cregit-Linux how code gets into the kernel

Release 4.14 drivers/mmc/host/sdhci.h

Directory: drivers/mmc/host
/*
 *  linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
 *
 * Header file for Host Controller registers and I/O accessors.
 *
 *  Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */
#ifndef __SDHCI_HW_H

#define __SDHCI_HW_H

#include <linux/scatterlist.h>
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/interrupt.h>

#include <linux/mmc/host.h>

/*
 * Controller registers
 */


#define SDHCI_DMA_ADDRESS	0x00

#define SDHCI_ARGUMENT2		SDHCI_DMA_ADDRESS


#define SDHCI_BLOCK_SIZE	0x04

#define  SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))


#define SDHCI_BLOCK_COUNT	0x06


#define SDHCI_ARGUMENT		0x08


#define SDHCI_TRANSFER_MODE	0x0C

#define  SDHCI_TRNS_DMA		0x01

#define  SDHCI_TRNS_BLK_CNT_EN	0x02

#define  SDHCI_TRNS_AUTO_CMD12	0x04

#define  SDHCI_TRNS_AUTO_CMD23	0x08

#define  SDHCI_TRNS_READ	0x10

#define  SDHCI_TRNS_MULTI	0x20


#define SDHCI_COMMAND		0x0E

#define  SDHCI_CMD_RESP_MASK	0x03

#define  SDHCI_CMD_CRC		0x08

#define  SDHCI_CMD_INDEX	0x10

#define  SDHCI_CMD_DATA		0x20

#define  SDHCI_CMD_ABORTCMD	0xC0


#define  SDHCI_CMD_RESP_NONE	0x00

#define  SDHCI_CMD_RESP_LONG	0x01

#define  SDHCI_CMD_RESP_SHORT	0x02

#define  SDHCI_CMD_RESP_SHORT_BUSY 0x03


#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))

#define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)


#define SDHCI_RESPONSE		0x10


#define SDHCI_BUFFER		0x20


#define SDHCI_PRESENT_STATE	0x24

#define  SDHCI_CMD_INHIBIT	0x00000001

#define  SDHCI_DATA_INHIBIT	0x00000002

#define  SDHCI_DOING_WRITE	0x00000100

#define  SDHCI_DOING_READ	0x00000200

#define  SDHCI_SPACE_AVAILABLE	0x00000400

#define  SDHCI_DATA_AVAILABLE	0x00000800

#define  SDHCI_CARD_PRESENT	0x00010000

#define  SDHCI_WRITE_PROTECT	0x00080000

#define  SDHCI_DATA_LVL_MASK	0x00F00000

#define   SDHCI_DATA_LVL_SHIFT	20

#define   SDHCI_DATA_0_LVL_MASK	0x00100000

#define  SDHCI_CMD_LVL		0x01000000


#define SDHCI_HOST_CONTROL	0x28

#define  SDHCI_CTRL_LED		0x01

#define  SDHCI_CTRL_4BITBUS	0x02

#define  SDHCI_CTRL_HISPD	0x04

#define  SDHCI_CTRL_DMA_MASK	0x18

#define   SDHCI_CTRL_SDMA	0x00

#define   SDHCI_CTRL_ADMA1	0x08

#define   SDHCI_CTRL_ADMA32	0x10

#define   SDHCI_CTRL_ADMA64	0x18

#define   SDHCI_CTRL_8BITBUS	0x20

#define  SDHCI_CTRL_CDTEST_INS	0x40

#define  SDHCI_CTRL_CDTEST_EN	0x80


#define SDHCI_POWER_CONTROL	0x29

#define  SDHCI_POWER_ON		0x01

#define  SDHCI_POWER_180	0x0A

#define  SDHCI_POWER_300	0x0C

#define  SDHCI_POWER_330	0x0E


#define SDHCI_BLOCK_GAP_CONTROL	0x2A


#define SDHCI_WAKE_UP_CONTROL	0x2B

#define  SDHCI_WAKE_ON_INT	0x01

#define  SDHCI_WAKE_ON_INSERT	0x02

#define  SDHCI_WAKE_ON_REMOVE	0x04


#define SDHCI_CLOCK_CONTROL	0x2C

#define  SDHCI_DIVIDER_SHIFT	8

#define  SDHCI_DIVIDER_HI_SHIFT	6

#define  SDHCI_DIV_MASK	0xFF

#define  SDHCI_DIV_MASK_LEN	8

#define  SDHCI_DIV_HI_MASK	0x300

#define  SDHCI_PROG_CLOCK_MODE	0x0020

#define  SDHCI_CLOCK_CARD_EN	0x0004

#define  SDHCI_CLOCK_INT_STABLE	0x0002

#define  SDHCI_CLOCK_INT_EN	0x0001


#define SDHCI_TIMEOUT_CONTROL	0x2E


#define SDHCI_SOFTWARE_RESET	0x2F

#define  SDHCI_RESET_ALL	0x01

#define  SDHCI_RESET_CMD	0x02

#define  SDHCI_RESET_DATA	0x04


#define SDHCI_INT_STATUS	0x30

#define SDHCI_INT_ENABLE	0x34

#define SDHCI_SIGNAL_ENABLE	0x38

#define  SDHCI_INT_RESPONSE	0x00000001

#define  SDHCI_INT_DATA_END	0x00000002

#define  SDHCI_INT_BLK_GAP	0x00000004

#define  SDHCI_INT_DMA_END	0x00000008

#define  SDHCI_INT_SPACE_AVAIL	0x00000010

#define  SDHCI_INT_DATA_AVAIL	0x00000020

#define  SDHCI_INT_CARD_INSERT	0x00000040

#define  SDHCI_INT_CARD_REMOVE	0x00000080

#define  SDHCI_INT_CARD_INT	0x00000100

#define  SDHCI_INT_RETUNE	0x00001000

#define  SDHCI_INT_CQE		0x00004000

#define  SDHCI_INT_ERROR	0x00008000

#define  SDHCI_INT_TIMEOUT	0x00010000

#define  SDHCI_INT_CRC		0x00020000

#define  SDHCI_INT_END_BIT	0x00040000

#define  SDHCI_INT_INDEX	0x00080000

#define  SDHCI_INT_DATA_TIMEOUT	0x00100000

#define  SDHCI_INT_DATA_CRC	0x00200000

#define  SDHCI_INT_DATA_END_BIT	0x00400000

#define  SDHCI_INT_BUS_POWER	0x00800000

#define  SDHCI_INT_ACMD12ERR	0x01000000

#define  SDHCI_INT_ADMA_ERROR	0x02000000


#define  SDHCI_INT_NORMAL_MASK	0x00007FFF

#define  SDHCI_INT_ERROR_MASK	0xFFFF8000


#define  SDHCI_INT_CMD_MASK	(SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
                SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)

#define  SDHCI_INT_DATA_MASK	(SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
                SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
                SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
                SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR | \
                SDHCI_INT_BLK_GAP)

#define SDHCI_INT_ALL_MASK	((unsigned int)-1)


#define SDHCI_CQE_INT_ERR_MASK ( \
        SDHCI_INT_ADMA_ERROR | SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | \
        SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | \
        SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)


#define SDHCI_CQE_INT_MASK (SDHCI_CQE_INT_ERR_MASK | SDHCI_INT_CQE)


#define SDHCI_ACMD12_ERR	0x3C


#define SDHCI_HOST_CONTROL2		0x3E

#define  SDHCI_CTRL_UHS_MASK		0x0007

#define   SDHCI_CTRL_UHS_SDR12		0x0000

#define   SDHCI_CTRL_UHS_SDR25		0x0001

#define   SDHCI_CTRL_UHS_SDR50		0x0002

#define   SDHCI_CTRL_UHS_SDR104		0x0003

#define   SDHCI_CTRL_UHS_DDR50		0x0004

#define   SDHCI_CTRL_HS400		0x0005 
/* Non-standard */

#define  SDHCI_CTRL_VDD_180		0x0008

#define  SDHCI_CTRL_DRV_TYPE_MASK	0x0030

#define   SDHCI_CTRL_DRV_TYPE_B		0x0000

#define   SDHCI_CTRL_DRV_TYPE_A		0x0010

#define   SDHCI_CTRL_DRV_TYPE_C		0x0020

#define   SDHCI_CTRL_DRV_TYPE_D		0x0030

#define  SDHCI_CTRL_EXEC_TUNING		0x0040

#define  SDHCI_CTRL_TUNED_CLK		0x0080

#define  SDHCI_CTRL_PRESET_VAL_ENABLE	0x8000


#define SDHCI_CAPABILITIES	0x40

#define  SDHCI_TIMEOUT_CLK_MASK	0x0000003F

#define  SDHCI_TIMEOUT_CLK_SHIFT 0

#define  SDHCI_TIMEOUT_CLK_UNIT	0x00000080

#define  SDHCI_CLOCK_BASE_MASK	0x00003F00

#define  SDHCI_CLOCK_V3_BASE_MASK	0x0000FF00

#define  SDHCI_CLOCK_BASE_SHIFT	8

#define  SDHCI_MAX_BLOCK_MASK	0x00030000

#define  SDHCI_MAX_BLOCK_SHIFT  16

#define  SDHCI_CAN_DO_8BIT	0x00040000

#define  SDHCI_CAN_DO_ADMA2	0x00080000

#define  SDHCI_CAN_DO_ADMA1	0x00100000

#define  SDHCI_CAN_DO_HISPD	0x00200000

#define  SDHCI_CAN_DO_SDMA	0x00400000

#define  SDHCI_CAN_DO_SUSPEND	0x00800000

#define  SDHCI_CAN_VDD_330	0x01000000

#define  SDHCI_CAN_VDD_300	0x02000000

#define  SDHCI_CAN_VDD_180	0x04000000

#define  SDHCI_CAN_64BIT	0x10000000


#define  SDHCI_SUPPORT_SDR50	0x00000001

#define  SDHCI_SUPPORT_SDR104	0x00000002

#define  SDHCI_SUPPORT_DDR50	0x00000004

#define  SDHCI_DRIVER_TYPE_A	0x00000010

#define  SDHCI_DRIVER_TYPE_C	0x00000020

#define  SDHCI_DRIVER_TYPE_D	0x00000040

#define  SDHCI_RETUNING_TIMER_COUNT_MASK	0x00000F00

#define  SDHCI_RETUNING_TIMER_COUNT_SHIFT	8

#define  SDHCI_USE_SDR50_TUNING			0x00002000

#define  SDHCI_RETUNING_MODE_MASK		0x0000C000

#define  SDHCI_RETUNING_MODE_SHIFT		14

#define  SDHCI_CLOCK_MUL_MASK	0x00FF0000

#define  SDHCI_CLOCK_MUL_SHIFT	16

#define  SDHCI_SUPPORT_HS400	0x80000000 
/* Non-standard */


#define SDHCI_CAPABILITIES_1	0x44


#define SDHCI_MAX_CURRENT		0x48

#define  SDHCI_MAX_CURRENT_LIMIT	0xFF

#define  SDHCI_MAX_CURRENT_330_MASK	0x0000FF

#define  SDHCI_MAX_CURRENT_330_SHIFT	0

#define  SDHCI_MAX_CURRENT_300_MASK	0x00FF00

#define  SDHCI_MAX_CURRENT_300_SHIFT	8

#define  SDHCI_MAX_CURRENT_180_MASK	0xFF0000

#define  SDHCI_MAX_CURRENT_180_SHIFT	16

#define   SDHCI_MAX_CURRENT_MULTIPLIER	4

/* 4C-4F reserved for more max current */


#define SDHCI_SET_ACMD12_ERROR	0x50

#define SDHCI_SET_INT_ERROR	0x52


#define SDHCI_ADMA_ERROR	0x54

/* 55-57 reserved */


#define SDHCI_ADMA_ADDRESS	0x58

#define SDHCI_ADMA_ADDRESS_HI	0x5C

/* 60-FB reserved */


#define SDHCI_PRESET_FOR_SDR12 0x66

#define SDHCI_PRESET_FOR_SDR25 0x68

#define SDHCI_PRESET_FOR_SDR50 0x6A

#define SDHCI_PRESET_FOR_SDR104        0x6C

#define SDHCI_PRESET_FOR_DDR50 0x6E

#define SDHCI_PRESET_FOR_HS400 0x74 
/* Non-standard */

#define SDHCI_PRESET_DRV_MASK  0xC000

#define SDHCI_PRESET_DRV_SHIFT  14

#define SDHCI_PRESET_CLKGEN_SEL_MASK   0x400

#define SDHCI_PRESET_CLKGEN_SEL_SHIFT	10

#define SDHCI_PRESET_SDCLK_FREQ_MASK   0x3FF

#define SDHCI_PRESET_SDCLK_FREQ_SHIFT	0


#define SDHCI_SLOT_INT_STATUS	0xFC


#define SDHCI_HOST_VERSION	0xFE

#define  SDHCI_VENDOR_VER_MASK	0xFF00

#define  SDHCI_VENDOR_VER_SHIFT	8

#define  SDHCI_SPEC_VER_MASK	0x00FF

#define  SDHCI_SPEC_VER_SHIFT	0

#define   SDHCI_SPEC_100	0

#define   SDHCI_SPEC_200	1

#define   SDHCI_SPEC_300	2

/*
 * End of controller registers.
 */


#define SDHCI_MAX_DIV_SPEC_200	256

#define SDHCI_MAX_DIV_SPEC_300	2046

/*
 * Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
 */

#define SDHCI_DEFAULT_BOUNDARY_SIZE  (512 * 1024)

#define SDHCI_DEFAULT_BOUNDARY_ARG   (ilog2(SDHCI_DEFAULT_BOUNDARY_SIZE) - 12)

/* ADMA2 32-bit DMA descriptor size */

#define SDHCI_ADMA2_32_DESC_SZ	8

/* ADMA2 32-bit descriptor */

struct sdhci_adma2_32_desc {
	
__le16	cmd;
	
__le16	len;
	
__le32	addr;
}  __packed __aligned(4);

/* ADMA2 data alignment */

#define SDHCI_ADMA2_ALIGN	4

#define SDHCI_ADMA2_MASK	(SDHCI_ADMA2_ALIGN - 1)

/*
 * ADMA2 descriptor alignment.  Some controllers (e.g. Intel) require 8 byte
 * alignment for the descriptor table even in 32-bit DMA mode.  Memory
 * allocation is at least 8 byte aligned anyway, so just stipulate 8 always.
 */

#define SDHCI_ADMA2_DESC_ALIGN	8

/* ADMA2 64-bit DMA descriptor size */

#define SDHCI_ADMA2_64_DESC_SZ	12

/*
 * ADMA2 64-bit descriptor. Note 12-byte descriptor can't always be 8-byte
 * aligned.
 */

struct sdhci_adma2_64_desc {
	
__le16	cmd;
	
__le16	len;
	
__le32	addr_lo;
	
__le32	addr_hi;
}  __packed __aligned(4);


#define ADMA2_TRAN_VALID	0x21

#define ADMA2_NOP_END_VALID	0x3

#define ADMA2_END		0x2

/*
 * Maximum segments assuming a 512KiB maximum requisition size and a minimum
 * 4KiB page size.
 */

#define SDHCI_MAX_SEGS		128

/* Allow for a a command request and a data request at the same time */

#define SDHCI_MAX_MRQS		2


enum sdhci_cookie {
	
COOKIE_UNMAPPED,
	
COOKIE_PRE_MAPPED,	/* mapped by sdhci_pre_req() */
	
COOKIE_MAPPED,		/* mapped by sdhci_prepare_data() */
};


struct sdhci_host {
	/* Data set by hardware interface driver */
	
const char *hw_name;	/* Hardware bus name */

	
unsigned int quirks;	/* Deviations from spec. */

/* Controller doesn't honor resets unless we touch the clock register */

#define SDHCI_QUIRK_CLOCK_BEFORE_RESET			(1<<0)
/* Controller has bad caps bits, but really supports DMA */

#define SDHCI_QUIRK_FORCE_DMA				(1<<1)
/* Controller doesn't like to be reset when there is no card inserted. */

#define SDHCI_QUIRK_NO_CARD_NO_RESET			(1<<2)
/* Controller doesn't like clearing the power reg before a change */

#define SDHCI_QUIRK_SINGLE_POWER_WRITE			(1<<3)
/* Controller has flaky internal state so reset it on each ios change */

#define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS		(1<<4)
/* Controller has an unusable DMA engine */

#define SDHCI_QUIRK_BROKEN_DMA				(1<<5)
/* Controller has an unusable ADMA engine */

#define SDHCI_QUIRK_BROKEN_ADMA				(1<<6)
/* Controller can only DMA from 32-bit aligned addresses */

#define SDHCI_QUIRK_32BIT_DMA_ADDR			(1<<7)
/* Controller can only DMA chunk sizes that are a multiple of 32 bits */

#define SDHCI_QUIRK_32BIT_DMA_SIZE			(1<<8)
/* Controller can only ADMA chunks that are a multiple of 32 bits */

#define SDHCI_QUIRK_32BIT_ADMA_SIZE			(1<<9)
/* Controller needs to be reset after each request to stay stable */

#define SDHCI_QUIRK_RESET_AFTER_REQUEST			(1<<10)
/* Controller needs voltage and power writes to happen separately */

#define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER		(1<<11)
/* Controller provides an incorrect timeout value for transfers */

#define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL			(1<<12)
/* Controller has an issue with buffer bits for small transfers */

#define SDHCI_QUIRK_BROKEN_SMALL_PIO			(1<<13)
/* Controller does not provide transfer-complete interrupt when not busy */

#define SDHCI_QUIRK_NO_BUSY_IRQ				(1<<14)
/* Controller has unreliable card detection */

#define SDHCI_QUIRK_BROKEN_CARD_DETECTION		(1<<15)
/* Controller reports inverted write-protect state */

#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT		(1<<16)
/* Controller does not like fast PIO transfers */

#define SDHCI_QUIRK_PIO_NEEDS_DELAY			(1<<18)
/* Controller has to be forced to use block size of 2048 bytes */

#define SDHCI_QUIRK_FORCE_BLK_SZ_2048			(1<<20)
/* Controller cannot do multi-block transfers */

#define SDHCI_QUIRK_NO_MULTIBLOCK			(1<<21)
/* Controller can only handle 1-bit data transfers */

#define SDHCI_QUIRK_FORCE_1_BIT_DATA			(1<<22)
/* Controller needs 10ms delay between applying power and clock */

#define SDHCI_QUIRK_DELAY_AFTER_POWER			(1<<23)
/* Controller uses SDCLK instead of TMCLK for data timeouts */

#define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK		(1<<24)
/* Controller reports wrong base clock capability */

#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN		(1<<25)
/* Controller cannot support End Attribute in NOP ADMA descriptor */

#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC		(1<<26)
/* Controller is missing device caps. Use caps provided by host */

#define SDHCI_QUIRK_MISSING_CAPS			(1<<27)
/* Controller uses Auto CMD12 command to stop the transfer */

#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12		(1<<28)
/* Controller doesn't have HISPD bit field in HI-SPEED SD card */

#define SDHCI_QUIRK_NO_HISPD_BIT			(1<<29)
/* Controller treats ADMA descriptors with length 0000h incorrectly */

#define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC		(1<<30)
/* The read-only detection via SDHCI_PRESENT_STATE register is unstable */

#define SDHCI_QUIRK_UNSTABLE_RO_DETECT			(1<<31)

	
unsigned int quirks2;	/* More deviations from spec. */


#define SDHCI_QUIRK2_HOST_OFF_CARD_ON			(1<<0)

#define SDHCI_QUIRK2_HOST_NO_CMD23			(1<<1)
/* The system physically doesn't support 1.8v, even if the host does */

#define SDHCI_QUIRK2_NO_1_8_V				(1<<2)

#define SDHCI_QUIRK2_PRESET_VALUE_BROKEN		(1<<3)

#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON		(1<<4)
/* Controller has a non-standard host control register */

#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL		(1<<5)
/* Controller does not support HS200 */

#define SDHCI_QUIRK2_BROKEN_HS200			(1<<6)
/* Controller does not support DDR50 */

#define SDHCI_QUIRK2_BROKEN_DDR50			(1<<7)
/* Stop command (CMD12) can set Transfer Complete when not using MMC_RSP_BUSY */

#define SDHCI_QUIRK2_STOP_WITH_TC			(1<<8)
/* Controller does not support 64-bit DMA */

#define SDHCI_QUIRK2_BROKEN_64_BIT_DMA			(1<<9)
/* need clear transfer mode register before send cmd */

#define SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD	(1<<10)
/* Capability register bit-63 indicates HS400 support */

#define SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400		(1<<11)
/* forced tuned clock */

#define SDHCI_QUIRK2_TUNING_WORK_AROUND			(1<<12)
/* disable the block count for single block transactions */

#define SDHCI_QUIRK2_SUPPORT_SINGLE			(1<<13)
/* Controller broken with using ACMD23 */

#define SDHCI_QUIRK2_ACMD23_BROKEN			(1<<14)
/* Broken Clock divider zero in controller */

#define SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN		(1<<15)
/* Controller has CRC in 136 bit Command Response */

#define SDHCI_QUIRK2_RSP_136_HAS_CRC			(1<<16)

	
int irq;		/* Device IRQ */
	
void __iomem *ioaddr;	/* Mapped address */

	
const struct sdhci_ops *ops;	/* Low level hw interface */

	/* Internal data */
	
struct mmc_host *mmc;	/* MMC structure */
	
struct mmc_host_ops mmc_host_ops;	/* MMC host ops */
	
u64 dma_mask;		/* custom DMA mask */

#if IS_ENABLED(CONFIG_LEDS_CLASS)
	
struct led_classdev led;	/* LED control */
	
char led_name[32];
#endif

	
spinlock_t lock;	/* Mutex */

	
int flags;		/* Host attributes */

#define SDHCI_USE_SDMA		(1<<0)	/* Host is SDMA capable */

#define SDHCI_USE_ADMA		(1<<1)	/* Host is ADMA capable */

#define SDHCI_REQ_USE_DMA	(1<<2)	/* Use DMA for this req. */

#define SDHCI_DEVICE_DEAD	(1<<3)	/* Device unresponsive */

#define SDHCI_SDR50_NEEDS_TUNING (1<<4)	/* SDR50 needs tuning */

#define SDHCI_AUTO_CMD12	(1<<6)	/* Auto CMD12 support */

#define SDHCI_AUTO_CMD23	(1<<7)	/* Auto CMD23 support */

#define SDHCI_PV_ENABLED	(1<<8)	/* Preset value enabled */

#define SDHCI_SDIO_IRQ_ENABLED	(1<<9)	/* SDIO irq enabled */

#define SDHCI_USE_64_BIT_DMA	(1<<12)	/* Use 64-bit DMA */

#define SDHCI_HS400_TUNING	(1<<13)	/* Tuning for HS400 */

#define SDHCI_SIGNALING_330	(1<<14)	/* Host is capable of 3.3V signaling */

#define SDHCI_SIGNALING_180	(1<<15)	/* Host is capable of 1.8V signaling */

#define SDHCI_SIGNALING_120	(1<<16)	/* Host is capable of 1.2V signaling */

	
unsigned int version;	/* SDHCI spec. version */

	
unsigned int max_clk;	/* Max possible freq (MHz) */
	
unsigned int timeout_clk;	/* Timeout freq (KHz) */
	
unsigned int clk_mul;	/* Clock Muliplier value */

	
unsigned int clock;	/* Current clock (MHz) */
	
u8 pwr;			/* Current voltage */

	
bool runtime_suspended;	/* Host is runtime suspended */
	
bool bus_on;		/* Bus power prevents runtime suspend */
	
bool preset_enabled;	/* Preset is enabled */
	
bool pending_reset;	/* Cmd/data reset is pending */

	
struct mmc_request *mrqs_done[SDHCI_MAX_MRQS];	/* Requests done */
	
struct mmc_command *cmd;	/* Current command */
	
struct mmc_command *data_cmd;	/* Current data command */
	
struct mmc_data *data;	/* Current data request */
	
unsigned int data_early:1;	/* Data finished before cmd */

	
struct sg_mapping_iter sg_miter;	/* SG state for PIO */
	
unsigned int blocks;	/* remaining PIO blocks */

	
int sg_count;		/* Mapped sg entries */

	
void *adma_table;	/* ADMA descriptor table */
	
void *align_buffer;	/* Bounce buffer */

	
size_t adma_table_sz;	/* ADMA descriptor table size */
	
size_t align_buffer_sz;	/* Bounce buffer size */

	
dma_addr_t adma_addr;	/* Mapped ADMA descr. table */
	
dma_addr_t align_addr;	/* Mapped bounce buffer */

	
unsigned int desc_sz;	/* ADMA descriptor size */

	
struct tasklet_struct finish_tasklet;	/* Tasklet structures */

	
struct timer_list timer;	/* Timer for timeouts */
	
struct timer_list data_timer;	/* Timer for data timeouts */

	
u32 caps;		/* CAPABILITY_0 */
	
u32 caps1;		/* CAPABILITY_1 */
	
bool read_caps;		/* Capability flags have been read */

	
unsigned int            ocr_avail_sdio;	/* OCR bit masks */
	
unsigned int            ocr_avail_sd;
	
unsigned int            ocr_avail_mmc;
	
u32 ocr_mask;		/* available voltages */

	
unsigned		timing;		/* Current timing */

	
u32			thread_isr;

	/* cached registers */
	
u32			ier;

	
bool			cqe_on;		/* CQE is operating */
	
u32			cqe_ier;	/* CQE interrupt mask */
	
u32			cqe_err_ier;	/* CQE error interrupt mask */

	
wait_queue_head_t	buf_ready_int;	/* Waitqueue for Buffer Read Ready interrupt */
	
unsigned int		tuning_done;	/* Condition flag set when CMD19 succeeds */

	
unsigned int		tuning_count;	/* Timer count for re-tuning */
	
unsigned int		tuning_mode;	/* Re-tuning mode supported by host */

#define SDHCI_TUNING_MODE_1	0

#define SDHCI_TUNING_MODE_2	1

#define SDHCI_TUNING_MODE_3	2
	/* Delay (ms) between tuning commands */
	
int			tuning_delay;

	/* Host SDMA buffer boundary. */
	
u32			sdma_boundary;

	
unsigned long private[0] ____cacheline_aligned;
};


struct sdhci_ops {
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
	
u32		(*read_l)(struct sdhci_host *host, int reg);
	
u16		(*read_w)(struct sdhci_host *host, int reg);
	
u8		(*read_b)(struct sdhci_host *host, int reg);
	
void		(*write_l)(struct sdhci_host *host, u32 val, int reg);
	
void		(*write_w)(struct sdhci_host *host, u16 val, int reg);
	
void		(*write_b)(struct sdhci_host *host, u8 val, int reg);
#endif

	
void	(*set_clock)(struct sdhci_host *host, unsigned int clock);
	
void	(*set_power)(struct sdhci_host *host, unsigned char mode,
			     unsigned short vdd);

	
u32		(*irq)(struct sdhci_host *host, u32 intmask);

	
int		(*enable_dma)(struct sdhci_host *host);
	
unsigned int	(*get_max_clock)(struct sdhci_host *host);
	
unsigned int	(*get_min_clock)(struct sdhci_host *host);
	/* get_timeout_clock should return clk rate in unit of Hz */
	
unsigned int	(*get_timeout_clock)(struct sdhci_host *host);
	
unsigned int	(*get_max_timeout_count)(struct sdhci_host *host);
	
void		(*set_timeout)(struct sdhci_host *host,
				       struct mmc_command *cmd);
	
void		(*set_bus_width)(struct sdhci_host *host, int width);
	
void (*platform_send_init_74_clocks)(struct sdhci_host *host,
					     u8 power_mode);
	
unsigned int    (*get_ro)(struct sdhci_host *host);
	
void		(*reset)(struct sdhci_host *host, u8 mask);
	
int	(*platform_execute_tuning)(struct sdhci_host *host, u32 opcode);
	
void	(*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
	
void	(*hw_reset)(struct sdhci_host *host);
	
void    (*adma_workaround)(struct sdhci_host *host, u32 intmask);
	
void    (*card_event)(struct sdhci_host *host);
	
void	(*voltage_switch)(struct sdhci_host *host);
};

#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS


static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) { if (unlikely(host->ops->write_l)) host->ops->write_l(host, val, reg); else writel(val, host->ioaddr + reg); }

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static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) { if (unlikely(host->ops->write_w)) host->ops->write_w(host, val, reg); else writew(val, host->ioaddr + reg); }

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static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) { if (unlikely(host->ops->write_b)) host->ops->write_b(host, val, reg); else writeb(val, host->ioaddr + reg); }

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static inline u32 sdhci_readl(struct sdhci_host *host, int reg) { if (unlikely(host->ops->read_l)) return host->ops->read_l(host, reg); else return readl(host->ioaddr + reg); }

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static inline u16 sdhci_readw(struct sdhci_host *host, int reg) { if (unlikely(host->ops->read_w)) return host->ops->read_w(host, reg); else return readw(host->ioaddr + reg); }

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static inline u8 sdhci_readb(struct sdhci_host *host, int reg) { if (unlikely(host->ops->read_b)) return host->ops->read_b(host, reg); else return readb(host->ioaddr + reg); }

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#else
static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg) { writel(val, host->ioaddr + reg); }

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static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg) { writew(val, host->ioaddr + reg); }

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static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg) { writeb(val, host->ioaddr + reg); }

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static inline u32 sdhci_readl(struct sdhci_host *host, int reg) { return readl(host->ioaddr + reg); }

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static inline u16 sdhci_readw(struct sdhci_host *host, int reg) { return readw(host->ioaddr + reg); }

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static inline u8 sdhci_readb(struct sdhci_host *host, int reg) { return readb(host->ioaddr + reg); }

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#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */ struct sdhci_host *sdhci_alloc_host(struct device *dev, size_t priv_size); void sdhci_free_host(struct sdhci_host *host);
static inline void *sdhci_priv(struct sdhci_host *host) { return host->private; }

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void sdhci_card_detect(struct sdhci_host *host); void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps, u32 *caps1); int sdhci_setup_host(struct sdhci_host *host); void sdhci_cleanup_host(struct sdhci_host *host); int __sdhci_add_host(struct sdhci_host *host); int sdhci_add_host(struct sdhci_host *host); void sdhci_remove_host(struct sdhci_host *host, int dead); void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);
static inline void sdhci_read_caps(struct sdhci_host *host) { __sdhci_read_caps(host, NULL, NULL, NULL); }

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static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host) { return !!(host->flags & SDHCI_SDIO_IRQ_ENABLED); }

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Russell King23100.00%1100.00%
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u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock, unsigned int *actual_clock); void sdhci_set_clock(struct sdhci_host *host, unsigned int clock); void sdhci_enable_clk(struct sdhci_host *host, u16 clk); void sdhci_set_power(struct sdhci_host *host, unsigned char mode, unsigned short vdd); void sdhci_set_power_noreg(struct sdhci_host *host, unsigned char mode, unsigned short vdd); void sdhci_set_bus_width(struct sdhci_host *host, int width); void sdhci_reset(struct sdhci_host *host, u8 mask); void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing); int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios); void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable); #ifdef CONFIG_PM int sdhci_suspend_host(struct sdhci_host *host); int sdhci_resume_host(struct sdhci_host *host); void sdhci_enable_irq_wakeups(struct sdhci_host *host); int sdhci_runtime_suspend_host(struct sdhci_host *host); int sdhci_runtime_resume_host(struct sdhci_host *host); #endif void sdhci_cqe_enable(struct mmc_host *mmc); void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery); bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error, int *data_error); void sdhci_dumpregs(struct sdhci_host *host); #endif /* __SDHCI_HW_H */

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Anton Vorontsov60721.07%43.77%
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Ulf Hansson54418.88%32.83%
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Arindam Nath1565.41%65.66%
Russell King812.81%76.60%
Dong Aisheng712.46%54.72%
Philip Rakity692.40%65.66%
Kevin Liu441.53%10.94%
Hu Ziji401.39%32.83%
Zhangfei Gao331.15%32.83%
Ben Dooks260.90%10.94%
Daniel Drake210.73%10.94%
Haijun Zhang190.66%10.94%
Ludovic Desroches180.62%10.94%
Matt Fleming180.62%10.94%
Wolfram Sang130.45%10.94%
Masahiro Yamada130.45%21.89%
Ritesh Harjani120.42%10.94%
Christian Daudt120.42%10.94%
Vincent Yang120.42%10.94%
Mikko Vinni90.31%10.94%
Marek Szyprowski90.31%10.94%
Andrei Warkentin90.31%21.89%
Zach Brown80.28%10.94%
Haibo Chen70.24%10.94%
Aries Lee70.24%10.94%
Albert Herranz60.21%10.94%
Giuseppe Cavallaro60.21%10.94%
Kishon Vijay Abraham I50.17%10.94%
Suneel Garapati50.17%10.94%
Kyungmin Park40.14%10.94%
Srinivas Kandagatla40.14%10.94%
Michael Walle40.14%10.94%
Yi Sun40.14%10.94%
Richard Zhu40.14%10.94%
Stefan Wahren40.14%10.94%
Andrew Morton30.10%10.94%
Shawn Lin10.03%10.94%
Nico Pitre10.03%10.94%
Richard Röjfors10.03%10.94%
Jerry Huang10.03%10.94%
Total2881100.00%106100.00%
Directory: drivers/mmc/host
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