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[PATCH] libertas: split module into two (libertas.ko and usb8xxx.ko)
[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/usb.h>
9
10 #include "host.h"
11 #include "decl.h"
12 #include "defs.h"
13 #include "dev.h"
14 #include "if_usb.h"
15
16 #define MESSAGE_HEADER_LEN 4
17
18 static const char usbdriver_name[] = "usb8xxx";
19 static u8 *default_fw_name = "usb8388.bin";
20
21 char *libertas_fw_name = NULL;
22 module_param_named(fw_name, libertas_fw_name, charp, 0644);
23
24
25 #define MAX_DEVS 5
26 static struct net_device *libertas_devs[MAX_DEVS];
27 static int libertas_found = 0;
28
29 static struct usb_device_id if_usb_table[] = {
30 /* Enter the device signature inside */
31 { USB_DEVICE(0x1286, 0x2001) },
32 { USB_DEVICE(0x05a3, 0x8388) },
33 {} /* Terminating entry */
34 };
35
36 MODULE_DEVICE_TABLE(usb, if_usb_table);
37
38 static void if_usb_receive(struct urb *urb);
39 static void if_usb_receive_fwload(struct urb *urb);
40 static int reset_device(wlan_private *priv);
41 static int if_usb_register_dev(wlan_private * priv);
42 static int if_usb_unregister_dev(wlan_private *);
43 static int if_usb_prog_firmware(wlan_private *);
44 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
45 static int if_usb_get_int_status(wlan_private * priv, u8 *);
46 static int if_usb_read_event_cause(wlan_private *);
47
48 /**
49 * @brief call back function to handle the status of the URB
50 * @param urb pointer to urb structure
51 * @return N/A
52 */
53 static void if_usb_write_bulk_callback(struct urb *urb)
54 {
55 wlan_private *priv = (wlan_private *) (urb->context);
56 wlan_adapter *adapter = priv->adapter;
57 struct net_device *dev = priv->wlan_dev.netdev;
58
59 /* handle the transmission complete validations */
60
61 if (urb->status != 0) {
62 /* print the failure status number for debug */
63 lbs_pr_info("URB in failure status\n");
64 } else {
65 /*
66 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
67 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
68 urb->actual_length);
69 */
70 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
71 /* Wake main thread if commands are pending */
72 if (!adapter->cur_cmd)
73 wake_up_interruptible(&priv->mainthread.waitq);
74 if ((adapter->connect_status == libertas_connected)) {
75 netif_wake_queue(dev);
76 netif_wake_queue(priv->mesh_dev);
77 }
78 }
79
80 return;
81 }
82
83 /**
84 * @brief free tx/rx urb, skb and rx buffer
85 * @param cardp pointer usb_card_rec
86 * @return N/A
87 */
88 void if_usb_free(struct usb_card_rec *cardp)
89 {
90 lbs_deb_enter(LBS_DEB_USB);
91
92 /* Unlink tx & rx urb */
93 usb_kill_urb(cardp->tx_urb);
94 usb_kill_urb(cardp->rx_urb);
95
96 usb_free_urb(cardp->tx_urb);
97 cardp->tx_urb = NULL;
98
99 usb_free_urb(cardp->rx_urb);
100 cardp->rx_urb = NULL;
101
102 kfree(cardp->bulk_out_buffer);
103 cardp->bulk_out_buffer = NULL;
104
105 lbs_deb_leave(LBS_DEB_USB);
106 }
107
108 /**
109 * @brief sets the configuration values
110 * @param ifnum interface number
111 * @param id pointer to usb_device_id
112 * @return 0 on success, error code on failure
113 */
114 static int if_usb_probe(struct usb_interface *intf,
115 const struct usb_device_id *id)
116 {
117 struct usb_device *udev;
118 struct usb_host_interface *iface_desc;
119 struct usb_endpoint_descriptor *endpoint;
120 wlan_private *priv;
121 struct usb_card_rec *usb_cardp;
122 int i;
123
124 udev = interface_to_usbdev(intf);
125
126 usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
127 if (!usb_cardp) {
128 lbs_pr_err("Out of memory allocating private data.\n");
129 goto error;
130 }
131
132 usb_cardp->udev = udev;
133 iface_desc = intf->cur_altsetting;
134
135 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
136 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
137 udev->descriptor.bcdUSB,
138 udev->descriptor.bDeviceClass,
139 udev->descriptor.bDeviceSubClass,
140 udev->descriptor.bDeviceProtocol);
141
142 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
143 endpoint = &iface_desc->endpoint[i].desc;
144 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
145 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
146 USB_ENDPOINT_XFER_BULK)) {
147 /* we found a bulk in endpoint */
148 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
149 endpoint->wMaxPacketSize);
150 if (!
151 (usb_cardp->rx_urb =
152 usb_alloc_urb(0, GFP_KERNEL))) {
153 lbs_deb_usbd(&udev->dev,
154 "Rx URB allocation failed\n");
155 goto dealloc;
156 }
157 usb_cardp->rx_urb_recall = 0;
158
159 usb_cardp->bulk_in_size =
160 endpoint->wMaxPacketSize;
161 usb_cardp->bulk_in_endpointAddr =
162 (endpoint->
163 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
164 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
165 endpoint->bEndpointAddress);
166 }
167
168 if (((endpoint->
169 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
170 USB_DIR_OUT)
171 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
172 USB_ENDPOINT_XFER_BULK)) {
173 /* We found bulk out endpoint */
174 if (!
175 (usb_cardp->tx_urb =
176 usb_alloc_urb(0, GFP_KERNEL))) {
177 lbs_deb_usbd(&udev->dev,
178 "Tx URB allocation failed\n");
179 goto dealloc;
180 }
181
182 usb_cardp->bulk_out_size =
183 endpoint->wMaxPacketSize;
184 lbs_deb_usbd(&udev->dev,
185 "Bulk out size is %d\n",
186 endpoint->wMaxPacketSize);
187 usb_cardp->bulk_out_endpointAddr =
188 endpoint->bEndpointAddress;
189 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
190 endpoint->bEndpointAddress);
191 usb_cardp->bulk_out_buffer =
192 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
193 GFP_KERNEL);
194
195 if (!usb_cardp->bulk_out_buffer) {
196 lbs_deb_usbd(&udev->dev,
197 "Could not allocate buffer\n");
198 goto dealloc;
199 }
200 }
201 }
202
203
204 /* At this point libertas_add_card() will be called. Don't worry
205 * about keeping pwlanpriv around since it will be set on our
206 * usb device data in -> add() -> hw_register_dev() -> if_usb_register_dev.
207 */
208 if (!(priv = libertas_add_card(usb_cardp)))
209 goto dealloc;
210
211 if (libertas_add_mesh(priv))
212 goto err_add_mesh;
213
214 priv->hw_register_dev = if_usb_register_dev;
215 priv->hw_unregister_dev = if_usb_unregister_dev;
216 priv->hw_prog_firmware = if_usb_prog_firmware;
217 priv->hw_host_to_card = if_usb_host_to_card;
218 priv->hw_get_int_status = if_usb_get_int_status;
219 priv->hw_read_event_cause = if_usb_read_event_cause;
220
221 if (libertas_activate_card(priv, libertas_fw_name))
222 goto err_activate_card;
223
224 if (libertas_found < MAX_DEVS) {
225 libertas_devs[libertas_found] = priv->wlan_dev.netdev;
226 libertas_found++;
227 }
228
229 usb_get_dev(udev);
230 usb_set_intfdata(intf, usb_cardp);
231
232 /*
233 * return card structure, which can be got back in the
234 * diconnect function as the ptr
235 * argument.
236 */
237 return 0;
238
239 err_activate_card:
240 unregister_netdev(priv->mesh_dev);
241 free_netdev(priv->mesh_dev);
242 err_add_mesh:
243 free_netdev(priv->wlan_dev.netdev);
244 kfree(priv->adapter);
245 dealloc:
246 if_usb_free(usb_cardp);
247
248 error:
249 return -ENOMEM;
250 }
251
252 /**
253 * @brief free resource and cleanup
254 * @param udev pointer to usb_device
255 * @param ptr pointer to usb_cardp
256 * @return N/A
257 */
258 static void if_usb_disconnect(struct usb_interface *intf)
259 {
260 struct usb_card_rec *cardp = usb_get_intfdata(intf);
261 wlan_private *priv = (wlan_private *) cardp->priv;
262 wlan_adapter *adapter = NULL;
263 int i;
264
265 adapter = priv->adapter;
266
267 /*
268 * Update Surprise removed to TRUE
269 */
270 adapter->surpriseremoved = 1;
271
272 for (i = 0; i<libertas_found; i++) {
273 if (libertas_devs[i]==priv->wlan_dev.netdev) {
274 libertas_devs[i] = libertas_devs[--libertas_found];
275 libertas_devs[libertas_found] = NULL ;
276 break;
277 }
278 }
279
280 /* card is removed and we can call wlan_remove_card */
281 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
282 libertas_remove_mesh(priv);
283 libertas_remove_card(priv);
284
285 /* Unlink and free urb */
286 if_usb_free(cardp);
287
288 usb_set_intfdata(intf, NULL);
289 usb_put_dev(interface_to_usbdev(intf));
290
291 return;
292 }
293
294 /**
295 * @brief This function download FW
296 * @param priv pointer to wlan_private
297 * @return 0
298 */
299 static int if_prog_firmware(wlan_private * priv)
300 {
301 struct usb_card_rec *cardp = priv->wlan_dev.card;
302 struct FWData *fwdata;
303 struct fwheader *fwheader;
304 u8 *firmware = priv->firmware->data;
305
306 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
307
308 if (!fwdata)
309 return -1;
310
311 fwheader = &fwdata->fwheader;
312
313 if (!cardp->CRC_OK) {
314 cardp->totalbytes = cardp->fwlastblksent;
315 cardp->fwseqnum = cardp->lastseqnum - 1;
316 }
317
318 /*
319 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
320 cardp->totalbytes);
321 */
322
323 memcpy(fwheader, &firmware[cardp->totalbytes],
324 sizeof(struct fwheader));
325
326 cardp->fwlastblksent = cardp->totalbytes;
327 cardp->totalbytes += sizeof(struct fwheader);
328
329 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
330 memcpy(fwdata->data, &firmware[cardp->totalbytes],
331 fwdata->fwheader.datalength);
332
333 /*
334 lbs_deb_usbd(&cardp->udev->dev,
335 "Data length = %d\n", fwdata->fwheader.datalength);
336 */
337
338 cardp->fwseqnum = cardp->fwseqnum + 1;
339
340 fwdata->seqnum = cardp->fwseqnum;
341 cardp->lastseqnum = fwdata->seqnum;
342 cardp->totalbytes += fwdata->fwheader.datalength;
343
344 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
345 /*
346 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
347 lbs_deb_usbd(&cardp->udev->dev,
348 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
349 cardp->totalbytes);
350 */
351 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
352 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
353
354 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
355 /*
356 lbs_deb_usbd(&cardp->udev->dev,
357 "Host has finished FW downloading\n");
358 lbs_deb_usbd(&cardp->udev->dev,
359 "Donwloading FW JUMP BLOCK\n");
360 */
361 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
362 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
363 cardp->fwfinalblk = 1;
364 }
365
366 /*
367 lbs_deb_usbd(&cardp->udev->dev,
368 "The firmware download is done size is %d\n",
369 cardp->totalbytes);
370 */
371
372 kfree(fwdata);
373
374 return 0;
375 }
376
377 static int libertas_do_reset(wlan_private *priv)
378 {
379 int ret;
380 struct usb_card_rec *cardp = priv->wlan_dev.card;
381
382 lbs_deb_enter(LBS_DEB_USB);
383
384 ret = usb_reset_device(cardp->udev);
385 if (!ret) {
386 msleep(10);
387 reset_device(priv);
388 msleep(10);
389 }
390
391 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
392
393 return ret;
394 }
395
396 /**
397 * @brief This function transfer the data to the device.
398 * @param priv pointer to wlan_private
399 * @param payload pointer to payload data
400 * @param nb data length
401 * @return 0 or -1
402 */
403 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
404 {
405 /* pointer to card structure */
406 struct usb_card_rec *cardp = priv->wlan_dev.card;
407 int ret = -1;
408
409 /* check if device is removed */
410 if (priv->adapter->surpriseremoved) {
411 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
412 goto tx_ret;
413 }
414
415 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
416 usb_sndbulkpipe(cardp->udev,
417 cardp->bulk_out_endpointAddr),
418 payload, nb, if_usb_write_bulk_callback, priv);
419
420 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
421
422 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
423 /* transfer failed */
424 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
425 ret = -1;
426 } else {
427 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
428 ret = 0;
429 }
430
431 tx_ret:
432 return ret;
433 }
434
435 static int __if_usb_submit_rx_urb(wlan_private * priv,
436 void (*callbackfn)
437 (struct urb *urb))
438 {
439 struct usb_card_rec *cardp = priv->wlan_dev.card;
440 struct sk_buff *skb;
441 struct read_cb_info *rinfo = &cardp->rinfo;
442 int ret = -1;
443
444 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
445 lbs_pr_err("No free skb\n");
446 goto rx_ret;
447 }
448
449 rinfo->skb = skb;
450
451 /* Fill the receive configuration URB and initialise the Rx call back */
452 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
453 usb_rcvbulkpipe(cardp->udev,
454 cardp->bulk_in_endpointAddr),
455 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
456 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
457 rinfo);
458
459 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
460
461 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
462 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
463 /* handle failure conditions */
464 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
465 ret = -1;
466 } else {
467 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
468 ret = 0;
469 }
470
471 rx_ret:
472 return ret;
473 }
474
475 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
476 {
477 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
478 }
479
480 static inline int if_usb_submit_rx_urb(wlan_private * priv)
481 {
482 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
483 }
484
485 static void if_usb_receive_fwload(struct urb *urb)
486 {
487 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
488 wlan_private *priv = rinfo->priv;
489 struct sk_buff *skb = rinfo->skb;
490 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
491 struct fwsyncheader *syncfwheader;
492 struct bootcmdrespStr bootcmdresp;
493
494 if (urb->status) {
495 lbs_deb_usbd(&cardp->udev->dev,
496 "URB status is failed during fw load\n");
497 kfree_skb(skb);
498 return;
499 }
500
501 if (cardp->bootcmdresp == 0) {
502 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
503 sizeof(bootcmdresp));
504 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
505 kfree_skb(skb);
506 if_usb_submit_rx_urb_fwload(priv);
507 cardp->bootcmdresp = 1;
508 lbs_deb_usbd(&cardp->udev->dev,
509 "Received valid boot command response\n");
510 return;
511 }
512 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
513 lbs_pr_info(
514 "boot cmd response wrong magic number (0x%x)\n",
515 bootcmdresp.u32magicnumber);
516 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
517 lbs_pr_info(
518 "boot cmd response cmd_tag error (%d)\n",
519 bootcmdresp.u8cmd_tag);
520 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
521 lbs_pr_info(
522 "boot cmd response result error (%d)\n",
523 bootcmdresp.u8result);
524 } else {
525 cardp->bootcmdresp = 1;
526 lbs_deb_usbd(&cardp->udev->dev,
527 "Received valid boot command response\n");
528 }
529 kfree_skb(skb);
530 if_usb_submit_rx_urb_fwload(priv);
531 return;
532 }
533
534 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
535 if (!syncfwheader) {
536 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
537 kfree_skb(skb);
538 return;
539 }
540
541 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
542 sizeof(struct fwsyncheader));
543
544 if (!syncfwheader->cmd) {
545 /*
546 lbs_deb_usbd(&cardp->udev->dev,
547 "FW received Blk with correct CRC\n");
548 lbs_deb_usbd(&cardp->udev->dev,
549 "FW received Blk seqnum = %d\n",
550 syncfwheader->seqnum);
551 */
552 cardp->CRC_OK = 1;
553 } else {
554 lbs_deb_usbd(&cardp->udev->dev,
555 "FW received Blk with CRC error\n");
556 cardp->CRC_OK = 0;
557 }
558
559 kfree_skb(skb);
560
561 if (cardp->fwfinalblk) {
562 cardp->fwdnldover = 1;
563 goto exit;
564 }
565
566 if_prog_firmware(priv);
567
568 if_usb_submit_rx_urb_fwload(priv);
569 exit:
570 kfree(syncfwheader);
571
572 return;
573
574 }
575
576 #define MRVDRV_MIN_PKT_LEN 30
577
578 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
579 struct usb_card_rec *cardp,
580 wlan_private *priv)
581 {
582 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
583 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
584 lbs_deb_usbd(&cardp->udev->dev,
585 "Packet length is Invalid\n");
586 kfree_skb(skb);
587 return;
588 }
589
590 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
591 skb_put(skb, recvlength);
592 skb_pull(skb, MESSAGE_HEADER_LEN);
593 libertas_process_rxed_packet(priv, skb);
594 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
595 }
596
597 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
598 struct sk_buff *skb,
599 struct usb_card_rec *cardp,
600 wlan_private *priv)
601 {
602 u8 *cmdbuf;
603 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
604 lbs_deb_usbd(&cardp->udev->dev,
605 "The receive buffer is too large\n");
606 kfree_skb(skb);
607 return;
608 }
609
610 if (!in_interrupt())
611 BUG();
612
613 spin_lock(&priv->adapter->driver_lock);
614 /* take care of cur_cmd = NULL case by reading the
615 * data to clear the interrupt */
616 if (!priv->adapter->cur_cmd) {
617 cmdbuf = priv->wlan_dev.upld_buf;
618 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
619 } else
620 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
621
622 cardp->usb_int_cause |= his_cmdupldrdy;
623 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
624 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
625 priv->wlan_dev.upld_len);
626
627 kfree_skb(skb);
628 libertas_interrupt(priv->wlan_dev.netdev);
629 spin_unlock(&priv->adapter->driver_lock);
630
631 lbs_deb_usbd(&cardp->udev->dev,
632 "Wake up main thread to handle cmd response\n");
633
634 return;
635 }
636
637 /**
638 * @brief This function reads of the packet into the upload buff,
639 * wake up the main thread and initialise the Rx callack.
640 *
641 * @param urb pointer to struct urb
642 * @return N/A
643 */
644 static void if_usb_receive(struct urb *urb)
645 {
646 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
647 wlan_private *priv = rinfo->priv;
648 struct sk_buff *skb = rinfo->skb;
649 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
650
651 int recvlength = urb->actual_length;
652 u8 *recvbuff = NULL;
653 u32 recvtype;
654
655 lbs_deb_enter(LBS_DEB_USB);
656
657 if (recvlength) {
658 if (urb->status) {
659 lbs_deb_usbd(&cardp->udev->dev,
660 "URB status is failed\n");
661 kfree_skb(skb);
662 goto setup_for_next;
663 }
664
665 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
666 memcpy(&recvtype, recvbuff, sizeof(u32));
667 lbs_deb_usbd(&cardp->udev->dev,
668 "Recv length = 0x%x\n", recvlength);
669 lbs_deb_usbd(&cardp->udev->dev,
670 "Receive type = 0x%X\n", recvtype);
671 recvtype = le32_to_cpu(recvtype);
672 lbs_deb_usbd(&cardp->udev->dev,
673 "Receive type after = 0x%X\n", recvtype);
674 } else if (urb->status)
675 goto rx_exit;
676
677
678 switch (recvtype) {
679 case CMD_TYPE_DATA:
680 process_cmdtypedata(recvlength, skb, cardp, priv);
681 break;
682
683 case CMD_TYPE_REQUEST:
684 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
685 break;
686
687 case CMD_TYPE_INDICATION:
688 /* Event cause handling */
689 spin_lock(&priv->adapter->driver_lock);
690 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
691 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
692 cardp->usb_event_cause);
693 if (cardp->usb_event_cause & 0xffff0000) {
694 libertas_send_tx_feedback(priv);
695 spin_unlock(&priv->adapter->driver_lock);
696 break;
697 }
698 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
699 cardp->usb_int_cause |= his_cardevent;
700 kfree_skb(skb);
701 libertas_interrupt(priv->wlan_dev.netdev);
702 spin_unlock(&priv->adapter->driver_lock);
703 goto rx_exit;
704 default:
705 kfree_skb(skb);
706 break;
707 }
708
709 setup_for_next:
710 if_usb_submit_rx_urb(priv);
711 rx_exit:
712 lbs_deb_leave(LBS_DEB_USB);
713 }
714
715 /**
716 * @brief This function downloads data to FW
717 * @param priv pointer to wlan_private structure
718 * @param type type of data
719 * @param buf pointer to data buffer
720 * @param len number of bytes
721 * @return 0 or -1
722 */
723 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
724 {
725 int ret = -1;
726 u32 tmp;
727 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
728
729 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
730 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
731
732 if (type == MVMS_CMD) {
733 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
734 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
735 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
736 MESSAGE_HEADER_LEN);
737
738 } else {
739 tmp = cpu_to_le32(CMD_TYPE_DATA);
740 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
741 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
742 MESSAGE_HEADER_LEN);
743 }
744
745 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
746
747 ret =
748 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
749
750 return ret;
751 }
752
753 /* called with adapter->driver_lock held */
754 static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
755 {
756 struct usb_card_rec *cardp = priv->wlan_dev.card;
757
758 *ireg = cardp->usb_int_cause;
759 cardp->usb_int_cause = 0;
760
761 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
762
763 return 0;
764 }
765
766 static int if_usb_read_event_cause(wlan_private * priv)
767 {
768 struct usb_card_rec *cardp = priv->wlan_dev.card;
769 priv->adapter->eventcause = cardp->usb_event_cause;
770 /* Re-submit rx urb here to avoid event lost issue */
771 if_usb_submit_rx_urb(priv);
772 return 0;
773 }
774
775 static int reset_device(wlan_private *priv)
776 {
777 int ret;
778
779 lbs_deb_enter(LBS_DEB_USB);
780 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
781 cmd_act_halt, 0, 0, NULL);
782 msleep_interruptible(10);
783
784 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
785 return ret;
786 }
787
788 static int if_usb_unregister_dev(wlan_private * priv)
789 {
790 int ret = 0;
791
792 /* Need to send a Reset command to device before USB resources freed
793 * and wlan_remove_card() called, then device can handle FW download
794 * again.
795 */
796 if (priv)
797 reset_device(priv);
798
799 return ret;
800 }
801
802
803 /**
804 * @brief This function register usb device and initialize parameter
805 * @param priv pointer to wlan_private
806 * @return 0 or -1
807 */
808 static int if_usb_register_dev(wlan_private * priv)
809 {
810 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
811
812 lbs_deb_enter(LBS_DEB_USB);
813
814 cardp->priv = priv;
815 cardp->eth_dev = priv->wlan_dev.netdev;
816 priv->hotplug_device = &(cardp->udev->dev);
817
818 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
819 SET_NETDEV_DEV(priv->mesh_dev, &(cardp->udev->dev));
820
821 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
822 cardp->udev);
823
824 lbs_deb_leave(LBS_DEB_USB);
825 return 0;
826 }
827
828
829
830 static int if_usb_prog_firmware(wlan_private * priv)
831 {
832 struct usb_card_rec *cardp = priv->wlan_dev.card;
833 int i = 0;
834 static int reset_count = 10;
835 int ret = 0;
836
837 lbs_deb_enter(LBS_DEB_USB);
838
839 cardp->rinfo.priv = priv;
840
841 restart:
842 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
843 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
844 ret = -1;
845 goto done;
846 }
847
848 cardp->bootcmdresp = 0;
849 do {
850 int j = 0;
851 i++;
852 /* Issue Boot command = 1, Boot from Download-FW */
853 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
854 /* wait for command response */
855 do {
856 j++;
857 msleep_interruptible(100);
858 } while (cardp->bootcmdresp == 0 && j < 10);
859 } while (cardp->bootcmdresp == 0 && i < 5);
860
861 if (cardp->bootcmdresp == 0) {
862 if (--reset_count >= 0) {
863 libertas_do_reset(priv);
864 goto restart;
865 }
866 return -1;
867 }
868
869 i = 0;
870 priv->adapter->fw_ready = 0;
871
872 cardp->totalbytes = 0;
873 cardp->fwlastblksent = 0;
874 cardp->CRC_OK = 1;
875 cardp->fwdnldover = 0;
876 cardp->fwseqnum = -1;
877 cardp->totalbytes = 0;
878 cardp->fwfinalblk = 0;
879
880 if_prog_firmware(priv);
881
882 do {
883 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
884 i++;
885 msleep_interruptible(100);
886 if (priv->adapter->surpriseremoved || i >= 20)
887 break;
888 } while (!cardp->fwdnldover);
889
890 if (!cardp->fwdnldover) {
891 lbs_pr_info("failed to load fw, resetting device!\n");
892 if (--reset_count >= 0) {
893 libertas_do_reset(priv);
894 goto restart;
895 }
896
897 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
898 ret = -1;
899 goto done;
900 }
901
902 if_usb_submit_rx_urb(priv);
903
904 /* Delay 200 ms to waiting for the FW ready */
905 msleep_interruptible(200);
906
907 priv->adapter->fw_ready = 1;
908
909 done:
910 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
911 return ret;
912 }
913
914 #ifdef CONFIG_PM
915 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
916 {
917 struct usb_card_rec *cardp = usb_get_intfdata(intf);
918 wlan_private *priv = cardp->priv;
919
920 lbs_deb_enter(LBS_DEB_USB);
921
922 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
923 return -1;
924
925 netif_device_detach(cardp->eth_dev);
926 netif_device_detach(priv->mesh_dev);
927
928 /* Unlink tx & rx urb */
929 usb_kill_urb(cardp->tx_urb);
930 usb_kill_urb(cardp->rx_urb);
931
932 cardp->rx_urb_recall = 1;
933
934 lbs_deb_leave(LBS_DEB_USB);
935 return 0;
936 }
937
938 static int if_usb_resume(struct usb_interface *intf)
939 {
940 struct usb_card_rec *cardp = usb_get_intfdata(intf);
941 wlan_private *priv = cardp->priv;
942
943 lbs_deb_enter(LBS_DEB_USB);
944
945 cardp->rx_urb_recall = 0;
946
947 if_usb_submit_rx_urb(cardp->priv);
948
949 netif_device_attach(cardp->eth_dev);
950 netif_device_attach(priv->mesh_dev);
951
952 lbs_deb_leave(LBS_DEB_USB);
953 return 0;
954 }
955 #else
956 #define if_usb_suspend NULL
957 #define if_usb_resume NULL
958 #endif
959
960 static struct usb_driver if_usb_driver = {
961 /* driver name */
962 .name = usbdriver_name,
963 /* probe function name */
964 .probe = if_usb_probe,
965 /* disconnect function name */
966 .disconnect = if_usb_disconnect,
967 /* device signature table */
968 .id_table = if_usb_table,
969 .suspend = if_usb_suspend,
970 .resume = if_usb_resume,
971 };
972
973 static int if_usb_init_module(void)
974 {
975 int ret = 0;
976
977 lbs_deb_enter(LBS_DEB_MAIN);
978
979 if (libertas_fw_name == NULL) {
980 libertas_fw_name = default_fw_name;
981 }
982
983 ret = usb_register(&if_usb_driver);
984
985 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
986 return ret;
987 }
988
989 static void if_usb_exit_module(void)
990 {
991 int i;
992
993 lbs_deb_enter(LBS_DEB_MAIN);
994
995 for (i = 0; i<libertas_found; i++) {
996 wlan_private *priv = libertas_devs[i]->priv;
997 reset_device(priv);
998 }
999
1000 /* API unregisters the driver from USB subsystem */
1001 usb_deregister(&if_usb_driver);
1002
1003 lbs_deb_leave(LBS_DEB_MAIN);
1004 }
1005
1006 module_init(if_usb_init_module);
1007 module_exit(if_usb_exit_module);
1008
1009 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1010 MODULE_AUTHOR("Marvell International Ltd.");
1011 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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