?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Linux 4.19.133
[linux/fpc-iii.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / usb.c
blob41254f04ab152eb4e562d04867ccdd7cceee5168
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 #include "core.h"
31 #include "common.h"
32 #include "bcdc.h"
33
34
35 #define IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000)
36
37 #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */
38 #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10
39
40 #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle
41 has boot up */
42 #define BRCMF_USB_NRXQ 50
43 #define BRCMF_USB_NTXQ 50
44
45 #define BRCMF_USB_CBCTL_WRITE 0
46 #define BRCMF_USB_CBCTL_READ 1
47 #define BRCMF_USB_MAX_PKT_SIZE 1600
48
49 BRCMF_FW_DEF(43143, "brcmfmac43143");
50 BRCMF_FW_DEF(43236B, "brcmfmac43236b");
51 BRCMF_FW_DEF(43242A, "brcmfmac43242a");
52 BRCMF_FW_DEF(43569, "brcmfmac43569");
53 BRCMF_FW_DEF(4373, "brcmfmac4373");
54
55 static const struct brcmf_firmware_mapping brcmf_usb_fwnames[] = {
56 BRCMF_FW_ENTRY(BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, 43143),
57 BRCMF_FW_ENTRY(BRCM_CC_43235_CHIP_ID, 0x00000008, 43236B),
58 BRCMF_FW_ENTRY(BRCM_CC_43236_CHIP_ID, 0x00000008, 43236B),
59 BRCMF_FW_ENTRY(BRCM_CC_43238_CHIP_ID, 0x00000008, 43236B),
60 BRCMF_FW_ENTRY(BRCM_CC_43242_CHIP_ID, 0xFFFFFFFF, 43242A),
61 BRCMF_FW_ENTRY(BRCM_CC_43566_CHIP_ID, 0xFFFFFFFF, 43569),
62 BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43569),
63 BRCMF_FW_ENTRY(CY_CC_4373_CHIP_ID, 0xFFFFFFFF, 4373)
64 };
65
66 #define TRX_MAGIC 0x30524448 /* "HDR0" */
67 #define TRX_MAX_OFFSET 3 /* Max number of file offsets */
68 #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */
69 #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */
70 #define TRX_OFFSETS_DLFWLEN_IDX 0
71
72 /* Control messages: bRequest values */
73 #define DL_GETSTATE 0 /* returns the rdl_state_t struct */
74 #define DL_CHECK_CRC 1 /* currently unused */
75 #define DL_GO 2 /* execute downloaded image */
76 #define DL_START 3 /* initialize dl state */
77 #define DL_REBOOT 4 /* reboot the device in 2 seconds */
78 #define DL_GETVER 5 /* returns the bootrom_id_t struct */
79 #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset
80 * event to occur in 2 seconds. It is the
81 * responsibility of the downloaded code to
82 * clear this event
83 */
84 #define DL_EXEC 7 /* jump to a supplied address */
85 #define DL_RESETCFG 8 /* To support single enum on dongle
86 * - Not used by bootloader
87 */
88 #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup
89 * if resp unavailable
90 */
91
92 /* states */
93 #define DL_WAITING 0 /* waiting to rx first pkt */
94 #define DL_READY 1 /* hdr was good, waiting for more of the
95 * compressed image
96 */
97 #define DL_BAD_HDR 2 /* hdr was corrupted */
98 #define DL_BAD_CRC 3 /* compressed image was corrupted */
99 #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */
100 #define DL_START_FAIL 5 /* failed to initialize correctly */
101 #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM
102 * value
103 */
104 #define DL_IMAGE_TOOBIG 7 /* firmware image too big */
105
106
107 struct trx_header_le {
108 __le32 magic; /* "HDR0" */
109 __le32 len; /* Length of file including header */
110 __le32 crc32; /* CRC from flag_version to end of file */
111 __le32 flag_version; /* 0:15 flags, 16:31 version */
112 __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of
113 * header
114 */
115 };
116
117 struct rdl_state_le {
118 __le32 state;
119 __le32 bytes;
120 };
121
122 struct bootrom_id_le {
123 __le32 chip; /* Chip id */
124 __le32 chiprev; /* Chip rev */
125 __le32 ramsize; /* Size of RAM */
126 __le32 remapbase; /* Current remap base address */
127 __le32 boardtype; /* Type of board */
128 __le32 boardrev; /* Board revision */
129 };
130
131 struct brcmf_usb_image {
132 struct list_head list;
133 s8 *fwname;
134 u8 *image;
135 int image_len;
136 };
137
138 struct brcmf_usbdev_info {
139 struct brcmf_usbdev bus_pub; /* MUST BE FIRST */
140 spinlock_t qlock;
141 struct list_head rx_freeq;
142 struct list_head rx_postq;
143 struct list_head tx_freeq;
144 struct list_head tx_postq;
145 uint rx_pipe, tx_pipe;
146
147 int rx_low_watermark;
148 int tx_low_watermark;
149 int tx_high_watermark;
150 int tx_freecount;
151 bool tx_flowblock;
152 spinlock_t tx_flowblock_lock;
153
154 struct brcmf_usbreq *tx_reqs;
155 struct brcmf_usbreq *rx_reqs;
156
157 char fw_name[BRCMF_FW_NAME_LEN];
158 const u8 *image; /* buffer for combine fw and nvram */
159 int image_len;
160
161 struct usb_device *usbdev;
162 struct device *dev;
163 struct completion dev_init_done;
164
165 int ctl_in_pipe, ctl_out_pipe;
166 struct urb *ctl_urb; /* URB for control endpoint */
167 struct usb_ctrlrequest ctl_write;
168 struct usb_ctrlrequest ctl_read;
169 u32 ctl_urb_actual_length;
170 int ctl_urb_status;
171 int ctl_completed;
172 wait_queue_head_t ioctl_resp_wait;
173 ulong ctl_op;
174 u8 ifnum;
175
176 struct urb *bulk_urb; /* used for FW download */
177
178 bool wowl_enabled;
179 struct brcmf_mp_device *settings;
180 };
181
182 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
183 struct brcmf_usbreq *req);
184
185 static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev)
186 {
187 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
188 return bus_if->bus_priv.usb;
189 }
190
191 static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev)
192 {
193 return brcmf_usb_get_buspub(dev)->devinfo;
194 }
195
196 static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo)
197 {
198 return wait_event_timeout(devinfo->ioctl_resp_wait,
199 devinfo->ctl_completed, IOCTL_RESP_TIMEOUT);
200 }
201
202 static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo)
203 {
204 wake_up(&devinfo->ioctl_resp_wait);
205 }
206
207 static void
208 brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status)
209 {
210 brcmf_dbg(USB, "Enter, status=%d\n", status);
211
212 if (unlikely(devinfo == NULL))
213 return;
214
215 if (type == BRCMF_USB_CBCTL_READ) {
216 if (status == 0)
217 devinfo->bus_pub.stats.rx_ctlpkts++;
218 else
219 devinfo->bus_pub.stats.rx_ctlerrs++;
220 } else if (type == BRCMF_USB_CBCTL_WRITE) {
221 if (status == 0)
222 devinfo->bus_pub.stats.tx_ctlpkts++;
223 else
224 devinfo->bus_pub.stats.tx_ctlerrs++;
225 }
226
227 devinfo->ctl_urb_status = status;
228 devinfo->ctl_completed = true;
229 brcmf_usb_ioctl_resp_wake(devinfo);
230 }
231
232 static void
233 brcmf_usb_ctlread_complete(struct urb *urb)
234 {
235 struct brcmf_usbdev_info *devinfo =
236 (struct brcmf_usbdev_info *)urb->context;
237
238 brcmf_dbg(USB, "Enter\n");
239 devinfo->ctl_urb_actual_length = urb->actual_length;
240 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ,
241 urb->status);
242 }
243
244 static void
245 brcmf_usb_ctlwrite_complete(struct urb *urb)
246 {
247 struct brcmf_usbdev_info *devinfo =
248 (struct brcmf_usbdev_info *)urb->context;
249
250 brcmf_dbg(USB, "Enter\n");
251 brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE,
252 urb->status);
253 }
254
255 static int
256 brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
257 {
258 int ret;
259 u16 size;
260
261 brcmf_dbg(USB, "Enter\n");
262 if (devinfo == NULL || buf == NULL ||
263 len == 0 || devinfo->ctl_urb == NULL)
264 return -EINVAL;
265
266 size = len;
267 devinfo->ctl_write.wLength = cpu_to_le16p(&size);
268 devinfo->ctl_urb->transfer_buffer_length = size;
269 devinfo->ctl_urb_status = 0;
270 devinfo->ctl_urb_actual_length = 0;
271
272 usb_fill_control_urb(devinfo->ctl_urb,
273 devinfo->usbdev,
274 devinfo->ctl_out_pipe,
275 (unsigned char *) &devinfo->ctl_write,
276 buf, size,
277 (usb_complete_t)brcmf_usb_ctlwrite_complete,
278 devinfo);
279
280 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
281 if (ret < 0)
282 brcmf_err("usb_submit_urb failed %d\n", ret);
283
284 return ret;
285 }
286
287 static int
288 brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len)
289 {
290 int ret;
291 u16 size;
292
293 brcmf_dbg(USB, "Enter\n");
294 if ((devinfo == NULL) || (buf == NULL) || (len == 0)
295 || (devinfo->ctl_urb == NULL))
296 return -EINVAL;
297
298 size = len;
299 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
300 devinfo->ctl_urb->transfer_buffer_length = size;
301
302 devinfo->ctl_read.bRequestType = USB_DIR_IN
303 | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
304 devinfo->ctl_read.bRequest = 1;
305
306 usb_fill_control_urb(devinfo->ctl_urb,
307 devinfo->usbdev,
308 devinfo->ctl_in_pipe,
309 (unsigned char *) &devinfo->ctl_read,
310 buf, size,
311 (usb_complete_t)brcmf_usb_ctlread_complete,
312 devinfo);
313
314 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
315 if (ret < 0)
316 brcmf_err("usb_submit_urb failed %d\n", ret);
317
318 return ret;
319 }
320
321 static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len)
322 {
323 int err = 0;
324 int timeout = 0;
325 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
326
327 brcmf_dbg(USB, "Enter\n");
328 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
329 return -EIO;
330
331 if (test_and_set_bit(0, &devinfo->ctl_op))
332 return -EIO;
333
334 devinfo->ctl_completed = false;
335 err = brcmf_usb_send_ctl(devinfo, buf, len);
336 if (err) {
337 brcmf_err("fail %d bytes: %d\n", err, len);
338 clear_bit(0, &devinfo->ctl_op);
339 return err;
340 }
341 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
342 clear_bit(0, &devinfo->ctl_op);
343 if (!timeout) {
344 brcmf_err("Txctl wait timed out\n");
345 err = -EIO;
346 }
347 return err;
348 }
349
350 static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len)
351 {
352 int err = 0;
353 int timeout = 0;
354 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
355
356 brcmf_dbg(USB, "Enter\n");
357 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP)
358 return -EIO;
359
360 if (test_and_set_bit(0, &devinfo->ctl_op))
361 return -EIO;
362
363 devinfo->ctl_completed = false;
364 err = brcmf_usb_recv_ctl(devinfo, buf, len);
365 if (err) {
366 brcmf_err("fail %d bytes: %d\n", err, len);
367 clear_bit(0, &devinfo->ctl_op);
368 return err;
369 }
370 timeout = brcmf_usb_ioctl_resp_wait(devinfo);
371 err = devinfo->ctl_urb_status;
372 clear_bit(0, &devinfo->ctl_op);
373 if (!timeout) {
374 brcmf_err("rxctl wait timed out\n");
375 err = -EIO;
376 }
377 if (!err)
378 return devinfo->ctl_urb_actual_length;
379 else
380 return err;
381 }
382
383 static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo,
384 struct list_head *q, int *counter)
385 {
386 unsigned long flags;
387 struct brcmf_usbreq *req;
388 spin_lock_irqsave(&devinfo->qlock, flags);
389 if (list_empty(q)) {
390 spin_unlock_irqrestore(&devinfo->qlock, flags);
391 return NULL;
392 }
393 req = list_entry(q->next, struct brcmf_usbreq, list);
394 list_del_init(q->next);
395 if (counter)
396 (*counter)--;
397 spin_unlock_irqrestore(&devinfo->qlock, flags);
398 return req;
399
400 }
401
402 static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo,
403 struct list_head *q, struct brcmf_usbreq *req,
404 int *counter)
405 {
406 unsigned long flags;
407 spin_lock_irqsave(&devinfo->qlock, flags);
408 list_add_tail(&req->list, q);
409 if (counter)
410 (*counter)++;
411 spin_unlock_irqrestore(&devinfo->qlock, flags);
412 }
413
414 static struct brcmf_usbreq *
415 brcmf_usbdev_qinit(struct list_head *q, int qsize)
416 {
417 int i;
418 struct brcmf_usbreq *req, *reqs;
419
420 reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC);
421 if (reqs == NULL)
422 return NULL;
423
424 req = reqs;
425
426 for (i = 0; i < qsize; i++) {
427 req->urb = usb_alloc_urb(0, GFP_ATOMIC);
428 if (!req->urb)
429 goto fail;
430
431 INIT_LIST_HEAD(&req->list);
432 list_add_tail(&req->list, q);
433 req++;
434 }
435 return reqs;
436 fail:
437 brcmf_err("fail!\n");
438 while (!list_empty(q)) {
439 req = list_entry(q->next, struct brcmf_usbreq, list);
440 if (req)
441 usb_free_urb(req->urb);
442 list_del(q->next);
443 }
444 kfree(reqs);
445 return NULL;
446
447 }
448
449 static void brcmf_usb_free_q(struct list_head *q, bool pending)
450 {
451 struct brcmf_usbreq *req, *next;
452 int i = 0;
453 list_for_each_entry_safe(req, next, q, list) {
454 if (!req->urb) {
455 brcmf_err("bad req\n");
456 break;
457 }
458 i++;
459 if (pending) {
460 usb_kill_urb(req->urb);
461 } else {
462 usb_free_urb(req->urb);
463 list_del_init(&req->list);
464 }
465 }
466 }
467
468 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
469 struct brcmf_usbreq *req)
470 {
471 unsigned long flags;
472
473 spin_lock_irqsave(&devinfo->qlock, flags);
474 list_del_init(&req->list);
475 spin_unlock_irqrestore(&devinfo->qlock, flags);
476 }
477
478
479 static void brcmf_usb_tx_complete(struct urb *urb)
480 {
481 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
482 struct brcmf_usbdev_info *devinfo = req->devinfo;
483 unsigned long flags;
484
485 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
486 req->skb);
487 brcmf_usb_del_fromq(devinfo, req);
488
489 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0);
490 req->skb = NULL;
491 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount);
492 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
493 if (devinfo->tx_freecount > devinfo->tx_high_watermark &&
494 devinfo->tx_flowblock) {
495 brcmf_proto_bcdc_txflowblock(devinfo->dev, false);
496 devinfo->tx_flowblock = false;
497 }
498 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
499 }
500
501 static void brcmf_usb_rx_complete(struct urb *urb)
502 {
503 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
504 struct brcmf_usbdev_info *devinfo = req->devinfo;
505 struct sk_buff *skb;
506
507 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
508 brcmf_usb_del_fromq(devinfo, req);
509 skb = req->skb;
510 req->skb = NULL;
511
512 /* zero lenght packets indicate usb "failure". Do not refill */
513 if (urb->status != 0 || !urb->actual_length) {
514 brcmu_pkt_buf_free_skb(skb);
515 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
516 return;
517 }
518
519 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
520 skb_put(skb, urb->actual_length);
521 brcmf_rx_frame(devinfo->dev, skb, true);
522 brcmf_usb_rx_refill(devinfo, req);
523 } else {
524 brcmu_pkt_buf_free_skb(skb);
525 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
526 }
527 return;
528
529 }
530
531 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
532 struct brcmf_usbreq *req)
533 {
534 struct sk_buff *skb;
535 int ret;
536
537 if (!req || !devinfo)
538 return;
539
540 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
541 if (!skb) {
542 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
543 return;
544 }
545 req->skb = skb;
546
547 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
548 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
549 req);
550 req->devinfo = devinfo;
551 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL);
552
553 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
554 if (ret) {
555 brcmf_usb_del_fromq(devinfo, req);
556 brcmu_pkt_buf_free_skb(req->skb);
557 req->skb = NULL;
558 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
559 }
560 return;
561 }
562
563 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
564 {
565 struct brcmf_usbreq *req;
566
567 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
568 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state);
569 return;
570 }
571 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL)
572 brcmf_usb_rx_refill(devinfo, req);
573 }
574
575 static void
576 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
577 {
578 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
579 int old_state;
580
581 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
582 devinfo->bus_pub.state, state);
583
584 if (devinfo->bus_pub.state == state)
585 return;
586
587 old_state = devinfo->bus_pub.state;
588 devinfo->bus_pub.state = state;
589
590 /* update state of upper layer */
591 if (state == BRCMFMAC_USB_STATE_DOWN) {
592 brcmf_dbg(USB, "DBUS is down\n");
593 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN);
594 } else if (state == BRCMFMAC_USB_STATE_UP) {
595 brcmf_dbg(USB, "DBUS is up\n");
596 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP);
597 } else {
598 brcmf_dbg(USB, "DBUS current state=%d\n", state);
599 }
600 }
601
602 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
603 {
604 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
605 struct brcmf_usbreq *req;
606 int ret;
607 unsigned long flags;
608
609 brcmf_dbg(USB, "Enter, skb=%p\n", skb);
610 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
611 ret = -EIO;
612 goto fail;
613 }
614
615 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
616 &devinfo->tx_freecount);
617 if (!req) {
618 brcmf_err("no req to send\n");
619 ret = -ENOMEM;
620 goto fail;
621 }
622
623 req->skb = skb;
624 req->devinfo = devinfo;
625 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
626 skb->data, skb->len, brcmf_usb_tx_complete, req);
627 req->urb->transfer_flags |= URB_ZERO_PACKET;
628 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
629 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
630 if (ret) {
631 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
632 brcmf_usb_del_fromq(devinfo, req);
633 req->skb = NULL;
634 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
635 &devinfo->tx_freecount);
636 goto fail;
637 }
638
639 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
640 if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
641 !devinfo->tx_flowblock) {
642 brcmf_proto_bcdc_txflowblock(dev, true);
643 devinfo->tx_flowblock = true;
644 }
645 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
646 return 0;
647
648 fail:
649 return ret;
650 }
651
652
653 static int brcmf_usb_up(struct device *dev)
654 {
655 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
656
657 brcmf_dbg(USB, "Enter\n");
658 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
659 return 0;
660
661 /* Success, indicate devinfo is fully up */
662 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
663
664 if (devinfo->ctl_urb) {
665 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
666 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
667
668 /* CTL Write */
669 devinfo->ctl_write.bRequestType =
670 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
671 devinfo->ctl_write.bRequest = 0;
672 devinfo->ctl_write.wValue = cpu_to_le16(0);
673 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum);
674
675 /* CTL Read */
676 devinfo->ctl_read.bRequestType =
677 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
678 devinfo->ctl_read.bRequest = 1;
679 devinfo->ctl_read.wValue = cpu_to_le16(0);
680 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum);
681 }
682 brcmf_usb_rx_fill_all(devinfo);
683 return 0;
684 }
685
686 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo)
687 {
688 int i;
689
690 if (devinfo->ctl_urb)
691 usb_kill_urb(devinfo->ctl_urb);
692 if (devinfo->bulk_urb)
693 usb_kill_urb(devinfo->bulk_urb);
694 if (devinfo->tx_reqs)
695 for (i = 0; i < devinfo->bus_pub.ntxq; i++)
696 usb_kill_urb(devinfo->tx_reqs[i].urb);
697 if (devinfo->rx_reqs)
698 for (i = 0; i < devinfo->bus_pub.nrxq; i++)
699 usb_kill_urb(devinfo->rx_reqs[i].urb);
700 }
701
702 static void brcmf_usb_down(struct device *dev)
703 {
704 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
705
706 brcmf_dbg(USB, "Enter\n");
707 if (devinfo == NULL)
708 return;
709
710 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
711 return;
712
713 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
714
715 brcmf_cancel_all_urbs(devinfo);
716 }
717
718 static void
719 brcmf_usb_sync_complete(struct urb *urb)
720 {
721 struct brcmf_usbdev_info *devinfo =
722 (struct brcmf_usbdev_info *)urb->context;
723
724 devinfo->ctl_completed = true;
725 brcmf_usb_ioctl_resp_wake(devinfo);
726 }
727
728 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
729 void *buffer, int buflen)
730 {
731 int ret;
732 char *tmpbuf;
733 u16 size;
734
735 if ((!devinfo) || (devinfo->ctl_urb == NULL))
736 return -EINVAL;
737
738 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
739 if (!tmpbuf)
740 return -ENOMEM;
741
742 size = buflen;
743 devinfo->ctl_urb->transfer_buffer_length = size;
744
745 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
746 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
747 USB_RECIP_INTERFACE;
748 devinfo->ctl_read.bRequest = cmd;
749
750 usb_fill_control_urb(devinfo->ctl_urb,
751 devinfo->usbdev,
752 usb_rcvctrlpipe(devinfo->usbdev, 0),
753 (unsigned char *) &devinfo->ctl_read,
754 (void *) tmpbuf, size,
755 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
756
757 devinfo->ctl_completed = false;
758 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
759 if (ret < 0) {
760 brcmf_err("usb_submit_urb failed %d\n", ret);
761 goto finalize;
762 }
763
764 if (!brcmf_usb_ioctl_resp_wait(devinfo)) {
765 usb_kill_urb(devinfo->ctl_urb);
766 ret = -ETIMEDOUT;
767 } else {
768 memcpy(buffer, tmpbuf, buflen);
769 }
770
771 finalize:
772 kfree(tmpbuf);
773 return ret;
774 }
775
776 static bool
777 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
778 {
779 struct bootrom_id_le id;
780 u32 chipid, chiprev;
781
782 brcmf_dbg(USB, "Enter\n");
783
784 if (devinfo == NULL)
785 return false;
786
787 /* Check if firmware downloaded already by querying runtime ID */
788 id.chip = cpu_to_le32(0xDEAD);
789 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
790
791 chipid = le32_to_cpu(id.chip);
792 chiprev = le32_to_cpu(id.chiprev);
793
794 if ((chipid & 0x4300) == 0x4300)
795 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
796 else
797 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
798 if (chipid == BRCMF_POSTBOOT_ID) {
799 brcmf_dbg(USB, "firmware already downloaded\n");
800 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
801 return false;
802 } else {
803 devinfo->bus_pub.devid = chipid;
804 devinfo->bus_pub.chiprev = chiprev;
805 }
806 return true;
807 }
808
809 static int
810 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
811 {
812 struct bootrom_id_le id;
813 u32 loop_cnt;
814 int err;
815
816 brcmf_dbg(USB, "Enter\n");
817
818 loop_cnt = 0;
819 do {
820 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
821 loop_cnt++;
822 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
823 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
824 if ((err) && (err != -ETIMEDOUT))
825 return err;
826 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
827 break;
828 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT);
829
830 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
831 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n",
832 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
833
834 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
835 return 0;
836 } else {
837 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n",
838 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt);
839 return -EINVAL;
840 }
841 }
842
843
844 static int
845 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
846 {
847 int ret;
848
849 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
850 return -EINVAL;
851
852 /* Prepare the URB */
853 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
854 devinfo->tx_pipe, buffer, len,
855 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
856
857 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
858
859 devinfo->ctl_completed = false;
860 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
861 if (ret) {
862 brcmf_err("usb_submit_urb failed %d\n", ret);
863 return ret;
864 }
865 ret = brcmf_usb_ioctl_resp_wait(devinfo);
866 return (ret == 0);
867 }
868
869 static int
870 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
871 {
872 unsigned int sendlen, sent, dllen;
873 char *bulkchunk = NULL, *dlpos;
874 struct rdl_state_le state;
875 u32 rdlstate, rdlbytes;
876 int err = 0;
877
878 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen);
879
880 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC);
881 if (bulkchunk == NULL) {
882 err = -ENOMEM;
883 goto fail;
884 }
885
886 /* 1) Prepare USB boot loader for runtime image */
887 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state));
888
889 rdlstate = le32_to_cpu(state.state);
890 rdlbytes = le32_to_cpu(state.bytes);
891
892 /* 2) Check we are in the Waiting state */
893 if (rdlstate != DL_WAITING) {
894 brcmf_err("Failed to DL_START\n");
895 err = -EINVAL;
896 goto fail;
897 }
898 sent = 0;
899 dlpos = fw;
900 dllen = fwlen;
901
902 /* Get chip id and rev */
903 while (rdlbytes != dllen) {
904 /* Wait until the usb device reports it received all
905 * the bytes we sent */
906 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
907 if ((dllen-sent) < TRX_RDL_CHUNK)
908 sendlen = dllen-sent;
909 else
910 sendlen = TRX_RDL_CHUNK;
911
912 /* simply avoid having to send a ZLP by ensuring we
913 * never have an even
914 * multiple of 64
915 */
916 if (!(sendlen % 64))
917 sendlen -= 4;
918
919 /* send data */
920 memcpy(bulkchunk, dlpos, sendlen);
921 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
922 sendlen)) {
923 brcmf_err("send_bulk failed\n");
924 err = -EINVAL;
925 goto fail;
926 }
927
928 dlpos += sendlen;
929 sent += sendlen;
930 }
931 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
932 sizeof(state));
933 if (err) {
934 brcmf_err("DL_GETSTATE Failed\n");
935 goto fail;
936 }
937
938 rdlstate = le32_to_cpu(state.state);
939 rdlbytes = le32_to_cpu(state.bytes);
940
941 /* restart if an error is reported */
942 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
943 brcmf_err("Bad Hdr or Bad CRC state %d\n",
944 rdlstate);
945 err = -EINVAL;
946 goto fail;
947 }
948 }
949
950 fail:
951 kfree(bulkchunk);
952 brcmf_dbg(USB, "Exit, err=%d\n", err);
953 return err;
954 }
955
956 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
957 {
958 int err;
959
960 brcmf_dbg(USB, "Enter\n");
961
962 if (devinfo == NULL)
963 return -EINVAL;
964
965 if (devinfo->bus_pub.devid == 0xDEAD)
966 return -EINVAL;
967
968 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
969 if (err == 0)
970 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
971 else
972 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
973 brcmf_dbg(USB, "Exit, err=%d\n", err);
974
975 return err;
976 }
977
978 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
979 {
980 struct rdl_state_le state;
981
982 brcmf_dbg(USB, "Enter\n");
983 if (!devinfo)
984 return -EINVAL;
985
986 if (devinfo->bus_pub.devid == 0xDEAD)
987 return -EINVAL;
988
989 /* Check we are runnable */
990 state.state = 0;
991 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state));
992
993 /* Start the image */
994 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
995 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state)))
996 return -ENODEV;
997 if (brcmf_usb_resetcfg(devinfo))
998 return -ENODEV;
999 /* The Dongle may go for re-enumeration. */
1000 } else {
1001 brcmf_err("Dongle not runnable\n");
1002 return -EINVAL;
1003 }
1004 brcmf_dbg(USB, "Exit\n");
1005 return 0;
1006 }
1007
1008 static int
1009 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1010 {
1011 int err;
1012
1013 brcmf_dbg(USB, "Enter\n");
1014 if (devinfo == NULL)
1015 return -ENODEV;
1016
1017 if (!devinfo->image) {
1018 brcmf_err("No firmware!\n");
1019 return -ENOENT;
1020 }
1021
1022 err = brcmf_usb_dlstart(devinfo,
1023 (u8 *)devinfo->image, devinfo->image_len);
1024 if (err == 0)
1025 err = brcmf_usb_dlrun(devinfo);
1026 return err;
1027 }
1028
1029
1030 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1031 {
1032 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1033
1034 /* free the URBS */
1035 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1036 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1037
1038 usb_free_urb(devinfo->ctl_urb);
1039 usb_free_urb(devinfo->bulk_urb);
1040
1041 kfree(devinfo->tx_reqs);
1042 kfree(devinfo->rx_reqs);
1043
1044 if (devinfo->settings)
1045 brcmf_release_module_param(devinfo->settings);
1046 }
1047
1048
1049 static int check_file(const u8 *headers)
1050 {
1051 struct trx_header_le *trx;
1052 int actual_len = -1;
1053
1054 brcmf_dbg(USB, "Enter\n");
1055 /* Extract trx header */
1056 trx = (struct trx_header_le *) headers;
1057 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1058 return -1;
1059
1060 headers += sizeof(struct trx_header_le);
1061
1062 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1063 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1064 return actual_len + sizeof(struct trx_header_le);
1065 }
1066 return -1;
1067 }
1068
1069
1070 static
1071 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1072 int nrxq, int ntxq)
1073 {
1074 brcmf_dbg(USB, "Enter\n");
1075
1076 devinfo->bus_pub.nrxq = nrxq;
1077 devinfo->rx_low_watermark = nrxq / 2;
1078 devinfo->bus_pub.devinfo = devinfo;
1079 devinfo->bus_pub.ntxq = ntxq;
1080 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1081
1082 /* flow control when too many tx urbs posted */
1083 devinfo->tx_low_watermark = ntxq / 4;
1084 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1085 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1086
1087 /* Initialize other structure content */
1088 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1089
1090 /* Initialize the spinlocks */
1091 spin_lock_init(&devinfo->qlock);
1092 spin_lock_init(&devinfo->tx_flowblock_lock);
1093
1094 INIT_LIST_HEAD(&devinfo->rx_freeq);
1095 INIT_LIST_HEAD(&devinfo->rx_postq);
1096
1097 INIT_LIST_HEAD(&devinfo->tx_freeq);
1098 INIT_LIST_HEAD(&devinfo->tx_postq);
1099
1100 devinfo->tx_flowblock = false;
1101
1102 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1103 if (!devinfo->rx_reqs)
1104 goto error;
1105
1106 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1107 if (!devinfo->tx_reqs)
1108 goto error;
1109 devinfo->tx_freecount = ntxq;
1110
1111 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1112 if (!devinfo->ctl_urb)
1113 goto error;
1114 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1115 if (!devinfo->bulk_urb)
1116 goto error;
1117
1118 return &devinfo->bus_pub;
1119
1120 error:
1121 brcmf_err("failed!\n");
1122 brcmf_usb_detach(devinfo);
1123 return NULL;
1124 }
1125
1126 static void brcmf_usb_wowl_config(struct device *dev, bool enabled)
1127 {
1128 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
1129
1130 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled);
1131 devinfo->wowl_enabled = enabled;
1132 if (enabled)
1133 device_set_wakeup_enable(devinfo->dev, true);
1134 else
1135 device_set_wakeup_enable(devinfo->dev, false);
1136 }
1137
1138 static
1139 int brcmf_usb_get_fwname(struct device *dev, const char *ext, u8 *fw_name)
1140 {
1141 struct brcmf_bus *bus = dev_get_drvdata(dev);
1142 struct brcmf_fw_request *fwreq;
1143 struct brcmf_fw_name fwnames[] = {
1144 { ext, fw_name },
1145 };
1146
1147 fwreq = brcmf_fw_alloc_request(bus->chip, bus->chiprev,
1148 brcmf_usb_fwnames,
1149 ARRAY_SIZE(brcmf_usb_fwnames),
1150 fwnames, ARRAY_SIZE(fwnames));
1151 if (!fwreq)
1152 return -ENOMEM;
1153
1154 kfree(fwreq);
1155 return 0;
1156 }
1157
1158 static const struct brcmf_bus_ops brcmf_usb_bus_ops = {
1159 .preinit = brcmf_usb_up,
1160 .stop = brcmf_usb_down,
1161 .txdata = brcmf_usb_tx,
1162 .txctl = brcmf_usb_tx_ctlpkt,
1163 .rxctl = brcmf_usb_rx_ctlpkt,
1164 .wowl_config = brcmf_usb_wowl_config,
1165 .get_fwname = brcmf_usb_get_fwname,
1166 };
1167
1168 #define BRCMF_USB_FW_CODE 0
1169
1170 static void brcmf_usb_probe_phase2(struct device *dev, int ret,
1171 struct brcmf_fw_request *fwreq)
1172 {
1173 struct brcmf_bus *bus = dev_get_drvdata(dev);
1174 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo;
1175 const struct firmware *fw;
1176
1177 if (ret)
1178 goto error;
1179
1180 brcmf_dbg(USB, "Start fw downloading\n");
1181
1182 fw = fwreq->items[BRCMF_USB_FW_CODE].binary;
1183 kfree(fwreq);
1184
1185 ret = check_file(fw->data);
1186 if (ret < 0) {
1187 brcmf_err("invalid firmware\n");
1188 release_firmware(fw);
1189 goto error;
1190 }
1191
1192 devinfo->image = fw->data;
1193 devinfo->image_len = fw->size;
1194
1195 ret = brcmf_usb_fw_download(devinfo);
1196 release_firmware(fw);
1197 if (ret)
1198 goto error;
1199
1200 /* Attach to the common driver interface */
1201 ret = brcmf_attach(devinfo->dev, devinfo->settings);
1202 if (ret)
1203 goto error;
1204
1205 complete(&devinfo->dev_init_done);
1206 return;
1207 error:
1208 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret);
1209 complete(&devinfo->dev_init_done);
1210 device_release_driver(dev);
1211 }
1212
1213 static struct brcmf_fw_request *
1214 brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo)
1215 {
1216 struct brcmf_fw_request *fwreq;
1217 struct brcmf_fw_name fwnames[] = {
1218 { ".bin", devinfo->fw_name },
1219 };
1220
1221 fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid,
1222 devinfo->bus_pub.chiprev,
1223 brcmf_usb_fwnames,
1224 ARRAY_SIZE(brcmf_usb_fwnames),
1225 fwnames, ARRAY_SIZE(fwnames));
1226 if (!fwreq)
1227 return NULL;
1228
1229 fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY;
1230
1231 return fwreq;
1232 }
1233
1234 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1235 {
1236 struct brcmf_bus *bus = NULL;
1237 struct brcmf_usbdev *bus_pub = NULL;
1238 struct device *dev = devinfo->dev;
1239 struct brcmf_fw_request *fwreq;
1240 int ret;
1241
1242 brcmf_dbg(USB, "Enter\n");
1243 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1244 if (!bus_pub)
1245 return -ENODEV;
1246
1247 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1248 if (!bus) {
1249 ret = -ENOMEM;
1250 goto fail;
1251 }
1252
1253 bus->dev = dev;
1254 bus_pub->bus = bus;
1255 bus->bus_priv.usb = bus_pub;
1256 dev_set_drvdata(dev, bus);
1257 bus->ops = &brcmf_usb_bus_ops;
1258 bus->proto_type = BRCMF_PROTO_BCDC;
1259 bus->always_use_fws_queue = true;
1260 #ifdef CONFIG_PM
1261 bus->wowl_supported = true;
1262 #endif
1263
1264 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB,
1265 bus_pub->devid,
1266 bus_pub->chiprev);
1267 if (!devinfo->settings) {
1268 ret = -ENOMEM;
1269 goto fail;
1270 }
1271
1272 if (!brcmf_usb_dlneeded(devinfo)) {
1273 ret = brcmf_attach(devinfo->dev, devinfo->settings);
1274 if (ret)
1275 goto fail;
1276 /* we are done */
1277 complete(&devinfo->dev_init_done);
1278 return 0;
1279 }
1280 bus->chip = bus_pub->devid;
1281 bus->chiprev = bus_pub->chiprev;
1282
1283 fwreq = brcmf_usb_prepare_fw_request(devinfo);
1284 if (!fwreq) {
1285 ret = -ENOMEM;
1286 goto fail;
1287 }
1288
1289 /* request firmware here */
1290 ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2);
1291 if (ret) {
1292 brcmf_err("firmware request failed: %d\n", ret);
1293 kfree(fwreq);
1294 goto fail;
1295 }
1296
1297 return 0;
1298
1299 fail:
1300 /* Release resources in reverse order */
1301 kfree(bus);
1302 brcmf_usb_detach(devinfo);
1303 return ret;
1304 }
1305
1306 static void
1307 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo)
1308 {
1309 if (!devinfo)
1310 return;
1311 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
1312
1313 brcmf_detach(devinfo->dev);
1314 kfree(devinfo->bus_pub.bus);
1315 brcmf_usb_detach(devinfo);
1316 }
1317
1318 static int
1319 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1320 {
1321 struct usb_device *usb = interface_to_usbdev(intf);
1322 struct brcmf_usbdev_info *devinfo;
1323 struct usb_interface_descriptor *desc;
1324 struct usb_endpoint_descriptor *endpoint;
1325 int ret = 0;
1326 u32 num_of_eps;
1327 u8 endpoint_num, ep;
1328
1329 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct);
1330
1331 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC);
1332 if (devinfo == NULL)
1333 return -ENOMEM;
1334
1335 devinfo->usbdev = usb;
1336 devinfo->dev = &usb->dev;
1337 /* Init completion, to protect for disconnect while still loading.
1338 * Necessary because of the asynchronous firmware load construction
1339 */
1340 init_completion(&devinfo->dev_init_done);
1341
1342 usb_set_intfdata(intf, devinfo);
1343
1344 /* Check that the device supports only one configuration */
1345 if (usb->descriptor.bNumConfigurations != 1) {
1346 brcmf_err("Number of configurations: %d not supported\n",
1347 usb->descriptor.bNumConfigurations);
1348 ret = -ENODEV;
1349 goto fail;
1350 }
1351
1352 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) &&
1353 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) &&
1354 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) {
1355 brcmf_err("Device class: 0x%x not supported\n",
1356 usb->descriptor.bDeviceClass);
1357 ret = -ENODEV;
1358 goto fail;
1359 }
1360
1361 desc = &intf->cur_altsetting->desc;
1362 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
1363 (desc->bInterfaceSubClass != 2) ||
1364 (desc->bInterfaceProtocol != 0xff)) {
1365 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n",
1366 desc->bInterfaceNumber, desc->bInterfaceClass,
1367 desc->bInterfaceSubClass, desc->bInterfaceProtocol);
1368 ret = -ENODEV;
1369 goto fail;
1370 }
1371
1372 num_of_eps = desc->bNumEndpoints;
1373 for (ep = 0; ep < num_of_eps; ep++) {
1374 endpoint = &intf->cur_altsetting->endpoint[ep].desc;
1375 endpoint_num = usb_endpoint_num(endpoint);
1376 if (!usb_endpoint_xfer_bulk(endpoint))
1377 continue;
1378 if (usb_endpoint_dir_in(endpoint)) {
1379 if (!devinfo->rx_pipe)
1380 devinfo->rx_pipe =
1381 usb_rcvbulkpipe(usb, endpoint_num);
1382 } else {
1383 if (!devinfo->tx_pipe)
1384 devinfo->tx_pipe =
1385 usb_sndbulkpipe(usb, endpoint_num);
1386 }
1387 }
1388 if (devinfo->rx_pipe == 0) {
1389 brcmf_err("No RX (in) Bulk EP found\n");
1390 ret = -ENODEV;
1391 goto fail;
1392 }
1393 if (devinfo->tx_pipe == 0) {
1394 brcmf_err("No TX (out) Bulk EP found\n");
1395 ret = -ENODEV;
1396 goto fail;
1397 }
1398
1399 devinfo->ifnum = desc->bInterfaceNumber;
1400
1401 if (usb->speed == USB_SPEED_SUPER_PLUS)
1402 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n");
1403 else if (usb->speed == USB_SPEED_SUPER)
1404 brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n");
1405 else if (usb->speed == USB_SPEED_HIGH)
1406 brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n");
1407 else
1408 brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n");
1409
1410 ret = brcmf_usb_probe_cb(devinfo);
1411 if (ret)
1412 goto fail;
1413
1414 /* Success */
1415 return 0;
1416
1417 fail:
1418 complete(&devinfo->dev_init_done);
1419 kfree(devinfo);
1420 usb_set_intfdata(intf, NULL);
1421 return ret;
1422 }
1423
1424 static void
1425 brcmf_usb_disconnect(struct usb_interface *intf)
1426 {
1427 struct brcmf_usbdev_info *devinfo;
1428
1429 brcmf_dbg(USB, "Enter\n");
1430 devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf);
1431
1432 if (devinfo) {
1433 wait_for_completion(&devinfo->dev_init_done);
1434 /* Make sure that devinfo still exists. Firmware probe routines
1435 * may have released the device and cleared the intfdata.
1436 */
1437 if (!usb_get_intfdata(intf))
1438 goto done;
1439
1440 brcmf_usb_disconnect_cb(devinfo);
1441 kfree(devinfo);
1442 }
1443 done:
1444 brcmf_dbg(USB, "Exit\n");
1445 }
1446
1447 /*
1448 * only need to signal the bus being down and update the state.
1449 */
1450 static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state)
1451 {
1452 struct usb_device *usb = interface_to_usbdev(intf);
1453 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1454
1455 brcmf_dbg(USB, "Enter\n");
1456 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP;
1457 if (devinfo->wowl_enabled)
1458 brcmf_cancel_all_urbs(devinfo);
1459 else
1460 brcmf_detach(&usb->dev);
1461 return 0;
1462 }
1463
1464 /*
1465 * (re-) start the bus.
1466 */
1467 static int brcmf_usb_resume(struct usb_interface *intf)
1468 {
1469 struct usb_device *usb = interface_to_usbdev(intf);
1470 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1471
1472 brcmf_dbg(USB, "Enter\n");
1473 if (!devinfo->wowl_enabled)
1474 return brcmf_attach(devinfo->dev, devinfo->settings);
1475
1476 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP;
1477 brcmf_usb_rx_fill_all(devinfo);
1478 return 0;
1479 }
1480
1481 static int brcmf_usb_reset_resume(struct usb_interface *intf)
1482 {
1483 struct usb_device *usb = interface_to_usbdev(intf);
1484 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev);
1485 struct brcmf_fw_request *fwreq;
1486 int ret;
1487
1488 brcmf_dbg(USB, "Enter\n");
1489
1490 fwreq = brcmf_usb_prepare_fw_request(devinfo);
1491 if (!fwreq)
1492 return -ENOMEM;
1493
1494 ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2);
1495 if (ret < 0)
1496 kfree(fwreq);
1497
1498 return ret;
1499 }
1500
1501 #define BRCMF_USB_DEVICE(dev_id) \
1502 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) }
1503
1504 #define LINKSYS_USB_DEVICE(dev_id) \
1505 { USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id) }
1506
1507 #define CYPRESS_USB_DEVICE(dev_id) \
1508 { USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id) }
1509
1510 static const struct usb_device_id brcmf_usb_devid_table[] = {
1511 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID),
1512 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID),
1513 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID),
1514 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID),
1515 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID),
1516 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID),
1517 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) },
1518 /* special entry for device with firmware loaded and running */
1519 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID),
1520 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID),
1521 { /* end: all zeroes */ }
1522 };
1523
1524 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1525
1526 static struct usb_driver brcmf_usbdrvr = {
1527 .name = KBUILD_MODNAME,
1528 .probe = brcmf_usb_probe,
1529 .disconnect = brcmf_usb_disconnect,
1530 .id_table = brcmf_usb_devid_table,
1531 .suspend = brcmf_usb_suspend,
1532 .resume = brcmf_usb_resume,
1533 .reset_resume = brcmf_usb_reset_resume,
1534 .disable_hub_initiated_lpm = 1,
1535 };
1536
1537 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1538 {
1539 /* device past is the usb interface so we
1540 * need to use parent here.
1541 */
1542 brcmf_dev_reset(dev->parent);
1543 return 0;
1544 }
1545
1546 void brcmf_usb_exit(void)
1547 {
1548 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1549 int ret;
1550
1551 brcmf_dbg(USB, "Enter\n");
1552 ret = driver_for_each_device(drv, NULL, NULL,
1553 brcmf_usb_reset_device);
1554 usb_deregister(&brcmf_usbdrvr);
1555 }
1556
1557 void brcmf_usb_register(void)
1558 {
1559 brcmf_dbg(USB, "Enter\n");
1560 usb_register(&brcmf_usbdrvr);
1561 }
Linux with added FPC-III support