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 38BRCMF_FW_DEF(43143, "brcmfmac43143"); 39BRCMF_FW_DEF(43236B, "brcmfmac43236b"); 40BRCMF_FW_DEF(43242A, "brcmfmac43242a"); 41BRCMF_FW_DEF(43569, "brcmfmac43569"); 42BRCMF_FW_DEF(4373, "brcmfmac4373"); 43 44static 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 96struct 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 106struct rdl_state_le { 107 __le32 state; 108 __le32 bytes; 109}; 110 111struct 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 120struct brcmf_usb_image { 121 struct list_head list; 122 s8 *fwname; 123 u8 *image; 124 int image_len; 125}; 126 127struct brcmf_usbdev_info { 128 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ 129 spinlock_t qlock; 130 struct list_head rx_freeq; 131 struct list_head rx_postq; 132 struct list_head tx_freeq; 133 struct list_head tx_postq; 134 uint rx_pipe, tx_pipe; 135 136 int rx_low_watermark; 137 int tx_low_watermark; 138 int tx_high_watermark; 139 int tx_freecount; 140 bool tx_flowblock; 141 spinlock_t tx_flowblock_lock; 142 143 struct brcmf_usbreq *tx_reqs; 144 struct brcmf_usbreq *rx_reqs; 145 146 char fw_name[BRCMF_FW_NAME_LEN]; 147 const u8 *image; /* buffer for combine fw and nvram */ 148 int image_len; 149 150 struct usb_device *usbdev; 151 struct device *dev; 152 struct completion dev_init_done; 153 154 int ctl_in_pipe, ctl_out_pipe; 155 struct urb *ctl_urb; /* URB for control endpoint */ 156 struct usb_ctrlrequest ctl_write; 157 struct usb_ctrlrequest ctl_read; 158 u32 ctl_urb_actual_length; 159 int ctl_urb_status; 160 int ctl_completed; 161 wait_queue_head_t ioctl_resp_wait; 162 ulong ctl_op; 163 u8 ifnum; 164 165 struct urb *bulk_urb; /* used for FW download */ 166 167 struct brcmf_mp_device *settings; 168}; 169 170static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 171 struct brcmf_usbreq *req); 172 173static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) 174{ 175 struct brcmf_bus *bus_if = dev_get_drvdata(dev); 176 return bus_if->bus_priv.usb; 177} 178 179static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) 180{ 181 return brcmf_usb_get_buspub(dev)->devinfo; 182} 183 184static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) 185{ 186 return wait_event_timeout(devinfo->ioctl_resp_wait, 187 devinfo->ctl_completed, IOCTL_RESP_TIMEOUT); 188} 189 190static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) 191{ 192 wake_up(&devinfo->ioctl_resp_wait); 193} 194 195static void 196brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) 197{ 198 brcmf_dbg(USB, "Enter, status=%d\n", status); 199 200 if (unlikely(devinfo == NULL)) 201 return; 202 203 if (type == BRCMF_USB_CBCTL_READ) { 204 if (status == 0) 205 devinfo->bus_pub.stats.rx_ctlpkts++; 206 else 207 devinfo->bus_pub.stats.rx_ctlerrs++; 208 } else if (type == BRCMF_USB_CBCTL_WRITE) { 209 if (status == 0) 210 devinfo->bus_pub.stats.tx_ctlpkts++; 211 else 212 devinfo->bus_pub.stats.tx_ctlerrs++; 213 } 214 215 devinfo->ctl_urb_status = status; 216 devinfo->ctl_completed = true; 217 brcmf_usb_ioctl_resp_wake(devinfo); 218} 219 220static void 221brcmf_usb_ctlread_complete(struct urb *urb) 222{ 223 struct brcmf_usbdev_info *devinfo = 224 (struct brcmf_usbdev_info *)urb->context; 225 226 brcmf_dbg(USB, "Enter\n"); 227 devinfo->ctl_urb_actual_length = urb->actual_length; 228 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, 229 urb->status); 230} 231 232static void 233brcmf_usb_ctlwrite_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 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, 240 urb->status); 241} 242 243static int 244brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 245{ 246 int ret; 247 u16 size; 248 249 brcmf_dbg(USB, "Enter\n"); 250 if (devinfo == NULL || buf == NULL || 251 len == 0 || devinfo->ctl_urb == NULL) 252 return -EINVAL; 253 254 size = len; 255 devinfo->ctl_write.wLength = cpu_to_le16p(&size); 256 devinfo->ctl_urb->transfer_buffer_length = size; 257 devinfo->ctl_urb_status = 0; 258 devinfo->ctl_urb_actual_length = 0; 259 260 usb_fill_control_urb(devinfo->ctl_urb, 261 devinfo->usbdev, 262 devinfo->ctl_out_pipe, 263 (unsigned char *) &devinfo->ctl_write, 264 buf, size, 265 (usb_complete_t)brcmf_usb_ctlwrite_complete, 266 devinfo); 267 268 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 269 if (ret < 0) 270 brcmf_err("usb_submit_urb failed %d\n", ret); 271 272 return ret; 273} 274 275static int 276brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) 277{ 278 int ret; 279 u16 size; 280 281 brcmf_dbg(USB, "Enter\n"); 282 if ((devinfo == NULL) || (buf == NULL) || (len == 0) 283 || (devinfo->ctl_urb == NULL)) 284 return -EINVAL; 285 286 size = len; 287 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 288 devinfo->ctl_urb->transfer_buffer_length = size; 289 290 devinfo->ctl_read.bRequestType = USB_DIR_IN 291 | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 292 devinfo->ctl_read.bRequest = 1; 293 294 usb_fill_control_urb(devinfo->ctl_urb, 295 devinfo->usbdev, 296 devinfo->ctl_in_pipe, 297 (unsigned char *) &devinfo->ctl_read, 298 buf, size, 299 (usb_complete_t)brcmf_usb_ctlread_complete, 300 devinfo); 301 302 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 303 if (ret < 0) 304 brcmf_err("usb_submit_urb failed %d\n", ret); 305 306 return ret; 307} 308 309static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) 310{ 311 int err = 0; 312 int timeout = 0; 313 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 314 struct usb_interface *intf = to_usb_interface(dev); 315 316 brcmf_dbg(USB, "Enter\n"); 317 318 err = usb_autopm_get_interface(intf); 319 if (err) 320 goto out; 321 322 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 323 err = -EIO; 324 goto fail; 325 } 326 327 if (test_and_set_bit(0, &devinfo->ctl_op)) { 328 err = -EIO; 329 goto fail; 330 } 331 332 devinfo->ctl_completed = false; 333 err = brcmf_usb_send_ctl(devinfo, buf, len); 334 if (err) { 335 brcmf_err("fail %d bytes: %d\n", err, len); 336 clear_bit(0, &devinfo->ctl_op); 337 goto fail; 338 } 339 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 340 if (!timeout) { 341 brcmf_err("Txctl wait timed out\n"); 342 usb_kill_urb(devinfo->ctl_urb); 343 err = -EIO; 344 goto fail; 345 } 346 clear_bit(0, &devinfo->ctl_op); 347 348fail: 349 usb_autopm_put_interface(intf); 350out: 351 return err; 352} 353 354static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) 355{ 356 int err = 0; 357 int timeout = 0; 358 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 359 struct usb_interface *intf = to_usb_interface(dev); 360 361 brcmf_dbg(USB, "Enter\n"); 362 363 err = usb_autopm_get_interface(intf); 364 if (err) 365 goto out; 366 367 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 368 err = -EIO; 369 goto fail; 370 } 371 372 if (test_and_set_bit(0, &devinfo->ctl_op)) { 373 err = -EIO; 374 goto fail; 375 } 376 377 devinfo->ctl_completed = false; 378 err = brcmf_usb_recv_ctl(devinfo, buf, len); 379 if (err) { 380 brcmf_err("fail %d bytes: %d\n", err, len); 381 clear_bit(0, &devinfo->ctl_op); 382 goto fail; 383 } 384 timeout = brcmf_usb_ioctl_resp_wait(devinfo); 385 err = devinfo->ctl_urb_status; 386 if (!timeout) { 387 brcmf_err("rxctl wait timed out\n"); 388 usb_kill_urb(devinfo->ctl_urb); 389 err = -EIO; 390 goto fail; 391 } 392 clear_bit(0, &devinfo->ctl_op); 393fail: 394 usb_autopm_put_interface(intf); 395 if (!err) 396 return devinfo->ctl_urb_actual_length; 397out: 398 return err; 399} 400 401static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, 402 struct list_head *q, int *counter) 403{ 404 unsigned long flags; 405 struct brcmf_usbreq *req; 406 spin_lock_irqsave(&devinfo->qlock, flags); 407 if (list_empty(q)) { 408 spin_unlock_irqrestore(&devinfo->qlock, flags); 409 return NULL; 410 } 411 req = list_entry(q->next, struct brcmf_usbreq, list); 412 list_del_init(q->next); 413 if (counter) 414 (*counter)--; 415 spin_unlock_irqrestore(&devinfo->qlock, flags); 416 return req; 417 418} 419 420static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, 421 struct list_head *q, struct brcmf_usbreq *req, 422 int *counter) 423{ 424 unsigned long flags; 425 spin_lock_irqsave(&devinfo->qlock, flags); 426 list_add_tail(&req->list, q); 427 if (counter) 428 (*counter)++; 429 spin_unlock_irqrestore(&devinfo->qlock, flags); 430} 431 432static struct brcmf_usbreq * 433brcmf_usbdev_qinit(struct list_head *q, int qsize) 434{ 435 int i; 436 struct brcmf_usbreq *req, *reqs; 437 438 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); 439 if (reqs == NULL) 440 return NULL; 441 442 req = reqs; 443 444 for (i = 0; i < qsize; i++) { 445 req->urb = usb_alloc_urb(0, GFP_ATOMIC); 446 if (!req->urb) 447 goto fail; 448 449 INIT_LIST_HEAD(&req->list); 450 list_add_tail(&req->list, q); 451 req++; 452 } 453 return reqs; 454fail: 455 brcmf_err("fail!\n"); 456 while (!list_empty(q)) { 457 req = list_entry(q->next, struct brcmf_usbreq, list); 458 if (req) 459 usb_free_urb(req->urb); 460 list_del(q->next); 461 } 462 kfree(reqs); 463 return NULL; 464 465} 466 467static void brcmf_usb_free_q(struct list_head *q) 468{ 469 struct brcmf_usbreq *req, *next; 470 471 list_for_each_entry_safe(req, next, q, list) { 472 if (!req->urb) { 473 brcmf_err("bad req\n"); 474 break; 475 } 476 usb_free_urb(req->urb); 477 list_del_init(&req->list); 478 } 479} 480 481static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, 482 struct brcmf_usbreq *req) 483{ 484 unsigned long flags; 485 486 spin_lock_irqsave(&devinfo->qlock, flags); 487 list_del_init(&req->list); 488 spin_unlock_irqrestore(&devinfo->qlock, flags); 489} 490 491 492static void brcmf_usb_tx_complete(struct urb *urb) 493{ 494 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 495 struct brcmf_usbdev_info *devinfo = req->devinfo; 496 unsigned long flags; 497 498 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, 499 req->skb); 500 brcmf_usb_del_fromq(devinfo, req); 501 502 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0); 503 req->skb = NULL; 504 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); 505 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 506 if (devinfo->tx_freecount > devinfo->tx_high_watermark && 507 devinfo->tx_flowblock) { 508 brcmf_proto_bcdc_txflowblock(devinfo->dev, false); 509 devinfo->tx_flowblock = false; 510 } 511 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 512} 513 514static void brcmf_usb_rx_complete(struct urb *urb) 515{ 516 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; 517 struct brcmf_usbdev_info *devinfo = req->devinfo; 518 struct sk_buff *skb; 519 520 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); 521 brcmf_usb_del_fromq(devinfo, req); 522 skb = req->skb; 523 req->skb = NULL; 524 525 /* zero length packets indicate usb "failure". Do not refill */ 526 if (urb->status != 0 || !urb->actual_length) { 527 brcmu_pkt_buf_free_skb(skb); 528 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 529 return; 530 } 531 532 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP || 533 devinfo->bus_pub.state == BRCMFMAC_USB_STATE_SLEEP) { 534 skb_put(skb, urb->actual_length); 535 brcmf_rx_frame(devinfo->dev, skb, true, true); 536 brcmf_usb_rx_refill(devinfo, req); 537 usb_mark_last_busy(urb->dev); 538 } else { 539 brcmu_pkt_buf_free_skb(skb); 540 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 541 } 542 return; 543 544} 545 546static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, 547 struct brcmf_usbreq *req) 548{ 549 struct sk_buff *skb; 550 int ret; 551 552 if (!req || !devinfo) 553 return; 554 555 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); 556 if (!skb) { 557 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 558 return; 559 } 560 req->skb = skb; 561 562 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, 563 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, 564 req); 565 req->devinfo = devinfo; 566 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); 567 568 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 569 if (ret) { 570 brcmf_usb_del_fromq(devinfo, req); 571 brcmu_pkt_buf_free_skb(req->skb); 572 req->skb = NULL; 573 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); 574 } 575 return; 576} 577 578static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) 579{ 580 struct brcmf_usbreq *req; 581 582 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 583 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); 584 return; 585 } 586 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) 587 brcmf_usb_rx_refill(devinfo, req); 588} 589 590static void 591brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) 592{ 593 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; 594 595 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", 596 devinfo->bus_pub.state, state); 597 598 if (devinfo->bus_pub.state == state) 599 return; 600 601 devinfo->bus_pub.state = state; 602 603 /* update state of upper layer */ 604 if (state == BRCMFMAC_USB_STATE_DOWN) { 605 brcmf_dbg(USB, "DBUS is down\n"); 606 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); 607 } else if (state == BRCMFMAC_USB_STATE_UP) { 608 brcmf_dbg(USB, "DBUS is up\n"); 609 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); 610 } else { 611 brcmf_dbg(USB, "DBUS current state=%d\n", state); 612 } 613} 614 615static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) 616{ 617 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 618 struct brcmf_usbreq *req; 619 int ret; 620 unsigned long flags; 621 struct usb_interface *intf = to_usb_interface(dev); 622 623 ret = usb_autopm_get_interface(intf); 624 if (ret) 625 goto out; 626 627 brcmf_dbg(USB, "Enter, skb=%p\n", skb); 628 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { 629 ret = -EIO; 630 goto fail; 631 } 632 633 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, 634 &devinfo->tx_freecount); 635 if (!req) { 636 brcmf_err("no req to send\n"); 637 ret = -ENOMEM; 638 goto fail; 639 } 640 641 req->skb = skb; 642 req->devinfo = devinfo; 643 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, 644 skb->data, skb->len, brcmf_usb_tx_complete, req); 645 req->urb->transfer_flags |= URB_ZERO_PACKET; 646 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); 647 ret = usb_submit_urb(req->urb, GFP_ATOMIC); 648 if (ret) { 649 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); 650 brcmf_usb_del_fromq(devinfo, req); 651 req->skb = NULL; 652 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, 653 &devinfo->tx_freecount); 654 goto fail; 655 } 656 657 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); 658 if (devinfo->tx_freecount < devinfo->tx_low_watermark && 659 !devinfo->tx_flowblock) { 660 brcmf_proto_bcdc_txflowblock(dev, true); 661 devinfo->tx_flowblock = true; 662 } 663 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); 664 665fail: 666 usb_autopm_put_interface(intf); 667out: 668 return ret; 669} 670 671 672static int brcmf_usb_up(struct device *dev) 673{ 674 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 675 676 brcmf_dbg(USB, "Enter\n"); 677 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) 678 return 0; 679 680 /* Success, indicate devinfo is fully up */ 681 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); 682 683 if (devinfo->ctl_urb) { 684 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); 685 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); 686 687 /* CTL Write */ 688 devinfo->ctl_write.bRequestType = 689 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 690 devinfo->ctl_write.bRequest = 0; 691 devinfo->ctl_write.wValue = cpu_to_le16(0); 692 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); 693 694 /* CTL Read */ 695 devinfo->ctl_read.bRequestType = 696 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; 697 devinfo->ctl_read.bRequest = 1; 698 devinfo->ctl_read.wValue = cpu_to_le16(0); 699 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); 700 } 701 brcmf_usb_rx_fill_all(devinfo); 702 return 0; 703} 704 705static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) 706{ 707 int i; 708 709 if (devinfo->ctl_urb) 710 usb_kill_urb(devinfo->ctl_urb); 711 if (devinfo->bulk_urb) 712 usb_kill_urb(devinfo->bulk_urb); 713 if (devinfo->tx_reqs) 714 for (i = 0; i < devinfo->bus_pub.ntxq; i++) 715 usb_kill_urb(devinfo->tx_reqs[i].urb); 716 if (devinfo->rx_reqs) 717 for (i = 0; i < devinfo->bus_pub.nrxq; i++) 718 usb_kill_urb(devinfo->rx_reqs[i].urb); 719} 720 721static void brcmf_usb_down(struct device *dev) 722{ 723 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); 724 725 brcmf_dbg(USB, "Enter\n"); 726 if (devinfo == NULL) 727 return; 728 729 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) 730 return; 731 732 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); 733 734 brcmf_cancel_all_urbs(devinfo); 735} 736 737static void 738brcmf_usb_sync_complete(struct urb *urb) 739{ 740 struct brcmf_usbdev_info *devinfo = 741 (struct brcmf_usbdev_info *)urb->context; 742 743 devinfo->ctl_completed = true; 744 brcmf_usb_ioctl_resp_wake(devinfo); 745} 746 747static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, 748 void *buffer, int buflen) 749{ 750 int ret; 751 char *tmpbuf; 752 u16 size; 753 754 if ((!devinfo) || (devinfo->ctl_urb == NULL)) 755 return -EINVAL; 756 757 tmpbuf = kmalloc(buflen, GFP_ATOMIC); 758 if (!tmpbuf) 759 return -ENOMEM; 760 761 size = buflen; 762 devinfo->ctl_urb->transfer_buffer_length = size; 763 764 devinfo->ctl_read.wLength = cpu_to_le16p(&size); 765 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | 766 USB_RECIP_INTERFACE; 767 devinfo->ctl_read.bRequest = cmd; 768 769 usb_fill_control_urb(devinfo->ctl_urb, 770 devinfo->usbdev, 771 usb_rcvctrlpipe(devinfo->usbdev, 0), 772 (unsigned char *) &devinfo->ctl_read, 773 (void *) tmpbuf, size, 774 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 775 776 devinfo->ctl_completed = false; 777 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); 778 if (ret < 0) { 779 brcmf_err("usb_submit_urb failed %d\n", ret); 780 goto finalize; 781 } 782 783 if (!brcmf_usb_ioctl_resp_wait(devinfo)) { 784 usb_kill_urb(devinfo->ctl_urb); 785 ret = -ETIMEDOUT; 786 } else { 787 memcpy(buffer, tmpbuf, buflen); 788 } 789 790finalize: 791 kfree(tmpbuf); 792 return ret; 793} 794 795static bool 796brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) 797{ 798 struct bootrom_id_le id; 799 u32 chipid, chiprev; 800 801 brcmf_dbg(USB, "Enter\n"); 802 803 if (devinfo == NULL) 804 return false; 805 806 /* Check if firmware downloaded already by querying runtime ID */ 807 id.chip = cpu_to_le32(0xDEAD); 808 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 809 810 chipid = le32_to_cpu(id.chip); 811 chiprev = le32_to_cpu(id.chiprev); 812 813 if ((chipid & 0x4300) == 0x4300) 814 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); 815 else 816 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); 817 if (chipid == BRCMF_POSTBOOT_ID) { 818 brcmf_dbg(USB, "firmware already downloaded\n"); 819 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 820 return false; 821 } else { 822 devinfo->bus_pub.devid = chipid; 823 devinfo->bus_pub.chiprev = chiprev; 824 } 825 return true; 826} 827 828static int 829brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) 830{ 831 struct bootrom_id_le id; 832 u32 loop_cnt; 833 int err; 834 835 brcmf_dbg(USB, "Enter\n"); 836 837 loop_cnt = 0; 838 do { 839 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); 840 loop_cnt++; 841 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ 842 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); 843 if ((err) && (err != -ETIMEDOUT)) 844 return err; 845 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) 846 break; 847 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); 848 849 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { 850 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", 851 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); 852 853 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); 854 return 0; 855 } else { 856 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", 857 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); 858 return -EINVAL; 859 } 860} 861 862 863static int 864brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) 865{ 866 int ret; 867 868 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) 869 return -EINVAL; 870 871 /* Prepare the URB */ 872 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, 873 devinfo->tx_pipe, buffer, len, 874 (usb_complete_t)brcmf_usb_sync_complete, devinfo); 875 876 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; 877 878 devinfo->ctl_completed = false; 879 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); 880 if (ret) { 881 brcmf_err("usb_submit_urb failed %d\n", ret); 882 return ret; 883 } 884 ret = brcmf_usb_ioctl_resp_wait(devinfo); 885 return (ret == 0); 886} 887 888static int 889brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) 890{ 891 unsigned int sendlen, sent, dllen; 892 char *bulkchunk = NULL, *dlpos; 893 struct rdl_state_le state; 894 u32 rdlstate, rdlbytes; 895 int err = 0; 896 897 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); 898 899 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); 900 if (bulkchunk == NULL) { 901 err = -ENOMEM; 902 goto fail; 903 } 904 905 /* 1) Prepare USB boot loader for runtime image */ 906 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); 907 908 rdlstate = le32_to_cpu(state.state); 909 rdlbytes = le32_to_cpu(state.bytes); 910 911 /* 2) Check we are in the Waiting state */ 912 if (rdlstate != DL_WAITING) { 913 brcmf_err("Failed to DL_START\n"); 914 err = -EINVAL; 915 goto fail; 916 } 917 sent = 0; 918 dlpos = fw; 919 dllen = fwlen; 920 921 /* Get chip id and rev */ 922 while (rdlbytes != dllen) { 923 /* Wait until the usb device reports it received all 924 * the bytes we sent */ 925 if ((rdlbytes == sent) && (rdlbytes != dllen)) { 926 if ((dllen-sent) < TRX_RDL_CHUNK) 927 sendlen = dllen-sent; 928 else 929 sendlen = TRX_RDL_CHUNK; 930 931 /* simply avoid having to send a ZLP by ensuring we 932 * never have an even 933 * multiple of 64 934 */ 935 if (!(sendlen % 64)) 936 sendlen -= 4; 937 938 /* send data */ 939 memcpy(bulkchunk, dlpos, sendlen); 940 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, 941 sendlen)) { 942 brcmf_err("send_bulk failed\n"); 943 err = -EINVAL; 944 goto fail; 945 } 946 947 dlpos += sendlen; 948 sent += sendlen; 949 } 950 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, 951 sizeof(state)); 952 if (err) { 953 brcmf_err("DL_GETSTATE Failed\n"); 954 goto fail; 955 } 956 957 rdlstate = le32_to_cpu(state.state); 958 rdlbytes = le32_to_cpu(state.bytes); 959 960 /* restart if an error is reported */ 961 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { 962 brcmf_err("Bad Hdr or Bad CRC state %d\n", 963 rdlstate); 964 err = -EINVAL; 965 goto fail; 966 } 967 } 968 969fail: 970 kfree(bulkchunk); 971 brcmf_dbg(USB, "Exit, err=%d\n", err); 972 return err; 973} 974 975static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) 976{ 977 int err; 978 979 brcmf_dbg(USB, "Enter\n"); 980 981 if (devinfo == NULL) 982 return -EINVAL; 983 984 if (devinfo->bus_pub.devid == 0xDEAD) 985 return -EINVAL; 986 987 err = brcmf_usb_dl_writeimage(devinfo, fw, len); 988 if (err == 0) 989 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; 990 else 991 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; 992 brcmf_dbg(USB, "Exit, err=%d\n", err); 993 994 return err; 995} 996 997static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) 998{ 999 struct rdl_state_le state; 1000 1001 brcmf_dbg(USB, "Enter\n"); 1002 if (!devinfo) 1003 return -EINVAL; 1004 1005 if (devinfo->bus_pub.devid == 0xDEAD) 1006 return -EINVAL; 1007 1008 /* Check we are runnable */ 1009 state.state = 0; 1010 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); 1011 1012 /* Start the image */ 1013 if (state.state == cpu_to_le32(DL_RUNNABLE)) { 1014 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) 1015 return -ENODEV; 1016 if (brcmf_usb_resetcfg(devinfo)) 1017 return -ENODEV; 1018 /* The Dongle may go for re-enumeration. */ 1019 } else { 1020 brcmf_err("Dongle not runnable\n"); 1021 return -EINVAL; 1022 } 1023 brcmf_dbg(USB, "Exit\n"); 1024 return 0; 1025} 1026 1027static int 1028brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) 1029{ 1030 int err; 1031 struct usb_interface *intf; 1032 1033 brcmf_dbg(USB, "Enter\n"); 1034 if (!devinfo) { 1035 err = -ENODEV; 1036 goto out; 1037 } 1038 1039 if (!devinfo->image) { 1040 brcmf_err("No firmware!\n"); 1041 err = -ENOENT; 1042 goto out; 1043 } 1044 1045 intf = to_usb_interface(devinfo->dev); 1046 err = usb_autopm_get_interface(intf); 1047 if (err) 1048 goto out; 1049 1050 err = brcmf_usb_dlstart(devinfo, 1051 (u8 *)devinfo->image, devinfo->image_len); 1052 if (err == 0) 1053 err = brcmf_usb_dlrun(devinfo); 1054 1055 usb_autopm_put_interface(intf); 1056out: 1057 return err; 1058} 1059 1060 1061static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) 1062{ 1063 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); 1064 1065 /* free the URBS */ 1066 brcmf_usb_free_q(&devinfo->rx_freeq); 1067 brcmf_usb_free_q(&devinfo->tx_freeq); 1068 1069 usb_free_urb(devinfo->ctl_urb); 1070 usb_free_urb(devinfo->bulk_urb); 1071 1072 kfree(devinfo->tx_reqs); 1073 kfree(devinfo->rx_reqs); 1074 1075 if (devinfo->settings) 1076 brcmf_release_module_param(devinfo->settings); 1077} 1078 1079 1080static int check_file(const u8 *headers) 1081{ 1082 struct trx_header_le *trx; 1083 int actual_len = -1; 1084 1085 brcmf_dbg(USB, "Enter\n"); 1086 /* Extract trx header */ 1087 trx = (struct trx_header_le *) headers; 1088 if (trx->magic != cpu_to_le32(TRX_MAGIC)) 1089 return -1; 1090 1091 headers += sizeof(struct trx_header_le); 1092 1093 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { 1094 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); 1095 return actual_len + sizeof(struct trx_header_le); 1096 } 1097 return -1; 1098} 1099 1100 1101static 1102struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, 1103 int nrxq, int ntxq) 1104{ 1105 brcmf_dbg(USB, "Enter\n"); 1106 1107 devinfo->bus_pub.nrxq = nrxq; 1108 devinfo->rx_low_watermark = nrxq / 2; 1109 devinfo->bus_pub.devinfo = devinfo; 1110 devinfo->bus_pub.ntxq = ntxq; 1111 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; 1112 1113 /* flow control when too many tx urbs posted */ 1114 devinfo->tx_low_watermark = ntxq / 4; 1115 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; 1116 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; 1117 1118 /* Initialize other structure content */ 1119 init_waitqueue_head(&devinfo->ioctl_resp_wait); 1120 1121 /* Initialize the spinlocks */ 1122 spin_lock_init(&devinfo->qlock); 1123 spin_lock_init(&devinfo->tx_flowblock_lock); 1124 1125 INIT_LIST_HEAD(&devinfo->rx_freeq); 1126 INIT_LIST_HEAD(&devinfo->rx_postq); 1127 1128 INIT_LIST_HEAD(&devinfo->tx_freeq); 1129 INIT_LIST_HEAD(&devinfo->tx_postq); 1130 1131 devinfo->tx_flowblock = false; 1132 1133 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); 1134 if (!devinfo->rx_reqs) 1135 goto error; 1136 1137 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); 1138 if (!devinfo->tx_reqs) 1139 goto error; 1140 devinfo->tx_freecount = ntxq; 1141 1142 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); 1143 if (!devinfo->ctl_urb) 1144 goto error; 1145 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); 1146 if (!devinfo->bulk_urb) 1147 goto error; 1148 1149 return &devinfo->bus_pub; 1150 1151error: 1152 brcmf_err("failed!\n"); 1153 brcmf_usb_detach(devinfo); 1154 return NULL; 1155} 1156 1157static int brcmf_usb_get_blob(struct device *dev, const struct firmware **fw, 1158 enum brcmf_blob_type type) 1159{ 1160 /* No blobs for USB devices... */ 1161 return -ENOENT; 1162} 1163 1164static const struct brcmf_bus_ops brcmf_usb_bus_ops = { 1165 .preinit = brcmf_usb_up, 1166 .stop = brcmf_usb_down, 1167 .txdata = brcmf_usb_tx, 1168 .txctl = brcmf_usb_tx_ctlpkt, 1169 .rxctl = brcmf_usb_rx_ctlpkt, 1170 .get_blob = brcmf_usb_get_blob, 1171}; 1172 1173#define BRCMF_USB_FW_CODE 0 1174 1175static void brcmf_usb_probe_phase2(struct device *dev, int ret, 1176 struct brcmf_fw_request *fwreq) 1177{ 1178 struct brcmf_bus *bus = dev_get_drvdata(dev); 1179 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo; 1180 const struct firmware *fw; 1181 1182 if (ret) 1183 goto error; 1184 1185 brcmf_dbg(USB, "Start fw downloading\n"); 1186 1187 fw = fwreq->items[BRCMF_USB_FW_CODE].binary; 1188 kfree(fwreq); 1189 1190 ret = check_file(fw->data); 1191 if (ret < 0) { 1192 brcmf_err("invalid firmware\n"); 1193 release_firmware(fw); 1194 goto error; 1195 } 1196 1197 devinfo->image = fw->data; 1198 devinfo->image_len = fw->size; 1199 1200 ret = brcmf_usb_fw_download(devinfo); 1201 release_firmware(fw); 1202 if (ret) 1203 goto error; 1204 1205 ret = brcmf_alloc(devinfo->dev, devinfo->settings); 1206 if (ret) 1207 goto error; 1208 1209 /* Attach to the common driver interface */ 1210 ret = brcmf_attach(devinfo->dev); 1211 if (ret) 1212 goto error; 1213 1214 complete(&devinfo->dev_init_done); 1215 return; 1216error: 1217 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); 1218 complete(&devinfo->dev_init_done); 1219 device_release_driver(dev); 1220} 1221 1222static struct brcmf_fw_request * 1223brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo) 1224{ 1225 struct brcmf_fw_request *fwreq; 1226 struct brcmf_fw_name fwnames[] = { 1227 { ".bin", devinfo->fw_name }, 1228 }; 1229 1230 fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid, 1231 devinfo->bus_pub.chiprev, 1232 brcmf_usb_fwnames, 1233 ARRAY_SIZE(brcmf_usb_fwnames), 1234 fwnames, ARRAY_SIZE(fwnames)); 1235 if (!fwreq) 1236 return NULL; 1237 1238 fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY; 1239 1240 return fwreq; 1241} 1242 1243static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo, 1244 enum brcmf_fwvendor fwvid) 1245{ 1246 struct brcmf_bus *bus = NULL; 1247 struct brcmf_usbdev *bus_pub = NULL; 1248 struct device *dev = devinfo->dev; 1249 struct brcmf_fw_request *fwreq; 1250 int ret; 1251 1252 brcmf_dbg(USB, "Enter\n"); 1253 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); 1254 if (!bus_pub) 1255 return -ENODEV; 1256 1257 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); 1258 if (!bus) { 1259 ret = -ENOMEM; 1260 goto fail; 1261 } 1262 1263 bus->dev = dev; 1264 bus_pub->bus = bus; 1265 bus->bus_priv.usb = bus_pub; 1266 dev_set_drvdata(dev, bus); 1267 bus->ops = &brcmf_usb_bus_ops; 1268 bus->proto_type = BRCMF_PROTO_BCDC; 1269 bus->fwvid = fwvid; 1270 bus->always_use_fws_queue = true; 1271#ifdef CONFIG_PM 1272 bus->wowl_supported = true; 1273#endif 1274 1275 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB, 1276 bus_pub->devid, 1277 bus_pub->chiprev); 1278 if (!devinfo->settings) { 1279 ret = -ENOMEM; 1280 goto fail; 1281 } 1282 1283 if (!brcmf_usb_dlneeded(devinfo)) { 1284 ret = brcmf_alloc(devinfo->dev, devinfo->settings); 1285 if (ret) 1286 goto fail; 1287 ret = brcmf_attach(devinfo->dev); 1288 if (ret) 1289 goto fail; 1290 /* we are done */ 1291 complete(&devinfo->dev_init_done); 1292 return 0; 1293 } 1294 bus->chip = bus_pub->devid; 1295 bus->chiprev = bus_pub->chiprev; 1296 1297 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1298 if (!fwreq) { 1299 ret = -ENOMEM; 1300 goto fail; 1301 } 1302 1303 /* request firmware here */ 1304 ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2); 1305 if (ret) { 1306 brcmf_err("firmware request failed: %d\n", ret); 1307 kfree(fwreq); 1308 goto fail; 1309 } 1310 1311 return 0; 1312 1313fail: 1314 /* Release resources in reverse order */ 1315 brcmf_free(devinfo->dev); 1316 kfree(bus); 1317 brcmf_usb_detach(devinfo); 1318 return ret; 1319} 1320 1321static void 1322brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) 1323{ 1324 if (!devinfo) 1325 return; 1326 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); 1327 1328 brcmf_detach(devinfo->dev); 1329 brcmf_free(devinfo->dev); 1330 kfree(devinfo->bus_pub.bus); 1331 brcmf_usb_detach(devinfo); 1332} 1333 1334/* Forward declaration for usb_match_id() call */ 1335static const struct usb_device_id brcmf_usb_devid_table[]; 1336 1337static int 1338brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1339{ 1340 struct usb_device *usb = interface_to_usbdev(intf); 1341 struct brcmf_usbdev_info *devinfo; 1342 struct usb_interface_descriptor *desc; 1343 struct usb_endpoint_descriptor *endpoint; 1344 int ret = 0; 1345 u32 num_of_eps; 1346 u8 endpoint_num, ep; 1347 1348 if (!id) { 1349 id = usb_match_id(intf, brcmf_usb_devid_table); 1350 if (!id) { 1351 dev_err(&intf->dev, "Error could not find matching usb_device_id\n"); 1352 return -ENODEV; 1353 } 1354 } 1355 1356 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); 1357 1358 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); 1359 if (devinfo == NULL) 1360 return -ENOMEM; 1361 1362 devinfo->usbdev = usb; 1363 devinfo->dev = &usb->dev; 1364 /* Init completion, to protect for disconnect while still loading. 1365 * Necessary because of the asynchronous firmware load construction 1366 */ 1367 init_completion(&devinfo->dev_init_done); 1368 1369 usb_set_intfdata(intf, devinfo); 1370 1371 intf->needs_remote_wakeup = 1; 1372 1373 /* Check that the device supports only one configuration */ 1374 if (usb->descriptor.bNumConfigurations != 1) { 1375 brcmf_err("Number of configurations: %d not supported\n", 1376 usb->descriptor.bNumConfigurations); 1377 ret = -ENODEV; 1378 goto fail; 1379 } 1380 1381 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && 1382 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && 1383 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { 1384 brcmf_err("Device class: 0x%x not supported\n", 1385 usb->descriptor.bDeviceClass); 1386 ret = -ENODEV; 1387 goto fail; 1388 } 1389 1390 desc = &intf->cur_altsetting->desc; 1391 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || 1392 (desc->bInterfaceSubClass != 2) || 1393 (desc->bInterfaceProtocol != 0xff)) { 1394 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", 1395 desc->bInterfaceNumber, desc->bInterfaceClass, 1396 desc->bInterfaceSubClass, desc->bInterfaceProtocol); 1397 ret = -ENODEV; 1398 goto fail; 1399 } 1400 1401 num_of_eps = desc->bNumEndpoints; 1402 for (ep = 0; ep < num_of_eps; ep++) { 1403 endpoint = &intf->cur_altsetting->endpoint[ep].desc; 1404 endpoint_num = usb_endpoint_num(endpoint); 1405 if (!usb_endpoint_xfer_bulk(endpoint)) 1406 continue; 1407 if (usb_endpoint_dir_in(endpoint)) { 1408 if (!devinfo->rx_pipe) 1409 devinfo->rx_pipe = 1410 usb_rcvbulkpipe(usb, endpoint_num); 1411 } else { 1412 if (!devinfo->tx_pipe) 1413 devinfo->tx_pipe = 1414 usb_sndbulkpipe(usb, endpoint_num); 1415 } 1416 } 1417 if (devinfo->rx_pipe == 0) { 1418 brcmf_err("No RX (in) Bulk EP found\n"); 1419 ret = -ENODEV; 1420 goto fail; 1421 } 1422 if (devinfo->tx_pipe == 0) { 1423 brcmf_err("No TX (out) Bulk EP found\n"); 1424 ret = -ENODEV; 1425 goto fail; 1426 } 1427 1428 devinfo->ifnum = desc->bInterfaceNumber; 1429 1430 if (usb->speed == USB_SPEED_SUPER_PLUS) 1431 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n"); 1432 else if (usb->speed == USB_SPEED_SUPER) 1433 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); 1434 else if (usb->speed == USB_SPEED_HIGH) 1435 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); 1436 else 1437 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); 1438 1439 ret = brcmf_usb_probe_cb(devinfo, id->driver_info); 1440 if (ret) 1441 goto fail; 1442 1443 /* Success */ 1444 return 0; 1445 1446fail: 1447 complete(&devinfo->dev_init_done); 1448 kfree(devinfo); 1449 usb_set_intfdata(intf, NULL); 1450 return ret; 1451} 1452 1453static void 1454brcmf_usb_disconnect(struct usb_interface *intf) 1455{ 1456 struct brcmf_usbdev_info *devinfo; 1457 1458 brcmf_dbg(USB, "Enter\n"); 1459 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); 1460 1461 if (devinfo) { 1462 wait_for_completion(&devinfo->dev_init_done); 1463 /* Make sure that devinfo still exists. Firmware probe routines 1464 * may have released the device and cleared the intfdata. 1465 */ 1466 if (!usb_get_intfdata(intf)) 1467 goto done; 1468 1469 brcmf_usb_disconnect_cb(devinfo); 1470 kfree(devinfo); 1471 } 1472done: 1473 brcmf_dbg(USB, "Exit\n"); 1474} 1475 1476/* 1477 * only need to signal the bus being down and update the state. 1478 */ 1479static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) 1480{ 1481 struct usb_device *usb = interface_to_usbdev(intf); 1482 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1483 1484 brcmf_dbg(USB, "Enter\n"); 1485 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; 1486 brcmf_cancel_all_urbs(devinfo); 1487 device_set_wakeup_enable(devinfo->dev, true); 1488 return 0; 1489} 1490 1491/* 1492 * (re-) start the bus. 1493 */ 1494static int brcmf_usb_resume(struct usb_interface *intf) 1495{ 1496 struct usb_device *usb = interface_to_usbdev(intf); 1497 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1498 1499 brcmf_dbg(USB, "Enter\n"); 1500 1501 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; 1502 brcmf_usb_rx_fill_all(devinfo); 1503 device_set_wakeup_enable(devinfo->dev, false); 1504 return 0; 1505} 1506 1507static int brcmf_usb_reset_resume(struct usb_interface *intf) 1508{ 1509 struct usb_device *usb = interface_to_usbdev(intf); 1510 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); 1511 struct brcmf_fw_request *fwreq; 1512 int ret; 1513 1514 brcmf_dbg(USB, "Enter\n"); 1515 1516 fwreq = brcmf_usb_prepare_fw_request(devinfo); 1517 if (!fwreq) 1518 return -ENOMEM; 1519 1520 ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2); 1521 if (ret < 0) 1522 kfree(fwreq); 1523 1524 return ret; 1525} 1526 1527#define BRCMF_USB_DEVICE(dev_id) \ 1528 { \ 1529 USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id), \ 1530 .driver_info = BRCMF_FWVENDOR_WCC \ 1531 } 1532 1533#define LINKSYS_USB_DEVICE(dev_id) \ 1534 { \ 1535 USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id), \ 1536 .driver_info = BRCMF_FWVENDOR_WCC \ 1537 } 1538 1539#define CYPRESS_USB_DEVICE(dev_id) \ 1540 { \ 1541 USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id), \ 1542 .driver_info = BRCMF_FWVENDOR_WCC \ 1543 } 1544 1545static const struct usb_device_id brcmf_usb_devid_table[] = { 1546 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), 1547 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), 1548 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), 1549 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), 1550 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID), 1551 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID), 1552 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, 1553 /* special entry for device with firmware loaded and running */ 1554 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1555 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), 1556 { /* end: all zeroes */ } 1557}; 1558 1559MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); 1560 1561static struct usb_driver brcmf_usbdrvr = { 1562 .name = KBUILD_MODNAME, 1563 .probe = brcmf_usb_probe, 1564 .disconnect = brcmf_usb_disconnect, 1565 .id_table = brcmf_usb_devid_table, 1566 .suspend = brcmf_usb_suspend, 1567 .resume = brcmf_usb_resume, 1568 .reset_resume = brcmf_usb_reset_resume, 1569 .supports_autosuspend = true, 1570 .disable_hub_initiated_lpm = 1, 1571}; 1572 1573static int brcmf_usb_reset_device(struct device *dev, void *notused) 1574{ 1575 /* device past is the usb interface so we 1576 * need to use parent here. 1577 */ 1578 brcmf_dev_reset(dev->parent); 1579 return 0; 1580} 1581 1582void brcmf_usb_exit(void) 1583{ 1584 struct device_driver *drv = &brcmf_usbdrvr.driver; 1585 int ret; 1586 1587 brcmf_dbg(USB, "Enter\n"); 1588 ret = driver_for_each_device(drv, NULL, NULL, 1589 brcmf_usb_reset_device); 1590 if (ret) 1591 brcmf_err("failed to reset all usb devices %d\n", ret); 1592 1593 usb_deregister(&brcmf_usbdrvr); 1594} 1595 1596int brcmf_usb_register(void) 1597{ 1598 brcmf_dbg(USB, "Enter\n"); 1599 return usb_register(&brcmf_usbdrvr); 1600} 1601