Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
[linux-2.6] / drivers / net / wireless / libertas_tf / if_usb.c
1 /*
2  *  Copyright (C) 2008, cozybit Inc.
3  *  Copyright (C) 2003-2006, Marvell International Ltd.
4  *
5  *  This program is free software; you can redistribute it and/or modify
6  *  it under the terms of the GNU General Public License as published by
7  *  the Free Software Foundation; either version 2 of the License, or (at
8  *  your option) any later version.
9  */
10 #include <linux/delay.h>
11 #include <linux/moduleparam.h>
12 #include <linux/firmware.h>
13 #include <linux/netdevice.h>
14 #include <linux/usb.h>
15
16 #define DRV_NAME "lbtf_usb"
17
18 #include "libertas_tf.h"
19 #include "if_usb.h"
20
21 #define MESSAGE_HEADER_LEN      4
22
23 static char *lbtf_fw_name = "lbtf_usb.bin";
24 module_param_named(fw_name, lbtf_fw_name, charp, 0644);
25
26 static struct usb_device_id if_usb_table[] = {
27         /* Enter the device signature inside */
28         { USB_DEVICE(0x1286, 0x2001) },
29         { USB_DEVICE(0x05a3, 0x8388) },
30         {}      /* Terminating entry */
31 };
32
33 MODULE_DEVICE_TABLE(usb, if_usb_table);
34
35 static void if_usb_receive(struct urb *urb);
36 static void if_usb_receive_fwload(struct urb *urb);
37 static int if_usb_prog_firmware(struct if_usb_card *cardp);
38 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
39                                uint8_t *payload, uint16_t nb);
40 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
41                         uint16_t nb, u8 data);
42 static void if_usb_free(struct if_usb_card *cardp);
43 static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
44 static int if_usb_reset_device(struct if_usb_card *cardp);
45
46 /**
47  *  if_usb_wrike_bulk_callback -  call back to handle URB status
48  *
49  *  @param urb          pointer to urb structure
50  */
51 static void if_usb_write_bulk_callback(struct urb *urb)
52 {
53         if (urb->status != 0)
54                 printk(KERN_INFO "libertastf: URB in failure status: %d\n",
55                        urb->status);
56 }
57
58 /**
59  *  if_usb_free - free tx/rx urb, skb and rx buffer
60  *
61  *  @param cardp        pointer if_usb_card
62  */
63 static void if_usb_free(struct if_usb_card *cardp)
64 {
65         /* Unlink tx & rx urb */
66         usb_kill_urb(cardp->tx_urb);
67         usb_kill_urb(cardp->rx_urb);
68         usb_kill_urb(cardp->cmd_urb);
69
70         usb_free_urb(cardp->tx_urb);
71         cardp->tx_urb = NULL;
72
73         usb_free_urb(cardp->rx_urb);
74         cardp->rx_urb = NULL;
75
76         usb_free_urb(cardp->cmd_urb);
77         cardp->cmd_urb = NULL;
78
79         kfree(cardp->ep_out_buf);
80         cardp->ep_out_buf = NULL;
81 }
82
83 static void if_usb_setup_firmware(struct lbtf_private *priv)
84 {
85         struct if_usb_card *cardp = priv->card;
86         struct cmd_ds_set_boot2_ver b2_cmd;
87
88         if_usb_submit_rx_urb(cardp);
89         b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
90         b2_cmd.action = 0;
91         b2_cmd.version = cardp->boot2_version;
92
93         if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
94                 printk(KERN_INFO "libertastf: setting boot2 version failed\n");
95 }
96
97 static void if_usb_fw_timeo(unsigned long priv)
98 {
99         struct if_usb_card *cardp = (void *)priv;
100
101         if (!cardp->fwdnldover)
102                 /* Download timed out */
103                 cardp->priv->surpriseremoved = 1;
104         wake_up(&cardp->fw_wq);
105 }
106
107 /**
108  *  if_usb_probe - sets the configuration values
109  *
110  *  @ifnum      interface number
111  *  @id         pointer to usb_device_id
112  *
113  *  Returns: 0 on success, error code on failure
114  */
115 static int if_usb_probe(struct usb_interface *intf,
116                         const struct usb_device_id *id)
117 {
118         struct usb_device *udev;
119         struct usb_host_interface *iface_desc;
120         struct usb_endpoint_descriptor *endpoint;
121         struct lbtf_private *priv;
122         struct if_usb_card *cardp;
123         int i;
124
125         udev = interface_to_usbdev(intf);
126
127         cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
128         if (!cardp)
129                 goto error;
130
131         setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
132         init_waitqueue_head(&cardp->fw_wq);
133
134         cardp->udev = udev;
135         iface_desc = intf->cur_altsetting;
136
137         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
138                 endpoint = &iface_desc->endpoint[i].desc;
139                 if (usb_endpoint_is_bulk_in(endpoint)) {
140                         cardp->ep_in_size =
141                                 le16_to_cpu(endpoint->wMaxPacketSize);
142                         cardp->ep_in = usb_endpoint_num(endpoint);
143                 } else if (usb_endpoint_is_bulk_out(endpoint)) {
144                         cardp->ep_out_size =
145                                 le16_to_cpu(endpoint->wMaxPacketSize);
146                         cardp->ep_out = usb_endpoint_num(endpoint);
147                 }
148         }
149         if (!cardp->ep_out_size || !cardp->ep_in_size)
150                 /* Endpoints not found */
151                 goto dealloc;
152
153         cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
154         if (!cardp->rx_urb)
155                 goto dealloc;
156
157         cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
158         if (!cardp->tx_urb)
159                 goto dealloc;
160
161         cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
162         if (!cardp->cmd_urb)
163                 goto dealloc;
164
165         cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
166                                     GFP_KERNEL);
167         if (!cardp->ep_out_buf)
168                 goto dealloc;
169
170         priv = lbtf_add_card(cardp, &udev->dev);
171         if (!priv)
172                 goto dealloc;
173
174         cardp->priv = priv;
175
176         priv->hw_host_to_card = if_usb_host_to_card;
177         priv->hw_prog_firmware = if_usb_prog_firmware;
178         priv->hw_reset_device = if_usb_reset_device;
179         cardp->boot2_version = udev->descriptor.bcdDevice;
180
181         usb_get_dev(udev);
182         usb_set_intfdata(intf, cardp);
183
184         return 0;
185
186 dealloc:
187         if_usb_free(cardp);
188 error:
189         return -ENOMEM;
190 }
191
192 /**
193  *  if_usb_disconnect -  free resource and cleanup
194  *
195  *  @intf       USB interface structure
196  */
197 static void if_usb_disconnect(struct usb_interface *intf)
198 {
199         struct if_usb_card *cardp = usb_get_intfdata(intf);
200         struct lbtf_private *priv = (struct lbtf_private *) cardp->priv;
201
202         if_usb_reset_device(cardp);
203
204         if (priv)
205                 lbtf_remove_card(priv);
206
207         /* Unlink and free urb */
208         if_usb_free(cardp);
209
210         usb_set_intfdata(intf, NULL);
211         usb_put_dev(interface_to_usbdev(intf));
212 }
213
214 /**
215  *  if_usb_send_fw_pkt -  This function downloads the FW
216  *
217  *  @priv       pointer to struct lbtf_private
218  *
219  *  Returns: 0
220  */
221 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
222 {
223         struct fwdata *fwdata = cardp->ep_out_buf;
224         u8 *firmware = (u8 *) cardp->fw->data;
225
226         /* If we got a CRC failure on the last block, back
227            up and retry it */
228         if (!cardp->CRC_OK) {
229                 cardp->totalbytes = cardp->fwlastblksent;
230                 cardp->fwseqnum--;
231         }
232
233         /* struct fwdata (which we sent to the card) has an
234            extra __le32 field in between the header and the data,
235            which is not in the struct fwheader in the actual
236            firmware binary. Insert the seqnum in the middle... */
237         memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
238                sizeof(struct fwheader));
239
240         cardp->fwlastblksent = cardp->totalbytes;
241         cardp->totalbytes += sizeof(struct fwheader);
242
243         memcpy(fwdata->data, &firmware[cardp->totalbytes],
244                le32_to_cpu(fwdata->hdr.datalength));
245
246         fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
247         cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
248
249         usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
250                      le32_to_cpu(fwdata->hdr.datalength), 0);
251
252         if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK))
253                 /* Host has finished FW downloading
254                  * Donwloading FW JUMP BLOCK
255                  */
256                 cardp->fwfinalblk = 1;
257
258         return 0;
259 }
260
261 static int if_usb_reset_device(struct if_usb_card *cardp)
262 {
263         struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
264         int ret;
265
266         *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
267
268         cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
269         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
270         cmd->hdr.result = cpu_to_le16(0);
271         cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
272         cmd->action = cpu_to_le16(CMD_ACT_HALT);
273         usb_tx_block(cardp, cardp->ep_out_buf,
274                      4 + sizeof(struct cmd_ds_802_11_reset), 0);
275
276         msleep(100);
277         ret = usb_reset_device(cardp->udev);
278         msleep(100);
279
280         return ret;
281 }
282 EXPORT_SYMBOL_GPL(if_usb_reset_device);
283
284 /**
285  *  usb_tx_block - transfer data to the device
286  *
287  *  @priv       pointer to struct lbtf_private
288  *  @payload    pointer to payload data
289  *  @nb         data length
290  *  @data       non-zero for data, zero for commands
291  *
292  *  Returns: 0 on success, nonzero otherwise.
293  */
294 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
295                         uint16_t nb, u8 data)
296 {
297         struct urb *urb;
298
299         /* check if device is removed */
300         if (cardp->priv->surpriseremoved)
301                 return -1;
302
303         if (data)
304                 urb = cardp->tx_urb;
305         else
306                 urb = cardp->cmd_urb;
307
308         usb_fill_bulk_urb(urb, cardp->udev,
309                           usb_sndbulkpipe(cardp->udev,
310                                           cardp->ep_out),
311                           payload, nb, if_usb_write_bulk_callback, cardp);
312
313         urb->transfer_flags |= URB_ZERO_PACKET;
314
315         if (usb_submit_urb(urb, GFP_ATOMIC))
316                 return -1;
317         return 0;
318 }
319
320 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
321                                   void (*callbackfn)(struct urb *urb))
322 {
323         struct sk_buff *skb;
324
325         skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
326         if (!skb)
327                 return -1;
328
329         cardp->rx_skb = skb;
330
331         /* Fill the receive configuration URB and initialise the Rx call back */
332         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
333                           usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
334                           (void *) (skb->tail),
335                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
336
337         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
338
339         if (usb_submit_urb(cardp->rx_urb, GFP_ATOMIC)) {
340                 kfree_skb(skb);
341                 cardp->rx_skb = NULL;
342                 return -1;
343         } else
344                 return 0;
345 }
346
347 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
348 {
349         return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
350 }
351
352 static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
353 {
354         return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
355 }
356
357 static void if_usb_receive_fwload(struct urb *urb)
358 {
359         struct if_usb_card *cardp = urb->context;
360         struct sk_buff *skb = cardp->rx_skb;
361         struct fwsyncheader *syncfwheader;
362         struct bootcmdresp bcmdresp;
363
364         if (urb->status) {
365                 kfree_skb(skb);
366                 return;
367         }
368
369         if (cardp->fwdnldover) {
370                 __le32 *tmp = (__le32 *)(skb->data);
371
372                 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
373                     tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY))
374                         /* Firmware ready event received */
375                         wake_up(&cardp->fw_wq);
376                 else
377                         if_usb_submit_rx_urb_fwload(cardp);
378                 kfree_skb(skb);
379                 return;
380         }
381         if (cardp->bootcmdresp <= 0) {
382                 memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
383
384                 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
385                         kfree_skb(skb);
386                         if_usb_submit_rx_urb_fwload(cardp);
387                         cardp->bootcmdresp = 1;
388                         /* Received valid boot command response */
389                         return;
390                 }
391                 if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
392                         if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
393                             bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
394                             bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION))
395                                 cardp->bootcmdresp = -1;
396                 } else if (bcmdresp.cmd == BOOT_CMD_FW_BY_USB &&
397                            bcmdresp.result == BOOT_CMD_RESP_OK)
398                         cardp->bootcmdresp = 1;
399
400                 kfree_skb(skb);
401                 if_usb_submit_rx_urb_fwload(cardp);
402                 return;
403         }
404
405         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
406         if (!syncfwheader) {
407                 kfree_skb(skb);
408                 return;
409         }
410
411         memcpy(syncfwheader, skb->data, sizeof(struct fwsyncheader));
412
413         if (!syncfwheader->cmd)
414                 cardp->CRC_OK = 1;
415         else
416                 cardp->CRC_OK = 0;
417         kfree_skb(skb);
418
419         /* reschedule timer for 200ms hence */
420         mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
421
422         if (cardp->fwfinalblk) {
423                 cardp->fwdnldover = 1;
424                 goto exit;
425         }
426
427         if_usb_send_fw_pkt(cardp);
428
429  exit:
430         if_usb_submit_rx_urb_fwload(cardp);
431
432         kfree(syncfwheader);
433
434         return;
435 }
436
437 #define MRVDRV_MIN_PKT_LEN      30
438
439 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
440                                        struct if_usb_card *cardp,
441                                        struct lbtf_private *priv)
442 {
443         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
444             || recvlength < MRVDRV_MIN_PKT_LEN) {
445                 kfree_skb(skb);
446                 return;
447         }
448
449         skb_put(skb, recvlength);
450         skb_pull(skb, MESSAGE_HEADER_LEN);
451         lbtf_rx(priv, skb);
452 }
453
454 static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
455                                       struct sk_buff *skb,
456                                       struct if_usb_card *cardp,
457                                       struct lbtf_private *priv)
458 {
459         if (recvlength > LBS_CMD_BUFFER_SIZE) {
460                 kfree_skb(skb);
461                 return;
462         }
463
464         if (!in_interrupt())
465                 BUG();
466
467         spin_lock(&priv->driver_lock);
468         memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
469                recvlength - MESSAGE_HEADER_LEN);
470         kfree_skb(skb);
471         lbtf_cmd_response_rx(priv);
472         spin_unlock(&priv->driver_lock);
473 }
474
475 /**
476  *  if_usb_receive - read data received from the device.
477  *
478  *  @urb                pointer to struct urb
479  */
480 static void if_usb_receive(struct urb *urb)
481 {
482         struct if_usb_card *cardp = urb->context;
483         struct sk_buff *skb = cardp->rx_skb;
484         struct lbtf_private *priv = cardp->priv;
485         int recvlength = urb->actual_length;
486         uint8_t *recvbuff = NULL;
487         uint32_t recvtype = 0;
488         __le32 *pkt = (__le32 *) skb->data;
489
490         if (recvlength) {
491                 if (urb->status) {
492                         kfree_skb(skb);
493                         goto setup_for_next;
494                 }
495
496                 recvbuff = skb->data;
497                 recvtype = le32_to_cpu(pkt[0]);
498         } else if (urb->status) {
499                 kfree_skb(skb);
500                 return;
501         }
502
503         switch (recvtype) {
504         case CMD_TYPE_DATA:
505                 process_cmdtypedata(recvlength, skb, cardp, priv);
506                 break;
507
508         case CMD_TYPE_REQUEST:
509                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
510                 break;
511
512         case CMD_TYPE_INDICATION:
513         {
514                 /* Event cause handling */
515                 u32 event_cause = le32_to_cpu(pkt[1]);
516
517                 /* Icky undocumented magic special case */
518                 if (event_cause & 0xffff0000) {
519                         u16 tmp;
520                         u8 retrycnt;
521                         u8 failure;
522
523                         tmp = event_cause >> 16;
524                         retrycnt = tmp & 0x00ff;
525                         failure = (tmp & 0xff00) >> 8;
526                         lbtf_send_tx_feedback(priv, retrycnt, failure);
527                 } else if (event_cause == LBTF_EVENT_BCN_SENT)
528                         lbtf_bcn_sent(priv);
529                 else
530                         printk(KERN_DEBUG
531                                "Unsupported notification %d received\n",
532                                event_cause);
533                 kfree_skb(skb);
534                 break;
535         }
536         default:
537                 printk(KERN_DEBUG "libertastf: unknown command type 0x%X\n",
538                              recvtype);
539                 kfree_skb(skb);
540                 break;
541         }
542
543 setup_for_next:
544         if_usb_submit_rx_urb(cardp);
545 }
546
547 /**
548  *  if_usb_host_to_card -  Download data to the device
549  *
550  *  @priv               pointer to struct lbtf_private structure
551  *  @type               type of data
552  *  @buf                pointer to data buffer
553  *  @len                number of bytes
554  *
555  *  Returns: 0 on success, nonzero otherwise
556  */
557 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
558                                uint8_t *payload, uint16_t nb)
559 {
560         struct if_usb_card *cardp = priv->card;
561         u8 data = 0;
562
563         if (type == MVMS_CMD) {
564                 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
565         } else {
566                 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
567                 data = 1;
568         }
569
570         memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
571
572         return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
573                             data);
574 }
575
576 /**
577  *  if_usb_issue_boot_command - Issue boot command to Boot2.
578  *
579  *  @ivalue   1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
580  *
581  *  Returns: 0
582  */
583 static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
584 {
585         struct bootcmd *bootcmd = cardp->ep_out_buf;
586
587         /* Prepare command */
588         bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
589         bootcmd->cmd = ivalue;
590         memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
591
592         /* Issue command */
593         usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
594
595         return 0;
596 }
597
598
599 /**
600  *  check_fwfile_format - Check the validity of Boot2/FW image.
601  *
602  *  @data       pointer to image
603  *  @totlen     image length
604  *
605  *  Returns: 0 if the image is valid, nonzero otherwise.
606  */
607 static int check_fwfile_format(const u8 *data, u32 totlen)
608 {
609         u32 bincmd, exit;
610         u32 blksize, offset, len;
611         int ret;
612
613         ret = 1;
614         exit = len = 0;
615
616         do {
617                 struct fwheader *fwh = (void *) data;
618
619                 bincmd = le32_to_cpu(fwh->dnldcmd);
620                 blksize = le32_to_cpu(fwh->datalength);
621                 switch (bincmd) {
622                 case FW_HAS_DATA_TO_RECV:
623                         offset = sizeof(struct fwheader) + blksize;
624                         data += offset;
625                         len += offset;
626                         if (len >= totlen)
627                                 exit = 1;
628                         break;
629                 case FW_HAS_LAST_BLOCK:
630                         exit = 1;
631                         ret = 0;
632                         break;
633                 default:
634                         exit = 1;
635                         break;
636                 }
637         } while (!exit);
638
639         if (ret)
640                 printk(KERN_INFO
641                        "libertastf: firmware file format check failed\n");
642         return ret;
643 }
644
645
646 static int if_usb_prog_firmware(struct if_usb_card *cardp)
647 {
648         int i = 0;
649         static int reset_count = 10;
650         int ret = 0;
651
652         ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
653         if (ret < 0) {
654                 printk(KERN_INFO "libertastf: firmware %s not found\n",
655                        lbtf_fw_name);
656                 goto done;
657         }
658
659         if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
660                 goto release_fw;
661
662 restart:
663         if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
664                 ret = -1;
665                 goto release_fw;
666         }
667
668         cardp->bootcmdresp = 0;
669         do {
670                 int j = 0;
671                 i++;
672                 /* Issue Boot command = 1, Boot from Download-FW */
673                 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
674                 /* wait for command response */
675                 do {
676                         j++;
677                         msleep_interruptible(100);
678                 } while (cardp->bootcmdresp == 0 && j < 10);
679         } while (cardp->bootcmdresp == 0 && i < 5);
680
681         if (cardp->bootcmdresp <= 0) {
682                 if (--reset_count >= 0) {
683                         if_usb_reset_device(cardp);
684                         goto restart;
685                 }
686                 return -1;
687         }
688
689         i = 0;
690
691         cardp->totalbytes = 0;
692         cardp->fwlastblksent = 0;
693         cardp->CRC_OK = 1;
694         cardp->fwdnldover = 0;
695         cardp->fwseqnum = -1;
696         cardp->totalbytes = 0;
697         cardp->fwfinalblk = 0;
698
699         /* Send the first firmware packet... */
700         if_usb_send_fw_pkt(cardp);
701
702         /* ... and wait for the process to complete */
703         wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved ||
704                                                cardp->fwdnldover);
705
706         del_timer_sync(&cardp->fw_timeout);
707         usb_kill_urb(cardp->rx_urb);
708
709         if (!cardp->fwdnldover) {
710                 printk(KERN_INFO "libertastf: failed to load fw,"
711                                  " resetting device!\n");
712                 if (--reset_count >= 0) {
713                         if_usb_reset_device(cardp);
714                         goto restart;
715                 }
716
717                 printk(KERN_INFO "libertastf: fw download failure\n");
718                 ret = -1;
719                 goto release_fw;
720         }
721
722         cardp->priv->fw_ready = 1;
723
724  release_fw:
725         release_firmware(cardp->fw);
726         cardp->fw = NULL;
727
728         if_usb_setup_firmware(cardp->priv);
729
730  done:
731         return ret;
732 }
733 EXPORT_SYMBOL_GPL(if_usb_prog_firmware);
734
735
736 #define if_usb_suspend NULL
737 #define if_usb_resume NULL
738
739 static struct usb_driver if_usb_driver = {
740         .name = DRV_NAME,
741         .probe = if_usb_probe,
742         .disconnect = if_usb_disconnect,
743         .id_table = if_usb_table,
744         .suspend = if_usb_suspend,
745         .resume = if_usb_resume,
746 };
747
748 static int __init if_usb_init_module(void)
749 {
750         int ret = 0;
751
752         ret = usb_register(&if_usb_driver);
753         return ret;
754 }
755
756 static void __exit if_usb_exit_module(void)
757 {
758         usb_deregister(&if_usb_driver);
759 }
760
761 module_init(if_usb_init_module);
762 module_exit(if_usb_exit_module);
763
764 MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
765 MODULE_AUTHOR("Cozybit Inc.");
766 MODULE_LICENSE("GPL");