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 mutex dev_init_lock; 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, bool pending) 449 { 450 struct brcmf_usbreq *req, *next; 451 int i = 0; 452 list_for_each_entry_safe(req, next, q, list) { 453 if (!req->urb) { 454 brcmf_err("bad req\n"); 455 break; 456 } 457 i++; 458 if (pending) { 459 usb_kill_urb(req->urb); 460 } else { 461 usb_free_urb(req->urb); 462 list_del_init(&req->list); 463 } 464 } 465 } 466 467 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 468 struct brcmf_usbreq *req) 469 { 470 unsigned long flags; 471 472 spin_lock_irqsave(&devinfo->qlock, flags); 473 list_del_init(&req->list); 474 spin_unlock_irqrestore(&devinfo->qlock, flags); 475 } 476 477 478 static void brcmf_usb_tx_complete(struct urb *urb) 479 { 480 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 481 struct brcmf_usbdev_info *devinfo = req->devinfo; 482 unsigned long flags; 483 484 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 485 req->skb); 486 brcmf_usb_del_fromq(devinfo, req); 487 488 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0); 489 req->skb = NULL; 490 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 491 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 492 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 493 devinfo->tx_flowblock) { 494 brcmf_proto_bcdc_txflowblock(devinfo->dev, false); 495 devinfo->tx_flowblock = false; 496 } 497 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 498 } 499 500 static void brcmf_usb_rx_complete(struct urb *urb) 501 { 502 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 503 struct brcmf_usbdev_info *devinfo = req->devinfo; 504 struct sk_buff *skb; 505 506 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 507 brcmf_usb_del_fromq(devinfo, req); 508 skb = req->skb; 509 req->skb = NULL; 510 511 /* zero lenght packets indicate usb "failure". Do not refill */ 512 if (urb->status != 0 || !urb->actual_length) { 513 brcmu_pkt_buf_free_skb(skb); 514 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 515 return; 516 } 517 518 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { 519 skb_put(skb, urb->actual_length); 520 brcmf_rx_frame(devinfo->dev, skb, true); 521 brcmf_usb_rx_refill(devinfo, req); 522 } else { 523 brcmu_pkt_buf_free_skb(skb); 524 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 525 } 526 return; 527 528 } 529 530 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 531 struct brcmf_usbreq *req) 532 { 533 struct sk_buff *skb; 534 int ret; 535 536 if (!req || !devinfo) 537 return; 538 539 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 540 if (!skb) { 541 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 542 return; 543 } 544 req->skb = skb; 545 546 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 547 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 548 req); 549 req->devinfo = devinfo; 550 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 551 552 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 553 if (ret) { 554 brcmf_usb_del_fromq(devinfo, req); 555 brcmu_pkt_buf_free_skb(req->skb); 556 req->skb = NULL; 557 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 558 } 559 return; 560 } 561 562 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 563 { 564 struct brcmf_usbreq *req; 565 566 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 567 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 568 return; 569 } 570 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 571 brcmf_usb_rx_refill(devinfo, req); 572 } 573 574 static void 575 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 576 { 577 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 578 int old_state; 579 580 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 581 devinfo->bus_pub.state, state); 582 583 if (devinfo->bus_pub.state == state) 584 return; 585 586 old_state = devinfo->bus_pub.state; 587 devinfo->bus_pub.state = state; 588 589 /* update state of upper layer */ 590 if (state == BRCMFMAC_USB_STATE_DOWN) { 591 brcmf_dbg(USB, "DBUS is down\n"); 592 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 593 } else if (state == BRCMFMAC_USB_STATE_UP) { 594 brcmf_dbg(USB, "DBUS is up\n"); 595 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 596 } else { 597 brcmf_dbg(USB, "DBUS current state=%d\n", state); 598 } 599 } 600 601 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 602 { 603 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 604 struct brcmf_usbreq *req; 605 int ret; 606 unsigned long flags; 607 608 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 609 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 610 ret = -EIO; 611 goto fail; 612 } 613 614 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 615 &devinfo->tx_freecount); 616 if (!req) { 617 brcmf_err("no req to send\n"); 618 ret = -ENOMEM; 619 goto fail; 620 } 621 622 req->skb = skb; 623 req->devinfo = devinfo; 624 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 625 skb->data, skb->len, brcmf_usb_tx_complete, req); 626 req->urb->transfer_flags |= URB_ZERO_PACKET; 627 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 628 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 629 if (ret) { 630 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 631 brcmf_usb_del_fromq(devinfo, req); 632 req->skb = NULL; 633 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 634 &devinfo->tx_freecount); 635 goto fail; 636 } 637 638 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 639 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 640 !devinfo->tx_flowblock) { 641 brcmf_proto_bcdc_txflowblock(dev, true); 642 devinfo->tx_flowblock = true; 643 } 644 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 645 return 0; 646 647 fail: 648 return ret; 649 } 650 651 652 static int brcmf_usb_up(struct device *dev) 653 { 654 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 655 656 brcmf_dbg(USB, "Enter\n"); 657 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 658 return 0; 659 660 /* Success, indicate devinfo is fully up */ 661 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 662 663 if (devinfo->ctl_urb) { 664 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 665 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 666 667 /* CTL Write */ 668 devinfo->ctl_write.bRequestType = 669 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 670 devinfo->ctl_write.bRequest = 0; 671 devinfo->ctl_write.wValue = cpu_to_le16(0); 672 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 673 674 /* CTL Read */ 675 devinfo->ctl_read.bRequestType = 676 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 677 devinfo->ctl_read.bRequest = 1; 678 devinfo->ctl_read.wValue = cpu_to_le16(0); 679 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 680 } 681 brcmf_usb_rx_fill_all(devinfo); 682 return 0; 683 } 684 685 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 686 { 687 if (devinfo->ctl_urb) 688 usb_kill_urb(devinfo->ctl_urb); 689 if (devinfo->bulk_urb) 690 usb_kill_urb(devinfo->bulk_urb); 691 brcmf_usb_free_q(&devinfo->tx_postq, true); 692 brcmf_usb_free_q(&devinfo->rx_postq, true); 693 } 694 695 static void brcmf_usb_down(struct device *dev) 696 { 697 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 698 699 brcmf_dbg(USB, "Enter\n"); 700 if (devinfo == NULL) 701 return; 702 703 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 704 return; 705 706 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 707 708 brcmf_cancel_all_urbs(devinfo); 709 } 710 711 static void 712 brcmf_usb_sync_complete(struct urb *urb) 713 { 714 struct brcmf_usbdev_info *devinfo = 715 (struct brcmf_usbdev_info *)urb->context; 716 717 devinfo->ctl_completed = true; 718 brcmf_usb_ioctl_resp_wake(devinfo); 719 } 720 721 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 722 void *buffer, int buflen) 723 { 724 int ret; 725 char *tmpbuf; 726 u16 size; 727 728 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 729 return -EINVAL; 730 731 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 732 if (!tmpbuf) 733 return -ENOMEM; 734 735 size = buflen; 736 devinfo->ctl_urb->transfer_buffer_length = size; 737 738 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 739 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 740 USB_RECIP_INTERFACE; 741 devinfo->ctl_read.bRequest = cmd; 742 743 usb_fill_control_urb(devinfo->ctl_urb, 744 devinfo->usbdev, 745 usb_rcvctrlpipe(devinfo->usbdev, 0), 746 (unsigned char *) &devinfo->ctl_read, 747 (void *) tmpbuf, size, 748 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 749 750 devinfo->ctl_completed = false; 751 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 752 if (ret < 0) { 753 brcmf_err("usb_submit_urb failed %d\n", ret); 754 goto finalize; 755 } 756 757 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 758 usb_kill_urb(devinfo->ctl_urb); 759 ret = -ETIMEDOUT; 760 } else { 761 memcpy(buffer, tmpbuf, buflen); 762 } 763 764 finalize: 765 kfree(tmpbuf); 766 return ret; 767 } 768 769 static bool 770 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 771 { 772 struct bootrom_id_le id; 773 u32 chipid, chiprev; 774 775 brcmf_dbg(USB, "Enter\n"); 776 777 if (devinfo == NULL) 778 return false; 779 780 /* Check if firmware downloaded already by querying runtime ID */ 781 id.chip = cpu_to_le32(0xDEAD); 782 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 783 784 chipid = le32_to_cpu(id.chip); 785 chiprev = le32_to_cpu(id.chiprev); 786 787 if ((chipid & 0x4300) == 0x4300) 788 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 789 else 790 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 791 if (chipid == BRCMF_POSTBOOT_ID) { 792 brcmf_dbg(USB, "firmware already downloaded\n"); 793 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 794 return false; 795 } else { 796 devinfo->bus_pub.devid = chipid; 797 devinfo->bus_pub.chiprev = chiprev; 798 } 799 return true; 800 } 801 802 static int 803 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 804 { 805 struct bootrom_id_le id; 806 u32 loop_cnt; 807 int err; 808 809 brcmf_dbg(USB, "Enter\n"); 810 811 loop_cnt = 0; 812 do { 813 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 814 loop_cnt++; 815 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 816 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 817 if ((err) && (err != -ETIMEDOUT)) 818 return err; 819 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 820 break; 821 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 822 823 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 824 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 825 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 826 827 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 828 return 0; 829 } else { 830 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 831 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 832 return -EINVAL; 833 } 834 } 835 836 837 static int 838 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 839 { 840 int ret; 841 842 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 843 return -EINVAL; 844 845 /* Prepare the URB */ 846 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 847 devinfo->tx_pipe, buffer, len, 848 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 849 850 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 851 852 devinfo->ctl_completed = false; 853 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 854 if (ret) { 855 brcmf_err("usb_submit_urb failed %d\n", ret); 856 return ret; 857 } 858 ret = brcmf_usb_ioctl_resp_wait(devinfo); 859 return (ret == 0); 860 } 861 862 static int 863 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 864 { 865 unsigned int sendlen, sent, dllen; 866 char *bulkchunk = NULL, *dlpos; 867 struct rdl_state_le state; 868 u32 rdlstate, rdlbytes; 869 int err = 0; 870 871 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 872 873 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 874 if (bulkchunk == NULL) { 875 err = -ENOMEM; 876 goto fail; 877 } 878 879 /* 1) Prepare USB boot loader for runtime image */ 880 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 881 882 rdlstate = le32_to_cpu(state.state); 883 rdlbytes = le32_to_cpu(state.bytes); 884 885 /* 2) Check we are in the Waiting state */ 886 if (rdlstate != DL_WAITING) { 887 brcmf_err("Failed to DL_START\n"); 888 err = -EINVAL; 889 goto fail; 890 } 891 sent = 0; 892 dlpos = fw; 893 dllen = fwlen; 894 895 /* Get chip id and rev */ 896 while (rdlbytes != dllen) { 897 /* Wait until the usb device reports it received all 898 * the bytes we sent */ 899 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 900 if ((dllen-sent) < TRX_RDL_CHUNK) 901 sendlen = dllen-sent; 902 else 903 sendlen = TRX_RDL_CHUNK; 904 905 /* simply avoid having to send a ZLP by ensuring we 906 * never have an even 907 * multiple of 64 908 */ 909 if (!(sendlen % 64)) 910 sendlen -= 4; 911 912 /* send data */ 913 memcpy(bulkchunk, dlpos, sendlen); 914 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 915 sendlen)) { 916 brcmf_err("send_bulk failed\n"); 917 err = -EINVAL; 918 goto fail; 919 } 920 921 dlpos += sendlen; 922 sent += sendlen; 923 } 924 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 925 sizeof(state)); 926 if (err) { 927 brcmf_err("DL_GETSTATE Failed\n"); 928 goto fail; 929 } 930 931 rdlstate = le32_to_cpu(state.state); 932 rdlbytes = le32_to_cpu(state.bytes); 933 934 /* restart if an error is reported */ 935 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 936 brcmf_err("Bad Hdr or Bad CRC state %d\n", 937 rdlstate); 938 err = -EINVAL; 939 goto fail; 940 } 941 } 942 943 fail: 944 kfree(bulkchunk); 945 brcmf_dbg(USB, "Exit, err=%d\n", err); 946 return err; 947 } 948 949 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 950 { 951 int err; 952 953 brcmf_dbg(USB, "Enter\n"); 954 955 if (devinfo == NULL) 956 return -EINVAL; 957 958 if (devinfo->bus_pub.devid == 0xDEAD) 959 return -EINVAL; 960 961 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 962 if (err == 0) 963 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 964 else 965 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 966 brcmf_dbg(USB, "Exit, err=%d\n", err); 967 968 return err; 969 } 970 971 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 972 { 973 struct rdl_state_le state; 974 975 brcmf_dbg(USB, "Enter\n"); 976 if (!devinfo) 977 return -EINVAL; 978 979 if (devinfo->bus_pub.devid == 0xDEAD) 980 return -EINVAL; 981 982 /* Check we are runnable */ 983 state.state = 0; 984 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 985 986 /* Start the image */ 987 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 988 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 989 return -ENODEV; 990 if (brcmf_usb_resetcfg(devinfo)) 991 return -ENODEV; 992 /* The Dongle may go for re-enumeration. */ 993 } else { 994 brcmf_err("Dongle not runnable\n"); 995 return -EINVAL; 996 } 997 brcmf_dbg(USB, "Exit\n"); 998 return 0; 999 } 1000 1001 static int 1002 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1003 { 1004 int err; 1005 1006 brcmf_dbg(USB, "Enter\n"); 1007 if (devinfo == NULL) 1008 return -ENODEV; 1009 1010 if (!devinfo->image) { 1011 brcmf_err("No firmware!\n"); 1012 return -ENOENT; 1013 } 1014 1015 err = brcmf_usb_dlstart(devinfo, 1016 (u8 *)devinfo->image, devinfo->image_len); 1017 if (err == 0) 1018 err = brcmf_usb_dlrun(devinfo); 1019 return err; 1020 } 1021 1022 1023 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1024 { 1025 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1026 1027 /* free the URBS */ 1028 brcmf_usb_free_q(&devinfo->rx_freeq, false); 1029 brcmf_usb_free_q(&devinfo->tx_freeq, false); 1030 1031 usb_free_urb(devinfo->ctl_urb); 1032 usb_free_urb(devinfo->bulk_urb); 1033 1034 kfree(devinfo->tx_reqs); 1035 kfree(devinfo->rx_reqs); 1036 1037 if (devinfo->settings) 1038 brcmf_release_module_param(devinfo->settings); 1039 } 1040 1041 1042 static int check_file(const u8 *headers) 1043 { 1044 struct trx_header_le *trx; 1045 int actual_len = -1; 1046 1047 brcmf_dbg(USB, "Enter\n"); 1048 /* Extract trx header */ 1049 trx = (struct trx_header_le *) headers; 1050 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1051 return -1; 1052 1053 headers += sizeof(struct trx_header_le); 1054 1055 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1056 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1057 return actual_len + sizeof(struct trx_header_le); 1058 } 1059 return -1; 1060 } 1061 1062 1063 static 1064 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1065 int nrxq, int ntxq) 1066 { 1067 brcmf_dbg(USB, "Enter\n"); 1068 1069 devinfo->bus_pub.nrxq = nrxq; 1070 devinfo->rx_low_watermark = nrxq / 2; 1071 devinfo->bus_pub.devinfo = devinfo; 1072 devinfo->bus_pub.ntxq = ntxq; 1073 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1074 1075 /* flow control when too many tx urbs posted */ 1076 devinfo->tx_low_watermark = ntxq / 4; 1077 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1078 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1079 1080 /* Initialize other structure content */ 1081 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1082 1083 /* Initialize the spinlocks */ 1084 spin_lock_init(&devinfo->qlock); 1085 spin_lock_init(&devinfo->tx_flowblock_lock); 1086 1087 INIT_LIST_HEAD(&devinfo->rx_freeq); 1088 INIT_LIST_HEAD(&devinfo->rx_postq); 1089 1090 INIT_LIST_HEAD(&devinfo->tx_freeq); 1091 INIT_LIST_HEAD(&devinfo->tx_postq); 1092 1093 devinfo->tx_flowblock = false; 1094 1095 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1096 if (!devinfo->rx_reqs) 1097 goto error; 1098 1099 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1100 if (!devinfo->tx_reqs) 1101 goto error; 1102 devinfo->tx_freecount = ntxq; 1103 1104 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1105 if (!devinfo->ctl_urb) 1106 goto error; 1107 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1108 if (!devinfo->bulk_urb) 1109 goto error; 1110 1111 return &devinfo->bus_pub; 1112 1113 error: 1114 brcmf_err("failed!\n"); 1115 brcmf_usb_detach(devinfo); 1116 return NULL; 1117 } 1118 1119 static void brcmf_usb_wowl_config(struct device *dev, bool enabled) 1120 { 1121 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 1122 1123 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); 1124 devinfo->wowl_enabled = enabled; 1125 if (enabled) 1126 device_set_wakeup_enable(devinfo->dev, true); 1127 else 1128 device_set_wakeup_enable(devinfo->dev, false); 1129 } 1130 1131 static 1132 int brcmf_usb_get_fwname(struct device *dev, const char *ext, u8 *fw_name) 1133 { 1134 struct brcmf_bus *bus = dev_get_drvdata(dev); 1135 struct brcmf_fw_request *fwreq; 1136 struct brcmf_fw_name fwnames[] = { 1137 { ext, fw_name }, 1138 }; 1139 1140 fwreq = brcmf_fw_alloc_request(bus->chip, bus->chiprev, 1141 brcmf_usb_fwnames, 1142 ARRAY_SIZE(brcmf_usb_fwnames), 1143 fwnames, ARRAY_SIZE(fwnames)); 1144 if (!fwreq) 1145 return -ENOMEM; 1146 1147 kfree(fwreq); 1148 return 0; 1149 } 1150 1151 static const struct brcmf_bus_ops brcmf_usb_bus_ops = { 1152 .preinit = brcmf_usb_up, 1153 .stop = brcmf_usb_down, 1154 .txdata = brcmf_usb_tx, 1155 .txctl = brcmf_usb_tx_ctlpkt, 1156 .rxctl = brcmf_usb_rx_ctlpkt, 1157 .wowl_config = brcmf_usb_wowl_config, 1158 .get_fwname = brcmf_usb_get_fwname, 1159 }; 1160 1161 #define BRCMF_USB_FW_CODE 0 1162 1163 static void brcmf_usb_probe_phase2(struct device *dev, int ret, 1164 struct brcmf_fw_request *fwreq) 1165 { 1166 struct brcmf_bus *bus = dev_get_drvdata(dev); 1167 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo; 1168 const struct firmware *fw; 1169 1170 if (ret) 1171 goto error; 1172 1173 brcmf_dbg(USB, "Start fw downloading\n"); 1174 1175 fw = fwreq->items[BRCMF_USB_FW_CODE].binary; 1176 kfree(fwreq); 1177 1178 ret = check_file(fw->data); 1179 if (ret < 0) { 1180 brcmf_err("invalid firmware\n"); 1181 release_firmware(fw); 1182 goto error; 1183 } 1184 1185 devinfo->image = fw->data; 1186 devinfo->image_len = fw->size; 1187 1188 ret = brcmf_usb_fw_download(devinfo); 1189 release_firmware(fw); 1190 if (ret) 1191 goto error; 1192 1193 /* Attach to the common driver interface */ 1194 ret = brcmf_attach(devinfo->dev, devinfo->settings); 1195 if (ret) 1196 goto error; 1197 1198 mutex_unlock(&devinfo->dev_init_lock); 1199 return; 1200 error: 1201 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1202 mutex_unlock(&devinfo->dev_init_lock); 1203 device_release_driver(dev); 1204 } 1205 1206 static struct brcmf_fw_request * 1207 brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo) 1208 { 1209 struct brcmf_fw_request *fwreq; 1210 struct brcmf_fw_name fwnames[] = { 1211 { ".bin", devinfo->fw_name }, 1212 }; 1213 1214 fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid, 1215 devinfo->bus_pub.chiprev, 1216 brcmf_usb_fwnames, 1217 ARRAY_SIZE(brcmf_usb_fwnames), 1218 fwnames, ARRAY_SIZE(fwnames)); 1219 if (!fwreq) 1220 return NULL; 1221 1222 fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY; 1223 1224 return fwreq; 1225 } 1226 1227 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) 1228 { 1229 struct brcmf_bus *bus = NULL; 1230 struct brcmf_usbdev *bus_pub = NULL; 1231 struct device *dev = devinfo->dev; 1232 struct brcmf_fw_request *fwreq; 1233 int ret; 1234 1235 brcmf_dbg(USB, "Enter\n"); 1236 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1237 if (!bus_pub) 1238 return -ENODEV; 1239 1240 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1241 if (!bus) { 1242 ret = -ENOMEM; 1243 goto fail; 1244 } 1245 1246 bus->dev = dev; 1247 bus_pub->bus = bus; 1248 bus->bus_priv.usb = bus_pub; 1249 dev_set_drvdata(dev, bus); 1250 bus->ops = &brcmf_usb_bus_ops; 1251 bus->proto_type = BRCMF_PROTO_BCDC; 1252 bus->always_use_fws_queue = true; 1253 #ifdef CONFIG_PM 1254 bus->wowl_supported = true; 1255 #endif 1256 1257 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB, 1258 bus_pub->devid, 1259 bus_pub->chiprev); 1260 if (!devinfo->settings) { 1261 ret = -ENOMEM; 1262 goto fail; 1263 } 1264 1265 if (!brcmf_usb_dlneeded(devinfo)) { 1266 ret = brcmf_attach(devinfo->dev, devinfo->settings); 1267 if (ret) 1268 goto fail; 1269 /* we are done */ 1270 mutex_unlock(&devinfo->dev_init_lock); 1271 return 0; 1272 } 1273 bus->chip = bus_pub->devid; 1274 bus->chiprev = bus_pub->chiprev; 1275 1276 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1277 if (!fwreq) { 1278 ret = -ENOMEM; 1279 goto fail; 1280 } 1281 1282 /* request firmware here */ 1283 ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2); 1284 if (ret) { 1285 brcmf_err("firmware request failed: %d\n", ret); 1286 kfree(fwreq); 1287 goto fail; 1288 } 1289 1290 return 0; 1291 1292 fail: 1293 /* Release resources in reverse order */ 1294 kfree(bus); 1295 brcmf_usb_detach(devinfo); 1296 return ret; 1297 } 1298 1299 static void 1300 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1301 { 1302 if (!devinfo) 1303 return; 1304 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1305 1306 brcmf_detach(devinfo->dev); 1307 kfree(devinfo->bus_pub.bus); 1308 brcmf_usb_detach(devinfo); 1309 } 1310 1311 static int 1312 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1313 { 1314 struct usb_device *usb = interface_to_usbdev(intf); 1315 struct brcmf_usbdev_info *devinfo; 1316 struct usb_interface_descriptor *desc; 1317 struct usb_endpoint_descriptor *endpoint; 1318 int ret = 0; 1319 u32 num_of_eps; 1320 u8 endpoint_num, ep; 1321 1322 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1323 1324 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1325 if (devinfo == NULL) 1326 return -ENOMEM; 1327 1328 devinfo->usbdev = usb; 1329 devinfo->dev = &usb->dev; 1330 /* Take an init lock, to protect for disconnect while still loading. 1331 * Necessary because of the asynchronous firmware load construction 1332 */ 1333 mutex_init(&devinfo->dev_init_lock); 1334 mutex_lock(&devinfo->dev_init_lock); 1335 1336 usb_set_intfdata(intf, devinfo); 1337 1338 /* Check that the device supports only one configuration */ 1339 if (usb->descriptor.bNumConfigurations != 1) { 1340 brcmf_err("Number of configurations: %d not supported\n", 1341 usb->descriptor.bNumConfigurations); 1342 ret = -ENODEV; 1343 goto fail; 1344 } 1345 1346 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1347 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1348 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1349 brcmf_err("Device class: 0x%x not supported\n", 1350 usb->descriptor.bDeviceClass); 1351 ret = -ENODEV; 1352 goto fail; 1353 } 1354 1355 desc = &intf->altsetting[0].desc; 1356 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1357 (desc->bInterfaceSubClass != 2) || 1358 (desc->bInterfaceProtocol != 0xff)) { 1359 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1360 desc->bInterfaceNumber, desc->bInterfaceClass, 1361 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1362 ret = -ENODEV; 1363 goto fail; 1364 } 1365 1366 num_of_eps = desc->bNumEndpoints; 1367 for (ep = 0; ep < num_of_eps; ep++) { 1368 endpoint = &intf->altsetting[0].endpoint[ep].desc; 1369 endpoint_num = usb_endpoint_num(endpoint); 1370 if (!usb_endpoint_xfer_bulk(endpoint)) 1371 continue; 1372 if (usb_endpoint_dir_in(endpoint)) { 1373 if (!devinfo->rx_pipe) 1374 devinfo->rx_pipe = 1375 usb_rcvbulkpipe(usb, endpoint_num); 1376 } else { 1377 if (!devinfo->tx_pipe) 1378 devinfo->tx_pipe = 1379 usb_sndbulkpipe(usb, endpoint_num); 1380 } 1381 } 1382 if (devinfo->rx_pipe == 0) { 1383 brcmf_err("No RX (in) Bulk EP found\n"); 1384 ret = -ENODEV; 1385 goto fail; 1386 } 1387 if (devinfo->tx_pipe == 0) { 1388 brcmf_err("No TX (out) Bulk EP found\n"); 1389 ret = -ENODEV; 1390 goto fail; 1391 } 1392 1393 devinfo->ifnum = desc->bInterfaceNumber; 1394 1395 if (usb->speed == USB_SPEED_SUPER_PLUS) 1396 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n"); 1397 else if (usb->speed == USB_SPEED_SUPER) 1398 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1399 else if (usb->speed == USB_SPEED_HIGH) 1400 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1401 else 1402 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1403 1404 ret = brcmf_usb_probe_cb(devinfo); 1405 if (ret) 1406 goto fail; 1407 1408 /* Success */ 1409 return 0; 1410 1411 fail: 1412 mutex_unlock(&devinfo->dev_init_lock); 1413 kfree(devinfo); 1414 usb_set_intfdata(intf, NULL); 1415 return ret; 1416 } 1417 1418 static void 1419 brcmf_usb_disconnect(struct usb_interface *intf) 1420 { 1421 struct brcmf_usbdev_info *devinfo; 1422 1423 brcmf_dbg(USB, "Enter\n"); 1424 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1425 1426 if (devinfo) { 1427 mutex_lock(&devinfo->dev_init_lock); 1428 /* Make sure that devinfo still exists. Firmware probe routines 1429 * may have released the device and cleared the intfdata. 1430 */ 1431 if (!usb_get_intfdata(intf)) 1432 goto done; 1433 1434 brcmf_usb_disconnect_cb(devinfo); 1435 kfree(devinfo); 1436 } 1437 done: 1438 brcmf_dbg(USB, "Exit\n"); 1439 } 1440 1441 /* 1442 * only need to signal the bus being down and update the state. 1443 */ 1444 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1445 { 1446 struct usb_device *usb = interface_to_usbdev(intf); 1447 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1448 1449 brcmf_dbg(USB, "Enter\n"); 1450 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1451 if (devinfo->wowl_enabled) 1452 brcmf_cancel_all_urbs(devinfo); 1453 else 1454 brcmf_detach(&usb->dev); 1455 return 0; 1456 } 1457 1458 /* 1459 * (re-) start the bus. 1460 */ 1461 static int brcmf_usb_resume(struct usb_interface *intf) 1462 { 1463 struct usb_device *usb = interface_to_usbdev(intf); 1464 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1465 1466 brcmf_dbg(USB, "Enter\n"); 1467 if (!devinfo->wowl_enabled) 1468 return brcmf_attach(devinfo->dev, devinfo->settings); 1469 1470 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1471 brcmf_usb_rx_fill_all(devinfo); 1472 return 0; 1473 } 1474 1475 static int brcmf_usb_reset_resume(struct usb_interface *intf) 1476 { 1477 struct usb_device *usb = interface_to_usbdev(intf); 1478 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1479 struct brcmf_fw_request *fwreq; 1480 int ret; 1481 1482 brcmf_dbg(USB, "Enter\n"); 1483 1484 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1485 if (!fwreq) 1486 return -ENOMEM; 1487 1488 ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2); 1489 if (ret < 0) 1490 kfree(fwreq); 1491 1492 return ret; 1493 } 1494 1495 #define BRCMF_USB_DEVICE(dev_id) \ 1496 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } 1497 1498 #define LINKSYS_USB_DEVICE(dev_id) \ 1499 { USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id) } 1500 1501 #define CYPRESS_USB_DEVICE(dev_id) \ 1502 { USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id) } 1503 1504 static const struct usb_device_id brcmf_usb_devid_table[] = { 1505 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1506 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1507 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1508 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1509 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID), 1510 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID), 1511 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, 1512 /* special entry for device with firmware loaded and running */ 1513 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1514 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1515 { /* end: all zeroes */ } 1516 }; 1517 1518 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1519 1520 static struct usb_driver brcmf_usbdrvr = { 1521 .name = KBUILD_MODNAME, 1522 .probe = brcmf_usb_probe, 1523 .disconnect = brcmf_usb_disconnect, 1524 .id_table = brcmf_usb_devid_table, 1525 .suspend = brcmf_usb_suspend, 1526 .resume = brcmf_usb_resume, 1527 .reset_resume = brcmf_usb_reset_resume, 1528 .disable_hub_initiated_lpm = 1, 1529 }; 1530 1531 static int brcmf_usb_reset_device(struct device *dev, void *notused) 1532 { 1533 /* device past is the usb interface so we 1534 * need to use parent here. 1535 */ 1536 brcmf_dev_reset(dev->parent); 1537 return 0; 1538 } 1539 1540 void brcmf_usb_exit(void) 1541 { 1542 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; 1543 int ret; 1544 1545 brcmf_dbg(USB, "Enter\n"); 1546 ret = driver_for_each_device(drv, NULL, NULL, 1547 brcmf_usb_reset_device); 1548 usb_deregister(&brcmf_usbdrvr); 1549 } 1550 1551 void brcmf_usb_register(void) 1552 { 1553 brcmf_dbg(USB, "Enter\n"); 1554 usb_register(&brcmf_usbdrvr); 1555 } 1556