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[MMC] sdhci: Test for invalid block size
[deliverable/linux.git] / drivers / mmc / sdhci.c
1 /*
2 * linux/drivers/mmc/sdhci.c - Secure Digital Host Controller Interface driver
3 *
4 * Copyright (C) 2005-2006 Pierre Ossman, All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/delay.h>
12 #include <linux/highmem.h>
13 #include <linux/pci.h>
14 #include <linux/dma-mapping.h>
15
16 #include <linux/mmc/host.h>
17 #include <linux/mmc/protocol.h>
18
19 #include <asm/scatterlist.h>
20
21 #include "sdhci.h"
22
23 #define DRIVER_NAME "sdhci"
24 #define DRIVER_VERSION "0.11"
25
26 #define BUGMAIL "<sdhci-devel@list.drzeus.cx>"
27
28 #define DBG(f, x...) \
29 pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x)
30
31 static const struct pci_device_id pci_ids[] __devinitdata = {
32 /* handle any SD host controller */
33 {PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)},
34 { /* end: all zeroes */ },
35 };
36
37 MODULE_DEVICE_TABLE(pci, pci_ids);
38
39 static void sdhci_prepare_data(struct sdhci_host *, struct mmc_data *);
40 static void sdhci_finish_data(struct sdhci_host *);
41
42 static void sdhci_send_command(struct sdhci_host *, struct mmc_command *);
43 static void sdhci_finish_command(struct sdhci_host *);
44
45 static void sdhci_dumpregs(struct sdhci_host *host)
46 {
47 printk(KERN_DEBUG DRIVER_NAME ": ============== REGISTER DUMP ==============\n");
48
49 printk(KERN_DEBUG DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n",
50 readl(host->ioaddr + SDHCI_DMA_ADDRESS),
51 readw(host->ioaddr + SDHCI_HOST_VERSION));
52 printk(KERN_DEBUG DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
53 readw(host->ioaddr + SDHCI_BLOCK_SIZE),
54 readw(host->ioaddr + SDHCI_BLOCK_COUNT));
55 printk(KERN_DEBUG DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
56 readl(host->ioaddr + SDHCI_ARGUMENT),
57 readw(host->ioaddr + SDHCI_TRANSFER_MODE));
58 printk(KERN_DEBUG DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n",
59 readl(host->ioaddr + SDHCI_PRESENT_STATE),
60 readb(host->ioaddr + SDHCI_HOST_CONTROL));
61 printk(KERN_DEBUG DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n",
62 readb(host->ioaddr + SDHCI_POWER_CONTROL),
63 readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL));
64 printk(KERN_DEBUG DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n",
65 readb(host->ioaddr + SDHCI_WALK_UP_CONTROL),
66 readw(host->ioaddr + SDHCI_CLOCK_CONTROL));
67 printk(KERN_DEBUG DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n",
68 readb(host->ioaddr + SDHCI_TIMEOUT_CONTROL),
69 readl(host->ioaddr + SDHCI_INT_STATUS));
70 printk(KERN_DEBUG DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
71 readl(host->ioaddr + SDHCI_INT_ENABLE),
72 readl(host->ioaddr + SDHCI_SIGNAL_ENABLE));
73 printk(KERN_DEBUG DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
74 readw(host->ioaddr + SDHCI_ACMD12_ERR),
75 readw(host->ioaddr + SDHCI_SLOT_INT_STATUS));
76 printk(KERN_DEBUG DRIVER_NAME ": Caps: 0x%08x | Max curr: 0x%08x\n",
77 readl(host->ioaddr + SDHCI_CAPABILITIES),
78 readl(host->ioaddr + SDHCI_MAX_CURRENT));
79
80 printk(KERN_DEBUG DRIVER_NAME ": ===========================================\n");
81 }
82
83 /*****************************************************************************\
84 * *
85 * Low level functions *
86 * *
87 \*****************************************************************************/
88
89 static void sdhci_reset(struct sdhci_host *host, u8 mask)
90 {
91 unsigned long timeout;
92
93 writeb(mask, host->ioaddr + SDHCI_SOFTWARE_RESET);
94
95 if (mask & SDHCI_RESET_ALL)
96 host->clock = 0;
97
98 /* Wait max 100 ms */
99 timeout = 100;
100
101 /* hw clears the bit when it's done */
102 while (readb(host->ioaddr + SDHCI_SOFTWARE_RESET) & mask) {
103 if (timeout == 0) {
104 printk(KERN_ERR "%s: Reset 0x%x never completed. "
105 "Please report this to " BUGMAIL ".\n",
106 mmc_hostname(host->mmc), (int)mask);
107 sdhci_dumpregs(host);
108 return;
109 }
110 timeout--;
111 mdelay(1);
112 }
113 }
114
115 static void sdhci_init(struct sdhci_host *host)
116 {
117 u32 intmask;
118
119 sdhci_reset(host, SDHCI_RESET_ALL);
120
121 intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
122 SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX |
123 SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT |
124 SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT |
125 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL |
126 SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE;
127
128 writel(intmask, host->ioaddr + SDHCI_INT_ENABLE);
129 writel(intmask, host->ioaddr + SDHCI_SIGNAL_ENABLE);
130 }
131
132 static void sdhci_activate_led(struct sdhci_host *host)
133 {
134 u8 ctrl;
135
136 ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
137 ctrl |= SDHCI_CTRL_LED;
138 writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
139 }
140
141 static void sdhci_deactivate_led(struct sdhci_host *host)
142 {
143 u8 ctrl;
144
145 ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
146 ctrl &= ~SDHCI_CTRL_LED;
147 writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
148 }
149
150 /*****************************************************************************\
151 * *
152 * Core functions *
153 * *
154 \*****************************************************************************/
155
156 static inline char* sdhci_kmap_sg(struct sdhci_host* host)
157 {
158 host->mapped_sg = kmap_atomic(host->cur_sg->page, KM_BIO_SRC_IRQ);
159 return host->mapped_sg + host->cur_sg->offset;
160 }
161
162 static inline void sdhci_kunmap_sg(struct sdhci_host* host)
163 {
164 kunmap_atomic(host->mapped_sg, KM_BIO_SRC_IRQ);
165 }
166
167 static inline int sdhci_next_sg(struct sdhci_host* host)
168 {
169 /*
170 * Skip to next SG entry.
171 */
172 host->cur_sg++;
173 host->num_sg--;
174
175 /*
176 * Any entries left?
177 */
178 if (host->num_sg > 0) {
179 host->offset = 0;
180 host->remain = host->cur_sg->length;
181 }
182
183 return host->num_sg;
184 }
185
186 static void sdhci_read_block_pio(struct sdhci_host *host)
187 {
188 int blksize, chunk_remain;
189 u32 data;
190 char *buffer;
191 int size;
192
193 DBG("PIO reading\n");
194
195 blksize = host->data->blksz;
196 chunk_remain = 0;
197 data = 0;
198
199 buffer = sdhci_kmap_sg(host) + host->offset;
200
201 while (blksize) {
202 if (chunk_remain == 0) {
203 data = readl(host->ioaddr + SDHCI_BUFFER);
204 chunk_remain = min(blksize, 4);
205 }
206
207 size = min(host->size, host->remain);
208 size = min(size, chunk_remain);
209
210 chunk_remain -= size;
211 blksize -= size;
212 host->offset += size;
213 host->remain -= size;
214 host->size -= size;
215 while (size) {
216 *buffer = data & 0xFF;
217 buffer++;
218 data >>= 8;
219 size--;
220 }
221
222 if (host->remain == 0) {
223 sdhci_kunmap_sg(host);
224 if (sdhci_next_sg(host) == 0) {
225 BUG_ON(blksize != 0);
226 return;
227 }
228 buffer = sdhci_kmap_sg(host);
229 }
230 }
231
232 sdhci_kunmap_sg(host);
233 }
234
235 static void sdhci_write_block_pio(struct sdhci_host *host)
236 {
237 int blksize, chunk_remain;
238 u32 data;
239 char *buffer;
240 int bytes, size;
241
242 DBG("PIO writing\n");
243
244 blksize = host->data->blksz;
245 chunk_remain = 4;
246 data = 0;
247
248 bytes = 0;
249 buffer = sdhci_kmap_sg(host) + host->offset;
250
251 while (blksize) {
252 size = min(host->size, host->remain);
253 size = min(size, chunk_remain);
254
255 chunk_remain -= size;
256 blksize -= size;
257 host->offset += size;
258 host->remain -= size;
259 host->size -= size;
260 while (size) {
261 data >>= 8;
262 data |= (u32)*buffer << 24;
263 buffer++;
264 size--;
265 }
266
267 if (chunk_remain == 0) {
268 writel(data, host->ioaddr + SDHCI_BUFFER);
269 chunk_remain = min(blksize, 4);
270 }
271
272 if (host->remain == 0) {
273 sdhci_kunmap_sg(host);
274 if (sdhci_next_sg(host) == 0) {
275 BUG_ON(blksize != 0);
276 return;
277 }
278 buffer = sdhci_kmap_sg(host);
279 }
280 }
281
282 sdhci_kunmap_sg(host);
283 }
284
285 static void sdhci_transfer_pio(struct sdhci_host *host)
286 {
287 u32 mask;
288
289 BUG_ON(!host->data);
290
291 if (host->size == 0)
292 return;
293
294 if (host->data->flags & MMC_DATA_READ)
295 mask = SDHCI_DATA_AVAILABLE;
296 else
297 mask = SDHCI_SPACE_AVAILABLE;
298
299 while (readl(host->ioaddr + SDHCI_PRESENT_STATE) & mask) {
300 if (host->data->flags & MMC_DATA_READ)
301 sdhci_read_block_pio(host);
302 else
303 sdhci_write_block_pio(host);
304
305 if (host->size == 0)
306 break;
307
308 BUG_ON(host->num_sg == 0);
309 }
310
311 DBG("PIO transfer complete.\n");
312 }
313
314 static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
315 {
316 u8 count;
317 unsigned target_timeout, current_timeout;
318
319 WARN_ON(host->data);
320
321 if (data == NULL)
322 return;
323
324 DBG("blksz %04x blks %04x flags %08x\n",
325 data->blksz, data->blocks, data->flags);
326 DBG("tsac %d ms nsac %d clk\n",
327 data->timeout_ns / 1000000, data->timeout_clks);
328
329 /* Sanity checks */
330 BUG_ON(data->blksz * data->blocks > 524288);
331 BUG_ON(data->blksz > host->max_block);
332 BUG_ON(data->blocks > 65535);
333
334 /* timeout in us */
335 target_timeout = data->timeout_ns / 1000 +
336 data->timeout_clks / host->clock;
337
338 /*
339 * Figure out needed cycles.
340 * We do this in steps in order to fit inside a 32 bit int.
341 * The first step is the minimum timeout, which will have a
342 * minimum resolution of 6 bits:
343 * (1) 2^13*1000 > 2^22,
344 * (2) host->timeout_clk < 2^16
345 * =>
346 * (1) / (2) > 2^6
347 */
348 count = 0;
349 current_timeout = (1 << 13) * 1000 / host->timeout_clk;
350 while (current_timeout < target_timeout) {
351 count++;
352 current_timeout <<= 1;
353 if (count >= 0xF)
354 break;
355 }
356
357 if (count >= 0xF) {
358 printk(KERN_WARNING "%s: Too large timeout requested!\n",
359 mmc_hostname(host->mmc));
360 count = 0xE;
361 }
362
363 writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL);
364
365 if (host->flags & SDHCI_USE_DMA) {
366 int count;
367
368 count = pci_map_sg(host->chip->pdev, data->sg, data->sg_len,
369 (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
370 BUG_ON(count != 1);
371
372 writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS);
373 } else {
374 host->size = data->blksz * data->blocks;
375
376 host->cur_sg = data->sg;
377 host->num_sg = data->sg_len;
378
379 host->offset = 0;
380 host->remain = host->cur_sg->length;
381 }
382
383 /* We do not handle DMA boundaries, so set it to max (512 KiB) */
384 writew(SDHCI_MAKE_BLKSZ(7, data->blksz),
385 host->ioaddr + SDHCI_BLOCK_SIZE);
386 writew(data->blocks, host->ioaddr + SDHCI_BLOCK_COUNT);
387 }
388
389 static void sdhci_set_transfer_mode(struct sdhci_host *host,
390 struct mmc_data *data)
391 {
392 u16 mode;
393
394 WARN_ON(host->data);
395
396 if (data == NULL)
397 return;
398
399 mode = SDHCI_TRNS_BLK_CNT_EN;
400 if (data->blocks > 1)
401 mode |= SDHCI_TRNS_MULTI;
402 if (data->flags & MMC_DATA_READ)
403 mode |= SDHCI_TRNS_READ;
404 if (host->flags & SDHCI_USE_DMA)
405 mode |= SDHCI_TRNS_DMA;
406
407 writew(mode, host->ioaddr + SDHCI_TRANSFER_MODE);
408 }
409
410 static void sdhci_finish_data(struct sdhci_host *host)
411 {
412 struct mmc_data *data;
413 u16 blocks;
414
415 BUG_ON(!host->data);
416
417 data = host->data;
418 host->data = NULL;
419
420 if (host->flags & SDHCI_USE_DMA) {
421 pci_unmap_sg(host->chip->pdev, data->sg, data->sg_len,
422 (data->flags & MMC_DATA_READ)?PCI_DMA_FROMDEVICE:PCI_DMA_TODEVICE);
423 }
424
425 /*
426 * Controller doesn't count down when in single block mode.
427 */
428 if ((data->blocks == 1) && (data->error == MMC_ERR_NONE))
429 blocks = 0;
430 else
431 blocks = readw(host->ioaddr + SDHCI_BLOCK_COUNT);
432 data->bytes_xfered = data->blksz * (data->blocks - blocks);
433
434 if ((data->error == MMC_ERR_NONE) && blocks) {
435 printk(KERN_ERR "%s: Controller signalled completion even "
436 "though there were blocks left. Please report this "
437 "to " BUGMAIL ".\n", mmc_hostname(host->mmc));
438 data->error = MMC_ERR_FAILED;
439 }
440
441 if (host->size != 0) {
442 printk(KERN_ERR "%s: %d bytes were left untransferred. "
443 "Please report this to " BUGMAIL ".\n",
444 mmc_hostname(host->mmc), host->size);
445 data->error = MMC_ERR_FAILED;
446 }
447
448 DBG("Ending data transfer (%d bytes)\n", data->bytes_xfered);
449
450 if (data->stop) {
451 /*
452 * The controller needs a reset of internal state machines
453 * upon error conditions.
454 */
455 if (data->error != MMC_ERR_NONE) {
456 sdhci_reset(host, SDHCI_RESET_CMD);
457 sdhci_reset(host, SDHCI_RESET_DATA);
458 }
459
460 sdhci_send_command(host, data->stop);
461 } else
462 tasklet_schedule(&host->finish_tasklet);
463 }
464
465 static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
466 {
467 int flags;
468 unsigned long timeout;
469
470 WARN_ON(host->cmd);
471
472 DBG("Sending cmd (%x)\n", cmd->opcode);
473
474 /* Wait max 10 ms */
475 timeout = 10;
476 while (readl(host->ioaddr + SDHCI_PRESENT_STATE) &
477 (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
478 if (timeout == 0) {
479 printk(KERN_ERR "%s: Controller never released "
480 "inhibit bits. Please report this to "
481 BUGMAIL ".\n", mmc_hostname(host->mmc));
482 sdhci_dumpregs(host);
483 cmd->error = MMC_ERR_FAILED;
484 tasklet_schedule(&host->finish_tasklet);
485 return;
486 }
487 timeout--;
488 mdelay(1);
489 }
490
491 mod_timer(&host->timer, jiffies + 10 * HZ);
492
493 host->cmd = cmd;
494
495 sdhci_prepare_data(host, cmd->data);
496
497 writel(cmd->arg, host->ioaddr + SDHCI_ARGUMENT);
498
499 sdhci_set_transfer_mode(host, cmd->data);
500
501 if ((cmd->flags & MMC_RSP_136) && (cmd->flags & MMC_RSP_BUSY)) {
502 printk(KERN_ERR "%s: Unsupported response type! "
503 "Please report this to " BUGMAIL ".\n",
504 mmc_hostname(host->mmc));
505 cmd->error = MMC_ERR_INVALID;
506 tasklet_schedule(&host->finish_tasklet);
507 return;
508 }
509
510 if (!(cmd->flags & MMC_RSP_PRESENT))
511 flags = SDHCI_CMD_RESP_NONE;
512 else if (cmd->flags & MMC_RSP_136)
513 flags = SDHCI_CMD_RESP_LONG;
514 else if (cmd->flags & MMC_RSP_BUSY)
515 flags = SDHCI_CMD_RESP_SHORT_BUSY;
516 else
517 flags = SDHCI_CMD_RESP_SHORT;
518
519 if (cmd->flags & MMC_RSP_CRC)
520 flags |= SDHCI_CMD_CRC;
521 if (cmd->flags & MMC_RSP_OPCODE)
522 flags |= SDHCI_CMD_INDEX;
523 if (cmd->data)
524 flags |= SDHCI_CMD_DATA;
525
526 writel(SDHCI_MAKE_CMD(cmd->opcode, flags),
527 host->ioaddr + SDHCI_COMMAND);
528 }
529
530 static void sdhci_finish_command(struct sdhci_host *host)
531 {
532 int i;
533
534 BUG_ON(host->cmd == NULL);
535
536 if (host->cmd->flags & MMC_RSP_PRESENT) {
537 if (host->cmd->flags & MMC_RSP_136) {
538 /* CRC is stripped so we need to do some shifting. */
539 for (i = 0;i < 4;i++) {
540 host->cmd->resp[i] = readl(host->ioaddr +
541 SDHCI_RESPONSE + (3-i)*4) << 8;
542 if (i != 3)
543 host->cmd->resp[i] |=
544 readb(host->ioaddr +
545 SDHCI_RESPONSE + (3-i)*4-1);
546 }
547 } else {
548 host->cmd->resp[0] = readl(host->ioaddr + SDHCI_RESPONSE);
549 }
550 }
551
552 host->cmd->error = MMC_ERR_NONE;
553
554 DBG("Ending cmd (%x)\n", host->cmd->opcode);
555
556 if (host->cmd->data)
557 host->data = host->cmd->data;
558 else
559 tasklet_schedule(&host->finish_tasklet);
560
561 host->cmd = NULL;
562 }
563
564 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
565 {
566 int div;
567 u16 clk;
568 unsigned long timeout;
569
570 if (clock == host->clock)
571 return;
572
573 writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
574
575 if (clock == 0)
576 goto out;
577
578 for (div = 1;div < 256;div *= 2) {
579 if ((host->max_clk / div) <= clock)
580 break;
581 }
582 div >>= 1;
583
584 clk = div << SDHCI_DIVIDER_SHIFT;
585 clk |= SDHCI_CLOCK_INT_EN;
586 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
587
588 /* Wait max 10 ms */
589 timeout = 10;
590 while (!((clk = readw(host->ioaddr + SDHCI_CLOCK_CONTROL))
591 & SDHCI_CLOCK_INT_STABLE)) {
592 if (timeout == 0) {
593 printk(KERN_ERR "%s: Internal clock never stabilised. "
594 "Please report this to " BUGMAIL ".\n",
595 mmc_hostname(host->mmc));
596 sdhci_dumpregs(host);
597 return;
598 }
599 timeout--;
600 mdelay(1);
601 }
602
603 clk |= SDHCI_CLOCK_CARD_EN;
604 writew(clk, host->ioaddr + SDHCI_CLOCK_CONTROL);
605
606 out:
607 host->clock = clock;
608 }
609
610 static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
611 {
612 u8 pwr;
613
614 if (host->power == power)
615 return;
616
617 writeb(0, host->ioaddr + SDHCI_POWER_CONTROL);
618
619 if (power == (unsigned short)-1)
620 goto out;
621
622 pwr = SDHCI_POWER_ON;
623
624 switch (power) {
625 case MMC_VDD_170:
626 case MMC_VDD_180:
627 case MMC_VDD_190:
628 pwr |= SDHCI_POWER_180;
629 break;
630 case MMC_VDD_290:
631 case MMC_VDD_300:
632 case MMC_VDD_310:
633 pwr |= SDHCI_POWER_300;
634 break;
635 case MMC_VDD_320:
636 case MMC_VDD_330:
637 case MMC_VDD_340:
638 pwr |= SDHCI_POWER_330;
639 break;
640 default:
641 BUG();
642 }
643
644 writeb(pwr, host->ioaddr + SDHCI_POWER_CONTROL);
645
646 out:
647 host->power = power;
648 }
649
650 /*****************************************************************************\
651 * *
652 * MMC callbacks *
653 * *
654 \*****************************************************************************/
655
656 static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
657 {
658 struct sdhci_host *host;
659 unsigned long flags;
660
661 host = mmc_priv(mmc);
662
663 spin_lock_irqsave(&host->lock, flags);
664
665 WARN_ON(host->mrq != NULL);
666
667 sdhci_activate_led(host);
668
669 host->mrq = mrq;
670
671 if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
672 host->mrq->cmd->error = MMC_ERR_TIMEOUT;
673 tasklet_schedule(&host->finish_tasklet);
674 } else
675 sdhci_send_command(host, mrq->cmd);
676
677 spin_unlock_irqrestore(&host->lock, flags);
678 }
679
680 static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
681 {
682 struct sdhci_host *host;
683 unsigned long flags;
684 u8 ctrl;
685
686 host = mmc_priv(mmc);
687
688 spin_lock_irqsave(&host->lock, flags);
689
690 /*
691 * Reset the chip on each power off.
692 * Should clear out any weird states.
693 */
694 if (ios->power_mode == MMC_POWER_OFF) {
695 writel(0, host->ioaddr + SDHCI_SIGNAL_ENABLE);
696 sdhci_init(host);
697 }
698
699 sdhci_set_clock(host, ios->clock);
700
701 if (ios->power_mode == MMC_POWER_OFF)
702 sdhci_set_power(host, -1);
703 else
704 sdhci_set_power(host, ios->vdd);
705
706 ctrl = readb(host->ioaddr + SDHCI_HOST_CONTROL);
707 if (ios->bus_width == MMC_BUS_WIDTH_4)
708 ctrl |= SDHCI_CTRL_4BITBUS;
709 else
710 ctrl &= ~SDHCI_CTRL_4BITBUS;
711 writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
712
713 spin_unlock_irqrestore(&host->lock, flags);
714 }
715
716 static int sdhci_get_ro(struct mmc_host *mmc)
717 {
718 struct sdhci_host *host;
719 unsigned long flags;
720 int present;
721
722 host = mmc_priv(mmc);
723
724 spin_lock_irqsave(&host->lock, flags);
725
726 present = readl(host->ioaddr + SDHCI_PRESENT_STATE);
727
728 spin_unlock_irqrestore(&host->lock, flags);
729
730 return !(present & SDHCI_WRITE_PROTECT);
731 }
732
733 static struct mmc_host_ops sdhci_ops = {
734 .request = sdhci_request,
735 .set_ios = sdhci_set_ios,
736 .get_ro = sdhci_get_ro,
737 };
738
739 /*****************************************************************************\
740 * *
741 * Tasklets *
742 * *
743 \*****************************************************************************/
744
745 static void sdhci_tasklet_card(unsigned long param)
746 {
747 struct sdhci_host *host;
748 unsigned long flags;
749
750 host = (struct sdhci_host*)param;
751
752 spin_lock_irqsave(&host->lock, flags);
753
754 if (!(readl(host->ioaddr + SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT)) {
755 if (host->mrq) {
756 printk(KERN_ERR "%s: Card removed during transfer!\n",
757 mmc_hostname(host->mmc));
758 printk(KERN_ERR "%s: Resetting controller.\n",
759 mmc_hostname(host->mmc));
760
761 sdhci_reset(host, SDHCI_RESET_CMD);
762 sdhci_reset(host, SDHCI_RESET_DATA);
763
764 host->mrq->cmd->error = MMC_ERR_FAILED;
765 tasklet_schedule(&host->finish_tasklet);
766 }
767 }
768
769 spin_unlock_irqrestore(&host->lock, flags);
770
771 mmc_detect_change(host->mmc, msecs_to_jiffies(500));
772 }
773
774 static void sdhci_tasklet_finish(unsigned long param)
775 {
776 struct sdhci_host *host;
777 unsigned long flags;
778 struct mmc_request *mrq;
779
780 host = (struct sdhci_host*)param;
781
782 spin_lock_irqsave(&host->lock, flags);
783
784 del_timer(&host->timer);
785
786 mrq = host->mrq;
787
788 DBG("Ending request, cmd (%x)\n", mrq->cmd->opcode);
789
790 /*
791 * The controller needs a reset of internal state machines
792 * upon error conditions.
793 */
794 if ((mrq->cmd->error != MMC_ERR_NONE) ||
795 (mrq->data && ((mrq->data->error != MMC_ERR_NONE) ||
796 (mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) {
797 sdhci_reset(host, SDHCI_RESET_CMD);
798 sdhci_reset(host, SDHCI_RESET_DATA);
799 }
800
801 host->mrq = NULL;
802 host->cmd = NULL;
803 host->data = NULL;
804
805 sdhci_deactivate_led(host);
806
807 spin_unlock_irqrestore(&host->lock, flags);
808
809 mmc_request_done(host->mmc, mrq);
810 }
811
812 static void sdhci_timeout_timer(unsigned long data)
813 {
814 struct sdhci_host *host;
815 unsigned long flags;
816
817 host = (struct sdhci_host*)data;
818
819 spin_lock_irqsave(&host->lock, flags);
820
821 if (host->mrq) {
822 printk(KERN_ERR "%s: Timeout waiting for hardware interrupt. "
823 "Please report this to " BUGMAIL ".\n",
824 mmc_hostname(host->mmc));
825 sdhci_dumpregs(host);
826
827 if (host->data) {
828 host->data->error = MMC_ERR_TIMEOUT;
829 sdhci_finish_data(host);
830 } else {
831 if (host->cmd)
832 host->cmd->error = MMC_ERR_TIMEOUT;
833 else
834 host->mrq->cmd->error = MMC_ERR_TIMEOUT;
835
836 tasklet_schedule(&host->finish_tasklet);
837 }
838 }
839
840 spin_unlock_irqrestore(&host->lock, flags);
841 }
842
843 /*****************************************************************************\
844 * *
845 * Interrupt handling *
846 * *
847 \*****************************************************************************/
848
849 static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
850 {
851 BUG_ON(intmask == 0);
852
853 if (!host->cmd) {
854 printk(KERN_ERR "%s: Got command interrupt even though no "
855 "command operation was in progress.\n",
856 mmc_hostname(host->mmc));
857 printk(KERN_ERR "%s: Please report this to " BUGMAIL ".\n",
858 mmc_hostname(host->mmc));
859 sdhci_dumpregs(host);
860 return;
861 }
862
863 if (intmask & SDHCI_INT_RESPONSE)
864 sdhci_finish_command(host);
865 else {
866 if (intmask & SDHCI_INT_TIMEOUT)
867 host->cmd->error = MMC_ERR_TIMEOUT;
868 else if (intmask & SDHCI_INT_CRC)
869 host->cmd->error = MMC_ERR_BADCRC;
870 else if (intmask & (SDHCI_INT_END_BIT | SDHCI_INT_INDEX))
871 host->cmd->error = MMC_ERR_FAILED;
872 else
873 host->cmd->error = MMC_ERR_INVALID;
874
875 tasklet_schedule(&host->finish_tasklet);
876 }
877 }
878
879 static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
880 {
881 BUG_ON(intmask == 0);
882
883 if (!host->data) {
884 /*
885 * A data end interrupt is sent together with the response
886 * for the stop command.
887 */
888 if (intmask & SDHCI_INT_DATA_END)
889 return;
890
891 printk(KERN_ERR "%s: Got data interrupt even though no "
892 "data operation was in progress.\n",
893 mmc_hostname(host->mmc));
894 printk(KERN_ERR "%s: Please report this to " BUGMAIL ".\n",
895 mmc_hostname(host->mmc));
896 sdhci_dumpregs(host);
897
898 return;
899 }
900
901 if (intmask & SDHCI_INT_DATA_TIMEOUT)
902 host->data->error = MMC_ERR_TIMEOUT;
903 else if (intmask & SDHCI_INT_DATA_CRC)
904 host->data->error = MMC_ERR_BADCRC;
905 else if (intmask & SDHCI_INT_DATA_END_BIT)
906 host->data->error = MMC_ERR_FAILED;
907
908 if (host->data->error != MMC_ERR_NONE)
909 sdhci_finish_data(host);
910 else {
911 if (intmask & (SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL))
912 sdhci_transfer_pio(host);
913
914 if (intmask & SDHCI_INT_DATA_END)
915 sdhci_finish_data(host);
916 }
917 }
918
919 static irqreturn_t sdhci_irq(int irq, void *dev_id, struct pt_regs *regs)
920 {
921 irqreturn_t result;
922 struct sdhci_host* host = dev_id;
923 u32 intmask;
924
925 spin_lock(&host->lock);
926
927 intmask = readl(host->ioaddr + SDHCI_INT_STATUS);
928
929 if (!intmask) {
930 result = IRQ_NONE;
931 goto out;
932 }
933
934 DBG("*** %s got interrupt: 0x%08x\n", host->slot_descr, intmask);
935
936 if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
937 writel(intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE),
938 host->ioaddr + SDHCI_INT_STATUS);
939 tasklet_schedule(&host->card_tasklet);
940 }
941
942 intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
943
944 if (intmask & SDHCI_INT_CMD_MASK) {
945 writel(intmask & SDHCI_INT_CMD_MASK,
946 host->ioaddr + SDHCI_INT_STATUS);
947 sdhci_cmd_irq(host, intmask & SDHCI_INT_CMD_MASK);
948 }
949
950 if (intmask & SDHCI_INT_DATA_MASK) {
951 writel(intmask & SDHCI_INT_DATA_MASK,
952 host->ioaddr + SDHCI_INT_STATUS);
953 sdhci_data_irq(host, intmask & SDHCI_INT_DATA_MASK);
954 }
955
956 intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK);
957
958 if (intmask & SDHCI_INT_BUS_POWER) {
959 printk(KERN_ERR "%s: Card is consuming too much power!\n",
960 mmc_hostname(host->mmc));
961 writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS);
962 }
963
964 intmask &= SDHCI_INT_BUS_POWER;
965
966 if (intmask) {
967 printk(KERN_ERR "%s: Unexpected interrupt 0x%08x. Please "
968 "report this to " BUGMAIL ".\n",
969 mmc_hostname(host->mmc), intmask);
970 sdhci_dumpregs(host);
971
972 writel(intmask, host->ioaddr + SDHCI_INT_STATUS);
973 }
974
975 result = IRQ_HANDLED;
976
977 out:
978 spin_unlock(&host->lock);
979
980 return result;
981 }
982
983 /*****************************************************************************\
984 * *
985 * Suspend/resume *
986 * *
987 \*****************************************************************************/
988
989 #ifdef CONFIG_PM
990
991 static int sdhci_suspend (struct pci_dev *pdev, pm_message_t state)
992 {
993 struct sdhci_chip *chip;
994 int i, ret;
995
996 chip = pci_get_drvdata(pdev);
997 if (!chip)
998 return 0;
999
1000 DBG("Suspending...\n");
1001
1002 for (i = 0;i < chip->num_slots;i++) {
1003 if (!chip->hosts[i])
1004 continue;
1005 ret = mmc_suspend_host(chip->hosts[i]->mmc, state);
1006 if (ret) {
1007 for (i--;i >= 0;i--)
1008 mmc_resume_host(chip->hosts[i]->mmc);
1009 return ret;
1010 }
1011 }
1012
1013 pci_save_state(pdev);
1014 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
1015 pci_disable_device(pdev);
1016 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1017
1018 return 0;
1019 }
1020
1021 static int sdhci_resume (struct pci_dev *pdev)
1022 {
1023 struct sdhci_chip *chip;
1024 int i, ret;
1025
1026 chip = pci_get_drvdata(pdev);
1027 if (!chip)
1028 return 0;
1029
1030 DBG("Resuming...\n");
1031
1032 pci_set_power_state(pdev, PCI_D0);
1033 pci_restore_state(pdev);
1034 pci_enable_device(pdev);
1035
1036 for (i = 0;i < chip->num_slots;i++) {
1037 if (!chip->hosts[i])
1038 continue;
1039 if (chip->hosts[i]->flags & SDHCI_USE_DMA)
1040 pci_set_master(pdev);
1041 sdhci_init(chip->hosts[i]);
1042 ret = mmc_resume_host(chip->hosts[i]->mmc);
1043 if (ret)
1044 return ret;
1045 }
1046
1047 return 0;
1048 }
1049
1050 #else /* CONFIG_PM */
1051
1052 #define sdhci_suspend NULL
1053 #define sdhci_resume NULL
1054
1055 #endif /* CONFIG_PM */
1056
1057 /*****************************************************************************\
1058 * *
1059 * Device probing/removal *
1060 * *
1061 \*****************************************************************************/
1062
1063 static int __devinit sdhci_probe_slot(struct pci_dev *pdev, int slot)
1064 {
1065 int ret;
1066 struct sdhci_chip *chip;
1067 struct mmc_host *mmc;
1068 struct sdhci_host *host;
1069
1070 u8 first_bar;
1071 unsigned int caps;
1072
1073 chip = pci_get_drvdata(pdev);
1074 BUG_ON(!chip);
1075
1076 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1077 if (ret)
1078 return ret;
1079
1080 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1081
1082 if (first_bar > 5) {
1083 printk(KERN_ERR DRIVER_NAME ": Invalid first BAR. Aborting.\n");
1084 return -ENODEV;
1085 }
1086
1087 if (!(pci_resource_flags(pdev, first_bar + slot) & IORESOURCE_MEM)) {
1088 printk(KERN_ERR DRIVER_NAME ": BAR is not iomem. Aborting.\n");
1089 return -ENODEV;
1090 }
1091
1092 if (pci_resource_len(pdev, first_bar + slot) != 0x100) {
1093 printk(KERN_ERR DRIVER_NAME ": Invalid iomem size. Aborting.\n");
1094 return -ENODEV;
1095 }
1096
1097 mmc = mmc_alloc_host(sizeof(struct sdhci_host), &pdev->dev);
1098 if (!mmc)
1099 return -ENOMEM;
1100
1101 host = mmc_priv(mmc);
1102 host->mmc = mmc;
1103
1104 host->bar = first_bar + slot;
1105
1106 host->addr = pci_resource_start(pdev, host->bar);
1107 host->irq = pdev->irq;
1108
1109 DBG("slot %d at 0x%08lx, irq %d\n", slot, host->addr, host->irq);
1110
1111 snprintf(host->slot_descr, 20, "sdhci:slot%d", slot);
1112
1113 ret = pci_request_region(pdev, host->bar, host->slot_descr);
1114 if (ret)
1115 goto free;
1116
1117 host->ioaddr = ioremap_nocache(host->addr,
1118 pci_resource_len(pdev, host->bar));
1119 if (!host->ioaddr) {
1120 ret = -ENOMEM;
1121 goto release;
1122 }
1123
1124 caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
1125
1126 if ((caps & SDHCI_CAN_DO_DMA) && ((pdev->class & 0x0000FF) == 0x01))
1127 host->flags |= SDHCI_USE_DMA;
1128
1129 if (host->flags & SDHCI_USE_DMA) {
1130 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
1131 printk(KERN_WARNING "%s: No suitable DMA available. "
1132 "Falling back to PIO.\n", host->slot_descr);
1133 host->flags &= ~SDHCI_USE_DMA;
1134 }
1135 }
1136
1137 if (host->flags & SDHCI_USE_DMA)
1138 pci_set_master(pdev);
1139 else /* XXX: Hack to get MMC layer to avoid highmem */
1140 pdev->dma_mask = 0;
1141
1142 host->max_clk =
1143 (caps & SDHCI_CLOCK_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
1144 if (host->max_clk == 0) {
1145 printk(KERN_ERR "%s: Hardware doesn't specify base clock "
1146 "frequency.\n", host->slot_descr);
1147 ret = -ENODEV;
1148 goto unmap;
1149 }
1150 host->max_clk *= 1000000;
1151
1152 host->timeout_clk =
1153 (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT;
1154 if (host->timeout_clk == 0) {
1155 printk(KERN_ERR "%s: Hardware doesn't specify timeout clock "
1156 "frequency.\n", host->slot_descr);
1157 ret = -ENODEV;
1158 goto unmap;
1159 }
1160 if (caps & SDHCI_TIMEOUT_CLK_UNIT)
1161 host->timeout_clk *= 1000;
1162
1163 host->max_block = (caps & SDHCI_MAX_BLOCK_MASK) >> SDHCI_MAX_BLOCK_SHIFT;
1164 if (host->max_block >= 3) {
1165 printk(KERN_ERR "%s: Invalid maximum block size.\n",
1166 host->slot_descr);
1167 ret = -ENODEV;
1168 goto unmap;
1169 }
1170 host->max_block = 512 << host->max_block;
1171
1172 /*
1173 * Set host parameters.
1174 */
1175 mmc->ops = &sdhci_ops;
1176 mmc->f_min = host->max_clk / 256;
1177 mmc->f_max = host->max_clk;
1178 mmc->caps = MMC_CAP_4_BIT_DATA;
1179
1180 mmc->ocr_avail = 0;
1181 if (caps & SDHCI_CAN_VDD_330)
1182 mmc->ocr_avail |= MMC_VDD_32_33|MMC_VDD_33_34;
1183 else if (caps & SDHCI_CAN_VDD_300)
1184 mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31;
1185 else if (caps & SDHCI_CAN_VDD_180)
1186 mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
1187
1188 if (mmc->ocr_avail == 0) {
1189 printk(KERN_ERR "%s: Hardware doesn't report any "
1190 "support voltages.\n", host->slot_descr);
1191 ret = -ENODEV;
1192 goto unmap;
1193 }
1194
1195 spin_lock_init(&host->lock);
1196
1197 /*
1198 * Maximum number of segments. Hardware cannot do scatter lists.
1199 */
1200 if (host->flags & SDHCI_USE_DMA)
1201 mmc->max_hw_segs = 1;
1202 else
1203 mmc->max_hw_segs = 16;
1204 mmc->max_phys_segs = 16;
1205
1206 /*
1207 * Maximum number of sectors in one transfer. Limited by DMA boundary
1208 * size (512KiB), which means (512 KiB/512=) 1024 entries.
1209 */
1210 mmc->max_sectors = 1024;
1211
1212 /*
1213 * Maximum segment size. Could be one segment with the maximum number
1214 * of sectors.
1215 */
1216 mmc->max_seg_size = mmc->max_sectors * 512;
1217
1218 /*
1219 * Init tasklets.
1220 */
1221 tasklet_init(&host->card_tasklet,
1222 sdhci_tasklet_card, (unsigned long)host);
1223 tasklet_init(&host->finish_tasklet,
1224 sdhci_tasklet_finish, (unsigned long)host);
1225
1226 setup_timer(&host->timer, sdhci_timeout_timer, (long)host);
1227
1228 ret = request_irq(host->irq, sdhci_irq, SA_SHIRQ,
1229 host->slot_descr, host);
1230 if (ret)
1231 goto untasklet;
1232
1233 sdhci_init(host);
1234
1235 #ifdef CONFIG_MMC_DEBUG
1236 sdhci_dumpregs(host);
1237 #endif
1238
1239 host->chip = chip;
1240 chip->hosts[slot] = host;
1241
1242 mmc_add_host(mmc);
1243
1244 printk(KERN_INFO "%s: SDHCI at 0x%08lx irq %d %s\n", mmc_hostname(mmc),
1245 host->addr, host->irq,
1246 (host->flags & SDHCI_USE_DMA)?"DMA":"PIO");
1247
1248 return 0;
1249
1250 untasklet:
1251 tasklet_kill(&host->card_tasklet);
1252 tasklet_kill(&host->finish_tasklet);
1253 unmap:
1254 iounmap(host->ioaddr);
1255 release:
1256 pci_release_region(pdev, host->bar);
1257 free:
1258 mmc_free_host(mmc);
1259
1260 return ret;
1261 }
1262
1263 static void sdhci_remove_slot(struct pci_dev *pdev, int slot)
1264 {
1265 struct sdhci_chip *chip;
1266 struct mmc_host *mmc;
1267 struct sdhci_host *host;
1268
1269 chip = pci_get_drvdata(pdev);
1270 host = chip->hosts[slot];
1271 mmc = host->mmc;
1272
1273 chip->hosts[slot] = NULL;
1274
1275 mmc_remove_host(mmc);
1276
1277 sdhci_reset(host, SDHCI_RESET_ALL);
1278
1279 free_irq(host->irq, host);
1280
1281 del_timer_sync(&host->timer);
1282
1283 tasklet_kill(&host->card_tasklet);
1284 tasklet_kill(&host->finish_tasklet);
1285
1286 iounmap(host->ioaddr);
1287
1288 pci_release_region(pdev, host->bar);
1289
1290 mmc_free_host(mmc);
1291 }
1292
1293 static int __devinit sdhci_probe(struct pci_dev *pdev,
1294 const struct pci_device_id *ent)
1295 {
1296 int ret, i;
1297 u8 slots, rev;
1298 struct sdhci_chip *chip;
1299
1300 BUG_ON(pdev == NULL);
1301 BUG_ON(ent == NULL);
1302
1303 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
1304
1305 printk(KERN_INFO DRIVER_NAME
1306 ": SDHCI controller found at %s [%04x:%04x] (rev %x)\n",
1307 pci_name(pdev), (int)pdev->vendor, (int)pdev->device,
1308 (int)rev);
1309
1310 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1311 if (ret)
1312 return ret;
1313
1314 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1315 DBG("found %d slot(s)\n", slots);
1316 if (slots == 0)
1317 return -ENODEV;
1318
1319 ret = pci_enable_device(pdev);
1320 if (ret)
1321 return ret;
1322
1323 chip = kzalloc(sizeof(struct sdhci_chip) +
1324 sizeof(struct sdhci_host*) * slots, GFP_KERNEL);
1325 if (!chip) {
1326 ret = -ENOMEM;
1327 goto err;
1328 }
1329
1330 chip->pdev = pdev;
1331
1332 chip->num_slots = slots;
1333 pci_set_drvdata(pdev, chip);
1334
1335 for (i = 0;i < slots;i++) {
1336 ret = sdhci_probe_slot(pdev, i);
1337 if (ret) {
1338 for (i--;i >= 0;i--)
1339 sdhci_remove_slot(pdev, i);
1340 goto free;
1341 }
1342 }
1343
1344 return 0;
1345
1346 free:
1347 pci_set_drvdata(pdev, NULL);
1348 kfree(chip);
1349
1350 err:
1351 pci_disable_device(pdev);
1352 return ret;
1353 }
1354
1355 static void __devexit sdhci_remove(struct pci_dev *pdev)
1356 {
1357 int i;
1358 struct sdhci_chip *chip;
1359
1360 chip = pci_get_drvdata(pdev);
1361
1362 if (chip) {
1363 for (i = 0;i < chip->num_slots;i++)
1364 sdhci_remove_slot(pdev, i);
1365
1366 pci_set_drvdata(pdev, NULL);
1367
1368 kfree(chip);
1369 }
1370
1371 pci_disable_device(pdev);
1372 }
1373
1374 static struct pci_driver sdhci_driver = {
1375 .name = DRIVER_NAME,
1376 .id_table = pci_ids,
1377 .probe = sdhci_probe,
1378 .remove = __devexit_p(sdhci_remove),
1379 .suspend = sdhci_suspend,
1380 .resume = sdhci_resume,
1381 };
1382
1383 /*****************************************************************************\
1384 * *
1385 * Driver init/exit *
1386 * *
1387 \*****************************************************************************/
1388
1389 static int __init sdhci_drv_init(void)
1390 {
1391 printk(KERN_INFO DRIVER_NAME
1392 ": Secure Digital Host Controller Interface driver, "
1393 DRIVER_VERSION "\n");
1394 printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n");
1395
1396 return pci_register_driver(&sdhci_driver);
1397 }
1398
1399 static void __exit sdhci_drv_exit(void)
1400 {
1401 DBG("Exiting\n");
1402
1403 pci_unregister_driver(&sdhci_driver);
1404 }
1405
1406 module_init(sdhci_drv_init);
1407 module_exit(sdhci_drv_exit);
1408
1409 MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>");
1410 MODULE_DESCRIPTION("Secure Digital Host Controller Interface driver");
1411 MODULE_VERSION(DRIVER_VERSION);
1412 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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