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[PATCH] libertas: split wlan_add_card()
[linux-2.6/mini2440.git] / drivers / net / wireless / libertas / if_usb.c
blobe4caf3e4b35232b84846eacb4565cefa59560e84
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 }
66
67 return;
68 }
69
70 /**
71 * @brief free tx/rx urb, skb and rx buffer
72 * @param cardp pointer usb_card_rec
73 * @return N/A
74 */
75 void if_usb_free(struct usb_card_rec *cardp)
76 {
77 lbs_deb_enter(LBS_DEB_USB);
78
79 /* Unlink tx & rx urb */
80 usb_kill_urb(cardp->tx_urb);
81 usb_kill_urb(cardp->rx_urb);
82
83 usb_free_urb(cardp->tx_urb);
84 cardp->tx_urb = NULL;
85
86 usb_free_urb(cardp->rx_urb);
87 cardp->rx_urb = NULL;
88
89 kfree(cardp->bulk_out_buffer);
90 cardp->bulk_out_buffer = NULL;
91
92 lbs_deb_leave(LBS_DEB_USB);
93 }
94
95 /**
96 * @brief sets the configuration values
97 * @param ifnum interface number
98 * @param id pointer to usb_device_id
99 * @return 0 on success, error code on failure
100 */
101 static int if_usb_probe(struct usb_interface *intf,
102 const struct usb_device_id *id)
103 {
104 struct usb_device *udev;
105 struct usb_host_interface *iface_desc;
106 struct usb_endpoint_descriptor *endpoint;
107 wlan_private *priv;
108 struct usb_card_rec *usb_cardp;
109 int i;
110
111 udev = interface_to_usbdev(intf);
112
113 usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
114 if (!usb_cardp) {
115 lbs_pr_err("Out of memory allocating private data.\n");
116 goto error;
117 }
118
119 usb_cardp->udev = udev;
120 iface_desc = intf->cur_altsetting;
121
122 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
123 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
124 udev->descriptor.bcdUSB,
125 udev->descriptor.bDeviceClass,
126 udev->descriptor.bDeviceSubClass,
127 udev->descriptor.bDeviceProtocol);
128
129 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
130 endpoint = &iface_desc->endpoint[i].desc;
131 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
132 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
133 USB_ENDPOINT_XFER_BULK)) {
134 /* we found a bulk in endpoint */
135 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
136 endpoint->wMaxPacketSize);
137 if (!
138 (usb_cardp->rx_urb =
139 usb_alloc_urb(0, GFP_KERNEL))) {
140 lbs_deb_usbd(&udev->dev,
141 "Rx URB allocation failed\n");
142 goto dealloc;
143 }
144 usb_cardp->rx_urb_recall = 0;
145
146 usb_cardp->bulk_in_size =
147 endpoint->wMaxPacketSize;
148 usb_cardp->bulk_in_endpointAddr =
149 (endpoint->
150 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
151 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
152 endpoint->bEndpointAddress);
153 }
154
155 if (((endpoint->
156 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
157 USB_DIR_OUT)
158 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
159 USB_ENDPOINT_XFER_BULK)) {
160 /* We found bulk out endpoint */
161 if (!
162 (usb_cardp->tx_urb =
163 usb_alloc_urb(0, GFP_KERNEL))) {
164 lbs_deb_usbd(&udev->dev,
165 "Tx URB allocation failed\n");
166 goto dealloc;
167 }
168
169 usb_cardp->bulk_out_size =
170 endpoint->wMaxPacketSize;
171 lbs_deb_usbd(&udev->dev,
172 "Bulk out size is %d\n",
173 endpoint->wMaxPacketSize);
174 usb_cardp->bulk_out_endpointAddr =
175 endpoint->bEndpointAddress;
176 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
177 endpoint->bEndpointAddress);
178 usb_cardp->bulk_out_buffer =
179 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
180 GFP_KERNEL);
181
182 if (!usb_cardp->bulk_out_buffer) {
183 lbs_deb_usbd(&udev->dev,
184 "Could not allocate buffer\n");
185 goto dealloc;
186 }
187 }
188 }
189
190
191 /* At this point wlan_add_card() will be called. Don't worry
192 * about keeping pwlanpriv around since it will be set on our
193 * usb device data in -> add() -> libertas_sbi_register_dev().
194 */
195 if (!(priv = wlan_add_card(usb_cardp)))
196 goto dealloc;
197
198 if (libertas_activate_card(priv))
199 goto dealloc;
200
201 if (libertas_found < MAX_DEVS) {
202 libertas_devs[libertas_found] = priv->wlan_dev.netdev;
203 libertas_found++;
204 }
205
206 if (wlan_add_mesh(priv))
207 goto dealloc;
208
209 usb_get_dev(udev);
210 usb_set_intfdata(intf, usb_cardp);
211
212 /*
213 * return card structure, which can be got back in the
214 * diconnect function as the ptr
215 * argument.
216 */
217 return 0;
218
219 dealloc:
220 if_usb_free(usb_cardp);
221
222 error:
223 return -ENOMEM;
224 }
225
226 /**
227 * @brief free resource and cleanup
228 * @param udev pointer to usb_device
229 * @param ptr pointer to usb_cardp
230 * @return N/A
231 */
232 static void if_usb_disconnect(struct usb_interface *intf)
233 {
234 struct usb_card_rec *cardp = usb_get_intfdata(intf);
235 wlan_private *priv = (wlan_private *) cardp->priv;
236 wlan_adapter *adapter = NULL;
237 int i;
238
239 adapter = priv->adapter;
240
241 /*
242 * Update Surprise removed to TRUE
243 */
244 adapter->surpriseremoved = 1;
245
246 for (i = 0; i<libertas_found; i++) {
247 if (libertas_devs[i]==priv->wlan_dev.netdev) {
248 libertas_devs[i] = libertas_devs[--libertas_found];
249 libertas_devs[libertas_found] = NULL ;
250 break;
251 }
252 }
253
254 /* card is removed and we can call wlan_remove_card */
255 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
256 wlan_remove_mesh(priv);
257 wlan_remove_card(priv);
258
259 /* Unlink and free urb */
260 if_usb_free(cardp);
261
262 usb_set_intfdata(intf, NULL);
263 usb_put_dev(interface_to_usbdev(intf));
264
265 return;
266 }
267
268 /**
269 * @brief This function download FW
270 * @param priv pointer to wlan_private
271 * @return 0
272 */
273 static int if_prog_firmware(wlan_private * priv)
274 {
275 struct usb_card_rec *cardp = priv->wlan_dev.card;
276 struct FWData *fwdata;
277 struct fwheader *fwheader;
278 u8 *firmware = priv->firmware->data;
279
280 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
281
282 if (!fwdata)
283 return -1;
284
285 fwheader = &fwdata->fwheader;
286
287 if (!cardp->CRC_OK) {
288 cardp->totalbytes = cardp->fwlastblksent;
289 cardp->fwseqnum = cardp->lastseqnum - 1;
290 }
291
292 /*
293 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
294 cardp->totalbytes);
295 */
296
297 memcpy(fwheader, &firmware[cardp->totalbytes],
298 sizeof(struct fwheader));
299
300 cardp->fwlastblksent = cardp->totalbytes;
301 cardp->totalbytes += sizeof(struct fwheader);
302
303 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
304 memcpy(fwdata->data, &firmware[cardp->totalbytes],
305 fwdata->fwheader.datalength);
306
307 /*
308 lbs_deb_usbd(&cardp->udev->dev,
309 "Data length = %d\n", fwdata->fwheader.datalength);
310 */
311
312 cardp->fwseqnum = cardp->fwseqnum + 1;
313
314 fwdata->seqnum = cardp->fwseqnum;
315 cardp->lastseqnum = fwdata->seqnum;
316 cardp->totalbytes += fwdata->fwheader.datalength;
317
318 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
319 /*
320 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
321 lbs_deb_usbd(&cardp->udev->dev,
322 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
323 cardp->totalbytes);
324 */
325 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
326 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
327
328 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
329 /*
330 lbs_deb_usbd(&cardp->udev->dev,
331 "Host has finished FW downloading\n");
332 lbs_deb_usbd(&cardp->udev->dev,
333 "Donwloading FW JUMP BLOCK\n");
334 */
335 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
336 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
337 cardp->fwfinalblk = 1;
338 }
339
340 /*
341 lbs_deb_usbd(&cardp->udev->dev,
342 "The firmware download is done size is %d\n",
343 cardp->totalbytes);
344 */
345
346 kfree(fwdata);
347
348 return 0;
349 }
350
351 static int libertas_do_reset(wlan_private *priv)
352 {
353 int ret;
354 struct usb_card_rec *cardp = priv->wlan_dev.card;
355
356 lbs_deb_enter(LBS_DEB_USB);
357
358 ret = usb_reset_device(cardp->udev);
359 if (!ret) {
360 msleep(10);
361 reset_device(priv);
362 msleep(10);
363 }
364
365 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
366
367 return ret;
368 }
369
370 /**
371 * @brief This function transfer the data to the device.
372 * @param priv pointer to wlan_private
373 * @param payload pointer to payload data
374 * @param nb data length
375 * @return 0 or -1
376 */
377 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
378 {
379 /* pointer to card structure */
380 struct usb_card_rec *cardp = priv->wlan_dev.card;
381 int ret = -1;
382
383 /* check if device is removed */
384 if (priv->adapter->surpriseremoved) {
385 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
386 goto tx_ret;
387 }
388
389 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
390 usb_sndbulkpipe(cardp->udev,
391 cardp->bulk_out_endpointAddr),
392 payload, nb, if_usb_write_bulk_callback, priv);
393
394 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
395
396 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
397 /* transfer failed */
398 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
399 ret = -1;
400 } else {
401 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
402 ret = 0;
403 }
404
405 tx_ret:
406 return ret;
407 }
408
409 static int __if_usb_submit_rx_urb(wlan_private * priv,
410 void (*callbackfn)
411 (struct urb *urb))
412 {
413 struct usb_card_rec *cardp = priv->wlan_dev.card;
414 struct sk_buff *skb;
415 struct read_cb_info *rinfo = &cardp->rinfo;
416 int ret = -1;
417
418 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
419 lbs_pr_err("No free skb\n");
420 goto rx_ret;
421 }
422
423 rinfo->skb = skb;
424
425 /* Fill the receive configuration URB and initialise the Rx call back */
426 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
427 usb_rcvbulkpipe(cardp->udev,
428 cardp->bulk_in_endpointAddr),
429 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
430 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
431 rinfo);
432
433 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
434
435 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
436 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
437 /* handle failure conditions */
438 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
439 ret = -1;
440 } else {
441 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
442 ret = 0;
443 }
444
445 rx_ret:
446 return ret;
447 }
448
449 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
450 {
451 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
452 }
453
454 static inline int if_usb_submit_rx_urb(wlan_private * priv)
455 {
456 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
457 }
458
459 static void if_usb_receive_fwload(struct urb *urb)
460 {
461 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
462 wlan_private *priv = rinfo->priv;
463 struct sk_buff *skb = rinfo->skb;
464 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
465 struct fwsyncheader *syncfwheader;
466 struct bootcmdrespStr bootcmdresp;
467
468 if (urb->status) {
469 lbs_deb_usbd(&cardp->udev->dev,
470 "URB status is failed during fw load\n");
471 kfree_skb(skb);
472 return;
473 }
474
475 if (cardp->bootcmdresp == 0) {
476 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
477 sizeof(bootcmdresp));
478 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
479 kfree_skb(skb);
480 if_usb_submit_rx_urb_fwload(priv);
481 cardp->bootcmdresp = 1;
482 lbs_deb_usbd(&cardp->udev->dev,
483 "Received valid boot command response\n");
484 return;
485 }
486 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
487 lbs_pr_info(
488 "boot cmd response wrong magic number (0x%x)\n",
489 bootcmdresp.u32magicnumber);
490 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
491 lbs_pr_info(
492 "boot cmd response cmd_tag error (%d)\n",
493 bootcmdresp.u8cmd_tag);
494 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
495 lbs_pr_info(
496 "boot cmd response result error (%d)\n",
497 bootcmdresp.u8result);
498 } else {
499 cardp->bootcmdresp = 1;
500 lbs_deb_usbd(&cardp->udev->dev,
501 "Received valid boot command response\n");
502 }
503 kfree_skb(skb);
504 if_usb_submit_rx_urb_fwload(priv);
505 return;
506 }
507
508 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
509 if (!syncfwheader) {
510 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
511 kfree_skb(skb);
512 return;
513 }
514
515 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
516 sizeof(struct fwsyncheader));
517
518 if (!syncfwheader->cmd) {
519 /*
520 lbs_deb_usbd(&cardp->udev->dev,
521 "FW received Blk with correct CRC\n");
522 lbs_deb_usbd(&cardp->udev->dev,
523 "FW received Blk seqnum = %d\n",
524 syncfwheader->seqnum);
525 */
526 cardp->CRC_OK = 1;
527 } else {
528 lbs_deb_usbd(&cardp->udev->dev,
529 "FW received Blk with CRC error\n");
530 cardp->CRC_OK = 0;
531 }
532
533 kfree_skb(skb);
534
535 if (cardp->fwfinalblk) {
536 cardp->fwdnldover = 1;
537 goto exit;
538 }
539
540 if_prog_firmware(priv);
541
542 if_usb_submit_rx_urb_fwload(priv);
543 exit:
544 kfree(syncfwheader);
545
546 return;
547
548 }
549
550 #define MRVDRV_MIN_PKT_LEN 30
551
552 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
553 struct usb_card_rec *cardp,
554 wlan_private *priv)
555 {
556 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
557 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
558 lbs_deb_usbd(&cardp->udev->dev,
559 "Packet length is Invalid\n");
560 kfree_skb(skb);
561 return;
562 }
563
564 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
565 skb_put(skb, recvlength);
566 skb_pull(skb, MESSAGE_HEADER_LEN);
567 libertas_process_rxed_packet(priv, skb);
568 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
569 }
570
571 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
572 struct sk_buff *skb,
573 struct usb_card_rec *cardp,
574 wlan_private *priv)
575 {
576 u8 *cmdbuf;
577 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
578 lbs_deb_usbd(&cardp->udev->dev,
579 "The receive buffer is too large\n");
580 kfree_skb(skb);
581 return;
582 }
583
584 if (!in_interrupt())
585 BUG();
586
587 spin_lock(&priv->adapter->driver_lock);
588 /* take care of cur_cmd = NULL case by reading the
589 * data to clear the interrupt */
590 if (!priv->adapter->cur_cmd) {
591 cmdbuf = priv->wlan_dev.upld_buf;
592 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
593 } else
594 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
595
596 cardp->usb_int_cause |= his_cmdupldrdy;
597 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
598 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
599 priv->wlan_dev.upld_len);
600
601 kfree_skb(skb);
602 libertas_interrupt(priv->wlan_dev.netdev);
603 spin_unlock(&priv->adapter->driver_lock);
604
605 lbs_deb_usbd(&cardp->udev->dev,
606 "Wake up main thread to handle cmd response\n");
607
608 return;
609 }
610
611 /**
612 * @brief This function reads of the packet into the upload buff,
613 * wake up the main thread and initialise the Rx callack.
614 *
615 * @param urb pointer to struct urb
616 * @return N/A
617 */
618 static void if_usb_receive(struct urb *urb)
619 {
620 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
621 wlan_private *priv = rinfo->priv;
622 struct sk_buff *skb = rinfo->skb;
623 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
624
625 int recvlength = urb->actual_length;
626 u8 *recvbuff = NULL;
627 u32 recvtype;
628
629 lbs_deb_enter(LBS_DEB_USB);
630
631 if (recvlength) {
632 if (urb->status) {
633 lbs_deb_usbd(&cardp->udev->dev,
634 "URB status is failed\n");
635 kfree_skb(skb);
636 goto setup_for_next;
637 }
638
639 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
640 memcpy(&recvtype, recvbuff, sizeof(u32));
641 lbs_deb_usbd(&cardp->udev->dev,
642 "Recv length = 0x%x\n", recvlength);
643 lbs_deb_usbd(&cardp->udev->dev,
644 "Receive type = 0x%X\n", recvtype);
645 recvtype = le32_to_cpu(recvtype);
646 lbs_deb_usbd(&cardp->udev->dev,
647 "Receive type after = 0x%X\n", recvtype);
648 } else if (urb->status)
649 goto rx_exit;
650
651
652 switch (recvtype) {
653 case CMD_TYPE_DATA:
654 process_cmdtypedata(recvlength, skb, cardp, priv);
655 break;
656
657 case CMD_TYPE_REQUEST:
658 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
659 break;
660
661 case CMD_TYPE_INDICATION:
662 /* Event cause handling */
663 spin_lock(&priv->adapter->driver_lock);
664 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
665 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
666 cardp->usb_event_cause);
667 if (cardp->usb_event_cause & 0xffff0000) {
668 libertas_send_tx_feedback(priv);
669 spin_unlock(&priv->adapter->driver_lock);
670 break;
671 }
672 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
673 cardp->usb_int_cause |= his_cardevent;
674 kfree_skb(skb);
675 libertas_interrupt(priv->wlan_dev.netdev);
676 spin_unlock(&priv->adapter->driver_lock);
677 goto rx_exit;
678 default:
679 kfree_skb(skb);
680 break;
681 }
682
683 setup_for_next:
684 if_usb_submit_rx_urb(priv);
685 rx_exit:
686 lbs_deb_leave(LBS_DEB_USB);
687 }
688
689 /**
690 * @brief This function downloads data to FW
691 * @param priv pointer to wlan_private structure
692 * @param type type of data
693 * @param buf pointer to data buffer
694 * @param len number of bytes
695 * @return 0 or -1
696 */
697 int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
698 {
699 int ret = -1;
700 u32 tmp;
701 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
702
703 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
704 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
705
706 if (type == MVMS_CMD) {
707 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
708 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
709 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
710 MESSAGE_HEADER_LEN);
711
712 } else {
713 tmp = cpu_to_le32(CMD_TYPE_DATA);
714 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
715 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
716 MESSAGE_HEADER_LEN);
717 }
718
719 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
720
721 ret =
722 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
723
724 return ret;
725 }
726
727 /* called with adapter->driver_lock held */
728 int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
729 {
730 struct usb_card_rec *cardp = priv->wlan_dev.card;
731
732 *ireg = cardp->usb_int_cause;
733 cardp->usb_int_cause = 0;
734
735 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
736
737 return 0;
738 }
739
740 int libertas_sbi_read_event_cause(wlan_private * priv)
741 {
742 struct usb_card_rec *cardp = priv->wlan_dev.card;
743 priv->adapter->eventcause = cardp->usb_event_cause;
744 /* Re-submit rx urb here to avoid event lost issue */
745 if_usb_submit_rx_urb(priv);
746 return 0;
747 }
748
749 static int reset_device(wlan_private *priv)
750 {
751 int ret;
752
753 lbs_deb_enter(LBS_DEB_USB);
754 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
755 cmd_act_halt, 0, 0, NULL);
756 msleep_interruptible(10);
757
758 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
759 return ret;
760 }
761
762 int libertas_sbi_unregister_dev(wlan_private * priv)
763 {
764 int ret = 0;
765
766 /* Need to send a Reset command to device before USB resources freed
767 * and wlan_remove_card() called, then device can handle FW download
768 * again.
769 */
770 if (priv)
771 reset_device(priv);
772
773 return ret;
774 }
775
776
777 /**
778 * @brief This function register usb device and initialize parameter
779 * @param priv pointer to wlan_private
780 * @return 0 or -1
781 */
782 int libertas_sbi_register_dev(wlan_private * priv)
783 {
784 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
785
786 lbs_deb_enter(LBS_DEB_USB);
787
788 cardp->priv = priv;
789 cardp->eth_dev = priv->wlan_dev.netdev;
790 priv->hotplug_device = &(cardp->udev->dev);
791
792 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
793
794 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
795 cardp->udev);
796
797 lbs_deb_leave(LBS_DEB_USB);
798 return 0;
799 }
800
801
802
803 int libertas_sbi_prog_firmware(wlan_private * priv)
804 {
805 struct usb_card_rec *cardp = priv->wlan_dev.card;
806 int i = 0;
807 static int reset_count = 10;
808 int ret = 0;
809
810 lbs_deb_enter(LBS_DEB_USB);
811
812 cardp->rinfo.priv = priv;
813
814 restart:
815 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
816 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
817 ret = -1;
818 goto done;
819 }
820
821 cardp->bootcmdresp = 0;
822 do {
823 int j = 0;
824 i++;
825 /* Issue Boot command = 1, Boot from Download-FW */
826 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
827 /* wait for command response */
828 do {
829 j++;
830 msleep_interruptible(100);
831 } while (cardp->bootcmdresp == 0 && j < 10);
832 } while (cardp->bootcmdresp == 0 && i < 5);
833
834 if (cardp->bootcmdresp == 0) {
835 if (--reset_count >= 0) {
836 libertas_do_reset(priv);
837 goto restart;
838 }
839 return -1;
840 }
841
842 i = 0;
843 priv->adapter->fw_ready = 0;
844
845 cardp->totalbytes = 0;
846 cardp->fwlastblksent = 0;
847 cardp->CRC_OK = 1;
848 cardp->fwdnldover = 0;
849 cardp->fwseqnum = -1;
850 cardp->totalbytes = 0;
851 cardp->fwfinalblk = 0;
852
853 if_prog_firmware(priv);
854
855 do {
856 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
857 i++;
858 msleep_interruptible(100);
859 if (priv->adapter->surpriseremoved || i >= 20)
860 break;
861 } while (!cardp->fwdnldover);
862
863 if (!cardp->fwdnldover) {
864 lbs_pr_info("failed to load fw, resetting device!\n");
865 if (--reset_count >= 0) {
866 libertas_do_reset(priv);
867 goto restart;
868 }
869
870 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
871 ret = -1;
872 goto done;
873 }
874
875 if_usb_submit_rx_urb(priv);
876
877 /* Delay 200 ms to waiting for the FW ready */
878 msleep_interruptible(200);
879
880 priv->adapter->fw_ready = 1;
881
882 done:
883 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
884 return ret;
885 }
886
887 #ifdef CONFIG_PM
888 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
889 {
890 struct usb_card_rec *cardp = usb_get_intfdata(intf);
891 wlan_private *priv = cardp->priv;
892
893 lbs_deb_enter(LBS_DEB_USB);
894
895 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
896 return -1;
897
898 netif_device_detach(cardp->eth_dev);
899
900 /* Unlink tx & rx urb */
901 usb_kill_urb(cardp->tx_urb);
902 usb_kill_urb(cardp->rx_urb);
903
904 cardp->rx_urb_recall = 1;
905
906 lbs_deb_leave(LBS_DEB_USB);
907 return 0;
908 }
909
910 static int if_usb_resume(struct usb_interface *intf)
911 {
912 struct usb_card_rec *cardp = usb_get_intfdata(intf);
913
914 lbs_deb_enter(LBS_DEB_USB);
915
916 cardp->rx_urb_recall = 0;
917
918 if_usb_submit_rx_urb(cardp->priv);
919
920 netif_device_attach(cardp->eth_dev);
921
922 lbs_deb_leave(LBS_DEB_USB);
923 return 0;
924 }
925 #else
926 #define if_usb_suspend NULL
927 #define if_usb_resume NULL
928 #endif
929
930 static struct usb_driver if_usb_driver = {
931 /* driver name */
932 .name = usbdriver_name,
933 /* probe function name */
934 .probe = if_usb_probe,
935 /* disconnect function name */
936 .disconnect = if_usb_disconnect,
937 /* device signature table */
938 .id_table = if_usb_table,
939 .suspend = if_usb_suspend,
940 .resume = if_usb_resume,
941 };
942
943 /**
944 * @brief This function registers driver.
945 * @param add pointer to add_card callback function
946 * @param remove pointer to remove card callback function
947 * @param arg pointer to call back function parameter
948 * @return dummy success variable
949 */
950 int libertas_sbi_register(void)
951 {
952 /*
953 * API registers the Marvell USB driver
954 * to the USB system
955 */
956 usb_register(&if_usb_driver);
957
958 /* Return success to wlan layer */
959 return 0;
960 }
961
962 /**
963 * @brief This function removes usb driver.
964 * @return N/A
965 */
966 void libertas_sbi_unregister(void)
967 {
968 int i;
969
970 for (i = 0; i<libertas_found; i++) {
971 wlan_private *priv = libertas_devs[i]->priv;
972 reset_device(priv);
973 }
974
975 /* API unregisters the driver from USB subsystem */
976 usb_deregister(&if_usb_driver);
977 }
Support for the Chinese Samsung S3C2440 based development boards