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Merge remote-tracking branches 'spi/topic/spidev-test', 'spi/topic/ti-qspi', 'spi...
[deliverable/linux.git] / drivers / net / wireless / marvell / libertas_tf / if_usb.c
1 /*
2 * Copyright (C) 2008, cozybit Inc.
3 * Copyright (C) 2003-2006, Marvell International Ltd.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 */
10 #define DRV_NAME "lbtf_usb"
11
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14 #include "libertas_tf.h"
15 #include "if_usb.h"
16
17 #include <linux/delay.h>
18 #include <linux/module.h>
19 #include <linux/firmware.h>
20 #include <linux/netdevice.h>
21 #include <linux/slab.h>
22 #include <linux/usb.h>
23
24 #define INSANEDEBUG 0
25 #define lbtf_deb_usb2(...) do { if (INSANEDEBUG) lbtf_deb_usbd(__VA_ARGS__); } while (0)
26
27 #define MESSAGE_HEADER_LEN 4
28
29 static char *lbtf_fw_name = "lbtf_usb.bin";
30 module_param_named(fw_name, lbtf_fw_name, charp, 0644);
31
32 MODULE_FIRMWARE("lbtf_usb.bin");
33
34 static struct usb_device_id if_usb_table[] = {
35 /* Enter the device signature inside */
36 { USB_DEVICE(0x1286, 0x2001) },
37 { USB_DEVICE(0x05a3, 0x8388) },
38 {} /* Terminating entry */
39 };
40
41 MODULE_DEVICE_TABLE(usb, if_usb_table);
42
43 static void if_usb_receive(struct urb *urb);
44 static void if_usb_receive_fwload(struct urb *urb);
45 static int if_usb_prog_firmware(struct if_usb_card *cardp);
46 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
47 uint8_t *payload, uint16_t nb);
48 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
49 uint16_t nb, u8 data);
50 static void if_usb_free(struct if_usb_card *cardp);
51 static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
52 static int if_usb_reset_device(struct if_usb_card *cardp);
53
54 /**
55 * if_usb_wrike_bulk_callback - call back to handle URB status
56 *
57 * @param urb pointer to urb structure
58 */
59 static void if_usb_write_bulk_callback(struct urb *urb)
60 {
61 if (urb->status != 0) {
62 /* print the failure status number for debug */
63 pr_info("URB in failure status: %d\n", urb->status);
64 } else {
65 lbtf_deb_usb2(&urb->dev->dev, "URB status is successful\n");
66 lbtf_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
67 urb->actual_length);
68 }
69 }
70
71 /**
72 * if_usb_free - free tx/rx urb, skb and rx buffer
73 *
74 * @param cardp pointer if_usb_card
75 */
76 static void if_usb_free(struct if_usb_card *cardp)
77 {
78 lbtf_deb_enter(LBTF_DEB_USB);
79
80 /* Unlink tx & rx urb */
81 usb_kill_urb(cardp->tx_urb);
82 usb_kill_urb(cardp->rx_urb);
83 usb_kill_urb(cardp->cmd_urb);
84
85 usb_free_urb(cardp->tx_urb);
86 cardp->tx_urb = NULL;
87
88 usb_free_urb(cardp->rx_urb);
89 cardp->rx_urb = NULL;
90
91 usb_free_urb(cardp->cmd_urb);
92 cardp->cmd_urb = NULL;
93
94 kfree(cardp->ep_out_buf);
95 cardp->ep_out_buf = NULL;
96
97 lbtf_deb_leave(LBTF_DEB_USB);
98 }
99
100 static void if_usb_setup_firmware(struct lbtf_private *priv)
101 {
102 struct if_usb_card *cardp = priv->card;
103 struct cmd_ds_set_boot2_ver b2_cmd;
104
105 lbtf_deb_enter(LBTF_DEB_USB);
106
107 if_usb_submit_rx_urb(cardp);
108 b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
109 b2_cmd.action = 0;
110 b2_cmd.version = cardp->boot2_version;
111
112 if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
113 lbtf_deb_usb("Setting boot2 version failed\n");
114
115 lbtf_deb_leave(LBTF_DEB_USB);
116 }
117
118 static void if_usb_fw_timeo(unsigned long priv)
119 {
120 struct if_usb_card *cardp = (void *)priv;
121
122 lbtf_deb_enter(LBTF_DEB_USB);
123 if (!cardp->fwdnldover) {
124 /* Download timed out */
125 cardp->priv->surpriseremoved = 1;
126 pr_err("Download timed out\n");
127 } else {
128 lbtf_deb_usb("Download complete, no event. Assuming success\n");
129 }
130 wake_up(&cardp->fw_wq);
131 lbtf_deb_leave(LBTF_DEB_USB);
132 }
133
134 /**
135 * if_usb_probe - sets the configuration values
136 *
137 * @ifnum interface number
138 * @id pointer to usb_device_id
139 *
140 * Returns: 0 on success, error code on failure
141 */
142 static int if_usb_probe(struct usb_interface *intf,
143 const struct usb_device_id *id)
144 {
145 struct usb_device *udev;
146 struct usb_host_interface *iface_desc;
147 struct usb_endpoint_descriptor *endpoint;
148 struct lbtf_private *priv;
149 struct if_usb_card *cardp;
150 int i;
151
152 lbtf_deb_enter(LBTF_DEB_USB);
153 udev = interface_to_usbdev(intf);
154
155 cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
156 if (!cardp)
157 goto error;
158
159 setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
160 init_waitqueue_head(&cardp->fw_wq);
161
162 cardp->udev = udev;
163 iface_desc = intf->cur_altsetting;
164
165 lbtf_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
166 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
167 le16_to_cpu(udev->descriptor.bcdUSB),
168 udev->descriptor.bDeviceClass,
169 udev->descriptor.bDeviceSubClass,
170 udev->descriptor.bDeviceProtocol);
171
172 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
173 endpoint = &iface_desc->endpoint[i].desc;
174 if (usb_endpoint_is_bulk_in(endpoint)) {
175 cardp->ep_in_size =
176 le16_to_cpu(endpoint->wMaxPacketSize);
177 cardp->ep_in = usb_endpoint_num(endpoint);
178
179 lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n",
180 cardp->ep_in);
181 lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n",
182 cardp->ep_in_size);
183 } else if (usb_endpoint_is_bulk_out(endpoint)) {
184 cardp->ep_out_size =
185 le16_to_cpu(endpoint->wMaxPacketSize);
186 cardp->ep_out = usb_endpoint_num(endpoint);
187
188 lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n",
189 cardp->ep_out);
190 lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n",
191 cardp->ep_out_size);
192 }
193 }
194 if (!cardp->ep_out_size || !cardp->ep_in_size) {
195 lbtf_deb_usbd(&udev->dev, "Endpoints not found\n");
196 /* Endpoints not found */
197 goto dealloc;
198 }
199
200 cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
201 if (!cardp->rx_urb) {
202 lbtf_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
203 goto dealloc;
204 }
205
206 cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
207 if (!cardp->tx_urb) {
208 lbtf_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
209 goto dealloc;
210 }
211
212 cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
213 if (!cardp->cmd_urb) {
214 lbtf_deb_usbd(&udev->dev, "Cmd URB allocation failed\n");
215 goto dealloc;
216 }
217
218 cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
219 GFP_KERNEL);
220 if (!cardp->ep_out_buf) {
221 lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n");
222 goto dealloc;
223 }
224
225 priv = lbtf_add_card(cardp, &udev->dev);
226 if (!priv)
227 goto dealloc;
228
229 cardp->priv = priv;
230
231 priv->hw_host_to_card = if_usb_host_to_card;
232 priv->hw_prog_firmware = if_usb_prog_firmware;
233 priv->hw_reset_device = if_usb_reset_device;
234 cardp->boot2_version = udev->descriptor.bcdDevice;
235
236 usb_get_dev(udev);
237 usb_set_intfdata(intf, cardp);
238
239 return 0;
240
241 dealloc:
242 if_usb_free(cardp);
243 error:
244 lbtf_deb_leave(LBTF_DEB_MAIN);
245 return -ENOMEM;
246 }
247
248 /**
249 * if_usb_disconnect - free resource and cleanup
250 *
251 * @intf USB interface structure
252 */
253 static void if_usb_disconnect(struct usb_interface *intf)
254 {
255 struct if_usb_card *cardp = usb_get_intfdata(intf);
256 struct lbtf_private *priv = cardp->priv;
257
258 lbtf_deb_enter(LBTF_DEB_MAIN);
259
260 if_usb_reset_device(cardp);
261
262 if (priv)
263 lbtf_remove_card(priv);
264
265 /* Unlink and free urb */
266 if_usb_free(cardp);
267
268 usb_set_intfdata(intf, NULL);
269 usb_put_dev(interface_to_usbdev(intf));
270
271 lbtf_deb_leave(LBTF_DEB_MAIN);
272 }
273
274 /**
275 * if_usb_send_fw_pkt - This function downloads the FW
276 *
277 * @priv pointer to struct lbtf_private
278 *
279 * Returns: 0
280 */
281 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
282 {
283 struct fwdata *fwdata = cardp->ep_out_buf;
284 u8 *firmware = (u8 *) cardp->fw->data;
285
286 lbtf_deb_enter(LBTF_DEB_FW);
287
288 /* If we got a CRC failure on the last block, back
289 up and retry it */
290 if (!cardp->CRC_OK) {
291 cardp->totalbytes = cardp->fwlastblksent;
292 cardp->fwseqnum--;
293 }
294
295 lbtf_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
296 cardp->totalbytes);
297
298 /* struct fwdata (which we sent to the card) has an
299 extra __le32 field in between the header and the data,
300 which is not in the struct fwheader in the actual
301 firmware binary. Insert the seqnum in the middle... */
302 memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
303 sizeof(struct fwheader));
304
305 cardp->fwlastblksent = cardp->totalbytes;
306 cardp->totalbytes += sizeof(struct fwheader);
307
308 memcpy(fwdata->data, &firmware[cardp->totalbytes],
309 le32_to_cpu(fwdata->hdr.datalength));
310
311 lbtf_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
312 le32_to_cpu(fwdata->hdr.datalength));
313
314 fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
315 cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
316
317 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
318 le32_to_cpu(fwdata->hdr.datalength), 0);
319
320 if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
321 lbtf_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
322 lbtf_deb_usb2(&cardp->udev->dev,
323 "seqnum = %d totalbytes = %d\n",
324 cardp->fwseqnum, cardp->totalbytes);
325 } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
326 lbtf_deb_usb2(&cardp->udev->dev,
327 "Host has finished FW downloading\n");
328 lbtf_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n");
329
330 /* Host has finished FW downloading
331 * Donwloading FW JUMP BLOCK
332 */
333 cardp->fwfinalblk = 1;
334 }
335
336 lbtf_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
337 cardp->totalbytes);
338
339 lbtf_deb_leave(LBTF_DEB_FW);
340 return 0;
341 }
342
343 static int if_usb_reset_device(struct if_usb_card *cardp)
344 {
345 struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
346 int ret;
347
348 lbtf_deb_enter(LBTF_DEB_USB);
349
350 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
351
352 cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
353 cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
354 cmd->hdr.result = cpu_to_le16(0);
355 cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
356 cmd->action = cpu_to_le16(CMD_ACT_HALT);
357 usb_tx_block(cardp, cardp->ep_out_buf,
358 4 + sizeof(struct cmd_ds_802_11_reset), 0);
359
360 msleep(100);
361 ret = usb_reset_device(cardp->udev);
362 msleep(100);
363
364 lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
365
366 return ret;
367 }
368
369 /**
370 * usb_tx_block - transfer data to the device
371 *
372 * @priv pointer to struct lbtf_private
373 * @payload pointer to payload data
374 * @nb data length
375 * @data non-zero for data, zero for commands
376 *
377 * Returns: 0 on success, nonzero otherwise.
378 */
379 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
380 uint16_t nb, u8 data)
381 {
382 int ret = -1;
383 struct urb *urb;
384
385 lbtf_deb_enter(LBTF_DEB_USB);
386 /* check if device is removed */
387 if (cardp->priv->surpriseremoved) {
388 lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n");
389 goto tx_ret;
390 }
391
392 if (data)
393 urb = cardp->tx_urb;
394 else
395 urb = cardp->cmd_urb;
396
397 usb_fill_bulk_urb(urb, cardp->udev,
398 usb_sndbulkpipe(cardp->udev,
399 cardp->ep_out),
400 payload, nb, if_usb_write_bulk_callback, cardp);
401
402 urb->transfer_flags |= URB_ZERO_PACKET;
403
404 if (usb_submit_urb(urb, GFP_ATOMIC)) {
405 lbtf_deb_usbd(&cardp->udev->dev,
406 "usb_submit_urb failed: %d\n", ret);
407 goto tx_ret;
408 }
409
410 lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
411
412 ret = 0;
413
414 tx_ret:
415 lbtf_deb_leave(LBTF_DEB_USB);
416 return ret;
417 }
418
419 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
420 void (*callbackfn)(struct urb *urb))
421 {
422 struct sk_buff *skb;
423 int ret = -1;
424
425 lbtf_deb_enter(LBTF_DEB_USB);
426
427 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
428 if (!skb) {
429 pr_err("No free skb\n");
430 lbtf_deb_leave(LBTF_DEB_USB);
431 return -1;
432 }
433
434 cardp->rx_skb = skb;
435
436 /* Fill the receive configuration URB and initialise the Rx call back */
437 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
438 usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
439 skb_tail_pointer(skb),
440 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
441
442 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
443
444 lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n",
445 cardp->rx_urb);
446 ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC);
447 if (ret) {
448 lbtf_deb_usbd(&cardp->udev->dev,
449 "Submit Rx URB failed: %d\n", ret);
450 kfree_skb(skb);
451 cardp->rx_skb = NULL;
452 lbtf_deb_leave(LBTF_DEB_USB);
453 return -1;
454 } else {
455 lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
456 lbtf_deb_leave(LBTF_DEB_USB);
457 return 0;
458 }
459 }
460
461 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
462 {
463 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
464 }
465
466 static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
467 {
468 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
469 }
470
471 static void if_usb_receive_fwload(struct urb *urb)
472 {
473 struct if_usb_card *cardp = urb->context;
474 struct sk_buff *skb = cardp->rx_skb;
475 struct fwsyncheader *syncfwheader;
476 struct bootcmdresp bcmdresp;
477
478 lbtf_deb_enter(LBTF_DEB_USB);
479 if (urb->status) {
480 lbtf_deb_usbd(&cardp->udev->dev,
481 "URB status is failed during fw load\n");
482 kfree_skb(skb);
483 lbtf_deb_leave(LBTF_DEB_USB);
484 return;
485 }
486
487 if (cardp->fwdnldover) {
488 __le32 *tmp = (__le32 *)(skb->data);
489
490 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
491 tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
492 /* Firmware ready event received */
493 pr_info("Firmware ready event received\n");
494 wake_up(&cardp->fw_wq);
495 } else {
496 lbtf_deb_usb("Waiting for confirmation; got %x %x\n",
497 le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
498 if_usb_submit_rx_urb_fwload(cardp);
499 }
500 kfree_skb(skb);
501 lbtf_deb_leave(LBTF_DEB_USB);
502 return;
503 }
504 if (cardp->bootcmdresp <= 0) {
505 memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
506
507 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
508 kfree_skb(skb);
509 if_usb_submit_rx_urb_fwload(cardp);
510 cardp->bootcmdresp = 1;
511 /* Received valid boot command response */
512 lbtf_deb_usbd(&cardp->udev->dev,
513 "Received valid boot command response\n");
514 lbtf_deb_leave(LBTF_DEB_USB);
515 return;
516 }
517 if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
518 if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
519 bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
520 bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
521 if (!cardp->bootcmdresp)
522 pr_info("Firmware already seems alive; resetting\n");
523 cardp->bootcmdresp = -1;
524 } else {
525 pr_info("boot cmd response wrong magic number (0x%x)\n",
526 le32_to_cpu(bcmdresp.magic));
527 }
528 } else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
529 pr_info("boot cmd response cmd_tag error (%d)\n",
530 bcmdresp.cmd);
531 } else if (bcmdresp.result != BOOT_CMD_RESP_OK) {
532 pr_info("boot cmd response result error (%d)\n",
533 bcmdresp.result);
534 } else {
535 cardp->bootcmdresp = 1;
536 lbtf_deb_usbd(&cardp->udev->dev,
537 "Received valid boot command response\n");
538 }
539
540 kfree_skb(skb);
541 if_usb_submit_rx_urb_fwload(cardp);
542 lbtf_deb_leave(LBTF_DEB_USB);
543 return;
544 }
545
546 syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader),
547 GFP_ATOMIC);
548 if (!syncfwheader) {
549 lbtf_deb_usbd(&cardp->udev->dev,
550 "Failure to allocate syncfwheader\n");
551 kfree_skb(skb);
552 lbtf_deb_leave(LBTF_DEB_USB);
553 return;
554 }
555
556 if (!syncfwheader->cmd) {
557 lbtf_deb_usb2(&cardp->udev->dev,
558 "FW received Blk with correct CRC\n");
559 lbtf_deb_usb2(&cardp->udev->dev,
560 "FW received Blk seqnum = %d\n",
561 le32_to_cpu(syncfwheader->seqnum));
562 cardp->CRC_OK = 1;
563 } else {
564 lbtf_deb_usbd(&cardp->udev->dev,
565 "FW received Blk with CRC error\n");
566 cardp->CRC_OK = 0;
567 }
568
569 kfree_skb(skb);
570
571 /* reschedule timer for 200ms hence */
572 mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
573
574 if (cardp->fwfinalblk) {
575 cardp->fwdnldover = 1;
576 goto exit;
577 }
578
579 if_usb_send_fw_pkt(cardp);
580
581 exit:
582 if_usb_submit_rx_urb_fwload(cardp);
583
584 kfree(syncfwheader);
585
586 lbtf_deb_leave(LBTF_DEB_USB);
587 }
588
589 #define MRVDRV_MIN_PKT_LEN 30
590
591 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
592 struct if_usb_card *cardp,
593 struct lbtf_private *priv)
594 {
595 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
596 || recvlength < MRVDRV_MIN_PKT_LEN) {
597 lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
598 kfree_skb(skb);
599 return;
600 }
601
602 skb_put(skb, recvlength);
603 skb_pull(skb, MESSAGE_HEADER_LEN);
604 lbtf_rx(priv, skb);
605 }
606
607 static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
608 struct sk_buff *skb,
609 struct if_usb_card *cardp,
610 struct lbtf_private *priv)
611 {
612 if (recvlength > LBS_CMD_BUFFER_SIZE) {
613 lbtf_deb_usbd(&cardp->udev->dev,
614 "The receive buffer is too large\n");
615 kfree_skb(skb);
616 return;
617 }
618
619 BUG_ON(!in_interrupt());
620
621 spin_lock(&priv->driver_lock);
622 memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
623 recvlength - MESSAGE_HEADER_LEN);
624 kfree_skb(skb);
625 lbtf_cmd_response_rx(priv);
626 spin_unlock(&priv->driver_lock);
627 }
628
629 /**
630 * if_usb_receive - read data received from the device.
631 *
632 * @urb pointer to struct urb
633 */
634 static void if_usb_receive(struct urb *urb)
635 {
636 struct if_usb_card *cardp = urb->context;
637 struct sk_buff *skb = cardp->rx_skb;
638 struct lbtf_private *priv = cardp->priv;
639 int recvlength = urb->actual_length;
640 uint8_t *recvbuff = NULL;
641 uint32_t recvtype = 0;
642 __le32 *pkt = (__le32 *) skb->data;
643
644 lbtf_deb_enter(LBTF_DEB_USB);
645
646 if (recvlength) {
647 if (urb->status) {
648 lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
649 urb->status);
650 kfree_skb(skb);
651 goto setup_for_next;
652 }
653
654 recvbuff = skb->data;
655 recvtype = le32_to_cpu(pkt[0]);
656 lbtf_deb_usbd(&cardp->udev->dev,
657 "Recv length = 0x%x, Recv type = 0x%X\n",
658 recvlength, recvtype);
659 } else if (urb->status) {
660 kfree_skb(skb);
661 lbtf_deb_leave(LBTF_DEB_USB);
662 return;
663 }
664
665 switch (recvtype) {
666 case CMD_TYPE_DATA:
667 process_cmdtypedata(recvlength, skb, cardp, priv);
668 break;
669
670 case CMD_TYPE_REQUEST:
671 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
672 break;
673
674 case CMD_TYPE_INDICATION:
675 {
676 /* Event cause handling */
677 u32 event_cause = le32_to_cpu(pkt[1]);
678 lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n",
679 event_cause);
680
681 /* Icky undocumented magic special case */
682 if (event_cause & 0xffff0000) {
683 u16 tmp;
684 u8 retrycnt;
685 u8 failure;
686
687 tmp = event_cause >> 16;
688 retrycnt = tmp & 0x00ff;
689 failure = (tmp & 0xff00) >> 8;
690 lbtf_send_tx_feedback(priv, retrycnt, failure);
691 } else if (event_cause == LBTF_EVENT_BCN_SENT)
692 lbtf_bcn_sent(priv);
693 else
694 lbtf_deb_usbd(&cardp->udev->dev,
695 "Unsupported notification %d received\n",
696 event_cause);
697 kfree_skb(skb);
698 break;
699 }
700 default:
701 lbtf_deb_usbd(&cardp->udev->dev,
702 "libertastf: unknown command type 0x%X\n", recvtype);
703 kfree_skb(skb);
704 break;
705 }
706
707 setup_for_next:
708 if_usb_submit_rx_urb(cardp);
709 lbtf_deb_leave(LBTF_DEB_USB);
710 }
711
712 /**
713 * if_usb_host_to_card - Download data to the device
714 *
715 * @priv pointer to struct lbtf_private structure
716 * @type type of data
717 * @buf pointer to data buffer
718 * @len number of bytes
719 *
720 * Returns: 0 on success, nonzero otherwise
721 */
722 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
723 uint8_t *payload, uint16_t nb)
724 {
725 struct if_usb_card *cardp = priv->card;
726 u8 data = 0;
727
728 lbtf_deb_usbd(&cardp->udev->dev, "*** type = %u\n", type);
729 lbtf_deb_usbd(&cardp->udev->dev, "size after = %d\n", nb);
730
731 if (type == MVMS_CMD) {
732 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
733 } else {
734 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
735 data = 1;
736 }
737
738 memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
739
740 return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
741 data);
742 }
743
744 /**
745 * if_usb_issue_boot_command - Issue boot command to Boot2.
746 *
747 * @ivalue 1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
748 *
749 * Returns: 0
750 */
751 static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
752 {
753 struct bootcmd *bootcmd = cardp->ep_out_buf;
754
755 /* Prepare command */
756 bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
757 bootcmd->cmd = ivalue;
758 memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
759
760 /* Issue command */
761 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
762
763 return 0;
764 }
765
766
767 /**
768 * check_fwfile_format - Check the validity of Boot2/FW image.
769 *
770 * @data pointer to image
771 * @totlen image length
772 *
773 * Returns: 0 if the image is valid, nonzero otherwise.
774 */
775 static int check_fwfile_format(const u8 *data, u32 totlen)
776 {
777 u32 bincmd, exit;
778 u32 blksize, offset, len;
779 int ret;
780
781 ret = 1;
782 exit = len = 0;
783
784 do {
785 struct fwheader *fwh = (void *) data;
786
787 bincmd = le32_to_cpu(fwh->dnldcmd);
788 blksize = le32_to_cpu(fwh->datalength);
789 switch (bincmd) {
790 case FW_HAS_DATA_TO_RECV:
791 offset = sizeof(struct fwheader) + blksize;
792 data += offset;
793 len += offset;
794 if (len >= totlen)
795 exit = 1;
796 break;
797 case FW_HAS_LAST_BLOCK:
798 exit = 1;
799 ret = 0;
800 break;
801 default:
802 exit = 1;
803 break;
804 }
805 } while (!exit);
806
807 if (ret)
808 pr_err("firmware file format check FAIL\n");
809 else
810 lbtf_deb_fw("firmware file format check PASS\n");
811
812 return ret;
813 }
814
815
816 static int if_usb_prog_firmware(struct if_usb_card *cardp)
817 {
818 int i = 0;
819 static int reset_count = 10;
820 int ret = 0;
821
822 lbtf_deb_enter(LBTF_DEB_USB);
823
824 kernel_param_lock(THIS_MODULE);
825 ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
826 if (ret < 0) {
827 pr_err("request_firmware() failed with %#x\n", ret);
828 pr_err("firmware %s not found\n", lbtf_fw_name);
829 kernel_param_unlock(THIS_MODULE);
830 goto done;
831 }
832 kernel_param_unlock(THIS_MODULE);
833
834 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
835 goto release_fw;
836
837 restart:
838 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
839 lbtf_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
840 ret = -1;
841 goto release_fw;
842 }
843
844 cardp->bootcmdresp = 0;
845 do {
846 int j = 0;
847 i++;
848 /* Issue Boot command = 1, Boot from Download-FW */
849 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
850 /* wait for command response */
851 do {
852 j++;
853 msleep_interruptible(100);
854 } while (cardp->bootcmdresp == 0 && j < 10);
855 } while (cardp->bootcmdresp == 0 && i < 5);
856
857 if (cardp->bootcmdresp <= 0) {
858 if (--reset_count >= 0) {
859 if_usb_reset_device(cardp);
860 goto restart;
861 }
862 return -1;
863 }
864
865 i = 0;
866
867 cardp->totalbytes = 0;
868 cardp->fwlastblksent = 0;
869 cardp->CRC_OK = 1;
870 cardp->fwdnldover = 0;
871 cardp->fwseqnum = -1;
872 cardp->totalbytes = 0;
873 cardp->fwfinalblk = 0;
874
875 /* Send the first firmware packet... */
876 if_usb_send_fw_pkt(cardp);
877
878 /* ... and wait for the process to complete */
879 wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved ||
880 cardp->fwdnldover);
881
882 del_timer_sync(&cardp->fw_timeout);
883 usb_kill_urb(cardp->rx_urb);
884
885 if (!cardp->fwdnldover) {
886 pr_info("failed to load fw, resetting device!\n");
887 if (--reset_count >= 0) {
888 if_usb_reset_device(cardp);
889 goto restart;
890 }
891
892 pr_info("FW download failure, time = %d ms\n", i * 100);
893 ret = -1;
894 goto release_fw;
895 }
896
897 cardp->priv->fw_ready = 1;
898
899 release_fw:
900 release_firmware(cardp->fw);
901 cardp->fw = NULL;
902
903 if_usb_setup_firmware(cardp->priv);
904
905 done:
906 lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
907 return ret;
908 }
909
910
911 #define if_usb_suspend NULL
912 #define if_usb_resume NULL
913
914 static struct usb_driver if_usb_driver = {
915 .name = DRV_NAME,
916 .probe = if_usb_probe,
917 .disconnect = if_usb_disconnect,
918 .id_table = if_usb_table,
919 .suspend = if_usb_suspend,
920 .resume = if_usb_resume,
921 .disable_hub_initiated_lpm = 1,
922 };
923
924 module_usb_driver(if_usb_driver);
925
926 MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
927 MODULE_AUTHOR("Cozybit Inc.");
928 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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