP_TIMEOUT)); 184} 185 186static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 187{ 188 if (waitqueue_active(&devinfo->ioctl_resp_wait)) 189 wake_up(&devinfo->ioctl_resp_wait); 190} 191 192static void 193brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 194{ 195 brcmf_dbg(USB, "Enter, status=%d\n", status); 196 197 if (unlikely(devinfo == NULL)) 198 return; 199 200 if (type == BRCMF_USB_CBCTL_READ) { 201 if (status == 0) 202 devinfo->bus_pub.stats.rx_ctlpkts++; 203 else 204 devinfo->bus_pub.stats.rx_ctlerrs++; 205 } else if (type == BRCMF_USB_CBCTL_WRITE) { 206 if (status == 0) 207 devinfo->bus_pub.stats.tx_ctlpkts++; 208 else 209 devinfo->bus_pub.stats.tx_ctlerrs++; 210 } 211 212 devinfo->ctl_urb_status = status; 213 devinfo->ctl_completed = true; 214 brcmf_usb_ioctl_resp_wake(devinfo); 215} 216 217static void 218brcmf_usb_ctlread_complete(struct urb *urb) 219{ 220 struct brcmf_usbdev_info *devinfo = 221 (struct brcmf_usbdev_info *)urb->context; 222 223 brcmf_dbg(USB, "Enter\n"); 224 devinfo->ctl_urb_actual_length = urb->actual_length; 225 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 226 urb->status); 227} 228 229static void 230brcmf_usb_ctlwrite_complete(struct urb *urb) 231{ 232 struct brcmf_usbdev_info *devinfo = 233 (struct brcmf_usbdev_info *)urb->context; 234 235 brcmf_dbg(USB, "Enter\n"); 236 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 237 urb->status); 238} 239 240static int 241brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 242{ 243 int ret; 244 u16 size; 245 246 brcmf_dbg(USB, "Enter\n"); 247 if (devinfo == NULL || buf == NULL || 248 len == 0 || devinfo->ctl_urb == NULL) 249 return -EINVAL; 250 251 size = len; 252 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 253 devinfo->ctl_urb->transfer_buffer_length = size; 254 devinfo->ctl_urb_status = 0; 255 devinfo->ctl_urb_actual_length = 0; 256 257 usb_fill_control_urb(devinfo->ctl_urb, 258 devinfo->usbdev, 259 devinfo->ctl_out_pipe, 260 (unsigned char *) &devinfo->ctl_write, 261 buf, size, 262 (usb_complete_t)brcmf_usb_ctlwrite_complete, 263 devinfo); 264 265 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 266 if (ret < 0) 267 brcmf_err("usb_submit_urb failed %d\n", ret); 268 269 return ret; 270} 271 272static int 273brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 274{ 275 int ret; 276 u16 size; 277 278 brcmf_dbg(USB, "Enter\n"); 279 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 280 || (devinfo->ctl_urb == NULL)) 281 return -EINVAL; 282 283 size = len; 284 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 285 devinfo->ctl_urb->transfer_buffer_length = size; 286 287 devinfo->ctl_read.bRequestType = USB_DIR_IN 288 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 289 devinfo->ctl_read.bRequest = 1; 290 291 usb_fill_control_urb(devinfo->ctl_urb, 292 devinfo->usbdev, 293 devinfo->ctl_in_pipe, 294 (unsigned char *) &devinfo->ctl_read, 295 buf, size, 296 (usb_complete_t)brcmf_usb_ctlread_complete, 297 devinfo); 298 299 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 300 if (ret < 0) 301 brcmf_err("usb_submit_urb failed %d\n", ret); 302 303 return ret; 304} 305 306static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 307{ 308 int err = 0; 309 int timeout = 0; 310 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 311 312 brcmf_dbg(USB, "Enter\n"); 313 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 314 return -EIO; 315 316 if (test_and_set_bit(0, &devinfo->ctl_op)) 317 return -EIO; 318 319 devinfo->ctl_completed = false; 320 err = brcmf_usb_send_ctl(devinfo, buf, len); 321 if (err) { 322 brcmf_err("fail %d bytes: %d\n", err, len); 323 clear_bit(0, &devinfo->ctl_op); 324 return err; 325 } 326 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 327 clear_bit(0, &devinfo->ctl_op); 328 if (!timeout) { 329 brcmf_err("Txctl wait timed out\n"); 330 err = -EIO; 331 } 332 return err; 333} 334 335static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 336{ 337 int err = 0; 338 int timeout = 0; 339 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 340 341 brcmf_dbg(USB, "Enter\n"); 342 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 343 return -EIO; 344 345 if (test_and_set_bit(0, &devinfo->ctl_op)) 346 return -EIO; 347 348 devinfo->ctl_completed = false; 349 err = brcmf_usb_recv_ctl(devinfo, buf, len); 350 if (err) { 351 brcmf_err("fail %d bytes: %d\n", err, len); 352 clear_bit(0, &devinfo->ctl_op); 353 return err; 354 } 355 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 356 err = devinfo->ctl_urb_status; 357 clear_bit(0, &devinfo->ctl_op); 358 if (!timeout) { 359 brcmf_err("rxctl wait timed out\n"); 360 err = -EIO; 361 } 362 if (!err) 363 return devinfo->ctl_urb_actual_length; 364 else 365 return err; 366} 367 368static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 369 struct list_head *q, int *counter) 370{ 371 unsigned long flags; 372 struct brcmf_usbreq *req; 373 spin_lock_irqsave(&devinfo->qlock, flags); 374 if (list_empty(q)) { 375 spin_unlock_irqrestore(&devinfo->qlock, flags); 376 return NULL; 377 } 378 req = list_entry(q->next, struct brcmf_usbreq, list); 379 list_del_init(q->next); 380 if (counter) 381 (*counter)--; 382 spin_unlock_irqrestore(&devinfo->qlock, flags); 383 return req; 384 385} 386 387static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 388 struct list_head *q, struct brcmf_usbreq *req, 389 int *counter) 390{ 391 unsigned long flags; 392 spin_lock_irqsave(&devinfo->qlock, flags); 393 list_add_tail(&req->list, q); 394 if (counter) 395 (*counter)++; 396 spin_unlock_irqrestore(&devinfo->qlock, flags); 397} 398 399static struct brcmf_usbreq * 400brcmf_usbdev_qinit(struct list_head *q, int qsize) 401{ 402 int i; 403 struct brcmf_usbreq *req, *reqs; 404 405 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 406 if (reqs == NULL) 407 return NULL; 408 409 req = reqs; 410 411 for (i = 0; i < qsize; i++) { 412 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 413 if (!req->urb) 414 goto fail; 415 416 INIT_LIST_HEAD(&req->list); 417 list_add_tail(&req->list, q); 418 req++; 419 } 420 return reqs; 421fail: 422 brcmf_err("fail!\n"); 423 while (!list_empty(q)) { 424 req = list_entry(q->next, struct brcmf_usbreq, list); 425 if (req) 426 usb_free_urb(req->urb); 427 list_del(q->next); 428 } 429 return NULL; 430 431} 432 433static void brcmf_usb_free_q(struct list_head *q, bool pending) 434{ 435 struct brcmf_usbreq *req, *next; 436 int i = 0; 437 list_for_each_entry_safe(req, next, q, list) { 438 if (!req->urb) { 439 brcmf_err("bad req\n"); 440 break; 441 } 442 i++; 443 if (pending) { 444 usb_kill_urb(req->urb); 445 } else { 446 usb_free_urb(req->urb); 447 list_del_init(&req->list); 448 } 449 } 450} 451 452static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 453 struct brcmf_usbreq *req) 454{ 455 unsigned long flags; 456 457 spin_lock_irqsave(&devinfo->qlock, flags); 458 list_del_init(&req->list); 459 spin_unlock_irqrestore(&devinfo->qlock, flags); 460} 461 462 463static void brcmf_usb_tx_complete(struct urb *urb) 464{ 465 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 466 struct brcmf_usbdev_info *devinfo = req->devinfo; 467 unsigned long flags; 468 469 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 470 req->skb); 471 brcmf_usb_del_fromq(devinfo, req); 472 473 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0); 474 req->skb = NULL; 475 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 476 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 477 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 478 devinfo->tx_flowblock) { 479 brcmf_txflowblock(devinfo->dev, false); 480 devinfo->tx_flowblock = false; 481 } 482 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 483} 484 485static void brcmf_usb_rx_complete(struct urb *urb) 486{ 487 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 488 struct brcmf_usbdev_info *devinfo = req->devinfo; 489 struct sk_buff *skb; 490 491 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 492 brcmf_usb_del_fromq(devinfo, req); 493 skb = req->skb; 494 req->skb = NULL; 495 496 /* zero lenght packets indicate usb "failure". Do not refill */ 497 if (urb->status != 0 || !urb->actual_length) { 498 brcmu_pkt_buf_free_skb(skb); 499 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 500 return; 501 } 502 503 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { 504 skb_put(skb, urb->actual_length); 505 brcmf_rx_frame(devinfo->dev, skb); 506 brcmf_usb_rx_refill(devinfo, req); 507 } else { 508 brcmu_pkt_buf_free_skb(skb); 509 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 510 } 511 return; 512 513} 514 515static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 516 struct brcmf_usbreq *req) 517{ 518 struct sk_buff *skb; 519 int ret; 520 521 if (!req || !devinfo) 522 return; 523 524 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 525 if (!skb) { 526 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 527 return; 528 } 529 req->skb = skb; 530 531 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 532 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 533 req); 534 req->devinfo = devinfo; 535 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 536 537 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 538 if (ret) { 539 brcmf_usb_del_fromq(devinfo, req); 540 brcmu_pkt_buf_free_skb(req->skb); 541 req->skb = NULL; 542 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 543 } 544 return; 545} 546 547static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 548{ 549 struct brcmf_usbreq *req; 550 551 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 552 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 553 return; 554 } 555 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 556 brcmf_usb_rx_refill(devinfo, req); 557} 558 559static void 560brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 561{ 562 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 563 int old_state; 564 565 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 566 devinfo->bus_pub.state, state); 567 568 if (devinfo->bus_pub.state == state) 569 return; 570 571 old_state = devinfo->bus_pub.state; 572 devinfo->bus_pub.state = state; 573 574 /* update state of upper layer */ 575 if (state == BRCMFMAC_USB_STATE_DOWN) { 576 brcmf_dbg(USB, "DBUS is down\n"); 577 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 578 } else if (state == BRCMFMAC_USB_STATE_UP) { 579 brcmf_dbg(USB, "DBUS is up\n"); 580 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 581 } else { 582 brcmf_dbg(USB, "DBUS current state=%d\n", state); 583 } 584} 585 586static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 587{ 588 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 589 struct brcmf_usbreq *req; 590 int ret; 591 unsigned long flags; 592 593 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 594 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 595 ret = -EIO; 596 goto fail; 597 } 598 599 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 600 &devinfo->tx_freecount); 601 if (!req) { 602 brcmf_err("no req to send\n"); 603 ret = -ENOMEM; 604 goto fail; 605 } 606 607 req->skb = skb; 608 req->devinfo = devinfo; 609 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 610 skb->data, skb->len, brcmf_usb_tx_complete, req); 611 req->urb->transfer_flags |= URB_ZERO_PACKET; 612 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 613 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 614 if (ret) { 615 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 616 brcmf_usb_del_fromq(devinfo, req); 617 req->skb = NULL; 618 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 619 &devinfo->tx_freecount); 620 goto fail; 621 } 622 623 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 624 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 625 !devinfo->tx_flowblock) { 626 brcmf_txflowblock(dev, true); 627 devinfo->tx_flowblock = true; 628 } 629 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 630 return 0; 631 632fail: 633 return ret; 634} 635 636 637static int brcmf_usb_up(struct device *dev) 638{ 639 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 640 641 brcmf_dbg(USB, "Enter\n"); 642 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 643 return 0; 644 645 /* Success, indicate devinfo is fully up */ 646 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 647 648 if (devinfo->ctl_urb) { 649 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 650 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 651 652 /* CTL Write */ 653 devinfo->ctl_write.bRequestType = 654 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 655 devinfo->ctl_write.bRequest = 0; 656 devinfo->ctl_write.wValue = cpu_to_le16(0); 657 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 658 659 /* CTL Read */ 660 devinfo->ctl_read.bRequestType = 661 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 662 devinfo->ctl_read.bRequest = 1; 663 devinfo->ctl_read.wValue = cpu_to_le16(0); 664 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 665 } 666 brcmf_usb_rx_fill_all(devinfo); 667 return 0; 668} 669 670static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 671{ 672 if (devinfo->ctl_urb) 673 usb_kill_urb(devinfo->ctl_urb); 674 if (devinfo->bulk_urb) 675 usb_kill_urb(devinfo->bulk_urb); 676 brcmf_usb_free_q(&devinfo->tx_postq, true); 677 brcmf_usb_free_q(&devinfo->rx_postq, true); 678} 679 680static void brcmf_usb_down(struct device *dev) 681{ 682 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 683 684 brcmf_dbg(USB, "Enter\n"); 685 if (devinfo == NULL) 686 return; 687 688 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 689 return; 690 691 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 692 693 brcmf_cancel_all_urbs(devinfo); 694} 695 696static void 697brcmf_usb_sync_complete(struct urb *urb) 698{ 699 struct brcmf_usbdev_info *devinfo = 700 (struct brcmf_usbdev_info *)urb->context; 701 702 devinfo->ctl_completed = true; 703 brcmf_usb_ioctl_resp_wake(devinfo); 704} 705 706static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 707 void *buffer, int buflen) 708{ 709 int ret; 710 char *tmpbuf; 711 u16 size; 712 713 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 714 return -EINVAL; 715 716 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 717 if (!tmpbuf) 718 return -ENOMEM; 719 720 size = buflen; 721 devinfo->ctl_urb->transfer_buffer_length = size; 722 723 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 724 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 725 USB_RECIP_INTERFACE; 726 devinfo->ctl_read.bRequest = cmd; 727 728 usb_fill_control_urb(devinfo->ctl_urb, 729 devinfo->usbdev, 730 usb_rcvctrlpipe(devinfo->usbdev, 0), 731 (unsigned char *) &devinfo->ctl_read, 732 (void *) tmpbuf, size, 733 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 734 735 devinfo->ctl_completed = false; 736 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 737 if (ret < 0) { 738 brcmf_err("usb_submit_urb failed %d\n", ret); 739 goto finalize; 740 } 741 742 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 743 usb_kill_urb(devinfo->ctl_urb); 744 ret = -ETIMEDOUT; 745 } else { 746 memcpy(buffer, tmpbuf, buflen); 747 } 748 749finalize: 750 kfree(tmpbuf); 751 return ret; 752} 753 754static bool 755brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 756{ 757 struct bootrom_id_le id; 758 u32 chipid, chiprev; 759 760 brcmf_dbg(USB, "Enter\n"); 761 762 if (devinfo == NULL) 763 return false; 764 765 /* Check if firmware downloaded already by querying runtime ID */ 766 id.chip = cpu_to_le32(0xDEAD); 767 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 768 769 chipid = le32_to_cpu(id.chip); 770 chiprev = le32_to_cpu(id.chiprev); 771 772 if ((chipid & 0x4300) == 0x4300) 773 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 774 else 775 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 776 if (chipid == BRCMF_POSTBOOT_ID) { 777 brcmf_dbg(USB, "firmware already downloaded\n"); 778 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 779 return false; 780 } else { 781 devinfo->bus_pub.devid = chipid; 782 devinfo->bus_pub.chiprev = chiprev; 783 } 784 return true; 785} 786 787static int 788brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 789{ 790 struct bootrom_id_le id; 791 u32 loop_cnt; 792 int err; 793 794 brcmf_dbg(USB, "Enter\n"); 795 796 loop_cnt = 0; 797 do { 798 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 799 loop_cnt++; 800 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 801 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 802 if ((err) && (err != -ETIMEDOUT)) 803 return err; 804 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 805 break; 806 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 807 808 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 809 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 810 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 811 812 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 813 return 0; 814 } else { 815 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 816 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 817 return -EINVAL; 818 } 819} 820 821 822static int 823brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 824{ 825 int ret; 826 827 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 828 return -EINVAL; 829 830 /* Prepare the URB */ 831 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 832 devinfo->tx_pipe, buffer, len, 833 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 834 835 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 836 837 devinfo->ctl_completed = false; 838 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 839 if (ret) { 840 brcmf_err("usb_submit_urb failed %d\n", ret); 841 return ret; 842 } 843 ret = brcmf_usb_ioctl_resp_wait(devinfo); 844 return (ret == 0); 845} 846 847static int 848brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 849{ 850 unsigned int sendlen, sent, dllen; 851 char *bulkchunk = NULL, *dlpos; 852 struct rdl_state_le state; 853 u32 rdlstate, rdlbytes; 854 int err = 0; 855 856 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 857 858 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 859 if (bulkchunk == NULL) { 860 err = -ENOMEM; 861 goto fail; 862 } 863 864 /* 1) Prepare USB boot loader for runtime image */ 865 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 866 867 rdlstate = le32_to_cpu(state.state); 868 rdlbytes = le32_to_cpu(state.bytes); 869 870 /* 2) Check we are in the Waiting state */ 871 if (rdlstate != DL_WAITING) { 872 brcmf_err("Failed to DL_START\n"); 873 err = -EINVAL; 874 goto fail; 875 } 876 sent = 0; 877 dlpos = fw; 878 dllen = fwlen; 879 880 /* Get chip id and rev */ 881 while (rdlbytes != dllen) { 882 /* Wait until the usb device reports it received all 883 * the bytes we sent */ 884 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 885 if ((dllen-sent) < TRX_RDL_CHUNK) 886 sendlen = dllen-sent; 887 else 888 sendlen = TRX_RDL_CHUNK; 889 890 /* simply avoid having to send a ZLP by ensuring we 891 * never have an even 892 * multiple of 64 893 */ 894 if (!(sendlen % 64)) 895 sendlen -= 4; 896 897 /* send data */ 898 memcpy(bulkchunk, dlpos, sendlen); 899 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 900 sendlen)) { 901 brcmf_err("send_bulk failed\n"); 902 err = -EINVAL; 903 goto fail; 904 } 905 906 dlpos += sendlen; 907 sent += sendlen; 908 } 909 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 910 sizeof(state)); 911 if (err) { 912 brcmf_err("DL_GETSTATE Failed\n"); 913 goto fail; 914 } 915 916 rdlstate = le32_to_cpu(state.state); 917 rdlbytes = le32_to_cpu(state.bytes); 918 919 /* restart if an error is reported */ 920 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 921 brcmf_err("Bad Hdr or Bad CRC state %d\n", 922 rdlstate); 923 err = -EINVAL; 924 goto fail; 925 } 926 } 927 928fail: 929 kfree(bulkchunk); 930 brcmf_dbg(USB, "Exit, err=%d\n", err); 931 return err; 932} 933 934static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 935{ 936 int err; 937 938 brcmf_dbg(USB, "Enter\n"); 939 940 if (devinfo == NULL) 941 return -EINVAL; 942 943 if (devinfo->bus_pub.devid == 0xDEAD) 944 return -EINVAL; 945 946 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 947 if (err == 0) 948 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 949 else 950 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 951 brcmf_dbg(USB, "Exit, err=%d\n", err); 952 953 return err; 954} 955 956static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 957{ 958 struct rdl_state_le state; 959 960 brcmf_dbg(USB, "Enter\n"); 961 if (!devinfo) 962 return -EINVAL; 963 964 if (devinfo->bus_pub.devid == 0xDEAD) 965 return -EINVAL; 966 967 /* Check we are runnable */ 968 state.state = 0; 969 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 970 971 /* Start the image */ 972 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 973 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 974 return -ENODEV; 975 if (brcmf_usb_resetcfg(devinfo)) 976 return -ENODEV; 977 /* The Dongle may go for re-enumeration. */ 978 } else { 979 brcmf_err("Dongle not runnable\n"); 980 return -EINVAL; 981 } 982 brcmf_dbg(USB, "Exit\n"); 983 return 0; 984} 985 986static bool brcmf_usb_chip_support(int chipid, int chiprev) 987{ 988 switch(chipid) { 989 case BRCM_CC_43143_CHIP_ID: 990 return true; 991 case BRCM_CC_43235_CHIP_ID: 992 case BRCM_CC_43236_CHIP_ID: 993 case BRCM_CC_43238_CHIP_ID: 994 return (chiprev == 3); 995 case BRCM_CC_43242_CHIP_ID: 996 return true; 997 case BRCM_CC_43566_CHIP_ID: 998 case BRCM_CC_43569_CHIP_ID: 999 return true; 1000 default: 1001 break; 1002 } 1003 return false; 1004} 1005 1006static int 1007brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1008{ 1009 int devid, chiprev; 1010 int err; 1011 1012 brcmf_dbg(USB, "Enter\n"); 1013 if (devinfo == NULL) 1014 return -ENODEV; 1015 1016 devid = devinfo->bus_pub.devid; 1017 chiprev = devinfo->bus_pub.chiprev; 1018 1019 if (!brcmf_usb_chip_support(devid, chiprev)) { 1020 brcmf_err("unsupported chip %d rev %d\n", 1021 devid, chiprev); 1022 return -EINVAL; 1023 } 1024 1025 if (!devinfo->image) { 1026 brcmf_err("No firmware!\n"); 1027 return -ENOENT; 1028 } 1029 1030 err = brcmf_usb_dlstart(devinfo, 1031 (u8 *)devinfo->image, devinfo->image_len); 1032 if (err == 0) 1033 err = brcmf_usb_dlrun(devinfo); 1034 return err; 1035} 1036 1037 1038static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1039{ 1040 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1041 1042 /* free the URBS */ 1043 brcmf_usb_free_q(&devinfo->rx_freeq, false); 1044 brcmf_usb_free_q(&devinfo->tx_freeq, false); 1045 1046 usb_free_urb(devinfo->ctl_urb); 1047 usb_free_urb(devinfo->bulk_urb); 1048 1049 kfree(devinfo->tx_reqs); 1050 kfree(devinfo->rx_reqs); 1051} 1052 1053 1054static int check_file(const u8 *headers) 1055{ 1056 struct trx_header_le *trx; 1057 int actual_len = -1; 1058 1059 brcmf_dbg(USB, "Enter\n"); 1060 /* Extract trx header */ 1061 trx = (struct trx_header_le *) headers; 1062 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1063 return -1; 1064 1065 headers += sizeof(struct trx_header_le); 1066 1067 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1068 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1069 return actual_len + sizeof(struct trx_header_le); 1070 } 1071 return -1; 1072} 1073 1074static const char *brcmf_usb_get_fwname(struct brcmf_usbdev_info *devinfo) 1075{ 1076 switch (devinfo->bus_pub.devid) { 1077 case BRCM_CC_43143_CHIP_ID: 1078 return BRCMF_USB_43143_FW_NAME; 1079 case BRCM_CC_43235_CHIP_ID: 1080 case BRCM_CC_43236_CHIP_ID: 1081 case BRCM_CC_43238_CHIP_ID: 1082 return BRCMF_USB_43236_FW_NAME; 1083 case BRCM_CC_43242_CHIP_ID: 1084 return BRCMF_USB_43242_FW_NAME; 1085 case BRCM_CC_43566_CHIP_ID: 1086 case BRCM_CC_43569_CHIP_ID: 1087 return BRCMF_USB_43569_FW_NAME; 1088 default: 1089 return NULL; 1090 } 1091} 1092 1093 1094static 1095struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1096 int nrxq, int ntxq) 1097{ 1098 brcmf_dbg(USB, "Enter\n"); 1099 1100 devinfo->bus_pub.nrxq = nrxq; 1101 devinfo->rx_low_watermark = nrxq / 2; 1102 devinfo->bus_pub.devinfo = devinfo; 1103 devinfo->bus_pub.ntxq = ntxq; 1104 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1105 1106 /* flow control when too many tx urbs posted */ 1107 devinfo->tx_low_watermark = ntxq / 4; 1108 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1109 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1110 1111 /* Initialize other structure content */ 1112 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1113 1114 /* Initialize the spinlocks */ 1115 spin_lock_init(&devinfo->qlock); 1116 spin_lock_init(&devinfo->tx_flowblock_lock); 1117 1118 INIT_LIST_HEAD(&devinfo->rx_freeq); 1119 INIT_LIST_HEAD(&devinfo->rx_postq); 1120 1121 INIT_LIST_HEAD(&devinfo->tx_freeq); 1122 INIT_LIST_HEAD(&devinfo->tx_postq); 1123 1124 devinfo->tx_flowblock = false; 1125 1126 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1127 if (!devinfo->rx_reqs) 1128 goto error; 1129 1130 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1131 if (!devinfo->tx_reqs) 1132 goto error; 1133 devinfo->tx_freecount = ntxq; 1134 1135 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1136 if (!devinfo->ctl_urb) { 1137 brcmf_err("usb_alloc_urb (ctl) failed\n"); 1138 goto error; 1139 } 1140 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1141 if (!devinfo->bulk_urb) { 1142 brcmf_err("usb_alloc_urb (bulk) failed\n"); 1143 goto error; 1144 } 1145 1146 return &devinfo->bus_pub; 1147 1148error: 1149 brcmf_err("failed!\n"); 1150 brcmf_usb_detach(devinfo); 1151 return NULL; 1152} 1153 1154static void brcmf_usb_wowl_config(struct device *dev, bool enabled) 1155{ 1156 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 1157 1158 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); 1159 devinfo->wowl_enabled = enabled; 1160 if (enabled) 1161 device_set_wakeup_enable(devinfo->dev, true); 1162 else 1163 device_set_wakeup_enable(devinfo->dev, false); 1164} 1165 1166static struct brcmf_bus_ops brcmf_usb_bus_ops = { 1167 .txdata = brcmf_usb_tx, 1168 .stop = brcmf_usb_down, 1169 .txctl = brcmf_usb_tx_ctlpkt, 1170 .rxctl = brcmf_usb_rx_ctlpkt, 1171 .wowl_config = brcmf_usb_wowl_config, 1172}; 1173 1174static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo) 1175{ 1176 int ret; 1177 1178 /* Attach to the common driver interface */ 1179 ret = brcmf_attach(devinfo->dev); 1180 if (ret) { 1181 brcmf_err("brcmf_attach failed\n"); 1182 return ret; 1183 } 1184 1185 ret = brcmf_usb_up(devinfo->dev); 1186 if (ret) 1187 goto fail; 1188 1189 ret = brcmf_bus_start(devinfo->dev); 1190 if (ret) 1191 goto fail; 1192 1193 return 0; 1194fail: 1195 brcmf_detach(devinfo->dev); 1196 return ret; 1197} 1198 1199static void brcmf_usb_probe_phase2(struct device *dev, 1200 const struct firmware *fw, 1201 void *nvram, u32 nvlen) 1202{ 1203 struct brcmf_bus *bus = dev_get_drvdata(dev); 1204 struct brcmf_usbdev_info *devinfo; 1205 int ret; 1206 1207 brcmf_dbg(USB, "Start fw downloading\n"); 1208 1209 devinfo = bus->bus_priv.usb->devinfo; 1210 ret = check_file(fw->data); 1211 if (ret < 0) { 1212 brcmf_err("invalid firmware\n"); 1213 release_firmware(fw); 1214 goto error; 1215 } 1216 1217 devinfo->image = fw->data; 1218 devinfo->image_len = fw->size; 1219 1220 ret = brcmf_usb_fw_download(devinfo); 1221 release_firmware(fw); 1222 if (ret) 1223 goto error; 1224 1225 ret = brcmf_usb_bus_setup(devinfo); 1226 if (ret) 1227 goto error; 1228 1229 mutex_unlock(&devinfo->dev_init_lock); 1230 return; 1231error: 1232 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1233 mutex_unlock(&devinfo->dev_init_lock); 1234 device_release_driver(dev); 1235} 1236 1237static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) 1238{ 1239 struct brcmf_bus *bus = NULL; 1240 struct brcmf_usbdev *bus_pub = NULL; 1241 struct device *dev = devinfo->dev; 1242 int ret; 1243 1244 brcmf_dbg(USB, "Enter\n"); 1245 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1246 if (!bus_pub) 1247 return -ENODEV; 1248 1249 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1250 if (!bus) { 1251 ret = -ENOMEM; 1252 goto fail; 1253 } 1254 1255 bus->dev = dev; 1256 bus_pub->bus = bus; 1257 bus->bus_priv.usb = bus_pub; 1258 dev_set_drvdata(dev, bus); 1259 bus->ops = &brcmf_usb_bus_ops; 1260 bus->proto_type = BRCMF_PROTO_BCDC; 1261 bus->always_use_fws_queue = true; 1262#ifdef CONFIG_PM 1263 bus->wowl_supported = true; 1264#endif 1265 1266 if (!brcmf_usb_dlneeded(devinfo)) { 1267 ret = brcmf_usb_bus_setup(devinfo); 1268 if (ret) 1269 goto fail; 1270 /* we are done */ 1271 mutex_unlock(&devinfo->dev_init_lock); 1272 return 0; 1273 } 1274 bus->chip = bus_pub->devid; 1275 bus->chiprev = bus_pub->chiprev; 1276 1277 /* request firmware here */ 1278 ret = brcmf_fw_get_firmwares(dev, 0, brcmf_usb_get_fwname(devinfo), 1279 NULL, brcmf_usb_probe_phase2); 1280 if (ret) { 1281 brcmf_err("firmware request failed: %d\n", ret); 1282 goto fail; 1283 } 1284 1285 return 0; 1286 1287fail: 1288 /* Release resources in reverse order */ 1289 kfree(bus); 1290 brcmf_usb_detach(devinfo); 1291 return ret; 1292} 1293 1294static void 1295brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1296{ 1297 if (!devinfo) 1298 return; 1299 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1300 1301 brcmf_detach(devinfo->dev); 1302 kfree(devinfo->bus_pub.bus); 1303 brcmf_usb_detach(devinfo); 1304} 1305 1306static int 1307brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1308{ 1309 struct usb_device *usb = interface_to_usbdev(intf); 1310 struct brcmf_usbdev_info *devinfo; 1311 struct usb_interface_descriptor *desc; 1312 struct usb_endpoint_descriptor *endpoint; 1313 int ret = 0; 1314 u32 num_of_eps; 1315 u8 endpoint_num, ep; 1316 1317 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1318 1319 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1320 if (devinfo == NULL) 1321 return -ENOMEM; 1322 1323 devinfo->usbdev = usb; 1324 devinfo->dev = &usb->dev; 1325 /* Take an init lock, to protect for disconnect while still loading. 1326 * Necessary because of the asynchronous firmware load construction 1327 */ 1328 mutex_init(&devinfo->dev_init_lock); 1329 mutex_lock(&devinfo->dev_init_lock); 1330 1331 usb_set_intfdata(intf, devinfo); 1332 1333 /* Check that the device supports only one configuration */ 1334 if (usb->descriptor.bNumConfigurations != 1) { 1335 brcmf_err("Number of configurations: %d not supported\n", 1336 usb->descriptor.bNumConfigurations); 1337 ret = -ENODEV; 1338 goto fail; 1339 } 1340 1341 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1342 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1343 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1344 brcmf_err("Device class: 0x%x not supported\n", 1345 usb->descriptor.bDeviceClass); 1346 ret = -ENODEV; 1347 goto fail; 1348 } 1349 1350 desc = &intf->altsetting[0].desc; 1351 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1352 (desc->bInterfaceSubClass != 2) || 1353 (desc->bInterfaceProtocol != 0xff)) { 1354 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1355 desc->bInterfaceNumber, desc->bInterfaceClass, 1356 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1357 ret = -ENODEV; 1358 goto fail; 1359 } 1360 1361 num_of_eps = desc->bNumEndpoints; 1362 for (ep = 0; ep < num_of_eps; ep++) { 1363 endpoint = &intf->altsetting[0].endpoint[ep].desc; 1364 endpoint_num = usb_endpoint_num(endpoint); 1365 if (!usb_endpoint_xfer_bulk(endpoint)) 1366 continue; 1367 if (usb_endpoint_dir_in(endpoint)) { 1368 if (!devinfo->rx_pipe) 1369 devinfo->rx_pipe = 1370 usb_rcvbulkpipe(usb, endpoint_num); 1371 } else { 1372 if (!devinfo->tx_pipe) 1373 devinfo->tx_pipe = 1374 usb_sndbulkpipe(usb, endpoint_num); 1375 } 1376 } 1377 if (devinfo->rx_pipe == 0) { 1378 brcmf_err("No RX (in) Bulk EP found\n"); 1379 ret = -ENODEV; 1380 goto fail; 1381 } 1382 if (devinfo->tx_pipe == 0) { 1383 brcmf_err("No TX (out) Bulk EP found\n"); 1384 ret = -ENODEV; 1385 goto fail; 1386 } 1387 1388 devinfo->ifnum = desc->bInterfaceNumber; 1389 1390 if (usb->speed == USB_SPEED_SUPER) 1391 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1392 else if (usb->speed == USB_SPEED_HIGH) 1393 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1394 else 1395 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1396 1397 ret = brcmf_usb_probe_cb(devinfo); 1398 if (ret) 1399 goto fail; 1400 1401 /* Success */ 1402 return 0; 1403 1404fail: 1405 mutex_unlock(&devinfo->dev_init_lock); 1406 kfree(devinfo); 1407 usb_set_intfdata(intf, NULL); 1408 return ret; 1409} 1410 1411static void 1412brcmf_usb_disconnect(struct usb_interface *intf) 1413{ 1414 struct brcmf_usbdev_info *devinfo; 1415 1416 brcmf_dbg(USB, "Enter\n"); 1417 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1418 1419 if (devinfo) { 1420 mutex_lock(&devinfo->dev_init_lock); 1421 /* Make sure that devinfo still exists. Firmware probe routines 1422 * may have released the device and cleared the intfdata. 1423 */ 1424 if (!usb_get_intfdata(intf)) 1425 goto done; 1426 1427 brcmf_usb_disconnect_cb(devinfo); 1428 kfree(devinfo); 1429 } 1430done: 1431 brcmf_dbg(USB, "Exit\n"); 1432} 1433 1434/* 1435 * only need to signal the bus being down and update the state. 1436 */ 1437static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1438{ 1439 struct usb_device *usb = interface_to_usbdev(intf); 1440 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1441 1442 brcmf_dbg(USB, "Enter\n"); 1443 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1444 if (devinfo->wowl_enabled) 1445 brcmf_cancel_all_urbs(devinfo); 1446 else 1447 brcmf_detach(&usb->dev); 1448 return 0; 1449} 1450 1451/* 1452 * (re-) start the bus. 1453 */ 1454static int brcmf_usb_resume(struct usb_interface *intf) 1455{ 1456 struct usb_device *usb = interface_to_usbdev(intf); 1457 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1458 1459 brcmf_dbg(USB, "Enter\n"); 1460 if (!devinfo->wowl_enabled) 1461 return brcmf_usb_bus_setup(devinfo); 1462 1463 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1464 brcmf_usb_rx_fill_all(devinfo); 1465 return 0; 1466} 1467 1468static int brcmf_usb_reset_resume(struct usb_interface *intf) 1469{ 1470 struct usb_device *usb = interface_to_usbdev(intf); 1471 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1472 1473 brcmf_dbg(USB, "Enter\n"); 1474 1475 return brcmf_fw_get_firmwares(&usb->dev, 0, 1476 brcmf_usb_get_fwname(devinfo), NULL, 1477 brcmf_usb_probe_phase2); 1478} 1479 1480#define BRCMF_USB_DEVICE(dev_id) \ 1481 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } 1482 1483static struct usb_device_id brcmf_usb_devid_table[] = { 1484 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1485 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1486 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1487 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1488 /* special entry for device with firmware loaded and running */ 1489 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1490 { /* end: all zeroes */ } 1491}; 1492 1493MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1494MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME); 1495MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME); 1496MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME); 1497MODULE_FIRMWARE(BRCMF_USB_43569_FW_NAME); 1498 1499static struct usb_driver brcmf_usbdrvr = { 1500 .name = KBUILD_MODNAME, 1501 .probe = brcmf_usb_probe, 1502 .disconnect = brcmf_usb_disconnect, 1503 .id_table = brcmf_usb_devid_table, 1504 .suspend = brcmf_usb_suspend, 1505 .resume = brcmf_usb_resume, 1506 .reset_resume = brcmf_usb_reset_resume, 1507 .supports_autosuspend = 1, 1508 .disable_hub_initiated_lpm = 1, 1509}; 1510 1511static int brcmf_usb_reset_device(struct device *dev, void *notused) 1512{ 1513 /* device past is the usb interface so we 1514 * need to use parent here. 1515 */ 1516 brcmf_dev_reset(dev->parent); 1517 return 0; 1518} 1519 1520void brcmf_usb_exit(void) 1521{ 1522 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; 1523 int ret; 1524 1525 brcmf_dbg(USB, "Enter\n"); 1526 ret = driver_for_each_device(drv, NULL, NULL, 1527 brcmf_usb_reset_device); 1528 usb_deregister(&brcmf_usbdrvr); 1529} 1530 1531void brcmf_usb_register(void) 1532{ 1533 brcmf_dbg(USB, "Enter\n"); 1534 usb_register(&brcmf_usbdrvr); 1535} 1536