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[PATCH] libertas: move generic firmware reset command to common code
[firewire-audio.git] / drivers / net / wireless / libertas / if_usb.c
blobe38fce73cf749bf5e9a739875294020c3779d241
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 #include "decl.h"
19
20 #define MESSAGE_HEADER_LEN 4
21
22 static const char usbdriver_name[] = "usb8xxx";
23 static u8 *default_fw_name = "usb8388.bin";
24
25 char *libertas_fw_name = NULL;
26 module_param_named(fw_name, libertas_fw_name, charp, 0644);
27
28 /*
29 * We need to send a RESET command to all USB devices before
30 * we tear down the USB connection. Otherwise we would not
31 * be able to re-init device the device if the module gets
32 * loaded again. This is a list of all initialized USB devices,
33 * for the reset code see if_usb_reset_device()
34 */
35 static LIST_HEAD(usb_devices);
36
37 static struct usb_device_id if_usb_table[] = {
38 /* Enter the device signature inside */
39 { USB_DEVICE(0x1286, 0x2001) },
40 { USB_DEVICE(0x05a3, 0x8388) },
41 {} /* Terminating entry */
42 };
43
44 MODULE_DEVICE_TABLE(usb, if_usb_table);
45
46 static void if_usb_receive(struct urb *urb);
47 static void if_usb_receive_fwload(struct urb *urb);
48 static int if_usb_register_dev(wlan_private * priv);
49 static int if_usb_unregister_dev(wlan_private *);
50 static int if_usb_prog_firmware(wlan_private *);
51 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
52 static int if_usb_get_int_status(wlan_private * priv, u8 *);
53 static int if_usb_read_event_cause(wlan_private *);
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 wlan_private *priv = (wlan_private *) (urb->context);
63 wlan_adapter *adapter = priv->adapter;
64 struct net_device *dev = priv->dev;
65
66 /* handle the transmission complete validations */
67
68 if (urb->status != 0) {
69 /* print the failure status number for debug */
70 lbs_pr_info("URB in failure status: %d\n", urb->status);
71 } else {
72 /*
73 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
74 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
75 urb->actual_length);
76 */
77 priv->dnld_sent = DNLD_RES_RECEIVED;
78 /* Wake main thread if commands are pending */
79 if (!adapter->cur_cmd)
80 wake_up_interruptible(&priv->waitq);
81 if ((adapter->connect_status == LIBERTAS_CONNECTED)) {
82 netif_wake_queue(dev);
83 netif_wake_queue(priv->mesh_dev);
84 }
85 }
86
87 return;
88 }
89
90 /**
91 * @brief free tx/rx urb, skb and rx buffer
92 * @param cardp pointer usb_card_rec
93 * @return N/A
94 */
95 void if_usb_free(struct usb_card_rec *cardp)
96 {
97 lbs_deb_enter(LBS_DEB_USB);
98
99 /* Unlink tx & rx urb */
100 usb_kill_urb(cardp->tx_urb);
101 usb_kill_urb(cardp->rx_urb);
102
103 usb_free_urb(cardp->tx_urb);
104 cardp->tx_urb = NULL;
105
106 usb_free_urb(cardp->rx_urb);
107 cardp->rx_urb = NULL;
108
109 kfree(cardp->bulk_out_buffer);
110 cardp->bulk_out_buffer = NULL;
111
112 lbs_deb_leave(LBS_DEB_USB);
113 }
114
115 /**
116 * @brief sets the configuration values
117 * @param ifnum interface number
118 * @param id pointer to usb_device_id
119 * @return 0 on success, error code on failure
120 */
121 static int if_usb_probe(struct usb_interface *intf,
122 const struct usb_device_id *id)
123 {
124 struct usb_device *udev;
125 struct usb_host_interface *iface_desc;
126 struct usb_endpoint_descriptor *endpoint;
127 wlan_private *priv;
128 struct usb_card_rec *cardp;
129 int i;
130
131 udev = interface_to_usbdev(intf);
132
133 cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
134 if (!cardp) {
135 lbs_pr_err("Out of memory allocating private data.\n");
136 goto error;
137 }
138
139 cardp->udev = udev;
140 iface_desc = intf->cur_altsetting;
141
142 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
143 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
144 le16_to_cpu(udev->descriptor.bcdUSB),
145 udev->descriptor.bDeviceClass,
146 udev->descriptor.bDeviceSubClass,
147 udev->descriptor.bDeviceProtocol);
148
149 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
150 endpoint = &iface_desc->endpoint[i].desc;
151 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
152 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
153 USB_ENDPOINT_XFER_BULK)) {
154 /* we found a bulk in endpoint */
155 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
156 le16_to_cpu(endpoint->wMaxPacketSize));
157 if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
158 lbs_deb_usbd(&udev->dev,
159 "Rx URB allocation failed\n");
160 goto dealloc;
161 }
162 cardp->rx_urb_recall = 0;
163
164 cardp->bulk_in_size =
165 le16_to_cpu(endpoint->wMaxPacketSize);
166 cardp->bulk_in_endpointAddr =
167 (endpoint->
168 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
169 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
170 endpoint->bEndpointAddress);
171 }
172
173 if (((endpoint->
174 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
175 USB_DIR_OUT)
176 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
177 USB_ENDPOINT_XFER_BULK)) {
178 /* We found bulk out endpoint */
179 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
180 lbs_deb_usbd(&udev->dev,
181 "Tx URB allocation failed\n");
182 goto dealloc;
183 }
184
185 cardp->bulk_out_size =
186 le16_to_cpu(endpoint->wMaxPacketSize);
187 lbs_deb_usbd(&udev->dev,
188 "Bulk out size is %d\n",
189 le16_to_cpu(endpoint->wMaxPacketSize));
190 cardp->bulk_out_endpointAddr =
191 endpoint->bEndpointAddress;
192 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
193 endpoint->bEndpointAddress);
194 cardp->bulk_out_buffer =
195 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
196 GFP_KERNEL);
197
198 if (!cardp->bulk_out_buffer) {
199 lbs_deb_usbd(&udev->dev,
200 "Could not allocate buffer\n");
201 goto dealloc;
202 }
203 }
204 }
205
206 if (!(priv = libertas_add_card(cardp, &udev->dev)))
207 goto dealloc;
208
209 if (libertas_add_mesh(priv, &udev->dev))
210 goto err_add_mesh;
211
212 priv->hw_register_dev = if_usb_register_dev;
213 priv->hw_unregister_dev = if_usb_unregister_dev;
214 priv->hw_prog_firmware = if_usb_prog_firmware;
215 priv->hw_host_to_card = if_usb_host_to_card;
216 priv->hw_get_int_status = if_usb_get_int_status;
217 priv->hw_read_event_cause = if_usb_read_event_cause;
218
219 if (libertas_activate_card(priv, libertas_fw_name))
220 goto err_activate_card;
221
222 list_add_tail(&cardp->list, &usb_devices);
223
224 usb_get_dev(udev);
225 usb_set_intfdata(intf, cardp);
226
227 return 0;
228
229 err_activate_card:
230 libertas_remove_mesh(priv);
231 err_add_mesh:
232 free_netdev(priv->dev);
233 kfree(priv->adapter);
234 dealloc:
235 if_usb_free(cardp);
236
237 error:
238 return -ENOMEM;
239 }
240
241 /**
242 * @brief free resource and cleanup
243 * @param intf USB interface structure
244 * @return N/A
245 */
246 static void if_usb_disconnect(struct usb_interface *intf)
247 {
248 struct usb_card_rec *cardp = usb_get_intfdata(intf);
249 wlan_private *priv = (wlan_private *) cardp->priv;
250 wlan_adapter *adapter = NULL;
251
252 adapter = priv->adapter;
253
254 /*
255 * Update Surprise removed to TRUE
256 */
257 adapter->surpriseremoved = 1;
258
259 list_del(&cardp->list);
260
261 /* card is removed and we can call wlan_remove_card */
262 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
263 libertas_remove_mesh(priv);
264 libertas_remove_card(priv);
265
266 /* Unlink and free urb */
267 if_usb_free(cardp);
268
269 usb_set_intfdata(intf, NULL);
270 usb_put_dev(interface_to_usbdev(intf));
271
272 return;
273 }
274
275 /**
276 * @brief This function download FW
277 * @param priv pointer to wlan_private
278 * @return 0
279 */
280 static int if_prog_firmware(wlan_private * priv)
281 {
282 struct usb_card_rec *cardp = priv->card;
283 struct FWData *fwdata;
284 struct fwheader *fwheader;
285 u8 *firmware = priv->firmware->data;
286
287 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
288
289 if (!fwdata)
290 return -1;
291
292 fwheader = &fwdata->fwheader;
293
294 if (!cardp->CRC_OK) {
295 cardp->totalbytes = cardp->fwlastblksent;
296 cardp->fwseqnum = cardp->lastseqnum - 1;
297 }
298
299 /*
300 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
301 cardp->totalbytes);
302 */
303
304 memcpy(fwheader, &firmware[cardp->totalbytes],
305 sizeof(struct fwheader));
306
307 cardp->fwlastblksent = cardp->totalbytes;
308 cardp->totalbytes += sizeof(struct fwheader);
309
310 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
311 memcpy(fwdata->data, &firmware[cardp->totalbytes],
312 le32_to_cpu(fwdata->fwheader.datalength));
313
314 /*
315 lbs_deb_usbd(&cardp->udev->dev,
316 "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
317 */
318
319 cardp->fwseqnum = cardp->fwseqnum + 1;
320
321 fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
322 cardp->lastseqnum = cardp->fwseqnum;
323 cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
324
325 if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
326 /*
327 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
328 lbs_deb_usbd(&cardp->udev->dev,
329 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
330 cardp->totalbytes);
331 */
332 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
333 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
334
335 } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
336 /*
337 lbs_deb_usbd(&cardp->udev->dev,
338 "Host has finished FW downloading\n");
339 lbs_deb_usbd(&cardp->udev->dev,
340 "Donwloading FW JUMP BLOCK\n");
341 */
342 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
343 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
344 cardp->fwfinalblk = 1;
345 }
346
347 /*
348 lbs_deb_usbd(&cardp->udev->dev,
349 "The firmware download is done size is %d\n",
350 cardp->totalbytes);
351 */
352
353 kfree(fwdata);
354
355 return 0;
356 }
357
358 static int if_usb_reset_device(wlan_private *priv)
359 {
360 int ret;
361 struct usb_card_rec *cardp = priv->card;
362
363 lbs_deb_enter(LBS_DEB_USB);
364
365 /* Try a USB port reset first, if that fails send the reset
366 * command to the firmware.
367 */
368 ret = usb_reset_device(cardp->udev);
369 if (!ret) {
370 msleep(10);
371 ret = libertas_reset_device(priv);
372 msleep(10);
373 }
374
375 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
376
377 return ret;
378 }
379
380 /**
381 * @brief This function transfer the data to the device.
382 * @param priv pointer to wlan_private
383 * @param payload pointer to payload data
384 * @param nb data length
385 * @return 0 or -1
386 */
387 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
388 {
389 /* pointer to card structure */
390 struct usb_card_rec *cardp = priv->card;
391 int ret = -1;
392
393 /* check if device is removed */
394 if (priv->adapter->surpriseremoved) {
395 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
396 goto tx_ret;
397 }
398
399 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
400 usb_sndbulkpipe(cardp->udev,
401 cardp->bulk_out_endpointAddr),
402 payload, nb, if_usb_write_bulk_callback, priv);
403
404 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
405
406 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
407 /* transfer failed */
408 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
409 ret = -1;
410 } else {
411 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
412 ret = 0;
413 }
414
415 tx_ret:
416 return ret;
417 }
418
419 static int __if_usb_submit_rx_urb(wlan_private * priv,
420 void (*callbackfn)
421 (struct urb *urb))
422 {
423 struct usb_card_rec *cardp = priv->card;
424 struct sk_buff *skb;
425 struct read_cb_info *rinfo = &cardp->rinfo;
426 int ret = -1;
427
428 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
429 lbs_pr_err("No free skb\n");
430 goto rx_ret;
431 }
432
433 rinfo->skb = skb;
434
435 /* Fill the receive configuration URB and initialise the Rx call back */
436 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
437 usb_rcvbulkpipe(cardp->udev,
438 cardp->bulk_in_endpointAddr),
439 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
440 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
441 rinfo);
442
443 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
444
445 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
446 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
447 /* handle failure conditions */
448 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
449 ret = -1;
450 } else {
451 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
452 ret = 0;
453 }
454
455 rx_ret:
456 return ret;
457 }
458
459 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
460 {
461 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
462 }
463
464 static inline int if_usb_submit_rx_urb(wlan_private * priv)
465 {
466 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
467 }
468
469 static void if_usb_receive_fwload(struct urb *urb)
470 {
471 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
472 wlan_private *priv = rinfo->priv;
473 struct sk_buff *skb = rinfo->skb;
474 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
475 struct fwsyncheader *syncfwheader;
476 struct bootcmdrespStr bootcmdresp;
477
478 if (urb->status) {
479 lbs_deb_usbd(&cardp->udev->dev,
480 "URB status is failed during fw load\n");
481 kfree_skb(skb);
482 return;
483 }
484
485 if (cardp->bootcmdresp == 0) {
486 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
487 sizeof(bootcmdresp));
488 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
489 kfree_skb(skb);
490 if_usb_submit_rx_urb_fwload(priv);
491 cardp->bootcmdresp = 1;
492 lbs_deb_usbd(&cardp->udev->dev,
493 "Received valid boot command response\n");
494 return;
495 }
496 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
497 lbs_pr_info(
498 "boot cmd response wrong magic number (0x%x)\n",
499 le32_to_cpu(bootcmdresp.u32magicnumber));
500 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
501 lbs_pr_info(
502 "boot cmd response cmd_tag error (%d)\n",
503 bootcmdresp.u8cmd_tag);
504 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
505 lbs_pr_info(
506 "boot cmd response result error (%d)\n",
507 bootcmdresp.u8result);
508 } else {
509 cardp->bootcmdresp = 1;
510 lbs_deb_usbd(&cardp->udev->dev,
511 "Received valid boot command response\n");
512 }
513 kfree_skb(skb);
514 if_usb_submit_rx_urb_fwload(priv);
515 return;
516 }
517
518 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
519 if (!syncfwheader) {
520 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
521 kfree_skb(skb);
522 return;
523 }
524
525 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
526 sizeof(struct fwsyncheader));
527
528 if (!syncfwheader->cmd) {
529 /*
530 lbs_deb_usbd(&cardp->udev->dev,
531 "FW received Blk with correct CRC\n");
532 lbs_deb_usbd(&cardp->udev->dev,
533 "FW received Blk seqnum = %d\n",
534 syncfwheader->seqnum);
535 */
536 cardp->CRC_OK = 1;
537 } else {
538 lbs_deb_usbd(&cardp->udev->dev,
539 "FW received Blk with CRC error\n");
540 cardp->CRC_OK = 0;
541 }
542
543 kfree_skb(skb);
544
545 if (cardp->fwfinalblk) {
546 cardp->fwdnldover = 1;
547 goto exit;
548 }
549
550 if_prog_firmware(priv);
551
552 if_usb_submit_rx_urb_fwload(priv);
553 exit:
554 kfree(syncfwheader);
555
556 return;
557
558 }
559
560 #define MRVDRV_MIN_PKT_LEN 30
561
562 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
563 struct usb_card_rec *cardp,
564 wlan_private *priv)
565 {
566 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
567 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
568 lbs_deb_usbd(&cardp->udev->dev,
569 "Packet length is Invalid\n");
570 kfree_skb(skb);
571 return;
572 }
573
574 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
575 skb_put(skb, recvlength);
576 skb_pull(skb, MESSAGE_HEADER_LEN);
577 libertas_process_rxed_packet(priv, skb);
578 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
579 }
580
581 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
582 struct sk_buff *skb,
583 struct usb_card_rec *cardp,
584 wlan_private *priv)
585 {
586 u8 *cmdbuf;
587 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
588 lbs_deb_usbd(&cardp->udev->dev,
589 "The receive buffer is too large\n");
590 kfree_skb(skb);
591 return;
592 }
593
594 if (!in_interrupt())
595 BUG();
596
597 spin_lock(&priv->adapter->driver_lock);
598 /* take care of cur_cmd = NULL case by reading the
599 * data to clear the interrupt */
600 if (!priv->adapter->cur_cmd) {
601 cmdbuf = priv->upld_buf;
602 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
603 } else
604 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
605
606 cardp->usb_int_cause |= his_cmdupldrdy;
607 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
608 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
609 priv->upld_len);
610
611 kfree_skb(skb);
612 libertas_interrupt(priv->dev);
613 spin_unlock(&priv->adapter->driver_lock);
614
615 lbs_deb_usbd(&cardp->udev->dev,
616 "Wake up main thread to handle cmd response\n");
617
618 return;
619 }
620
621 /**
622 * @brief This function reads of the packet into the upload buff,
623 * wake up the main thread and initialise the Rx callack.
624 *
625 * @param urb pointer to struct urb
626 * @return N/A
627 */
628 static void if_usb_receive(struct urb *urb)
629 {
630 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
631 wlan_private *priv = rinfo->priv;
632 struct sk_buff *skb = rinfo->skb;
633 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
634
635 int recvlength = urb->actual_length;
636 u8 *recvbuff = NULL;
637 u32 recvtype;
638
639 lbs_deb_enter(LBS_DEB_USB);
640
641 if (recvlength) {
642 if (urb->status) {
643 lbs_deb_usbd(&cardp->udev->dev,
644 "URB status is failed\n");
645 kfree_skb(skb);
646 goto setup_for_next;
647 }
648
649 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
650 memcpy(&recvtype, recvbuff, sizeof(u32));
651 lbs_deb_usbd(&cardp->udev->dev,
652 "Recv length = 0x%x\n", recvlength);
653 lbs_deb_usbd(&cardp->udev->dev,
654 "Receive type = 0x%X\n", recvtype);
655 recvtype = le32_to_cpu(recvtype);
656 lbs_deb_usbd(&cardp->udev->dev,
657 "Receive type after = 0x%X\n", recvtype);
658 } else if (urb->status)
659 goto rx_exit;
660
661
662 switch (recvtype) {
663 case CMD_TYPE_DATA:
664 process_cmdtypedata(recvlength, skb, cardp, priv);
665 break;
666
667 case CMD_TYPE_REQUEST:
668 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
669 break;
670
671 case CMD_TYPE_INDICATION:
672 /* Event cause handling */
673 spin_lock(&priv->adapter->driver_lock);
674 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
675 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
676 cardp->usb_event_cause);
677 if (cardp->usb_event_cause & 0xffff0000) {
678 libertas_send_tx_feedback(priv);
679 spin_unlock(&priv->adapter->driver_lock);
680 break;
681 }
682 cardp->usb_event_cause <<= 3;
683 cardp->usb_int_cause |= his_cardevent;
684 kfree_skb(skb);
685 libertas_interrupt(priv->dev);
686 spin_unlock(&priv->adapter->driver_lock);
687 goto rx_exit;
688 default:
689 kfree_skb(skb);
690 break;
691 }
692
693 setup_for_next:
694 if_usb_submit_rx_urb(priv);
695 rx_exit:
696 lbs_deb_leave(LBS_DEB_USB);
697 }
698
699 /**
700 * @brief This function downloads data to FW
701 * @param priv pointer to wlan_private structure
702 * @param type type of data
703 * @param buf pointer to data buffer
704 * @param len number of bytes
705 * @return 0 or -1
706 */
707 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
708 {
709 int ret = -1;
710 u32 tmp;
711 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
712
713 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
714 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
715
716 if (type == MVMS_CMD) {
717 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
718 priv->dnld_sent = DNLD_CMD_SENT;
719 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
720 MESSAGE_HEADER_LEN);
721
722 } else {
723 tmp = cpu_to_le32(CMD_TYPE_DATA);
724 priv->dnld_sent = DNLD_DATA_SENT;
725 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
726 MESSAGE_HEADER_LEN);
727 }
728
729 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
730
731 ret =
732 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
733
734 return ret;
735 }
736
737 /* called with adapter->driver_lock held */
738 static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
739 {
740 struct usb_card_rec *cardp = priv->card;
741
742 *ireg = cardp->usb_int_cause;
743 cardp->usb_int_cause = 0;
744
745 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
746
747 return 0;
748 }
749
750 static int if_usb_read_event_cause(wlan_private * priv)
751 {
752 struct usb_card_rec *cardp = priv->card;
753 priv->adapter->eventcause = cardp->usb_event_cause;
754 /* Re-submit rx urb here to avoid event lost issue */
755 if_usb_submit_rx_urb(priv);
756 return 0;
757 }
758
759 static int if_usb_unregister_dev(wlan_private * priv)
760 {
761 int ret = 0;
762
763 /* Need to send a Reset command to device before USB resources freed
764 * and wlan_remove_card() called, then device can handle FW download
765 * again.
766 */
767 if (priv)
768 libertas_reset_device(priv);
769
770 return ret;
771 }
772
773
774 /**
775 * @brief This function register usb device and initialize parameter
776 * @param priv pointer to wlan_private
777 * @return 0 or -1
778 */
779 static int if_usb_register_dev(wlan_private * priv)
780 {
781 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
782
783 lbs_deb_enter(LBS_DEB_USB);
784
785 cardp->priv = priv;
786 cardp->eth_dev = priv->dev;
787 priv->hotplug_device = &(cardp->udev->dev);
788
789 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
790 cardp->udev);
791
792 lbs_deb_leave(LBS_DEB_USB);
793 return 0;
794 }
795
796 /**
797 * @brief This function issues Boot command to the Boot2 code
798 * @param ivalue 1:Boot from FW by USB-Download
799 * 2:Boot from FW in EEPROM
800 * @return 0
801 */
802 static int if_usb_issue_boot_command(wlan_private *priv, int ivalue)
803 {
804 struct usb_card_rec *cardp = priv->card;
805 struct bootcmdstr sbootcmd;
806 int i;
807
808 /* Prepare command */
809 sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
810 sbootcmd.u8cmd_tag = ivalue;
811 for (i=0; i<11; i++)
812 sbootcmd.au8dumy[i]=0x00;
813 memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
814
815 /* Issue command */
816 usb_tx_block(priv, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
817
818 return 0;
819 }
820
821
822 static int if_usb_prog_firmware(wlan_private * priv)
823 {
824 struct usb_card_rec *cardp = priv->card;
825 int i = 0;
826 static int reset_count = 10;
827 int ret = 0;
828
829 lbs_deb_enter(LBS_DEB_USB);
830
831 cardp->rinfo.priv = priv;
832
833 restart:
834 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
835 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
836 ret = -1;
837 goto done;
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(priv, 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 priv->adapter->fw_ready = 0;
863
864 cardp->totalbytes = 0;
865 cardp->fwlastblksent = 0;
866 cardp->CRC_OK = 1;
867 cardp->fwdnldover = 0;
868 cardp->fwseqnum = -1;
869 cardp->totalbytes = 0;
870 cardp->fwfinalblk = 0;
871
872 if_prog_firmware(priv);
873
874 do {
875 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
876 i++;
877 msleep_interruptible(100);
878 if (priv->adapter->surpriseremoved || i >= 20)
879 break;
880 } while (!cardp->fwdnldover);
881
882 if (!cardp->fwdnldover) {
883 lbs_pr_info("failed to load fw, resetting device!\n");
884 if (--reset_count >= 0) {
885 if_usb_reset_device(priv);
886 goto restart;
887 }
888
889 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
890 ret = -1;
891 goto done;
892 }
893
894 if_usb_submit_rx_urb(priv);
895
896 /* Delay 200 ms to waiting for the FW ready */
897 msleep_interruptible(200);
898
899 priv->adapter->fw_ready = 1;
900
901 done:
902 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
903 return ret;
904 }
905
906 #ifdef CONFIG_PM
907 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
908 {
909 struct usb_card_rec *cardp = usb_get_intfdata(intf);
910 wlan_private *priv = cardp->priv;
911
912 lbs_deb_enter(LBS_DEB_USB);
913
914 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
915 return -1;
916
917 netif_device_detach(cardp->eth_dev);
918 netif_device_detach(priv->mesh_dev);
919
920 /* Unlink tx & rx urb */
921 usb_kill_urb(cardp->tx_urb);
922 usb_kill_urb(cardp->rx_urb);
923
924 cardp->rx_urb_recall = 1;
925
926 lbs_deb_leave(LBS_DEB_USB);
927 return 0;
928 }
929
930 static int if_usb_resume(struct usb_interface *intf)
931 {
932 struct usb_card_rec *cardp = usb_get_intfdata(intf);
933 wlan_private *priv = cardp->priv;
934
935 lbs_deb_enter(LBS_DEB_USB);
936
937 cardp->rx_urb_recall = 0;
938
939 if_usb_submit_rx_urb(cardp->priv);
940
941 netif_device_attach(cardp->eth_dev);
942 netif_device_attach(priv->mesh_dev);
943
944 lbs_deb_leave(LBS_DEB_USB);
945 return 0;
946 }
947 #else
948 #define if_usb_suspend NULL
949 #define if_usb_resume NULL
950 #endif
951
952 static struct usb_driver if_usb_driver = {
953 /* driver name */
954 .name = usbdriver_name,
955 /* probe function name */
956 .probe = if_usb_probe,
957 /* disconnect function name */
958 .disconnect = if_usb_disconnect,
959 /* device signature table */
960 .id_table = if_usb_table,
961 .suspend = if_usb_suspend,
962 .resume = if_usb_resume,
963 };
964
965 static int if_usb_init_module(void)
966 {
967 int ret = 0;
968
969 lbs_deb_enter(LBS_DEB_MAIN);
970
971 if (libertas_fw_name == NULL) {
972 libertas_fw_name = default_fw_name;
973 }
974
975 ret = usb_register(&if_usb_driver);
976
977 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
978 return ret;
979 }
980
981 static void if_usb_exit_module(void)
982 {
983 struct usb_card_rec *cardp, *cardp_temp;
984
985 lbs_deb_enter(LBS_DEB_MAIN);
986
987 list_for_each_entry_safe(cardp, cardp_temp, &usb_devices, list)
988 libertas_reset_device((wlan_private *) cardp->priv);
989
990 /* API unregisters the driver from USB subsystem */
991 usb_deregister(&if_usb_driver);
992
993 lbs_deb_leave(LBS_DEB_MAIN);
994 }
995
996 module_init(if_usb_init_module);
997 module_exit(if_usb_exit_module);
998
999 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1000 MODULE_AUTHOR("Marvell International Ltd.");
1001 MODULE_LICENSE("GPL");
AMDTP streaming driver for the Linux FireWire stack (Juju)