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 <brcm_hw_ids.h>
25 #include <brcmu_wifi.h>
26 #include "bus.h"
27 #include "debug.h"
28 #include "firmware.h"
29 #include "usb.h"
30
31
32 #define IOCTL_RESP_TIMEOUT 2000
33
34 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */
35 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10
36
37 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle
38 has boot up */
39 #define BRCMF_USB_NRXQ 50
40 #define BRCMF_USB_NTXQ 50
41
42 #define BRCMF_USB_CBCTL_WRITE 0
43 #define BRCMF_USB_CBCTL_READ 1
44 #define BRCMF_USB_MAX_PKT_SIZE 1600
45
46 #define BRCMF_USB_43143_FW_NAME "brcm/brcmfmac43143.bin"
47 #define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin"
48 #define BRCMF_USB_43242_FW_NAME "brcm/brcmfmac43242a.bin"
49 #define BRCMF_USB_43569_FW_NAME "brcm/brcmfmac43569.bin"
50
51 #define TRX_MAGIC 0x30524448 /* "HDR0" */
52 #define TRX_MAX_OFFSET 3 /* Max number of file offsets */
53 #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */
54 #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */
55 #define TRX_OFFSETS_DLFWLEN_IDX 0
56
57 /* Control messages: bRequest values */
58 #define DL_GETSTATE 0 /* returns the rdl_state_t struct */
59 #define DL_CHECK_CRC 1 /* currently unused */
60 #define DL_GO 2 /* execute downloaded image */
61 #define DL_START 3 /* initialize dl state */
62 #define DL_REBOOT 4 /* reboot the device in 2 seconds */
63 #define DL_GETVER 5 /* returns the bootrom_id_t struct */
64 #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset
65 * event to occur in 2 seconds. It is the
66 * responsibility of the downloaded code to
67 * clear this event
68 */
69 #define DL_EXEC 7 /* jump to a supplied address */
70 #define DL_RESETCFG 8 /* To support single enum on dongle
71 * - Not used by bootloader
72 */
73 #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup
74 * if resp unavailable
75 */
76
77 /* states */
78 #define DL_WAITING 0 /* waiting to rx first pkt */
79 #define DL_READY 1 /* hdr was good, waiting for more of the
80 * compressed image
81 */
82 #define DL_BAD_HDR 2 /* hdr was corrupted */
83 #define DL_BAD_CRC 3 /* compressed image was corrupted */
84 #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */
85 #define DL_START_FAIL 5 /* failed to initialize correctly */
86 #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM
87 * value
88 */
89 #define DL_IMAGE_TOOBIG 7 /* firmware image too big */
90
91
92 struct trx_header_le {
93 __le32 magic; /* "HDR0" */
94 __le32 len; /* Length of file including header */
95 __le32 crc32; /* CRC from flag_version to end of file */
96 __le32 flag_version; /* 0:15 flags, 16:31 version */
97 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
98 * header
99 */
100 };
101
102 struct rdl_state_le {
103 __le32 state;
104 __le32 bytes;
105 };
106
107 struct bootrom_id_le {
108 __le32 chip; /* Chip id */
109 __le32 chiprev; /* Chip rev */
110 __le32 ramsize; /* Size of RAM */
111 __le32 remapbase; /* Current remap base address */
112 __le32 boardtype; /* Type of board */
113 __le32 boardrev; /* Board revision */
114 };
115
116 struct brcmf_usb_image {
117 struct list_head list;
118 s8 *fwname;
119 u8 *image;
120 int image_len;
121 };
122
123 struct brcmf_usbdev_info {
124 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */
125 spinlock_t qlock;
126 struct list_head rx_freeq;
127 struct list_head rx_postq;
128 struct list_head tx_freeq;
129 struct list_head tx_postq;
130 uint rx_pipe, tx_pipe;
131
132 int rx_low_watermark;
133 int tx_low_watermark;
134 int tx_high_watermark;
135 int tx_freecount;
136 bool tx_flowblock;
137 spinlock_t tx_flowblock_lock;
138
139 struct brcmf_usbreq *tx_reqs;
140 struct brcmf_usbreq *rx_reqs;
141
142 const u8 *image; /* buffer for combine fw and nvram */
143 int image_len;
144
145 struct usb_device *usbdev;
146 struct device *dev;
147 struct mutex dev_init_lock;
148
149 int ctl_in_pipe, ctl_out_pipe;
150 struct urb *ctl_urb; /* URB for control endpoint */
151 struct usb_ctrlrequest ctl_write;
152 struct usb_ctrlrequest ctl_read;
153 u32 ctl_urb_actual_length;
154 int ctl_urb_status;
155 int ctl_completed;
156 wait_queue_head_t ioctl_resp_wait;
157 ulong ctl_op;
158 u8 ifnum;
159
160 struct urb *bulk_urb; /* used for FW download */
161
162 bool wowl_enabled;
163 };
164
165 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
166 struct brcmf_usbreq *req);
167
brcmf_usb_get_buspub(struct device * dev)168 static 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
brcmf_usb_get_businfo(struct device * dev)174 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
175 {
176 return brcmf_usb_get_buspub(dev)->devinfo;
177 }
178
brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info * devinfo)179 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo)
180 {
181 return wait_event_timeout(devinfo->ioctl_resp_wait,
182 devinfo->ctl_completed,
183 msecs_to_jiffies(IOCTL_RESP_TIMEOUT));
184 }
185
brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info * devinfo)186 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
187 {
188 if (waitqueue_active(&devinfo->ioctl_resp_wait))
189 wake_up(&devinfo->ioctl_resp_wait);
190 }
191
192 static void
brcmf_usb_ctl_complete(struct brcmf_usbdev_info * devinfo,int type,int status)193 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
194 {
195 brcmf_dbg(USB, "Enter, status=%d\n", status);
196
197 if (unlikely(devinfo == NULL))
198 return;
199
200 if (type == BRCMF_USB_CBCTL_READ) {
201 if (status == 0)
202 devinfo->bus_pub.stats.rx_ctlpkts++;
203 else
204 devinfo->bus_pub.stats.rx_ctlerrs++;
205 } else if (type == BRCMF_USB_CBCTL_WRITE) {
206 if (status == 0)
207 devinfo->bus_pub.stats.tx_ctlpkts++;
208 else
209 devinfo->bus_pub.stats.tx_ctlerrs++;
210 }
211
212 devinfo->ctl_urb_status = status;
213 devinfo->ctl_completed = true;
214 brcmf_usb_ioctl_resp_wake(devinfo);
215 }
216
217 static void
brcmf_usb_ctlread_complete(struct urb * urb)218 brcmf_usb_ctlread_complete(struct urb *urb)
219 {
220 struct brcmf_usbdev_info *devinfo =
221 (struct brcmf_usbdev_info *)urb->context;
222
223 brcmf_dbg(USB, "Enter\n");
224 devinfo->ctl_urb_actual_length = urb->actual_length;
225 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
226 urb->status);
227 }
228
229 static void
brcmf_usb_ctlwrite_complete(struct urb * urb)230 brcmf_usb_ctlwrite_complete(struct urb *urb)
231 {
232 struct brcmf_usbdev_info *devinfo =
233 (struct brcmf_usbdev_info *)urb->context;
234
235 brcmf_dbg(USB, "Enter\n");
236 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
237 urb->status);
238 }
239
240 static int
brcmf_usb_send_ctl(struct brcmf_usbdev_info * devinfo,u8 * buf,int len)241 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
242 {
243 int ret;
244 u16 size;
245
246 brcmf_dbg(USB, "Enter\n");
247 if (devinfo == NULL || buf == NULL ||
248 len == 0 || devinfo->ctl_urb == NULL)
249 return -EINVAL;
250
251 size = len;
252 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
253 devinfo->ctl_urb->transfer_buffer_length = size;
254 devinfo->ctl_urb_status = 0;
255 devinfo->ctl_urb_actual_length = 0;
256
257 usb_fill_control_urb(devinfo->ctl_urb,
258 devinfo->usbdev,
259 devinfo->ctl_out_pipe,
260 (unsigned char *) &devinfo->ctl_write,
261 buf, size,
262 (usb_complete_t)brcmf_usb_ctlwrite_complete,
263 devinfo);
264
265 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
266 if (ret < 0)
267 brcmf_err("usb_submit_urb failed %d\n", ret);
268
269 return ret;
270 }
271
272 static int
brcmf_usb_recv_ctl(struct brcmf_usbdev_info * devinfo,u8 * buf,int len)273 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
274 {
275 int ret;
276 u16 size;
277
278 brcmf_dbg(USB, "Enter\n");
279 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
280 || (devinfo->ctl_urb == NULL))
281 return -EINVAL;
282
283 size = len;
284 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
285 devinfo->ctl_urb->transfer_buffer_length = size;
286
287 devinfo->ctl_read.bRequestType = USB_DIR_IN
288 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
289 devinfo->ctl_read.bRequest = 1;
290
291 usb_fill_control_urb(devinfo->ctl_urb,
292 devinfo->usbdev,
293 devinfo->ctl_in_pipe,
294 (unsigned char *) &devinfo->ctl_read,
295 buf, size,
296 (usb_complete_t)brcmf_usb_ctlread_complete,
297 devinfo);
298
299 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
300 if (ret < 0)
301 brcmf_err("usb_submit_urb failed %d\n", ret);
302
303 return ret;
304 }
305
brcmf_usb_tx_ctlpkt(struct device * dev,u8 * buf,u32 len)306 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
307 {
308 int err = 0;
309 int timeout = 0;
310 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
311
312 brcmf_dbg(USB, "Enter\n");
313 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
314 return -EIO;
315
316 if (test_and_set_bit(0, &devinfo->ctl_op))
317 return -EIO;
318
319 devinfo->ctl_completed = false;
320 err = brcmf_usb_send_ctl(devinfo, buf, len);
321 if (err) {
322 brcmf_err("fail %d bytes: %d\n", err, len);
323 clear_bit(0, &devinfo->ctl_op);
324 return err;
325 }
326 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
327 clear_bit(0, &devinfo->ctl_op);
328 if (!timeout) {
329 brcmf_err("Txctl wait timed out\n");
330 err = -EIO;
331 }
332 return err;
333 }
334
brcmf_usb_rx_ctlpkt(struct device * dev,u8 * buf,u32 len)335 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
336 {
337 int err = 0;
338 int timeout = 0;
339 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
340
341 brcmf_dbg(USB, "Enter\n");
342 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
343 return -EIO;
344
345 if (test_and_set_bit(0, &devinfo->ctl_op))
346 return -EIO;
347
348 devinfo->ctl_completed = false;
349 err = brcmf_usb_recv_ctl(devinfo, buf, len);
350 if (err) {
351 brcmf_err("fail %d bytes: %d\n", err, len);
352 clear_bit(0, &devinfo->ctl_op);
353 return err;
354 }
355 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
356 err = devinfo->ctl_urb_status;
357 clear_bit(0, &devinfo->ctl_op);
358 if (!timeout) {
359 brcmf_err("rxctl wait timed out\n");
360 err = -EIO;
361 }
362 if (!err)
363 return devinfo->ctl_urb_actual_length;
364 else
365 return err;
366 }
367
brcmf_usb_deq(struct brcmf_usbdev_info * devinfo,struct list_head * q,int * counter)368 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
369 struct list_head *q, int *counter)
370 {
371 unsigned long flags;
372 struct brcmf_usbreq *req;
373 spin_lock_irqsave(&devinfo->qlock, flags);
374 if (list_empty(q)) {
375 spin_unlock_irqrestore(&devinfo->qlock, flags);
376 return NULL;
377 }
378 req = list_entry(q->next, struct brcmf_usbreq, list);
379 list_del_init(q->next);
380 if (counter)
381 (*counter)--;
382 spin_unlock_irqrestore(&devinfo->qlock, flags);
383 return req;
384
385 }
386
brcmf_usb_enq(struct brcmf_usbdev_info * devinfo,struct list_head * q,struct brcmf_usbreq * req,int * counter)387 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
388 struct list_head *q, struct brcmf_usbreq *req,
389 int *counter)
390 {
391 unsigned long flags;
392 spin_lock_irqsave(&devinfo->qlock, flags);
393 list_add_tail(&req->list, q);
394 if (counter)
395 (*counter)++;
396 spin_unlock_irqrestore(&devinfo->qlock, flags);
397 }
398
399 static struct brcmf_usbreq *
brcmf_usbdev_qinit(struct list_head * q,int qsize)400 brcmf_usbdev_qinit(struct list_head *q, int qsize)
401 {
402 int i;
403 struct brcmf_usbreq *req, *reqs;
404
405 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC);
406 if (reqs == NULL)
407 return NULL;
408
409 req = reqs;
410
411 for (i = 0; i < qsize; i++) {
412 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
413 if (!req->urb)
414 goto fail;
415
416 INIT_LIST_HEAD(&req->list);
417 list_add_tail(&req->list, q);
418 req++;
419 }
420 return reqs;
421 fail:
422 brcmf_err("fail!\n");
423 while (!list_empty(q)) {
424 req = list_entry(q->next, struct brcmf_usbreq, list);
425 if (req)
426 usb_free_urb(req->urb);
427 list_del(q->next);
428 }
429 return NULL;
430
431 }
432
brcmf_usb_free_q(struct list_head * q,bool pending)433 static void brcmf_usb_free_q(struct list_head *q, bool pending)
434 {
435 struct brcmf_usbreq *req, *next;
436 int i = 0;
437 list_for_each_entry_safe(req, next, q, list) {
438 if (!req->urb) {
439 brcmf_err("bad req\n");
440 break;
441 }
442 i++;
443 if (pending) {
444 usb_kill_urb(req->urb);
445 } else {
446 usb_free_urb(req->urb);
447 list_del_init(&req->list);
448 }
449 }
450 }
451
brcmf_usb_del_fromq(struct brcmf_usbdev_info * devinfo,struct brcmf_usbreq * req)452 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
453 struct brcmf_usbreq *req)
454 {
455 unsigned long flags;
456
457 spin_lock_irqsave(&devinfo->qlock, flags);
458 list_del_init(&req->list);
459 spin_unlock_irqrestore(&devinfo->qlock, flags);
460 }
461
462
brcmf_usb_tx_complete(struct urb * urb)463 static void brcmf_usb_tx_complete(struct urb *urb)
464 {
465 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
466 struct brcmf_usbdev_info *devinfo = req->devinfo;
467 unsigned long flags;
468
469 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
470 req->skb);
471 brcmf_usb_del_fromq(devinfo, req);
472
473 brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0);
474 req->skb = NULL;
475 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount);
476 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
477 if (devinfo->tx_freecount > devinfo->tx_high_watermark &&
478 devinfo->tx_flowblock) {
479 brcmf_txflowblock(devinfo->dev, false);
480 devinfo->tx_flowblock = false;
481 }
482 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
483 }
484
brcmf_usb_rx_complete(struct urb * urb)485 static void brcmf_usb_rx_complete(struct urb *urb)
486 {
487 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
488 struct brcmf_usbdev_info *devinfo = req->devinfo;
489 struct sk_buff *skb;
490
491 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
492 brcmf_usb_del_fromq(devinfo, req);
493 skb = req->skb;
494 req->skb = NULL;
495
496 /* zero lenght packets indicate usb "failure". Do not refill */
497 if (urb->status != 0 || !urb->actual_length) {
498 brcmu_pkt_buf_free_skb(skb);
499 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
500 return;
501 }
502
503 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
504 skb_put(skb, urb->actual_length);
505 brcmf_rx_frame(devinfo->dev, skb);
506 brcmf_usb_rx_refill(devinfo, req);
507 } else {
508 brcmu_pkt_buf_free_skb(skb);
509 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
510 }
511 return;
512
513 }
514
brcmf_usb_rx_refill(struct brcmf_usbdev_info * devinfo,struct brcmf_usbreq * req)515 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
516 struct brcmf_usbreq *req)
517 {
518 struct sk_buff *skb;
519 int ret;
520
521 if (!req || !devinfo)
522 return;
523
524 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
525 if (!skb) {
526 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
527 return;
528 }
529 req->skb = skb;
530
531 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
532 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
533 req);
534 req->devinfo = devinfo;
535 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL);
536
537 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
538 if (ret) {
539 brcmf_usb_del_fromq(devinfo, req);
540 brcmu_pkt_buf_free_skb(req->skb);
541 req->skb = NULL;
542 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
543 }
544 return;
545 }
546
brcmf_usb_rx_fill_all(struct brcmf_usbdev_info * devinfo)547 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
548 {
549 struct brcmf_usbreq *req;
550
551 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
552 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state);
553 return;
554 }
555 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL)
556 brcmf_usb_rx_refill(devinfo, req);
557 }
558
559 static void
brcmf_usb_state_change(struct brcmf_usbdev_info * devinfo,int state)560 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
561 {
562 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
563 int old_state;
564
565 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
566 devinfo->bus_pub.state, state);
567
568 if (devinfo->bus_pub.state == state)
569 return;
570
571 old_state = devinfo->bus_pub.state;
572 devinfo->bus_pub.state = state;
573
574 /* update state of upper layer */
575 if (state == BRCMFMAC_USB_STATE_DOWN) {
576 brcmf_dbg(USB, "DBUS is down\n");
577 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN);
578 } else if (state == BRCMFMAC_USB_STATE_UP) {
579 brcmf_dbg(USB, "DBUS is up\n");
580 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP);
581 } else {
582 brcmf_dbg(USB, "DBUS current state=%d\n", state);
583 }
584 }
585
brcmf_usb_tx(struct device * dev,struct sk_buff * skb)586 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
587 {
588 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
589 struct brcmf_usbreq *req;
590 int ret;
591 unsigned long flags;
592
593 brcmf_dbg(USB, "Enter, skb=%p\n", skb);
594 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
595 ret = -EIO;
596 goto fail;
597 }
598
599 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
600 &devinfo->tx_freecount);
601 if (!req) {
602 brcmf_err("no req to send\n");
603 ret = -ENOMEM;
604 goto fail;
605 }
606
607 req->skb = skb;
608 req->devinfo = devinfo;
609 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
610 skb->data, skb->len, brcmf_usb_tx_complete, req);
611 req->urb->transfer_flags |= URB_ZERO_PACKET;
612 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
613 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
614 if (ret) {
615 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
616 brcmf_usb_del_fromq(devinfo, req);
617 req->skb = NULL;
618 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
619 &devinfo->tx_freecount);
620 goto fail;
621 }
622
623 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
624 if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
625 !devinfo->tx_flowblock) {
626 brcmf_txflowblock(dev, true);
627 devinfo->tx_flowblock = true;
628 }
629 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
630 return 0;
631
632 fail:
633 return ret;
634 }
635
636
brcmf_usb_up(struct device * dev)637 static int brcmf_usb_up(struct device *dev)
638 {
639 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
640
641 brcmf_dbg(USB, "Enter\n");
642 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
643 return 0;
644
645 /* Success, indicate devinfo is fully up */
646 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
647
648 if (devinfo->ctl_urb) {
649 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
650 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
651
652 /* CTL Write */
653 devinfo->ctl_write.bRequestType =
654 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
655 devinfo->ctl_write.bRequest = 0;
656 devinfo->ctl_write.wValue = cpu_to_le16(0);
657 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum);
658
659 /* CTL Read */
660 devinfo->ctl_read.bRequestType =
661 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
662 devinfo->ctl_read.bRequest = 1;
663 devinfo->ctl_read.wValue = cpu_to_le16(0);
664 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum);
665 }
666 brcmf_usb_rx_fill_all(devinfo);
667 return 0;
668 }
669
brcmf_cancel_all_urbs(struct brcmf_usbdev_info * devinfo)670 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo)
671 {
672 if (devinfo->ctl_urb)
673 usb_kill_urb(devinfo->ctl_urb);
674 if (devinfo->bulk_urb)
675 usb_kill_urb(devinfo->bulk_urb);
676 brcmf_usb_free_q(&devinfo->tx_postq, true);
677 brcmf_usb_free_q(&devinfo->rx_postq, true);
678 }
679
brcmf_usb_down(struct device * dev)680 static void brcmf_usb_down(struct device *dev)
681 {
682 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
683
684 brcmf_dbg(USB, "Enter\n");
685 if (devinfo == NULL)
686 return;
687
688 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
689 return;
690
691 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
692
693 brcmf_cancel_all_urbs(devinfo);
694 }
695
696 static void
brcmf_usb_sync_complete(struct urb * urb)697 brcmf_usb_sync_complete(struct urb *urb)
698 {
699 struct brcmf_usbdev_info *devinfo =
700 (struct brcmf_usbdev_info *)urb->context;
701
702 devinfo->ctl_completed = true;
703 brcmf_usb_ioctl_resp_wake(devinfo);
704 }
705
brcmf_usb_dl_cmd(struct brcmf_usbdev_info * devinfo,u8 cmd,void * buffer,int buflen)706 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
707 void *buffer, int buflen)
708 {
709 int ret;
710 char *tmpbuf;
711 u16 size;
712
713 if ((!devinfo) || (devinfo->ctl_urb == NULL))
714 return -EINVAL;
715
716 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
717 if (!tmpbuf)
718 return -ENOMEM;
719
720 size = buflen;
721 devinfo->ctl_urb->transfer_buffer_length = size;
722
723 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
724 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
725 USB_RECIP_INTERFACE;
726 devinfo->ctl_read.bRequest = cmd;
727
728 usb_fill_control_urb(devinfo->ctl_urb,
729 devinfo->usbdev,
730 usb_rcvctrlpipe(devinfo->usbdev, 0),
731 (unsigned char *) &devinfo->ctl_read,
732 (void *) tmpbuf, size,
733 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
734
735 devinfo->ctl_completed = false;
736 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
737 if (ret < 0) {
738 brcmf_err("usb_submit_urb failed %d\n", ret);
739 goto finalize;
740 }
741
742 if (!brcmf_usb_ioctl_resp_wait(devinfo)) {
743 usb_kill_urb(devinfo->ctl_urb);
744 ret = -ETIMEDOUT;
745 } else {
746 memcpy(buffer, tmpbuf, buflen);
747 }
748
749 finalize:
750 kfree(tmpbuf);
751 return ret;
752 }
753
754 static bool
brcmf_usb_dlneeded(struct brcmf_usbdev_info * devinfo)755 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
756 {
757 struct bootrom_id_le id;
758 u32 chipid, chiprev;
759
760 brcmf_dbg(USB, "Enter\n");
761
762 if (devinfo == NULL)
763 return false;
764
765 /* Check if firmware downloaded already by querying runtime ID */
766 id.chip = cpu_to_le32(0xDEAD);
767 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
768
769 chipid = le32_to_cpu(id.chip);
770 chiprev = le32_to_cpu(id.chiprev);
771
772 if ((chipid & 0x4300) == 0x4300)
773 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
774 else
775 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
776 if (chipid == BRCMF_POSTBOOT_ID) {
777 brcmf_dbg(USB, "firmware already downloaded\n");
778 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
779 return false;
780 } else {
781 devinfo->bus_pub.devid = chipid;
782 devinfo->bus_pub.chiprev = chiprev;
783 }
784 return true;
785 }
786
787 static int
brcmf_usb_resetcfg(struct brcmf_usbdev_info * devinfo)788 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
789 {
790 struct bootrom_id_le id;
791 u32 loop_cnt;
792 int err;
793
794 brcmf_dbg(USB, "Enter\n");
795
796 loop_cnt = 0;
797 do {
798 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
799 loop_cnt++;
800 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
801 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
802 if ((err) && (err != -ETIMEDOUT))
803 return err;
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
brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info * devinfo,void * buffer,int len)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
brcmf_usb_dl_writeimage(struct brcmf_usbdev_info * devinfo,u8 * fw,int fwlen)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(TRX_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, sizeof(state));
866
867 rdlstate = le32_to_cpu(state.state);
868 rdlbytes = le32_to_cpu(state.bytes);
869
870 /* 2) Check we are in the Waiting state */
871 if (rdlstate != DL_WAITING) {
872 brcmf_err("Failed to DL_START\n");
873 err = -EINVAL;
874 goto fail;
875 }
876 sent = 0;
877 dlpos = fw;
878 dllen = fwlen;
879
880 /* Get chip id and rev */
881 while (rdlbytes != dllen) {
882 /* Wait until the usb device reports it received all
883 * the bytes we sent */
884 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
885 if ((dllen-sent) < TRX_RDL_CHUNK)
886 sendlen = dllen-sent;
887 else
888 sendlen = TRX_RDL_CHUNK;
889
890 /* simply avoid having to send a ZLP by ensuring we
891 * never have an even
892 * multiple of 64
893 */
894 if (!(sendlen % 64))
895 sendlen -= 4;
896
897 /* send data */
898 memcpy(bulkchunk, dlpos, sendlen);
899 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
900 sendlen)) {
901 brcmf_err("send_bulk failed\n");
902 err = -EINVAL;
903 goto fail;
904 }
905
906 dlpos += sendlen;
907 sent += sendlen;
908 }
909 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
910 sizeof(state));
911 if (err) {
912 brcmf_err("DL_GETSTATE Failed\n");
913 goto fail;
914 }
915
916 rdlstate = le32_to_cpu(state.state);
917 rdlbytes = le32_to_cpu(state.bytes);
918
919 /* restart if an error is reported */
920 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
921 brcmf_err("Bad Hdr or Bad CRC state %d\n",
922 rdlstate);
923 err = -EINVAL;
924 goto fail;
925 }
926 }
927
928 fail:
929 kfree(bulkchunk);
930 brcmf_dbg(USB, "Exit, err=%d\n", err);
931 return err;
932 }
933
brcmf_usb_dlstart(struct brcmf_usbdev_info * devinfo,u8 * fw,int len)934 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
935 {
936 int err;
937
938 brcmf_dbg(USB, "Enter\n");
939
940 if (devinfo == NULL)
941 return -EINVAL;
942
943 if (devinfo->bus_pub.devid == 0xDEAD)
944 return -EINVAL;
945
946 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
947 if (err == 0)
948 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
949 else
950 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
951 brcmf_dbg(USB, "Exit, err=%d\n", err);
952
953 return err;
954 }
955
brcmf_usb_dlrun(struct brcmf_usbdev_info * devinfo)956 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
957 {
958 struct rdl_state_le state;
959
960 brcmf_dbg(USB, "Enter\n");
961 if (!devinfo)
962 return -EINVAL;
963
964 if (devinfo->bus_pub.devid == 0xDEAD)
965 return -EINVAL;
966
967 /* Check we are runnable */
968 state.state = 0;
969 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state));
970
971 /* Start the image */
972 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
973 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state)))
974 return -ENODEV;
975 if (brcmf_usb_resetcfg(devinfo))
976 return -ENODEV;
977 /* The Dongle may go for re-enumeration. */
978 } else {
979 brcmf_err("Dongle not runnable\n");
980 return -EINVAL;
981 }
982 brcmf_dbg(USB, "Exit\n");
983 return 0;
984 }
985
brcmf_usb_chip_support(int chipid,int chiprev)986 static bool brcmf_usb_chip_support(int chipid, int chiprev)
987 {
988 switch(chipid) {
989 case BRCM_CC_43143_CHIP_ID:
990 return true;
991 case BRCM_CC_43235_CHIP_ID:
992 case BRCM_CC_43236_CHIP_ID:
993 case BRCM_CC_43238_CHIP_ID:
994 return (chiprev == 3);
995 case BRCM_CC_43242_CHIP_ID:
996 return true;
997 case BRCM_CC_43566_CHIP_ID:
998 case BRCM_CC_43569_CHIP_ID:
999 return true;
1000 default:
1001 break;
1002 }
1003 return false;
1004 }
1005
1006 static int
brcmf_usb_fw_download(struct brcmf_usbdev_info * devinfo)1007 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1008 {
1009 int devid, chiprev;
1010 int err;
1011
1012 brcmf_dbg(USB, "Enter\n");
1013 if (devinfo == NULL)
1014 return -ENODEV;
1015
1016 devid = devinfo->bus_pub.devid;
1017 chiprev = devinfo->bus_pub.chiprev;
1018
1019 if (!brcmf_usb_chip_support(devid, chiprev)) {
1020 brcmf_err("unsupported chip %d rev %d\n",
1021 devid, chiprev);
1022 return -EINVAL;
1023 }
1024
1025 if (!devinfo->image) {
1026 brcmf_err("No firmware!\n");
1027 return -ENOENT;
1028 }
1029
1030 err = brcmf_usb_dlstart(devinfo,
1031 (u8 *)devinfo->image, devinfo->image_len);
1032 if (err == 0)
1033 err = brcmf_usb_dlrun(devinfo);
1034 return err;
1035 }
1036
1037
brcmf_usb_detach(struct brcmf_usbdev_info * devinfo)1038 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1039 {
1040 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1041
1042 /* free the URBS */
1043 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1044 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1045
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
check_file(const u8 * headers)1054 static int check_file(const u8 *headers)
1055 {
1056 struct trx_header_le *trx;
1057 int actual_len = -1;
1058
1059 brcmf_dbg(USB, "Enter\n");
1060 /* Extract trx header */
1061 trx = (struct trx_header_le *) headers;
1062 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1063 return -1;
1064
1065 headers += sizeof(struct trx_header_le);
1066
1067 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1068 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1069 return actual_len + sizeof(struct trx_header_le);
1070 }
1071 return -1;
1072 }
1073
brcmf_usb_get_fwname(struct brcmf_usbdev_info * devinfo)1074 static const char *brcmf_usb_get_fwname(struct brcmf_usbdev_info *devinfo)
1075 {
1076 switch (devinfo->bus_pub.devid) {
1077 case BRCM_CC_43143_CHIP_ID:
1078 return BRCMF_USB_43143_FW_NAME;
1079 case BRCM_CC_43235_CHIP_ID:
1080 case BRCM_CC_43236_CHIP_ID:
1081 case BRCM_CC_43238_CHIP_ID:
1082 return BRCMF_USB_43236_FW_NAME;
1083 case BRCM_CC_43242_CHIP_ID:
1084 return BRCMF_USB_43242_FW_NAME;
1085 case BRCM_CC_43566_CHIP_ID:
1086 case BRCM_CC_43569_CHIP_ID:
1087 return BRCMF_USB_43569_FW_NAME;
1088 default:
1089 return NULL;
1090 }
1091 }
1092
1093
1094 static
brcmf_usb_attach(struct brcmf_usbdev_info * devinfo,int nrxq,int ntxq)1095 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1096 int nrxq, int ntxq)
1097 {
1098 brcmf_dbg(USB, "Enter\n");
1099
1100 devinfo->bus_pub.nrxq = nrxq;
1101 devinfo->rx_low_watermark = nrxq / 2;
1102 devinfo->bus_pub.devinfo = devinfo;
1103 devinfo->bus_pub.ntxq = ntxq;
1104 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1105
1106 /* flow control when too many tx urbs posted */
1107 devinfo->tx_low_watermark = ntxq / 4;
1108 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1109 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1110
1111 /* Initialize other structure content */
1112 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1113
1114 /* Initialize the spinlocks */
1115 spin_lock_init(&devinfo->qlock);
1116 spin_lock_init(&devinfo->tx_flowblock_lock);
1117
1118 INIT_LIST_HEAD(&devinfo->rx_freeq);
1119 INIT_LIST_HEAD(&devinfo->rx_postq);
1120
1121 INIT_LIST_HEAD(&devinfo->tx_freeq);
1122 INIT_LIST_HEAD(&devinfo->tx_postq);
1123
1124 devinfo->tx_flowblock = false;
1125
1126 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1127 if (!devinfo->rx_reqs)
1128 goto error;
1129
1130 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1131 if (!devinfo->tx_reqs)
1132 goto error;
1133 devinfo->tx_freecount = ntxq;
1134
1135 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1136 if (!devinfo->ctl_urb) {
1137 brcmf_err("usb_alloc_urb (ctl) failed\n");
1138 goto error;
1139 }
1140 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1141 if (!devinfo->bulk_urb) {
1142 brcmf_err("usb_alloc_urb (bulk) failed\n");
1143 goto error;
1144 }
1145
1146 return &devinfo->bus_pub;
1147
1148 error:
1149 brcmf_err("failed!\n");
1150 brcmf_usb_detach(devinfo);
1151 return NULL;
1152 }
1153
brcmf_usb_wowl_config(struct device * dev,bool enabled)1154 static void brcmf_usb_wowl_config(struct device *dev, bool enabled)
1155 {
1156 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
1157
1158 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled);
1159 devinfo->wowl_enabled = enabled;
1160 if (enabled)
1161 device_set_wakeup_enable(devinfo->dev, true);
1162 else
1163 device_set_wakeup_enable(devinfo->dev, false);
1164 }
1165
1166 static struct brcmf_bus_ops brcmf_usb_bus_ops = {
1167 .txdata = brcmf_usb_tx,
1168 .stop = brcmf_usb_down,
1169 .txctl = brcmf_usb_tx_ctlpkt,
1170 .rxctl = brcmf_usb_rx_ctlpkt,
1171 .wowl_config = brcmf_usb_wowl_config,
1172 };
1173
brcmf_usb_bus_setup(struct brcmf_usbdev_info * devinfo)1174 static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo)
1175 {
1176 int ret;
1177
1178 /* Attach to the common driver interface */
1179 ret = brcmf_attach(devinfo->dev);
1180 if (ret) {
1181 brcmf_err("brcmf_attach failed\n");
1182 return ret;
1183 }
1184
1185 ret = brcmf_usb_up(devinfo->dev);
1186 if (ret)
1187 goto fail;
1188
1189 ret = brcmf_bus_start(devinfo->dev);
1190 if (ret)
1191 goto fail;
1192
1193 return 0;
1194 fail:
1195 brcmf_detach(devinfo->dev);
1196 return ret;
1197 }
1198
brcmf_usb_probe_phase2(struct device * dev,const struct firmware * fw,void * nvram,u32 nvlen)1199 static void brcmf_usb_probe_phase2(struct device *dev,
1200 const struct firmware *fw,
1201 void *nvram, u32 nvlen)
1202 {
1203 struct brcmf_bus *bus = dev_get_drvdata(dev);
1204 struct brcmf_usbdev_info *devinfo;
1205 int ret;
1206
1207 brcmf_dbg(USB, "Start fw downloading\n");
1208
1209 devinfo = bus->bus_priv.usb->devinfo;
1210 ret = check_file(fw->data);
1211 if (ret < 0) {
1212 brcmf_err("invalid firmware\n");
1213 release_firmware(fw);
1214 goto error;
1215 }
1216
1217 devinfo->image = fw->data;
1218 devinfo->image_len = fw->size;
1219
1220 ret = brcmf_usb_fw_download(devinfo);
1221 release_firmware(fw);
1222 if (ret)
1223 goto error;
1224
1225 ret = brcmf_usb_bus_setup(devinfo);
1226 if (ret)
1227 goto error;
1228
1229 mutex_unlock(&devinfo->dev_init_lock);
1230 return;
1231 error:
1232 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret);
1233 mutex_unlock(&devinfo->dev_init_lock);
1234 device_release_driver(dev);
1235 }
1236
brcmf_usb_probe_cb(struct brcmf_usbdev_info * devinfo)1237 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1238 {
1239 struct brcmf_bus *bus = NULL;
1240 struct brcmf_usbdev *bus_pub = NULL;
1241 struct device *dev = devinfo->dev;
1242 int ret;
1243
1244 brcmf_dbg(USB, "Enter\n");
1245 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1246 if (!bus_pub)
1247 return -ENODEV;
1248
1249 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1250 if (!bus) {
1251 ret = -ENOMEM;
1252 goto fail;
1253 }
1254
1255 bus->dev = dev;
1256 bus_pub->bus = bus;
1257 bus->bus_priv.usb = bus_pub;
1258 dev_set_drvdata(dev, bus);
1259 bus->ops = &brcmf_usb_bus_ops;
1260 bus->proto_type = BRCMF_PROTO_BCDC;
1261 bus->always_use_fws_queue = true;
1262 #ifdef CONFIG_PM
1263 bus->wowl_supported = true;
1264 #endif
1265
1266 if (!brcmf_usb_dlneeded(devinfo)) {
1267 ret = brcmf_usb_bus_setup(devinfo);
1268 if (ret)
1269 goto fail;
1270 /* we are done */
1271 mutex_unlock(&devinfo->dev_init_lock);
1272 return 0;
1273 }
1274 bus->chip = bus_pub->devid;
1275 bus->chiprev = bus_pub->chiprev;
1276
1277 /* request firmware here */
1278 ret = brcmf_fw_get_firmwares(dev, 0, brcmf_usb_get_fwname(devinfo),
1279 NULL, brcmf_usb_probe_phase2);
1280 if (ret) {
1281 brcmf_err("firmware request failed: %d\n", ret);
1282 goto fail;
1283 }
1284
1285 return 0;
1286
1287 fail:
1288 /* Release resources in reverse order */
1289 kfree(bus);
1290 brcmf_usb_detach(devinfo);
1291 return ret;
1292 }
1293
1294 static void
brcmf_usb_disconnect_cb(struct brcmf_usbdev_info * devinfo)1295 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo)
1296 {
1297 if (!devinfo)
1298 return;
1299 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
1300
1301 brcmf_detach(devinfo->dev);
1302 kfree(devinfo->bus_pub.bus);
1303 brcmf_usb_detach(devinfo);
1304 }
1305
1306 static int
brcmf_usb_probe(struct usb_interface * intf,const struct usb_device_id * id)1307 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1308 {
1309 struct usb_device *usb = interface_to_usbdev(intf);
1310 struct brcmf_usbdev_info *devinfo;
1311 struct usb_interface_descriptor *desc;
1312 struct usb_endpoint_descriptor *endpoint;
1313 int ret = 0;
1314 u32 num_of_eps;
1315 u8 endpoint_num, ep;
1316
1317 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct);
1318
1319 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC);
1320 if (devinfo == NULL)
1321 return -ENOMEM;
1322
1323 devinfo->usbdev = usb;
1324 devinfo->dev = &usb->dev;
1325 /* Take an init lock, to protect for disconnect while still loading.
1326 * Necessary because of the asynchronous firmware load construction
1327 */
1328 mutex_init(&devinfo->dev_init_lock);
1329 mutex_lock(&devinfo->dev_init_lock);
1330
1331 usb_set_intfdata(intf, devinfo);
1332
1333 /* Check that the device supports only one configuration */
1334 if (usb->descriptor.bNumConfigurations != 1) {
1335 brcmf_err("Number of configurations: %d not supported\n",
1336 usb->descriptor.bNumConfigurations);
1337 ret = -ENODEV;
1338 goto fail;
1339 }
1340
1341 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) &&
1342 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) &&
1343 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) {
1344 brcmf_err("Device class: 0x%x not supported\n",
1345 usb->descriptor.bDeviceClass);
1346 ret = -ENODEV;
1347 goto fail;
1348 }
1349
1350 desc = &intf->altsetting[0].desc;
1351 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
1352 (desc->bInterfaceSubClass != 2) ||
1353 (desc->bInterfaceProtocol != 0xff)) {
1354 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n",
1355 desc->bInterfaceNumber, desc->bInterfaceClass,
1356 desc->bInterfaceSubClass, desc->bInterfaceProtocol);
1357 ret = -ENODEV;
1358 goto fail;
1359 }
1360
1361 num_of_eps = desc->bNumEndpoints;
1362 for (ep = 0; ep < num_of_eps; ep++) {
1363 endpoint = &intf->altsetting[0].endpoint[ep].desc;
1364 endpoint_num = usb_endpoint_num(endpoint);
1365 if (!usb_endpoint_xfer_bulk(endpoint))
1366 continue;
1367 if (usb_endpoint_dir_in(endpoint)) {
1368 if (!devinfo->rx_pipe)
1369 devinfo->rx_pipe =
1370 usb_rcvbulkpipe(usb, endpoint_num);
1371 } else {
1372 if (!devinfo->tx_pipe)
1373 devinfo->tx_pipe =
1374 usb_sndbulkpipe(usb, endpoint_num);
1375 }
1376 }
1377 if (devinfo->rx_pipe == 0) {
1378 brcmf_err("No RX (in) Bulk EP found\n");
1379 ret = -ENODEV;
1380 goto fail;
1381 }
1382 if (devinfo->tx_pipe == 0) {
1383 brcmf_err("No TX (out) Bulk EP found\n");
1384 ret = -ENODEV;
1385 goto fail;
1386 }
1387
1388 devinfo->ifnum = desc->bInterfaceNumber;
1389
1390 if (usb->speed == USB_SPEED_SUPER)
1391 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n");
1392 else if (usb->speed == USB_SPEED_HIGH)
1393 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n");
1394 else
1395 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n");
1396
1397 ret = brcmf_usb_probe_cb(devinfo);
1398 if (ret)
1399 goto fail;
1400
1401 /* Success */
1402 return 0;
1403
1404 fail:
1405 mutex_unlock(&devinfo->dev_init_lock);
1406 kfree(devinfo);
1407 usb_set_intfdata(intf, NULL);
1408 return ret;
1409 }
1410
1411 static void
brcmf_usb_disconnect(struct usb_interface * intf)1412 brcmf_usb_disconnect(struct usb_interface *intf)
1413 {
1414 struct brcmf_usbdev_info *devinfo;
1415
1416 brcmf_dbg(USB, "Enter\n");
1417 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf);
1418
1419 if (devinfo) {
1420 mutex_lock(&devinfo->dev_init_lock);
1421 /* Make sure that devinfo still exists. Firmware probe routines
1422 * may have released the device and cleared the intfdata.
1423 */
1424 if (!usb_get_intfdata(intf))
1425 goto done;
1426
1427 brcmf_usb_disconnect_cb(devinfo);
1428 kfree(devinfo);
1429 }
1430 done:
1431 brcmf_dbg(USB, "Exit\n");
1432 }
1433
1434 /*
1435 * only need to signal the bus being down and update the state.
1436 */
brcmf_usb_suspend(struct usb_interface * intf,pm_message_t state)1437 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1438 {
1439 struct usb_device *usb = interface_to_usbdev(intf);
1440 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1441
1442 brcmf_dbg(USB, "Enter\n");
1443 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
1444 if (devinfo->wowl_enabled)
1445 brcmf_cancel_all_urbs(devinfo);
1446 else
1447 brcmf_detach(&usb->dev);
1448 return 0;
1449 }
1450
1451 /*
1452 * (re-) start the bus.
1453 */
brcmf_usb_resume(struct usb_interface * intf)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 (!devinfo->wowl_enabled)
1461 return brcmf_usb_bus_setup(devinfo);
1462
1463 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
1464 brcmf_usb_rx_fill_all(devinfo);
1465 return 0;
1466 }
1467
brcmf_usb_reset_resume(struct usb_interface * intf)1468 static int brcmf_usb_reset_resume(struct usb_interface *intf)
1469 {
1470 struct usb_device *usb = interface_to_usbdev(intf);
1471 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1472
1473 brcmf_dbg(USB, "Enter\n");
1474
1475 return brcmf_fw_get_firmwares(&usb->dev, 0,
1476 brcmf_usb_get_fwname(devinfo), NULL,
1477 brcmf_usb_probe_phase2);
1478 }
1479
1480 #define BRCMF_USB_DEVICE(dev_id) \
1481 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) }
1482
1483 static struct usb_device_id brcmf_usb_devid_table[] = {
1484 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID),
1485 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID),
1486 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID),
1487 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID),
1488 /* special entry for device with firmware loaded and running */
1489 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID),
1490 { /* end: all zeroes */ }
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 MODULE_FIRMWARE(BRCMF_USB_43569_FW_NAME);
1498
1499 static struct usb_driver brcmf_usbdrvr = {
1500 .name = KBUILD_MODNAME,
1501 .probe = brcmf_usb_probe,
1502 .disconnect = brcmf_usb_disconnect,
1503 .id_table = brcmf_usb_devid_table,
1504 .suspend = brcmf_usb_suspend,
1505 .resume = brcmf_usb_resume,
1506 .reset_resume = brcmf_usb_reset_resume,
1507 .supports_autosuspend = 1,
1508 .disable_hub_initiated_lpm = 1,
1509 };
1510
brcmf_usb_reset_device(struct device * dev,void * notused)1511 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1512 {
1513 /* device past is the usb interface so we
1514 * need to use parent here.
1515 */
1516 brcmf_dev_reset(dev->parent);
1517 return 0;
1518 }
1519
brcmf_usb_exit(void)1520 void brcmf_usb_exit(void)
1521 {
1522 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1523 int ret;
1524
1525 brcmf_dbg(USB, "Enter\n");
1526 ret = driver_for_each_device(drv, NULL, NULL,
1527 brcmf_usb_reset_device);
1528 usb_deregister(&brcmf_usbdrvr);
1529 }
1530
brcmf_usb_register(void)1531 void brcmf_usb_register(void)
1532 {
1533 brcmf_dbg(USB, "Enter\n");
1534 usb_register(&brcmf_usbdrvr);
1535 }
1536