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 #include "core.h" 31 #include "common.h" 32 #include "bcdc.h" 33 34 35 #define IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000) 36 37 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */ 38 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10 39 40 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle 41 has boot up */ 42 #define BRCMF_USB_NRXQ 50 43 #define BRCMF_USB_NTXQ 50 44 45 #define BRCMF_USB_CBCTL_WRITE 0 46 #define BRCMF_USB_CBCTL_READ 1 47 #define BRCMF_USB_MAX_PKT_SIZE 1600 48 49 BRCMF_FW_DEF(43143, "brcmfmac43143"); 50 BRCMF_FW_DEF(43236B, "brcmfmac43236b"); 51 BRCMF_FW_DEF(43242A, "brcmfmac43242a"); 52 BRCMF_FW_DEF(43569, "brcmfmac43569"); 53 BRCMF_FW_DEF(4373, "brcmfmac4373"); 54 55 static const struct brcmf_firmware_mapping brcmf_usb_fwnames[] = { 56 BRCMF_FW_ENTRY(BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, 43143), 57 BRCMF_FW_ENTRY(BRCM_CC_43235_CHIP_ID, 0x00000008, 43236B), 58 BRCMF_FW_ENTRY(BRCM_CC_43236_CHIP_ID, 0x00000008, 43236B), 59 BRCMF_FW_ENTRY(BRCM_CC_43238_CHIP_ID, 0x00000008, 43236B), 60 BRCMF_FW_ENTRY(BRCM_CC_43242_CHIP_ID, 0xFFFFFFFF, 43242A), 61 BRCMF_FW_ENTRY(BRCM_CC_43566_CHIP_ID, 0xFFFFFFFF, 43569), 62 BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43569), 63 BRCMF_FW_ENTRY(CY_CC_4373_CHIP_ID, 0xFFFFFFFF, 4373) 64 }; 65 66 #define TRX_MAGIC 0x30524448 /* "HDR0" */ 67 #define TRX_MAX_OFFSET 3 /* Max number of file offsets */ 68 #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */ 69 #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */ 70 #define TRX_OFFSETS_DLFWLEN_IDX 0 71 72 /* Control messages: bRequest values */ 73 #define DL_GETSTATE 0 /* returns the rdl_state_t struct */ 74 #define DL_CHECK_CRC 1 /* currently unused */ 75 #define DL_GO 2 /* execute downloaded image */ 76 #define DL_START 3 /* initialize dl state */ 77 #define DL_REBOOT 4 /* reboot the device in 2 seconds */ 78 #define DL_GETVER 5 /* returns the bootrom_id_t struct */ 79 #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset 80 * event to occur in 2 seconds. It is the 81 * responsibility of the downloaded code to 82 * clear this event 83 */ 84 #define DL_EXEC 7 /* jump to a supplied address */ 85 #define DL_RESETCFG 8 /* To support single enum on dongle 86 * - Not used by bootloader 87 */ 88 #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup 89 * if resp unavailable 90 */ 91 92 /* states */ 93 #define DL_WAITING 0 /* waiting to rx first pkt */ 94 #define DL_READY 1 /* hdr was good, waiting for more of the 95 * compressed image 96 */ 97 #define DL_BAD_HDR 2 /* hdr was corrupted */ 98 #define DL_BAD_CRC 3 /* compressed image was corrupted */ 99 #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ 100 #define DL_START_FAIL 5 /* failed to initialize correctly */ 101 #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM 102 * value 103 */ 104 #define DL_IMAGE_TOOBIG 7 /* firmware image too big */ 105 106 107 struct trx_header_le { 108 __le32 magic; /* "HDR0" */ 109 __le32 len; /* Length of file including header */ 110 __le32 crc32; /* CRC from flag_version to end of file */ 111 __le32 flag_version; /* 0:15 flags, 16:31 version */ 112 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of 113 * header 114 */ 115 }; 116 117 struct rdl_state_le { 118 __le32 state; 119 __le32 bytes; 120 }; 121 122 struct bootrom_id_le { 123 __le32 chip; /* Chip id */ 124 __le32 chiprev; /* Chip rev */ 125 __le32 ramsize; /* Size of RAM */ 126 __le32 remapbase; /* Current remap base address */ 127 __le32 boardtype; /* Type of board */ 128 __le32 boardrev; /* Board revision */ 129 }; 130 131 struct brcmf_usb_image { 132 struct list_head list; 133 s8 *fwname; 134 u8 *image; 135 int image_len; 136 }; 137 138 struct brcmf_usbdev_info { 139 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ 140 spinlock_t qlock; 141 struct list_head rx_freeq; 142 struct list_head rx_postq; 143 struct list_head tx_freeq; 144 struct list_head tx_postq; 145 uint rx_pipe, tx_pipe; 146 147 int rx_low_watermark; 148 int tx_low_watermark; 149 int tx_high_watermark; 150 int tx_freecount; 151 bool tx_flowblock; 152 spinlock_t tx_flowblock_lock; 153 154 struct brcmf_usbreq *tx_reqs; 155 struct brcmf_usbreq *rx_reqs; 156 157 char fw_name[BRCMF_FW_NAME_LEN]; 158 const u8 *image; /* buffer for combine fw and nvram */ 159 int image_len; 160 161 struct usb_device *usbdev; 162 struct device *dev; 163 struct completion dev_init_done; 164 165 int ctl_in_pipe, ctl_out_pipe; 166 struct urb *ctl_urb; /* URB for control endpoint */ 167 struct usb_ctrlrequest ctl_write; 168 struct usb_ctrlrequest ctl_read; 169 u32 ctl_urb_actual_length; 170 int ctl_urb_status; 171 int ctl_completed; 172 wait_queue_head_t ioctl_resp_wait; 173 ulong ctl_op; 174 u8 ifnum; 175 176 struct urb *bulk_urb; /* used for FW download */ 177 178 bool wowl_enabled; 179 struct brcmf_mp_device *settings; 180 }; 181 182 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 183 struct brcmf_usbreq *req); 184 185 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 186 { 187 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 188 return bus_if->bus_priv.usb; 189 } 190 191 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 192 { 193 return brcmf_usb_get_buspub(dev)->devinfo; 194 } 195 196 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 197 { 198 return wait_event_timeout(devinfo->ioctl_resp_wait, 199 devinfo->ctl_completed, IOCTL_RESP_TIMEOUT); 200 } 201 202 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 203 { 204 wake_up(&devinfo->ioctl_resp_wait); 205 } 206 207 static void 208 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 209 { 210 brcmf_dbg(USB, "Enter, status=%d\n", status); 211 212 if (unlikely(devinfo == NULL)) 213 return; 214 215 if (type == BRCMF_USB_CBCTL_READ) { 216 if (status == 0) 217 devinfo->bus_pub.stats.rx_ctlpkts++; 218 else 219 devinfo->bus_pub.stats.rx_ctlerrs++; 220 } else if (type == BRCMF_USB_CBCTL_WRITE) { 221 if (status == 0) 222 devinfo->bus_pub.stats.tx_ctlpkts++; 223 else 224 devinfo->bus_pub.stats.tx_ctlerrs++; 225 } 226 227 devinfo->ctl_urb_status = status; 228 devinfo->ctl_completed = true; 229 brcmf_usb_ioctl_resp_wake(devinfo); 230 } 231 232 static void 233 brcmf_usb_ctlread_complete(struct urb *urb) 234 { 235 struct brcmf_usbdev_info *devinfo = 236 (struct brcmf_usbdev_info *)urb->context; 237 238 brcmf_dbg(USB, "Enter\n"); 239 devinfo->ctl_urb_actual_length = urb->actual_length; 240 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 241 urb->status); 242 } 243 244 static void 245 brcmf_usb_ctlwrite_complete(struct urb *urb) 246 { 247 struct brcmf_usbdev_info *devinfo = 248 (struct brcmf_usbdev_info *)urb->context; 249 250 brcmf_dbg(USB, "Enter\n"); 251 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 252 urb->status); 253 } 254 255 static int 256 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 257 { 258 int ret; 259 u16 size; 260 261 brcmf_dbg(USB, "Enter\n"); 262 if (devinfo == NULL || buf == NULL || 263 len == 0 || devinfo->ctl_urb == NULL) 264 return -EINVAL; 265 266 size = len; 267 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 268 devinfo->ctl_urb->transfer_buffer_length = size; 269 devinfo->ctl_urb_status = 0; 270 devinfo->ctl_urb_actual_length = 0; 271 272 usb_fill_control_urb(devinfo->ctl_urb, 273 devinfo->usbdev, 274 devinfo->ctl_out_pipe, 275 (unsigned char *) &devinfo->ctl_write, 276 buf, size, 277 (usb_complete_t)brcmf_usb_ctlwrite_complete, 278 devinfo); 279 280 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 281 if (ret < 0) 282 brcmf_err("usb_submit_urb failed %d\n", ret); 283 284 return ret; 285 } 286 287 static int 288 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 289 { 290 int ret; 291 u16 size; 292 293 brcmf_dbg(USB, "Enter\n"); 294 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 295 || (devinfo->ctl_urb == NULL)) 296 return -EINVAL; 297 298 size = len; 299 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 300 devinfo->ctl_urb->transfer_buffer_length = size; 301 302 devinfo->ctl_read.bRequestType = USB_DIR_IN 303 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 304 devinfo->ctl_read.bRequest = 1; 305 306 usb_fill_control_urb(devinfo->ctl_urb, 307 devinfo->usbdev, 308 devinfo->ctl_in_pipe, 309 (unsigned char *) &devinfo->ctl_read, 310 buf, size, 311 (usb_complete_t)brcmf_usb_ctlread_complete, 312 devinfo); 313 314 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 315 if (ret < 0) 316 brcmf_err("usb_submit_urb failed %d\n", ret); 317 318 return ret; 319 } 320 321 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 322 { 323 int err = 0; 324 int timeout = 0; 325 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 326 327 brcmf_dbg(USB, "Enter\n"); 328 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 329 return -EIO; 330 331 if (test_and_set_bit(0, &devinfo->ctl_op)) 332 return -EIO; 333 334 devinfo->ctl_completed = false; 335 err = brcmf_usb_send_ctl(devinfo, buf, len); 336 if (err) { 337 brcmf_err("fail %d bytes: %d\n", err, len); 338 clear_bit(0, &devinfo->ctl_op); 339 return err; 340 } 341 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 342 clear_bit(0, &devinfo->ctl_op); 343 if (!timeout) { 344 brcmf_err("Txctl wait timed out\n"); 345 err = -EIO; 346 } 347 return err; 348 } 349 350 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 351 { 352 int err = 0; 353 int timeout = 0; 354 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 355 356 brcmf_dbg(USB, "Enter\n"); 357 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) 358 return -EIO; 359 360 if (test_and_set_bit(0, &devinfo->ctl_op)) 361 return -EIO; 362 363 devinfo->ctl_completed = false; 364 err = brcmf_usb_recv_ctl(devinfo, buf, len); 365 if (err) { 366 brcmf_err("fail %d bytes: %d\n", err, len); 367 clear_bit(0, &devinfo->ctl_op); 368 return err; 369 } 370 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 371 err = devinfo->ctl_urb_status; 372 clear_bit(0, &devinfo->ctl_op); 373 if (!timeout) { 374 brcmf_err("rxctl wait timed out\n"); 375 err = -EIO; 376 } 377 if (!err) 378 return devinfo->ctl_urb_actual_length; 379 else 380 return err; 381 } 382 383 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 384 struct list_head *q, int *counter) 385 { 386 unsigned long flags; 387 struct brcmf_usbreq *req; 388 spin_lock_irqsave(&devinfo->qlock, flags); 389 if (list_empty(q)) { 390 spin_unlock_irqrestore(&devinfo->qlock, flags); 391 return NULL; 392 } 393 req = list_entry(q->next, struct brcmf_usbreq, list); 394 list_del_init(q->next); 395 if (counter) 396 (*counter)--; 397 spin_unlock_irqrestore(&devinfo->qlock, flags); 398 return req; 399 400 } 401 402 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 403 struct list_head *q, struct brcmf_usbreq *req, 404 int *counter) 405 { 406 unsigned long flags; 407 spin_lock_irqsave(&devinfo->qlock, flags); 408 list_add_tail(&req->list, q); 409 if (counter) 410 (*counter)++; 411 spin_unlock_irqrestore(&devinfo->qlock, flags); 412 } 413 414 static struct brcmf_usbreq * 415 brcmf_usbdev_qinit(struct list_head *q, int qsize) 416 { 417 int i; 418 struct brcmf_usbreq *req, *reqs; 419 420 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 421 if (reqs == NULL) 422 return NULL; 423 424 req = reqs; 425 426 for (i = 0; i < qsize; i++) { 427 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 428 if (!req->urb) 429 goto fail; 430 431 INIT_LIST_HEAD(&req->list); 432 list_add_tail(&req->list, q); 433 req++; 434 } 435 return reqs; 436 fail: 437 brcmf_err("fail!\n"); 438 while (!list_empty(q)) { 439 req = list_entry(q->next, struct brcmf_usbreq, list); 440 if (req) 441 usb_free_urb(req->urb); 442 list_del(q->next); 443 } 444 return NULL; 445 446 } 447 448 static void brcmf_usb_free_q(struct list_head *q) 449 { 450 struct brcmf_usbreq *req, *next; 451 452 list_for_each_entry_safe(req, next, q, list) { 453 if (!req->urb) { 454 brcmf_err("bad req\n"); 455 break; 456 } 457 usb_free_urb(req->urb); 458 list_del_init(&req->list); 459 } 460 } 461 462 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 463 struct brcmf_usbreq *req) 464 { 465 unsigned long flags; 466 467 spin_lock_irqsave(&devinfo->qlock, flags); 468 list_del_init(&req->list); 469 spin_unlock_irqrestore(&devinfo->qlock, flags); 470 } 471 472 473 static void brcmf_usb_tx_complete(struct urb *urb) 474 { 475 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 476 struct brcmf_usbdev_info *devinfo = req->devinfo; 477 unsigned long flags; 478 479 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 480 req->skb); 481 brcmf_usb_del_fromq(devinfo, req); 482 483 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0); 484 req->skb = NULL; 485 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 486 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 487 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 488 devinfo->tx_flowblock) { 489 brcmf_proto_bcdc_txflowblock(devinfo->dev, false); 490 devinfo->tx_flowblock = false; 491 } 492 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 493 } 494 495 static void brcmf_usb_rx_complete(struct urb *urb) 496 { 497 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 498 struct brcmf_usbdev_info *devinfo = req->devinfo; 499 struct sk_buff *skb; 500 501 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 502 brcmf_usb_del_fromq(devinfo, req); 503 skb = req->skb; 504 req->skb = NULL; 505 506 /* zero length packets indicate usb "failure". Do not refill */ 507 if (urb->status != 0 || !urb->actual_length) { 508 brcmu_pkt_buf_free_skb(skb); 509 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 510 return; 511 } 512 513 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { 514 skb_put(skb, urb->actual_length); 515 brcmf_rx_frame(devinfo->dev, skb, true); 516 brcmf_usb_rx_refill(devinfo, req); 517 } else { 518 brcmu_pkt_buf_free_skb(skb); 519 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 520 } 521 return; 522 523 } 524 525 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 526 struct brcmf_usbreq *req) 527 { 528 struct sk_buff *skb; 529 int ret; 530 531 if (!req || !devinfo) 532 return; 533 534 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 535 if (!skb) { 536 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 537 return; 538 } 539 req->skb = skb; 540 541 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 542 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 543 req); 544 req->devinfo = devinfo; 545 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 546 547 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 548 if (ret) { 549 brcmf_usb_del_fromq(devinfo, req); 550 brcmu_pkt_buf_free_skb(req->skb); 551 req->skb = NULL; 552 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 553 } 554 return; 555 } 556 557 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 558 { 559 struct brcmf_usbreq *req; 560 561 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 562 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 563 return; 564 } 565 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 566 brcmf_usb_rx_refill(devinfo, req); 567 } 568 569 static void 570 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 571 { 572 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 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 devinfo->bus_pub.state = state; 581 582 /* update state of upper layer */ 583 if (state == BRCMFMAC_USB_STATE_DOWN) { 584 brcmf_dbg(USB, "DBUS is down\n"); 585 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 586 } else if (state == BRCMFMAC_USB_STATE_UP) { 587 brcmf_dbg(USB, "DBUS is up\n"); 588 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 589 } else { 590 brcmf_dbg(USB, "DBUS current state=%d\n", state); 591 } 592 } 593 594 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 595 { 596 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 597 struct brcmf_usbreq *req; 598 int ret; 599 unsigned long flags; 600 601 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 602 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 603 ret = -EIO; 604 goto fail; 605 } 606 607 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 608 &devinfo->tx_freecount); 609 if (!req) { 610 brcmf_err("no req to send\n"); 611 ret = -ENOMEM; 612 goto fail; 613 } 614 615 req->skb = skb; 616 req->devinfo = devinfo; 617 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 618 skb->data, skb->len, brcmf_usb_tx_complete, req); 619 req->urb->transfer_flags |= URB_ZERO_PACKET; 620 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 621 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 622 if (ret) { 623 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 624 brcmf_usb_del_fromq(devinfo, req); 625 req->skb = NULL; 626 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 627 &devinfo->tx_freecount); 628 goto fail; 629 } 630 631 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 632 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 633 !devinfo->tx_flowblock) { 634 brcmf_proto_bcdc_txflowblock(dev, true); 635 devinfo->tx_flowblock = true; 636 } 637 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 638 return 0; 639 640 fail: 641 return ret; 642 } 643 644 645 static int brcmf_usb_up(struct device *dev) 646 { 647 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 648 649 brcmf_dbg(USB, "Enter\n"); 650 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 651 return 0; 652 653 /* Success, indicate devinfo is fully up */ 654 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 655 656 if (devinfo->ctl_urb) { 657 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 658 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 659 660 /* CTL Write */ 661 devinfo->ctl_write.bRequestType = 662 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 663 devinfo->ctl_write.bRequest = 0; 664 devinfo->ctl_write.wValue = cpu_to_le16(0); 665 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 666 667 /* CTL Read */ 668 devinfo->ctl_read.bRequestType = 669 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 670 devinfo->ctl_read.bRequest = 1; 671 devinfo->ctl_read.wValue = cpu_to_le16(0); 672 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 673 } 674 brcmf_usb_rx_fill_all(devinfo); 675 return 0; 676 } 677 678 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 679 { 680 int i; 681 682 if (devinfo->ctl_urb) 683 usb_kill_urb(devinfo->ctl_urb); 684 if (devinfo->bulk_urb) 685 usb_kill_urb(devinfo->bulk_urb); 686 if (devinfo->tx_reqs) 687 for (i = 0; i < devinfo->bus_pub.ntxq; i++) 688 usb_kill_urb(devinfo->tx_reqs[i].urb); 689 if (devinfo->rx_reqs) 690 for (i = 0; i < devinfo->bus_pub.nrxq; i++) 691 usb_kill_urb(devinfo->rx_reqs[i].urb); 692 } 693 694 static void brcmf_usb_down(struct device *dev) 695 { 696 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 697 698 brcmf_dbg(USB, "Enter\n"); 699 if (devinfo == NULL) 700 return; 701 702 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 703 return; 704 705 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 706 707 brcmf_cancel_all_urbs(devinfo); 708 } 709 710 static void 711 brcmf_usb_sync_complete(struct urb *urb) 712 { 713 struct brcmf_usbdev_info *devinfo = 714 (struct brcmf_usbdev_info *)urb->context; 715 716 devinfo->ctl_completed = true; 717 brcmf_usb_ioctl_resp_wake(devinfo); 718 } 719 720 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 721 void *buffer, int buflen) 722 { 723 int ret; 724 char *tmpbuf; 725 u16 size; 726 727 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 728 return -EINVAL; 729 730 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 731 if (!tmpbuf) 732 return -ENOMEM; 733 734 size = buflen; 735 devinfo->ctl_urb->transfer_buffer_length = size; 736 737 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 738 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 739 USB_RECIP_INTERFACE; 740 devinfo->ctl_read.bRequest = cmd; 741 742 usb_fill_control_urb(devinfo->ctl_urb, 743 devinfo->usbdev, 744 usb_rcvctrlpipe(devinfo->usbdev, 0), 745 (unsigned char *) &devinfo->ctl_read, 746 (void *) tmpbuf, size, 747 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 748 749 devinfo->ctl_completed = false; 750 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 751 if (ret < 0) { 752 brcmf_err("usb_submit_urb failed %d\n", ret); 753 goto finalize; 754 } 755 756 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 757 usb_kill_urb(devinfo->ctl_urb); 758 ret = -ETIMEDOUT; 759 } else { 760 memcpy(buffer, tmpbuf, buflen); 761 } 762 763 finalize: 764 kfree(tmpbuf); 765 return ret; 766 } 767 768 static bool 769 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 770 { 771 struct bootrom_id_le id; 772 u32 chipid, chiprev; 773 774 brcmf_dbg(USB, "Enter\n"); 775 776 if (devinfo == NULL) 777 return false; 778 779 /* Check if firmware downloaded already by querying runtime ID */ 780 id.chip = cpu_to_le32(0xDEAD); 781 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 782 783 chipid = le32_to_cpu(id.chip); 784 chiprev = le32_to_cpu(id.chiprev); 785 786 if ((chipid & 0x4300) == 0x4300) 787 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 788 else 789 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 790 if (chipid == BRCMF_POSTBOOT_ID) { 791 brcmf_dbg(USB, "firmware already downloaded\n"); 792 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 793 return false; 794 } else { 795 devinfo->bus_pub.devid = chipid; 796 devinfo->bus_pub.chiprev = chiprev; 797 } 798 return true; 799 } 800 801 static int 802 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 803 { 804 struct bootrom_id_le id; 805 u32 loop_cnt; 806 int err; 807 808 brcmf_dbg(USB, "Enter\n"); 809 810 loop_cnt = 0; 811 do { 812 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 813 loop_cnt++; 814 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 815 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 816 if ((err) && (err != -ETIMEDOUT)) 817 return err; 818 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 819 break; 820 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 821 822 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 823 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 824 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 825 826 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 827 return 0; 828 } else { 829 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 830 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 831 return -EINVAL; 832 } 833 } 834 835 836 static int 837 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 838 { 839 int ret; 840 841 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 842 return -EINVAL; 843 844 /* Prepare the URB */ 845 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 846 devinfo->tx_pipe, buffer, len, 847 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 848 849 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 850 851 devinfo->ctl_completed = false; 852 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 853 if (ret) { 854 brcmf_err("usb_submit_urb failed %d\n", ret); 855 return ret; 856 } 857 ret = brcmf_usb_ioctl_resp_wait(devinfo); 858 return (ret == 0); 859 } 860 861 static int 862 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 863 { 864 unsigned int sendlen, sent, dllen; 865 char *bulkchunk = NULL, *dlpos; 866 struct rdl_state_le state; 867 u32 rdlstate, rdlbytes; 868 int err = 0; 869 870 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 871 872 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 873 if (bulkchunk == NULL) { 874 err = -ENOMEM; 875 goto fail; 876 } 877 878 /* 1) Prepare USB boot loader for runtime image */ 879 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 880 881 rdlstate = le32_to_cpu(state.state); 882 rdlbytes = le32_to_cpu(state.bytes); 883 884 /* 2) Check we are in the Waiting state */ 885 if (rdlstate != DL_WAITING) { 886 brcmf_err("Failed to DL_START\n"); 887 err = -EINVAL; 888 goto fail; 889 } 890 sent = 0; 891 dlpos = fw; 892 dllen = fwlen; 893 894 /* Get chip id and rev */ 895 while (rdlbytes != dllen) { 896 /* Wait until the usb device reports it received all 897 * the bytes we sent */ 898 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 899 if ((dllen-sent) < TRX_RDL_CHUNK) 900 sendlen = dllen-sent; 901 else 902 sendlen = TRX_RDL_CHUNK; 903 904 /* simply avoid having to send a ZLP by ensuring we 905 * never have an even 906 * multiple of 64 907 */ 908 if (!(sendlen % 64)) 909 sendlen -= 4; 910 911 /* send data */ 912 memcpy(bulkchunk, dlpos, sendlen); 913 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 914 sendlen)) { 915 brcmf_err("send_bulk failed\n"); 916 err = -EINVAL; 917 goto fail; 918 } 919 920 dlpos += sendlen; 921 sent += sendlen; 922 } 923 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 924 sizeof(state)); 925 if (err) { 926 brcmf_err("DL_GETSTATE Failed\n"); 927 goto fail; 928 } 929 930 rdlstate = le32_to_cpu(state.state); 931 rdlbytes = le32_to_cpu(state.bytes); 932 933 /* restart if an error is reported */ 934 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 935 brcmf_err("Bad Hdr or Bad CRC state %d\n", 936 rdlstate); 937 err = -EINVAL; 938 goto fail; 939 } 940 } 941 942 fail: 943 kfree(bulkchunk); 944 brcmf_dbg(USB, "Exit, err=%d\n", err); 945 return err; 946 } 947 948 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 949 { 950 int err; 951 952 brcmf_dbg(USB, "Enter\n"); 953 954 if (devinfo == NULL) 955 return -EINVAL; 956 957 if (devinfo->bus_pub.devid == 0xDEAD) 958 return -EINVAL; 959 960 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 961 if (err == 0) 962 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 963 else 964 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 965 brcmf_dbg(USB, "Exit, err=%d\n", err); 966 967 return err; 968 } 969 970 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 971 { 972 struct rdl_state_le state; 973 974 brcmf_dbg(USB, "Enter\n"); 975 if (!devinfo) 976 return -EINVAL; 977 978 if (devinfo->bus_pub.devid == 0xDEAD) 979 return -EINVAL; 980 981 /* Check we are runnable */ 982 state.state = 0; 983 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 984 985 /* Start the image */ 986 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 987 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 988 return -ENODEV; 989 if (brcmf_usb_resetcfg(devinfo)) 990 return -ENODEV; 991 /* The Dongle may go for re-enumeration. */ 992 } else { 993 brcmf_err("Dongle not runnable\n"); 994 return -EINVAL; 995 } 996 brcmf_dbg(USB, "Exit\n"); 997 return 0; 998 } 999 1000 static int 1001 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1002 { 1003 int err; 1004 1005 brcmf_dbg(USB, "Enter\n"); 1006 if (devinfo == NULL) 1007 return -ENODEV; 1008 1009 if (!devinfo->image) { 1010 brcmf_err("No firmware!\n"); 1011 return -ENOENT; 1012 } 1013 1014 err = brcmf_usb_dlstart(devinfo, 1015 (u8 *)devinfo->image, devinfo->image_len); 1016 if (err == 0) 1017 err = brcmf_usb_dlrun(devinfo); 1018 return err; 1019 } 1020 1021 1022 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1023 { 1024 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1025 1026 /* free the URBS */ 1027 brcmf_usb_free_q(&devinfo->rx_freeq); 1028 brcmf_usb_free_q(&devinfo->tx_freeq); 1029 1030 usb_free_urb(devinfo->ctl_urb); 1031 usb_free_urb(devinfo->bulk_urb); 1032 1033 kfree(devinfo->tx_reqs); 1034 kfree(devinfo->rx_reqs); 1035 1036 if (devinfo->settings) 1037 brcmf_release_module_param(devinfo->settings); 1038 } 1039 1040 1041 static int check_file(const u8 *headers) 1042 { 1043 struct trx_header_le *trx; 1044 int actual_len = -1; 1045 1046 brcmf_dbg(USB, "Enter\n"); 1047 /* Extract trx header */ 1048 trx = (struct trx_header_le *) headers; 1049 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1050 return -1; 1051 1052 headers += sizeof(struct trx_header_le); 1053 1054 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1055 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1056 return actual_len + sizeof(struct trx_header_le); 1057 } 1058 return -1; 1059 } 1060 1061 1062 static 1063 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1064 int nrxq, int ntxq) 1065 { 1066 brcmf_dbg(USB, "Enter\n"); 1067 1068 devinfo->bus_pub.nrxq = nrxq; 1069 devinfo->rx_low_watermark = nrxq / 2; 1070 devinfo->bus_pub.devinfo = devinfo; 1071 devinfo->bus_pub.ntxq = ntxq; 1072 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1073 1074 /* flow control when too many tx urbs posted */ 1075 devinfo->tx_low_watermark = ntxq / 4; 1076 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1077 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1078 1079 /* Initialize other structure content */ 1080 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1081 1082 /* Initialize the spinlocks */ 1083 spin_lock_init(&devinfo->qlock); 1084 spin_lock_init(&devinfo->tx_flowblock_lock); 1085 1086 INIT_LIST_HEAD(&devinfo->rx_freeq); 1087 INIT_LIST_HEAD(&devinfo->rx_postq); 1088 1089 INIT_LIST_HEAD(&devinfo->tx_freeq); 1090 INIT_LIST_HEAD(&devinfo->tx_postq); 1091 1092 devinfo->tx_flowblock = false; 1093 1094 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1095 if (!devinfo->rx_reqs) 1096 goto error; 1097 1098 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1099 if (!devinfo->tx_reqs) 1100 goto error; 1101 devinfo->tx_freecount = ntxq; 1102 1103 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1104 if (!devinfo->ctl_urb) 1105 goto error; 1106 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1107 if (!devinfo->bulk_urb) 1108 goto error; 1109 1110 return &devinfo->bus_pub; 1111 1112 error: 1113 brcmf_err("failed!\n"); 1114 brcmf_usb_detach(devinfo); 1115 return NULL; 1116 } 1117 1118 static void brcmf_usb_wowl_config(struct device *dev, bool enabled) 1119 { 1120 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 1121 1122 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); 1123 devinfo->wowl_enabled = enabled; 1124 if (enabled) 1125 device_set_wakeup_enable(devinfo->dev, true); 1126 else 1127 device_set_wakeup_enable(devinfo->dev, false); 1128 } 1129 1130 static 1131 int brcmf_usb_get_fwname(struct device *dev, const char *ext, u8 *fw_name) 1132 { 1133 struct brcmf_bus *bus = dev_get_drvdata(dev); 1134 struct brcmf_fw_request *fwreq; 1135 struct brcmf_fw_name fwnames[] = { 1136 { ext, fw_name }, 1137 }; 1138 1139 fwreq = brcmf_fw_alloc_request(bus->chip, bus->chiprev, 1140 brcmf_usb_fwnames, 1141 ARRAY_SIZE(brcmf_usb_fwnames), 1142 fwnames, ARRAY_SIZE(fwnames)); 1143 if (!fwreq) 1144 return -ENOMEM; 1145 1146 kfree(fwreq); 1147 return 0; 1148 } 1149 1150 static const struct brcmf_bus_ops brcmf_usb_bus_ops = { 1151 .preinit = brcmf_usb_up, 1152 .stop = brcmf_usb_down, 1153 .txdata = brcmf_usb_tx, 1154 .txctl = brcmf_usb_tx_ctlpkt, 1155 .rxctl = brcmf_usb_rx_ctlpkt, 1156 .wowl_config = brcmf_usb_wowl_config, 1157 .get_fwname = brcmf_usb_get_fwname, 1158 }; 1159 1160 #define BRCMF_USB_FW_CODE 0 1161 1162 static void brcmf_usb_probe_phase2(struct device *dev, int ret, 1163 struct brcmf_fw_request *fwreq) 1164 { 1165 struct brcmf_bus *bus = dev_get_drvdata(dev); 1166 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo; 1167 const struct firmware *fw; 1168 1169 if (ret) 1170 goto error; 1171 1172 brcmf_dbg(USB, "Start fw downloading\n"); 1173 1174 fw = fwreq->items[BRCMF_USB_FW_CODE].binary; 1175 kfree(fwreq); 1176 1177 ret = check_file(fw->data); 1178 if (ret < 0) { 1179 brcmf_err("invalid firmware\n"); 1180 release_firmware(fw); 1181 goto error; 1182 } 1183 1184 devinfo->image = fw->data; 1185 devinfo->image_len = fw->size; 1186 1187 ret = brcmf_usb_fw_download(devinfo); 1188 release_firmware(fw); 1189 if (ret) 1190 goto error; 1191 1192 /* Attach to the common driver interface */ 1193 ret = brcmf_attach(devinfo->dev, devinfo->settings); 1194 if (ret) 1195 goto error; 1196 1197 complete(&devinfo->dev_init_done); 1198 return; 1199 error: 1200 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1201 complete(&devinfo->dev_init_done); 1202 device_release_driver(dev); 1203 } 1204 1205 static struct brcmf_fw_request * 1206 brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo) 1207 { 1208 struct brcmf_fw_request *fwreq; 1209 struct brcmf_fw_name fwnames[] = { 1210 { ".bin", devinfo->fw_name }, 1211 }; 1212 1213 fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid, 1214 devinfo->bus_pub.chiprev, 1215 brcmf_usb_fwnames, 1216 ARRAY_SIZE(brcmf_usb_fwnames), 1217 fwnames, ARRAY_SIZE(fwnames)); 1218 if (!fwreq) 1219 return NULL; 1220 1221 fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY; 1222 1223 return fwreq; 1224 } 1225 1226 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) 1227 { 1228 struct brcmf_bus *bus = NULL; 1229 struct brcmf_usbdev *bus_pub = NULL; 1230 struct device *dev = devinfo->dev; 1231 struct brcmf_fw_request *fwreq; 1232 int ret; 1233 1234 brcmf_dbg(USB, "Enter\n"); 1235 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1236 if (!bus_pub) 1237 return -ENODEV; 1238 1239 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1240 if (!bus) { 1241 ret = -ENOMEM; 1242 goto fail; 1243 } 1244 1245 bus->dev = dev; 1246 bus_pub->bus = bus; 1247 bus->bus_priv.usb = bus_pub; 1248 dev_set_drvdata(dev, bus); 1249 bus->ops = &brcmf_usb_bus_ops; 1250 bus->proto_type = BRCMF_PROTO_BCDC; 1251 bus->always_use_fws_queue = true; 1252 #ifdef CONFIG_PM 1253 bus->wowl_supported = true; 1254 #endif 1255 1256 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB, 1257 bus_pub->devid, 1258 bus_pub->chiprev); 1259 if (!devinfo->settings) { 1260 ret = -ENOMEM; 1261 goto fail; 1262 } 1263 1264 if (!brcmf_usb_dlneeded(devinfo)) { 1265 ret = brcmf_attach(devinfo->dev, devinfo->settings); 1266 if (ret) 1267 goto fail; 1268 /* we are done */ 1269 complete(&devinfo->dev_init_done); 1270 return 0; 1271 } 1272 bus->chip = bus_pub->devid; 1273 bus->chiprev = bus_pub->chiprev; 1274 1275 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1276 if (!fwreq) { 1277 ret = -ENOMEM; 1278 goto fail; 1279 } 1280 1281 /* request firmware here */ 1282 ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2); 1283 if (ret) { 1284 brcmf_err("firmware request failed: %d\n", ret); 1285 kfree(fwreq); 1286 goto fail; 1287 } 1288 1289 return 0; 1290 1291 fail: 1292 /* Release resources in reverse order */ 1293 kfree(bus); 1294 brcmf_usb_detach(devinfo); 1295 return ret; 1296 } 1297 1298 static void 1299 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1300 { 1301 if (!devinfo) 1302 return; 1303 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1304 1305 brcmf_detach(devinfo->dev); 1306 kfree(devinfo->bus_pub.bus); 1307 brcmf_usb_detach(devinfo); 1308 } 1309 1310 static int 1311 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1312 { 1313 struct usb_device *usb = interface_to_usbdev(intf); 1314 struct brcmf_usbdev_info *devinfo; 1315 struct usb_interface_descriptor *desc; 1316 struct usb_endpoint_descriptor *endpoint; 1317 int ret = 0; 1318 u32 num_of_eps; 1319 u8 endpoint_num, ep; 1320 1321 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1322 1323 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1324 if (devinfo == NULL) 1325 return -ENOMEM; 1326 1327 devinfo->usbdev = usb; 1328 devinfo->dev = &usb->dev; 1329 /* Init completion, to protect for disconnect while still loading. 1330 * Necessary because of the asynchronous firmware load construction 1331 */ 1332 init_completion(&devinfo->dev_init_done); 1333 1334 usb_set_intfdata(intf, devinfo); 1335 1336 /* Check that the device supports only one configuration */ 1337 if (usb->descriptor.bNumConfigurations != 1) { 1338 brcmf_err("Number of configurations: %d not supported\n", 1339 usb->descriptor.bNumConfigurations); 1340 ret = -ENODEV; 1341 goto fail; 1342 } 1343 1344 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1345 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1346 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1347 brcmf_err("Device class: 0x%x not supported\n", 1348 usb->descriptor.bDeviceClass); 1349 ret = -ENODEV; 1350 goto fail; 1351 } 1352 1353 desc = &intf->altsetting[0].desc; 1354 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1355 (desc->bInterfaceSubClass != 2) || 1356 (desc->bInterfaceProtocol != 0xff)) { 1357 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1358 desc->bInterfaceNumber, desc->bInterfaceClass, 1359 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1360 ret = -ENODEV; 1361 goto fail; 1362 } 1363 1364 num_of_eps = desc->bNumEndpoints; 1365 for (ep = 0; ep < num_of_eps; ep++) { 1366 endpoint = &intf->altsetting[0].endpoint[ep].desc; 1367 endpoint_num = usb_endpoint_num(endpoint); 1368 if (!usb_endpoint_xfer_bulk(endpoint)) 1369 continue; 1370 if (usb_endpoint_dir_in(endpoint)) { 1371 if (!devinfo->rx_pipe) 1372 devinfo->rx_pipe = 1373 usb_rcvbulkpipe(usb, endpoint_num); 1374 } else { 1375 if (!devinfo->tx_pipe) 1376 devinfo->tx_pipe = 1377 usb_sndbulkpipe(usb, endpoint_num); 1378 } 1379 } 1380 if (devinfo->rx_pipe == 0) { 1381 brcmf_err("No RX (in) Bulk EP found\n"); 1382 ret = -ENODEV; 1383 goto fail; 1384 } 1385 if (devinfo->tx_pipe == 0) { 1386 brcmf_err("No TX (out) Bulk EP found\n"); 1387 ret = -ENODEV; 1388 goto fail; 1389 } 1390 1391 devinfo->ifnum = desc->bInterfaceNumber; 1392 1393 if (usb->speed == USB_SPEED_SUPER_PLUS) 1394 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n"); 1395 else if (usb->speed == USB_SPEED_SUPER) 1396 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1397 else if (usb->speed == USB_SPEED_HIGH) 1398 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1399 else 1400 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1401 1402 ret = brcmf_usb_probe_cb(devinfo); 1403 if (ret) 1404 goto fail; 1405 1406 /* Success */ 1407 return 0; 1408 1409 fail: 1410 complete(&devinfo->dev_init_done); 1411 kfree(devinfo); 1412 usb_set_intfdata(intf, NULL); 1413 return ret; 1414 } 1415 1416 static void 1417 brcmf_usb_disconnect(struct usb_interface *intf) 1418 { 1419 struct brcmf_usbdev_info *devinfo; 1420 1421 brcmf_dbg(USB, "Enter\n"); 1422 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1423 1424 if (devinfo) { 1425 wait_for_completion(&devinfo->dev_init_done); 1426 /* Make sure that devinfo still exists. Firmware probe routines 1427 * may have released the device and cleared the intfdata. 1428 */ 1429 if (!usb_get_intfdata(intf)) 1430 goto done; 1431 1432 brcmf_usb_disconnect_cb(devinfo); 1433 kfree(devinfo); 1434 } 1435 done: 1436 brcmf_dbg(USB, "Exit\n"); 1437 } 1438 1439 /* 1440 * only need to signal the bus being down and update the state. 1441 */ 1442 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1443 { 1444 struct usb_device *usb = interface_to_usbdev(intf); 1445 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1446 1447 brcmf_dbg(USB, "Enter\n"); 1448 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1449 if (devinfo->wowl_enabled) 1450 brcmf_cancel_all_urbs(devinfo); 1451 else 1452 brcmf_detach(&usb->dev); 1453 return 0; 1454 } 1455 1456 /* 1457 * (re-) start the bus. 1458 */ 1459 static int brcmf_usb_resume(struct usb_interface *intf) 1460 { 1461 struct usb_device *usb = interface_to_usbdev(intf); 1462 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1463 1464 brcmf_dbg(USB, "Enter\n"); 1465 if (!devinfo->wowl_enabled) 1466 return brcmf_attach(devinfo->dev, devinfo->settings); 1467 1468 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1469 brcmf_usb_rx_fill_all(devinfo); 1470 return 0; 1471 } 1472 1473 static int brcmf_usb_reset_resume(struct usb_interface *intf) 1474 { 1475 struct usb_device *usb = interface_to_usbdev(intf); 1476 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1477 struct brcmf_fw_request *fwreq; 1478 int ret; 1479 1480 brcmf_dbg(USB, "Enter\n"); 1481 1482 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1483 if (!fwreq) 1484 return -ENOMEM; 1485 1486 ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2); 1487 if (ret < 0) 1488 kfree(fwreq); 1489 1490 return ret; 1491 } 1492 1493 #define BRCMF_USB_DEVICE(dev_id) \ 1494 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } 1495 1496 #define LINKSYS_USB_DEVICE(dev_id) \ 1497 { USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id) } 1498 1499 #define CYPRESS_USB_DEVICE(dev_id) \ 1500 { USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id) } 1501 1502 static const struct usb_device_id brcmf_usb_devid_table[] = { 1503 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1504 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1505 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1506 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1507 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID), 1508 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID), 1509 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, 1510 /* special entry for device with firmware loaded and running */ 1511 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1512 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1513 { /* end: all zeroes */ } 1514 }; 1515 1516 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1517 1518 static struct usb_driver brcmf_usbdrvr = { 1519 .name = KBUILD_MODNAME, 1520 .probe = brcmf_usb_probe, 1521 .disconnect = brcmf_usb_disconnect, 1522 .id_table = brcmf_usb_devid_table, 1523 .suspend = brcmf_usb_suspend, 1524 .resume = brcmf_usb_resume, 1525 .reset_resume = brcmf_usb_reset_resume, 1526 .disable_hub_initiated_lpm = 1, 1527 }; 1528 1529 static int brcmf_usb_reset_device(struct device *dev, void *notused) 1530 { 1531 /* device past is the usb interface so we 1532 * need to use parent here. 1533 */ 1534 brcmf_dev_reset(dev->parent); 1535 return 0; 1536 } 1537 1538 void brcmf_usb_exit(void) 1539 { 1540 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; 1541 int ret; 1542 1543 brcmf_dbg(USB, "Enter\n"); 1544 ret = driver_for_each_device(drv, NULL, NULL, 1545 brcmf_usb_reset_device); 1546 usb_deregister(&brcmf_usbdrvr); 1547 } 1548 1549 void brcmf_usb_register(void) 1550 { 1551 int ret; 1552 1553 brcmf_dbg(USB, "Enter\n"); 1554 ret = usb_register(&brcmf_usbdrvr); 1555 if (ret) 1556 brcmf_err("usb_register failed %d\n", ret); 1557 } 1558