blob: 65be27995d5cbe7d9ec1aaeaa7dbb79f91a65967 [file] [log] [blame]
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +01001/* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
2 *
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 *
10 * Thanks to the following companies for their support:
11 *
12 * - JMicron (hardware and technical support)
13 */
14
15#include <linux/delay.h>
16#include <linux/highmem.h>
17#include <linux/pci.h>
18#include <linux/dma-mapping.h>
19
20#include <linux/mmc/host.h>
21
22#include <asm/scatterlist.h>
23#include <asm/io.h>
24
25#include "sdhci.h"
26
27/*
28 * PCI registers
29 */
30
31#define PCI_SDHCI_IFPIO 0x00
32#define PCI_SDHCI_IFDMA 0x01
33#define PCI_SDHCI_IFVENDOR 0x02
34
35#define PCI_SLOT_INFO 0x40 /* 8 bits */
36#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
37#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
38
39#define MAX_SLOTS 8
40
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010041struct sdhci_pci_chip;
Pierre Ossman44894282008-04-04 19:36:59 +020042struct sdhci_pci_slot;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010043
Pierre Ossman22606402008-03-23 19:33:23 +010044struct sdhci_pci_fixes {
45 unsigned int quirks;
46
47 int (*probe)(struct sdhci_pci_chip*);
Pierre Ossman45211e22008-03-24 13:09:09 +010048
Pierre Ossman44894282008-04-04 19:36:59 +020049 int (*probe_slot)(struct sdhci_pci_slot*);
Pierre Ossman1e728592008-04-16 19:13:13 +020050 void (*remove_slot)(struct sdhci_pci_slot*, int);
Pierre Ossman44894282008-04-04 19:36:59 +020051
52 int (*suspend)(struct sdhci_pci_chip*,
53 pm_message_t);
Pierre Ossman45211e22008-03-24 13:09:09 +010054 int (*resume)(struct sdhci_pci_chip*);
Pierre Ossman22606402008-03-23 19:33:23 +010055};
56
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010057struct sdhci_pci_slot {
58 struct sdhci_pci_chip *chip;
59 struct sdhci_host *host;
60
61 int pci_bar;
62};
63
64struct sdhci_pci_chip {
65 struct pci_dev *pdev;
Pierre Ossman22606402008-03-23 19:33:23 +010066
67 unsigned int quirks;
68 const struct sdhci_pci_fixes *fixes;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010069
70 int num_slots; /* Slots on controller */
71 struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
72};
73
Pierre Ossman22606402008-03-23 19:33:23 +010074
75/*****************************************************************************\
76 * *
77 * Hardware specific quirk handling *
78 * *
79\*****************************************************************************/
80
81static int ricoh_probe(struct sdhci_pci_chip *chip)
82{
83 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
84 chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET;
85
86 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)
87 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
88
89 return 0;
90}
91
92static const struct sdhci_pci_fixes sdhci_ricoh = {
93 .probe = ricoh_probe,
Pierre Ossman309d9732008-05-28 09:54:50 +020094 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR,
Pierre Ossman22606402008-03-23 19:33:23 +010095};
96
97static const struct sdhci_pci_fixes sdhci_ene_712 = {
98 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
99 SDHCI_QUIRK_BROKEN_DMA,
100};
101
102static const struct sdhci_pci_fixes sdhci_ene_714 = {
103 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
104 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
105 SDHCI_QUIRK_BROKEN_DMA,
106};
107
108static const struct sdhci_pci_fixes sdhci_cafe = {
109 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
Andres Salomona0874892009-03-02 21:48:20 +0100110 SDHCI_QUIRK_NO_BUSY_IRQ |
Pierre Ossmanee53ab52008-07-05 00:25:15 +0200111 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
Pierre Ossman22606402008-03-23 19:33:23 +0100112};
113
Pierre Ossman45211e22008-03-24 13:09:09 +0100114static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
115{
116 u8 scratch;
117 int ret;
118
119 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
120 if (ret)
121 return ret;
122
123 /*
124 * Turn PMOS on [bit 0], set over current detection to 2.4 V
125 * [bit 1:2] and enable over current debouncing [bit 6].
126 */
127 if (on)
128 scratch |= 0x47;
129 else
130 scratch &= ~0x47;
131
132 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
133 if (ret)
134 return ret;
135
136 return 0;
137}
138
139static int jmicron_probe(struct sdhci_pci_chip *chip)
140{
141 int ret;
142
Pierre Ossman93fc48c2008-06-28 18:21:41 +0200143 if (chip->pdev->revision == 0) {
144 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
145 SDHCI_QUIRK_32BIT_DMA_SIZE |
Pierre Ossman2134a922008-06-28 18:28:51 +0200146 SDHCI_QUIRK_32BIT_ADMA_SIZE |
Pierre Ossman4a3cba32008-07-29 00:11:16 +0200147 SDHCI_QUIRK_RESET_AFTER_REQUEST |
Pierre Ossman86a6a872009-02-02 21:13:49 +0100148 SDHCI_QUIRK_BROKEN_SMALL_PIO;
Pierre Ossman93fc48c2008-06-28 18:21:41 +0200149 }
150
Pierre Ossman45211e22008-03-24 13:09:09 +0100151 /*
Pierre Ossman44894282008-04-04 19:36:59 +0200152 * JMicron chips can have two interfaces to the same hardware
153 * in order to work around limitations in Microsoft's driver.
154 * We need to make sure we only bind to one of them.
155 *
156 * This code assumes two things:
157 *
158 * 1. The PCI code adds subfunctions in order.
159 *
160 * 2. The MMC interface has a lower subfunction number
161 * than the SD interface.
162 */
163 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) {
164 struct pci_dev *sd_dev;
165
166 sd_dev = NULL;
167 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
168 PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) {
169 if ((PCI_SLOT(chip->pdev->devfn) ==
170 PCI_SLOT(sd_dev->devfn)) &&
171 (chip->pdev->bus == sd_dev->bus))
172 break;
173 }
174
175 if (sd_dev) {
176 pci_dev_put(sd_dev);
177 dev_info(&chip->pdev->dev, "Refusing to bind to "
178 "secondary interface.\n");
179 return -ENODEV;
180 }
181 }
182
183 /*
Pierre Ossman45211e22008-03-24 13:09:09 +0100184 * JMicron chips need a bit of a nudge to enable the power
185 * output pins.
186 */
187 ret = jmicron_pmos(chip, 1);
188 if (ret) {
189 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
190 return ret;
191 }
192
193 return 0;
194}
195
Pierre Ossman44894282008-04-04 19:36:59 +0200196static void jmicron_enable_mmc(struct sdhci_host *host, int on)
197{
198 u8 scratch;
199
200 scratch = readb(host->ioaddr + 0xC0);
201
202 if (on)
203 scratch |= 0x01;
204 else
205 scratch &= ~0x01;
206
207 writeb(scratch, host->ioaddr + 0xC0);
208}
209
210static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
211{
Pierre Ossman2134a922008-06-28 18:28:51 +0200212 if (slot->chip->pdev->revision == 0) {
213 u16 version;
214
215 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
216 version = (version & SDHCI_VENDOR_VER_MASK) >>
217 SDHCI_VENDOR_VER_SHIFT;
218
219 /*
220 * Older versions of the chip have lots of nasty glitches
221 * in the ADMA engine. It's best just to avoid it
222 * completely.
223 */
224 if (version < 0xAC)
225 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
226 }
227
Pierre Ossman44894282008-04-04 19:36:59 +0200228 /*
229 * The secondary interface requires a bit set to get the
230 * interrupts.
231 */
232 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
233 jmicron_enable_mmc(slot->host, 1);
234
235 return 0;
236}
237
Pierre Ossman1e728592008-04-16 19:13:13 +0200238static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
Pierre Ossman44894282008-04-04 19:36:59 +0200239{
Pierre Ossman1e728592008-04-16 19:13:13 +0200240 if (dead)
241 return;
242
Pierre Ossman44894282008-04-04 19:36:59 +0200243 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
244 jmicron_enable_mmc(slot->host, 0);
245}
246
247static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state)
248{
249 int i;
250
251 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
252 for (i = 0;i < chip->num_slots;i++)
253 jmicron_enable_mmc(chip->slots[i]->host, 0);
254 }
255
256 return 0;
257}
258
Pierre Ossman45211e22008-03-24 13:09:09 +0100259static int jmicron_resume(struct sdhci_pci_chip *chip)
260{
Pierre Ossman44894282008-04-04 19:36:59 +0200261 int ret, i;
262
263 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
264 for (i = 0;i < chip->num_slots;i++)
265 jmicron_enable_mmc(chip->slots[i]->host, 1);
266 }
Pierre Ossman45211e22008-03-24 13:09:09 +0100267
268 ret = jmicron_pmos(chip, 1);
269 if (ret) {
270 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
271 return ret;
272 }
273
274 return 0;
275}
276
Pierre Ossman22606402008-03-23 19:33:23 +0100277static const struct sdhci_pci_fixes sdhci_jmicron = {
Pierre Ossman45211e22008-03-24 13:09:09 +0100278 .probe = jmicron_probe,
279
Pierre Ossman44894282008-04-04 19:36:59 +0200280 .probe_slot = jmicron_probe_slot,
281 .remove_slot = jmicron_remove_slot,
282
283 .suspend = jmicron_suspend,
Pierre Ossman45211e22008-03-24 13:09:09 +0100284 .resume = jmicron_resume,
Pierre Ossman22606402008-03-23 19:33:23 +0100285};
286
287static const struct pci_device_id pci_ids[] __devinitdata = {
288 {
289 .vendor = PCI_VENDOR_ID_RICOH,
290 .device = PCI_DEVICE_ID_RICOH_R5C822,
291 .subvendor = PCI_ANY_ID,
292 .subdevice = PCI_ANY_ID,
293 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
294 },
295
296 {
297 .vendor = PCI_VENDOR_ID_ENE,
298 .device = PCI_DEVICE_ID_ENE_CB712_SD,
299 .subvendor = PCI_ANY_ID,
300 .subdevice = PCI_ANY_ID,
301 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
302 },
303
304 {
305 .vendor = PCI_VENDOR_ID_ENE,
306 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
307 .subvendor = PCI_ANY_ID,
308 .subdevice = PCI_ANY_ID,
309 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
310 },
311
312 {
313 .vendor = PCI_VENDOR_ID_ENE,
314 .device = PCI_DEVICE_ID_ENE_CB714_SD,
315 .subvendor = PCI_ANY_ID,
316 .subdevice = PCI_ANY_ID,
317 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
318 },
319
320 {
321 .vendor = PCI_VENDOR_ID_ENE,
322 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
323 .subvendor = PCI_ANY_ID,
324 .subdevice = PCI_ANY_ID,
325 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
326 },
327
328 {
329 .vendor = PCI_VENDOR_ID_MARVELL,
David Woodhouse8c5eb882008-09-03 09:45:57 +0100330 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
Pierre Ossman22606402008-03-23 19:33:23 +0100331 .subvendor = PCI_ANY_ID,
332 .subdevice = PCI_ANY_ID,
333 .driver_data = (kernel_ulong_t)&sdhci_cafe,
334 },
335
336 {
337 .vendor = PCI_VENDOR_ID_JMICRON,
338 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
339 .subvendor = PCI_ANY_ID,
340 .subdevice = PCI_ANY_ID,
341 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
342 },
343
Pierre Ossman44894282008-04-04 19:36:59 +0200344 {
345 .vendor = PCI_VENDOR_ID_JMICRON,
346 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
347 .subvendor = PCI_ANY_ID,
348 .subdevice = PCI_ANY_ID,
349 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
350 },
351
Pierre Ossman22606402008-03-23 19:33:23 +0100352 { /* Generic SD host controller */
353 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
354 },
355
356 { /* end: all zeroes */ },
357};
358
359MODULE_DEVICE_TABLE(pci, pci_ids);
360
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100361/*****************************************************************************\
362 * *
363 * SDHCI core callbacks *
364 * *
365\*****************************************************************************/
366
367static int sdhci_pci_enable_dma(struct sdhci_host *host)
368{
369 struct sdhci_pci_slot *slot;
370 struct pci_dev *pdev;
371 int ret;
372
373 slot = sdhci_priv(host);
374 pdev = slot->chip->pdev;
375
376 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
377 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
378 (host->flags & SDHCI_USE_DMA)) {
379 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
380 "doesn't fully claim to support it.\n");
381 }
382
Yang Hongyang284901a2009-04-06 19:01:15 -0700383 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100384 if (ret)
385 return ret;
386
387 pci_set_master(pdev);
388
389 return 0;
390}
391
392static struct sdhci_ops sdhci_pci_ops = {
393 .enable_dma = sdhci_pci_enable_dma,
394};
395
396/*****************************************************************************\
397 * *
398 * Suspend/resume *
399 * *
400\*****************************************************************************/
401
402#ifdef CONFIG_PM
403
404static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
405{
406 struct sdhci_pci_chip *chip;
407 struct sdhci_pci_slot *slot;
408 int i, ret;
409
410 chip = pci_get_drvdata(pdev);
411 if (!chip)
412 return 0;
413
414 for (i = 0;i < chip->num_slots;i++) {
415 slot = chip->slots[i];
416 if (!slot)
417 continue;
418
419 ret = sdhci_suspend_host(slot->host, state);
420
421 if (ret) {
422 for (i--;i >= 0;i--)
423 sdhci_resume_host(chip->slots[i]->host);
424 return ret;
425 }
426 }
427
Pierre Ossman44894282008-04-04 19:36:59 +0200428 if (chip->fixes && chip->fixes->suspend) {
429 ret = chip->fixes->suspend(chip, state);
430 if (ret) {
431 for (i = chip->num_slots - 1;i >= 0;i--)
432 sdhci_resume_host(chip->slots[i]->host);
433 return ret;
434 }
435 }
436
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100437 pci_save_state(pdev);
438 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
439 pci_disable_device(pdev);
440 pci_set_power_state(pdev, pci_choose_state(pdev, state));
441
442 return 0;
443}
444
445static int sdhci_pci_resume (struct pci_dev *pdev)
446{
447 struct sdhci_pci_chip *chip;
448 struct sdhci_pci_slot *slot;
449 int i, ret;
450
451 chip = pci_get_drvdata(pdev);
452 if (!chip)
453 return 0;
454
455 pci_set_power_state(pdev, PCI_D0);
456 pci_restore_state(pdev);
457 ret = pci_enable_device(pdev);
458 if (ret)
459 return ret;
460
Pierre Ossman45211e22008-03-24 13:09:09 +0100461 if (chip->fixes && chip->fixes->resume) {
462 ret = chip->fixes->resume(chip);
463 if (ret)
464 return ret;
465 }
466
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100467 for (i = 0;i < chip->num_slots;i++) {
468 slot = chip->slots[i];
469 if (!slot)
470 continue;
471
472 ret = sdhci_resume_host(slot->host);
473 if (ret)
474 return ret;
475 }
476
477 return 0;
478}
479
480#else /* CONFIG_PM */
481
482#define sdhci_pci_suspend NULL
483#define sdhci_pci_resume NULL
484
485#endif /* CONFIG_PM */
486
487/*****************************************************************************\
488 * *
489 * Device probing/removal *
490 * *
491\*****************************************************************************/
492
493static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
494 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
495{
496 struct sdhci_pci_slot *slot;
497 struct sdhci_host *host;
498
499 resource_size_t addr;
500
501 int ret;
502
503 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
504 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
505 return ERR_PTR(-ENODEV);
506 }
507
508 if (pci_resource_len(pdev, bar) != 0x100) {
509 dev_err(&pdev->dev, "Invalid iomem size. You may "
510 "experience problems.\n");
511 }
512
513 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
514 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
515 return ERR_PTR(-ENODEV);
516 }
517
518 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
519 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
520 return ERR_PTR(-ENODEV);
521 }
522
523 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
524 if (IS_ERR(host)) {
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200525 dev_err(&pdev->dev, "cannot allocate host\n");
526 return ERR_PTR(PTR_ERR(host));
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100527 }
528
529 slot = sdhci_priv(host);
530
531 slot->chip = chip;
532 slot->host = host;
533 slot->pci_bar = bar;
534
535 host->hw_name = "PCI";
536 host->ops = &sdhci_pci_ops;
537 host->quirks = chip->quirks;
538
539 host->irq = pdev->irq;
540
541 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
542 if (ret) {
543 dev_err(&pdev->dev, "cannot request region\n");
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200544 goto free;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100545 }
546
547 addr = pci_resource_start(pdev, bar);
Arjan van de Ven092f82e2008-09-28 16:15:56 -0700548 host->ioaddr = pci_ioremap_bar(pdev, bar);
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100549 if (!host->ioaddr) {
550 dev_err(&pdev->dev, "failed to remap registers\n");
551 goto release;
552 }
553
Pierre Ossman44894282008-04-04 19:36:59 +0200554 if (chip->fixes && chip->fixes->probe_slot) {
555 ret = chip->fixes->probe_slot(slot);
556 if (ret)
557 goto unmap;
558 }
559
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100560 ret = sdhci_add_host(host);
561 if (ret)
Pierre Ossman44894282008-04-04 19:36:59 +0200562 goto remove;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100563
564 return slot;
565
Pierre Ossman44894282008-04-04 19:36:59 +0200566remove:
567 if (chip->fixes && chip->fixes->remove_slot)
Pierre Ossman1e728592008-04-16 19:13:13 +0200568 chip->fixes->remove_slot(slot, 0);
Pierre Ossman44894282008-04-04 19:36:59 +0200569
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100570unmap:
571 iounmap(host->ioaddr);
572
573release:
574 pci_release_region(pdev, bar);
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200575
576free:
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100577 sdhci_free_host(host);
578
579 return ERR_PTR(ret);
580}
581
582static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
583{
Pierre Ossman1e728592008-04-16 19:13:13 +0200584 int dead;
585 u32 scratch;
586
587 dead = 0;
588 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
589 if (scratch == (u32)-1)
590 dead = 1;
591
592 sdhci_remove_host(slot->host, dead);
Pierre Ossman44894282008-04-04 19:36:59 +0200593
594 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
Pierre Ossman1e728592008-04-16 19:13:13 +0200595 slot->chip->fixes->remove_slot(slot, dead);
Pierre Ossman44894282008-04-04 19:36:59 +0200596
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100597 pci_release_region(slot->chip->pdev, slot->pci_bar);
Pierre Ossman44894282008-04-04 19:36:59 +0200598
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100599 sdhci_free_host(slot->host);
600}
601
602static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
603 const struct pci_device_id *ent)
604{
605 struct sdhci_pci_chip *chip;
606 struct sdhci_pci_slot *slot;
607
608 u8 slots, rev, first_bar;
609 int ret, i;
610
611 BUG_ON(pdev == NULL);
612 BUG_ON(ent == NULL);
613
614 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
615
616 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
617 (int)pdev->vendor, (int)pdev->device, (int)rev);
618
619 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
620 if (ret)
621 return ret;
622
623 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
624 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
625 if (slots == 0)
626 return -ENODEV;
627
628 BUG_ON(slots > MAX_SLOTS);
629
630 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
631 if (ret)
632 return ret;
633
634 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
635
636 if (first_bar > 5) {
637 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
638 return -ENODEV;
639 }
640
641 ret = pci_enable_device(pdev);
642 if (ret)
643 return ret;
644
645 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
646 if (!chip) {
647 ret = -ENOMEM;
648 goto err;
649 }
650
651 chip->pdev = pdev;
Pierre Ossman22606402008-03-23 19:33:23 +0100652 chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data;
653 if (chip->fixes)
654 chip->quirks = chip->fixes->quirks;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100655 chip->num_slots = slots;
656
657 pci_set_drvdata(pdev, chip);
658
Pierre Ossman22606402008-03-23 19:33:23 +0100659 if (chip->fixes && chip->fixes->probe) {
660 ret = chip->fixes->probe(chip);
661 if (ret)
662 goto free;
663 }
664
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100665 for (i = 0;i < slots;i++) {
666 slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
667 if (IS_ERR(slot)) {
668 for (i--;i >= 0;i--)
669 sdhci_pci_remove_slot(chip->slots[i]);
670 ret = PTR_ERR(slot);
671 goto free;
672 }
673
674 chip->slots[i] = slot;
675 }
676
677 return 0;
678
679free:
680 pci_set_drvdata(pdev, NULL);
681 kfree(chip);
682
683err:
684 pci_disable_device(pdev);
685 return ret;
686}
687
688static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
689{
690 int i;
691 struct sdhci_pci_chip *chip;
692
693 chip = pci_get_drvdata(pdev);
694
695 if (chip) {
696 for (i = 0;i < chip->num_slots; i++)
697 sdhci_pci_remove_slot(chip->slots[i]);
698
699 pci_set_drvdata(pdev, NULL);
700 kfree(chip);
701 }
702
703 pci_disable_device(pdev);
704}
705
706static struct pci_driver sdhci_driver = {
707 .name = "sdhci-pci",
708 .id_table = pci_ids,
709 .probe = sdhci_pci_probe,
710 .remove = __devexit_p(sdhci_pci_remove),
711 .suspend = sdhci_pci_suspend,
712 .resume = sdhci_pci_resume,
713};
714
715/*****************************************************************************\
716 * *
717 * Driver init/exit *
718 * *
719\*****************************************************************************/
720
721static int __init sdhci_drv_init(void)
722{
723 return pci_register_driver(&sdhci_driver);
724}
725
726static void __exit sdhci_drv_exit(void)
727{
728 pci_unregister_driver(&sdhci_driver);
729}
730
731module_init(sdhci_drv_init);
732module_exit(sdhci_drv_exit);
733
Pierre Ossman32710e82009-04-08 20:14:54 +0200734MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100735MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
736MODULE_LICENSE("GPL");