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Commit | Line | Data |
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727c26ed PO |
1 | /* |
2 | * linux/drivers/net/wireless/libertas/if_sdio.c | |
3 | * | |
ad3868b2 | 4 | * Copyright 2007-2008 Pierre Ossman |
727c26ed PO |
5 | * |
6 | * Inspired by if_cs.c, Copyright 2007 Holger Schurig | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or (at | |
11 | * your option) any later version. | |
12 | * | |
13 | * This hardware has more or less no CMD53 support, so all registers | |
14 | * must be accessed using sdio_readb()/sdio_writeb(). | |
15 | * | |
16 | * Transfers must be in one transaction or the firmware goes bonkers. | |
17 | * This means that the transfer must either be small enough to do a | |
18 | * byte based transfer or it must be padded to a multiple of the | |
19 | * current block size. | |
20 | * | |
21 | * As SDIO is still new to the kernel, it is unfortunately common with | |
7e226272 | 22 | * bugs in the host controllers related to that. One such bug is that |
727c26ed PO |
23 | * controllers cannot do transfers that aren't a multiple of 4 bytes. |
24 | * If you don't have time to fix the host controller driver, you can | |
25 | * work around the problem by modifying if_sdio_host_to_card() and | |
26 | * if_sdio_card_to_host() to pad the data. | |
27 | */ | |
28 | ||
23827926 | 29 | #include <linux/kernel.h> |
727c26ed | 30 | #include <linux/moduleparam.h> |
5a0e3ad6 | 31 | #include <linux/slab.h> |
727c26ed PO |
32 | #include <linux/firmware.h> |
33 | #include <linux/netdevice.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/mmc/card.h> | |
36 | #include <linux/mmc/sdio_func.h> | |
37 | #include <linux/mmc/sdio_ids.h> | |
38 | ||
39 | #include "host.h" | |
40 | #include "decl.h" | |
41 | #include "defs.h" | |
42 | #include "dev.h" | |
6bc61f4d | 43 | #include "cmd.h" |
727c26ed PO |
44 | #include "if_sdio.h" |
45 | ||
6bc61f4d BZ |
46 | /* The if_sdio_remove() callback function is called when |
47 | * user removes this module from kernel space or ejects | |
48 | * the card from the slot. The driver handles these 2 cases | |
49 | * differently for SD8688 combo chip. | |
50 | * If the user is removing the module, the FUNC_SHUTDOWN | |
51 | * command for SD8688 is sent to the firmware. | |
52 | * If the card is removed, there is no need to send this command. | |
53 | * | |
54 | * The variable 'user_rmmod' is used to distinguish these two | |
55 | * scenarios. This flag is initialized as FALSE in case the card | |
56 | * is removed, and will be set to TRUE for module removal when | |
57 | * module_exit function is called. | |
58 | */ | |
59 | static u8 user_rmmod; | |
60 | ||
10078321 HS |
61 | static char *lbs_helper_name = NULL; |
62 | module_param_named(helper_name, lbs_helper_name, charp, 0644); | |
727c26ed | 63 | |
10078321 HS |
64 | static char *lbs_fw_name = NULL; |
65 | module_param_named(fw_name, lbs_fw_name, charp, 0644); | |
727c26ed PO |
66 | |
67 | static const struct sdio_device_id if_sdio_ids[] = { | |
e45d8e53 BZ |
68 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, |
69 | SDIO_DEVICE_ID_MARVELL_LIBERTAS) }, | |
70 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, | |
71 | SDIO_DEVICE_ID_MARVELL_8688WLAN) }, | |
72 | { /* end: all zeroes */ }, | |
727c26ed PO |
73 | }; |
74 | ||
75 | MODULE_DEVICE_TABLE(sdio, if_sdio_ids); | |
76 | ||
77 | struct if_sdio_model { | |
78 | int model; | |
79 | const char *helper; | |
80 | const char *firmware; | |
81 | }; | |
82 | ||
83 | static struct if_sdio_model if_sdio_models[] = { | |
84 | { | |
85 | /* 8385 */ | |
e70a5ac5 | 86 | .model = IF_SDIO_MODEL_8385, |
727c26ed PO |
87 | .helper = "sd8385_helper.bin", |
88 | .firmware = "sd8385.bin", | |
89 | }, | |
90 | { | |
91 | /* 8686 */ | |
e70a5ac5 | 92 | .model = IF_SDIO_MODEL_8686, |
727c26ed PO |
93 | .helper = "sd8686_helper.bin", |
94 | .firmware = "sd8686.bin", | |
95 | }, | |
e45d8e53 BZ |
96 | { |
97 | /* 8688 */ | |
e70a5ac5 | 98 | .model = IF_SDIO_MODEL_8688, |
e45d8e53 BZ |
99 | .helper = "sd8688_helper.bin", |
100 | .firmware = "sd8688.bin", | |
101 | }, | |
727c26ed | 102 | }; |
a974a4bb BH |
103 | MODULE_FIRMWARE("sd8385_helper.bin"); |
104 | MODULE_FIRMWARE("sd8385.bin"); | |
105 | MODULE_FIRMWARE("sd8686_helper.bin"); | |
106 | MODULE_FIRMWARE("sd8686.bin"); | |
107 | MODULE_FIRMWARE("sd8688_helper.bin"); | |
108 | MODULE_FIRMWARE("sd8688.bin"); | |
727c26ed PO |
109 | |
110 | struct if_sdio_packet { | |
111 | struct if_sdio_packet *next; | |
112 | u16 nb; | |
113 | u8 buffer[0] __attribute__((aligned(4))); | |
114 | }; | |
115 | ||
116 | struct if_sdio_card { | |
117 | struct sdio_func *func; | |
69f9032d | 118 | struct lbs_private *priv; |
727c26ed PO |
119 | |
120 | int model; | |
121 | unsigned long ioport; | |
2c7e5798 | 122 | unsigned int scratch_reg; |
727c26ed PO |
123 | |
124 | const char *helper; | |
125 | const char *firmware; | |
126 | ||
127 | u8 buffer[65536]; | |
727c26ed PO |
128 | |
129 | spinlock_t lock; | |
130 | struct if_sdio_packet *packets; | |
9b02f419 DW |
131 | |
132 | struct workqueue_struct *workqueue; | |
727c26ed | 133 | struct work_struct packet_worker; |
b136a141 BZ |
134 | |
135 | u8 rx_unit; | |
727c26ed PO |
136 | }; |
137 | ||
138 | /********************************************************************/ | |
139 | /* I/O */ | |
140 | /********************************************************************/ | |
141 | ||
2c7e5798 BZ |
142 | /* |
143 | * For SD8385/SD8686, this function reads firmware status after | |
144 | * the image is downloaded, or reads RX packet length when | |
145 | * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received. | |
146 | * For SD8688, this function reads firmware status only. | |
147 | */ | |
727c26ed PO |
148 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) |
149 | { | |
2c7e5798 | 150 | int ret; |
727c26ed PO |
151 | u16 scratch; |
152 | ||
2c7e5798 | 153 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); |
727c26ed | 154 | if (!ret) |
2c7e5798 BZ |
155 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, |
156 | &ret) << 8; | |
727c26ed PO |
157 | |
158 | if (err) | |
159 | *err = ret; | |
160 | ||
161 | if (ret) | |
162 | return 0xffff; | |
163 | ||
164 | return scratch; | |
165 | } | |
166 | ||
b136a141 BZ |
167 | static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) |
168 | { | |
169 | int ret; | |
170 | u8 rx_unit; | |
171 | ||
172 | rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); | |
173 | ||
174 | if (ret) | |
175 | rx_unit = 0; | |
176 | ||
177 | return rx_unit; | |
178 | } | |
179 | ||
180 | static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) | |
181 | { | |
182 | int ret; | |
183 | u16 rx_len; | |
184 | ||
185 | switch (card->model) { | |
186 | case IF_SDIO_MODEL_8385: | |
187 | case IF_SDIO_MODEL_8686: | |
188 | rx_len = if_sdio_read_scratch(card, &ret); | |
189 | break; | |
190 | case IF_SDIO_MODEL_8688: | |
191 | default: /* for newer chipsets */ | |
192 | rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); | |
193 | if (!ret) | |
194 | rx_len <<= card->rx_unit; | |
195 | else | |
196 | rx_len = 0xffff; /* invalid length */ | |
197 | ||
198 | break; | |
199 | } | |
200 | ||
201 | if (err) | |
202 | *err = ret; | |
203 | ||
204 | return rx_len; | |
205 | } | |
206 | ||
727c26ed PO |
207 | static int if_sdio_handle_cmd(struct if_sdio_card *card, |
208 | u8 *buffer, unsigned size) | |
209 | { | |
7919b89c | 210 | struct lbs_private *priv = card->priv; |
727c26ed PO |
211 | int ret; |
212 | unsigned long flags; | |
7919b89c | 213 | u8 i; |
727c26ed PO |
214 | |
215 | lbs_deb_enter(LBS_DEB_SDIO); | |
216 | ||
ddac4526 | 217 | if (size > LBS_CMD_BUFFER_SIZE) { |
727c26ed PO |
218 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
219 | (int)size); | |
220 | ret = -E2BIG; | |
221 | goto out; | |
222 | } | |
223 | ||
7919b89c | 224 | spin_lock_irqsave(&priv->driver_lock, flags); |
727c26ed | 225 | |
7919b89c HS |
226 | i = (priv->resp_idx == 0) ? 1 : 0; |
227 | BUG_ON(priv->resp_len[i]); | |
228 | priv->resp_len[i] = size; | |
229 | memcpy(priv->resp_buf[i], buffer, size); | |
230 | lbs_notify_command_response(priv, i); | |
727c26ed | 231 | |
7919b89c | 232 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); |
727c26ed PO |
233 | |
234 | ret = 0; | |
235 | ||
236 | out: | |
727c26ed | 237 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
238 | return ret; |
239 | } | |
240 | ||
241 | static int if_sdio_handle_data(struct if_sdio_card *card, | |
242 | u8 *buffer, unsigned size) | |
243 | { | |
244 | int ret; | |
245 | struct sk_buff *skb; | |
246 | char *data; | |
247 | ||
248 | lbs_deb_enter(LBS_DEB_SDIO); | |
249 | ||
250 | if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { | |
251 | lbs_deb_sdio("response packet too large (%d bytes)\n", | |
252 | (int)size); | |
253 | ret = -E2BIG; | |
254 | goto out; | |
255 | } | |
256 | ||
51e6b712 | 257 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); |
727c26ed PO |
258 | if (!skb) { |
259 | ret = -ENOMEM; | |
260 | goto out; | |
261 | } | |
262 | ||
51e6b712 PO |
263 | skb_reserve(skb, NET_IP_ALIGN); |
264 | ||
727c26ed PO |
265 | data = skb_put(skb, size); |
266 | ||
267 | memcpy(data, buffer, size); | |
268 | ||
10078321 | 269 | lbs_process_rxed_packet(card->priv, skb); |
727c26ed PO |
270 | |
271 | ret = 0; | |
272 | ||
273 | out: | |
274 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
275 | ||
276 | return ret; | |
277 | } | |
278 | ||
279 | static int if_sdio_handle_event(struct if_sdio_card *card, | |
280 | u8 *buffer, unsigned size) | |
281 | { | |
282 | int ret; | |
727c26ed PO |
283 | u32 event; |
284 | ||
285 | lbs_deb_enter(LBS_DEB_SDIO); | |
286 | ||
e70a5ac5 | 287 | if (card->model == IF_SDIO_MODEL_8385) { |
727c26ed PO |
288 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); |
289 | if (ret) | |
290 | goto out; | |
f5ac2b9e BZ |
291 | |
292 | /* right shift 3 bits to get the event id */ | |
293 | event >>= 3; | |
727c26ed PO |
294 | } else { |
295 | if (size < 4) { | |
296 | lbs_deb_sdio("event packet too small (%d bytes)\n", | |
297 | (int)size); | |
298 | ret = -EINVAL; | |
299 | goto out; | |
300 | } | |
301 | event = buffer[3] << 24; | |
302 | event |= buffer[2] << 16; | |
303 | event |= buffer[1] << 8; | |
304 | event |= buffer[0] << 0; | |
727c26ed PO |
305 | } |
306 | ||
7919b89c | 307 | lbs_queue_event(card->priv, event & 0xFF); |
727c26ed PO |
308 | ret = 0; |
309 | ||
310 | out: | |
311 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
312 | ||
313 | return ret; | |
314 | } | |
315 | ||
316 | static int if_sdio_card_to_host(struct if_sdio_card *card) | |
317 | { | |
318 | int ret; | |
319 | u8 status; | |
320 | u16 size, type, chunk; | |
321 | unsigned long timeout; | |
322 | ||
323 | lbs_deb_enter(LBS_DEB_SDIO); | |
324 | ||
b136a141 | 325 | size = if_sdio_read_rx_len(card, &ret); |
727c26ed PO |
326 | if (ret) |
327 | goto out; | |
328 | ||
329 | if (size < 4) { | |
330 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", | |
331 | (int)size); | |
332 | ret = -EINVAL; | |
333 | goto out; | |
334 | } | |
335 | ||
336 | timeout = jiffies + HZ; | |
337 | while (1) { | |
338 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
339 | if (ret) | |
340 | goto out; | |
341 | if (status & IF_SDIO_IO_RDY) | |
342 | break; | |
343 | if (time_after(jiffies, timeout)) { | |
344 | ret = -ETIMEDOUT; | |
345 | goto out; | |
346 | } | |
347 | mdelay(1); | |
348 | } | |
349 | ||
350 | /* | |
351 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
352 | * goes suicidal. There's no way to guarantee that for all |
353 | * controllers, but we can at least try. | |
727c26ed | 354 | */ |
ad3868b2 | 355 | chunk = sdio_align_size(card->func, size); |
727c26ed PO |
356 | |
357 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); | |
358 | if (ret) | |
359 | goto out; | |
360 | ||
361 | chunk = card->buffer[0] | (card->buffer[1] << 8); | |
362 | type = card->buffer[2] | (card->buffer[3] << 8); | |
363 | ||
364 | lbs_deb_sdio("packet of type %d and size %d bytes\n", | |
365 | (int)type, (int)chunk); | |
366 | ||
367 | if (chunk > size) { | |
368 | lbs_deb_sdio("packet fragment (%d > %d)\n", | |
369 | (int)chunk, (int)size); | |
370 | ret = -EINVAL; | |
371 | goto out; | |
372 | } | |
373 | ||
374 | if (chunk < size) { | |
375 | lbs_deb_sdio("packet fragment (%d < %d)\n", | |
376 | (int)chunk, (int)size); | |
377 | } | |
378 | ||
379 | switch (type) { | |
380 | case MVMS_CMD: | |
381 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); | |
382 | if (ret) | |
383 | goto out; | |
384 | break; | |
385 | case MVMS_DAT: | |
386 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); | |
387 | if (ret) | |
388 | goto out; | |
389 | break; | |
390 | case MVMS_EVENT: | |
391 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); | |
392 | if (ret) | |
393 | goto out; | |
394 | break; | |
395 | default: | |
396 | lbs_deb_sdio("invalid type (%d) from firmware\n", | |
397 | (int)type); | |
398 | ret = -EINVAL; | |
399 | goto out; | |
400 | } | |
401 | ||
402 | out: | |
403 | if (ret) | |
404 | lbs_pr_err("problem fetching packet from firmware\n"); | |
405 | ||
406 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
407 | ||
408 | return ret; | |
409 | } | |
410 | ||
411 | static void if_sdio_host_to_card_worker(struct work_struct *work) | |
412 | { | |
413 | struct if_sdio_card *card; | |
414 | struct if_sdio_packet *packet; | |
415 | unsigned long timeout; | |
416 | u8 status; | |
417 | int ret; | |
418 | unsigned long flags; | |
419 | ||
420 | lbs_deb_enter(LBS_DEB_SDIO); | |
421 | ||
422 | card = container_of(work, struct if_sdio_card, packet_worker); | |
423 | ||
424 | while (1) { | |
425 | spin_lock_irqsave(&card->lock, flags); | |
426 | packet = card->packets; | |
427 | if (packet) | |
428 | card->packets = packet->next; | |
429 | spin_unlock_irqrestore(&card->lock, flags); | |
430 | ||
431 | if (!packet) | |
432 | break; | |
433 | ||
434 | sdio_claim_host(card->func); | |
435 | ||
436 | timeout = jiffies + HZ; | |
437 | while (1) { | |
438 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
439 | if (ret) | |
440 | goto release; | |
441 | if (status & IF_SDIO_IO_RDY) | |
442 | break; | |
443 | if (time_after(jiffies, timeout)) { | |
444 | ret = -ETIMEDOUT; | |
445 | goto release; | |
446 | } | |
447 | mdelay(1); | |
448 | } | |
449 | ||
450 | ret = sdio_writesb(card->func, card->ioport, | |
451 | packet->buffer, packet->nb); | |
452 | if (ret) | |
453 | goto release; | |
454 | release: | |
455 | sdio_release_host(card->func); | |
456 | ||
457 | kfree(packet); | |
458 | } | |
459 | ||
460 | lbs_deb_leave(LBS_DEB_SDIO); | |
461 | } | |
462 | ||
463 | /********************************************************************/ | |
464 | /* Firmware */ | |
465 | /********************************************************************/ | |
466 | ||
467 | static int if_sdio_prog_helper(struct if_sdio_card *card) | |
468 | { | |
469 | int ret; | |
470 | u8 status; | |
471 | const struct firmware *fw; | |
472 | unsigned long timeout; | |
473 | u8 *chunk_buffer; | |
474 | u32 chunk_size; | |
6dfff895 | 475 | const u8 *firmware; |
727c26ed PO |
476 | size_t size; |
477 | ||
478 | lbs_deb_enter(LBS_DEB_SDIO); | |
479 | ||
480 | ret = request_firmware(&fw, card->helper, &card->func->dev); | |
481 | if (ret) { | |
482 | lbs_pr_err("can't load helper firmware\n"); | |
483 | goto out; | |
484 | } | |
485 | ||
486 | chunk_buffer = kzalloc(64, GFP_KERNEL); | |
487 | if (!chunk_buffer) { | |
488 | ret = -ENOMEM; | |
489 | goto release_fw; | |
490 | } | |
491 | ||
492 | sdio_claim_host(card->func); | |
493 | ||
494 | ret = sdio_set_block_size(card->func, 32); | |
495 | if (ret) | |
496 | goto release; | |
497 | ||
498 | firmware = fw->data; | |
499 | size = fw->size; | |
500 | ||
501 | while (size) { | |
502 | timeout = jiffies + HZ; | |
503 | while (1) { | |
504 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
505 | if (ret) | |
506 | goto release; | |
507 | if ((status & IF_SDIO_IO_RDY) && | |
508 | (status & IF_SDIO_DL_RDY)) | |
509 | break; | |
510 | if (time_after(jiffies, timeout)) { | |
511 | ret = -ETIMEDOUT; | |
512 | goto release; | |
513 | } | |
514 | mdelay(1); | |
515 | } | |
516 | ||
517 | chunk_size = min(size, (size_t)60); | |
518 | ||
c2df2efe | 519 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); |
727c26ed PO |
520 | memcpy(chunk_buffer + 4, firmware, chunk_size); |
521 | /* | |
522 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); | |
523 | */ | |
524 | ret = sdio_writesb(card->func, card->ioport, | |
525 | chunk_buffer, 64); | |
526 | if (ret) | |
527 | goto release; | |
528 | ||
529 | firmware += chunk_size; | |
530 | size -= chunk_size; | |
531 | } | |
532 | ||
533 | /* an empty block marks the end of the transfer */ | |
534 | memset(chunk_buffer, 0, 4); | |
535 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); | |
536 | if (ret) | |
537 | goto release; | |
538 | ||
539 | lbs_deb_sdio("waiting for helper to boot...\n"); | |
540 | ||
541 | /* wait for the helper to boot by looking at the size register */ | |
542 | timeout = jiffies + HZ; | |
543 | while (1) { | |
544 | u16 req_size; | |
545 | ||
546 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
547 | if (ret) | |
548 | goto release; | |
549 | ||
550 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
551 | if (ret) | |
552 | goto release; | |
553 | ||
554 | if (req_size != 0) | |
555 | break; | |
556 | ||
557 | if (time_after(jiffies, timeout)) { | |
558 | ret = -ETIMEDOUT; | |
559 | goto release; | |
560 | } | |
561 | ||
562 | msleep(10); | |
563 | } | |
564 | ||
565 | ret = 0; | |
566 | ||
567 | release: | |
727c26ed PO |
568 | sdio_release_host(card->func); |
569 | kfree(chunk_buffer); | |
570 | release_fw: | |
571 | release_firmware(fw); | |
572 | ||
573 | out: | |
574 | if (ret) | |
575 | lbs_pr_err("failed to load helper firmware\n"); | |
576 | ||
577 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
578 | ||
579 | return ret; | |
580 | } | |
581 | ||
582 | static int if_sdio_prog_real(struct if_sdio_card *card) | |
583 | { | |
584 | int ret; | |
585 | u8 status; | |
586 | const struct firmware *fw; | |
587 | unsigned long timeout; | |
588 | u8 *chunk_buffer; | |
589 | u32 chunk_size; | |
6dfff895 | 590 | const u8 *firmware; |
727c26ed PO |
591 | size_t size, req_size; |
592 | ||
593 | lbs_deb_enter(LBS_DEB_SDIO); | |
594 | ||
595 | ret = request_firmware(&fw, card->firmware, &card->func->dev); | |
596 | if (ret) { | |
597 | lbs_pr_err("can't load firmware\n"); | |
598 | goto out; | |
599 | } | |
600 | ||
601 | chunk_buffer = kzalloc(512, GFP_KERNEL); | |
602 | if (!chunk_buffer) { | |
603 | ret = -ENOMEM; | |
604 | goto release_fw; | |
605 | } | |
606 | ||
607 | sdio_claim_host(card->func); | |
608 | ||
609 | ret = sdio_set_block_size(card->func, 32); | |
610 | if (ret) | |
611 | goto release; | |
612 | ||
613 | firmware = fw->data; | |
614 | size = fw->size; | |
615 | ||
616 | while (size) { | |
617 | timeout = jiffies + HZ; | |
618 | while (1) { | |
619 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
620 | if (ret) | |
621 | goto release; | |
622 | if ((status & IF_SDIO_IO_RDY) && | |
623 | (status & IF_SDIO_DL_RDY)) | |
624 | break; | |
625 | if (time_after(jiffies, timeout)) { | |
626 | ret = -ETIMEDOUT; | |
627 | goto release; | |
628 | } | |
629 | mdelay(1); | |
630 | } | |
631 | ||
632 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
633 | if (ret) | |
634 | goto release; | |
635 | ||
636 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
637 | if (ret) | |
638 | goto release; | |
639 | /* | |
640 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
641 | */ | |
642 | if (req_size == 0) { | |
643 | lbs_deb_sdio("firmware helper gave up early\n"); | |
644 | ret = -EIO; | |
645 | goto release; | |
646 | } | |
647 | ||
648 | if (req_size & 0x01) { | |
649 | lbs_deb_sdio("firmware helper signalled error\n"); | |
650 | ret = -EIO; | |
651 | goto release; | |
652 | } | |
653 | ||
654 | if (req_size > size) | |
655 | req_size = size; | |
656 | ||
657 | while (req_size) { | |
658 | chunk_size = min(req_size, (size_t)512); | |
659 | ||
660 | memcpy(chunk_buffer, firmware, chunk_size); | |
661 | /* | |
662 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
663 | chunk_size, (chunk_size + 31) / 32 * 32); | |
664 | */ | |
665 | ret = sdio_writesb(card->func, card->ioport, | |
23827926 | 666 | chunk_buffer, roundup(chunk_size, 32)); |
727c26ed PO |
667 | if (ret) |
668 | goto release; | |
669 | ||
670 | firmware += chunk_size; | |
671 | size -= chunk_size; | |
672 | req_size -= chunk_size; | |
673 | } | |
674 | } | |
675 | ||
676 | ret = 0; | |
677 | ||
678 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
679 | ||
680 | /* wait for the firmware to boot */ | |
681 | timeout = jiffies + HZ; | |
682 | while (1) { | |
683 | u16 scratch; | |
684 | ||
685 | scratch = if_sdio_read_scratch(card, &ret); | |
686 | if (ret) | |
687 | goto release; | |
688 | ||
689 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
690 | break; | |
691 | ||
692 | if (time_after(jiffies, timeout)) { | |
693 | ret = -ETIMEDOUT; | |
694 | goto release; | |
695 | } | |
696 | ||
697 | msleep(10); | |
698 | } | |
699 | ||
700 | ret = 0; | |
701 | ||
702 | release: | |
727c26ed PO |
703 | sdio_release_host(card->func); |
704 | kfree(chunk_buffer); | |
705 | release_fw: | |
706 | release_firmware(fw); | |
707 | ||
708 | out: | |
709 | if (ret) | |
710 | lbs_pr_err("failed to load firmware\n"); | |
711 | ||
712 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
713 | ||
714 | return ret; | |
715 | } | |
716 | ||
717 | static int if_sdio_prog_firmware(struct if_sdio_card *card) | |
718 | { | |
719 | int ret; | |
720 | u16 scratch; | |
721 | ||
722 | lbs_deb_enter(LBS_DEB_SDIO); | |
723 | ||
724 | sdio_claim_host(card->func); | |
725 | scratch = if_sdio_read_scratch(card, &ret); | |
726 | sdio_release_host(card->func); | |
727 | ||
728 | if (ret) | |
729 | goto out; | |
730 | ||
2c7e5798 BZ |
731 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
732 | ||
727c26ed PO |
733 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
734 | lbs_deb_sdio("firmware already loaded\n"); | |
735 | goto success; | |
736 | } | |
737 | ||
738 | ret = if_sdio_prog_helper(card); | |
739 | if (ret) | |
740 | goto out; | |
741 | ||
742 | ret = if_sdio_prog_real(card); | |
743 | if (ret) | |
744 | goto out; | |
745 | ||
746 | success: | |
d26285f8 BZ |
747 | sdio_claim_host(card->func); |
748 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); | |
749 | sdio_release_host(card->func); | |
727c26ed PO |
750 | ret = 0; |
751 | ||
752 | out: | |
753 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
754 | ||
755 | return ret; | |
756 | } | |
757 | ||
758 | /*******************************************************************/ | |
759 | /* Libertas callbacks */ | |
760 | /*******************************************************************/ | |
761 | ||
69f9032d HS |
762 | static int if_sdio_host_to_card(struct lbs_private *priv, |
763 | u8 type, u8 *buf, u16 nb) | |
727c26ed PO |
764 | { |
765 | int ret; | |
766 | struct if_sdio_card *card; | |
767 | struct if_sdio_packet *packet, *cur; | |
768 | u16 size; | |
769 | unsigned long flags; | |
770 | ||
771 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); | |
772 | ||
773 | card = priv->card; | |
774 | ||
775 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { | |
776 | ret = -EINVAL; | |
777 | goto out; | |
778 | } | |
779 | ||
780 | /* | |
781 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
782 | * goes suicidal. There's no way to guarantee that for all |
783 | * controllers, but we can at least try. | |
727c26ed | 784 | */ |
ad3868b2 | 785 | size = sdio_align_size(card->func, nb + 4); |
727c26ed PO |
786 | |
787 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, | |
788 | GFP_ATOMIC); | |
789 | if (!packet) { | |
790 | ret = -ENOMEM; | |
791 | goto out; | |
792 | } | |
793 | ||
794 | packet->next = NULL; | |
795 | packet->nb = size; | |
796 | ||
797 | /* | |
798 | * SDIO specific header. | |
799 | */ | |
800 | packet->buffer[0] = (nb + 4) & 0xff; | |
801 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; | |
802 | packet->buffer[2] = type; | |
803 | packet->buffer[3] = 0; | |
804 | ||
805 | memcpy(packet->buffer + 4, buf, nb); | |
806 | ||
807 | spin_lock_irqsave(&card->lock, flags); | |
808 | ||
809 | if (!card->packets) | |
810 | card->packets = packet; | |
811 | else { | |
812 | cur = card->packets; | |
813 | while (cur->next) | |
814 | cur = cur->next; | |
815 | cur->next = packet; | |
816 | } | |
817 | ||
818 | switch (type) { | |
819 | case MVMS_CMD: | |
820 | priv->dnld_sent = DNLD_CMD_SENT; | |
821 | break; | |
822 | case MVMS_DAT: | |
823 | priv->dnld_sent = DNLD_DATA_SENT; | |
824 | break; | |
825 | default: | |
826 | lbs_deb_sdio("unknown packet type %d\n", (int)type); | |
827 | } | |
828 | ||
829 | spin_unlock_irqrestore(&card->lock, flags); | |
830 | ||
9b02f419 | 831 | queue_work(card->workqueue, &card->packet_worker); |
727c26ed PO |
832 | |
833 | ret = 0; | |
834 | ||
835 | out: | |
836 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
837 | ||
838 | return ret; | |
839 | } | |
840 | ||
49125454 AK |
841 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
842 | { | |
843 | int ret = -1; | |
844 | struct cmd_header cmd; | |
845 | ||
846 | memset(&cmd, 0, sizeof(cmd)); | |
847 | ||
848 | lbs_deb_sdio("send DEEP_SLEEP command\n"); | |
849 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), | |
850 | lbs_cmd_copyback, (unsigned long) &cmd); | |
851 | if (ret) | |
852 | lbs_pr_err("DEEP_SLEEP cmd failed\n"); | |
853 | ||
854 | mdelay(200); | |
855 | return ret; | |
856 | } | |
857 | ||
858 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) | |
859 | { | |
860 | struct if_sdio_card *card = priv->card; | |
861 | int ret = -1; | |
862 | ||
863 | lbs_deb_enter(LBS_DEB_SDIO); | |
864 | sdio_claim_host(card->func); | |
865 | ||
866 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); | |
867 | if (ret) | |
868 | lbs_pr_err("sdio_writeb failed!\n"); | |
869 | ||
870 | sdio_release_host(card->func); | |
871 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
872 | return ret; | |
873 | } | |
874 | ||
875 | static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv) | |
876 | { | |
877 | struct if_sdio_card *card = priv->card; | |
878 | int ret = -1; | |
879 | ||
880 | lbs_deb_enter(LBS_DEB_SDIO); | |
881 | sdio_claim_host(card->func); | |
882 | ||
883 | sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret); | |
884 | if (ret) | |
885 | lbs_pr_err("sdio_writeb failed!\n"); | |
886 | ||
887 | sdio_release_host(card->func); | |
888 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
889 | return ret; | |
890 | ||
891 | } | |
892 | ||
727c26ed PO |
893 | /*******************************************************************/ |
894 | /* SDIO callbacks */ | |
895 | /*******************************************************************/ | |
896 | ||
897 | static void if_sdio_interrupt(struct sdio_func *func) | |
898 | { | |
899 | int ret; | |
900 | struct if_sdio_card *card; | |
901 | u8 cause; | |
902 | ||
903 | lbs_deb_enter(LBS_DEB_SDIO); | |
904 | ||
905 | card = sdio_get_drvdata(func); | |
906 | ||
907 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); | |
908 | if (ret) | |
909 | goto out; | |
910 | ||
911 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); | |
912 | ||
913 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); | |
914 | if (ret) | |
915 | goto out; | |
916 | ||
917 | /* | |
918 | * Ignore the define name, this really means the card has | |
919 | * successfully received the command. | |
920 | */ | |
49125454 | 921 | card->priv->is_activity_detected = 1; |
e775ed7c DW |
922 | if (cause & IF_SDIO_H_INT_DNLD) |
923 | lbs_host_to_card_done(card->priv); | |
924 | ||
727c26ed PO |
925 | |
926 | if (cause & IF_SDIO_H_INT_UPLD) { | |
927 | ret = if_sdio_card_to_host(card); | |
928 | if (ret) | |
929 | goto out; | |
930 | } | |
931 | ||
932 | ret = 0; | |
933 | ||
934 | out: | |
935 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
936 | } | |
937 | ||
938 | static int if_sdio_probe(struct sdio_func *func, | |
939 | const struct sdio_device_id *id) | |
940 | { | |
941 | struct if_sdio_card *card; | |
69f9032d | 942 | struct lbs_private *priv; |
727c26ed PO |
943 | int ret, i; |
944 | unsigned int model; | |
945 | struct if_sdio_packet *packet; | |
946 | ||
947 | lbs_deb_enter(LBS_DEB_SDIO); | |
948 | ||
949 | for (i = 0;i < func->card->num_info;i++) { | |
950 | if (sscanf(func->card->info[i], | |
951 | "802.11 SDIO ID: %x", &model) == 1) | |
952 | break; | |
953 | if (sscanf(func->card->info[i], | |
954 | "ID: %x", &model) == 1) | |
955 | break; | |
e70a5ac5 BZ |
956 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
957 | model = IF_SDIO_MODEL_8385; | |
958 | break; | |
959 | } | |
727c26ed PO |
960 | } |
961 | ||
962 | if (i == func->card->num_info) { | |
963 | lbs_pr_err("unable to identify card model\n"); | |
964 | return -ENODEV; | |
965 | } | |
966 | ||
967 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
968 | if (!card) | |
969 | return -ENOMEM; | |
970 | ||
971 | card->func = func; | |
972 | card->model = model; | |
2c7e5798 BZ |
973 | |
974 | switch (card->model) { | |
975 | case IF_SDIO_MODEL_8385: | |
976 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; | |
977 | break; | |
978 | case IF_SDIO_MODEL_8686: | |
979 | card->scratch_reg = IF_SDIO_SCRATCH; | |
980 | break; | |
981 | case IF_SDIO_MODEL_8688: | |
982 | default: /* for newer chipsets */ | |
983 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
984 | break; | |
985 | } | |
986 | ||
727c26ed | 987 | spin_lock_init(&card->lock); |
9b02f419 | 988 | card->workqueue = create_workqueue("libertas_sdio"); |
727c26ed PO |
989 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
990 | ||
991 | for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) { | |
992 | if (card->model == if_sdio_models[i].model) | |
993 | break; | |
994 | } | |
995 | ||
996 | if (i == ARRAY_SIZE(if_sdio_models)) { | |
af901ca1 | 997 | lbs_pr_err("unknown card model 0x%x\n", card->model); |
727c26ed PO |
998 | ret = -ENODEV; |
999 | goto free; | |
1000 | } | |
1001 | ||
1002 | card->helper = if_sdio_models[i].helper; | |
1003 | card->firmware = if_sdio_models[i].firmware; | |
1004 | ||
10078321 | 1005 | if (lbs_helper_name) { |
727c26ed | 1006 | lbs_deb_sdio("overriding helper firmware: %s\n", |
10078321 HS |
1007 | lbs_helper_name); |
1008 | card->helper = lbs_helper_name; | |
727c26ed PO |
1009 | } |
1010 | ||
10078321 HS |
1011 | if (lbs_fw_name) { |
1012 | lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name); | |
1013 | card->firmware = lbs_fw_name; | |
727c26ed PO |
1014 | } |
1015 | ||
1016 | sdio_claim_host(func); | |
1017 | ||
1018 | ret = sdio_enable_func(func); | |
1019 | if (ret) | |
1020 | goto release; | |
1021 | ||
1022 | ret = sdio_claim_irq(func, if_sdio_interrupt); | |
1023 | if (ret) | |
1024 | goto disable; | |
1025 | ||
1026 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); | |
1027 | if (ret) | |
1028 | goto release_int; | |
1029 | ||
1030 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; | |
1031 | if (ret) | |
1032 | goto release_int; | |
1033 | ||
1034 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; | |
1035 | if (ret) | |
1036 | goto release_int; | |
1037 | ||
1038 | sdio_release_host(func); | |
1039 | ||
1040 | sdio_set_drvdata(func, card); | |
1041 | ||
1042 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " | |
1043 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", | |
1044 | func->class, func->vendor, func->device, | |
1045 | model, (unsigned)card->ioport); | |
1046 | ||
1047 | ret = if_sdio_prog_firmware(card); | |
1048 | if (ret) | |
1049 | goto reclaim; | |
1050 | ||
10078321 | 1051 | priv = lbs_add_card(card, &func->dev); |
727c26ed PO |
1052 | if (!priv) { |
1053 | ret = -ENOMEM; | |
1054 | goto reclaim; | |
1055 | } | |
1056 | ||
1057 | card->priv = priv; | |
1058 | ||
1059 | priv->card = card; | |
1060 | priv->hw_host_to_card = if_sdio_host_to_card; | |
49125454 AK |
1061 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; |
1062 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; | |
1063 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; | |
727c26ed | 1064 | |
aa21c004 | 1065 | priv->fw_ready = 1; |
727c26ed | 1066 | |
b136a141 BZ |
1067 | sdio_claim_host(func); |
1068 | ||
1069 | /* | |
1070 | * Get rx_unit if the chip is SD8688 or newer. | |
1071 | * SD8385 & SD8686 do not have rx_unit. | |
1072 | */ | |
1073 | if ((card->model != IF_SDIO_MODEL_8385) | |
1074 | && (card->model != IF_SDIO_MODEL_8686)) | |
1075 | card->rx_unit = if_sdio_read_rx_unit(card); | |
1076 | else | |
1077 | card->rx_unit = 0; | |
1078 | ||
727c26ed PO |
1079 | /* |
1080 | * Enable interrupts now that everything is set up | |
1081 | */ | |
727c26ed PO |
1082 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); |
1083 | sdio_release_host(func); | |
1084 | if (ret) | |
1085 | goto reclaim; | |
1086 | ||
d26285f8 BZ |
1087 | /* |
1088 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions | |
1089 | */ | |
6bc61f4d BZ |
1090 | if (card->model == IF_SDIO_MODEL_8688) { |
1091 | struct cmd_header cmd; | |
1092 | ||
1093 | memset(&cmd, 0, sizeof(cmd)); | |
1094 | ||
1095 | lbs_deb_sdio("send function INIT command\n"); | |
1096 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), | |
1097 | lbs_cmd_copyback, (unsigned long) &cmd)) | |
1098 | lbs_pr_alert("CMD_FUNC_INIT cmd failed\n"); | |
1099 | } | |
d26285f8 | 1100 | |
10078321 | 1101 | ret = lbs_start_card(priv); |
727c26ed PO |
1102 | if (ret) |
1103 | goto err_activate_card; | |
1104 | ||
1105 | out: | |
1106 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1107 | ||
1108 | return ret; | |
1109 | ||
1110 | err_activate_card: | |
9b02f419 DW |
1111 | flush_workqueue(card->workqueue); |
1112 | lbs_remove_card(priv); | |
727c26ed PO |
1113 | reclaim: |
1114 | sdio_claim_host(func); | |
1115 | release_int: | |
1116 | sdio_release_irq(func); | |
1117 | disable: | |
1118 | sdio_disable_func(func); | |
1119 | release: | |
1120 | sdio_release_host(func); | |
1121 | free: | |
9b02f419 | 1122 | destroy_workqueue(card->workqueue); |
727c26ed PO |
1123 | while (card->packets) { |
1124 | packet = card->packets; | |
1125 | card->packets = card->packets->next; | |
1126 | kfree(packet); | |
1127 | } | |
1128 | ||
1129 | kfree(card); | |
1130 | ||
1131 | goto out; | |
1132 | } | |
1133 | ||
1134 | static void if_sdio_remove(struct sdio_func *func) | |
1135 | { | |
1136 | struct if_sdio_card *card; | |
1137 | struct if_sdio_packet *packet; | |
1138 | ||
1139 | lbs_deb_enter(LBS_DEB_SDIO); | |
1140 | ||
1141 | card = sdio_get_drvdata(func); | |
1142 | ||
6bc61f4d BZ |
1143 | if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) { |
1144 | /* | |
1145 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1146 | * multiple functions | |
1147 | */ | |
1148 | struct cmd_header cmd; | |
1149 | ||
1150 | memset(&cmd, 0, sizeof(cmd)); | |
1151 | ||
1152 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1153 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1154 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1155 | (unsigned long) &cmd)) | |
1156 | lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); | |
1157 | } | |
d26285f8 | 1158 | |
727c26ed PO |
1159 | |
1160 | lbs_deb_sdio("call remove card\n"); | |
6bc61f4d | 1161 | lbs_stop_card(card->priv); |
10078321 | 1162 | lbs_remove_card(card->priv); |
23b149c1 | 1163 | card->priv->surpriseremoved = 1; |
727c26ed | 1164 | |
9b02f419 DW |
1165 | flush_workqueue(card->workqueue); |
1166 | destroy_workqueue(card->workqueue); | |
727c26ed PO |
1167 | |
1168 | sdio_claim_host(func); | |
1169 | sdio_release_irq(func); | |
1170 | sdio_disable_func(func); | |
1171 | sdio_release_host(func); | |
1172 | ||
1173 | while (card->packets) { | |
1174 | packet = card->packets; | |
1175 | card->packets = card->packets->next; | |
1176 | kfree(packet); | |
1177 | } | |
1178 | ||
1179 | kfree(card); | |
1180 | ||
1181 | lbs_deb_leave(LBS_DEB_SDIO); | |
1182 | } | |
1183 | ||
1184 | static struct sdio_driver if_sdio_driver = { | |
1185 | .name = "libertas_sdio", | |
1186 | .id_table = if_sdio_ids, | |
1187 | .probe = if_sdio_probe, | |
1188 | .remove = if_sdio_remove, | |
1189 | }; | |
1190 | ||
1191 | /*******************************************************************/ | |
1192 | /* Module functions */ | |
1193 | /*******************************************************************/ | |
1194 | ||
4fb910fd | 1195 | static int __init if_sdio_init_module(void) |
727c26ed PO |
1196 | { |
1197 | int ret = 0; | |
1198 | ||
1199 | lbs_deb_enter(LBS_DEB_SDIO); | |
1200 | ||
1201 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1202 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1203 | ||
1204 | ret = sdio_register_driver(&if_sdio_driver); | |
1205 | ||
6bc61f4d BZ |
1206 | /* Clear the flag in case user removes the card. */ |
1207 | user_rmmod = 0; | |
1208 | ||
727c26ed PO |
1209 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
1210 | ||
1211 | return ret; | |
1212 | } | |
1213 | ||
4fb910fd | 1214 | static void __exit if_sdio_exit_module(void) |
727c26ed PO |
1215 | { |
1216 | lbs_deb_enter(LBS_DEB_SDIO); | |
1217 | ||
6bc61f4d BZ |
1218 | /* Set the flag as user is removing this module. */ |
1219 | user_rmmod = 1; | |
d26285f8 | 1220 | |
727c26ed PO |
1221 | sdio_unregister_driver(&if_sdio_driver); |
1222 | ||
1223 | lbs_deb_leave(LBS_DEB_SDIO); | |
1224 | } | |
1225 | ||
1226 | module_init(if_sdio_init_module); | |
1227 | module_exit(if_sdio_exit_module); | |
1228 | ||
1229 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1230 | MODULE_AUTHOR("Pierre Ossman"); | |
1231 | MODULE_LICENSE("GPL"); |