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brcmfmac: dont use ZERO flag for usb IN
[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/init.h>
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/kthread.h>
21 #include <linux/slab.h>
22 #include <linux/skbuff.h>
23 #include <linux/netdevice.h>
24 #include <linux/spinlock.h>
25 #include <linux/ethtool.h>
26 #include <linux/fcntl.h>
27 #include <linux/fs.h>
28 #include <linux/uaccess.h>
29 #include <linux/firmware.h>
30 #include <linux/usb.h>
31 #include <linux/vmalloc.h>
32 #include <net/cfg80211.h>
33
34 #include <defs.h>
35 #include <brcmu_utils.h>
36 #include <brcmu_wifi.h>
37 #include <dhd_bus.h>
38 #include <dhd_dbg.h>
39
40 #include "usb_rdl.h"
41 #include "usb.h"
42
43 #define IOCTL_RESP_TIMEOUT 2000
44
45 #define BRCMF_USB_SYNC_TIMEOUT 300 /* ms */
46 #define BRCMF_USB_DLIMAGE_SPINWAIT 100 /* in unit of ms */
47 #define BRCMF_USB_DLIMAGE_LIMIT 500 /* spinwait limit (ms) */
48
49 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle
50 has boot up */
51 #define BRCMF_USB_RESETCFG_SPINWAIT 1 /* wait after resetcfg (ms) */
52
53 #define BRCMF_USB_NRXQ 50
54 #define BRCMF_USB_NTXQ 50
55
56 #define CONFIGDESC(usb) (&((usb)->actconfig)->desc)
57 #define IFPTR(usb, idx) ((usb)->actconfig->interface[(idx)])
58 #define IFALTS(usb, idx) (IFPTR((usb), (idx))->altsetting[0])
59 #define IFDESC(usb, idx) IFALTS((usb), (idx)).desc
60 #define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[(ep)]).desc
61
62 #define CONTROL_IF 0
63 #define BULK_IF 0
64
65 #define BRCMF_USB_CBCTL_WRITE 0
66 #define BRCMF_USB_CBCTL_READ 1
67 #define BRCMF_USB_MAX_PKT_SIZE 1600
68
69 #define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin"
70
71 enum usbdev_suspend_state {
72 USBOS_SUSPEND_STATE_DEVICE_ACTIVE = 0, /* Device is busy, won't allow
73 suspend */
74 USBOS_SUSPEND_STATE_SUSPEND_PENDING, /* Device is idle, can be
75 * suspended. Wating PM to
76 * suspend the device
77 */
78 USBOS_SUSPEND_STATE_SUSPENDED /* Device suspended */
79 };
80
81 struct brcmf_usb_probe_info {
82 void *usbdev_info;
83 struct usb_device *usb; /* USB device pointer from OS */
84 uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2;
85 int intr_size; /* Size of interrupt message */
86 int interval; /* Interrupt polling interval */
87 int vid;
88 int pid;
89 enum usb_device_speed device_speed;
90 enum usbdev_suspend_state suspend_state;
91 struct usb_interface *intf;
92 };
93 static struct brcmf_usb_probe_info usbdev_probe_info;
94
95 struct brcmf_usb_image {
96 void *data;
97 u32 len;
98 };
99 static struct brcmf_usb_image g_image = { NULL, 0 };
100
101 struct intr_transfer_buf {
102 u32 notification;
103 u32 reserved;
104 };
105
106 struct brcmf_usbdev_info {
107 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */
108 spinlock_t qlock;
109 struct list_head rx_freeq;
110 struct list_head rx_postq;
111 struct list_head tx_freeq;
112 struct list_head tx_postq;
113 enum usbdev_suspend_state suspend_state;
114 uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2;
115
116 bool activity;
117 int rx_low_watermark;
118 int tx_low_watermark;
119 int tx_high_watermark;
120 bool txoff;
121 bool rxoff;
122 bool txoverride;
123
124 struct brcmf_usbreq *tx_reqs;
125 struct brcmf_usbreq *rx_reqs;
126
127 u8 *image; /* buffer for combine fw and nvram */
128 int image_len;
129
130 wait_queue_head_t wait;
131 bool waitdone;
132 int sync_urb_status;
133
134 struct usb_device *usbdev;
135 struct device *dev;
136 enum usb_device_speed device_speed;
137
138 int ctl_in_pipe, ctl_out_pipe;
139 struct urb *ctl_urb; /* URB for control endpoint */
140 struct usb_ctrlrequest ctl_write;
141 struct usb_ctrlrequest ctl_read;
142 u32 ctl_urb_actual_length;
143 int ctl_urb_status;
144 int ctl_completed;
145 wait_queue_head_t ioctl_resp_wait;
146 wait_queue_head_t ctrl_wait;
147 ulong ctl_op;
148
149 bool rxctl_deferrespok;
150
151 struct urb *bulk_urb; /* used for FW download */
152 struct urb *intr_urb; /* URB for interrupt endpoint */
153 int intr_size; /* Size of interrupt message */
154 int interval; /* Interrupt polling interval */
155 struct intr_transfer_buf intr; /* Data buffer for interrupt endpoint */
156
157 struct brcmf_usb_probe_info probe_info;
158
159 };
160
161 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
162 struct brcmf_usbreq *req);
163
164 MODULE_AUTHOR("Broadcom Corporation");
165 MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac usb driver.");
166 MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac usb cards");
167 MODULE_LICENSE("Dual BSD/GPL");
168
169 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev)
170 {
171 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
172 return bus_if->bus_priv.usb;
173 }
174
175 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
176 {
177 return brcmf_usb_get_buspub(dev)->devinfo;
178 }
179
180 #if 0
181 static void
182 brcmf_usb_txflowcontrol(struct brcmf_usbdev_info *devinfo, bool onoff)
183 {
184 dhd_txflowcontrol(devinfo->bus_pub.netdev, 0, onoff);
185 }
186 #endif
187
188 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo,
189 uint *condition, bool *pending)
190 {
191 DECLARE_WAITQUEUE(wait, current);
192 int timeout = IOCTL_RESP_TIMEOUT;
193
194 /* Convert timeout in millsecond to jiffies */
195 timeout = msecs_to_jiffies(timeout);
196 /* Wait until control frame is available */
197 add_wait_queue(&devinfo->ioctl_resp_wait, &wait);
198 set_current_state(TASK_INTERRUPTIBLE);
199
200 smp_mb();
201 while (!(*condition) && (!signal_pending(current) && timeout)) {
202 timeout = schedule_timeout(timeout);
203 /* Wait until control frame is available */
204 smp_mb();
205 }
206
207 if (signal_pending(current))
208 *pending = true;
209
210 set_current_state(TASK_RUNNING);
211 remove_wait_queue(&devinfo->ioctl_resp_wait, &wait);
212
213 return timeout;
214 }
215
216 static int brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
217 {
218 if (waitqueue_active(&devinfo->ioctl_resp_wait))
219 wake_up_interruptible(&devinfo->ioctl_resp_wait);
220
221 return 0;
222 }
223
224 static void
225 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
226 {
227
228 if (unlikely(devinfo == NULL))
229 return;
230
231 if (type == BRCMF_USB_CBCTL_READ) {
232 if (status == 0)
233 devinfo->bus_pub.stats.rx_ctlpkts++;
234 else
235 devinfo->bus_pub.stats.rx_ctlerrs++;
236 } else if (type == BRCMF_USB_CBCTL_WRITE) {
237 if (status == 0)
238 devinfo->bus_pub.stats.tx_ctlpkts++;
239 else
240 devinfo->bus_pub.stats.tx_ctlerrs++;
241 }
242
243 devinfo->ctl_urb_status = status;
244 devinfo->ctl_completed = true;
245 brcmf_usb_ioctl_resp_wake(devinfo);
246 }
247
248 static void
249 brcmf_usb_ctlread_complete(struct urb *urb)
250 {
251 struct brcmf_usbdev_info *devinfo =
252 (struct brcmf_usbdev_info *)urb->context;
253
254 devinfo->ctl_urb_actual_length = urb->actual_length;
255 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
256 urb->status);
257 }
258
259 static void
260 brcmf_usb_ctlwrite_complete(struct urb *urb)
261 {
262 struct brcmf_usbdev_info *devinfo =
263 (struct brcmf_usbdev_info *)urb->context;
264
265 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
266 urb->status);
267 }
268
269 static int brcmf_usb_pnp(struct brcmf_usbdev_info *devinfo, uint state)
270 {
271 return 0;
272 }
273
274 static int
275 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
276 {
277 int ret;
278 u16 size;
279
280 if (devinfo == NULL || buf == NULL ||
281 len == 0 || devinfo->ctl_urb == NULL)
282 return -EINVAL;
283
284 /* If the USB/HSIC bus in sleep state, wake it up */
285 if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED)
286 if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) {
287 brcmf_dbg(ERROR, "Could not Resume the bus!\n");
288 return -EIO;
289 }
290
291 devinfo->activity = true;
292 size = len;
293 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
294 devinfo->ctl_urb->transfer_buffer_length = size;
295 devinfo->ctl_urb_status = 0;
296 devinfo->ctl_urb_actual_length = 0;
297
298 usb_fill_control_urb(devinfo->ctl_urb,
299 devinfo->usbdev,
300 devinfo->ctl_out_pipe,
301 (unsigned char *) &devinfo->ctl_write,
302 buf, size,
303 (usb_complete_t)brcmf_usb_ctlwrite_complete,
304 devinfo);
305
306 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
307 if (ret < 0)
308 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
309
310 return ret;
311 }
312
313 static int
314 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
315 {
316 int ret;
317 u16 size;
318
319 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
320 || (devinfo->ctl_urb == NULL))
321 return -EINVAL;
322
323 size = len;
324 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
325 devinfo->ctl_urb->transfer_buffer_length = size;
326
327 if (devinfo->rxctl_deferrespok) {
328 /* BMAC model */
329 devinfo->ctl_read.bRequestType = USB_DIR_IN
330 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE;
331 devinfo->ctl_read.bRequest = DL_DEFER_RESP_OK;
332 } else {
333 /* full dongle model */
334 devinfo->ctl_read.bRequestType = USB_DIR_IN
335 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
336 devinfo->ctl_read.bRequest = 1;
337 }
338
339 usb_fill_control_urb(devinfo->ctl_urb,
340 devinfo->usbdev,
341 devinfo->ctl_in_pipe,
342 (unsigned char *) &devinfo->ctl_read,
343 buf, size,
344 (usb_complete_t)brcmf_usb_ctlread_complete,
345 devinfo);
346
347 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
348 if (ret < 0)
349 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
350
351 return ret;
352 }
353
354 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
355 {
356 int err = 0;
357 int timeout = 0;
358 bool pending;
359 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
360
361 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
362 /* TODO: handle suspend/resume */
363 return -EIO;
364 }
365
366 if (test_and_set_bit(0, &devinfo->ctl_op))
367 return -EIO;
368
369 err = brcmf_usb_send_ctl(devinfo, buf, len);
370 if (err) {
371 brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len);
372 return err;
373 }
374
375 devinfo->ctl_completed = false;
376 timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed,
377 &pending);
378 clear_bit(0, &devinfo->ctl_op);
379 if (!timeout) {
380 brcmf_dbg(ERROR, "Txctl wait timed out\n");
381 err = -EIO;
382 }
383 return err;
384 }
385
386 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
387 {
388 int err = 0;
389 int timeout = 0;
390 bool pending;
391 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
392
393 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
394 /* TODO: handle suspend/resume */
395 return -EIO;
396 }
397 if (test_and_set_bit(0, &devinfo->ctl_op))
398 return -EIO;
399
400 err = brcmf_usb_recv_ctl(devinfo, buf, len);
401 if (err) {
402 brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len);
403 return err;
404 }
405 devinfo->ctl_completed = false;
406 timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed,
407 &pending);
408 err = devinfo->ctl_urb_status;
409 clear_bit(0, &devinfo->ctl_op);
410 if (!timeout) {
411 brcmf_dbg(ERROR, "rxctl wait timed out\n");
412 err = -EIO;
413 }
414 if (!err)
415 return devinfo->ctl_urb_actual_length;
416 else
417 return err;
418 }
419
420 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
421 struct list_head *q)
422 {
423 unsigned long flags;
424 struct brcmf_usbreq *req;
425 spin_lock_irqsave(&devinfo->qlock, flags);
426 if (list_empty(q)) {
427 spin_unlock_irqrestore(&devinfo->qlock, flags);
428 return NULL;
429 }
430 req = list_entry(q->next, struct brcmf_usbreq, list);
431 list_del_init(q->next);
432 spin_unlock_irqrestore(&devinfo->qlock, flags);
433 return req;
434
435 }
436
437 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
438 struct list_head *q, struct brcmf_usbreq *req)
439 {
440 unsigned long flags;
441 spin_lock_irqsave(&devinfo->qlock, flags);
442 list_add_tail(&req->list, q);
443 spin_unlock_irqrestore(&devinfo->qlock, flags);
444 }
445
446 static struct brcmf_usbreq *
447 brcmf_usbdev_qinit(struct list_head *q, int qsize)
448 {
449 int i;
450 struct brcmf_usbreq *req, *reqs;
451
452 reqs = kzalloc(sizeof(struct brcmf_usbreq) * qsize, GFP_ATOMIC);
453 if (reqs == NULL) {
454 brcmf_dbg(ERROR, "fail to allocate memory!\n");
455 return NULL;
456 }
457 req = reqs;
458
459 for (i = 0; i < qsize; i++) {
460 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
461 if (!req->urb)
462 goto fail;
463
464 INIT_LIST_HEAD(&req->list);
465 list_add_tail(&req->list, q);
466 req++;
467 }
468 return reqs;
469 fail:
470 brcmf_dbg(ERROR, "fail!\n");
471 while (!list_empty(q)) {
472 req = list_entry(q->next, struct brcmf_usbreq, list);
473 if (req && req->urb)
474 usb_free_urb(req->urb);
475 list_del(q->next);
476 }
477 return NULL;
478
479 }
480
481 static void brcmf_usb_free_q(struct list_head *q, bool pending)
482 {
483 struct brcmf_usbreq *req, *next;
484 int i = 0;
485 list_for_each_entry_safe(req, next, q, list) {
486 if (!req->urb) {
487 brcmf_dbg(ERROR, "bad req\n");
488 break;
489 }
490 i++;
491 if (pending) {
492 usb_kill_urb(req->urb);
493 } else {
494 usb_free_urb(req->urb);
495 list_del_init(&req->list);
496 }
497 }
498 }
499
500 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
501 struct brcmf_usbreq *req)
502 {
503 unsigned long flags;
504
505 spin_lock_irqsave(&devinfo->qlock, flags);
506 list_del_init(&req->list);
507 spin_unlock_irqrestore(&devinfo->qlock, flags);
508 }
509
510
511 static void brcmf_usb_tx_complete(struct urb *urb)
512 {
513 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
514 struct brcmf_usbdev_info *devinfo = req->devinfo;
515
516 brcmf_usb_del_fromq(devinfo, req);
517 if (urb->status == 0)
518 devinfo->bus_pub.bus->dstats.tx_packets++;
519 else
520 devinfo->bus_pub.bus->dstats.tx_errors++;
521
522 brcmu_pkt_buf_free_skb(req->skb);
523 req->skb = NULL;
524 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req);
525
526 }
527
528 static void brcmf_usb_rx_complete(struct urb *urb)
529 {
530 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
531 struct brcmf_usbdev_info *devinfo = req->devinfo;
532 struct sk_buff *skb;
533 int ifidx = 0;
534
535 brcmf_usb_del_fromq(devinfo, req);
536 skb = req->skb;
537 req->skb = NULL;
538
539 if (urb->status == 0) {
540 devinfo->bus_pub.bus->dstats.rx_packets++;
541 } else {
542 devinfo->bus_pub.bus->dstats.rx_errors++;
543 brcmu_pkt_buf_free_skb(skb);
544 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
545 return;
546 }
547
548 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP) {
549 skb_put(skb, urb->actual_length);
550 if (brcmf_proto_hdrpull(devinfo->dev, &ifidx, skb) != 0) {
551 brcmf_dbg(ERROR, "rx protocol error\n");
552 brcmu_pkt_buf_free_skb(skb);
553 devinfo->bus_pub.bus->dstats.rx_errors++;
554 } else {
555 brcmf_rx_packet(devinfo->dev, ifidx, skb);
556 brcmf_usb_rx_refill(devinfo, req);
557 }
558 } else {
559 brcmu_pkt_buf_free_skb(skb);
560 }
561 return;
562
563 }
564
565 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
566 struct brcmf_usbreq *req)
567 {
568 struct sk_buff *skb;
569 int ret;
570
571 if (!req || !devinfo)
572 return;
573
574 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
575 if (!skb) {
576 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
577 return;
578 }
579 req->skb = skb;
580
581 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
582 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
583 req);
584 req->devinfo = devinfo;
585
586 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
587 if (ret == 0) {
588 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req);
589 } else {
590 brcmu_pkt_buf_free_skb(req->skb);
591 req->skb = NULL;
592 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
593 }
594 return;
595 }
596
597 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
598 {
599 struct brcmf_usbreq *req;
600
601 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
602 brcmf_dbg(ERROR, "bus is not up\n");
603 return;
604 }
605 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq)) != NULL)
606 brcmf_usb_rx_refill(devinfo, req);
607 }
608
609 static void
610 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
611 {
612 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
613 int old_state;
614
615
616 if (devinfo->bus_pub.state == state)
617 return;
618
619 old_state = devinfo->bus_pub.state;
620 brcmf_dbg(TRACE, "dbus state change from %d to to %d\n",
621 old_state, state);
622
623 /* Don't update state if it's PnP firmware re-download */
624 if (state != BCMFMAC_USB_STATE_PNP_FWDL) /* TODO */
625 devinfo->bus_pub.state = state;
626
627 if ((old_state == BCMFMAC_USB_STATE_SLEEP)
628 && (state == BCMFMAC_USB_STATE_UP)) {
629 brcmf_usb_rx_fill_all(devinfo);
630 }
631
632 /* update state of upper layer */
633 if (state == BCMFMAC_USB_STATE_DOWN) {
634 brcmf_dbg(INFO, "DBUS is down\n");
635 bcmf_bus->state = BRCMF_BUS_DOWN;
636 } else {
637 brcmf_dbg(INFO, "DBUS current state=%d\n", state);
638 }
639 }
640
641 static void
642 brcmf_usb_intr_complete(struct urb *urb)
643 {
644 struct brcmf_usbdev_info *devinfo =
645 (struct brcmf_usbdev_info *)urb->context;
646 bool killed;
647
648 if (devinfo == NULL)
649 return;
650
651 if (unlikely(urb->status)) {
652 if (devinfo->suspend_state ==
653 USBOS_SUSPEND_STATE_SUSPEND_PENDING)
654 killed = true;
655
656 if ((urb->status == -ENOENT && (!killed))
657 || urb->status == -ESHUTDOWN ||
658 urb->status == -ENODEV) {
659 brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN);
660 }
661 }
662
663 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN) {
664 brcmf_dbg(ERROR, "intr cb when DBUS down, ignoring\n");
665 return;
666 }
667
668 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP)
669 usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
670 }
671
672 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
673 {
674 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
675 struct brcmf_usbreq *req;
676 int ret;
677
678 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
679 /* TODO: handle suspend/resume */
680 return -EIO;
681 }
682
683 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq);
684 if (!req) {
685 brcmf_dbg(ERROR, "no req to send\n");
686 return -ENOMEM;
687 }
688 if (!req->urb) {
689 brcmf_dbg(ERROR, "no urb for req %p\n", req);
690 return -ENOBUFS;
691 }
692
693 req->skb = skb;
694 req->devinfo = devinfo;
695 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
696 skb->data, skb->len, brcmf_usb_tx_complete, req);
697 req->urb->transfer_flags |= URB_ZERO_PACKET;
698 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
699 if (!ret) {
700 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req);
701 } else {
702 req->skb = NULL;
703 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req);
704 }
705
706 return ret;
707 }
708
709
710 static int brcmf_usb_up(struct device *dev)
711 {
712 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
713 u16 ifnum;
714
715 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP)
716 return 0;
717
718 /* If the USB/HSIC bus in sleep state, wake it up */
719 if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED) {
720 if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) {
721 brcmf_dbg(ERROR, "Could not Resume the bus!\n");
722 return -EIO;
723 }
724 }
725 devinfo->activity = true;
726
727 /* Success, indicate devinfo is fully up */
728 brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_UP);
729
730 if (devinfo->intr_urb) {
731 int ret;
732
733 usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
734 devinfo->intr_pipe,
735 &devinfo->intr,
736 devinfo->intr_size,
737 (usb_complete_t)brcmf_usb_intr_complete,
738 devinfo,
739 devinfo->interval);
740
741 ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
742 if (ret) {
743 brcmf_dbg(ERROR, "USB_SUBMIT_URB failed with status %d\n",
744 ret);
745 return -EINVAL;
746 }
747 }
748
749 if (devinfo->ctl_urb) {
750 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
751 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
752
753 ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
754
755 /* CTL Write */
756 devinfo->ctl_write.bRequestType =
757 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
758 devinfo->ctl_write.bRequest = 0;
759 devinfo->ctl_write.wValue = cpu_to_le16(0);
760 devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
761
762 /* CTL Read */
763 devinfo->ctl_read.bRequestType =
764 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
765 devinfo->ctl_read.bRequest = 1;
766 devinfo->ctl_read.wValue = cpu_to_le16(0);
767 devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
768 }
769 brcmf_usb_rx_fill_all(devinfo);
770 return 0;
771 }
772
773 static void brcmf_usb_down(struct device *dev)
774 {
775 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
776
777 if (devinfo == NULL)
778 return;
779
780 brcmf_dbg(TRACE, "enter\n");
781 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN)
782 return;
783
784 brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN);
785 if (devinfo->intr_urb)
786 usb_kill_urb(devinfo->intr_urb);
787
788 if (devinfo->ctl_urb)
789 usb_kill_urb(devinfo->ctl_urb);
790
791 if (devinfo->bulk_urb)
792 usb_kill_urb(devinfo->bulk_urb);
793 brcmf_usb_free_q(&devinfo->tx_postq, true);
794
795 brcmf_usb_free_q(&devinfo->rx_postq, true);
796 }
797
798 static int
799 brcmf_usb_sync_wait(struct brcmf_usbdev_info *devinfo, u16 time)
800 {
801 int ret;
802 int err = 0;
803 int ms = time;
804
805 ret = wait_event_interruptible_timeout(devinfo->wait,
806 devinfo->waitdone == true, (ms * HZ / 1000));
807
808 if ((devinfo->waitdone == false) || (devinfo->sync_urb_status)) {
809 brcmf_dbg(ERROR, "timeout(%d) or urb err=%d\n",
810 ret, devinfo->sync_urb_status);
811 err = -EINVAL;
812 }
813 devinfo->waitdone = false;
814 return err;
815 }
816
817 static void
818 brcmf_usb_sync_complete(struct urb *urb)
819 {
820 struct brcmf_usbdev_info *devinfo =
821 (struct brcmf_usbdev_info *)urb->context;
822
823 devinfo->waitdone = true;
824 wake_up_interruptible(&devinfo->wait);
825 devinfo->sync_urb_status = urb->status;
826 }
827
828 static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
829 void *buffer, int buflen)
830 {
831 int ret = 0;
832 char *tmpbuf;
833 u16 size;
834
835 if ((!devinfo) || (devinfo->ctl_urb == NULL))
836 return false;
837
838 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
839 if (!tmpbuf)
840 return false;
841
842 size = buflen;
843 devinfo->ctl_urb->transfer_buffer_length = size;
844
845 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
846 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
847 USB_RECIP_INTERFACE;
848 devinfo->ctl_read.bRequest = cmd;
849
850 usb_fill_control_urb(devinfo->ctl_urb,
851 devinfo->usbdev,
852 usb_rcvctrlpipe(devinfo->usbdev, 0),
853 (unsigned char *) &devinfo->ctl_read,
854 (void *) tmpbuf, size,
855 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
856
857 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
858 if (ret < 0) {
859 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
860 kfree(tmpbuf);
861 return false;
862 }
863
864 ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT);
865 memcpy(buffer, tmpbuf, buflen);
866 kfree(tmpbuf);
867
868 return (ret == 0);
869 }
870
871 static bool
872 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
873 {
874 struct bootrom_id_le id;
875 u32 chipid, chiprev;
876
877 brcmf_dbg(TRACE, "enter\n");
878
879 if (devinfo == NULL)
880 return false;
881
882 /* Check if firmware downloaded already by querying runtime ID */
883 id.chip = cpu_to_le32(0xDEAD);
884 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id,
885 sizeof(struct bootrom_id_le));
886
887 chipid = le32_to_cpu(id.chip);
888 chiprev = le32_to_cpu(id.chiprev);
889
890 if ((chipid & 0x4300) == 0x4300)
891 brcmf_dbg(INFO, "chip %x rev 0x%x\n", chipid, chiprev);
892 else
893 brcmf_dbg(INFO, "chip %d rev 0x%x\n", chipid, chiprev);
894 if (chipid == BRCMF_POSTBOOT_ID) {
895 brcmf_dbg(INFO, "firmware already downloaded\n");
896 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id,
897 sizeof(struct bootrom_id_le));
898 return false;
899 } else {
900 devinfo->bus_pub.devid = chipid;
901 devinfo->bus_pub.chiprev = chiprev;
902 }
903 return true;
904 }
905
906 static int
907 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
908 {
909 struct bootrom_id_le id;
910 u16 wait = 0, wait_time;
911
912 brcmf_dbg(TRACE, "enter\n");
913
914 if (devinfo == NULL)
915 return -EINVAL;
916
917 /* Give dongle chance to boot */
918 wait_time = BRCMF_USB_DLIMAGE_SPINWAIT;
919 while (wait < BRCMF_USB_DLIMAGE_LIMIT) {
920 mdelay(wait_time);
921 wait += wait_time;
922 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
923 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id,
924 sizeof(struct bootrom_id_le));
925 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
926 break;
927 }
928
929 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
930 brcmf_dbg(INFO, "download done %d ms postboot chip 0x%x/rev 0x%x\n",
931 wait, le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
932
933 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id,
934 sizeof(struct bootrom_id_le));
935
936 /* XXX this wait may not be necessary */
937 mdelay(BRCMF_USB_RESETCFG_SPINWAIT);
938 return 0;
939 } else {
940 brcmf_dbg(ERROR, "Cannot talk to Dongle. Firmware is not UP, %d ms\n",
941 wait);
942 return -EINVAL;
943 }
944 }
945
946
947 static int
948 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
949 {
950 int ret;
951
952 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
953 return -EINVAL;
954
955 /* Prepare the URB */
956 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
957 devinfo->tx_pipe, buffer, len,
958 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
959
960 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
961
962 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
963 if (ret) {
964 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
965 return ret;
966 }
967 ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT);
968 return ret;
969 }
970
971 static int
972 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
973 {
974 unsigned int sendlen, sent, dllen;
975 char *bulkchunk = NULL, *dlpos;
976 struct rdl_state_le state;
977 u32 rdlstate, rdlbytes;
978 int err = 0;
979 brcmf_dbg(TRACE, "fw %p, len %d\n", fw, fwlen);
980
981 bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC);
982 if (bulkchunk == NULL) {
983 err = -ENOMEM;
984 goto fail;
985 }
986
987 /* 1) Prepare USB boot loader for runtime image */
988 brcmf_usb_dl_cmd(devinfo, DL_START, &state,
989 sizeof(struct rdl_state_le));
990
991 rdlstate = le32_to_cpu(state.state);
992 rdlbytes = le32_to_cpu(state.bytes);
993
994 /* 2) Check we are in the Waiting state */
995 if (rdlstate != DL_WAITING) {
996 brcmf_dbg(ERROR, "Failed to DL_START\n");
997 err = -EINVAL;
998 goto fail;
999 }
1000 sent = 0;
1001 dlpos = fw;
1002 dllen = fwlen;
1003
1004 /* Get chip id and rev */
1005 while (rdlbytes != dllen) {
1006 /* Wait until the usb device reports it received all
1007 * the bytes we sent */
1008 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
1009 if ((dllen-sent) < RDL_CHUNK)
1010 sendlen = dllen-sent;
1011 else
1012 sendlen = RDL_CHUNK;
1013
1014 /* simply avoid having to send a ZLP by ensuring we
1015 * never have an even
1016 * multiple of 64
1017 */
1018 if (!(sendlen % 64))
1019 sendlen -= 4;
1020
1021 /* send data */
1022 memcpy(bulkchunk, dlpos, sendlen);
1023 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
1024 sendlen)) {
1025 brcmf_dbg(ERROR, "send_bulk failed\n");
1026 err = -EINVAL;
1027 goto fail;
1028 }
1029
1030 dlpos += sendlen;
1031 sent += sendlen;
1032 }
1033 if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
1034 sizeof(struct rdl_state_le))) {
1035 brcmf_dbg(ERROR, "DL_GETSTATE Failed xxxx\n");
1036 err = -EINVAL;
1037 goto fail;
1038 }
1039
1040 rdlstate = le32_to_cpu(state.state);
1041 rdlbytes = le32_to_cpu(state.bytes);
1042
1043 /* restart if an error is reported */
1044 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
1045 brcmf_dbg(ERROR, "Bad Hdr or Bad CRC state %d\n",
1046 rdlstate);
1047 err = -EINVAL;
1048 goto fail;
1049 }
1050 }
1051
1052 fail:
1053 kfree(bulkchunk);
1054 brcmf_dbg(TRACE, "err=%d\n", err);
1055 return err;
1056 }
1057
1058 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
1059 {
1060 int err;
1061
1062 brcmf_dbg(TRACE, "enter\n");
1063
1064 if (devinfo == NULL)
1065 return -EINVAL;
1066
1067 if (devinfo->bus_pub.devid == 0xDEAD)
1068 return -EINVAL;
1069
1070 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
1071 if (err == 0)
1072 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_DONE;
1073 else
1074 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_PENDING;
1075 brcmf_dbg(TRACE, "exit: err=%d\n", err);
1076
1077 return err;
1078 }
1079
1080 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
1081 {
1082 struct rdl_state_le state;
1083
1084 brcmf_dbg(TRACE, "enter\n");
1085 if (!devinfo)
1086 return -EINVAL;
1087
1088 if (devinfo->bus_pub.devid == 0xDEAD)
1089 return -EINVAL;
1090
1091 /* Check we are runnable */
1092 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
1093 sizeof(struct rdl_state_le));
1094
1095 /* Start the image */
1096 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
1097 if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state,
1098 sizeof(struct rdl_state_le)))
1099 return -ENODEV;
1100 if (brcmf_usb_resetcfg(devinfo))
1101 return -ENODEV;
1102 /* The Dongle may go for re-enumeration. */
1103 } else {
1104 brcmf_dbg(ERROR, "Dongle not runnable\n");
1105 return -EINVAL;
1106 }
1107 brcmf_dbg(TRACE, "exit\n");
1108 return 0;
1109 }
1110
1111 static bool brcmf_usb_chip_support(int chipid, int chiprev)
1112 {
1113 switch(chipid) {
1114 case 43235:
1115 case 43236:
1116 case 43238:
1117 return (chiprev == 3);
1118 default:
1119 break;
1120 }
1121 return false;
1122 }
1123
1124 static int
1125 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1126 {
1127 int devid, chiprev;
1128 int err;
1129
1130 brcmf_dbg(TRACE, "enter\n");
1131 if (devinfo == NULL)
1132 return -ENODEV;
1133
1134 devid = devinfo->bus_pub.devid;
1135 chiprev = devinfo->bus_pub.chiprev;
1136
1137 if (!brcmf_usb_chip_support(devid, chiprev)) {
1138 brcmf_dbg(ERROR, "unsupported chip %d rev %d\n",
1139 devid, chiprev);
1140 return -EINVAL;
1141 }
1142
1143 if (!devinfo->image) {
1144 brcmf_dbg(ERROR, "No firmware!\n");
1145 return -ENOENT;
1146 }
1147
1148 err = brcmf_usb_dlstart(devinfo,
1149 devinfo->image, devinfo->image_len);
1150 if (err == 0)
1151 err = brcmf_usb_dlrun(devinfo);
1152 return err;
1153 }
1154
1155
1156 static void brcmf_usb_detach(const struct brcmf_usbdev *bus_pub)
1157 {
1158 struct brcmf_usbdev_info *devinfo =
1159 (struct brcmf_usbdev_info *)bus_pub;
1160
1161 brcmf_dbg(TRACE, "devinfo %p\n", devinfo);
1162
1163 /* store the image globally */
1164 g_image.data = devinfo->image;
1165 g_image.len = devinfo->image_len;
1166
1167 /* free the URBS */
1168 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1169 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1170
1171 usb_free_urb(devinfo->intr_urb);
1172 usb_free_urb(devinfo->ctl_urb);
1173 usb_free_urb(devinfo->bulk_urb);
1174
1175 kfree(devinfo->tx_reqs);
1176 kfree(devinfo->rx_reqs);
1177 kfree(devinfo);
1178 }
1179
1180 #define TRX_MAGIC 0x30524448 /* "HDR0" */
1181 #define TRX_VERSION 1 /* Version 1 */
1182 #define TRX_MAX_LEN 0x3B0000 /* Max length */
1183 #define TRX_NO_HEADER 1 /* Do not write TRX header */
1184 #define TRX_MAX_OFFSET 3 /* Max number of individual files */
1185 #define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */
1186
1187 struct trx_header_le {
1188 __le32 magic; /* "HDR0" */
1189 __le32 len; /* Length of file including header */
1190 __le32 crc32; /* CRC from flag_version to end of file */
1191 __le32 flag_version; /* 0:15 flags, 16:31 version */
1192 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
1193 * header */
1194 };
1195
1196 static int check_file(const u8 *headers)
1197 {
1198 struct trx_header_le *trx;
1199 int actual_len = -1;
1200
1201 /* Extract trx header */
1202 trx = (struct trx_header_le *) headers;
1203 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1204 return -1;
1205
1206 headers += sizeof(struct trx_header_le);
1207
1208 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1209 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1210 return actual_len + sizeof(struct trx_header_le);
1211 }
1212 return -1;
1213 }
1214
1215 static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo)
1216 {
1217 s8 *fwname;
1218 const struct firmware *fw;
1219 int err;
1220
1221 devinfo->image = g_image.data;
1222 devinfo->image_len = g_image.len;
1223
1224 /*
1225 * if we have an image we can leave here.
1226 */
1227 if (devinfo->image)
1228 return 0;
1229
1230 fwname = BRCMF_USB_43236_FW_NAME;
1231
1232 err = request_firmware(&fw, fwname, devinfo->dev);
1233 if (!fw) {
1234 brcmf_dbg(ERROR, "fail to request firmware %s\n", fwname);
1235 return err;
1236 }
1237 if (check_file(fw->data) < 0) {
1238 brcmf_dbg(ERROR, "invalid firmware %s\n", fwname);
1239 return -EINVAL;
1240 }
1241
1242 devinfo->image = vmalloc(fw->size); /* plus nvram */
1243 if (!devinfo->image)
1244 return -ENOMEM;
1245
1246 memcpy(devinfo->image, fw->data, fw->size);
1247 devinfo->image_len = fw->size;
1248
1249 release_firmware(fw);
1250 return 0;
1251 }
1252
1253
1254 static
1255 struct brcmf_usbdev *brcmf_usb_attach(int nrxq, int ntxq, struct device *dev)
1256 {
1257 struct brcmf_usbdev_info *devinfo;
1258
1259 devinfo = kzalloc(sizeof(struct brcmf_usbdev_info), GFP_ATOMIC);
1260 if (devinfo == NULL)
1261 return NULL;
1262
1263 devinfo->bus_pub.nrxq = nrxq;
1264 devinfo->rx_low_watermark = nrxq / 2;
1265 devinfo->bus_pub.devinfo = devinfo;
1266 devinfo->bus_pub.ntxq = ntxq;
1267
1268 /* flow control when too many tx urbs posted */
1269 devinfo->tx_low_watermark = ntxq / 4;
1270 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1271 devinfo->dev = dev;
1272 devinfo->usbdev = usbdev_probe_info.usb;
1273 devinfo->tx_pipe = usbdev_probe_info.tx_pipe;
1274 devinfo->rx_pipe = usbdev_probe_info.rx_pipe;
1275 devinfo->rx_pipe2 = usbdev_probe_info.rx_pipe2;
1276 devinfo->intr_pipe = usbdev_probe_info.intr_pipe;
1277
1278 devinfo->interval = usbdev_probe_info.interval;
1279 devinfo->intr_size = usbdev_probe_info.intr_size;
1280
1281 memcpy(&devinfo->probe_info, &usbdev_probe_info,
1282 sizeof(struct brcmf_usb_probe_info));
1283 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1284
1285 /* Initialize other structure content */
1286 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1287
1288 /* Initialize the spinlocks */
1289 spin_lock_init(&devinfo->qlock);
1290
1291 INIT_LIST_HEAD(&devinfo->rx_freeq);
1292 INIT_LIST_HEAD(&devinfo->rx_postq);
1293
1294 INIT_LIST_HEAD(&devinfo->tx_freeq);
1295 INIT_LIST_HEAD(&devinfo->tx_postq);
1296
1297 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1298 if (!devinfo->rx_reqs)
1299 goto error;
1300
1301 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1302 if (!devinfo->tx_reqs)
1303 goto error;
1304
1305 devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC);
1306 if (!devinfo->intr_urb) {
1307 brcmf_dbg(ERROR, "usb_alloc_urb (intr) failed\n");
1308 goto error;
1309 }
1310 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1311 if (!devinfo->ctl_urb) {
1312 brcmf_dbg(ERROR, "usb_alloc_urb (ctl) failed\n");
1313 goto error;
1314 }
1315 devinfo->rxctl_deferrespok = 0;
1316
1317 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1318 if (!devinfo->bulk_urb) {
1319 brcmf_dbg(ERROR, "usb_alloc_urb (bulk) failed\n");
1320 goto error;
1321 }
1322
1323 init_waitqueue_head(&devinfo->wait);
1324 if (!brcmf_usb_dlneeded(devinfo))
1325 return &devinfo->bus_pub;
1326
1327 brcmf_dbg(TRACE, "start fw downloading\n");
1328 if (brcmf_usb_get_fw(devinfo))
1329 goto error;
1330
1331 if (brcmf_usb_fw_download(devinfo))
1332 goto error;
1333
1334 return &devinfo->bus_pub;
1335
1336 error:
1337 brcmf_dbg(ERROR, "failed!\n");
1338 brcmf_usb_detach(&devinfo->bus_pub);
1339 return NULL;
1340 }
1341
1342 static int brcmf_usb_probe_cb(struct device *dev, const char *desc,
1343 u32 bustype, u32 hdrlen)
1344 {
1345 struct brcmf_bus *bus = NULL;
1346 struct brcmf_usbdev *bus_pub = NULL;
1347 int ret;
1348
1349
1350 bus_pub = brcmf_usb_attach(BRCMF_USB_NRXQ, BRCMF_USB_NTXQ, dev);
1351 if (!bus_pub) {
1352 ret = -ENODEV;
1353 goto fail;
1354 }
1355
1356 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1357 if (!bus) {
1358 ret = -ENOMEM;
1359 goto fail;
1360 }
1361
1362 bus_pub->bus = bus;
1363 bus->brcmf_bus_txdata = brcmf_usb_tx;
1364 bus->brcmf_bus_init = brcmf_usb_up;
1365 bus->brcmf_bus_stop = brcmf_usb_down;
1366 bus->brcmf_bus_txctl = brcmf_usb_tx_ctlpkt;
1367 bus->brcmf_bus_rxctl = brcmf_usb_rx_ctlpkt;
1368 bus->type = bustype;
1369 bus->bus_priv.usb = bus_pub;
1370 dev_set_drvdata(dev, bus);
1371
1372 /* Attach to the common driver interface */
1373 ret = brcmf_attach(hdrlen, dev);
1374 if (ret) {
1375 brcmf_dbg(ERROR, "dhd_attach failed\n");
1376 goto fail;
1377 }
1378
1379 ret = brcmf_bus_start(dev);
1380 if (ret == -ENOLINK) {
1381 brcmf_dbg(ERROR, "dongle is not responding\n");
1382 brcmf_detach(dev);
1383 goto fail;
1384 }
1385
1386 return 0;
1387 fail:
1388 /* Release resources in reverse order */
1389 if (bus_pub)
1390 brcmf_usb_detach(bus_pub);
1391 kfree(bus);
1392 return ret;
1393 }
1394
1395 static void
1396 brcmf_usb_disconnect_cb(struct brcmf_usbdev *bus_pub)
1397 {
1398 if (!bus_pub)
1399 return;
1400 brcmf_dbg(TRACE, "enter: bus_pub %p\n", bus_pub);
1401
1402 brcmf_detach(bus_pub->devinfo->dev);
1403 kfree(bus_pub->bus);
1404 brcmf_usb_detach(bus_pub);
1405
1406 }
1407
1408 static int
1409 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1410 {
1411 int ep;
1412 struct usb_endpoint_descriptor *endpoint;
1413 int ret = 0;
1414 struct usb_device *usb = interface_to_usbdev(intf);
1415 int num_of_eps;
1416 u8 endpoint_num;
1417
1418 brcmf_dbg(TRACE, "enter\n");
1419
1420 usbdev_probe_info.usb = usb;
1421 usbdev_probe_info.intf = intf;
1422
1423 if (id != NULL) {
1424 usbdev_probe_info.vid = id->idVendor;
1425 usbdev_probe_info.pid = id->idProduct;
1426 }
1427
1428 usb_set_intfdata(intf, &usbdev_probe_info);
1429
1430 /* Check that the device supports only one configuration */
1431 if (usb->descriptor.bNumConfigurations != 1) {
1432 ret = -1;
1433 goto fail;
1434 }
1435
1436 if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
1437 ret = -1;
1438 goto fail;
1439 }
1440
1441 /*
1442 * Only the BDC interface configuration is supported:
1443 * Device class: USB_CLASS_VENDOR_SPEC
1444 * if0 class: USB_CLASS_VENDOR_SPEC
1445 * if0/ep0: control
1446 * if0/ep1: bulk in
1447 * if0/ep2: bulk out (ok if swapped with bulk in)
1448 */
1449 if (CONFIGDESC(usb)->bNumInterfaces != 1) {
1450 ret = -1;
1451 goto fail;
1452 }
1453
1454 /* Check interface */
1455 if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
1456 IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 ||
1457 IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) {
1458 brcmf_dbg(ERROR, "invalid control interface: class %d, subclass %d, proto %d\n",
1459 IFDESC(usb, CONTROL_IF).bInterfaceClass,
1460 IFDESC(usb, CONTROL_IF).bInterfaceSubClass,
1461 IFDESC(usb, CONTROL_IF).bInterfaceProtocol);
1462 ret = -1;
1463 goto fail;
1464 }
1465
1466 /* Check control endpoint */
1467 endpoint = &IFEPDESC(usb, CONTROL_IF, 0);
1468 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1469 != USB_ENDPOINT_XFER_INT) {
1470 brcmf_dbg(ERROR, "invalid control endpoint %d\n",
1471 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
1472 ret = -1;
1473 goto fail;
1474 }
1475
1476 endpoint_num = endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1477 usbdev_probe_info.intr_pipe = usb_rcvintpipe(usb, endpoint_num);
1478
1479 usbdev_probe_info.rx_pipe = 0;
1480 usbdev_probe_info.rx_pipe2 = 0;
1481 usbdev_probe_info.tx_pipe = 0;
1482 num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1;
1483
1484 /* Check data endpoints and get pipes */
1485 for (ep = 1; ep <= num_of_eps; ep++) {
1486 endpoint = &IFEPDESC(usb, BULK_IF, ep);
1487 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1488 USB_ENDPOINT_XFER_BULK) {
1489 brcmf_dbg(ERROR, "invalid data endpoint %d\n", ep);
1490 ret = -1;
1491 goto fail;
1492 }
1493
1494 endpoint_num = endpoint->bEndpointAddress &
1495 USB_ENDPOINT_NUMBER_MASK;
1496 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1497 == USB_DIR_IN) {
1498 if (!usbdev_probe_info.rx_pipe) {
1499 usbdev_probe_info.rx_pipe =
1500 usb_rcvbulkpipe(usb, endpoint_num);
1501 } else {
1502 usbdev_probe_info.rx_pipe2 =
1503 usb_rcvbulkpipe(usb, endpoint_num);
1504 }
1505 } else {
1506 usbdev_probe_info.tx_pipe =
1507 usb_sndbulkpipe(usb, endpoint_num);
1508 }
1509 }
1510
1511 /* Allocate interrupt URB and data buffer */
1512 /* RNDIS says 8-byte intr, our old drivers used 4-byte */
1513 if (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == cpu_to_le16(16))
1514 usbdev_probe_info.intr_size = 8;
1515 else
1516 usbdev_probe_info.intr_size = 4;
1517
1518 usbdev_probe_info.interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval;
1519
1520 usbdev_probe_info.device_speed = usb->speed;
1521 if (usb->speed == USB_SPEED_HIGH)
1522 brcmf_dbg(INFO, "Broadcom high speed USB wireless device detected\n");
1523 else
1524 brcmf_dbg(INFO, "Broadcom full speed USB wireless device detected\n");
1525
1526 ret = brcmf_usb_probe_cb(&usb->dev, "", USB_BUS, 0);
1527 if (ret)
1528 goto fail;
1529
1530 /* Success */
1531 return 0;
1532
1533 fail:
1534 brcmf_dbg(ERROR, "failed with errno %d\n", ret);
1535 usb_set_intfdata(intf, NULL);
1536 return ret;
1537
1538 }
1539
1540 static void
1541 brcmf_usb_disconnect(struct usb_interface *intf)
1542 {
1543 struct usb_device *usb = interface_to_usbdev(intf);
1544
1545 brcmf_dbg(TRACE, "enter\n");
1546 brcmf_usb_disconnect_cb(brcmf_usb_get_buspub(&usb->dev));
1547 usb_set_intfdata(intf, NULL);
1548 }
1549
1550 /*
1551 * only need to signal the bus being down and update the suspend state.
1552 */
1553 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1554 {
1555 struct usb_device *usb = interface_to_usbdev(intf);
1556 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1557
1558 brcmf_dbg(TRACE, "enter\n");
1559 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DOWN;
1560 devinfo->suspend_state = USBOS_SUSPEND_STATE_SUSPENDED;
1561 return 0;
1562 }
1563
1564 /*
1565 * mark suspend state active and crank up the bus.
1566 */
1567 static int brcmf_usb_resume(struct usb_interface *intf)
1568 {
1569 struct usb_device *usb = interface_to_usbdev(intf);
1570 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1571
1572 brcmf_dbg(TRACE, "enter\n");
1573 devinfo->suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE;
1574 brcmf_bus_start(&usb->dev);
1575 return 0;
1576 }
1577
1578 #define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c
1579 #define BRCMF_USB_DEVICE_ID_43236 0xbd17
1580 #define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc
1581
1582 static struct usb_device_id brcmf_usb_devid_table[] = {
1583 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) },
1584 /* special entry for device with firmware loaded and running */
1585 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) },
1586 { }
1587 };
1588 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1589 MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME);
1590
1591 /* TODO: suspend and resume entries */
1592 static struct usb_driver brcmf_usbdrvr = {
1593 .name = KBUILD_MODNAME,
1594 .probe = brcmf_usb_probe,
1595 .disconnect = brcmf_usb_disconnect,
1596 .id_table = brcmf_usb_devid_table,
1597 .suspend = brcmf_usb_suspend,
1598 .resume = brcmf_usb_resume,
1599 .supports_autosuspend = 1,
1600 .disable_hub_initiated_lpm = 1,
1601 };
1602
1603 void brcmf_usb_exit(void)
1604 {
1605 usb_deregister(&brcmf_usbdrvr);
1606 vfree(g_image.data);
1607 g_image.data = NULL;
1608 g_image.len = 0;
1609 }
1610
1611 void brcmf_usb_init(void)
1612 {
1613 usb_register(&brcmf_usbdrvr);
1614 }
Linux kernel - Deliverables
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