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drivers: net: Remove remaining alloc/OOM messages
[linux-2.6/cjktty.git] / drivers / net / wireless / brcm80211 / brcmfmac / usb.c
blobbc5a042c9a96aa3e25b61a046fe8610b92d5135f
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
86 struct brcmf_usbreq *tx_reqs;
87 struct brcmf_usbreq *rx_reqs;
88
89 u8 *image; /* buffer for combine fw and nvram */
90 int image_len;
91
92 struct usb_device *usbdev;
93 struct device *dev;
94
95 int ctl_in_pipe, ctl_out_pipe;
96 struct urb *ctl_urb; /* URB for control endpoint */
97 struct usb_ctrlrequest ctl_write;
98 struct usb_ctrlrequest ctl_read;
99 u32 ctl_urb_actual_length;
100 int ctl_urb_status;
101 int ctl_completed;
102 wait_queue_head_t ioctl_resp_wait;
103 ulong ctl_op;
104
105 struct urb *bulk_urb; /* used for FW download */
106 struct urb *intr_urb; /* URB for interrupt endpoint */
107 int intr_size; /* Size of interrupt message */
108 int interval; /* Interrupt polling interval */
109 struct intr_transfer_buf intr; /* Data buffer for interrupt endpoint */
110 };
111
112 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
113 struct brcmf_usbreq *req);
114
115 MODULE_AUTHOR("Broadcom Corporation");
116 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac usb driver.");
117 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac usb cards");
118 MODULE_LICENSE("Dual BSD/GPL");
119
120 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev)
121 {
122 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
123 return bus_if->bus_priv.usb;
124 }
125
126 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
127 {
128 return brcmf_usb_get_buspub(dev)->devinfo;
129 }
130
131 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo)
132 {
133 return wait_event_timeout(devinfo->ioctl_resp_wait,
134 devinfo->ctl_completed,
135 msecs_to_jiffies(IOCTL_RESP_TIMEOUT));
136 }
137
138 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
139 {
140 if (waitqueue_active(&devinfo->ioctl_resp_wait))
141 wake_up(&devinfo->ioctl_resp_wait);
142 }
143
144 static void
145 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
146 {
147 brcmf_dbg(USB, "Enter, status=%d\n", status);
148
149 if (unlikely(devinfo == NULL))
150 return;
151
152 if (type == BRCMF_USB_CBCTL_READ) {
153 if (status == 0)
154 devinfo->bus_pub.stats.rx_ctlpkts++;
155 else
156 devinfo->bus_pub.stats.rx_ctlerrs++;
157 } else if (type == BRCMF_USB_CBCTL_WRITE) {
158 if (status == 0)
159 devinfo->bus_pub.stats.tx_ctlpkts++;
160 else
161 devinfo->bus_pub.stats.tx_ctlerrs++;
162 }
163
164 devinfo->ctl_urb_status = status;
165 devinfo->ctl_completed = true;
166 brcmf_usb_ioctl_resp_wake(devinfo);
167 }
168
169 static void
170 brcmf_usb_ctlread_complete(struct urb *urb)
171 {
172 struct brcmf_usbdev_info *devinfo =
173 (struct brcmf_usbdev_info *)urb->context;
174
175 brcmf_dbg(USB, "Enter\n");
176 devinfo->ctl_urb_actual_length = urb->actual_length;
177 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
178 urb->status);
179 }
180
181 static void
182 brcmf_usb_ctlwrite_complete(struct urb *urb)
183 {
184 struct brcmf_usbdev_info *devinfo =
185 (struct brcmf_usbdev_info *)urb->context;
186
187 brcmf_dbg(USB, "Enter\n");
188 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
189 urb->status);
190 }
191
192 static int
193 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
194 {
195 int ret;
196 u16 size;
197
198 brcmf_dbg(USB, "Enter\n");
199 if (devinfo == NULL || buf == NULL ||
200 len == 0 || devinfo->ctl_urb == NULL)
201 return -EINVAL;
202
203 size = len;
204 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
205 devinfo->ctl_urb->transfer_buffer_length = size;
206 devinfo->ctl_urb_status = 0;
207 devinfo->ctl_urb_actual_length = 0;
208
209 usb_fill_control_urb(devinfo->ctl_urb,
210 devinfo->usbdev,
211 devinfo->ctl_out_pipe,
212 (unsigned char *) &devinfo->ctl_write,
213 buf, size,
214 (usb_complete_t)brcmf_usb_ctlwrite_complete,
215 devinfo);
216
217 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
218 if (ret < 0)
219 brcmf_err("usb_submit_urb failed %d\n", ret);
220
221 return ret;
222 }
223
224 static int
225 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
226 {
227 int ret;
228 u16 size;
229
230 brcmf_dbg(USB, "Enter\n");
231 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
232 || (devinfo->ctl_urb == NULL))
233 return -EINVAL;
234
235 size = len;
236 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
237 devinfo->ctl_urb->transfer_buffer_length = size;
238
239 devinfo->ctl_read.bRequestType = USB_DIR_IN
240 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
241 devinfo->ctl_read.bRequest = 1;
242
243 usb_fill_control_urb(devinfo->ctl_urb,
244 devinfo->usbdev,
245 devinfo->ctl_in_pipe,
246 (unsigned char *) &devinfo->ctl_read,
247 buf, size,
248 (usb_complete_t)brcmf_usb_ctlread_complete,
249 devinfo);
250
251 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
252 if (ret < 0)
253 brcmf_err("usb_submit_urb failed %d\n", ret);
254
255 return ret;
256 }
257
258 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
259 {
260 int err = 0;
261 int timeout = 0;
262 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
263
264 brcmf_dbg(USB, "Enter\n");
265 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
266 return -EIO;
267
268 if (test_and_set_bit(0, &devinfo->ctl_op))
269 return -EIO;
270
271 devinfo->ctl_completed = false;
272 err = brcmf_usb_send_ctl(devinfo, buf, len);
273 if (err) {
274 brcmf_err("fail %d bytes: %d\n", err, len);
275 clear_bit(0, &devinfo->ctl_op);
276 return err;
277 }
278 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
279 clear_bit(0, &devinfo->ctl_op);
280 if (!timeout) {
281 brcmf_err("Txctl wait timed out\n");
282 err = -EIO;
283 }
284 return err;
285 }
286
287 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
288 {
289 int err = 0;
290 int timeout = 0;
291 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
292
293 brcmf_dbg(USB, "Enter\n");
294 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
295 return -EIO;
296
297 if (test_and_set_bit(0, &devinfo->ctl_op))
298 return -EIO;
299
300 devinfo->ctl_completed = false;
301 err = brcmf_usb_recv_ctl(devinfo, buf, len);
302 if (err) {
303 brcmf_err("fail %d bytes: %d\n", err, len);
304 clear_bit(0, &devinfo->ctl_op);
305 return err;
306 }
307 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
308 err = devinfo->ctl_urb_status;
309 clear_bit(0, &devinfo->ctl_op);
310 if (!timeout) {
311 brcmf_err("rxctl wait timed out\n");
312 err = -EIO;
313 }
314 if (!err)
315 return devinfo->ctl_urb_actual_length;
316 else
317 return err;
318 }
319
320 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
321 struct list_head *q, int *counter)
322 {
323 unsigned long flags;
324 struct brcmf_usbreq *req;
325 spin_lock_irqsave(&devinfo->qlock, flags);
326 if (list_empty(q)) {
327 spin_unlock_irqrestore(&devinfo->qlock, flags);
328 return NULL;
329 }
330 req = list_entry(q->next, struct brcmf_usbreq, list);
331 list_del_init(q->next);
332 if (counter)
333 (*counter)--;
334 spin_unlock_irqrestore(&devinfo->qlock, flags);
335 return req;
336
337 }
338
339 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
340 struct list_head *q, struct brcmf_usbreq *req,
341 int *counter)
342 {
343 unsigned long flags;
344 spin_lock_irqsave(&devinfo->qlock, flags);
345 list_add_tail(&req->list, q);
346 if (counter)
347 (*counter)++;
348 spin_unlock_irqrestore(&devinfo->qlock, flags);
349 }
350
351 static struct brcmf_usbreq *
352 brcmf_usbdev_qinit(struct list_head *q, int qsize)
353 {
354 int i;
355 struct brcmf_usbreq *req, *reqs;
356
357 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC);
358 if (reqs == NULL)
359 return NULL;
360
361 req = reqs;
362
363 for (i = 0; i < qsize; i++) {
364 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
365 if (!req->urb)
366 goto fail;
367
368 INIT_LIST_HEAD(&req->list);
369 list_add_tail(&req->list, q);
370 req++;
371 }
372 return reqs;
373 fail:
374 brcmf_err("fail!\n");
375 while (!list_empty(q)) {
376 req = list_entry(q->next, struct brcmf_usbreq, list);
377 if (req && req->urb)
378 usb_free_urb(req->urb);
379 list_del(q->next);
380 }
381 return NULL;
382
383 }
384
385 static void brcmf_usb_free_q(struct list_head *q, bool pending)
386 {
387 struct brcmf_usbreq *req, *next;
388 int i = 0;
389 list_for_each_entry_safe(req, next, q, list) {
390 if (!req->urb) {
391 brcmf_err("bad req\n");
392 break;
393 }
394 i++;
395 if (pending) {
396 usb_kill_urb(req->urb);
397 } else {
398 usb_free_urb(req->urb);
399 list_del_init(&req->list);
400 }
401 }
402 }
403
404 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
405 struct brcmf_usbreq *req)
406 {
407 unsigned long flags;
408
409 spin_lock_irqsave(&devinfo->qlock, flags);
410 list_del_init(&req->list);
411 spin_unlock_irqrestore(&devinfo->qlock, flags);
412 }
413
414
415 static void brcmf_usb_tx_complete(struct urb *urb)
416 {
417 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
418 struct brcmf_usbdev_info *devinfo = req->devinfo;
419
420 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
421 req->skb);
422 brcmf_usb_del_fromq(devinfo, req);
423 if (urb->status == 0)
424 devinfo->bus_pub.bus->dstats.tx_packets++;
425 else
426 devinfo->bus_pub.bus->dstats.tx_errors++;
427
428 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0);
429
430 brcmu_pkt_buf_free_skb(req->skb);
431 req->skb = NULL;
432 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount);
433 if (devinfo->tx_freecount > devinfo->tx_high_watermark &&
434 devinfo->tx_flowblock) {
435 brcmf_txflowblock(devinfo->dev, false);
436 devinfo->tx_flowblock = false;
437 }
438 }
439
440 static void brcmf_usb_rx_complete(struct urb *urb)
441 {
442 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
443 struct brcmf_usbdev_info *devinfo = req->devinfo;
444 struct sk_buff *skb;
445 struct sk_buff_head skbq;
446
447 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
448 brcmf_usb_del_fromq(devinfo, req);
449 skb = req->skb;
450 req->skb = NULL;
451
452 /* zero lenght packets indicate usb "failure". Do not refill */
453 if (urb->status == 0 && urb->actual_length) {
454 devinfo->bus_pub.bus->dstats.rx_packets++;
455 } else {
456 devinfo->bus_pub.bus->dstats.rx_errors++;
457 brcmu_pkt_buf_free_skb(skb);
458 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
459 return;
460 }
461
462 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
463 skb_queue_head_init(&skbq);
464 skb_queue_tail(&skbq, skb);
465 skb_put(skb, urb->actual_length);
466 brcmf_rx_frames(devinfo->dev, &skbq);
467 brcmf_usb_rx_refill(devinfo, req);
468 } else {
469 brcmu_pkt_buf_free_skb(skb);
470 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
471 }
472 return;
473
474 }
475
476 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
477 struct brcmf_usbreq *req)
478 {
479 struct sk_buff *skb;
480 int ret;
481
482 if (!req || !devinfo)
483 return;
484
485 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
486 if (!skb) {
487 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
488 return;
489 }
490 req->skb = skb;
491
492 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
493 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
494 req);
495 req->devinfo = devinfo;
496 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL);
497
498 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
499 if (ret) {
500 brcmf_usb_del_fromq(devinfo, req);
501 brcmu_pkt_buf_free_skb(req->skb);
502 req->skb = NULL;
503 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
504 }
505 return;
506 }
507
508 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
509 {
510 struct brcmf_usbreq *req;
511
512 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
513 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state);
514 return;
515 }
516 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL)
517 brcmf_usb_rx_refill(devinfo, req);
518 }
519
520 static void
521 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
522 {
523 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
524 int old_state;
525
526 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
527 devinfo->bus_pub.state, state);
528
529 if (devinfo->bus_pub.state == state)
530 return;
531
532 old_state = devinfo->bus_pub.state;
533 devinfo->bus_pub.state = state;
534
535 /* update state of upper layer */
536 if (state == BRCMFMAC_USB_STATE_DOWN) {
537 brcmf_dbg(USB, "DBUS is down\n");
538 bcmf_bus->state = BRCMF_BUS_DOWN;
539 } else if (state == BRCMFMAC_USB_STATE_UP) {
540 brcmf_dbg(USB, "DBUS is up\n");
541 bcmf_bus->state = BRCMF_BUS_DATA;
542 } else {
543 brcmf_dbg(USB, "DBUS current state=%d\n", state);
544 }
545 }
546
547 static void
548 brcmf_usb_intr_complete(struct urb *urb)
549 {
550 struct brcmf_usbdev_info *devinfo =
551 (struct brcmf_usbdev_info *)urb->context;
552 int err;
553
554 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
555
556 if (devinfo == NULL)
557 return;
558
559 if (unlikely(urb->status)) {
560 if (urb->status == -ENOENT ||
561 urb->status == -ESHUTDOWN ||
562 urb->status == -ENODEV) {
563 brcmf_usb_state_change(devinfo,
564 BRCMFMAC_USB_STATE_DOWN);
565 }
566 }
567
568 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) {
569 brcmf_err("intr cb when DBUS down, ignoring\n");
570 return;
571 }
572
573 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
574 err = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
575 if (err)
576 brcmf_err("usb_submit_urb, err=%d\n", err);
577 }
578 }
579
580 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
581 {
582 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
583 struct brcmf_usbreq *req;
584 int ret;
585
586 brcmf_dbg(USB, "Enter, skb=%p\n", skb);
587 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
588 return -EIO;
589
590 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
591 &devinfo->tx_freecount);
592 if (!req) {
593 brcmu_pkt_buf_free_skb(skb);
594 brcmf_err("no req to send\n");
595 return -ENOMEM;
596 }
597
598 req->skb = skb;
599 req->devinfo = devinfo;
600 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
601 skb->data, skb->len, brcmf_usb_tx_complete, req);
602 req->urb->transfer_flags |= URB_ZERO_PACKET;
603 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
604 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
605 if (ret) {
606 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
607 brcmf_usb_del_fromq(devinfo, req);
608 brcmu_pkt_buf_free_skb(req->skb);
609 req->skb = NULL;
610 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
611 &devinfo->tx_freecount);
612 } else {
613 if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
614 !devinfo->tx_flowblock) {
615 brcmf_txflowblock(dev, true);
616 devinfo->tx_flowblock = true;
617 }
618 }
619
620 return ret;
621 }
622
623
624 static int brcmf_usb_up(struct device *dev)
625 {
626 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
627 u16 ifnum;
628 int ret;
629
630 brcmf_dbg(USB, "Enter\n");
631 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
632 return 0;
633
634 /* Success, indicate devinfo is fully up */
635 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
636
637 if (devinfo->intr_urb) {
638 usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
639 devinfo->intr_pipe,
640 &devinfo->intr,
641 devinfo->intr_size,
642 (usb_complete_t)brcmf_usb_intr_complete,
643 devinfo,
644 devinfo->interval);
645
646 ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
647 if (ret) {
648 brcmf_err("USB_SUBMIT_URB failed with status %d\n",
649 ret);
650 return -EINVAL;
651 }
652 }
653
654 if (devinfo->ctl_urb) {
655 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
656 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
657
658 ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
659
660 /* CTL Write */
661 devinfo->ctl_write.bRequestType =
662 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
663 devinfo->ctl_write.bRequest = 0;
664 devinfo->ctl_write.wValue = cpu_to_le16(0);
665 devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
666
667 /* CTL Read */
668 devinfo->ctl_read.bRequestType =
669 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
670 devinfo->ctl_read.bRequest = 1;
671 devinfo->ctl_read.wValue = cpu_to_le16(0);
672 devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
673 }
674 brcmf_usb_rx_fill_all(devinfo);
675 return 0;
676 }
677
678 static void brcmf_usb_down(struct device *dev)
679 {
680 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
681
682 brcmf_dbg(USB, "Enter\n");
683 if (devinfo == NULL)
684 return;
685
686 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
687 return;
688
689 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
690 if (devinfo->intr_urb)
691 usb_kill_urb(devinfo->intr_urb);
692
693 if (devinfo->ctl_urb)
694 usb_kill_urb(devinfo->ctl_urb);
695
696 if (devinfo->bulk_urb)
697 usb_kill_urb(devinfo->bulk_urb);
698 brcmf_usb_free_q(&devinfo->tx_postq, true);
699
700 brcmf_usb_free_q(&devinfo->rx_postq, true);
701 }
702
703 static void
704 brcmf_usb_sync_complete(struct urb *urb)
705 {
706 struct brcmf_usbdev_info *devinfo =
707 (struct brcmf_usbdev_info *)urb->context;
708
709 devinfo->ctl_completed = true;
710 brcmf_usb_ioctl_resp_wake(devinfo);
711 }
712
713 static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
714 void *buffer, int buflen)
715 {
716 int ret = 0;
717 char *tmpbuf;
718 u16 size;
719
720 if ((!devinfo) || (devinfo->ctl_urb == NULL))
721 return false;
722
723 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
724 if (!tmpbuf)
725 return false;
726
727 size = buflen;
728 devinfo->ctl_urb->transfer_buffer_length = size;
729
730 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
731 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
732 USB_RECIP_INTERFACE;
733 devinfo->ctl_read.bRequest = cmd;
734
735 usb_fill_control_urb(devinfo->ctl_urb,
736 devinfo->usbdev,
737 usb_rcvctrlpipe(devinfo->usbdev, 0),
738 (unsigned char *) &devinfo->ctl_read,
739 (void *) tmpbuf, size,
740 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
741
742 devinfo->ctl_completed = false;
743 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
744 if (ret < 0) {
745 brcmf_err("usb_submit_urb failed %d\n", ret);
746 kfree(tmpbuf);
747 return false;
748 }
749
750 ret = brcmf_usb_ioctl_resp_wait(devinfo);
751 memcpy(buffer, tmpbuf, buflen);
752 kfree(tmpbuf);
753
754 return ret;
755 }
756
757 static bool
758 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
759 {
760 struct bootrom_id_le id;
761 u32 chipid, chiprev;
762
763 brcmf_dbg(USB, "Enter\n");
764
765 if (devinfo == NULL)
766 return false;
767
768 /* Check if firmware downloaded already by querying runtime ID */
769 id.chip = cpu_to_le32(0xDEAD);
770 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
771
772 chipid = le32_to_cpu(id.chip);
773 chiprev = le32_to_cpu(id.chiprev);
774
775 if ((chipid & 0x4300) == 0x4300)
776 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
777 else
778 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
779 if (chipid == BRCMF_POSTBOOT_ID) {
780 brcmf_dbg(USB, "firmware already downloaded\n");
781 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
782 return false;
783 } else {
784 devinfo->bus_pub.devid = chipid;
785 devinfo->bus_pub.chiprev = chiprev;
786 }
787 return true;
788 }
789
790 static int
791 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
792 {
793 struct bootrom_id_le id;
794 u32 loop_cnt;
795
796 brcmf_dbg(USB, "Enter\n");
797
798 loop_cnt = 0;
799 do {
800 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
801 loop_cnt++;
802 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
803 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
804 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
805 break;
806 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT);
807
808 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
809 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n",
810 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
811
812 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
813 return 0;
814 } else {
815 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n",
816 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt);
817 return -EINVAL;
818 }
819 }
820
821
822 static int
823 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
824 {
825 int ret;
826
827 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
828 return -EINVAL;
829
830 /* Prepare the URB */
831 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
832 devinfo->tx_pipe, buffer, len,
833 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
834
835 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
836
837 devinfo->ctl_completed = false;
838 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
839 if (ret) {
840 brcmf_err("usb_submit_urb failed %d\n", ret);
841 return ret;
842 }
843 ret = brcmf_usb_ioctl_resp_wait(devinfo);
844 return (ret == 0);
845 }
846
847 static int
848 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
849 {
850 unsigned int sendlen, sent, dllen;
851 char *bulkchunk = NULL, *dlpos;
852 struct rdl_state_le state;
853 u32 rdlstate, rdlbytes;
854 int err = 0;
855
856 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen);
857
858 bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC);
859 if (bulkchunk == NULL) {
860 err = -ENOMEM;
861 goto fail;
862 }
863
864 /* 1) Prepare USB boot loader for runtime image */
865 brcmf_usb_dl_cmd(devinfo, DL_START, &state,
866 sizeof(struct rdl_state_le));
867
868 rdlstate = le32_to_cpu(state.state);
869 rdlbytes = le32_to_cpu(state.bytes);
870
871 /* 2) Check we are in the Waiting state */
872 if (rdlstate != DL_WAITING) {
873 brcmf_err("Failed to DL_START\n");
874 err = -EINVAL;
875 goto fail;
876 }
877 sent = 0;
878 dlpos = fw;
879 dllen = fwlen;
880
881 /* Get chip id and rev */
882 while (rdlbytes != dllen) {
883 /* Wait until the usb device reports it received all
884 * the bytes we sent */
885 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
886 if ((dllen-sent) < RDL_CHUNK)
887 sendlen = dllen-sent;
888 else
889 sendlen = RDL_CHUNK;
890
891 /* simply avoid having to send a ZLP by ensuring we
892 * never have an even
893 * multiple of 64
894 */
895 if (!(sendlen % 64))
896 sendlen -= 4;
897
898 /* send data */
899 memcpy(bulkchunk, dlpos, sendlen);
900 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
901 sendlen)) {
902 brcmf_err("send_bulk failed\n");
903 err = -EINVAL;
904 goto fail;
905 }
906
907 dlpos += sendlen;
908 sent += sendlen;
909 }
910 if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
911 sizeof(struct rdl_state_le))) {
912 brcmf_err("DL_GETSTATE Failed xxxx\n");
913 err = -EINVAL;
914 goto fail;
915 }
916
917 rdlstate = le32_to_cpu(state.state);
918 rdlbytes = le32_to_cpu(state.bytes);
919
920 /* restart if an error is reported */
921 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
922 brcmf_err("Bad Hdr or Bad CRC state %d\n",
923 rdlstate);
924 err = -EINVAL;
925 goto fail;
926 }
927 }
928
929 fail:
930 kfree(bulkchunk);
931 brcmf_dbg(USB, "Exit, err=%d\n", err);
932 return err;
933 }
934
935 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
936 {
937 int err;
938
939 brcmf_dbg(USB, "Enter\n");
940
941 if (devinfo == NULL)
942 return -EINVAL;
943
944 if (devinfo->bus_pub.devid == 0xDEAD)
945 return -EINVAL;
946
947 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
948 if (err == 0)
949 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
950 else
951 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
952 brcmf_dbg(USB, "Exit, err=%d\n", err);
953
954 return err;
955 }
956
957 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
958 {
959 struct rdl_state_le state;
960
961 brcmf_dbg(USB, "Enter\n");
962 if (!devinfo)
963 return -EINVAL;
964
965 if (devinfo->bus_pub.devid == 0xDEAD)
966 return -EINVAL;
967
968 /* Check we are runnable */
969 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
970 sizeof(struct rdl_state_le));
971
972 /* Start the image */
973 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
974 if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state,
975 sizeof(struct rdl_state_le)))
976 return -ENODEV;
977 if (brcmf_usb_resetcfg(devinfo))
978 return -ENODEV;
979 /* The Dongle may go for re-enumeration. */
980 } else {
981 brcmf_err("Dongle not runnable\n");
982 return -EINVAL;
983 }
984 brcmf_dbg(USB, "Exit\n");
985 return 0;
986 }
987
988 static bool brcmf_usb_chip_support(int chipid, int chiprev)
989 {
990 switch(chipid) {
991 case 43143:
992 return true;
993 case 43235:
994 case 43236:
995 case 43238:
996 return (chiprev == 3);
997 case 43242:
998 return true;
999 default:
1000 break;
1001 }
1002 return false;
1003 }
1004
1005 static int
1006 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1007 {
1008 int devid, chiprev;
1009 int err;
1010
1011 brcmf_dbg(USB, "Enter\n");
1012 if (devinfo == NULL)
1013 return -ENODEV;
1014
1015 devid = devinfo->bus_pub.devid;
1016 chiprev = devinfo->bus_pub.chiprev;
1017
1018 if (!brcmf_usb_chip_support(devid, chiprev)) {
1019 brcmf_err("unsupported chip %d rev %d\n",
1020 devid, chiprev);
1021 return -EINVAL;
1022 }
1023
1024 if (!devinfo->image) {
1025 brcmf_err("No firmware!\n");
1026 return -ENOENT;
1027 }
1028
1029 err = brcmf_usb_dlstart(devinfo,
1030 devinfo->image, devinfo->image_len);
1031 if (err == 0)
1032 err = brcmf_usb_dlrun(devinfo);
1033 return err;
1034 }
1035
1036
1037 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1038 {
1039 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1040
1041 /* free the URBS */
1042 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1043 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1044
1045 usb_free_urb(devinfo->intr_urb);
1046 usb_free_urb(devinfo->ctl_urb);
1047 usb_free_urb(devinfo->bulk_urb);
1048
1049 kfree(devinfo->tx_reqs);
1050 kfree(devinfo->rx_reqs);
1051 }
1052
1053 #define TRX_MAGIC 0x30524448 /* "HDR0" */
1054 #define TRX_VERSION 1 /* Version 1 */
1055 #define TRX_MAX_LEN 0x3B0000 /* Max length */
1056 #define TRX_NO_HEADER 1 /* Do not write TRX header */
1057 #define TRX_MAX_OFFSET 3 /* Max number of individual files */
1058 #define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */
1059
1060 struct trx_header_le {
1061 __le32 magic; /* "HDR0" */
1062 __le32 len; /* Length of file including header */
1063 __le32 crc32; /* CRC from flag_version to end of file */
1064 __le32 flag_version; /* 0:15 flags, 16:31 version */
1065 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
1066 * header */
1067 };
1068
1069 static int check_file(const u8 *headers)
1070 {
1071 struct trx_header_le *trx;
1072 int actual_len = -1;
1073
1074 brcmf_dbg(USB, "Enter\n");
1075 /* Extract trx header */
1076 trx = (struct trx_header_le *) headers;
1077 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1078 return -1;
1079
1080 headers += sizeof(struct trx_header_le);
1081
1082 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1083 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1084 return actual_len + sizeof(struct trx_header_le);
1085 }
1086 return -1;
1087 }
1088
1089 static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo)
1090 {
1091 s8 *fwname;
1092 const struct firmware *fw;
1093 struct brcmf_usb_image *fw_image;
1094 int err;
1095
1096 brcmf_dbg(USB, "Enter\n");
1097 switch (devinfo->bus_pub.devid) {
1098 case 43143:
1099 fwname = BRCMF_USB_43143_FW_NAME;
1100 break;
1101 case 43235:
1102 case 43236:
1103 case 43238:
1104 fwname = BRCMF_USB_43236_FW_NAME;
1105 break;
1106 case 43242:
1107 fwname = BRCMF_USB_43242_FW_NAME;
1108 break;
1109 default:
1110 return -EINVAL;
1111 break;
1112 }
1113 brcmf_dbg(USB, "Loading FW %s\n", fwname);
1114 list_for_each_entry(fw_image, &fw_image_list, list) {
1115 if (fw_image->fwname == fwname) {
1116 devinfo->image = fw_image->image;
1117 devinfo->image_len = fw_image->image_len;
1118 return 0;
1119 }
1120 }
1121 /* fw image not yet loaded. Load it now and add to list */
1122 err = request_firmware(&fw, fwname, devinfo->dev);
1123 if (!fw) {
1124 brcmf_err("fail to request firmware %s\n", fwname);
1125 return err;
1126 }
1127 if (check_file(fw->data) < 0) {
1128 brcmf_err("invalid firmware %s\n", fwname);
1129 return -EINVAL;
1130 }
1131
1132 fw_image = kzalloc(sizeof(*fw_image), GFP_ATOMIC);
1133 if (!fw_image)
1134 return -ENOMEM;
1135 INIT_LIST_HEAD(&fw_image->list);
1136 list_add_tail(&fw_image->list, &fw_image_list);
1137 fw_image->fwname = fwname;
1138 fw_image->image = vmalloc(fw->size);
1139 if (!fw_image->image)
1140 return -ENOMEM;
1141
1142 memcpy(fw_image->image, fw->data, fw->size);
1143 fw_image->image_len = fw->size;
1144
1145 release_firmware(fw);
1146
1147 devinfo->image = fw_image->image;
1148 devinfo->image_len = fw_image->image_len;
1149
1150 return 0;
1151 }
1152
1153
1154 static
1155 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1156 int nrxq, int ntxq)
1157 {
1158 brcmf_dbg(USB, "Enter\n");
1159
1160 devinfo->bus_pub.nrxq = nrxq;
1161 devinfo->rx_low_watermark = nrxq / 2;
1162 devinfo->bus_pub.devinfo = devinfo;
1163 devinfo->bus_pub.ntxq = ntxq;
1164 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1165
1166 /* flow control when too many tx urbs posted */
1167 devinfo->tx_low_watermark = ntxq / 4;
1168 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1169 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1170
1171 /* Initialize other structure content */
1172 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1173
1174 /* Initialize the spinlocks */
1175 spin_lock_init(&devinfo->qlock);
1176
1177 INIT_LIST_HEAD(&devinfo->rx_freeq);
1178 INIT_LIST_HEAD(&devinfo->rx_postq);
1179
1180 INIT_LIST_HEAD(&devinfo->tx_freeq);
1181 INIT_LIST_HEAD(&devinfo->tx_postq);
1182
1183 devinfo->tx_flowblock = false;
1184
1185 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1186 if (!devinfo->rx_reqs)
1187 goto error;
1188
1189 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1190 if (!devinfo->tx_reqs)
1191 goto error;
1192 devinfo->tx_freecount = ntxq;
1193
1194 devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC);
1195 if (!devinfo->intr_urb) {
1196 brcmf_err("usb_alloc_urb (intr) failed\n");
1197 goto error;
1198 }
1199 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1200 if (!devinfo->ctl_urb) {
1201 brcmf_err("usb_alloc_urb (ctl) failed\n");
1202 goto error;
1203 }
1204 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1205 if (!devinfo->bulk_urb) {
1206 brcmf_err("usb_alloc_urb (bulk) failed\n");
1207 goto error;
1208 }
1209
1210 if (!brcmf_usb_dlneeded(devinfo))
1211 return &devinfo->bus_pub;
1212
1213 brcmf_dbg(USB, "Start fw downloading\n");
1214 if (brcmf_usb_get_fw(devinfo))
1215 goto error;
1216
1217 if (brcmf_usb_fw_download(devinfo))
1218 goto error;
1219
1220 return &devinfo->bus_pub;
1221
1222 error:
1223 brcmf_err("failed!\n");
1224 brcmf_usb_detach(devinfo);
1225 return NULL;
1226 }
1227
1228 static struct brcmf_bus_ops brcmf_usb_bus_ops = {
1229 .txdata = brcmf_usb_tx,
1230 .init = brcmf_usb_up,
1231 .stop = brcmf_usb_down,
1232 .txctl = brcmf_usb_tx_ctlpkt,
1233 .rxctl = brcmf_usb_rx_ctlpkt,
1234 };
1235
1236 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1237 {
1238 struct brcmf_bus *bus = NULL;
1239 struct brcmf_usbdev *bus_pub = NULL;
1240 int ret;
1241 struct device *dev = devinfo->dev;
1242
1243 brcmf_dbg(USB, "Enter\n");
1244 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1245 if (!bus_pub)
1246 return -ENODEV;
1247
1248 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1249 if (!bus) {
1250 ret = -ENOMEM;
1251 goto fail;
1252 }
1253
1254 bus->dev = dev;
1255 bus_pub->bus = bus;
1256 bus->bus_priv.usb = bus_pub;
1257 dev_set_drvdata(dev, bus);
1258 bus->ops = &brcmf_usb_bus_ops;
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 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1494 MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME);
1495 MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME);
1496 MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME);
1497
1498 static struct usb_driver brcmf_usbdrvr = {
1499 .name = KBUILD_MODNAME,
1500 .probe = brcmf_usb_probe,
1501 .disconnect = brcmf_usb_disconnect,
1502 .id_table = brcmf_usb_devid_table,
1503 .suspend = brcmf_usb_suspend,
1504 .resume = brcmf_usb_resume,
1505 .reset_resume = brcmf_usb_reset_resume,
1506 .supports_autosuspend = 1,
1507 .disable_hub_initiated_lpm = 1,
1508 };
1509
1510 static void brcmf_release_fw(struct list_head *q)
1511 {
1512 struct brcmf_usb_image *fw_image, *next;
1513
1514 list_for_each_entry_safe(fw_image, next, q, list) {
1515 vfree(fw_image->image);
1516 list_del_init(&fw_image->list);
1517 }
1518 }
1519
1520 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1521 {
1522 /* device past is the usb interface so we
1523 * need to use parent here.
1524 */
1525 brcmf_dev_reset(dev->parent);
1526 return 0;
1527 }
1528
1529 void brcmf_usb_exit(void)
1530 {
1531 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1532 int ret;
1533
1534 brcmf_dbg(USB, "Enter\n");
1535 ret = driver_for_each_device(drv, NULL, NULL,
1536 brcmf_usb_reset_device);
1537 usb_deregister(&brcmf_usbdrvr);
1538 brcmf_release_fw(&fw_image_list);
1539 }
1540
1541 void brcmf_usb_init(void)
1542 {
1543 brcmf_dbg(USB, "Enter\n");
1544 INIT_LIST_HEAD(&fw_image_list);
1545 usb_register(&brcmf_usbdrvr);
1546 }
CJK support for tty framebuffer vt