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02192e8a15ea1a9a2a04663565a885d4fbb9efea
[openwrt.git] / package / libertas / src / if_usb.c
1 /**
2 * This file contains functions used in USB interface module.
3 */
4 #include <linux/delay.h>
5 #include <linux/moduleparam.h>
6 #include <linux/firmware.h>
7 #include <linux/netdevice.h>
8 #include <linux/usb.h>
9
10 #define DRV_NAME "usb8xxx"
11
12 #include "host.h"
13 #include "decl.h"
14 #include "defs.h"
15 #include "dev.h"
16 #include "cmd.h"
17 #include "if_usb.h"
18
19 #define MESSAGE_HEADER_LEN 4
20
21 static char *lbs_fw_name = "usb8388.bin";
22 module_param_named(fw_name, lbs_fw_name, charp, 0644);
23
24 static struct usb_device_id if_usb_table[] = {
25 /* Enter the device signature inside */
26 { USB_DEVICE(0x1286, 0x2001) },
27 { USB_DEVICE(0x05a3, 0x8388) },
28 {} /* Terminating entry */
29 };
30
31 MODULE_DEVICE_TABLE(usb, if_usb_table);
32
33 static void if_usb_receive(struct urb *urb);
34 static void if_usb_receive_fwload(struct urb *urb);
35 static int if_usb_prog_firmware(struct usb_card_rec *cardp);
36 static int if_usb_host_to_card(struct lbs_private *priv,
37 u8 type,
38 u8 *payload,
39 u16 nb);
40 static int if_usb_get_int_status(struct lbs_private *priv, u8 *);
41 static int if_usb_read_event_cause(struct lbs_private *);
42 static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb);
43 static void if_usb_free(struct usb_card_rec *cardp);
44 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp);
45 static int if_usb_reset_device(struct usb_card_rec *cardp);
46
47 /**
48 * @brief call back function to handle the status of the URB
49 * @param urb pointer to urb structure
50 * @return N/A
51 */
52 static void if_usb_write_bulk_callback(struct urb *urb)
53 {
54 struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context;
55
56 /* handle the transmission complete validations */
57
58 if (urb->status == 0) {
59 struct lbs_private *priv = cardp->priv;
60
61 /*
62 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
63 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
64 urb->actual_length);
65 */
66
67 /* Used for both firmware TX and regular TX. priv isn't
68 * valid at firmware load time.
69 */
70 if (priv)
71 lbs_host_to_card_done(priv);
72 } else {
73 /* print the failure status number for debug */
74 lbs_pr_info("URB in failure status: %d\n", urb->status);
75 }
76
77 return;
78 }
79
80 /**
81 * @brief free tx/rx urb, skb and rx buffer
82 * @param cardp pointer usb_card_rec
83 * @return N/A
84 */
85 static void if_usb_free(struct usb_card_rec *cardp)
86 {
87 lbs_deb_enter(LBS_DEB_USB);
88
89 /* Unlink tx & rx urb */
90 usb_kill_urb(cardp->tx_urb);
91 usb_kill_urb(cardp->rx_urb);
92
93 usb_free_urb(cardp->tx_urb);
94 cardp->tx_urb = NULL;
95
96 usb_free_urb(cardp->rx_urb);
97 cardp->rx_urb = NULL;
98
99 kfree(cardp->bulk_out_buffer);
100 cardp->bulk_out_buffer = NULL;
101
102 lbs_deb_leave(LBS_DEB_USB);
103 }
104
105 static void if_usb_set_boot2_ver(struct lbs_private *priv)
106 {
107 struct cmd_ds_set_boot2_ver b2_cmd;
108
109 b2_cmd.action = 0;
110 b2_cmd.version = priv->boot2_version;
111
112 if (lbs_cmd(priv, CMD_SET_BOOT2_VER, b2_cmd, NULL, 0))
113 lbs_deb_usb("Setting boot2 version failed\n");
114 }
115
116 static void if_usb_fw_timeo(unsigned long priv)
117 {
118 struct usb_card_rec *cardp = (void *)priv;
119
120 if (cardp->fwdnldover) {
121 lbs_deb_usb("Download complete, no event. Assuming success\n");
122 } else {
123 lbs_pr_err("Download timed out\n");
124 cardp->surprise_removed = 1;
125 }
126 wake_up(&cardp->fw_wq);
127 }
128 /**
129 * @brief sets the configuration values
130 * @param ifnum interface number
131 * @param id pointer to usb_device_id
132 * @return 0 on success, error code on failure
133 */
134 static int if_usb_probe(struct usb_interface *intf,
135 const struct usb_device_id *id)
136 {
137 struct usb_device *udev;
138 struct usb_host_interface *iface_desc;
139 struct usb_endpoint_descriptor *endpoint;
140 struct lbs_private *priv;
141 struct usb_card_rec *cardp;
142 int i;
143
144 udev = interface_to_usbdev(intf);
145
146 cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
147 if (!cardp) {
148 lbs_pr_err("Out of memory allocating private data.\n");
149 goto error;
150 }
151
152 setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
153 init_waitqueue_head(&cardp->fw_wq);
154
155 cardp->udev = udev;
156 iface_desc = intf->cur_altsetting;
157
158 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
159 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
160 le16_to_cpu(udev->descriptor.bcdUSB),
161 udev->descriptor.bDeviceClass,
162 udev->descriptor.bDeviceSubClass,
163 udev->descriptor.bDeviceProtocol);
164
165 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
166 endpoint = &iface_desc->endpoint[i].desc;
167 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
168 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
169 USB_ENDPOINT_XFER_BULK)) {
170 /* we found a bulk in endpoint */
171 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
172 le16_to_cpu(endpoint->wMaxPacketSize));
173 if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
174 lbs_deb_usbd(&udev->dev,
175 "Rx URB allocation failed\n");
176 goto dealloc;
177 }
178 cardp->bulk_in_size =
179 le16_to_cpu(endpoint->wMaxPacketSize);
180 cardp->bulk_in_endpointAddr =
181 (endpoint->
182 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
183 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
184 endpoint->bEndpointAddress);
185 }
186
187 if (((endpoint->
188 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
189 USB_DIR_OUT)
190 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
191 USB_ENDPOINT_XFER_BULK)) {
192 /* We found bulk out endpoint */
193 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
194 lbs_deb_usbd(&udev->dev,
195 "Tx URB allocation failed\n");
196 goto dealloc;
197 }
198
199 cardp->bulk_out_size =
200 le16_to_cpu(endpoint->wMaxPacketSize);
201 lbs_deb_usbd(&udev->dev,
202 "Bulk out size is %d\n",
203 le16_to_cpu(endpoint->wMaxPacketSize));
204 cardp->bulk_out_endpointAddr =
205 endpoint->bEndpointAddress;
206 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
207 endpoint->bEndpointAddress);
208 cardp->bulk_out_buffer =
209 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
210 GFP_KERNEL);
211
212 if (!cardp->bulk_out_buffer) {
213 lbs_deb_usbd(&udev->dev,
214 "Could not allocate buffer\n");
215 goto dealloc;
216 }
217 }
218 }
219
220 /* Upload firmware */
221 cardp->rinfo.cardp = cardp;
222 if (if_usb_prog_firmware(cardp)) {
223 lbs_deb_usbd(&udev->dev, "FW upload failed");
224 goto err_prog_firmware;
225 }
226
227 if (!(priv = lbs_add_card(cardp, &udev->dev)))
228 goto err_prog_firmware;
229
230 cardp->priv = priv;
231 cardp->priv->fw_ready = 1;
232
233 priv->hw_host_to_card = if_usb_host_to_card;
234 priv->hw_get_int_status = if_usb_get_int_status;
235 priv->hw_read_event_cause = if_usb_read_event_cause;
236 priv->boot2_version = udev->descriptor.bcdDevice;
237
238 if_usb_submit_rx_urb(cardp);
239
240 if (lbs_start_card(priv))
241 goto err_start_card;
242
243 if_usb_set_boot2_ver(priv);
244
245 usb_get_dev(udev);
246 usb_set_intfdata(intf, cardp);
247
248 return 0;
249
250 err_start_card:
251 lbs_remove_card(priv);
252 err_prog_firmware:
253 if_usb_reset_device(cardp);
254 dealloc:
255 if_usb_free(cardp);
256
257 error:
258 return -ENOMEM;
259 }
260
261 /**
262 * @brief free resource and cleanup
263 * @param intf USB interface structure
264 * @return N/A
265 */
266 static void if_usb_disconnect(struct usb_interface *intf)
267 {
268 struct usb_card_rec *cardp = usb_get_intfdata(intf);
269 struct lbs_private *priv = (struct lbs_private *) cardp->priv;
270
271 lbs_deb_enter(LBS_DEB_MAIN);
272
273 /* Update Surprise removed to TRUE */
274 cardp->surprise_removed = 1;
275
276 if (priv) {
277
278 priv->surpriseremoved = 1;
279 lbs_stop_card(priv);
280 lbs_remove_card(priv);
281 }
282
283 /* this is (apparently?) necessary for future usage of the device */
284 lbs_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT,
285 0, 0, NULL);
286
287 /* Unlink and free urb */
288 if_usb_free(cardp);
289
290 usb_set_intfdata(intf, NULL);
291 usb_put_dev(interface_to_usbdev(intf));
292
293 lbs_deb_leave(LBS_DEB_MAIN);
294 }
295
296 /**
297 * @brief This function download FW
298 * @param priv pointer to struct lbs_private
299 * @return 0
300 */
301 static int if_usb_send_fw_pkt(struct usb_card_rec *cardp)
302 {
303 struct FWData *fwdata;
304 struct fwheader *fwheader;
305 u8 *firmware = cardp->fw->data;
306
307 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
308
309 if (!fwdata)
310 return -1;
311
312 fwheader = &fwdata->fwheader;
313
314 if (!cardp->CRC_OK) {
315 cardp->totalbytes = cardp->fwlastblksent;
316 cardp->fwseqnum = cardp->lastseqnum - 1;
317 }
318
319 /*
320 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
321 cardp->totalbytes);
322 */
323
324 memcpy(fwheader, &firmware[cardp->totalbytes],
325 sizeof(struct fwheader));
326
327 cardp->fwlastblksent = cardp->totalbytes;
328 cardp->totalbytes += sizeof(struct fwheader);
329
330 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
331 memcpy(fwdata->data, &firmware[cardp->totalbytes],
332 le32_to_cpu(fwdata->fwheader.datalength));
333
334 /*
335 lbs_deb_usbd(&cardp->udev->dev,
336 "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
337 */
338
339 cardp->fwseqnum = cardp->fwseqnum + 1;
340
341 fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
342 cardp->lastseqnum = cardp->fwseqnum;
343 cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
344
345 if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
346 /*
347 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
348 lbs_deb_usbd(&cardp->udev->dev,
349 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
350 cardp->totalbytes);
351 */
352 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
353 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
354
355 } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
356 /*
357 lbs_deb_usbd(&cardp->udev->dev,
358 "Host has finished FW downloading\n");
359 lbs_deb_usbd(&cardp->udev->dev,
360 "Donwloading FW JUMP BLOCK\n");
361 */
362 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
363 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
364 cardp->fwfinalblk = 1;
365 }
366
367 /*
368 lbs_deb_usbd(&cardp->udev->dev,
369 "The firmware download is done size is %d\n",
370 cardp->totalbytes);
371 */
372
373 kfree(fwdata);
374
375 return 0;
376 }
377
378 static int if_usb_reset_device(struct usb_card_rec *cardp)
379 {
380 struct cmd_ds_command *cmd = (void *)&cardp->bulk_out_buffer[4];
381 int ret;
382
383 lbs_deb_enter(LBS_DEB_USB);
384
385 *(__le32 *)cardp->bulk_out_buffer = cpu_to_le32(CMD_TYPE_REQUEST);
386
387 cmd->command = cpu_to_le16(CMD_802_11_RESET);
388 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN);
389 cmd->result = cpu_to_le16(0);
390 cmd->seqnum = cpu_to_le16(0x5a5a);
391 cmd->params.reset.action = cpu_to_le16(CMD_ACT_HALT);
392 usb_tx_block(cardp, cardp->bulk_out_buffer, 4 + S_DS_GEN + sizeof(struct cmd_ds_802_11_reset));
393
394 msleep(100);
395 ret = usb_reset_device(cardp->udev);
396 msleep(100);
397
398 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
399
400 return ret;
401 }
402
403 /**
404 * @brief This function transfer the data to the device.
405 * @param priv pointer to struct lbs_private
406 * @param payload pointer to payload data
407 * @param nb data length
408 * @return 0 or -1
409 */
410 static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb)
411 {
412 int ret = -1;
413
414 /* check if device is removed */
415 if (cardp->surprise_removed) {
416 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
417 goto tx_ret;
418 }
419
420 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
421 usb_sndbulkpipe(cardp->udev,
422 cardp->bulk_out_endpointAddr),
423 payload, nb, if_usb_write_bulk_callback, cardp);
424
425 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
426
427 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
428 /* transfer failed */
429 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
430 ret = -1;
431 } else {
432 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
433 ret = 0;
434 }
435
436 tx_ret:
437 return ret;
438 }
439
440 static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp,
441 void (*callbackfn)(struct urb *urb))
442 {
443 struct sk_buff *skb;
444 struct read_cb_info *rinfo = &cardp->rinfo;
445 int ret = -1;
446
447 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
448 lbs_pr_err("No free skb\n");
449 goto rx_ret;
450 }
451
452 rinfo->skb = skb;
453
454 /* Fill the receive configuration URB and initialise the Rx call back */
455 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
456 usb_rcvbulkpipe(cardp->udev,
457 cardp->bulk_in_endpointAddr),
458 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
459 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
460 rinfo);
461
462 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
463
464 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
465 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
466 /* handle failure conditions */
467 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
468 kfree_skb(skb);
469 rinfo->skb = NULL;
470 ret = -1;
471 } else {
472 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
473 ret = 0;
474 }
475
476 rx_ret:
477 return ret;
478 }
479
480 static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp)
481 {
482 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
483 }
484
485 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
486 {
487 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
488 }
489
490 static void if_usb_receive_fwload(struct urb *urb)
491 {
492 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
493 struct sk_buff *skb = rinfo->skb;
494 struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
495 struct fwsyncheader *syncfwheader;
496 struct bootcmdrespStr bootcmdresp;
497
498 if (urb->status) {
499 lbs_deb_usbd(&cardp->udev->dev,
500 "URB status is failed during fw load\n");
501 kfree_skb(skb);
502 return;
503 }
504
505 if (cardp->fwdnldover) {
506 __le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
507
508 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
509 tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
510 lbs_pr_info("Firmware ready event received\n");
511 wake_up(&cardp->fw_wq);
512 } else {
513 lbs_deb_usb("Waiting for confirmation; got %x %x\n", le32_to_cpu(tmp[0]),
514 le32_to_cpu(tmp[1]));
515 if_usb_submit_rx_urb_fwload(cardp);
516 }
517 kfree_skb(skb);
518 return;
519 }
520 if (cardp->bootcmdresp <= 0) {
521 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
522 sizeof(bootcmdresp));
523 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
524 kfree_skb(skb);
525 if_usb_submit_rx_urb_fwload(cardp);
526 cardp->bootcmdresp = 1;
527 lbs_deb_usbd(&cardp->udev->dev,
528 "Received valid boot command response\n");
529 return;
530 }
531 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
532 if (bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_REQUEST) ||
533 bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_DATA) ||
534 bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_INDICATION)) {
535 if (!cardp->bootcmdresp)
536 lbs_pr_info("Firmware already seems alive; resetting\n");
537 cardp->bootcmdresp = -1;
538 } else {
539 lbs_pr_info("boot cmd response wrong magic number (0x%x)\n",
540 le32_to_cpu(bootcmdresp.u32magicnumber));
541 }
542 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
543 lbs_pr_info(
544 "boot cmd response cmd_tag error (%d)\n",
545 bootcmdresp.u8cmd_tag);
546 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
547 lbs_pr_info(
548 "boot cmd response result error (%d)\n",
549 bootcmdresp.u8result);
550 } else {
551 cardp->bootcmdresp = 1;
552 lbs_deb_usbd(&cardp->udev->dev,
553 "Received valid boot command response\n");
554 }
555 kfree_skb(skb);
556 if_usb_submit_rx_urb_fwload(cardp);
557 return;
558 }
559
560 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
561 if (!syncfwheader) {
562 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
563 kfree_skb(skb);
564 return;
565 }
566
567 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
568 sizeof(struct fwsyncheader));
569
570 if (!syncfwheader->cmd) {
571 /*
572 lbs_deb_usbd(&cardp->udev->dev,
573 "FW received Blk with correct CRC\n");
574 lbs_deb_usbd(&cardp->udev->dev,
575 "FW received Blk seqnum = %d\n",
576 syncfwheader->seqnum);
577 */
578 cardp->CRC_OK = 1;
579 } else {
580 lbs_deb_usbd(&cardp->udev->dev,
581 "FW received Blk with CRC error\n");
582 cardp->CRC_OK = 0;
583 }
584
585 kfree_skb(skb);
586
587 /* reschedule timer for 200ms hence */
588 mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
589
590 if (cardp->fwfinalblk) {
591 cardp->fwdnldover = 1;
592 goto exit;
593 }
594
595 if_usb_send_fw_pkt(cardp);
596
597 exit:
598 if_usb_submit_rx_urb_fwload(cardp);
599
600 kfree(syncfwheader);
601
602 return;
603 }
604
605 #define MRVDRV_MIN_PKT_LEN 30
606
607 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
608 struct usb_card_rec *cardp,
609 struct lbs_private *priv)
610 {
611 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
612 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
613 lbs_deb_usbd(&cardp->udev->dev,
614 "Packet length is Invalid\n");
615 kfree_skb(skb);
616 return;
617 }
618
619 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
620 skb_put(skb, recvlength);
621 skb_pull(skb, MESSAGE_HEADER_LEN);
622 lbs_process_rxed_packet(priv, skb);
623 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
624 }
625
626 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
627 struct sk_buff *skb,
628 struct usb_card_rec *cardp,
629 struct lbs_private *priv)
630 {
631 u8 *cmdbuf;
632 if (recvlength > LBS_CMD_BUFFER_SIZE) {
633 lbs_deb_usbd(&cardp->udev->dev,
634 "The receive buffer is too large\n");
635 kfree_skb(skb);
636 return;
637 }
638
639 if (!in_interrupt())
640 BUG();
641
642 spin_lock(&priv->driver_lock);
643 /* take care of cur_cmd = NULL case by reading the
644 * data to clear the interrupt */
645 if (!priv->cur_cmd) {
646 cmdbuf = priv->upld_buf;
647 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
648 } else
649 cmdbuf = (u8 *) priv->cur_cmd->cmdbuf;
650
651 cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
652 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
653 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
654 priv->upld_len);
655
656 kfree_skb(skb);
657 lbs_interrupt(priv);
658 spin_unlock(&priv->driver_lock);
659
660 lbs_deb_usbd(&cardp->udev->dev,
661 "Wake up main thread to handle cmd response\n");
662
663 return;
664 }
665
666 /**
667 * @brief This function reads of the packet into the upload buff,
668 * wake up the main thread and initialise the Rx callack.
669 *
670 * @param urb pointer to struct urb
671 * @return N/A
672 */
673 static void if_usb_receive(struct urb *urb)
674 {
675 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
676 struct sk_buff *skb = rinfo->skb;
677 struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
678 struct lbs_private *priv = cardp->priv;
679
680 int recvlength = urb->actual_length;
681 u8 *recvbuff = NULL;
682 u32 recvtype = 0;
683
684 lbs_deb_enter(LBS_DEB_USB);
685
686 if (recvlength) {
687 __le32 tmp;
688
689 if (urb->status) {
690 lbs_deb_usbd(&cardp->udev->dev,
691 "URB status is failed\n");
692 kfree_skb(skb);
693 goto setup_for_next;
694 }
695
696 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
697 memcpy(&tmp, recvbuff, sizeof(u32));
698 recvtype = le32_to_cpu(tmp);
699 lbs_deb_usbd(&cardp->udev->dev,
700 "Recv length = 0x%x, Recv type = 0x%X\n",
701 recvlength, recvtype);
702 } else if (urb->status) {
703 kfree_skb(skb);
704 goto rx_exit;
705 }
706
707 switch (recvtype) {
708 case CMD_TYPE_DATA:
709 process_cmdtypedata(recvlength, skb, cardp, priv);
710 break;
711
712 case CMD_TYPE_REQUEST:
713 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
714 break;
715
716 case CMD_TYPE_INDICATION:
717 /* Event cause handling */
718 spin_lock(&priv->driver_lock);
719 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
720 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
721 cardp->usb_event_cause);
722 if (cardp->usb_event_cause & 0xffff0000) {
723 lbs_send_tx_feedback(priv);
724 spin_unlock(&priv->driver_lock);
725 break;
726 }
727 cardp->usb_event_cause <<= 3;
728 cardp->usb_int_cause |= MRVDRV_CARDEVENT;
729 kfree_skb(skb);
730 lbs_interrupt(priv);
731 spin_unlock(&priv->driver_lock);
732 goto rx_exit;
733 default:
734 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
735 recvtype);
736 kfree_skb(skb);
737 break;
738 }
739
740 setup_for_next:
741 if_usb_submit_rx_urb(cardp);
742 rx_exit:
743 lbs_deb_leave(LBS_DEB_USB);
744 }
745
746 /**
747 * @brief This function downloads data to FW
748 * @param priv pointer to struct lbs_private structure
749 * @param type type of data
750 * @param buf pointer to data buffer
751 * @param len number of bytes
752 * @return 0 or -1
753 */
754 static int if_usb_host_to_card(struct lbs_private *priv,
755 u8 type,
756 u8 *payload,
757 u16 nb)
758 {
759 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
760
761 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
762 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
763
764 if (type == MVMS_CMD) {
765 __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
766 priv->dnld_sent = DNLD_CMD_SENT;
767 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
768 MESSAGE_HEADER_LEN);
769
770 } else {
771 __le32 tmp = cpu_to_le32(CMD_TYPE_DATA);
772 priv->dnld_sent = DNLD_DATA_SENT;
773 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
774 MESSAGE_HEADER_LEN);
775 }
776
777 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
778
779 return usb_tx_block(cardp, cardp->bulk_out_buffer,
780 nb + MESSAGE_HEADER_LEN);
781 }
782
783 /* called with priv->driver_lock held */
784 static int if_usb_get_int_status(struct lbs_private *priv, u8 *ireg)
785 {
786 struct usb_card_rec *cardp = priv->card;
787
788 *ireg = cardp->usb_int_cause;
789 cardp->usb_int_cause = 0;
790
791 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
792
793 return 0;
794 }
795
796 static int if_usb_read_event_cause(struct lbs_private *priv)
797 {
798 struct usb_card_rec *cardp = priv->card;
799
800 priv->eventcause = cardp->usb_event_cause;
801 /* Re-submit rx urb here to avoid event lost issue */
802 if_usb_submit_rx_urb(cardp);
803 return 0;
804 }
805
806 /**
807 * @brief This function issues Boot command to the Boot2 code
808 * @param ivalue 1:Boot from FW by USB-Download
809 * 2:Boot from FW in EEPROM
810 * @return 0
811 */
812 static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
813 {
814 struct bootcmdstr sbootcmd;
815 int i;
816
817 /* Prepare command */
818 sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
819 sbootcmd.u8cmd_tag = ivalue;
820 for (i=0; i<11; i++)
821 sbootcmd.au8dumy[i]=0x00;
822 memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
823
824 /* Issue command */
825 usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
826
827 return 0;
828 }
829
830
831 /**
832 * @brief This function checks the validity of Boot2/FW image.
833 *
834 * @param data pointer to image
835 * len image length
836 * @return 0 or -1
837 */
838 static int check_fwfile_format(u8 *data, u32 totlen)
839 {
840 u32 bincmd, exit;
841 u32 blksize, offset, len;
842 int ret;
843
844 ret = 1;
845 exit = len = 0;
846
847 do {
848 struct fwheader *fwh = (void *)data;
849
850 bincmd = le32_to_cpu(fwh->dnldcmd);
851 blksize = le32_to_cpu(fwh->datalength);
852 switch (bincmd) {
853 case FW_HAS_DATA_TO_RECV:
854 offset = sizeof(struct fwheader) + blksize;
855 data += offset;
856 len += offset;
857 if (len >= totlen)
858 exit = 1;
859 break;
860 case FW_HAS_LAST_BLOCK:
861 exit = 1;
862 ret = 0;
863 break;
864 default:
865 exit = 1;
866 break;
867 }
868 } while (!exit);
869
870 if (ret)
871 lbs_pr_err("firmware file format check FAIL\n");
872 else
873 lbs_deb_fw("firmware file format check PASS\n");
874
875 return ret;
876 }
877
878
879 static int if_usb_prog_firmware(struct usb_card_rec *cardp)
880 {
881 int i = 0;
882 static int reset_count = 10;
883 int ret = 0;
884
885 lbs_deb_enter(LBS_DEB_USB);
886
887 if ((ret = request_firmware(&cardp->fw, lbs_fw_name,
888 &cardp->udev->dev)) < 0) {
889 lbs_pr_err("request_firmware() failed with %#x\n", ret);
890 lbs_pr_err("firmware %s not found\n", lbs_fw_name);
891 goto done;
892 }
893
894 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
895 goto release_fw;
896
897 restart:
898 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
899 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
900 ret = -1;
901 goto release_fw;
902 }
903
904 cardp->bootcmdresp = 0;
905 do {
906 int j = 0;
907 i++;
908 /* Issue Boot command = 1, Boot from Download-FW */
909 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
910 /* wait for command response */
911 do {
912 j++;
913 msleep_interruptible(100);
914 } while (cardp->bootcmdresp == 0 && j < 10);
915 } while (cardp->bootcmdresp == 0 && i < 5);
916
917 if (cardp->bootcmdresp <= 0) {
918 if (--reset_count >= 0) {
919 if_usb_reset_device(cardp);
920 goto restart;
921 }
922 return -1;
923 }
924
925 i = 0;
926
927 cardp->totalbytes = 0;
928 cardp->fwlastblksent = 0;
929 cardp->CRC_OK = 1;
930 cardp->fwdnldover = 0;
931 cardp->fwseqnum = -1;
932 cardp->totalbytes = 0;
933 cardp->fwfinalblk = 0;
934
935 /* Send the first firmware packet... */
936 if_usb_send_fw_pkt(cardp);
937
938 /* ... and wait for the process to complete */
939 wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
940
941 del_timer_sync(&cardp->fw_timeout);
942 usb_kill_urb(cardp->rx_urb);
943
944 if (!cardp->fwdnldover) {
945 lbs_pr_info("failed to load fw, resetting device!\n");
946 if (--reset_count >= 0) {
947 if_usb_reset_device(cardp);
948 goto restart;
949 }
950
951 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
952 ret = -1;
953 goto release_fw;
954 }
955
956 release_fw:
957 release_firmware(cardp->fw);
958 cardp->fw = NULL;
959
960 done:
961 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
962 return ret;
963 }
964
965
966 #ifdef CONFIG_PM
967 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
968 {
969 struct usb_card_rec *cardp = usb_get_intfdata(intf);
970 struct lbs_private *priv = cardp->priv;
971
972 lbs_deb_enter(LBS_DEB_USB);
973
974 if (priv->psstate != PS_STATE_FULL_POWER)
975 return -1;
976
977 netif_device_detach(priv->dev);
978 netif_device_detach(priv->mesh_dev);
979
980 /* Unlink tx & rx urb */
981 usb_kill_urb(cardp->tx_urb);
982 usb_kill_urb(cardp->rx_urb);
983
984 lbs_deb_leave(LBS_DEB_USB);
985 return 0;
986 }
987
988 static int if_usb_resume(struct usb_interface *intf)
989 {
990 struct usb_card_rec *cardp = usb_get_intfdata(intf);
991 struct lbs_private *priv = cardp->priv;
992
993 lbs_deb_enter(LBS_DEB_USB);
994
995 if_usb_submit_rx_urb(cardp);
996
997 netif_device_attach(priv->dev);
998 netif_device_attach(priv->mesh_dev);
999
1000 lbs_deb_leave(LBS_DEB_USB);
1001 return 0;
1002 }
1003 #else
1004 #define if_usb_suspend NULL
1005 #define if_usb_resume NULL
1006 #endif
1007
1008 static struct usb_driver if_usb_driver = {
1009 .name = DRV_NAME,
1010 .probe = if_usb_probe,
1011 .disconnect = if_usb_disconnect,
1012 .id_table = if_usb_table,
1013 .suspend = if_usb_suspend,
1014 .resume = if_usb_resume,
1015 };
1016
1017 static int __init if_usb_init_module(void)
1018 {
1019 int ret = 0;
1020
1021 lbs_deb_enter(LBS_DEB_MAIN);
1022
1023 ret = usb_register(&if_usb_driver);
1024
1025 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1026 return ret;
1027 }
1028
1029 static void __exit if_usb_exit_module(void)
1030 {
1031 lbs_deb_enter(LBS_DEB_MAIN);
1032
1033 usb_deregister(&if_usb_driver);
1034
1035 lbs_deb_leave(LBS_DEB_MAIN);
1036 }
1037
1038 module_init(if_usb_init_module);
1039 module_exit(if_usb_exit_module);
1040
1041 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1042 MODULE_AUTHOR("Marvell International Ltd.");
1043 MODULE_LICENSE("GPL");
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