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x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / net / wireless / brcm80211 / brcmfmac / usb.c
blobf4aea47e0730996ec059f02dbc1f2edaf98c04d1
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 return ret;
618 }
619
620
621 static int brcmf_usb_up(struct device *dev)
622 {
623 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
624 u16 ifnum;
625 int ret;
626
627 brcmf_dbg(USB, "Enter\n");
628 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
629 return 0;
630
631 /* Success, indicate devinfo is fully up */
632 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
633
634 if (devinfo->intr_urb) {
635 usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
636 devinfo->intr_pipe,
637 &devinfo->intr,
638 devinfo->intr_size,
639 (usb_complete_t)brcmf_usb_intr_complete,
640 devinfo,
641 devinfo->interval);
642
643 ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
644 if (ret) {
645 brcmf_err("USB_SUBMIT_URB failed with status %d\n",
646 ret);
647 return -EINVAL;
648 }
649 }
650
651 if (devinfo->ctl_urb) {
652 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
653 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
654
655 ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
656
657 /* CTL Write */
658 devinfo->ctl_write.bRequestType =
659 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
660 devinfo->ctl_write.bRequest = 0;
661 devinfo->ctl_write.wValue = cpu_to_le16(0);
662 devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
663
664 /* CTL Read */
665 devinfo->ctl_read.bRequestType =
666 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
667 devinfo->ctl_read.bRequest = 1;
668 devinfo->ctl_read.wValue = cpu_to_le16(0);
669 devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
670 }
671 brcmf_usb_rx_fill_all(devinfo);
672 return 0;
673 }
674
675 static void brcmf_usb_down(struct device *dev)
676 {
677 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
678
679 brcmf_dbg(USB, "Enter\n");
680 if (devinfo == NULL)
681 return;
682
683 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
684 return;
685
686 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
687 if (devinfo->intr_urb)
688 usb_kill_urb(devinfo->intr_urb);
689
690 if (devinfo->ctl_urb)
691 usb_kill_urb(devinfo->ctl_urb);
692
693 if (devinfo->bulk_urb)
694 usb_kill_urb(devinfo->bulk_urb);
695 brcmf_usb_free_q(&devinfo->tx_postq, true);
696
697 brcmf_usb_free_q(&devinfo->rx_postq, true);
698 }
699
700 static void
701 brcmf_usb_sync_complete(struct urb *urb)
702 {
703 struct brcmf_usbdev_info *devinfo =
704 (struct brcmf_usbdev_info *)urb->context;
705
706 devinfo->ctl_completed = true;
707 brcmf_usb_ioctl_resp_wake(devinfo);
708 }
709
710 static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
711 void *buffer, int buflen)
712 {
713 int ret = 0;
714 char *tmpbuf;
715 u16 size;
716
717 if ((!devinfo) || (devinfo->ctl_urb == NULL))
718 return false;
719
720 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
721 if (!tmpbuf)
722 return false;
723
724 size = buflen;
725 devinfo->ctl_urb->transfer_buffer_length = size;
726
727 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
728 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
729 USB_RECIP_INTERFACE;
730 devinfo->ctl_read.bRequest = cmd;
731
732 usb_fill_control_urb(devinfo->ctl_urb,
733 devinfo->usbdev,
734 usb_rcvctrlpipe(devinfo->usbdev, 0),
735 (unsigned char *) &devinfo->ctl_read,
736 (void *) tmpbuf, size,
737 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
738
739 devinfo->ctl_completed = false;
740 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
741 if (ret < 0) {
742 brcmf_err("usb_submit_urb failed %d\n", ret);
743 kfree(tmpbuf);
744 return false;
745 }
746
747 ret = brcmf_usb_ioctl_resp_wait(devinfo);
748 memcpy(buffer, tmpbuf, buflen);
749 kfree(tmpbuf);
750
751 return ret;
752 }
753
754 static bool
755 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
756 {
757 struct bootrom_id_le id;
758 u32 chipid, chiprev;
759
760 brcmf_dbg(USB, "Enter\n");
761
762 if (devinfo == NULL)
763 return false;
764
765 /* Check if firmware downloaded already by querying runtime ID */
766 id.chip = cpu_to_le32(0xDEAD);
767 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
768
769 chipid = le32_to_cpu(id.chip);
770 chiprev = le32_to_cpu(id.chiprev);
771
772 if ((chipid & 0x4300) == 0x4300)
773 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
774 else
775 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
776 if (chipid == BRCMF_POSTBOOT_ID) {
777 brcmf_dbg(USB, "firmware already downloaded\n");
778 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
779 return false;
780 } else {
781 devinfo->bus_pub.devid = chipid;
782 devinfo->bus_pub.chiprev = chiprev;
783 }
784 return true;
785 }
786
787 static int
788 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
789 {
790 struct bootrom_id_le id;
791 u32 loop_cnt;
792
793 brcmf_dbg(USB, "Enter\n");
794
795 loop_cnt = 0;
796 do {
797 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
798 loop_cnt++;
799 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
800 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
801 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
802 break;
803 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT);
804
805 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
806 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n",
807 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
808
809 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
810 return 0;
811 } else {
812 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n",
813 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt);
814 return -EINVAL;
815 }
816 }
817
818
819 static int
820 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
821 {
822 int ret;
823
824 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
825 return -EINVAL;
826
827 /* Prepare the URB */
828 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
829 devinfo->tx_pipe, buffer, len,
830 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
831
832 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
833
834 devinfo->ctl_completed = false;
835 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
836 if (ret) {
837 brcmf_err("usb_submit_urb failed %d\n", ret);
838 return ret;
839 }
840 ret = brcmf_usb_ioctl_resp_wait(devinfo);
841 return (ret == 0);
842 }
843
844 static int
845 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
846 {
847 unsigned int sendlen, sent, dllen;
848 char *bulkchunk = NULL, *dlpos;
849 struct rdl_state_le state;
850 u32 rdlstate, rdlbytes;
851 int err = 0;
852
853 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen);
854
855 bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC);
856 if (bulkchunk == NULL) {
857 err = -ENOMEM;
858 goto fail;
859 }
860
861 /* 1) Prepare USB boot loader for runtime image */
862 brcmf_usb_dl_cmd(devinfo, DL_START, &state,
863 sizeof(struct rdl_state_le));
864
865 rdlstate = le32_to_cpu(state.state);
866 rdlbytes = le32_to_cpu(state.bytes);
867
868 /* 2) Check we are in the Waiting state */
869 if (rdlstate != DL_WAITING) {
870 brcmf_err("Failed to DL_START\n");
871 err = -EINVAL;
872 goto fail;
873 }
874 sent = 0;
875 dlpos = fw;
876 dllen = fwlen;
877
878 /* Get chip id and rev */
879 while (rdlbytes != dllen) {
880 /* Wait until the usb device reports it received all
881 * the bytes we sent */
882 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
883 if ((dllen-sent) < RDL_CHUNK)
884 sendlen = dllen-sent;
885 else
886 sendlen = RDL_CHUNK;
887
888 /* simply avoid having to send a ZLP by ensuring we
889 * never have an even
890 * multiple of 64
891 */
892 if (!(sendlen % 64))
893 sendlen -= 4;
894
895 /* send data */
896 memcpy(bulkchunk, dlpos, sendlen);
897 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
898 sendlen)) {
899 brcmf_err("send_bulk failed\n");
900 err = -EINVAL;
901 goto fail;
902 }
903
904 dlpos += sendlen;
905 sent += sendlen;
906 }
907 if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
908 sizeof(struct rdl_state_le))) {
909 brcmf_err("DL_GETSTATE Failed xxxx\n");
910 err = -EINVAL;
911 goto fail;
912 }
913
914 rdlstate = le32_to_cpu(state.state);
915 rdlbytes = le32_to_cpu(state.bytes);
916
917 /* restart if an error is reported */
918 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
919 brcmf_err("Bad Hdr or Bad CRC state %d\n",
920 rdlstate);
921 err = -EINVAL;
922 goto fail;
923 }
924 }
925
926 fail:
927 kfree(bulkchunk);
928 brcmf_dbg(USB, "Exit, err=%d\n", err);
929 return err;
930 }
931
932 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
933 {
934 int err;
935
936 brcmf_dbg(USB, "Enter\n");
937
938 if (devinfo == NULL)
939 return -EINVAL;
940
941 if (devinfo->bus_pub.devid == 0xDEAD)
942 return -EINVAL;
943
944 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
945 if (err == 0)
946 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
947 else
948 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
949 brcmf_dbg(USB, "Exit, err=%d\n", err);
950
951 return err;
952 }
953
954 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
955 {
956 struct rdl_state_le state;
957
958 brcmf_dbg(USB, "Enter\n");
959 if (!devinfo)
960 return -EINVAL;
961
962 if (devinfo->bus_pub.devid == 0xDEAD)
963 return -EINVAL;
964
965 /* Check we are runnable */
966 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
967 sizeof(struct rdl_state_le));
968
969 /* Start the image */
970 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
971 if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state,
972 sizeof(struct rdl_state_le)))
973 return -ENODEV;
974 if (brcmf_usb_resetcfg(devinfo))
975 return -ENODEV;
976 /* The Dongle may go for re-enumeration. */
977 } else {
978 brcmf_err("Dongle not runnable\n");
979 return -EINVAL;
980 }
981 brcmf_dbg(USB, "Exit\n");
982 return 0;
983 }
984
985 static bool brcmf_usb_chip_support(int chipid, int chiprev)
986 {
987 switch(chipid) {
988 case 43143:
989 return true;
990 case 43235:
991 case 43236:
992 case 43238:
993 return (chiprev == 3);
994 case 43242:
995 return true;
996 default:
997 break;
998 }
999 return false;
1000 }
1001
1002 static int
1003 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1004 {
1005 int devid, chiprev;
1006 int err;
1007
1008 brcmf_dbg(USB, "Enter\n");
1009 if (devinfo == NULL)
1010 return -ENODEV;
1011
1012 devid = devinfo->bus_pub.devid;
1013 chiprev = devinfo->bus_pub.chiprev;
1014
1015 if (!brcmf_usb_chip_support(devid, chiprev)) {
1016 brcmf_err("unsupported chip %d rev %d\n",
1017 devid, chiprev);
1018 return -EINVAL;
1019 }
1020
1021 if (!devinfo->image) {
1022 brcmf_err("No firmware!\n");
1023 return -ENOENT;
1024 }
1025
1026 err = brcmf_usb_dlstart(devinfo,
1027 devinfo->image, devinfo->image_len);
1028 if (err == 0)
1029 err = brcmf_usb_dlrun(devinfo);
1030 return err;
1031 }
1032
1033
1034 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1035 {
1036 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1037
1038 /* free the URBS */
1039 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1040 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1041
1042 usb_free_urb(devinfo->intr_urb);
1043 usb_free_urb(devinfo->ctl_urb);
1044 usb_free_urb(devinfo->bulk_urb);
1045
1046 kfree(devinfo->tx_reqs);
1047 kfree(devinfo->rx_reqs);
1048 }
1049
1050 #define TRX_MAGIC 0x30524448 /* "HDR0" */
1051 #define TRX_VERSION 1 /* Version 1 */
1052 #define TRX_MAX_LEN 0x3B0000 /* Max length */
1053 #define TRX_NO_HEADER 1 /* Do not write TRX header */
1054 #define TRX_MAX_OFFSET 3 /* Max number of individual files */
1055 #define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */
1056
1057 struct trx_header_le {
1058 __le32 magic; /* "HDR0" */
1059 __le32 len; /* Length of file including header */
1060 __le32 crc32; /* CRC from flag_version to end of file */
1061 __le32 flag_version; /* 0:15 flags, 16:31 version */
1062 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
1063 * header */
1064 };
1065
1066 static int check_file(const u8 *headers)
1067 {
1068 struct trx_header_le *trx;
1069 int actual_len = -1;
1070
1071 brcmf_dbg(USB, "Enter\n");
1072 /* Extract trx header */
1073 trx = (struct trx_header_le *) headers;
1074 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1075 return -1;
1076
1077 headers += sizeof(struct trx_header_le);
1078
1079 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1080 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1081 return actual_len + sizeof(struct trx_header_le);
1082 }
1083 return -1;
1084 }
1085
1086 static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo)
1087 {
1088 s8 *fwname;
1089 const struct firmware *fw;
1090 struct brcmf_usb_image *fw_image;
1091 int err;
1092
1093 brcmf_dbg(USB, "Enter\n");
1094 switch (devinfo->bus_pub.devid) {
1095 case 43143:
1096 fwname = BRCMF_USB_43143_FW_NAME;
1097 break;
1098 case 43235:
1099 case 43236:
1100 case 43238:
1101 fwname = BRCMF_USB_43236_FW_NAME;
1102 break;
1103 case 43242:
1104 fwname = BRCMF_USB_43242_FW_NAME;
1105 break;
1106 default:
1107 return -EINVAL;
1108 break;
1109 }
1110 brcmf_dbg(USB, "Loading FW %s\n", fwname);
1111 list_for_each_entry(fw_image, &fw_image_list, list) {
1112 if (fw_image->fwname == fwname) {
1113 devinfo->image = fw_image->image;
1114 devinfo->image_len = fw_image->image_len;
1115 return 0;
1116 }
1117 }
1118 /* fw image not yet loaded. Load it now and add to list */
1119 err = request_firmware(&fw, fwname, devinfo->dev);
1120 if (!fw) {
1121 brcmf_err("fail to request firmware %s\n", fwname);
1122 return err;
1123 }
1124 if (check_file(fw->data) < 0) {
1125 brcmf_err("invalid firmware %s\n", fwname);
1126 return -EINVAL;
1127 }
1128
1129 fw_image = kzalloc(sizeof(*fw_image), GFP_ATOMIC);
1130 if (!fw_image)
1131 return -ENOMEM;
1132 INIT_LIST_HEAD(&fw_image->list);
1133 list_add_tail(&fw_image->list, &fw_image_list);
1134 fw_image->fwname = fwname;
1135 fw_image->image = vmalloc(fw->size);
1136 if (!fw_image->image)
1137 return -ENOMEM;
1138
1139 memcpy(fw_image->image, fw->data, fw->size);
1140 fw_image->image_len = fw->size;
1141
1142 release_firmware(fw);
1143
1144 devinfo->image = fw_image->image;
1145 devinfo->image_len = fw_image->image_len;
1146
1147 return 0;
1148 }
1149
1150
1151 static
1152 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1153 int nrxq, int ntxq)
1154 {
1155 brcmf_dbg(USB, "Enter\n");
1156
1157 devinfo->bus_pub.nrxq = nrxq;
1158 devinfo->rx_low_watermark = nrxq / 2;
1159 devinfo->bus_pub.devinfo = devinfo;
1160 devinfo->bus_pub.ntxq = ntxq;
1161 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1162
1163 /* flow control when too many tx urbs posted */
1164 devinfo->tx_low_watermark = ntxq / 4;
1165 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1166 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1167
1168 /* Initialize other structure content */
1169 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1170
1171 /* Initialize the spinlocks */
1172 spin_lock_init(&devinfo->qlock);
1173 spin_lock_init(&devinfo->tx_flowblock_lock);
1174
1175 INIT_LIST_HEAD(&devinfo->rx_freeq);
1176 INIT_LIST_HEAD(&devinfo->rx_postq);
1177
1178 INIT_LIST_HEAD(&devinfo->tx_freeq);
1179 INIT_LIST_HEAD(&devinfo->tx_postq);
1180
1181 devinfo->tx_flowblock = false;
1182
1183 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1184 if (!devinfo->rx_reqs)
1185 goto error;
1186
1187 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1188 if (!devinfo->tx_reqs)
1189 goto error;
1190 devinfo->tx_freecount = ntxq;
1191
1192 devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC);
1193 if (!devinfo->intr_urb) {
1194 brcmf_err("usb_alloc_urb (intr) failed\n");
1195 goto error;
1196 }
1197 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1198 if (!devinfo->ctl_urb) {
1199 brcmf_err("usb_alloc_urb (ctl) failed\n");
1200 goto error;
1201 }
1202 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1203 if (!devinfo->bulk_urb) {
1204 brcmf_err("usb_alloc_urb (bulk) failed\n");
1205 goto error;
1206 }
1207
1208 if (!brcmf_usb_dlneeded(devinfo))
1209 return &devinfo->bus_pub;
1210
1211 brcmf_dbg(USB, "Start fw downloading\n");
1212 if (brcmf_usb_get_fw(devinfo))
1213 goto error;
1214
1215 if (brcmf_usb_fw_download(devinfo))
1216 goto error;
1217
1218 return &devinfo->bus_pub;
1219
1220 error:
1221 brcmf_err("failed!\n");
1222 brcmf_usb_detach(devinfo);
1223 return NULL;
1224 }
1225
1226 static struct brcmf_bus_ops brcmf_usb_bus_ops = {
1227 .txdata = brcmf_usb_tx,
1228 .init = brcmf_usb_up,
1229 .stop = brcmf_usb_down,
1230 .txctl = brcmf_usb_tx_ctlpkt,
1231 .rxctl = brcmf_usb_rx_ctlpkt,
1232 };
1233
1234 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1235 {
1236 struct brcmf_bus *bus = NULL;
1237 struct brcmf_usbdev *bus_pub = NULL;
1238 int ret;
1239 struct device *dev = devinfo->dev;
1240
1241 brcmf_dbg(USB, "Enter\n");
1242 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1243 if (!bus_pub)
1244 return -ENODEV;
1245
1246 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1247 if (!bus) {
1248 ret = -ENOMEM;
1249 goto fail;
1250 }
1251
1252 bus->dev = dev;
1253 bus_pub->bus = bus;
1254 bus->bus_priv.usb = bus_pub;
1255 dev_set_drvdata(dev, bus);
1256 bus->ops = &brcmf_usb_bus_ops;
1257 bus->chip = bus_pub->devid;
1258 bus->chiprev = bus_pub->chiprev;
1259
1260 /* Attach to the common driver interface */
1261 ret = brcmf_attach(0, dev);
1262 if (ret) {
1263 brcmf_err("brcmf_attach failed\n");
1264 goto fail;
1265 }
1266
1267 ret = brcmf_bus_start(dev);
1268 if (ret) {
1269 brcmf_err("dongle is not responding\n");
1270 brcmf_detach(dev);
1271 goto fail;
1272 }
1273
1274 return 0;
1275 fail:
1276 /* Release resources in reverse order */
1277 kfree(bus);
1278 brcmf_usb_detach(devinfo);
1279 return ret;
1280 }
1281
1282 static void
1283 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo)
1284 {
1285 if (!devinfo)
1286 return;
1287 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
1288
1289 brcmf_detach(devinfo->dev);
1290 kfree(devinfo->bus_pub.bus);
1291 brcmf_usb_detach(devinfo);
1292 }
1293
1294 static int
1295 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1296 {
1297 int ep;
1298 struct usb_endpoint_descriptor *endpoint;
1299 int ret = 0;
1300 struct usb_device *usb = interface_to_usbdev(intf);
1301 int num_of_eps;
1302 u8 endpoint_num;
1303 struct brcmf_usbdev_info *devinfo;
1304
1305 brcmf_dbg(USB, "Enter\n");
1306
1307 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC);
1308 if (devinfo == NULL)
1309 return -ENOMEM;
1310
1311 devinfo->usbdev = usb;
1312 devinfo->dev = &usb->dev;
1313
1314 usb_set_intfdata(intf, devinfo);
1315
1316 /* Check that the device supports only one configuration */
1317 if (usb->descriptor.bNumConfigurations != 1) {
1318 ret = -1;
1319 goto fail;
1320 }
1321
1322 if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
1323 ret = -1;
1324 goto fail;
1325 }
1326
1327 /*
1328 * Only the BDC interface configuration is supported:
1329 * Device class: USB_CLASS_VENDOR_SPEC
1330 * if0 class: USB_CLASS_VENDOR_SPEC
1331 * if0/ep0: control
1332 * if0/ep1: bulk in
1333 * if0/ep2: bulk out (ok if swapped with bulk in)
1334 */
1335 if (CONFIGDESC(usb)->bNumInterfaces != 1) {
1336 ret = -1;
1337 goto fail;
1338 }
1339
1340 /* Check interface */
1341 if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
1342 IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 ||
1343 IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) {
1344 brcmf_err("invalid control interface: class %d, subclass %d, proto %d\n",
1345 IFDESC(usb, CONTROL_IF).bInterfaceClass,
1346 IFDESC(usb, CONTROL_IF).bInterfaceSubClass,
1347 IFDESC(usb, CONTROL_IF).bInterfaceProtocol);
1348 ret = -1;
1349 goto fail;
1350 }
1351
1352 /* Check control endpoint */
1353 endpoint = &IFEPDESC(usb, CONTROL_IF, 0);
1354 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1355 != USB_ENDPOINT_XFER_INT) {
1356 brcmf_err("invalid control endpoint %d\n",
1357 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
1358 ret = -1;
1359 goto fail;
1360 }
1361
1362 endpoint_num = endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1363 devinfo->intr_pipe = usb_rcvintpipe(usb, endpoint_num);
1364
1365 devinfo->rx_pipe = 0;
1366 devinfo->rx_pipe2 = 0;
1367 devinfo->tx_pipe = 0;
1368 num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1;
1369
1370 /* Check data endpoints and get pipes */
1371 for (ep = 1; ep <= num_of_eps; ep++) {
1372 endpoint = &IFEPDESC(usb, BULK_IF, ep);
1373 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1374 USB_ENDPOINT_XFER_BULK) {
1375 brcmf_err("invalid data endpoint %d\n", ep);
1376 ret = -1;
1377 goto fail;
1378 }
1379
1380 endpoint_num = endpoint->bEndpointAddress &
1381 USB_ENDPOINT_NUMBER_MASK;
1382 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1383 == USB_DIR_IN) {
1384 if (!devinfo->rx_pipe) {
1385 devinfo->rx_pipe =
1386 usb_rcvbulkpipe(usb, endpoint_num);
1387 } else {
1388 devinfo->rx_pipe2 =
1389 usb_rcvbulkpipe(usb, endpoint_num);
1390 }
1391 } else {
1392 devinfo->tx_pipe = usb_sndbulkpipe(usb, endpoint_num);
1393 }
1394 }
1395
1396 /* Allocate interrupt URB and data buffer */
1397 /* RNDIS says 8-byte intr, our old drivers used 4-byte */
1398 if (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == cpu_to_le16(16))
1399 devinfo->intr_size = 8;
1400 else
1401 devinfo->intr_size = 4;
1402
1403 devinfo->interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval;
1404
1405 if (usb->speed == USB_SPEED_HIGH)
1406 brcmf_dbg(USB, "Broadcom high speed USB wireless device detected\n");
1407 else
1408 brcmf_dbg(USB, "Broadcom full speed USB wireless device detected\n");
1409
1410 ret = brcmf_usb_probe_cb(devinfo);
1411 if (ret)
1412 goto fail;
1413
1414 /* Success */
1415 return 0;
1416
1417 fail:
1418 brcmf_err("failed with errno %d\n", ret);
1419 kfree(devinfo);
1420 usb_set_intfdata(intf, NULL);
1421 return ret;
1422
1423 }
1424
1425 static void
1426 brcmf_usb_disconnect(struct usb_interface *intf)
1427 {
1428 struct brcmf_usbdev_info *devinfo;
1429
1430 brcmf_dbg(USB, "Enter\n");
1431 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf);
1432 brcmf_usb_disconnect_cb(devinfo);
1433 kfree(devinfo);
1434 brcmf_dbg(USB, "Exit\n");
1435 }
1436
1437 /*
1438 * only need to signal the bus being down and update the state.
1439 */
1440 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1441 {
1442 struct usb_device *usb = interface_to_usbdev(intf);
1443 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1444
1445 brcmf_dbg(USB, "Enter\n");
1446 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
1447 brcmf_detach(&usb->dev);
1448 return 0;
1449 }
1450
1451 /*
1452 * (re-) start the bus.
1453 */
1454 static int brcmf_usb_resume(struct usb_interface *intf)
1455 {
1456 struct usb_device *usb = interface_to_usbdev(intf);
1457 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1458
1459 brcmf_dbg(USB, "Enter\n");
1460 if (!brcmf_attach(0, devinfo->dev))
1461 return brcmf_bus_start(&usb->dev);
1462
1463 return 0;
1464 }
1465
1466 static int brcmf_usb_reset_resume(struct usb_interface *intf)
1467 {
1468 struct usb_device *usb = interface_to_usbdev(intf);
1469 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1470
1471 brcmf_dbg(USB, "Enter\n");
1472
1473 if (!brcmf_usb_fw_download(devinfo))
1474 return brcmf_usb_resume(intf);
1475
1476 return -EIO;
1477 }
1478
1479 #define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c
1480 #define BRCMF_USB_DEVICE_ID_43143 0xbd1e
1481 #define BRCMF_USB_DEVICE_ID_43236 0xbd17
1482 #define BRCMF_USB_DEVICE_ID_43242 0xbd1f
1483 #define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc
1484
1485 static struct usb_device_id brcmf_usb_devid_table[] = {
1486 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43143) },
1487 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) },
1488 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43242) },
1489 /* special entry for device with firmware loaded and running */
1490 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) },
1491 { }
1492 };
1493
1494 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1495 MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME);
1496 MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME);
1497 MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME);
1498
1499 static struct usb_driver brcmf_usbdrvr = {
1500 .name = KBUILD_MODNAME,
1501 .probe = brcmf_usb_probe,
1502 .disconnect = brcmf_usb_disconnect,
1503 .id_table = brcmf_usb_devid_table,
1504 .suspend = brcmf_usb_suspend,
1505 .resume = brcmf_usb_resume,
1506 .reset_resume = brcmf_usb_reset_resume,
1507 .supports_autosuspend = 1,
1508 .disable_hub_initiated_lpm = 1,
1509 };
1510
1511 static void brcmf_release_fw(struct list_head *q)
1512 {
1513 struct brcmf_usb_image *fw_image, *next;
1514
1515 list_for_each_entry_safe(fw_image, next, q, list) {
1516 vfree(fw_image->image);
1517 list_del_init(&fw_image->list);
1518 }
1519 }
1520
1521 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1522 {
1523 /* device past is the usb interface so we
1524 * need to use parent here.
1525 */
1526 brcmf_dev_reset(dev->parent);
1527 return 0;
1528 }
1529
1530 void brcmf_usb_exit(void)
1531 {
1532 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1533 int ret;
1534
1535 brcmf_dbg(USB, "Enter\n");
1536 ret = driver_for_each_device(drv, NULL, NULL,
1537 brcmf_usb_reset_device);
1538 usb_deregister(&brcmf_usbdrvr);
1539 brcmf_release_fw(&fw_image_list);
1540 }
1541
1542 void brcmf_usb_register(void)
1543 {
1544 brcmf_dbg(USB, "Enter\n");
1545 INIT_LIST_HEAD(&fw_image_list);
1546 usb_register(&brcmf_usbdrvr);
1547 }
Linux with added FPC-III support