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[PATCH] libertas: fix RESET logic at unload time
[deliverable/linux.git] / drivers / net / wireless / libertas / 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/list.h>
9 #include <linux/usb.h>
10
11 #include "host.h"
12 #include "decl.h"
13 #include "defs.h"
14 #include "dev.h"
15 #include "if_usb.h"
16
17 #define MESSAGE_HEADER_LEN 4
18
19 static const char usbdriver_name[] = "usb8xxx";
20 static u8 *default_fw_name = "usb8388.bin";
21
22 char *libertas_fw_name = NULL;
23 module_param_named(fw_name, libertas_fw_name, charp, 0644);
24
25 /*
26 * We need to send a RESET command to all USB devices before
27 * we tear down the USB connection. Otherwise we would not
28 * be able to re-init device the device if the module gets
29 * loaded again. This is a list of all initialized USB devices,
30 * for the reset code see if_usb_reset_device()
31 */
32 static LIST_HEAD(usb_devices);
33
34 static struct usb_device_id if_usb_table[] = {
35 /* Enter the device signature inside */
36 { USB_DEVICE(0x1286, 0x2001) },
37 { USB_DEVICE(0x05a3, 0x8388) },
38 {} /* Terminating entry */
39 };
40
41 MODULE_DEVICE_TABLE(usb, if_usb_table);
42
43 static void if_usb_receive(struct urb *urb);
44 static void if_usb_receive_fwload(struct urb *urb);
45 static int if_usb_reset_device(wlan_private *priv);
46 static int if_usb_register_dev(wlan_private * priv);
47 static int if_usb_unregister_dev(wlan_private *);
48 static int if_usb_prog_firmware(wlan_private *);
49 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
50 static int if_usb_get_int_status(wlan_private * priv, u8 *);
51 static int if_usb_read_event_cause(wlan_private *);
52
53 /**
54 * @brief call back function to handle the status of the URB
55 * @param urb pointer to urb structure
56 * @return N/A
57 */
58 static void if_usb_write_bulk_callback(struct urb *urb)
59 {
60 wlan_private *priv = (wlan_private *) (urb->context);
61 wlan_adapter *adapter = priv->adapter;
62 struct net_device *dev = priv->wlan_dev.netdev;
63
64 /* handle the transmission complete validations */
65
66 if (urb->status != 0) {
67 /* print the failure status number for debug */
68 lbs_pr_info("URB in failure status\n");
69 } else {
70 /*
71 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
72 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
73 urb->actual_length);
74 */
75 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
76 /* Wake main thread if commands are pending */
77 if (!adapter->cur_cmd)
78 wake_up_interruptible(&priv->mainthread.waitq);
79 if ((adapter->connect_status == libertas_connected)) {
80 netif_wake_queue(dev);
81 netif_wake_queue(priv->mesh_dev);
82 }
83 }
84
85 return;
86 }
87
88 /**
89 * @brief free tx/rx urb, skb and rx buffer
90 * @param cardp pointer usb_card_rec
91 * @return N/A
92 */
93 void if_usb_free(struct usb_card_rec *cardp)
94 {
95 lbs_deb_enter(LBS_DEB_USB);
96
97 /* Unlink tx & rx urb */
98 usb_kill_urb(cardp->tx_urb);
99 usb_kill_urb(cardp->rx_urb);
100
101 usb_free_urb(cardp->tx_urb);
102 cardp->tx_urb = NULL;
103
104 usb_free_urb(cardp->rx_urb);
105 cardp->rx_urb = NULL;
106
107 kfree(cardp->bulk_out_buffer);
108 cardp->bulk_out_buffer = NULL;
109
110 lbs_deb_leave(LBS_DEB_USB);
111 }
112
113 /**
114 * @brief sets the configuration values
115 * @param ifnum interface number
116 * @param id pointer to usb_device_id
117 * @return 0 on success, error code on failure
118 */
119 static int if_usb_probe(struct usb_interface *intf,
120 const struct usb_device_id *id)
121 {
122 struct usb_device *udev;
123 struct usb_host_interface *iface_desc;
124 struct usb_endpoint_descriptor *endpoint;
125 wlan_private *priv;
126 struct usb_card_rec *cardp;
127 int i;
128
129 udev = interface_to_usbdev(intf);
130
131 cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
132 if (!cardp) {
133 lbs_pr_err("Out of memory allocating private data.\n");
134 goto error;
135 }
136
137 cardp->udev = udev;
138 iface_desc = intf->cur_altsetting;
139
140 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
141 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
142 udev->descriptor.bcdUSB,
143 udev->descriptor.bDeviceClass,
144 udev->descriptor.bDeviceSubClass,
145 udev->descriptor.bDeviceProtocol);
146
147 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
148 endpoint = &iface_desc->endpoint[i].desc;
149 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
150 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
151 USB_ENDPOINT_XFER_BULK)) {
152 /* we found a bulk in endpoint */
153 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
154 endpoint->wMaxPacketSize);
155 if (!
156 (cardp->rx_urb =
157 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 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 (!
180 (cardp->tx_urb =
181 usb_alloc_urb(0, GFP_KERNEL))) {
182 lbs_deb_usbd(&udev->dev,
183 "Tx URB allocation failed\n");
184 goto dealloc;
185 }
186
187 cardp->bulk_out_size =
188 endpoint->wMaxPacketSize;
189 lbs_deb_usbd(&udev->dev,
190 "Bulk out size is %d\n",
191 endpoint->wMaxPacketSize);
192 cardp->bulk_out_endpointAddr =
193 endpoint->bEndpointAddress;
194 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
195 endpoint->bEndpointAddress);
196 cardp->bulk_out_buffer =
197 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
198 GFP_KERNEL);
199
200 if (!cardp->bulk_out_buffer) {
201 lbs_deb_usbd(&udev->dev,
202 "Could not allocate buffer\n");
203 goto dealloc;
204 }
205 }
206 }
207
208
209 /* At this point libertas_add_card() will be called. Don't worry
210 * about keeping pwlanpriv around since it will be set on our
211 * usb device data in -> add() -> hw_register_dev() -> if_usb_register_dev.
212 */
213 if (!(priv = libertas_add_card(cardp)))
214 goto dealloc;
215
216 if (libertas_add_mesh(priv))
217 goto err_add_mesh;
218
219 priv->hw_register_dev = if_usb_register_dev;
220 priv->hw_unregister_dev = if_usb_unregister_dev;
221 priv->hw_prog_firmware = if_usb_prog_firmware;
222 priv->hw_host_to_card = if_usb_host_to_card;
223 priv->hw_get_int_status = if_usb_get_int_status;
224 priv->hw_read_event_cause = if_usb_read_event_cause;
225
226 if (libertas_activate_card(priv, libertas_fw_name))
227 goto err_activate_card;
228
229 list_add_tail(&cardp->list, &usb_devices);
230
231 usb_get_dev(udev);
232 usb_set_intfdata(intf, cardp);
233
234 return 0;
235
236 err_activate_card:
237 unregister_netdev(priv->mesh_dev);
238 free_netdev(priv->mesh_dev);
239 err_add_mesh:
240 free_netdev(priv->wlan_dev.netdev);
241 kfree(priv->adapter);
242 dealloc:
243 if_usb_free(cardp);
244
245 error:
246 return -ENOMEM;
247 }
248
249 /**
250 * @brief free resource and cleanup
251 * @param intf USB interface structure
252 * @return N/A
253 */
254 static void if_usb_disconnect(struct usb_interface *intf)
255 {
256 struct usb_card_rec *cardp = usb_get_intfdata(intf);
257 wlan_private *priv = (wlan_private *) cardp->priv;
258 wlan_adapter *adapter = NULL;
259
260 adapter = priv->adapter;
261
262 /*
263 * Update Surprise removed to TRUE
264 */
265 adapter->surpriseremoved = 1;
266
267 list_del(&cardp->list);
268
269 /* card is removed and we can call wlan_remove_card */
270 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
271 libertas_remove_mesh(priv);
272 libertas_remove_card(priv);
273
274 /* Unlink and free urb */
275 if_usb_free(cardp);
276
277 usb_set_intfdata(intf, NULL);
278 usb_put_dev(interface_to_usbdev(intf));
279
280 return;
281 }
282
283 /**
284 * @brief This function download FW
285 * @param priv pointer to wlan_private
286 * @return 0
287 */
288 static int if_prog_firmware(wlan_private * priv)
289 {
290 struct usb_card_rec *cardp = priv->wlan_dev.card;
291 struct FWData *fwdata;
292 struct fwheader *fwheader;
293 u8 *firmware = priv->firmware->data;
294
295 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
296
297 if (!fwdata)
298 return -1;
299
300 fwheader = &fwdata->fwheader;
301
302 if (!cardp->CRC_OK) {
303 cardp->totalbytes = cardp->fwlastblksent;
304 cardp->fwseqnum = cardp->lastseqnum - 1;
305 }
306
307 /*
308 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
309 cardp->totalbytes);
310 */
311
312 memcpy(fwheader, &firmware[cardp->totalbytes],
313 sizeof(struct fwheader));
314
315 cardp->fwlastblksent = cardp->totalbytes;
316 cardp->totalbytes += sizeof(struct fwheader);
317
318 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
319 memcpy(fwdata->data, &firmware[cardp->totalbytes],
320 fwdata->fwheader.datalength);
321
322 /*
323 lbs_deb_usbd(&cardp->udev->dev,
324 "Data length = %d\n", fwdata->fwheader.datalength);
325 */
326
327 cardp->fwseqnum = cardp->fwseqnum + 1;
328
329 fwdata->seqnum = cardp->fwseqnum;
330 cardp->lastseqnum = fwdata->seqnum;
331 cardp->totalbytes += fwdata->fwheader.datalength;
332
333 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
334 /*
335 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
336 lbs_deb_usbd(&cardp->udev->dev,
337 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
338 cardp->totalbytes);
339 */
340 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
341 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
342
343 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
344 /*
345 lbs_deb_usbd(&cardp->udev->dev,
346 "Host has finished FW downloading\n");
347 lbs_deb_usbd(&cardp->udev->dev,
348 "Donwloading FW JUMP BLOCK\n");
349 */
350 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
351 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
352 cardp->fwfinalblk = 1;
353 }
354
355 /*
356 lbs_deb_usbd(&cardp->udev->dev,
357 "The firmware download is done size is %d\n",
358 cardp->totalbytes);
359 */
360
361 kfree(fwdata);
362
363 return 0;
364 }
365
366 static int libertas_do_reset(wlan_private *priv)
367 {
368 int ret;
369 struct usb_card_rec *cardp = priv->wlan_dev.card;
370
371 lbs_deb_enter(LBS_DEB_USB);
372
373 ret = usb_reset_device(cardp->udev);
374 if (!ret) {
375 msleep(10);
376 if_usb_reset_device(priv);
377 msleep(10);
378 }
379
380 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
381
382 return ret;
383 }
384
385 /**
386 * @brief This function transfer the data to the device.
387 * @param priv pointer to wlan_private
388 * @param payload pointer to payload data
389 * @param nb data length
390 * @return 0 or -1
391 */
392 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
393 {
394 /* pointer to card structure */
395 struct usb_card_rec *cardp = priv->wlan_dev.card;
396 int ret = -1;
397
398 /* check if device is removed */
399 if (priv->adapter->surpriseremoved) {
400 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
401 goto tx_ret;
402 }
403
404 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
405 usb_sndbulkpipe(cardp->udev,
406 cardp->bulk_out_endpointAddr),
407 payload, nb, if_usb_write_bulk_callback, priv);
408
409 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
410
411 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
412 /* transfer failed */
413 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
414 ret = -1;
415 } else {
416 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
417 ret = 0;
418 }
419
420 tx_ret:
421 return ret;
422 }
423
424 static int __if_usb_submit_rx_urb(wlan_private * priv,
425 void (*callbackfn)
426 (struct urb *urb))
427 {
428 struct usb_card_rec *cardp = priv->wlan_dev.card;
429 struct sk_buff *skb;
430 struct read_cb_info *rinfo = &cardp->rinfo;
431 int ret = -1;
432
433 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
434 lbs_pr_err("No free skb\n");
435 goto rx_ret;
436 }
437
438 rinfo->skb = skb;
439
440 /* Fill the receive configuration URB and initialise the Rx call back */
441 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
442 usb_rcvbulkpipe(cardp->udev,
443 cardp->bulk_in_endpointAddr),
444 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
445 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
446 rinfo);
447
448 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
449
450 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
451 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
452 /* handle failure conditions */
453 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
454 ret = -1;
455 } else {
456 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
457 ret = 0;
458 }
459
460 rx_ret:
461 return ret;
462 }
463
464 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
465 {
466 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
467 }
468
469 static inline int if_usb_submit_rx_urb(wlan_private * priv)
470 {
471 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
472 }
473
474 static void if_usb_receive_fwload(struct urb *urb)
475 {
476 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
477 wlan_private *priv = rinfo->priv;
478 struct sk_buff *skb = rinfo->skb;
479 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
480 struct fwsyncheader *syncfwheader;
481 struct bootcmdrespStr bootcmdresp;
482
483 if (urb->status) {
484 lbs_deb_usbd(&cardp->udev->dev,
485 "URB status is failed during fw load\n");
486 kfree_skb(skb);
487 return;
488 }
489
490 if (cardp->bootcmdresp == 0) {
491 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
492 sizeof(bootcmdresp));
493 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
494 kfree_skb(skb);
495 if_usb_submit_rx_urb_fwload(priv);
496 cardp->bootcmdresp = 1;
497 lbs_deb_usbd(&cardp->udev->dev,
498 "Received valid boot command response\n");
499 return;
500 }
501 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
502 lbs_pr_info(
503 "boot cmd response wrong magic number (0x%x)\n",
504 bootcmdresp.u32magicnumber);
505 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
506 lbs_pr_info(
507 "boot cmd response cmd_tag error (%d)\n",
508 bootcmdresp.u8cmd_tag);
509 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
510 lbs_pr_info(
511 "boot cmd response result error (%d)\n",
512 bootcmdresp.u8result);
513 } else {
514 cardp->bootcmdresp = 1;
515 lbs_deb_usbd(&cardp->udev->dev,
516 "Received valid boot command response\n");
517 }
518 kfree_skb(skb);
519 if_usb_submit_rx_urb_fwload(priv);
520 return;
521 }
522
523 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
524 if (!syncfwheader) {
525 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
526 kfree_skb(skb);
527 return;
528 }
529
530 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
531 sizeof(struct fwsyncheader));
532
533 if (!syncfwheader->cmd) {
534 /*
535 lbs_deb_usbd(&cardp->udev->dev,
536 "FW received Blk with correct CRC\n");
537 lbs_deb_usbd(&cardp->udev->dev,
538 "FW received Blk seqnum = %d\n",
539 syncfwheader->seqnum);
540 */
541 cardp->CRC_OK = 1;
542 } else {
543 lbs_deb_usbd(&cardp->udev->dev,
544 "FW received Blk with CRC error\n");
545 cardp->CRC_OK = 0;
546 }
547
548 kfree_skb(skb);
549
550 if (cardp->fwfinalblk) {
551 cardp->fwdnldover = 1;
552 goto exit;
553 }
554
555 if_prog_firmware(priv);
556
557 if_usb_submit_rx_urb_fwload(priv);
558 exit:
559 kfree(syncfwheader);
560
561 return;
562
563 }
564
565 #define MRVDRV_MIN_PKT_LEN 30
566
567 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
568 struct usb_card_rec *cardp,
569 wlan_private *priv)
570 {
571 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
572 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
573 lbs_deb_usbd(&cardp->udev->dev,
574 "Packet length is Invalid\n");
575 kfree_skb(skb);
576 return;
577 }
578
579 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
580 skb_put(skb, recvlength);
581 skb_pull(skb, MESSAGE_HEADER_LEN);
582 libertas_process_rxed_packet(priv, skb);
583 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
584 }
585
586 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
587 struct sk_buff *skb,
588 struct usb_card_rec *cardp,
589 wlan_private *priv)
590 {
591 u8 *cmdbuf;
592 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
593 lbs_deb_usbd(&cardp->udev->dev,
594 "The receive buffer is too large\n");
595 kfree_skb(skb);
596 return;
597 }
598
599 if (!in_interrupt())
600 BUG();
601
602 spin_lock(&priv->adapter->driver_lock);
603 /* take care of cur_cmd = NULL case by reading the
604 * data to clear the interrupt */
605 if (!priv->adapter->cur_cmd) {
606 cmdbuf = priv->wlan_dev.upld_buf;
607 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
608 } else
609 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
610
611 cardp->usb_int_cause |= his_cmdupldrdy;
612 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
613 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
614 priv->wlan_dev.upld_len);
615
616 kfree_skb(skb);
617 libertas_interrupt(priv->wlan_dev.netdev);
618 spin_unlock(&priv->adapter->driver_lock);
619
620 lbs_deb_usbd(&cardp->udev->dev,
621 "Wake up main thread to handle cmd response\n");
622
623 return;
624 }
625
626 /**
627 * @brief This function reads of the packet into the upload buff,
628 * wake up the main thread and initialise the Rx callack.
629 *
630 * @param urb pointer to struct urb
631 * @return N/A
632 */
633 static void if_usb_receive(struct urb *urb)
634 {
635 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
636 wlan_private *priv = rinfo->priv;
637 struct sk_buff *skb = rinfo->skb;
638 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
639
640 int recvlength = urb->actual_length;
641 u8 *recvbuff = NULL;
642 u32 recvtype;
643
644 lbs_deb_enter(LBS_DEB_USB);
645
646 if (recvlength) {
647 if (urb->status) {
648 lbs_deb_usbd(&cardp->udev->dev,
649 "URB status is failed\n");
650 kfree_skb(skb);
651 goto setup_for_next;
652 }
653
654 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
655 memcpy(&recvtype, recvbuff, sizeof(u32));
656 lbs_deb_usbd(&cardp->udev->dev,
657 "Recv length = 0x%x\n", recvlength);
658 lbs_deb_usbd(&cardp->udev->dev,
659 "Receive type = 0x%X\n", recvtype);
660 recvtype = le32_to_cpu(recvtype);
661 lbs_deb_usbd(&cardp->udev->dev,
662 "Receive type after = 0x%X\n", recvtype);
663 } else if (urb->status)
664 goto rx_exit;
665
666
667 switch (recvtype) {
668 case CMD_TYPE_DATA:
669 process_cmdtypedata(recvlength, skb, cardp, priv);
670 break;
671
672 case CMD_TYPE_REQUEST:
673 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
674 break;
675
676 case CMD_TYPE_INDICATION:
677 /* Event cause handling */
678 spin_lock(&priv->adapter->driver_lock);
679 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
680 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
681 cardp->usb_event_cause);
682 if (cardp->usb_event_cause & 0xffff0000) {
683 libertas_send_tx_feedback(priv);
684 spin_unlock(&priv->adapter->driver_lock);
685 break;
686 }
687 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
688 cardp->usb_int_cause |= his_cardevent;
689 kfree_skb(skb);
690 libertas_interrupt(priv->wlan_dev.netdev);
691 spin_unlock(&priv->adapter->driver_lock);
692 goto rx_exit;
693 default:
694 kfree_skb(skb);
695 break;
696 }
697
698 setup_for_next:
699 if_usb_submit_rx_urb(priv);
700 rx_exit:
701 lbs_deb_leave(LBS_DEB_USB);
702 }
703
704 /**
705 * @brief This function downloads data to FW
706 * @param priv pointer to wlan_private structure
707 * @param type type of data
708 * @param buf pointer to data buffer
709 * @param len number of bytes
710 * @return 0 or -1
711 */
712 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
713 {
714 int ret = -1;
715 u32 tmp;
716 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
717
718 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
719 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
720
721 if (type == MVMS_CMD) {
722 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
723 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
724 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
725 MESSAGE_HEADER_LEN);
726
727 } else {
728 tmp = cpu_to_le32(CMD_TYPE_DATA);
729 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
730 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
731 MESSAGE_HEADER_LEN);
732 }
733
734 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
735
736 ret =
737 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
738
739 return ret;
740 }
741
742 /* called with adapter->driver_lock held */
743 static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
744 {
745 struct usb_card_rec *cardp = priv->wlan_dev.card;
746
747 *ireg = cardp->usb_int_cause;
748 cardp->usb_int_cause = 0;
749
750 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
751
752 return 0;
753 }
754
755 static int if_usb_read_event_cause(wlan_private * priv)
756 {
757 struct usb_card_rec *cardp = priv->wlan_dev.card;
758 priv->adapter->eventcause = cardp->usb_event_cause;
759 /* Re-submit rx urb here to avoid event lost issue */
760 if_usb_submit_rx_urb(priv);
761 return 0;
762 }
763
764 static int if_usb_reset_device(wlan_private *priv)
765 {
766 int ret;
767
768 lbs_deb_enter(LBS_DEB_USB);
769 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
770 cmd_act_halt, 0, 0, NULL);
771 msleep_interruptible(10);
772
773 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
774 return ret;
775 }
776
777 static int if_usb_unregister_dev(wlan_private * priv)
778 {
779 int ret = 0;
780
781 /* Need to send a Reset command to device before USB resources freed
782 * and wlan_remove_card() called, then device can handle FW download
783 * again.
784 */
785 if (priv)
786 if_usb_reset_device(priv);
787
788 return ret;
789 }
790
791
792 /**
793 * @brief This function register usb device and initialize parameter
794 * @param priv pointer to wlan_private
795 * @return 0 or -1
796 */
797 static int if_usb_register_dev(wlan_private * priv)
798 {
799 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
800
801 lbs_deb_enter(LBS_DEB_USB);
802
803 cardp->priv = priv;
804 cardp->eth_dev = priv->wlan_dev.netdev;
805 priv->hotplug_device = &(cardp->udev->dev);
806
807 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
808 SET_NETDEV_DEV(priv->mesh_dev, &(cardp->udev->dev));
809
810 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
811 cardp->udev);
812
813 lbs_deb_leave(LBS_DEB_USB);
814 return 0;
815 }
816
817
818
819 static int if_usb_prog_firmware(wlan_private * priv)
820 {
821 struct usb_card_rec *cardp = priv->wlan_dev.card;
822 int i = 0;
823 static int reset_count = 10;
824 int ret = 0;
825
826 lbs_deb_enter(LBS_DEB_USB);
827
828 cardp->rinfo.priv = priv;
829
830 restart:
831 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
832 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
833 ret = -1;
834 goto done;
835 }
836
837 cardp->bootcmdresp = 0;
838 do {
839 int j = 0;
840 i++;
841 /* Issue Boot command = 1, Boot from Download-FW */
842 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
843 /* wait for command response */
844 do {
845 j++;
846 msleep_interruptible(100);
847 } while (cardp->bootcmdresp == 0 && j < 10);
848 } while (cardp->bootcmdresp == 0 && i < 5);
849
850 if (cardp->bootcmdresp == 0) {
851 if (--reset_count >= 0) {
852 libertas_do_reset(priv);
853 goto restart;
854 }
855 return -1;
856 }
857
858 i = 0;
859 priv->adapter->fw_ready = 0;
860
861 cardp->totalbytes = 0;
862 cardp->fwlastblksent = 0;
863 cardp->CRC_OK = 1;
864 cardp->fwdnldover = 0;
865 cardp->fwseqnum = -1;
866 cardp->totalbytes = 0;
867 cardp->fwfinalblk = 0;
868
869 if_prog_firmware(priv);
870
871 do {
872 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
873 i++;
874 msleep_interruptible(100);
875 if (priv->adapter->surpriseremoved || i >= 20)
876 break;
877 } while (!cardp->fwdnldover);
878
879 if (!cardp->fwdnldover) {
880 lbs_pr_info("failed to load fw, resetting device!\n");
881 if (--reset_count >= 0) {
882 libertas_do_reset(priv);
883 goto restart;
884 }
885
886 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
887 ret = -1;
888 goto done;
889 }
890
891 if_usb_submit_rx_urb(priv);
892
893 /* Delay 200 ms to waiting for the FW ready */
894 msleep_interruptible(200);
895
896 priv->adapter->fw_ready = 1;
897
898 done:
899 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
900 return ret;
901 }
902
903 #ifdef CONFIG_PM
904 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
905 {
906 struct usb_card_rec *cardp = usb_get_intfdata(intf);
907 wlan_private *priv = cardp->priv;
908
909 lbs_deb_enter(LBS_DEB_USB);
910
911 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
912 return -1;
913
914 netif_device_detach(cardp->eth_dev);
915 netif_device_detach(priv->mesh_dev);
916
917 /* Unlink tx & rx urb */
918 usb_kill_urb(cardp->tx_urb);
919 usb_kill_urb(cardp->rx_urb);
920
921 cardp->rx_urb_recall = 1;
922
923 lbs_deb_leave(LBS_DEB_USB);
924 return 0;
925 }
926
927 static int if_usb_resume(struct usb_interface *intf)
928 {
929 struct usb_card_rec *cardp = usb_get_intfdata(intf);
930 wlan_private *priv = cardp->priv;
931
932 lbs_deb_enter(LBS_DEB_USB);
933
934 cardp->rx_urb_recall = 0;
935
936 if_usb_submit_rx_urb(cardp->priv);
937
938 netif_device_attach(cardp->eth_dev);
939 netif_device_attach(priv->mesh_dev);
940
941 lbs_deb_leave(LBS_DEB_USB);
942 return 0;
943 }
944 #else
945 #define if_usb_suspend NULL
946 #define if_usb_resume NULL
947 #endif
948
949 static struct usb_driver if_usb_driver = {
950 /* driver name */
951 .name = usbdriver_name,
952 /* probe function name */
953 .probe = if_usb_probe,
954 /* disconnect function name */
955 .disconnect = if_usb_disconnect,
956 /* device signature table */
957 .id_table = if_usb_table,
958 .suspend = if_usb_suspend,
959 .resume = if_usb_resume,
960 };
961
962 static int if_usb_init_module(void)
963 {
964 int ret = 0;
965
966 lbs_deb_enter(LBS_DEB_MAIN);
967
968 if (libertas_fw_name == NULL) {
969 libertas_fw_name = default_fw_name;
970 }
971
972 ret = usb_register(&if_usb_driver);
973
974 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
975 return ret;
976 }
977
978 static void if_usb_exit_module(void)
979 {
980 struct list_head *ptr;
981 struct usb_card_rec *cardp;
982
983 lbs_deb_enter(LBS_DEB_MAIN);
984
985 list_for_each(ptr, &usb_devices) {
986 cardp = list_entry(ptr, struct usb_card_rec, list);
987 if_usb_reset_device((wlan_private *) cardp->priv);
988 }
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");
Linux kernel - Deliverables
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