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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / net / wireless / libertas / if_sdio.c
blob51f664bbee9d281d524f6e4881f98912bd09684d
1 /*
2 * linux/drivers/net/wireless/libertas/if_sdio.c
3 *
4 * Copyright 2007 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.
270 */
271 chunk = size;
272 if ((chunk > card->func->cur_blksize) || (chunk > 512)) {
273 chunk = (chunk + card->func->cur_blksize - 1) /
274 card->func->cur_blksize * card->func->cur_blksize;
275 }
276
277 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
278 if (ret)
279 goto out;
280
281 chunk = card->buffer[0] | (card->buffer[1] << 8);
282 type = card->buffer[2] | (card->buffer[3] << 8);
283
284 lbs_deb_sdio("packet of type %d and size %d bytes\n",
285 (int)type, (int)chunk);
286
287 if (chunk > size) {
288 lbs_deb_sdio("packet fragment (%d > %d)\n",
289 (int)chunk, (int)size);
290 ret = -EINVAL;
291 goto out;
292 }
293
294 if (chunk < size) {
295 lbs_deb_sdio("packet fragment (%d < %d)\n",
296 (int)chunk, (int)size);
297 }
298
299 switch (type) {
300 case MVMS_CMD:
301 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
302 if (ret)
303 goto out;
304 break;
305 case MVMS_DAT:
306 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
307 if (ret)
308 goto out;
309 break;
310 case MVMS_EVENT:
311 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
312 if (ret)
313 goto out;
314 break;
315 default:
316 lbs_deb_sdio("invalid type (%d) from firmware\n",
317 (int)type);
318 ret = -EINVAL;
319 goto out;
320 }
321
322 out:
323 if (ret)
324 lbs_pr_err("problem fetching packet from firmware\n");
325
326 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
327
328 return ret;
329 }
330
331 static void if_sdio_host_to_card_worker(struct work_struct *work)
332 {
333 struct if_sdio_card *card;
334 struct if_sdio_packet *packet;
335 unsigned long timeout;
336 u8 status;
337 int ret;
338 unsigned long flags;
339
340 lbs_deb_enter(LBS_DEB_SDIO);
341
342 card = container_of(work, struct if_sdio_card, packet_worker);
343
344 while (1) {
345 spin_lock_irqsave(&card->lock, flags);
346 packet = card->packets;
347 if (packet)
348 card->packets = packet->next;
349 spin_unlock_irqrestore(&card->lock, flags);
350
351 if (!packet)
352 break;
353
354 sdio_claim_host(card->func);
355
356 timeout = jiffies + HZ;
357 while (1) {
358 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
359 if (ret)
360 goto release;
361 if (status & IF_SDIO_IO_RDY)
362 break;
363 if (time_after(jiffies, timeout)) {
364 ret = -ETIMEDOUT;
365 goto release;
366 }
367 mdelay(1);
368 }
369
370 ret = sdio_writesb(card->func, card->ioport,
371 packet->buffer, packet->nb);
372 if (ret)
373 goto release;
374 release:
375 sdio_release_host(card->func);
376
377 kfree(packet);
378 }
379
380 lbs_deb_leave(LBS_DEB_SDIO);
381 }
382
383 /********************************************************************/
384 /* Firmware */
385 /********************************************************************/
386
387 static int if_sdio_prog_helper(struct if_sdio_card *card)
388 {
389 int ret;
390 u8 status;
391 const struct firmware *fw;
392 unsigned long timeout;
393 u8 *chunk_buffer;
394 u32 chunk_size;
395 u8 *firmware;
396 size_t size;
397
398 lbs_deb_enter(LBS_DEB_SDIO);
399
400 ret = request_firmware(&fw, card->helper, &card->func->dev);
401 if (ret) {
402 lbs_pr_err("can't load helper firmware\n");
403 goto out;
404 }
405
406 chunk_buffer = kzalloc(64, GFP_KERNEL);
407 if (!chunk_buffer) {
408 ret = -ENOMEM;
409 goto release_fw;
410 }
411
412 sdio_claim_host(card->func);
413
414 ret = sdio_set_block_size(card->func, 32);
415 if (ret)
416 goto release;
417
418 firmware = fw->data;
419 size = fw->size;
420
421 while (size) {
422 timeout = jiffies + HZ;
423 while (1) {
424 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
425 if (ret)
426 goto release;
427 if ((status & IF_SDIO_IO_RDY) &&
428 (status & IF_SDIO_DL_RDY))
429 break;
430 if (time_after(jiffies, timeout)) {
431 ret = -ETIMEDOUT;
432 goto release;
433 }
434 mdelay(1);
435 }
436
437 chunk_size = min(size, (size_t)60);
438
439 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
440 memcpy(chunk_buffer + 4, firmware, chunk_size);
441 /*
442 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
443 */
444 ret = sdio_writesb(card->func, card->ioport,
445 chunk_buffer, 64);
446 if (ret)
447 goto release;
448
449 firmware += chunk_size;
450 size -= chunk_size;
451 }
452
453 /* an empty block marks the end of the transfer */
454 memset(chunk_buffer, 0, 4);
455 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
456 if (ret)
457 goto release;
458
459 lbs_deb_sdio("waiting for helper to boot...\n");
460
461 /* wait for the helper to boot by looking at the size register */
462 timeout = jiffies + HZ;
463 while (1) {
464 u16 req_size;
465
466 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
467 if (ret)
468 goto release;
469
470 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
471 if (ret)
472 goto release;
473
474 if (req_size != 0)
475 break;
476
477 if (time_after(jiffies, timeout)) {
478 ret = -ETIMEDOUT;
479 goto release;
480 }
481
482 msleep(10);
483 }
484
485 ret = 0;
486
487 release:
488 sdio_set_block_size(card->func, 0);
489 sdio_release_host(card->func);
490 kfree(chunk_buffer);
491 release_fw:
492 release_firmware(fw);
493
494 out:
495 if (ret)
496 lbs_pr_err("failed to load helper firmware\n");
497
498 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
499
500 return ret;
501 }
502
503 static int if_sdio_prog_real(struct if_sdio_card *card)
504 {
505 int ret;
506 u8 status;
507 const struct firmware *fw;
508 unsigned long timeout;
509 u8 *chunk_buffer;
510 u32 chunk_size;
511 u8 *firmware;
512 size_t size, req_size;
513
514 lbs_deb_enter(LBS_DEB_SDIO);
515
516 ret = request_firmware(&fw, card->firmware, &card->func->dev);
517 if (ret) {
518 lbs_pr_err("can't load firmware\n");
519 goto out;
520 }
521
522 chunk_buffer = kzalloc(512, GFP_KERNEL);
523 if (!chunk_buffer) {
524 ret = -ENOMEM;
525 goto release_fw;
526 }
527
528 sdio_claim_host(card->func);
529
530 ret = sdio_set_block_size(card->func, 32);
531 if (ret)
532 goto release;
533
534 firmware = fw->data;
535 size = fw->size;
536
537 while (size) {
538 timeout = jiffies + HZ;
539 while (1) {
540 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
541 if (ret)
542 goto release;
543 if ((status & IF_SDIO_IO_RDY) &&
544 (status & IF_SDIO_DL_RDY))
545 break;
546 if (time_after(jiffies, timeout)) {
547 ret = -ETIMEDOUT;
548 goto release;
549 }
550 mdelay(1);
551 }
552
553 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
554 if (ret)
555 goto release;
556
557 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
558 if (ret)
559 goto release;
560 /*
561 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
562 */
563 if (req_size == 0) {
564 lbs_deb_sdio("firmware helper gave up early\n");
565 ret = -EIO;
566 goto release;
567 }
568
569 if (req_size & 0x01) {
570 lbs_deb_sdio("firmware helper signalled error\n");
571 ret = -EIO;
572 goto release;
573 }
574
575 if (req_size > size)
576 req_size = size;
577
578 while (req_size) {
579 chunk_size = min(req_size, (size_t)512);
580
581 memcpy(chunk_buffer, firmware, chunk_size);
582 /*
583 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
584 chunk_size, (chunk_size + 31) / 32 * 32);
585 */
586 ret = sdio_writesb(card->func, card->ioport,
587 chunk_buffer, (chunk_size + 31) / 32 * 32);
588 if (ret)
589 goto release;
590
591 firmware += chunk_size;
592 size -= chunk_size;
593 req_size -= chunk_size;
594 }
595 }
596
597 ret = 0;
598
599 lbs_deb_sdio("waiting for firmware to boot...\n");
600
601 /* wait for the firmware to boot */
602 timeout = jiffies + HZ;
603 while (1) {
604 u16 scratch;
605
606 scratch = if_sdio_read_scratch(card, &ret);
607 if (ret)
608 goto release;
609
610 if (scratch == IF_SDIO_FIRMWARE_OK)
611 break;
612
613 if (time_after(jiffies, timeout)) {
614 ret = -ETIMEDOUT;
615 goto release;
616 }
617
618 msleep(10);
619 }
620
621 ret = 0;
622
623 release:
624 sdio_set_block_size(card->func, 0);
625 sdio_release_host(card->func);
626 kfree(chunk_buffer);
627 release_fw:
628 release_firmware(fw);
629
630 out:
631 if (ret)
632 lbs_pr_err("failed to load firmware\n");
633
634 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
635
636 return ret;
637 }
638
639 static int if_sdio_prog_firmware(struct if_sdio_card *card)
640 {
641 int ret;
642 u16 scratch;
643
644 lbs_deb_enter(LBS_DEB_SDIO);
645
646 sdio_claim_host(card->func);
647 scratch = if_sdio_read_scratch(card, &ret);
648 sdio_release_host(card->func);
649
650 if (ret)
651 goto out;
652
653 if (scratch == IF_SDIO_FIRMWARE_OK) {
654 lbs_deb_sdio("firmware already loaded\n");
655 goto success;
656 }
657
658 ret = if_sdio_prog_helper(card);
659 if (ret)
660 goto out;
661
662 ret = if_sdio_prog_real(card);
663 if (ret)
664 goto out;
665
666 success:
667 ret = 0;
668
669 out:
670 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
671
672 return ret;
673 }
674
675 /*******************************************************************/
676 /* Libertas callbacks */
677 /*******************************************************************/
678
679 static int if_sdio_host_to_card(struct lbs_private *priv,
680 u8 type, u8 *buf, u16 nb)
681 {
682 int ret;
683 struct if_sdio_card *card;
684 struct if_sdio_packet *packet, *cur;
685 u16 size;
686 unsigned long flags;
687
688 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
689
690 card = priv->card;
691
692 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
693 ret = -EINVAL;
694 goto out;
695 }
696
697 /*
698 * The transfer must be in one transaction or the firmware
699 * goes suicidal.
700 */
701 size = nb + 4;
702 if ((size > card->func->cur_blksize) || (size > 512)) {
703 size = (size + card->func->cur_blksize - 1) /
704 card->func->cur_blksize * card->func->cur_blksize;
705 }
706
707 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
708 GFP_ATOMIC);
709 if (!packet) {
710 ret = -ENOMEM;
711 goto out;
712 }
713
714 packet->next = NULL;
715 packet->nb = size;
716
717 /*
718 * SDIO specific header.
719 */
720 packet->buffer[0] = (nb + 4) & 0xff;
721 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
722 packet->buffer[2] = type;
723 packet->buffer[3] = 0;
724
725 memcpy(packet->buffer + 4, buf, nb);
726
727 spin_lock_irqsave(&card->lock, flags);
728
729 if (!card->packets)
730 card->packets = packet;
731 else {
732 cur = card->packets;
733 while (cur->next)
734 cur = cur->next;
735 cur->next = packet;
736 }
737
738 switch (type) {
739 case MVMS_CMD:
740 priv->dnld_sent = DNLD_CMD_SENT;
741 break;
742 case MVMS_DAT:
743 priv->dnld_sent = DNLD_DATA_SENT;
744 break;
745 default:
746 lbs_deb_sdio("unknown packet type %d\n", (int)type);
747 }
748
749 spin_unlock_irqrestore(&card->lock, flags);
750
751 schedule_work(&card->packet_worker);
752
753 ret = 0;
754
755 out:
756 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
757
758 return ret;
759 }
760
761 /*******************************************************************/
762 /* SDIO callbacks */
763 /*******************************************************************/
764
765 static void if_sdio_interrupt(struct sdio_func *func)
766 {
767 int ret;
768 struct if_sdio_card *card;
769 u8 cause;
770
771 lbs_deb_enter(LBS_DEB_SDIO);
772
773 card = sdio_get_drvdata(func);
774
775 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
776 if (ret)
777 goto out;
778
779 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
780
781 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
782 if (ret)
783 goto out;
784
785 /*
786 * Ignore the define name, this really means the card has
787 * successfully received the command.
788 */
789 if (cause & IF_SDIO_H_INT_DNLD)
790 lbs_host_to_card_done(card->priv);
791
792
793 if (cause & IF_SDIO_H_INT_UPLD) {
794 ret = if_sdio_card_to_host(card);
795 if (ret)
796 goto out;
797 }
798
799 ret = 0;
800
801 out:
802 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
803 }
804
805 static int if_sdio_probe(struct sdio_func *func,
806 const struct sdio_device_id *id)
807 {
808 struct if_sdio_card *card;
809 struct lbs_private *priv;
810 int ret, i;
811 unsigned int model;
812 struct if_sdio_packet *packet;
813
814 lbs_deb_enter(LBS_DEB_SDIO);
815
816 for (i = 0;i < func->card->num_info;i++) {
817 if (sscanf(func->card->info[i],
818 "802.11 SDIO ID: %x", &model) == 1)
819 break;
820 if (sscanf(func->card->info[i],
821 "ID: %x", &model) == 1)
822 break;
823 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
824 model = 4;
825 break;
826 }
827 }
828
829 if (i == func->card->num_info) {
830 lbs_pr_err("unable to identify card model\n");
831 return -ENODEV;
832 }
833
834 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
835 if (!card)
836 return -ENOMEM;
837
838 card->func = func;
839 card->model = model;
840 spin_lock_init(&card->lock);
841 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
842
843 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
844 if (card->model == if_sdio_models[i].model)
845 break;
846 }
847
848 if (i == ARRAY_SIZE(if_sdio_models)) {
849 lbs_pr_err("unkown card model 0x%x\n", card->model);
850 ret = -ENODEV;
851 goto free;
852 }
853
854 card->helper = if_sdio_models[i].helper;
855 card->firmware = if_sdio_models[i].firmware;
856
857 if (lbs_helper_name) {
858 lbs_deb_sdio("overriding helper firmware: %s\n",
859 lbs_helper_name);
860 card->helper = lbs_helper_name;
861 }
862
863 if (lbs_fw_name) {
864 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
865 card->firmware = lbs_fw_name;
866 }
867
868 sdio_claim_host(func);
869
870 ret = sdio_enable_func(func);
871 if (ret)
872 goto release;
873
874 ret = sdio_claim_irq(func, if_sdio_interrupt);
875 if (ret)
876 goto disable;
877
878 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
879 if (ret)
880 goto release_int;
881
882 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
883 if (ret)
884 goto release_int;
885
886 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
887 if (ret)
888 goto release_int;
889
890 sdio_release_host(func);
891
892 sdio_set_drvdata(func, card);
893
894 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
895 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
896 func->class, func->vendor, func->device,
897 model, (unsigned)card->ioport);
898
899 ret = if_sdio_prog_firmware(card);
900 if (ret)
901 goto reclaim;
902
903 priv = lbs_add_card(card, &func->dev);
904 if (!priv) {
905 ret = -ENOMEM;
906 goto reclaim;
907 }
908
909 card->priv = priv;
910
911 priv->card = card;
912 priv->hw_host_to_card = if_sdio_host_to_card;
913
914 priv->fw_ready = 1;
915
916 /*
917 * Enable interrupts now that everything is set up
918 */
919 sdio_claim_host(func);
920 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
921 sdio_release_host(func);
922 if (ret)
923 goto reclaim;
924
925 ret = lbs_start_card(priv);
926 if (ret)
927 goto err_activate_card;
928
929 out:
930 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
931
932 return ret;
933
934 err_activate_card:
935 flush_scheduled_work();
936 free_netdev(priv->dev);
937 kfree(priv);
938 reclaim:
939 sdio_claim_host(func);
940 release_int:
941 sdio_release_irq(func);
942 disable:
943 sdio_disable_func(func);
944 release:
945 sdio_release_host(func);
946 free:
947 while (card->packets) {
948 packet = card->packets;
949 card->packets = card->packets->next;
950 kfree(packet);
951 }
952
953 kfree(card);
954
955 goto out;
956 }
957
958 static void if_sdio_remove(struct sdio_func *func)
959 {
960 struct if_sdio_card *card;
961 struct if_sdio_packet *packet;
962
963 lbs_deb_enter(LBS_DEB_SDIO);
964
965 card = sdio_get_drvdata(func);
966
967 card->priv->surpriseremoved = 1;
968
969 lbs_deb_sdio("call remove card\n");
970 lbs_stop_card(card->priv);
971 lbs_remove_card(card->priv);
972
973 flush_scheduled_work();
974
975 sdio_claim_host(func);
976 sdio_release_irq(func);
977 sdio_disable_func(func);
978 sdio_release_host(func);
979
980 while (card->packets) {
981 packet = card->packets;
982 card->packets = card->packets->next;
983 kfree(packet);
984 }
985
986 kfree(card);
987
988 lbs_deb_leave(LBS_DEB_SDIO);
989 }
990
991 static struct sdio_driver if_sdio_driver = {
992 .name = "libertas_sdio",
993 .id_table = if_sdio_ids,
994 .probe = if_sdio_probe,
995 .remove = if_sdio_remove,
996 };
997
998 /*******************************************************************/
999 /* Module functions */
1000 /*******************************************************************/
1001
1002 static int __init if_sdio_init_module(void)
1003 {
1004 int ret = 0;
1005
1006 lbs_deb_enter(LBS_DEB_SDIO);
1007
1008 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1009 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1010
1011 ret = sdio_register_driver(&if_sdio_driver);
1012
1013 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1014
1015 return ret;
1016 }
1017
1018 static void __exit if_sdio_exit_module(void)
1019 {
1020 lbs_deb_enter(LBS_DEB_SDIO);
1021
1022 sdio_unregister_driver(&if_sdio_driver);
1023
1024 lbs_deb_leave(LBS_DEB_SDIO);
1025 }
1026
1027 module_init(if_sdio_init_module);
1028 module_exit(if_sdio_exit_module);
1029
1030 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1031 MODULE_AUTHOR("Pierre Ossman");
1032 MODULE_LICENSE("GPL");
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