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[PATCH] libertas: get rid of libertas_sbi_get_priv()
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / libertas / if_usb.c
blobbf7ef6582c5961351c48d87b9ed666749feeb47d
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 static struct usb_device_id if_usb_table[] = {
21 /* Enter the device signature inside */
22 { USB_DEVICE(0x1286, 0x2001) },
23 { USB_DEVICE(0x05a3, 0x8388) },
24 {} /* Terminating entry */
25 };
26
27 MODULE_DEVICE_TABLE(usb, if_usb_table);
28
29 static void if_usb_receive(struct urb *urb);
30 static void if_usb_receive_fwload(struct urb *urb);
31
32 /**
33 * @brief call back function to handle the status of the URB
34 * @param urb pointer to urb structure
35 * @return N/A
36 */
37 static void if_usb_write_bulk_callback(struct urb *urb)
38 {
39 wlan_private *priv = (wlan_private *) (urb->context);
40 wlan_adapter *adapter = priv->adapter;
41 struct net_device *dev = priv->wlan_dev.netdev;
42
43 /* handle the transmission complete validations */
44
45 if (urb->status != 0) {
46 /* print the failure status number for debug */
47 lbs_pr_info("URB in failure status\n");
48 } else {
49 /*
50 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
51 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
52 urb->actual_length);
53 */
54 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
55 /* Wake main thread if commands are pending */
56 if (!adapter->cur_cmd)
57 wake_up_interruptible(&priv->mainthread.waitq);
58 if ((adapter->connect_status == libertas_connected))
59 netif_wake_queue(dev);
60 }
61
62 return;
63 }
64
65 /**
66 * @brief free tx/rx urb, skb and rx buffer
67 * @param cardp pointer usb_card_rec
68 * @return N/A
69 */
70 void if_usb_free(struct usb_card_rec *cardp)
71 {
72 lbs_deb_enter(LBS_DEB_USB);
73
74 /* Unlink tx & rx urb */
75 usb_kill_urb(cardp->tx_urb);
76 usb_kill_urb(cardp->rx_urb);
77
78 usb_free_urb(cardp->tx_urb);
79 cardp->tx_urb = NULL;
80
81 usb_free_urb(cardp->rx_urb);
82 cardp->rx_urb = NULL;
83
84 kfree(cardp->bulk_out_buffer);
85 cardp->bulk_out_buffer = NULL;
86
87 lbs_deb_leave(LBS_DEB_USB);
88 }
89
90 /**
91 * @brief sets the configuration values
92 * @param ifnum interface number
93 * @param id pointer to usb_device_id
94 * @return 0 on success, error code on failure
95 */
96 static int if_usb_probe(struct usb_interface *intf,
97 const struct usb_device_id *id)
98 {
99 struct usb_device *udev;
100 struct usb_host_interface *iface_desc;
101 struct usb_endpoint_descriptor *endpoint;
102 wlan_private *priv;
103 struct usb_card_rec *usb_cardp;
104 int i;
105
106 udev = interface_to_usbdev(intf);
107
108 usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
109 if (!usb_cardp) {
110 lbs_pr_err("Out of memory allocating private data.\n");
111 goto error;
112 }
113
114 usb_cardp->udev = udev;
115 iface_desc = intf->cur_altsetting;
116
117 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
118 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
119 udev->descriptor.bcdUSB,
120 udev->descriptor.bDeviceClass,
121 udev->descriptor.bDeviceSubClass,
122 udev->descriptor.bDeviceProtocol);
123
124 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
125 endpoint = &iface_desc->endpoint[i].desc;
126 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
127 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
128 USB_ENDPOINT_XFER_BULK)) {
129 /* we found a bulk in endpoint */
130 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
131 endpoint->wMaxPacketSize);
132 if (!
133 (usb_cardp->rx_urb =
134 usb_alloc_urb(0, GFP_KERNEL))) {
135 lbs_deb_usbd(&udev->dev,
136 "Rx URB allocation failed\n");
137 goto dealloc;
138 }
139 usb_cardp->rx_urb_recall = 0;
140
141 usb_cardp->bulk_in_size =
142 endpoint->wMaxPacketSize;
143 usb_cardp->bulk_in_endpointAddr =
144 (endpoint->
145 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
146 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
147 endpoint->bEndpointAddress);
148 }
149
150 if (((endpoint->
151 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
152 USB_DIR_OUT)
153 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
154 USB_ENDPOINT_XFER_BULK)) {
155 /* We found bulk out endpoint */
156 if (!
157 (usb_cardp->tx_urb =
158 usb_alloc_urb(0, GFP_KERNEL))) {
159 lbs_deb_usbd(&udev->dev,
160 "Tx URB allocation failed\n");
161 goto dealloc;
162 }
163
164 usb_cardp->bulk_out_size =
165 endpoint->wMaxPacketSize;
166 lbs_deb_usbd(&udev->dev,
167 "Bulk out size is %d\n",
168 endpoint->wMaxPacketSize);
169 usb_cardp->bulk_out_endpointAddr =
170 endpoint->bEndpointAddress;
171 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
172 endpoint->bEndpointAddress);
173 usb_cardp->bulk_out_buffer =
174 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
175 GFP_KERNEL);
176
177 if (!usb_cardp->bulk_out_buffer) {
178 lbs_deb_usbd(&udev->dev,
179 "Could not allocate buffer\n");
180 goto dealloc;
181 }
182 }
183 }
184
185
186 /* At this point wlan_add_card() will be called. Don't worry
187 * about keeping pwlanpriv around since it will be set on our
188 * usb device data in -> add() -> libertas_sbi_register_dev().
189 */
190 if (!(priv = wlan_add_card(usb_cardp)))
191 goto dealloc;
192 if (wlan_add_mesh(priv))
193 goto dealloc;
194
195 usb_get_dev(udev);
196 usb_set_intfdata(intf, usb_cardp);
197
198 /*
199 * return card structure, which can be got back in the
200 * diconnect function as the ptr
201 * argument.
202 */
203 return 0;
204
205 dealloc:
206 if_usb_free(usb_cardp);
207
208 error:
209 return -ENOMEM;
210 }
211
212 /**
213 * @brief free resource and cleanup
214 * @param udev pointer to usb_device
215 * @param ptr pointer to usb_cardp
216 * @return N/A
217 */
218 static void if_usb_disconnect(struct usb_interface *intf)
219 {
220 struct usb_card_rec *cardp = usb_get_intfdata(intf);
221 wlan_private *priv = (wlan_private *) cardp->priv;
222 wlan_adapter *adapter = NULL;
223
224 adapter = priv->adapter;
225
226 /*
227 * Update Surprise removed to TRUE
228 */
229 adapter->surpriseremoved = 1;
230
231 /* card is removed and we can call wlan_remove_card */
232 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
233 wlan_remove_mesh(priv);
234 wlan_remove_card(priv);
235
236 /* Unlink and free urb */
237 if_usb_free(cardp);
238
239 usb_set_intfdata(intf, NULL);
240 usb_put_dev(interface_to_usbdev(intf));
241
242 return;
243 }
244
245 /**
246 * @brief This function download FW
247 * @param priv pointer to wlan_private
248 * @return 0
249 */
250 static int if_prog_firmware(wlan_private * priv)
251 {
252 struct usb_card_rec *cardp = priv->wlan_dev.card;
253 struct FWData *fwdata;
254 struct fwheader *fwheader;
255 u8 *firmware = priv->firmware->data;
256
257 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
258
259 if (!fwdata)
260 return -1;
261
262 fwheader = &fwdata->fwheader;
263
264 if (!cardp->CRC_OK) {
265 cardp->totalbytes = cardp->fwlastblksent;
266 cardp->fwseqnum = cardp->lastseqnum - 1;
267 }
268
269 /*
270 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
271 cardp->totalbytes);
272 */
273
274 memcpy(fwheader, &firmware[cardp->totalbytes],
275 sizeof(struct fwheader));
276
277 cardp->fwlastblksent = cardp->totalbytes;
278 cardp->totalbytes += sizeof(struct fwheader);
279
280 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
281 memcpy(fwdata->data, &firmware[cardp->totalbytes],
282 fwdata->fwheader.datalength);
283
284 /*
285 lbs_deb_usbd(&cardp->udev->dev,
286 "Data length = %d\n", fwdata->fwheader.datalength);
287 */
288
289 cardp->fwseqnum = cardp->fwseqnum + 1;
290
291 fwdata->seqnum = cardp->fwseqnum;
292 cardp->lastseqnum = fwdata->seqnum;
293 cardp->totalbytes += fwdata->fwheader.datalength;
294
295 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
296 /*
297 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
298 lbs_deb_usbd(&cardp->udev->dev,
299 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
300 cardp->totalbytes);
301 */
302 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
303 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
304
305 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
306 /*
307 lbs_deb_usbd(&cardp->udev->dev,
308 "Host has finished FW downloading\n");
309 lbs_deb_usbd(&cardp->udev->dev,
310 "Donwloading FW JUMP BLOCK\n");
311 */
312 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
313 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
314 cardp->fwfinalblk = 1;
315 }
316
317 /*
318 lbs_deb_usbd(&cardp->udev->dev,
319 "The firmware download is done size is %d\n",
320 cardp->totalbytes);
321 */
322
323 kfree(fwdata);
324
325 return 0;
326 }
327
328 static int libertas_do_reset(wlan_private *priv)
329 {
330 int ret;
331 struct usb_card_rec *cardp = priv->wlan_dev.card;
332
333 ret = usb_reset_device(cardp->udev);
334 if (!ret) {
335 msleep(10);
336 reset_device(priv);
337 msleep(10);
338 }
339 return ret;
340 }
341
342 /**
343 * @brief This function transfer the data to the device.
344 * @param priv pointer to wlan_private
345 * @param payload pointer to payload data
346 * @param nb data length
347 * @return 0 or -1
348 */
349 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
350 {
351 /* pointer to card structure */
352 struct usb_card_rec *cardp = priv->wlan_dev.card;
353 int ret = -1;
354
355 /* check if device is removed */
356 if (priv->adapter->surpriseremoved) {
357 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
358 goto tx_ret;
359 }
360
361 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
362 usb_sndbulkpipe(cardp->udev,
363 cardp->bulk_out_endpointAddr),
364 payload, nb, if_usb_write_bulk_callback, priv);
365
366 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
367
368 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
369 /* transfer failed */
370 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
371 ret = -1;
372 } else {
373 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
374 ret = 0;
375 }
376
377 tx_ret:
378 return ret;
379 }
380
381 static int __if_usb_submit_rx_urb(wlan_private * priv,
382 void (*callbackfn)
383 (struct urb *urb))
384 {
385 struct usb_card_rec *cardp = priv->wlan_dev.card;
386 struct sk_buff *skb;
387 struct read_cb_info *rinfo = &cardp->rinfo;
388 int ret = -1;
389
390 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
391 lbs_pr_err("No free skb\n");
392 goto rx_ret;
393 }
394
395 rinfo->skb = skb;
396
397 /* Fill the receive configuration URB and initialise the Rx call back */
398 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
399 usb_rcvbulkpipe(cardp->udev,
400 cardp->bulk_in_endpointAddr),
401 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
402 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
403 rinfo);
404
405 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
406
407 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
408 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
409 /* handle failure conditions */
410 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
411 ret = -1;
412 } else {
413 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
414 ret = 0;
415 }
416
417 rx_ret:
418 return ret;
419 }
420
421 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
422 {
423 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
424 }
425
426 static inline int if_usb_submit_rx_urb(wlan_private * priv)
427 {
428 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
429 }
430
431 static void if_usb_receive_fwload(struct urb *urb)
432 {
433 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
434 wlan_private *priv = rinfo->priv;
435 struct sk_buff *skb = rinfo->skb;
436 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
437 struct fwsyncheader *syncfwheader;
438 struct bootcmdrespStr bootcmdresp;
439
440 if (urb->status) {
441 lbs_deb_usbd(&cardp->udev->dev,
442 "URB status is failed during fw load\n");
443 kfree_skb(skb);
444 return;
445 }
446
447 if (cardp->bootcmdresp == 0) {
448 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
449 sizeof(bootcmdresp));
450 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
451 kfree_skb(skb);
452 if_usb_submit_rx_urb_fwload(priv);
453 cardp->bootcmdresp = 1;
454 lbs_deb_usbd(&cardp->udev->dev,
455 "Received valid boot command response\n");
456 return;
457 }
458 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
459 lbs_pr_info(
460 "boot cmd response wrong magic number (0x%x)\n",
461 bootcmdresp.u32magicnumber);
462 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
463 lbs_pr_info(
464 "boot cmd response cmd_tag error (%d)\n",
465 bootcmdresp.u8cmd_tag);
466 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
467 lbs_pr_info(
468 "boot cmd response result error (%d)\n",
469 bootcmdresp.u8result);
470 } else {
471 cardp->bootcmdresp = 1;
472 lbs_deb_usbd(&cardp->udev->dev,
473 "Received valid boot command response\n");
474 }
475 kfree_skb(skb);
476 if_usb_submit_rx_urb_fwload(priv);
477 return;
478 }
479
480 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
481 if (!syncfwheader) {
482 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
483 kfree_skb(skb);
484 return;
485 }
486
487 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
488 sizeof(struct fwsyncheader));
489
490 if (!syncfwheader->cmd) {
491 /*
492 lbs_deb_usbd(&cardp->udev->dev,
493 "FW received Blk with correct CRC\n");
494 lbs_deb_usbd(&cardp->udev->dev,
495 "FW received Blk seqnum = %d\n",
496 syncfwheader->seqnum);
497 */
498 cardp->CRC_OK = 1;
499 } else {
500 lbs_deb_usbd(&cardp->udev->dev,
501 "FW received Blk with CRC error\n");
502 cardp->CRC_OK = 0;
503 }
504
505 kfree_skb(skb);
506
507 if (cardp->fwfinalblk) {
508 cardp->fwdnldover = 1;
509 goto exit;
510 }
511
512 if_prog_firmware(priv);
513
514 if_usb_submit_rx_urb_fwload(priv);
515 exit:
516 kfree(syncfwheader);
517
518 return;
519
520 }
521
522 #define MRVDRV_MIN_PKT_LEN 30
523
524 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
525 struct usb_card_rec *cardp,
526 wlan_private *priv)
527 {
528 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
529 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
530 lbs_deb_usbd(&cardp->udev->dev,
531 "Packet length is Invalid\n");
532 kfree_skb(skb);
533 return;
534 }
535
536 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
537 skb_put(skb, recvlength);
538 skb_pull(skb, MESSAGE_HEADER_LEN);
539 libertas_process_rxed_packet(priv, skb);
540 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
541 }
542
543 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
544 struct sk_buff *skb,
545 struct usb_card_rec *cardp,
546 wlan_private *priv)
547 {
548 u8 *cmdbuf;
549 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
550 lbs_deb_usbd(&cardp->udev->dev,
551 "The receive buffer is too large\n");
552 kfree_skb(skb);
553 return;
554 }
555
556 if (!in_interrupt())
557 BUG();
558
559 spin_lock(&priv->adapter->driver_lock);
560 /* take care of cur_cmd = NULL case by reading the
561 * data to clear the interrupt */
562 if (!priv->adapter->cur_cmd) {
563 cmdbuf = priv->wlan_dev.upld_buf;
564 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
565 } else
566 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
567
568 cardp->usb_int_cause |= his_cmdupldrdy;
569 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
570 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
571 priv->wlan_dev.upld_len);
572
573 kfree_skb(skb);
574 libertas_interrupt(priv->wlan_dev.netdev);
575 spin_unlock(&priv->adapter->driver_lock);
576
577 lbs_deb_usbd(&cardp->udev->dev,
578 "Wake up main thread to handle cmd response\n");
579
580 return;
581 }
582
583 /**
584 * @brief This function reads of the packet into the upload buff,
585 * wake up the main thread and initialise the Rx callack.
586 *
587 * @param urb pointer to struct urb
588 * @return N/A
589 */
590 static void if_usb_receive(struct urb *urb)
591 {
592 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
593 wlan_private *priv = rinfo->priv;
594 struct sk_buff *skb = rinfo->skb;
595 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
596
597 int recvlength = urb->actual_length;
598 u8 *recvbuff = NULL;
599 u32 recvtype;
600
601 lbs_deb_enter(LBS_DEB_USB);
602
603 if (recvlength) {
604 if (urb->status) {
605 lbs_deb_usbd(&cardp->udev->dev,
606 "URB status is failed\n");
607 kfree_skb(skb);
608 goto setup_for_next;
609 }
610
611 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
612 memcpy(&recvtype, recvbuff, sizeof(u32));
613 lbs_deb_usbd(&cardp->udev->dev,
614 "Recv length = 0x%x\n", recvlength);
615 lbs_deb_usbd(&cardp->udev->dev,
616 "Receive type = 0x%X\n", recvtype);
617 recvtype = le32_to_cpu(recvtype);
618 lbs_deb_usbd(&cardp->udev->dev,
619 "Receive type after = 0x%X\n", recvtype);
620 } else if (urb->status)
621 goto rx_exit;
622
623
624 switch (recvtype) {
625 case CMD_TYPE_DATA:
626 process_cmdtypedata(recvlength, skb, cardp, priv);
627 break;
628
629 case CMD_TYPE_REQUEST:
630 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
631 break;
632
633 case CMD_TYPE_INDICATION:
634 /* Event cause handling */
635 spin_lock(&priv->adapter->driver_lock);
636 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
637 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
638 cardp->usb_event_cause);
639 if (cardp->usb_event_cause & 0xffff0000) {
640 libertas_send_tx_feedback(priv);
641 spin_unlock(&priv->adapter->driver_lock);
642 break;
643 }
644 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
645 cardp->usb_int_cause |= his_cardevent;
646 kfree_skb(skb);
647 libertas_interrupt(priv->wlan_dev.netdev);
648 spin_unlock(&priv->adapter->driver_lock);
649 goto rx_exit;
650 default:
651 kfree_skb(skb);
652 break;
653 }
654
655 setup_for_next:
656 if_usb_submit_rx_urb(priv);
657 rx_exit:
658 lbs_deb_leave(LBS_DEB_USB);
659 }
660
661 /**
662 * @brief This function downloads data to FW
663 * @param priv pointer to wlan_private structure
664 * @param type type of data
665 * @param buf pointer to data buffer
666 * @param len number of bytes
667 * @return 0 or -1
668 */
669 int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
670 {
671 int ret = -1;
672 u32 tmp;
673 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
674
675 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
676 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
677
678 if (type == MVMS_CMD) {
679 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
680 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
681 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
682 MESSAGE_HEADER_LEN);
683
684 } else {
685 tmp = cpu_to_le32(CMD_TYPE_DATA);
686 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
687 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
688 MESSAGE_HEADER_LEN);
689 }
690
691 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
692
693 ret =
694 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
695
696 return ret;
697 }
698
699 /* called with adapter->driver_lock held */
700 int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
701 {
702 struct usb_card_rec *cardp = priv->wlan_dev.card;
703
704 *ireg = cardp->usb_int_cause;
705 cardp->usb_int_cause = 0;
706
707 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
708
709 return 0;
710 }
711
712 int libertas_sbi_read_event_cause(wlan_private * priv)
713 {
714 struct usb_card_rec *cardp = priv->wlan_dev.card;
715 priv->adapter->eventcause = cardp->usb_event_cause;
716 /* Re-submit rx urb here to avoid event lost issue */
717 if_usb_submit_rx_urb(priv);
718 return 0;
719 }
720
721 int reset_device(wlan_private *priv)
722 {
723 int ret;
724
725 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
726 cmd_act_halt, 0, 0, NULL);
727 msleep_interruptible(10);
728
729 return ret;
730 }
731
732 int libertas_sbi_unregister_dev(wlan_private * priv)
733 {
734 int ret = 0;
735
736 /* Need to send a Reset command to device before USB resources freed
737 * and wlan_remove_card() called, then device can handle FW download
738 * again.
739 */
740 if (priv)
741 reset_device(priv);
742
743 return ret;
744 }
745
746
747 /**
748 * @brief This function register usb device and initialize parameter
749 * @param priv pointer to wlan_private
750 * @return 0 or -1
751 */
752 int libertas_sbi_register_dev(wlan_private * priv)
753 {
754 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
755
756 lbs_deb_enter(LBS_DEB_USB);
757
758 cardp->priv = priv;
759 cardp->eth_dev = priv->wlan_dev.netdev;
760 priv->hotplug_device = &(cardp->udev->dev);
761
762 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
763
764 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
765 cardp->udev);
766
767 lbs_deb_leave(LBS_DEB_USB);
768 return 0;
769 }
770
771
772
773 int libertas_sbi_prog_firmware(wlan_private * priv)
774 {
775 struct usb_card_rec *cardp = priv->wlan_dev.card;
776 int i = 0;
777 static int reset_count = 10;
778 int ret = 0;
779
780 lbs_deb_enter(LBS_DEB_USB);
781
782 cardp->rinfo.priv = priv;
783
784 restart:
785 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
786 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
787 ret = -1;
788 goto done;
789 }
790
791 cardp->bootcmdresp = 0;
792 do {
793 int j = 0;
794 i++;
795 /* Issue Boot command = 1, Boot from Download-FW */
796 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
797 /* wait for command response */
798 do {
799 j++;
800 msleep_interruptible(100);
801 } while (cardp->bootcmdresp == 0 && j < 10);
802 } while (cardp->bootcmdresp == 0 && i < 5);
803
804 if (cardp->bootcmdresp == 0) {
805 if (--reset_count >= 0) {
806 libertas_do_reset(priv);
807 goto restart;
808 }
809 return -1;
810 }
811
812 i = 0;
813 priv->adapter->fw_ready = 0;
814
815 cardp->totalbytes = 0;
816 cardp->fwlastblksent = 0;
817 cardp->CRC_OK = 1;
818 cardp->fwdnldover = 0;
819 cardp->fwseqnum = -1;
820 cardp->totalbytes = 0;
821 cardp->fwfinalblk = 0;
822
823 if_prog_firmware(priv);
824
825 do {
826 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
827 i++;
828 msleep_interruptible(100);
829 if (priv->adapter->surpriseremoved || i >= 20)
830 break;
831 } while (!cardp->fwdnldover);
832
833 if (!cardp->fwdnldover) {
834 lbs_pr_info("failed to load fw, resetting device!\n");
835 if (--reset_count >= 0) {
836 libertas_do_reset(priv);
837 goto restart;
838 }
839
840 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
841 ret = -1;
842 goto done;
843 }
844
845 if_usb_submit_rx_urb(priv);
846
847 /* Delay 200 ms to waiting for the FW ready */
848 msleep_interruptible(200);
849
850 priv->adapter->fw_ready = 1;
851
852 done:
853 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
854 return ret;
855 }
856
857 #ifdef CONFIG_PM
858 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
859 {
860 struct usb_card_rec *cardp = usb_get_intfdata(intf);
861 wlan_private *priv = cardp->priv;
862
863 lbs_deb_enter(LBS_DEB_USB);
864
865 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
866 return -1;
867
868 netif_device_detach(cardp->eth_dev);
869
870 /* Unlink tx & rx urb */
871 usb_kill_urb(cardp->tx_urb);
872 usb_kill_urb(cardp->rx_urb);
873
874 cardp->rx_urb_recall = 1;
875
876 lbs_deb_leave(LBS_DEB_USB);
877 return 0;
878 }
879
880 static int if_usb_resume(struct usb_interface *intf)
881 {
882 struct usb_card_rec *cardp = usb_get_intfdata(intf);
883
884 lbs_deb_enter(LBS_DEB_USB);
885
886 cardp->rx_urb_recall = 0;
887
888 if_usb_submit_rx_urb(cardp->priv);
889
890 netif_device_attach(cardp->eth_dev);
891
892 lbs_deb_leave(LBS_DEB_USB);
893 return 0;
894 }
895 #else
896 #define if_usb_suspend NULL
897 #define if_usb_resume NULL
898 #endif
899
900 static struct usb_driver if_usb_driver = {
901 /* driver name */
902 .name = usbdriver_name,
903 /* probe function name */
904 .probe = if_usb_probe,
905 /* disconnect function name */
906 .disconnect = if_usb_disconnect,
907 /* device signature table */
908 .id_table = if_usb_table,
909 .suspend = if_usb_suspend,
910 .resume = if_usb_resume,
911 };
912
913 /**
914 * @brief This function registers driver.
915 * @param add pointer to add_card callback function
916 * @param remove pointer to remove card callback function
917 * @param arg pointer to call back function parameter
918 * @return dummy success variable
919 */
920 int libertas_sbi_register(void)
921 {
922 /*
923 * API registers the Marvell USB driver
924 * to the USB system
925 */
926 usb_register(&if_usb_driver);
927
928 /* Return success to wlan layer */
929 return 0;
930 }
931
932 /**
933 * @brief This function removes usb driver.
934 * @return N/A
935 */
936 void libertas_sbi_unregister(void)
937 {
938 /* API unregisters the driver from USB subsystem */
939 usb_deregister(&if_usb_driver);
940 return;
941 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree