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path: root/drivers/net/wireless/brcm80211/brcmfmac/usb.c
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Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/usb.c')
-rw-r--r--drivers/net/wireless/brcm80211/brcmfmac/usb.c1623
1 files changed, 1623 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
new file mode 100644
index 000000000000..934ed782620c
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
@@ -0,0 +1,1623 @@
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 <net/cfg80211.h>
32
33#include <defs.h>
34#include <brcmu_utils.h>
35#include <brcmu_wifi.h>
36#include <dhd_bus.h>
37#include <dhd_dbg.h>
38
39#include "usb_rdl.h"
40#include "usb.h"
41
42#define IOCTL_RESP_TIMEOUT 2000
43
44#define BRCMF_USB_SYNC_TIMEOUT 300 /* ms */
45#define BRCMF_USB_DLIMAGE_SPINWAIT 100 /* in unit of ms */
46#define BRCMF_USB_DLIMAGE_LIMIT 500 /* spinwait limit (ms) */
47
48#define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle
49 has boot up */
50#define BRCMF_USB_RESETCFG_SPINWAIT 1 /* wait after resetcfg (ms) */
51
52#define BRCMF_USB_NRXQ 50
53#define BRCMF_USB_NTXQ 50
54
55#define CONFIGDESC(usb) (&((usb)->actconfig)->desc)
56#define IFPTR(usb, idx) ((usb)->actconfig->interface[(idx)])
57#define IFALTS(usb, idx) (IFPTR((usb), (idx))->altsetting[0])
58#define IFDESC(usb, idx) IFALTS((usb), (idx)).desc
59#define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[(ep)]).desc
60
61#define CONTROL_IF 0
62#define BULK_IF 0
63
64#define BRCMF_USB_CBCTL_WRITE 0
65#define BRCMF_USB_CBCTL_READ 1
66#define BRCMF_USB_MAX_PKT_SIZE 1600
67
68#define BRCMF_USB_FW_NAME "brcm/brcmfmac-usb.bin"
69
70enum usbdev_suspend_state {
71 USBOS_SUSPEND_STATE_DEVICE_ACTIVE = 0, /* Device is busy, won't allow
72 suspend */
73 USBOS_SUSPEND_STATE_SUSPEND_PENDING, /* Device is idle, can be
74 * suspended. Wating PM to
75 * suspend the device
76 */
77 USBOS_SUSPEND_STATE_SUSPENDED /* Device suspended */
78};
79
80struct brcmf_usb_probe_info {
81 void *usbdev_info;
82 struct usb_device *usb; /* USB device pointer from OS */
83 uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2;
84 int intr_size; /* Size of interrupt message */
85 int interval; /* Interrupt polling interval */
86 int vid;
87 int pid;
88 enum usb_device_speed device_speed;
89 enum usbdev_suspend_state suspend_state;
90 struct usb_interface *intf;
91};
92static struct brcmf_usb_probe_info usbdev_probe_info;
93
94struct brcmf_usb_image {
95 void *data;
96 u32 len;
97};
98static struct brcmf_usb_image g_image = { NULL, 0 };
99
100struct intr_transfer_buf {
101 u32 notification;
102 u32 reserved;
103};
104
105struct brcmf_usbdev_info {
106 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */
107 spinlock_t qlock;
108 struct list_head rx_freeq;
109 struct list_head rx_postq;
110 struct list_head tx_freeq;
111 struct list_head tx_postq;
112 enum usbdev_suspend_state suspend_state;
113 uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2;
114
115 bool activity;
116 int rx_low_watermark;
117 int tx_low_watermark;
118 int tx_high_watermark;
119 bool txoff;
120 bool rxoff;
121 bool txoverride;
122
123 struct brcmf_usbreq *tx_reqs;
124 struct brcmf_usbreq *rx_reqs;
125
126 u8 *image; /* buffer for combine fw and nvram */
127 int image_len;
128
129 wait_queue_head_t wait;
130 bool waitdone;
131 int sync_urb_status;
132
133 struct usb_device *usbdev;
134 struct device *dev;
135 enum usb_device_speed device_speed;
136
137 int ctl_in_pipe, ctl_out_pipe;
138 struct urb *ctl_urb; /* URB for control endpoint */
139 struct usb_ctrlrequest ctl_write;
140 struct usb_ctrlrequest ctl_read;
141 u32 ctl_urb_actual_length;
142 int ctl_urb_status;
143 int ctl_completed;
144 wait_queue_head_t ioctl_resp_wait;
145 wait_queue_head_t ctrl_wait;
146 ulong ctl_op;
147
148 bool rxctl_deferrespok;
149
150 struct urb *bulk_urb; /* used for FW download */
151 struct urb *intr_urb; /* URB for interrupt endpoint */
152 int intr_size; /* Size of interrupt message */
153 int interval; /* Interrupt polling interval */
154 struct intr_transfer_buf intr; /* Data buffer for interrupt endpoint */
155
156 struct brcmf_usb_probe_info probe_info;
157
158};
159
160static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
161 struct brcmf_usbreq *req);
162
163MODULE_AUTHOR("Broadcom Corporation");
164MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac usb driver.");
165MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac usb cards");
166MODULE_LICENSE("Dual BSD/GPL");
167
168static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev)
169{
170 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
171 return bus_if->bus_priv.usb;
172}
173
174static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
175{
176 return brcmf_usb_get_buspub(dev)->devinfo;
177}
178
179#if 0
180static void
181brcmf_usb_txflowcontrol(struct brcmf_usbdev_info *devinfo, bool onoff)
182{
183 dhd_txflowcontrol(devinfo->bus_pub.netdev, 0, onoff);
184}
185#endif
186
187static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo,
188 uint *condition, bool *pending)
189{
190 DECLARE_WAITQUEUE(wait, current);
191 int timeout = IOCTL_RESP_TIMEOUT;
192
193 /* Convert timeout in millsecond to jiffies */
194 timeout = msecs_to_jiffies(timeout);
195 /* Wait until control frame is available */
196 add_wait_queue(&devinfo->ioctl_resp_wait, &wait);
197 set_current_state(TASK_INTERRUPTIBLE);
198
199 smp_mb();
200 while (!(*condition) && (!signal_pending(current) && timeout)) {
201 timeout = schedule_timeout(timeout);
202 /* Wait until control frame is available */
203 smp_mb();
204 }
205
206 if (signal_pending(current))
207 *pending = true;
208
209 set_current_state(TASK_RUNNING);
210 remove_wait_queue(&devinfo->ioctl_resp_wait, &wait);
211
212 return timeout;
213}
214
215static int brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
216{
217 if (waitqueue_active(&devinfo->ioctl_resp_wait))
218 wake_up_interruptible(&devinfo->ioctl_resp_wait);
219
220 return 0;
221}
222
223static void
224brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
225{
226
227 if (unlikely(devinfo == NULL))
228 return;
229
230 if (type == BRCMF_USB_CBCTL_READ) {
231 if (status == 0)
232 devinfo->bus_pub.stats.rx_ctlpkts++;
233 else
234 devinfo->bus_pub.stats.rx_ctlerrs++;
235 } else if (type == BRCMF_USB_CBCTL_WRITE) {
236 if (status == 0)
237 devinfo->bus_pub.stats.tx_ctlpkts++;
238 else
239 devinfo->bus_pub.stats.tx_ctlerrs++;
240 }
241
242 devinfo->ctl_urb_status = status;
243 devinfo->ctl_completed = true;
244 brcmf_usb_ioctl_resp_wake(devinfo);
245}
246
247static void
248brcmf_usb_ctlread_complete(struct urb *urb)
249{
250 struct brcmf_usbdev_info *devinfo =
251 (struct brcmf_usbdev_info *)urb->context;
252
253 devinfo->ctl_urb_actual_length = urb->actual_length;
254 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
255 urb->status);
256}
257
258static void
259brcmf_usb_ctlwrite_complete(struct urb *urb)
260{
261 struct brcmf_usbdev_info *devinfo =
262 (struct brcmf_usbdev_info *)urb->context;
263
264 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
265 urb->status);
266}
267
268static int brcmf_usb_pnp(struct brcmf_usbdev_info *devinfo, uint state)
269{
270 return 0;
271}
272
273static int
274brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
275{
276 int ret;
277 u16 size;
278
279 if (devinfo == NULL || buf == NULL ||
280 len == 0 || devinfo->ctl_urb == NULL)
281 return -EINVAL;
282
283 /* If the USB/HSIC bus in sleep state, wake it up */
284 if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED)
285 if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) {
286 brcmf_dbg(ERROR, "Could not Resume the bus!\n");
287 return -EIO;
288 }
289
290 devinfo->activity = true;
291 size = len;
292 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
293 devinfo->ctl_urb->transfer_buffer_length = size;
294 devinfo->ctl_urb_status = 0;
295 devinfo->ctl_urb_actual_length = 0;
296
297 usb_fill_control_urb(devinfo->ctl_urb,
298 devinfo->usbdev,
299 devinfo->ctl_out_pipe,
300 (unsigned char *) &devinfo->ctl_write,
301 buf, size,
302 (usb_complete_t)brcmf_usb_ctlwrite_complete,
303 devinfo);
304
305 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
306 if (ret < 0)
307 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
308
309 return ret;
310}
311
312static int
313brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
314{
315 int ret;
316 u16 size;
317
318 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
319 || (devinfo->ctl_urb == NULL))
320 return -EINVAL;
321
322 size = len;
323 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
324 devinfo->ctl_urb->transfer_buffer_length = size;
325
326 if (devinfo->rxctl_deferrespok) {
327 /* BMAC model */
328 devinfo->ctl_read.bRequestType = USB_DIR_IN
329 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE;
330 devinfo->ctl_read.bRequest = DL_DEFER_RESP_OK;
331 } else {
332 /* full dongle model */
333 devinfo->ctl_read.bRequestType = USB_DIR_IN
334 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
335 devinfo->ctl_read.bRequest = 1;
336 }
337
338 usb_fill_control_urb(devinfo->ctl_urb,
339 devinfo->usbdev,
340 devinfo->ctl_in_pipe,
341 (unsigned char *) &devinfo->ctl_read,
342 buf, size,
343 (usb_complete_t)brcmf_usb_ctlread_complete,
344 devinfo);
345
346 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
347 if (ret < 0)
348 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
349
350 return ret;
351}
352
353static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
354{
355 int err = 0;
356 int timeout = 0;
357 bool pending;
358 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
359
360 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
361 /* TODO: handle suspend/resume */
362 return -EIO;
363 }
364
365 if (test_and_set_bit(0, &devinfo->ctl_op))
366 return -EIO;
367
368 err = brcmf_usb_send_ctl(devinfo, buf, len);
369 if (err) {
370 brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len);
371 return err;
372 }
373
374 devinfo->ctl_completed = false;
375 timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed,
376 &pending);
377 clear_bit(0, &devinfo->ctl_op);
378 if (!timeout) {
379 brcmf_dbg(ERROR, "Txctl wait timed out\n");
380 err = -EIO;
381 }
382 return err;
383}
384
385static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
386{
387 int err = 0;
388 int timeout = 0;
389 bool pending;
390 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
391
392 if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) {
393 /* TODO: handle suspend/resume */
394 return -EIO;
395 }
396 if (test_and_set_bit(0, &devinfo->ctl_op))
397 return -EIO;
398
399 err = brcmf_usb_recv_ctl(devinfo, buf, len);
400 if (err) {
401 brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len);
402 return err;
403 }
404 devinfo->ctl_completed = false;
405 timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed,
406 &pending);
407 err = devinfo->ctl_urb_status;
408 clear_bit(0, &devinfo->ctl_op);
409 if (!timeout) {
410 brcmf_dbg(ERROR, "rxctl wait timed out\n");
411 err = -EIO;
412 }
413 if (!err)
414 return devinfo->ctl_urb_actual_length;
415 else
416 return err;
417}
418
419static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
420 struct list_head *q)
421{
422 unsigned long flags;
423 struct brcmf_usbreq *req;
424 spin_lock_irqsave(&devinfo->qlock, flags);
425 if (list_empty(q)) {
426 spin_unlock_irqrestore(&devinfo->qlock, flags);
427 return NULL;
428 }
429 req = list_entry(q->next, struct brcmf_usbreq, list);
430 list_del_init(q->next);
431 spin_unlock_irqrestore(&devinfo->qlock, flags);
432 return req;
433
434}
435
436static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
437 struct list_head *q, struct brcmf_usbreq *req)
438{
439 unsigned long flags;
440 spin_lock_irqsave(&devinfo->qlock, flags);
441 list_add_tail(&req->list, q);
442 spin_unlock_irqrestore(&devinfo->qlock, flags);
443}
444
445static struct brcmf_usbreq *
446brcmf_usbdev_qinit(struct list_head *q, int qsize)
447{
448 int i;
449 struct brcmf_usbreq *req, *reqs;
450
451 reqs = kzalloc(sizeof(struct brcmf_usbreq) * qsize, GFP_ATOMIC);
452 if (reqs == NULL) {
453 brcmf_dbg(ERROR, "fail to allocate memory!\n");
454 return NULL;
455 }
456 req = reqs;
457
458 for (i = 0; i < qsize; i++) {
459 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
460 if (!req->urb)
461 goto fail;
462
463 INIT_LIST_HEAD(&req->list);
464 list_add_tail(&req->list, q);
465 req++;
466 }
467 return reqs;
468fail:
469 brcmf_dbg(ERROR, "fail!\n");
470 while (!list_empty(q)) {
471 req = list_entry(q->next, struct brcmf_usbreq, list);
472 if (req && req->urb)
473 usb_free_urb(req->urb);
474 list_del(q->next);
475 }
476 return NULL;
477
478}
479
480static void brcmf_usb_free_q(struct list_head *q, bool pending)
481{
482 struct brcmf_usbreq *req, *next;
483 int i = 0;
484 list_for_each_entry_safe(req, next, q, list) {
485 if (!req || !req->urb) {
486 brcmf_dbg(ERROR, "bad req\n");
487 break;
488 }
489 i++;
490 if (pending) {
491 usb_kill_urb(req->urb);
492 } else {
493 usb_free_urb(req->urb);
494 list_del_init(&req->list);
495 }
496 }
497}
498
499static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
500 struct brcmf_usbreq *req)
501{
502 unsigned long flags;
503
504 spin_lock_irqsave(&devinfo->qlock, flags);
505 list_del_init(&req->list);
506 spin_unlock_irqrestore(&devinfo->qlock, flags);
507}
508
509
510static void brcmf_usb_tx_complete(struct urb *urb)
511{
512 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
513 struct brcmf_usbdev_info *devinfo = req->devinfo;
514
515 brcmf_usb_del_fromq(devinfo, req);
516 if (urb->status == 0)
517 devinfo->bus_pub.stats.tx_packets++;
518 else
519 devinfo->bus_pub.stats.tx_errors++;
520
521 dev_kfree_skb(req->skb);
522 req->skb = NULL;
523 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req);
524
525}
526
527static void brcmf_usb_rx_complete(struct urb *urb)
528{
529 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
530 struct brcmf_usbdev_info *devinfo = req->devinfo;
531 struct sk_buff *skb;
532 int ifidx = 0;
533
534 brcmf_usb_del_fromq(devinfo, req);
535 skb = req->skb;
536 req->skb = NULL;
537
538 if (urb->status == 0) {
539 devinfo->bus_pub.stats.rx_packets++;
540 } else {
541 devinfo->bus_pub.stats.rx_errors++;
542 dev_kfree_skb(skb);
543 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
544 return;
545 }
546
547 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP) {
548 skb_put(skb, urb->actual_length);
549 if (brcmf_proto_hdrpull(devinfo->dev, &ifidx, skb) != 0) {
550 brcmf_dbg(ERROR, "rx protocol error\n");
551 brcmu_pkt_buf_free_skb(skb);
552 devinfo->bus_pub.bus->dstats.rx_errors++;
553 } else {
554 brcmf_rx_packet(devinfo->dev, ifidx, skb);
555 brcmf_usb_rx_refill(devinfo, req);
556 }
557 } else {
558 dev_kfree_skb(skb);
559 }
560 return;
561
562}
563
564static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
565 struct brcmf_usbreq *req)
566{
567 struct sk_buff *skb;
568 int ret;
569
570 if (!req || !devinfo)
571 return;
572
573 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
574 if (!skb) {
575 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
576 return;
577 }
578 req->skb = skb;
579
580 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
581 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
582 req);
583 req->urb->transfer_flags |= URB_ZERO_PACKET;
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 dev_kfree_skb(req->skb);
591 req->skb = NULL;
592 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req);
593 }
594 return;
595}
596
597static 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
609static void
610brcmf_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
641static void
642brcmf_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
672static 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
710static 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 (devinfo == NULL)
719 return -EINVAL;
720
721 /* If the USB/HSIC bus in sleep state, wake it up */
722 if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED) {
723 if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) {
724 brcmf_dbg(ERROR, "Could not Resume the bus!\n");
725 return -EIO;
726 }
727 }
728 devinfo->activity = true;
729
730 /* Success, indicate devinfo is fully up */
731 brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_UP);
732
733 if (devinfo->intr_urb) {
734 int ret;
735
736 usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev,
737 devinfo->intr_pipe,
738 &devinfo->intr,
739 devinfo->intr_size,
740 (usb_complete_t)brcmf_usb_intr_complete,
741 devinfo,
742 devinfo->interval);
743
744 ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC);
745 if (ret) {
746 brcmf_dbg(ERROR, "USB_SUBMIT_URB failed with status %d\n",
747 ret);
748 return -EINVAL;
749 }
750 }
751
752 if (devinfo->ctl_urb) {
753 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
754 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
755
756 ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber;
757
758 /* CTL Write */
759 devinfo->ctl_write.bRequestType =
760 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
761 devinfo->ctl_write.bRequest = 0;
762 devinfo->ctl_write.wValue = cpu_to_le16(0);
763 devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum);
764
765 /* CTL Read */
766 devinfo->ctl_read.bRequestType =
767 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
768 devinfo->ctl_read.bRequest = 1;
769 devinfo->ctl_read.wValue = cpu_to_le16(0);
770 devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum);
771 }
772 brcmf_usb_rx_fill_all(devinfo);
773 return 0;
774}
775
776static void brcmf_usb_down(struct device *dev)
777{
778 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
779
780 if (devinfo == NULL)
781 return;
782
783 brcmf_dbg(TRACE, "enter\n");
784 if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN)
785 return;
786
787 brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN);
788 if (devinfo->intr_urb)
789 usb_kill_urb(devinfo->intr_urb);
790
791 if (devinfo->ctl_urb)
792 usb_kill_urb(devinfo->ctl_urb);
793
794 if (devinfo->bulk_urb)
795 usb_kill_urb(devinfo->bulk_urb);
796 brcmf_usb_free_q(&devinfo->tx_postq, true);
797
798 brcmf_usb_free_q(&devinfo->rx_postq, true);
799}
800
801static int
802brcmf_usb_sync_wait(struct brcmf_usbdev_info *devinfo, u16 time)
803{
804 int ret;
805 int err = 0;
806 int ms = time;
807
808 ret = wait_event_interruptible_timeout(devinfo->wait,
809 devinfo->waitdone == true, (ms * HZ / 1000));
810
811 if ((devinfo->waitdone == false) || (devinfo->sync_urb_status)) {
812 brcmf_dbg(ERROR, "timeout(%d) or urb err=%d\n",
813 ret, devinfo->sync_urb_status);
814 err = -EINVAL;
815 }
816 devinfo->waitdone = false;
817 return err;
818}
819
820static void
821brcmf_usb_sync_complete(struct urb *urb)
822{
823 struct brcmf_usbdev_info *devinfo =
824 (struct brcmf_usbdev_info *)urb->context;
825
826 devinfo->waitdone = true;
827 wake_up_interruptible(&devinfo->wait);
828 devinfo->sync_urb_status = urb->status;
829}
830
831static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
832 void *buffer, int buflen)
833{
834 int ret = 0;
835 char *tmpbuf;
836 u16 size;
837
838 if ((!devinfo) || (devinfo->ctl_urb == NULL))
839 return false;
840
841 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
842 if (!tmpbuf)
843 return false;
844
845 size = buflen;
846 devinfo->ctl_urb->transfer_buffer_length = size;
847
848 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
849 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
850 USB_RECIP_INTERFACE;
851 devinfo->ctl_read.bRequest = cmd;
852
853 usb_fill_control_urb(devinfo->ctl_urb,
854 devinfo->usbdev,
855 usb_rcvctrlpipe(devinfo->usbdev, 0),
856 (unsigned char *) &devinfo->ctl_read,
857 (void *) tmpbuf, size,
858 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
859
860 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
861 if (ret < 0) {
862 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
863 kfree(tmpbuf);
864 return false;
865 }
866
867 ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT);
868 memcpy(buffer, tmpbuf, buflen);
869 kfree(tmpbuf);
870
871 return (ret == 0);
872}
873
874static bool
875brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
876{
877 struct bootrom_id_le id;
878 u32 chipid, chiprev;
879
880 brcmf_dbg(TRACE, "enter\n");
881
882 if (devinfo == NULL)
883 return false;
884
885 /* Check if firmware downloaded already by querying runtime ID */
886 id.chip = cpu_to_le32(0xDEAD);
887 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id,
888 sizeof(struct bootrom_id_le));
889
890 chipid = le32_to_cpu(id.chip);
891 chiprev = le32_to_cpu(id.chiprev);
892
893 if ((chipid & 0x4300) == 0x4300)
894 brcmf_dbg(INFO, "chip %x rev 0x%x\n", chipid, chiprev);
895 else
896 brcmf_dbg(INFO, "chip %d rev 0x%x\n", chipid, chiprev);
897 if (chipid == BRCMF_POSTBOOT_ID) {
898 brcmf_dbg(INFO, "firmware already downloaded\n");
899 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id,
900 sizeof(struct bootrom_id_le));
901 return false;
902 } else {
903 devinfo->bus_pub.attrib.devid = chipid;
904 devinfo->bus_pub.attrib.chiprev = chiprev;
905 }
906 return true;
907}
908
909static int
910brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
911{
912 struct bootrom_id_le id;
913 u16 wait = 0, wait_time;
914
915 brcmf_dbg(TRACE, "enter\n");
916
917 if (devinfo == NULL)
918 return -EINVAL;
919
920 /* Give dongle chance to boot */
921 wait_time = BRCMF_USB_DLIMAGE_SPINWAIT;
922 while (wait < BRCMF_USB_DLIMAGE_LIMIT) {
923 mdelay(wait_time);
924 wait += wait_time;
925 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
926 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id,
927 sizeof(struct bootrom_id_le));
928 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
929 break;
930 }
931
932 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
933 brcmf_dbg(INFO, "download done %d ms postboot chip 0x%x/rev 0x%x\n",
934 wait, le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
935
936 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id,
937 sizeof(struct bootrom_id_le));
938
939 /* XXX this wait may not be necessary */
940 mdelay(BRCMF_USB_RESETCFG_SPINWAIT);
941 return 0;
942 } else {
943 brcmf_dbg(ERROR, "Cannot talk to Dongle. Firmware is not UP, %d ms\n",
944 wait);
945 return -EINVAL;
946 }
947}
948
949
950static int
951brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
952{
953 int ret;
954
955 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
956 return -EINVAL;
957
958 /* Prepare the URB */
959 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
960 devinfo->tx_pipe, buffer, len,
961 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
962
963 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
964
965 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
966 if (ret) {
967 brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret);
968 return ret;
969 }
970 ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT);
971 return ret;
972}
973
974static int
975brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
976{
977 unsigned int sendlen, sent, dllen;
978 char *bulkchunk = NULL, *dlpos;
979 struct rdl_state_le state;
980 u32 rdlstate, rdlbytes;
981 int err = 0;
982 brcmf_dbg(TRACE, "fw %p, len %d\n", fw, fwlen);
983
984 bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC);
985 if (bulkchunk == NULL) {
986 err = -ENOMEM;
987 goto fail;
988 }
989
990 /* 1) Prepare USB boot loader for runtime image */
991 brcmf_usb_dl_cmd(devinfo, DL_START, &state,
992 sizeof(struct rdl_state_le));
993
994 rdlstate = le32_to_cpu(state.state);
995 rdlbytes = le32_to_cpu(state.bytes);
996
997 /* 2) Check we are in the Waiting state */
998 if (rdlstate != DL_WAITING) {
999 brcmf_dbg(ERROR, "Failed to DL_START\n");
1000 err = -EINVAL;
1001 goto fail;
1002 }
1003 sent = 0;
1004 dlpos = fw;
1005 dllen = fwlen;
1006
1007 /* Get chip id and rev */
1008 while (rdlbytes != dllen) {
1009 /* Wait until the usb device reports it received all
1010 * the bytes we sent */
1011 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
1012 if ((dllen-sent) < RDL_CHUNK)
1013 sendlen = dllen-sent;
1014 else
1015 sendlen = RDL_CHUNK;
1016
1017 /* simply avoid having to send a ZLP by ensuring we
1018 * never have an even
1019 * multiple of 64
1020 */
1021 if (!(sendlen % 64))
1022 sendlen -= 4;
1023
1024 /* send data */
1025 memcpy(bulkchunk, dlpos, sendlen);
1026 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
1027 sendlen)) {
1028 brcmf_dbg(ERROR, "send_bulk failed\n");
1029 err = -EINVAL;
1030 goto fail;
1031 }
1032
1033 dlpos += sendlen;
1034 sent += sendlen;
1035 }
1036 if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
1037 sizeof(struct rdl_state_le))) {
1038 brcmf_dbg(ERROR, "DL_GETSTATE Failed xxxx\n");
1039 err = -EINVAL;
1040 goto fail;
1041 }
1042
1043 rdlstate = le32_to_cpu(state.state);
1044 rdlbytes = le32_to_cpu(state.bytes);
1045
1046 /* restart if an error is reported */
1047 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
1048 brcmf_dbg(ERROR, "Bad Hdr or Bad CRC state %d\n",
1049 rdlstate);
1050 err = -EINVAL;
1051 goto fail;
1052 }
1053 }
1054
1055fail:
1056 kfree(bulkchunk);
1057 brcmf_dbg(TRACE, "err=%d\n", err);
1058 return err;
1059}
1060
1061static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
1062{
1063 int err;
1064
1065 brcmf_dbg(TRACE, "enter\n");
1066
1067 if (devinfo == NULL)
1068 return -EINVAL;
1069
1070 if (devinfo->bus_pub.attrib.devid == 0xDEAD)
1071 return -EINVAL;
1072
1073 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
1074 if (err == 0)
1075 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_DONE;
1076 else
1077 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_PENDING;
1078 brcmf_dbg(TRACE, "exit: err=%d\n", err);
1079
1080 return err;
1081}
1082
1083static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
1084{
1085 struct rdl_state_le state;
1086
1087 brcmf_dbg(TRACE, "enter\n");
1088 if (!devinfo)
1089 return -EINVAL;
1090
1091 if (devinfo->bus_pub.attrib.devid == 0xDEAD)
1092 return -EINVAL;
1093
1094 /* Check we are runnable */
1095 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
1096 sizeof(struct rdl_state_le));
1097
1098 /* Start the image */
1099 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
1100 if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state,
1101 sizeof(struct rdl_state_le)))
1102 return -ENODEV;
1103 if (brcmf_usb_resetcfg(devinfo))
1104 return -ENODEV;
1105 /* The Dongle may go for re-enumeration. */
1106 } else {
1107 brcmf_dbg(ERROR, "Dongle not runnable\n");
1108 return -EINVAL;
1109 }
1110 brcmf_dbg(TRACE, "exit\n");
1111 return 0;
1112}
1113
1114static bool brcmf_usb_chip_support(int chipid, int chiprev)
1115{
1116 switch(chipid) {
1117 case 43235:
1118 case 43236:
1119 case 43238:
1120 return (chiprev == 3);
1121 default:
1122 break;
1123 }
1124 return false;
1125}
1126
1127static int
1128brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1129{
1130 struct brcmf_usb_attrib *attr;
1131 int err;
1132
1133 brcmf_dbg(TRACE, "enter\n");
1134 if (devinfo == NULL)
1135 return -ENODEV;
1136
1137 attr = &devinfo->bus_pub.attrib;
1138
1139 if (!brcmf_usb_chip_support(attr->devid, attr->chiprev)) {
1140 brcmf_dbg(ERROR, "unsupported chip %d rev %d\n",
1141 attr->devid, attr->chiprev);
1142 return -EINVAL;
1143 }
1144
1145 if (!devinfo->image) {
1146 brcmf_dbg(ERROR, "No firmware!\n");
1147 return -ENOENT;
1148 }
1149
1150 err = brcmf_usb_dlstart(devinfo,
1151 devinfo->image, devinfo->image_len);
1152 if (err == 0)
1153 err = brcmf_usb_dlrun(devinfo);
1154 return err;
1155}
1156
1157
1158static void brcmf_usb_detach(const struct brcmf_usbdev *bus_pub)
1159{
1160 struct brcmf_usbdev_info *devinfo =
1161 (struct brcmf_usbdev_info *)bus_pub;
1162
1163 brcmf_dbg(TRACE, "devinfo %p\n", devinfo);
1164
1165 /* store the image globally */
1166 g_image.data = devinfo->image;
1167 g_image.len = devinfo->image_len;
1168
1169 /* free the URBS */
1170 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1171 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1172
1173 usb_free_urb(devinfo->intr_urb);
1174 usb_free_urb(devinfo->ctl_urb);
1175 usb_free_urb(devinfo->bulk_urb);
1176
1177 kfree(devinfo->tx_reqs);
1178 kfree(devinfo->rx_reqs);
1179 kfree(devinfo);
1180}
1181
1182#define TRX_MAGIC 0x30524448 /* "HDR0" */
1183#define TRX_VERSION 1 /* Version 1 */
1184#define TRX_MAX_LEN 0x3B0000 /* Max length */
1185#define TRX_NO_HEADER 1 /* Do not write TRX header */
1186#define TRX_MAX_OFFSET 3 /* Max number of individual files */
1187#define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */
1188
1189struct trx_header_le {
1190 __le32 magic; /* "HDR0" */
1191 __le32 len; /* Length of file including header */
1192 __le32 crc32; /* CRC from flag_version to end of file */
1193 __le32 flag_version; /* 0:15 flags, 16:31 version */
1194 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
1195 * header */
1196};
1197
1198static int check_file(const u8 *headers)
1199{
1200 struct trx_header_le *trx;
1201 int actual_len = -1;
1202
1203 /* Extract trx header */
1204 trx = (struct trx_header_le *) headers;
1205 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1206 return -1;
1207
1208 headers += sizeof(struct trx_header_le);
1209
1210 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1211 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1212 return actual_len + sizeof(struct trx_header_le);
1213 }
1214 return -1;
1215}
1216
1217static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo)
1218{
1219 s8 *fwname;
1220 const struct firmware *fw;
1221 int err;
1222
1223 devinfo->image = g_image.data;
1224 devinfo->image_len = g_image.len;
1225
1226 /*
1227 * if we have an image we can leave here.
1228 */
1229 if (devinfo->image)
1230 return 0;
1231
1232 fwname = BRCMF_USB_FW_NAME;
1233
1234 err = request_firmware(&fw, fwname, devinfo->dev);
1235 if (!fw) {
1236 brcmf_dbg(ERROR, "fail to request firmware %s\n", fwname);
1237 return err;
1238 }
1239 if (check_file(fw->data) < 0) {
1240 brcmf_dbg(ERROR, "invalid firmware %s\n", fwname);
1241 return -EINVAL;
1242 }
1243
1244 devinfo->image = kmalloc(fw->size, GFP_ATOMIC); /* plus nvram */
1245 if (!devinfo->image)
1246 return -ENOMEM;
1247
1248 memcpy(devinfo->image, fw->data, fw->size);
1249 devinfo->image_len = fw->size;
1250
1251 release_firmware(fw);
1252 return 0;
1253}
1254
1255
1256static
1257struct brcmf_usbdev *brcmf_usb_attach(int nrxq, int ntxq, struct device *dev)
1258{
1259 struct brcmf_usbdev_info *devinfo;
1260
1261 devinfo = kzalloc(sizeof(struct brcmf_usbdev_info), GFP_ATOMIC);
1262 if (devinfo == NULL)
1263 return NULL;
1264
1265 devinfo->bus_pub.nrxq = nrxq;
1266 devinfo->rx_low_watermark = nrxq / 2;
1267 devinfo->bus_pub.devinfo = devinfo;
1268 devinfo->bus_pub.ntxq = ntxq;
1269
1270 /* flow control when too many tx urbs posted */
1271 devinfo->tx_low_watermark = ntxq / 4;
1272 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1273 devinfo->dev = dev;
1274 devinfo->usbdev = usbdev_probe_info.usb;
1275 devinfo->tx_pipe = usbdev_probe_info.tx_pipe;
1276 devinfo->rx_pipe = usbdev_probe_info.rx_pipe;
1277 devinfo->rx_pipe2 = usbdev_probe_info.rx_pipe2;
1278 devinfo->intr_pipe = usbdev_probe_info.intr_pipe;
1279
1280 devinfo->interval = usbdev_probe_info.interval;
1281 devinfo->intr_size = usbdev_probe_info.intr_size;
1282
1283 memcpy(&devinfo->probe_info, &usbdev_probe_info,
1284 sizeof(struct brcmf_usb_probe_info));
1285 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1286
1287 /* Initialize other structure content */
1288 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1289
1290 /* Initialize the spinlocks */
1291 spin_lock_init(&devinfo->qlock);
1292
1293 INIT_LIST_HEAD(&devinfo->rx_freeq);
1294 INIT_LIST_HEAD(&devinfo->rx_postq);
1295
1296 INIT_LIST_HEAD(&devinfo->tx_freeq);
1297 INIT_LIST_HEAD(&devinfo->tx_postq);
1298
1299 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1300 if (!devinfo->rx_reqs)
1301 goto error;
1302
1303 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1304 if (!devinfo->tx_reqs)
1305 goto error;
1306
1307 devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC);
1308 if (!devinfo->intr_urb) {
1309 brcmf_dbg(ERROR, "usb_alloc_urb (intr) failed\n");
1310 goto error;
1311 }
1312 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1313 if (!devinfo->ctl_urb) {
1314 brcmf_dbg(ERROR, "usb_alloc_urb (ctl) failed\n");
1315 goto error;
1316 }
1317 devinfo->rxctl_deferrespok = 0;
1318
1319 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1320 if (!devinfo->bulk_urb) {
1321 brcmf_dbg(ERROR, "usb_alloc_urb (bulk) failed\n");
1322 goto error;
1323 }
1324
1325 init_waitqueue_head(&devinfo->wait);
1326 if (!brcmf_usb_dlneeded(devinfo))
1327 return &devinfo->bus_pub;
1328
1329 brcmf_dbg(TRACE, "start fw downloading\n");
1330 if (brcmf_usb_get_fw(devinfo))
1331 goto error;
1332
1333 if (brcmf_usb_fw_download(devinfo))
1334 goto error;
1335
1336 return &devinfo->bus_pub;
1337
1338error:
1339 brcmf_dbg(ERROR, "failed!\n");
1340 brcmf_usb_detach(&devinfo->bus_pub);
1341 return NULL;
1342}
1343
1344static int brcmf_usb_probe_cb(struct device *dev, const char *desc,
1345 u32 bustype, u32 hdrlen)
1346{
1347 struct brcmf_bus *bus = NULL;
1348 struct brcmf_usbdev *bus_pub = NULL;
1349 int ret;
1350
1351
1352 bus_pub = brcmf_usb_attach(BRCMF_USB_NRXQ, BRCMF_USB_NTXQ, dev);
1353 if (!bus_pub) {
1354 ret = -ENODEV;
1355 goto fail;
1356 }
1357
1358 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1359 if (!bus) {
1360 ret = -ENOMEM;
1361 goto fail;
1362 }
1363
1364 bus_pub->bus = bus;
1365 bus->brcmf_bus_txdata = brcmf_usb_tx;
1366 bus->brcmf_bus_init = brcmf_usb_up;
1367 bus->brcmf_bus_stop = brcmf_usb_down;
1368 bus->brcmf_bus_txctl = brcmf_usb_tx_ctlpkt;
1369 bus->brcmf_bus_rxctl = brcmf_usb_rx_ctlpkt;
1370 bus->type = bustype;
1371 bus->bus_priv.usb = bus_pub;
1372 dev_set_drvdata(dev, bus);
1373
1374 /* Attach to the common driver interface */
1375 ret = brcmf_attach(hdrlen, dev);
1376 if (ret) {
1377 brcmf_dbg(ERROR, "dhd_attach failed\n");
1378 goto fail;
1379 }
1380
1381 ret = brcmf_bus_start(dev);
1382 if (ret == -ENOLINK) {
1383 brcmf_dbg(ERROR, "dongle is not responding\n");
1384 brcmf_detach(dev);
1385 goto fail;
1386 }
1387
1388 /* add interface and open for business */
1389 ret = brcmf_add_if(dev, 0, "wlan%d", NULL);
1390 if (ret) {
1391 brcmf_dbg(ERROR, "Add primary net device interface failed!!\n");
1392 brcmf_detach(dev);
1393 goto fail;
1394 }
1395
1396 return 0;
1397fail:
1398 /* Release resources in reverse order */
1399 if (bus_pub)
1400 brcmf_usb_detach(bus_pub);
1401 kfree(bus);
1402 return ret;
1403}
1404
1405static void
1406brcmf_usb_disconnect_cb(struct brcmf_usbdev *bus_pub)
1407{
1408 if (!bus_pub)
1409 return;
1410 brcmf_dbg(TRACE, "enter: bus_pub %p\n", bus_pub);
1411
1412 brcmf_detach(bus_pub->devinfo->dev);
1413 kfree(bus_pub->bus);
1414 brcmf_usb_detach(bus_pub);
1415
1416}
1417
1418static int
1419brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1420{
1421 int ep;
1422 struct usb_endpoint_descriptor *endpoint;
1423 int ret = 0;
1424 struct usb_device *usb = interface_to_usbdev(intf);
1425 int num_of_eps;
1426 u8 endpoint_num;
1427
1428 brcmf_dbg(TRACE, "enter\n");
1429
1430 usbdev_probe_info.usb = usb;
1431 usbdev_probe_info.intf = intf;
1432
1433 if (id != NULL) {
1434 usbdev_probe_info.vid = id->idVendor;
1435 usbdev_probe_info.pid = id->idProduct;
1436 }
1437
1438 usb_set_intfdata(intf, &usbdev_probe_info);
1439
1440 /* Check that the device supports only one configuration */
1441 if (usb->descriptor.bNumConfigurations != 1) {
1442 ret = -1;
1443 goto fail;
1444 }
1445
1446 if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
1447 ret = -1;
1448 goto fail;
1449 }
1450
1451 /*
1452 * Only the BDC interface configuration is supported:
1453 * Device class: USB_CLASS_VENDOR_SPEC
1454 * if0 class: USB_CLASS_VENDOR_SPEC
1455 * if0/ep0: control
1456 * if0/ep1: bulk in
1457 * if0/ep2: bulk out (ok if swapped with bulk in)
1458 */
1459 if (CONFIGDESC(usb)->bNumInterfaces != 1) {
1460 ret = -1;
1461 goto fail;
1462 }
1463
1464 /* Check interface */
1465 if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
1466 IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 ||
1467 IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) {
1468 brcmf_dbg(ERROR, "invalid control interface: class %d, subclass %d, proto %d\n",
1469 IFDESC(usb, CONTROL_IF).bInterfaceClass,
1470 IFDESC(usb, CONTROL_IF).bInterfaceSubClass,
1471 IFDESC(usb, CONTROL_IF).bInterfaceProtocol);
1472 ret = -1;
1473 goto fail;
1474 }
1475
1476 /* Check control endpoint */
1477 endpoint = &IFEPDESC(usb, CONTROL_IF, 0);
1478 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1479 != USB_ENDPOINT_XFER_INT) {
1480 brcmf_dbg(ERROR, "invalid control endpoint %d\n",
1481 endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK);
1482 ret = -1;
1483 goto fail;
1484 }
1485
1486 endpoint_num = endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
1487 usbdev_probe_info.intr_pipe = usb_rcvintpipe(usb, endpoint_num);
1488
1489 usbdev_probe_info.rx_pipe = 0;
1490 usbdev_probe_info.rx_pipe2 = 0;
1491 usbdev_probe_info.tx_pipe = 0;
1492 num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1;
1493
1494 /* Check data endpoints and get pipes */
1495 for (ep = 1; ep <= num_of_eps; ep++) {
1496 endpoint = &IFEPDESC(usb, BULK_IF, ep);
1497 if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
1498 USB_ENDPOINT_XFER_BULK) {
1499 brcmf_dbg(ERROR, "invalid data endpoint %d\n", ep);
1500 ret = -1;
1501 goto fail;
1502 }
1503
1504 endpoint_num = endpoint->bEndpointAddress &
1505 USB_ENDPOINT_NUMBER_MASK;
1506 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
1507 == USB_DIR_IN) {
1508 if (!usbdev_probe_info.rx_pipe) {
1509 usbdev_probe_info.rx_pipe =
1510 usb_rcvbulkpipe(usb, endpoint_num);
1511 } else {
1512 usbdev_probe_info.rx_pipe2 =
1513 usb_rcvbulkpipe(usb, endpoint_num);
1514 }
1515 } else {
1516 usbdev_probe_info.tx_pipe =
1517 usb_sndbulkpipe(usb, endpoint_num);
1518 }
1519 }
1520
1521 /* Allocate interrupt URB and data buffer */
1522 /* RNDIS says 8-byte intr, our old drivers used 4-byte */
1523 if (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == cpu_to_le16(16))
1524 usbdev_probe_info.intr_size = 8;
1525 else
1526 usbdev_probe_info.intr_size = 4;
1527
1528 usbdev_probe_info.interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval;
1529
1530 usbdev_probe_info.device_speed = usb->speed;
1531 if (usb->speed == USB_SPEED_HIGH)
1532 brcmf_dbg(INFO, "Broadcom high speed USB wireless device detected\n");
1533 else
1534 brcmf_dbg(INFO, "Broadcom full speed USB wireless device detected\n");
1535
1536 ret = brcmf_usb_probe_cb(&usb->dev, "", USB_BUS, 0);
1537 if (ret)
1538 goto fail;
1539
1540 /* Success */
1541 return 0;
1542
1543fail:
1544 brcmf_dbg(ERROR, "failed with errno %d\n", ret);
1545 usb_set_intfdata(intf, NULL);
1546 return ret;
1547
1548}
1549
1550static void
1551brcmf_usb_disconnect(struct usb_interface *intf)
1552{
1553 struct usb_device *usb = interface_to_usbdev(intf);
1554
1555 brcmf_dbg(TRACE, "enter\n");
1556 brcmf_usb_disconnect_cb(brcmf_usb_get_buspub(&usb->dev));
1557 usb_set_intfdata(intf, NULL);
1558}
1559
1560/*
1561 * only need to signal the bus being down and update the suspend state.
1562 */
1563static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1564{
1565 struct usb_device *usb = interface_to_usbdev(intf);
1566 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1567
1568 brcmf_dbg(TRACE, "enter\n");
1569 devinfo->bus_pub.state = BCMFMAC_USB_STATE_DOWN;
1570 devinfo->suspend_state = USBOS_SUSPEND_STATE_SUSPENDED;
1571 return 0;
1572}
1573
1574/*
1575 * mark suspend state active and crank up the bus.
1576 */
1577static int brcmf_usb_resume(struct usb_interface *intf)
1578{
1579 struct usb_device *usb = interface_to_usbdev(intf);
1580 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1581
1582 brcmf_dbg(TRACE, "enter\n");
1583 devinfo->suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE;
1584 brcmf_bus_start(&usb->dev);
1585 return 0;
1586}
1587
1588#define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c
1589#define BRCMF_USB_DEVICE_ID_43236 0xbd17
1590#define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc
1591
1592static struct usb_device_id brcmf_usb_devid_table[] = {
1593 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) },
1594 /* special entry for device with firmware loaded and running */
1595 { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) },
1596 { }
1597};
1598MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1599MODULE_FIRMWARE(BRCMF_USB_FW_NAME);
1600
1601/* TODO: suspend and resume entries */
1602static struct usb_driver brcmf_usbdrvr = {
1603 .name = KBUILD_MODNAME,
1604 .probe = brcmf_usb_probe,
1605 .disconnect = brcmf_usb_disconnect,
1606 .id_table = brcmf_usb_devid_table,
1607 .suspend = brcmf_usb_suspend,
1608 .resume = brcmf_usb_resume,
1609 .supports_autosuspend = 1
1610};
1611
1612void brcmf_usb_exit(void)
1613{
1614 usb_deregister(&brcmf_usbdrvr);
1615 kfree(g_image.data);
1616 g_image.data = NULL;
1617 g_image.len = 0;
1618}
1619
1620int brcmf_usb_init(void)
1621{
1622 return usb_register(&brcmf_usbdrvr);
1623}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 23:56:02 -0500