Commit | Line | Data |
---|---|---|
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> | |
8a64c0f6 DM |
38 | #include <linux/mmc/sdio.h> |
39 | #include <linux/mmc/host.h> | |
727c26ed PO |
40 | |
41 | #include "host.h" | |
42 | #include "decl.h" | |
43 | #include "defs.h" | |
44 | #include "dev.h" | |
6bc61f4d | 45 | #include "cmd.h" |
727c26ed PO |
46 | #include "if_sdio.h" |
47 | ||
6bc61f4d BZ |
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 | ||
10078321 HS |
63 | static char *lbs_helper_name = NULL; |
64 | module_param_named(helper_name, lbs_helper_name, charp, 0644); | |
727c26ed | 65 | |
10078321 HS |
66 | static char *lbs_fw_name = NULL; |
67 | module_param_named(fw_name, lbs_fw_name, charp, 0644); | |
727c26ed PO |
68 | |
69 | static const struct sdio_device_id if_sdio_ids[] = { | |
e45d8e53 BZ |
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 */ }, | |
727c26ed PO |
75 | }; |
76 | ||
77 | MODULE_DEVICE_TABLE(sdio, if_sdio_ids); | |
78 | ||
79 | struct if_sdio_model { | |
80 | int model; | |
81 | const char *helper; | |
82 | const char *firmware; | |
83 | }; | |
84 | ||
85 | static struct if_sdio_model if_sdio_models[] = { | |
86 | { | |
87 | /* 8385 */ | |
e70a5ac5 | 88 | .model = IF_SDIO_MODEL_8385, |
727c26ed PO |
89 | .helper = "sd8385_helper.bin", |
90 | .firmware = "sd8385.bin", | |
91 | }, | |
92 | { | |
93 | /* 8686 */ | |
e70a5ac5 | 94 | .model = IF_SDIO_MODEL_8686, |
727c26ed PO |
95 | .helper = "sd8686_helper.bin", |
96 | .firmware = "sd8686.bin", | |
97 | }, | |
e45d8e53 BZ |
98 | { |
99 | /* 8688 */ | |
e70a5ac5 | 100 | .model = IF_SDIO_MODEL_8688, |
e45d8e53 BZ |
101 | .helper = "sd8688_helper.bin", |
102 | .firmware = "sd8688.bin", | |
103 | }, | |
727c26ed | 104 | }; |
a974a4bb BH |
105 | MODULE_FIRMWARE("sd8385_helper.bin"); |
106 | MODULE_FIRMWARE("sd8385.bin"); | |
107 | MODULE_FIRMWARE("sd8686_helper.bin"); | |
108 | MODULE_FIRMWARE("sd8686.bin"); | |
109 | MODULE_FIRMWARE("sd8688_helper.bin"); | |
110 | MODULE_FIRMWARE("sd8688.bin"); | |
727c26ed PO |
111 | |
112 | struct if_sdio_packet { | |
113 | struct if_sdio_packet *next; | |
114 | u16 nb; | |
115 | u8 buffer[0] __attribute__((aligned(4))); | |
116 | }; | |
117 | ||
118 | struct if_sdio_card { | |
119 | struct sdio_func *func; | |
69f9032d | 120 | struct lbs_private *priv; |
727c26ed PO |
121 | |
122 | int model; | |
123 | unsigned long ioport; | |
2c7e5798 | 124 | unsigned int scratch_reg; |
727c26ed PO |
125 | |
126 | const char *helper; | |
127 | const char *firmware; | |
886275ce RR |
128 | bool helper_allocated; |
129 | bool firmware_allocated; | |
727c26ed PO |
130 | |
131 | u8 buffer[65536]; | |
727c26ed PO |
132 | |
133 | spinlock_t lock; | |
134 | struct if_sdio_packet *packets; | |
9b02f419 DW |
135 | |
136 | struct workqueue_struct *workqueue; | |
727c26ed | 137 | struct work_struct packet_worker; |
b136a141 BZ |
138 | |
139 | u8 rx_unit; | |
727c26ed PO |
140 | }; |
141 | ||
142 | /********************************************************************/ | |
143 | /* I/O */ | |
144 | /********************************************************************/ | |
145 | ||
2c7e5798 BZ |
146 | /* |
147 | * For SD8385/SD8686, this function reads firmware status after | |
148 | * the image is downloaded, or reads RX packet length when | |
149 | * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received. | |
150 | * For SD8688, this function reads firmware status only. | |
151 | */ | |
727c26ed PO |
152 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) |
153 | { | |
2c7e5798 | 154 | int ret; |
727c26ed PO |
155 | u16 scratch; |
156 | ||
2c7e5798 | 157 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); |
727c26ed | 158 | if (!ret) |
2c7e5798 BZ |
159 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, |
160 | &ret) << 8; | |
727c26ed PO |
161 | |
162 | if (err) | |
163 | *err = ret; | |
164 | ||
165 | if (ret) | |
166 | return 0xffff; | |
167 | ||
168 | return scratch; | |
169 | } | |
170 | ||
b136a141 BZ |
171 | static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) |
172 | { | |
173 | int ret; | |
174 | u8 rx_unit; | |
175 | ||
176 | rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); | |
177 | ||
178 | if (ret) | |
179 | rx_unit = 0; | |
180 | ||
181 | return rx_unit; | |
182 | } | |
183 | ||
184 | static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) | |
185 | { | |
186 | int ret; | |
187 | u16 rx_len; | |
188 | ||
189 | switch (card->model) { | |
190 | case IF_SDIO_MODEL_8385: | |
191 | case IF_SDIO_MODEL_8686: | |
192 | rx_len = if_sdio_read_scratch(card, &ret); | |
193 | break; | |
194 | case IF_SDIO_MODEL_8688: | |
195 | default: /* for newer chipsets */ | |
196 | rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); | |
197 | if (!ret) | |
198 | rx_len <<= card->rx_unit; | |
199 | else | |
200 | rx_len = 0xffff; /* invalid length */ | |
201 | ||
202 | break; | |
203 | } | |
204 | ||
205 | if (err) | |
206 | *err = ret; | |
207 | ||
208 | return rx_len; | |
209 | } | |
210 | ||
727c26ed PO |
211 | static int if_sdio_handle_cmd(struct if_sdio_card *card, |
212 | u8 *buffer, unsigned size) | |
213 | { | |
7919b89c | 214 | struct lbs_private *priv = card->priv; |
727c26ed PO |
215 | int ret; |
216 | unsigned long flags; | |
7919b89c | 217 | u8 i; |
727c26ed PO |
218 | |
219 | lbs_deb_enter(LBS_DEB_SDIO); | |
220 | ||
ddac4526 | 221 | if (size > LBS_CMD_BUFFER_SIZE) { |
727c26ed PO |
222 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
223 | (int)size); | |
224 | ret = -E2BIG; | |
225 | goto out; | |
226 | } | |
227 | ||
7919b89c | 228 | spin_lock_irqsave(&priv->driver_lock, flags); |
727c26ed | 229 | |
7919b89c HS |
230 | i = (priv->resp_idx == 0) ? 1 : 0; |
231 | BUG_ON(priv->resp_len[i]); | |
232 | priv->resp_len[i] = size; | |
233 | memcpy(priv->resp_buf[i], buffer, size); | |
234 | lbs_notify_command_response(priv, i); | |
727c26ed | 235 | |
7919b89c | 236 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); |
727c26ed PO |
237 | |
238 | ret = 0; | |
239 | ||
240 | out: | |
727c26ed | 241 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
242 | return ret; |
243 | } | |
244 | ||
245 | static int if_sdio_handle_data(struct if_sdio_card *card, | |
246 | u8 *buffer, unsigned size) | |
247 | { | |
248 | int ret; | |
249 | struct sk_buff *skb; | |
250 | char *data; | |
251 | ||
252 | lbs_deb_enter(LBS_DEB_SDIO); | |
253 | ||
254 | if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { | |
255 | lbs_deb_sdio("response packet too large (%d bytes)\n", | |
256 | (int)size); | |
257 | ret = -E2BIG; | |
258 | goto out; | |
259 | } | |
260 | ||
51e6b712 | 261 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); |
727c26ed PO |
262 | if (!skb) { |
263 | ret = -ENOMEM; | |
264 | goto out; | |
265 | } | |
266 | ||
51e6b712 PO |
267 | skb_reserve(skb, NET_IP_ALIGN); |
268 | ||
727c26ed PO |
269 | data = skb_put(skb, size); |
270 | ||
271 | memcpy(data, buffer, size); | |
272 | ||
10078321 | 273 | lbs_process_rxed_packet(card->priv, skb); |
727c26ed PO |
274 | |
275 | ret = 0; | |
276 | ||
277 | out: | |
278 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
279 | ||
280 | return ret; | |
281 | } | |
282 | ||
283 | static int if_sdio_handle_event(struct if_sdio_card *card, | |
284 | u8 *buffer, unsigned size) | |
285 | { | |
286 | int ret; | |
727c26ed PO |
287 | u32 event; |
288 | ||
289 | lbs_deb_enter(LBS_DEB_SDIO); | |
290 | ||
e70a5ac5 | 291 | if (card->model == IF_SDIO_MODEL_8385) { |
727c26ed PO |
292 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); |
293 | if (ret) | |
294 | goto out; | |
f5ac2b9e BZ |
295 | |
296 | /* right shift 3 bits to get the event id */ | |
297 | event >>= 3; | |
727c26ed PO |
298 | } else { |
299 | if (size < 4) { | |
300 | lbs_deb_sdio("event packet too small (%d bytes)\n", | |
301 | (int)size); | |
302 | ret = -EINVAL; | |
303 | goto out; | |
304 | } | |
305 | event = buffer[3] << 24; | |
306 | event |= buffer[2] << 16; | |
307 | event |= buffer[1] << 8; | |
308 | event |= buffer[0] << 0; | |
727c26ed PO |
309 | } |
310 | ||
7919b89c | 311 | lbs_queue_event(card->priv, event & 0xFF); |
727c26ed PO |
312 | ret = 0; |
313 | ||
314 | out: | |
315 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
316 | ||
317 | return ret; | |
318 | } | |
319 | ||
96021f09 DW |
320 | static int if_sdio_wait_status(struct if_sdio_card *card, const u8 condition) |
321 | { | |
322 | u8 status; | |
323 | unsigned long timeout; | |
324 | int ret = 0; | |
325 | ||
326 | timeout = jiffies + HZ; | |
327 | while (1) { | |
328 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
ca962557 DW |
329 | if (ret) |
330 | return ret; | |
331 | if ((status & condition) == condition) | |
96021f09 DW |
332 | break; |
333 | if (time_after(jiffies, timeout)) | |
334 | return -ETIMEDOUT; | |
335 | mdelay(1); | |
336 | } | |
337 | return ret; | |
338 | } | |
339 | ||
727c26ed PO |
340 | static int if_sdio_card_to_host(struct if_sdio_card *card) |
341 | { | |
342 | int ret; | |
727c26ed | 343 | u16 size, type, chunk; |
727c26ed PO |
344 | |
345 | lbs_deb_enter(LBS_DEB_SDIO); | |
346 | ||
b136a141 | 347 | size = if_sdio_read_rx_len(card, &ret); |
727c26ed PO |
348 | if (ret) |
349 | goto out; | |
350 | ||
351 | if (size < 4) { | |
352 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", | |
353 | (int)size); | |
354 | ret = -EINVAL; | |
355 | goto out; | |
356 | } | |
357 | ||
96021f09 DW |
358 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); |
359 | if (ret) | |
360 | goto out; | |
727c26ed PO |
361 | |
362 | /* | |
363 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
364 | * goes suicidal. There's no way to guarantee that for all |
365 | * controllers, but we can at least try. | |
727c26ed | 366 | */ |
ad3868b2 | 367 | chunk = sdio_align_size(card->func, size); |
727c26ed PO |
368 | |
369 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); | |
370 | if (ret) | |
371 | goto out; | |
372 | ||
373 | chunk = card->buffer[0] | (card->buffer[1] << 8); | |
374 | type = card->buffer[2] | (card->buffer[3] << 8); | |
375 | ||
376 | lbs_deb_sdio("packet of type %d and size %d bytes\n", | |
377 | (int)type, (int)chunk); | |
378 | ||
379 | if (chunk > size) { | |
380 | lbs_deb_sdio("packet fragment (%d > %d)\n", | |
381 | (int)chunk, (int)size); | |
382 | ret = -EINVAL; | |
383 | goto out; | |
384 | } | |
385 | ||
386 | if (chunk < size) { | |
387 | lbs_deb_sdio("packet fragment (%d < %d)\n", | |
388 | (int)chunk, (int)size); | |
389 | } | |
390 | ||
391 | switch (type) { | |
392 | case MVMS_CMD: | |
393 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); | |
394 | if (ret) | |
395 | goto out; | |
396 | break; | |
397 | case MVMS_DAT: | |
398 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); | |
399 | if (ret) | |
400 | goto out; | |
401 | break; | |
402 | case MVMS_EVENT: | |
403 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); | |
404 | if (ret) | |
405 | goto out; | |
406 | break; | |
407 | default: | |
408 | lbs_deb_sdio("invalid type (%d) from firmware\n", | |
409 | (int)type); | |
410 | ret = -EINVAL; | |
411 | goto out; | |
412 | } | |
413 | ||
414 | out: | |
415 | if (ret) | |
416 | lbs_pr_err("problem fetching packet from firmware\n"); | |
417 | ||
418 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
423 | static void if_sdio_host_to_card_worker(struct work_struct *work) | |
424 | { | |
425 | struct if_sdio_card *card; | |
426 | struct if_sdio_packet *packet; | |
727c26ed PO |
427 | int ret; |
428 | unsigned long flags; | |
429 | ||
430 | lbs_deb_enter(LBS_DEB_SDIO); | |
431 | ||
432 | card = container_of(work, struct if_sdio_card, packet_worker); | |
433 | ||
434 | while (1) { | |
435 | spin_lock_irqsave(&card->lock, flags); | |
436 | packet = card->packets; | |
437 | if (packet) | |
438 | card->packets = packet->next; | |
439 | spin_unlock_irqrestore(&card->lock, flags); | |
440 | ||
441 | if (!packet) | |
442 | break; | |
443 | ||
444 | sdio_claim_host(card->func); | |
445 | ||
96021f09 DW |
446 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); |
447 | if (ret == 0) { | |
448 | ret = sdio_writesb(card->func, card->ioport, | |
449 | packet->buffer, packet->nb); | |
727c26ed PO |
450 | } |
451 | ||
727c26ed | 452 | if (ret) |
96021f09 DW |
453 | lbs_pr_err("error %d sending packet to firmware\n", ret); |
454 | ||
727c26ed PO |
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 | ||
96021f09 DW |
467 | #define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY) |
468 | ||
727c26ed PO |
469 | static int if_sdio_prog_helper(struct if_sdio_card *card) |
470 | { | |
471 | int ret; | |
727c26ed PO |
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) { | |
96021f09 DW |
503 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); |
504 | if (ret) | |
505 | goto release; | |
727c26ed | 506 | |
ac1a474d DW |
507 | /* On some platforms (like Davinci) the chip needs more time |
508 | * between helper blocks. | |
509 | */ | |
510 | mdelay(2); | |
727c26ed PO |
511 | |
512 | chunk_size = min(size, (size_t)60); | |
513 | ||
c2df2efe | 514 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); |
727c26ed PO |
515 | memcpy(chunk_buffer + 4, firmware, chunk_size); |
516 | /* | |
517 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); | |
518 | */ | |
519 | ret = sdio_writesb(card->func, card->ioport, | |
520 | chunk_buffer, 64); | |
521 | if (ret) | |
522 | goto release; | |
523 | ||
524 | firmware += chunk_size; | |
525 | size -= chunk_size; | |
526 | } | |
527 | ||
528 | /* an empty block marks the end of the transfer */ | |
529 | memset(chunk_buffer, 0, 4); | |
530 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); | |
531 | if (ret) | |
532 | goto release; | |
533 | ||
534 | lbs_deb_sdio("waiting for helper to boot...\n"); | |
535 | ||
536 | /* wait for the helper to boot by looking at the size register */ | |
537 | timeout = jiffies + HZ; | |
538 | while (1) { | |
539 | u16 req_size; | |
540 | ||
541 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
542 | if (ret) | |
543 | goto release; | |
544 | ||
545 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
546 | if (ret) | |
547 | goto release; | |
548 | ||
549 | if (req_size != 0) | |
550 | break; | |
551 | ||
552 | if (time_after(jiffies, timeout)) { | |
553 | ret = -ETIMEDOUT; | |
554 | goto release; | |
555 | } | |
556 | ||
557 | msleep(10); | |
558 | } | |
559 | ||
560 | ret = 0; | |
561 | ||
562 | release: | |
727c26ed PO |
563 | sdio_release_host(card->func); |
564 | kfree(chunk_buffer); | |
565 | release_fw: | |
566 | release_firmware(fw); | |
567 | ||
568 | out: | |
569 | if (ret) | |
570 | lbs_pr_err("failed to load helper firmware\n"); | |
571 | ||
572 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
573 | ||
574 | return ret; | |
575 | } | |
576 | ||
577 | static int if_sdio_prog_real(struct if_sdio_card *card) | |
578 | { | |
579 | int ret; | |
727c26ed PO |
580 | const struct firmware *fw; |
581 | unsigned long timeout; | |
582 | u8 *chunk_buffer; | |
583 | u32 chunk_size; | |
6dfff895 | 584 | const u8 *firmware; |
727c26ed PO |
585 | size_t size, req_size; |
586 | ||
587 | lbs_deb_enter(LBS_DEB_SDIO); | |
588 | ||
589 | ret = request_firmware(&fw, card->firmware, &card->func->dev); | |
590 | if (ret) { | |
591 | lbs_pr_err("can't load firmware\n"); | |
592 | goto out; | |
593 | } | |
594 | ||
595 | chunk_buffer = kzalloc(512, GFP_KERNEL); | |
596 | if (!chunk_buffer) { | |
597 | ret = -ENOMEM; | |
598 | goto release_fw; | |
599 | } | |
600 | ||
601 | sdio_claim_host(card->func); | |
602 | ||
603 | ret = sdio_set_block_size(card->func, 32); | |
604 | if (ret) | |
605 | goto release; | |
606 | ||
607 | firmware = fw->data; | |
608 | size = fw->size; | |
609 | ||
610 | while (size) { | |
96021f09 DW |
611 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); |
612 | if (ret) | |
613 | goto release; | |
727c26ed PO |
614 | |
615 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
616 | if (ret) | |
617 | goto release; | |
618 | ||
619 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
620 | if (ret) | |
621 | goto release; | |
622 | /* | |
623 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
624 | */ | |
625 | if (req_size == 0) { | |
626 | lbs_deb_sdio("firmware helper gave up early\n"); | |
627 | ret = -EIO; | |
628 | goto release; | |
629 | } | |
630 | ||
631 | if (req_size & 0x01) { | |
632 | lbs_deb_sdio("firmware helper signalled error\n"); | |
633 | ret = -EIO; | |
634 | goto release; | |
635 | } | |
636 | ||
637 | if (req_size > size) | |
638 | req_size = size; | |
639 | ||
640 | while (req_size) { | |
641 | chunk_size = min(req_size, (size_t)512); | |
642 | ||
643 | memcpy(chunk_buffer, firmware, chunk_size); | |
644 | /* | |
645 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
646 | chunk_size, (chunk_size + 31) / 32 * 32); | |
647 | */ | |
648 | ret = sdio_writesb(card->func, card->ioport, | |
23827926 | 649 | chunk_buffer, roundup(chunk_size, 32)); |
727c26ed PO |
650 | if (ret) |
651 | goto release; | |
652 | ||
653 | firmware += chunk_size; | |
654 | size -= chunk_size; | |
655 | req_size -= chunk_size; | |
656 | } | |
657 | } | |
658 | ||
659 | ret = 0; | |
660 | ||
661 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
662 | ||
663 | /* wait for the firmware to boot */ | |
664 | timeout = jiffies + HZ; | |
665 | while (1) { | |
666 | u16 scratch; | |
667 | ||
668 | scratch = if_sdio_read_scratch(card, &ret); | |
669 | if (ret) | |
670 | goto release; | |
671 | ||
672 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
673 | break; | |
674 | ||
675 | if (time_after(jiffies, timeout)) { | |
676 | ret = -ETIMEDOUT; | |
677 | goto release; | |
678 | } | |
679 | ||
680 | msleep(10); | |
681 | } | |
682 | ||
683 | ret = 0; | |
684 | ||
685 | release: | |
727c26ed PO |
686 | sdio_release_host(card->func); |
687 | kfree(chunk_buffer); | |
688 | release_fw: | |
689 | release_firmware(fw); | |
690 | ||
691 | out: | |
692 | if (ret) | |
693 | lbs_pr_err("failed to load firmware\n"); | |
694 | ||
695 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
696 | ||
697 | return ret; | |
698 | } | |
699 | ||
700 | static int if_sdio_prog_firmware(struct if_sdio_card *card) | |
701 | { | |
702 | int ret; | |
703 | u16 scratch; | |
704 | ||
705 | lbs_deb_enter(LBS_DEB_SDIO); | |
706 | ||
707 | sdio_claim_host(card->func); | |
708 | scratch = if_sdio_read_scratch(card, &ret); | |
709 | sdio_release_host(card->func); | |
710 | ||
711 | if (ret) | |
712 | goto out; | |
713 | ||
2c7e5798 BZ |
714 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
715 | ||
727c26ed PO |
716 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
717 | lbs_deb_sdio("firmware already loaded\n"); | |
718 | goto success; | |
719 | } | |
720 | ||
721 | ret = if_sdio_prog_helper(card); | |
722 | if (ret) | |
723 | goto out; | |
724 | ||
725 | ret = if_sdio_prog_real(card); | |
726 | if (ret) | |
727 | goto out; | |
728 | ||
729 | success: | |
d26285f8 BZ |
730 | sdio_claim_host(card->func); |
731 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); | |
732 | sdio_release_host(card->func); | |
727c26ed PO |
733 | ret = 0; |
734 | ||
735 | out: | |
736 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
737 | ||
738 | return ret; | |
739 | } | |
740 | ||
741 | /*******************************************************************/ | |
742 | /* Libertas callbacks */ | |
743 | /*******************************************************************/ | |
744 | ||
69f9032d HS |
745 | static int if_sdio_host_to_card(struct lbs_private *priv, |
746 | u8 type, u8 *buf, u16 nb) | |
727c26ed PO |
747 | { |
748 | int ret; | |
749 | struct if_sdio_card *card; | |
750 | struct if_sdio_packet *packet, *cur; | |
751 | u16 size; | |
752 | unsigned long flags; | |
753 | ||
754 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); | |
755 | ||
756 | card = priv->card; | |
757 | ||
758 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { | |
759 | ret = -EINVAL; | |
760 | goto out; | |
761 | } | |
762 | ||
763 | /* | |
764 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
765 | * goes suicidal. There's no way to guarantee that for all |
766 | * controllers, but we can at least try. | |
727c26ed | 767 | */ |
ad3868b2 | 768 | size = sdio_align_size(card->func, nb + 4); |
727c26ed PO |
769 | |
770 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, | |
771 | GFP_ATOMIC); | |
772 | if (!packet) { | |
773 | ret = -ENOMEM; | |
774 | goto out; | |
775 | } | |
776 | ||
777 | packet->next = NULL; | |
778 | packet->nb = size; | |
779 | ||
780 | /* | |
781 | * SDIO specific header. | |
782 | */ | |
783 | packet->buffer[0] = (nb + 4) & 0xff; | |
784 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; | |
785 | packet->buffer[2] = type; | |
786 | packet->buffer[3] = 0; | |
787 | ||
788 | memcpy(packet->buffer + 4, buf, nb); | |
789 | ||
790 | spin_lock_irqsave(&card->lock, flags); | |
791 | ||
792 | if (!card->packets) | |
793 | card->packets = packet; | |
794 | else { | |
795 | cur = card->packets; | |
796 | while (cur->next) | |
797 | cur = cur->next; | |
798 | cur->next = packet; | |
799 | } | |
800 | ||
801 | switch (type) { | |
802 | case MVMS_CMD: | |
803 | priv->dnld_sent = DNLD_CMD_SENT; | |
804 | break; | |
805 | case MVMS_DAT: | |
806 | priv->dnld_sent = DNLD_DATA_SENT; | |
807 | break; | |
808 | default: | |
809 | lbs_deb_sdio("unknown packet type %d\n", (int)type); | |
810 | } | |
811 | ||
812 | spin_unlock_irqrestore(&card->lock, flags); | |
813 | ||
9b02f419 | 814 | queue_work(card->workqueue, &card->packet_worker); |
727c26ed PO |
815 | |
816 | ret = 0; | |
817 | ||
818 | out: | |
819 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
820 | ||
821 | return ret; | |
822 | } | |
823 | ||
49125454 AK |
824 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
825 | { | |
826 | int ret = -1; | |
827 | struct cmd_header cmd; | |
828 | ||
829 | memset(&cmd, 0, sizeof(cmd)); | |
830 | ||
831 | lbs_deb_sdio("send DEEP_SLEEP command\n"); | |
832 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), | |
833 | lbs_cmd_copyback, (unsigned long) &cmd); | |
834 | if (ret) | |
835 | lbs_pr_err("DEEP_SLEEP cmd failed\n"); | |
836 | ||
837 | mdelay(200); | |
838 | return ret; | |
839 | } | |
840 | ||
841 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) | |
842 | { | |
843 | struct if_sdio_card *card = priv->card; | |
844 | int ret = -1; | |
845 | ||
846 | lbs_deb_enter(LBS_DEB_SDIO); | |
847 | sdio_claim_host(card->func); | |
848 | ||
849 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); | |
850 | if (ret) | |
851 | lbs_pr_err("sdio_writeb failed!\n"); | |
852 | ||
853 | sdio_release_host(card->func); | |
854 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
855 | return ret; | |
856 | } | |
857 | ||
858 | static int if_sdio_reset_deep_sleep_wakeup(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, 0, 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 | ||
727c26ed PO |
876 | /*******************************************************************/ |
877 | /* SDIO callbacks */ | |
878 | /*******************************************************************/ | |
879 | ||
880 | static void if_sdio_interrupt(struct sdio_func *func) | |
881 | { | |
882 | int ret; | |
883 | struct if_sdio_card *card; | |
884 | u8 cause; | |
885 | ||
886 | lbs_deb_enter(LBS_DEB_SDIO); | |
887 | ||
888 | card = sdio_get_drvdata(func); | |
889 | ||
890 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); | |
891 | if (ret) | |
892 | goto out; | |
893 | ||
894 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); | |
895 | ||
896 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); | |
897 | if (ret) | |
898 | goto out; | |
899 | ||
900 | /* | |
901 | * Ignore the define name, this really means the card has | |
902 | * successfully received the command. | |
903 | */ | |
49125454 | 904 | card->priv->is_activity_detected = 1; |
e775ed7c DW |
905 | if (cause & IF_SDIO_H_INT_DNLD) |
906 | lbs_host_to_card_done(card->priv); | |
907 | ||
727c26ed PO |
908 | |
909 | if (cause & IF_SDIO_H_INT_UPLD) { | |
910 | ret = if_sdio_card_to_host(card); | |
911 | if (ret) | |
912 | goto out; | |
913 | } | |
914 | ||
915 | ret = 0; | |
916 | ||
917 | out: | |
918 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
919 | } | |
920 | ||
921 | static int if_sdio_probe(struct sdio_func *func, | |
922 | const struct sdio_device_id *id) | |
923 | { | |
924 | struct if_sdio_card *card; | |
69f9032d | 925 | struct lbs_private *priv; |
727c26ed PO |
926 | int ret, i; |
927 | unsigned int model; | |
928 | struct if_sdio_packet *packet; | |
8a64c0f6 | 929 | struct mmc_host *host = func->card->host; |
727c26ed PO |
930 | |
931 | lbs_deb_enter(LBS_DEB_SDIO); | |
932 | ||
933 | for (i = 0;i < func->card->num_info;i++) { | |
934 | if (sscanf(func->card->info[i], | |
935 | "802.11 SDIO ID: %x", &model) == 1) | |
936 | break; | |
937 | if (sscanf(func->card->info[i], | |
938 | "ID: %x", &model) == 1) | |
939 | break; | |
e70a5ac5 BZ |
940 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
941 | model = IF_SDIO_MODEL_8385; | |
942 | break; | |
943 | } | |
727c26ed PO |
944 | } |
945 | ||
946 | if (i == func->card->num_info) { | |
947 | lbs_pr_err("unable to identify card model\n"); | |
948 | return -ENODEV; | |
949 | } | |
950 | ||
951 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
952 | if (!card) | |
953 | return -ENOMEM; | |
954 | ||
955 | card->func = func; | |
956 | card->model = model; | |
2c7e5798 BZ |
957 | |
958 | switch (card->model) { | |
959 | case IF_SDIO_MODEL_8385: | |
960 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; | |
961 | break; | |
962 | case IF_SDIO_MODEL_8686: | |
963 | card->scratch_reg = IF_SDIO_SCRATCH; | |
964 | break; | |
965 | case IF_SDIO_MODEL_8688: | |
966 | default: /* for newer chipsets */ | |
967 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
968 | break; | |
969 | } | |
970 | ||
727c26ed | 971 | spin_lock_init(&card->lock); |
9b02f419 | 972 | card->workqueue = create_workqueue("libertas_sdio"); |
727c26ed PO |
973 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
974 | ||
975 | for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) { | |
976 | if (card->model == if_sdio_models[i].model) | |
977 | break; | |
978 | } | |
979 | ||
980 | if (i == ARRAY_SIZE(if_sdio_models)) { | |
af901ca1 | 981 | lbs_pr_err("unknown card model 0x%x\n", card->model); |
727c26ed PO |
982 | ret = -ENODEV; |
983 | goto free; | |
984 | } | |
985 | ||
986 | card->helper = if_sdio_models[i].helper; | |
987 | card->firmware = if_sdio_models[i].firmware; | |
988 | ||
886275ce | 989 | kparam_block_sysfs_write(helper_name); |
10078321 | 990 | if (lbs_helper_name) { |
886275ce RR |
991 | char *helper = kstrdup(lbs_helper_name, GFP_KERNEL); |
992 | if (!helper) { | |
993 | kparam_unblock_sysfs_write(helper_name); | |
994 | ret = -ENOMEM; | |
995 | goto free; | |
996 | } | |
727c26ed | 997 | lbs_deb_sdio("overriding helper firmware: %s\n", |
10078321 | 998 | lbs_helper_name); |
886275ce RR |
999 | card->helper = helper; |
1000 | card->helper_allocated = true; | |
727c26ed | 1001 | } |
886275ce | 1002 | kparam_unblock_sysfs_write(helper_name); |
727c26ed | 1003 | |
886275ce | 1004 | kparam_block_sysfs_write(fw_name); |
10078321 | 1005 | if (lbs_fw_name) { |
886275ce RR |
1006 | char *fw_name = kstrdup(lbs_fw_name, GFP_KERNEL); |
1007 | if (!fw_name) { | |
1008 | kparam_unblock_sysfs_write(fw_name); | |
1009 | ret = -ENOMEM; | |
1010 | goto free; | |
1011 | } | |
10078321 | 1012 | lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name); |
886275ce RR |
1013 | card->firmware = fw_name; |
1014 | card->firmware_allocated = true; | |
727c26ed | 1015 | } |
886275ce | 1016 | kparam_unblock_sysfs_write(fw_name); |
727c26ed PO |
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 | ||
886275ce RR |
1150 | if (card->helper_allocated) |
1151 | kfree(card->helper); | |
1152 | if (card->firmware_allocated) | |
1153 | kfree(card->firmware); | |
727c26ed PO |
1154 | kfree(card); |
1155 | ||
1156 | goto out; | |
1157 | } | |
1158 | ||
1159 | static void if_sdio_remove(struct sdio_func *func) | |
1160 | { | |
1161 | struct if_sdio_card *card; | |
1162 | struct if_sdio_packet *packet; | |
1163 | ||
1164 | lbs_deb_enter(LBS_DEB_SDIO); | |
1165 | ||
1166 | card = sdio_get_drvdata(func); | |
1167 | ||
6bc61f4d BZ |
1168 | if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) { |
1169 | /* | |
1170 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1171 | * multiple functions | |
1172 | */ | |
1173 | struct cmd_header cmd; | |
1174 | ||
1175 | memset(&cmd, 0, sizeof(cmd)); | |
1176 | ||
1177 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1178 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1179 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1180 | (unsigned long) &cmd)) | |
1181 | lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); | |
1182 | } | |
d26285f8 | 1183 | |
727c26ed PO |
1184 | |
1185 | lbs_deb_sdio("call remove card\n"); | |
6bc61f4d | 1186 | lbs_stop_card(card->priv); |
10078321 | 1187 | lbs_remove_card(card->priv); |
23b149c1 | 1188 | card->priv->surpriseremoved = 1; |
727c26ed | 1189 | |
9b02f419 DW |
1190 | flush_workqueue(card->workqueue); |
1191 | destroy_workqueue(card->workqueue); | |
727c26ed PO |
1192 | |
1193 | sdio_claim_host(func); | |
1194 | sdio_release_irq(func); | |
1195 | sdio_disable_func(func); | |
1196 | sdio_release_host(func); | |
1197 | ||
1198 | while (card->packets) { | |
1199 | packet = card->packets; | |
1200 | card->packets = card->packets->next; | |
1201 | kfree(packet); | |
1202 | } | |
1203 | ||
886275ce RR |
1204 | if (card->helper_allocated) |
1205 | kfree(card->helper); | |
1206 | if (card->firmware_allocated) | |
1207 | kfree(card->firmware); | |
727c26ed PO |
1208 | kfree(card); |
1209 | ||
1210 | lbs_deb_leave(LBS_DEB_SDIO); | |
1211 | } | |
1212 | ||
66fceb69 AK |
1213 | static int if_sdio_suspend(struct device *dev) |
1214 | { | |
1215 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1216 | int ret; | |
1217 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1218 | ||
1219 | mmc_pm_flag_t flags = sdio_get_host_pm_caps(func); | |
1220 | ||
1221 | lbs_pr_info("%s: suspend: PM flags = 0x%x\n", | |
1222 | sdio_func_id(func), flags); | |
1223 | ||
1224 | /* If we aren't being asked to wake on anything, we should bail out | |
1225 | * and let the SD stack power down the card. | |
1226 | */ | |
1227 | if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) { | |
1228 | lbs_pr_info("Suspend without wake params -- " | |
1229 | "powering down card."); | |
1230 | return -ENOSYS; | |
1231 | } | |
1232 | ||
1233 | if (!(flags & MMC_PM_KEEP_POWER)) { | |
1234 | lbs_pr_err("%s: cannot remain alive while host is suspended\n", | |
1235 | sdio_func_id(func)); | |
1236 | return -ENOSYS; | |
1237 | } | |
1238 | ||
1239 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
1240 | if (ret) | |
1241 | return ret; | |
1242 | ||
1243 | ret = lbs_suspend(card->priv); | |
1244 | if (ret) | |
1245 | return ret; | |
1246 | ||
1247 | return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); | |
1248 | } | |
1249 | ||
1250 | static int if_sdio_resume(struct device *dev) | |
1251 | { | |
1252 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1253 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1254 | int ret; | |
1255 | ||
1256 | lbs_pr_info("%s: resume: we're back\n", sdio_func_id(func)); | |
1257 | ||
1258 | ret = lbs_resume(card->priv); | |
1259 | ||
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | static const struct dev_pm_ops if_sdio_pm_ops = { | |
1264 | .suspend = if_sdio_suspend, | |
1265 | .resume = if_sdio_resume, | |
1266 | }; | |
1267 | ||
727c26ed PO |
1268 | static struct sdio_driver if_sdio_driver = { |
1269 | .name = "libertas_sdio", | |
1270 | .id_table = if_sdio_ids, | |
1271 | .probe = if_sdio_probe, | |
1272 | .remove = if_sdio_remove, | |
66fceb69 AK |
1273 | .drv = { |
1274 | .pm = &if_sdio_pm_ops, | |
1275 | }, | |
727c26ed PO |
1276 | }; |
1277 | ||
1278 | /*******************************************************************/ | |
1279 | /* Module functions */ | |
1280 | /*******************************************************************/ | |
1281 | ||
4fb910fd | 1282 | static int __init if_sdio_init_module(void) |
727c26ed PO |
1283 | { |
1284 | int ret = 0; | |
1285 | ||
1286 | lbs_deb_enter(LBS_DEB_SDIO); | |
1287 | ||
1288 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1289 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1290 | ||
1291 | ret = sdio_register_driver(&if_sdio_driver); | |
1292 | ||
6bc61f4d BZ |
1293 | /* Clear the flag in case user removes the card. */ |
1294 | user_rmmod = 0; | |
1295 | ||
727c26ed PO |
1296 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
1297 | ||
1298 | return ret; | |
1299 | } | |
1300 | ||
4fb910fd | 1301 | static void __exit if_sdio_exit_module(void) |
727c26ed PO |
1302 | { |
1303 | lbs_deb_enter(LBS_DEB_SDIO); | |
1304 | ||
6bc61f4d BZ |
1305 | /* Set the flag as user is removing this module. */ |
1306 | user_rmmod = 1; | |
d26285f8 | 1307 | |
727c26ed PO |
1308 | sdio_unregister_driver(&if_sdio_driver); |
1309 | ||
1310 | lbs_deb_leave(LBS_DEB_SDIO); | |
1311 | } | |
1312 | ||
1313 | module_init(if_sdio_init_module); | |
1314 | module_exit(if_sdio_exit_module); | |
1315 | ||
1316 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1317 | MODULE_AUTHOR("Pierre Ossman"); | |
1318 | MODULE_LICENSE("GPL"); |