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i2c: gpio: fault-injector: refactor incomplete transfer
[linux/fpc-iii.git] / drivers / net / wireless / marvell / libertas / if_usb.c
blobffea610f67e2f661935dd6d7c0a7b4d592dbc35b
1 /*
2 * This file contains functions used in USB interface module.
3 */
4
5 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
6
7 #include <linux/delay.h>
8 #include <linux/module.h>
9 #include <linux/firmware.h>
10 #include <linux/netdevice.h>
11 #include <linux/slab.h>
12 #include <linux/usb.h>
13 #include <linux/olpc-ec.h>
14
15 #ifdef CONFIG_OLPC
16 #include <asm/olpc.h>
17 #endif
18
19 #define DRV_NAME "usb8xxx"
20
21 #include "host.h"
22 #include "decl.h"
23 #include "defs.h"
24 #include "dev.h"
25 #include "cmd.h"
26 #include "if_usb.h"
27
28 #define INSANEDEBUG 0
29 #define lbs_deb_usb2(...) do { if (INSANEDEBUG) lbs_deb_usbd(__VA_ARGS__); } while (0)
30
31 #define MESSAGE_HEADER_LEN 4
32
33 MODULE_FIRMWARE("libertas/usb8388_v9.bin");
34 MODULE_FIRMWARE("libertas/usb8388_v5.bin");
35 MODULE_FIRMWARE("libertas/usb8388.bin");
36 MODULE_FIRMWARE("libertas/usb8682.bin");
37 MODULE_FIRMWARE("usb8388.bin");
38
39 enum {
40 MODEL_UNKNOWN = 0x0,
41 MODEL_8388 = 0x1,
42 MODEL_8682 = 0x2
43 };
44
45 /* table of firmware file names */
46 static const struct lbs_fw_table fw_table[] = {
47 { MODEL_8388, "libertas/usb8388_olpc.bin", NULL },
48 { MODEL_8388, "libertas/usb8388_v9.bin", NULL },
49 { MODEL_8388, "libertas/usb8388_v5.bin", NULL },
50 { MODEL_8388, "libertas/usb8388.bin", NULL },
51 { MODEL_8388, "usb8388.bin", NULL },
52 { MODEL_8682, "libertas/usb8682.bin", NULL }
53 };
54
55 static const struct usb_device_id if_usb_table[] = {
56 /* Enter the device signature inside */
57 { USB_DEVICE(0x1286, 0x2001), .driver_info = MODEL_8388 },
58 { USB_DEVICE(0x05a3, 0x8388), .driver_info = MODEL_8388 },
59 {} /* Terminating entry */
60 };
61
62 MODULE_DEVICE_TABLE(usb, if_usb_table);
63
64 static void if_usb_receive(struct urb *urb);
65 static void if_usb_receive_fwload(struct urb *urb);
66 static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
67 const struct firmware *fw,
68 const struct firmware *unused);
69 static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
70 uint8_t *payload, uint16_t nb);
71 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
72 uint16_t nb);
73 static void if_usb_free(struct if_usb_card *cardp);
74 static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
75 static int if_usb_reset_device(struct if_usb_card *cardp);
76
77 /**
78 * if_usb_write_bulk_callback - callback function to handle the status
79 * of the URB
80 * @urb: pointer to &urb structure
81 * returns: N/A
82 */
83 static void if_usb_write_bulk_callback(struct urb *urb)
84 {
85 struct if_usb_card *cardp = (struct if_usb_card *) urb->context;
86
87 /* handle the transmission complete validations */
88
89 if (urb->status == 0) {
90 struct lbs_private *priv = cardp->priv;
91
92 lbs_deb_usb2(&urb->dev->dev, "URB status is successful\n");
93 lbs_deb_usb2(&urb->dev->dev, "Actual length transmitted %d\n",
94 urb->actual_length);
95
96 /* Boot commands such as UPDATE_FW and UPDATE_BOOT2 are not
97 * passed up to the lbs level.
98 */
99 if (priv && priv->dnld_sent != DNLD_BOOTCMD_SENT)
100 lbs_host_to_card_done(priv);
101 } else {
102 /* print the failure status number for debug */
103 pr_info("URB in failure status: %d\n", urb->status);
104 }
105 }
106
107 /**
108 * if_usb_free - free tx/rx urb, skb and rx buffer
109 * @cardp: pointer to &if_usb_card
110 * returns: N/A
111 */
112 static void if_usb_free(struct if_usb_card *cardp)
113 {
114 /* Unlink tx & rx urb */
115 usb_kill_urb(cardp->tx_urb);
116 usb_kill_urb(cardp->rx_urb);
117
118 usb_free_urb(cardp->tx_urb);
119 cardp->tx_urb = NULL;
120
121 usb_free_urb(cardp->rx_urb);
122 cardp->rx_urb = NULL;
123
124 kfree(cardp->ep_out_buf);
125 cardp->ep_out_buf = NULL;
126 }
127
128 static void if_usb_setup_firmware(struct lbs_private *priv)
129 {
130 struct if_usb_card *cardp = priv->card;
131 struct cmd_ds_set_boot2_ver b2_cmd;
132 struct cmd_ds_802_11_fw_wake_method wake_method;
133
134 b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
135 b2_cmd.action = 0;
136 b2_cmd.version = cardp->boot2_version;
137
138 if (lbs_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
139 lbs_deb_usb("Setting boot2 version failed\n");
140
141 priv->wol_gpio = 2; /* Wake via GPIO2... */
142 priv->wol_gap = 20; /* ... after 20ms */
143 lbs_host_sleep_cfg(priv, EHS_WAKE_ON_UNICAST_DATA,
144 (struct wol_config *) NULL);
145
146 wake_method.hdr.size = cpu_to_le16(sizeof(wake_method));
147 wake_method.action = cpu_to_le16(CMD_ACT_GET);
148 if (lbs_cmd_with_response(priv, CMD_802_11_FW_WAKE_METHOD, &wake_method)) {
149 netdev_info(priv->dev, "Firmware does not seem to support PS mode\n");
150 priv->fwcapinfo &= ~FW_CAPINFO_PS;
151 } else {
152 if (le16_to_cpu(wake_method.method) == CMD_WAKE_METHOD_COMMAND_INT) {
153 lbs_deb_usb("Firmware seems to support PS with wake-via-command\n");
154 } else {
155 /* The versions which boot up this way don't seem to
156 work even if we set it to the command interrupt */
157 priv->fwcapinfo &= ~FW_CAPINFO_PS;
158 netdev_info(priv->dev,
159 "Firmware doesn't wake via command interrupt; disabling PS mode\n");
160 }
161 }
162 }
163
164 static void if_usb_fw_timeo(struct timer_list *t)
165 {
166 struct if_usb_card *cardp = from_timer(cardp, t, fw_timeout);
167
168 if (cardp->fwdnldover) {
169 lbs_deb_usb("Download complete, no event. Assuming success\n");
170 } else {
171 pr_err("Download timed out\n");
172 cardp->surprise_removed = 1;
173 }
174 wake_up(&cardp->fw_wq);
175 }
176
177 #ifdef CONFIG_OLPC
178 static void if_usb_reset_olpc_card(struct lbs_private *priv)
179 {
180 printk(KERN_CRIT "Resetting OLPC wireless via EC...\n");
181 olpc_ec_cmd(0x25, NULL, 0, NULL, 0);
182 }
183 #endif
184
185 /**
186 * if_usb_probe - sets the configuration values
187 * @intf: &usb_interface pointer
188 * @id: pointer to usb_device_id
189 * returns: 0 on success, error code on failure
190 */
191 static int if_usb_probe(struct usb_interface *intf,
192 const struct usb_device_id *id)
193 {
194 struct usb_device *udev;
195 struct usb_host_interface *iface_desc;
196 struct usb_endpoint_descriptor *endpoint;
197 struct lbs_private *priv;
198 struct if_usb_card *cardp;
199 int r = -ENOMEM;
200 int i;
201
202 udev = interface_to_usbdev(intf);
203
204 cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
205 if (!cardp)
206 goto error;
207
208 timer_setup(&cardp->fw_timeout, if_usb_fw_timeo, 0);
209 init_waitqueue_head(&cardp->fw_wq);
210
211 cardp->udev = udev;
212 cardp->model = (uint32_t) id->driver_info;
213 iface_desc = intf->cur_altsetting;
214
215 lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
216 " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
217 le16_to_cpu(udev->descriptor.bcdUSB),
218 udev->descriptor.bDeviceClass,
219 udev->descriptor.bDeviceSubClass,
220 udev->descriptor.bDeviceProtocol);
221
222 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
223 endpoint = &iface_desc->endpoint[i].desc;
224 if (usb_endpoint_is_bulk_in(endpoint)) {
225 cardp->ep_in_size = le16_to_cpu(endpoint->wMaxPacketSize);
226 cardp->ep_in = usb_endpoint_num(endpoint);
227
228 lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n", cardp->ep_in);
229 lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n", cardp->ep_in_size);
230
231 } else if (usb_endpoint_is_bulk_out(endpoint)) {
232 cardp->ep_out_size = le16_to_cpu(endpoint->wMaxPacketSize);
233 cardp->ep_out = usb_endpoint_num(endpoint);
234
235 lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n", cardp->ep_out);
236 lbs_deb_usbd(&udev->dev, "Bulk out size is %d\n", cardp->ep_out_size);
237 }
238 }
239 if (!cardp->ep_out_size || !cardp->ep_in_size) {
240 lbs_deb_usbd(&udev->dev, "Endpoints not found\n");
241 goto dealloc;
242 }
243 if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
244 lbs_deb_usbd(&udev->dev, "Rx URB allocation failed\n");
245 goto dealloc;
246 }
247 if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
248 lbs_deb_usbd(&udev->dev, "Tx URB allocation failed\n");
249 goto dealloc;
250 }
251 cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, GFP_KERNEL);
252 if (!cardp->ep_out_buf) {
253 lbs_deb_usbd(&udev->dev, "Could not allocate buffer\n");
254 goto dealloc;
255 }
256
257 if (!(priv = lbs_add_card(cardp, &intf->dev)))
258 goto err_add_card;
259
260 cardp->priv = priv;
261
262 priv->hw_host_to_card = if_usb_host_to_card;
263 priv->enter_deep_sleep = NULL;
264 priv->exit_deep_sleep = NULL;
265 priv->reset_deep_sleep_wakeup = NULL;
266 priv->is_polling = false;
267 #ifdef CONFIG_OLPC
268 if (machine_is_olpc())
269 priv->reset_card = if_usb_reset_olpc_card;
270 #endif
271
272 cardp->boot2_version = udev->descriptor.bcdDevice;
273
274 usb_get_dev(udev);
275 usb_set_intfdata(intf, cardp);
276
277 r = lbs_get_firmware_async(priv, &udev->dev, cardp->model,
278 fw_table, if_usb_prog_firmware);
279 if (r)
280 goto err_get_fw;
281
282 return 0;
283
284 err_get_fw:
285 lbs_remove_card(priv);
286 err_add_card:
287 if_usb_reset_device(cardp);
288 dealloc:
289 if_usb_free(cardp);
290
291 error:
292 return r;
293 }
294
295 /**
296 * if_usb_disconnect - free resource and cleanup
297 * @intf: USB interface structure
298 * returns: N/A
299 */
300 static void if_usb_disconnect(struct usb_interface *intf)
301 {
302 struct if_usb_card *cardp = usb_get_intfdata(intf);
303 struct lbs_private *priv = cardp->priv;
304
305 cardp->surprise_removed = 1;
306
307 if (priv) {
308 lbs_stop_card(priv);
309 lbs_remove_card(priv);
310 }
311
312 /* Unlink and free urb */
313 if_usb_free(cardp);
314
315 usb_set_intfdata(intf, NULL);
316 usb_put_dev(interface_to_usbdev(intf));
317 }
318
319 /**
320 * if_usb_send_fw_pkt - download FW
321 * @cardp: pointer to &struct if_usb_card
322 * returns: 0
323 */
324 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
325 {
326 struct fwdata *fwdata = cardp->ep_out_buf;
327 const uint8_t *firmware = cardp->fw->data;
328
329 /* If we got a CRC failure on the last block, back
330 up and retry it */
331 if (!cardp->CRC_OK) {
332 cardp->totalbytes = cardp->fwlastblksent;
333 cardp->fwseqnum--;
334 }
335
336 lbs_deb_usb2(&cardp->udev->dev, "totalbytes = %d\n",
337 cardp->totalbytes);
338
339 /* struct fwdata (which we sent to the card) has an
340 extra __le32 field in between the header and the data,
341 which is not in the struct fwheader in the actual
342 firmware binary. Insert the seqnum in the middle... */
343 memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
344 sizeof(struct fwheader));
345
346 cardp->fwlastblksent = cardp->totalbytes;
347 cardp->totalbytes += sizeof(struct fwheader);
348
349 memcpy(fwdata->data, &firmware[cardp->totalbytes],
350 le32_to_cpu(fwdata->hdr.datalength));
351
352 lbs_deb_usb2(&cardp->udev->dev, "Data length = %d\n",
353 le32_to_cpu(fwdata->hdr.datalength));
354
355 fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
356 cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
357
358 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
359 le32_to_cpu(fwdata->hdr.datalength));
360
361 if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
362 lbs_deb_usb2(&cardp->udev->dev, "There are data to follow\n");
363 lbs_deb_usb2(&cardp->udev->dev, "seqnum = %d totalbytes = %d\n",
364 cardp->fwseqnum, cardp->totalbytes);
365 } else if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
366 lbs_deb_usb2(&cardp->udev->dev, "Host has finished FW downloading\n");
367 lbs_deb_usb2(&cardp->udev->dev, "Donwloading FW JUMP BLOCK\n");
368
369 cardp->fwfinalblk = 1;
370 }
371
372 lbs_deb_usb2(&cardp->udev->dev, "Firmware download done; size %d\n",
373 cardp->totalbytes);
374
375 return 0;
376 }
377
378 static int if_usb_reset_device(struct if_usb_card *cardp)
379 {
380 struct cmd_header *cmd = cardp->ep_out_buf + 4;
381 int ret;
382
383 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
384
385 cmd->command = cpu_to_le16(CMD_802_11_RESET);
386 cmd->size = cpu_to_le16(sizeof(cmd));
387 cmd->result = cpu_to_le16(0);
388 cmd->seqnum = cpu_to_le16(0x5a5a);
389 usb_tx_block(cardp, cardp->ep_out_buf, 4 + sizeof(struct cmd_header));
390
391 msleep(100);
392 ret = usb_reset_device(cardp->udev);
393 msleep(100);
394
395 #ifdef CONFIG_OLPC
396 if (ret && machine_is_olpc())
397 if_usb_reset_olpc_card(NULL);
398 #endif
399
400 return ret;
401 }
402
403 /**
404 * usb_tx_block - transfer the data to the device
405 * @cardp: pointer to &struct if_usb_card
406 * @payload: pointer to payload data
407 * @nb: data length
408 * returns: 0 for success or negative error code
409 */
410 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload, uint16_t nb)
411 {
412 int ret;
413
414 /* check if device is removed */
415 if (cardp->surprise_removed) {
416 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
417 ret = -ENODEV;
418 goto tx_ret;
419 }
420
421 usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
422 usb_sndbulkpipe(cardp->udev,
423 cardp->ep_out),
424 payload, nb, if_usb_write_bulk_callback, cardp);
425
426 cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
427
428 if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
429 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
430 } else {
431 lbs_deb_usb2(&cardp->udev->dev, "usb_submit_urb success\n");
432 ret = 0;
433 }
434
435 tx_ret:
436 return ret;
437 }
438
439 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
440 void (*callbackfn)(struct urb *urb))
441 {
442 struct sk_buff *skb;
443 int ret = -1;
444
445 if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
446 pr_err("No free skb\n");
447 goto rx_ret;
448 }
449
450 cardp->rx_skb = skb;
451
452 /* Fill the receive configuration URB and initialise the Rx call back */
453 usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
454 usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
455 skb->data + IPFIELD_ALIGN_OFFSET,
456 MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
457 cardp);
458
459 cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
460
461 lbs_deb_usb2(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
462 if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
463 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
464 kfree_skb(skb);
465 cardp->rx_skb = NULL;
466 ret = -1;
467 } else {
468 lbs_deb_usb2(&cardp->udev->dev, "Submit Rx URB success\n");
469 ret = 0;
470 }
471
472 rx_ret:
473 return ret;
474 }
475
476 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
477 {
478 return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
479 }
480
481 static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
482 {
483 return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
484 }
485
486 static void if_usb_receive_fwload(struct urb *urb)
487 {
488 struct if_usb_card *cardp = urb->context;
489 struct sk_buff *skb = cardp->rx_skb;
490 struct fwsyncheader *syncfwheader;
491 struct bootcmdresp bootcmdresp;
492
493 if (urb->status) {
494 lbs_deb_usbd(&cardp->udev->dev,
495 "URB status is failed during fw load\n");
496 kfree_skb(skb);
497 return;
498 }
499
500 if (cardp->fwdnldover) {
501 __le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
502
503 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
504 tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
505 pr_info("Firmware ready event received\n");
506 wake_up(&cardp->fw_wq);
507 } else {
508 lbs_deb_usb("Waiting for confirmation; got %x %x\n",
509 le32_to_cpu(tmp[0]), le32_to_cpu(tmp[1]));
510 if_usb_submit_rx_urb_fwload(cardp);
511 }
512 kfree_skb(skb);
513 return;
514 }
515 if (cardp->bootcmdresp <= 0) {
516 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
517 sizeof(bootcmdresp));
518
519 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
520 kfree_skb(skb);
521 if_usb_submit_rx_urb_fwload(cardp);
522 cardp->bootcmdresp = BOOT_CMD_RESP_OK;
523 lbs_deb_usbd(&cardp->udev->dev,
524 "Received valid boot command response\n");
525 return;
526 }
527 if (bootcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
528 if (bootcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
529 bootcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
530 bootcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION)) {
531 if (!cardp->bootcmdresp)
532 pr_info("Firmware already seems alive; resetting\n");
533 cardp->bootcmdresp = -1;
534 } else {
535 pr_info("boot cmd response wrong magic number (0x%x)\n",
536 le32_to_cpu(bootcmdresp.magic));
537 }
538 } else if ((bootcmdresp.cmd != BOOT_CMD_FW_BY_USB) &&
539 (bootcmdresp.cmd != BOOT_CMD_UPDATE_FW) &&
540 (bootcmdresp.cmd != BOOT_CMD_UPDATE_BOOT2)) {
541 pr_info("boot cmd response cmd_tag error (%d)\n",
542 bootcmdresp.cmd);
543 } else if (bootcmdresp.result != BOOT_CMD_RESP_OK) {
544 pr_info("boot cmd response result error (%d)\n",
545 bootcmdresp.result);
546 } else {
547 cardp->bootcmdresp = 1;
548 lbs_deb_usbd(&cardp->udev->dev,
549 "Received valid boot command response\n");
550 }
551 kfree_skb(skb);
552 if_usb_submit_rx_urb_fwload(cardp);
553 return;
554 }
555
556 syncfwheader = kmemdup(skb->data + IPFIELD_ALIGN_OFFSET,
557 sizeof(struct fwsyncheader), GFP_ATOMIC);
558 if (!syncfwheader) {
559 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
560 kfree_skb(skb);
561 return;
562 }
563
564 if (!syncfwheader->cmd) {
565 lbs_deb_usb2(&cardp->udev->dev, "FW received Blk with correct CRC\n");
566 lbs_deb_usb2(&cardp->udev->dev, "FW received Blk seqnum = %d\n",
567 le32_to_cpu(syncfwheader->seqnum));
568 cardp->CRC_OK = 1;
569 } else {
570 lbs_deb_usbd(&cardp->udev->dev, "FW received Blk with CRC error\n");
571 cardp->CRC_OK = 0;
572 }
573
574 kfree_skb(skb);
575
576 /* Give device 5s to either write firmware to its RAM or eeprom */
577 mod_timer(&cardp->fw_timeout, jiffies + (HZ*5));
578
579 if (cardp->fwfinalblk) {
580 cardp->fwdnldover = 1;
581 goto exit;
582 }
583
584 if_usb_send_fw_pkt(cardp);
585
586 exit:
587 if_usb_submit_rx_urb_fwload(cardp);
588
589 kfree(syncfwheader);
590 }
591
592 #define MRVDRV_MIN_PKT_LEN 30
593
594 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
595 struct if_usb_card *cardp,
596 struct lbs_private *priv)
597 {
598 if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
599 || recvlength < MRVDRV_MIN_PKT_LEN) {
600 lbs_deb_usbd(&cardp->udev->dev, "Packet length is Invalid\n");
601 kfree_skb(skb);
602 return;
603 }
604
605 skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
606 skb_put(skb, recvlength);
607 skb_pull(skb, MESSAGE_HEADER_LEN);
608
609 lbs_process_rxed_packet(priv, skb);
610 }
611
612 static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
613 struct sk_buff *skb,
614 struct if_usb_card *cardp,
615 struct lbs_private *priv)
616 {
617 u8 i;
618
619 if (recvlength > LBS_CMD_BUFFER_SIZE) {
620 lbs_deb_usbd(&cardp->udev->dev,
621 "The receive buffer is too large\n");
622 kfree_skb(skb);
623 return;
624 }
625
626 BUG_ON(!in_interrupt());
627
628 spin_lock(&priv->driver_lock);
629
630 i = (priv->resp_idx == 0) ? 1 : 0;
631 BUG_ON(priv->resp_len[i]);
632 priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN);
633 memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN,
634 priv->resp_len[i]);
635 kfree_skb(skb);
636 lbs_notify_command_response(priv, i);
637
638 spin_unlock(&priv->driver_lock);
639
640 lbs_deb_usbd(&cardp->udev->dev,
641 "Wake up main thread to handle cmd response\n");
642 }
643
644 /**
645 * if_usb_receive - read the packet into the upload buffer,
646 * wake up the main thread and initialise the Rx callack
647 *
648 * @urb: pointer to &struct urb
649 * returns: N/A
650 */
651 static void if_usb_receive(struct urb *urb)
652 {
653 struct if_usb_card *cardp = urb->context;
654 struct sk_buff *skb = cardp->rx_skb;
655 struct lbs_private *priv = cardp->priv;
656 int recvlength = urb->actual_length;
657 uint8_t *recvbuff = NULL;
658 uint32_t recvtype = 0;
659 __le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
660 uint32_t event;
661
662 if (recvlength) {
663 if (urb->status) {
664 lbs_deb_usbd(&cardp->udev->dev, "RX URB failed: %d\n",
665 urb->status);
666 kfree_skb(skb);
667 goto setup_for_next;
668 }
669
670 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
671 recvtype = le32_to_cpu(pkt[0]);
672 lbs_deb_usbd(&cardp->udev->dev,
673 "Recv length = 0x%x, Recv type = 0x%X\n",
674 recvlength, recvtype);
675 } else if (urb->status) {
676 kfree_skb(skb);
677 return;
678 }
679
680 switch (recvtype) {
681 case CMD_TYPE_DATA:
682 process_cmdtypedata(recvlength, skb, cardp, priv);
683 break;
684
685 case CMD_TYPE_REQUEST:
686 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
687 break;
688
689 case CMD_TYPE_INDICATION:
690 /* Event handling */
691 event = le32_to_cpu(pkt[1]);
692 lbs_deb_usbd(&cardp->udev->dev, "**EVENT** 0x%X\n", event);
693 kfree_skb(skb);
694
695 /* Icky undocumented magic special case */
696 if (event & 0xffff0000) {
697 u32 trycount = (event & 0xffff0000) >> 16;
698
699 lbs_send_tx_feedback(priv, trycount);
700 } else
701 lbs_queue_event(priv, event & 0xFF);
702 break;
703
704 default:
705 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
706 recvtype);
707 kfree_skb(skb);
708 break;
709 }
710
711 setup_for_next:
712 if_usb_submit_rx_urb(cardp);
713 }
714
715 /**
716 * if_usb_host_to_card - downloads data to FW
717 * @priv: pointer to &struct lbs_private structure
718 * @type: type of data
719 * @payload: pointer to data buffer
720 * @nb: number of bytes
721 * returns: 0 for success or negative error code
722 */
723 static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
724 uint8_t *payload, uint16_t nb)
725 {
726 struct if_usb_card *cardp = priv->card;
727
728 lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
729 lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
730
731 if (type == MVMS_CMD) {
732 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
733 priv->dnld_sent = DNLD_CMD_SENT;
734 } else {
735 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
736 priv->dnld_sent = DNLD_DATA_SENT;
737 }
738
739 memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
740
741 return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN);
742 }
743
744 /**
745 * if_usb_issue_boot_command - issues Boot command to the Boot2 code
746 * @cardp: pointer to &if_usb_card
747 * @ivalue: 1:Boot from FW by USB-Download
748 * 2:Boot from FW in EEPROM
749 * returns: 0 for success or negative error code
750 */
751 static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
752 {
753 struct bootcmd *bootcmd = cardp->ep_out_buf;
754
755 /* Prepare command */
756 bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
757 bootcmd->cmd = ivalue;
758 memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
759
760 /* Issue command */
761 usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd));
762
763 return 0;
764 }
765
766
767 /**
768 * check_fwfile_format - check the validity of Boot2/FW image
769 *
770 * @data: pointer to image
771 * @totlen: image length
772 * returns: 0 (good) or 1 (failure)
773 */
774 static int check_fwfile_format(const uint8_t *data, uint32_t totlen)
775 {
776 uint32_t bincmd, exit;
777 uint32_t blksize, offset, len;
778 int ret;
779
780 ret = 1;
781 exit = len = 0;
782
783 do {
784 struct fwheader *fwh = (void *)data;
785
786 bincmd = le32_to_cpu(fwh->dnldcmd);
787 blksize = le32_to_cpu(fwh->datalength);
788 switch (bincmd) {
789 case FW_HAS_DATA_TO_RECV:
790 offset = sizeof(struct fwheader) + blksize;
791 data += offset;
792 len += offset;
793 if (len >= totlen)
794 exit = 1;
795 break;
796 case FW_HAS_LAST_BLOCK:
797 exit = 1;
798 ret = 0;
799 break;
800 default:
801 exit = 1;
802 break;
803 }
804 } while (!exit);
805
806 if (ret)
807 pr_err("firmware file format check FAIL\n");
808 else
809 lbs_deb_fw("firmware file format check PASS\n");
810
811 return ret;
812 }
813
814 static void if_usb_prog_firmware(struct lbs_private *priv, int ret,
815 const struct firmware *fw,
816 const struct firmware *unused)
817 {
818 struct if_usb_card *cardp = priv->card;
819 int i = 0;
820 static int reset_count = 10;
821
822 if (ret) {
823 pr_err("failed to find firmware (%d)\n", ret);
824 goto done;
825 }
826
827 cardp->fw = fw;
828 if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) {
829 ret = -EINVAL;
830 goto done;
831 }
832
833 /* Cancel any pending usb business */
834 usb_kill_urb(cardp->rx_urb);
835 usb_kill_urb(cardp->tx_urb);
836
837 cardp->fwlastblksent = 0;
838 cardp->fwdnldover = 0;
839 cardp->totalbytes = 0;
840 cardp->fwfinalblk = 0;
841 cardp->bootcmdresp = 0;
842
843 restart:
844 if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
845 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
846 ret = -EIO;
847 goto done;
848 }
849
850 cardp->bootcmdresp = 0;
851 do {
852 int j = 0;
853 i++;
854 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
855 /* wait for command response */
856 do {
857 j++;
858 msleep_interruptible(100);
859 } while (cardp->bootcmdresp == 0 && j < 10);
860 } while (cardp->bootcmdresp == 0 && i < 5);
861
862 if (cardp->bootcmdresp == BOOT_CMD_RESP_NOT_SUPPORTED) {
863 /* Return to normal operation */
864 ret = -EOPNOTSUPP;
865 usb_kill_urb(cardp->rx_urb);
866 usb_kill_urb(cardp->tx_urb);
867 if (if_usb_submit_rx_urb(cardp) < 0)
868 ret = -EIO;
869 goto done;
870 } else if (cardp->bootcmdresp <= 0) {
871 if (--reset_count >= 0) {
872 if_usb_reset_device(cardp);
873 goto restart;
874 }
875 ret = -EIO;
876 goto done;
877 }
878
879 i = 0;
880
881 cardp->totalbytes = 0;
882 cardp->fwlastblksent = 0;
883 cardp->CRC_OK = 1;
884 cardp->fwdnldover = 0;
885 cardp->fwseqnum = -1;
886 cardp->totalbytes = 0;
887 cardp->fwfinalblk = 0;
888
889 /* Send the first firmware packet... */
890 if_usb_send_fw_pkt(cardp);
891
892 /* ... and wait for the process to complete */
893 wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
894
895 del_timer_sync(&cardp->fw_timeout);
896 usb_kill_urb(cardp->rx_urb);
897
898 if (!cardp->fwdnldover) {
899 pr_info("failed to load fw, resetting device!\n");
900 if (--reset_count >= 0) {
901 if_usb_reset_device(cardp);
902 goto restart;
903 }
904
905 pr_info("FW download failure, time = %d ms\n", i * 100);
906 ret = -EIO;
907 goto done;
908 }
909
910 cardp->priv->fw_ready = 1;
911 if_usb_submit_rx_urb(cardp);
912
913 if (lbs_start_card(priv))
914 goto done;
915
916 if_usb_setup_firmware(priv);
917
918 /*
919 * EHS_REMOVE_WAKEUP is not supported on all versions of the firmware.
920 */
921 priv->wol_criteria = EHS_REMOVE_WAKEUP;
922 if (lbs_host_sleep_cfg(priv, priv->wol_criteria, NULL))
923 priv->ehs_remove_supported = false;
924
925 done:
926 cardp->fw = NULL;
927 }
928
929
930 #ifdef CONFIG_PM
931 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
932 {
933 struct if_usb_card *cardp = usb_get_intfdata(intf);
934 struct lbs_private *priv = cardp->priv;
935 int ret;
936
937 if (priv->psstate != PS_STATE_FULL_POWER) {
938 ret = -1;
939 goto out;
940 }
941
942 #ifdef CONFIG_OLPC
943 if (machine_is_olpc()) {
944 if (priv->wol_criteria == EHS_REMOVE_WAKEUP)
945 olpc_ec_wakeup_clear(EC_SCI_SRC_WLAN);
946 else
947 olpc_ec_wakeup_set(EC_SCI_SRC_WLAN);
948 }
949 #endif
950
951 ret = lbs_suspend(priv);
952 if (ret)
953 goto out;
954
955 /* Unlink tx & rx urb */
956 usb_kill_urb(cardp->tx_urb);
957 usb_kill_urb(cardp->rx_urb);
958
959 out:
960 return ret;
961 }
962
963 static int if_usb_resume(struct usb_interface *intf)
964 {
965 struct if_usb_card *cardp = usb_get_intfdata(intf);
966 struct lbs_private *priv = cardp->priv;
967
968 if_usb_submit_rx_urb(cardp);
969
970 lbs_resume(priv);
971
972 return 0;
973 }
974 #else
975 #define if_usb_suspend NULL
976 #define if_usb_resume NULL
977 #endif
978
979 static struct usb_driver if_usb_driver = {
980 .name = DRV_NAME,
981 .probe = if_usb_probe,
982 .disconnect = if_usb_disconnect,
983 .id_table = if_usb_table,
984 .suspend = if_usb_suspend,
985 .resume = if_usb_resume,
986 .reset_resume = if_usb_resume,
987 .disable_hub_initiated_lpm = 1,
988 };
989
990 module_usb_driver(if_usb_driver);
991
992 MODULE_DESCRIPTION("8388 USB WLAN Driver");
993 MODULE_AUTHOR("Marvell International Ltd. and Red Hat, Inc.");
994 MODULE_LICENSE("GPL");
Linux with added FPC-III support