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drm/vkms: Add support for ABGR8888 pixel format
[drm/drm-misc.git] / drivers / net / wireless / marvell / libertas_tf / if_usb.c
blob1750f5e93de210a96706eec840ef78f796213886
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2008, cozybit Inc.
4 * Copyright (C) 2003-2006, Marvell International Ltd.
5 */
6 #define DRV_NAME "lbtf_usb"
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include "libertas_tf.h"
11 #include "if_usb.h"
12
13 #include <linux/delay.h>
14 #include <linux/module.h>
15 #include <linux/firmware.h>
16 #include <linux/netdevice.h>
17 #include <linux/slab.h>
18 #include <linux/usb.h>
19
20 #define INSANEDEBUG 0
21 #define lbtf_deb_usb2(...) do { if (INSANEDEBUG) lbtf_deb_usbd(__VA_ARGS__); } while (0)
22
23 #define MESSAGE_HEADER_LEN 4
24
25 static char *lbtf_fw_name = "lbtf_usb.bin";
26 module_param_named(fw_name, lbtf_fw_name, charp, 0644);
27
28 MODULE_FIRMWARE("lbtf_usb.bin");
29
30 static const struct usb_device_id if_usb_table[] = {
31 /* Enter the device signature inside */
32 { USB_DEVICE(0x1286, 0x2001) },
33 { USB_DEVICE(0x05a3, 0x8388) },
34 {} /* Terminating entry */
35 };
36
37 MODULE_DEVICE_TABLE(usb, if_usb_table);
38
39 static void if_usb_receive(struct urb *urb);
40 static void if_usb_receive_fwload(struct urb *urb);
41 static int if_usb_prog_firmware(struct lbtf_private *priv);
42 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
43 uint8_t *payload, uint16_t nb);
44 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
45 uint16_t nb, u8 data);
46 static void if_usb_free(struct if_usb_card *cardp);
47 static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
48 static int if_usb_reset_device(struct lbtf_private *priv);
49
50 /**
51 * if_usb_write_bulk_callback - call back to handle URB status
52 *
53 * @urb: pointer to urb structure
54 */
55 static void if_usb_write_bulk_callback(struct urb *urb)
56 {
57 if (urb->status != 0) {
58 /* print the failure status number for debug */
59 pr_info("URB in failure status: %d\n", urb->status);
60 } else {
61 lbtf_deb_usb2(&urb->dev->dev, "URB status is successful\n");
62 lbtf_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
63 urb->actual_length);
64 }
65 }
66
67 /**
68 * if_usb_free - free tx/rx urb, skb and rx buffer
69 *
70 * @cardp: pointer if_usb_card
71 */
72 static void if_usb_free(struct if_usb_card *cardp)
73 {
74 lbtf_deb_enter(LBTF_DEB_USB);
75
76 /* Unlink tx & rx urb */
77 usb_kill_urb(cardp->tx_urb);
78 usb_kill_urb(cardp->rx_urb);
79 usb_kill_urb(cardp->cmd_urb);
80
81 usb_free_urb(cardp->tx_urb);
82 cardp->tx_urb = NULL;
83
84 usb_free_urb(cardp->rx_urb);
85 cardp->rx_urb = NULL;
86
87 usb_free_urb(cardp->cmd_urb);
88 cardp->cmd_urb = NULL;
89
90 kfree(cardp->ep_out_buf);
91 cardp->ep_out_buf = NULL;
92
93 lbtf_deb_leave(LBTF_DEB_USB);
94 }
95
96 static void if_usb_setup_firmware(struct lbtf_private *priv)
97 {
98 struct if_usb_card *cardp = priv->card;
99 struct cmd_ds_set_boot2_ver b2_cmd;
100
101 lbtf_deb_enter(LBTF_DEB_USB);
102
103 if_usb_submit_rx_urb(cardp);
104 b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
105 b2_cmd.action = 0;
106 b2_cmd.version = cardp->boot2_version;
107
108 if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
109 lbtf_deb_usb("Setting boot2 version failed\n");
110
111 lbtf_deb_leave(LBTF_DEB_USB);
112 }
113
114 static void if_usb_fw_timeo(struct timer_list *t)
115 {
116 struct if_usb_card *cardp = from_timer(cardp, t, fw_timeout);
117
118 lbtf_deb_enter(LBTF_DEB_USB);
119 if (!cardp->fwdnldover) {
120 /* Download timed out */
121 cardp->priv->surpriseremoved = 1;
122 pr_err("Download timed out\n");
123 } else {
124 lbtf_deb_usb("Download complete, no event. Assuming success\n");
125 }
126 wake_up(&cardp->fw_wq);
127 lbtf_deb_leave(LBTF_DEB_USB);
128 }
129
130 static const struct lbtf_ops if_usb_ops = {
131 .hw_host_to_card = if_usb_host_to_card,
132 .hw_prog_firmware = if_usb_prog_firmware,
133 .hw_reset_device = if_usb_reset_device,
134 };
135
136 /**
137 * if_usb_probe - sets the configuration values
138 *
139 * @intf: USB interface structure
140 * @id: pointer to usb_device_id
141 *
142 * Returns: 0 on success, error code on failure
143 */
144 static int if_usb_probe(struct usb_interface *intf,
145 const struct usb_device_id *id)
146 {
147 struct usb_device *udev;
148 struct usb_host_interface *iface_desc;
149 struct usb_endpoint_descriptor *endpoint;
150 struct lbtf_private *priv;
151 struct if_usb_card *cardp;
152 int i;
153
154 lbtf_deb_enter(LBTF_DEB_USB);
155 udev = interface_to_usbdev(intf);
156
157 cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
158 if (!cardp)
159 goto error;
160
161 timer_setup(&cardp->fw_timeout, if_usb_fw_timeo, 0);
162 init_waitqueue_head(&cardp->fw_wq);
163
164 cardp->udev = udev;
165 iface_desc = intf->cur_altsetting;
166
167 lbtf_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
168 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
169 le16_to_cpu(udev->descriptor.bcdUSB),
170 udev->descriptor.bDeviceClass,
171 udev->descriptor.bDeviceSubClass,
172 udev->descriptor.bDeviceProtocol);
173
174 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
175 endpoint = &iface_desc->endpoint[i].desc;
176 if (usb_endpoint_is_bulk_in(endpoint)) {
177 cardp->ep_in_size =
178 le16_to_cpu(endpoint->wMaxPacketSize);
179 cardp->ep_in = usb_endpoint_num(endpoint);
180
181 lbtf_deb_usbd(&udev->dev, "in_endpoint = %d\n",
182 cardp->ep_in);
183 lbtf_deb_usbd(&udev->dev, "Bulk in size is %d\n",
184 cardp->ep_in_size);
185 } else if (usb_endpoint_is_bulk_out(endpoint)) {
186 cardp->ep_out_size =
187 le16_to_cpu(endpoint->wMaxPacketSize);
188 cardp->ep_out = usb_endpoint_num(endpoint);
189
190 lbtf_deb_usbd(&udev->dev, "out_endpoint = %d\n",
191 cardp->ep_out);
192 lbtf_deb_usbd(&udev->dev, "Bulk out size is %d\n",
193 cardp->ep_out_size);
194 }
195 }
196 if (!cardp->ep_out_size || !cardp->ep_in_size) {
197 lbtf_deb_usbd(&udev->dev, "Endpoints not found\n");
198 /* Endpoints not found */
199 goto dealloc;
200 }
201
202 cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
203 if (!cardp->rx_urb)
204 goto dealloc;
205
206 cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
207 if (!cardp->tx_urb)
208 goto dealloc;
209
210 cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
211 if (!cardp->cmd_urb)
212 goto dealloc;
213
214 cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
215 GFP_KERNEL);
216 if (!cardp->ep_out_buf) {
217 lbtf_deb_usbd(&udev->dev, "Could not allocate buffer\n");
218 goto dealloc;
219 }
220
221 cardp->boot2_version = udev->descriptor.bcdDevice;
222 priv = lbtf_add_card(cardp, &udev->dev, &if_usb_ops);
223 if (!priv)
224 goto dealloc;
225
226 usb_get_dev(udev);
227 usb_set_intfdata(intf, cardp);
228
229 return 0;
230
231 dealloc:
232 if_usb_free(cardp);
233 kfree(cardp);
234 error:
235 lbtf_deb_leave(LBTF_DEB_MAIN);
236 return -ENOMEM;
237 }
238
239 /**
240 * if_usb_disconnect - free resource and cleanup
241 *
242 * @intf: USB interface structure
243 */
244 static void if_usb_disconnect(struct usb_interface *intf)
245 {
246 struct if_usb_card *cardp = usb_get_intfdata(intf);
247 struct lbtf_private *priv = cardp->priv;
248
249 lbtf_deb_enter(LBTF_DEB_MAIN);
250
251 if (priv) {
252 if_usb_reset_device(priv);
253 lbtf_remove_card(priv);
254 }
255
256 /* Unlink and free urb */
257 if_usb_free(cardp);
258 kfree(cardp);
259
260 usb_set_intfdata(intf, NULL);
261 usb_put_dev(interface_to_usbdev(intf));
262
263 lbtf_deb_leave(LBTF_DEB_MAIN);
264 }
265
266 /**
267 * if_usb_send_fw_pkt - This function downloads the FW
268 *
269 * @cardp: pointer if_usb_card
270 *
271 * Returns: 0
272 */
273 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
274 {
275 struct fwdata *fwdata = cardp->ep_out_buf;
276 u8 *firmware = (u8 *) cardp->fw->data;
277
278 lbtf_deb_enter(LBTF_DEB_FW);
279
280 /* If we got a CRC failure on the last block, back
281 up and retry it */
282 if (!cardp->CRC_OK) {
283 cardp->totalbytes = cardp->fwlastblksent;
284 cardp->fwseqnum--;
285 }
286
287 lbtf_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
288 cardp->totalbytes);
289
290 /* struct fwdata (which we sent to the card) has an
291 extra __le32 field in between the header and the data,
292 which is not in the struct fwheader in the actual
293 firmware binary. Insert the seqnum in the middle... */
294 memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
295 sizeof(struct fwheader));
296
297 cardp->fwlastblksent = cardp->totalbytes;
298 cardp->totalbytes += sizeof(struct fwheader);
299
300 memcpy(fwdata->data, &firmware[cardp->totalbytes],
301 le32_to_cpu(fwdata->hdr.datalength));
302
303 lbtf_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
304 le32_to_cpu(fwdata->hdr.datalength));
305
306 fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
307 cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
308
309 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
310 le32_to_cpu(fwdata->hdr.datalength), 0);
311
312 if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
313 lbtf_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
314 lbtf_deb_usb2(&cardp->udev->dev,
315 "seqnum = %d totalbytes = %d\n",
316 cardp->fwseqnum, cardp->totalbytes);
317 } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
318 lbtf_deb_usb2(&cardp->udev->dev,
319 "Host has finished FW downloading\n");
320 lbtf_deb_usb2(&cardp->udev->dev, "Downloading FW JUMP BLOCK\n");
321
322 /* Host has finished FW downloading
323 * Donwloading FW JUMP BLOCK
324 */
325 cardp->fwfinalblk = 1;
326 }
327
328 lbtf_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
329 cardp->totalbytes);
330
331 lbtf_deb_leave(LBTF_DEB_FW);
332 return 0;
333 }
334
335 static int if_usb_reset_device(struct lbtf_private *priv)
336 {
337 struct if_usb_card *cardp = priv->card;
338 struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
339 int ret;
340
341 lbtf_deb_enter(LBTF_DEB_USB);
342
343 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
344
345 cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
346 cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
347 cmd->hdr.result = cpu_to_le16(0);
348 cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
349 cmd->action = cpu_to_le16(CMD_ACT_HALT);
350 usb_tx_block(cardp, cardp->ep_out_buf,
351 4 + sizeof(struct cmd_ds_802_11_reset), 0);
352
353 msleep(100);
354 ret = usb_reset_device(cardp->udev);
355 msleep(100);
356
357 lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
358
359 return ret;
360 }
361
362 /**
363 * usb_tx_block - transfer data to the device
364 *
365 * @cardp: pointer if_usb_card
366 * @payload: pointer to payload data
367 * @nb: data length
368 * @data: non-zero for data, zero for commands
369 *
370 * Returns: 0 on success, nonzero otherwise.
371 */
372 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
373 uint16_t nb, u8 data)
374 {
375 int ret = -1;
376 struct urb *urb;
377
378 lbtf_deb_enter(LBTF_DEB_USB);
379 /* check if device is removed */
380 if (cardp->priv->surpriseremoved) {
381 lbtf_deb_usbd(&cardp->udev->dev, "Device removed\n");
382 goto tx_ret;
383 }
384
385 if (data)
386 urb = cardp->tx_urb;
387 else
388 urb = cardp->cmd_urb;
389
390 usb_fill_bulk_urb(urb, cardp->udev,
391 usb_sndbulkpipe(cardp->udev,
392 cardp->ep_out),
393 payload, nb, if_usb_write_bulk_callback, cardp);
394
395 urb->transfer_flags |= URB_ZERO_PACKET;
396
397 if (usb_submit_urb(urb, GFP_ATOMIC)) {
398 lbtf_deb_usbd(&cardp->udev->dev,
399 "usb_submit_urb failed: %d\n", ret);
400 goto tx_ret;
401 }
402
403 lbtf_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
404
405 ret = 0;
406
407 tx_ret:
408 lbtf_deb_leave(LBTF_DEB_USB);
409 return ret;
410 }
411
412 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
413 void (*callbackfn)(struct urb *urb))
414 {
415 struct sk_buff *skb;
416 int ret = -1;
417
418 lbtf_deb_enter(LBTF_DEB_USB);
419
420 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
421 if (!skb) {
422 pr_err("No free skb\n");
423 lbtf_deb_leave(LBTF_DEB_USB);
424 return -1;
425 }
426
427 cardp->rx_skb = skb;
428
429 /* Fill the receive configuration URB and initialise the Rx call back */
430 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
431 usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
432 skb_tail_pointer(skb),
433 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
434
435 lbtf_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n",
436 cardp->rx_urb);
437 ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC);
438 if (ret) {
439 lbtf_deb_usbd(&cardp->udev->dev,
440 "Submit Rx URB failed: %d\n", ret);
441 kfree_skb(skb);
442 cardp->rx_skb = NULL;
443 lbtf_deb_leave(LBTF_DEB_USB);
444 return -1;
445 } else {
446 lbtf_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
447 lbtf_deb_leave(LBTF_DEB_USB);
448 return 0;
449 }
450 }
451
452 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
453 {
454 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
455 }
456
457 static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
458 {
459 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
460 }
461
462 static void if_usb_receive_fwload(struct urb *urb)
463 {
464 struct if_usb_card *cardp = urb->context;
465 struct sk_buff *skb = cardp->rx_skb;
466 struct fwsyncheader *syncfwheader;
467 struct bootcmdresp bcmdresp;
468
469 lbtf_deb_enter(LBTF_DEB_USB);
470 if (urb->status) {
471 lbtf_deb_usbd(&cardp->udev->dev,
472 "URB status is failed during fw load\n");
473 kfree_skb(skb);
474 lbtf_deb_leave(LBTF_DEB_USB);
475 return;
476 }
477
478 if (cardp->fwdnldover) {
479 __le32 *tmp = (__le32 *)(skb->data);
480
481 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
482 tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
483 /* Firmware ready event received */
484 pr_info("Firmware ready event received\n");
485 wake_up(&cardp->fw_wq);
486 } else {
487 lbtf_deb_usb("Waiting for confirmation; got %x %x\n",
488 le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
489 if_usb_submit_rx_urb_fwload(cardp);
490 }
491 kfree_skb(skb);
492 lbtf_deb_leave(LBTF_DEB_USB);
493 return;
494 }
495 if (cardp->bootcmdresp <= 0) {
496 memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
497
498 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
499 kfree_skb(skb);
500 if_usb_submit_rx_urb_fwload(cardp);
501 cardp->bootcmdresp = 1;
502 /* Received valid boot command response */
503 lbtf_deb_usbd(&cardp->udev->dev,
504 "Received valid boot command response\n");
505 lbtf_deb_leave(LBTF_DEB_USB);
506 return;
507 }
508 if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
509 if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
510 bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
511 bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
512 if (!cardp->bootcmdresp)
513 pr_info("Firmware already seems alive; resetting\n");
514 cardp->bootcmdresp = -1;
515 } else {
516 pr_info("boot cmd response wrong magic number (0x%x)\n",
517 le32_to_cpu(bcmdresp.magic));
518 }
519 } else if (bcmdresp.cmd != BOOT_CMD_FW_BY_USB) {
520 pr_info("boot cmd response cmd_tag error (%d)\n",
521 bcmdresp.cmd);
522 } else if (bcmdresp.result != BOOT_CMD_RESP_OK) {
523 pr_info("boot cmd response result error (%d)\n",
524 bcmdresp.result);
525 } else {
526 cardp->bootcmdresp = 1;
527 lbtf_deb_usbd(&cardp->udev->dev,
528 "Received valid boot command response\n");
529 }
530
531 kfree_skb(skb);
532 if_usb_submit_rx_urb_fwload(cardp);
533 lbtf_deb_leave(LBTF_DEB_USB);
534 return;
535 }
536
537 syncfwheader = kmemdup(skb->data, sizeof(struct fwsyncheader),
538 GFP_ATOMIC);
539 if (!syncfwheader) {
540 lbtf_deb_usbd(&cardp->udev->dev,
541 "Failure to allocate syncfwheader\n");
542 kfree_skb(skb);
543 lbtf_deb_leave(LBTF_DEB_USB);
544 return;
545 }
546
547 if (!syncfwheader->cmd) {
548 lbtf_deb_usb2(&cardp->udev->dev,
549 "FW received Blk with correct CRC\n");
550 lbtf_deb_usb2(&cardp->udev->dev,
551 "FW received Blk seqnum = %d\n",
552 le32_to_cpu(syncfwheader->seqnum));
553 cardp->CRC_OK = 1;
554 } else {
555 lbtf_deb_usbd(&cardp->udev->dev,
556 "FW received Blk with CRC error\n");
557 cardp->CRC_OK = 0;
558 }
559
560 kfree_skb(skb);
561
562 /* reschedule timer for 200ms hence */
563 mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
564
565 if (cardp->fwfinalblk) {
566 cardp->fwdnldover = 1;
567 goto exit;
568 }
569
570 if_usb_send_fw_pkt(cardp);
571
572 exit:
573 if_usb_submit_rx_urb_fwload(cardp);
574
575 kfree(syncfwheader);
576
577 lbtf_deb_leave(LBTF_DEB_USB);
578 }
579
580 #define MRVDRV_MIN_PKT_LEN 30
581
582 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
583 struct if_usb_card *cardp,
584 struct lbtf_private *priv)
585 {
586 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
587 || recvlength < MRVDRV_MIN_PKT_LEN) {
588 lbtf_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
589 kfree_skb(skb);
590 return;
591 }
592
593 skb_put(skb, recvlength);
594 skb_pull(skb, MESSAGE_HEADER_LEN);
595 lbtf_rx(priv, skb);
596 }
597
598 static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
599 struct sk_buff *skb,
600 struct if_usb_card *cardp,
601 struct lbtf_private *priv)
602 {
603 unsigned long flags;
604
605 if (recvlength < MESSAGE_HEADER_LEN ||
606 recvlength > LBS_CMD_BUFFER_SIZE) {
607 lbtf_deb_usbd(&cardp->udev->dev,
608 "The receive buffer is invalid: %d\n", recvlength);
609 kfree_skb(skb);
610 return;
611 }
612
613 spin_lock_irqsave(&priv->driver_lock, flags);
614 memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
615 recvlength - MESSAGE_HEADER_LEN);
616 dev_kfree_skb_irq(skb);
617 lbtf_cmd_response_rx(priv);
618 spin_unlock_irqrestore(&priv->driver_lock, flags);
619 }
620
621 /**
622 * if_usb_receive - read data received from the device.
623 *
624 * @urb: pointer to struct urb
625 */
626 static void if_usb_receive(struct urb *urb)
627 {
628 struct if_usb_card *cardp = urb->context;
629 struct sk_buff *skb = cardp->rx_skb;
630 struct lbtf_private *priv = cardp->priv;
631 int recvlength = urb->actual_length;
632 uint8_t *recvbuff = NULL;
633 uint32_t recvtype = 0;
634 __le32 *pkt = (__le32 *) skb->data;
635
636 lbtf_deb_enter(LBTF_DEB_USB);
637
638 if (recvlength) {
639 if (urb->status) {
640 lbtf_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
641 urb->status);
642 kfree_skb(skb);
643 goto setup_for_next;
644 }
645
646 recvbuff = skb->data;
647 recvtype = le32_to_cpu(pkt[0]);
648 lbtf_deb_usbd(&cardp->udev->dev,
649 "Recv length = 0x%x, Recv type = 0x%X\n",
650 recvlength, recvtype);
651 } else if (urb->status) {
652 kfree_skb(skb);
653 lbtf_deb_leave(LBTF_DEB_USB);
654 return;
655 }
656
657 switch (recvtype) {
658 case CMD_TYPE_DATA:
659 process_cmdtypedata(recvlength, skb, cardp, priv);
660 break;
661
662 case CMD_TYPE_REQUEST:
663 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
664 break;
665
666 case CMD_TYPE_INDICATION:
667 {
668 /* Event cause handling */
669 u32 event_cause = le32_to_cpu(pkt[1]);
670 lbtf_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n",
671 event_cause);
672
673 /* Icky undocumented magic special case */
674 if (event_cause & 0xffff0000) {
675 u16 tmp;
676 u8 retrycnt;
677 u8 failure;
678
679 tmp = event_cause >> 16;
680 retrycnt = tmp & 0x00ff;
681 failure = (tmp & 0xff00) >> 8;
682 lbtf_send_tx_feedback(priv, retrycnt, failure);
683 } else if (event_cause == LBTF_EVENT_BCN_SENT)
684 lbtf_bcn_sent(priv);
685 else
686 lbtf_deb_usbd(&cardp->udev->dev,
687 "Unsupported notification %d received\n",
688 event_cause);
689 kfree_skb(skb);
690 break;
691 }
692 default:
693 lbtf_deb_usbd(&cardp->udev->dev,
694 "libertastf: unknown command type 0x%X\n", recvtype);
695 kfree_skb(skb);
696 break;
697 }
698
699 setup_for_next:
700 if_usb_submit_rx_urb(cardp);
701 lbtf_deb_leave(LBTF_DEB_USB);
702 }
703
704 /**
705 * if_usb_host_to_card - Download data to the device
706 *
707 * @priv: pointer to struct lbtf_private structure
708 * @type: type of data
709 * @payload: pointer to payload buffer
710 * @nb: number of bytes
711 *
712 * Returns: 0 on success, nonzero otherwise
713 */
714 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
715 uint8_t *payload, uint16_t nb)
716 {
717 struct if_usb_card *cardp = priv->card;
718 u8 data = 0;
719
720 lbtf_deb_usbd(&cardp->udev->dev, "*** type = %u\n", type);
721 lbtf_deb_usbd(&cardp->udev->dev, "size after = %d\n", nb);
722
723 if (type == MVMS_CMD) {
724 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
725 } else {
726 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
727 data = 1;
728 }
729
730 memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
731
732 return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
733 data);
734 }
735
736 /**
737 * if_usb_issue_boot_command - Issue boot command to Boot2.
738 *
739 * @cardp: pointer if_usb_card
740 * @ivalue: 1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
741 *
742 * Returns: 0
743 */
744 static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
745 {
746 struct bootcmd *bootcmd = cardp->ep_out_buf;
747
748 /* Prepare command */
749 bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
750 bootcmd->cmd = ivalue;
751 memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
752
753 /* Issue command */
754 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
755
756 return 0;
757 }
758
759
760 /**
761 * check_fwfile_format - Check the validity of Boot2/FW image.
762 *
763 * @data: pointer to image
764 * @totlen: image length
765 *
766 * Returns: 0 if the image is valid, nonzero otherwise.
767 */
768 static int check_fwfile_format(const u8 *data, u32 totlen)
769 {
770 u32 bincmd, exit;
771 u32 blksize, offset, len;
772 int ret;
773
774 ret = 1;
775 exit = len = 0;
776
777 do {
778 struct fwheader *fwh = (void *) data;
779
780 bincmd = le32_to_cpu(fwh->dnldcmd);
781 blksize = le32_to_cpu(fwh->datalength);
782 switch (bincmd) {
783 case FW_HAS_DATA_TO_RECV:
784 offset = sizeof(struct fwheader) + blksize;
785 data += offset;
786 len += offset;
787 if (len >= totlen)
788 exit = 1;
789 break;
790 case FW_HAS_LAST_BLOCK:
791 exit = 1;
792 ret = 0;
793 break;
794 default:
795 exit = 1;
796 break;
797 }
798 } while (!exit);
799
800 if (ret)
801 pr_err("firmware file format check FAIL\n");
802 else
803 lbtf_deb_fw("firmware file format check PASS\n");
804
805 return ret;
806 }
807
808
809 static int if_usb_prog_firmware(struct lbtf_private *priv)
810 {
811 struct if_usb_card *cardp = priv->card;
812 int i = 0;
813 static int reset_count = 10;
814 int ret = 0;
815
816 lbtf_deb_enter(LBTF_DEB_USB);
817
818 cardp->priv = priv;
819
820 kernel_param_lock(THIS_MODULE);
821 ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
822 if (ret < 0) {
823 pr_err("request_firmware() failed with %#x\n", ret);
824 pr_err("firmware %s not found\n", lbtf_fw_name);
825 kernel_param_unlock(THIS_MODULE);
826 goto done;
827 }
828 kernel_param_unlock(THIS_MODULE);
829
830 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
831 goto release_fw;
832
833 restart:
834 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
835 lbtf_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
836 ret = -1;
837 goto release_fw;
838 }
839
840 cardp->bootcmdresp = 0;
841 do {
842 int j = 0;
843 i++;
844 /* Issue Boot command = 1, Boot from Download-FW */
845 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
846 /* wait for command response */
847 do {
848 j++;
849 msleep_interruptible(100);
850 } while (cardp->bootcmdresp == 0 && j < 10);
851 } while (cardp->bootcmdresp == 0 && i < 5);
852
853 if (cardp->bootcmdresp <= 0) {
854 if (--reset_count >= 0) {
855 if_usb_reset_device(priv);
856 goto restart;
857 }
858 return -1;
859 }
860
861 i = 0;
862
863 cardp->totalbytes = 0;
864 cardp->fwlastblksent = 0;
865 cardp->CRC_OK = 1;
866 cardp->fwdnldover = 0;
867 cardp->fwseqnum = -1;
868 cardp->totalbytes = 0;
869 cardp->fwfinalblk = 0;
870
871 /* Send the first firmware packet... */
872 if_usb_send_fw_pkt(cardp);
873
874 /* ... and wait for the process to complete */
875 wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved ||
876 cardp->fwdnldover);
877
878 del_timer_sync(&cardp->fw_timeout);
879 usb_kill_urb(cardp->rx_urb);
880
881 if (!cardp->fwdnldover) {
882 pr_info("failed to load fw, resetting device!\n");
883 if (--reset_count >= 0) {
884 if_usb_reset_device(priv);
885 goto restart;
886 }
887
888 pr_info("FW download failure, time = %d ms\n", i * 100);
889 ret = -1;
890 goto release_fw;
891 }
892
893 release_fw:
894 release_firmware(cardp->fw);
895 cardp->fw = NULL;
896
897 if_usb_setup_firmware(cardp->priv);
898
899 done:
900 lbtf_deb_leave_args(LBTF_DEB_USB, "ret %d", ret);
901 return ret;
902 }
903
904
905 #define if_usb_suspend NULL
906 #define if_usb_resume NULL
907
908 static struct usb_driver if_usb_driver = {
909 .name = DRV_NAME,
910 .probe = if_usb_probe,
911 .disconnect = if_usb_disconnect,
912 .id_table = if_usb_table,
913 .suspend = if_usb_suspend,
914 .resume = if_usb_resume,
915 .disable_hub_initiated_lpm = 1,
916 };
917
918 module_usb_driver(if_usb_driver);
919
920 MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
921 MODULE_AUTHOR("Cozybit Inc.");
922 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes