1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2011 Broadcom Corporation 4 */ 5 6 #include <linux/kernel.h> 7 #include <linux/module.h> 8 #include <linux/firmware.h> 9 #include <linux/usb.h> 10 #include <linux/vmalloc.h> 11 12 #include <brcmu_utils.h> 13 #include <brcm_hw_ids.h> 14 #include <brcmu_wifi.h> 15 #include "bus.h" 16 #include "debug.h" 17 #include "firmware.h" 18 #include "usb.h" 19 #include "core.h" 20 #include "common.h" 21 #include "bcdc.h" 22 23 24 #define IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000) 25 26 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */ 27 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10 28 29 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle 30 has boot up */ 31 #define BRCMF_USB_NRXQ 50 32 #define BRCMF_USB_NTXQ 50 33 34 #define BRCMF_USB_CBCTL_WRITE 0 35 #define BRCMF_USB_CBCTL_READ 1 36 #define BRCMF_USB_MAX_PKT_SIZE 1600 37 38 BRCMF_FW_DEF(43143, "brcmfmac43143"); 39 BRCMF_FW_DEF(43236B, "brcmfmac43236b"); 40 BRCMF_FW_DEF(43242A, "brcmfmac43242a"); 41 BRCMF_FW_DEF(43569, "brcmfmac43569"); 42 BRCMF_FW_DEF(4373, "brcmfmac4373"); 43 44 static const struct brcmf_firmware_mapping brcmf_usb_fwnames[] = { 45 BRCMF_FW_ENTRY(BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, 43143), 46 BRCMF_FW_ENTRY(BRCM_CC_43235_CHIP_ID, 0x00000008, 43236B), 47 BRCMF_FW_ENTRY(BRCM_CC_43236_CHIP_ID, 0x00000008, 43236B), 48 BRCMF_FW_ENTRY(BRCM_CC_43238_CHIP_ID, 0x00000008, 43236B), 49 BRCMF_FW_ENTRY(BRCM_CC_43242_CHIP_ID, 0xFFFFFFFF, 43242A), 50 BRCMF_FW_ENTRY(BRCM_CC_43566_CHIP_ID, 0xFFFFFFFF, 43569), 51 BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43569), 52 BRCMF_FW_ENTRY(CY_CC_4373_CHIP_ID, 0xFFFFFFFF, 4373) 53 }; 54 55 #define TRX_MAGIC 0x30524448 /* "HDR0" */ 56 #define TRX_MAX_OFFSET 3 /* Max number of file offsets */ 57 #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */ 58 #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */ 59 #define TRX_OFFSETS_DLFWLEN_IDX 0 60 61 /* Control messages: bRequest values */ 62 #define DL_GETSTATE 0 /* returns the rdl_state_t struct */ 63 #define DL_CHECK_CRC 1 /* currently unused */ 64 #define DL_GO 2 /* execute downloaded image */ 65 #define DL_START 3 /* initialize dl state */ 66 #define DL_REBOOT 4 /* reboot the device in 2 seconds */ 67 #define DL_GETVER 5 /* returns the bootrom_id_t struct */ 68 #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset 69 * event to occur in 2 seconds. It is the 70 * responsibility of the downloaded code to 71 * clear this event 72 */ 73 #define DL_EXEC 7 /* jump to a supplied address */ 74 #define DL_RESETCFG 8 /* To support single enum on dongle 75 * - Not used by bootloader 76 */ 77 #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup 78 * if resp unavailable 79 */ 80 81 /* states */ 82 #define DL_WAITING 0 /* waiting to rx first pkt */ 83 #define DL_READY 1 /* hdr was good, waiting for more of the 84 * compressed image 85 */ 86 #define DL_BAD_HDR 2 /* hdr was corrupted */ 87 #define DL_BAD_CRC 3 /* compressed image was corrupted */ 88 #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ 89 #define DL_START_FAIL 5 /* failed to initialize correctly */ 90 #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM 91 * value 92 */ 93 #define DL_IMAGE_TOOBIG 7 /* firmware image too big */ 94 95 96 struct trx_header_le { 97 __le32 magic; /* "HDR0" */ 98 __le32 len; /* Length of file including header */ 99 __le32 crc32; /* CRC from flag_version to end of file */ 100 __le32 flag_version; /* 0:15 flags, 16:31 version */ 101 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of 102 * header 103 */ 104 }; 105 106 struct rdl_state_le { 107 __le32 state; 108 __le32 bytes; 109 }; 110 111 struct bootrom_id_le { 112 __le32 chip; /* Chip id */ 113 __le32 chiprev; /* Chip rev */ 114 __le32 ramsize; /* Size of RAM */ 115 __le32 remapbase; /* Current remap base address */ 116 __le32 boardtype; /* Type of board */ 117 __le32 boardrev; /* Board revision */ 118 }; 119 120 struct brcmf_usbdev_info { 121 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ 122 spinlock_t qlock; 123 struct list_head rx_freeq; 124 struct list_head rx_postq; 125 struct list_head tx_freeq; 126 struct list_head tx_postq; 127 uint rx_pipe, tx_pipe; 128 129 int rx_low_watermark; 130 int tx_low_watermark; 131 int tx_high_watermark; 132 int tx_freecount; 133 bool tx_flowblock; 134 spinlock_t tx_flowblock_lock; 135 136 struct brcmf_usbreq *tx_reqs; 137 struct brcmf_usbreq *rx_reqs; 138 139 char fw_name[BRCMF_FW_NAME_LEN]; 140 const u8 *image; /* buffer for combine fw and nvram */ 141 int image_len; 142 143 struct usb_device *usbdev; 144 struct device *dev; 145 struct completion dev_init_done; 146 147 int ctl_in_pipe, ctl_out_pipe; 148 struct urb *ctl_urb; /* URB for control endpoint */ 149 struct usb_ctrlrequest ctl_write; 150 struct usb_ctrlrequest ctl_read; 151 u32 ctl_urb_actual_length; 152 int ctl_urb_status; 153 int ctl_completed; 154 wait_queue_head_t ioctl_resp_wait; 155 ulong ctl_op; 156 u8 ifnum; 157 158 struct urb *bulk_urb; /* used for FW download */ 159 160 struct brcmf_mp_device *settings; 161 }; 162 163 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 164 struct brcmf_usbreq *req); 165 166 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 167 { 168 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 169 return bus_if->bus_priv.usb; 170 } 171 172 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 173 { 174 return brcmf_usb_get_buspub(dev)->devinfo; 175 } 176 177 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 178 { 179 return wait_event_timeout(devinfo->ioctl_resp_wait, 180 devinfo->ctl_completed, IOCTL_RESP_TIMEOUT); 181 } 182 183 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 184 { 185 wake_up(&devinfo->ioctl_resp_wait); 186 } 187 188 static void 189 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 190 { 191 brcmf_dbg(USB, "Enter, status=%d\n", status); 192 193 if (unlikely(devinfo == NULL)) 194 return; 195 196 if (type == BRCMF_USB_CBCTL_READ) { 197 if (status == 0) 198 devinfo->bus_pub.stats.rx_ctlpkts++; 199 else 200 devinfo->bus_pub.stats.rx_ctlerrs++; 201 } else if (type == BRCMF_USB_CBCTL_WRITE) { 202 if (status == 0) 203 devinfo->bus_pub.stats.tx_ctlpkts++; 204 else 205 devinfo->bus_pub.stats.tx_ctlerrs++; 206 } 207 208 devinfo->ctl_urb_status = status; 209 devinfo->ctl_completed = true; 210 brcmf_usb_ioctl_resp_wake(devinfo); 211 } 212 213 static void 214 brcmf_usb_ctlread_complete(struct urb *urb) 215 { 216 struct brcmf_usbdev_info *devinfo = 217 (struct brcmf_usbdev_info *)urb->context; 218 219 brcmf_dbg(USB, "Enter\n"); 220 devinfo->ctl_urb_actual_length = urb->actual_length; 221 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 222 urb->status); 223 } 224 225 static void 226 brcmf_usb_ctlwrite_complete(struct urb *urb) 227 { 228 struct brcmf_usbdev_info *devinfo = 229 (struct brcmf_usbdev_info *)urb->context; 230 231 brcmf_dbg(USB, "Enter\n"); 232 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 233 urb->status); 234 } 235 236 static int 237 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 238 { 239 int ret; 240 u16 size; 241 242 brcmf_dbg(USB, "Enter\n"); 243 if (devinfo == NULL || buf == NULL || 244 len == 0 || devinfo->ctl_urb == NULL) 245 return -EINVAL; 246 247 size = len; 248 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 249 devinfo->ctl_urb->transfer_buffer_length = size; 250 devinfo->ctl_urb_status = 0; 251 devinfo->ctl_urb_actual_length = 0; 252 253 usb_fill_control_urb(devinfo->ctl_urb, 254 devinfo->usbdev, 255 devinfo->ctl_out_pipe, 256 (unsigned char *) &devinfo->ctl_write, 257 buf, size, 258 (usb_complete_t)brcmf_usb_ctlwrite_complete, 259 devinfo); 260 261 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 262 if (ret < 0) 263 brcmf_err("usb_submit_urb failed %d\n", ret); 264 265 return ret; 266 } 267 268 static int 269 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 270 { 271 int ret; 272 u16 size; 273 274 brcmf_dbg(USB, "Enter\n"); 275 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 276 || (devinfo->ctl_urb == NULL)) 277 return -EINVAL; 278 279 size = len; 280 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 281 devinfo->ctl_urb->transfer_buffer_length = size; 282 283 devinfo->ctl_read.bRequestType = USB_DIR_IN 284 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 285 devinfo->ctl_read.bRequest = 1; 286 287 usb_fill_control_urb(devinfo->ctl_urb, 288 devinfo->usbdev, 289 devinfo->ctl_in_pipe, 290 (unsigned char *) &devinfo->ctl_read, 291 buf, size, 292 (usb_complete_t)brcmf_usb_ctlread_complete, 293 devinfo); 294 295 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 296 if (ret < 0) 297 brcmf_err("usb_submit_urb failed %d\n", ret); 298 299 return ret; 300 } 301 302 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 303 { 304 int err = 0; 305 int timeout = 0; 306 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 307 struct usb_interface *intf = to_usb_interface(dev); 308 309 brcmf_dbg(USB, "Enter\n"); 310 311 err = usb_autopm_get_interface(intf); 312 if (err) 313 goto out; 314 315 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 316 err = -EIO; 317 goto fail; 318 } 319 320 if (test_and_set_bit(0, &devinfo->ctl_op)) { 321 err = -EIO; 322 goto fail; 323 } 324 325 devinfo->ctl_completed = false; 326 err = brcmf_usb_send_ctl(devinfo, buf, len); 327 if (err) { 328 brcmf_err("fail %d bytes: %d\n", err, len); 329 clear_bit(0, &devinfo->ctl_op); 330 goto fail; 331 } 332 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 333 if (!timeout) { 334 brcmf_err("Txctl wait timed out\n"); 335 usb_kill_urb(devinfo->ctl_urb); 336 err = -EIO; 337 goto fail; 338 } 339 clear_bit(0, &devinfo->ctl_op); 340 341 fail: 342 usb_autopm_put_interface(intf); 343 out: 344 return err; 345 } 346 347 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 348 { 349 int err = 0; 350 int timeout = 0; 351 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 352 struct usb_interface *intf = to_usb_interface(dev); 353 354 brcmf_dbg(USB, "Enter\n"); 355 356 err = usb_autopm_get_interface(intf); 357 if (err) 358 goto out; 359 360 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 361 err = -EIO; 362 goto fail; 363 } 364 365 if (test_and_set_bit(0, &devinfo->ctl_op)) { 366 err = -EIO; 367 goto fail; 368 } 369 370 devinfo->ctl_completed = false; 371 err = brcmf_usb_recv_ctl(devinfo, buf, len); 372 if (err) { 373 brcmf_err("fail %d bytes: %d\n", err, len); 374 clear_bit(0, &devinfo->ctl_op); 375 goto fail; 376 } 377 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 378 err = devinfo->ctl_urb_status; 379 if (!timeout) { 380 brcmf_err("rxctl wait timed out\n"); 381 usb_kill_urb(devinfo->ctl_urb); 382 err = -EIO; 383 goto fail; 384 } 385 clear_bit(0, &devinfo->ctl_op); 386 fail: 387 usb_autopm_put_interface(intf); 388 if (!err) 389 return devinfo->ctl_urb_actual_length; 390 out: 391 return err; 392 } 393 394 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 395 struct list_head *q, int *counter) 396 { 397 unsigned long flags; 398 struct brcmf_usbreq *req; 399 spin_lock_irqsave(&devinfo->qlock, flags); 400 if (list_empty(q)) { 401 spin_unlock_irqrestore(&devinfo->qlock, flags); 402 return NULL; 403 } 404 req = list_entry(q->next, struct brcmf_usbreq, list); 405 list_del_init(q->next); 406 if (counter) 407 (*counter)--; 408 spin_unlock_irqrestore(&devinfo->qlock, flags); 409 return req; 410 411 } 412 413 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 414 struct list_head *q, struct brcmf_usbreq *req, 415 int *counter) 416 { 417 unsigned long flags; 418 spin_lock_irqsave(&devinfo->qlock, flags); 419 list_add_tail(&req->list, q); 420 if (counter) 421 (*counter)++; 422 spin_unlock_irqrestore(&devinfo->qlock, flags); 423 } 424 425 static struct brcmf_usbreq * 426 brcmf_usbdev_qinit(struct list_head *q, int qsize) 427 { 428 int i; 429 struct brcmf_usbreq *req, *reqs; 430 431 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 432 if (reqs == NULL) 433 return NULL; 434 435 req = reqs; 436 437 for (i = 0; i < qsize; i++) { 438 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 439 if (!req->urb) 440 goto fail; 441 442 INIT_LIST_HEAD(&req->list); 443 list_add_tail(&req->list, q); 444 req++; 445 } 446 return reqs; 447 fail: 448 brcmf_err("fail!\n"); 449 while (!list_empty(q)) { 450 req = list_entry(q->next, struct brcmf_usbreq, list); 451 if (req) 452 usb_free_urb(req->urb); 453 list_del(q->next); 454 } 455 kfree(reqs); 456 return NULL; 457 458 } 459 460 static void brcmf_usb_free_q(struct list_head *q) 461 { 462 struct brcmf_usbreq *req, *next; 463 464 list_for_each_entry_safe(req, next, q, list) { 465 if (!req->urb) { 466 brcmf_err("bad req\n"); 467 break; 468 } 469 usb_free_urb(req->urb); 470 list_del_init(&req->list); 471 } 472 } 473 474 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 475 struct brcmf_usbreq *req) 476 { 477 unsigned long flags; 478 479 spin_lock_irqsave(&devinfo->qlock, flags); 480 list_del_init(&req->list); 481 spin_unlock_irqrestore(&devinfo->qlock, flags); 482 } 483 484 485 static void brcmf_usb_tx_complete(struct urb *urb) 486 { 487 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 488 struct brcmf_usbdev_info *devinfo = req->devinfo; 489 unsigned long flags; 490 491 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 492 req->skb); 493 brcmf_usb_del_fromq(devinfo, req); 494 495 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0); 496 req->skb = NULL; 497 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 498 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 499 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 500 devinfo->tx_flowblock) { 501 brcmf_proto_bcdc_txflowblock(devinfo->dev, false); 502 devinfo->tx_flowblock = false; 503 } 504 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 505 } 506 507 static void brcmf_usb_rx_complete(struct urb *urb) 508 { 509 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 510 struct brcmf_usbdev_info *devinfo = req->devinfo; 511 struct sk_buff *skb; 512 513 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 514 brcmf_usb_del_fromq(devinfo, req); 515 skb = req->skb; 516 req->skb = NULL; 517 518 /* zero length packets indicate usb "failure". Do not refill */ 519 if (urb->status != 0 || !urb->actual_length) { 520 brcmu_pkt_buf_free_skb(skb); 521 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 522 return; 523 } 524 525 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP || 526 devinfo->bus_pub.state == BRCMFMAC_USB_STATE_SLEEP) { 527 skb_put(skb, urb->actual_length); 528 brcmf_rx_frame(devinfo->dev, skb, true, true); 529 brcmf_usb_rx_refill(devinfo, req); 530 usb_mark_last_busy(urb->dev); 531 } else { 532 brcmu_pkt_buf_free_skb(skb); 533 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 534 } 535 return; 536 537 } 538 539 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 540 struct brcmf_usbreq *req) 541 { 542 struct sk_buff *skb; 543 int ret; 544 545 if (!req || !devinfo) 546 return; 547 548 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 549 if (!skb) { 550 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 551 return; 552 } 553 req->skb = skb; 554 555 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 556 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 557 req); 558 req->devinfo = devinfo; 559 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 560 561 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 562 if (ret) { 563 brcmf_usb_del_fromq(devinfo, req); 564 brcmu_pkt_buf_free_skb(req->skb); 565 req->skb = NULL; 566 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 567 } 568 return; 569 } 570 571 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 572 { 573 struct brcmf_usbreq *req; 574 575 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 576 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 577 return; 578 } 579 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 580 brcmf_usb_rx_refill(devinfo, req); 581 } 582 583 static void 584 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 585 { 586 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 587 588 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 589 devinfo->bus_pub.state, state); 590 591 if (devinfo->bus_pub.state == state) 592 return; 593 594 devinfo->bus_pub.state = state; 595 596 /* update state of upper layer */ 597 if (state == BRCMFMAC_USB_STATE_DOWN) { 598 brcmf_dbg(USB, "DBUS is down\n"); 599 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 600 } else if (state == BRCMFMAC_USB_STATE_UP) { 601 brcmf_dbg(USB, "DBUS is up\n"); 602 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 603 } else { 604 brcmf_dbg(USB, "DBUS current state=%d\n", state); 605 } 606 } 607 608 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 609 { 610 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 611 struct brcmf_usbreq *req; 612 int ret; 613 unsigned long flags; 614 struct usb_interface *intf = to_usb_interface(dev); 615 616 ret = usb_autopm_get_interface(intf); 617 if (ret) 618 goto out; 619 620 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 621 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 622 ret = -EIO; 623 goto fail; 624 } 625 626 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 627 &devinfo->tx_freecount); 628 if (!req) { 629 brcmf_err("no req to send\n"); 630 ret = -ENOMEM; 631 goto fail; 632 } 633 634 req->skb = skb; 635 req->devinfo = devinfo; 636 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 637 skb->data, skb->len, brcmf_usb_tx_complete, req); 638 req->urb->transfer_flags |= URB_ZERO_PACKET; 639 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 640 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 641 if (ret) { 642 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 643 brcmf_usb_del_fromq(devinfo, req); 644 req->skb = NULL; 645 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 646 &devinfo->tx_freecount); 647 goto fail; 648 } 649 650 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 651 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 652 !devinfo->tx_flowblock) { 653 brcmf_proto_bcdc_txflowblock(dev, true); 654 devinfo->tx_flowblock = true; 655 } 656 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 657 658 fail: 659 usb_autopm_put_interface(intf); 660 out: 661 return ret; 662 } 663 664 665 static int brcmf_usb_up(struct device *dev) 666 { 667 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 668 669 brcmf_dbg(USB, "Enter\n"); 670 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 671 return 0; 672 673 /* Success, indicate devinfo is fully up */ 674 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 675 676 if (devinfo->ctl_urb) { 677 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 678 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 679 680 /* CTL Write */ 681 devinfo->ctl_write.bRequestType = 682 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 683 devinfo->ctl_write.bRequest = 0; 684 devinfo->ctl_write.wValue = cpu_to_le16(0); 685 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 686 687 /* CTL Read */ 688 devinfo->ctl_read.bRequestType = 689 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 690 devinfo->ctl_read.bRequest = 1; 691 devinfo->ctl_read.wValue = cpu_to_le16(0); 692 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 693 } 694 brcmf_usb_rx_fill_all(devinfo); 695 return 0; 696 } 697 698 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 699 { 700 int i; 701 702 if (devinfo->ctl_urb) 703 usb_kill_urb(devinfo->ctl_urb); 704 if (devinfo->bulk_urb) 705 usb_kill_urb(devinfo->bulk_urb); 706 if (devinfo->tx_reqs) 707 for (i = 0; i < devinfo->bus_pub.ntxq; i++) 708 usb_kill_urb(devinfo->tx_reqs[i].urb); 709 if (devinfo->rx_reqs) 710 for (i = 0; i < devinfo->bus_pub.nrxq; i++) 711 usb_kill_urb(devinfo->rx_reqs[i].urb); 712 } 713 714 static void brcmf_usb_down(struct device *dev) 715 { 716 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 717 718 brcmf_dbg(USB, "Enter\n"); 719 if (devinfo == NULL) 720 return; 721 722 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 723 return; 724 725 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 726 727 brcmf_cancel_all_urbs(devinfo); 728 } 729 730 static void 731 brcmf_usb_sync_complete(struct urb *urb) 732 { 733 struct brcmf_usbdev_info *devinfo = 734 (struct brcmf_usbdev_info *)urb->context; 735 736 devinfo->ctl_completed = true; 737 brcmf_usb_ioctl_resp_wake(devinfo); 738 } 739 740 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 741 void *buffer, int buflen) 742 { 743 int ret; 744 char *tmpbuf = NULL; 745 u16 size; 746 747 if (!devinfo || !devinfo->ctl_urb) { 748 ret = -EINVAL; 749 goto err; 750 } 751 752 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 753 if (!tmpbuf) { 754 ret = -ENOMEM; 755 goto err; 756 } 757 758 size = buflen; 759 devinfo->ctl_urb->transfer_buffer_length = size; 760 761 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 762 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 763 USB_RECIP_INTERFACE; 764 devinfo->ctl_read.bRequest = cmd; 765 766 usb_fill_control_urb(devinfo->ctl_urb, 767 devinfo->usbdev, 768 usb_rcvctrlpipe(devinfo->usbdev, 0), 769 (unsigned char *) &devinfo->ctl_read, 770 (void *) tmpbuf, size, 771 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 772 773 devinfo->ctl_completed = false; 774 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 775 if (ret < 0) { 776 brcmf_err("usb_submit_urb failed %d\n", ret); 777 goto err; 778 } 779 780 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 781 usb_kill_urb(devinfo->ctl_urb); 782 ret = -ETIMEDOUT; 783 goto err; 784 } else { 785 memcpy(buffer, tmpbuf, buflen); 786 } 787 788 kfree(tmpbuf); 789 return 0; 790 791 err: 792 kfree(tmpbuf); 793 brcmf_err("dl cmd %u failed: err=%d\n", cmd, ret); 794 return ret; 795 } 796 797 static bool 798 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 799 { 800 struct bootrom_id_le id; 801 u32 chipid, chiprev; 802 803 brcmf_dbg(USB, "Enter\n"); 804 805 if (devinfo == NULL) 806 return false; 807 808 /* Check if firmware downloaded already by querying runtime ID */ 809 id.chip = cpu_to_le32(0xDEAD); 810 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 811 812 chipid = le32_to_cpu(id.chip); 813 chiprev = le32_to_cpu(id.chiprev); 814 815 if ((chipid & 0x4300) == 0x4300) 816 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 817 else 818 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 819 if (chipid == BRCMF_POSTBOOT_ID) { 820 brcmf_dbg(USB, "firmware already downloaded\n"); 821 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 822 return false; 823 } else { 824 devinfo->bus_pub.devid = chipid; 825 devinfo->bus_pub.chiprev = chiprev; 826 } 827 return true; 828 } 829 830 static int 831 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 832 { 833 struct bootrom_id_le id; 834 u32 loop_cnt; 835 int err; 836 837 brcmf_dbg(USB, "Enter\n"); 838 839 loop_cnt = 0; 840 do { 841 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 842 loop_cnt++; 843 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 844 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 845 if ((err) && (err != -ETIMEDOUT)) 846 return err; 847 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 848 break; 849 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 850 851 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 852 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 853 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 854 855 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 856 return 0; 857 } else { 858 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 859 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 860 return -EINVAL; 861 } 862 } 863 864 865 static int 866 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 867 { 868 int ret; 869 870 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 871 return -EINVAL; 872 873 /* Prepare the URB */ 874 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 875 devinfo->tx_pipe, buffer, len, 876 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 877 878 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 879 880 devinfo->ctl_completed = false; 881 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 882 if (ret) { 883 brcmf_err("usb_submit_urb failed %d\n", ret); 884 return ret; 885 } 886 ret = brcmf_usb_ioctl_resp_wait(devinfo); 887 return (ret == 0); 888 } 889 890 static int 891 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 892 { 893 unsigned int sendlen, sent, dllen; 894 char *bulkchunk = NULL, *dlpos; 895 struct rdl_state_le state; 896 u32 rdlstate, rdlbytes; 897 int err = 0; 898 899 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 900 901 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 902 if (bulkchunk == NULL) { 903 err = -ENOMEM; 904 goto fail; 905 } 906 907 /* 1) Prepare USB boot loader for runtime image */ 908 err = brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 909 if (err) 910 goto fail; 911 912 rdlstate = le32_to_cpu(state.state); 913 rdlbytes = le32_to_cpu(state.bytes); 914 915 /* 2) Check we are in the Waiting state */ 916 if (rdlstate != DL_WAITING) { 917 brcmf_err("Invalid DL state: %u\n", rdlstate); 918 err = -EINVAL; 919 goto fail; 920 } 921 sent = 0; 922 dlpos = fw; 923 dllen = fwlen; 924 925 /* Get chip id and rev */ 926 while (rdlbytes != dllen) { 927 /* Wait until the usb device reports it received all 928 * the bytes we sent */ 929 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 930 if ((dllen-sent) < TRX_RDL_CHUNK) 931 sendlen = dllen-sent; 932 else 933 sendlen = TRX_RDL_CHUNK; 934 935 /* simply avoid having to send a ZLP by ensuring we 936 * never have an even 937 * multiple of 64 938 */ 939 if (!(sendlen % 64)) 940 sendlen -= 4; 941 942 /* send data */ 943 memcpy(bulkchunk, dlpos, sendlen); 944 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 945 sendlen)) { 946 brcmf_err("send_bulk failed\n"); 947 err = -EINVAL; 948 goto fail; 949 } 950 951 dlpos += sendlen; 952 sent += sendlen; 953 } 954 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 955 sizeof(state)); 956 if (err) { 957 brcmf_err("DL_GETSTATE Failed\n"); 958 goto fail; 959 } 960 961 rdlstate = le32_to_cpu(state.state); 962 rdlbytes = le32_to_cpu(state.bytes); 963 964 /* restart if an error is reported */ 965 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 966 brcmf_err("Bad Hdr or Bad CRC state %d\n", 967 rdlstate); 968 err = -EINVAL; 969 goto fail; 970 } 971 } 972 973 fail: 974 kfree(bulkchunk); 975 brcmf_dbg(USB, "Exit, err=%d\n", err); 976 return err; 977 } 978 979 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 980 { 981 int err; 982 983 brcmf_dbg(USB, "Enter\n"); 984 985 if (devinfo == NULL) 986 return -EINVAL; 987 988 if (devinfo->bus_pub.devid == 0xDEAD) 989 return -EINVAL; 990 991 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 992 if (err == 0) 993 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 994 else 995 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 996 brcmf_dbg(USB, "Exit, err=%d\n", err); 997 998 return err; 999 } 1000 1001 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 1002 { 1003 struct rdl_state_le state; 1004 1005 brcmf_dbg(USB, "Enter\n"); 1006 if (!devinfo) 1007 return -EINVAL; 1008 1009 if (devinfo->bus_pub.devid == 0xDEAD) 1010 return -EINVAL; 1011 1012 /* Check we are runnable */ 1013 state.state = 0; 1014 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 1015 1016 /* Start the image */ 1017 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 1018 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 1019 return -ENODEV; 1020 if (brcmf_usb_resetcfg(devinfo)) 1021 return -ENODEV; 1022 /* The Dongle may go for re-enumeration. */ 1023 } else { 1024 brcmf_err("Dongle not runnable\n"); 1025 return -EINVAL; 1026 } 1027 brcmf_dbg(USB, "Exit\n"); 1028 return 0; 1029 } 1030 1031 static int 1032 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1033 { 1034 int err; 1035 struct usb_interface *intf; 1036 1037 brcmf_dbg(USB, "Enter\n"); 1038 if (!devinfo) { 1039 err = -ENODEV; 1040 goto out; 1041 } 1042 1043 if (!devinfo->image) { 1044 brcmf_err("No firmware!\n"); 1045 err = -ENOENT; 1046 goto out; 1047 } 1048 1049 intf = to_usb_interface(devinfo->dev); 1050 err = usb_autopm_get_interface(intf); 1051 if (err) 1052 goto out; 1053 1054 err = brcmf_usb_dlstart(devinfo, 1055 (u8 *)devinfo->image, devinfo->image_len); 1056 if (err == 0) 1057 err = brcmf_usb_dlrun(devinfo); 1058 1059 usb_autopm_put_interface(intf); 1060 out: 1061 return err; 1062 } 1063 1064 1065 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1066 { 1067 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1068 1069 /* free the URBS */ 1070 brcmf_usb_free_q(&devinfo->rx_freeq); 1071 brcmf_usb_free_q(&devinfo->tx_freeq); 1072 1073 usb_free_urb(devinfo->ctl_urb); 1074 usb_free_urb(devinfo->bulk_urb); 1075 1076 kfree(devinfo->tx_reqs); 1077 kfree(devinfo->rx_reqs); 1078 1079 if (devinfo->settings) 1080 brcmf_release_module_param(devinfo->settings); 1081 } 1082 1083 1084 static int check_file(const u8 *headers) 1085 { 1086 struct trx_header_le *trx; 1087 int actual_len = -1; 1088 1089 brcmf_dbg(USB, "Enter\n"); 1090 /* Extract trx header */ 1091 trx = (struct trx_header_le *) headers; 1092 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1093 return -1; 1094 1095 headers += sizeof(struct trx_header_le); 1096 1097 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1098 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1099 return actual_len + sizeof(struct trx_header_le); 1100 } 1101 return -1; 1102 } 1103 1104 1105 static 1106 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1107 int nrxq, int ntxq) 1108 { 1109 brcmf_dbg(USB, "Enter\n"); 1110 1111 devinfo->bus_pub.nrxq = nrxq; 1112 devinfo->rx_low_watermark = nrxq / 2; 1113 devinfo->bus_pub.devinfo = devinfo; 1114 devinfo->bus_pub.ntxq = ntxq; 1115 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1116 1117 /* flow control when too many tx urbs posted */ 1118 devinfo->tx_low_watermark = ntxq / 4; 1119 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1120 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1121 1122 /* Initialize other structure content */ 1123 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1124 1125 /* Initialize the spinlocks */ 1126 spin_lock_init(&devinfo->qlock); 1127 spin_lock_init(&devinfo->tx_flowblock_lock); 1128 1129 INIT_LIST_HEAD(&devinfo->rx_freeq); 1130 INIT_LIST_HEAD(&devinfo->rx_postq); 1131 1132 INIT_LIST_HEAD(&devinfo->tx_freeq); 1133 INIT_LIST_HEAD(&devinfo->tx_postq); 1134 1135 devinfo->tx_flowblock = false; 1136 1137 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1138 if (!devinfo->rx_reqs) 1139 goto error; 1140 1141 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1142 if (!devinfo->tx_reqs) 1143 goto error; 1144 devinfo->tx_freecount = ntxq; 1145 1146 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1147 if (!devinfo->ctl_urb) 1148 goto error; 1149 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1150 if (!devinfo->bulk_urb) 1151 goto error; 1152 1153 return &devinfo->bus_pub; 1154 1155 error: 1156 brcmf_err("failed!\n"); 1157 brcmf_usb_detach(devinfo); 1158 return NULL; 1159 } 1160 1161 static int brcmf_usb_get_blob(struct device *dev, const struct firmware **fw, 1162 enum brcmf_blob_type type) 1163 { 1164 /* No blobs for USB devices... */ 1165 return -ENOENT; 1166 } 1167 1168 static const struct brcmf_bus_ops brcmf_usb_bus_ops = { 1169 .preinit = brcmf_usb_up, 1170 .stop = brcmf_usb_down, 1171 .txdata = brcmf_usb_tx, 1172 .txctl = brcmf_usb_tx_ctlpkt, 1173 .rxctl = brcmf_usb_rx_ctlpkt, 1174 .get_blob = brcmf_usb_get_blob, 1175 }; 1176 1177 #define BRCMF_USB_FW_CODE 0 1178 1179 static void brcmf_usb_probe_phase2(struct device *dev, int ret, 1180 struct brcmf_fw_request *fwreq) 1181 { 1182 struct brcmf_bus *bus = dev_get_drvdata(dev); 1183 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo; 1184 const struct firmware *fw; 1185 1186 if (ret) 1187 goto error; 1188 1189 brcmf_dbg(USB, "Start fw downloading\n"); 1190 1191 fw = fwreq->items[BRCMF_USB_FW_CODE].binary; 1192 kfree(fwreq); 1193 1194 ret = check_file(fw->data); 1195 if (ret < 0) { 1196 brcmf_err("invalid firmware\n"); 1197 release_firmware(fw); 1198 goto error; 1199 } 1200 1201 devinfo->image = fw->data; 1202 devinfo->image_len = fw->size; 1203 1204 ret = brcmf_usb_fw_download(devinfo); 1205 release_firmware(fw); 1206 if (ret) 1207 goto error; 1208 1209 ret = brcmf_alloc(devinfo->dev, devinfo->settings); 1210 if (ret) 1211 goto error; 1212 1213 /* Attach to the common driver interface */ 1214 ret = brcmf_attach(devinfo->dev); 1215 if (ret) 1216 goto error; 1217 1218 complete(&devinfo->dev_init_done); 1219 return; 1220 error: 1221 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1222 complete(&devinfo->dev_init_done); 1223 device_release_driver(dev); 1224 } 1225 1226 static struct brcmf_fw_request * 1227 brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo) 1228 { 1229 struct brcmf_fw_request *fwreq; 1230 struct brcmf_fw_name fwnames[] = { 1231 { ".bin", devinfo->fw_name }, 1232 }; 1233 1234 fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid, 1235 devinfo->bus_pub.chiprev, 1236 brcmf_usb_fwnames, 1237 ARRAY_SIZE(brcmf_usb_fwnames), 1238 fwnames, ARRAY_SIZE(fwnames)); 1239 if (!fwreq) 1240 return NULL; 1241 1242 fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY; 1243 1244 return fwreq; 1245 } 1246 1247 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo, 1248 enum brcmf_fwvendor fwvid) 1249 { 1250 struct brcmf_bus *bus; 1251 struct brcmf_usbdev *bus_pub; 1252 struct device *dev = devinfo->dev; 1253 struct brcmf_fw_request *fwreq; 1254 int ret; 1255 1256 brcmf_dbg(USB, "Enter\n"); 1257 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1258 if (!bus_pub) 1259 return -ENODEV; 1260 1261 bus = kzalloc(sizeof(*bus), GFP_ATOMIC); 1262 if (!bus) { 1263 ret = -ENOMEM; 1264 goto fail; 1265 } 1266 1267 bus->dev = dev; 1268 bus_pub->bus = bus; 1269 bus->bus_priv.usb = bus_pub; 1270 dev_set_drvdata(dev, bus); 1271 bus->ops = &brcmf_usb_bus_ops; 1272 bus->proto_type = BRCMF_PROTO_BCDC; 1273 bus->fwvid = fwvid; 1274 bus->always_use_fws_queue = true; 1275 #ifdef CONFIG_PM 1276 bus->wowl_supported = true; 1277 #endif 1278 1279 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB, 1280 bus_pub->devid, 1281 bus_pub->chiprev); 1282 if (!devinfo->settings) { 1283 ret = -ENOMEM; 1284 goto fail; 1285 } 1286 ret = PTR_ERR_OR_ZERO(devinfo->settings); 1287 if (ret < 0) 1288 goto fail; 1289 1290 if (!brcmf_usb_dlneeded(devinfo)) { 1291 ret = brcmf_alloc(devinfo->dev, devinfo->settings); 1292 if (ret) 1293 goto fail; 1294 ret = brcmf_attach(devinfo->dev); 1295 if (ret) 1296 goto fail; 1297 /* we are done */ 1298 complete(&devinfo->dev_init_done); 1299 return 0; 1300 } 1301 bus->chip = bus_pub->devid; 1302 bus->chiprev = bus_pub->chiprev; 1303 1304 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1305 if (!fwreq) { 1306 ret = -ENOMEM; 1307 goto fail; 1308 } 1309 1310 /* request firmware here */ 1311 ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2); 1312 if (ret) { 1313 brcmf_err("firmware request failed: %d\n", ret); 1314 kfree(fwreq); 1315 goto fail; 1316 } 1317 1318 return 0; 1319 1320 fail: 1321 /* Release resources in reverse order */ 1322 brcmf_free(devinfo->dev); 1323 kfree(bus); 1324 brcmf_usb_detach(devinfo); 1325 return ret; 1326 } 1327 1328 static void 1329 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1330 { 1331 if (!devinfo) 1332 return; 1333 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1334 1335 brcmf_detach(devinfo->dev); 1336 brcmf_free(devinfo->dev); 1337 kfree(devinfo->bus_pub.bus); 1338 brcmf_usb_detach(devinfo); 1339 } 1340 1341 /* Forward declaration for usb_match_id() call */ 1342 static const struct usb_device_id brcmf_usb_devid_table[]; 1343 1344 static int 1345 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1346 { 1347 struct usb_device *usb = interface_to_usbdev(intf); 1348 struct brcmf_usbdev_info *devinfo; 1349 struct usb_interface_descriptor *desc; 1350 struct usb_endpoint_descriptor *endpoint; 1351 int ret = 0; 1352 u32 num_of_eps; 1353 u8 endpoint_num, ep; 1354 1355 if (!id) { 1356 id = usb_match_id(intf, brcmf_usb_devid_table); 1357 if (!id) { 1358 dev_err(&intf->dev, "Error could not find matching usb_device_id\n"); 1359 return -ENODEV; 1360 } 1361 } 1362 1363 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1364 1365 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1366 if (devinfo == NULL) 1367 return -ENOMEM; 1368 1369 devinfo->usbdev = usb; 1370 devinfo->dev = &usb->dev; 1371 /* Init completion, to protect for disconnect while still loading. 1372 * Necessary because of the asynchronous firmware load construction 1373 */ 1374 init_completion(&devinfo->dev_init_done); 1375 1376 usb_set_intfdata(intf, devinfo); 1377 1378 intf->needs_remote_wakeup = 1; 1379 1380 /* Check that the device supports only one configuration */ 1381 if (usb->descriptor.bNumConfigurations != 1) { 1382 brcmf_err("Number of configurations: %d not supported\n", 1383 usb->descriptor.bNumConfigurations); 1384 ret = -ENODEV; 1385 goto fail; 1386 } 1387 1388 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1389 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1390 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1391 brcmf_err("Device class: 0x%x not supported\n", 1392 usb->descriptor.bDeviceClass); 1393 ret = -ENODEV; 1394 goto fail; 1395 } 1396 1397 desc = &intf->cur_altsetting->desc; 1398 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1399 (desc->bInterfaceSubClass != 2) || 1400 (desc->bInterfaceProtocol != 0xff)) { 1401 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1402 desc->bInterfaceNumber, desc->bInterfaceClass, 1403 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1404 ret = -ENODEV; 1405 goto fail; 1406 } 1407 1408 num_of_eps = desc->bNumEndpoints; 1409 for (ep = 0; ep < num_of_eps; ep++) { 1410 endpoint = &intf->cur_altsetting->endpoint[ep].desc; 1411 endpoint_num = usb_endpoint_num(endpoint); 1412 if (!usb_endpoint_xfer_bulk(endpoint)) 1413 continue; 1414 if (usb_endpoint_dir_in(endpoint)) { 1415 if (!devinfo->rx_pipe) 1416 devinfo->rx_pipe = 1417 usb_rcvbulkpipe(usb, endpoint_num); 1418 } else { 1419 if (!devinfo->tx_pipe) 1420 devinfo->tx_pipe = 1421 usb_sndbulkpipe(usb, endpoint_num); 1422 } 1423 } 1424 if (devinfo->rx_pipe == 0) { 1425 brcmf_err("No RX (in) Bulk EP found\n"); 1426 ret = -ENODEV; 1427 goto fail; 1428 } 1429 if (devinfo->tx_pipe == 0) { 1430 brcmf_err("No TX (out) Bulk EP found\n"); 1431 ret = -ENODEV; 1432 goto fail; 1433 } 1434 1435 devinfo->ifnum = desc->bInterfaceNumber; 1436 1437 if (usb->speed == USB_SPEED_SUPER_PLUS) 1438 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n"); 1439 else if (usb->speed == USB_SPEED_SUPER) 1440 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1441 else if (usb->speed == USB_SPEED_HIGH) 1442 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1443 else 1444 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1445 1446 ret = brcmf_usb_probe_cb(devinfo, id->driver_info); 1447 if (ret) 1448 goto fail; 1449 1450 /* Success */ 1451 return 0; 1452 1453 fail: 1454 complete(&devinfo->dev_init_done); 1455 kfree(devinfo); 1456 usb_set_intfdata(intf, NULL); 1457 return ret; 1458 } 1459 1460 static void 1461 brcmf_usb_disconnect(struct usb_interface *intf) 1462 { 1463 struct brcmf_usbdev_info *devinfo; 1464 1465 brcmf_dbg(USB, "Enter\n"); 1466 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1467 1468 if (devinfo) { 1469 wait_for_completion(&devinfo->dev_init_done); 1470 /* Make sure that devinfo still exists. Firmware probe routines 1471 * may have released the device and cleared the intfdata. 1472 */ 1473 if (!usb_get_intfdata(intf)) 1474 goto done; 1475 1476 brcmf_usb_disconnect_cb(devinfo); 1477 kfree(devinfo); 1478 } 1479 done: 1480 brcmf_dbg(USB, "Exit\n"); 1481 } 1482 1483 /* 1484 * only need to signal the bus being down and update the state. 1485 */ 1486 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1487 { 1488 struct usb_device *usb = interface_to_usbdev(intf); 1489 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1490 1491 brcmf_dbg(USB, "Enter\n"); 1492 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1493 brcmf_cancel_all_urbs(devinfo); 1494 device_set_wakeup_enable(devinfo->dev, true); 1495 return 0; 1496 } 1497 1498 /* 1499 * (re-) start the bus. 1500 */ 1501 static int brcmf_usb_resume(struct usb_interface *intf) 1502 { 1503 struct usb_device *usb = interface_to_usbdev(intf); 1504 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1505 1506 brcmf_dbg(USB, "Enter\n"); 1507 1508 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1509 brcmf_usb_rx_fill_all(devinfo); 1510 device_set_wakeup_enable(devinfo->dev, false); 1511 return 0; 1512 } 1513 1514 static int brcmf_usb_reset_resume(struct usb_interface *intf) 1515 { 1516 struct usb_device *usb = interface_to_usbdev(intf); 1517 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1518 struct brcmf_fw_request *fwreq; 1519 int ret; 1520 1521 brcmf_dbg(USB, "Enter\n"); 1522 1523 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1524 if (!fwreq) 1525 return -ENOMEM; 1526 1527 ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2); 1528 if (ret < 0) 1529 kfree(fwreq); 1530 1531 return ret; 1532 } 1533 1534 #define BRCMF_USB_DEVICE(dev_id) \ 1535 { \ 1536 USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id), \ 1537 .driver_info = BRCMF_FWVENDOR_WCC \ 1538 } 1539 1540 #define LINKSYS_USB_DEVICE(dev_id) \ 1541 { \ 1542 USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id), \ 1543 .driver_info = BRCMF_FWVENDOR_WCC \ 1544 } 1545 1546 #define CYPRESS_USB_DEVICE(dev_id) \ 1547 { \ 1548 USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id), \ 1549 .driver_info = BRCMF_FWVENDOR_WCC \ 1550 } 1551 1552 static const struct usb_device_id brcmf_usb_devid_table[] = { 1553 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1554 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1555 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1556 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1557 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID), 1558 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID), 1559 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, 1560 /* special entry for device with firmware loaded and running */ 1561 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1562 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1563 { /* end: all zeroes */ } 1564 }; 1565 1566 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1567 1568 static struct usb_driver brcmf_usbdrvr = { 1569 .name = KBUILD_MODNAME, 1570 .probe = brcmf_usb_probe, 1571 .disconnect = brcmf_usb_disconnect, 1572 .id_table = brcmf_usb_devid_table, 1573 .suspend = brcmf_usb_suspend, 1574 .resume = brcmf_usb_resume, 1575 .reset_resume = brcmf_usb_reset_resume, 1576 .supports_autosuspend = true, 1577 .disable_hub_initiated_lpm = 1, 1578 }; 1579 1580 static int brcmf_usb_reset_device(struct device *dev, void *notused) 1581 { 1582 /* device past is the usb interface so we 1583 * need to use parent here. 1584 */ 1585 brcmf_dev_reset(dev->parent); 1586 return 0; 1587 } 1588 1589 void brcmf_usb_exit(void) 1590 { 1591 struct device_driver *drv = &brcmf_usbdrvr.driver; 1592 int ret; 1593 1594 brcmf_dbg(USB, "Enter\n"); 1595 ret = driver_for_each_device(drv, NULL, NULL, 1596 brcmf_usb_reset_device); 1597 if (ret) 1598 brcmf_err("failed to reset all usb devices %d\n", ret); 1599 1600 usb_deregister(&brcmf_usbdrvr); 1601 } 1602 1603 int brcmf_usb_register(void) 1604 { 1605 brcmf_dbg(USB, "Enter\n"); 1606 return usb_register(&brcmf_usbdrvr); 1607 } 1608