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 PO |
30 | #include <linux/moduleparam.h> |
31 | #include <linux/firmware.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/mmc/card.h> | |
35 | #include <linux/mmc/sdio_func.h> | |
36 | #include <linux/mmc/sdio_ids.h> | |
8a64c0f6 DM |
37 | #include <linux/mmc/sdio.h> |
38 | #include <linux/mmc/host.h> | |
727c26ed PO |
39 | |
40 | #include "host.h" | |
41 | #include "decl.h" | |
42 | #include "defs.h" | |
43 | #include "dev.h" | |
6bc61f4d | 44 | #include "cmd.h" |
727c26ed PO |
45 | #include "if_sdio.h" |
46 | ||
6bc61f4d BZ |
47 | /* The if_sdio_remove() callback function is called when |
48 | * user removes this module from kernel space or ejects | |
49 | * the card from the slot. The driver handles these 2 cases | |
50 | * differently for SD8688 combo chip. | |
51 | * If the user is removing the module, the FUNC_SHUTDOWN | |
52 | * command for SD8688 is sent to the firmware. | |
53 | * If the card is removed, there is no need to send this command. | |
54 | * | |
55 | * The variable 'user_rmmod' is used to distinguish these two | |
56 | * scenarios. This flag is initialized as FALSE in case the card | |
57 | * is removed, and will be set to TRUE for module removal when | |
58 | * module_exit function is called. | |
59 | */ | |
60 | static u8 user_rmmod; | |
61 | ||
10078321 HS |
62 | static char *lbs_helper_name = NULL; |
63 | module_param_named(helper_name, lbs_helper_name, charp, 0644); | |
727c26ed | 64 | |
10078321 HS |
65 | static char *lbs_fw_name = NULL; |
66 | module_param_named(fw_name, lbs_fw_name, charp, 0644); | |
727c26ed PO |
67 | |
68 | static const struct sdio_device_id if_sdio_ids[] = { | |
e45d8e53 BZ |
69 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, |
70 | SDIO_DEVICE_ID_MARVELL_LIBERTAS) }, | |
71 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, | |
72 | SDIO_DEVICE_ID_MARVELL_8688WLAN) }, | |
73 | { /* end: all zeroes */ }, | |
727c26ed PO |
74 | }; |
75 | ||
76 | MODULE_DEVICE_TABLE(sdio, if_sdio_ids); | |
77 | ||
78 | struct if_sdio_model { | |
79 | int model; | |
80 | const char *helper; | |
81 | const char *firmware; | |
82 | }; | |
83 | ||
84 | static struct if_sdio_model if_sdio_models[] = { | |
85 | { | |
86 | /* 8385 */ | |
e70a5ac5 | 87 | .model = IF_SDIO_MODEL_8385, |
727c26ed PO |
88 | .helper = "sd8385_helper.bin", |
89 | .firmware = "sd8385.bin", | |
90 | }, | |
91 | { | |
92 | /* 8686 */ | |
e70a5ac5 | 93 | .model = IF_SDIO_MODEL_8686, |
727c26ed PO |
94 | .helper = "sd8686_helper.bin", |
95 | .firmware = "sd8686.bin", | |
96 | }, | |
e45d8e53 BZ |
97 | { |
98 | /* 8688 */ | |
e70a5ac5 | 99 | .model = IF_SDIO_MODEL_8688, |
e45d8e53 BZ |
100 | .helper = "sd8688_helper.bin", |
101 | .firmware = "sd8688.bin", | |
102 | }, | |
727c26ed | 103 | }; |
a974a4bb BH |
104 | MODULE_FIRMWARE("sd8385_helper.bin"); |
105 | MODULE_FIRMWARE("sd8385.bin"); | |
106 | MODULE_FIRMWARE("sd8686_helper.bin"); | |
107 | MODULE_FIRMWARE("sd8686.bin"); | |
108 | MODULE_FIRMWARE("sd8688_helper.bin"); | |
109 | MODULE_FIRMWARE("sd8688.bin"); | |
727c26ed PO |
110 | |
111 | struct if_sdio_packet { | |
112 | struct if_sdio_packet *next; | |
113 | u16 nb; | |
114 | u8 buffer[0] __attribute__((aligned(4))); | |
115 | }; | |
116 | ||
117 | struct if_sdio_card { | |
118 | struct sdio_func *func; | |
69f9032d | 119 | struct lbs_private *priv; |
727c26ed PO |
120 | |
121 | int model; | |
122 | unsigned long ioport; | |
2c7e5798 | 123 | unsigned int scratch_reg; |
727c26ed PO |
124 | |
125 | const char *helper; | |
126 | const char *firmware; | |
127 | ||
128 | u8 buffer[65536]; | |
727c26ed PO |
129 | |
130 | spinlock_t lock; | |
131 | struct if_sdio_packet *packets; | |
9b02f419 DW |
132 | |
133 | struct workqueue_struct *workqueue; | |
727c26ed | 134 | struct work_struct packet_worker; |
b136a141 BZ |
135 | |
136 | u8 rx_unit; | |
727c26ed PO |
137 | }; |
138 | ||
139 | /********************************************************************/ | |
140 | /* I/O */ | |
141 | /********************************************************************/ | |
142 | ||
2c7e5798 BZ |
143 | /* |
144 | * For SD8385/SD8686, this function reads firmware status after | |
145 | * the image is downloaded, or reads RX packet length when | |
146 | * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received. | |
147 | * For SD8688, this function reads firmware status only. | |
148 | */ | |
727c26ed PO |
149 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) |
150 | { | |
2c7e5798 | 151 | int ret; |
727c26ed PO |
152 | u16 scratch; |
153 | ||
2c7e5798 | 154 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); |
727c26ed | 155 | if (!ret) |
2c7e5798 BZ |
156 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, |
157 | &ret) << 8; | |
727c26ed PO |
158 | |
159 | if (err) | |
160 | *err = ret; | |
161 | ||
162 | if (ret) | |
163 | return 0xffff; | |
164 | ||
165 | return scratch; | |
166 | } | |
167 | ||
b136a141 BZ |
168 | static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) |
169 | { | |
170 | int ret; | |
171 | u8 rx_unit; | |
172 | ||
173 | rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); | |
174 | ||
175 | if (ret) | |
176 | rx_unit = 0; | |
177 | ||
178 | return rx_unit; | |
179 | } | |
180 | ||
181 | static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) | |
182 | { | |
183 | int ret; | |
184 | u16 rx_len; | |
185 | ||
186 | switch (card->model) { | |
187 | case IF_SDIO_MODEL_8385: | |
188 | case IF_SDIO_MODEL_8686: | |
189 | rx_len = if_sdio_read_scratch(card, &ret); | |
190 | break; | |
191 | case IF_SDIO_MODEL_8688: | |
192 | default: /* for newer chipsets */ | |
193 | rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); | |
194 | if (!ret) | |
195 | rx_len <<= card->rx_unit; | |
196 | else | |
197 | rx_len = 0xffff; /* invalid length */ | |
198 | ||
199 | break; | |
200 | } | |
201 | ||
202 | if (err) | |
203 | *err = ret; | |
204 | ||
205 | return rx_len; | |
206 | } | |
207 | ||
727c26ed PO |
208 | static int if_sdio_handle_cmd(struct if_sdio_card *card, |
209 | u8 *buffer, unsigned size) | |
210 | { | |
7919b89c | 211 | struct lbs_private *priv = card->priv; |
727c26ed PO |
212 | int ret; |
213 | unsigned long flags; | |
7919b89c | 214 | u8 i; |
727c26ed PO |
215 | |
216 | lbs_deb_enter(LBS_DEB_SDIO); | |
217 | ||
ddac4526 | 218 | if (size > LBS_CMD_BUFFER_SIZE) { |
727c26ed PO |
219 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
220 | (int)size); | |
221 | ret = -E2BIG; | |
222 | goto out; | |
223 | } | |
224 | ||
7919b89c | 225 | spin_lock_irqsave(&priv->driver_lock, flags); |
727c26ed | 226 | |
7919b89c HS |
227 | i = (priv->resp_idx == 0) ? 1 : 0; |
228 | BUG_ON(priv->resp_len[i]); | |
229 | priv->resp_len[i] = size; | |
230 | memcpy(priv->resp_buf[i], buffer, size); | |
231 | lbs_notify_command_response(priv, i); | |
727c26ed | 232 | |
7919b89c | 233 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); |
727c26ed PO |
234 | |
235 | ret = 0; | |
236 | ||
237 | out: | |
727c26ed | 238 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
239 | return ret; |
240 | } | |
241 | ||
242 | static int if_sdio_handle_data(struct if_sdio_card *card, | |
243 | u8 *buffer, unsigned size) | |
244 | { | |
245 | int ret; | |
246 | struct sk_buff *skb; | |
247 | char *data; | |
248 | ||
249 | lbs_deb_enter(LBS_DEB_SDIO); | |
250 | ||
251 | if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { | |
252 | lbs_deb_sdio("response packet too large (%d bytes)\n", | |
253 | (int)size); | |
254 | ret = -E2BIG; | |
255 | goto out; | |
256 | } | |
257 | ||
51e6b712 | 258 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); |
727c26ed PO |
259 | if (!skb) { |
260 | ret = -ENOMEM; | |
261 | goto out; | |
262 | } | |
263 | ||
51e6b712 PO |
264 | skb_reserve(skb, NET_IP_ALIGN); |
265 | ||
727c26ed PO |
266 | data = skb_put(skb, size); |
267 | ||
268 | memcpy(data, buffer, size); | |
269 | ||
10078321 | 270 | lbs_process_rxed_packet(card->priv, skb); |
727c26ed PO |
271 | |
272 | ret = 0; | |
273 | ||
274 | out: | |
275 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
280 | static int if_sdio_handle_event(struct if_sdio_card *card, | |
281 | u8 *buffer, unsigned size) | |
282 | { | |
283 | int ret; | |
727c26ed PO |
284 | u32 event; |
285 | ||
286 | lbs_deb_enter(LBS_DEB_SDIO); | |
287 | ||
e70a5ac5 | 288 | if (card->model == IF_SDIO_MODEL_8385) { |
727c26ed PO |
289 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); |
290 | if (ret) | |
291 | goto out; | |
f5ac2b9e BZ |
292 | |
293 | /* right shift 3 bits to get the event id */ | |
294 | event >>= 3; | |
727c26ed PO |
295 | } else { |
296 | if (size < 4) { | |
297 | lbs_deb_sdio("event packet too small (%d bytes)\n", | |
298 | (int)size); | |
299 | ret = -EINVAL; | |
300 | goto out; | |
301 | } | |
302 | event = buffer[3] << 24; | |
303 | event |= buffer[2] << 16; | |
304 | event |= buffer[1] << 8; | |
305 | event |= buffer[0] << 0; | |
727c26ed PO |
306 | } |
307 | ||
7919b89c | 308 | lbs_queue_event(card->priv, event & 0xFF); |
727c26ed PO |
309 | ret = 0; |
310 | ||
311 | out: | |
312 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
313 | ||
314 | return ret; | |
315 | } | |
316 | ||
317 | static int if_sdio_card_to_host(struct if_sdio_card *card) | |
318 | { | |
319 | int ret; | |
320 | u8 status; | |
321 | u16 size, type, chunk; | |
322 | unsigned long timeout; | |
323 | ||
324 | lbs_deb_enter(LBS_DEB_SDIO); | |
325 | ||
b136a141 | 326 | size = if_sdio_read_rx_len(card, &ret); |
727c26ed PO |
327 | if (ret) |
328 | goto out; | |
329 | ||
330 | if (size < 4) { | |
331 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", | |
332 | (int)size); | |
333 | ret = -EINVAL; | |
334 | goto out; | |
335 | } | |
336 | ||
337 | timeout = jiffies + HZ; | |
338 | while (1) { | |
339 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
340 | if (ret) | |
341 | goto out; | |
342 | if (status & IF_SDIO_IO_RDY) | |
343 | break; | |
344 | if (time_after(jiffies, timeout)) { | |
345 | ret = -ETIMEDOUT; | |
346 | goto out; | |
347 | } | |
348 | mdelay(1); | |
349 | } | |
350 | ||
351 | /* | |
352 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
353 | * goes suicidal. There's no way to guarantee that for all |
354 | * controllers, but we can at least try. | |
727c26ed | 355 | */ |
ad3868b2 | 356 | chunk = sdio_align_size(card->func, size); |
727c26ed PO |
357 | |
358 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); | |
359 | if (ret) | |
360 | goto out; | |
361 | ||
362 | chunk = card->buffer[0] | (card->buffer[1] << 8); | |
363 | type = card->buffer[2] | (card->buffer[3] << 8); | |
364 | ||
365 | lbs_deb_sdio("packet of type %d and size %d bytes\n", | |
366 | (int)type, (int)chunk); | |
367 | ||
368 | if (chunk > size) { | |
369 | lbs_deb_sdio("packet fragment (%d > %d)\n", | |
370 | (int)chunk, (int)size); | |
371 | ret = -EINVAL; | |
372 | goto out; | |
373 | } | |
374 | ||
375 | if (chunk < size) { | |
376 | lbs_deb_sdio("packet fragment (%d < %d)\n", | |
377 | (int)chunk, (int)size); | |
378 | } | |
379 | ||
380 | switch (type) { | |
381 | case MVMS_CMD: | |
382 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); | |
383 | if (ret) | |
384 | goto out; | |
385 | break; | |
386 | case MVMS_DAT: | |
387 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); | |
388 | if (ret) | |
389 | goto out; | |
390 | break; | |
391 | case MVMS_EVENT: | |
392 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); | |
393 | if (ret) | |
394 | goto out; | |
395 | break; | |
396 | default: | |
397 | lbs_deb_sdio("invalid type (%d) from firmware\n", | |
398 | (int)type); | |
399 | ret = -EINVAL; | |
400 | goto out; | |
401 | } | |
402 | ||
403 | out: | |
404 | if (ret) | |
405 | lbs_pr_err("problem fetching packet from firmware\n"); | |
406 | ||
407 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
412 | static void if_sdio_host_to_card_worker(struct work_struct *work) | |
413 | { | |
414 | struct if_sdio_card *card; | |
415 | struct if_sdio_packet *packet; | |
416 | unsigned long timeout; | |
417 | u8 status; | |
418 | int ret; | |
419 | unsigned long flags; | |
420 | ||
421 | lbs_deb_enter(LBS_DEB_SDIO); | |
422 | ||
423 | card = container_of(work, struct if_sdio_card, packet_worker); | |
424 | ||
425 | while (1) { | |
426 | spin_lock_irqsave(&card->lock, flags); | |
427 | packet = card->packets; | |
428 | if (packet) | |
429 | card->packets = packet->next; | |
430 | spin_unlock_irqrestore(&card->lock, flags); | |
431 | ||
432 | if (!packet) | |
433 | break; | |
434 | ||
435 | sdio_claim_host(card->func); | |
436 | ||
437 | timeout = jiffies + HZ; | |
438 | while (1) { | |
439 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
440 | if (ret) | |
441 | goto release; | |
442 | if (status & IF_SDIO_IO_RDY) | |
443 | break; | |
444 | if (time_after(jiffies, timeout)) { | |
445 | ret = -ETIMEDOUT; | |
446 | goto release; | |
447 | } | |
448 | mdelay(1); | |
449 | } | |
450 | ||
451 | ret = sdio_writesb(card->func, card->ioport, | |
452 | packet->buffer, packet->nb); | |
453 | if (ret) | |
454 | goto release; | |
455 | release: | |
456 | sdio_release_host(card->func); | |
457 | ||
458 | kfree(packet); | |
459 | } | |
460 | ||
461 | lbs_deb_leave(LBS_DEB_SDIO); | |
462 | } | |
463 | ||
464 | /********************************************************************/ | |
465 | /* Firmware */ | |
466 | /********************************************************************/ | |
467 | ||
468 | static int if_sdio_prog_helper(struct if_sdio_card *card) | |
469 | { | |
470 | int ret; | |
471 | u8 status; | |
472 | const struct firmware *fw; | |
473 | unsigned long timeout; | |
474 | u8 *chunk_buffer; | |
475 | u32 chunk_size; | |
6dfff895 | 476 | const u8 *firmware; |
727c26ed PO |
477 | size_t size; |
478 | ||
479 | lbs_deb_enter(LBS_DEB_SDIO); | |
480 | ||
481 | ret = request_firmware(&fw, card->helper, &card->func->dev); | |
482 | if (ret) { | |
483 | lbs_pr_err("can't load helper firmware\n"); | |
484 | goto out; | |
485 | } | |
486 | ||
487 | chunk_buffer = kzalloc(64, GFP_KERNEL); | |
488 | if (!chunk_buffer) { | |
489 | ret = -ENOMEM; | |
490 | goto release_fw; | |
491 | } | |
492 | ||
493 | sdio_claim_host(card->func); | |
494 | ||
495 | ret = sdio_set_block_size(card->func, 32); | |
496 | if (ret) | |
497 | goto release; | |
498 | ||
499 | firmware = fw->data; | |
500 | size = fw->size; | |
501 | ||
502 | while (size) { | |
503 | timeout = jiffies + HZ; | |
504 | while (1) { | |
505 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
506 | if (ret) | |
507 | goto release; | |
508 | if ((status & IF_SDIO_IO_RDY) && | |
509 | (status & IF_SDIO_DL_RDY)) | |
510 | break; | |
511 | if (time_after(jiffies, timeout)) { | |
512 | ret = -ETIMEDOUT; | |
513 | goto release; | |
514 | } | |
515 | mdelay(1); | |
516 | } | |
517 | ||
518 | chunk_size = min(size, (size_t)60); | |
519 | ||
c2df2efe | 520 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); |
727c26ed PO |
521 | memcpy(chunk_buffer + 4, firmware, chunk_size); |
522 | /* | |
523 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); | |
524 | */ | |
525 | ret = sdio_writesb(card->func, card->ioport, | |
526 | chunk_buffer, 64); | |
527 | if (ret) | |
528 | goto release; | |
529 | ||
530 | firmware += chunk_size; | |
531 | size -= chunk_size; | |
532 | } | |
533 | ||
534 | /* an empty block marks the end of the transfer */ | |
535 | memset(chunk_buffer, 0, 4); | |
536 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); | |
537 | if (ret) | |
538 | goto release; | |
539 | ||
540 | lbs_deb_sdio("waiting for helper to boot...\n"); | |
541 | ||
542 | /* wait for the helper to boot by looking at the size register */ | |
543 | timeout = jiffies + HZ; | |
544 | while (1) { | |
545 | u16 req_size; | |
546 | ||
547 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
548 | if (ret) | |
549 | goto release; | |
550 | ||
551 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
552 | if (ret) | |
553 | goto release; | |
554 | ||
555 | if (req_size != 0) | |
556 | break; | |
557 | ||
558 | if (time_after(jiffies, timeout)) { | |
559 | ret = -ETIMEDOUT; | |
560 | goto release; | |
561 | } | |
562 | ||
563 | msleep(10); | |
564 | } | |
565 | ||
566 | ret = 0; | |
567 | ||
568 | release: | |
727c26ed PO |
569 | sdio_release_host(card->func); |
570 | kfree(chunk_buffer); | |
571 | release_fw: | |
572 | release_firmware(fw); | |
573 | ||
574 | out: | |
575 | if (ret) | |
576 | lbs_pr_err("failed to load helper firmware\n"); | |
577 | ||
578 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | static int if_sdio_prog_real(struct if_sdio_card *card) | |
584 | { | |
585 | int ret; | |
586 | u8 status; | |
587 | const struct firmware *fw; | |
588 | unsigned long timeout; | |
589 | u8 *chunk_buffer; | |
590 | u32 chunk_size; | |
6dfff895 | 591 | const u8 *firmware; |
727c26ed PO |
592 | size_t size, req_size; |
593 | ||
594 | lbs_deb_enter(LBS_DEB_SDIO); | |
595 | ||
596 | ret = request_firmware(&fw, card->firmware, &card->func->dev); | |
597 | if (ret) { | |
598 | lbs_pr_err("can't load firmware\n"); | |
599 | goto out; | |
600 | } | |
601 | ||
602 | chunk_buffer = kzalloc(512, GFP_KERNEL); | |
603 | if (!chunk_buffer) { | |
604 | ret = -ENOMEM; | |
605 | goto release_fw; | |
606 | } | |
607 | ||
608 | sdio_claim_host(card->func); | |
609 | ||
610 | ret = sdio_set_block_size(card->func, 32); | |
611 | if (ret) | |
612 | goto release; | |
613 | ||
614 | firmware = fw->data; | |
615 | size = fw->size; | |
616 | ||
617 | while (size) { | |
618 | timeout = jiffies + HZ; | |
619 | while (1) { | |
620 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
621 | if (ret) | |
622 | goto release; | |
623 | if ((status & IF_SDIO_IO_RDY) && | |
624 | (status & IF_SDIO_DL_RDY)) | |
625 | break; | |
626 | if (time_after(jiffies, timeout)) { | |
627 | ret = -ETIMEDOUT; | |
628 | goto release; | |
629 | } | |
630 | mdelay(1); | |
631 | } | |
632 | ||
633 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
634 | if (ret) | |
635 | goto release; | |
636 | ||
637 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
638 | if (ret) | |
639 | goto release; | |
640 | /* | |
641 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
642 | */ | |
643 | if (req_size == 0) { | |
644 | lbs_deb_sdio("firmware helper gave up early\n"); | |
645 | ret = -EIO; | |
646 | goto release; | |
647 | } | |
648 | ||
649 | if (req_size & 0x01) { | |
650 | lbs_deb_sdio("firmware helper signalled error\n"); | |
651 | ret = -EIO; | |
652 | goto release; | |
653 | } | |
654 | ||
655 | if (req_size > size) | |
656 | req_size = size; | |
657 | ||
658 | while (req_size) { | |
659 | chunk_size = min(req_size, (size_t)512); | |
660 | ||
661 | memcpy(chunk_buffer, firmware, chunk_size); | |
662 | /* | |
663 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
664 | chunk_size, (chunk_size + 31) / 32 * 32); | |
665 | */ | |
666 | ret = sdio_writesb(card->func, card->ioport, | |
23827926 | 667 | chunk_buffer, roundup(chunk_size, 32)); |
727c26ed PO |
668 | if (ret) |
669 | goto release; | |
670 | ||
671 | firmware += chunk_size; | |
672 | size -= chunk_size; | |
673 | req_size -= chunk_size; | |
674 | } | |
675 | } | |
676 | ||
677 | ret = 0; | |
678 | ||
679 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
680 | ||
681 | /* wait for the firmware to boot */ | |
682 | timeout = jiffies + HZ; | |
683 | while (1) { | |
684 | u16 scratch; | |
685 | ||
686 | scratch = if_sdio_read_scratch(card, &ret); | |
687 | if (ret) | |
688 | goto release; | |
689 | ||
690 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
691 | break; | |
692 | ||
693 | if (time_after(jiffies, timeout)) { | |
694 | ret = -ETIMEDOUT; | |
695 | goto release; | |
696 | } | |
697 | ||
698 | msleep(10); | |
699 | } | |
700 | ||
701 | ret = 0; | |
702 | ||
703 | release: | |
727c26ed PO |
704 | sdio_release_host(card->func); |
705 | kfree(chunk_buffer); | |
706 | release_fw: | |
707 | release_firmware(fw); | |
708 | ||
709 | out: | |
710 | if (ret) | |
711 | lbs_pr_err("failed to load firmware\n"); | |
712 | ||
713 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
714 | ||
715 | return ret; | |
716 | } | |
717 | ||
718 | static int if_sdio_prog_firmware(struct if_sdio_card *card) | |
719 | { | |
720 | int ret; | |
721 | u16 scratch; | |
722 | ||
723 | lbs_deb_enter(LBS_DEB_SDIO); | |
724 | ||
725 | sdio_claim_host(card->func); | |
726 | scratch = if_sdio_read_scratch(card, &ret); | |
727 | sdio_release_host(card->func); | |
728 | ||
729 | if (ret) | |
730 | goto out; | |
731 | ||
2c7e5798 BZ |
732 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
733 | ||
727c26ed PO |
734 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
735 | lbs_deb_sdio("firmware already loaded\n"); | |
736 | goto success; | |
737 | } | |
738 | ||
739 | ret = if_sdio_prog_helper(card); | |
740 | if (ret) | |
741 | goto out; | |
742 | ||
743 | ret = if_sdio_prog_real(card); | |
744 | if (ret) | |
745 | goto out; | |
746 | ||
747 | success: | |
d26285f8 BZ |
748 | sdio_claim_host(card->func); |
749 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); | |
750 | sdio_release_host(card->func); | |
727c26ed PO |
751 | ret = 0; |
752 | ||
753 | out: | |
754 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
755 | ||
756 | return ret; | |
757 | } | |
758 | ||
759 | /*******************************************************************/ | |
760 | /* Libertas callbacks */ | |
761 | /*******************************************************************/ | |
762 | ||
69f9032d HS |
763 | static int if_sdio_host_to_card(struct lbs_private *priv, |
764 | u8 type, u8 *buf, u16 nb) | |
727c26ed PO |
765 | { |
766 | int ret; | |
767 | struct if_sdio_card *card; | |
768 | struct if_sdio_packet *packet, *cur; | |
769 | u16 size; | |
770 | unsigned long flags; | |
771 | ||
772 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); | |
773 | ||
774 | card = priv->card; | |
775 | ||
776 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { | |
777 | ret = -EINVAL; | |
778 | goto out; | |
779 | } | |
780 | ||
781 | /* | |
782 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
783 | * goes suicidal. There's no way to guarantee that for all |
784 | * controllers, but we can at least try. | |
727c26ed | 785 | */ |
ad3868b2 | 786 | size = sdio_align_size(card->func, nb + 4); |
727c26ed PO |
787 | |
788 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, | |
789 | GFP_ATOMIC); | |
790 | if (!packet) { | |
791 | ret = -ENOMEM; | |
792 | goto out; | |
793 | } | |
794 | ||
795 | packet->next = NULL; | |
796 | packet->nb = size; | |
797 | ||
798 | /* | |
799 | * SDIO specific header. | |
800 | */ | |
801 | packet->buffer[0] = (nb + 4) & 0xff; | |
802 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; | |
803 | packet->buffer[2] = type; | |
804 | packet->buffer[3] = 0; | |
805 | ||
806 | memcpy(packet->buffer + 4, buf, nb); | |
807 | ||
808 | spin_lock_irqsave(&card->lock, flags); | |
809 | ||
810 | if (!card->packets) | |
811 | card->packets = packet; | |
812 | else { | |
813 | cur = card->packets; | |
814 | while (cur->next) | |
815 | cur = cur->next; | |
816 | cur->next = packet; | |
817 | } | |
818 | ||
819 | switch (type) { | |
820 | case MVMS_CMD: | |
821 | priv->dnld_sent = DNLD_CMD_SENT; | |
822 | break; | |
823 | case MVMS_DAT: | |
824 | priv->dnld_sent = DNLD_DATA_SENT; | |
825 | break; | |
826 | default: | |
827 | lbs_deb_sdio("unknown packet type %d\n", (int)type); | |
828 | } | |
829 | ||
830 | spin_unlock_irqrestore(&card->lock, flags); | |
831 | ||
9b02f419 | 832 | queue_work(card->workqueue, &card->packet_worker); |
727c26ed PO |
833 | |
834 | ret = 0; | |
835 | ||
836 | out: | |
837 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
838 | ||
839 | return ret; | |
840 | } | |
841 | ||
49125454 AK |
842 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
843 | { | |
844 | int ret = -1; | |
845 | struct cmd_header cmd; | |
846 | ||
847 | memset(&cmd, 0, sizeof(cmd)); | |
848 | ||
849 | lbs_deb_sdio("send DEEP_SLEEP command\n"); | |
850 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), | |
851 | lbs_cmd_copyback, (unsigned long) &cmd); | |
852 | if (ret) | |
853 | lbs_pr_err("DEEP_SLEEP cmd failed\n"); | |
854 | ||
855 | mdelay(200); | |
856 | return ret; | |
857 | } | |
858 | ||
859 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) | |
860 | { | |
861 | struct if_sdio_card *card = priv->card; | |
862 | int ret = -1; | |
863 | ||
864 | lbs_deb_enter(LBS_DEB_SDIO); | |
865 | sdio_claim_host(card->func); | |
866 | ||
867 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); | |
868 | if (ret) | |
869 | lbs_pr_err("sdio_writeb failed!\n"); | |
870 | ||
871 | sdio_release_host(card->func); | |
872 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
873 | return ret; | |
874 | } | |
875 | ||
876 | static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv) | |
877 | { | |
878 | struct if_sdio_card *card = priv->card; | |
879 | int ret = -1; | |
880 | ||
881 | lbs_deb_enter(LBS_DEB_SDIO); | |
882 | sdio_claim_host(card->func); | |
883 | ||
884 | sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret); | |
885 | if (ret) | |
886 | lbs_pr_err("sdio_writeb failed!\n"); | |
887 | ||
888 | sdio_release_host(card->func); | |
889 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
890 | return ret; | |
891 | ||
892 | } | |
893 | ||
727c26ed PO |
894 | /*******************************************************************/ |
895 | /* SDIO callbacks */ | |
896 | /*******************************************************************/ | |
897 | ||
898 | static void if_sdio_interrupt(struct sdio_func *func) | |
899 | { | |
900 | int ret; | |
901 | struct if_sdio_card *card; | |
902 | u8 cause; | |
903 | ||
904 | lbs_deb_enter(LBS_DEB_SDIO); | |
905 | ||
906 | card = sdio_get_drvdata(func); | |
907 | ||
908 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); | |
909 | if (ret) | |
910 | goto out; | |
911 | ||
912 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); | |
913 | ||
914 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); | |
915 | if (ret) | |
916 | goto out; | |
917 | ||
918 | /* | |
919 | * Ignore the define name, this really means the card has | |
920 | * successfully received the command. | |
921 | */ | |
49125454 | 922 | card->priv->is_activity_detected = 1; |
e775ed7c DW |
923 | if (cause & IF_SDIO_H_INT_DNLD) |
924 | lbs_host_to_card_done(card->priv); | |
925 | ||
727c26ed PO |
926 | |
927 | if (cause & IF_SDIO_H_INT_UPLD) { | |
928 | ret = if_sdio_card_to_host(card); | |
929 | if (ret) | |
930 | goto out; | |
931 | } | |
932 | ||
933 | ret = 0; | |
934 | ||
935 | out: | |
936 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
937 | } | |
938 | ||
939 | static int if_sdio_probe(struct sdio_func *func, | |
940 | const struct sdio_device_id *id) | |
941 | { | |
942 | struct if_sdio_card *card; | |
69f9032d | 943 | struct lbs_private *priv; |
727c26ed PO |
944 | int ret, i; |
945 | unsigned int model; | |
946 | struct if_sdio_packet *packet; | |
8a64c0f6 | 947 | struct mmc_host *host = func->card->host; |
727c26ed PO |
948 | |
949 | lbs_deb_enter(LBS_DEB_SDIO); | |
950 | ||
951 | for (i = 0;i < func->card->num_info;i++) { | |
952 | if (sscanf(func->card->info[i], | |
953 | "802.11 SDIO ID: %x", &model) == 1) | |
954 | break; | |
955 | if (sscanf(func->card->info[i], | |
956 | "ID: %x", &model) == 1) | |
957 | break; | |
e70a5ac5 BZ |
958 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
959 | model = IF_SDIO_MODEL_8385; | |
960 | break; | |
961 | } | |
727c26ed PO |
962 | } |
963 | ||
964 | if (i == func->card->num_info) { | |
965 | lbs_pr_err("unable to identify card model\n"); | |
966 | return -ENODEV; | |
967 | } | |
968 | ||
969 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
970 | if (!card) | |
971 | return -ENOMEM; | |
972 | ||
973 | card->func = func; | |
974 | card->model = model; | |
2c7e5798 BZ |
975 | |
976 | switch (card->model) { | |
977 | case IF_SDIO_MODEL_8385: | |
978 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; | |
979 | break; | |
980 | case IF_SDIO_MODEL_8686: | |
981 | card->scratch_reg = IF_SDIO_SCRATCH; | |
982 | break; | |
983 | case IF_SDIO_MODEL_8688: | |
984 | default: /* for newer chipsets */ | |
985 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
986 | break; | |
987 | } | |
988 | ||
727c26ed | 989 | spin_lock_init(&card->lock); |
9b02f419 | 990 | card->workqueue = create_workqueue("libertas_sdio"); |
727c26ed PO |
991 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
992 | ||
993 | for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) { | |
994 | if (card->model == if_sdio_models[i].model) | |
995 | break; | |
996 | } | |
997 | ||
998 | if (i == ARRAY_SIZE(if_sdio_models)) { | |
af901ca1 | 999 | lbs_pr_err("unknown card model 0x%x\n", card->model); |
727c26ed PO |
1000 | ret = -ENODEV; |
1001 | goto free; | |
1002 | } | |
1003 | ||
1004 | card->helper = if_sdio_models[i].helper; | |
1005 | card->firmware = if_sdio_models[i].firmware; | |
1006 | ||
10078321 | 1007 | if (lbs_helper_name) { |
727c26ed | 1008 | lbs_deb_sdio("overriding helper firmware: %s\n", |
10078321 HS |
1009 | lbs_helper_name); |
1010 | card->helper = lbs_helper_name; | |
727c26ed PO |
1011 | } |
1012 | ||
10078321 HS |
1013 | if (lbs_fw_name) { |
1014 | lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name); | |
1015 | card->firmware = lbs_fw_name; | |
727c26ed PO |
1016 | } |
1017 | ||
1018 | sdio_claim_host(func); | |
1019 | ||
1020 | ret = sdio_enable_func(func); | |
1021 | if (ret) | |
1022 | goto release; | |
1023 | ||
1024 | ret = sdio_claim_irq(func, if_sdio_interrupt); | |
1025 | if (ret) | |
1026 | goto disable; | |
1027 | ||
8a64c0f6 DM |
1028 | /* For 1-bit transfers to the 8686 model, we need to enable the |
1029 | * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0 | |
1030 | * bit to allow access to non-vendor registers. */ | |
1031 | if ((card->model == IF_SDIO_MODEL_8686) && | |
1032 | (host->caps & MMC_CAP_SDIO_IRQ) && | |
1033 | (host->ios.bus_width == MMC_BUS_WIDTH_1)) { | |
1034 | u8 reg; | |
1035 | ||
1036 | func->card->quirks |= MMC_QUIRK_LENIENT_FN0; | |
1037 | reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret); | |
1038 | if (ret) | |
1039 | goto release_int; | |
1040 | ||
1041 | reg |= SDIO_BUS_ECSI; | |
1042 | sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret); | |
1043 | if (ret) | |
1044 | goto release_int; | |
1045 | } | |
1046 | ||
727c26ed PO |
1047 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); |
1048 | if (ret) | |
1049 | goto release_int; | |
1050 | ||
1051 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; | |
1052 | if (ret) | |
1053 | goto release_int; | |
1054 | ||
1055 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; | |
1056 | if (ret) | |
1057 | goto release_int; | |
1058 | ||
1059 | sdio_release_host(func); | |
1060 | ||
1061 | sdio_set_drvdata(func, card); | |
1062 | ||
1063 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " | |
1064 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", | |
1065 | func->class, func->vendor, func->device, | |
1066 | model, (unsigned)card->ioport); | |
1067 | ||
1068 | ret = if_sdio_prog_firmware(card); | |
1069 | if (ret) | |
1070 | goto reclaim; | |
1071 | ||
10078321 | 1072 | priv = lbs_add_card(card, &func->dev); |
727c26ed PO |
1073 | if (!priv) { |
1074 | ret = -ENOMEM; | |
1075 | goto reclaim; | |
1076 | } | |
1077 | ||
1078 | card->priv = priv; | |
1079 | ||
1080 | priv->card = card; | |
1081 | priv->hw_host_to_card = if_sdio_host_to_card; | |
49125454 AK |
1082 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; |
1083 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; | |
1084 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; | |
727c26ed | 1085 | |
aa21c004 | 1086 | priv->fw_ready = 1; |
727c26ed | 1087 | |
b136a141 BZ |
1088 | sdio_claim_host(func); |
1089 | ||
1090 | /* | |
1091 | * Get rx_unit if the chip is SD8688 or newer. | |
1092 | * SD8385 & SD8686 do not have rx_unit. | |
1093 | */ | |
1094 | if ((card->model != IF_SDIO_MODEL_8385) | |
1095 | && (card->model != IF_SDIO_MODEL_8686)) | |
1096 | card->rx_unit = if_sdio_read_rx_unit(card); | |
1097 | else | |
1098 | card->rx_unit = 0; | |
1099 | ||
727c26ed PO |
1100 | /* |
1101 | * Enable interrupts now that everything is set up | |
1102 | */ | |
727c26ed PO |
1103 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); |
1104 | sdio_release_host(func); | |
1105 | if (ret) | |
1106 | goto reclaim; | |
1107 | ||
d26285f8 BZ |
1108 | /* |
1109 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions | |
1110 | */ | |
6bc61f4d BZ |
1111 | if (card->model == IF_SDIO_MODEL_8688) { |
1112 | struct cmd_header cmd; | |
1113 | ||
1114 | memset(&cmd, 0, sizeof(cmd)); | |
1115 | ||
1116 | lbs_deb_sdio("send function INIT command\n"); | |
1117 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), | |
1118 | lbs_cmd_copyback, (unsigned long) &cmd)) | |
1119 | lbs_pr_alert("CMD_FUNC_INIT cmd failed\n"); | |
1120 | } | |
d26285f8 | 1121 | |
10078321 | 1122 | ret = lbs_start_card(priv); |
727c26ed PO |
1123 | if (ret) |
1124 | goto err_activate_card; | |
1125 | ||
1126 | out: | |
1127 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1128 | ||
1129 | return ret; | |
1130 | ||
1131 | err_activate_card: | |
9b02f419 DW |
1132 | flush_workqueue(card->workqueue); |
1133 | lbs_remove_card(priv); | |
727c26ed PO |
1134 | reclaim: |
1135 | sdio_claim_host(func); | |
1136 | release_int: | |
1137 | sdio_release_irq(func); | |
1138 | disable: | |
1139 | sdio_disable_func(func); | |
1140 | release: | |
1141 | sdio_release_host(func); | |
1142 | free: | |
9b02f419 | 1143 | destroy_workqueue(card->workqueue); |
727c26ed PO |
1144 | while (card->packets) { |
1145 | packet = card->packets; | |
1146 | card->packets = card->packets->next; | |
1147 | kfree(packet); | |
1148 | } | |
1149 | ||
1150 | kfree(card); | |
1151 | ||
1152 | goto out; | |
1153 | } | |
1154 | ||
1155 | static void if_sdio_remove(struct sdio_func *func) | |
1156 | { | |
1157 | struct if_sdio_card *card; | |
1158 | struct if_sdio_packet *packet; | |
1159 | ||
1160 | lbs_deb_enter(LBS_DEB_SDIO); | |
1161 | ||
1162 | card = sdio_get_drvdata(func); | |
1163 | ||
6bc61f4d BZ |
1164 | if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) { |
1165 | /* | |
1166 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1167 | * multiple functions | |
1168 | */ | |
1169 | struct cmd_header cmd; | |
1170 | ||
1171 | memset(&cmd, 0, sizeof(cmd)); | |
1172 | ||
1173 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1174 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1175 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1176 | (unsigned long) &cmd)) | |
1177 | lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); | |
1178 | } | |
d26285f8 | 1179 | |
727c26ed PO |
1180 | |
1181 | lbs_deb_sdio("call remove card\n"); | |
6bc61f4d | 1182 | lbs_stop_card(card->priv); |
10078321 | 1183 | lbs_remove_card(card->priv); |
23b149c1 | 1184 | card->priv->surpriseremoved = 1; |
727c26ed | 1185 | |
9b02f419 DW |
1186 | flush_workqueue(card->workqueue); |
1187 | destroy_workqueue(card->workqueue); | |
727c26ed PO |
1188 | |
1189 | sdio_claim_host(func); | |
1190 | sdio_release_irq(func); | |
1191 | sdio_disable_func(func); | |
1192 | sdio_release_host(func); | |
1193 | ||
1194 | while (card->packets) { | |
1195 | packet = card->packets; | |
1196 | card->packets = card->packets->next; | |
1197 | kfree(packet); | |
1198 | } | |
1199 | ||
1200 | kfree(card); | |
1201 | ||
1202 | lbs_deb_leave(LBS_DEB_SDIO); | |
1203 | } | |
1204 | ||
1205 | static struct sdio_driver if_sdio_driver = { | |
1206 | .name = "libertas_sdio", | |
1207 | .id_table = if_sdio_ids, | |
1208 | .probe = if_sdio_probe, | |
1209 | .remove = if_sdio_remove, | |
1210 | }; | |
1211 | ||
1212 | /*******************************************************************/ | |
1213 | /* Module functions */ | |
1214 | /*******************************************************************/ | |
1215 | ||
4fb910fd | 1216 | static int __init if_sdio_init_module(void) |
727c26ed PO |
1217 | { |
1218 | int ret = 0; | |
1219 | ||
1220 | lbs_deb_enter(LBS_DEB_SDIO); | |
1221 | ||
1222 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1223 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1224 | ||
1225 | ret = sdio_register_driver(&if_sdio_driver); | |
1226 | ||
6bc61f4d BZ |
1227 | /* Clear the flag in case user removes the card. */ |
1228 | user_rmmod = 0; | |
1229 | ||
727c26ed PO |
1230 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
1231 | ||
1232 | return ret; | |
1233 | } | |
1234 | ||
4fb910fd | 1235 | static void __exit if_sdio_exit_module(void) |
727c26ed PO |
1236 | { |
1237 | lbs_deb_enter(LBS_DEB_SDIO); | |
1238 | ||
6bc61f4d BZ |
1239 | /* Set the flag as user is removing this module. */ |
1240 | user_rmmod = 1; | |
d26285f8 | 1241 | |
727c26ed PO |
1242 | sdio_unregister_driver(&if_sdio_driver); |
1243 | ||
1244 | lbs_deb_leave(LBS_DEB_SDIO); | |
1245 | } | |
1246 | ||
1247 | module_init(if_sdio_init_module); | |
1248 | module_exit(if_sdio_exit_module); | |
1249 | ||
1250 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1251 | MODULE_AUTHOR("Pierre Ossman"); | |
1252 | MODULE_LICENSE("GPL"); |