projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[deliverable/linux.git] / drivers / net / wireless / brcm80211 / brcmfmac / usb.c
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 <brcmu_wifi.h>
25 #include <dhd_bus.h>
26 #include <dhd_dbg.h>
27
28 #include "usb_rdl.h"
29 #include "usb.h"
30
31 #define IOCTL_RESP_TIMEOUT 2000
32
33 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */
34 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10
35
36 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle
37 has boot up */
38 #define BRCMF_USB_NRXQ 50
39 #define BRCMF_USB_NTXQ 50
40
41 #define CONFIGDESC(usb) (&((usb)->actconfig)->desc)
42 #define IFPTR(usb, idx) ((usb)->actconfig->interface[(idx)])
43 #define IFALTS(usb, idx) (IFPTR((usb), (idx))->altsetting[0])
44 #define IFDESC(usb, idx) IFALTS((usb), (idx)).desc
45 #define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[(ep)]).desc
46
47 #define CONTROL_IF 0
48 #define BULK_IF 0
49
50 #define BRCMF_USB_CBCTL_WRITE 0
51 #define BRCMF_USB_CBCTL_READ 1
52 #define BRCMF_USB_MAX_PKT_SIZE 1600
53
54 #define BRCMF_USB_43143_FW_NAME "brcm/brcmfmac43143.bin"
55 #define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin"
56 #define BRCMF_USB_43242_FW_NAME "brcm/brcmfmac43242a.bin"
57
58 struct brcmf_usb_image {
59 struct list_head list;
60 s8 *fwname;
61 u8 *image;
62 int image_len;
63 };
64 static struct list_head fw_image_list;
65
66 struct intr_transfer_buf {
67 u32 notification;
68 u32 reserved;
69 };
70
71 struct brcmf_usbdev_info {
72 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */
73 spinlock_t qlock;
74 struct list_head rx_freeq;
75 struct list_head rx_postq;
76 struct list_head tx_freeq;
77 struct list_head tx_postq;
78 uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2;
79
80 int rx_low_watermark;
81 int tx_low_watermark;
82 int tx_high_watermark;
83 int tx_freecount;
84 bool tx_flowblock;
85 spinlock_t tx_flowblock_lock;
86
87 struct brcmf_usbreq *tx_reqs;
88 struct brcmf_usbreq *rx_reqs;
89
90 u8 *image; /* buffer for combine fw and nvram */
91 int image_len;
92
93 struct usb_device *usbdev;
94 struct device *dev;
95
96 int ctl_in_pipe, ctl_out_pipe;
97 struct urb *ctl_urb; /* URB for control endpoint */
98 struct usb_ctrlrequest ctl_write;
99 struct usb_ctrlrequest ctl_read;
100 u32 ctl_urb_actual_length;
101 int ctl_urb_status;
102 int ctl_completed;
103 wait_queue_head_t ioctl_resp_wait;
104 ulong ctl_op;
105
106 struct urb *bulk_urb; /* used for FW download */
107 struct urb *intr_urb; /* URB for interrupt endpoint */
108 int intr_size; /* Size of interrupt message */
109 int interval; /* Interrupt polling interval */
110 struct intr_transfer_buf intr; /* Data buffer for interrupt endpoint */
111 };
112
113 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
114 struct brcmf_usbreq *req);
115
116 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev)
117 {
118 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
119 return bus_if->bus_priv.usb;
120 }
121
122 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
123 {
124 return brcmf_usb_get_buspub(dev)->devinfo;
125 }
126
127 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo)
128 {
129 return wait_event_timeout(devinfo->ioctl_resp_wait,
130 devinfo->ctl_completed,
131 msecs_to_jiffies(IOCTL_RESP_TIMEOUT));
132 }
133
134 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
135 {
136 if (waitqueue_active(&devinfo->ioctl_resp_wait))
137 wake_up(&devinfo->ioctl_resp_wait);
138 }
139
140 static void
141 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
142 {
143 brcmf_dbg(USB, "Enter, status=%d\n", status);
144
145 if (unlikely(devinfo == NULL))
146 return;
147
148 if (type == BRCMF_USB_CBCTL_READ) {
149 if (status == 0)
150 devinfo->bus_pub.stats.rx_ctlpkts++;
151 else
152 devinfo->bus_pub.stats.rx_ctlerrs++;
153 } else if (type == BRCMF_USB_CBCTL_WRITE) {
154 if (status == 0)
155 devinfo->bus_pub.stats.tx_ctlpkts++;
156 else
157 devinfo->bus_pub.stats.tx_ctlerrs++;
158 }
159
160 devinfo->ctl_urb_status = status;
161 devinfo->ctl_completed = true;
162 brcmf_usb_ioctl_resp_wake(devinfo);
163 }
164
165 static void
166 brcmf_usb_ctlread_complete(struct urb *urb)
167 {
168 struct brcmf_usbdev_info *devinfo =
169 (struct brcmf_usbdev_info *)urb->context;
170
171 brcmf_dbg(USB, "Enter\n");
172 devinfo->ctl_urb_actual_length = urb->actual_length;
173 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
174 urb->status);
175 }
176
177 static void
178 brcmf_usb_ctlwrite_complete(struct urb *urb)
179 {
180 struct brcmf_usbdev_info *devinfo =
181 (struct brcmf_usbdev_info *)urb->context;
182
183 brcmf_dbg(USB, "Enter\n");
184 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
185 urb->status);
186 }
187
188 static int
189 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
190 {
191 int ret;
192 u16 size;
193
194 brcmf_dbg(USB, "Enter\n");
195 if (devinfo == NULL || buf == NULL ||
196 len == 0 || devinfo->ctl_urb == NULL)
197 return -EINVAL;
198
199 size = len;
200 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
201 devinfo->ctl_urb->transfer_buffer_length = size;
202 devinfo->ctl_urb_status = 0;
203 devinfo->ctl_urb_actual_length = 0;
204
205 usb_fill_control_urb(devinfo->ctl_urb,
206 devinfo->usbdev,
207 devinfo->ctl_out_pipe,
208 (unsigned char *) &devinfo->ctl_write,
209 buf, size,
210 (usb_complete_t)brcmf_usb_ctlwrite_complete,
211 devinfo);
212
213 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
214 if (ret < 0)
215 brcmf_err("usb_submit_urb failed %d\n", ret);
216
217 return ret;
218 }
219
220 static int
221 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
222 {
223 int ret;
224 u16 size;
225
226 brcmf_dbg(USB, "Enter\n");
227 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
228 || (devinfo->ctl_urb == NULL))
229 return -EINVAL;
230
231 size = len;
232 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
233 devinfo->ctl_urb->transfer_buffer_length = size;
234
235 devinfo->ctl_read.bRequestType = USB_DIR_IN
236 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
237 devinfo->ctl_read.bRequest = 1;
238
239 usb_fill_control_urb(devinfo->ctl_urb,
240 devinfo->usbdev,
241 devinfo->ctl_in_pipe,
242 (unsigned char *) &devinfo->ctl_read,
243 buf, size,
244 (usb_complete_t)brcmf_usb_ctlread_complete,
245 devinfo);
246
247 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
248 if (ret < 0)
249 brcmf_err("usb_submit_urb failed %d\n", ret);
250
251 return ret;
252 }
253
254 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
255 {
256 int err = 0;
257 int timeout = 0;
258 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
259
260 brcmf_dbg(USB, "Enter\n");
261 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
262 return -EIO;
263
264 if (test_and_set_bit(0, &devinfo->ctl_op))
265 return -EIO;
266
267 devinfo->ctl_completed = false;
268 err = brcmf_usb_send_ctl(devinfo, buf, len);
269 if (err) {
270 brcmf_err("fail %d bytes: %d\n", err, len);
271 clear_bit(0, &devinfo->ctl_op);
272 return err;
273 }
274 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
275 clear_bit(0, &devinfo->ctl_op);
276 if (!timeout) {
277 brcmf_err("Txctl wait timed out\n");
278 err = -EIO;
279 }
280 return err;
281 }
282
283 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
284 {
285 int err = 0;
286 int timeout = 0;
287 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
288
289 brcmf_dbg(USB, "Enter\n");
290 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
291 return -EIO;
292
293 if (test_and_set_bit(0, &devinfo->ctl_op))
294 return -EIO;
295
296 devinfo->ctl_completed = false;
297 err = brcmf_usb_recv_ctl(devinfo, buf, len);
298 if (err) {
299 brcmf_err("fail %d bytes: %d\n", err, len);
300 clear_bit(0, &devinfo->ctl_op);
301 return err;
302 }
303 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
304 err = devinfo->ctl_urb_status;
305 clear_bit(0, &devinfo->ctl_op);
306 if (!timeout) {
307 brcmf_err("rxctl wait timed out\n");
308 err = -EIO;
309 }
310 if (!err)
311 return devinfo->ctl_urb_actual_length;
312 else
313 return err;
314 }
315
316 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
317 struct list_head *q, int *counter)
318 {
319 unsigned long flags;
320 struct brcmf_usbreq *req;
321 spin_lock_irqsave(&devinfo->qlock, flags);
322 if (list_empty(q)) {
323 spin_unlock_irqrestore(&devinfo->qlock, flags);
324 return NULL;
325 }
326 req = list_entry(q->next, struct brcmf_usbreq, list);
327 list_del_init(q->next);
328 if (counter)
329 (*counter)--;
330 spin_unlock_irqrestore(&devinfo->qlock, flags);
331 return req;
332
333 }
334
335 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
336 struct list_head *q, struct brcmf_usbreq *req,
337 int *counter)
338 {
339 unsigned long flags;
340 spin_lock_irqsave(&devinfo->qlock, flags);
341 list_add_tail(&req->list, q);
342 if (counter)
343 (*counter)++;
344 spin_unlock_irqrestore(&devinfo->qlock, flags);
345 }
346
347 static struct brcmf_usbreq *
348 brcmf_usbdev_qinit(struct list_head *q, int qsize)
349 {
350 int i;
351 struct brcmf_usbreq *req, *reqs;
352
353 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC);
354 if (reqs == NULL)
355 return NULL;
356
357 req = reqs;
358
359 for (i = 0; i < qsize; i++) {
360 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
361 if (!req->urb)
362 goto fail;
363
364 INIT_LIST_HEAD(&req->list);
365 list_add_tail(&req->list, q);
366 req++;
367 }
368 return reqs;
369 fail:
370 brcmf_err("fail!\n");
371 while (!list_empty(q)) {
372 req = list_entry(q->next, struct brcmf_usbreq, list);
373 if (req && req->urb)
374 usb_free_urb(req->urb);
375 list_del(q->next);
376 }
377 return NULL;
378
379 }
380
381 static void brcmf_usb_free_q(struct list_head *q, bool pending)
382 {
383 struct brcmf_usbreq *req, *next;
384 int i = 0;
385 list_for_each_entry_safe(req, next, q, list) {
386 if (!req->urb) {
387 brcmf_err("bad req\n");
388 break;
389 }
390 i++;
391 if (pending) {
392 usb_kill_urb(req->urb);
393 } else {
394 usb_free_urb(req->urb);
395 list_del_init(&req->list);
396 }
397 }
398 }
399
400 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
401 struct brcmf_usbreq *req)
402 {
403 unsigned long flags;
404
405 spin_lock_irqsave(&devinfo->qlock, flags);
406 list_del_init(&req->list);
407 spin_unlock_irqrestore(&devinfo->qlock, flags);
408 }
409
410
411 static void brcmf_usb_tx_complete(struct urb *urb)
412 {
413 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
414 struct brcmf_usbdev_info *devinfo = req->devinfo;
415 unsigned long flags;
416
417 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
418 req->skb);
419 brcmf_usb_del_fromq(devinfo, req);
420
421 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0);
422 req->skb = NULL;
423 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount);
424 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
425 if (devinfo->tx_freecount > devinfo->tx_high_watermark &&
426 devinfo->tx_flowblock) {
427 brcmf_txflowblock(devinfo->dev, false);
428 devinfo->tx_flowblock = false;
429 }
430 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
431 }
432
433 static void brcmf_usb_rx_complete(struct urb *urb)
434 {
435 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
436 struct brcmf_usbdev_info *devinfo = req->devinfo;
437 struct sk_buff *skb;
438 struct sk_buff_head skbq;
439
440 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
441 brcmf_usb_del_fromq(devinfo, req);
442 skb = req->skb;
443 req->skb = NULL;
444
445 /* zero lenght packets indicate usb "failure". Do not refill */
446 if (urb->status != 0 || !urb->actual_length) {
447 brcmu_pkt_buf_free_skb(skb);
448 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
449 return;
450 }
451
452 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
453 skb_queue_head_init(&skbq);
454 skb_queue_tail(&skbq, skb);
455 skb_put(skb, urb->actual_length);
456 brcmf_rx_frames(devinfo->dev, &skbq);
457 brcmf_usb_rx_refill(devinfo, req);
458 } else {
459 brcmu_pkt_buf_free_skb(skb);
460 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
461 }
462 return;
463
464 }
465
466 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
467 struct brcmf_usbreq *req)
468 {
469 struct sk_buff *skb;
470 int ret;
471
472 if (!req || !devinfo)
473 return;
474
475 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
476 if (!skb) {
477 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
478 return;
479 }
480 req->skb = skb;
481
482 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
483 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
484 req);
485 req->devinfo = devinfo;
486 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL);
487
488 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
489 if (ret) {
490 brcmf_usb_del_fromq(devinfo, req);
491 brcmu_pkt_buf_free_skb(req->skb);
492 req->skb = NULL;
493 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
494 }
495 return;
496 }
497
498 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
499 {
500 struct brcmf_usbreq *req;
501
502 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
503 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state);
504 return;
505 }
506 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL)
507 brcmf_usb_rx_refill(devinfo, req);
508 }
509
510 static void
511 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
512 {
513 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
514 int old_state;
515
516 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
517 devinfo->bus_pub.state, state);
518
519 if (devinfo->bus_pub.state == state)
520 return;
521
522 old_state = devinfo->bus_pub.state;
523 devinfo->bus_pub.state = state;
524
525 /* update state of upper layer */
526 if (state == BRCMFMAC_USB_STATE_DOWN) {
527 brcmf_dbg(USB, "DBUS is down\n");
528 bcmf_bus->state = BRCMF_BUS_DOWN;
529 } else if (state == BRCMFMAC_USB_STATE_UP) {
530 brcmf_dbg(USB, "DBUS is up\n");
531 bcmf_bus->state = BRCMF_BUS_DATA;
532 } else {
533 brcmf_dbg(USB, "DBUS current state=%d\n", state);
534 }
535 }
536
537 static void
538 brcmf_usb_intr_complete(struct urb *urb)
539 {
540 struct brcmf_usbdev_info *devinfo =
541 (struct brcmf_usbdev_info *)urb->context;
542 int err;
543
544 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
545
546 if (devinfo == NULL)
547 return;
548
549 if (unlikely(urb->status)) {
550 if (urb->status == -ENOENT ||
551 urb->status == -ESHUTDOWN ||
552 urb->status == -ENODEV) {
553 brcmf_usb_state_change(devinfo,
554 BRCMFMAC_USB_STATE_DOWN);
555 }
556 }
557
558 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) {
559 brcmf_err("intr cb when DBUS down, ignoring\n");
560 return;
561 }
562
563 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
564 err = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
565 if (err)
566 brcmf_err("usb_submit_urb, err=%d\n", err);
567 }
568 }
569
570 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
571 {
572 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
573 struct brcmf_usbreq *req;
574 int ret;
575 unsigned long flags;
576
577 brcmf_dbg(USB, "Enter, skb=%p\n", skb);
578 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
579 ret = -EIO;
580 goto fail;
581 }
582
583 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
584 &devinfo->tx_freecount);
585 if (!req) {
586 brcmf_err("no req to send\n");
587 ret = -ENOMEM;
588 goto fail;
589 }
590
591 req->skb = skb;
592 req->devinfo = devinfo;
593 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
594 skb->data, skb->len, brcmf_usb_tx_complete, req);
595 req->urb->transfer_flags |= URB_ZERO_PACKET;
596 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
597 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
598 if (ret) {
599 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
600 brcmf_usb_del_fromq(devinfo, req);
601 req->skb = NULL;
602 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
603 &devinfo->tx_freecount);
604 goto fail;
605 }
606
607 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
608 if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
609 !devinfo->tx_flowblock) {
610 brcmf_txflowblock(dev, true);
611 devinfo->tx_flowblock = true;
612 }
613 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
614 return 0;
615
616 fail:
617 brcmf_txcomplete(dev, skb, false);
618 return ret;
619 }
620
621
622 static int brcmf_usb_up(struct device *dev)
623 {
624 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
625 u16 ifnum;
626 int ret;
627
628 brcmf_dbg(USB, "Enter\n");
629 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
630 return 0;
631
632 /* Success, indicate devinfo is fully up */
633 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
634
635 if (devinfo->intr_urb) {
636 usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
637 devinfo->intr_pipe,
638 &devinfo->intr,
639 devinfo->intr_size,
640 (usb_complete_t)brcmf_usb_intr_complete,
641 devinfo,
642 devinfo->interval);
643
644 ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
645 if (ret) {
646 brcmf_err("USB_SUBMIT_URB failed with status %d\n",
647 ret);
648 return -EINVAL;
649 }
650 }
651
652 if (devinfo->ctl_urb) {
653 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
654 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
655
656 ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
657
658 /* CTL Write */
659 devinfo->ctl_write.bRequestType =
660 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
661 devinfo->ctl_write.bRequest = 0;
662 devinfo->ctl_write.wValue = cpu_to_le16(0);
663 devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
664
665 /* CTL Read */
666 devinfo->ctl_read.bRequestType =
667 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
668 devinfo->ctl_read.bRequest = 1;
669 devinfo->ctl_read.wValue = cpu_to_le16(0);
670 devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
671 }
672 brcmf_usb_rx_fill_all(devinfo);
673 return 0;
674 }
675
676 static void brcmf_usb_down(struct device *dev)
677 {
678 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
679
680 brcmf_dbg(USB, "Enter\n");
681 if (devinfo == NULL)
682 return;
683
684 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
685 return;
686
687 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
688 if (devinfo->intr_urb)
689 usb_kill_urb(devinfo->intr_urb);
690
691 if (devinfo->ctl_urb)
692 usb_kill_urb(devinfo->ctl_urb);
693
694 if (devinfo->bulk_urb)
695 usb_kill_urb(devinfo->bulk_urb);
696 brcmf_usb_free_q(&devinfo->tx_postq, true);
697
698 brcmf_usb_free_q(&devinfo->rx_postq, true);
699 }
700
701 static void
702 brcmf_usb_sync_complete(struct urb *urb)
703 {
704 struct brcmf_usbdev_info *devinfo =
705 (struct brcmf_usbdev_info *)urb->context;
706
707 devinfo->ctl_completed = true;
708 brcmf_usb_ioctl_resp_wake(devinfo);
709 }
710
711 static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
712 void *buffer, int buflen)
713 {
714 int ret = 0;
715 char *tmpbuf;
716 u16 size;
717
718 if ((!devinfo) || (devinfo->ctl_urb == NULL))
719 return false;
720
721 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
722 if (!tmpbuf)
723 return false;
724
725 size = buflen;
726 devinfo->ctl_urb->transfer_buffer_length = size;
727
728 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
729 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
730 USB_RECIP_INTERFACE;
731 devinfo->ctl_read.bRequest = cmd;
732
733 usb_fill_control_urb(devinfo->ctl_urb,
734 devinfo->usbdev,
735 usb_rcvctrlpipe(devinfo->usbdev, 0),
736 (unsigned char *) &devinfo->ctl_read,
737 (void *) tmpbuf, size,
738 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
739
740 devinfo->ctl_completed = false;
741 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
742 if (ret < 0) {
743 brcmf_err("usb_submit_urb failed %d\n", ret);
744 kfree(tmpbuf);
745 return false;
746 }
747
748 ret = brcmf_usb_ioctl_resp_wait(devinfo);
749 memcpy(buffer, tmpbuf, buflen);
750 kfree(tmpbuf);
751
752 return ret;
753 }
754
755 static bool
756 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
757 {
758 struct bootrom_id_le id;
759 u32 chipid, chiprev;
760
761 brcmf_dbg(USB, "Enter\n");
762
763 if (devinfo == NULL)
764 return false;
765
766 /* Check if firmware downloaded already by querying runtime ID */
767 id.chip = cpu_to_le32(0xDEAD);
768 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
769
770 chipid = le32_to_cpu(id.chip);
771 chiprev = le32_to_cpu(id.chiprev);
772
773 if ((chipid & 0x4300) == 0x4300)
774 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
775 else
776 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
777 if (chipid == BRCMF_POSTBOOT_ID) {
778 brcmf_dbg(USB, "firmware already downloaded\n");
779 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
780 return false;
781 } else {
782 devinfo->bus_pub.devid = chipid;
783 devinfo->bus_pub.chiprev = chiprev;
784 }
785 return true;
786 }
787
788 static int
789 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
790 {
791 struct bootrom_id_le id;
792 u32 loop_cnt;
793
794 brcmf_dbg(USB, "Enter\n");
795
796 loop_cnt = 0;
797 do {
798 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
799 loop_cnt++;
800 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
801 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
802 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
803 break;
804 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT);
805
806 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
807 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n",
808 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
809
810 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
811 return 0;
812 } else {
813 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n",
814 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt);
815 return -EINVAL;
816 }
817 }
818
819
820 static int
821 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
822 {
823 int ret;
824
825 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
826 return -EINVAL;
827
828 /* Prepare the URB */
829 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
830 devinfo->tx_pipe, buffer, len,
831 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
832
833 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
834
835 devinfo->ctl_completed = false;
836 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
837 if (ret) {
838 brcmf_err("usb_submit_urb failed %d\n", ret);
839 return ret;
840 }
841 ret = brcmf_usb_ioctl_resp_wait(devinfo);
842 return (ret == 0);
843 }
844
845 static int
846 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
847 {
848 unsigned int sendlen, sent, dllen;
849 char *bulkchunk = NULL, *dlpos;
850 struct rdl_state_le state;
851 u32 rdlstate, rdlbytes;
852 int err = 0;
853
854 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen);
855
856 bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC);
857 if (bulkchunk == NULL) {
858 err = -ENOMEM;
859 goto fail;
860 }
861
862 /* 1) Prepare USB boot loader for runtime image */
863 brcmf_usb_dl_cmd(devinfo, DL_START, &state,
864 sizeof(struct rdl_state_le));
865
866 rdlstate = le32_to_cpu(state.state);
867 rdlbytes = le32_to_cpu(state.bytes);
868
869 /* 2) Check we are in the Waiting state */
870 if (rdlstate != DL_WAITING) {
871 brcmf_err("Failed to DL_START\n");
872 err = -EINVAL;
873 goto fail;
874 }
875 sent = 0;
876 dlpos = fw;
877 dllen = fwlen;
878
879 /* Get chip id and rev */
880 while (rdlbytes != dllen) {
881 /* Wait until the usb device reports it received all
882 * the bytes we sent */
883 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
884 if ((dllen-sent) < RDL_CHUNK)
885 sendlen = dllen-sent;
886 else
887 sendlen = RDL_CHUNK;
888
889 /* simply avoid having to send a ZLP by ensuring we
890 * never have an even
891 * multiple of 64
892 */
893 if (!(sendlen % 64))
894 sendlen -= 4;
895
896 /* send data */
897 memcpy(bulkchunk, dlpos, sendlen);
898 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
899 sendlen)) {
900 brcmf_err("send_bulk failed\n");
901 err = -EINVAL;
902 goto fail;
903 }
904
905 dlpos += sendlen;
906 sent += sendlen;
907 }
908 if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
909 sizeof(struct rdl_state_le))) {
910 brcmf_err("DL_GETSTATE Failed xxxx\n");
911 err = -EINVAL;
912 goto fail;
913 }
914
915 rdlstate = le32_to_cpu(state.state);
916 rdlbytes = le32_to_cpu(state.bytes);
917
918 /* restart if an error is reported */
919 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
920 brcmf_err("Bad Hdr or Bad CRC state %d\n",
921 rdlstate);
922 err = -EINVAL;
923 goto fail;
924 }
925 }
926
927 fail:
928 kfree(bulkchunk);
929 brcmf_dbg(USB, "Exit, err=%d\n", err);
930 return err;
931 }
932
933 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
934 {
935 int err;
936
937 brcmf_dbg(USB, "Enter\n");
938
939 if (devinfo == NULL)
940 return -EINVAL;
941
942 if (devinfo->bus_pub.devid == 0xDEAD)
943 return -EINVAL;
944
945 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
946 if (err == 0)
947 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
948 else
949 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
950 brcmf_dbg(USB, "Exit, err=%d\n", err);
951
952 return err;
953 }
954
955 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
956 {
957 struct rdl_state_le state;
958
959 brcmf_dbg(USB, "Enter\n");
960 if (!devinfo)
961 return -EINVAL;
962
963 if (devinfo->bus_pub.devid == 0xDEAD)
964 return -EINVAL;
965
966 /* Check we are runnable */
967 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
968 sizeof(struct rdl_state_le));
969
970 /* Start the image */
971 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
972 if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state,
973 sizeof(struct rdl_state_le)))
974 return -ENODEV;
975 if (brcmf_usb_resetcfg(devinfo))
976 return -ENODEV;
977 /* The Dongle may go for re-enumeration. */
978 } else {
979 brcmf_err("Dongle not runnable\n");
980 return -EINVAL;
981 }
982 brcmf_dbg(USB, "Exit\n");
983 return 0;
984 }
985
986 static bool brcmf_usb_chip_support(int chipid, int chiprev)
987 {
988 switch(chipid) {
989 case 43143:
990 return true;
991 case 43235:
992 case 43236:
993 case 43238:
994 return (chiprev == 3);
995 case 43242:
996 return true;
997 default:
998 break;
999 }
1000 return false;
1001 }
1002
1003 static int
1004 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1005 {
1006 int devid, chiprev;
1007 int err;
1008
1009 brcmf_dbg(USB, "Enter\n");
1010 if (devinfo == NULL)
1011 return -ENODEV;
1012
1013 devid = devinfo->bus_pub.devid;
1014 chiprev = devinfo->bus_pub.chiprev;
1015
1016 if (!brcmf_usb_chip_support(devid, chiprev)) {
1017 brcmf_err("unsupported chip %d rev %d\n",
1018 devid, chiprev);
1019 return -EINVAL;
1020 }
1021
1022 if (!devinfo->image) {
1023 brcmf_err("No firmware!\n");
1024 return -ENOENT;
1025 }
1026
1027 err = brcmf_usb_dlstart(devinfo,
1028 devinfo->image, devinfo->image_len);
1029 if (err == 0)
1030 err = brcmf_usb_dlrun(devinfo);
1031 return err;
1032 }
1033
1034
1035 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1036 {
1037 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1038
1039 /* free the URBS */
1040 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1041 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1042
1043 usb_free_urb(devinfo->intr_urb);
1044 usb_free_urb(devinfo->ctl_urb);
1045 usb_free_urb(devinfo->bulk_urb);
1046
1047 kfree(devinfo->tx_reqs);
1048 kfree(devinfo->rx_reqs);
1049 }
1050
1051 #define TRX_MAGIC 0x30524448 /* "HDR0" */
1052 #define TRX_VERSION 1 /* Version 1 */
1053 #define TRX_MAX_LEN 0x3B0000 /* Max length */
1054 #define TRX_NO_HEADER 1 /* Do not write TRX header */
1055 #define TRX_MAX_OFFSET 3 /* Max number of individual files */
1056 #define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */
1057
1058 struct trx_header_le {
1059 __le32 magic; /* "HDR0" */
1060 __le32 len; /* Length of file including header */
1061 __le32 crc32; /* CRC from flag_version to end of file */
1062 __le32 flag_version; /* 0:15 flags, 16:31 version */
1063 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
1064 * header */
1065 };
1066
1067 static int check_file(const u8 *headers)
1068 {
1069 struct trx_header_le *trx;
1070 int actual_len = -1;
1071
1072 brcmf_dbg(USB, "Enter\n");
1073 /* Extract trx header */
1074 trx = (struct trx_header_le *) headers;
1075 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1076 return -1;
1077
1078 headers += sizeof(struct trx_header_le);
1079
1080 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1081 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1082 return actual_len + sizeof(struct trx_header_le);
1083 }
1084 return -1;
1085 }
1086
1087 static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo)
1088 {
1089 s8 *fwname;
1090 const struct firmware *fw;
1091 struct brcmf_usb_image *fw_image;
1092 int err;
1093
1094 brcmf_dbg(USB, "Enter\n");
1095 switch (devinfo->bus_pub.devid) {
1096 case 43143:
1097 fwname = BRCMF_USB_43143_FW_NAME;
1098 break;
1099 case 43235:
1100 case 43236:
1101 case 43238:
1102 fwname = BRCMF_USB_43236_FW_NAME;
1103 break;
1104 case 43242:
1105 fwname = BRCMF_USB_43242_FW_NAME;
1106 break;
1107 default:
1108 return -EINVAL;
1109 break;
1110 }
1111 brcmf_dbg(USB, "Loading FW %s\n", fwname);
1112 list_for_each_entry(fw_image, &fw_image_list, list) {
1113 if (fw_image->fwname == fwname) {
1114 devinfo->image = fw_image->image;
1115 devinfo->image_len = fw_image->image_len;
1116 return 0;
1117 }
1118 }
1119 /* fw image not yet loaded. Load it now and add to list */
1120 err = request_firmware(&fw, fwname, devinfo->dev);
1121 if (!fw) {
1122 brcmf_err("fail to request firmware %s\n", fwname);
1123 return err;
1124 }
1125 if (check_file(fw->data) < 0) {
1126 brcmf_err("invalid firmware %s\n", fwname);
1127 return -EINVAL;
1128 }
1129
1130 fw_image = kzalloc(sizeof(*fw_image), GFP_ATOMIC);
1131 if (!fw_image)
1132 return -ENOMEM;
1133 INIT_LIST_HEAD(&fw_image->list);
1134 list_add_tail(&fw_image->list, &fw_image_list);
1135 fw_image->fwname = fwname;
1136 fw_image->image = vmalloc(fw->size);
1137 if (!fw_image->image)
1138 return -ENOMEM;
1139
1140 memcpy(fw_image->image, fw->data, fw->size);
1141 fw_image->image_len = fw->size;
1142
1143 release_firmware(fw);
1144
1145 devinfo->image = fw_image->image;
1146 devinfo->image_len = fw_image->image_len;
1147
1148 return 0;
1149 }
1150
1151
1152 static
1153 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1154 int nrxq, int ntxq)
1155 {
1156 brcmf_dbg(USB, "Enter\n");
1157
1158 devinfo->bus_pub.nrxq = nrxq;
1159 devinfo->rx_low_watermark = nrxq / 2;
1160 devinfo->bus_pub.devinfo = devinfo;
1161 devinfo->bus_pub.ntxq = ntxq;
1162 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1163
1164 /* flow control when too many tx urbs posted */
1165 devinfo->tx_low_watermark = ntxq / 4;
1166 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1167 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1168
1169 /* Initialize other structure content */
1170 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1171
1172 /* Initialize the spinlocks */
1173 spin_lock_init(&devinfo->qlock);
1174 spin_lock_init(&devinfo->tx_flowblock_lock);
1175
1176 INIT_LIST_HEAD(&devinfo->rx_freeq);
1177 INIT_LIST_HEAD(&devinfo->rx_postq);
1178
1179 INIT_LIST_HEAD(&devinfo->tx_freeq);
1180 INIT_LIST_HEAD(&devinfo->tx_postq);
1181
1182 devinfo->tx_flowblock = false;
1183
1184 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1185 if (!devinfo->rx_reqs)
1186 goto error;
1187
1188 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1189 if (!devinfo->tx_reqs)
1190 goto error;
1191 devinfo->tx_freecount = ntxq;
1192
1193 devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC);
1194 if (!devinfo->intr_urb) {
1195 brcmf_err("usb_alloc_urb (intr) failed\n");
1196 goto error;
1197 }
1198 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1199 if (!devinfo->ctl_urb) {
1200 brcmf_err("usb_alloc_urb (ctl) failed\n");
1201 goto error;
1202 }
1203 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1204 if (!devinfo->bulk_urb) {
1205 brcmf_err("usb_alloc_urb (bulk) failed\n");
1206 goto error;
1207 }
1208
1209 if (!brcmf_usb_dlneeded(devinfo))
1210 return &devinfo->bus_pub;
1211
1212 brcmf_dbg(USB, "Start fw downloading\n");
1213 if (brcmf_usb_get_fw(devinfo))
1214 goto error;
1215
1216 if (brcmf_usb_fw_download(devinfo))
1217 goto error;
1218
1219 return &devinfo->bus_pub;
1220
1221 error:
1222 brcmf_err("failed!\n");
1223 brcmf_usb_detach(devinfo);
1224 return NULL;
1225 }
1226
1227 static struct brcmf_bus_ops brcmf_usb_bus_ops = {
1228 .txdata = brcmf_usb_tx,
1229 .init = brcmf_usb_up,
1230 .stop = brcmf_usb_down,
1231 .txctl = brcmf_usb_tx_ctlpkt,
1232 .rxctl = brcmf_usb_rx_ctlpkt,
1233 };
1234
1235 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1236 {
1237 struct brcmf_bus *bus = NULL;
1238 struct brcmf_usbdev *bus_pub = NULL;
1239 int ret;
1240 struct device *dev = devinfo->dev;
1241
1242 brcmf_dbg(USB, "Enter\n");
1243 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1244 if (!bus_pub)
1245 return -ENODEV;
1246
1247 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1248 if (!bus) {
1249 ret = -ENOMEM;
1250 goto fail;
1251 }
1252
1253 bus->dev = dev;
1254 bus_pub->bus = bus;
1255 bus->bus_priv.usb = bus_pub;
1256 dev_set_drvdata(dev, bus);
1257 bus->ops = &brcmf_usb_bus_ops;
1258 bus->chip = bus_pub->devid;
1259 bus->chiprev = bus_pub->chiprev;
1260
1261 /* Attach to the common driver interface */
1262 ret = brcmf_attach(0, dev);
1263 if (ret) {
1264 brcmf_err("brcmf_attach failed\n");
1265 goto fail;
1266 }
1267
1268 ret = brcmf_bus_start(dev);
1269 if (ret) {
1270 brcmf_err("dongle is not responding\n");
1271 brcmf_detach(dev);
1272 goto fail;
1273 }
1274
1275 return 0;
1276 fail:
1277 /* Release resources in reverse order */
1278 kfree(bus);
1279 brcmf_usb_detach(devinfo);
1280 return ret;
1281 }
1282
1283 static void
1284 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo)
1285 {
1286 if (!devinfo)
1287 return;
1288 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
1289
1290 brcmf_detach(devinfo->dev);
1291 kfree(devinfo->bus_pub.bus);
1292 brcmf_usb_detach(devinfo);
1293 }
1294
1295 static int
1296 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1297 {
1298 int ep;
1299 struct usb_endpoint_descriptor *endpoint;
1300 int ret = 0;
1301 struct usb_device *usb = interface_to_usbdev(intf);
1302 int num_of_eps;
1303 u8 endpoint_num;
1304 struct brcmf_usbdev_info *devinfo;
1305
1306 brcmf_dbg(USB, "Enter\n");
1307
1308 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC);
1309 if (devinfo == NULL)
1310 return -ENOMEM;
1311
1312 devinfo->usbdev = usb;
1313 devinfo->dev = &usb->dev;
1314
1315 usb_set_intfdata(intf, devinfo);
1316
1317 /* Check that the device supports only one configuration */
1318 if (usb->descriptor.bNumConfigurations != 1) {
1319 ret = -1;
1320 goto fail;
1321 }
1322
1323 if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
1324 ret = -1;
1325 goto fail;
1326 }
1327
1328 /*
1329 * Only the BDC interface configuration is supported:
1330 * Device class: USB_CLASS_VENDOR_SPEC
1331 * if0 class: USB_CLASS_VENDOR_SPEC
1332 * if0/ep0: control
1333 * if0/ep1: bulk in
1334 * if0/ep2: bulk out (ok if swapped with bulk in)
1335 */
1336 if (CONFIGDESC(usb)->bNumInterfaces != 1) {
1337 ret = -1;
1338 goto fail;
1339 }
1340
1341 /* Check interface */
1342 if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
1343 IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 ||
1344 IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) {
1345 brcmf_err("invalid control interface: class %d, subclass %d, proto %d\n",
1346 IFDESC(usb, CONTROL_IF).bInterfaceClass,
1347 IFDESC(usb, CONTROL_IF).bInterfaceSubClass,
1348 IFDESC(usb, CONTROL_IF).bInterfaceProtocol);
1349 ret = -1;
1350 goto fail;
1351 }
1352
1353 /* Check control endpoint */
1354 endpoint = &IFEPDESC(usb, CONTROL_IF, 0);
1355 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1356 != USB_ENDPOINT_XFER_INT) {
1357 brcmf_err("invalid control endpoint %d\n",
1358 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
1359 ret = -1;
1360 goto fail;
1361 }
1362
1363 endpoint_num = endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1364 devinfo->intr_pipe = usb_rcvintpipe(usb, endpoint_num);
1365
1366 devinfo->rx_pipe = 0;
1367 devinfo->rx_pipe2 = 0;
1368 devinfo->tx_pipe = 0;
1369 num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1;
1370
1371 /* Check data endpoints and get pipes */
1372 for (ep = 1; ep <= num_of_eps; ep++) {
1373 endpoint = &IFEPDESC(usb, BULK_IF, ep);
1374 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1375 USB_ENDPOINT_XFER_BULK) {
1376 brcmf_err("invalid data endpoint %d\n", ep);
1377 ret = -1;
1378 goto fail;
1379 }
1380
1381 endpoint_num = endpoint->bEndpointAddress &
1382 USB_ENDPOINT_NUMBER_MASK;
1383 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1384 == USB_DIR_IN) {
1385 if (!devinfo->rx_pipe) {
1386 devinfo->rx_pipe =
1387 usb_rcvbulkpipe(usb, endpoint_num);
1388 } else {
1389 devinfo->rx_pipe2 =
1390 usb_rcvbulkpipe(usb, endpoint_num);
1391 }
1392 } else {
1393 devinfo->tx_pipe = usb_sndbulkpipe(usb, endpoint_num);
1394 }
1395 }
1396
1397 /* Allocate interrupt URB and data buffer */
1398 /* RNDIS says 8-byte intr, our old drivers used 4-byte */
1399 if (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == cpu_to_le16(16))
1400 devinfo->intr_size = 8;
1401 else
1402 devinfo->intr_size = 4;
1403
1404 devinfo->interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval;
1405
1406 if (usb->speed == USB_SPEED_HIGH)
1407 brcmf_dbg(USB, "Broadcom high speed USB wireless device detected\n");
1408 else
1409 brcmf_dbg(USB, "Broadcom full speed USB wireless device detected\n");
1410
1411 ret = brcmf_usb_probe_cb(devinfo);
1412 if (ret)
1413 goto fail;
1414
1415 /* Success */
1416 return 0;
1417
1418 fail:
1419 brcmf_err("failed with errno %d\n", ret);
1420 kfree(devinfo);
1421 usb_set_intfdata(intf, NULL);
1422 return ret;
1423
1424 }
1425
1426 static void
1427 brcmf_usb_disconnect(struct usb_interface *intf)
1428 {
1429 struct brcmf_usbdev_info *devinfo;
1430
1431 brcmf_dbg(USB, "Enter\n");
1432 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf);
1433 brcmf_usb_disconnect_cb(devinfo);
1434 kfree(devinfo);
1435 brcmf_dbg(USB, "Exit\n");
1436 }
1437
1438 /*
1439 * only need to signal the bus being down and update the state.
1440 */
1441 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1442 {
1443 struct usb_device *usb = interface_to_usbdev(intf);
1444 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1445
1446 brcmf_dbg(USB, "Enter\n");
1447 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
1448 brcmf_detach(&usb->dev);
1449 return 0;
1450 }
1451
1452 /*
1453 * (re-) start the bus.
1454 */
1455 static int brcmf_usb_resume(struct usb_interface *intf)
1456 {
1457 struct usb_device *usb = interface_to_usbdev(intf);
1458 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1459
1460 brcmf_dbg(USB, "Enter\n");
1461 if (!brcmf_attach(0, devinfo->dev))
1462 return brcmf_bus_start(&usb->dev);
1463
1464 return 0;
1465 }
1466
1467 static int brcmf_usb_reset_resume(struct usb_interface *intf)
1468 {
1469 struct usb_device *usb = interface_to_usbdev(intf);
1470 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1471
1472 brcmf_dbg(USB, "Enter\n");
1473
1474 if (!brcmf_usb_fw_download(devinfo))
1475 return brcmf_usb_resume(intf);
1476
1477 return -EIO;
1478 }
1479
1480 #define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c
1481 #define BRCMF_USB_DEVICE_ID_43143 0xbd1e
1482 #define BRCMF_USB_DEVICE_ID_43236 0xbd17
1483 #define BRCMF_USB_DEVICE_ID_43242 0xbd1f
1484 #define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc
1485
1486 static struct usb_device_id brcmf_usb_devid_table[] = {
1487 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43143) },
1488 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) },
1489 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43242) },
1490 /* special entry for device with firmware loaded and running */
1491 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) },
1492 { }
1493 };
1494
1495 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1496 MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME);
1497 MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME);
1498 MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME);
1499
1500 static struct usb_driver brcmf_usbdrvr = {
1501 .name = KBUILD_MODNAME,
1502 .probe = brcmf_usb_probe,
1503 .disconnect = brcmf_usb_disconnect,
1504 .id_table = brcmf_usb_devid_table,
1505 .suspend = brcmf_usb_suspend,
1506 .resume = brcmf_usb_resume,
1507 .reset_resume = brcmf_usb_reset_resume,
1508 .supports_autosuspend = 1,
1509 .disable_hub_initiated_lpm = 1,
1510 };
1511
1512 static void brcmf_release_fw(struct list_head *q)
1513 {
1514 struct brcmf_usb_image *fw_image, *next;
1515
1516 list_for_each_entry_safe(fw_image, next, q, list) {
1517 vfree(fw_image->image);
1518 list_del_init(&fw_image->list);
1519 }
1520 }
1521
1522 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1523 {
1524 /* device past is the usb interface so we
1525 * need to use parent here.
1526 */
1527 brcmf_dev_reset(dev->parent);
1528 return 0;
1529 }
1530
1531 void brcmf_usb_exit(void)
1532 {
1533 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1534 int ret;
1535
1536 brcmf_dbg(USB, "Enter\n");
1537 ret = driver_for_each_device(drv, NULL, NULL,
1538 brcmf_usb_reset_device);
1539 usb_deregister(&brcmf_usbdrvr);
1540 brcmf_release_fw(&fw_image_list);
1541 }
1542
1543 void brcmf_usb_init(void)
1544 {
1545 brcmf_dbg(USB, "Enter\n");
1546 INIT_LIST_HEAD(&fw_image_list);
1547 usb_register(&brcmf_usbdrvr);
1548 }
Linux kernel - Deliverables
This page took 0.087143 seconds and 5 git commands to generate.