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) { | |
73e6991a HH |
591 | timeout = jiffies + HZ; |
592 | while (1) { | |
593 | ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); | |
594 | if (ret) | |
595 | goto release; | |
596 | ||
597 | req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, | |
598 | &ret); | |
599 | if (ret) | |
600 | goto release; | |
601 | ||
602 | req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, | |
603 | &ret) << 8; | |
604 | if (ret) | |
605 | goto release; | |
606 | ||
607 | /* | |
608 | * For SD8688 wait until the length is not 0, 1 or 2 | |
609 | * before downloading the first FW block, | |
610 | * since BOOT code writes the register to indicate the | |
611 | * helper/FW download winner, | |
612 | * the value could be 1 or 2 (Func1 or Func2). | |
613 | */ | |
614 | if ((size != fw->size) || (req_size > 2)) | |
615 | break; | |
616 | if (time_after(jiffies, timeout)) { | |
617 | ret = -ETIMEDOUT; | |
618 | goto release; | |
619 | } | |
620 | mdelay(1); | |
621 | } | |
727c26ed | 622 | |
727c26ed PO |
623 | /* |
624 | lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size); | |
625 | */ | |
626 | if (req_size == 0) { | |
627 | lbs_deb_sdio("firmware helper gave up early\n"); | |
628 | ret = -EIO; | |
629 | goto release; | |
630 | } | |
631 | ||
632 | if (req_size & 0x01) { | |
633 | lbs_deb_sdio("firmware helper signalled error\n"); | |
634 | ret = -EIO; | |
635 | goto release; | |
636 | } | |
637 | ||
638 | if (req_size > size) | |
639 | req_size = size; | |
640 | ||
641 | while (req_size) { | |
642 | chunk_size = min(req_size, (size_t)512); | |
643 | ||
644 | memcpy(chunk_buffer, firmware, chunk_size); | |
645 | /* | |
646 | lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n", | |
647 | chunk_size, (chunk_size + 31) / 32 * 32); | |
648 | */ | |
649 | ret = sdio_writesb(card->func, card->ioport, | |
23827926 | 650 | chunk_buffer, roundup(chunk_size, 32)); |
727c26ed PO |
651 | if (ret) |
652 | goto release; | |
653 | ||
654 | firmware += chunk_size; | |
655 | size -= chunk_size; | |
656 | req_size -= chunk_size; | |
657 | } | |
658 | } | |
659 | ||
660 | ret = 0; | |
661 | ||
662 | lbs_deb_sdio("waiting for firmware to boot...\n"); | |
663 | ||
664 | /* wait for the firmware to boot */ | |
665 | timeout = jiffies + HZ; | |
666 | while (1) { | |
667 | u16 scratch; | |
668 | ||
669 | scratch = if_sdio_read_scratch(card, &ret); | |
670 | if (ret) | |
671 | goto release; | |
672 | ||
673 | if (scratch == IF_SDIO_FIRMWARE_OK) | |
674 | break; | |
675 | ||
676 | if (time_after(jiffies, timeout)) { | |
677 | ret = -ETIMEDOUT; | |
678 | goto release; | |
679 | } | |
680 | ||
681 | msleep(10); | |
682 | } | |
683 | ||
684 | ret = 0; | |
685 | ||
686 | release: | |
727c26ed PO |
687 | sdio_release_host(card->func); |
688 | kfree(chunk_buffer); | |
727c26ed PO |
689 | |
690 | out: | |
691 | if (ret) | |
0e4e06ae | 692 | pr_err("failed to load firmware\n"); |
727c26ed PO |
693 | |
694 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
727c26ed PO |
695 | return ret; |
696 | } | |
697 | ||
66d647ef DD |
698 | static void if_sdio_do_prog_firmware(struct lbs_private *priv, int ret, |
699 | const struct firmware *helper, | |
700 | const struct firmware *mainfw) | |
701 | { | |
702 | struct if_sdio_card *card = priv->card; | |
703 | ||
704 | if (ret) { | |
705 | pr_err("failed to find firmware (%d)\n", ret); | |
706 | return; | |
707 | } | |
708 | ||
709 | ret = if_sdio_prog_helper(card, helper); | |
710 | if (ret) | |
1dfba306 | 711 | return; |
66d647ef DD |
712 | |
713 | lbs_deb_sdio("Helper firmware loaded\n"); | |
714 | ||
715 | ret = if_sdio_prog_real(card, mainfw); | |
716 | if (ret) | |
1dfba306 | 717 | return; |
66d647ef DD |
718 | |
719 | lbs_deb_sdio("Firmware loaded\n"); | |
720 | if_sdio_finish_power_on(card); | |
66d647ef DD |
721 | } |
722 | ||
727c26ed PO |
723 | static int if_sdio_prog_firmware(struct if_sdio_card *card) |
724 | { | |
725 | int ret; | |
726 | u16 scratch; | |
727 | ||
728 | lbs_deb_enter(LBS_DEB_SDIO); | |
729 | ||
731b2034 PF |
730 | /* |
731 | * Disable interrupts | |
732 | */ | |
733 | sdio_claim_host(card->func); | |
734 | sdio_writeb(card->func, 0x00, IF_SDIO_H_INT_MASK, &ret); | |
735 | sdio_release_host(card->func); | |
736 | ||
727c26ed PO |
737 | sdio_claim_host(card->func); |
738 | scratch = if_sdio_read_scratch(card, &ret); | |
739 | sdio_release_host(card->func); | |
740 | ||
731b2034 PF |
741 | lbs_deb_sdio("firmware status = %#x\n", scratch); |
742 | lbs_deb_sdio("scratch ret = %d\n", ret); | |
743 | ||
727c26ed PO |
744 | if (ret) |
745 | goto out; | |
746 | ||
2c7e5798 | 747 | |
731b2034 PF |
748 | /* |
749 | * The manual clearly describes that FEDC is the right code to use | |
750 | * to detect firmware presence, but for SD8686 it is not that simple. | |
751 | * Scratch is also used to store the RX packet length, so we lose | |
752 | * the FEDC value early on. So we use a non-zero check in order | |
753 | * to validate firmware presence. | |
754 | * Additionally, the SD8686 in the Gumstix always has the high scratch | |
755 | * bit set, even when the firmware is not loaded. So we have to | |
756 | * exclude that from the test. | |
757 | */ | |
727c26ed PO |
758 | if (scratch == IF_SDIO_FIRMWARE_OK) { |
759 | lbs_deb_sdio("firmware already loaded\n"); | |
66d647ef DD |
760 | if_sdio_finish_power_on(card); |
761 | return 0; | |
731b2034 PF |
762 | } else if ((card->model == MODEL_8686) && (scratch & 0x7fff)) { |
763 | lbs_deb_sdio("firmware may be running\n"); | |
66d647ef DD |
764 | if_sdio_finish_power_on(card); |
765 | return 0; | |
3d32a58b DW |
766 | } |
767 | ||
66d647ef DD |
768 | ret = lbs_get_firmware_async(card->priv, &card->func->dev, card->model, |
769 | fw_table, if_sdio_do_prog_firmware); | |
727c26ed PO |
770 | |
771 | out: | |
3d32a58b | 772 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
727c26ed PO |
773 | return ret; |
774 | } | |
775 | ||
7e1f79a1 DD |
776 | /********************************************************************/ |
777 | /* Power management */ | |
778 | /********************************************************************/ | |
779 | ||
66d647ef DD |
780 | /* Finish power on sequence (after firmware is loaded) */ |
781 | static void if_sdio_finish_power_on(struct if_sdio_card *card) | |
7e1f79a1 DD |
782 | { |
783 | struct sdio_func *func = card->func; | |
784 | struct lbs_private *priv = card->priv; | |
7e1f79a1 DD |
785 | int ret; |
786 | ||
787 | sdio_claim_host(func); | |
66d647ef | 788 | sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE); |
7e1f79a1 DD |
789 | |
790 | /* | |
791 | * Get rx_unit if the chip is SD8688 or newer. | |
792 | * SD8385 & SD8686 do not have rx_unit. | |
793 | */ | |
794 | if ((card->model != MODEL_8385) | |
795 | && (card->model != MODEL_8686)) | |
796 | card->rx_unit = if_sdio_read_rx_unit(card); | |
797 | else | |
798 | card->rx_unit = 0; | |
799 | ||
800 | /* | |
801 | * Set up the interrupt handler late. | |
802 | * | |
803 | * If we set it up earlier, the (buggy) hardware generates a spurious | |
804 | * interrupt, even before the interrupt has been enabled, with | |
805 | * CCCR_INTx = 0. | |
806 | * | |
807 | * We register the interrupt handler late so that we can handle any | |
808 | * spurious interrupts, and also to avoid generation of that known | |
809 | * spurious interrupt in the first place. | |
810 | */ | |
811 | ret = sdio_claim_irq(func, if_sdio_interrupt); | |
812 | if (ret) | |
66d647ef | 813 | goto release; |
7e1f79a1 DD |
814 | |
815 | /* | |
816 | * Enable interrupts now that everything is set up | |
817 | */ | |
818 | sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); | |
819 | if (ret) | |
820 | goto release_irq; | |
821 | ||
822 | sdio_release_host(func); | |
823 | ||
46602698 BZ |
824 | /* Set fw_ready before queuing any commands so that |
825 | * lbs_thread won't block from sending them to firmware. | |
826 | */ | |
827 | priv->fw_ready = 1; | |
828 | ||
7e1f79a1 DD |
829 | /* |
830 | * FUNC_INIT is required for SD8688 WLAN/BT multiple functions | |
831 | */ | |
832 | if (card->model == MODEL_8688) { | |
833 | struct cmd_header cmd; | |
834 | ||
835 | memset(&cmd, 0, sizeof(cmd)); | |
836 | ||
837 | lbs_deb_sdio("send function INIT command\n"); | |
838 | if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd), | |
839 | lbs_cmd_copyback, (unsigned long) &cmd)) | |
840 | netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n"); | |
841 | } | |
842 | ||
66d647ef | 843 | wake_up(&card->pwron_waitq); |
7e1f79a1 | 844 | |
66d647ef DD |
845 | if (!card->started) { |
846 | ret = lbs_start_card(priv); | |
847 | if_sdio_power_off(card); | |
848 | if (ret == 0) { | |
849 | card->started = true; | |
850 | /* Tell PM core that we don't need the card to be | |
851 | * powered now */ | |
d94248ac | 852 | pm_runtime_put(&func->dev); |
66d647ef DD |
853 | } |
854 | } | |
855 | ||
856 | return; | |
7e1f79a1 DD |
857 | |
858 | release_irq: | |
859 | sdio_release_irq(func); | |
66d647ef DD |
860 | release: |
861 | sdio_release_host(func); | |
862 | } | |
863 | ||
864 | static int if_sdio_power_on(struct if_sdio_card *card) | |
865 | { | |
866 | struct sdio_func *func = card->func; | |
867 | struct mmc_host *host = func->card->host; | |
868 | int ret; | |
869 | ||
870 | sdio_claim_host(func); | |
871 | ||
872 | ret = sdio_enable_func(func); | |
873 | if (ret) | |
874 | goto release; | |
875 | ||
876 | /* For 1-bit transfers to the 8686 model, we need to enable the | |
877 | * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0 | |
878 | * bit to allow access to non-vendor registers. */ | |
879 | if ((card->model == MODEL_8686) && | |
880 | (host->caps & MMC_CAP_SDIO_IRQ) && | |
881 | (host->ios.bus_width == MMC_BUS_WIDTH_1)) { | |
882 | u8 reg; | |
883 | ||
884 | func->card->quirks |= MMC_QUIRK_LENIENT_FN0; | |
885 | reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret); | |
886 | if (ret) | |
887 | goto disable; | |
888 | ||
889 | reg |= SDIO_BUS_ECSI; | |
890 | sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret); | |
891 | if (ret) | |
892 | goto disable; | |
893 | } | |
894 | ||
895 | card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); | |
896 | if (ret) | |
897 | goto disable; | |
898 | ||
899 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8; | |
900 | if (ret) | |
901 | goto disable; | |
902 | ||
903 | card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16; | |
904 | if (ret) | |
905 | goto disable; | |
906 | ||
907 | sdio_release_host(func); | |
908 | ret = if_sdio_prog_firmware(card); | |
909 | if (ret) { | |
eddc633a AK |
910 | sdio_claim_host(func); |
911 | goto disable; | |
66d647ef DD |
912 | } |
913 | ||
914 | return 0; | |
915 | ||
7e1f79a1 DD |
916 | disable: |
917 | sdio_disable_func(func); | |
918 | release: | |
919 | sdio_release_host(func); | |
920 | return ret; | |
921 | } | |
922 | ||
923 | static int if_sdio_power_off(struct if_sdio_card *card) | |
924 | { | |
925 | struct sdio_func *func = card->func; | |
926 | struct lbs_private *priv = card->priv; | |
927 | ||
928 | priv->fw_ready = 0; | |
929 | ||
930 | sdio_claim_host(func); | |
931 | sdio_release_irq(func); | |
932 | sdio_disable_func(func); | |
933 | sdio_release_host(func); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | ||
727c26ed PO |
938 | /*******************************************************************/ |
939 | /* Libertas callbacks */ | |
940 | /*******************************************************************/ | |
941 | ||
69f9032d HS |
942 | static int if_sdio_host_to_card(struct lbs_private *priv, |
943 | u8 type, u8 *buf, u16 nb) | |
727c26ed PO |
944 | { |
945 | int ret; | |
946 | struct if_sdio_card *card; | |
947 | struct if_sdio_packet *packet, *cur; | |
948 | u16 size; | |
949 | unsigned long flags; | |
950 | ||
951 | lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb); | |
952 | ||
953 | card = priv->card; | |
954 | ||
955 | if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) { | |
956 | ret = -EINVAL; | |
957 | goto out; | |
958 | } | |
959 | ||
960 | /* | |
961 | * The transfer must be in one transaction or the firmware | |
ad3868b2 PO |
962 | * goes suicidal. There's no way to guarantee that for all |
963 | * controllers, but we can at least try. | |
727c26ed | 964 | */ |
ad3868b2 | 965 | size = sdio_align_size(card->func, nb + 4); |
727c26ed PO |
966 | |
967 | packet = kzalloc(sizeof(struct if_sdio_packet) + size, | |
968 | GFP_ATOMIC); | |
969 | if (!packet) { | |
970 | ret = -ENOMEM; | |
971 | goto out; | |
972 | } | |
973 | ||
974 | packet->next = NULL; | |
975 | packet->nb = size; | |
976 | ||
977 | /* | |
978 | * SDIO specific header. | |
979 | */ | |
980 | packet->buffer[0] = (nb + 4) & 0xff; | |
981 | packet->buffer[1] = ((nb + 4) >> 8) & 0xff; | |
982 | packet->buffer[2] = type; | |
983 | packet->buffer[3] = 0; | |
984 | ||
985 | memcpy(packet->buffer + 4, buf, nb); | |
986 | ||
987 | spin_lock_irqsave(&card->lock, flags); | |
988 | ||
989 | if (!card->packets) | |
990 | card->packets = packet; | |
991 | else { | |
992 | cur = card->packets; | |
993 | while (cur->next) | |
994 | cur = cur->next; | |
995 | cur->next = packet; | |
996 | } | |
997 | ||
998 | switch (type) { | |
999 | case MVMS_CMD: | |
1000 | priv->dnld_sent = DNLD_CMD_SENT; | |
1001 | break; | |
1002 | case MVMS_DAT: | |
1003 | priv->dnld_sent = DNLD_DATA_SENT; | |
1004 | break; | |
1005 | default: | |
1006 | lbs_deb_sdio("unknown packet type %d\n", (int)type); | |
1007 | } | |
1008 | ||
1009 | spin_unlock_irqrestore(&card->lock, flags); | |
1010 | ||
9b02f419 | 1011 | queue_work(card->workqueue, &card->packet_worker); |
727c26ed PO |
1012 | |
1013 | ret = 0; | |
1014 | ||
1015 | out: | |
1016 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1017 | ||
1018 | return ret; | |
1019 | } | |
1020 | ||
49125454 AK |
1021 | static int if_sdio_enter_deep_sleep(struct lbs_private *priv) |
1022 | { | |
1023 | int ret = -1; | |
1024 | struct cmd_header cmd; | |
1025 | ||
1026 | memset(&cmd, 0, sizeof(cmd)); | |
1027 | ||
1028 | lbs_deb_sdio("send DEEP_SLEEP command\n"); | |
1029 | ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd), | |
1030 | lbs_cmd_copyback, (unsigned long) &cmd); | |
1031 | if (ret) | |
f3a57fd1 | 1032 | netdev_err(priv->dev, "DEEP_SLEEP cmd failed\n"); |
49125454 AK |
1033 | |
1034 | mdelay(200); | |
1035 | return ret; | |
1036 | } | |
1037 | ||
1038 | static int if_sdio_exit_deep_sleep(struct lbs_private *priv) | |
1039 | { | |
1040 | struct if_sdio_card *card = priv->card; | |
1041 | int ret = -1; | |
1042 | ||
1043 | lbs_deb_enter(LBS_DEB_SDIO); | |
1044 | sdio_claim_host(card->func); | |
1045 | ||
1046 | sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret); | |
1047 | if (ret) | |
f3a57fd1 | 1048 | netdev_err(priv->dev, "sdio_writeb failed!\n"); |
49125454 AK |
1049 | |
1050 | sdio_release_host(card->func); | |
1051 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv) | |
1056 | { | |
1057 | struct if_sdio_card *card = priv->card; | |
1058 | int ret = -1; | |
1059 | ||
1060 | lbs_deb_enter(LBS_DEB_SDIO); | |
1061 | sdio_claim_host(card->func); | |
1062 | ||
1063 | sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret); | |
1064 | if (ret) | |
f3a57fd1 | 1065 | netdev_err(priv->dev, "sdio_writeb failed!\n"); |
49125454 AK |
1066 | |
1067 | sdio_release_host(card->func); | |
1068 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1069 | return ret; | |
1070 | ||
1071 | } | |
1072 | ||
9a821f5d DD |
1073 | static struct mmc_host *reset_host; |
1074 | ||
1075 | static void if_sdio_reset_card_worker(struct work_struct *work) | |
1076 | { | |
1077 | /* | |
1078 | * The actual reset operation must be run outside of lbs_thread. This | |
1079 | * is because mmc_remove_host() will cause the device to be instantly | |
1080 | * destroyed, and the libertas driver then needs to end lbs_thread, | |
1081 | * leading to a deadlock. | |
1082 | * | |
1083 | * We run it in a workqueue totally independent from the if_sdio_card | |
1084 | * instance for that reason. | |
1085 | */ | |
1086 | ||
1087 | pr_info("Resetting card..."); | |
1088 | mmc_remove_host(reset_host); | |
1089 | mmc_add_host(reset_host); | |
1090 | } | |
1091 | static DECLARE_WORK(card_reset_work, if_sdio_reset_card_worker); | |
1092 | ||
1093 | static void if_sdio_reset_card(struct lbs_private *priv) | |
1094 | { | |
1095 | struct if_sdio_card *card = priv->card; | |
1096 | ||
1097 | if (work_pending(&card_reset_work)) | |
1098 | return; | |
1099 | ||
1100 | reset_host = card->func->card->host; | |
1101 | schedule_work(&card_reset_work); | |
1102 | } | |
1103 | ||
7e1f79a1 DD |
1104 | static int if_sdio_power_save(struct lbs_private *priv) |
1105 | { | |
1106 | struct if_sdio_card *card = priv->card; | |
1107 | int ret; | |
1108 | ||
1109 | flush_workqueue(card->workqueue); | |
1110 | ||
1111 | ret = if_sdio_power_off(card); | |
1112 | ||
1113 | /* Let runtime PM know the card is powered off */ | |
1114 | pm_runtime_put_sync(&card->func->dev); | |
1115 | ||
1116 | return ret; | |
1117 | } | |
1118 | ||
1119 | static int if_sdio_power_restore(struct lbs_private *priv) | |
1120 | { | |
1121 | struct if_sdio_card *card = priv->card; | |
66d647ef | 1122 | int r; |
7e1f79a1 DD |
1123 | |
1124 | /* Make sure the card will not be powered off by runtime PM */ | |
1125 | pm_runtime_get_sync(&card->func->dev); | |
1126 | ||
66d647ef DD |
1127 | r = if_sdio_power_on(card); |
1128 | if (r) | |
1129 | return r; | |
1130 | ||
1131 | wait_event(card->pwron_waitq, priv->fw_ready); | |
1132 | return 0; | |
7e1f79a1 DD |
1133 | } |
1134 | ||
1135 | ||
727c26ed PO |
1136 | /*******************************************************************/ |
1137 | /* SDIO callbacks */ | |
1138 | /*******************************************************************/ | |
1139 | ||
1140 | static void if_sdio_interrupt(struct sdio_func *func) | |
1141 | { | |
1142 | int ret; | |
1143 | struct if_sdio_card *card; | |
1144 | u8 cause; | |
1145 | ||
1146 | lbs_deb_enter(LBS_DEB_SDIO); | |
1147 | ||
1148 | card = sdio_get_drvdata(func); | |
1149 | ||
1150 | cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret); | |
d2ac49fe | 1151 | if (ret || !cause) |
727c26ed PO |
1152 | goto out; |
1153 | ||
1154 | lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause); | |
1155 | ||
1156 | sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret); | |
1157 | if (ret) | |
1158 | goto out; | |
1159 | ||
1160 | /* | |
1161 | * Ignore the define name, this really means the card has | |
1162 | * successfully received the command. | |
1163 | */ | |
49125454 | 1164 | card->priv->is_activity_detected = 1; |
e775ed7c DW |
1165 | if (cause & IF_SDIO_H_INT_DNLD) |
1166 | lbs_host_to_card_done(card->priv); | |
1167 | ||
727c26ed PO |
1168 | |
1169 | if (cause & IF_SDIO_H_INT_UPLD) { | |
1170 | ret = if_sdio_card_to_host(card); | |
1171 | if (ret) | |
1172 | goto out; | |
1173 | } | |
1174 | ||
1175 | ret = 0; | |
1176 | ||
1177 | out: | |
1178 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1179 | } | |
1180 | ||
1181 | static int if_sdio_probe(struct sdio_func *func, | |
1182 | const struct sdio_device_id *id) | |
1183 | { | |
1184 | struct if_sdio_card *card; | |
69f9032d | 1185 | struct lbs_private *priv; |
727c26ed PO |
1186 | int ret, i; |
1187 | unsigned int model; | |
1188 | struct if_sdio_packet *packet; | |
1189 | ||
1190 | lbs_deb_enter(LBS_DEB_SDIO); | |
1191 | ||
1192 | for (i = 0;i < func->card->num_info;i++) { | |
1193 | if (sscanf(func->card->info[i], | |
1194 | "802.11 SDIO ID: %x", &model) == 1) | |
1195 | break; | |
1196 | if (sscanf(func->card->info[i], | |
1197 | "ID: %x", &model) == 1) | |
1198 | break; | |
e70a5ac5 | 1199 | if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) { |
3d32a58b | 1200 | model = MODEL_8385; |
e70a5ac5 BZ |
1201 | break; |
1202 | } | |
727c26ed PO |
1203 | } |
1204 | ||
1205 | if (i == func->card->num_info) { | |
0e4e06ae | 1206 | pr_err("unable to identify card model\n"); |
727c26ed PO |
1207 | return -ENODEV; |
1208 | } | |
1209 | ||
1210 | card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL); | |
1211 | if (!card) | |
1212 | return -ENOMEM; | |
1213 | ||
1214 | card->func = func; | |
1215 | card->model = model; | |
2c7e5798 BZ |
1216 | |
1217 | switch (card->model) { | |
3d32a58b | 1218 | case MODEL_8385: |
2c7e5798 BZ |
1219 | card->scratch_reg = IF_SDIO_SCRATCH_OLD; |
1220 | break; | |
3d32a58b | 1221 | case MODEL_8686: |
2c7e5798 BZ |
1222 | card->scratch_reg = IF_SDIO_SCRATCH; |
1223 | break; | |
3d32a58b | 1224 | case MODEL_8688: |
2c7e5798 BZ |
1225 | default: /* for newer chipsets */ |
1226 | card->scratch_reg = IF_SDIO_FW_STATUS; | |
1227 | break; | |
1228 | } | |
1229 | ||
727c26ed | 1230 | spin_lock_init(&card->lock); |
9b02f419 | 1231 | card->workqueue = create_workqueue("libertas_sdio"); |
727c26ed | 1232 | INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker); |
66d647ef | 1233 | init_waitqueue_head(&card->pwron_waitq); |
727c26ed | 1234 | |
3d32a58b DW |
1235 | /* Check if we support this card */ |
1236 | for (i = 0; i < ARRAY_SIZE(fw_table); i++) { | |
1237 | if (card->model == fw_table[i].model) | |
727c26ed PO |
1238 | break; |
1239 | } | |
3d32a58b | 1240 | if (i == ARRAY_SIZE(fw_table)) { |
0e4e06ae | 1241 | pr_err("unknown card model 0x%x\n", card->model); |
727c26ed PO |
1242 | ret = -ENODEV; |
1243 | goto free; | |
1244 | } | |
1245 | ||
727c26ed PO |
1246 | sdio_set_drvdata(func, card); |
1247 | ||
1248 | lbs_deb_sdio("class = 0x%X, vendor = 0x%X, " | |
1249 | "device = 0x%X, model = 0x%X, ioport = 0x%X\n", | |
1250 | func->class, func->vendor, func->device, | |
1251 | model, (unsigned)card->ioport); | |
1252 | ||
727c26ed | 1253 | |
10078321 | 1254 | priv = lbs_add_card(card, &func->dev); |
727c26ed PO |
1255 | if (!priv) { |
1256 | ret = -ENOMEM; | |
7e1f79a1 | 1257 | goto free; |
727c26ed PO |
1258 | } |
1259 | ||
1260 | card->priv = priv; | |
1261 | ||
1262 | priv->card = card; | |
1263 | priv->hw_host_to_card = if_sdio_host_to_card; | |
49125454 AK |
1264 | priv->enter_deep_sleep = if_sdio_enter_deep_sleep; |
1265 | priv->exit_deep_sleep = if_sdio_exit_deep_sleep; | |
1266 | priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup; | |
9a821f5d | 1267 | priv->reset_card = if_sdio_reset_card; |
7e1f79a1 DD |
1268 | priv->power_save = if_sdio_power_save; |
1269 | priv->power_restore = if_sdio_power_restore; | |
727c26ed | 1270 | |
7e1f79a1 | 1271 | ret = if_sdio_power_on(card); |
727c26ed | 1272 | if (ret) |
7e1f79a1 | 1273 | goto err_activate_card; |
d26285f8 | 1274 | |
727c26ed PO |
1275 | out: |
1276 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); | |
1277 | ||
1278 | return ret; | |
1279 | ||
1280 | err_activate_card: | |
9b02f419 DW |
1281 | flush_workqueue(card->workqueue); |
1282 | lbs_remove_card(priv); | |
727c26ed | 1283 | free: |
9b02f419 | 1284 | destroy_workqueue(card->workqueue); |
727c26ed PO |
1285 | while (card->packets) { |
1286 | packet = card->packets; | |
1287 | card->packets = card->packets->next; | |
1288 | kfree(packet); | |
1289 | } | |
1290 | ||
1291 | kfree(card); | |
1292 | ||
1293 | goto out; | |
1294 | } | |
1295 | ||
1296 | static void if_sdio_remove(struct sdio_func *func) | |
1297 | { | |
1298 | struct if_sdio_card *card; | |
1299 | struct if_sdio_packet *packet; | |
1300 | ||
1301 | lbs_deb_enter(LBS_DEB_SDIO); | |
1302 | ||
1303 | card = sdio_get_drvdata(func); | |
1304 | ||
7e1f79a1 DD |
1305 | /* Undo decrement done above in if_sdio_probe */ |
1306 | pm_runtime_get_noresume(&func->dev); | |
1307 | ||
3d32a58b | 1308 | if (user_rmmod && (card->model == MODEL_8688)) { |
6bc61f4d BZ |
1309 | /* |
1310 | * FUNC_SHUTDOWN is required for SD8688 WLAN/BT | |
1311 | * multiple functions | |
1312 | */ | |
1313 | struct cmd_header cmd; | |
1314 | ||
1315 | memset(&cmd, 0, sizeof(cmd)); | |
1316 | ||
1317 | lbs_deb_sdio("send function SHUTDOWN command\n"); | |
1318 | if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN, | |
1319 | &cmd, sizeof(cmd), lbs_cmd_copyback, | |
1320 | (unsigned long) &cmd)) | |
0e4e06ae | 1321 | pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n"); |
6bc61f4d | 1322 | } |
d26285f8 | 1323 | |
727c26ed PO |
1324 | |
1325 | lbs_deb_sdio("call remove card\n"); | |
6bc61f4d | 1326 | lbs_stop_card(card->priv); |
10078321 | 1327 | lbs_remove_card(card->priv); |
727c26ed | 1328 | |
9b02f419 DW |
1329 | flush_workqueue(card->workqueue); |
1330 | destroy_workqueue(card->workqueue); | |
727c26ed | 1331 | |
727c26ed PO |
1332 | while (card->packets) { |
1333 | packet = card->packets; | |
1334 | card->packets = card->packets->next; | |
1335 | kfree(packet); | |
1336 | } | |
1337 | ||
8c1057e4 | 1338 | kfree(card); |
727c26ed PO |
1339 | lbs_deb_leave(LBS_DEB_SDIO); |
1340 | } | |
1341 | ||
66fceb69 AK |
1342 | static int if_sdio_suspend(struct device *dev) |
1343 | { | |
1344 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1345 | int ret; | |
1346 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1347 | ||
1348 | mmc_pm_flag_t flags = sdio_get_host_pm_caps(func); | |
1349 | ||
f1072384 DD |
1350 | /* If we're powered off anyway, just let the mmc layer remove the |
1351 | * card. */ | |
1352 | if (!lbs_iface_active(card->priv)) | |
1353 | return -ENOSYS; | |
1354 | ||
f3a57fd1 JP |
1355 | dev_info(dev, "%s: suspend: PM flags = 0x%x\n", |
1356 | sdio_func_id(func), flags); | |
66fceb69 AK |
1357 | |
1358 | /* If we aren't being asked to wake on anything, we should bail out | |
1359 | * and let the SD stack power down the card. | |
1360 | */ | |
1361 | if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) { | |
f3a57fd1 | 1362 | dev_info(dev, "Suspend without wake params -- powering down card\n"); |
66fceb69 AK |
1363 | return -ENOSYS; |
1364 | } | |
1365 | ||
1366 | if (!(flags & MMC_PM_KEEP_POWER)) { | |
f3a57fd1 JP |
1367 | dev_err(dev, "%s: cannot remain alive while host is suspended\n", |
1368 | sdio_func_id(func)); | |
66fceb69 AK |
1369 | return -ENOSYS; |
1370 | } | |
1371 | ||
1372 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); | |
1373 | if (ret) | |
1374 | return ret; | |
1375 | ||
1376 | ret = lbs_suspend(card->priv); | |
1377 | if (ret) | |
1378 | return ret; | |
1379 | ||
1380 | return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ); | |
1381 | } | |
1382 | ||
1383 | static int if_sdio_resume(struct device *dev) | |
1384 | { | |
1385 | struct sdio_func *func = dev_to_sdio_func(dev); | |
1386 | struct if_sdio_card *card = sdio_get_drvdata(func); | |
1387 | int ret; | |
1388 | ||
f3a57fd1 | 1389 | dev_info(dev, "%s: resume: we're back\n", sdio_func_id(func)); |
66fceb69 AK |
1390 | |
1391 | ret = lbs_resume(card->priv); | |
1392 | ||
1393 | return ret; | |
1394 | } | |
1395 | ||
1396 | static const struct dev_pm_ops if_sdio_pm_ops = { | |
1397 | .suspend = if_sdio_suspend, | |
1398 | .resume = if_sdio_resume, | |
1399 | }; | |
1400 | ||
727c26ed PO |
1401 | static struct sdio_driver if_sdio_driver = { |
1402 | .name = "libertas_sdio", | |
1403 | .id_table = if_sdio_ids, | |
1404 | .probe = if_sdio_probe, | |
1405 | .remove = if_sdio_remove, | |
66fceb69 AK |
1406 | .drv = { |
1407 | .pm = &if_sdio_pm_ops, | |
1408 | }, | |
727c26ed PO |
1409 | }; |
1410 | ||
1411 | /*******************************************************************/ | |
1412 | /* Module functions */ | |
1413 | /*******************************************************************/ | |
1414 | ||
4fb910fd | 1415 | static int __init if_sdio_init_module(void) |
727c26ed PO |
1416 | { |
1417 | int ret = 0; | |
1418 | ||
1419 | lbs_deb_enter(LBS_DEB_SDIO); | |
1420 | ||
1421 | printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n"); | |
1422 | printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n"); | |
1423 | ||
1424 | ret = sdio_register_driver(&if_sdio_driver); | |
1425 | ||
6bc61f4d BZ |
1426 | /* Clear the flag in case user removes the card. */ |
1427 | user_rmmod = 0; | |
1428 | ||
727c26ed PO |
1429 | lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret); |
1430 | ||
1431 | return ret; | |
1432 | } | |
1433 | ||
4fb910fd | 1434 | static void __exit if_sdio_exit_module(void) |
727c26ed PO |
1435 | { |
1436 | lbs_deb_enter(LBS_DEB_SDIO); | |
1437 | ||
6bc61f4d BZ |
1438 | /* Set the flag as user is removing this module. */ |
1439 | user_rmmod = 1; | |
d26285f8 | 1440 | |
9a821f5d DD |
1441 | cancel_work_sync(&card_reset_work); |
1442 | ||
727c26ed PO |
1443 | sdio_unregister_driver(&if_sdio_driver); |
1444 | ||
1445 | lbs_deb_leave(LBS_DEB_SDIO); | |
1446 | } | |
1447 | ||
1448 | module_init(if_sdio_init_module); | |
1449 | module_exit(if_sdio_exit_module); | |
1450 | ||
1451 | MODULE_DESCRIPTION("Libertas SDIO WLAN Driver"); | |
1452 | MODULE_AUTHOR("Pierre Ossman"); | |
1453 | MODULE_LICENSE("GPL"); |