1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
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.
10 * Thanks to the following companies for their support:
12 * - JMicron (hardware and technical support)
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>
25 #include <linux/gpio.h>
26 #include <linux/sfi.h>
27 #include <linux/pm_runtime.h>
35 #define PCI_SDHCI_IFPIO 0x00
36 #define PCI_SDHCI_IFDMA 0x01
37 #define PCI_SDHCI_IFVENDOR 0x02
39 #define PCI_SLOT_INFO 0x40 /* 8 bits */
40 #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
41 #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
45 struct sdhci_pci_chip
;
46 struct sdhci_pci_slot
;
48 struct sdhci_pci_fixes
{
51 int (*probe
) (struct sdhci_pci_chip
*);
53 int (*probe_slot
) (struct sdhci_pci_slot
*);
54 void (*remove_slot
) (struct sdhci_pci_slot
*, int);
56 int (*suspend
) (struct sdhci_pci_chip
*,
58 int (*resume
) (struct sdhci_pci_chip
*);
61 struct sdhci_pci_slot
{
62 struct sdhci_pci_chip
*chip
;
63 struct sdhci_host
*host
;
71 struct sdhci_pci_chip
{
75 const struct sdhci_pci_fixes
*fixes
;
77 int num_slots
; /* Slots on controller */
78 struct sdhci_pci_slot
*slots
[MAX_SLOTS
]; /* Pointers to host slots */
82 /*****************************************************************************\
84 * Hardware specific quirk handling *
86 \*****************************************************************************/
88 static int ricoh_probe(struct sdhci_pci_chip
*chip
)
90 if (chip
->pdev
->subsystem_vendor
== PCI_VENDOR_ID_SAMSUNG
||
91 chip
->pdev
->subsystem_vendor
== PCI_VENDOR_ID_SONY
)
92 chip
->quirks
|= SDHCI_QUIRK_NO_CARD_NO_RESET
;
96 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot
*slot
)
99 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT
)
100 & SDHCI_TIMEOUT_CLK_MASK
) |
102 ((0x21 << SDHCI_CLOCK_BASE_SHIFT
)
103 & SDHCI_CLOCK_BASE_MASK
) |
105 SDHCI_TIMEOUT_CLK_UNIT
|
111 static int ricoh_mmc_resume(struct sdhci_pci_chip
*chip
)
113 /* Apply a delay to allow controller to settle */
114 /* Otherwise it becomes confused if card state changed
120 static const struct sdhci_pci_fixes sdhci_ricoh
= {
121 .probe
= ricoh_probe
,
122 .quirks
= SDHCI_QUIRK_32BIT_DMA_ADDR
|
123 SDHCI_QUIRK_FORCE_DMA
|
124 SDHCI_QUIRK_CLOCK_BEFORE_RESET
,
127 static const struct sdhci_pci_fixes sdhci_ricoh_mmc
= {
128 .probe_slot
= ricoh_mmc_probe_slot
,
129 .resume
= ricoh_mmc_resume
,
130 .quirks
= SDHCI_QUIRK_32BIT_DMA_ADDR
|
131 SDHCI_QUIRK_CLOCK_BEFORE_RESET
|
132 SDHCI_QUIRK_NO_CARD_NO_RESET
|
133 SDHCI_QUIRK_MISSING_CAPS
136 static const struct sdhci_pci_fixes sdhci_ene_712
= {
137 .quirks
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
138 SDHCI_QUIRK_BROKEN_DMA
,
141 static const struct sdhci_pci_fixes sdhci_ene_714
= {
142 .quirks
= SDHCI_QUIRK_SINGLE_POWER_WRITE
|
143 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS
|
144 SDHCI_QUIRK_BROKEN_DMA
,
147 static const struct sdhci_pci_fixes sdhci_cafe
= {
148 .quirks
= SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER
|
149 SDHCI_QUIRK_NO_BUSY_IRQ
|
150 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
,
153 static int mrst_hc_probe_slot(struct sdhci_pci_slot
*slot
)
155 slot
->host
->mmc
->caps
|= MMC_CAP_8_BIT_DATA
;
160 * ADMA operation is disabled for Moorestown platform due to
163 static int mrst_hc_probe(struct sdhci_pci_chip
*chip
)
166 * slots number is fixed here for MRST as SDIO3/5 are never used and
167 * have hardware bugs.
173 /* Medfield eMMC hardware reset GPIOs */
174 static int mfd_emmc0_rst_gpio
= -EINVAL
;
175 static int mfd_emmc1_rst_gpio
= -EINVAL
;
177 static int mfd_emmc_gpio_parse(struct sfi_table_header
*table
)
179 struct sfi_table_simple
*sb
= (struct sfi_table_simple
*)table
;
180 struct sfi_gpio_table_entry
*entry
;
183 num
= SFI_GET_NUM_ENTRIES(sb
, struct sfi_gpio_table_entry
);
184 entry
= (struct sfi_gpio_table_entry
*)sb
->pentry
;
186 for (i
= 0; i
< num
; i
++, entry
++) {
187 if (!strncmp(entry
->pin_name
, "emmc0_rst", SFI_NAME_LEN
))
188 mfd_emmc0_rst_gpio
= entry
->pin_no
;
189 else if (!strncmp(entry
->pin_name
, "emmc1_rst", SFI_NAME_LEN
))
190 mfd_emmc1_rst_gpio
= entry
->pin_no
;
196 #ifdef CONFIG_PM_RUNTIME
198 static irqreturn_t
mfd_sd_cd(int irq
, void *dev_id
)
200 struct sdhci_pci_slot
*slot
= dev_id
;
201 struct sdhci_host
*host
= slot
->host
;
203 mmc_detect_change(host
->mmc
, msecs_to_jiffies(200));
207 #define MFLD_SD_CD_PIN 69
209 static int mfd_sd_probe_slot(struct sdhci_pci_slot
*slot
)
211 int err
, irq
, gpio
= MFLD_SD_CD_PIN
;
213 slot
->cd_gpio
= -EINVAL
;
214 slot
->cd_irq
= -EINVAL
;
216 err
= gpio_request(gpio
, "sd_cd");
220 err
= gpio_direction_input(gpio
);
224 irq
= gpio_to_irq(gpio
);
228 err
= request_irq(irq
, mfd_sd_cd
, IRQF_TRIGGER_RISING
|
229 IRQF_TRIGGER_FALLING
, "sd_cd", slot
);
233 slot
->cd_gpio
= gpio
;
235 slot
->host
->quirks2
|= SDHCI_QUIRK2_OWN_CARD_DETECTION
;
242 dev_warn(&slot
->chip
->pdev
->dev
, "failed to setup card detect wake up\n");
246 static void mfd_sd_remove_slot(struct sdhci_pci_slot
*slot
, int dead
)
248 if (slot
->cd_irq
>= 0)
249 free_irq(slot
->cd_irq
, slot
);
250 gpio_free(slot
->cd_gpio
);
255 #define mfd_sd_probe_slot NULL
256 #define mfd_sd_remove_slot NULL
260 static int mfd_emmc_probe_slot(struct sdhci_pci_slot
*slot
)
262 const char *name
= NULL
;
265 sfi_table_parse(SFI_SIG_GPIO
, NULL
, NULL
, mfd_emmc_gpio_parse
);
267 switch (slot
->chip
->pdev
->device
) {
268 case PCI_DEVICE_ID_INTEL_MFD_EMMC0
:
269 gpio
= mfd_emmc0_rst_gpio
;
270 name
= "eMMC0_reset";
272 case PCI_DEVICE_ID_INTEL_MFD_EMMC1
:
273 gpio
= mfd_emmc1_rst_gpio
;
274 name
= "eMMC1_reset";
278 if (!gpio_request(gpio
, name
)) {
279 gpio_direction_output(gpio
, 1);
280 slot
->rst_n_gpio
= gpio
;
281 slot
->host
->mmc
->caps
|= MMC_CAP_HW_RESET
;
284 slot
->host
->mmc
->caps
|= MMC_CAP_8_BIT_DATA
| MMC_CAP_NONREMOVABLE
;
286 slot
->host
->mmc
->caps2
= MMC_CAP2_BOOTPART_NOACC
;
291 static void mfd_emmc_remove_slot(struct sdhci_pci_slot
*slot
, int dead
)
293 gpio_free(slot
->rst_n_gpio
);
296 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0
= {
297 .quirks
= SDHCI_QUIRK_BROKEN_ADMA
| SDHCI_QUIRK_NO_HISPD_BIT
,
298 .probe_slot
= mrst_hc_probe_slot
,
301 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2
= {
302 .quirks
= SDHCI_QUIRK_BROKEN_ADMA
| SDHCI_QUIRK_NO_HISPD_BIT
,
303 .probe
= mrst_hc_probe
,
306 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd
= {
307 .quirks
= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
,
308 .probe_slot
= mfd_sd_probe_slot
,
309 .remove_slot
= mfd_sd_remove_slot
,
312 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio
= {
313 .quirks
= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
,
316 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc
= {
317 .quirks
= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
,
318 .probe_slot
= mfd_emmc_probe_slot
,
319 .remove_slot
= mfd_emmc_remove_slot
,
322 /* O2Micro extra registers */
323 #define O2_SD_LOCK_WP 0xD3
324 #define O2_SD_MULTI_VCC3V 0xEE
325 #define O2_SD_CLKREQ 0xEC
326 #define O2_SD_CAPS 0xE0
327 #define O2_SD_ADMA1 0xE2
328 #define O2_SD_ADMA2 0xE7
329 #define O2_SD_INF_MOD 0xF1
331 static int o2_probe(struct sdhci_pci_chip
*chip
)
336 switch (chip
->pdev
->device
) {
337 case PCI_DEVICE_ID_O2_8220
:
338 case PCI_DEVICE_ID_O2_8221
:
339 case PCI_DEVICE_ID_O2_8320
:
340 case PCI_DEVICE_ID_O2_8321
:
341 /* This extra setup is required due to broken ADMA. */
342 ret
= pci_read_config_byte(chip
->pdev
, O2_SD_LOCK_WP
, &scratch
);
346 pci_write_config_byte(chip
->pdev
, O2_SD_LOCK_WP
, scratch
);
348 /* Set Multi 3 to VCC3V# */
349 pci_write_config_byte(chip
->pdev
, O2_SD_MULTI_VCC3V
, 0x08);
351 /* Disable CLK_REQ# support after media DET */
352 ret
= pci_read_config_byte(chip
->pdev
, O2_SD_CLKREQ
, &scratch
);
356 pci_write_config_byte(chip
->pdev
, O2_SD_CLKREQ
, scratch
);
358 /* Choose capabilities, enable SDMA. We have to write 0x01
359 * to the capabilities register first to unlock it.
361 ret
= pci_read_config_byte(chip
->pdev
, O2_SD_CAPS
, &scratch
);
365 pci_write_config_byte(chip
->pdev
, O2_SD_CAPS
, scratch
);
366 pci_write_config_byte(chip
->pdev
, O2_SD_CAPS
, 0x73);
368 /* Disable ADMA1/2 */
369 pci_write_config_byte(chip
->pdev
, O2_SD_ADMA1
, 0x39);
370 pci_write_config_byte(chip
->pdev
, O2_SD_ADMA2
, 0x08);
372 /* Disable the infinite transfer mode */
373 ret
= pci_read_config_byte(chip
->pdev
, O2_SD_INF_MOD
, &scratch
);
377 pci_write_config_byte(chip
->pdev
, O2_SD_INF_MOD
, scratch
);
380 ret
= pci_read_config_byte(chip
->pdev
, O2_SD_LOCK_WP
, &scratch
);
384 pci_write_config_byte(chip
->pdev
, O2_SD_LOCK_WP
, scratch
);
390 static int jmicron_pmos(struct sdhci_pci_chip
*chip
, int on
)
395 ret
= pci_read_config_byte(chip
->pdev
, 0xAE, &scratch
);
400 * Turn PMOS on [bit 0], set over current detection to 2.4 V
401 * [bit 1:2] and enable over current debouncing [bit 6].
408 ret
= pci_write_config_byte(chip
->pdev
, 0xAE, scratch
);
415 static int jmicron_probe(struct sdhci_pci_chip
*chip
)
420 if (chip
->pdev
->revision
== 0) {
421 chip
->quirks
|= SDHCI_QUIRK_32BIT_DMA_ADDR
|
422 SDHCI_QUIRK_32BIT_DMA_SIZE
|
423 SDHCI_QUIRK_32BIT_ADMA_SIZE
|
424 SDHCI_QUIRK_RESET_AFTER_REQUEST
|
425 SDHCI_QUIRK_BROKEN_SMALL_PIO
;
429 * JMicron chips can have two interfaces to the same hardware
430 * in order to work around limitations in Microsoft's driver.
431 * We need to make sure we only bind to one of them.
433 * This code assumes two things:
435 * 1. The PCI code adds subfunctions in order.
437 * 2. The MMC interface has a lower subfunction number
438 * than the SD interface.
440 if (chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB38X_SD
)
441 mmcdev
= PCI_DEVICE_ID_JMICRON_JMB38X_MMC
;
442 else if (chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_SD
)
443 mmcdev
= PCI_DEVICE_ID_JMICRON_JMB388_ESD
;
446 struct pci_dev
*sd_dev
;
449 while ((sd_dev
= pci_get_device(PCI_VENDOR_ID_JMICRON
,
450 mmcdev
, sd_dev
)) != NULL
) {
451 if ((PCI_SLOT(chip
->pdev
->devfn
) ==
452 PCI_SLOT(sd_dev
->devfn
)) &&
453 (chip
->pdev
->bus
== sd_dev
->bus
))
459 dev_info(&chip
->pdev
->dev
, "Refusing to bind to "
460 "secondary interface.\n");
466 * JMicron chips need a bit of a nudge to enable the power
469 ret
= jmicron_pmos(chip
, 1);
471 dev_err(&chip
->pdev
->dev
, "Failure enabling card power\n");
475 /* quirk for unsable RO-detection on JM388 chips */
476 if (chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_SD
||
477 chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
)
478 chip
->quirks
|= SDHCI_QUIRK_UNSTABLE_RO_DETECT
;
483 static void jmicron_enable_mmc(struct sdhci_host
*host
, int on
)
487 scratch
= readb(host
->ioaddr
+ 0xC0);
494 writeb(scratch
, host
->ioaddr
+ 0xC0);
497 static int jmicron_probe_slot(struct sdhci_pci_slot
*slot
)
499 if (slot
->chip
->pdev
->revision
== 0) {
502 version
= readl(slot
->host
->ioaddr
+ SDHCI_HOST_VERSION
);
503 version
= (version
& SDHCI_VENDOR_VER_MASK
) >>
504 SDHCI_VENDOR_VER_SHIFT
;
507 * Older versions of the chip have lots of nasty glitches
508 * in the ADMA engine. It's best just to avoid it
512 slot
->host
->quirks
|= SDHCI_QUIRK_BROKEN_ADMA
;
515 /* JM388 MMC doesn't support 1.8V while SD supports it */
516 if (slot
->chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
) {
517 slot
->host
->ocr_avail_sd
= MMC_VDD_32_33
| MMC_VDD_33_34
|
518 MMC_VDD_29_30
| MMC_VDD_30_31
|
519 MMC_VDD_165_195
; /* allow 1.8V */
520 slot
->host
->ocr_avail_mmc
= MMC_VDD_32_33
| MMC_VDD_33_34
|
521 MMC_VDD_29_30
| MMC_VDD_30_31
; /* no 1.8V for MMC */
525 * The secondary interface requires a bit set to get the
528 if (slot
->chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB38X_MMC
||
529 slot
->chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
)
530 jmicron_enable_mmc(slot
->host
, 1);
532 slot
->host
->mmc
->caps
|= MMC_CAP_BUS_WIDTH_TEST
;
537 static void jmicron_remove_slot(struct sdhci_pci_slot
*slot
, int dead
)
542 if (slot
->chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB38X_MMC
||
543 slot
->chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
)
544 jmicron_enable_mmc(slot
->host
, 0);
547 static int jmicron_suspend(struct sdhci_pci_chip
*chip
, pm_message_t state
)
551 if (chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB38X_MMC
||
552 chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
) {
553 for (i
= 0; i
< chip
->num_slots
; i
++)
554 jmicron_enable_mmc(chip
->slots
[i
]->host
, 0);
560 static int jmicron_resume(struct sdhci_pci_chip
*chip
)
564 if (chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB38X_MMC
||
565 chip
->pdev
->device
== PCI_DEVICE_ID_JMICRON_JMB388_ESD
) {
566 for (i
= 0; i
< chip
->num_slots
; i
++)
567 jmicron_enable_mmc(chip
->slots
[i
]->host
, 1);
570 ret
= jmicron_pmos(chip
, 1);
572 dev_err(&chip
->pdev
->dev
, "Failure enabling card power\n");
579 static const struct sdhci_pci_fixes sdhci_o2
= {
583 static const struct sdhci_pci_fixes sdhci_jmicron
= {
584 .probe
= jmicron_probe
,
586 .probe_slot
= jmicron_probe_slot
,
587 .remove_slot
= jmicron_remove_slot
,
589 .suspend
= jmicron_suspend
,
590 .resume
= jmicron_resume
,
593 /* SysKonnect CardBus2SDIO extra registers */
594 #define SYSKT_CTRL 0x200
595 #define SYSKT_RDFIFO_STAT 0x204
596 #define SYSKT_WRFIFO_STAT 0x208
597 #define SYSKT_POWER_DATA 0x20c
598 #define SYSKT_POWER_330 0xef
599 #define SYSKT_POWER_300 0xf8
600 #define SYSKT_POWER_184 0xcc
601 #define SYSKT_POWER_CMD 0x20d
602 #define SYSKT_POWER_START (1 << 7)
603 #define SYSKT_POWER_STATUS 0x20e
604 #define SYSKT_POWER_STATUS_OK (1 << 0)
605 #define SYSKT_BOARD_REV 0x210
606 #define SYSKT_CHIP_REV 0x211
607 #define SYSKT_CONF_DATA 0x212
608 #define SYSKT_CONF_DATA_1V8 (1 << 2)
609 #define SYSKT_CONF_DATA_2V5 (1 << 1)
610 #define SYSKT_CONF_DATA_3V3 (1 << 0)
612 static int syskt_probe(struct sdhci_pci_chip
*chip
)
614 if ((chip
->pdev
->class & 0x0000FF) == PCI_SDHCI_IFVENDOR
) {
615 chip
->pdev
->class &= ~0x0000FF;
616 chip
->pdev
->class |= PCI_SDHCI_IFDMA
;
621 static int syskt_probe_slot(struct sdhci_pci_slot
*slot
)
625 u8 board_rev
= readb(slot
->host
->ioaddr
+ SYSKT_BOARD_REV
);
626 u8 chip_rev
= readb(slot
->host
->ioaddr
+ SYSKT_CHIP_REV
);
627 dev_info(&slot
->chip
->pdev
->dev
, "SysKonnect CardBus2SDIO, "
628 "board rev %d.%d, chip rev %d.%d\n",
629 board_rev
>> 4, board_rev
& 0xf,
630 chip_rev
>> 4, chip_rev
& 0xf);
631 if (chip_rev
>= 0x20)
632 slot
->host
->quirks
|= SDHCI_QUIRK_FORCE_DMA
;
634 writeb(SYSKT_POWER_330
, slot
->host
->ioaddr
+ SYSKT_POWER_DATA
);
635 writeb(SYSKT_POWER_START
, slot
->host
->ioaddr
+ SYSKT_POWER_CMD
);
637 tm
= 10; /* Wait max 1 ms */
639 ps
= readw(slot
->host
->ioaddr
+ SYSKT_POWER_STATUS
);
640 if (ps
& SYSKT_POWER_STATUS_OK
)
645 dev_err(&slot
->chip
->pdev
->dev
,
646 "power regulator never stabilized");
647 writeb(0, slot
->host
->ioaddr
+ SYSKT_POWER_CMD
);
654 static const struct sdhci_pci_fixes sdhci_syskt
= {
655 .quirks
= SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER
,
656 .probe
= syskt_probe
,
657 .probe_slot
= syskt_probe_slot
,
660 static int via_probe(struct sdhci_pci_chip
*chip
)
662 if (chip
->pdev
->revision
== 0x10)
663 chip
->quirks
|= SDHCI_QUIRK_DELAY_AFTER_POWER
;
668 static const struct sdhci_pci_fixes sdhci_via
= {
672 static const struct pci_device_id pci_ids
[] __devinitdata
= {
674 .vendor
= PCI_VENDOR_ID_RICOH
,
675 .device
= PCI_DEVICE_ID_RICOH_R5C822
,
676 .subvendor
= PCI_ANY_ID
,
677 .subdevice
= PCI_ANY_ID
,
678 .driver_data
= (kernel_ulong_t
)&sdhci_ricoh
,
682 .vendor
= PCI_VENDOR_ID_RICOH
,
684 .subvendor
= PCI_ANY_ID
,
685 .subdevice
= PCI_ANY_ID
,
686 .driver_data
= (kernel_ulong_t
)&sdhci_ricoh_mmc
,
690 .vendor
= PCI_VENDOR_ID_RICOH
,
692 .subvendor
= PCI_ANY_ID
,
693 .subdevice
= PCI_ANY_ID
,
694 .driver_data
= (kernel_ulong_t
)&sdhci_ricoh_mmc
,
698 .vendor
= PCI_VENDOR_ID_RICOH
,
700 .subvendor
= PCI_ANY_ID
,
701 .subdevice
= PCI_ANY_ID
,
702 .driver_data
= (kernel_ulong_t
)&sdhci_ricoh_mmc
,
706 .vendor
= PCI_VENDOR_ID_ENE
,
707 .device
= PCI_DEVICE_ID_ENE_CB712_SD
,
708 .subvendor
= PCI_ANY_ID
,
709 .subdevice
= PCI_ANY_ID
,
710 .driver_data
= (kernel_ulong_t
)&sdhci_ene_712
,
714 .vendor
= PCI_VENDOR_ID_ENE
,
715 .device
= PCI_DEVICE_ID_ENE_CB712_SD_2
,
716 .subvendor
= PCI_ANY_ID
,
717 .subdevice
= PCI_ANY_ID
,
718 .driver_data
= (kernel_ulong_t
)&sdhci_ene_712
,
722 .vendor
= PCI_VENDOR_ID_ENE
,
723 .device
= PCI_DEVICE_ID_ENE_CB714_SD
,
724 .subvendor
= PCI_ANY_ID
,
725 .subdevice
= PCI_ANY_ID
,
726 .driver_data
= (kernel_ulong_t
)&sdhci_ene_714
,
730 .vendor
= PCI_VENDOR_ID_ENE
,
731 .device
= PCI_DEVICE_ID_ENE_CB714_SD_2
,
732 .subvendor
= PCI_ANY_ID
,
733 .subdevice
= PCI_ANY_ID
,
734 .driver_data
= (kernel_ulong_t
)&sdhci_ene_714
,
738 .vendor
= PCI_VENDOR_ID_MARVELL
,
739 .device
= PCI_DEVICE_ID_MARVELL_88ALP01_SD
,
740 .subvendor
= PCI_ANY_ID
,
741 .subdevice
= PCI_ANY_ID
,
742 .driver_data
= (kernel_ulong_t
)&sdhci_cafe
,
746 .vendor
= PCI_VENDOR_ID_JMICRON
,
747 .device
= PCI_DEVICE_ID_JMICRON_JMB38X_SD
,
748 .subvendor
= PCI_ANY_ID
,
749 .subdevice
= PCI_ANY_ID
,
750 .driver_data
= (kernel_ulong_t
)&sdhci_jmicron
,
754 .vendor
= PCI_VENDOR_ID_JMICRON
,
755 .device
= PCI_DEVICE_ID_JMICRON_JMB38X_MMC
,
756 .subvendor
= PCI_ANY_ID
,
757 .subdevice
= PCI_ANY_ID
,
758 .driver_data
= (kernel_ulong_t
)&sdhci_jmicron
,
762 .vendor
= PCI_VENDOR_ID_JMICRON
,
763 .device
= PCI_DEVICE_ID_JMICRON_JMB388_SD
,
764 .subvendor
= PCI_ANY_ID
,
765 .subdevice
= PCI_ANY_ID
,
766 .driver_data
= (kernel_ulong_t
)&sdhci_jmicron
,
770 .vendor
= PCI_VENDOR_ID_JMICRON
,
771 .device
= PCI_DEVICE_ID_JMICRON_JMB388_ESD
,
772 .subvendor
= PCI_ANY_ID
,
773 .subdevice
= PCI_ANY_ID
,
774 .driver_data
= (kernel_ulong_t
)&sdhci_jmicron
,
778 .vendor
= PCI_VENDOR_ID_SYSKONNECT
,
780 .subvendor
= PCI_ANY_ID
,
781 .subdevice
= PCI_ANY_ID
,
782 .driver_data
= (kernel_ulong_t
)&sdhci_syskt
,
786 .vendor
= PCI_VENDOR_ID_VIA
,
788 .subvendor
= PCI_ANY_ID
,
789 .subdevice
= PCI_ANY_ID
,
790 .driver_data
= (kernel_ulong_t
)&sdhci_via
,
794 .vendor
= PCI_VENDOR_ID_INTEL
,
795 .device
= PCI_DEVICE_ID_INTEL_MRST_SD0
,
796 .subvendor
= PCI_ANY_ID
,
797 .subdevice
= PCI_ANY_ID
,
798 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mrst_hc0
,
802 .vendor
= PCI_VENDOR_ID_INTEL
,
803 .device
= PCI_DEVICE_ID_INTEL_MRST_SD1
,
804 .subvendor
= PCI_ANY_ID
,
805 .subdevice
= PCI_ANY_ID
,
806 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mrst_hc1_hc2
,
810 .vendor
= PCI_VENDOR_ID_INTEL
,
811 .device
= PCI_DEVICE_ID_INTEL_MRST_SD2
,
812 .subvendor
= PCI_ANY_ID
,
813 .subdevice
= PCI_ANY_ID
,
814 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mrst_hc1_hc2
,
818 .vendor
= PCI_VENDOR_ID_INTEL
,
819 .device
= PCI_DEVICE_ID_INTEL_MFD_SD
,
820 .subvendor
= PCI_ANY_ID
,
821 .subdevice
= PCI_ANY_ID
,
822 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mfd_sd
,
826 .vendor
= PCI_VENDOR_ID_INTEL
,
827 .device
= PCI_DEVICE_ID_INTEL_MFD_SDIO1
,
828 .subvendor
= PCI_ANY_ID
,
829 .subdevice
= PCI_ANY_ID
,
830 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mfd_sdio
,
834 .vendor
= PCI_VENDOR_ID_INTEL
,
835 .device
= PCI_DEVICE_ID_INTEL_MFD_SDIO2
,
836 .subvendor
= PCI_ANY_ID
,
837 .subdevice
= PCI_ANY_ID
,
838 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mfd_sdio
,
842 .vendor
= PCI_VENDOR_ID_INTEL
,
843 .device
= PCI_DEVICE_ID_INTEL_MFD_EMMC0
,
844 .subvendor
= PCI_ANY_ID
,
845 .subdevice
= PCI_ANY_ID
,
846 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mfd_emmc
,
850 .vendor
= PCI_VENDOR_ID_INTEL
,
851 .device
= PCI_DEVICE_ID_INTEL_MFD_EMMC1
,
852 .subvendor
= PCI_ANY_ID
,
853 .subdevice
= PCI_ANY_ID
,
854 .driver_data
= (kernel_ulong_t
)&sdhci_intel_mfd_emmc
,
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
,
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
,
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
,
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
,
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
,
897 { /* Generic SD host controller */
898 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI
<< 8), 0xFFFF00)
901 { /* end: all zeroes */ },
904 MODULE_DEVICE_TABLE(pci
, pci_ids
);
906 /*****************************************************************************\
908 * SDHCI core callbacks *
910 \*****************************************************************************/
912 static int sdhci_pci_enable_dma(struct sdhci_host
*host
)
914 struct sdhci_pci_slot
*slot
;
915 struct pci_dev
*pdev
;
918 slot
= sdhci_priv(host
);
919 pdev
= slot
->chip
->pdev
;
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");
928 ret
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
932 pci_set_master(pdev
);
937 static int sdhci_pci_8bit_width(struct sdhci_host
*host
, int width
)
941 ctrl
= sdhci_readb(host
, SDHCI_HOST_CONTROL
);
944 case MMC_BUS_WIDTH_8
:
945 ctrl
|= SDHCI_CTRL_8BITBUS
;
946 ctrl
&= ~SDHCI_CTRL_4BITBUS
;
948 case MMC_BUS_WIDTH_4
:
949 ctrl
|= SDHCI_CTRL_4BITBUS
;
950 ctrl
&= ~SDHCI_CTRL_8BITBUS
;
953 ctrl
&= ~(SDHCI_CTRL_8BITBUS
| SDHCI_CTRL_4BITBUS
);
957 sdhci_writeb(host
, ctrl
, SDHCI_HOST_CONTROL
);
962 static void sdhci_pci_hw_reset(struct sdhci_host
*host
)
964 struct sdhci_pci_slot
*slot
= sdhci_priv(host
);
965 int rst_n_gpio
= slot
->rst_n_gpio
;
967 if (!gpio_is_valid(rst_n_gpio
))
969 gpio_set_value_cansleep(rst_n_gpio
, 0);
970 /* For eMMC, minimum is 1us but give it 10us for good measure */
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);
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
,
983 /*****************************************************************************\
987 \*****************************************************************************/
991 static int sdhci_pci_suspend(struct pci_dev
*pdev
, pm_message_t state
)
993 struct sdhci_pci_chip
*chip
;
994 struct sdhci_pci_slot
*slot
;
995 mmc_pm_flag_t slot_pm_flags
;
996 mmc_pm_flag_t pm_flags
= 0;
999 chip
= pci_get_drvdata(pdev
);
1003 for (i
= 0; i
< chip
->num_slots
; i
++) {
1004 slot
= chip
->slots
[i
];
1008 ret
= sdhci_suspend_host(slot
->host
, state
);
1011 for (i
--; i
>= 0; i
--)
1012 sdhci_resume_host(chip
->slots
[i
]->host
);
1016 slot_pm_flags
= slot
->host
->mmc
->pm_flags
;
1017 if (slot_pm_flags
& MMC_PM_WAKE_SDIO_IRQ
)
1018 sdhci_enable_irq_wakeups(slot
->host
);
1020 pm_flags
|= slot_pm_flags
;
1023 if (chip
->fixes
&& chip
->fixes
->suspend
) {
1024 ret
= chip
->fixes
->suspend(chip
, state
);
1026 for (i
= chip
->num_slots
- 1; i
>= 0; i
--)
1027 sdhci_resume_host(chip
->slots
[i
]->host
);
1032 pci_save_state(pdev
);
1033 if (pm_flags
& MMC_PM_KEEP_POWER
) {
1034 if (pm_flags
& MMC_PM_WAKE_SDIO_IRQ
) {
1035 pci_pme_active(pdev
, true);
1036 pci_enable_wake(pdev
, PCI_D3hot
, 1);
1038 pci_set_power_state(pdev
, PCI_D3hot
);
1040 pci_enable_wake(pdev
, pci_choose_state(pdev
, state
), 0);
1041 pci_disable_device(pdev
);
1042 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
1048 static int sdhci_pci_resume(struct pci_dev
*pdev
)
1050 struct sdhci_pci_chip
*chip
;
1051 struct sdhci_pci_slot
*slot
;
1054 chip
= pci_get_drvdata(pdev
);
1058 pci_set_power_state(pdev
, PCI_D0
);
1059 pci_restore_state(pdev
);
1060 ret
= pci_enable_device(pdev
);
1064 if (chip
->fixes
&& chip
->fixes
->resume
) {
1065 ret
= chip
->fixes
->resume(chip
);
1070 for (i
= 0; i
< chip
->num_slots
; i
++) {
1071 slot
= chip
->slots
[i
];
1075 ret
= sdhci_resume_host(slot
->host
);
1083 #else /* CONFIG_PM */
1085 #define sdhci_pci_suspend NULL
1086 #define sdhci_pci_resume NULL
1088 #endif /* CONFIG_PM */
1090 #ifdef CONFIG_PM_RUNTIME
1092 static int sdhci_pci_runtime_suspend(struct device
*dev
)
1094 struct pci_dev
*pdev
= container_of(dev
, struct pci_dev
, dev
);
1095 struct sdhci_pci_chip
*chip
;
1096 struct sdhci_pci_slot
*slot
;
1097 pm_message_t state
= { .event
= PM_EVENT_SUSPEND
};
1100 chip
= pci_get_drvdata(pdev
);
1104 for (i
= 0; i
< chip
->num_slots
; i
++) {
1105 slot
= chip
->slots
[i
];
1109 ret
= sdhci_runtime_suspend_host(slot
->host
);
1112 for (i
--; i
>= 0; i
--)
1113 sdhci_runtime_resume_host(chip
->slots
[i
]->host
);
1118 if (chip
->fixes
&& chip
->fixes
->suspend
) {
1119 ret
= chip
->fixes
->suspend(chip
, state
);
1121 for (i
= chip
->num_slots
- 1; i
>= 0; i
--)
1122 sdhci_runtime_resume_host(chip
->slots
[i
]->host
);
1130 static int sdhci_pci_runtime_resume(struct device
*dev
)
1132 struct pci_dev
*pdev
= container_of(dev
, struct pci_dev
, dev
);
1133 struct sdhci_pci_chip
*chip
;
1134 struct sdhci_pci_slot
*slot
;
1137 chip
= pci_get_drvdata(pdev
);
1141 if (chip
->fixes
&& chip
->fixes
->resume
) {
1142 ret
= chip
->fixes
->resume(chip
);
1147 for (i
= 0; i
< chip
->num_slots
; i
++) {
1148 slot
= chip
->slots
[i
];
1152 ret
= sdhci_runtime_resume_host(slot
->host
);
1160 static int sdhci_pci_runtime_idle(struct device
*dev
)
1167 #define sdhci_pci_runtime_suspend NULL
1168 #define sdhci_pci_runtime_resume NULL
1169 #define sdhci_pci_runtime_idle NULL
1173 static const struct dev_pm_ops sdhci_pci_pm_ops
= {
1174 .runtime_suspend
= sdhci_pci_runtime_suspend
,
1175 .runtime_resume
= sdhci_pci_runtime_resume
,
1176 .runtime_idle
= sdhci_pci_runtime_idle
,
1179 /*****************************************************************************\
1181 * Device probing/removal *
1183 \*****************************************************************************/
1185 static struct sdhci_pci_slot
* __devinit
sdhci_pci_probe_slot(
1186 struct pci_dev
*pdev
, struct sdhci_pci_chip
*chip
, int bar
)
1188 struct sdhci_pci_slot
*slot
;
1189 struct sdhci_host
*host
;
1192 if (!(pci_resource_flags(pdev
, bar
) & IORESOURCE_MEM
)) {
1193 dev_err(&pdev
->dev
, "BAR %d is not iomem. Aborting.\n", bar
);
1194 return ERR_PTR(-ENODEV
);
1197 if (pci_resource_len(pdev
, bar
) != 0x100) {
1198 dev_err(&pdev
->dev
, "Invalid iomem size. You may "
1199 "experience problems.\n");
1202 if ((pdev
->class & 0x0000FF) == PCI_SDHCI_IFVENDOR
) {
1203 dev_err(&pdev
->dev
, "Vendor specific interface. Aborting.\n");
1204 return ERR_PTR(-ENODEV
);
1207 if ((pdev
->class & 0x0000FF) > PCI_SDHCI_IFVENDOR
) {
1208 dev_err(&pdev
->dev
, "Unknown interface. Aborting.\n");
1209 return ERR_PTR(-ENODEV
);
1212 host
= sdhci_alloc_host(&pdev
->dev
, sizeof(struct sdhci_pci_slot
));
1214 dev_err(&pdev
->dev
, "cannot allocate host\n");
1215 return ERR_CAST(host
);
1218 slot
= sdhci_priv(host
);
1222 slot
->pci_bar
= bar
;
1223 slot
->rst_n_gpio
= -EINVAL
;
1225 host
->hw_name
= "PCI";
1226 host
->ops
= &sdhci_pci_ops
;
1227 host
->quirks
= chip
->quirks
;
1229 host
->irq
= pdev
->irq
;
1231 ret
= pci_request_region(pdev
, bar
, mmc_hostname(host
->mmc
));
1233 dev_err(&pdev
->dev
, "cannot request region\n");
1237 host
->ioaddr
= pci_ioremap_bar(pdev
, bar
);
1238 if (!host
->ioaddr
) {
1239 dev_err(&pdev
->dev
, "failed to remap registers\n");
1244 if (chip
->fixes
&& chip
->fixes
->probe_slot
) {
1245 ret
= chip
->fixes
->probe_slot(slot
);
1250 host
->mmc
->pm_caps
= MMC_PM_KEEP_POWER
| MMC_PM_WAKE_SDIO_IRQ
;
1252 ret
= sdhci_add_host(host
);
1259 if (chip
->fixes
&& chip
->fixes
->remove_slot
)
1260 chip
->fixes
->remove_slot(slot
, 0);
1263 iounmap(host
->ioaddr
);
1266 pci_release_region(pdev
, bar
);
1269 sdhci_free_host(host
);
1271 return ERR_PTR(ret
);
1274 static void sdhci_pci_remove_slot(struct sdhci_pci_slot
*slot
)
1280 scratch
= readl(slot
->host
->ioaddr
+ SDHCI_INT_STATUS
);
1281 if (scratch
== (u32
)-1)
1284 sdhci_remove_host(slot
->host
, dead
);
1286 if (slot
->chip
->fixes
&& slot
->chip
->fixes
->remove_slot
)
1287 slot
->chip
->fixes
->remove_slot(slot
, dead
);
1289 pci_release_region(slot
->chip
->pdev
, slot
->pci_bar
);
1291 sdhci_free_host(slot
->host
);
1294 static void __devinit
sdhci_pci_runtime_pm_allow(struct device
*dev
)
1296 pm_runtime_put_noidle(dev
);
1297 pm_runtime_allow(dev
);
1298 pm_runtime_set_autosuspend_delay(dev
, 50);
1299 pm_runtime_use_autosuspend(dev
);
1300 pm_suspend_ignore_children(dev
, 1);
1303 static void __devexit
sdhci_pci_runtime_pm_forbid(struct device
*dev
)
1305 pm_runtime_forbid(dev
);
1306 pm_runtime_get_noresume(dev
);
1309 static int __devinit
sdhci_pci_probe(struct pci_dev
*pdev
,
1310 const struct pci_device_id
*ent
)
1312 struct sdhci_pci_chip
*chip
;
1313 struct sdhci_pci_slot
*slot
;
1315 u8 slots
, first_bar
;
1318 BUG_ON(pdev
== NULL
);
1319 BUG_ON(ent
== NULL
);
1321 dev_info(&pdev
->dev
, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1322 (int)pdev
->vendor
, (int)pdev
->device
, (int)pdev
->revision
);
1324 ret
= pci_read_config_byte(pdev
, PCI_SLOT_INFO
, &slots
);
1328 slots
= PCI_SLOT_INFO_SLOTS(slots
) + 1;
1329 dev_dbg(&pdev
->dev
, "found %d slot(s)\n", slots
);
1333 BUG_ON(slots
> MAX_SLOTS
);
1335 ret
= pci_read_config_byte(pdev
, PCI_SLOT_INFO
, &first_bar
);
1339 first_bar
&= PCI_SLOT_INFO_FIRST_BAR_MASK
;
1341 if (first_bar
> 5) {
1342 dev_err(&pdev
->dev
, "Invalid first BAR. Aborting.\n");
1346 ret
= pci_enable_device(pdev
);
1350 chip
= kzalloc(sizeof(struct sdhci_pci_chip
), GFP_KERNEL
);
1357 chip
->fixes
= (const struct sdhci_pci_fixes
*)ent
->driver_data
;
1359 chip
->quirks
= chip
->fixes
->quirks
;
1360 chip
->num_slots
= slots
;
1362 pci_set_drvdata(pdev
, chip
);
1364 if (chip
->fixes
&& chip
->fixes
->probe
) {
1365 ret
= chip
->fixes
->probe(chip
);
1370 slots
= chip
->num_slots
; /* Quirk may have changed this */
1372 for (i
= 0; i
< slots
; i
++) {
1373 slot
= sdhci_pci_probe_slot(pdev
, chip
, first_bar
+ i
);
1375 for (i
--; i
>= 0; i
--)
1376 sdhci_pci_remove_slot(chip
->slots
[i
]);
1377 ret
= PTR_ERR(slot
);
1381 chip
->slots
[i
] = slot
;
1384 sdhci_pci_runtime_pm_allow(&pdev
->dev
);
1389 pci_set_drvdata(pdev
, NULL
);
1393 pci_disable_device(pdev
);
1397 static void __devexit
sdhci_pci_remove(struct pci_dev
*pdev
)
1400 struct sdhci_pci_chip
*chip
;
1402 sdhci_pci_runtime_pm_forbid(&pdev
->dev
);
1404 chip
= pci_get_drvdata(pdev
);
1407 for (i
= 0; i
< chip
->num_slots
; i
++)
1408 sdhci_pci_remove_slot(chip
->slots
[i
]);
1410 pci_set_drvdata(pdev
, NULL
);
1414 pci_disable_device(pdev
);
1417 static struct pci_driver sdhci_driver
= {
1418 .name
= "sdhci-pci",
1419 .id_table
= pci_ids
,
1420 .probe
= sdhci_pci_probe
,
1421 .remove
= __devexit_p(sdhci_pci_remove
),
1422 .suspend
= sdhci_pci_suspend
,
1423 .resume
= sdhci_pci_resume
,
1425 .pm
= &sdhci_pci_pm_ops
1429 /*****************************************************************************\
1431 * Driver init/exit *
1433 \*****************************************************************************/
1435 static int __init
sdhci_drv_init(void)
1437 return pci_register_driver(&sdhci_driver
);
1440 static void __exit
sdhci_drv_exit(void)
1442 pci_unregister_driver(&sdhci_driver
);
1445 module_init(sdhci_drv_init
);
1446 module_exit(sdhci_drv_exit
);
1448 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1449 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1450 MODULE_LICENSE("GPL");