1 /* 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/module.h>
18 #include <linux/pci.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/device.h>
22 #include <linux/mmc/host.h>
23 #include <linux/scatterlist.h>
24 #include <linux/io.h>
25 #include <linux/gpio.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/mmc/sdhci-pci-data.h>
28
29 #include "sdhci.h"
30
31 /*
32 * PCI device IDs
33 */
34 #define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809
35 #define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a
36
37 /*
38 * PCI registers
39 */
40
41 #define PCI_SDHCI_IFPIO 0x00
42 #define PCI_SDHCI_IFDMA 0x01
43 #define PCI_SDHCI_IFVENDOR 0x02
44
45 #define PCI_SLOT_INFO 0x40 /* 8 bits */
46 #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
47 #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
48
49 #define MAX_SLOTS 8
50
51 struct sdhci_pci_chip;
52 struct sdhci_pci_slot;
53
54 struct sdhci_pci_fixes {
55 unsigned int quirks;
56 unsigned int quirks2;
57 bool allow_runtime_pm;
58
59 int (*probe) (struct sdhci_pci_chip *);
60
61 int (*probe_slot) (struct sdhci_pci_slot *);
62 void (*remove_slot) (struct sdhci_pci_slot *, int);
63
64 int (*suspend) (struct sdhci_pci_chip *);
65 int (*resume) (struct sdhci_pci_chip *);
66 };
67
68 struct sdhci_pci_slot {
69 struct sdhci_pci_chip *chip;
70 struct sdhci_host *host;
71 struct sdhci_pci_data *data;
72
73 int pci_bar;
74 int rst_n_gpio;
75 int cd_gpio;
76 int cd_irq;
77 };
78
79 struct sdhci_pci_chip {
80 struct pci_dev *pdev;
81
82 unsigned int quirks;
83 unsigned int quirks2;
84 bool allow_runtime_pm;
85 const struct sdhci_pci_fixes *fixes;
86
87 int num_slots; /* Slots on controller */
88 struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
89 };
90
91
92 /*****************************************************************************\
93 * *
94 * Hardware specific quirk handling *
95 * *
96 \*****************************************************************************/
97
ricoh_probe(struct sdhci_pci_chip * chip)98 static int ricoh_probe(struct sdhci_pci_chip *chip)
99 {
100 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
101 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
102 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
103 return 0;
104 }
105
ricoh_mmc_probe_slot(struct sdhci_pci_slot * slot)106 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
107 {
108 slot->host->caps =
109 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
110 & SDHCI_TIMEOUT_CLK_MASK) |
111
112 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
113 & SDHCI_CLOCK_BASE_MASK) |
114
115 SDHCI_TIMEOUT_CLK_UNIT |
116 SDHCI_CAN_VDD_330 |
117 SDHCI_CAN_DO_SDMA;
118 return 0;
119 }
120
ricoh_mmc_resume(struct sdhci_pci_chip * chip)121 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
122 {
123 /* Apply a delay to allow controller to settle */
124 /* Otherwise it becomes confused if card state changed
125 during suspend */
126 msleep(500);
127 return 0;
128 }
129
130 static const struct sdhci_pci_fixes sdhci_ricoh = {
131 .probe = ricoh_probe,
132 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
133 SDHCI_QUIRK_FORCE_DMA |
134 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
135 };
136
137 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
138 .probe_slot = ricoh_mmc_probe_slot,
139 .resume = ricoh_mmc_resume,
140 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
141 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
142 SDHCI_QUIRK_NO_CARD_NO_RESET |
143 SDHCI_QUIRK_MISSING_CAPS
144 };
145
146 static const struct sdhci_pci_fixes sdhci_ene_712 = {
147 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
148 SDHCI_QUIRK_BROKEN_DMA,
149 };
150
151 static const struct sdhci_pci_fixes sdhci_ene_714 = {
152 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
153 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
154 SDHCI_QUIRK_BROKEN_DMA,
155 };
156
157 static const struct sdhci_pci_fixes sdhci_cafe = {
158 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
159 SDHCI_QUIRK_NO_BUSY_IRQ |
160 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
161 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
162 };
163
mrst_hc_probe_slot(struct sdhci_pci_slot * slot)164 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
165 {
166 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
167 return 0;
168 }
169
170 /*
171 * ADMA operation is disabled for Moorestown platform due to
172 * hardware bugs.
173 */
mrst_hc_probe(struct sdhci_pci_chip * chip)174 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
175 {
176 /*
177 * slots number is fixed here for MRST as SDIO3/5 are never used and
178 * have hardware bugs.
179 */
180 chip->num_slots = 1;
181 return 0;
182 }
183
pch_hc_probe_slot(struct sdhci_pci_slot * slot)184 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
185 {
186 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
187 return 0;
188 }
189
190 #ifdef CONFIG_PM_RUNTIME
191
sdhci_pci_sd_cd(int irq,void * dev_id)192 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
193 {
194 struct sdhci_pci_slot *slot = dev_id;
195 struct sdhci_host *host = slot->host;
196
197 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
198 return IRQ_HANDLED;
199 }
200
sdhci_pci_add_own_cd(struct sdhci_pci_slot * slot)201 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
202 {
203 int err, irq, gpio = slot->cd_gpio;
204
205 slot->cd_gpio = -EINVAL;
206 slot->cd_irq = -EINVAL;
207
208 if (!gpio_is_valid(gpio))
209 return;
210
211 err = gpio_request(gpio, "sd_cd");
212 if (err < 0)
213 goto out;
214
215 err = gpio_direction_input(gpio);
216 if (err < 0)
217 goto out_free;
218
219 irq = gpio_to_irq(gpio);
220 if (irq < 0)
221 goto out_free;
222
223 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
224 IRQF_TRIGGER_FALLING, "sd_cd", slot);
225 if (err)
226 goto out_free;
227
228 slot->cd_gpio = gpio;
229 slot->cd_irq = irq;
230
231 return;
232
233 out_free:
234 gpio_free(gpio);
235 out:
236 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
237 }
238
sdhci_pci_remove_own_cd(struct sdhci_pci_slot * slot)239 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
240 {
241 if (slot->cd_irq >= 0)
242 free_irq(slot->cd_irq, slot);
243 if (gpio_is_valid(slot->cd_gpio))
244 gpio_free(slot->cd_gpio);
245 }
246
247 #else
248
sdhci_pci_add_own_cd(struct sdhci_pci_slot * slot)249 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
250 {
251 }
252
sdhci_pci_remove_own_cd(struct sdhci_pci_slot * slot)253 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
254 {
255 }
256
257 #endif
258
mfd_emmc_probe_slot(struct sdhci_pci_slot * slot)259 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
260 {
261 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
262 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
263 MMC_CAP2_HC_ERASE_SZ;
264 return 0;
265 }
266
mfd_sdio_probe_slot(struct sdhci_pci_slot * slot)267 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
268 {
269 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
270 return 0;
271 }
272
273 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
274 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
275 .probe_slot = mrst_hc_probe_slot,
276 };
277
278 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
279 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
280 .probe = mrst_hc_probe,
281 };
282
283 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
284 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
285 .allow_runtime_pm = true,
286 };
287
288 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
289 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
290 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
291 .allow_runtime_pm = true,
292 .probe_slot = mfd_sdio_probe_slot,
293 };
294
295 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
296 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
297 .allow_runtime_pm = true,
298 .probe_slot = mfd_emmc_probe_slot,
299 };
300
301 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
302 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
303 .probe_slot = pch_hc_probe_slot,
304 };
305
306 /* O2Micro extra registers */
307 #define O2_SD_LOCK_WP 0xD3
308 #define O2_SD_MULTI_VCC3V 0xEE
309 #define O2_SD_CLKREQ 0xEC
310 #define O2_SD_CAPS 0xE0
311 #define O2_SD_ADMA1 0xE2
312 #define O2_SD_ADMA2 0xE7
313 #define O2_SD_INF_MOD 0xF1
314
o2_probe(struct sdhci_pci_chip * chip)315 static int o2_probe(struct sdhci_pci_chip *chip)
316 {
317 int ret;
318 u8 scratch;
319
320 switch (chip->pdev->device) {
321 case PCI_DEVICE_ID_O2_8220:
322 case PCI_DEVICE_ID_O2_8221:
323 case PCI_DEVICE_ID_O2_8320:
324 case PCI_DEVICE_ID_O2_8321:
325 /* This extra setup is required due to broken ADMA. */
326 ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
327 if (ret)
328 return ret;
329 scratch &= 0x7f;
330 pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
331
332 /* Set Multi 3 to VCC3V# */
333 pci_write_config_byte(chip->pdev, O2_SD_MULTI_VCC3V, 0x08);
334
335 /* Disable CLK_REQ# support after media DET */
336 ret = pci_read_config_byte(chip->pdev, O2_SD_CLKREQ, &scratch);
337 if (ret)
338 return ret;
339 scratch |= 0x20;
340 pci_write_config_byte(chip->pdev, O2_SD_CLKREQ, scratch);
341
342 /* Choose capabilities, enable SDMA. We have to write 0x01
343 * to the capabilities register first to unlock it.
344 */
345 ret = pci_read_config_byte(chip->pdev, O2_SD_CAPS, &scratch);
346 if (ret)
347 return ret;
348 scratch |= 0x01;
349 pci_write_config_byte(chip->pdev, O2_SD_CAPS, scratch);
350 pci_write_config_byte(chip->pdev, O2_SD_CAPS, 0x73);
351
352 /* Disable ADMA1/2 */
353 pci_write_config_byte(chip->pdev, O2_SD_ADMA1, 0x39);
354 pci_write_config_byte(chip->pdev, O2_SD_ADMA2, 0x08);
355
356 /* Disable the infinite transfer mode */
357 ret = pci_read_config_byte(chip->pdev, O2_SD_INF_MOD, &scratch);
358 if (ret)
359 return ret;
360 scratch |= 0x08;
361 pci_write_config_byte(chip->pdev, O2_SD_INF_MOD, scratch);
362
363 /* Lock WP */
364 ret = pci_read_config_byte(chip->pdev, O2_SD_LOCK_WP, &scratch);
365 if (ret)
366 return ret;
367 scratch |= 0x80;
368 pci_write_config_byte(chip->pdev, O2_SD_LOCK_WP, scratch);
369 }
370
371 return 0;
372 }
373
jmicron_pmos(struct sdhci_pci_chip * chip,int on)374 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
375 {
376 u8 scratch;
377 int ret;
378
379 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
380 if (ret)
381 return ret;
382
383 /*
384 * Turn PMOS on [bit 0], set over current detection to 2.4 V
385 * [bit 1:2] and enable over current debouncing [bit 6].
386 */
387 if (on)
388 scratch |= 0x47;
389 else
390 scratch &= ~0x47;
391
392 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
393 if (ret)
394 return ret;
395
396 return 0;
397 }
398
jmicron_probe(struct sdhci_pci_chip * chip)399 static int jmicron_probe(struct sdhci_pci_chip *chip)
400 {
401 int ret;
402 u16 mmcdev = 0;
403
404 if (chip->pdev->revision == 0) {
405 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
406 SDHCI_QUIRK_32BIT_DMA_SIZE |
407 SDHCI_QUIRK_32BIT_ADMA_SIZE |
408 SDHCI_QUIRK_RESET_AFTER_REQUEST |
409 SDHCI_QUIRK_BROKEN_SMALL_PIO;
410 }
411
412 /*
413 * JMicron chips can have two interfaces to the same hardware
414 * in order to work around limitations in Microsoft's driver.
415 * We need to make sure we only bind to one of them.
416 *
417 * This code assumes two things:
418 *
419 * 1. The PCI code adds subfunctions in order.
420 *
421 * 2. The MMC interface has a lower subfunction number
422 * than the SD interface.
423 */
424 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
425 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
426 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
427 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
428
429 if (mmcdev) {
430 struct pci_dev *sd_dev;
431
432 sd_dev = NULL;
433 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
434 mmcdev, sd_dev)) != NULL) {
435 if ((PCI_SLOT(chip->pdev->devfn) ==
436 PCI_SLOT(sd_dev->devfn)) &&
437 (chip->pdev->bus == sd_dev->bus))
438 break;
439 }
440
441 if (sd_dev) {
442 pci_dev_put(sd_dev);
443 dev_info(&chip->pdev->dev, "Refusing to bind to "
444 "secondary interface.\n");
445 return -ENODEV;
446 }
447 }
448
449 /*
450 * JMicron chips need a bit of a nudge to enable the power
451 * output pins.
452 */
453 ret = jmicron_pmos(chip, 1);
454 if (ret) {
455 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
456 return ret;
457 }
458
459 /* quirk for unsable RO-detection on JM388 chips */
460 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
461 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
462 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
463
464 return 0;
465 }
466
jmicron_enable_mmc(struct sdhci_host * host,int on)467 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
468 {
469 u8 scratch;
470
471 scratch = readb(host->ioaddr + 0xC0);
472
473 if (on)
474 scratch |= 0x01;
475 else
476 scratch &= ~0x01;
477
478 writeb(scratch, host->ioaddr + 0xC0);
479 }
480
jmicron_probe_slot(struct sdhci_pci_slot * slot)481 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
482 {
483 if (slot->chip->pdev->revision == 0) {
484 u16 version;
485
486 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
487 version = (version & SDHCI_VENDOR_VER_MASK) >>
488 SDHCI_VENDOR_VER_SHIFT;
489
490 /*
491 * Older versions of the chip have lots of nasty glitches
492 * in the ADMA engine. It's best just to avoid it
493 * completely.
494 */
495 if (version < 0xAC)
496 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
497 }
498
499 /* JM388 MMC doesn't support 1.8V while SD supports it */
500 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
501 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
502 MMC_VDD_29_30 | MMC_VDD_30_31 |
503 MMC_VDD_165_195; /* allow 1.8V */
504 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
505 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
506 }
507
508 /*
509 * The secondary interface requires a bit set to get the
510 * interrupts.
511 */
512 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
513 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
514 jmicron_enable_mmc(slot->host, 1);
515
516 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
517
518 return 0;
519 }
520
jmicron_remove_slot(struct sdhci_pci_slot * slot,int dead)521 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
522 {
523 if (dead)
524 return;
525
526 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
527 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
528 jmicron_enable_mmc(slot->host, 0);
529 }
530
jmicron_suspend(struct sdhci_pci_chip * chip)531 static int jmicron_suspend(struct sdhci_pci_chip *chip)
532 {
533 int i;
534
535 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
536 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
537 for (i = 0; i < chip->num_slots; i++)
538 jmicron_enable_mmc(chip->slots[i]->host, 0);
539 }
540
541 return 0;
542 }
543
jmicron_resume(struct sdhci_pci_chip * chip)544 static int jmicron_resume(struct sdhci_pci_chip *chip)
545 {
546 int ret, i;
547
548 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
549 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
550 for (i = 0; i < chip->num_slots; i++)
551 jmicron_enable_mmc(chip->slots[i]->host, 1);
552 }
553
554 ret = jmicron_pmos(chip, 1);
555 if (ret) {
556 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
557 return ret;
558 }
559
560 return 0;
561 }
562
563 static const struct sdhci_pci_fixes sdhci_o2 = {
564 .probe = o2_probe,
565 };
566
567 static const struct sdhci_pci_fixes sdhci_jmicron = {
568 .probe = jmicron_probe,
569
570 .probe_slot = jmicron_probe_slot,
571 .remove_slot = jmicron_remove_slot,
572
573 .suspend = jmicron_suspend,
574 .resume = jmicron_resume,
575 };
576
577 /* SysKonnect CardBus2SDIO extra registers */
578 #define SYSKT_CTRL 0x200
579 #define SYSKT_RDFIFO_STAT 0x204
580 #define SYSKT_WRFIFO_STAT 0x208
581 #define SYSKT_POWER_DATA 0x20c
582 #define SYSKT_POWER_330 0xef
583 #define SYSKT_POWER_300 0xf8
584 #define SYSKT_POWER_184 0xcc
585 #define SYSKT_POWER_CMD 0x20d
586 #define SYSKT_POWER_START (1 << 7)
587 #define SYSKT_POWER_STATUS 0x20e
588 #define SYSKT_POWER_STATUS_OK (1 << 0)
589 #define SYSKT_BOARD_REV 0x210
590 #define SYSKT_CHIP_REV 0x211
591 #define SYSKT_CONF_DATA 0x212
592 #define SYSKT_CONF_DATA_1V8 (1 << 2)
593 #define SYSKT_CONF_DATA_2V5 (1 << 1)
594 #define SYSKT_CONF_DATA_3V3 (1 << 0)
595
syskt_probe(struct sdhci_pci_chip * chip)596 static int syskt_probe(struct sdhci_pci_chip *chip)
597 {
598 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
599 chip->pdev->class &= ~0x0000FF;
600 chip->pdev->class |= PCI_SDHCI_IFDMA;
601 }
602 return 0;
603 }
604
syskt_probe_slot(struct sdhci_pci_slot * slot)605 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
606 {
607 int tm, ps;
608
609 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
610 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
611 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
612 "board rev %d.%d, chip rev %d.%d\n",
613 board_rev >> 4, board_rev & 0xf,
614 chip_rev >> 4, chip_rev & 0xf);
615 if (chip_rev >= 0x20)
616 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
617
618 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
619 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
620 udelay(50);
621 tm = 10; /* Wait max 1 ms */
622 do {
623 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
624 if (ps & SYSKT_POWER_STATUS_OK)
625 break;
626 udelay(100);
627 } while (--tm);
628 if (!tm) {
629 dev_err(&slot->chip->pdev->dev,
630 "power regulator never stabilized");
631 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
632 return -ENODEV;
633 }
634
635 return 0;
636 }
637
638 static const struct sdhci_pci_fixes sdhci_syskt = {
639 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
640 .probe = syskt_probe,
641 .probe_slot = syskt_probe_slot,
642 };
643
via_probe(struct sdhci_pci_chip * chip)644 static int via_probe(struct sdhci_pci_chip *chip)
645 {
646 if (chip->pdev->revision == 0x10)
647 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
648
649 return 0;
650 }
651
652 static const struct sdhci_pci_fixes sdhci_via = {
653 .probe = via_probe,
654 };
655
656 static const struct pci_device_id pci_ids[] __devinitdata = {
657 {
658 .vendor = PCI_VENDOR_ID_RICOH,
659 .device = PCI_DEVICE_ID_RICOH_R5C822,
660 .subvendor = PCI_ANY_ID,
661 .subdevice = PCI_ANY_ID,
662 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
663 },
664
665 {
666 .vendor = PCI_VENDOR_ID_RICOH,
667 .device = 0x843,
668 .subvendor = PCI_ANY_ID,
669 .subdevice = PCI_ANY_ID,
670 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
671 },
672
673 {
674 .vendor = PCI_VENDOR_ID_RICOH,
675 .device = 0xe822,
676 .subvendor = PCI_ANY_ID,
677 .subdevice = PCI_ANY_ID,
678 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
679 },
680
681 {
682 .vendor = PCI_VENDOR_ID_RICOH,
683 .device = 0xe823,
684 .subvendor = PCI_ANY_ID,
685 .subdevice = PCI_ANY_ID,
686 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
687 },
688
689 {
690 .vendor = PCI_VENDOR_ID_ENE,
691 .device = PCI_DEVICE_ID_ENE_CB712_SD,
692 .subvendor = PCI_ANY_ID,
693 .subdevice = PCI_ANY_ID,
694 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
695 },
696
697 {
698 .vendor = PCI_VENDOR_ID_ENE,
699 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
700 .subvendor = PCI_ANY_ID,
701 .subdevice = PCI_ANY_ID,
702 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
703 },
704
705 {
706 .vendor = PCI_VENDOR_ID_ENE,
707 .device = PCI_DEVICE_ID_ENE_CB714_SD,
708 .subvendor = PCI_ANY_ID,
709 .subdevice = PCI_ANY_ID,
710 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
711 },
712
713 {
714 .vendor = PCI_VENDOR_ID_ENE,
715 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
716 .subvendor = PCI_ANY_ID,
717 .subdevice = PCI_ANY_ID,
718 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
719 },
720
721 {
722 .vendor = PCI_VENDOR_ID_MARVELL,
723 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
724 .subvendor = PCI_ANY_ID,
725 .subdevice = PCI_ANY_ID,
726 .driver_data = (kernel_ulong_t)&sdhci_cafe,
727 },
728
729 {
730 .vendor = PCI_VENDOR_ID_JMICRON,
731 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
732 .subvendor = PCI_ANY_ID,
733 .subdevice = PCI_ANY_ID,
734 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
735 },
736
737 {
738 .vendor = PCI_VENDOR_ID_JMICRON,
739 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
740 .subvendor = PCI_ANY_ID,
741 .subdevice = PCI_ANY_ID,
742 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
743 },
744
745 {
746 .vendor = PCI_VENDOR_ID_JMICRON,
747 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
748 .subvendor = PCI_ANY_ID,
749 .subdevice = PCI_ANY_ID,
750 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
751 },
752
753 {
754 .vendor = PCI_VENDOR_ID_JMICRON,
755 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
756 .subvendor = PCI_ANY_ID,
757 .subdevice = PCI_ANY_ID,
758 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
759 },
760
761 {
762 .vendor = PCI_VENDOR_ID_SYSKONNECT,
763 .device = 0x8000,
764 .subvendor = PCI_ANY_ID,
765 .subdevice = PCI_ANY_ID,
766 .driver_data = (kernel_ulong_t)&sdhci_syskt,
767 },
768
769 {
770 .vendor = PCI_VENDOR_ID_VIA,
771 .device = 0x95d0,
772 .subvendor = PCI_ANY_ID,
773 .subdevice = PCI_ANY_ID,
774 .driver_data = (kernel_ulong_t)&sdhci_via,
775 },
776
777 {
778 .vendor = PCI_VENDOR_ID_INTEL,
779 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
780 .subvendor = PCI_ANY_ID,
781 .subdevice = PCI_ANY_ID,
782 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
783 },
784
785 {
786 .vendor = PCI_VENDOR_ID_INTEL,
787 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
788 .subvendor = PCI_ANY_ID,
789 .subdevice = PCI_ANY_ID,
790 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
791 },
792
793 {
794 .vendor = PCI_VENDOR_ID_INTEL,
795 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
796 .subvendor = PCI_ANY_ID,
797 .subdevice = PCI_ANY_ID,
798 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
799 },
800
801 {
802 .vendor = PCI_VENDOR_ID_INTEL,
803 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
804 .subvendor = PCI_ANY_ID,
805 .subdevice = PCI_ANY_ID,
806 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
807 },
808
809 {
810 .vendor = PCI_VENDOR_ID_INTEL,
811 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
812 .subvendor = PCI_ANY_ID,
813 .subdevice = PCI_ANY_ID,
814 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
815 },
816
817 {
818 .vendor = PCI_VENDOR_ID_INTEL,
819 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
820 .subvendor = PCI_ANY_ID,
821 .subdevice = PCI_ANY_ID,
822 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
823 },
824
825 {
826 .vendor = PCI_VENDOR_ID_INTEL,
827 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
828 .subvendor = PCI_ANY_ID,
829 .subdevice = PCI_ANY_ID,
830 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
831 },
832
833 {
834 .vendor = PCI_VENDOR_ID_INTEL,
835 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
836 .subvendor = PCI_ANY_ID,
837 .subdevice = PCI_ANY_ID,
838 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
839 },
840
841 {
842 .vendor = PCI_VENDOR_ID_INTEL,
843 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
844 .subvendor = PCI_ANY_ID,
845 .subdevice = PCI_ANY_ID,
846 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
847 },
848
849 {
850 .vendor = PCI_VENDOR_ID_INTEL,
851 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
852 .subvendor = PCI_ANY_ID,
853 .subdevice = PCI_ANY_ID,
854 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
855 },
856
857 {
858 .vendor = PCI_VENDOR_ID_O2,
859 .device = PCI_DEVICE_ID_O2_8120,
860 .subvendor = PCI_ANY_ID,
861 .subdevice = PCI_ANY_ID,
862 .driver_data = (kernel_ulong_t)&sdhci_o2,
863 },
864
865 {
866 .vendor = PCI_VENDOR_ID_O2,
867 .device = PCI_DEVICE_ID_O2_8220,
868 .subvendor = PCI_ANY_ID,
869 .subdevice = PCI_ANY_ID,
870 .driver_data = (kernel_ulong_t)&sdhci_o2,
871 },
872
873 {
874 .vendor = PCI_VENDOR_ID_O2,
875 .device = PCI_DEVICE_ID_O2_8221,
876 .subvendor = PCI_ANY_ID,
877 .subdevice = PCI_ANY_ID,
878 .driver_data = (kernel_ulong_t)&sdhci_o2,
879 },
880
881 {
882 .vendor = PCI_VENDOR_ID_O2,
883 .device = PCI_DEVICE_ID_O2_8320,
884 .subvendor = PCI_ANY_ID,
885 .subdevice = PCI_ANY_ID,
886 .driver_data = (kernel_ulong_t)&sdhci_o2,
887 },
888
889 {
890 .vendor = PCI_VENDOR_ID_O2,
891 .device = PCI_DEVICE_ID_O2_8321,
892 .subvendor = PCI_ANY_ID,
893 .subdevice = PCI_ANY_ID,
894 .driver_data = (kernel_ulong_t)&sdhci_o2,
895 },
896
897 { /* Generic SD host controller */
898 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
899 },
900
901 { /* end: all zeroes */ },
902 };
903
904 MODULE_DEVICE_TABLE(pci, pci_ids);
905
906 /*****************************************************************************\
907 * *
908 * SDHCI core callbacks *
909 * *
910 \*****************************************************************************/
911
sdhci_pci_enable_dma(struct sdhci_host * host)912 static int sdhci_pci_enable_dma(struct sdhci_host *host)
913 {
914 struct sdhci_pci_slot *slot;
915 struct pci_dev *pdev;
916 int ret;
917
918 slot = sdhci_priv(host);
919 pdev = slot->chip->pdev;
920
921 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
922 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
923 (host->flags & SDHCI_USE_SDMA)) {
924 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
925 "doesn't fully claim to support it.\n");
926 }
927
928 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
929 if (ret)
930 return ret;
931
932 pci_set_master(pdev);
933
934 return 0;
935 }
936
sdhci_pci_8bit_width(struct sdhci_host * host,int width)937 static int sdhci_pci_8bit_width(struct sdhci_host *host, int width)
938 {
939 u8 ctrl;
940
941 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
942
943 switch (width) {
944 case MMC_BUS_WIDTH_8:
945 ctrl |= SDHCI_CTRL_8BITBUS;
946 ctrl &= ~SDHCI_CTRL_4BITBUS;
947 break;
948 case MMC_BUS_WIDTH_4:
949 ctrl |= SDHCI_CTRL_4BITBUS;
950 ctrl &= ~SDHCI_CTRL_8BITBUS;
951 break;
952 default:
953 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
954 break;
955 }
956
957 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
958
959 return 0;
960 }
961
sdhci_pci_hw_reset(struct sdhci_host * host)962 static void sdhci_pci_hw_reset(struct sdhci_host *host)
963 {
964 struct sdhci_pci_slot *slot = sdhci_priv(host);
965 int rst_n_gpio = slot->rst_n_gpio;
966
967 if (!gpio_is_valid(rst_n_gpio))
968 return;
969 gpio_set_value_cansleep(rst_n_gpio, 0);
970 /* For eMMC, minimum is 1us but give it 10us for good measure */
971 udelay(10);
972 gpio_set_value_cansleep(rst_n_gpio, 1);
973 /* For eMMC, minimum is 200us but give it 300us for good measure */
974 usleep_range(300, 1000);
975 }
976
977 static struct sdhci_ops sdhci_pci_ops = {
978 .enable_dma = sdhci_pci_enable_dma,
979 .platform_8bit_width = sdhci_pci_8bit_width,
980 .hw_reset = sdhci_pci_hw_reset,
981 };
982
983 /*****************************************************************************\
984 * *
985 * Suspend/resume *
986 * *
987 \*****************************************************************************/
988
989 #ifdef CONFIG_PM
990
sdhci_pci_suspend(struct device * dev)991 static int sdhci_pci_suspend(struct device *dev)
992 {
993 struct pci_dev *pdev = to_pci_dev(dev);
994 struct sdhci_pci_chip *chip;
995 struct sdhci_pci_slot *slot;
996 mmc_pm_flag_t slot_pm_flags;
997 mmc_pm_flag_t pm_flags = 0;
998 int i, ret;
999
1000 chip = pci_get_drvdata(pdev);
1001 if (!chip)
1002 return 0;
1003
1004 for (i = 0; i < chip->num_slots; i++) {
1005 slot = chip->slots[i];
1006 if (!slot)
1007 continue;
1008
1009 ret = sdhci_suspend_host(slot->host);
1010
1011 if (ret)
1012 goto err_pci_suspend;
1013
1014 slot_pm_flags = slot->host->mmc->pm_flags;
1015 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1016 sdhci_enable_irq_wakeups(slot->host);
1017
1018 pm_flags |= slot_pm_flags;
1019 }
1020
1021 if (chip->fixes && chip->fixes->suspend) {
1022 ret = chip->fixes->suspend(chip);
1023 if (ret)
1024 goto err_pci_suspend;
1025 }
1026
1027 pci_save_state(pdev);
1028 if (pm_flags & MMC_PM_KEEP_POWER) {
1029 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
1030 pci_pme_active(pdev, true);
1031 pci_enable_wake(pdev, PCI_D3hot, 1);
1032 }
1033 pci_set_power_state(pdev, PCI_D3hot);
1034 } else {
1035 pci_enable_wake(pdev, PCI_D3hot, 0);
1036 pci_disable_device(pdev);
1037 pci_set_power_state(pdev, PCI_D3hot);
1038 }
1039
1040 return 0;
1041
1042 err_pci_suspend:
1043 while (--i >= 0)
1044 sdhci_resume_host(chip->slots[i]->host);
1045 return ret;
1046 }
1047
sdhci_pci_resume(struct device * dev)1048 static int sdhci_pci_resume(struct device *dev)
1049 {
1050 struct pci_dev *pdev = to_pci_dev(dev);
1051 struct sdhci_pci_chip *chip;
1052 struct sdhci_pci_slot *slot;
1053 int i, ret;
1054
1055 chip = pci_get_drvdata(pdev);
1056 if (!chip)
1057 return 0;
1058
1059 pci_set_power_state(pdev, PCI_D0);
1060 pci_restore_state(pdev);
1061 ret = pci_enable_device(pdev);
1062 if (ret)
1063 return ret;
1064
1065 if (chip->fixes && chip->fixes->resume) {
1066 ret = chip->fixes->resume(chip);
1067 if (ret)
1068 return ret;
1069 }
1070
1071 for (i = 0; i < chip->num_slots; i++) {
1072 slot = chip->slots[i];
1073 if (!slot)
1074 continue;
1075
1076 ret = sdhci_resume_host(slot->host);
1077 if (ret)
1078 return ret;
1079 }
1080
1081 return 0;
1082 }
1083
1084 #else /* CONFIG_PM */
1085
1086 #define sdhci_pci_suspend NULL
1087 #define sdhci_pci_resume NULL
1088
1089 #endif /* CONFIG_PM */
1090
1091 #ifdef CONFIG_PM_RUNTIME
1092
sdhci_pci_runtime_suspend(struct device * dev)1093 static int sdhci_pci_runtime_suspend(struct device *dev)
1094 {
1095 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1096 struct sdhci_pci_chip *chip;
1097 struct sdhci_pci_slot *slot;
1098 int i, ret;
1099
1100 chip = pci_get_drvdata(pdev);
1101 if (!chip)
1102 return 0;
1103
1104 for (i = 0; i < chip->num_slots; i++) {
1105 slot = chip->slots[i];
1106 if (!slot)
1107 continue;
1108
1109 ret = sdhci_runtime_suspend_host(slot->host);
1110
1111 if (ret)
1112 goto err_pci_runtime_suspend;
1113 }
1114
1115 if (chip->fixes && chip->fixes->suspend) {
1116 ret = chip->fixes->suspend(chip);
1117 if (ret)
1118 goto err_pci_runtime_suspend;
1119 }
1120
1121 return 0;
1122
1123 err_pci_runtime_suspend:
1124 while (--i >= 0)
1125 sdhci_runtime_resume_host(chip->slots[i]->host);
1126 return ret;
1127 }
1128
sdhci_pci_runtime_resume(struct device * dev)1129 static int sdhci_pci_runtime_resume(struct device *dev)
1130 {
1131 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1132 struct sdhci_pci_chip *chip;
1133 struct sdhci_pci_slot *slot;
1134 int i, ret;
1135
1136 chip = pci_get_drvdata(pdev);
1137 if (!chip)
1138 return 0;
1139
1140 if (chip->fixes && chip->fixes->resume) {
1141 ret = chip->fixes->resume(chip);
1142 if (ret)
1143 return ret;
1144 }
1145
1146 for (i = 0; i < chip->num_slots; i++) {
1147 slot = chip->slots[i];
1148 if (!slot)
1149 continue;
1150
1151 ret = sdhci_runtime_resume_host(slot->host);
1152 if (ret)
1153 return ret;
1154 }
1155
1156 return 0;
1157 }
1158
sdhci_pci_runtime_idle(struct device * dev)1159 static int sdhci_pci_runtime_idle(struct device *dev)
1160 {
1161 return 0;
1162 }
1163
1164 #else
1165
1166 #define sdhci_pci_runtime_suspend NULL
1167 #define sdhci_pci_runtime_resume NULL
1168 #define sdhci_pci_runtime_idle NULL
1169
1170 #endif
1171
1172 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1173 .suspend = sdhci_pci_suspend,
1174 .resume = sdhci_pci_resume,
1175 .runtime_suspend = sdhci_pci_runtime_suspend,
1176 .runtime_resume = sdhci_pci_runtime_resume,
1177 .runtime_idle = sdhci_pci_runtime_idle,
1178 };
1179
1180 /*****************************************************************************\
1181 * *
1182 * Device probing/removal *
1183 * *
1184 \*****************************************************************************/
1185
sdhci_pci_probe_slot(struct pci_dev * pdev,struct sdhci_pci_chip * chip,int first_bar,int slotno)1186 static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
1187 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1188 int slotno)
1189 {
1190 struct sdhci_pci_slot *slot;
1191 struct sdhci_host *host;
1192 int ret, bar = first_bar + slotno;
1193
1194 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1195 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1196 return ERR_PTR(-ENODEV);
1197 }
1198
1199 if (pci_resource_len(pdev, bar) != 0x100) {
1200 dev_err(&pdev->dev, "Invalid iomem size. You may "
1201 "experience problems.\n");
1202 }
1203
1204 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1205 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1206 return ERR_PTR(-ENODEV);
1207 }
1208
1209 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1210 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1211 return ERR_PTR(-ENODEV);
1212 }
1213
1214 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1215 if (IS_ERR(host)) {
1216 dev_err(&pdev->dev, "cannot allocate host\n");
1217 return ERR_CAST(host);
1218 }
1219
1220 slot = sdhci_priv(host);
1221
1222 slot->chip = chip;
1223 slot->host = host;
1224 slot->pci_bar = bar;
1225 slot->rst_n_gpio = -EINVAL;
1226 slot->cd_gpio = -EINVAL;
1227
1228 /* Retrieve platform data if there is any */
1229 if (*sdhci_pci_get_data)
1230 slot->data = sdhci_pci_get_data(pdev, slotno);
1231
1232 if (slot->data) {
1233 if (slot->data->setup) {
1234 ret = slot->data->setup(slot->data);
1235 if (ret) {
1236 dev_err(&pdev->dev, "platform setup failed\n");
1237 goto free;
1238 }
1239 }
1240 slot->rst_n_gpio = slot->data->rst_n_gpio;
1241 slot->cd_gpio = slot->data->cd_gpio;
1242 }
1243
1244 host->hw_name = "PCI";
1245 host->ops = &sdhci_pci_ops;
1246 host->quirks = chip->quirks;
1247 host->quirks2 = chip->quirks2;
1248
1249 host->irq = pdev->irq;
1250
1251 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
1252 if (ret) {
1253 dev_err(&pdev->dev, "cannot request region\n");
1254 goto cleanup;
1255 }
1256
1257 host->ioaddr = pci_ioremap_bar(pdev, bar);
1258 if (!host->ioaddr) {
1259 dev_err(&pdev->dev, "failed to remap registers\n");
1260 ret = -ENOMEM;
1261 goto release;
1262 }
1263
1264 if (chip->fixes && chip->fixes->probe_slot) {
1265 ret = chip->fixes->probe_slot(slot);
1266 if (ret)
1267 goto unmap;
1268 }
1269
1270 if (gpio_is_valid(slot->rst_n_gpio)) {
1271 if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
1272 gpio_direction_output(slot->rst_n_gpio, 1);
1273 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1274 } else {
1275 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1276 slot->rst_n_gpio = -EINVAL;
1277 }
1278 }
1279
1280 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1281
1282 ret = sdhci_add_host(host);
1283 if (ret)
1284 goto remove;
1285
1286 sdhci_pci_add_own_cd(slot);
1287
1288 return slot;
1289
1290 remove:
1291 if (gpio_is_valid(slot->rst_n_gpio))
1292 gpio_free(slot->rst_n_gpio);
1293
1294 if (chip->fixes && chip->fixes->remove_slot)
1295 chip->fixes->remove_slot(slot, 0);
1296
1297 unmap:
1298 iounmap(host->ioaddr);
1299
1300 release:
1301 pci_release_region(pdev, bar);
1302
1303 cleanup:
1304 if (slot->data && slot->data->cleanup)
1305 slot->data->cleanup(slot->data);
1306
1307 free:
1308 sdhci_free_host(host);
1309
1310 return ERR_PTR(ret);
1311 }
1312
sdhci_pci_remove_slot(struct sdhci_pci_slot * slot)1313 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1314 {
1315 int dead;
1316 u32 scratch;
1317
1318 sdhci_pci_remove_own_cd(slot);
1319
1320 dead = 0;
1321 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1322 if (scratch == (u32)-1)
1323 dead = 1;
1324
1325 sdhci_remove_host(slot->host, dead);
1326
1327 if (gpio_is_valid(slot->rst_n_gpio))
1328 gpio_free(slot->rst_n_gpio);
1329
1330 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1331 slot->chip->fixes->remove_slot(slot, dead);
1332
1333 if (slot->data && slot->data->cleanup)
1334 slot->data->cleanup(slot->data);
1335
1336 pci_release_region(slot->chip->pdev, slot->pci_bar);
1337
1338 sdhci_free_host(slot->host);
1339 }
1340
sdhci_pci_runtime_pm_allow(struct device * dev)1341 static void __devinit sdhci_pci_runtime_pm_allow(struct device *dev)
1342 {
1343 pm_runtime_put_noidle(dev);
1344 pm_runtime_allow(dev);
1345 pm_runtime_set_autosuspend_delay(dev, 50);
1346 pm_runtime_use_autosuspend(dev);
1347 pm_suspend_ignore_children(dev, 1);
1348 }
1349
sdhci_pci_runtime_pm_forbid(struct device * dev)1350 static void __devexit sdhci_pci_runtime_pm_forbid(struct device *dev)
1351 {
1352 pm_runtime_forbid(dev);
1353 pm_runtime_get_noresume(dev);
1354 }
1355
sdhci_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1356 static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
1357 const struct pci_device_id *ent)
1358 {
1359 struct sdhci_pci_chip *chip;
1360 struct sdhci_pci_slot *slot;
1361
1362 u8 slots, first_bar;
1363 int ret, i;
1364
1365 BUG_ON(pdev == NULL);
1366 BUG_ON(ent == NULL);
1367
1368 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1369 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1370
1371 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1372 if (ret)
1373 return ret;
1374
1375 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1376 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1377 if (slots == 0)
1378 return -ENODEV;
1379
1380 BUG_ON(slots > MAX_SLOTS);
1381
1382 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1383 if (ret)
1384 return ret;
1385
1386 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1387
1388 if (first_bar > 5) {
1389 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1390 return -ENODEV;
1391 }
1392
1393 ret = pci_enable_device(pdev);
1394 if (ret)
1395 return ret;
1396
1397 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
1398 if (!chip) {
1399 ret = -ENOMEM;
1400 goto err;
1401 }
1402
1403 chip->pdev = pdev;
1404 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1405 if (chip->fixes) {
1406 chip->quirks = chip->fixes->quirks;
1407 chip->quirks2 = chip->fixes->quirks2;
1408 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1409 }
1410 chip->num_slots = slots;
1411
1412 pci_set_drvdata(pdev, chip);
1413
1414 if (chip->fixes && chip->fixes->probe) {
1415 ret = chip->fixes->probe(chip);
1416 if (ret)
1417 goto free;
1418 }
1419
1420 slots = chip->num_slots; /* Quirk may have changed this */
1421
1422 for (i = 0; i < slots; i++) {
1423 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1424 if (IS_ERR(slot)) {
1425 for (i--; i >= 0; i--)
1426 sdhci_pci_remove_slot(chip->slots[i]);
1427 ret = PTR_ERR(slot);
1428 goto free;
1429 }
1430
1431 chip->slots[i] = slot;
1432 }
1433
1434 if (chip->allow_runtime_pm)
1435 sdhci_pci_runtime_pm_allow(&pdev->dev);
1436
1437 return 0;
1438
1439 free:
1440 pci_set_drvdata(pdev, NULL);
1441 kfree(chip);
1442
1443 err:
1444 pci_disable_device(pdev);
1445 return ret;
1446 }
1447
sdhci_pci_remove(struct pci_dev * pdev)1448 static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
1449 {
1450 int i;
1451 struct sdhci_pci_chip *chip;
1452
1453 chip = pci_get_drvdata(pdev);
1454
1455 if (chip) {
1456 if (chip->allow_runtime_pm)
1457 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1458
1459 for (i = 0; i < chip->num_slots; i++)
1460 sdhci_pci_remove_slot(chip->slots[i]);
1461
1462 pci_set_drvdata(pdev, NULL);
1463 kfree(chip);
1464 }
1465
1466 pci_disable_device(pdev);
1467 }
1468
1469 static struct pci_driver sdhci_driver = {
1470 .name = "sdhci-pci",
1471 .id_table = pci_ids,
1472 .probe = sdhci_pci_probe,
1473 .remove = __devexit_p(sdhci_pci_remove),
1474 .driver = {
1475 .pm = &sdhci_pci_pm_ops
1476 },
1477 };
1478
1479 /*****************************************************************************\
1480 * *
1481 * Driver init/exit *
1482 * *
1483 \*****************************************************************************/
1484
sdhci_drv_init(void)1485 static int __init sdhci_drv_init(void)
1486 {
1487 return pci_register_driver(&sdhci_driver);
1488 }
1489
sdhci_drv_exit(void)1490 static void __exit sdhci_drv_exit(void)
1491 {
1492 pci_unregister_driver(&sdhci_driver);
1493 }
1494
1495 module_init(sdhci_drv_init);
1496 module_exit(sdhci_drv_exit);
1497
1498 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1499 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1500 MODULE_LICENSE("GPL");
1501