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libertas: drop useless default_fw_name variable
[linux-2.6/linux-loongson.git] / drivers / net / wireless / libertas / if_usb.c
blob6d19d26770272d48521741229d4791f9cc72dc3d
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/list.h>
9 #include <linux/usb.h>
10
11 #define DRV_NAME "usb8xxx"
12
13 #include "host.h"
14 #include "decl.h"
15 #include "defs.h"
16 #include "dev.h"
17 #include "if_usb.h"
18
19 #define MESSAGE_HEADER_LEN 4
20
21 static const char usbdriver_name[] = "usb8xxx";
22
23 static char *lbs_fw_name = "usb8388.bin";
24 module_param_named(fw_name, lbs_fw_name, charp, 0644);
25
26 /*
27 * We need to send a RESET command to all USB devices before
28 * we tear down the USB connection. Otherwise we would not
29 * be able to re-init device the device if the module gets
30 * loaded again. This is a list of all initialized USB devices,
31 * for the reset code see if_usb_reset_device()
32 */
33 static LIST_HEAD(usb_devices);
34
35 static struct usb_device_id if_usb_table[] = {
36 /* Enter the device signature inside */
37 { USB_DEVICE(0x1286, 0x2001) },
38 { USB_DEVICE(0x05a3, 0x8388) },
39 {} /* Terminating entry */
40 };
41
42 MODULE_DEVICE_TABLE(usb, if_usb_table);
43
44 static void if_usb_receive(struct urb *urb);
45 static void if_usb_receive_fwload(struct urb *urb);
46 static int if_usb_prog_firmware(struct usb_card_rec *cardp);
47 static int if_usb_host_to_card(lbs_private *priv, u8 type, u8 *payload, u16 nb);
48 static int if_usb_get_int_status(lbs_private *priv, u8 *);
49 static int if_usb_read_event_cause(lbs_private *);
50 static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb);
51 static void if_usb_free(struct usb_card_rec *cardp);
52 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp);
53 static int if_usb_reset_device(struct usb_card_rec *cardp);
54
55 /**
56 * @brief call back function to handle the status of the URB
57 * @param urb pointer to urb structure
58 * @return N/A
59 */
60 static void if_usb_write_bulk_callback(struct urb *urb)
61 {
62 struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context;
63
64 /* handle the transmission complete validations */
65
66 if (urb->status == 0) {
67 lbs_private *priv = cardp->priv;
68
69 /*
70 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
71 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
72 urb->actual_length);
73 */
74
75 /* Used for both firmware TX and regular TX. priv isn't
76 * valid at firmware load time.
77 */
78 if (priv) {
79 lbs_adapter *adapter = priv->adapter;
80 struct net_device *dev = priv->dev;
81
82 priv->dnld_sent = DNLD_RES_RECEIVED;
83
84 /* Wake main thread if commands are pending */
85 if (!adapter->cur_cmd)
86 wake_up_interruptible(&priv->waitq);
87
88 if ((adapter->connect_status == LBS_CONNECTED)) {
89 netif_wake_queue(dev);
90 netif_wake_queue(priv->mesh_dev);
91 }
92 }
93 } else {
94 /* print the failure status number for debug */
95 lbs_pr_info("URB in failure status: %d\n", urb->status);
96 }
97
98 return;
99 }
100
101 /**
102 * @brief free tx/rx urb, skb and rx buffer
103 * @param cardp pointer usb_card_rec
104 * @return N/A
105 */
106 static void if_usb_free(struct usb_card_rec *cardp)
107 {
108 lbs_deb_enter(LBS_DEB_USB);
109
110 /* Unlink tx & rx urb */
111 usb_kill_urb(cardp->tx_urb);
112 usb_kill_urb(cardp->rx_urb);
113
114 usb_free_urb(cardp->tx_urb);
115 cardp->tx_urb = NULL;
116
117 usb_free_urb(cardp->rx_urb);
118 cardp->rx_urb = NULL;
119
120 kfree(cardp->bulk_out_buffer);
121 cardp->bulk_out_buffer = NULL;
122
123 lbs_deb_leave(LBS_DEB_USB);
124 }
125
126 /**
127 * @brief sets the configuration values
128 * @param ifnum interface number
129 * @param id pointer to usb_device_id
130 * @return 0 on success, error code on failure
131 */
132 static int if_usb_probe(struct usb_interface *intf,
133 const struct usb_device_id *id)
134 {
135 struct usb_device *udev;
136 struct usb_host_interface *iface_desc;
137 struct usb_endpoint_descriptor *endpoint;
138 lbs_private *priv;
139 struct usb_card_rec *cardp;
140 int i;
141
142 udev = interface_to_usbdev(intf);
143
144 cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
145 if (!cardp) {
146 lbs_pr_err("Out of memory allocating private data.\n");
147 goto error;
148 }
149
150 cardp->udev = udev;
151 iface_desc = intf->cur_altsetting;
152
153 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
154 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
155 le16_to_cpu(udev->descriptor.bcdUSB),
156 udev->descriptor.bDeviceClass,
157 udev->descriptor.bDeviceSubClass,
158 udev->descriptor.bDeviceProtocol);
159
160 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
161 endpoint = &iface_desc->endpoint[i].desc;
162 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
163 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
164 USB_ENDPOINT_XFER_BULK)) {
165 /* we found a bulk in endpoint */
166 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
167 le16_to_cpu(endpoint->wMaxPacketSize));
168 if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
169 lbs_deb_usbd(&udev->dev,
170 "Rx URB allocation failed\n");
171 goto dealloc;
172 }
173 cardp->rx_urb_recall = 0;
174
175 cardp->bulk_in_size =
176 le16_to_cpu(endpoint->wMaxPacketSize);
177 cardp->bulk_in_endpointAddr =
178 (endpoint->
179 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
180 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
181 endpoint->bEndpointAddress);
182 }
183
184 if (((endpoint->
185 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
186 USB_DIR_OUT)
187 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
188 USB_ENDPOINT_XFER_BULK)) {
189 /* We found bulk out endpoint */
190 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
191 lbs_deb_usbd(&udev->dev,
192 "Tx URB allocation failed\n");
193 goto dealloc;
194 }
195
196 cardp->bulk_out_size =
197 le16_to_cpu(endpoint->wMaxPacketSize);
198 lbs_deb_usbd(&udev->dev,
199 "Bulk out size is %d\n",
200 le16_to_cpu(endpoint->wMaxPacketSize));
201 cardp->bulk_out_endpointAddr =
202 endpoint->bEndpointAddress;
203 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
204 endpoint->bEndpointAddress);
205 cardp->bulk_out_buffer =
206 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
207 GFP_KERNEL);
208
209 if (!cardp->bulk_out_buffer) {
210 lbs_deb_usbd(&udev->dev,
211 "Could not allocate buffer\n");
212 goto dealloc;
213 }
214 }
215 }
216
217 /* Upload firmware */
218 cardp->rinfo.cardp = cardp;
219 if (if_usb_prog_firmware(cardp)) {
220 lbs_deb_usbd(&udev->dev, "FW upload failed");
221 goto err_prog_firmware;
222 }
223
224 if (!(priv = lbs_add_card(cardp, &udev->dev)))
225 goto err_prog_firmware;
226
227 cardp->priv = priv;
228
229 if (lbs_add_mesh(priv, &udev->dev))
230 goto err_add_mesh;
231
232 cardp->eth_dev = priv->dev;
233
234 priv->hw_host_to_card = if_usb_host_to_card;
235 priv->hw_get_int_status = if_usb_get_int_status;
236 priv->hw_read_event_cause = if_usb_read_event_cause;
237 priv->boot2_version = udev->descriptor.bcdDevice;
238
239 /* Delay 200 ms to waiting for the FW ready */
240 if_usb_submit_rx_urb(cardp);
241 msleep_interruptible(200);
242 priv->adapter->fw_ready = 1;
243
244 if (lbs_start_card(priv))
245 goto err_start_card;
246
247 list_add_tail(&cardp->list, &usb_devices);
248
249 usb_get_dev(udev);
250 usb_set_intfdata(intf, cardp);
251
252 return 0;
253
254 err_start_card:
255 lbs_remove_mesh(priv);
256 err_add_mesh:
257 lbs_remove_card(priv);
258 err_prog_firmware:
259 if_usb_reset_device(cardp);
260 dealloc:
261 if_usb_free(cardp);
262
263 error:
264 return -ENOMEM;
265 }
266
267 /**
268 * @brief free resource and cleanup
269 * @param intf USB interface structure
270 * @return N/A
271 */
272 static void if_usb_disconnect(struct usb_interface *intf)
273 {
274 struct usb_card_rec *cardp = usb_get_intfdata(intf);
275 lbs_private *priv = (lbs_private *) cardp->priv;
276
277 lbs_deb_enter(LBS_DEB_MAIN);
278
279 /* Update Surprise removed to TRUE */
280 cardp->surprise_removed = 1;
281
282 list_del(&cardp->list);
283
284 if (priv) {
285 lbs_adapter *adapter = priv->adapter;
286
287 adapter->surpriseremoved = 1;
288 lbs_stop_card(priv);
289 lbs_remove_mesh(priv);
290 lbs_remove_card(priv);
291 }
292
293 /* Unlink and free urb */
294 if_usb_free(cardp);
295
296 usb_set_intfdata(intf, NULL);
297 usb_put_dev(interface_to_usbdev(intf));
298
299 lbs_deb_leave(LBS_DEB_MAIN);
300 }
301
302 /**
303 * @brief This function download FW
304 * @param priv pointer to lbs_private
305 * @return 0
306 */
307 static int if_prog_firmware(struct usb_card_rec *cardp)
308 {
309 struct FWData *fwdata;
310 struct fwheader *fwheader;
311 u8 *firmware = cardp->fw->data;
312
313 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
314
315 if (!fwdata)
316 return -1;
317
318 fwheader = &fwdata->fwheader;
319
320 if (!cardp->CRC_OK) {
321 cardp->totalbytes = cardp->fwlastblksent;
322 cardp->fwseqnum = cardp->lastseqnum - 1;
323 }
324
325 /*
326 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
327 cardp->totalbytes);
328 */
329
330 memcpy(fwheader, &firmware[cardp->totalbytes],
331 sizeof(struct fwheader));
332
333 cardp->fwlastblksent = cardp->totalbytes;
334 cardp->totalbytes += sizeof(struct fwheader);
335
336 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
337 memcpy(fwdata->data, &firmware[cardp->totalbytes],
338 le32_to_cpu(fwdata->fwheader.datalength));
339
340 /*
341 lbs_deb_usbd(&cardp->udev->dev,
342 "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
343 */
344
345 cardp->fwseqnum = cardp->fwseqnum + 1;
346
347 fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
348 cardp->lastseqnum = cardp->fwseqnum;
349 cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
350
351 if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
352 /*
353 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
354 lbs_deb_usbd(&cardp->udev->dev,
355 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
356 cardp->totalbytes);
357 */
358 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
359 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
360
361 } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
362 /*
363 lbs_deb_usbd(&cardp->udev->dev,
364 "Host has finished FW downloading\n");
365 lbs_deb_usbd(&cardp->udev->dev,
366 "Donwloading FW JUMP BLOCK\n");
367 */
368 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
369 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
370 cardp->fwfinalblk = 1;
371 }
372
373 /*
374 lbs_deb_usbd(&cardp->udev->dev,
375 "The firmware download is done size is %d\n",
376 cardp->totalbytes);
377 */
378
379 kfree(fwdata);
380
381 return 0;
382 }
383
384 static int if_usb_reset_device(struct usb_card_rec *cardp)
385 {
386 int ret;
387 lbs_private * priv = cardp->priv;
388
389 lbs_deb_enter(LBS_DEB_USB);
390
391 /* Try a USB port reset first, if that fails send the reset
392 * command to the firmware.
393 */
394 ret = usb_reset_device(cardp->udev);
395 if (!ret && priv) {
396 msleep(10);
397 ret = lbs_reset_device(priv);
398 msleep(10);
399 }
400
401 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
402
403 return ret;
404 }
405
406 /**
407 * @brief This function transfer the data to the device.
408 * @param priv pointer to lbs_private
409 * @param payload pointer to payload data
410 * @param nb data length
411 * @return 0 or -1
412 */
413 static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb)
414 {
415 int ret = -1;
416
417 /* check if device is removed */
418 if (cardp->surprise_removed) {
419 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
420 goto tx_ret;
421 }
422
423 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
424 usb_sndbulkpipe(cardp->udev,
425 cardp->bulk_out_endpointAddr),
426 payload, nb, if_usb_write_bulk_callback, cardp);
427
428 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
429
430 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
431 /* transfer failed */
432 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
433 ret = -1;
434 } else {
435 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
436 ret = 0;
437 }
438
439 tx_ret:
440 return ret;
441 }
442
443 static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp,
444 void (*callbackfn)(struct urb *urb))
445 {
446 struct sk_buff *skb;
447 struct read_cb_info *rinfo = &cardp->rinfo;
448 int ret = -1;
449
450 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
451 lbs_pr_err("No free skb\n");
452 goto rx_ret;
453 }
454
455 rinfo->skb = skb;
456
457 /* Fill the receive configuration URB and initialise the Rx call back */
458 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
459 usb_rcvbulkpipe(cardp->udev,
460 cardp->bulk_in_endpointAddr),
461 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
462 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
463 rinfo);
464
465 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
466
467 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
468 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
469 /* handle failure conditions */
470 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
471 ret = -1;
472 } else {
473 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
474 ret = 0;
475 }
476
477 rx_ret:
478 return ret;
479 }
480
481 static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp)
482 {
483 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
484 }
485
486 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
487 {
488 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
489 }
490
491 static void if_usb_receive_fwload(struct urb *urb)
492 {
493 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
494 struct sk_buff *skb = rinfo->skb;
495 struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
496 struct fwsyncheader *syncfwheader;
497 struct bootcmdrespStr bootcmdresp;
498
499 if (urb->status) {
500 lbs_deb_usbd(&cardp->udev->dev,
501 "URB status is failed during fw load\n");
502 kfree_skb(skb);
503 return;
504 }
505
506 if (cardp->bootcmdresp == 0) {
507 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
508 sizeof(bootcmdresp));
509 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
510 kfree_skb(skb);
511 if_usb_submit_rx_urb_fwload(cardp);
512 cardp->bootcmdresp = 1;
513 lbs_deb_usbd(&cardp->udev->dev,
514 "Received valid boot command response\n");
515 return;
516 }
517 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
518 lbs_pr_info(
519 "boot cmd response wrong magic number (0x%x)\n",
520 le32_to_cpu(bootcmdresp.u32magicnumber));
521 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
522 lbs_pr_info(
523 "boot cmd response cmd_tag error (%d)\n",
524 bootcmdresp.u8cmd_tag);
525 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
526 lbs_pr_info(
527 "boot cmd response result error (%d)\n",
528 bootcmdresp.u8result);
529 } else {
530 cardp->bootcmdresp = 1;
531 lbs_deb_usbd(&cardp->udev->dev,
532 "Received valid boot command response\n");
533 }
534 kfree_skb(skb);
535 if_usb_submit_rx_urb_fwload(cardp);
536 return;
537 }
538
539 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
540 if (!syncfwheader) {
541 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
542 kfree_skb(skb);
543 return;
544 }
545
546 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
547 sizeof(struct fwsyncheader));
548
549 if (!syncfwheader->cmd) {
550 /*
551 lbs_deb_usbd(&cardp->udev->dev,
552 "FW received Blk with correct CRC\n");
553 lbs_deb_usbd(&cardp->udev->dev,
554 "FW received Blk seqnum = %d\n",
555 syncfwheader->seqnum);
556 */
557 cardp->CRC_OK = 1;
558 } else {
559 lbs_deb_usbd(&cardp->udev->dev,
560 "FW received Blk with CRC error\n");
561 cardp->CRC_OK = 0;
562 }
563
564 kfree_skb(skb);
565
566 if (cardp->fwfinalblk) {
567 cardp->fwdnldover = 1;
568 goto exit;
569 }
570
571 if_prog_firmware(cardp);
572
573 if_usb_submit_rx_urb_fwload(cardp);
574 exit:
575 kfree(syncfwheader);
576
577 return;
578
579 }
580
581 #define MRVDRV_MIN_PKT_LEN 30
582
583 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
584 struct usb_card_rec *cardp,
585 lbs_private *priv)
586 {
587 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
588 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
589 lbs_deb_usbd(&cardp->udev->dev,
590 "Packet length is Invalid\n");
591 kfree_skb(skb);
592 return;
593 }
594
595 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
596 skb_put(skb, recvlength);
597 skb_pull(skb, MESSAGE_HEADER_LEN);
598 lbs_process_rxed_packet(priv, skb);
599 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
600 }
601
602 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
603 struct sk_buff *skb,
604 struct usb_card_rec *cardp,
605 lbs_private *priv)
606 {
607 u8 *cmdbuf;
608 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
609 lbs_deb_usbd(&cardp->udev->dev,
610 "The receive buffer is too large\n");
611 kfree_skb(skb);
612 return;
613 }
614
615 if (!in_interrupt())
616 BUG();
617
618 spin_lock(&priv->adapter->driver_lock);
619 /* take care of cur_cmd = NULL case by reading the
620 * data to clear the interrupt */
621 if (!priv->adapter->cur_cmd) {
622 cmdbuf = priv->upld_buf;
623 priv->adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
624 } else
625 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
626
627 cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
628 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
629 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
630 priv->upld_len);
631
632 kfree_skb(skb);
633 lbs_interrupt(priv->dev);
634 spin_unlock(&priv->adapter->driver_lock);
635
636 lbs_deb_usbd(&cardp->udev->dev,
637 "Wake up main thread to handle cmd response\n");
638
639 return;
640 }
641
642 /**
643 * @brief This function reads of the packet into the upload buff,
644 * wake up the main thread and initialise the Rx callack.
645 *
646 * @param urb pointer to struct urb
647 * @return N/A
648 */
649 static void if_usb_receive(struct urb *urb)
650 {
651 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
652 struct sk_buff *skb = rinfo->skb;
653 struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
654 lbs_private * priv = cardp->priv;
655
656 int recvlength = urb->actual_length;
657 u8 *recvbuff = NULL;
658 u32 recvtype = 0;
659
660 lbs_deb_enter(LBS_DEB_USB);
661
662 if (recvlength) {
663 __le32 tmp;
664
665 if (urb->status) {
666 lbs_deb_usbd(&cardp->udev->dev,
667 "URB status is failed\n");
668 kfree_skb(skb);
669 goto setup_for_next;
670 }
671
672 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
673 memcpy(&tmp, recvbuff, sizeof(u32));
674 recvtype = le32_to_cpu(tmp);
675 lbs_deb_usbd(&cardp->udev->dev,
676 "Recv length = 0x%x, Recv type = 0x%X\n",
677 recvlength, recvtype);
678 } else if (urb->status)
679 goto rx_exit;
680
681 switch (recvtype) {
682 case CMD_TYPE_DATA:
683 process_cmdtypedata(recvlength, skb, cardp, priv);
684 break;
685
686 case CMD_TYPE_REQUEST:
687 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
688 break;
689
690 case CMD_TYPE_INDICATION:
691 /* Event cause handling */
692 spin_lock(&priv->adapter->driver_lock);
693 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
694 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
695 cardp->usb_event_cause);
696 if (cardp->usb_event_cause & 0xffff0000) {
697 lbs_send_tx_feedback(priv);
698 spin_unlock(&priv->adapter->driver_lock);
699 break;
700 }
701 cardp->usb_event_cause <<= 3;
702 cardp->usb_int_cause |= MRVDRV_CARDEVENT;
703 kfree_skb(skb);
704 lbs_interrupt(priv->dev);
705 spin_unlock(&priv->adapter->driver_lock);
706 goto rx_exit;
707 default:
708 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
709 recvtype);
710 kfree_skb(skb);
711 break;
712 }
713
714 setup_for_next:
715 if_usb_submit_rx_urb(cardp);
716 rx_exit:
717 lbs_deb_leave(LBS_DEB_USB);
718 }
719
720 /**
721 * @brief This function downloads data to FW
722 * @param priv pointer to lbs_private structure
723 * @param type type of data
724 * @param buf pointer to data buffer
725 * @param len number of bytes
726 * @return 0 or -1
727 */
728 static int if_usb_host_to_card(lbs_private *priv, u8 type, u8 *payload, u16 nb)
729 {
730 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
731
732 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
733 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
734
735 if (type == MVMS_CMD) {
736 __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
737 priv->dnld_sent = DNLD_CMD_SENT;
738 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
739 MESSAGE_HEADER_LEN);
740
741 } else {
742 __le32 tmp = cpu_to_le32(CMD_TYPE_DATA);
743 priv->dnld_sent = DNLD_DATA_SENT;
744 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
745 MESSAGE_HEADER_LEN);
746 }
747
748 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
749
750 return usb_tx_block(cardp, cardp->bulk_out_buffer,
751 nb + MESSAGE_HEADER_LEN);
752 }
753
754 /* called with adapter->driver_lock held */
755 static int if_usb_get_int_status(lbs_private *priv, u8 *ireg)
756 {
757 struct usb_card_rec *cardp = priv->card;
758
759 *ireg = cardp->usb_int_cause;
760 cardp->usb_int_cause = 0;
761
762 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
763
764 return 0;
765 }
766
767 static int if_usb_read_event_cause(lbs_private * priv)
768 {
769 struct usb_card_rec *cardp = priv->card;
770
771 priv->adapter->eventcause = cardp->usb_event_cause;
772 /* Re-submit rx urb here to avoid event lost issue */
773 if_usb_submit_rx_urb(cardp);
774 return 0;
775 }
776
777 /**
778 * @brief This function issues Boot command to the Boot2 code
779 * @param ivalue 1:Boot from FW by USB-Download
780 * 2:Boot from FW in EEPROM
781 * @return 0
782 */
783 static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
784 {
785 struct bootcmdstr sbootcmd;
786 int i;
787
788 /* Prepare command */
789 sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
790 sbootcmd.u8cmd_tag = ivalue;
791 for (i=0; i<11; i++)
792 sbootcmd.au8dumy[i]=0x00;
793 memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
794
795 /* Issue command */
796 usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
797
798 return 0;
799 }
800
801
802 /**
803 * @brief This function checks the validity of Boot2/FW image.
804 *
805 * @param data pointer to image
806 * len image length
807 * @return 0 or -1
808 */
809 static int check_fwfile_format(u8 *data, u32 totlen)
810 {
811 u32 bincmd, exit;
812 u32 blksize, offset, len;
813 int ret;
814
815 ret = 1;
816 exit = len = 0;
817
818 do {
819 struct fwheader *fwh = (void *)data;
820
821 bincmd = le32_to_cpu(fwh->dnldcmd);
822 blksize = le32_to_cpu(fwh->datalength);
823 switch (bincmd) {
824 case FW_HAS_DATA_TO_RECV:
825 offset = sizeof(struct fwheader) + blksize;
826 data += offset;
827 len += offset;
828 if (len >= totlen)
829 exit = 1;
830 break;
831 case FW_HAS_LAST_BLOCK:
832 exit = 1;
833 ret = 0;
834 break;
835 default:
836 exit = 1;
837 break;
838 }
839 } while (!exit);
840
841 if (ret)
842 lbs_pr_err("firmware file format check FAIL\n");
843 else
844 lbs_deb_fw("firmware file format check PASS\n");
845
846 return ret;
847 }
848
849
850 static int if_usb_prog_firmware(struct usb_card_rec *cardp)
851 {
852 int i = 0;
853 static int reset_count = 10;
854 int ret = 0;
855
856 lbs_deb_enter(LBS_DEB_USB);
857
858 if ((ret = request_firmware(&cardp->fw, lbs_fw_name,
859 &cardp->udev->dev)) < 0) {
860 lbs_pr_err("request_firmware() failed with %#x\n", ret);
861 lbs_pr_err("firmware %s not found\n", lbs_fw_name);
862 goto done;
863 }
864
865 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
866 goto release_fw;
867
868 restart:
869 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
870 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
871 ret = -1;
872 goto release_fw;
873 }
874
875 cardp->bootcmdresp = 0;
876 do {
877 int j = 0;
878 i++;
879 /* Issue Boot command = 1, Boot from Download-FW */
880 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
881 /* wait for command response */
882 do {
883 j++;
884 msleep_interruptible(100);
885 } while (cardp->bootcmdresp == 0 && j < 10);
886 } while (cardp->bootcmdresp == 0 && i < 5);
887
888 if (cardp->bootcmdresp == 0) {
889 if (--reset_count >= 0) {
890 if_usb_reset_device(cardp);
891 goto restart;
892 }
893 return -1;
894 }
895
896 i = 0;
897
898 cardp->totalbytes = 0;
899 cardp->fwlastblksent = 0;
900 cardp->CRC_OK = 1;
901 cardp->fwdnldover = 0;
902 cardp->fwseqnum = -1;
903 cardp->totalbytes = 0;
904 cardp->fwfinalblk = 0;
905
906 if_prog_firmware(cardp);
907
908 do {
909 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
910 i++;
911 msleep_interruptible(100);
912 if (cardp->surprise_removed || i >= 20)
913 break;
914 } while (!cardp->fwdnldover);
915
916 if (!cardp->fwdnldover) {
917 lbs_pr_info("failed to load fw, resetting device!\n");
918 if (--reset_count >= 0) {
919 if_usb_reset_device(cardp);
920 goto restart;
921 }
922
923 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
924 ret = -1;
925 goto release_fw;
926 }
927
928 release_fw:
929 release_firmware(cardp->fw);
930 cardp->fw = NULL;
931
932 done:
933 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
934 return ret;
935 }
936
937
938 #ifdef CONFIG_PM
939 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
940 {
941 struct usb_card_rec *cardp = usb_get_intfdata(intf);
942 lbs_private *priv = cardp->priv;
943
944 lbs_deb_enter(LBS_DEB_USB);
945
946 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
947 return -1;
948
949 if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
950 /* Mesh autostart must be activated while sleeping
951 * On resume it will go back to the current state
952 */
953 struct cmd_ds_mesh_access mesh_access;
954 memset(&mesh_access, 0, sizeof(mesh_access));
955 mesh_access.data[0] = cpu_to_le32(1);
956 lbs_prepare_and_send_command(priv,
957 CMD_MESH_ACCESS,
958 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
959 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
960 }
961
962 netif_device_detach(cardp->eth_dev);
963 netif_device_detach(priv->mesh_dev);
964
965 /* Unlink tx & rx urb */
966 usb_kill_urb(cardp->tx_urb);
967 usb_kill_urb(cardp->rx_urb);
968
969 cardp->rx_urb_recall = 1;
970
971 lbs_deb_leave(LBS_DEB_USB);
972 return 0;
973 }
974
975 static int if_usb_resume(struct usb_interface *intf)
976 {
977 struct usb_card_rec *cardp = usb_get_intfdata(intf);
978 lbs_private *priv = cardp->priv;
979
980 lbs_deb_enter(LBS_DEB_USB);
981
982 cardp->rx_urb_recall = 0;
983
984 if_usb_submit_rx_urb(cardp->priv);
985
986 netif_device_attach(cardp->eth_dev);
987 netif_device_attach(priv->mesh_dev);
988
989 if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
990 /* Mesh autostart was activated while sleeping
991 * Disable it if appropriate
992 */
993 struct cmd_ds_mesh_access mesh_access;
994 memset(&mesh_access, 0, sizeof(mesh_access));
995 mesh_access.data[0] = cpu_to_le32(0);
996 lbs_prepare_and_send_command(priv,
997 CMD_MESH_ACCESS,
998 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
999 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
1000 }
1001
1002 lbs_deb_leave(LBS_DEB_USB);
1003 return 0;
1004 }
1005 #else
1006 #define if_usb_suspend NULL
1007 #define if_usb_resume NULL
1008 #endif
1009
1010 static struct usb_driver if_usb_driver = {
1011 /* driver name */
1012 .name = usbdriver_name,
1013 /* probe function name */
1014 .probe = if_usb_probe,
1015 /* disconnect function name */
1016 .disconnect = if_usb_disconnect,
1017 /* device signature table */
1018 .id_table = if_usb_table,
1019 .suspend = if_usb_suspend,
1020 .resume = if_usb_resume,
1021 };
1022
1023 static int if_usb_init_module(void)
1024 {
1025 int ret = 0;
1026
1027 lbs_deb_enter(LBS_DEB_MAIN);
1028
1029 ret = usb_register(&if_usb_driver);
1030
1031 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1032 return ret;
1033 }
1034
1035 static void if_usb_exit_module(void)
1036 {
1037 struct usb_card_rec *cardp, *cardp_temp;
1038
1039 lbs_deb_enter(LBS_DEB_MAIN);
1040
1041 list_for_each_entry_safe(cardp, cardp_temp, &usb_devices, list) {
1042 lbs_prepare_and_send_command(cardp->priv, CMD_802_11_RESET,
1043 CMD_ACT_HALT, 0, 0, NULL);
1044 }
1045
1046 /* API unregisters the driver from USB subsystem */
1047 usb_deregister(&if_usb_driver);
1048
1049 lbs_deb_leave(LBS_DEB_MAIN);
1050 }
1051
1052 module_init(if_usb_init_module);
1053 module_exit(if_usb_exit_module);
1054
1055 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1056 MODULE_AUTHOR("Marvell International Ltd.");
1057 MODULE_LICENSE("GPL");
linux kernel for loongson