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[PATCH] libertas: send reset command directly instead of calling libertas_reset_device
[linux-2.6/mini2440.git] / drivers / net / wireless / libertas / if_usb.c
blob8a3c70e5407565648c345be6dad970539af700c9
1 /**
2 * This file contains functions used in USB interface module.
3 */
4 #include <linux/delay.h>
5 #include <linux/moduleparam.h>
6 #include <linux/firmware.h>
7 #include <linux/netdevice.h>
8 #include <linux/list.h>
9 #include <linux/usb.h>
10
11 #define DRV_NAME "usb8xxx"
12
13 #include "host.h"
14 #include "decl.h"
15 #include "defs.h"
16 #include "dev.h"
17 #include "if_usb.h"
18 #include "decl.h"
19
20 #define MESSAGE_HEADER_LEN 4
21
22 static const char usbdriver_name[] = "usb8xxx";
23 static u8 *default_fw_name = "usb8388.bin";
24
25 static char *libertas_fw_name = NULL;
26 module_param_named(fw_name, libertas_fw_name, charp, 0644);
27
28 /*
29 * We need to send a RESET command to all USB devices before
30 * we tear down the USB connection. Otherwise we would not
31 * be able to re-init device the device if the module gets
32 * loaded again. This is a list of all initialized USB devices,
33 * for the reset code see if_usb_reset_device()
34 */
35 static LIST_HEAD(usb_devices);
36
37 static struct usb_device_id if_usb_table[] = {
38 /* Enter the device signature inside */
39 { USB_DEVICE(0x1286, 0x2001) },
40 { USB_DEVICE(0x05a3, 0x8388) },
41 {} /* Terminating entry */
42 };
43
44 MODULE_DEVICE_TABLE(usb, if_usb_table);
45
46 static void if_usb_receive(struct urb *urb);
47 static void if_usb_receive_fwload(struct urb *urb);
48 static int if_usb_prog_firmware(struct usb_card_rec *cardp);
49 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
50 static int if_usb_get_int_status(wlan_private * priv, u8 *);
51 static int if_usb_read_event_cause(wlan_private *);
52 static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb);
53 static void if_usb_free(struct usb_card_rec *cardp);
54 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp);
55 static int if_usb_reset_device(struct usb_card_rec *cardp);
56
57 /**
58 * @brief call back function to handle the status of the URB
59 * @param urb pointer to urb structure
60 * @return N/A
61 */
62 static void if_usb_write_bulk_callback(struct urb *urb)
63 {
64 struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context;
65
66 /* handle the transmission complete validations */
67
68 if (urb->status == 0) {
69 wlan_private *priv = cardp->priv;
70
71 /*
72 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
73 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
74 urb->actual_length);
75 */
76
77 /* Used for both firmware TX and regular TX. priv isn't
78 * valid at firmware load time.
79 */
80 if (priv) {
81 wlan_adapter *adapter = priv->adapter;
82 struct net_device *dev = priv->dev;
83
84 priv->dnld_sent = DNLD_RES_RECEIVED;
85
86 /* Wake main thread if commands are pending */
87 if (!adapter->cur_cmd)
88 wake_up_interruptible(&priv->waitq);
89
90 if ((adapter->connect_status == LIBERTAS_CONNECTED)) {
91 netif_wake_queue(dev);
92 netif_wake_queue(priv->mesh_dev);
93 }
94 }
95 } else {
96 /* print the failure status number for debug */
97 lbs_pr_info("URB in failure status: %d\n", urb->status);
98 }
99
100 return;
101 }
102
103 /**
104 * @brief free tx/rx urb, skb and rx buffer
105 * @param cardp pointer usb_card_rec
106 * @return N/A
107 */
108 static void if_usb_free(struct usb_card_rec *cardp)
109 {
110 lbs_deb_enter(LBS_DEB_USB);
111
112 /* Unlink tx & rx urb */
113 usb_kill_urb(cardp->tx_urb);
114 usb_kill_urb(cardp->rx_urb);
115
116 usb_free_urb(cardp->tx_urb);
117 cardp->tx_urb = NULL;
118
119 usb_free_urb(cardp->rx_urb);
120 cardp->rx_urb = NULL;
121
122 kfree(cardp->bulk_out_buffer);
123 cardp->bulk_out_buffer = NULL;
124
125 lbs_deb_leave(LBS_DEB_USB);
126 }
127
128 /**
129 * @brief sets the configuration values
130 * @param ifnum interface number
131 * @param id pointer to usb_device_id
132 * @return 0 on success, error code on failure
133 */
134 static int if_usb_probe(struct usb_interface *intf,
135 const struct usb_device_id *id)
136 {
137 struct usb_device *udev;
138 struct usb_host_interface *iface_desc;
139 struct usb_endpoint_descriptor *endpoint;
140 wlan_private *priv;
141 struct usb_card_rec *cardp;
142 int i;
143
144 udev = interface_to_usbdev(intf);
145
146 cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
147 if (!cardp) {
148 lbs_pr_err("Out of memory allocating private data.\n");
149 goto error;
150 }
151
152 cardp->udev = udev;
153 iface_desc = intf->cur_altsetting;
154
155 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
156 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
157 le16_to_cpu(udev->descriptor.bcdUSB),
158 udev->descriptor.bDeviceClass,
159 udev->descriptor.bDeviceSubClass,
160 udev->descriptor.bDeviceProtocol);
161
162 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
163 endpoint = &iface_desc->endpoint[i].desc;
164 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
165 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
166 USB_ENDPOINT_XFER_BULK)) {
167 /* we found a bulk in endpoint */
168 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
169 le16_to_cpu(endpoint->wMaxPacketSize));
170 if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
171 lbs_deb_usbd(&udev->dev,
172 "Rx URB allocation failed\n");
173 goto dealloc;
174 }
175 cardp->rx_urb_recall = 0;
176
177 cardp->bulk_in_size =
178 le16_to_cpu(endpoint->wMaxPacketSize);
179 cardp->bulk_in_endpointAddr =
180 (endpoint->
181 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
182 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
183 endpoint->bEndpointAddress);
184 }
185
186 if (((endpoint->
187 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
188 USB_DIR_OUT)
189 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
190 USB_ENDPOINT_XFER_BULK)) {
191 /* We found bulk out endpoint */
192 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
193 lbs_deb_usbd(&udev->dev,
194 "Tx URB allocation failed\n");
195 goto dealloc;
196 }
197
198 cardp->bulk_out_size =
199 le16_to_cpu(endpoint->wMaxPacketSize);
200 lbs_deb_usbd(&udev->dev,
201 "Bulk out size is %d\n",
202 le16_to_cpu(endpoint->wMaxPacketSize));
203 cardp->bulk_out_endpointAddr =
204 endpoint->bEndpointAddress;
205 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
206 endpoint->bEndpointAddress);
207 cardp->bulk_out_buffer =
208 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
209 GFP_KERNEL);
210
211 if (!cardp->bulk_out_buffer) {
212 lbs_deb_usbd(&udev->dev,
213 "Could not allocate buffer\n");
214 goto dealloc;
215 }
216 }
217 }
218
219 /* Upload firmware */
220 cardp->rinfo.cardp = cardp;
221 if (if_usb_prog_firmware(cardp)) {
222 lbs_deb_usbd(&udev->dev, "FW upload failed");
223 goto err_prog_firmware;
224 }
225
226 if (!(priv = libertas_add_card(cardp, &udev->dev)))
227 goto err_prog_firmware;
228
229 cardp->priv = priv;
230
231 if (libertas_add_mesh(priv, &udev->dev))
232 goto err_add_mesh;
233
234 cardp->eth_dev = priv->dev;
235
236 priv->hw_host_to_card = if_usb_host_to_card;
237 priv->hw_get_int_status = if_usb_get_int_status;
238 priv->hw_read_event_cause = if_usb_read_event_cause;
239 priv->boot2_version = udev->descriptor.bcdDevice;
240
241 /* Delay 200 ms to waiting for the FW ready */
242 if_usb_submit_rx_urb(cardp);
243 msleep_interruptible(200);
244 priv->adapter->fw_ready = 1;
245
246 if (libertas_start_card(priv))
247 goto err_start_card;
248
249 list_add_tail(&cardp->list, &usb_devices);
250
251 usb_get_dev(udev);
252 usb_set_intfdata(intf, cardp);
253
254 return 0;
255
256 err_start_card:
257 libertas_remove_mesh(priv);
258 err_add_mesh:
259 libertas_remove_card(priv);
260 err_prog_firmware:
261 if_usb_reset_device(cardp);
262 dealloc:
263 if_usb_free(cardp);
264
265 error:
266 return -ENOMEM;
267 }
268
269 /**
270 * @brief free resource and cleanup
271 * @param intf USB interface structure
272 * @return N/A
273 */
274 static void if_usb_disconnect(struct usb_interface *intf)
275 {
276 struct usb_card_rec *cardp = usb_get_intfdata(intf);
277 wlan_private *priv = (wlan_private *) cardp->priv;
278
279 lbs_deb_enter(LBS_DEB_MAIN);
280
281 /* Update Surprise removed to TRUE */
282 cardp->surprise_removed = 1;
283
284 list_del(&cardp->list);
285
286 if (priv) {
287 wlan_adapter *adapter = priv->adapter;
288
289 adapter->surpriseremoved = 1;
290 libertas_stop_card(priv);
291 libertas_remove_mesh(priv);
292 libertas_remove_card(priv);
293 }
294
295 /* Unlink and free urb */
296 if_usb_free(cardp);
297
298 usb_set_intfdata(intf, NULL);
299 usb_put_dev(interface_to_usbdev(intf));
300
301 lbs_deb_leave(LBS_DEB_MAIN);
302 }
303
304 /**
305 * @brief This function download FW
306 * @param priv pointer to wlan_private
307 * @return 0
308 */
309 static int if_prog_firmware(struct usb_card_rec *cardp)
310 {
311 struct FWData *fwdata;
312 struct fwheader *fwheader;
313 u8 *firmware = cardp->fw->data;
314
315 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
316
317 if (!fwdata)
318 return -1;
319
320 fwheader = &fwdata->fwheader;
321
322 if (!cardp->CRC_OK) {
323 cardp->totalbytes = cardp->fwlastblksent;
324 cardp->fwseqnum = cardp->lastseqnum - 1;
325 }
326
327 /*
328 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
329 cardp->totalbytes);
330 */
331
332 memcpy(fwheader, &firmware[cardp->totalbytes],
333 sizeof(struct fwheader));
334
335 cardp->fwlastblksent = cardp->totalbytes;
336 cardp->totalbytes += sizeof(struct fwheader);
337
338 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
339 memcpy(fwdata->data, &firmware[cardp->totalbytes],
340 le32_to_cpu(fwdata->fwheader.datalength));
341
342 /*
343 lbs_deb_usbd(&cardp->udev->dev,
344 "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
345 */
346
347 cardp->fwseqnum = cardp->fwseqnum + 1;
348
349 fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
350 cardp->lastseqnum = cardp->fwseqnum;
351 cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
352
353 if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
354 /*
355 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
356 lbs_deb_usbd(&cardp->udev->dev,
357 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
358 cardp->totalbytes);
359 */
360 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
361 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
362
363 } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
364 /*
365 lbs_deb_usbd(&cardp->udev->dev,
366 "Host has finished FW downloading\n");
367 lbs_deb_usbd(&cardp->udev->dev,
368 "Donwloading FW JUMP BLOCK\n");
369 */
370 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
371 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
372 cardp->fwfinalblk = 1;
373 }
374
375 /*
376 lbs_deb_usbd(&cardp->udev->dev,
377 "The firmware download is done size is %d\n",
378 cardp->totalbytes);
379 */
380
381 kfree(fwdata);
382
383 return 0;
384 }
385
386 static int if_usb_reset_device(struct usb_card_rec *cardp)
387 {
388 int ret;
389 wlan_private * priv = cardp->priv;
390
391 lbs_deb_enter(LBS_DEB_USB);
392
393 /* Try a USB port reset first, if that fails send the reset
394 * command to the firmware.
395 */
396 ret = usb_reset_device(cardp->udev);
397 if (!ret && priv) {
398 msleep(10);
399 ret = libertas_reset_device(priv);
400 msleep(10);
401 }
402
403 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
404
405 return ret;
406 }
407
408 /**
409 * @brief This function transfer the data to the device.
410 * @param priv pointer to wlan_private
411 * @param payload pointer to payload data
412 * @param nb data length
413 * @return 0 or -1
414 */
415 static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb)
416 {
417 int ret = -1;
418
419 /* check if device is removed */
420 if (cardp->surprise_removed) {
421 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
422 goto tx_ret;
423 }
424
425 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
426 usb_sndbulkpipe(cardp->udev,
427 cardp->bulk_out_endpointAddr),
428 payload, nb, if_usb_write_bulk_callback, cardp);
429
430 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
431
432 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
433 /* transfer failed */
434 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
435 ret = -1;
436 } else {
437 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
438 ret = 0;
439 }
440
441 tx_ret:
442 return ret;
443 }
444
445 static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp,
446 void (*callbackfn)(struct urb *urb))
447 {
448 struct sk_buff *skb;
449 struct read_cb_info *rinfo = &cardp->rinfo;
450 int ret = -1;
451
452 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
453 lbs_pr_err("No free skb\n");
454 goto rx_ret;
455 }
456
457 rinfo->skb = skb;
458
459 /* Fill the receive configuration URB and initialise the Rx call back */
460 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
461 usb_rcvbulkpipe(cardp->udev,
462 cardp->bulk_in_endpointAddr),
463 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
464 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
465 rinfo);
466
467 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
468
469 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
470 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
471 /* handle failure conditions */
472 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
473 ret = -1;
474 } else {
475 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
476 ret = 0;
477 }
478
479 rx_ret:
480 return ret;
481 }
482
483 static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp)
484 {
485 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
486 }
487
488 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
489 {
490 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
491 }
492
493 static void if_usb_receive_fwload(struct urb *urb)
494 {
495 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
496 struct sk_buff *skb = rinfo->skb;
497 struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
498 struct fwsyncheader *syncfwheader;
499 struct bootcmdrespStr bootcmdresp;
500
501 if (urb->status) {
502 lbs_deb_usbd(&cardp->udev->dev,
503 "URB status is failed during fw load\n");
504 kfree_skb(skb);
505 return;
506 }
507
508 if (cardp->bootcmdresp == 0) {
509 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
510 sizeof(bootcmdresp));
511 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
512 kfree_skb(skb);
513 if_usb_submit_rx_urb_fwload(cardp);
514 cardp->bootcmdresp = 1;
515 lbs_deb_usbd(&cardp->udev->dev,
516 "Received valid boot command response\n");
517 return;
518 }
519 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
520 lbs_pr_info(
521 "boot cmd response wrong magic number (0x%x)\n",
522 le32_to_cpu(bootcmdresp.u32magicnumber));
523 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
524 lbs_pr_info(
525 "boot cmd response cmd_tag error (%d)\n",
526 bootcmdresp.u8cmd_tag);
527 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
528 lbs_pr_info(
529 "boot cmd response result error (%d)\n",
530 bootcmdresp.u8result);
531 } else {
532 cardp->bootcmdresp = 1;
533 lbs_deb_usbd(&cardp->udev->dev,
534 "Received valid boot command response\n");
535 }
536 kfree_skb(skb);
537 if_usb_submit_rx_urb_fwload(cardp);
538 return;
539 }
540
541 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
542 if (!syncfwheader) {
543 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
544 kfree_skb(skb);
545 return;
546 }
547
548 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
549 sizeof(struct fwsyncheader));
550
551 if (!syncfwheader->cmd) {
552 /*
553 lbs_deb_usbd(&cardp->udev->dev,
554 "FW received Blk with correct CRC\n");
555 lbs_deb_usbd(&cardp->udev->dev,
556 "FW received Blk seqnum = %d\n",
557 syncfwheader->seqnum);
558 */
559 cardp->CRC_OK = 1;
560 } else {
561 lbs_deb_usbd(&cardp->udev->dev,
562 "FW received Blk with CRC error\n");
563 cardp->CRC_OK = 0;
564 }
565
566 kfree_skb(skb);
567
568 if (cardp->fwfinalblk) {
569 cardp->fwdnldover = 1;
570 goto exit;
571 }
572
573 if_prog_firmware(cardp);
574
575 if_usb_submit_rx_urb_fwload(cardp);
576 exit:
577 kfree(syncfwheader);
578
579 return;
580
581 }
582
583 #define MRVDRV_MIN_PKT_LEN 30
584
585 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
586 struct usb_card_rec *cardp,
587 wlan_private *priv)
588 {
589 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
590 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
591 lbs_deb_usbd(&cardp->udev->dev,
592 "Packet length is Invalid\n");
593 kfree_skb(skb);
594 return;
595 }
596
597 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
598 skb_put(skb, recvlength);
599 skb_pull(skb, MESSAGE_HEADER_LEN);
600 libertas_process_rxed_packet(priv, skb);
601 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
602 }
603
604 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
605 struct sk_buff *skb,
606 struct usb_card_rec *cardp,
607 wlan_private *priv)
608 {
609 u8 *cmdbuf;
610 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
611 lbs_deb_usbd(&cardp->udev->dev,
612 "The receive buffer is too large\n");
613 kfree_skb(skb);
614 return;
615 }
616
617 if (!in_interrupt())
618 BUG();
619
620 spin_lock(&priv->adapter->driver_lock);
621 /* take care of cur_cmd = NULL case by reading the
622 * data to clear the interrupt */
623 if (!priv->adapter->cur_cmd) {
624 cmdbuf = priv->upld_buf;
625 priv->adapter->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
626 } else
627 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
628
629 cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
630 priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
631 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
632 priv->upld_len);
633
634 kfree_skb(skb);
635 libertas_interrupt(priv->dev);
636 spin_unlock(&priv->adapter->driver_lock);
637
638 lbs_deb_usbd(&cardp->udev->dev,
639 "Wake up main thread to handle cmd response\n");
640
641 return;
642 }
643
644 /**
645 * @brief This function reads of the packet into the upload buff,
646 * wake up the main thread and initialise the Rx callack.
647 *
648 * @param urb pointer to struct urb
649 * @return N/A
650 */
651 static void if_usb_receive(struct urb *urb)
652 {
653 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
654 struct sk_buff *skb = rinfo->skb;
655 struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
656 wlan_private * priv = cardp->priv;
657
658 int recvlength = urb->actual_length;
659 u8 *recvbuff = NULL;
660 u32 recvtype = 0;
661
662 lbs_deb_enter(LBS_DEB_USB);
663
664 if (recvlength) {
665 __le32 tmp;
666
667 if (urb->status) {
668 lbs_deb_usbd(&cardp->udev->dev,
669 "URB status is failed\n");
670 kfree_skb(skb);
671 goto setup_for_next;
672 }
673
674 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
675 memcpy(&tmp, recvbuff, sizeof(u32));
676 recvtype = le32_to_cpu(tmp);
677 lbs_deb_usbd(&cardp->udev->dev,
678 "Recv length = 0x%x, Recv type = 0x%X\n",
679 recvlength, recvtype);
680 } else if (urb->status)
681 goto rx_exit;
682
683 switch (recvtype) {
684 case CMD_TYPE_DATA:
685 process_cmdtypedata(recvlength, skb, cardp, priv);
686 break;
687
688 case CMD_TYPE_REQUEST:
689 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
690 break;
691
692 case CMD_TYPE_INDICATION:
693 /* Event cause handling */
694 spin_lock(&priv->adapter->driver_lock);
695 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
696 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
697 cardp->usb_event_cause);
698 if (cardp->usb_event_cause & 0xffff0000) {
699 libertas_send_tx_feedback(priv);
700 spin_unlock(&priv->adapter->driver_lock);
701 break;
702 }
703 cardp->usb_event_cause <<= 3;
704 cardp->usb_int_cause |= MRVDRV_CARDEVENT;
705 kfree_skb(skb);
706 libertas_interrupt(priv->dev);
707 spin_unlock(&priv->adapter->driver_lock);
708 goto rx_exit;
709 default:
710 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
711 recvtype);
712 kfree_skb(skb);
713 break;
714 }
715
716 setup_for_next:
717 if_usb_submit_rx_urb(cardp);
718 rx_exit:
719 lbs_deb_leave(LBS_DEB_USB);
720 }
721
722 /**
723 * @brief This function downloads data to FW
724 * @param priv pointer to wlan_private structure
725 * @param type type of data
726 * @param buf pointer to data buffer
727 * @param len number of bytes
728 * @return 0 or -1
729 */
730 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
731 {
732 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
733
734 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
735 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
736
737 if (type == MVMS_CMD) {
738 __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
739 priv->dnld_sent = DNLD_CMD_SENT;
740 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
741 MESSAGE_HEADER_LEN);
742
743 } else {
744 __le32 tmp = cpu_to_le32(CMD_TYPE_DATA);
745 priv->dnld_sent = DNLD_DATA_SENT;
746 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
747 MESSAGE_HEADER_LEN);
748 }
749
750 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
751
752 return usb_tx_block(cardp, cardp->bulk_out_buffer,
753 nb + MESSAGE_HEADER_LEN);
754 }
755
756 /* called with adapter->driver_lock held */
757 static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
758 {
759 struct usb_card_rec *cardp = priv->card;
760
761 *ireg = cardp->usb_int_cause;
762 cardp->usb_int_cause = 0;
763
764 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
765
766 return 0;
767 }
768
769 static int if_usb_read_event_cause(wlan_private * priv)
770 {
771 struct usb_card_rec *cardp = priv->card;
772
773 priv->adapter->eventcause = cardp->usb_event_cause;
774 /* Re-submit rx urb here to avoid event lost issue */
775 if_usb_submit_rx_urb(cardp);
776 return 0;
777 }
778
779 /**
780 * @brief This function issues Boot command to the Boot2 code
781 * @param ivalue 1:Boot from FW by USB-Download
782 * 2:Boot from FW in EEPROM
783 * @return 0
784 */
785 static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
786 {
787 struct bootcmdstr sbootcmd;
788 int i;
789
790 /* Prepare command */
791 sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
792 sbootcmd.u8cmd_tag = ivalue;
793 for (i=0; i<11; i++)
794 sbootcmd.au8dumy[i]=0x00;
795 memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
796
797 /* Issue command */
798 usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
799
800 return 0;
801 }
802
803
804 /**
805 * @brief This function checks the validity of Boot2/FW image.
806 *
807 * @param data pointer to image
808 * len image length
809 * @return 0 or -1
810 */
811 static int check_fwfile_format(u8 *data, u32 totlen)
812 {
813 u32 bincmd, exit;
814 u32 blksize, offset, len;
815 int ret;
816
817 ret = 1;
818 exit = len = 0;
819
820 do {
821 struct fwheader *fwh = (void *)data;
822
823 bincmd = le32_to_cpu(fwh->dnldcmd);
824 blksize = le32_to_cpu(fwh->datalength);
825 switch (bincmd) {
826 case FW_HAS_DATA_TO_RECV:
827 offset = sizeof(struct fwheader) + blksize;
828 data += offset;
829 len += offset;
830 if (len >= totlen)
831 exit = 1;
832 break;
833 case FW_HAS_LAST_BLOCK:
834 exit = 1;
835 ret = 0;
836 break;
837 default:
838 exit = 1;
839 break;
840 }
841 } while (!exit);
842
843 if (ret)
844 lbs_pr_err("firmware file format check FAIL\n");
845 else
846 lbs_deb_fw("firmware file format check PASS\n");
847
848 return ret;
849 }
850
851
852 static int if_usb_prog_firmware(struct usb_card_rec *cardp)
853 {
854 int i = 0;
855 static int reset_count = 10;
856 int ret = 0;
857
858 lbs_deb_enter(LBS_DEB_USB);
859
860 if ((ret = request_firmware(&cardp->fw, libertas_fw_name,
861 &cardp->udev->dev)) < 0) {
862 lbs_pr_err("request_firmware() failed with %#x\n", ret);
863 lbs_pr_err("firmware %s not found\n", libertas_fw_name);
864 goto done;
865 }
866
867 if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
868 goto release_fw;
869
870 restart:
871 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
872 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
873 ret = -1;
874 goto release_fw;
875 }
876
877 cardp->bootcmdresp = 0;
878 do {
879 int j = 0;
880 i++;
881 /* Issue Boot command = 1, Boot from Download-FW */
882 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
883 /* wait for command response */
884 do {
885 j++;
886 msleep_interruptible(100);
887 } while (cardp->bootcmdresp == 0 && j < 10);
888 } while (cardp->bootcmdresp == 0 && i < 5);
889
890 if (cardp->bootcmdresp == 0) {
891 if (--reset_count >= 0) {
892 if_usb_reset_device(cardp);
893 goto restart;
894 }
895 return -1;
896 }
897
898 i = 0;
899
900 cardp->totalbytes = 0;
901 cardp->fwlastblksent = 0;
902 cardp->CRC_OK = 1;
903 cardp->fwdnldover = 0;
904 cardp->fwseqnum = -1;
905 cardp->totalbytes = 0;
906 cardp->fwfinalblk = 0;
907
908 if_prog_firmware(cardp);
909
910 do {
911 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
912 i++;
913 msleep_interruptible(100);
914 if (cardp->surprise_removed || i >= 20)
915 break;
916 } while (!cardp->fwdnldover);
917
918 if (!cardp->fwdnldover) {
919 lbs_pr_info("failed to load fw, resetting device!\n");
920 if (--reset_count >= 0) {
921 if_usb_reset_device(cardp);
922 goto restart;
923 }
924
925 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
926 ret = -1;
927 goto release_fw;
928 }
929
930 release_fw:
931 release_firmware(cardp->fw);
932 cardp->fw = NULL;
933
934 done:
935 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
936 return ret;
937 }
938
939
940 #ifdef CONFIG_PM
941 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
942 {
943 struct usb_card_rec *cardp = usb_get_intfdata(intf);
944 wlan_private *priv = cardp->priv;
945
946 lbs_deb_enter(LBS_DEB_USB);
947
948 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
949 return -1;
950
951 if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
952 /* Mesh autostart must be activated while sleeping
953 * On resume it will go back to the current state
954 */
955 struct cmd_ds_mesh_access mesh_access;
956 memset(&mesh_access, 0, sizeof(mesh_access));
957 mesh_access.data[0] = cpu_to_le32(1);
958 libertas_prepare_and_send_command(priv,
959 CMD_MESH_ACCESS,
960 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
961 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
962 }
963
964 netif_device_detach(cardp->eth_dev);
965 netif_device_detach(priv->mesh_dev);
966
967 /* Unlink tx & rx urb */
968 usb_kill_urb(cardp->tx_urb);
969 usb_kill_urb(cardp->rx_urb);
970
971 cardp->rx_urb_recall = 1;
972
973 lbs_deb_leave(LBS_DEB_USB);
974 return 0;
975 }
976
977 static int if_usb_resume(struct usb_interface *intf)
978 {
979 struct usb_card_rec *cardp = usb_get_intfdata(intf);
980 wlan_private *priv = cardp->priv;
981
982 lbs_deb_enter(LBS_DEB_USB);
983
984 cardp->rx_urb_recall = 0;
985
986 if_usb_submit_rx_urb(cardp->priv);
987
988 netif_device_attach(cardp->eth_dev);
989 netif_device_attach(priv->mesh_dev);
990
991 if (priv->mesh_dev && !priv->mesh_autostart_enabled) {
992 /* Mesh autostart was activated while sleeping
993 * Disable it if appropriate
994 */
995 struct cmd_ds_mesh_access mesh_access;
996 memset(&mesh_access, 0, sizeof(mesh_access));
997 mesh_access.data[0] = cpu_to_le32(0);
998 libertas_prepare_and_send_command(priv,
999 CMD_MESH_ACCESS,
1000 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
1001 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
1002 }
1003
1004 lbs_deb_leave(LBS_DEB_USB);
1005 return 0;
1006 }
1007 #else
1008 #define if_usb_suspend NULL
1009 #define if_usb_resume NULL
1010 #endif
1011
1012 static struct usb_driver if_usb_driver = {
1013 /* driver name */
1014 .name = usbdriver_name,
1015 /* probe function name */
1016 .probe = if_usb_probe,
1017 /* disconnect function name */
1018 .disconnect = if_usb_disconnect,
1019 /* device signature table */
1020 .id_table = if_usb_table,
1021 .suspend = if_usb_suspend,
1022 .resume = if_usb_resume,
1023 };
1024
1025 static int if_usb_init_module(void)
1026 {
1027 int ret = 0;
1028
1029 lbs_deb_enter(LBS_DEB_MAIN);
1030
1031 if (libertas_fw_name == NULL) {
1032 libertas_fw_name = default_fw_name;
1033 }
1034
1035 ret = usb_register(&if_usb_driver);
1036
1037 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1038 return ret;
1039 }
1040
1041 static void if_usb_exit_module(void)
1042 {
1043 struct usb_card_rec *cardp, *cardp_temp;
1044
1045 lbs_deb_enter(LBS_DEB_MAIN);
1046
1047 list_for_each_entry_safe(cardp, cardp_temp, &usb_devices, list) {
1048 libertas_prepare_and_send_command(cardp->priv, CMD_802_11_RESET,
1049 CMD_ACT_HALT, 0, 0, NULL);
1050 }
1051
1052 /* API unregisters the driver from USB subsystem */
1053 usb_deregister(&if_usb_driver);
1054
1055 lbs_deb_leave(LBS_DEB_MAIN);
1056 }
1057
1058 module_init(if_usb_init_module);
1059 module_exit(if_usb_exit_module);
1060
1061 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1062 MODULE_AUTHOR("Marvell International Ltd.");
1063 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards