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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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090019#include <linux/slab.h>
Maxim Levitskyccc92c22010-08-10 18:01:42 -070020#include <linux/device.h>
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010021
22#include <linux/mmc/host.h>
23
24#include <asm/scatterlist.h>
25#include <asm/io.h>
26
27#include "sdhci.h"
28
29/*
30 * PCI registers
31 */
32
33#define PCI_SDHCI_IFPIO 0x00
34#define PCI_SDHCI_IFDMA 0x01
35#define PCI_SDHCI_IFVENDOR 0x02
36
37#define PCI_SLOT_INFO 0x40 /* 8 bits */
38#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
39#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
40
41#define MAX_SLOTS 8
42
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010043struct sdhci_pci_chip;
Pierre Ossman44894282008-04-04 19:36:59 +020044struct sdhci_pci_slot;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010045
Pierre Ossman22606402008-03-23 19:33:23 +010046struct sdhci_pci_fixes {
47 unsigned int quirks;
48
49 int (*probe)(struct sdhci_pci_chip*);
Pierre Ossman45211e22008-03-24 13:09:09 +010050
Pierre Ossman44894282008-04-04 19:36:59 +020051 int (*probe_slot)(struct sdhci_pci_slot*);
Pierre Ossman1e728592008-04-16 19:13:13 +020052 void (*remove_slot)(struct sdhci_pci_slot*, int);
Pierre Ossman44894282008-04-04 19:36:59 +020053
54 int (*suspend)(struct sdhci_pci_chip*,
55 pm_message_t);
Pierre Ossman45211e22008-03-24 13:09:09 +010056 int (*resume)(struct sdhci_pci_chip*);
Pierre Ossman22606402008-03-23 19:33:23 +010057};
58
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010059struct sdhci_pci_slot {
60 struct sdhci_pci_chip *chip;
61 struct sdhci_host *host;
62
63 int pci_bar;
64};
65
66struct sdhci_pci_chip {
67 struct pci_dev *pdev;
Pierre Ossman22606402008-03-23 19:33:23 +010068
69 unsigned int quirks;
70 const struct sdhci_pci_fixes *fixes;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +010071
72 int num_slots; /* Slots on controller */
73 struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
74};
75
Pierre Ossman22606402008-03-23 19:33:23 +010076
77/*****************************************************************************\
78 * *
79 * Hardware specific quirk handling *
80 * *
81\*****************************************************************************/
82
83static int ricoh_probe(struct sdhci_pci_chip *chip)
84{
Chris Ballc99436f2009-09-22 16:45:22 -070085 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
86 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
Pierre Ossman22606402008-03-23 19:33:23 +010087 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
Maxim Levitskyccc92c22010-08-10 18:01:42 -070088 return 0;
89}
Pierre Ossman22606402008-03-23 19:33:23 +010090
Maxim Levitskyccc92c22010-08-10 18:01:42 -070091static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
92{
93 slot->host->caps =
94 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
95 & SDHCI_TIMEOUT_CLK_MASK) |
96
97 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
98 & SDHCI_CLOCK_BASE_MASK) |
99
100 SDHCI_TIMEOUT_CLK_UNIT |
101 SDHCI_CAN_VDD_330 |
102 SDHCI_CAN_DO_SDMA;
103 return 0;
104}
105
106static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
107{
108 /* Apply a delay to allow controller to settle */
109 /* Otherwise it becomes confused if card state changed
110 during suspend */
111 msleep(500);
Pierre Ossman22606402008-03-23 19:33:23 +0100112 return 0;
113}
114
115static const struct sdhci_pci_fixes sdhci_ricoh = {
116 .probe = ricoh_probe,
Vasily Khoruzhick84938292010-03-05 13:43:46 -0800117 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
118 SDHCI_QUIRK_FORCE_DMA |
119 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
Pierre Ossman22606402008-03-23 19:33:23 +0100120};
121
Maxim Levitskyccc92c22010-08-10 18:01:42 -0700122static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
123 .probe_slot = ricoh_mmc_probe_slot,
124 .resume = ricoh_mmc_resume,
125 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
126 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
127 SDHCI_QUIRK_NO_CARD_NO_RESET |
128 SDHCI_QUIRK_MISSING_CAPS
129};
130
Pierre Ossman22606402008-03-23 19:33:23 +0100131static const struct sdhci_pci_fixes sdhci_ene_712 = {
132 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
133 SDHCI_QUIRK_BROKEN_DMA,
134};
135
136static const struct sdhci_pci_fixes sdhci_ene_714 = {
137 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
138 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
139 SDHCI_QUIRK_BROKEN_DMA,
140};
141
142static const struct sdhci_pci_fixes sdhci_cafe = {
143 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
Andres Salomona0874892009-03-02 21:48:20 +0100144 SDHCI_QUIRK_NO_BUSY_IRQ |
Pierre Ossmanee53ab52008-07-05 00:25:15 +0200145 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
Pierre Ossman22606402008-03-23 19:33:23 +0100146};
147
Pierre Ossman45211e22008-03-24 13:09:09 +0100148static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
149{
150 u8 scratch;
151 int ret;
152
153 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
154 if (ret)
155 return ret;
156
157 /*
158 * Turn PMOS on [bit 0], set over current detection to 2.4 V
159 * [bit 1:2] and enable over current debouncing [bit 6].
160 */
161 if (on)
162 scratch |= 0x47;
163 else
164 scratch &= ~0x47;
165
166 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
167 if (ret)
168 return ret;
169
170 return 0;
171}
172
173static int jmicron_probe(struct sdhci_pci_chip *chip)
174{
175 int ret;
176
Pierre Ossman93fc48c2008-06-28 18:21:41 +0200177 if (chip->pdev->revision == 0) {
178 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
179 SDHCI_QUIRK_32BIT_DMA_SIZE |
Pierre Ossman2134a922008-06-28 18:28:51 +0200180 SDHCI_QUIRK_32BIT_ADMA_SIZE |
Pierre Ossman4a3cba32008-07-29 00:11:16 +0200181 SDHCI_QUIRK_RESET_AFTER_REQUEST |
Pierre Ossman86a6a872009-02-02 21:13:49 +0100182 SDHCI_QUIRK_BROKEN_SMALL_PIO;
Pierre Ossman93fc48c2008-06-28 18:21:41 +0200183 }
184
Pierre Ossman45211e22008-03-24 13:09:09 +0100185 /*
Pierre Ossman44894282008-04-04 19:36:59 +0200186 * JMicron chips can have two interfaces to the same hardware
187 * in order to work around limitations in Microsoft's driver.
188 * We need to make sure we only bind to one of them.
189 *
190 * This code assumes two things:
191 *
192 * 1. The PCI code adds subfunctions in order.
193 *
194 * 2. The MMC interface has a lower subfunction number
195 * than the SD interface.
196 */
197 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) {
198 struct pci_dev *sd_dev;
199
200 sd_dev = NULL;
201 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
202 PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) {
203 if ((PCI_SLOT(chip->pdev->devfn) ==
204 PCI_SLOT(sd_dev->devfn)) &&
205 (chip->pdev->bus == sd_dev->bus))
206 break;
207 }
208
209 if (sd_dev) {
210 pci_dev_put(sd_dev);
211 dev_info(&chip->pdev->dev, "Refusing to bind to "
212 "secondary interface.\n");
213 return -ENODEV;
214 }
215 }
216
217 /*
Pierre Ossman45211e22008-03-24 13:09:09 +0100218 * JMicron chips need a bit of a nudge to enable the power
219 * output pins.
220 */
221 ret = jmicron_pmos(chip, 1);
222 if (ret) {
223 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
224 return ret;
225 }
226
227 return 0;
228}
229
Pierre Ossman44894282008-04-04 19:36:59 +0200230static void jmicron_enable_mmc(struct sdhci_host *host, int on)
231{
232 u8 scratch;
233
234 scratch = readb(host->ioaddr + 0xC0);
235
236 if (on)
237 scratch |= 0x01;
238 else
239 scratch &= ~0x01;
240
241 writeb(scratch, host->ioaddr + 0xC0);
242}
243
244static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
245{
Pierre Ossman2134a922008-06-28 18:28:51 +0200246 if (slot->chip->pdev->revision == 0) {
247 u16 version;
248
249 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
250 version = (version & SDHCI_VENDOR_VER_MASK) >>
251 SDHCI_VENDOR_VER_SHIFT;
252
253 /*
254 * Older versions of the chip have lots of nasty glitches
255 * in the ADMA engine. It's best just to avoid it
256 * completely.
257 */
258 if (version < 0xAC)
259 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
260 }
261
Pierre Ossman44894282008-04-04 19:36:59 +0200262 /*
263 * The secondary interface requires a bit set to get the
264 * interrupts.
265 */
266 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
267 jmicron_enable_mmc(slot->host, 1);
268
269 return 0;
270}
271
Pierre Ossman1e728592008-04-16 19:13:13 +0200272static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
Pierre Ossman44894282008-04-04 19:36:59 +0200273{
Pierre Ossman1e728592008-04-16 19:13:13 +0200274 if (dead)
275 return;
276
Pierre Ossman44894282008-04-04 19:36:59 +0200277 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
278 jmicron_enable_mmc(slot->host, 0);
279}
280
281static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state)
282{
283 int i;
284
285 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
286 for (i = 0;i < chip->num_slots;i++)
287 jmicron_enable_mmc(chip->slots[i]->host, 0);
288 }
289
290 return 0;
291}
292
Pierre Ossman45211e22008-03-24 13:09:09 +0100293static int jmicron_resume(struct sdhci_pci_chip *chip)
294{
Pierre Ossman44894282008-04-04 19:36:59 +0200295 int ret, i;
296
297 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
298 for (i = 0;i < chip->num_slots;i++)
299 jmicron_enable_mmc(chip->slots[i]->host, 1);
300 }
Pierre Ossman45211e22008-03-24 13:09:09 +0100301
302 ret = jmicron_pmos(chip, 1);
303 if (ret) {
304 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
305 return ret;
306 }
307
308 return 0;
309}
310
Pierre Ossman22606402008-03-23 19:33:23 +0100311static const struct sdhci_pci_fixes sdhci_jmicron = {
Pierre Ossman45211e22008-03-24 13:09:09 +0100312 .probe = jmicron_probe,
313
Pierre Ossman44894282008-04-04 19:36:59 +0200314 .probe_slot = jmicron_probe_slot,
315 .remove_slot = jmicron_remove_slot,
316
317 .suspend = jmicron_suspend,
Pierre Ossman45211e22008-03-24 13:09:09 +0100318 .resume = jmicron_resume,
Pierre Ossman22606402008-03-23 19:33:23 +0100319};
320
Nicolas Pitrea7a61862009-12-14 18:01:26 -0800321/* SysKonnect CardBus2SDIO extra registers */
322#define SYSKT_CTRL 0x200
323#define SYSKT_RDFIFO_STAT 0x204
324#define SYSKT_WRFIFO_STAT 0x208
325#define SYSKT_POWER_DATA 0x20c
326#define SYSKT_POWER_330 0xef
327#define SYSKT_POWER_300 0xf8
328#define SYSKT_POWER_184 0xcc
329#define SYSKT_POWER_CMD 0x20d
330#define SYSKT_POWER_START (1 << 7)
331#define SYSKT_POWER_STATUS 0x20e
332#define SYSKT_POWER_STATUS_OK (1 << 0)
333#define SYSKT_BOARD_REV 0x210
334#define SYSKT_CHIP_REV 0x211
335#define SYSKT_CONF_DATA 0x212
336#define SYSKT_CONF_DATA_1V8 (1 << 2)
337#define SYSKT_CONF_DATA_2V5 (1 << 1)
338#define SYSKT_CONF_DATA_3V3 (1 << 0)
339
340static int syskt_probe(struct sdhci_pci_chip *chip)
341{
342 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
343 chip->pdev->class &= ~0x0000FF;
344 chip->pdev->class |= PCI_SDHCI_IFDMA;
345 }
346 return 0;
347}
348
349static int syskt_probe_slot(struct sdhci_pci_slot *slot)
350{
351 int tm, ps;
352
353 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
354 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
355 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
356 "board rev %d.%d, chip rev %d.%d\n",
357 board_rev >> 4, board_rev & 0xf,
358 chip_rev >> 4, chip_rev & 0xf);
359 if (chip_rev >= 0x20)
360 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
361
362 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
363 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
364 udelay(50);
365 tm = 10; /* Wait max 1 ms */
366 do {
367 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
368 if (ps & SYSKT_POWER_STATUS_OK)
369 break;
370 udelay(100);
371 } while (--tm);
372 if (!tm) {
373 dev_err(&slot->chip->pdev->dev,
374 "power regulator never stabilized");
375 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
376 return -ENODEV;
377 }
378
379 return 0;
380}
381
382static const struct sdhci_pci_fixes sdhci_syskt = {
383 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
384 .probe = syskt_probe,
385 .probe_slot = syskt_probe_slot,
386};
387
Harald Welte557b0692009-06-18 16:53:38 +0200388static int via_probe(struct sdhci_pci_chip *chip)
389{
390 if (chip->pdev->revision == 0x10)
391 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
392
393 return 0;
394}
395
396static const struct sdhci_pci_fixes sdhci_via = {
397 .probe = via_probe,
398};
399
Pierre Ossman22606402008-03-23 19:33:23 +0100400static const struct pci_device_id pci_ids[] __devinitdata = {
401 {
402 .vendor = PCI_VENDOR_ID_RICOH,
403 .device = PCI_DEVICE_ID_RICOH_R5C822,
404 .subvendor = PCI_ANY_ID,
405 .subdevice = PCI_ANY_ID,
406 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
407 },
408
409 {
Maxim Levitskyccc92c22010-08-10 18:01:42 -0700410 .vendor = PCI_VENDOR_ID_RICOH,
411 .device = 0x843,
412 .subvendor = PCI_ANY_ID,
413 .subdevice = PCI_ANY_ID,
414 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
415 },
416
417 {
Pablo Castillo568133e2010-08-10 18:02:01 -0700418 .vendor = PCI_VENDOR_ID_RICOH,
419 .device = 0xe822,
420 .subvendor = PCI_ANY_ID,
421 .subdevice = PCI_ANY_ID,
422 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
423 },
424
425 {
Pierre Ossman22606402008-03-23 19:33:23 +0100426 .vendor = PCI_VENDOR_ID_ENE,
427 .device = PCI_DEVICE_ID_ENE_CB712_SD,
428 .subvendor = PCI_ANY_ID,
429 .subdevice = PCI_ANY_ID,
430 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
431 },
432
433 {
434 .vendor = PCI_VENDOR_ID_ENE,
435 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
436 .subvendor = PCI_ANY_ID,
437 .subdevice = PCI_ANY_ID,
438 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
439 },
440
441 {
442 .vendor = PCI_VENDOR_ID_ENE,
443 .device = PCI_DEVICE_ID_ENE_CB714_SD,
444 .subvendor = PCI_ANY_ID,
445 .subdevice = PCI_ANY_ID,
446 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
447 },
448
449 {
450 .vendor = PCI_VENDOR_ID_ENE,
451 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
452 .subvendor = PCI_ANY_ID,
453 .subdevice = PCI_ANY_ID,
454 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
455 },
456
457 {
458 .vendor = PCI_VENDOR_ID_MARVELL,
David Woodhouse8c5eb882008-09-03 09:45:57 +0100459 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
Pierre Ossman22606402008-03-23 19:33:23 +0100460 .subvendor = PCI_ANY_ID,
461 .subdevice = PCI_ANY_ID,
462 .driver_data = (kernel_ulong_t)&sdhci_cafe,
463 },
464
465 {
466 .vendor = PCI_VENDOR_ID_JMICRON,
467 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
468 .subvendor = PCI_ANY_ID,
469 .subdevice = PCI_ANY_ID,
470 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
471 },
472
Pierre Ossman44894282008-04-04 19:36:59 +0200473 {
474 .vendor = PCI_VENDOR_ID_JMICRON,
475 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
476 .subvendor = PCI_ANY_ID,
477 .subdevice = PCI_ANY_ID,
478 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
479 },
480
Harald Welte557b0692009-06-18 16:53:38 +0200481 {
Nicolas Pitrea7a61862009-12-14 18:01:26 -0800482 .vendor = PCI_VENDOR_ID_SYSKONNECT,
483 .device = 0x8000,
484 .subvendor = PCI_ANY_ID,
485 .subdevice = PCI_ANY_ID,
486 .driver_data = (kernel_ulong_t)&sdhci_syskt,
487 },
488
489 {
Harald Welte557b0692009-06-18 16:53:38 +0200490 .vendor = PCI_VENDOR_ID_VIA,
491 .device = 0x95d0,
492 .subvendor = PCI_ANY_ID,
493 .subdevice = PCI_ANY_ID,
494 .driver_data = (kernel_ulong_t)&sdhci_via,
495 },
496
Pierre Ossman22606402008-03-23 19:33:23 +0100497 { /* Generic SD host controller */
498 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
499 },
500
501 { /* end: all zeroes */ },
502};
503
504MODULE_DEVICE_TABLE(pci, pci_ids);
505
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100506/*****************************************************************************\
507 * *
508 * SDHCI core callbacks *
509 * *
510\*****************************************************************************/
511
512static int sdhci_pci_enable_dma(struct sdhci_host *host)
513{
514 struct sdhci_pci_slot *slot;
515 struct pci_dev *pdev;
516 int ret;
517
518 slot = sdhci_priv(host);
519 pdev = slot->chip->pdev;
520
521 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
522 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
Richard Röjforsa13abc72009-09-22 16:45:30 -0700523 (host->flags & SDHCI_USE_SDMA)) {
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100524 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
525 "doesn't fully claim to support it.\n");
526 }
527
Yang Hongyang284901a2009-04-06 19:01:15 -0700528 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100529 if (ret)
530 return ret;
531
532 pci_set_master(pdev);
533
534 return 0;
535}
536
537static struct sdhci_ops sdhci_pci_ops = {
538 .enable_dma = sdhci_pci_enable_dma,
539};
540
541/*****************************************************************************\
542 * *
543 * Suspend/resume *
544 * *
545\*****************************************************************************/
546
547#ifdef CONFIG_PM
548
549static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
550{
551 struct sdhci_pci_chip *chip;
552 struct sdhci_pci_slot *slot;
Nicolas Pitre2f4cbb32010-03-05 13:43:32 -0800553 mmc_pm_flag_t pm_flags = 0;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100554 int i, ret;
555
556 chip = pci_get_drvdata(pdev);
557 if (!chip)
558 return 0;
559
560 for (i = 0;i < chip->num_slots;i++) {
561 slot = chip->slots[i];
562 if (!slot)
563 continue;
564
565 ret = sdhci_suspend_host(slot->host, state);
566
567 if (ret) {
568 for (i--;i >= 0;i--)
569 sdhci_resume_host(chip->slots[i]->host);
570 return ret;
571 }
Nicolas Pitre2f4cbb32010-03-05 13:43:32 -0800572
573 pm_flags |= slot->host->mmc->pm_flags;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100574 }
575
Pierre Ossman44894282008-04-04 19:36:59 +0200576 if (chip->fixes && chip->fixes->suspend) {
577 ret = chip->fixes->suspend(chip, state);
578 if (ret) {
579 for (i = chip->num_slots - 1;i >= 0;i--)
580 sdhci_resume_host(chip->slots[i]->host);
581 return ret;
582 }
583 }
584
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100585 pci_save_state(pdev);
Nicolas Pitre2f4cbb32010-03-05 13:43:32 -0800586 if (pm_flags & MMC_PM_KEEP_POWER) {
587 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
588 pci_enable_wake(pdev, PCI_D3hot, 1);
589 pci_set_power_state(pdev, PCI_D3hot);
590 } else {
591 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
592 pci_disable_device(pdev);
593 pci_set_power_state(pdev, pci_choose_state(pdev, state));
594 }
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100595
596 return 0;
597}
598
599static int sdhci_pci_resume (struct pci_dev *pdev)
600{
601 struct sdhci_pci_chip *chip;
602 struct sdhci_pci_slot *slot;
603 int i, ret;
604
605 chip = pci_get_drvdata(pdev);
606 if (!chip)
607 return 0;
608
609 pci_set_power_state(pdev, PCI_D0);
610 pci_restore_state(pdev);
611 ret = pci_enable_device(pdev);
612 if (ret)
613 return ret;
614
Pierre Ossman45211e22008-03-24 13:09:09 +0100615 if (chip->fixes && chip->fixes->resume) {
616 ret = chip->fixes->resume(chip);
617 if (ret)
618 return ret;
619 }
620
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100621 for (i = 0;i < chip->num_slots;i++) {
622 slot = chip->slots[i];
623 if (!slot)
624 continue;
625
626 ret = sdhci_resume_host(slot->host);
627 if (ret)
628 return ret;
629 }
630
631 return 0;
632}
633
634#else /* CONFIG_PM */
635
636#define sdhci_pci_suspend NULL
637#define sdhci_pci_resume NULL
638
639#endif /* CONFIG_PM */
640
641/*****************************************************************************\
642 * *
643 * Device probing/removal *
644 * *
645\*****************************************************************************/
646
647static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
648 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
649{
650 struct sdhci_pci_slot *slot;
651 struct sdhci_host *host;
652
653 resource_size_t addr;
654
655 int ret;
656
657 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
658 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
659 return ERR_PTR(-ENODEV);
660 }
661
662 if (pci_resource_len(pdev, bar) != 0x100) {
663 dev_err(&pdev->dev, "Invalid iomem size. You may "
664 "experience problems.\n");
665 }
666
667 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
668 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
669 return ERR_PTR(-ENODEV);
670 }
671
672 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
673 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
674 return ERR_PTR(-ENODEV);
675 }
676
677 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
678 if (IS_ERR(host)) {
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200679 dev_err(&pdev->dev, "cannot allocate host\n");
Julia Lawalldc0fd7b2010-05-26 14:42:11 -0700680 return ERR_CAST(host);
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100681 }
682
683 slot = sdhci_priv(host);
684
685 slot->chip = chip;
686 slot->host = host;
687 slot->pci_bar = bar;
688
689 host->hw_name = "PCI";
690 host->ops = &sdhci_pci_ops;
691 host->quirks = chip->quirks;
692
693 host->irq = pdev->irq;
694
695 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
696 if (ret) {
697 dev_err(&pdev->dev, "cannot request region\n");
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200698 goto free;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100699 }
700
701 addr = pci_resource_start(pdev, bar);
Arjan van de Ven092f82e2008-09-28 16:15:56 -0700702 host->ioaddr = pci_ioremap_bar(pdev, bar);
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100703 if (!host->ioaddr) {
704 dev_err(&pdev->dev, "failed to remap registers\n");
705 goto release;
706 }
707
Pierre Ossman44894282008-04-04 19:36:59 +0200708 if (chip->fixes && chip->fixes->probe_slot) {
709 ret = chip->fixes->probe_slot(slot);
710 if (ret)
711 goto unmap;
712 }
713
Nicolas Pitre2f4cbb32010-03-05 13:43:32 -0800714 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
715
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100716 ret = sdhci_add_host(host);
717 if (ret)
Pierre Ossman44894282008-04-04 19:36:59 +0200718 goto remove;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100719
720 return slot;
721
Pierre Ossman44894282008-04-04 19:36:59 +0200722remove:
723 if (chip->fixes && chip->fixes->remove_slot)
Pierre Ossman1e728592008-04-16 19:13:13 +0200724 chip->fixes->remove_slot(slot, 0);
Pierre Ossman44894282008-04-04 19:36:59 +0200725
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100726unmap:
727 iounmap(host->ioaddr);
728
729release:
730 pci_release_region(pdev, bar);
Dan Carpenterc60a32c2009-04-10 23:31:10 +0200731
732free:
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100733 sdhci_free_host(host);
734
735 return ERR_PTR(ret);
736}
737
738static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
739{
Pierre Ossman1e728592008-04-16 19:13:13 +0200740 int dead;
741 u32 scratch;
742
743 dead = 0;
744 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
745 if (scratch == (u32)-1)
746 dead = 1;
747
748 sdhci_remove_host(slot->host, dead);
Pierre Ossman44894282008-04-04 19:36:59 +0200749
750 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
Pierre Ossman1e728592008-04-16 19:13:13 +0200751 slot->chip->fixes->remove_slot(slot, dead);
Pierre Ossman44894282008-04-04 19:36:59 +0200752
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100753 pci_release_region(slot->chip->pdev, slot->pci_bar);
Pierre Ossman44894282008-04-04 19:36:59 +0200754
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100755 sdhci_free_host(slot->host);
756}
757
758static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
759 const struct pci_device_id *ent)
760{
761 struct sdhci_pci_chip *chip;
762 struct sdhci_pci_slot *slot;
763
764 u8 slots, rev, first_bar;
765 int ret, i;
766
767 BUG_ON(pdev == NULL);
768 BUG_ON(ent == NULL);
769
770 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
771
772 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
773 (int)pdev->vendor, (int)pdev->device, (int)rev);
774
775 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
776 if (ret)
777 return ret;
778
779 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
780 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
781 if (slots == 0)
782 return -ENODEV;
783
784 BUG_ON(slots > MAX_SLOTS);
785
786 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
787 if (ret)
788 return ret;
789
790 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
791
792 if (first_bar > 5) {
793 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
794 return -ENODEV;
795 }
796
797 ret = pci_enable_device(pdev);
798 if (ret)
799 return ret;
800
801 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
802 if (!chip) {
803 ret = -ENOMEM;
804 goto err;
805 }
806
807 chip->pdev = pdev;
Pierre Ossman22606402008-03-23 19:33:23 +0100808 chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data;
809 if (chip->fixes)
810 chip->quirks = chip->fixes->quirks;
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100811 chip->num_slots = slots;
812
813 pci_set_drvdata(pdev, chip);
814
Pierre Ossman22606402008-03-23 19:33:23 +0100815 if (chip->fixes && chip->fixes->probe) {
816 ret = chip->fixes->probe(chip);
817 if (ret)
818 goto free;
819 }
820
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100821 for (i = 0;i < slots;i++) {
822 slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
823 if (IS_ERR(slot)) {
824 for (i--;i >= 0;i--)
825 sdhci_pci_remove_slot(chip->slots[i]);
826 ret = PTR_ERR(slot);
827 goto free;
828 }
829
830 chip->slots[i] = slot;
831 }
832
833 return 0;
834
835free:
836 pci_set_drvdata(pdev, NULL);
837 kfree(chip);
838
839err:
840 pci_disable_device(pdev);
841 return ret;
842}
843
844static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
845{
846 int i;
847 struct sdhci_pci_chip *chip;
848
849 chip = pci_get_drvdata(pdev);
850
851 if (chip) {
852 for (i = 0;i < chip->num_slots; i++)
853 sdhci_pci_remove_slot(chip->slots[i]);
854
855 pci_set_drvdata(pdev, NULL);
856 kfree(chip);
857 }
858
859 pci_disable_device(pdev);
860}
861
862static struct pci_driver sdhci_driver = {
863 .name = "sdhci-pci",
864 .id_table = pci_ids,
865 .probe = sdhci_pci_probe,
866 .remove = __devexit_p(sdhci_pci_remove),
867 .suspend = sdhci_pci_suspend,
868 .resume = sdhci_pci_resume,
869};
870
871/*****************************************************************************\
872 * *
873 * Driver init/exit *
874 * *
875\*****************************************************************************/
876
877static int __init sdhci_drv_init(void)
878{
879 return pci_register_driver(&sdhci_driver);
880}
881
882static void __exit sdhci_drv_exit(void)
883{
884 pci_unregister_driver(&sdhci_driver);
885}
886
887module_init(sdhci_drv_init);
888module_exit(sdhci_drv_exit);
889
Pierre Ossman32710e82009-04-08 20:14:54 +0200890MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
Pierre Ossmanb8c86fc2008-03-18 17:35:49 +0100891MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
892MODULE_LICENSE("GPL");