?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
libertas: kill references to mesh autostart
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / net / wireless / libertas / if_usb.c
blobb19a6c9c2a783a829dd9ba8b3826ea85103bfb6c
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->rx_urb_recall = 0;
179
180 cardp->bulk_in_size =
181 le16_to_cpu(endpoint->wMaxPacketSize);
182 cardp->bulk_in_endpointAddr =
183 (endpoint->
184 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
185 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
186 endpoint->bEndpointAddress);
187 }
188
189 if (((endpoint->
190 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
191 USB_DIR_OUT)
192 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
193 USB_ENDPOINT_XFER_BULK)) {
194 /* We found bulk out endpoint */
195 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
196 lbs_deb_usbd(&udev->dev,
197 "Tx URB allocation failed\n");
198 goto dealloc;
199 }
200
201 cardp->bulk_out_size =
202 le16_to_cpu(endpoint->wMaxPacketSize);
203 lbs_deb_usbd(&udev->dev,
204 "Bulk out size is %d\n",
205 le16_to_cpu(endpoint->wMaxPacketSize));
206 cardp->bulk_out_endpointAddr =
207 endpoint->bEndpointAddress;
208 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
209 endpoint->bEndpointAddress);
210 cardp->bulk_out_buffer =
211 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
212 GFP_KERNEL);
213
214 if (!cardp->bulk_out_buffer) {
215 lbs_deb_usbd(&udev->dev,
216 "Could not allocate buffer\n");
217 goto dealloc;
218 }
219 }
220 }
221
222 /* Upload firmware */
223 cardp->rinfo.cardp = cardp;
224 if (if_usb_prog_firmware(cardp)) {
225 lbs_deb_usbd(&udev->dev, "FW upload failed");
226 goto err_prog_firmware;
227 }
228
229 if (!(priv = lbs_add_card(cardp, &udev->dev)))
230 goto err_prog_firmware;
231
232 cardp->priv = priv;
233 cardp->priv->fw_ready = 1;
234
235 cardp->eth_dev = priv->dev;
236
237 priv->hw_host_to_card = if_usb_host_to_card;
238 priv->hw_get_int_status = if_usb_get_int_status;
239 priv->hw_read_event_cause = if_usb_read_event_cause;
240 priv->boot2_version = udev->descriptor.bcdDevice;
241
242 if_usb_submit_rx_urb(cardp);
243
244 if (lbs_start_card(priv))
245 goto err_start_card;
246
247 if_usb_set_boot2_ver(priv);
248
249 usb_get_dev(udev);
250 usb_set_intfdata(intf, cardp);
251
252 return 0;
253
254 err_start_card:
255 lbs_remove_card(priv);
256 err_prog_firmware:
257 if_usb_reset_device(cardp);
258 dealloc:
259 if_usb_free(cardp);
260
261 error:
262 return -ENOMEM;
263 }
264
265 /**
266 * @brief free resource and cleanup
267 * @param intf USB interface structure
268 * @return N/A
269 */
270 static void if_usb_disconnect(struct usb_interface *intf)
271 {
272 struct usb_card_rec *cardp = usb_get_intfdata(intf);
273 struct lbs_private *priv = (struct lbs_private *) cardp->priv;
274
275 lbs_deb_enter(LBS_DEB_MAIN);
276
277 /* Update Surprise removed to TRUE */
278 cardp->surprise_removed = 1;
279
280 if (priv) {
281
282 priv->surpriseremoved = 1;
283 lbs_stop_card(priv);
284 lbs_remove_card(priv);
285 }
286
287 /* this is (apparently?) necessary for future usage of the device */
288 lbs_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT,
289 0, 0, NULL);
290
291 /* Unlink and free urb */
292 if_usb_free(cardp);
293
294 usb_set_intfdata(intf, NULL);
295 usb_put_dev(interface_to_usbdev(intf));
296
297 lbs_deb_leave(LBS_DEB_MAIN);
298 }
299
300 /**
301 * @brief This function download FW
302 * @param priv pointer to struct lbs_private
303 * @return 0
304 */
305 static int if_usb_send_fw_pkt(struct usb_card_rec *cardp)
306 {
307 struct FWData *fwdata;
308 struct fwheader *fwheader;
309 u8 *firmware = cardp->fw->data;
310
311 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
312
313 if (!fwdata)
314 return -1;
315
316 fwheader = &fwdata->fwheader;
317
318 if (!cardp->CRC_OK) {
319 cardp->totalbytes = cardp->fwlastblksent;
320 cardp->fwseqnum = cardp->lastseqnum - 1;
321 }
322
323 /*
324 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
325 cardp->totalbytes);
326 */
327
328 memcpy(fwheader, &firmware[cardp->totalbytes],
329 sizeof(struct fwheader));
330
331 cardp->fwlastblksent = cardp->totalbytes;
332 cardp->totalbytes += sizeof(struct fwheader);
333
334 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
335 memcpy(fwdata->data, &firmware[cardp->totalbytes],
336 le32_to_cpu(fwdata->fwheader.datalength));
337
338 /*
339 lbs_deb_usbd(&cardp->udev->dev,
340 "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
341 */
342
343 cardp->fwseqnum = cardp->fwseqnum + 1;
344
345 fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
346 cardp->lastseqnum = cardp->fwseqnum;
347 cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
348
349 if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
350 /*
351 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
352 lbs_deb_usbd(&cardp->udev->dev,
353 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
354 cardp->totalbytes);
355 */
356 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
357 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
358
359 } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
360 /*
361 lbs_deb_usbd(&cardp->udev->dev,
362 "Host has finished FW downloading\n");
363 lbs_deb_usbd(&cardp->udev->dev,
364 "Donwloading FW JUMP BLOCK\n");
365 */
366 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
367 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
368 cardp->fwfinalblk = 1;
369 }
370
371 /*
372 lbs_deb_usbd(&cardp->udev->dev,
373 "The firmware download is done size is %d\n",
374 cardp->totalbytes);
375 */
376
377 kfree(fwdata);
378
379 return 0;
380 }
381
382 static int if_usb_reset_device(struct usb_card_rec *cardp)
383 {
384 struct cmd_ds_command *cmd = (void *)&cardp->bulk_out_buffer[4];
385 int ret;
386
387 lbs_deb_enter(LBS_DEB_USB);
388
389 *(__le32 *)cardp->bulk_out_buffer = cpu_to_le32(CMD_TYPE_REQUEST);
390
391 cmd->command = cpu_to_le16(CMD_802_11_RESET);
392 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN);
393 cmd->result = cpu_to_le16(0);
394 cmd->seqnum = cpu_to_le16(0x5a5a);
395 cmd->params.reset.action = cpu_to_le16(CMD_ACT_HALT);
396 usb_tx_block(cardp, cardp->bulk_out_buffer, 4 + S_DS_GEN + sizeof(struct cmd_ds_802_11_reset));
397
398 msleep(100);
399 ret = usb_reset_device(cardp->udev);
400 msleep(100);
401
402 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
403
404 return ret;
405 }
406
407 /**
408 * @brief This function transfer the data to the device.
409 * @param priv pointer to struct lbs_private
410 * @param payload pointer to payload data
411 * @param nb data length
412 * @return 0 or -1
413 */
414 static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb)
415 {
416 int ret = -1;
417
418 /* check if device is removed */
419 if (cardp->surprise_removed) {
420 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
421 goto tx_ret;
422 }
423
424 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
425 usb_sndbulkpipe(cardp->udev,
426 cardp->bulk_out_endpointAddr),
427 payload, nb, if_usb_write_bulk_callback, cardp);
428
429 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
430
431 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
432 /* transfer failed */
433 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
434 ret = -1;
435 } else {
436 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
437 ret = 0;
438 }
439
440 tx_ret:
441 return ret;
442 }
443
444 static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp,
445 void (*callbackfn)(struct urb *urb))
446 {
447 struct sk_buff *skb;
448 struct read_cb_info *rinfo = &cardp->rinfo;
449 int ret = -1;
450
451 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
452 lbs_pr_err("No free skb\n");
453 goto rx_ret;
454 }
455
456 rinfo->skb = skb;
457
458 /* Fill the receive configuration URB and initialise the Rx call back */
459 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
460 usb_rcvbulkpipe(cardp->udev,
461 cardp->bulk_in_endpointAddr),
462 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
463 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
464 rinfo);
465
466 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
467
468 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
469 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
470 /* handle failure conditions */
471 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
472 kfree_skb(skb);
473 rinfo->skb = NULL;
474 ret = -1;
475 } else {
476 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
477 ret = 0;
478 }
479
480 rx_ret:
481 return ret;
482 }
483
484 static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp)
485 {
486 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
487 }
488
489 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
490 {
491 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
492 }
493
494 static void if_usb_receive_fwload(struct urb *urb)
495 {
496 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
497 struct sk_buff *skb = rinfo->skb;
498 struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
499 struct fwsyncheader *syncfwheader;
500 struct bootcmdrespStr bootcmdresp;
501
502 if (urb->status) {
503 lbs_deb_usbd(&cardp->udev->dev,
504 "URB status is failed during fw load\n");
505 kfree_skb(skb);
506 return;
507 }
508
509 if (cardp->fwdnldover) {
510 __le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
511
512 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
513 tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
514 lbs_pr_info("Firmware ready event received\n");
515 wake_up(&cardp->fw_wq);
516 } else {
517 lbs_deb_usb("Waiting for confirmation; got %x %x\n", le32_to_cpu(tmp[0]),
518 le32_to_cpu(tmp[1]));
519 if_usb_submit_rx_urb_fwload(cardp);
520 }
521 kfree_skb(skb);
522 return;
523 }
524 if (cardp->bootcmdresp <= 0) {
525 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
526 sizeof(bootcmdresp));
527 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
528 kfree_skb(skb);
529 if_usb_submit_rx_urb_fwload(cardp);
530 cardp->bootcmdresp = 1;
531 lbs_deb_usbd(&cardp->udev->dev,
532 "Received valid boot command response\n");
533 return;
534 }
535 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
536 if (bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_REQUEST) ||
537 bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_DATA) ||
538 bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_INDICATION)) {
539 if (!cardp->bootcmdresp)
540 lbs_pr_info("Firmware already seems alive; resetting\n");
541 cardp->bootcmdresp = -1;
542 } else {
543 lbs_pr_info("boot cmd response wrong magic number (0x%x)\n",
544 le32_to_cpu(bootcmdresp.u32magicnumber));
545 }
546 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
547 lbs_pr_info(
548 "boot cmd response cmd_tag error (%d)\n",
549 bootcmdresp.u8cmd_tag);
550 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
551 lbs_pr_info(
552 "boot cmd response result error (%d)\n",
553 bootcmdresp.u8result);
554 } else {
555 cardp->bootcmdresp = 1;
556 lbs_deb_usbd(&cardp->udev->dev,
557 "Received valid boot command response\n");
558 }
559 kfree_skb(skb);
560 if_usb_submit_rx_urb_fwload(cardp);
561 return;
562 }
563
564 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
565 if (!syncfwheader) {
566 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
567 kfree_skb(skb);
568 return;
569 }
570
571 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
572 sizeof(struct fwsyncheader));
573
574 if (!syncfwheader->cmd) {
575 /*
576 lbs_deb_usbd(&cardp->udev->dev,
577 "FW received Blk with correct CRC\n");
578 lbs_deb_usbd(&cardp->udev->dev,
579 "FW received Blk seqnum = %d\n",
580 syncfwheader->seqnum);
581 */
582 cardp->CRC_OK = 1;
583 } else {
584 lbs_deb_usbd(&cardp->udev->dev,
585 "FW received Blk with CRC error\n");
586 cardp->CRC_OK = 0;
587 }
588
589 kfree_skb(skb);
590
591 /* reschedule timer for 200ms hence */
592 mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
593
594 if (cardp->fwfinalblk) {
595 cardp->fwdnldover = 1;
596 goto exit;
597 }
598
599 if_usb_send_fw_pkt(cardp);
600
601 exit:
602 if_usb_submit_rx_urb_fwload(cardp);
603
604 kfree(syncfwheader);
605
606 return;
607 }
608
609 #define MRVDRV_MIN_PKT_LEN 30
610
611 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
612 struct usb_card_rec *cardp,
613 struct lbs_private *priv)
614 {
615 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
616 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
617 lbs_deb_usbd(&cardp->udev->dev,
618 "Packet length is Invalid\n");
619 kfree_skb(skb);
620 return;
621 }
622
623 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
624 skb_put(skb, recvlength);
625 skb_pull(skb, MESSAGE_HEADER_LEN);
626 lbs_process_rxed_packet(priv, skb);
627 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
628 }
629
630 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
631 struct sk_buff *skb,
632 struct usb_card_rec *cardp,
633 struct lbs_private *priv)
634 {
635 u8 *cmdbuf;
636 if (recvlength > LBS_CMD_BUFFER_SIZE) {
637 lbs_deb_usbd(&cardp->udev->dev,
638 "The receive buffer is too large\n");
639 kfree_skb(skb);
640 return;
641 }
642
643 if (!in_interrupt())
644 BUG();
645
646 spin_lock(&priv->driver_lock);
647 /* take care of cur_cmd = NULL case by reading the
648 * data to clear the interrupt */
649 if (!priv->cur_cmd) {
650 cmdbuf = priv->upld_buf;
651 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
652 } else
653 cmdbuf = (u8 *) priv->cur_cmd->cmdbuf;
654
655 cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
656 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
657 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
658 priv->upld_len);
659
660 kfree_skb(skb);
661 lbs_interrupt(priv);
662 spin_unlock(&priv->driver_lock);
663
664 lbs_deb_usbd(&cardp->udev->dev,
665 "Wake up main thread to handle cmd response\n");
666
667 return;
668 }
669
670 /**
671 * @brief This function reads of the packet into the upload buff,
672 * wake up the main thread and initialise the Rx callack.
673 *
674 * @param urb pointer to struct urb
675 * @return N/A
676 */
677 static void if_usb_receive(struct urb *urb)
678 {
679 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
680 struct sk_buff *skb = rinfo->skb;
681 struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
682 struct lbs_private *priv = cardp->priv;
683
684 int recvlength = urb->actual_length;
685 u8 *recvbuff = NULL;
686 u32 recvtype = 0;
687
688 lbs_deb_enter(LBS_DEB_USB);
689
690 if (recvlength) {
691 __le32 tmp;
692
693 if (urb->status) {
694 lbs_deb_usbd(&cardp->udev->dev,
695 "URB status is failed\n");
696 kfree_skb(skb);
697 goto setup_for_next;
698 }
699
700 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
701 memcpy(&tmp, recvbuff, sizeof(u32));
702 recvtype = le32_to_cpu(tmp);
703 lbs_deb_usbd(&cardp->udev->dev,
704 "Recv length = 0x%x, Recv type = 0x%X\n",
705 recvlength, recvtype);
706 } else if (urb->status) {
707 kfree_skb(skb);
708 goto rx_exit;
709 }
710
711 switch (recvtype) {
712 case CMD_TYPE_DATA:
713 process_cmdtypedata(recvlength, skb, cardp, priv);
714 break;
715
716 case CMD_TYPE_REQUEST:
717 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
718 break;
719
720 case CMD_TYPE_INDICATION:
721 /* Event cause handling */
722 spin_lock(&priv->driver_lock);
723 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
724 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
725 cardp->usb_event_cause);
726 if (cardp->usb_event_cause & 0xffff0000) {
727 lbs_send_tx_feedback(priv);
728 spin_unlock(&priv->driver_lock);
729 break;
730 }
731 cardp->usb_event_cause <<= 3;
732 cardp->usb_int_cause |= MRVDRV_CARDEVENT;
733 kfree_skb(skb);
734 lbs_interrupt(priv);
735 spin_unlock(&priv->driver_lock);
736 goto rx_exit;
737 default:
738 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
739 recvtype);
740 kfree_skb(skb);
741 break;
742 }
743
744 setup_for_next:
745 if_usb_submit_rx_urb(cardp);
746 rx_exit:
747 lbs_deb_leave(LBS_DEB_USB);
748 }
749
750 /**
751 * @brief This function downloads data to FW
752 * @param priv pointer to struct lbs_private structure
753 * @param type type of data
754 * @param buf pointer to data buffer
755 * @param len number of bytes
756 * @return 0 or -1
757 */
758 static int if_usb_host_to_card(struct lbs_private *priv,
759 u8 type,
760 u8 *payload,
761 u16 nb)
762 {
763 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
764
765 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
766 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
767
768 if (type == MVMS_CMD) {
769 __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
770 priv->dnld_sent = DNLD_CMD_SENT;
771 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
772 MESSAGE_HEADER_LEN);
773
774 } else {
775 __le32 tmp = cpu_to_le32(CMD_TYPE_DATA);
776 priv->dnld_sent = DNLD_DATA_SENT;
777 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
778 MESSAGE_HEADER_LEN);
779 }
780
781 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
782
783 return usb_tx_block(cardp, cardp->bulk_out_buffer,
784 nb + MESSAGE_HEADER_LEN);
785 }
786
787 /* called with priv->driver_lock held */
788 static int if_usb_get_int_status(struct lbs_private *priv, u8 *ireg)
789 {
790 struct usb_card_rec *cardp = priv->card;
791
792 *ireg = cardp->usb_int_cause;
793 cardp->usb_int_cause = 0;
794
795 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
796
797 return 0;
798 }
799
800 static int if_usb_read_event_cause(struct lbs_private *priv)
801 {
802 struct usb_card_rec *cardp = priv->card;
803
804 priv->eventcause = cardp->usb_event_cause;
805 /* Re-submit rx urb here to avoid event lost issue */
806 if_usb_submit_rx_urb(cardp);
807 return 0;
808 }
809
810 /**
811 * @brief This function issues Boot command to the Boot2 code
812 * @param ivalue 1:Boot from FW by USB-Download
813 * 2:Boot from FW in EEPROM
814 * @return 0
815 */
816 static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
817 {
818 struct bootcmdstr sbootcmd;
819 int i;
820
821 /* Prepare command */
822 sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
823 sbootcmd.u8cmd_tag = ivalue;
824 for (i=0; i<11; i++)
825 sbootcmd.au8dumy[i]=0x00;
826 memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
827
828 /* Issue command */
829 usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
830
831 return 0;
832 }
833
834
835 /**
836 * @brief This function checks the validity of Boot2/FW image.
837 *
838 * @param data pointer to image
839 * len image length
840 * @return 0 or -1
841 */
842 static int check_fwfile_format(u8 *data, u32 totlen)
843 {
844 u32 bincmd, exit;
845 u32 blksize, offset, len;
846 int ret;
847
848 ret = 1;
849 exit = len = 0;
850
851 do {
852 struct fwheader *fwh = (void *)data;
853
854 bincmd = le32_to_cpu(fwh->dnldcmd);
855 blksize = le32_to_cpu(fwh->datalength);
856 switch (bincmd) {
857 case FW_HAS_DATA_TO_RECV:
858 offset = sizeof(struct fwheader) + blksize;
859 data += offset;
860 len += offset;
861 if (len >= totlen)
862 exit = 1;
863 break;
864 case FW_HAS_LAST_BLOCK:
865 exit = 1;
866 ret = 0;
867 break;
868 default:
869 exit = 1;
870 break;
871 }
872 } while (!exit);
873
874 if (ret)
875 lbs_pr_err("firmware file format check FAIL\n");
876 else
877 lbs_deb_fw("firmware file format check PASS\n");
878
879 return ret;
880 }
881
882
883 static int if_usb_prog_firmware(struct usb_card_rec *cardp)
884 {
885 int i = 0;
886 static int reset_count = 10;
887 int ret = 0;
888
889 lbs_deb_enter(LBS_DEB_USB);
890
891 if ((ret = request_firmware(&cardp->fw, lbs_fw_name,
892 &cardp->udev->dev)) < 0) {
893 lbs_pr_err("request_firmware() failed with %#x\n", ret);
894 lbs_pr_err("firmware %s not found\n", lbs_fw_name);
895 goto done;
896 }
897
898 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
899 goto release_fw;
900
901 restart:
902 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
903 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
904 ret = -1;
905 goto release_fw;
906 }
907
908 cardp->bootcmdresp = 0;
909 do {
910 int j = 0;
911 i++;
912 /* Issue Boot command = 1, Boot from Download-FW */
913 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
914 /* wait for command response */
915 do {
916 j++;
917 msleep_interruptible(100);
918 } while (cardp->bootcmdresp == 0 && j < 10);
919 } while (cardp->bootcmdresp == 0 && i < 5);
920
921 if (cardp->bootcmdresp <= 0) {
922 if (--reset_count >= 0) {
923 if_usb_reset_device(cardp);
924 goto restart;
925 }
926 return -1;
927 }
928
929 i = 0;
930
931 cardp->totalbytes = 0;
932 cardp->fwlastblksent = 0;
933 cardp->CRC_OK = 1;
934 cardp->fwdnldover = 0;
935 cardp->fwseqnum = -1;
936 cardp->totalbytes = 0;
937 cardp->fwfinalblk = 0;
938
939 /* Send the first firmware packet... */
940 if_usb_send_fw_pkt(cardp);
941
942 /* ... and wait for the process to complete */
943 wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
944
945 del_timer_sync(&cardp->fw_timeout);
946 usb_kill_urb(cardp->rx_urb);
947
948 if (!cardp->fwdnldover) {
949 lbs_pr_info("failed to load fw, resetting device!\n");
950 if (--reset_count >= 0) {
951 if_usb_reset_device(cardp);
952 goto restart;
953 }
954
955 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
956 ret = -1;
957 goto release_fw;
958 }
959
960 release_fw:
961 release_firmware(cardp->fw);
962 cardp->fw = NULL;
963
964 done:
965 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
966 return ret;
967 }
968
969
970 #ifdef CONFIG_PM
971 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
972 {
973 struct usb_card_rec *cardp = usb_get_intfdata(intf);
974 struct lbs_private *priv = cardp->priv;
975
976 lbs_deb_enter(LBS_DEB_USB);
977
978 if (priv->psstate != PS_STATE_FULL_POWER)
979 return -1;
980
981 netif_device_detach(cardp->eth_dev);
982 netif_device_detach(priv->mesh_dev);
983
984 /* Unlink tx & rx urb */
985 usb_kill_urb(cardp->tx_urb);
986 usb_kill_urb(cardp->rx_urb);
987
988 cardp->rx_urb_recall = 1;
989
990 lbs_deb_leave(LBS_DEB_USB);
991 return 0;
992 }
993
994 static int if_usb_resume(struct usb_interface *intf)
995 {
996 struct usb_card_rec *cardp = usb_get_intfdata(intf);
997 struct lbs_private *priv = cardp->priv;
998
999 lbs_deb_enter(LBS_DEB_USB);
1000
1001 cardp->rx_urb_recall = 0;
1002
1003 if_usb_submit_rx_urb(cardp);
1004
1005 netif_device_attach(cardp->eth_dev);
1006 netif_device_attach(priv->mesh_dev);
1007
1008 lbs_deb_leave(LBS_DEB_USB);
1009 return 0;
1010 }
1011 #else
1012 #define if_usb_suspend NULL
1013 #define if_usb_resume NULL
1014 #endif
1015
1016 static struct usb_driver if_usb_driver = {
1017 .name = DRV_NAME,
1018 .probe = if_usb_probe,
1019 .disconnect = if_usb_disconnect,
1020 .id_table = if_usb_table,
1021 .suspend = if_usb_suspend,
1022 .resume = if_usb_resume,
1023 };
1024
1025 static int __init if_usb_init_module(void)
1026 {
1027 int ret = 0;
1028
1029 lbs_deb_enter(LBS_DEB_MAIN);
1030
1031 ret = usb_register(&if_usb_driver);
1032
1033 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1034 return ret;
1035 }
1036
1037 static void __exit if_usb_exit_module(void)
1038 {
1039 lbs_deb_enter(LBS_DEB_MAIN);
1040
1041 usb_deregister(&if_usb_driver);
1042
1043 lbs_deb_leave(LBS_DEB_MAIN);
1044 }
1045
1046 module_init(if_usb_init_module);
1047 module_exit(if_usb_exit_module);
1048
1049 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1050 MODULE_AUTHOR("Marvell International Ltd.");
1051 MODULE_LICENSE("GPL");
Community contributions to the Openmoko Kernel