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 | ||
0e4e06ae JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
23827926 | 31 | #include <linux/kernel.h> |
ac5c24e9 | 32 | #include <linux/module.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
727c26ed PO |
34 | #include <linux/firmware.h> |
35 | #include <linux/netdevice.h> | |
36 | #include <linux/delay.h> | |
37 | #include <linux/mmc/card.h> | |
38 | #include <linux/mmc/sdio_func.h> | |
39 | #include <linux/mmc/sdio_ids.h> | |
8a64c0f6 DM |
40 | #include <linux/mmc/sdio.h> |
41 | #include <linux/mmc/host.h> | |
7e1f79a1 | 42 | #include <linux/pm_runtime.h> |
727c26ed PO |
43 | |
44 | #include "host.h" | |
45 | #include "decl.h" | |
46 | #include "defs.h" | |
47 | #include "dev.h" | |
6bc61f4d | 48 | #include "cmd.h" |
727c26ed PO |
49 | #include "if_sdio.h" |
50 | ||
7e1f79a1 DD |
51 | static void if_sdio_interrupt(struct sdio_func *func); |
52 | ||
6bc61f4d BZ |
53 | /* The if_sdio_remove() callback function is called when |
54 | * user removes this module from kernel space or ejects | |
55 | * the card from the slot. The driver handles these 2 cases | |
56 | * differently for SD8688 combo chip. | |
57 | * If the user is removing the module, the FUNC_SHUTDOWN | |
58 | * command for SD8688 is sent to the firmware. | |
59 | * If the card is removed, there is no need to send this command. | |
60 | * | |
61 | * The variable 'user_rmmod' is used to distinguish these two | |
62 | * scenarios. This flag is initialized as FALSE in case the card | |
63 | * is removed, and will be set to TRUE for module removal when | |
64 | * module_exit function is called. | |
65 | */ | |
66 | static u8 user_rmmod; | |
67 | ||
727c26ed | 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 | ||
3d32a58b DW |
78 | #define MODEL_8385 0x04 |
79 | #define MODEL_8686 0x0b | |
80 | #define MODEL_8688 0x10 | |
81 | ||
82 | static const struct lbs_fw_table fw_table[] = { | |
83 | { MODEL_8385, "libertas/sd8385_helper.bin", "libertas/sd8385.bin" }, | |
84 | { MODEL_8385, "sd8385_helper.bin", "sd8385.bin" }, | |
85 | { MODEL_8686, "libertas/sd8686_v9_helper.bin", "libertas/sd8686_v9.bin" }, | |
86 | { MODEL_8686, "libertas/sd8686_v8_helper.bin", "libertas/sd8686_v8.bin" }, | |
87 | { MODEL_8686, "sd8686_helper.bin", "sd8686.bin" }, | |
88 | { MODEL_8688, "libertas/sd8688_helper.bin", "libertas/sd8688.bin" }, | |
89 | { MODEL_8688, "sd8688_helper.bin", "sd8688.bin" }, | |
90 | { 0, NULL, NULL } | |
727c26ed | 91 | }; |
3d32a58b DW |
92 | MODULE_FIRMWARE("libertas/sd8385_helper.bin"); |
93 | MODULE_FIRMWARE("libertas/sd8385.bin"); | |
a974a4bb BH |
94 | MODULE_FIRMWARE("sd8385_helper.bin"); |
95 | MODULE_FIRMWARE("sd8385.bin"); | |
3d32a58b DW |
96 | MODULE_FIRMWARE("libertas/sd8686_v9_helper.bin"); |
97 | MODULE_FIRMWARE("libertas/sd8686_v9.bin"); | |
98 | MODULE_FIRMWARE("libertas/sd8686_v8_helper.bin"); | |
99 | MODULE_FIRMWARE("libertas/sd8686_v8.bin"); | |
a974a4bb BH |
100 | MODULE_FIRMWARE("sd8686_helper.bin"); |
101 | MODULE_FIRMWARE("sd8686.bin"); | |
3d32a58b DW |
102 | MODULE_FIRMWARE("libertas/sd8688_helper.bin"); |
103 | MODULE_FIRMWARE("libertas/sd8688.bin"); | |
a974a4bb BH |
104 | MODULE_FIRMWARE("sd8688_helper.bin"); |
105 | MODULE_FIRMWARE("sd8688.bin"); | |
727c26ed PO |
106 | |
107 | struct if_sdio_packet { | |
108 | struct if_sdio_packet *next; | |
109 | u16 nb; | |
110 | u8 buffer[0] __attribute__((aligned(4))); | |
111 | }; | |
112 | ||
113 | struct if_sdio_card { | |
114 | struct sdio_func *func; | |
69f9032d | 115 | struct lbs_private *priv; |
727c26ed PO |
116 | |
117 | int model; | |
118 | unsigned long ioport; | |
2c7e5798 | 119 | unsigned int scratch_reg; |
66d647ef DD |
120 | bool started; |
121 | wait_queue_head_t pwron_waitq; | |
727c26ed | 122 | |
557de5eb | 123 | u8 buffer[65536] __attribute__((aligned(4))); |
727c26ed PO |
124 | |
125 | spinlock_t lock; | |
126 | struct if_sdio_packet *packets; | |
9b02f419 DW |
127 | |
128 | struct workqueue_struct *workqueue; | |
727c26ed | 129 | struct work_struct packet_worker; |
b136a141 BZ |
130 | |
131 | u8 rx_unit; | |
727c26ed PO |
132 | }; |
133 | ||
66d647ef DD |
134 | static void if_sdio_finish_power_on(struct if_sdio_card *card); |
135 | static int if_sdio_power_off(struct if_sdio_card *card); | |
136 | ||
727c26ed PO |
137 | /********************************************************************/ |
138 | /* I/O */ | |
139 | /********************************************************************/ | |
140 | ||
2c7e5798 BZ |
141 | /* |
142 | * For SD8385/SD8686, this function reads firmware status after | |
143 | * the image is downloaded, or reads RX packet length when | |
144 | * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received. | |
145 | * For SD8688, this function reads firmware status only. | |
146 | */ | |
727c26ed PO |
147 | static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) |
148 | { | |
2c7e5798 | 149 | int ret; |
727c26ed PO |
150 | u16 scratch; |
151 | ||
2c7e5798 | 152 | scratch = sdio_readb(card->func, card->scratch_reg, &ret); |
727c26ed | 153 | if (!ret) |
2c7e5798 BZ |
154 | scratch |= sdio_readb(card->func, card->scratch_reg + 1, |
155 | &ret) << 8; | |
727c26ed PO |
156 | |
157 | if (err) | |
158 | *err = ret; | |
159 | ||
160 | if (ret) | |
161 | return 0xffff; | |
162 | ||
163 | return scratch; | |
164 | } | |
165 | ||
b136a141 BZ |
166 | static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) |
167 | { | |
168 | int ret; | |
169 | u8 rx_unit; | |
170 | ||
171 | rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); | |
172 | ||
173 | if (ret) | |
174 | rx_unit = 0; | |
175 | ||
176 | return rx_unit; | |
177 | } | |
178 | ||
179 | static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) | |
180 | { | |
181 | int ret; | |
182 | u16 rx_len; | |
183 | ||
184 | switch (card->model) { | |
3d32a58b DW |
185 | case MODEL_8385: |
186 | case MODEL_8686: | |
b136a141 BZ |
187 | rx_len = if_sdio_read_scratch(card, &ret); |
188 | break; | |
3d32a58b | 189 | case MODEL_8688: |
b136a141 BZ |
190 | default: /* for newer chipsets */ |
191 | rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); | |
192 | if (!ret) | |
193 | rx_len <<= card->rx_unit; | |
194 | else | |
195 | rx_len = 0xffff; /* invalid length */ | |
196 | ||
197 | break; | |
198 | } | |
199 | ||
200 | if (err) | |
201 | *err = ret; | |
202 | ||
203 | return rx_len; | |
204 | } | |
205 | ||
727c26ed PO |
206 | static int if_sdio_handle_cmd(struct if_sdio_card *card, |
207 | u8 *buffer, unsigned size) | |
208 | { | |
7919b89c | 209 | struct lbs_private *priv = card->priv; |
727c26ed PO |
210 | int ret; |
211 | unsigned long flags; | |
7919b89c | 212 | u8 i; |
727c26ed PO |
213 | |
214 | lbs_deb_enter(LBS_DEB_SDIO); | |
215 | ||
ddac4526 | 216 | if (size > LBS_CMD_BUFFER_SIZE) { |
727c26ed PO |
217 | lbs_deb_sdio("response packet too large (%d bytes)\n", |
218 | (int)size); | |
219 | ret = -E2BIG; | |
220 | goto out; | |
221 | } | |
222 | ||
7919b89c | 223 | spin_lock_irqsave(&priv->driver_lock, flags); |
727c26ed | 224 | |
7919b89c HS |
225 | i = (priv->resp_idx == 0) ? 1 : 0; |
226 | BUG_ON(priv->resp_len[i]); | |
227 | priv->resp_len[i] = size; | |
228 | memcpy(priv->resp_buf[i], buffer, size); | |
229 | lbs_notify_command_response(priv, i); | |
727c26ed | 230 | |
7919b89c | 231 | spin_unlock_irqrestore(&card->priv->driver_lock, flags); |
727c26ed PO |
232 | |
233 | ret = 0; | |
234 | ||
235 | out: | |
727c26ed | 236 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
237 | return ret; |
238 | } | |
239 | ||
240 | static int if_sdio_handle_data(struct if_sdio_card *card, | |
241 | u8 *buffer, unsigned size) | |
242 | { | |
243 | int ret; | |
244 | struct sk_buff *skb; | |
245 | char *data; | |
246 | ||
247 | lbs_deb_enter(LBS_DEB_SDIO); | |
248 | ||
249 | if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { | |
250 | lbs_deb_sdio("response packet too large (%d bytes)\n", | |
251 | (int)size); | |
252 | ret = -E2BIG; | |
253 | goto out; | |
254 | } | |
255 | ||
51e6b712 | 256 | skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN); |
727c26ed PO |
257 | if (!skb) { |
258 | ret = -ENOMEM; | |
259 | goto out; | |
260 | } | |
261 | ||
51e6b712 PO |
262 | skb_reserve(skb, NET_IP_ALIGN); |
263 | ||
727c26ed PO |
264 | data = skb_put(skb, size); |
265 | ||
266 | memcpy(data, buffer, size); | |
267 | ||
10078321 | 268 | lbs_process_rxed_packet(card->priv, skb); |
727c26ed PO |
269 | |
270 | ret = 0; | |
271 | ||
272 | out: | |
273 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
274 | ||
275 | return ret; | |
276 | } | |
277 | ||
278 | static int if_sdio_handle_event(struct if_sdio_card *card, | |
279 | u8 *buffer, unsigned size) | |
280 | { | |
281 | int ret; | |
727c26ed PO |
282 | u32 event; |
283 | ||
284 | lbs_deb_enter(LBS_DEB_SDIO); | |
285 | ||
3d32a58b | 286 | if (card->model == MODEL_8385) { |
727c26ed PO |
287 | event = sdio_readb(card->func, IF_SDIO_EVENT, &ret); |
288 | if (ret) | |
289 | goto out; | |
f5ac2b9e BZ |
290 | |
291 | /* right shift 3 bits to get the event id */ | |
292 | event >>= 3; | |
727c26ed PO |
293 | } else { |
294 | if (size < 4) { | |
295 | lbs_deb_sdio("event packet too small (%d bytes)\n", | |
296 | (int)size); | |
297 | ret = -EINVAL; | |
298 | goto out; | |
299 | } | |
300 | event = buffer[3] << 24; | |
301 | event |= buffer[2] << 16; | |
302 | event |= buffer[1] << 8; | |
303 | event |= buffer[0] << 0; | |
727c26ed PO |
304 | } |
305 | ||
7919b89c | 306 | lbs_queue_event(card->priv, event & 0xFF); |
727c26ed PO |
307 | ret = 0; |
308 | ||
309 | out: | |
310 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
311 | ||
312 | return ret; | |
313 | } | |
314 | ||
96021f09 DW |
315 | static int if_sdio_wait_status(struct if_sdio_card *card, const u8 condition) |
316 | { | |
317 | u8 status; | |
318 | unsigned long timeout; | |
319 | int ret = 0; | |
320 | ||
321 | timeout = jiffies + HZ; | |
322 | while (1) { | |
323 | status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); | |
ca962557 DW |
324 | if (ret) |
325 | return ret; | |
326 | if ((status & condition) == condition) | |
96021f09 DW |
327 | break; |
328 | if (time_after(jiffies, timeout)) | |
329 | return -ETIMEDOUT; | |
330 | mdelay(1); | |
331 | } | |
332 | return ret; | |
333 | } | |
334 | ||
727c26ed PO |
335 | static int if_sdio_card_to_host(struct if_sdio_card *card) |
336 | { | |
337 | int ret; | |
727c26ed | 338 | u16 size, type, chunk; |
727c26ed PO |
339 | |
340 | lbs_deb_enter(LBS_DEB_SDIO); | |
341 | ||
b136a141 | 342 | size = if_sdio_read_rx_len(card, &ret); |
727c26ed PO |
343 | if (ret) |
344 | goto out; | |
345 | ||
346 | if (size < 4) { | |
347 | lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n", | |
348 | (int)size); | |
349 | ret = -EINVAL; | |
350 | goto out; | |
351 | } | |
352 | ||
96021f09 DW |
353 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); |
354 | if (ret) | |
355 | goto out; | |
727c26ed PO |
356 | |
357 | /* | |
358 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
359 | * goes suicidal. There's no way to guarantee that for all |
360 | * controllers, but we can at least try. | |
727c26ed | 361 | */ |
ad3868b2 | 362 | chunk = sdio_align_size(card->func, size); |
727c26ed PO |
363 | |
364 | ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk); | |
365 | if (ret) | |
366 | goto out; | |
367 | ||
368 | chunk = card->buffer[0] | (card->buffer[1] << 8); | |
369 | type = card->buffer[2] | (card->buffer[3] << 8); | |
370 | ||
371 | lbs_deb_sdio("packet of type %d and size %d bytes\n", | |
372 | (int)type, (int)chunk); | |
373 | ||
374 | if (chunk > size) { | |
375 | lbs_deb_sdio("packet fragment (%d > %d)\n", | |
376 | (int)chunk, (int)size); | |
377 | ret = -EINVAL; | |
378 | goto out; | |
379 | } | |
380 | ||
381 | if (chunk < size) { | |
382 | lbs_deb_sdio("packet fragment (%d < %d)\n", | |
383 | (int)chunk, (int)size); | |
384 | } | |
385 | ||
386 | switch (type) { | |
387 | case MVMS_CMD: | |
388 | ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4); | |
389 | if (ret) | |
390 | goto out; | |
391 | break; | |
392 | case MVMS_DAT: | |
393 | ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4); | |
394 | if (ret) | |
395 | goto out; | |
396 | break; | |
397 | case MVMS_EVENT: | |
398 | ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4); | |
399 | if (ret) | |
400 | goto out; | |
401 | break; | |
402 | default: | |
403 | lbs_deb_sdio("invalid type (%d) from firmware\n", | |
404 | (int)type); | |
405 | ret = -EINVAL; | |
406 | goto out; | |
407 | } | |
408 | ||
409 | out: | |
410 | if (ret) | |
0e4e06ae | 411 | pr_err("problem fetching packet from firmware\n"); |
727c26ed PO |
412 | |
413 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
414 | ||
415 | return ret; | |
416 | } | |
417 | ||
418 | static void if_sdio_host_to_card_worker(struct work_struct *work) | |
419 | { | |
420 | struct if_sdio_card *card; | |
421 | struct if_sdio_packet *packet; | |
727c26ed PO |
422 | int ret; |
423 | unsigned long flags; | |
424 | ||
425 | lbs_deb_enter(LBS_DEB_SDIO); | |
426 | ||
427 | card = container_of(work, struct if_sdio_card, packet_worker); | |
428 | ||
429 | while (1) { | |
430 | spin_lock_irqsave(&card->lock, flags); | |
431 | packet = card->packets; | |
432 | if (packet) | |
433 | card->packets = packet->next; | |
434 | spin_unlock_irqrestore(&card->lock, flags); | |
435 | ||
436 | if (!packet) | |
437 | break; | |
438 | ||
439 | sdio_claim_host(card->func); | |
440 | ||
96021f09 DW |
441 | ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); |
442 | if (ret == 0) { | |
443 | ret = sdio_writesb(card->func, card->ioport, | |
444 | packet->buffer, packet->nb); | |
727c26ed PO |
445 | } |
446 | ||
727c26ed | 447 | if (ret) |
0e4e06ae | 448 | pr_err("error %d sending packet to firmware\n", ret); |
96021f09 | 449 | |
727c26ed PO |
450 | sdio_release_host(card->func); |
451 | ||
452 | kfree(packet); | |
453 | } | |
454 | ||
455 | lbs_deb_leave(LBS_DEB_SDIO); | |
456 | } | |
457 | ||
458 | /********************************************************************/ | |
459 | /* Firmware */ | |
460 | /********************************************************************/ | |
461 | ||
96021f09 DW |
462 | #define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY) |
463 | ||
3d32a58b DW |
464 | static int if_sdio_prog_helper(struct if_sdio_card *card, |
465 | const struct firmware *fw) | |
727c26ed PO |
466 | { |
467 | int ret; | |
727c26ed PO |
468 | unsigned long timeout; |
469 | u8 *chunk_buffer; | |
470 | u32 chunk_size; | |
6dfff895 | 471 | const u8 *firmware; |
727c26ed PO |
472 | size_t size; |
473 | ||
474 | lbs_deb_enter(LBS_DEB_SDIO); | |
475 | ||
727c26ed PO |
476 | chunk_buffer = kzalloc(64, GFP_KERNEL); |
477 | if (!chunk_buffer) { | |
478 | ret = -ENOMEM; | |
3d32a58b | 479 | goto out; |
727c26ed PO |
480 | } |
481 | ||
482 | sdio_claim_host(card->func); | |
483 | ||
484 | ret = sdio_set_block_size(card->func, 32); | |
485 | if (ret) | |
486 | goto release; | |
487 | ||
488 | firmware = fw->data; | |
489 | size = fw->size; | |
490 | ||
491 | while (size) { | |
96021f09 DW |
492 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); |
493 | if (ret) | |
494 | goto release; | |
727c26ed | 495 | |
ac1a474d DW |
496 | /* On some platforms (like Davinci) the chip needs more time |
497 | * between helper blocks. | |
498 | */ | |
499 | mdelay(2); | |
727c26ed PO |
500 | |
501 | chunk_size = min(size, (size_t)60); | |
502 | ||
c2df2efe | 503 | *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size); |
727c26ed PO |
504 | memcpy(chunk_buffer + 4, firmware, chunk_size); |
505 | /* | |
506 | lbs_deb_sdio("sending %d bytes chunk\n", chunk_size); | |
507 | */ | |
508 | ret = sdio_writesb(card->func, card->ioport, | |
509 | chunk_buffer, 64); | |
510 | if (ret) | |
511 | goto release; | |
512 | ||
513 | firmware += chunk_size; | |
514 | size -= chunk_size; | |
515 | } | |
516 | ||
517 | /* an empty block marks the end of the transfer */ | |
518 | memset(chunk_buffer, 0, 4); | |
519 | ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64); | |
520 | if (ret) | |
521 | goto release; | |
522 | ||
523 | lbs_deb_sdio("waiting for helper to boot...\n"); | |
524 | ||
525 | /* wait for the helper to boot by looking at the size register */ | |
526 | timeout = jiffies + HZ; | |
527 | while (1) { | |
528 | u16 req_size; | |
529 | ||
530 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
531 | if (ret) | |
532 | goto release; | |
533 | ||
534 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
535 | if (ret) | |
536 | goto release; | |
537 | ||
538 | if (req_size != 0) | |
539 | break; | |
540 | ||
541 | if (time_after(jiffies, timeout)) { | |
542 | ret = -ETIMEDOUT; | |
543 | goto release; | |
544 | } | |
545 | ||
546 | msleep(10); | |
547 | } | |
548 | ||
549 | ret = 0; | |
550 | ||
551 | release: | |
727c26ed PO |
552 | sdio_release_host(card->func); |
553 | kfree(chunk_buffer); | |
727c26ed PO |
554 | |
555 | out: | |
556 | if (ret) | |
0e4e06ae | 557 | pr_err("failed to load helper firmware\n"); |
727c26ed PO |
558 | |
559 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
727c26ed PO |
560 | return ret; |
561 | } | |
562 | ||
3d32a58b DW |
563 | static int if_sdio_prog_real(struct if_sdio_card *card, |
564 | const struct firmware *fw) | |
727c26ed PO |
565 | { |
566 | int ret; | |
727c26ed PO |
567 | unsigned long timeout; |
568 | u8 *chunk_buffer; | |
569 | u32 chunk_size; | |
6dfff895 | 570 | const u8 *firmware; |
727c26ed PO |
571 | size_t size, req_size; |
572 | ||
573 | lbs_deb_enter(LBS_DEB_SDIO); | |
574 | ||
727c26ed PO |
575 | chunk_buffer = kzalloc(512, GFP_KERNEL); |
576 | if (!chunk_buffer) { | |
577 | ret = -ENOMEM; | |
3d32a58b | 578 | goto out; |
727c26ed PO |
579 | } |
580 | ||
581 | sdio_claim_host(card->func); | |
582 | ||
583 | ret = sdio_set_block_size(card->func, 32); | |
584 | if (ret) | |
585 | goto release; | |
586 | ||
587 | firmware = fw->data; | |
588 | size = fw->size; | |
589 | ||
590 | while (size) { | |
96021f09 DW |
591 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); |
592 | if (ret) | |
593 | goto release; | |
727c26ed PO |
594 | |
595 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); | |
596 | if (ret) | |
597 | goto release; | |
598 | ||
599 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8; | |
600 | if (ret) | |
601 | goto release; | |
602 | /* | |
603 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
604 | */ | |
605 | if (req_size == 0) { | |
606 | lbs_deb_sdio("firmware helper gave up early\n"); | |
607 | ret = -EIO; | |
608 | goto release; | |
609 | } | |
610 | ||
611 | if (req_size & 0x01) { | |
612 | lbs_deb_sdio("firmware helper signalled error\n"); | |
613 | ret = -EIO; | |
614 | goto release; | |
615 | } | |
616 | ||
617 | if (req_size > size) | |
618 | req_size = size; | |
619 | ||
620 | while (req_size) { | |
621 | chunk_size = min(req_size, (size_t)512); | |
622 | ||
623 | memcpy(chunk_buffer, firmware, chunk_size); | |
624 | /* | |
625 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
626 | chunk_size, (chunk_size + 31) / 32 * 32); | |
627 | */ | |
628 | ret = sdio_writesb(card->func, card->ioport, | |
23827926 | 629 | chunk_buffer, roundup(chunk_size, 32)); |
727c26ed PO |
630 | if (ret) |
631 | goto release; | |
632 | ||
633 | firmware += chunk_size; | |
634 | size -= chunk_size; | |
635 | req_size -= chunk_size; | |
636 | } | |
637 | } | |
638 | ||
639 | ret = 0; | |
640 | ||
641 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
642 | ||
643 | /* wait for the firmware to boot */ | |
644 | timeout = jiffies + HZ; | |
645 | while (1) { | |
646 | u16 scratch; | |
647 | ||
648 | scratch = if_sdio_read_scratch(card, &ret); | |
649 | if (ret) | |
650 | goto release; | |
651 | ||
652 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
653 | break; | |
654 | ||
655 | if (time_after(jiffies, timeout)) { | |
656 | ret = -ETIMEDOUT; | |
657 | goto release; | |
658 | } | |
659 | ||
660 | msleep(10); | |
661 | } | |
662 | ||
663 | ret = 0; | |
664 | ||
665 | release: | |
727c26ed PO |
666 | sdio_release_host(card->func); |
667 | kfree(chunk_buffer); | |
727c26ed PO |
668 | |
669 | out: | |
670 | if (ret) | |
0e4e06ae | 671 | pr_err("failed to load firmware\n"); |
727c26ed PO |
672 | |
673 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
727c26ed PO |
674 | return ret; |
675 | } | |
676 | ||
66d647ef DD |
677 | static void if_sdio_do_prog_firmware(struct lbs_private *priv, int ret, |
678 | const struct firmware *helper, | |
679 | const struct firmware *mainfw) | |
680 | { | |
681 | struct if_sdio_card *card = priv->card; | |
682 | ||
683 | if (ret) { | |
684 | pr_err("failed to find firmware (%d)\n", ret); | |
685 | return; | |
686 | } | |
687 | ||
688 | ret = if_sdio_prog_helper(card, helper); | |
689 | if (ret) | |
690 | goto out; | |
691 | ||
692 | lbs_deb_sdio("Helper firmware loaded\n"); | |
693 | ||
694 | ret = if_sdio_prog_real(card, mainfw); | |
695 | if (ret) | |
696 | goto out; | |
697 | ||
698 | lbs_deb_sdio("Firmware loaded\n"); | |
699 | if_sdio_finish_power_on(card); | |
700 | ||
701 | out: | |
702 | release_firmware(helper); | |
703 | release_firmware(mainfw); | |
704 | } | |
705 | ||
727c26ed PO |
706 | static int if_sdio_prog_firmware(struct if_sdio_card *card) |
707 | { | |
708 | int ret; | |
709 | u16 scratch; | |
710 | ||
711 | lbs_deb_enter(LBS_DEB_SDIO); | |
712 | ||
731b2034 PF |
713 | /* |
714 | * Disable interrupts | |
715 | */ | |
716 | sdio_claim_host(card->func); | |
717 | sdio_writeb(card->func, 0x00, IF_SDIO_H_INT_MASK, &ret); | |
718 | sdio_release_host(card->func); | |
719 | ||
727c26ed PO |
720 | sdio_claim_host(card->func); |
721 | scratch = if_sdio_read_scratch(card, &ret); | |
722 | sdio_release_host(card->func); | |
723 | ||
731b2034 PF |
724 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
725 | lbs_deb_sdio("scratch ret = %d\n", ret); | |
726 | ||
727c26ed PO |
727 | if (ret) |
728 | goto out; | |
729 | ||
2c7e5798 | 730 | |
731b2034 PF |
731 | /* |
732 | * The manual clearly describes that FEDC is the right code to use | |
733 | * to detect firmware presence, but for SD8686 it is not that simple. | |
734 | * Scratch is also used to store the RX packet length, so we lose | |
735 | * the FEDC value early on. So we use a non-zero check in order | |
736 | * to validate firmware presence. | |
737 | * Additionally, the SD8686 in the Gumstix always has the high scratch | |
738 | * bit set, even when the firmware is not loaded. So we have to | |
739 | * exclude that from the test. | |
740 | */ | |
727c26ed PO |
741 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
742 | lbs_deb_sdio("firmware already loaded\n"); | |
66d647ef DD |
743 | if_sdio_finish_power_on(card); |
744 | return 0; | |
731b2034 PF |
745 | } else if ((card->model == MODEL_8686) && (scratch & 0x7fff)) { |
746 | lbs_deb_sdio("firmware may be running\n"); | |
66d647ef DD |
747 | if_sdio_finish_power_on(card); |
748 | return 0; | |
3d32a58b DW |
749 | } |
750 | ||
66d647ef DD |
751 | ret = lbs_get_firmware_async(card->priv, &card->func->dev, card->model, |
752 | fw_table, if_sdio_do_prog_firmware); | |
727c26ed PO |
753 | |
754 | out: | |
3d32a58b | 755 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
756 | return ret; |
757 | } | |
758 | ||
7e1f79a1 DD |
759 | /********************************************************************/ |
760 | /* Power management */ | |
761 | /********************************************************************/ | |
762 | ||
66d647ef DD |
763 | /* Finish power on sequence (after firmware is loaded) */ |
764 | static void if_sdio_finish_power_on(struct if_sdio_card *card) | |
7e1f79a1 DD |
765 | { |
766 | struct sdio_func *func = card->func; | |
767 | struct lbs_private *priv = card->priv; | |
7e1f79a1 DD |
768 | int ret; |
769 | ||
770 | sdio_claim_host(func); | |
66d647ef | 771 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); |
7e1f79a1 DD |
772 | |
773 | /* | |
774 | * Get rx_unit if the chip is SD8688 or newer. | |
775 | * SD8385 & SD8686 do not have rx_unit. | |
776 | */ | |
777 | if ((card->model != MODEL_8385) | |
778 | && (card->model != MODEL_8686)) | |
779 | card->rx_unit = if_sdio_read_rx_unit(card); | |
780 | else | |
781 | card->rx_unit = 0; | |
782 | ||
783 | /* | |
784 | * Set up the interrupt handler late. | |
785 | * | |
786 | * If we set it up earlier, the (buggy) hardware generates a spurious | |
787 | * interrupt, even before the interrupt has been enabled, with | |
788 | * CCCR_INTx = 0. | |
789 | * | |
790 | * We register the interrupt handler late so that we can handle any | |
791 | * spurious interrupts, and also to avoid generation of that known | |
792 | * spurious interrupt in the first place. | |
793 | */ | |
794 | ret = sdio_claim_irq(func, if_sdio_interrupt); | |
795 | if (ret) | |
66d647ef | 796 | goto release; |
7e1f79a1 DD |
797 | |
798 | /* | |
799 | * Enable interrupts now that everything is set up | |
800 | */ | |
801 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); | |
802 | if (ret) | |
803 | goto release_irq; | |
804 | ||
805 | sdio_release_host(func); | |
806 | ||
807 | /* | |
808 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions | |
809 | */ | |
810 | if (card->model == MODEL_8688) { | |
811 | struct cmd_header cmd; | |
812 | ||
813 | memset(&cmd, 0, sizeof(cmd)); | |
814 | ||
815 | lbs_deb_sdio("send function INIT command\n"); | |
816 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), | |
817 | lbs_cmd_copyback, (unsigned long) &cmd)) | |
818 | netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n"); | |
819 | } | |
820 | ||
821 | priv->fw_ready = 1; | |
66d647ef | 822 | wake_up(&card->pwron_waitq); |
7e1f79a1 | 823 | |
66d647ef DD |
824 | if (!card->started) { |
825 | ret = lbs_start_card(priv); | |
826 | if_sdio_power_off(card); | |
827 | if (ret == 0) { | |
828 | card->started = true; | |
829 | /* Tell PM core that we don't need the card to be | |
830 | * powered now */ | |
831 | pm_runtime_put_noidle(&func->dev); | |
832 | } | |
833 | } | |
834 | ||
835 | return; | |
7e1f79a1 DD |
836 | |
837 | release_irq: | |
838 | sdio_release_irq(func); | |
66d647ef DD |
839 | release: |
840 | sdio_release_host(func); | |
841 | } | |
842 | ||
843 | static int if_sdio_power_on(struct if_sdio_card *card) | |
844 | { | |
845 | struct sdio_func *func = card->func; | |
846 | struct mmc_host *host = func->card->host; | |
847 | int ret; | |
848 | ||
849 | sdio_claim_host(func); | |
850 | ||
851 | ret = sdio_enable_func(func); | |
852 | if (ret) | |
853 | goto release; | |
854 | ||
855 | /* For 1-bit transfers to the 8686 model, we need to enable the | |
856 | * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0 | |
857 | * bit to allow access to non-vendor registers. */ | |
858 | if ((card->model == MODEL_8686) && | |
859 | (host->caps & MMC_CAP_SDIO_IRQ) && | |
860 | (host->ios.bus_width == MMC_BUS_WIDTH_1)) { | |
861 | u8 reg; | |
862 | ||
863 | func->card->quirks |= MMC_QUIRK_LENIENT_FN0; | |
864 | reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret); | |
865 | if (ret) | |
866 | goto disable; | |
867 | ||
868 | reg |= SDIO_BUS_ECSI; | |
869 | sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret); | |
870 | if (ret) | |
871 | goto disable; | |
872 | } | |
873 | ||
874 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); | |
875 | if (ret) | |
876 | goto disable; | |
877 | ||
878 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; | |
879 | if (ret) | |
880 | goto disable; | |
881 | ||
882 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; | |
883 | if (ret) | |
884 | goto disable; | |
885 | ||
886 | sdio_release_host(func); | |
887 | ret = if_sdio_prog_firmware(card); | |
888 | if (ret) { | |
889 | sdio_disable_func(func); | |
890 | return ret; | |
891 | } | |
892 | ||
893 | return 0; | |
894 | ||
7e1f79a1 DD |
895 | disable: |
896 | sdio_disable_func(func); | |
897 | release: | |
898 | sdio_release_host(func); | |
899 | return ret; | |
900 | } | |
901 | ||
902 | static int if_sdio_power_off(struct if_sdio_card *card) | |
903 | { | |
904 | struct sdio_func *func = card->func; | |
905 | struct lbs_private *priv = card->priv; | |
906 | ||
907 | priv->fw_ready = 0; | |
908 | ||
909 | sdio_claim_host(func); | |
910 | sdio_release_irq(func); | |
911 | sdio_disable_func(func); | |
912 | sdio_release_host(func); | |
913 | return 0; | |
914 | } | |
915 | ||
916 | ||
727c26ed PO |
917 | /*******************************************************************/ |
918 | /* Libertas callbacks */ | |
919 | /*******************************************************************/ | |
920 | ||
69f9032d HS |
921 | static int if_sdio_host_to_card(struct lbs_private *priv, |
922 | u8 type, u8 *buf, u16 nb) | |
727c26ed PO |
923 | { |
924 | int ret; | |
925 | struct if_sdio_card *card; | |
926 | struct if_sdio_packet *packet, *cur; | |
927 | u16 size; | |
928 | unsigned long flags; | |
929 | ||
930 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); | |
931 | ||
932 | card = priv->card; | |
933 | ||
934 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { | |
935 | ret = -EINVAL; | |
936 | goto out; | |
937 | } | |
938 | ||
939 | /* | |
940 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
941 | * goes suicidal. There's no way to guarantee that for all |
942 | * controllers, but we can at least try. | |
727c26ed | 943 | */ |
ad3868b2 | 944 | size = sdio_align_size(card->func, nb + 4); |
727c26ed PO |
945 | |
946 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, | |
947 | GFP_ATOMIC); | |
948 | if (!packet) { | |
949 | ret = -ENOMEM; | |
950 | goto out; | |
951 | } | |
952 | ||
953 | packet->next = NULL; | |
954 | packet->nb = size; | |
955 | ||
956 | /* | |
957 | * SDIO specific header. | |
958 | */ | |
959 | packet->buffer[0] = (nb + 4) & 0xff; | |
960 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; | |
961 | packet->buffer[2] = type; | |
962 | packet->buffer[3] = 0; | |
963 | ||
964 | memcpy(packet->buffer + 4, buf, nb); | |
965 | ||
966 | spin_lock_irqsave(&card->lock, flags); | |
967 | ||
968 | if (!card->packets) | |
969 | card->packets = packet; | |
970 | else { | |
971 | cur = card->packets; | |
972 | while (cur->next) | |
973 | cur = cur->next; | |
974 | cur->next = packet; | |
975 | } | |
976 | ||
977 | switch (type) { | |
978 | case MVMS_CMD: | |
979 | priv->dnld_sent = DNLD_CMD_SENT; | |
980 | break; | |
981 | case MVMS_DAT: | |
982 | priv->dnld_sent = DNLD_DATA_SENT; | |
983 | break; | |
984 | default: | |
985 | lbs_deb_sdio("unknown packet type %d\n", (int)type); | |
986 | } | |
987 | ||
988 | spin_unlock_irqrestore(&card->lock, flags); | |
989 | ||
9b02f419 | 990 | queue_work(card->workqueue, &card->packet_worker); |
727c26ed PO |
991 | |
992 | ret = 0; | |
993 | ||
994 | out: | |
995 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
996 | ||
997 | return ret; | |
998 | } | |
999 | ||
49125454 AK |
1000 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
1001 | { | |
1002 | int ret = -1; | |
1003 | struct cmd_header cmd; | |
1004 | ||
1005 | memset(&cmd, 0, sizeof(cmd)); | |
1006 | ||
1007 | lbs_deb_sdio("send DEEP_SLEEP command\n"); | |
1008 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), | |
1009 | lbs_cmd_copyback, (unsigned long) &cmd); | |
1010 | if (ret) | |
f3a57fd1 | 1011 | netdev_err(priv->dev, "DEEP_SLEEP cmd failed\n"); |
49125454 AK |
1012 | |
1013 | mdelay(200); | |
1014 | return ret; | |
1015 | } | |
1016 | ||
1017 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) | |
1018 | { | |
1019 | struct if_sdio_card *card = priv->card; | |
1020 | int ret = -1; | |
1021 | ||
1022 | lbs_deb_enter(LBS_DEB_SDIO); | |
1023 | sdio_claim_host(card->func); | |
1024 | ||
1025 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); | |
1026 | if (ret) | |
f3a57fd1 | 1027 | netdev_err(priv->dev, "sdio_writeb failed!\n"); |
49125454 AK |
1028 | |
1029 | sdio_release_host(card->func); | |
1030 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1031 | return ret; | |
1032 | } | |
1033 | ||
1034 | static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv) | |
1035 | { | |
1036 | struct if_sdio_card *card = priv->card; | |
1037 | int ret = -1; | |
1038 | ||
1039 | lbs_deb_enter(LBS_DEB_SDIO); | |
1040 | sdio_claim_host(card->func); | |
1041 | ||
1042 | sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret); | |
1043 | if (ret) | |
f3a57fd1 | 1044 | netdev_err(priv->dev, "sdio_writeb failed!\n"); |
49125454 AK |
1045 | |
1046 | sdio_release_host(card->func); | |
1047 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1048 | return ret; | |
1049 | ||
1050 | } | |
1051 | ||
9a821f5d DD |
1052 | static struct mmc_host *reset_host; |
1053 | ||
1054 | static void if_sdio_reset_card_worker(struct work_struct *work) | |
1055 | { | |
1056 | /* | |
1057 | * The actual reset operation must be run outside of lbs_thread. This | |
1058 | * is because mmc_remove_host() will cause the device to be instantly | |
1059 | * destroyed, and the libertas driver then needs to end lbs_thread, | |
1060 | * leading to a deadlock. | |
1061 | * | |
1062 | * We run it in a workqueue totally independent from the if_sdio_card | |
1063 | * instance for that reason. | |
1064 | */ | |
1065 | ||
1066 | pr_info("Resetting card..."); | |
1067 | mmc_remove_host(reset_host); | |
1068 | mmc_add_host(reset_host); | |
1069 | } | |
1070 | static DECLARE_WORK(card_reset_work, if_sdio_reset_card_worker); | |
1071 | ||
1072 | static void if_sdio_reset_card(struct lbs_private *priv) | |
1073 | { | |
1074 | struct if_sdio_card *card = priv->card; | |
1075 | ||
1076 | if (work_pending(&card_reset_work)) | |
1077 | return; | |
1078 | ||
1079 | reset_host = card->func->card->host; | |
1080 | schedule_work(&card_reset_work); | |
1081 | } | |
1082 | ||
7e1f79a1 DD |
1083 | static int if_sdio_power_save(struct lbs_private *priv) |
1084 | { | |
1085 | struct if_sdio_card *card = priv->card; | |
1086 | int ret; | |
1087 | ||
1088 | flush_workqueue(card->workqueue); | |
1089 | ||
1090 | ret = if_sdio_power_off(card); | |
1091 | ||
1092 | /* Let runtime PM know the card is powered off */ | |
1093 | pm_runtime_put_sync(&card->func->dev); | |
1094 | ||
1095 | return ret; | |
1096 | } | |
1097 | ||
1098 | static int if_sdio_power_restore(struct lbs_private *priv) | |
1099 | { | |
1100 | struct if_sdio_card *card = priv->card; | |
66d647ef | 1101 | int r; |
7e1f79a1 DD |
1102 | |
1103 | /* Make sure the card will not be powered off by runtime PM */ | |
1104 | pm_runtime_get_sync(&card->func->dev); | |
1105 | ||
66d647ef DD |
1106 | r = if_sdio_power_on(card); |
1107 | if (r) | |
1108 | return r; | |
1109 | ||
1110 | wait_event(card->pwron_waitq, priv->fw_ready); | |
1111 | return 0; | |
7e1f79a1 DD |
1112 | } |
1113 | ||
1114 | ||
727c26ed PO |
1115 | /*******************************************************************/ |
1116 | /* SDIO callbacks */ | |
1117 | /*******************************************************************/ | |
1118 | ||
1119 | static void if_sdio_interrupt(struct sdio_func *func) | |
1120 | { | |
1121 | int ret; | |
1122 | struct if_sdio_card *card; | |
1123 | u8 cause; | |
1124 | ||
1125 | lbs_deb_enter(LBS_DEB_SDIO); | |
1126 | ||
1127 | card = sdio_get_drvdata(func); | |
1128 | ||
1129 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); | |
d2ac49fe | 1130 | if (ret || !cause) |
727c26ed PO |
1131 | goto out; |
1132 | ||
1133 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); | |
1134 | ||
1135 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); | |
1136 | if (ret) | |
1137 | goto out; | |
1138 | ||
1139 | /* | |
1140 | * Ignore the define name, this really means the card has | |
1141 | * successfully received the command. | |
1142 | */ | |
49125454 | 1143 | card->priv->is_activity_detected = 1; |
e775ed7c DW |
1144 | if (cause & IF_SDIO_H_INT_DNLD) |
1145 | lbs_host_to_card_done(card->priv); | |
1146 | ||
727c26ed PO |
1147 | |
1148 | if (cause & IF_SDIO_H_INT_UPLD) { | |
1149 | ret = if_sdio_card_to_host(card); | |
1150 | if (ret) | |
1151 | goto out; | |
1152 | } | |
1153 | ||
1154 | ret = 0; | |
1155 | ||
1156 | out: | |
1157 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1158 | } | |
1159 | ||
1160 | static int if_sdio_probe(struct sdio_func *func, | |
1161 | const struct sdio_device_id *id) | |
1162 | { | |
1163 | struct if_sdio_card *card; | |
69f9032d | 1164 | struct lbs_private *priv; |
727c26ed PO |
1165 | int ret, i; |
1166 | unsigned int model; | |
1167 | struct if_sdio_packet *packet; | |
1168 | ||
1169 | lbs_deb_enter(LBS_DEB_SDIO); | |
1170 | ||
1171 | for (i = 0;i < func->card->num_info;i++) { | |
1172 | if (sscanf(func->card->info[i], | |
1173 | "802.11 SDIO ID: %x", &model) == 1) | |
1174 | break; | |
1175 | if (sscanf(func->card->info[i], | |
1176 | "ID: %x", &model) == 1) | |
1177 | break; | |
e70a5ac5 | 1178 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
3d32a58b | 1179 | model = MODEL_8385; |
e70a5ac5 BZ |
1180 | break; |
1181 | } | |
727c26ed PO |
1182 | } |
1183 | ||
1184 | if (i == func->card->num_info) { | |
0e4e06ae | 1185 | pr_err("unable to identify card model\n"); |
727c26ed PO |
1186 | return -ENODEV; |
1187 | } | |
1188 | ||
1189 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
1190 | if (!card) | |
1191 | return -ENOMEM; | |
1192 | ||
1193 | card->func = func; | |
1194 | card->model = model; | |
2c7e5798 BZ |
1195 | |
1196 | switch (card->model) { | |
3d32a58b | 1197 | case MODEL_8385: |
2c7e5798 BZ |
1198 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; |
1199 | break; | |
3d32a58b | 1200 | case MODEL_8686: |
2c7e5798 BZ |
1201 | card->scratch_reg = IF_SDIO_SCRATCH; |
1202 | break; | |
3d32a58b | 1203 | case MODEL_8688: |
2c7e5798 BZ |
1204 | default: /* for newer chipsets */ |
1205 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
1206 | break; | |
1207 | } | |
1208 | ||
727c26ed | 1209 | spin_lock_init(&card->lock); |
9b02f419 | 1210 | card->workqueue = create_workqueue("libertas_sdio"); |
727c26ed | 1211 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
66d647ef | 1212 | init_waitqueue_head(&card->pwron_waitq); |
727c26ed | 1213 | |
3d32a58b DW |
1214 | /* Check if we support this card */ |
1215 | for (i = 0; i < ARRAY_SIZE(fw_table); i++) { | |
1216 | if (card->model == fw_table[i].model) | |
727c26ed PO |
1217 | break; |
1218 | } | |
3d32a58b | 1219 | if (i == ARRAY_SIZE(fw_table)) { |
0e4e06ae | 1220 | pr_err("unknown card model 0x%x\n", card->model); |
727c26ed PO |
1221 | ret = -ENODEV; |
1222 | goto free; | |
1223 | } | |
1224 | ||
727c26ed PO |
1225 | sdio_set_drvdata(func, card); |
1226 | ||
1227 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " | |
1228 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", | |
1229 | func->class, func->vendor, func->device, | |
1230 | model, (unsigned)card->ioport); | |
1231 | ||
727c26ed | 1232 | |
10078321 | 1233 | priv = lbs_add_card(card, &func->dev); |
727c26ed PO |
1234 | if (!priv) { |
1235 | ret = -ENOMEM; | |
7e1f79a1 | 1236 | goto free; |
727c26ed PO |
1237 | } |
1238 | ||
1239 | card->priv = priv; | |
1240 | ||
1241 | priv->card = card; | |
1242 | priv->hw_host_to_card = if_sdio_host_to_card; | |
49125454 AK |
1243 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; |
1244 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; | |
1245 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; | |
9a821f5d | 1246 | priv->reset_card = if_sdio_reset_card; |
7e1f79a1 DD |
1247 | priv->power_save = if_sdio_power_save; |
1248 | priv->power_restore = if_sdio_power_restore; | |
727c26ed | 1249 | |
7e1f79a1 | 1250 | ret = if_sdio_power_on(card); |
727c26ed | 1251 | if (ret) |
7e1f79a1 | 1252 | goto err_activate_card; |
d26285f8 | 1253 | |
727c26ed PO |
1254 | out: |
1255 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1256 | ||
1257 | return ret; | |
1258 | ||
1259 | err_activate_card: | |
9b02f419 DW |
1260 | flush_workqueue(card->workqueue); |
1261 | lbs_remove_card(priv); | |
727c26ed | 1262 | free: |
9b02f419 | 1263 | destroy_workqueue(card->workqueue); |
727c26ed PO |
1264 | while (card->packets) { |
1265 | packet = card->packets; | |
1266 | card->packets = card->packets->next; | |
1267 | kfree(packet); | |
1268 | } | |
1269 | ||
1270 | kfree(card); | |
1271 | ||
1272 | goto out; | |
1273 | } | |
1274 | ||
1275 | static void if_sdio_remove(struct sdio_func *func) | |
1276 | { | |
1277 | struct if_sdio_card *card; | |
1278 | struct if_sdio_packet *packet; | |
1279 | ||
1280 | lbs_deb_enter(LBS_DEB_SDIO); | |
1281 | ||
1282 | card = sdio_get_drvdata(func); | |
1283 | ||
7e1f79a1 DD |
1284 | /* Undo decrement done above in if_sdio_probe */ |
1285 | pm_runtime_get_noresume(&func->dev); | |
1286 | ||
3d32a58b | 1287 | if (user_rmmod && (card->model == MODEL_8688)) { |
6bc61f4d BZ |
1288 | /* |
1289 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1290 | * multiple functions | |
1291 | */ | |
1292 | struct cmd_header cmd; | |
1293 | ||
1294 | memset(&cmd, 0, sizeof(cmd)); | |
1295 | ||
1296 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1297 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1298 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1299 | (unsigned long) &cmd)) | |
0e4e06ae | 1300 | pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); |
6bc61f4d | 1301 | } |
d26285f8 | 1302 | |
727c26ed PO |
1303 | |
1304 | lbs_deb_sdio("call remove card\n"); | |
6bc61f4d | 1305 | lbs_stop_card(card->priv); |
10078321 | 1306 | lbs_remove_card(card->priv); |
727c26ed | 1307 | |
9b02f419 DW |
1308 | flush_workqueue(card->workqueue); |
1309 | destroy_workqueue(card->workqueue); | |
727c26ed | 1310 | |
727c26ed PO |
1311 | while (card->packets) { |
1312 | packet = card->packets; | |
1313 | card->packets = card->packets->next; | |
1314 | kfree(packet); | |
1315 | } | |
1316 | ||
727c26ed PO |
1317 | lbs_deb_leave(LBS_DEB_SDIO); |
1318 | } | |
1319 | ||
66fceb69 AK |
1320 | static int if_sdio_suspend(struct device *dev) |
1321 | { | |
1322 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1323 | int ret; | |
1324 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1325 | ||
1326 | mmc_pm_flag_t flags = sdio_get_host_pm_caps(func); | |
1327 | ||
f3a57fd1 JP |
1328 | dev_info(dev, "%s: suspend: PM flags = 0x%x\n", |
1329 | sdio_func_id(func), flags); | |
66fceb69 AK |
1330 | |
1331 | /* If we aren't being asked to wake on anything, we should bail out | |
1332 | * and let the SD stack power down the card. | |
1333 | */ | |
1334 | if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) { | |
f3a57fd1 | 1335 | dev_info(dev, "Suspend without wake params -- powering down card\n"); |
66fceb69 AK |
1336 | return -ENOSYS; |
1337 | } | |
1338 | ||
1339 | if (!(flags & MMC_PM_KEEP_POWER)) { | |
f3a57fd1 JP |
1340 | dev_err(dev, "%s: cannot remain alive while host is suspended\n", |
1341 | sdio_func_id(func)); | |
66fceb69 AK |
1342 | return -ENOSYS; |
1343 | } | |
1344 | ||
1345 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
1346 | if (ret) | |
1347 | return ret; | |
1348 | ||
1349 | ret = lbs_suspend(card->priv); | |
1350 | if (ret) | |
1351 | return ret; | |
1352 | ||
1353 | return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); | |
1354 | } | |
1355 | ||
1356 | static int if_sdio_resume(struct device *dev) | |
1357 | { | |
1358 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1359 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1360 | int ret; | |
1361 | ||
f3a57fd1 | 1362 | dev_info(dev, "%s: resume: we're back\n", sdio_func_id(func)); |
66fceb69 AK |
1363 | |
1364 | ret = lbs_resume(card->priv); | |
1365 | ||
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | static const struct dev_pm_ops if_sdio_pm_ops = { | |
1370 | .suspend = if_sdio_suspend, | |
1371 | .resume = if_sdio_resume, | |
1372 | }; | |
1373 | ||
727c26ed PO |
1374 | static struct sdio_driver if_sdio_driver = { |
1375 | .name = "libertas_sdio", | |
1376 | .id_table = if_sdio_ids, | |
1377 | .probe = if_sdio_probe, | |
1378 | .remove = if_sdio_remove, | |
66fceb69 AK |
1379 | .drv = { |
1380 | .pm = &if_sdio_pm_ops, | |
1381 | }, | |
727c26ed PO |
1382 | }; |
1383 | ||
1384 | /*******************************************************************/ | |
1385 | /* Module functions */ | |
1386 | /*******************************************************************/ | |
1387 | ||
4fb910fd | 1388 | static int __init if_sdio_init_module(void) |
727c26ed PO |
1389 | { |
1390 | int ret = 0; | |
1391 | ||
1392 | lbs_deb_enter(LBS_DEB_SDIO); | |
1393 | ||
1394 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1395 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1396 | ||
1397 | ret = sdio_register_driver(&if_sdio_driver); | |
1398 | ||
6bc61f4d BZ |
1399 | /* Clear the flag in case user removes the card. */ |
1400 | user_rmmod = 0; | |
1401 | ||
727c26ed PO |
1402 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
1403 | ||
1404 | return ret; | |
1405 | } | |
1406 | ||
4fb910fd | 1407 | static void __exit if_sdio_exit_module(void) |
727c26ed PO |
1408 | { |
1409 | lbs_deb_enter(LBS_DEB_SDIO); | |
1410 | ||
6bc61f4d BZ |
1411 | /* Set the flag as user is removing this module. */ |
1412 | user_rmmod = 1; | |
d26285f8 | 1413 | |
9a821f5d DD |
1414 | cancel_work_sync(&card_reset_work); |
1415 | ||
727c26ed PO |
1416 | sdio_unregister_driver(&if_sdio_driver); |
1417 | ||
1418 | lbs_deb_leave(LBS_DEB_SDIO); | |
1419 | } | |
1420 | ||
1421 | module_init(if_sdio_init_module); | |
1422 | module_exit(if_sdio_exit_module); | |
1423 | ||
1424 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1425 | MODULE_AUTHOR("Pierre Ossman"); | |
1426 | MODULE_LICENSE("GPL"); |