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1 | /* | |
2 | * linux/drivers/net/wireless/libertas/if_sdio.c | |
3 | * | |
4 | * Copyright 2007-2008 Pierre Ossman | |
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 | |
22 | * bugs in the host controllers related to that. One such bug is that | |
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 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/moduleparam.h> | |
31 | #include <linux/slab.h> | |
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 | #include <linux/mmc/sdio.h> | |
39 | #include <linux/mmc/host.h> | |
40 | ||
41 | #include "host.h" | |
42 | #include "decl.h" | |
43 | #include "defs.h" | |
44 | #include "dev.h" | |
45 | #include "cmd.h" | |
46 | #include "if_sdio.h" | |
47 | ||
48 | /* The if_sdio_remove() callback function is called when | |
49 | * user removes this module from kernel space or ejects | |
50 | * the card from the slot. The driver handles these 2 cases | |
51 | * differently for SD8688 combo chip. | |
52 | * If the user is removing the module, the FUNC_SHUTDOWN | |
53 | * command for SD8688 is sent to the firmware. | |
54 | * If the card is removed, there is no need to send this command. | |
55 | * | |
56 | * The variable 'user_rmmod' is used to distinguish these two | |
57 | * scenarios. This flag is initialized as FALSE in case the card | |
58 | * is removed, and will be set to TRUE for module removal when | |
59 | * module_exit function is called. | |
60 | */ | |
61 | static u8 user_rmmod; | |
62 | ||
63 | static char *lbs_helper_name = NULL; | |
64 | module_param_named(helper_name, lbs_helper_name, charp, 0644); | |
65 | ||
66 | static char *lbs_fw_name = NULL; | |
67 | module_param_named(fw_name, lbs_fw_name, charp, 0644); | |
68 | ||
69 | static const struct sdio_device_id if_sdio_ids[] = { | |
70 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, | |
71 | SDIO_DEVICE_ID_MARVELL_LIBERTAS) }, | |
72 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, | |
73 | SDIO_DEVICE_ID_MARVELL_8688WLAN) }, | |
74 | { /* end: all zeroes */ }, | |
75 | }; | |
76 | ||
77 | MODULE_DEVICE_TABLE(sdio, if_sdio_ids); | |
78 | ||
79 | #define MODEL_8385 0x04 | |
80 | #define MODEL_8686 0x0b | |
81 | #define MODEL_8688 0x10 | |
82 | ||
83 | static const struct lbs_fw_table fw_table[] = { | |
84 | { MODEL_8385, "libertas/sd8385_helper.bin", "libertas/sd8385.bin" }, | |
85 | { MODEL_8385, "sd8385_helper.bin", "sd8385.bin" }, | |
86 | { MODEL_8686, "libertas/sd8686_v9_helper.bin", "libertas/sd8686_v9.bin" }, | |
87 | { MODEL_8686, "libertas/sd8686_v8_helper.bin", "libertas/sd8686_v8.bin" }, | |
88 | { MODEL_8686, "sd8686_helper.bin", "sd8686.bin" }, | |
89 | { MODEL_8688, "libertas/sd8688_helper.bin", "libertas/sd8688.bin" }, | |
90 | { MODEL_8688, "sd8688_helper.bin", "sd8688.bin" }, | |
91 | { 0, NULL, NULL } | |
92 | }; | |
93 | MODULE_FIRMWARE("libertas/sd8385_helper.bin"); | |
94 | MODULE_FIRMWARE("libertas/sd8385.bin"); | |
95 | MODULE_FIRMWARE("sd8385_helper.bin"); | |
96 | MODULE_FIRMWARE("sd8385.bin"); | |
97 | MODULE_FIRMWARE("libertas/sd8686_v9_helper.bin"); | |
98 | MODULE_FIRMWARE("libertas/sd8686_v9.bin"); | |
99 | MODULE_FIRMWARE("libertas/sd8686_v8_helper.bin"); | |
100 | MODULE_FIRMWARE("libertas/sd8686_v8.bin"); | |
101 | MODULE_FIRMWARE("sd8686_helper.bin"); | |
102 | MODULE_FIRMWARE("sd8686.bin"); | |
103 | MODULE_FIRMWARE("libertas/sd8688_helper.bin"); | |
104 | MODULE_FIRMWARE("libertas/sd8688.bin"); | |
105 | MODULE_FIRMWARE("sd8688_helper.bin"); | |
106 | MODULE_FIRMWARE("sd8688.bin"); | |
107 | ||
108 | struct if_sdio_packet { | |
109 | struct if_sdio_packet *next; | |
110 | u16 nb; | |
111 | u8 buffer[0] __attribute__((aligned(4))); | |
112 | }; | |
113 | ||
114 | struct if_sdio_card { | |
115 | struct sdio_func *func; | |
116 | struct lbs_private *priv; | |
117 | ||
118 | int model; | |
119 | unsigned long ioport; | |
120 | unsigned int scratch_reg; | |
121 | ||
122 | const char *helper; | |
123 | const char *firmware; | |
124 | bool helper_allocated; | |
125 | bool firmware_allocated; | |
126 | ||
127 | u8 buffer[65536] __attribute__((aligned(4))); | |
128 | ||
129 | spinlock_t lock; | |
130 | struct if_sdio_packet *packets; | |
131 | ||
132 | struct workqueue_struct *workqueue; | |
133 | struct work_struct packet_worker; | |
134 | ||
135 | u8 rx_unit; | |
136 | }; | |
137 | ||
138 | /********************************************************************/ | |
139 | /* I/O */ | |
140 | /********************************************************************/ | |
141 | ||
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 | */ | |
148 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) | |
149 | { | |
150 | int ret; | |
151 | u16 scratch; | |
152 | ||
153 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); | |
154 | if (!ret) | |
155 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, | |
156 | &ret) << 8; | |
157 | ||
158 | if (err) | |
159 | *err = ret; | |
160 | ||
161 | if (ret) | |
162 | return 0xffff; | |
163 | ||
164 | return scratch; | |
165 | } | |
166 | ||
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 MODEL_8385: | |
187 | case MODEL_8686: | |
188 | rx_len = if_sdio_read_scratch(card, &ret); | |
189 | break; | |
190 | case 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 | ||
207 | static int if_sdio_handle_cmd(struct if_sdio_card *card, | |
208 | u8 *buffer, unsigned size) | |
209 | { | |
210 | struct lbs_private *priv = card->priv; | |
211 | int ret; | |
212 | unsigned long flags; | |
213 | u8 i; | |
214 | ||
215 | lbs_deb_enter(LBS_DEB_SDIO); | |
216 | ||
217 | if (size > LBS_CMD_BUFFER_SIZE) { | |
218 | lbs_deb_sdio("response packet too large (%d bytes)\n", | |
219 | (int)size); | |
220 | ret = -E2BIG; | |
221 | goto out; | |
222 | } | |
223 | ||
224 | spin_lock_irqsave(&priv->driver_lock, flags); | |
225 | ||
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); | |
231 | ||
232 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); | |
233 | ||
234 | ret = 0; | |
235 | ||
236 | out: | |
237 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
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 | ||
257 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); | |
258 | if (!skb) { | |
259 | ret = -ENOMEM; | |
260 | goto out; | |
261 | } | |
262 | ||
263 | skb_reserve(skb, NET_IP_ALIGN); | |
264 | ||
265 | data = skb_put(skb, size); | |
266 | ||
267 | memcpy(data, buffer, size); | |
268 | ||
269 | lbs_process_rxed_packet(card->priv, skb); | |
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; | |
283 | u32 event; | |
284 | ||
285 | lbs_deb_enter(LBS_DEB_SDIO); | |
286 | ||
287 | if (card->model == MODEL_8385) { | |
288 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); | |
289 | if (ret) | |
290 | goto out; | |
291 | ||
292 | /* right shift 3 bits to get the event id */ | |
293 | event >>= 3; | |
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; | |
305 | } | |
306 | ||
307 | lbs_queue_event(card->priv, event & 0xFF); | |
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_wait_status(struct if_sdio_card *card, const u8 condition) | |
317 | { | |
318 | u8 status; | |
319 | unsigned long timeout; | |
320 | int ret = 0; | |
321 | ||
322 | timeout = jiffies + HZ; | |
323 | while (1) { | |
324 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
325 | if (ret) | |
326 | return ret; | |
327 | if ((status & condition) == condition) | |
328 | break; | |
329 | if (time_after(jiffies, timeout)) | |
330 | return -ETIMEDOUT; | |
331 | mdelay(1); | |
332 | } | |
333 | return ret; | |
334 | } | |
335 | ||
336 | static int if_sdio_card_to_host(struct if_sdio_card *card) | |
337 | { | |
338 | int ret; | |
339 | u16 size, type, chunk; | |
340 | ||
341 | lbs_deb_enter(LBS_DEB_SDIO); | |
342 | ||
343 | size = if_sdio_read_rx_len(card, &ret); | |
344 | if (ret) | |
345 | goto out; | |
346 | ||
347 | if (size < 4) { | |
348 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", | |
349 | (int)size); | |
350 | ret = -EINVAL; | |
351 | goto out; | |
352 | } | |
353 | ||
354 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); | |
355 | if (ret) | |
356 | goto out; | |
357 | ||
358 | /* | |
359 | * The transfer must be in one transaction or the firmware | |
360 | * goes suicidal. There's no way to guarantee that for all | |
361 | * controllers, but we can at least try. | |
362 | */ | |
363 | chunk = sdio_align_size(card->func, size); | |
364 | ||
365 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); | |
366 | if (ret) | |
367 | goto out; | |
368 | ||
369 | chunk = card->buffer[0] | (card->buffer[1] << 8); | |
370 | type = card->buffer[2] | (card->buffer[3] << 8); | |
371 | ||
372 | lbs_deb_sdio("packet of type %d and size %d bytes\n", | |
373 | (int)type, (int)chunk); | |
374 | ||
375 | if (chunk > size) { | |
376 | lbs_deb_sdio("packet fragment (%d > %d)\n", | |
377 | (int)chunk, (int)size); | |
378 | ret = -EINVAL; | |
379 | goto out; | |
380 | } | |
381 | ||
382 | if (chunk < size) { | |
383 | lbs_deb_sdio("packet fragment (%d < %d)\n", | |
384 | (int)chunk, (int)size); | |
385 | } | |
386 | ||
387 | switch (type) { | |
388 | case MVMS_CMD: | |
389 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); | |
390 | if (ret) | |
391 | goto out; | |
392 | break; | |
393 | case MVMS_DAT: | |
394 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); | |
395 | if (ret) | |
396 | goto out; | |
397 | break; | |
398 | case MVMS_EVENT: | |
399 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); | |
400 | if (ret) | |
401 | goto out; | |
402 | break; | |
403 | default: | |
404 | lbs_deb_sdio("invalid type (%d) from firmware\n", | |
405 | (int)type); | |
406 | ret = -EINVAL; | |
407 | goto out; | |
408 | } | |
409 | ||
410 | out: | |
411 | if (ret) | |
412 | lbs_pr_err("problem fetching packet from firmware\n"); | |
413 | ||
414 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
415 | ||
416 | return ret; | |
417 | } | |
418 | ||
419 | static void if_sdio_host_to_card_worker(struct work_struct *work) | |
420 | { | |
421 | struct if_sdio_card *card; | |
422 | struct if_sdio_packet *packet; | |
423 | int ret; | |
424 | unsigned long flags; | |
425 | ||
426 | lbs_deb_enter(LBS_DEB_SDIO); | |
427 | ||
428 | card = container_of(work, struct if_sdio_card, packet_worker); | |
429 | ||
430 | while (1) { | |
431 | spin_lock_irqsave(&card->lock, flags); | |
432 | packet = card->packets; | |
433 | if (packet) | |
434 | card->packets = packet->next; | |
435 | spin_unlock_irqrestore(&card->lock, flags); | |
436 | ||
437 | if (!packet) | |
438 | break; | |
439 | ||
440 | sdio_claim_host(card->func); | |
441 | ||
442 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); | |
443 | if (ret == 0) { | |
444 | ret = sdio_writesb(card->func, card->ioport, | |
445 | packet->buffer, packet->nb); | |
446 | } | |
447 | ||
448 | if (ret) | |
449 | lbs_pr_err("error %d sending packet to firmware\n", ret); | |
450 | ||
451 | sdio_release_host(card->func); | |
452 | ||
453 | kfree(packet); | |
454 | } | |
455 | ||
456 | lbs_deb_leave(LBS_DEB_SDIO); | |
457 | } | |
458 | ||
459 | /********************************************************************/ | |
460 | /* Firmware */ | |
461 | /********************************************************************/ | |
462 | ||
463 | #define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY) | |
464 | ||
465 | static int if_sdio_prog_helper(struct if_sdio_card *card, | |
466 | const struct firmware *fw) | |
467 | { | |
468 | int ret; | |
469 | unsigned long timeout; | |
470 | u8 *chunk_buffer; | |
471 | u32 chunk_size; | |
472 | const u8 *firmware; | |
473 | size_t size; | |
474 | ||
475 | lbs_deb_enter(LBS_DEB_SDIO); | |
476 | ||
477 | chunk_buffer = kzalloc(64, GFP_KERNEL); | |
478 | if (!chunk_buffer) { | |
479 | ret = -ENOMEM; | |
480 | goto out; | |
481 | } | |
482 | ||
483 | sdio_claim_host(card->func); | |
484 | ||
485 | ret = sdio_set_block_size(card->func, 32); | |
486 | if (ret) | |
487 | goto release; | |
488 | ||
489 | firmware = fw->data; | |
490 | size = fw->size; | |
491 | ||
492 | while (size) { | |
493 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); | |
494 | if (ret) | |
495 | goto release; | |
496 | ||
497 | /* On some platforms (like Davinci) the chip needs more time | |
498 | * between helper blocks. | |
499 | */ | |
500 | mdelay(2); | |
501 | ||
502 | chunk_size = min(size, (size_t)60); | |
503 | ||
504 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); | |
505 | memcpy(chunk_buffer + 4, firmware, chunk_size); | |
506 | /* | |
507 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); | |
508 | */ | |
509 | ret = sdio_writesb(card->func, card->ioport, | |
510 | chunk_buffer, 64); | |
511 | if (ret) | |
512 | goto release; | |
513 | ||
514 | firmware += chunk_size; | |
515 | size -= chunk_size; | |
516 | } | |
517 | ||
518 | /* an empty block marks the end of the transfer */ | |
519 | memset(chunk_buffer, 0, 4); | |
520 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); | |
521 | if (ret) | |
522 | goto release; | |
523 | ||
524 | lbs_deb_sdio("waiting for helper to boot...\n"); | |
525 | ||
526 | /* wait for the helper to boot by looking at the size register */ | |
527 | timeout = jiffies + HZ; | |
528 | while (1) { | |
529 | u16 req_size; | |
530 | ||
531 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
532 | if (ret) | |
533 | goto release; | |
534 | ||
535 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
536 | if (ret) | |
537 | goto release; | |
538 | ||
539 | if (req_size != 0) | |
540 | break; | |
541 | ||
542 | if (time_after(jiffies, timeout)) { | |
543 | ret = -ETIMEDOUT; | |
544 | goto release; | |
545 | } | |
546 | ||
547 | msleep(10); | |
548 | } | |
549 | ||
550 | ret = 0; | |
551 | ||
552 | release: | |
553 | sdio_release_host(card->func); | |
554 | kfree(chunk_buffer); | |
555 | ||
556 | out: | |
557 | if (ret) | |
558 | lbs_pr_err("failed to load helper firmware\n"); | |
559 | ||
560 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
561 | return ret; | |
562 | } | |
563 | ||
564 | static int if_sdio_prog_real(struct if_sdio_card *card, | |
565 | const struct firmware *fw) | |
566 | { | |
567 | int ret; | |
568 | unsigned long timeout; | |
569 | u8 *chunk_buffer; | |
570 | u32 chunk_size; | |
571 | const u8 *firmware; | |
572 | size_t size, req_size; | |
573 | ||
574 | lbs_deb_enter(LBS_DEB_SDIO); | |
575 | ||
576 | chunk_buffer = kzalloc(512, GFP_KERNEL); | |
577 | if (!chunk_buffer) { | |
578 | ret = -ENOMEM; | |
579 | goto out; | |
580 | } | |
581 | ||
582 | sdio_claim_host(card->func); | |
583 | ||
584 | ret = sdio_set_block_size(card->func, 32); | |
585 | if (ret) | |
586 | goto release; | |
587 | ||
588 | firmware = fw->data; | |
589 | size = fw->size; | |
590 | ||
591 | while (size) { | |
592 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); | |
593 | if (ret) | |
594 | goto release; | |
595 | ||
596 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
597 | if (ret) | |
598 | goto release; | |
599 | ||
600 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
601 | if (ret) | |
602 | goto release; | |
603 | /* | |
604 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
605 | */ | |
606 | if (req_size == 0) { | |
607 | lbs_deb_sdio("firmware helper gave up early\n"); | |
608 | ret = -EIO; | |
609 | goto release; | |
610 | } | |
611 | ||
612 | if (req_size & 0x01) { | |
613 | lbs_deb_sdio("firmware helper signalled error\n"); | |
614 | ret = -EIO; | |
615 | goto release; | |
616 | } | |
617 | ||
618 | if (req_size > size) | |
619 | req_size = size; | |
620 | ||
621 | while (req_size) { | |
622 | chunk_size = min(req_size, (size_t)512); | |
623 | ||
624 | memcpy(chunk_buffer, firmware, chunk_size); | |
625 | /* | |
626 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
627 | chunk_size, (chunk_size + 31) / 32 * 32); | |
628 | */ | |
629 | ret = sdio_writesb(card->func, card->ioport, | |
630 | chunk_buffer, roundup(chunk_size, 32)); | |
631 | if (ret) | |
632 | goto release; | |
633 | ||
634 | firmware += chunk_size; | |
635 | size -= chunk_size; | |
636 | req_size -= chunk_size; | |
637 | } | |
638 | } | |
639 | ||
640 | ret = 0; | |
641 | ||
642 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
643 | ||
644 | /* wait for the firmware to boot */ | |
645 | timeout = jiffies + HZ; | |
646 | while (1) { | |
647 | u16 scratch; | |
648 | ||
649 | scratch = if_sdio_read_scratch(card, &ret); | |
650 | if (ret) | |
651 | goto release; | |
652 | ||
653 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
654 | break; | |
655 | ||
656 | if (time_after(jiffies, timeout)) { | |
657 | ret = -ETIMEDOUT; | |
658 | goto release; | |
659 | } | |
660 | ||
661 | msleep(10); | |
662 | } | |
663 | ||
664 | ret = 0; | |
665 | ||
666 | release: | |
667 | sdio_release_host(card->func); | |
668 | kfree(chunk_buffer); | |
669 | ||
670 | out: | |
671 | if (ret) | |
672 | lbs_pr_err("failed to load firmware\n"); | |
673 | ||
674 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
675 | return ret; | |
676 | } | |
677 | ||
678 | static int if_sdio_prog_firmware(struct if_sdio_card *card) | |
679 | { | |
680 | int ret; | |
681 | u16 scratch; | |
682 | const struct firmware *helper = NULL; | |
683 | const struct firmware *mainfw = NULL; | |
684 | ||
685 | lbs_deb_enter(LBS_DEB_SDIO); | |
686 | ||
687 | /* | |
688 | * Disable interrupts | |
689 | */ | |
690 | sdio_claim_host(card->func); | |
691 | sdio_writeb(card->func, 0x00, IF_SDIO_H_INT_MASK, &ret); | |
692 | sdio_release_host(card->func); | |
693 | ||
694 | sdio_claim_host(card->func); | |
695 | scratch = if_sdio_read_scratch(card, &ret); | |
696 | sdio_release_host(card->func); | |
697 | ||
698 | lbs_deb_sdio("firmware status = %#x\n", scratch); | |
699 | lbs_deb_sdio("scratch ret = %d\n", ret); | |
700 | ||
701 | if (ret) | |
702 | goto out; | |
703 | ||
704 | ||
705 | /* | |
706 | * The manual clearly describes that FEDC is the right code to use | |
707 | * to detect firmware presence, but for SD8686 it is not that simple. | |
708 | * Scratch is also used to store the RX packet length, so we lose | |
709 | * the FEDC value early on. So we use a non-zero check in order | |
710 | * to validate firmware presence. | |
711 | * Additionally, the SD8686 in the Gumstix always has the high scratch | |
712 | * bit set, even when the firmware is not loaded. So we have to | |
713 | * exclude that from the test. | |
714 | */ | |
715 | if (scratch == IF_SDIO_FIRMWARE_OK) { | |
716 | lbs_deb_sdio("firmware already loaded\n"); | |
717 | goto success; | |
718 | } else if ((card->model == MODEL_8686) && (scratch & 0x7fff)) { | |
719 | lbs_deb_sdio("firmware may be running\n"); | |
720 | goto success; | |
721 | } | |
722 | ||
723 | ret = lbs_get_firmware(&card->func->dev, lbs_helper_name, lbs_fw_name, | |
724 | card->model, &fw_table[0], &helper, &mainfw); | |
725 | if (ret) { | |
726 | lbs_pr_err("failed to find firmware (%d)\n", ret); | |
727 | goto out; | |
728 | } | |
729 | ||
730 | ret = if_sdio_prog_helper(card, helper); | |
731 | if (ret) | |
732 | goto out; | |
733 | ||
734 | lbs_deb_sdio("Helper firmware loaded\n"); | |
735 | ||
736 | ret = if_sdio_prog_real(card, mainfw); | |
737 | if (ret) | |
738 | goto out; | |
739 | ||
740 | lbs_deb_sdio("Firmware loaded\n"); | |
741 | ||
742 | success: | |
743 | sdio_claim_host(card->func); | |
744 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); | |
745 | sdio_release_host(card->func); | |
746 | ret = 0; | |
747 | ||
748 | out: | |
749 | if (helper) | |
750 | release_firmware(helper); | |
751 | if (mainfw) | |
752 | release_firmware(mainfw); | |
753 | ||
754 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
755 | return ret; | |
756 | } | |
757 | ||
758 | /*******************************************************************/ | |
759 | /* Libertas callbacks */ | |
760 | /*******************************************************************/ | |
761 | ||
762 | static int if_sdio_host_to_card(struct lbs_private *priv, | |
763 | u8 type, u8 *buf, u16 nb) | |
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 | |
782 | * goes suicidal. There's no way to guarantee that for all | |
783 | * controllers, but we can at least try. | |
784 | */ | |
785 | size = sdio_align_size(card->func, nb + 4); | |
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 | ||
831 | queue_work(card->workqueue, &card->packet_worker); | |
832 | ||
833 | ret = 0; | |
834 | ||
835 | out: | |
836 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
837 | ||
838 | return ret; | |
839 | } | |
840 | ||
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 | ||
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 | */ | |
921 | card->priv->is_activity_detected = 1; | |
922 | if (cause & IF_SDIO_H_INT_DNLD) | |
923 | lbs_host_to_card_done(card->priv); | |
924 | ||
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; | |
942 | struct lbs_private *priv; | |
943 | int ret, i; | |
944 | unsigned int model; | |
945 | struct if_sdio_packet *packet; | |
946 | struct mmc_host *host = func->card->host; | |
947 | ||
948 | lbs_deb_enter(LBS_DEB_SDIO); | |
949 | ||
950 | for (i = 0;i < func->card->num_info;i++) { | |
951 | if (sscanf(func->card->info[i], | |
952 | "802.11 SDIO ID: %x", &model) == 1) | |
953 | break; | |
954 | if (sscanf(func->card->info[i], | |
955 | "ID: %x", &model) == 1) | |
956 | break; | |
957 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { | |
958 | model = MODEL_8385; | |
959 | break; | |
960 | } | |
961 | } | |
962 | ||
963 | if (i == func->card->num_info) { | |
964 | lbs_pr_err("unable to identify card model\n"); | |
965 | return -ENODEV; | |
966 | } | |
967 | ||
968 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
969 | if (!card) | |
970 | return -ENOMEM; | |
971 | ||
972 | card->func = func; | |
973 | card->model = model; | |
974 | ||
975 | switch (card->model) { | |
976 | case MODEL_8385: | |
977 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; | |
978 | break; | |
979 | case MODEL_8686: | |
980 | card->scratch_reg = IF_SDIO_SCRATCH; | |
981 | break; | |
982 | case MODEL_8688: | |
983 | default: /* for newer chipsets */ | |
984 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
985 | break; | |
986 | } | |
987 | ||
988 | spin_lock_init(&card->lock); | |
989 | card->workqueue = create_workqueue("libertas_sdio"); | |
990 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); | |
991 | ||
992 | /* Check if we support this card */ | |
993 | for (i = 0; i < ARRAY_SIZE(fw_table); i++) { | |
994 | if (card->model == fw_table[i].model) | |
995 | break; | |
996 | } | |
997 | if (i == ARRAY_SIZE(fw_table)) { | |
998 | lbs_pr_err("unknown card model 0x%x\n", card->model); | |
999 | ret = -ENODEV; | |
1000 | goto free; | |
1001 | } | |
1002 | ||
1003 | sdio_claim_host(func); | |
1004 | ||
1005 | ret = sdio_enable_func(func); | |
1006 | if (ret) | |
1007 | goto release; | |
1008 | ||
1009 | ret = sdio_claim_irq(func, if_sdio_interrupt); | |
1010 | if (ret) | |
1011 | goto disable; | |
1012 | ||
1013 | /* For 1-bit transfers to the 8686 model, we need to enable the | |
1014 | * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0 | |
1015 | * bit to allow access to non-vendor registers. */ | |
1016 | if ((card->model == MODEL_8686) && | |
1017 | (host->caps & MMC_CAP_SDIO_IRQ) && | |
1018 | (host->ios.bus_width == MMC_BUS_WIDTH_1)) { | |
1019 | u8 reg; | |
1020 | ||
1021 | func->card->quirks |= MMC_QUIRK_LENIENT_FN0; | |
1022 | reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret); | |
1023 | if (ret) | |
1024 | goto release_int; | |
1025 | ||
1026 | reg |= SDIO_BUS_ECSI; | |
1027 | sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret); | |
1028 | if (ret) | |
1029 | goto release_int; | |
1030 | } | |
1031 | ||
1032 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); | |
1033 | if (ret) | |
1034 | goto release_int; | |
1035 | ||
1036 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; | |
1037 | if (ret) | |
1038 | goto release_int; | |
1039 | ||
1040 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; | |
1041 | if (ret) | |
1042 | goto release_int; | |
1043 | ||
1044 | sdio_release_host(func); | |
1045 | ||
1046 | sdio_set_drvdata(func, card); | |
1047 | ||
1048 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " | |
1049 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", | |
1050 | func->class, func->vendor, func->device, | |
1051 | model, (unsigned)card->ioport); | |
1052 | ||
1053 | ret = if_sdio_prog_firmware(card); | |
1054 | if (ret) | |
1055 | goto reclaim; | |
1056 | ||
1057 | priv = lbs_add_card(card, &func->dev); | |
1058 | if (!priv) { | |
1059 | ret = -ENOMEM; | |
1060 | goto reclaim; | |
1061 | } | |
1062 | ||
1063 | card->priv = priv; | |
1064 | ||
1065 | priv->card = card; | |
1066 | priv->hw_host_to_card = if_sdio_host_to_card; | |
1067 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; | |
1068 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; | |
1069 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; | |
1070 | ||
1071 | sdio_claim_host(func); | |
1072 | ||
1073 | /* | |
1074 | * Get rx_unit if the chip is SD8688 or newer. | |
1075 | * SD8385 & SD8686 do not have rx_unit. | |
1076 | */ | |
1077 | if ((card->model != MODEL_8385) | |
1078 | && (card->model != MODEL_8686)) | |
1079 | card->rx_unit = if_sdio_read_rx_unit(card); | |
1080 | else | |
1081 | card->rx_unit = 0; | |
1082 | ||
1083 | /* | |
1084 | * Enable interrupts now that everything is set up | |
1085 | */ | |
1086 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); | |
1087 | sdio_release_host(func); | |
1088 | if (ret) | |
1089 | goto reclaim; | |
1090 | ||
1091 | priv->fw_ready = 1; | |
1092 | ||
1093 | /* | |
1094 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions | |
1095 | */ | |
1096 | if (card->model == MODEL_8688) { | |
1097 | struct cmd_header cmd; | |
1098 | ||
1099 | memset(&cmd, 0, sizeof(cmd)); | |
1100 | ||
1101 | lbs_deb_sdio("send function INIT command\n"); | |
1102 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), | |
1103 | lbs_cmd_copyback, (unsigned long) &cmd)) | |
1104 | lbs_pr_alert("CMD_FUNC_INIT cmd failed\n"); | |
1105 | } | |
1106 | ||
1107 | ret = lbs_start_card(priv); | |
1108 | if (ret) | |
1109 | goto err_activate_card; | |
1110 | ||
1111 | out: | |
1112 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1113 | ||
1114 | return ret; | |
1115 | ||
1116 | err_activate_card: | |
1117 | flush_workqueue(card->workqueue); | |
1118 | lbs_remove_card(priv); | |
1119 | reclaim: | |
1120 | sdio_claim_host(func); | |
1121 | release_int: | |
1122 | sdio_release_irq(func); | |
1123 | disable: | |
1124 | sdio_disable_func(func); | |
1125 | release: | |
1126 | sdio_release_host(func); | |
1127 | free: | |
1128 | destroy_workqueue(card->workqueue); | |
1129 | while (card->packets) { | |
1130 | packet = card->packets; | |
1131 | card->packets = card->packets->next; | |
1132 | kfree(packet); | |
1133 | } | |
1134 | ||
1135 | if (card->helper_allocated) | |
1136 | kfree(card->helper); | |
1137 | if (card->firmware_allocated) | |
1138 | kfree(card->firmware); | |
1139 | kfree(card); | |
1140 | ||
1141 | goto out; | |
1142 | } | |
1143 | ||
1144 | static void if_sdio_remove(struct sdio_func *func) | |
1145 | { | |
1146 | struct if_sdio_card *card; | |
1147 | struct if_sdio_packet *packet; | |
1148 | ||
1149 | lbs_deb_enter(LBS_DEB_SDIO); | |
1150 | ||
1151 | card = sdio_get_drvdata(func); | |
1152 | ||
1153 | if (user_rmmod && (card->model == MODEL_8688)) { | |
1154 | /* | |
1155 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1156 | * multiple functions | |
1157 | */ | |
1158 | struct cmd_header cmd; | |
1159 | ||
1160 | memset(&cmd, 0, sizeof(cmd)); | |
1161 | ||
1162 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1163 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1164 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1165 | (unsigned long) &cmd)) | |
1166 | lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); | |
1167 | } | |
1168 | ||
1169 | ||
1170 | lbs_deb_sdio("call remove card\n"); | |
1171 | lbs_stop_card(card->priv); | |
1172 | lbs_remove_card(card->priv); | |
1173 | card->priv->surpriseremoved = 1; | |
1174 | ||
1175 | flush_workqueue(card->workqueue); | |
1176 | destroy_workqueue(card->workqueue); | |
1177 | ||
1178 | sdio_claim_host(func); | |
1179 | sdio_release_irq(func); | |
1180 | sdio_disable_func(func); | |
1181 | sdio_release_host(func); | |
1182 | ||
1183 | while (card->packets) { | |
1184 | packet = card->packets; | |
1185 | card->packets = card->packets->next; | |
1186 | kfree(packet); | |
1187 | } | |
1188 | ||
1189 | if (card->helper_allocated) | |
1190 | kfree(card->helper); | |
1191 | if (card->firmware_allocated) | |
1192 | kfree(card->firmware); | |
1193 | kfree(card); | |
1194 | ||
1195 | lbs_deb_leave(LBS_DEB_SDIO); | |
1196 | } | |
1197 | ||
1198 | static int if_sdio_suspend(struct device *dev) | |
1199 | { | |
1200 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1201 | int ret; | |
1202 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1203 | ||
1204 | mmc_pm_flag_t flags = sdio_get_host_pm_caps(func); | |
1205 | ||
1206 | lbs_pr_info("%s: suspend: PM flags = 0x%x\n", | |
1207 | sdio_func_id(func), flags); | |
1208 | ||
1209 | /* If we aren't being asked to wake on anything, we should bail out | |
1210 | * and let the SD stack power down the card. | |
1211 | */ | |
1212 | if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) { | |
1213 | lbs_pr_info("Suspend without wake params -- " | |
1214 | "powering down card."); | |
1215 | return -ENOSYS; | |
1216 | } | |
1217 | ||
1218 | if (!(flags & MMC_PM_KEEP_POWER)) { | |
1219 | lbs_pr_err("%s: cannot remain alive while host is suspended\n", | |
1220 | sdio_func_id(func)); | |
1221 | return -ENOSYS; | |
1222 | } | |
1223 | ||
1224 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
1225 | if (ret) | |
1226 | return ret; | |
1227 | ||
1228 | ret = lbs_suspend(card->priv); | |
1229 | if (ret) | |
1230 | return ret; | |
1231 | ||
1232 | return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); | |
1233 | } | |
1234 | ||
1235 | static int if_sdio_resume(struct device *dev) | |
1236 | { | |
1237 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1238 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1239 | int ret; | |
1240 | ||
1241 | lbs_pr_info("%s: resume: we're back\n", sdio_func_id(func)); | |
1242 | ||
1243 | ret = lbs_resume(card->priv); | |
1244 | ||
1245 | return ret; | |
1246 | } | |
1247 | ||
1248 | static const struct dev_pm_ops if_sdio_pm_ops = { | |
1249 | .suspend = if_sdio_suspend, | |
1250 | .resume = if_sdio_resume, | |
1251 | }; | |
1252 | ||
1253 | static struct sdio_driver if_sdio_driver = { | |
1254 | .name = "libertas_sdio", | |
1255 | .id_table = if_sdio_ids, | |
1256 | .probe = if_sdio_probe, | |
1257 | .remove = if_sdio_remove, | |
1258 | .drv = { | |
1259 | .pm = &if_sdio_pm_ops, | |
1260 | }, | |
1261 | }; | |
1262 | ||
1263 | /*******************************************************************/ | |
1264 | /* Module functions */ | |
1265 | /*******************************************************************/ | |
1266 | ||
1267 | static int __init if_sdio_init_module(void) | |
1268 | { | |
1269 | int ret = 0; | |
1270 | ||
1271 | lbs_deb_enter(LBS_DEB_SDIO); | |
1272 | ||
1273 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1274 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1275 | ||
1276 | ret = sdio_register_driver(&if_sdio_driver); | |
1277 | ||
1278 | /* Clear the flag in case user removes the card. */ | |
1279 | user_rmmod = 0; | |
1280 | ||
1281 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1282 | ||
1283 | return ret; | |
1284 | } | |
1285 | ||
1286 | static void __exit if_sdio_exit_module(void) | |
1287 | { | |
1288 | lbs_deb_enter(LBS_DEB_SDIO); | |
1289 | ||
1290 | /* Set the flag as user is removing this module. */ | |
1291 | user_rmmod = 1; | |
1292 | ||
1293 | sdio_unregister_driver(&if_sdio_driver); | |
1294 | ||
1295 | lbs_deb_leave(LBS_DEB_SDIO); | |
1296 | } | |
1297 | ||
1298 | module_init(if_sdio_init_module); | |
1299 | module_exit(if_sdio_exit_module); | |
1300 | ||
1301 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1302 | MODULE_AUTHOR("Pierre Ossman"); | |
1303 | MODULE_LICENSE("GPL"); |