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[PATCH] libertas: fix error handling of card initialization
[deliverable/linux.git] / drivers / net / wireless / libertas / if_usb.c
CommitLineData
876c9d3a
MT		 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
18static const char usbdriver_name[] = "usb8xxx";
19
3874d0fe
HS		 20#define MAX_DEVS 5
21static struct net_device *libertas_devs[MAX_DEVS];
22static int libertas_found = 0;
23
876c9d3a
MT		 24static struct usb_device_id if_usb_table[] = {
25 /* Enter the device signature inside */
66fcc559
HS		 26 { USB_DEVICE(0x1286, 0x2001) },
27 { USB_DEVICE(0x05a3, 0x8388) },
876c9d3a
MT		 28 {} /* Terminating entry */
29};
30
31MODULE_DEVICE_TABLE(usb, if_usb_table);
32
33static void if_usb_receive(struct urb *urb);
34static void if_usb_receive_fwload(struct urb *urb);
3874d0fe 35static int reset_device(wlan_private *priv);
876c9d3a
MT		 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 */
42static 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 {
9012b28a
HS		 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",
876c9d3a 57 urb->actual_length);
9012b28a 58 */
876c9d3a
MT		 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);
51d84f50 63 if ((adapter->connect_status == libertas_connected)) {
876c9d3a 64 netif_wake_queue(dev);
51d84f50
JC		 65 netif_wake_queue(priv->mesh_dev);
66 }
876c9d3a
MT		 67 }
68
69 return;
70}
71
72/**
73 * @brief free tx/rx urb, skb and rx buffer
74 * @param cardp pointer usb_card_rec
75 * @return N/A
76 */
77void if_usb_free(struct usb_card_rec *cardp)
78{
9012b28a 79 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 80
81 /* Unlink tx & rx urb */
82 usb_kill_urb(cardp->tx_urb);
83 usb_kill_urb(cardp->rx_urb);
84
85 usb_free_urb(cardp->tx_urb);
86 cardp->tx_urb = NULL;
87
88 usb_free_urb(cardp->rx_urb);
89 cardp->rx_urb = NULL;
90
91 kfree(cardp->bulk_out_buffer);
92 cardp->bulk_out_buffer = NULL;
93
9012b28a 94 lbs_deb_leave(LBS_DEB_USB);
876c9d3a
MT		 95}
96
97/**
98 * @brief sets the configuration values
99 * @param ifnum interface number
100 * @param id pointer to usb_device_id
101 * @return 0 on success, error code on failure
102 */
103static int if_usb_probe(struct usb_interface *intf,
104 const struct usb_device_id *id)
105{
106 struct usb_device *udev;
107 struct usb_host_interface *iface_desc;
108 struct usb_endpoint_descriptor *endpoint;
78523daa 109 wlan_private *priv;
876c9d3a
MT		 110 struct usb_card_rec *usb_cardp;
111 int i;
112
113 udev = interface_to_usbdev(intf);
114
115 usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
116 if (!usb_cardp) {
117 lbs_pr_err("Out of memory allocating private data.\n");
118 goto error;
119 }
120
121 usb_cardp->udev = udev;
122 iface_desc = intf->cur_altsetting;
123
9012b28a 124 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
876c9d3a
MT		 125 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
126 udev->descriptor.bcdUSB,
127 udev->descriptor.bDeviceClass,
128 udev->descriptor.bDeviceSubClass,
129 udev->descriptor.bDeviceProtocol);
130
131 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
132 endpoint = &iface_desc->endpoint[i].desc;
133 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
134 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
135 USB_ENDPOINT_XFER_BULK)) {
136 /* we found a bulk in endpoint */
9012b28a 137 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
876c9d3a
MT		 138 endpoint->wMaxPacketSize);
139 if (!
140 (usb_cardp->rx_urb =
141 usb_alloc_urb(0, GFP_KERNEL))) {
9012b28a 142 lbs_deb_usbd(&udev->dev,
876c9d3a
MT		 143 "Rx URB allocation failed\n");
144 goto dealloc;
145 }
146 usb_cardp->rx_urb_recall = 0;
147
148 usb_cardp->bulk_in_size =
149 endpoint->wMaxPacketSize;
150 usb_cardp->bulk_in_endpointAddr =
151 (endpoint->
152 bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
9012b28a 153 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
876c9d3a
MT		 154 endpoint->bEndpointAddress);
155 }
156
157 if (((endpoint->
158 bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
159 USB_DIR_OUT)
160 && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
161 USB_ENDPOINT_XFER_BULK)) {
162 /* We found bulk out endpoint */
163 if (!
164 (usb_cardp->tx_urb =
165 usb_alloc_urb(0, GFP_KERNEL))) {
9012b28a 166 lbs_deb_usbd(&udev->dev,
876c9d3a
MT		 167 "Tx URB allocation failed\n");
168 goto dealloc;
169 }
170
171 usb_cardp->bulk_out_size =
172 endpoint->wMaxPacketSize;
9012b28a 173 lbs_deb_usbd(&udev->dev,
876c9d3a
MT		 174 "Bulk out size is %d\n",
175 endpoint->wMaxPacketSize);
176 usb_cardp->bulk_out_endpointAddr =
177 endpoint->bEndpointAddress;
9012b28a 178 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
876c9d3a
MT		 179 endpoint->bEndpointAddress);
180 usb_cardp->bulk_out_buffer =
181 kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
182 GFP_KERNEL);
183
184 if (!usb_cardp->bulk_out_buffer) {
9012b28a 185 lbs_deb_usbd(&udev->dev,
876c9d3a
MT		 186 "Could not allocate buffer\n");
187 goto dealloc;
188 }
189 }
190 }
191
192
193 /* At this point wlan_add_card() will be called. Don't worry
194 * about keeping pwlanpriv around since it will be set on our
195 * usb device data in -> add() -> libertas_sbi_register_dev().
196 */
78523daa
HS		 197 if (!(priv = wlan_add_card(usb_cardp)))
198 goto dealloc;
3874d0fe 199
51d84f50 200 if (wlan_add_mesh(priv))
6a812157 201 goto err_add_mesh;
51d84f50 202
32a74b7c 203 if (libertas_activate_card(priv))
6a812157 204 goto err_activate_card;
32a74b7c 205
3874d0fe
HS		 206 if (libertas_found < MAX_DEVS) {
207 libertas_devs[libertas_found] = priv->wlan_dev.netdev;
208 libertas_found++;
209 }
210
876c9d3a
MT		 211 usb_get_dev(udev);
212 usb_set_intfdata(intf, usb_cardp);
213
214 /*
215 * return card structure, which can be got back in the
216 * diconnect function as the ptr
217 * argument.
218 */
219 return 0;
220
6a812157
MT		 221err_activate_card:
222 unregister_netdev(priv->mesh_dev);
223 free_netdev(priv->mesh_dev);
224err_add_mesh:
225 free_netdev(priv->wlan_dev.netdev);
226 kfree(priv->adapter);
876c9d3a
MT		 227dealloc:
228 if_usb_free(usb_cardp);
229
230error:
231 return -ENOMEM;
232}
233
234/**
235 * @brief free resource and cleanup
236 * @param udev pointer to usb_device
237 * @param ptr pointer to usb_cardp
238 * @return N/A
239 */
240static void if_usb_disconnect(struct usb_interface *intf)
241{
242 struct usb_card_rec *cardp = usb_get_intfdata(intf);
243 wlan_private *priv = (wlan_private *) cardp->priv;
244 wlan_adapter *adapter = NULL;
3874d0fe 245 int i;
876c9d3a
MT		 246
247 adapter = priv->adapter;
248
249 /*
250 * Update Surprise removed to TRUE
251 */
252 adapter->surpriseremoved = 1;
253
3874d0fe
HS		 254 for (i = 0; i<libertas_found; i++) {
255 if (libertas_devs[i]==priv->wlan_dev.netdev) {
256 libertas_devs[i] = libertas_devs[--libertas_found];
257 libertas_devs[libertas_found] = NULL ;
258 break;
259 }
260 }
261
876c9d3a 262 /* card is removed and we can call wlan_remove_card */
9012b28a 263 lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
78523daa 264 wlan_remove_mesh(priv);
1ac812f1 265 wlan_remove_card(priv);
876c9d3a
MT		 266
267 /* Unlink and free urb */
268 if_usb_free(cardp);
269
270 usb_set_intfdata(intf, NULL);
271 usb_put_dev(interface_to_usbdev(intf));
272
273 return;
274}
275
276/**
277 * @brief This function download FW
278 * @param priv pointer to wlan_private
279 * @return 0
280 */
281static int if_prog_firmware(wlan_private * priv)
282{
283 struct usb_card_rec *cardp = priv->wlan_dev.card;
284 struct FWData *fwdata;
285 struct fwheader *fwheader;
286 u8 *firmware = priv->firmware->data;
287
288 fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
289
290 if (!fwdata)
291 return -1;
292
293 fwheader = &fwdata->fwheader;
294
295 if (!cardp->CRC_OK) {
296 cardp->totalbytes = cardp->fwlastblksent;
297 cardp->fwseqnum = cardp->lastseqnum - 1;
298 }
299
9012b28a
HS		 300 /*
301 lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
876c9d3a 302 cardp->totalbytes);
9012b28a 303 */
876c9d3a
MT		 304
305 memcpy(fwheader, &firmware[cardp->totalbytes],
306 sizeof(struct fwheader));
307
308 cardp->fwlastblksent = cardp->totalbytes;
309 cardp->totalbytes += sizeof(struct fwheader);
310
9012b28a 311 /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
876c9d3a
MT		 312 memcpy(fwdata->data, &firmware[cardp->totalbytes],
313 fwdata->fwheader.datalength);
314
9012b28a
HS		 315 /*
316 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a 317 "Data length = %d\n", fwdata->fwheader.datalength);
9012b28a 318 */
876c9d3a
MT		 319
320 cardp->fwseqnum = cardp->fwseqnum + 1;
321
322 fwdata->seqnum = cardp->fwseqnum;
323 cardp->lastseqnum = fwdata->seqnum;
324 cardp->totalbytes += fwdata->fwheader.datalength;
325
326 if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
9012b28a
HS		 327 /*
328 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
329 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 330 "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
331 cardp->totalbytes);
9012b28a 332 */
876c9d3a
MT		 333 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
334 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
335
336 } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
9012b28a
HS		 337 /*
338 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a 339 "Host has finished FW downloading\n");
9012b28a 340 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a 341 "Donwloading FW JUMP BLOCK\n");
9012b28a 342 */
876c9d3a
MT		 343 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
344 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
345 cardp->fwfinalblk = 1;
346 }
347
9012b28a
HS		 348 /*
349 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 350 "The firmware download is done size is %d\n",
351 cardp->totalbytes);
9012b28a 352 */
876c9d3a
MT		 353
354 kfree(fwdata);
355
356 return 0;
357}
358
359static int libertas_do_reset(wlan_private *priv)
360{
361 int ret;
362 struct usb_card_rec *cardp = priv->wlan_dev.card;
363
3874d0fe
HS		 364 lbs_deb_enter(LBS_DEB_USB);
365
876c9d3a
MT		 366 ret = usb_reset_device(cardp->udev);
367 if (!ret) {
368 msleep(10);
369 reset_device(priv);
370 msleep(10);
371 }
3874d0fe
HS		 372
373 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
374
876c9d3a
MT		 375 return ret;
376}
377
378/**
379 * @brief This function transfer the data to the device.
380 * @param priv pointer to wlan_private
381 * @param payload pointer to payload data
382 * @param nb data length
383 * @return 0 or -1
384 */
385int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
386{
387 /* pointer to card structure */
388 struct usb_card_rec *cardp = priv->wlan_dev.card;
389 int ret = -1;
390
391 /* check if device is removed */
392 if (priv->adapter->surpriseremoved) {
9012b28a 393 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
876c9d3a
MT		 394 goto tx_ret;
395 }
396
397 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
398 usb_sndbulkpipe(cardp->udev,
399 cardp->bulk_out_endpointAddr),
400 payload, nb, if_usb_write_bulk_callback, priv);
401
402 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
403
404 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
405 /* transfer failed */
9012b28a 406 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
876c9d3a
MT		 407 ret = -1;
408 } else {
9012b28a 409 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
876c9d3a
MT		 410 ret = 0;
411 }
412
413tx_ret:
414 return ret;
415}
416
417static int __if_usb_submit_rx_urb(wlan_private * priv,
418 void (*callbackfn)
419 (struct urb *urb))
420{
421 struct usb_card_rec *cardp = priv->wlan_dev.card;
422 struct sk_buff *skb;
423 struct read_cb_info *rinfo = &cardp->rinfo;
424 int ret = -1;
425
426 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
427 lbs_pr_err("No free skb\n");
428 goto rx_ret;
429 }
430
431 rinfo->skb = skb;
432
433 /* Fill the receive configuration URB and initialise the Rx call back */
434 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
435 usb_rcvbulkpipe(cardp->udev,
436 cardp->bulk_in_endpointAddr),
4269e2ad 437 (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
876c9d3a
MT		 438 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
439 rinfo);
440
441 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
442
9012b28a 443 /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
876c9d3a
MT		 444 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
445 /* handle failure conditions */
9012b28a 446 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
876c9d3a
MT		 447 ret = -1;
448 } else {
9012b28a 449 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
876c9d3a
MT		 450 ret = 0;
451 }
452
453rx_ret:
454 return ret;
455}
456
457static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
458{
459 return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
460}
461
462static inline int if_usb_submit_rx_urb(wlan_private * priv)
463{
464 return __if_usb_submit_rx_urb(priv, &if_usb_receive);
465}
466
467static void if_usb_receive_fwload(struct urb *urb)
468{
469 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
470 wlan_private *priv = rinfo->priv;
471 struct sk_buff *skb = rinfo->skb;
472 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
473 struct fwsyncheader *syncfwheader;
474 struct bootcmdrespStr bootcmdresp;
475
476 if (urb->status) {
9012b28a 477 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 478 "URB status is failed during fw load\n");
479 kfree_skb(skb);
480 return;
481 }
482
483 if (cardp->bootcmdresp == 0) {
484 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
485 sizeof(bootcmdresp));
486 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
487 kfree_skb(skb);
488 if_usb_submit_rx_urb_fwload(priv);
489 cardp->bootcmdresp = 1;
9012b28a 490 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 491 "Received valid boot command response\n");
492 return;
493 }
494 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
495 lbs_pr_info(
496 "boot cmd response wrong magic number (0x%x)\n",
497 bootcmdresp.u32magicnumber);
498 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
499 lbs_pr_info(
500 "boot cmd response cmd_tag error (%d)\n",
501 bootcmdresp.u8cmd_tag);
502 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
503 lbs_pr_info(
504 "boot cmd response result error (%d)\n",
505 bootcmdresp.u8result);
506 } else {
507 cardp->bootcmdresp = 1;
9012b28a 508 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 509 "Received valid boot command response\n");
510 }
511 kfree_skb(skb);
512 if_usb_submit_rx_urb_fwload(priv);
513 return;
514 }
515
516 syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
517 if (!syncfwheader) {
9012b28a 518 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
876c9d3a
MT		 519 kfree_skb(skb);
520 return;
521 }
522
523 memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
524 sizeof(struct fwsyncheader));
525
526 if (!syncfwheader->cmd) {
9012b28a
HS		 527 /*
528 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a 529 "FW received Blk with correct CRC\n");
9012b28a 530 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 531 "FW received Blk seqnum = %d\n",
532 syncfwheader->seqnum);
9012b28a 533 */
876c9d3a
MT		 534 cardp->CRC_OK = 1;
535 } else {
9012b28a 536 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 537 "FW received Blk with CRC error\n");
538 cardp->CRC_OK = 0;
539 }
540
541 kfree_skb(skb);
542
543 if (cardp->fwfinalblk) {
544 cardp->fwdnldover = 1;
545 goto exit;
546 }
547
548 if_prog_firmware(priv);
549
550 if_usb_submit_rx_urb_fwload(priv);
551exit:
552 kfree(syncfwheader);
553
554 return;
555
556}
557
558#define MRVDRV_MIN_PKT_LEN 30
559
560static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
561 struct usb_card_rec *cardp,
562 wlan_private *priv)
563{
564 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
565 MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
9012b28a 566 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 567 "Packet length is Invalid\n");
568 kfree_skb(skb);
569 return;
570 }
571
572 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
573 skb_put(skb, recvlength);
574 skb_pull(skb, MESSAGE_HEADER_LEN);
575 libertas_process_rxed_packet(priv, skb);
576 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
577}
578
579static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
580 struct sk_buff *skb,
581 struct usb_card_rec *cardp,
582 wlan_private *priv)
583{
584 u8 *cmdbuf;
585 if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
9012b28a 586 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 587 "The receive buffer is too large\n");
588 kfree_skb(skb);
589 return;
590 }
591
592 if (!in_interrupt())
593 BUG();
594
595 spin_lock(&priv->adapter->driver_lock);
596 /* take care of cur_cmd = NULL case by reading the
597 * data to clear the interrupt */
598 if (!priv->adapter->cur_cmd) {
599 cmdbuf = priv->wlan_dev.upld_buf;
600 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
601 } else
602 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
603
604 cardp->usb_int_cause |= his_cmdupldrdy;
605 priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
606 memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
607 priv->wlan_dev.upld_len);
608
609 kfree_skb(skb);
610 libertas_interrupt(priv->wlan_dev.netdev);
611 spin_unlock(&priv->adapter->driver_lock);
612
9012b28a 613 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 614 "Wake up main thread to handle cmd response\n");
615
616 return;
617}
618
619/**
620 * @brief This function reads of the packet into the upload buff,
621 * wake up the main thread and initialise the Rx callack.
622 *
623 * @param urb pointer to struct urb
624 * @return N/A
625 */
626static void if_usb_receive(struct urb *urb)
627{
628 struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
629 wlan_private *priv = rinfo->priv;
630 struct sk_buff *skb = rinfo->skb;
631 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
632
633 int recvlength = urb->actual_length;
634 u8 *recvbuff = NULL;
635 u32 recvtype;
636
9012b28a 637 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 638
639 if (recvlength) {
640 if (urb->status) {
9012b28a 641 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 642 "URB status is failed\n");
643 kfree_skb(skb);
644 goto setup_for_next;
645 }
646
647 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
648 memcpy(&recvtype, recvbuff, sizeof(u32));
9012b28a 649 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a 650 "Recv length = 0x%x\n", recvlength);
9012b28a 651 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 652 "Receive type = 0x%X\n", recvtype);
653 recvtype = le32_to_cpu(recvtype);
9012b28a 654 lbs_deb_usbd(&cardp->udev->dev,
876c9d3a
MT		 655 "Receive type after = 0x%X\n", recvtype);
656 } else if (urb->status)
657 goto rx_exit;
658
659
660 switch (recvtype) {
661 case CMD_TYPE_DATA:
662 process_cmdtypedata(recvlength, skb, cardp, priv);
663 break;
664
665 case CMD_TYPE_REQUEST:
666 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
667 break;
668
669 case CMD_TYPE_INDICATION:
670 /* Event cause handling */
671 spin_lock(&priv->adapter->driver_lock);
672 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
9012b28a 673 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
876c9d3a
MT		 674 cardp->usb_event_cause);
675 if (cardp->usb_event_cause & 0xffff0000) {
676 libertas_send_tx_feedback(priv);
12a4d265 677 spin_unlock(&priv->adapter->driver_lock);
876c9d3a
MT		 678 break;
679 }
680 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
681 cardp->usb_int_cause |= his_cardevent;
682 kfree_skb(skb);
683 libertas_interrupt(priv->wlan_dev.netdev);
684 spin_unlock(&priv->adapter->driver_lock);
685 goto rx_exit;
686 default:
687 kfree_skb(skb);
688 break;
689 }
690
691setup_for_next:
692 if_usb_submit_rx_urb(priv);
693rx_exit:
9012b28a 694 lbs_deb_leave(LBS_DEB_USB);
876c9d3a
MT		 695}
696
697/**
698 * @brief This function downloads data to FW
699 * @param priv pointer to wlan_private structure
700 * @param type type of data
701 * @param buf pointer to data buffer
702 * @param len number of bytes
703 * @return 0 or -1
704 */
705int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
706{
707 int ret = -1;
708 u32 tmp;
709 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
710
9012b28a
HS		 711 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
712 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
876c9d3a
MT		 713
714 if (type == MVMS_CMD) {
715 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
716 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
717 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
718 MESSAGE_HEADER_LEN);
719
720 } else {
721 tmp = cpu_to_le32(CMD_TYPE_DATA);
722 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
723 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
724 MESSAGE_HEADER_LEN);
725 }
726
727 memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
728
729 ret =
730 usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
731
732 return ret;
733}
734
735/* called with adapter->driver_lock held */
736int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
737{
738 struct usb_card_rec *cardp = priv->wlan_dev.card;
739
740 *ireg = cardp->usb_int_cause;
741 cardp->usb_int_cause = 0;
742
9012b28a 743 lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
876c9d3a
MT		 744
745 return 0;
746}
747
748int libertas_sbi_read_event_cause(wlan_private * priv)
749{
750 struct usb_card_rec *cardp = priv->wlan_dev.card;
751 priv->adapter->eventcause = cardp->usb_event_cause;
752 /* Re-submit rx urb here to avoid event lost issue */
753 if_usb_submit_rx_urb(priv);
754 return 0;
755}
756
3874d0fe 757static int reset_device(wlan_private *priv)
876c9d3a
MT		 758{
759 int ret;
760
3874d0fe 761 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 762 ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
763 cmd_act_halt, 0, 0, NULL);
764 msleep_interruptible(10);
765
3874d0fe 766 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
876c9d3a
MT		 767 return ret;
768}
769
770int libertas_sbi_unregister_dev(wlan_private * priv)
771{
772 int ret = 0;
773
774 /* Need to send a Reset command to device before USB resources freed
775 * and wlan_remove_card() called, then device can handle FW download
776 * again.
777 */
778 if (priv)
779 reset_device(priv);
780
781 return ret;
782}
783
784
785/**
786 * @brief This function register usb device and initialize parameter
787 * @param priv pointer to wlan_private
788 * @return 0 or -1
789 */
790int libertas_sbi_register_dev(wlan_private * priv)
791{
876c9d3a 792 struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
9012b28a
HS		 793
794 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 795
796 cardp->priv = priv;
797 cardp->eth_dev = priv->wlan_dev.netdev;
798 priv->hotplug_device = &(cardp->udev->dev);
799
800 SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
51d84f50 801 SET_NETDEV_DEV(priv->mesh_dev, &(cardp->udev->dev));
876c9d3a 802
9012b28a 803 lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
876c9d3a
MT		 804 cardp->udev);
805
9012b28a 806 lbs_deb_leave(LBS_DEB_USB);
876c9d3a
MT		 807 return 0;
808}
809
810
811
812int libertas_sbi_prog_firmware(wlan_private * priv)
813{
814 struct usb_card_rec *cardp = priv->wlan_dev.card;
815 int i = 0;
816 static int reset_count = 10;
9012b28a 817 int ret = 0;
876c9d3a 818
9012b28a 819 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 820
821 cardp->rinfo.priv = priv;
822
823restart:
824 if (if_usb_submit_rx_urb_fwload(priv) < 0) {
9012b28a
HS		 825 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
826 ret = -1;
827 goto done;
876c9d3a
MT		 828 }
829
876c9d3a
MT		 830 cardp->bootcmdresp = 0;
831 do {
832 int j = 0;
833 i++;
834 /* Issue Boot command = 1, Boot from Download-FW */
835 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
836 /* wait for command response */
837 do {
838 j++;
839 msleep_interruptible(100);
840 } while (cardp->bootcmdresp == 0 && j < 10);
841 } while (cardp->bootcmdresp == 0 && i < 5);
842
843 if (cardp->bootcmdresp == 0) {
844 if (--reset_count >= 0) {
845 libertas_do_reset(priv);
846 goto restart;
847 }
848 return -1;
849 }
876c9d3a
MT		 850
851 i = 0;
852 priv->adapter->fw_ready = 0;
853
854 cardp->totalbytes = 0;
855 cardp->fwlastblksent = 0;
856 cardp->CRC_OK = 1;
857 cardp->fwdnldover = 0;
858 cardp->fwseqnum = -1;
859 cardp->totalbytes = 0;
860 cardp->fwfinalblk = 0;
861
862 if_prog_firmware(priv);
863
864 do {
9012b28a 865 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
876c9d3a
MT		 866 i++;
867 msleep_interruptible(100);
868 if (priv->adapter->surpriseremoved || i >= 20)
869 break;
870 } while (!cardp->fwdnldover);
871
872 if (!cardp->fwdnldover) {
873 lbs_pr_info("failed to load fw, resetting device!\n");
874 if (--reset_count >= 0) {
875 libertas_do_reset(priv);
876 goto restart;
877 }
878
879 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
9012b28a
HS		 880 ret = -1;
881 goto done;
876c9d3a
MT		 882 }
883
884 if_usb_submit_rx_urb(priv);
885
886 /* Delay 200 ms to waiting for the FW ready */
887 msleep_interruptible(200);
888
889 priv->adapter->fw_ready = 1;
890
9012b28a
HS		 891done:
892 lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
893 return ret;
876c9d3a
MT		 894}
895
876c9d3a
MT		 896#ifdef CONFIG_PM
897static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
898{
899 struct usb_card_rec *cardp = usb_get_intfdata(intf);
900 wlan_private *priv = cardp->priv;
901
9012b28a 902 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 903
904 if (priv->adapter->psstate != PS_STATE_FULL_POWER)
905 return -1;
906
907 netif_device_detach(cardp->eth_dev);
51d84f50 908 netif_device_detach(priv->mesh_dev);
876c9d3a
MT		 909
910 /* Unlink tx & rx urb */
911 usb_kill_urb(cardp->tx_urb);
912 usb_kill_urb(cardp->rx_urb);
913
914 cardp->rx_urb_recall = 1;
915
9012b28a 916 lbs_deb_leave(LBS_DEB_USB);
876c9d3a
MT		 917 return 0;
918}
919
920static int if_usb_resume(struct usb_interface *intf)
921{
922 struct usb_card_rec *cardp = usb_get_intfdata(intf);
51d84f50 923 wlan_private *priv = cardp->priv;
876c9d3a 924
9012b28a 925 lbs_deb_enter(LBS_DEB_USB);
876c9d3a
MT		 926
927 cardp->rx_urb_recall = 0;
928
929 if_usb_submit_rx_urb(cardp->priv);
930
931 netif_device_attach(cardp->eth_dev);
51d84f50 932 netif_device_attach(priv->mesh_dev);
876c9d3a 933
9012b28a 934 lbs_deb_leave(LBS_DEB_USB);
876c9d3a
MT		 935 return 0;
936}
937#else
938#define if_usb_suspend NULL
939#define if_usb_resume NULL
940#endif
941
942static struct usb_driver if_usb_driver = {
943 /* driver name */
944 .name = usbdriver_name,
945 /* probe function name */
946 .probe = if_usb_probe,
947 /* disconnect function name */
948 .disconnect = if_usb_disconnect,
949 /* device signature table */
950 .id_table = if_usb_table,
951 .suspend = if_usb_suspend,
952 .resume = if_usb_resume,
953};
954
955/**
956 * @brief This function registers driver.
957 * @param add pointer to add_card callback function
958 * @param remove pointer to remove card callback function
959 * @param arg pointer to call back function parameter
960 * @return dummy success variable
961 */
962int libertas_sbi_register(void)
963{
964 /*
965 * API registers the Marvell USB driver
966 * to the USB system
967 */
968 usb_register(&if_usb_driver);
969
970 /* Return success to wlan layer */
971 return 0;
972}
973
974/**
975 * @brief This function removes usb driver.
976 * @return N/A
977 */
978void libertas_sbi_unregister(void)
979{
3874d0fe
HS		 980 int i;
981
982 for (i = 0; i<libertas_found; i++) {
983 wlan_private *priv = libertas_devs[i]->priv;
984 reset_device(priv);
985 }
986
876c9d3a
MT		 987 /* API unregisters the driver from USB subsystem */
988 usb_deregister(&if_usb_driver);
876c9d3a 989}
Linux kernel - Deliverables
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