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7ce57d4bcc8146c79eda5671965e04d708e3895b
[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/firmware.h>
6 #include <linux/netdevice.h>
7 #include <linux/usb.h>
8
9 #include "host.h"
10 #include "sbi.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
20 #define MAX_DEVS 5
21 static struct net_device *libertas_devs[MAX_DEVS];
22 static int libertas_found = 0;
23
24 static struct usb_device_id if_usb_table[] = {
25 /* Enter the device signature inside */
26 { USB_DEVICE(0x1286, 0x2001) },
27 { USB_DEVICE(0x05a3, 0x8388) },
28 {} /* Terminating entry */
29 };
30
31 MODULE_DEVICE_TABLE(usb, if_usb_table);
32
33 static void if_usb_receive(struct urb *urb);
34 static void if_usb_receive_fwload(struct urb *urb);
35 static int reset_device(wlan_private *priv);
36
37 /**
38 * @brief call back function to handle the status of the URB
39 * @param urb pointer to urb structure
40 * @return N/A
41 */
42 static void if_usb_write_bulk_callback(struct urb *urb)
43 {
44 wlan_private *priv = (wlan_private *) (urb->context);
45 wlan_adapter *adapter = priv->adapter;
46 struct net_device *dev = priv->wlan_dev.netdev;
47
48 /* handle the transmission complete validations */
49
50 if (urb->status != 0) {
51 /* print the failure status number for debug */
52 lbs_pr_info("URB in failure status\n");
53 } else {
54 /*
55 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
56 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
57 urb->actual_length);
58 */
59 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
60 /* Wake main thread if commands are pending */
61 if (!adapter->cur_cmd)
62 wake_up_interruptible(&priv->mainthread.waitq);
63 if ((adapter->connect_status == libertas_connected)) {
64 netif_wake_queue(dev);
65 netif_wake_queue(priv->mesh_dev);
66 }
67 }
68
69 return;
70 }
71
72 /**
73 * @brief free tx/rx urb, skb and rx buffer
74 * @param cardp pointer usb_card_rec
75 * @return N/A
76 */
77 void if_usb_free(struct usb_card_rec *cardp)
78 {
79 lbs_deb_enter(LBS_DEB_USB);
80
81 /* Unlink tx & rx urb */
82 usb_kill_urb(cardp->tx_urb);
83 usb_kill_urb(cardp->rx_urb);
84
85 usb_free_urb(cardp->tx_urb);
86 cardp->tx_urb = NULL;
87
88 usb_free_urb(cardp->rx_urb);
89 cardp->rx_urb = NULL;
90
91 kfree(cardp->bulk_out_buffer);
92 cardp->bulk_out_buffer = NULL;
93
94 lbs_deb_leave(LBS_DEB_USB);
95 }
96
97 /**
98 * @brief sets the configuration values
99 * @param ifnum interface number
100 * @param id pointer to usb_device_id
101 * @return 0 on success, error code on failure
102 */
103 static int if_usb_probe(struct usb_interface *intf,
104 const struct usb_device_id *id)
105 {
106 struct usb_device *udev;
107 struct usb_host_interface *iface_desc;
108 struct usb_endpoint_descriptor *endpoint;
109 wlan_private *priv;
110 struct usb_card_rec *usb_cardp;
111 int i;
112
113 udev = interface_to_usbdev(intf);
114
115 usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
116 if (!usb_cardp) {
117 lbs_pr_err("Out of memory allocating private data.\n");
118 goto error;
119 }
120
121 usb_cardp->udev = udev;
122 iface_desc = intf->cur_altsetting;
123
124 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
125 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
126 udev->descriptor.bcdUSB,
127 udev->descriptor.bDeviceClass,
128 udev->descriptor.bDeviceSubClass,
129 udev->descriptor.bDeviceProtocol);
130
131 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
132 endpoint = &iface_desc->endpoint[i].desc;
133 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
134 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
135 USB_ENDPOINT_XFER_BULK)) {
136 /* we found a bulk in endpoint */
137 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
138 endpoint->wMaxPacketSize);
139 if (!
140 (usb_cardp->rx_urb =
141 usb_alloc_urb(0, GFP_KERNEL))) {
142 lbs_deb_usbd(&udev->dev,
143 "Rx URB allocation failed\n");
144 goto dealloc;
145 }
146 usb_cardp->rx_urb_recall = 0;
147
148 usb_cardp->bulk_in_size =
149 endpoint->wMaxPacketSize;
150 usb_cardp->bulk_in_endpointAddr =
151 (endpoint->
152 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
153 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
154 endpoint->bEndpointAddress);
155 }
156
157 if (((endpoint->
158 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
159 USB_DIR_OUT)
160 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
161 USB_ENDPOINT_XFER_BULK)) {
162 /* We found bulk out endpoint */
163 if (!
164 (usb_cardp->tx_urb =
165 usb_alloc_urb(0, GFP_KERNEL))) {
166 lbs_deb_usbd(&udev->dev,
167 "Tx URB allocation failed\n");
168 goto dealloc;
169 }
170
171 usb_cardp->bulk_out_size =
172 endpoint->wMaxPacketSize;
173 lbs_deb_usbd(&udev->dev,
174 "Bulk out size is %d\n",
175 endpoint->wMaxPacketSize);
176 usb_cardp->bulk_out_endpointAddr =
177 endpoint->bEndpointAddress;
178 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
179 endpoint->bEndpointAddress);
180 usb_cardp->bulk_out_buffer =
181 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
182 GFP_KERNEL);
183
184 if (!usb_cardp->bulk_out_buffer) {
185 lbs_deb_usbd(&udev->dev,
186 "Could not allocate buffer\n");
187 goto dealloc;
188 }
189 }
190 }
191
192
193 /* At this point wlan_add_card() will be called. Don't worry
194 * about keeping pwlanpriv around since it will be set on our
195 * usb device data in -> add() -> libertas_sbi_register_dev().
196 */
197 if (!(priv = wlan_add_card(usb_cardp)))
198 goto dealloc;
199
200 if (wlan_add_mesh(priv))
201 goto dealloc;
202
203 if (libertas_activate_card(priv))
204 goto dealloc;
205
206 if (libertas_found < MAX_DEVS) {
207 libertas_devs[libertas_found] = priv->wlan_dev.netdev;
208 libertas_found++;
209 }
210
211 usb_get_dev(udev);
212 usb_set_intfdata(intf, usb_cardp);
213
214 /*
215 * return card structure, which can be got back in the
216 * diconnect function as the ptr
217 * argument.
218 */
219 return 0;
220
221 dealloc:
222 if_usb_free(usb_cardp);
223
224 error:
225 return -ENOMEM;
226 }
227
228 /**
229 * @brief free resource and cleanup
230 * @param udev pointer to usb_device
231 * @param ptr pointer to usb_cardp
232 * @return N/A
233 */
234 static void if_usb_disconnect(struct usb_interface *intf)
235 {
236 struct usb_card_rec *cardp = usb_get_intfdata(intf);
237 wlan_private *priv = (wlan_private *) cardp->priv;
238 wlan_adapter *adapter = NULL;
239 int i;
240
241 adapter = priv->adapter;
242
243 /*
244 * Update Surprise removed to TRUE
245 */
246 adapter->surpriseremoved = 1;
247
248 for (i = 0; i<libertas_found; i++) {
249 if (libertas_devs[i]==priv->wlan_dev.netdev) {
250 libertas_devs[i] = libertas_devs[--libertas_found];
251 libertas_devs[libertas_found] = NULL ;
252 break;
253 }
254 }
255
256 /* card is removed and we can call wlan_remove_card */
257 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
258 wlan_remove_mesh(priv);
259 wlan_remove_card(priv);
260
261 /* Unlink and free urb */
262 if_usb_free(cardp);
263
264 usb_set_intfdata(intf, NULL);
265 usb_put_dev(interface_to_usbdev(intf));
266
267 return;
268 }
269
270 /**
271 * @brief This function download FW
272 * @param priv pointer to wlan_private
273 * @return 0
274 */
275 static int if_prog_firmware(wlan_private * priv)
276 {
277 struct usb_card_rec *cardp = priv->wlan_dev.card;
278 struct FWData *fwdata;
279 struct fwheader *fwheader;
280 u8 *firmware = priv->firmware->data;
281
282 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
283
284 if (!fwdata)
285 return -1;
286
287 fwheader = &fwdata->fwheader;
288
289 if (!cardp->CRC_OK) {
290 cardp->totalbytes = cardp->fwlastblksent;
291 cardp->fwseqnum = cardp->lastseqnum - 1;
292 }
293
294 /*
295 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
296 cardp->totalbytes);
297 */
298
299 memcpy(fwheader, &firmware[cardp->totalbytes],
300 sizeof(struct fwheader));
301
302 cardp->fwlastblksent = cardp->totalbytes;
303 cardp->totalbytes += sizeof(struct fwheader);
304
305 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
306 memcpy(fwdata->data, &firmware[cardp->totalbytes],
307 fwdata->fwheader.datalength);
308
309 /*
310 lbs_deb_usbd(&cardp->udev->dev,
311 "Data length = %d\n", fwdata->fwheader.datalength);
312 */
313
314 cardp->fwseqnum = cardp->fwseqnum + 1;
315
316 fwdata->seqnum = cardp->fwseqnum;
317 cardp->lastseqnum = fwdata->seqnum;
318 cardp->totalbytes += fwdata->fwheader.datalength;
319
320 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
321 /*
322 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
323 lbs_deb_usbd(&cardp->udev->dev,
324 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
325 cardp->totalbytes);
326 */
327 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
328 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
329
330 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
331 /*
332 lbs_deb_usbd(&cardp->udev->dev,
333 "Host has finished FW downloading\n");
334 lbs_deb_usbd(&cardp->udev->dev,
335 "Donwloading FW JUMP BLOCK\n");
336 */
337 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
338 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
339 cardp->fwfinalblk = 1;
340 }
341
342 /*
343 lbs_deb_usbd(&cardp->udev->dev,
344 "The firmware download is done size is %d\n",
345 cardp->totalbytes);
346 */
347
348 kfree(fwdata);
349
350 return 0;
351 }
352
353 static int libertas_do_reset(wlan_private *priv)
354 {
355 int ret;
356 struct usb_card_rec *cardp = priv->wlan_dev.card;
357
358 lbs_deb_enter(LBS_DEB_USB);
359
360 ret = usb_reset_device(cardp->udev);
361 if (!ret) {
362 msleep(10);
363 reset_device(priv);
364 msleep(10);
365 }
366
367 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
368
369 return ret;
370 }
371
372 /**
373 * @brief This function transfer the data to the device.
374 * @param priv pointer to wlan_private
375 * @param payload pointer to payload data
376 * @param nb data length
377 * @return 0 or -1
378 */
379 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
380 {
381 /* pointer to card structure */
382 struct usb_card_rec *cardp = priv->wlan_dev.card;
383 int ret = -1;
384
385 /* check if device is removed */
386 if (priv->adapter->surpriseremoved) {
387 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
388 goto tx_ret;
389 }
390
391 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
392 usb_sndbulkpipe(cardp->udev,
393 cardp->bulk_out_endpointAddr),
394 payload, nb, if_usb_write_bulk_callback, priv);
395
396 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
397
398 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
399 /* transfer failed */
400 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
401 ret = -1;
402 } else {
403 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
404 ret = 0;
405 }
406
407 tx_ret:
408 return ret;
409 }
410
411 static int __if_usb_submit_rx_urb(wlan_private * priv,
412 void (*callbackfn)
413 (struct urb *urb))
414 {
415 struct usb_card_rec *cardp = priv->wlan_dev.card;
416 struct sk_buff *skb;
417 struct read_cb_info *rinfo = &cardp->rinfo;
418 int ret = -1;
419
420 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
421 lbs_pr_err("No free skb\n");
422 goto rx_ret;
423 }
424
425 rinfo->skb = skb;
426
427 /* Fill the receive configuration URB and initialise the Rx call back */
428 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
429 usb_rcvbulkpipe(cardp->udev,
430 cardp->bulk_in_endpointAddr),
431 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
432 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
433 rinfo);
434
435 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
436
437 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
438 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
439 /* handle failure conditions */
440 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
441 ret = -1;
442 } else {
443 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
444 ret = 0;
445 }
446
447 rx_ret:
448 return ret;
449 }
450
451 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
452 {
453 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
454 }
455
456 static inline int if_usb_submit_rx_urb(wlan_private * priv)
457 {
458 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
459 }
460
461 static void if_usb_receive_fwload(struct urb *urb)
462 {
463 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
464 wlan_private *priv = rinfo->priv;
465 struct sk_buff *skb = rinfo->skb;
466 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
467 struct fwsyncheader *syncfwheader;
468 struct bootcmdrespStr bootcmdresp;
469
470 if (urb->status) {
471 lbs_deb_usbd(&cardp->udev->dev,
472 "URB status is failed during fw load\n");
473 kfree_skb(skb);
474 return;
475 }
476
477 if (cardp->bootcmdresp == 0) {
478 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
479 sizeof(bootcmdresp));
480 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
481 kfree_skb(skb);
482 if_usb_submit_rx_urb_fwload(priv);
483 cardp->bootcmdresp = 1;
484 lbs_deb_usbd(&cardp->udev->dev,
485 "Received valid boot command response\n");
486 return;
487 }
488 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
489 lbs_pr_info(
490 "boot cmd response wrong magic number (0x%x)\n",
491 bootcmdresp.u32magicnumber);
492 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
493 lbs_pr_info(
494 "boot cmd response cmd_tag error (%d)\n",
495 bootcmdresp.u8cmd_tag);
496 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
497 lbs_pr_info(
498 "boot cmd response result error (%d)\n",
499 bootcmdresp.u8result);
500 } else {
501 cardp->bootcmdresp = 1;
502 lbs_deb_usbd(&cardp->udev->dev,
503 "Received valid boot command response\n");
504 }
505 kfree_skb(skb);
506 if_usb_submit_rx_urb_fwload(priv);
507 return;
508 }
509
510 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
511 if (!syncfwheader) {
512 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
513 kfree_skb(skb);
514 return;
515 }
516
517 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
518 sizeof(struct fwsyncheader));
519
520 if (!syncfwheader->cmd) {
521 /*
522 lbs_deb_usbd(&cardp->udev->dev,
523 "FW received Blk with correct CRC\n");
524 lbs_deb_usbd(&cardp->udev->dev,
525 "FW received Blk seqnum = %d\n",
526 syncfwheader->seqnum);
527 */
528 cardp->CRC_OK = 1;
529 } else {
530 lbs_deb_usbd(&cardp->udev->dev,
531 "FW received Blk with CRC error\n");
532 cardp->CRC_OK = 0;
533 }
534
535 kfree_skb(skb);
536
537 if (cardp->fwfinalblk) {
538 cardp->fwdnldover = 1;
539 goto exit;
540 }
541
542 if_prog_firmware(priv);
543
544 if_usb_submit_rx_urb_fwload(priv);
545 exit:
546 kfree(syncfwheader);
547
548 return;
549
550 }
551
552 #define MRVDRV_MIN_PKT_LEN 30
553
554 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
555 struct usb_card_rec *cardp,
556 wlan_private *priv)
557 {
558 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
559 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
560 lbs_deb_usbd(&cardp->udev->dev,
561 "Packet length is Invalid\n");
562 kfree_skb(skb);
563 return;
564 }
565
566 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
567 skb_put(skb, recvlength);
568 skb_pull(skb, MESSAGE_HEADER_LEN);
569 libertas_process_rxed_packet(priv, skb);
570 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
571 }
572
573 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
574 struct sk_buff *skb,
575 struct usb_card_rec *cardp,
576 wlan_private *priv)
577 {
578 u8 *cmdbuf;
579 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
580 lbs_deb_usbd(&cardp->udev->dev,
581 "The receive buffer is too large\n");
582 kfree_skb(skb);
583 return;
584 }
585
586 if (!in_interrupt())
587 BUG();
588
589 spin_lock(&priv->adapter->driver_lock);
590 /* take care of cur_cmd = NULL case by reading the
591 * data to clear the interrupt */
592 if (!priv->adapter->cur_cmd) {
593 cmdbuf = priv->wlan_dev.upld_buf;
594 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
595 } else
596 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
597
598 cardp->usb_int_cause |= his_cmdupldrdy;
599 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
600 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
601 priv->wlan_dev.upld_len);
602
603 kfree_skb(skb);
604 libertas_interrupt(priv->wlan_dev.netdev);
605 spin_unlock(&priv->adapter->driver_lock);
606
607 lbs_deb_usbd(&cardp->udev->dev,
608 "Wake up main thread to handle cmd response\n");
609
610 return;
611 }
612
613 /**
614 * @brief This function reads of the packet into the upload buff,
615 * wake up the main thread and initialise the Rx callack.
616 *
617 * @param urb pointer to struct urb
618 * @return N/A
619 */
620 static void if_usb_receive(struct urb *urb)
621 {
622 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
623 wlan_private *priv = rinfo->priv;
624 struct sk_buff *skb = rinfo->skb;
625 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
626
627 int recvlength = urb->actual_length;
628 u8 *recvbuff = NULL;
629 u32 recvtype;
630
631 lbs_deb_enter(LBS_DEB_USB);
632
633 if (recvlength) {
634 if (urb->status) {
635 lbs_deb_usbd(&cardp->udev->dev,
636 "URB status is failed\n");
637 kfree_skb(skb);
638 goto setup_for_next;
639 }
640
641 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
642 memcpy(&recvtype, recvbuff, sizeof(u32));
643 lbs_deb_usbd(&cardp->udev->dev,
644 "Recv length = 0x%x\n", recvlength);
645 lbs_deb_usbd(&cardp->udev->dev,
646 "Receive type = 0x%X\n", recvtype);
647 recvtype = le32_to_cpu(recvtype);
648 lbs_deb_usbd(&cardp->udev->dev,
649 "Receive type after = 0x%X\n", recvtype);
650 } else if (urb->status)
651 goto rx_exit;
652
653
654 switch (recvtype) {
655 case CMD_TYPE_DATA:
656 process_cmdtypedata(recvlength, skb, cardp, priv);
657 break;
658
659 case CMD_TYPE_REQUEST:
660 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
661 break;
662
663 case CMD_TYPE_INDICATION:
664 /* Event cause handling */
665 spin_lock(&priv->adapter->driver_lock);
666 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
667 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
668 cardp->usb_event_cause);
669 if (cardp->usb_event_cause & 0xffff0000) {
670 libertas_send_tx_feedback(priv);
671 spin_unlock(&priv->adapter->driver_lock);
672 break;
673 }
674 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
675 cardp->usb_int_cause |= his_cardevent;
676 kfree_skb(skb);
677 libertas_interrupt(priv->wlan_dev.netdev);
678 spin_unlock(&priv->adapter->driver_lock);
679 goto rx_exit;
680 default:
681 kfree_skb(skb);
682 break;
683 }
684
685 setup_for_next:
686 if_usb_submit_rx_urb(priv);
687 rx_exit:
688 lbs_deb_leave(LBS_DEB_USB);
689 }
690
691 /**
692 * @brief This function downloads data to FW
693 * @param priv pointer to wlan_private structure
694 * @param type type of data
695 * @param buf pointer to data buffer
696 * @param len number of bytes
697 * @return 0 or -1
698 */
699 int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
700 {
701 int ret = -1;
702 u32 tmp;
703 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
704
705 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
706 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
707
708 if (type == MVMS_CMD) {
709 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
710 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
711 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
712 MESSAGE_HEADER_LEN);
713
714 } else {
715 tmp = cpu_to_le32(CMD_TYPE_DATA);
716 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
717 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
718 MESSAGE_HEADER_LEN);
719 }
720
721 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
722
723 ret =
724 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
725
726 return ret;
727 }
728
729 /* called with adapter->driver_lock held */
730 int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
731 {
732 struct usb_card_rec *cardp = priv->wlan_dev.card;
733
734 *ireg = cardp->usb_int_cause;
735 cardp->usb_int_cause = 0;
736
737 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
738
739 return 0;
740 }
741
742 int libertas_sbi_read_event_cause(wlan_private * priv)
743 {
744 struct usb_card_rec *cardp = priv->wlan_dev.card;
745 priv->adapter->eventcause = cardp->usb_event_cause;
746 /* Re-submit rx urb here to avoid event lost issue */
747 if_usb_submit_rx_urb(priv);
748 return 0;
749 }
750
751 static int reset_device(wlan_private *priv)
752 {
753 int ret;
754
755 lbs_deb_enter(LBS_DEB_USB);
756 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
757 cmd_act_halt, 0, 0, NULL);
758 msleep_interruptible(10);
759
760 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
761 return ret;
762 }
763
764 int libertas_sbi_unregister_dev(wlan_private * priv)
765 {
766 int ret = 0;
767
768 /* Need to send a Reset command to device before USB resources freed
769 * and wlan_remove_card() called, then device can handle FW download
770 * again.
771 */
772 if (priv)
773 reset_device(priv);
774
775 return ret;
776 }
777
778
779 /**
780 * @brief This function register usb device and initialize parameter
781 * @param priv pointer to wlan_private
782 * @return 0 or -1
783 */
784 int libertas_sbi_register_dev(wlan_private * priv)
785 {
786 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
787
788 lbs_deb_enter(LBS_DEB_USB);
789
790 cardp->priv = priv;
791 cardp->eth_dev = priv->wlan_dev.netdev;
792 priv->hotplug_device = &(cardp->udev->dev);
793
794 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
795 SET_NETDEV_DEV(priv->mesh_dev, &(cardp->udev->dev));
796
797 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
798 cardp->udev);
799
800 lbs_deb_leave(LBS_DEB_USB);
801 return 0;
802 }
803
804
805
806 int libertas_sbi_prog_firmware(wlan_private * priv)
807 {
808 struct usb_card_rec *cardp = priv->wlan_dev.card;
809 int i = 0;
810 static int reset_count = 10;
811 int ret = 0;
812
813 lbs_deb_enter(LBS_DEB_USB);
814
815 cardp->rinfo.priv = priv;
816
817 restart:
818 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
819 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
820 ret = -1;
821 goto done;
822 }
823
824 cardp->bootcmdresp = 0;
825 do {
826 int j = 0;
827 i++;
828 /* Issue Boot command = 1, Boot from Download-FW */
829 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
830 /* wait for command response */
831 do {
832 j++;
833 msleep_interruptible(100);
834 } while (cardp->bootcmdresp == 0 && j < 10);
835 } while (cardp->bootcmdresp == 0 && i < 5);
836
837 if (cardp->bootcmdresp == 0) {
838 if (--reset_count >= 0) {
839 libertas_do_reset(priv);
840 goto restart;
841 }
842 return -1;
843 }
844
845 i = 0;
846 priv->adapter->fw_ready = 0;
847
848 cardp->totalbytes = 0;
849 cardp->fwlastblksent = 0;
850 cardp->CRC_OK = 1;
851 cardp->fwdnldover = 0;
852 cardp->fwseqnum = -1;
853 cardp->totalbytes = 0;
854 cardp->fwfinalblk = 0;
855
856 if_prog_firmware(priv);
857
858 do {
859 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
860 i++;
861 msleep_interruptible(100);
862 if (priv->adapter->surpriseremoved || i >= 20)
863 break;
864 } while (!cardp->fwdnldover);
865
866 if (!cardp->fwdnldover) {
867 lbs_pr_info("failed to load fw, resetting device!\n");
868 if (--reset_count >= 0) {
869 libertas_do_reset(priv);
870 goto restart;
871 }
872
873 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
874 ret = -1;
875 goto done;
876 }
877
878 if_usb_submit_rx_urb(priv);
879
880 /* Delay 200 ms to waiting for the FW ready */
881 msleep_interruptible(200);
882
883 priv->adapter->fw_ready = 1;
884
885 done:
886 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
887 return ret;
888 }
889
890 #ifdef CONFIG_PM
891 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
892 {
893 struct usb_card_rec *cardp = usb_get_intfdata(intf);
894 wlan_private *priv = cardp->priv;
895
896 lbs_deb_enter(LBS_DEB_USB);
897
898 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
899 return -1;
900
901 netif_device_detach(cardp->eth_dev);
902 netif_device_detach(priv->mesh_dev);
903
904 /* Unlink tx & rx urb */
905 usb_kill_urb(cardp->tx_urb);
906 usb_kill_urb(cardp->rx_urb);
907
908 cardp->rx_urb_recall = 1;
909
910 lbs_deb_leave(LBS_DEB_USB);
911 return 0;
912 }
913
914 static int if_usb_resume(struct usb_interface *intf)
915 {
916 struct usb_card_rec *cardp = usb_get_intfdata(intf);
917 wlan_private *priv = cardp->priv;
918
919 lbs_deb_enter(LBS_DEB_USB);
920
921 cardp->rx_urb_recall = 0;
922
923 if_usb_submit_rx_urb(cardp->priv);
924
925 netif_device_attach(cardp->eth_dev);
926 netif_device_attach(priv->mesh_dev);
927
928 lbs_deb_leave(LBS_DEB_USB);
929 return 0;
930 }
931 #else
932 #define if_usb_suspend NULL
933 #define if_usb_resume NULL
934 #endif
935
936 static struct usb_driver if_usb_driver = {
937 /* driver name */
938 .name = usbdriver_name,
939 /* probe function name */
940 .probe = if_usb_probe,
941 /* disconnect function name */
942 .disconnect = if_usb_disconnect,
943 /* device signature table */
944 .id_table = if_usb_table,
945 .suspend = if_usb_suspend,
946 .resume = if_usb_resume,
947 };
948
949 /**
950 * @brief This function registers driver.
951 * @param add pointer to add_card callback function
952 * @param remove pointer to remove card callback function
953 * @param arg pointer to call back function parameter
954 * @return dummy success variable
955 */
956 int libertas_sbi_register(void)
957 {
958 /*
959 * API registers the Marvell USB driver
960 * to the USB system
961 */
962 usb_register(&if_usb_driver);
963
964 /* Return success to wlan layer */
965 return 0;
966 }
967
968 /**
969 * @brief This function removes usb driver.
970 * @return N/A
971 */
972 void libertas_sbi_unregister(void)
973 {
974 int i;
975
976 for (i = 0; i<libertas_found; i++) {
977 wlan_private *priv = libertas_devs[i]->priv;
978 reset_device(priv);
979 }
980
981 /* API unregisters the driver from USB subsystem */
982 usb_deregister(&if_usb_driver);
983 }
Linux kernel - Deliverables
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