APIs for MMCSD

Introduction

This module contains APIs to program and use the MMCSD module. The APIs can be used by other drivers to get access to MMCSD and also by application to initiate data transfer operation.

Files
file	mmcsd/v0/mmcsd.h
	MMCSD Driver API/interface file.

Data Structures
struct	MMCSD_Params
	MMCSD instance attributes - used during init time. More...
struct	MMCSD_EmmcDeviceData
	eMMC device properties More...
struct	MMCSD_SdDeviceData
	SD device properties. More...
struct	MMCSD_Transaction
	MMCSD transaction. More...
struct	MMCSD_Attrs
	MMCSD instance attributes - used during init time. More...
struct	MMCSD_Object
	MMCSD driver object. More...
struct	MMCSD_Config

Functions
void	MMCSD_init (void)
	This function initializes the MMCSD module. More...
void	MMCSD_deinit (void)
	This function de-initializes the MMCSD module. More...
void	MMCSD_Params_init (MMCSD_Params *mmcsdParams)
	Initialize data structure with defaults. More...
MMCSD_Handle	MMCSD_open (uint32_t index, const MMCSD_Params *openParams)
	This function opens a given MMCSD peripheral. More...
void	MMCSD_close (MMCSD_Handle handle)
	Function to close a MMCSD peripheral specified by the MMCSD handle. More...
MMCSD_Handle	MMCSD_getHandle (uint32_t index)
	This function returns the handle of an open MMCSD Instance from the instance index. More...
int32_t	MMCSD_read (MMCSD_Handle handle, uint8_t *buf, uint32_t startBlk, uint32_t numBlks)
	Function to perform block reads from the MMC/SD media. More...
int32_t	MMCSD_write (MMCSD_Handle handle, uint8_t *buf, uint32_t startBlk, uint32_t numBlks)
	Function to perform block writes to the MMC/SD media. More...
uint32_t	MMCSD_getBlockSize (MMCSD_Handle handle)
	This function returns the block size of the MMC/SD media connected to the MMCSD controller. More...
uint32_t	MMCSD_getBlockCount (MMCSD_Handle handle)
	This function returns the block count of User Data Area of the MMC/SD media connected to the MMCSD controller. More...
uint32_t	MMCSD_isHC (MMCSD_Handle handle)
	This function returns if the media connected is High Capacity (> 2GB in size) or not. More...
int32_t	MMCSD_enableBootPartition (MMCSD_Handle handle, uint32_t partitionNum)
	This function enables the boot partition if the connected media is eMMC. More...
int32_t	MMCSD_disableBootPartition (MMCSD_Handle handle)
	This function disables the boot partition if the connected media is eMMC. More...

Typedefs
typedef void *	MMCSD_Handle

Macros
#define	MMCSD_CARD_TYPE_SD   (0U)
#define	MMCSD_CARD_TYPE_EMMC   (1U)
#define	MMCSD_CARD_TYPE_MMC   (2U)
#define	MMCSD_CARD_TYPE_NO_DEVICE   (3U)
#define	MMCSD_BUS_WIDTH_4BIT   (0x4U)
#define	MMCSD_BUS_WIDTH_8BIT   (0x8U)
#define	MMCSD_BUS_WIDTH_1BIT   (0x1U)
#define	MMCSD_TRANSPEED_25MBPS   (0x32U)
#define	MMCSD_TRANSPEED_50MBPS   (0x5AU)
#define	MMCSD_TRANSPEED_DEFAULT   (0x32U)
#define	MMCSD_TRANSPEED_HS   (0x5AU)
#define	MMCSD_TRANSPEED_SDR12   (0x32U)
#define	MMCSD_TRANSPEED_SDR25   (0x5AU)
#define	MMCSD_TRANSPEED_SDR50   (0xBU)
#define	MMCSD_TRANSPEED_SDR104   (0x2BU)
#define	MMCSD_TRANSPEED_DDR50   (0x3BU)
#define	MMCSD_TRANSPEED_HS200   (0x2BU)
#define	MMCSD_TRANSPEED_HS400   (0x4BU)
#define	MMCSD_BUS_VOLT_1_8V   (0x5U) /* Embedded */
#define	MMCSD_BUS_VOLT_3_0V   (0x6U) /* Typical */
#define	MMCSD_BUS_VOLT_3_3V   (0x7U) /* Flattop */
#define	MMCSD_CMD_TYPE_NORMAL   (0U)
#define	MMCSD_CMD_TYPE_BUS_SUSPEND   (1U)
#define	MMCSD_CMD_TYPE_FUNC_SEL   (2U)
#define	MMCSD_CMD_TYPE_IO_ABORT   (3U)
#define	MMCSD_CMD_RSP_TYPE_NORSP   (0U)
#define	MMCSD_CMD_RSP_TYPE_L136   (1U)
#define	MMCSD_CMD_RSP_TYPE_L48   (2U)
#define	MMCSD_CMD_RSP_TYPE_L48_BUSY   (3U)
#define	MMCSD_CMD_XFER_TYPE_WRITE   (0U)
#define	MMCSD_CMD_XFER_TYPE_READ   (1U)
#define	MMCSD_SUPPORT_MMC_DS   (0x01U) /* DS (Up to 26Mhz) */
#define	MMCSD_SUPPORT_MMC_HS_SDR   (0x02U) /* HS (Up to 52Mhz) */
#define	MMCSD_SUPPORT_MMC_HS_DDR   (0x04U) /* HS (Up to 52Mhz) */
#define	MMCSD_SUPPORT_MMC_HS200   (0x08U) /* HS200 (Up to 200Mhz) */
#define	MMCSD_SUPPORT_MMC_HS400   (0x10U) /* HS400 (Up to 400Mhz) */
#define	MMCSD_SUPPORT_MMC_HS400_ES   (0x20U) /* HS400 Enhanced Strobe (Up to 400Mhz) */
#define	MMCSD_SUPPORT_MMC_ALL   (0xFFU) /* All modes */
#define	MMCSD_SUPPORT_SD_DS   (0x01U)
#define	MMCSD_SUPPORT_SD_HS   (0x02U)
#define	MMCSD_SUPPORT_SD_SDR50   (0x04U)
#define	MMCSD_SUPPORT_SD_SDR104   (0x08U)
#define	MMCSD_SUPPORT_SD_DDR50   (0x10U)
#define	MMCSD_SUPPORT_SD_ALL   (0xFFU) /* All modes */
#define	MMCSD_PHY_TYPE_HW_PHY   (0U)
#define	MMCSD_PHY_TYPE_SW_PHY   (1U)
#define	MMCSD_PHY_TYPE_NO_PHY   (2U)
#define	MMCSD_PHY_TUNING_TYPE_AUTO   (0U)
#define	MMCSD_PHY_TUNING_TYPE_MANUAL   (1U)
#define	MMCSD_PHY_MODE_HS400   (1U)
#define	MMCSD_PHY_MODE_HS200   (2U)
#define	MMCSD_PHY_MODE_HSSDR50   (3U)
#define	MMCSD_PHY_MODE_HSDDR50   (4U)
#define	MMCSD_PHY_MODE_ENHANCED_STROBE   (5U)
#define	MMCSD_PHY_MODE_SDR104   (6U)
#define	MMCSD_PHY_MODE_SDR50   (7U)
#define	MMCSD_PHY_MODE_DDR50   (8U)
#define	MMCSD_PHY_MODE_SDR25   (9U)
#define	MMCSD_PHY_MODE_SDR12   (10U)
#define	MMCSD_PHY_MODE_HS   (11U)
#define	MMCSD_PHY_MODE_DS   (12U)
#define	MMCSD_UHS_MODE_SDR12   (0U)
#define	MMCSD_UHS_MODE_SDR25   (1U)
#define	MMCSD_UHS_MODE_SDR50   (2U)
#define	MMCSD_UHS_MODE_SDR104   (3U)
#define	MMCSD_UHS_MODE_DDR50   (4U)
#define	MMCSD_UHS_MODE_HS400   (5U)
#define	MMCSD_UHS_MODE_UHS2   (7U)

Macro Definition Documentation

MMCSD_CARD_TYPE_SD

#define MMCSD_CARD_TYPE_SD   (0U)

MMCSD_CARD_TYPE_EMMC

#define MMCSD_CARD_TYPE_EMMC   (1U)

MMCSD_CARD_TYPE_MMC

#define MMCSD_CARD_TYPE_MMC   (2U)

MMCSD_CARD_TYPE_NO_DEVICE

#define MMCSD_CARD_TYPE_NO_DEVICE   (3U)

MMCSD_BUS_WIDTH_4BIT

#define MMCSD_BUS_WIDTH_4BIT   (0x4U)

MMCSD_BUS_WIDTH_8BIT

#define MMCSD_BUS_WIDTH_8BIT   (0x8U)

MMCSD_BUS_WIDTH_1BIT

#define MMCSD_BUS_WIDTH_1BIT   (0x1U)

MMCSD_TRANSPEED_25MBPS

#define MMCSD_TRANSPEED_25MBPS   (0x32U)

MMCSD_TRANSPEED_50MBPS

#define MMCSD_TRANSPEED_50MBPS   (0x5AU)

MMCSD_TRANSPEED_DEFAULT

#define MMCSD_TRANSPEED_DEFAULT   (0x32U)

MMCSD_TRANSPEED_HS

#define MMCSD_TRANSPEED_HS   (0x5AU)

MMCSD_TRANSPEED_SDR12

#define MMCSD_TRANSPEED_SDR12   (0x32U)

MMCSD_TRANSPEED_SDR25

#define MMCSD_TRANSPEED_SDR25   (0x5AU)

MMCSD_TRANSPEED_SDR50

#define MMCSD_TRANSPEED_SDR50   (0xBU)

MMCSD_TRANSPEED_SDR104

#define MMCSD_TRANSPEED_SDR104   (0x2BU)

MMCSD_TRANSPEED_DDR50

#define MMCSD_TRANSPEED_DDR50   (0x3BU)

MMCSD_TRANSPEED_HS200

#define MMCSD_TRANSPEED_HS200   (0x2BU)

MMCSD_TRANSPEED_HS400

#define MMCSD_TRANSPEED_HS400   (0x4BU)

MMCSD_BUS_VOLT_1_8V

#define MMCSD_BUS_VOLT_1_8V   (0x5U) /* Embedded */

MMCSD_BUS_VOLT_3_0V

#define MMCSD_BUS_VOLT_3_0V   (0x6U) /* Typical */

MMCSD_BUS_VOLT_3_3V

#define MMCSD_BUS_VOLT_3_3V   (0x7U) /* Flattop */

MMCSD_CMD_TYPE_NORMAL

#define MMCSD_CMD_TYPE_NORMAL   (0U)

MMCSD_CMD_TYPE_BUS_SUSPEND

#define MMCSD_CMD_TYPE_BUS_SUSPEND   (1U)

MMCSD_CMD_TYPE_FUNC_SEL

#define MMCSD_CMD_TYPE_FUNC_SEL   (2U)

MMCSD_CMD_TYPE_IO_ABORT

#define MMCSD_CMD_TYPE_IO_ABORT   (3U)

MMCSD_CMD_RSP_TYPE_NORSP

#define MMCSD_CMD_RSP_TYPE_NORSP   (0U)

MMCSD_CMD_RSP_TYPE_L136

#define MMCSD_CMD_RSP_TYPE_L136   (1U)

MMCSD_CMD_RSP_TYPE_L48

#define MMCSD_CMD_RSP_TYPE_L48   (2U)

MMCSD_CMD_RSP_TYPE_L48_BUSY

#define MMCSD_CMD_RSP_TYPE_L48_BUSY   (3U)

MMCSD_CMD_XFER_TYPE_WRITE

#define MMCSD_CMD_XFER_TYPE_WRITE   (0U)

MMCSD_CMD_XFER_TYPE_READ

#define MMCSD_CMD_XFER_TYPE_READ   (1U)

MMCSD_SUPPORT_MMC_DS

#define MMCSD_SUPPORT_MMC_DS   (0x01U) /* DS (Up to 26Mhz) */

MMCSD_SUPPORT_MMC_HS_SDR

#define MMCSD_SUPPORT_MMC_HS_SDR   (0x02U) /* HS (Up to 52Mhz) */

MMCSD_SUPPORT_MMC_HS_DDR

#define MMCSD_SUPPORT_MMC_HS_DDR   (0x04U) /* HS (Up to 52Mhz) */

MMCSD_SUPPORT_MMC_HS200

#define MMCSD_SUPPORT_MMC_HS200   (0x08U) /* HS200 (Up to 200Mhz) */

MMCSD_SUPPORT_MMC_HS400

#define MMCSD_SUPPORT_MMC_HS400   (0x10U) /* HS400 (Up to 400Mhz) */

MMCSD_SUPPORT_MMC_HS400_ES

#define MMCSD_SUPPORT_MMC_HS400_ES   (0x20U) /* HS400 Enhanced Strobe (Up to 400Mhz) */

MMCSD_SUPPORT_MMC_ALL

#define MMCSD_SUPPORT_MMC_ALL   (0xFFU) /* All modes */

MMCSD_SUPPORT_SD_DS

#define MMCSD_SUPPORT_SD_DS   (0x01U)

MMCSD_SUPPORT_SD_HS

#define MMCSD_SUPPORT_SD_HS   (0x02U)

MMCSD_SUPPORT_SD_SDR50

#define MMCSD_SUPPORT_SD_SDR50   (0x04U)

MMCSD_SUPPORT_SD_SDR104

#define MMCSD_SUPPORT_SD_SDR104   (0x08U)

MMCSD_SUPPORT_SD_DDR50

#define MMCSD_SUPPORT_SD_DDR50   (0x10U)

MMCSD_SUPPORT_SD_ALL

#define MMCSD_SUPPORT_SD_ALL   (0xFFU) /* All modes */

MMCSD_PHY_TYPE_HW_PHY

#define MMCSD_PHY_TYPE_HW_PHY   (0U)

MMCSD_PHY_TYPE_SW_PHY

#define MMCSD_PHY_TYPE_SW_PHY   (1U)

MMCSD_PHY_TYPE_NO_PHY

#define MMCSD_PHY_TYPE_NO_PHY   (2U)

MMCSD_PHY_TUNING_TYPE_AUTO

#define MMCSD_PHY_TUNING_TYPE_AUTO   (0U)

MMCSD_PHY_TUNING_TYPE_MANUAL

#define MMCSD_PHY_TUNING_TYPE_MANUAL   (1U)

MMCSD_PHY_MODE_HS400

#define MMCSD_PHY_MODE_HS400   (1U)

MMCSD_PHY_MODE_HS200

#define MMCSD_PHY_MODE_HS200   (2U)

MMCSD_PHY_MODE_HSSDR50

#define MMCSD_PHY_MODE_HSSDR50   (3U)

MMCSD_PHY_MODE_HSDDR50

#define MMCSD_PHY_MODE_HSDDR50   (4U)

MMCSD_PHY_MODE_ENHANCED_STROBE

#define MMCSD_PHY_MODE_ENHANCED_STROBE   (5U)

MMCSD_PHY_MODE_SDR104

#define MMCSD_PHY_MODE_SDR104   (6U)

MMCSD_PHY_MODE_SDR50

#define MMCSD_PHY_MODE_SDR50   (7U)

MMCSD_PHY_MODE_DDR50

#define MMCSD_PHY_MODE_DDR50   (8U)

MMCSD_PHY_MODE_SDR25

#define MMCSD_PHY_MODE_SDR25   (9U)

MMCSD_PHY_MODE_SDR12

#define MMCSD_PHY_MODE_SDR12   (10U)

MMCSD_PHY_MODE_HS

#define MMCSD_PHY_MODE_HS   (11U)

MMCSD_PHY_MODE_DS

#define MMCSD_PHY_MODE_DS   (12U)

MMCSD_UHS_MODE_SDR12

#define MMCSD_UHS_MODE_SDR12   (0U)

MMCSD_UHS_MODE_SDR25

#define MMCSD_UHS_MODE_SDR25   (1U)

MMCSD_UHS_MODE_SDR50

#define MMCSD_UHS_MODE_SDR50   (2U)

MMCSD_UHS_MODE_SDR104

#define MMCSD_UHS_MODE_SDR104   (3U)

MMCSD_UHS_MODE_DDR50

#define MMCSD_UHS_MODE_DDR50   (4U)

MMCSD_UHS_MODE_HS400

#define MMCSD_UHS_MODE_HS400   (5U)

MMCSD_UHS_MODE_UHS2

#define MMCSD_UHS_MODE_UHS2   (7U)

Typedef Documentation

MMCSD_Handle

typedef void* MMCSD_Handle

Function Documentation

MMCSD_init()

void MMCSD_init

(

void

)

This function initializes the MMCSD module.

MMCSD_deinit()

void MMCSD_deinit

(

void

)

This function de-initializes the MMCSD module.

MMCSD_Params_init()

void MMCSD_Params_init

(

MMCSD_Params *

mmcsdParams

)

Initialize data structure with defaults.

Parameters

mmcsdParams

[out] Initialized parameters

MMCSD_open()

MMCSD_Handle MMCSD_open	(	uint32_t	index,
		const MMCSD_Params *	openParams
	)

This function opens a given MMCSD peripheral.

Precondition

MMCSD controller has been initialized using MMCSD_init()

Parameters

index	Index of config to use in the MMCSD_Config array
openParams	Pointer to parameters to open the driver with

Returns

A MMCSD_Handle on success or a NULL on an error or if it has been opened already

See also

MMCSD_init()

MMCSD_close()

MMCSD_close()

void MMCSD_close

(

MMCSD_Handle

handle

)

Function to close a MMCSD peripheral specified by the MMCSD handle.

Precondition

MMCSD_open() has to be called first

Parameters

handle

MMCSD_Handle returned from MMCSD_open()

See also

MMCSD_open()

MMCSD_getHandle()

MMCSD_Handle MMCSD_getHandle

(

uint32_t

index

)

This function returns the handle of an open MMCSD Instance from the instance index.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

index

Index of config to use in the MMCSD_Config array

Returns

An MMCSD_Handle if it has been opened already or NULL otherwise

See also

MMCSD_init()

MMCSD_open()

MMCSD_read()

int32_t MMCSD_read	(	MMCSD_Handle	handle,
		uint8_t *	buf,
		uint32_t	startBlk,
		uint32_t	numBlks
	)

Function to perform block reads from the MMC/SD media.

Parameters

handle	MMCSD_Handle returned from MMCSD_open()
buf	Pointer to a buffer to which the data is to be read into
startBlk	Block to start reading data from
numBlks	Number of blocks to read

Returns

SystemP_SUCCESS on successful read; else error on failure

See also

MMCSD_open

MMCSD_write()

int32_t MMCSD_write	(	MMCSD_Handle	handle,
		uint8_t *	buf,
		uint32_t	startBlk,
		uint32_t	numBlks
	)

Function to perform block writes to the MMC/SD media.

Parameters

handle	MMCSD_Handle returned from MMCSD_open()
buf	Pointer to a buffer to which the data is to be read into
startBlk	Block to start reading data from
numBlks	Number of blocks to read

Returns

SystemP_SUCCESS on successful read; else error on failure

See also

MMCSD_open

MMCSD_getBlockSize()

uint32_t MMCSD_getBlockSize

(

MMCSD_Handle

handle

)

This function returns the block size of the MMC/SD media connected to the MMCSD controller.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

handle

MMCSD_Handle returned from MMCSD_open()

Returns

Block size of the media

See also

MMCSD_init()

MMCSD_open()

MMCSD_getBlockCount()

uint32_t MMCSD_getBlockCount

(

MMCSD_Handle

handle

)

This function returns the block count of User Data Area of the MMC/SD media connected to the MMCSD controller.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

handle

MMCSD_Handle returned from MMCSD_open()

Returns

Block size of the media

See also

MMCSD_init()

MMCSD_open()

MMCSD_isHC()

uint32_t MMCSD_isHC

(

MMCSD_Handle

handle

)

This function returns if the media connected is High Capacity (> 2GB in size) or not.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

handle

MMCSD_Handle returned from MMCSD_open()

Returns

Block size of the media

See also

MMCSD_init()

MMCSD_open()

MMCSD_enableBootPartition()

int32_t MMCSD_enableBootPartition	(	MMCSD_Handle	handle,
		uint32_t	partitionNum
	)

This function enables the boot partition if the connected media is eMMC.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

handle	MMCSD_Handle returned from MMCSD_open()
partitionNum	Boot partition to be enabled.

Returns

SystemP_SUCCESS on successful read; else error on failure

See also

MMCSD_init()

MMCSD_open()

MMCSD_disableBootPartition()

int32_t MMCSD_disableBootPartition

(

MMCSD_Handle

handle

)

This function disables the boot partition if the connected media is eMMC.

Precondition

MMCSD controller has been opened using MMCSD_open()

Parameters

handle

MMCSD_Handle returned from MMCSD_open()

Returns

SystemP_SUCCESS on successful read; else error on failure

See also

MMCSD_init()

MMCSD_open()

Variable Documentation

gMmcsdConfig

MMCSD_Config gMmcsdConfig[]

extern

Externally defined driver configuration array.

gMmcsdConfigNum

uint32_t gMmcsdConfigNum

extern

Externally defined driver configuration array size.