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ath9k: Replace ath9k_opmode with nl80211_iftype
[linux/fpc-iii.git] / drivers / net / wireless / libertas / if_sdio.c
blobb54e2ea8346bf26ae5071ed39bbfe450830a980d
1 /*
2 * linux/drivers/net/wireless/libertas/if_sdio.c
3 *
4 * Copyright 2007-2008 Pierre Ossman
5 *
6 * Inspired by if_cs.c, Copyright 2007 Holger Schurig
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or (at
11 * your option) any later version.
12 *
13 * This hardware has more or less no CMD53 support, so all registers
14 * must be accessed using sdio_readb()/sdio_writeb().
15 *
16 * Transfers must be in one transaction or the firmware goes bonkers.
17 * This means that the transfer must either be small enough to do a
18 * byte based transfer or it must be padded to a multiple of the
19 * current block size.
20 *
21 * As SDIO is still new to the kernel, it is unfortunately common with
22 * bugs in the host controllers related to that. One such bug is that
23 * controllers cannot do transfers that aren't a multiple of 4 bytes.
24 * If you don't have time to fix the host controller driver, you can
25 * work around the problem by modifying if_sdio_host_to_card() and
26 * if_sdio_card_to_host() to pad the data.
27 */
28
29 #include <linux/moduleparam.h>
30 #include <linux/firmware.h>
31 #include <linux/netdevice.h>
32 #include <linux/delay.h>
33 #include <linux/mmc/card.h>
34 #include <linux/mmc/sdio_func.h>
35 #include <linux/mmc/sdio_ids.h>
36
37 #include "host.h"
38 #include "decl.h"
39 #include "defs.h"
40 #include "dev.h"
41 #include "if_sdio.h"
42
43 static char *lbs_helper_name = NULL;
44 module_param_named(helper_name, lbs_helper_name, charp, 0644);
45
46 static char *lbs_fw_name = NULL;
47 module_param_named(fw_name, lbs_fw_name, charp, 0644);
48
49 static const struct sdio_device_id if_sdio_ids[] = {
50 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
51 { /* end: all zeroes */ },
52 };
53
54 MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
55
56 struct if_sdio_model {
57 int model;
58 const char *helper;
59 const char *firmware;
60 };
61
62 static struct if_sdio_model if_sdio_models[] = {
63 {
64 /* 8385 */
65 .model = 0x04,
66 .helper = "sd8385_helper.bin",
67 .firmware = "sd8385.bin",
68 },
69 {
70 /* 8686 */
71 .model = 0x0B,
72 .helper = "sd8686_helper.bin",
73 .firmware = "sd8686.bin",
74 },
75 };
76
77 struct if_sdio_packet {
78 struct if_sdio_packet *next;
79 u16 nb;
80 u8 buffer[0] __attribute__((aligned(4)));
81 };
82
83 struct if_sdio_card {
84 struct sdio_func *func;
85 struct lbs_private *priv;
86
87 int model;
88 unsigned long ioport;
89
90 const char *helper;
91 const char *firmware;
92
93 u8 buffer[65536];
94
95 spinlock_t lock;
96 struct if_sdio_packet *packets;
97 struct work_struct packet_worker;
98 };
99
100 /********************************************************************/
101 /* I/O */
102 /********************************************************************/
103
104 static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
105 {
106 int ret, reg;
107 u16 scratch;
108
109 if (card->model == 0x04)
110 reg = IF_SDIO_SCRATCH_OLD;
111 else
112 reg = IF_SDIO_SCRATCH;
113
114 scratch = sdio_readb(card->func, reg, &ret);
115 if (!ret)
116 scratch |= sdio_readb(card->func, reg + 1, &ret) << 8;
117
118 if (err)
119 *err = ret;
120
121 if (ret)
122 return 0xffff;
123
124 return scratch;
125 }
126
127 static int if_sdio_handle_cmd(struct if_sdio_card *card,
128 u8 *buffer, unsigned size)
129 {
130 struct lbs_private *priv = card->priv;
131 int ret;
132 unsigned long flags;
133 u8 i;
134
135 lbs_deb_enter(LBS_DEB_SDIO);
136
137 if (size > LBS_CMD_BUFFER_SIZE) {
138 lbs_deb_sdio("response packet too large (%d bytes)\n",
139 (int)size);
140 ret = -E2BIG;
141 goto out;
142 }
143
144 spin_lock_irqsave(&priv->driver_lock, flags);
145
146 i = (priv->resp_idx == 0) ? 1 : 0;
147 BUG_ON(priv->resp_len[i]);
148 priv->resp_len[i] = size;
149 memcpy(priv->resp_buf[i], buffer, size);
150 lbs_notify_command_response(priv, i);
151
152 spin_unlock_irqrestore(&card->priv->driver_lock, flags);
153
154 ret = 0;
155
156 out:
157 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
158 return ret;
159 }
160
161 static int if_sdio_handle_data(struct if_sdio_card *card,
162 u8 *buffer, unsigned size)
163 {
164 int ret;
165 struct sk_buff *skb;
166 char *data;
167
168 lbs_deb_enter(LBS_DEB_SDIO);
169
170 if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
171 lbs_deb_sdio("response packet too large (%d bytes)\n",
172 (int)size);
173 ret = -E2BIG;
174 goto out;
175 }
176
177 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
178 if (!skb) {
179 ret = -ENOMEM;
180 goto out;
181 }
182
183 skb_reserve(skb, NET_IP_ALIGN);
184
185 data = skb_put(skb, size);
186
187 memcpy(data, buffer, size);
188
189 lbs_process_rxed_packet(card->priv, skb);
190
191 ret = 0;
192
193 out:
194 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
195
196 return ret;
197 }
198
199 static int if_sdio_handle_event(struct if_sdio_card *card,
200 u8 *buffer, unsigned size)
201 {
202 int ret;
203 u32 event;
204
205 lbs_deb_enter(LBS_DEB_SDIO);
206
207 if (card->model == 0x04) {
208 event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
209 if (ret)
210 goto out;
211 } else {
212 if (size < 4) {
213 lbs_deb_sdio("event packet too small (%d bytes)\n",
214 (int)size);
215 ret = -EINVAL;
216 goto out;
217 }
218 event = buffer[3] << 24;
219 event |= buffer[2] << 16;
220 event |= buffer[1] << 8;
221 event |= buffer[0] << 0;
222 }
223
224 lbs_queue_event(card->priv, event & 0xFF);
225 ret = 0;
226
227 out:
228 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
229
230 return ret;
231 }
232
233 static int if_sdio_card_to_host(struct if_sdio_card *card)
234 {
235 int ret;
236 u8 status;
237 u16 size, type, chunk;
238 unsigned long timeout;
239
240 lbs_deb_enter(LBS_DEB_SDIO);
241
242 size = if_sdio_read_scratch(card, &ret);
243 if (ret)
244 goto out;
245
246 if (size < 4) {
247 lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
248 (int)size);
249 ret = -EINVAL;
250 goto out;
251 }
252
253 timeout = jiffies + HZ;
254 while (1) {
255 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
256 if (ret)
257 goto out;
258 if (status & IF_SDIO_IO_RDY)
259 break;
260 if (time_after(jiffies, timeout)) {
261 ret = -ETIMEDOUT;
262 goto out;
263 }
264 mdelay(1);
265 }
266
267 /*
268 * The transfer must be in one transaction or the firmware
269 * goes suicidal. There's no way to guarantee that for all
270 * controllers, but we can at least try.
271 */
272 chunk = sdio_align_size(card->func, size);
273
274 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
275 if (ret)
276 goto out;
277
278 chunk = card->buffer[0] | (card->buffer[1] << 8);
279 type = card->buffer[2] | (card->buffer[3] << 8);
280
281 lbs_deb_sdio("packet of type %d and size %d bytes\n",
282 (int)type, (int)chunk);
283
284 if (chunk > size) {
285 lbs_deb_sdio("packet fragment (%d > %d)\n",
286 (int)chunk, (int)size);
287 ret = -EINVAL;
288 goto out;
289 }
290
291 if (chunk < size) {
292 lbs_deb_sdio("packet fragment (%d < %d)\n",
293 (int)chunk, (int)size);
294 }
295
296 switch (type) {
297 case MVMS_CMD:
298 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
299 if (ret)
300 goto out;
301 break;
302 case MVMS_DAT:
303 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
304 if (ret)
305 goto out;
306 break;
307 case MVMS_EVENT:
308 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
309 if (ret)
310 goto out;
311 break;
312 default:
313 lbs_deb_sdio("invalid type (%d) from firmware\n",
314 (int)type);
315 ret = -EINVAL;
316 goto out;
317 }
318
319 out:
320 if (ret)
321 lbs_pr_err("problem fetching packet from firmware\n");
322
323 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
324
325 return ret;
326 }
327
328 static void if_sdio_host_to_card_worker(struct work_struct *work)
329 {
330 struct if_sdio_card *card;
331 struct if_sdio_packet *packet;
332 unsigned long timeout;
333 u8 status;
334 int ret;
335 unsigned long flags;
336
337 lbs_deb_enter(LBS_DEB_SDIO);
338
339 card = container_of(work, struct if_sdio_card, packet_worker);
340
341 while (1) {
342 spin_lock_irqsave(&card->lock, flags);
343 packet = card->packets;
344 if (packet)
345 card->packets = packet->next;
346 spin_unlock_irqrestore(&card->lock, flags);
347
348 if (!packet)
349 break;
350
351 sdio_claim_host(card->func);
352
353 timeout = jiffies + HZ;
354 while (1) {
355 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
356 if (ret)
357 goto release;
358 if (status & IF_SDIO_IO_RDY)
359 break;
360 if (time_after(jiffies, timeout)) {
361 ret = -ETIMEDOUT;
362 goto release;
363 }
364 mdelay(1);
365 }
366
367 ret = sdio_writesb(card->func, card->ioport,
368 packet->buffer, packet->nb);
369 if (ret)
370 goto release;
371 release:
372 sdio_release_host(card->func);
373
374 kfree(packet);
375 }
376
377 lbs_deb_leave(LBS_DEB_SDIO);
378 }
379
380 /********************************************************************/
381 /* Firmware */
382 /********************************************************************/
383
384 static int if_sdio_prog_helper(struct if_sdio_card *card)
385 {
386 int ret;
387 u8 status;
388 const struct firmware *fw;
389 unsigned long timeout;
390 u8 *chunk_buffer;
391 u32 chunk_size;
392 const u8 *firmware;
393 size_t size;
394
395 lbs_deb_enter(LBS_DEB_SDIO);
396
397 ret = request_firmware(&fw, card->helper, &card->func->dev);
398 if (ret) {
399 lbs_pr_err("can't load helper firmware\n");
400 goto out;
401 }
402
403 chunk_buffer = kzalloc(64, GFP_KERNEL);
404 if (!chunk_buffer) {
405 ret = -ENOMEM;
406 goto release_fw;
407 }
408
409 sdio_claim_host(card->func);
410
411 ret = sdio_set_block_size(card->func, 32);
412 if (ret)
413 goto release;
414
415 firmware = fw->data;
416 size = fw->size;
417
418 while (size) {
419 timeout = jiffies + HZ;
420 while (1) {
421 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
422 if (ret)
423 goto release;
424 if ((status & IF_SDIO_IO_RDY) &&
425 (status & IF_SDIO_DL_RDY))
426 break;
427 if (time_after(jiffies, timeout)) {
428 ret = -ETIMEDOUT;
429 goto release;
430 }
431 mdelay(1);
432 }
433
434 chunk_size = min(size, (size_t)60);
435
436 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
437 memcpy(chunk_buffer + 4, firmware, chunk_size);
438 /*
439 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
440 */
441 ret = sdio_writesb(card->func, card->ioport,
442 chunk_buffer, 64);
443 if (ret)
444 goto release;
445
446 firmware += chunk_size;
447 size -= chunk_size;
448 }
449
450 /* an empty block marks the end of the transfer */
451 memset(chunk_buffer, 0, 4);
452 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
453 if (ret)
454 goto release;
455
456 lbs_deb_sdio("waiting for helper to boot...\n");
457
458 /* wait for the helper to boot by looking at the size register */
459 timeout = jiffies + HZ;
460 while (1) {
461 u16 req_size;
462
463 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
464 if (ret)
465 goto release;
466
467 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
468 if (ret)
469 goto release;
470
471 if (req_size != 0)
472 break;
473
474 if (time_after(jiffies, timeout)) {
475 ret = -ETIMEDOUT;
476 goto release;
477 }
478
479 msleep(10);
480 }
481
482 ret = 0;
483
484 release:
485 sdio_set_block_size(card->func, 0);
486 sdio_release_host(card->func);
487 kfree(chunk_buffer);
488 release_fw:
489 release_firmware(fw);
490
491 out:
492 if (ret)
493 lbs_pr_err("failed to load helper firmware\n");
494
495 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
496
497 return ret;
498 }
499
500 static int if_sdio_prog_real(struct if_sdio_card *card)
501 {
502 int ret;
503 u8 status;
504 const struct firmware *fw;
505 unsigned long timeout;
506 u8 *chunk_buffer;
507 u32 chunk_size;
508 const u8 *firmware;
509 size_t size, req_size;
510
511 lbs_deb_enter(LBS_DEB_SDIO);
512
513 ret = request_firmware(&fw, card->firmware, &card->func->dev);
514 if (ret) {
515 lbs_pr_err("can't load firmware\n");
516 goto out;
517 }
518
519 chunk_buffer = kzalloc(512, GFP_KERNEL);
520 if (!chunk_buffer) {
521 ret = -ENOMEM;
522 goto release_fw;
523 }
524
525 sdio_claim_host(card->func);
526
527 ret = sdio_set_block_size(card->func, 32);
528 if (ret)
529 goto release;
530
531 firmware = fw->data;
532 size = fw->size;
533
534 while (size) {
535 timeout = jiffies + HZ;
536 while (1) {
537 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
538 if (ret)
539 goto release;
540 if ((status & IF_SDIO_IO_RDY) &&
541 (status & IF_SDIO_DL_RDY))
542 break;
543 if (time_after(jiffies, timeout)) {
544 ret = -ETIMEDOUT;
545 goto release;
546 }
547 mdelay(1);
548 }
549
550 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
551 if (ret)
552 goto release;
553
554 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
555 if (ret)
556 goto release;
557 /*
558 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
559 */
560 if (req_size == 0) {
561 lbs_deb_sdio("firmware helper gave up early\n");
562 ret = -EIO;
563 goto release;
564 }
565
566 if (req_size & 0x01) {
567 lbs_deb_sdio("firmware helper signalled error\n");
568 ret = -EIO;
569 goto release;
570 }
571
572 if (req_size > size)
573 req_size = size;
574
575 while (req_size) {
576 chunk_size = min(req_size, (size_t)512);
577
578 memcpy(chunk_buffer, firmware, chunk_size);
579 /*
580 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
581 chunk_size, (chunk_size + 31) / 32 * 32);
582 */
583 ret = sdio_writesb(card->func, card->ioport,
584 chunk_buffer, (chunk_size + 31) / 32 * 32);
585 if (ret)
586 goto release;
587
588 firmware += chunk_size;
589 size -= chunk_size;
590 req_size -= chunk_size;
591 }
592 }
593
594 ret = 0;
595
596 lbs_deb_sdio("waiting for firmware to boot...\n");
597
598 /* wait for the firmware to boot */
599 timeout = jiffies + HZ;
600 while (1) {
601 u16 scratch;
602
603 scratch = if_sdio_read_scratch(card, &ret);
604 if (ret)
605 goto release;
606
607 if (scratch == IF_SDIO_FIRMWARE_OK)
608 break;
609
610 if (time_after(jiffies, timeout)) {
611 ret = -ETIMEDOUT;
612 goto release;
613 }
614
615 msleep(10);
616 }
617
618 ret = 0;
619
620 release:
621 sdio_set_block_size(card->func, 0);
622 sdio_release_host(card->func);
623 kfree(chunk_buffer);
624 release_fw:
625 release_firmware(fw);
626
627 out:
628 if (ret)
629 lbs_pr_err("failed to load firmware\n");
630
631 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
632
633 return ret;
634 }
635
636 static int if_sdio_prog_firmware(struct if_sdio_card *card)
637 {
638 int ret;
639 u16 scratch;
640
641 lbs_deb_enter(LBS_DEB_SDIO);
642
643 sdio_claim_host(card->func);
644 scratch = if_sdio_read_scratch(card, &ret);
645 sdio_release_host(card->func);
646
647 if (ret)
648 goto out;
649
650 if (scratch == IF_SDIO_FIRMWARE_OK) {
651 lbs_deb_sdio("firmware already loaded\n");
652 goto success;
653 }
654
655 ret = if_sdio_prog_helper(card);
656 if (ret)
657 goto out;
658
659 ret = if_sdio_prog_real(card);
660 if (ret)
661 goto out;
662
663 success:
664 ret = 0;
665
666 out:
667 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
668
669 return ret;
670 }
671
672 /*******************************************************************/
673 /* Libertas callbacks */
674 /*******************************************************************/
675
676 static int if_sdio_host_to_card(struct lbs_private *priv,
677 u8 type, u8 *buf, u16 nb)
678 {
679 int ret;
680 struct if_sdio_card *card;
681 struct if_sdio_packet *packet, *cur;
682 u16 size;
683 unsigned long flags;
684
685 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
686
687 card = priv->card;
688
689 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
690 ret = -EINVAL;
691 goto out;
692 }
693
694 /*
695 * The transfer must be in one transaction or the firmware
696 * goes suicidal. There's no way to guarantee that for all
697 * controllers, but we can at least try.
698 */
699 size = sdio_align_size(card->func, nb + 4);
700
701 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
702 GFP_ATOMIC);
703 if (!packet) {
704 ret = -ENOMEM;
705 goto out;
706 }
707
708 packet->next = NULL;
709 packet->nb = size;
710
711 /*
712 * SDIO specific header.
713 */
714 packet->buffer[0] = (nb + 4) & 0xff;
715 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
716 packet->buffer[2] = type;
717 packet->buffer[3] = 0;
718
719 memcpy(packet->buffer + 4, buf, nb);
720
721 spin_lock_irqsave(&card->lock, flags);
722
723 if (!card->packets)
724 card->packets = packet;
725 else {
726 cur = card->packets;
727 while (cur->next)
728 cur = cur->next;
729 cur->next = packet;
730 }
731
732 switch (type) {
733 case MVMS_CMD:
734 priv->dnld_sent = DNLD_CMD_SENT;
735 break;
736 case MVMS_DAT:
737 priv->dnld_sent = DNLD_DATA_SENT;
738 break;
739 default:
740 lbs_deb_sdio("unknown packet type %d\n", (int)type);
741 }
742
743 spin_unlock_irqrestore(&card->lock, flags);
744
745 schedule_work(&card->packet_worker);
746
747 ret = 0;
748
749 out:
750 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
751
752 return ret;
753 }
754
755 /*******************************************************************/
756 /* SDIO callbacks */
757 /*******************************************************************/
758
759 static void if_sdio_interrupt(struct sdio_func *func)
760 {
761 int ret;
762 struct if_sdio_card *card;
763 u8 cause;
764
765 lbs_deb_enter(LBS_DEB_SDIO);
766
767 card = sdio_get_drvdata(func);
768
769 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
770 if (ret)
771 goto out;
772
773 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
774
775 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
776 if (ret)
777 goto out;
778
779 /*
780 * Ignore the define name, this really means the card has
781 * successfully received the command.
782 */
783 if (cause & IF_SDIO_H_INT_DNLD)
784 lbs_host_to_card_done(card->priv);
785
786
787 if (cause & IF_SDIO_H_INT_UPLD) {
788 ret = if_sdio_card_to_host(card);
789 if (ret)
790 goto out;
791 }
792
793 ret = 0;
794
795 out:
796 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
797 }
798
799 static int if_sdio_probe(struct sdio_func *func,
800 const struct sdio_device_id *id)
801 {
802 struct if_sdio_card *card;
803 struct lbs_private *priv;
804 int ret, i;
805 unsigned int model;
806 struct if_sdio_packet *packet;
807
808 lbs_deb_enter(LBS_DEB_SDIO);
809
810 for (i = 0;i < func->card->num_info;i++) {
811 if (sscanf(func->card->info[i],
812 "802.11 SDIO ID: %x", &model) == 1)
813 break;
814 if (sscanf(func->card->info[i],
815 "ID: %x", &model) == 1)
816 break;
817 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
818 model = 4;
819 break;
820 }
821 }
822
823 if (i == func->card->num_info) {
824 lbs_pr_err("unable to identify card model\n");
825 return -ENODEV;
826 }
827
828 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
829 if (!card)
830 return -ENOMEM;
831
832 card->func = func;
833 card->model = model;
834 spin_lock_init(&card->lock);
835 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
836
837 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
838 if (card->model == if_sdio_models[i].model)
839 break;
840 }
841
842 if (i == ARRAY_SIZE(if_sdio_models)) {
843 lbs_pr_err("unkown card model 0x%x\n", card->model);
844 ret = -ENODEV;
845 goto free;
846 }
847
848 card->helper = if_sdio_models[i].helper;
849 card->firmware = if_sdio_models[i].firmware;
850
851 if (lbs_helper_name) {
852 lbs_deb_sdio("overriding helper firmware: %s\n",
853 lbs_helper_name);
854 card->helper = lbs_helper_name;
855 }
856
857 if (lbs_fw_name) {
858 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
859 card->firmware = lbs_fw_name;
860 }
861
862 sdio_claim_host(func);
863
864 ret = sdio_enable_func(func);
865 if (ret)
866 goto release;
867
868 ret = sdio_claim_irq(func, if_sdio_interrupt);
869 if (ret)
870 goto disable;
871
872 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
873 if (ret)
874 goto release_int;
875
876 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
877 if (ret)
878 goto release_int;
879
880 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
881 if (ret)
882 goto release_int;
883
884 sdio_release_host(func);
885
886 sdio_set_drvdata(func, card);
887
888 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
889 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
890 func->class, func->vendor, func->device,
891 model, (unsigned)card->ioport);
892
893 ret = if_sdio_prog_firmware(card);
894 if (ret)
895 goto reclaim;
896
897 priv = lbs_add_card(card, &func->dev);
898 if (!priv) {
899 ret = -ENOMEM;
900 goto reclaim;
901 }
902
903 card->priv = priv;
904
905 priv->card = card;
906 priv->hw_host_to_card = if_sdio_host_to_card;
907
908 priv->fw_ready = 1;
909
910 /*
911 * Enable interrupts now that everything is set up
912 */
913 sdio_claim_host(func);
914 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
915 sdio_release_host(func);
916 if (ret)
917 goto reclaim;
918
919 ret = lbs_start_card(priv);
920 if (ret)
921 goto err_activate_card;
922
923 out:
924 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
925
926 return ret;
927
928 err_activate_card:
929 flush_scheduled_work();
930 free_netdev(priv->dev);
931 kfree(priv);
932 reclaim:
933 sdio_claim_host(func);
934 release_int:
935 sdio_release_irq(func);
936 disable:
937 sdio_disable_func(func);
938 release:
939 sdio_release_host(func);
940 free:
941 while (card->packets) {
942 packet = card->packets;
943 card->packets = card->packets->next;
944 kfree(packet);
945 }
946
947 kfree(card);
948
949 goto out;
950 }
951
952 static void if_sdio_remove(struct sdio_func *func)
953 {
954 struct if_sdio_card *card;
955 struct if_sdio_packet *packet;
956
957 lbs_deb_enter(LBS_DEB_SDIO);
958
959 card = sdio_get_drvdata(func);
960
961 card->priv->surpriseremoved = 1;
962
963 lbs_deb_sdio("call remove card\n");
964 lbs_stop_card(card->priv);
965 lbs_remove_card(card->priv);
966
967 flush_scheduled_work();
968
969 sdio_claim_host(func);
970 sdio_release_irq(func);
971 sdio_disable_func(func);
972 sdio_release_host(func);
973
974 while (card->packets) {
975 packet = card->packets;
976 card->packets = card->packets->next;
977 kfree(packet);
978 }
979
980 kfree(card);
981
982 lbs_deb_leave(LBS_DEB_SDIO);
983 }
984
985 static struct sdio_driver if_sdio_driver = {
986 .name = "libertas_sdio",
987 .id_table = if_sdio_ids,
988 .probe = if_sdio_probe,
989 .remove = if_sdio_remove,
990 };
991
992 /*******************************************************************/
993 /* Module functions */
994 /*******************************************************************/
995
996 static int __init if_sdio_init_module(void)
997 {
998 int ret = 0;
999
1000 lbs_deb_enter(LBS_DEB_SDIO);
1001
1002 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1003 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1004
1005 ret = sdio_register_driver(&if_sdio_driver);
1006
1007 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1008
1009 return ret;
1010 }
1011
1012 static void __exit if_sdio_exit_module(void)
1013 {
1014 lbs_deb_enter(LBS_DEB_SDIO);
1015
1016 sdio_unregister_driver(&if_sdio_driver);
1017
1018 lbs_deb_leave(LBS_DEB_SDIO);
1019 }
1020
1021 module_init(if_sdio_init_module);
1022 module_exit(if_sdio_exit_module);
1023
1024 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1025 MODULE_AUTHOR("Pierre Ossman");
1026 MODULE_LICENSE("GPL");
Linux with added FPC-III support