]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c
projects / mirror_ubuntu-bionic-kernel.git / blob
? search:


a86de1a682727dd25377e84df914c8b6d3f68497
[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / broadcom / brcm80211 / brcmfmac / usb.c
1 /*
2 * Copyright (c) 2011 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include <linux/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.bin");
50 BRCMF_FW_DEF(43236B, "brcmfmac43236b.bin");
51 BRCMF_FW_DEF(43242A, "brcmfmac43242a.bin");
52 BRCMF_FW_DEF(43569, "brcmfmac43569.bin");
53 BRCMF_FW_DEF(4373, "brcmfmac4373.bin");
54
55 static 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 return NULL;
445
446 }
447
448 static void brcmf_usb_free_q(struct list_head *q, bool pending)
449 {
450 struct brcmf_usbreq *req, *next;
451 int i = 0;
452 list_for_each_entry_safe(req, next, q, list) {
453 if (!req->urb) {
454 brcmf_err("bad req\n");
455 break;
456 }
457 i++;
458 if (pending) {
459 usb_kill_urb(req->urb);
460 } else {
461 usb_free_urb(req->urb);
462 list_del_init(&req->list);
463 }
464 }
465 }
466
467 static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo,
468 struct brcmf_usbreq *req)
469 {
470 unsigned long flags;
471
472 spin_lock_irqsave(&devinfo->qlock, flags);
473 list_del_init(&req->list);
474 spin_unlock_irqrestore(&devinfo->qlock, flags);
475 }
476
477
478 static void brcmf_usb_tx_complete(struct urb *urb)
479 {
480 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
481 struct brcmf_usbdev_info *devinfo = req->devinfo;
482 unsigned long flags;
483
484 brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status,
485 req->skb);
486 brcmf_usb_del_fromq(devinfo, req);
487
488 brcmf_proto_bcdc_txcomplete(devinfo->dev, req->skb, urb->status == 0);
489 req->skb = NULL;
490 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount);
491 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
492 if (devinfo->tx_freecount > devinfo->tx_high_watermark &&
493 devinfo->tx_flowblock) {
494 brcmf_proto_bcdc_txflowblock(devinfo->dev, false);
495 devinfo->tx_flowblock = false;
496 }
497 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
498 }
499
500 static void brcmf_usb_rx_complete(struct urb *urb)
501 {
502 struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context;
503 struct brcmf_usbdev_info *devinfo = req->devinfo;
504 struct sk_buff *skb;
505
506 brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status);
507 brcmf_usb_del_fromq(devinfo, req);
508 skb = req->skb;
509 req->skb = NULL;
510
511 /* zero lenght packets indicate usb "failure". Do not refill */
512 if (urb->status != 0 || !urb->actual_length) {
513 brcmu_pkt_buf_free_skb(skb);
514 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
515 return;
516 }
517
518 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) {
519 skb_put(skb, urb->actual_length);
520 brcmf_rx_frame(devinfo->dev, skb, true);
521 brcmf_usb_rx_refill(devinfo, req);
522 } else {
523 brcmu_pkt_buf_free_skb(skb);
524 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
525 }
526 return;
527
528 }
529
530 static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo,
531 struct brcmf_usbreq *req)
532 {
533 struct sk_buff *skb;
534 int ret;
535
536 if (!req || !devinfo)
537 return;
538
539 skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu);
540 if (!skb) {
541 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
542 return;
543 }
544 req->skb = skb;
545
546 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe,
547 skb->data, skb_tailroom(skb), brcmf_usb_rx_complete,
548 req);
549 req->devinfo = devinfo;
550 brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL);
551
552 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
553 if (ret) {
554 brcmf_usb_del_fromq(devinfo, req);
555 brcmu_pkt_buf_free_skb(req->skb);
556 req->skb = NULL;
557 brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);
558 }
559 return;
560 }
561
562 static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo)
563 {
564 struct brcmf_usbreq *req;
565
566 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
567 brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state);
568 return;
569 }
570 while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL)
571 brcmf_usb_rx_refill(devinfo, req);
572 }
573
574 static void
575 brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state)
576 {
577 struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus;
578 int old_state;
579
580 brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n",
581 devinfo->bus_pub.state, state);
582
583 if (devinfo->bus_pub.state == state)
584 return;
585
586 old_state = devinfo->bus_pub.state;
587 devinfo->bus_pub.state = state;
588
589 /* update state of upper layer */
590 if (state == BRCMFMAC_USB_STATE_DOWN) {
591 brcmf_dbg(USB, "DBUS is down\n");
592 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN);
593 } else if (state == BRCMFMAC_USB_STATE_UP) {
594 brcmf_dbg(USB, "DBUS is up\n");
595 brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP);
596 } else {
597 brcmf_dbg(USB, "DBUS current state=%d\n", state);
598 }
599 }
600
601 static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb)
602 {
603 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
604 struct brcmf_usbreq *req;
605 int ret;
606 unsigned long flags;
607
608 brcmf_dbg(USB, "Enter, skb=%p\n", skb);
609 if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) {
610 ret = -EIO;
611 goto fail;
612 }
613
614 req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq,
615 &devinfo->tx_freecount);
616 if (!req) {
617 brcmf_err("no req to send\n");
618 ret = -ENOMEM;
619 goto fail;
620 }
621
622 req->skb = skb;
623 req->devinfo = devinfo;
624 usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe,
625 skb->data, skb->len, brcmf_usb_tx_complete, req);
626 req->urb->transfer_flags |= URB_ZERO_PACKET;
627 brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL);
628 ret = usb_submit_urb(req->urb, GFP_ATOMIC);
629 if (ret) {
630 brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n");
631 brcmf_usb_del_fromq(devinfo, req);
632 req->skb = NULL;
633 brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req,
634 &devinfo->tx_freecount);
635 goto fail;
636 }
637
638 spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags);
639 if (devinfo->tx_freecount < devinfo->tx_low_watermark &&
640 !devinfo->tx_flowblock) {
641 brcmf_proto_bcdc_txflowblock(dev, true);
642 devinfo->tx_flowblock = true;
643 }
644 spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags);
645 return 0;
646
647 fail:
648 return ret;
649 }
650
651
652 static int brcmf_usb_up(struct device *dev)
653 {
654 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
655
656 brcmf_dbg(USB, "Enter\n");
657 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP)
658 return 0;
659
660 /* Success, indicate devinfo is fully up */
661 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP);
662
663 if (devinfo->ctl_urb) {
664 devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0);
665 devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0);
666
667 /* CTL Write */
668 devinfo->ctl_write.bRequestType =
669 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
670 devinfo->ctl_write.bRequest = 0;
671 devinfo->ctl_write.wValue = cpu_to_le16(0);
672 devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum);
673
674 /* CTL Read */
675 devinfo->ctl_read.bRequestType =
676 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
677 devinfo->ctl_read.bRequest = 1;
678 devinfo->ctl_read.wValue = cpu_to_le16(0);
679 devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum);
680 }
681 brcmf_usb_rx_fill_all(devinfo);
682 return 0;
683 }
684
685 static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo)
686 {
687 if (devinfo->ctl_urb)
688 usb_kill_urb(devinfo->ctl_urb);
689 if (devinfo->bulk_urb)
690 usb_kill_urb(devinfo->bulk_urb);
691 brcmf_usb_free_q(&devinfo->tx_postq, true);
692 brcmf_usb_free_q(&devinfo->rx_postq, true);
693 }
694
695 static void brcmf_usb_down(struct device *dev)
696 {
697 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
698
699 brcmf_dbg(USB, "Enter\n");
700 if (devinfo == NULL)
701 return;
702
703 if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN)
704 return;
705
706 brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN);
707
708 brcmf_cancel_all_urbs(devinfo);
709 }
710
711 static void
712 brcmf_usb_sync_complete(struct urb *urb)
713 {
714 struct brcmf_usbdev_info *devinfo =
715 (struct brcmf_usbdev_info *)urb->context;
716
717 devinfo->ctl_completed = true;
718 brcmf_usb_ioctl_resp_wake(devinfo);
719 }
720
721 static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd,
722 void *buffer, int buflen)
723 {
724 int ret;
725 char *tmpbuf;
726 u16 size;
727
728 if ((!devinfo) || (devinfo->ctl_urb == NULL))
729 return -EINVAL;
730
731 tmpbuf = kmalloc(buflen, GFP_ATOMIC);
732 if (!tmpbuf)
733 return -ENOMEM;
734
735 size = buflen;
736 devinfo->ctl_urb->transfer_buffer_length = size;
737
738 devinfo->ctl_read.wLength = cpu_to_le16p(&size);
739 devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
740 USB_RECIP_INTERFACE;
741 devinfo->ctl_read.bRequest = cmd;
742
743 usb_fill_control_urb(devinfo->ctl_urb,
744 devinfo->usbdev,
745 usb_rcvctrlpipe(devinfo->usbdev, 0),
746 (unsigned char *) &devinfo->ctl_read,
747 (void *) tmpbuf, size,
748 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
749
750 devinfo->ctl_completed = false;
751 ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC);
752 if (ret < 0) {
753 brcmf_err("usb_submit_urb failed %d\n", ret);
754 goto finalize;
755 }
756
757 if (!brcmf_usb_ioctl_resp_wait(devinfo)) {
758 usb_kill_urb(devinfo->ctl_urb);
759 ret = -ETIMEDOUT;
760 } else {
761 memcpy(buffer, tmpbuf, buflen);
762 }
763
764 finalize:
765 kfree(tmpbuf);
766 return ret;
767 }
768
769 static bool
770 brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo)
771 {
772 struct bootrom_id_le id;
773 u32 chipid, chiprev;
774
775 brcmf_dbg(USB, "Enter\n");
776
777 if (devinfo == NULL)
778 return false;
779
780 /* Check if firmware downloaded already by querying runtime ID */
781 id.chip = cpu_to_le32(0xDEAD);
782 brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
783
784 chipid = le32_to_cpu(id.chip);
785 chiprev = le32_to_cpu(id.chiprev);
786
787 if ((chipid & 0x4300) == 0x4300)
788 brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev);
789 else
790 brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev);
791 if (chipid == BRCMF_POSTBOOT_ID) {
792 brcmf_dbg(USB, "firmware already downloaded\n");
793 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
794 return false;
795 } else {
796 devinfo->bus_pub.devid = chipid;
797 devinfo->bus_pub.chiprev = chiprev;
798 }
799 return true;
800 }
801
802 static int
803 brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo)
804 {
805 struct bootrom_id_le id;
806 u32 loop_cnt;
807 int err;
808
809 brcmf_dbg(USB, "Enter\n");
810
811 loop_cnt = 0;
812 do {
813 mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT);
814 loop_cnt++;
815 id.chip = cpu_to_le32(0xDEAD); /* Get the ID */
816 err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id));
817 if ((err) && (err != -ETIMEDOUT))
818 return err;
819 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID))
820 break;
821 } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT);
822
823 if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) {
824 brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n",
825 le32_to_cpu(id.chip), le32_to_cpu(id.chiprev));
826
827 brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id));
828 return 0;
829 } else {
830 brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n",
831 BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt);
832 return -EINVAL;
833 }
834 }
835
836
837 static int
838 brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len)
839 {
840 int ret;
841
842 if ((devinfo == NULL) || (devinfo->bulk_urb == NULL))
843 return -EINVAL;
844
845 /* Prepare the URB */
846 usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev,
847 devinfo->tx_pipe, buffer, len,
848 (usb_complete_t)brcmf_usb_sync_complete, devinfo);
849
850 devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET;
851
852 devinfo->ctl_completed = false;
853 ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC);
854 if (ret) {
855 brcmf_err("usb_submit_urb failed %d\n", ret);
856 return ret;
857 }
858 ret = brcmf_usb_ioctl_resp_wait(devinfo);
859 return (ret == 0);
860 }
861
862 static int
863 brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen)
864 {
865 unsigned int sendlen, sent, dllen;
866 char *bulkchunk = NULL, *dlpos;
867 struct rdl_state_le state;
868 u32 rdlstate, rdlbytes;
869 int err = 0;
870
871 brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen);
872
873 bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC);
874 if (bulkchunk == NULL) {
875 err = -ENOMEM;
876 goto fail;
877 }
878
879 /* 1) Prepare USB boot loader for runtime image */
880 brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state));
881
882 rdlstate = le32_to_cpu(state.state);
883 rdlbytes = le32_to_cpu(state.bytes);
884
885 /* 2) Check we are in the Waiting state */
886 if (rdlstate != DL_WAITING) {
887 brcmf_err("Failed to DL_START\n");
888 err = -EINVAL;
889 goto fail;
890 }
891 sent = 0;
892 dlpos = fw;
893 dllen = fwlen;
894
895 /* Get chip id and rev */
896 while (rdlbytes != dllen) {
897 /* Wait until the usb device reports it received all
898 * the bytes we sent */
899 if ((rdlbytes == sent) && (rdlbytes != dllen)) {
900 if ((dllen-sent) < TRX_RDL_CHUNK)
901 sendlen = dllen-sent;
902 else
903 sendlen = TRX_RDL_CHUNK;
904
905 /* simply avoid having to send a ZLP by ensuring we
906 * never have an even
907 * multiple of 64
908 */
909 if (!(sendlen % 64))
910 sendlen -= 4;
911
912 /* send data */
913 memcpy(bulkchunk, dlpos, sendlen);
914 if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk,
915 sendlen)) {
916 brcmf_err("send_bulk failed\n");
917 err = -EINVAL;
918 goto fail;
919 }
920
921 dlpos += sendlen;
922 sent += sendlen;
923 }
924 err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state,
925 sizeof(state));
926 if (err) {
927 brcmf_err("DL_GETSTATE Failed\n");
928 goto fail;
929 }
930
931 rdlstate = le32_to_cpu(state.state);
932 rdlbytes = le32_to_cpu(state.bytes);
933
934 /* restart if an error is reported */
935 if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) {
936 brcmf_err("Bad Hdr or Bad CRC state %d\n",
937 rdlstate);
938 err = -EINVAL;
939 goto fail;
940 }
941 }
942
943 fail:
944 kfree(bulkchunk);
945 brcmf_dbg(USB, "Exit, err=%d\n", err);
946 return err;
947 }
948
949 static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len)
950 {
951 int err;
952
953 brcmf_dbg(USB, "Enter\n");
954
955 if (devinfo == NULL)
956 return -EINVAL;
957
958 if (devinfo->bus_pub.devid == 0xDEAD)
959 return -EINVAL;
960
961 err = brcmf_usb_dl_writeimage(devinfo, fw, len);
962 if (err == 0)
963 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE;
964 else
965 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL;
966 brcmf_dbg(USB, "Exit, err=%d\n", err);
967
968 return err;
969 }
970
971 static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo)
972 {
973 struct rdl_state_le state;
974
975 brcmf_dbg(USB, "Enter\n");
976 if (!devinfo)
977 return -EINVAL;
978
979 if (devinfo->bus_pub.devid == 0xDEAD)
980 return -EINVAL;
981
982 /* Check we are runnable */
983 state.state = 0;
984 brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state));
985
986 /* Start the image */
987 if (state.state == cpu_to_le32(DL_RUNNABLE)) {
988 if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state)))
989 return -ENODEV;
990 if (brcmf_usb_resetcfg(devinfo))
991 return -ENODEV;
992 /* The Dongle may go for re-enumeration. */
993 } else {
994 brcmf_err("Dongle not runnable\n");
995 return -EINVAL;
996 }
997 brcmf_dbg(USB, "Exit\n");
998 return 0;
999 }
1000
1001 static int
1002 brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo)
1003 {
1004 int err;
1005
1006 brcmf_dbg(USB, "Enter\n");
1007 if (devinfo == NULL)
1008 return -ENODEV;
1009
1010 if (!devinfo->image) {
1011 brcmf_err("No firmware!\n");
1012 return -ENOENT;
1013 }
1014
1015 err = brcmf_usb_dlstart(devinfo,
1016 (u8 *)devinfo->image, devinfo->image_len);
1017 if (err == 0)
1018 err = brcmf_usb_dlrun(devinfo);
1019 return err;
1020 }
1021
1022
1023 static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo)
1024 {
1025 brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo);
1026
1027 /* free the URBS */
1028 brcmf_usb_free_q(&devinfo->rx_freeq, false);
1029 brcmf_usb_free_q(&devinfo->tx_freeq, false);
1030
1031 usb_free_urb(devinfo->ctl_urb);
1032 usb_free_urb(devinfo->bulk_urb);
1033
1034 kfree(devinfo->tx_reqs);
1035 kfree(devinfo->rx_reqs);
1036
1037 if (devinfo->settings)
1038 brcmf_release_module_param(devinfo->settings);
1039 }
1040
1041
1042 static int check_file(const u8 *headers)
1043 {
1044 struct trx_header_le *trx;
1045 int actual_len = -1;
1046
1047 brcmf_dbg(USB, "Enter\n");
1048 /* Extract trx header */
1049 trx = (struct trx_header_le *) headers;
1050 if (trx->magic != cpu_to_le32(TRX_MAGIC))
1051 return -1;
1052
1053 headers += sizeof(struct trx_header_le);
1054
1055 if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) {
1056 actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]);
1057 return actual_len + sizeof(struct trx_header_le);
1058 }
1059 return -1;
1060 }
1061
1062
1063 static
1064 struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo,
1065 int nrxq, int ntxq)
1066 {
1067 brcmf_dbg(USB, "Enter\n");
1068
1069 devinfo->bus_pub.nrxq = nrxq;
1070 devinfo->rx_low_watermark = nrxq / 2;
1071 devinfo->bus_pub.devinfo = devinfo;
1072 devinfo->bus_pub.ntxq = ntxq;
1073 devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN;
1074
1075 /* flow control when too many tx urbs posted */
1076 devinfo->tx_low_watermark = ntxq / 4;
1077 devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3;
1078 devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE;
1079
1080 /* Initialize other structure content */
1081 init_waitqueue_head(&devinfo->ioctl_resp_wait);
1082
1083 /* Initialize the spinlocks */
1084 spin_lock_init(&devinfo->qlock);
1085 spin_lock_init(&devinfo->tx_flowblock_lock);
1086
1087 INIT_LIST_HEAD(&devinfo->rx_freeq);
1088 INIT_LIST_HEAD(&devinfo->rx_postq);
1089
1090 INIT_LIST_HEAD(&devinfo->tx_freeq);
1091 INIT_LIST_HEAD(&devinfo->tx_postq);
1092
1093 devinfo->tx_flowblock = false;
1094
1095 devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq);
1096 if (!devinfo->rx_reqs)
1097 goto error;
1098
1099 devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq);
1100 if (!devinfo->tx_reqs)
1101 goto error;
1102 devinfo->tx_freecount = ntxq;
1103
1104 devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC);
1105 if (!devinfo->ctl_urb)
1106 goto error;
1107 devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC);
1108 if (!devinfo->bulk_urb)
1109 goto error;
1110
1111 return &devinfo->bus_pub;
1112
1113 error:
1114 brcmf_err("failed!\n");
1115 brcmf_usb_detach(devinfo);
1116 return NULL;
1117 }
1118
1119 static void brcmf_usb_wowl_config(struct device *dev, bool enabled)
1120 {
1121 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
1122
1123 brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled);
1124 devinfo->wowl_enabled = enabled;
1125 if (enabled)
1126 device_set_wakeup_enable(devinfo->dev, true);
1127 else
1128 device_set_wakeup_enable(devinfo->dev, false);
1129 }
1130
1131 static int brcmf_usb_get_fwname(struct device *dev, u32 chip, u32 chiprev,
1132 u8 *fw_name)
1133 {
1134 struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev);
1135 int ret = 0;
1136
1137 if (devinfo->fw_name[0] != '\0')
1138 strlcpy(fw_name, devinfo->fw_name, BRCMF_FW_NAME_LEN);
1139 else
1140 ret = brcmf_fw_map_chip_to_name(chip, chiprev,
1141 brcmf_usb_fwnames,
1142 ARRAY_SIZE(brcmf_usb_fwnames),
1143 fw_name, NULL);
1144
1145 return ret;
1146 }
1147
1148 static const struct brcmf_bus_ops brcmf_usb_bus_ops = {
1149 .txdata = brcmf_usb_tx,
1150 .stop = brcmf_usb_down,
1151 .txctl = brcmf_usb_tx_ctlpkt,
1152 .rxctl = brcmf_usb_rx_ctlpkt,
1153 .wowl_config = brcmf_usb_wowl_config,
1154 .get_fwname = brcmf_usb_get_fwname,
1155 };
1156
1157 static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo)
1158 {
1159 int ret;
1160
1161 /* Attach to the common driver interface */
1162 ret = brcmf_attach(devinfo->dev, devinfo->settings);
1163 if (ret) {
1164 brcmf_err("brcmf_attach failed\n");
1165 return ret;
1166 }
1167
1168 ret = brcmf_usb_up(devinfo->dev);
1169 if (ret)
1170 goto fail;
1171
1172 ret = brcmf_bus_started(devinfo->dev);
1173 if (ret)
1174 goto fail;
1175
1176 return 0;
1177 fail:
1178 brcmf_detach(devinfo->dev);
1179 return ret;
1180 }
1181
1182 static void brcmf_usb_probe_phase2(struct device *dev, int ret,
1183 const struct firmware *fw,
1184 void *nvram, u32 nvlen)
1185 {
1186 struct brcmf_bus *bus = dev_get_drvdata(dev);
1187 struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo;
1188
1189 if (ret)
1190 goto error;
1191
1192 brcmf_dbg(USB, "Start fw downloading\n");
1193
1194 ret = check_file(fw->data);
1195 if (ret < 0) {
1196 brcmf_err("invalid firmware\n");
1197 release_firmware(fw);
1198 goto error;
1199 }
1200
1201 devinfo->image = fw->data;
1202 devinfo->image_len = fw->size;
1203
1204 ret = brcmf_usb_fw_download(devinfo);
1205 release_firmware(fw);
1206 if (ret)
1207 goto error;
1208
1209 ret = brcmf_usb_bus_setup(devinfo);
1210 if (ret)
1211 goto error;
1212
1213 complete(&devinfo->dev_init_done);
1214 return;
1215 error:
1216 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret);
1217 complete(&devinfo->dev_init_done);
1218 device_release_driver(dev);
1219 }
1220
1221 static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo)
1222 {
1223 struct brcmf_bus *bus = NULL;
1224 struct brcmf_usbdev *bus_pub = NULL;
1225 struct device *dev = devinfo->dev;
1226 int ret;
1227
1228 brcmf_dbg(USB, "Enter\n");
1229 bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ);
1230 if (!bus_pub)
1231 return -ENODEV;
1232
1233 bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC);
1234 if (!bus) {
1235 ret = -ENOMEM;
1236 goto fail;
1237 }
1238
1239 bus->dev = dev;
1240 bus_pub->bus = bus;
1241 bus->bus_priv.usb = bus_pub;
1242 dev_set_drvdata(dev, bus);
1243 bus->ops = &brcmf_usb_bus_ops;
1244 bus->proto_type = BRCMF_PROTO_BCDC;
1245 bus->always_use_fws_queue = true;
1246 #ifdef CONFIG_PM
1247 bus->wowl_supported = true;
1248 #endif
1249
1250 devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB,
1251 bus_pub->devid,
1252 bus_pub->chiprev);
1253 if (!devinfo->settings) {
1254 ret = -ENOMEM;
1255 goto fail;
1256 }
1257
1258 if (!brcmf_usb_dlneeded(devinfo)) {
1259 ret = brcmf_usb_bus_setup(devinfo);
1260 if (ret)
1261 goto fail;
1262 /* we are done */
1263 complete(&devinfo->dev_init_done);
1264 return 0;
1265 }
1266 bus->chip = bus_pub->devid;
1267 bus->chiprev = bus_pub->chiprev;
1268
1269 ret = brcmf_fw_map_chip_to_name(bus_pub->devid, bus_pub->chiprev,
1270 brcmf_usb_fwnames,
1271 ARRAY_SIZE(brcmf_usb_fwnames),
1272 devinfo->fw_name, NULL);
1273 if (ret)
1274 goto fail;
1275
1276 /* request firmware here */
1277 ret = brcmf_fw_get_firmwares(dev, 0, devinfo->fw_name, NULL,
1278 brcmf_usb_probe_phase2);
1279 if (ret) {
1280 brcmf_err("firmware request failed: %d\n", ret);
1281 goto fail;
1282 }
1283
1284 return 0;
1285
1286 fail:
1287 /* Release resources in reverse order */
1288 kfree(bus);
1289 brcmf_usb_detach(devinfo);
1290 return ret;
1291 }
1292
1293 static void
1294 brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo)
1295 {
1296 if (!devinfo)
1297 return;
1298 brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo);
1299
1300 brcmf_detach(devinfo->dev);
1301 kfree(devinfo->bus_pub.bus);
1302 brcmf_usb_detach(devinfo);
1303 }
1304
1305 static int
1306 brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1307 {
1308 struct usb_device *usb = interface_to_usbdev(intf);
1309 struct brcmf_usbdev_info *devinfo;
1310 struct usb_interface_descriptor *desc;
1311 struct usb_endpoint_descriptor *endpoint;
1312 int ret = 0;
1313 u32 num_of_eps;
1314 u8 endpoint_num, ep;
1315
1316 brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct);
1317
1318 devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC);
1319 if (devinfo == NULL)
1320 return -ENOMEM;
1321
1322 devinfo->usbdev = usb;
1323 devinfo->dev = &usb->dev;
1324 /* Init completion, to protect for disconnect while still loading.
1325 * Necessary because of the asynchronous firmware load construction
1326 */
1327 init_completion(&devinfo->dev_init_done);
1328
1329 usb_set_intfdata(intf, devinfo);
1330
1331 /* Check that the device supports only one configuration */
1332 if (usb->descriptor.bNumConfigurations != 1) {
1333 brcmf_err("Number of configurations: %d not supported\n",
1334 usb->descriptor.bNumConfigurations);
1335 ret = -ENODEV;
1336 goto fail;
1337 }
1338
1339 if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) &&
1340 (usb->descriptor.bDeviceClass != USB_CLASS_MISC) &&
1341 (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) {
1342 brcmf_err("Device class: 0x%x not supported\n",
1343 usb->descriptor.bDeviceClass);
1344 ret = -ENODEV;
1345 goto fail;
1346 }
1347
1348 desc = &intf->altsetting[0].desc;
1349 if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
1350 (desc->bInterfaceSubClass != 2) ||
1351 (desc->bInterfaceProtocol != 0xff)) {
1352 brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n",
1353 desc->bInterfaceNumber, desc->bInterfaceClass,
1354 desc->bInterfaceSubClass, desc->bInterfaceProtocol);
1355 ret = -ENODEV;
1356 goto fail;
1357 }
1358
1359 num_of_eps = desc->bNumEndpoints;
1360 for (ep = 0; ep < num_of_eps; ep++) {
1361 endpoint = &intf->altsetting[0].endpoint[ep].desc;
1362 endpoint_num = usb_endpoint_num(endpoint);
1363 if (!usb_endpoint_xfer_bulk(endpoint))
1364 continue;
1365 if (usb_endpoint_dir_in(endpoint)) {
1366 if (!devinfo->rx_pipe)
1367 devinfo->rx_pipe =
1368 usb_rcvbulkpipe(usb, endpoint_num);
1369 } else {
1370 if (!devinfo->tx_pipe)
1371 devinfo->tx_pipe =
1372 usb_sndbulkpipe(usb, endpoint_num);
1373 }
1374 }
1375 if (devinfo->rx_pipe == 0) {
1376 brcmf_err("No RX (in) Bulk EP found\n");
1377 ret = -ENODEV;
1378 goto fail;
1379 }
1380 if (devinfo->tx_pipe == 0) {
1381 brcmf_err("No TX (out) Bulk EP found\n");
1382 ret = -ENODEV;
1383 goto fail;
1384 }
1385
1386 devinfo->ifnum = desc->bInterfaceNumber;
1387
1388 if (usb->speed == USB_SPEED_SUPER_PLUS)
1389 brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n");
1390 else 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 complete(&devinfo->dev_init_done);
1406 kfree(devinfo);
1407 usb_set_intfdata(intf, NULL);
1408 return ret;
1409 }
1410
1411 static void
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 wait_for_completion(&devinfo->dev_init_done);
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 */
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 */
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
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, devinfo->fw_name, NULL,
1476 brcmf_usb_probe_phase2);
1477 }
1478
1479 #define BRCMF_USB_DEVICE(dev_id) \
1480 { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) }
1481
1482 #define LINKSYS_USB_DEVICE(dev_id) \
1483 { USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id) }
1484
1485 #define CYPRESS_USB_DEVICE(dev_id) \
1486 { USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id) }
1487
1488 static const struct usb_device_id brcmf_usb_devid_table[] = {
1489 BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID),
1490 BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID),
1491 BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID),
1492 BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID),
1493 LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID),
1494 CYPRESS_USB_DEVICE(CY_USB_4373_DEVICE_ID),
1495 { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) },
1496 /* special entry for device with firmware loaded and running */
1497 BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID),
1498 CYPRESS_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID),
1499 { /* end: all zeroes */ }
1500 };
1501
1502 MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table);
1503
1504 static struct usb_driver brcmf_usbdrvr = {
1505 .name = KBUILD_MODNAME,
1506 .probe = brcmf_usb_probe,
1507 .disconnect = brcmf_usb_disconnect,
1508 .id_table = brcmf_usb_devid_table,
1509 .suspend = brcmf_usb_suspend,
1510 .resume = brcmf_usb_resume,
1511 .reset_resume = brcmf_usb_reset_resume,
1512 .disable_hub_initiated_lpm = 1,
1513 };
1514
1515 static int brcmf_usb_reset_device(struct device *dev, void *notused)
1516 {
1517 /* device past is the usb interface so we
1518 * need to use parent here.
1519 */
1520 brcmf_dev_reset(dev->parent);
1521 return 0;
1522 }
1523
1524 void brcmf_usb_exit(void)
1525 {
1526 struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver;
1527 int ret;
1528
1529 brcmf_dbg(USB, "Enter\n");
1530 ret = driver_for_each_device(drv, NULL, NULL,
1531 brcmf_usb_reset_device);
1532 usb_deregister(&brcmf_usbdrvr);
1533 }
1534
1535 void brcmf_usb_register(void)
1536 {
1537 brcmf_dbg(USB, "Enter\n");
1538 usb_register(&brcmf_usbdrvr);
1539 }
ubuntu-bionic-kernel mirror