include/linux/mmc/mmc.h - kernel/msm-4.9 - Gitiles

 /*
  * Header for MultiMediaCard (MMC)
  *
  * Copyright 2002 Hewlett-Packard Company
  *
  * Use consistent with the GNU GPL is permitted,
  * provided that this copyright notice is
  * preserved in its entirety in all copies and derived works.
  *
  * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
  * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
  * FITNESS FOR ANY PARTICULAR PURPOSE.
  *
  * Many thanks to Alessandro Rubini and Jonathan Corbet!
  *
  * Based strongly on code by:
  *
  * Author: Yong-iL Joh <tolkien@mizi.com>
  *
  * Author:  Andrew Christian
  *          15 May 2002
  */

 #ifndef LINUX_MMC_MMC_H
 #define LINUX_MMC_MMC_H

 /* Standard MMC commands (4.1)           type  argument     response */
    /* class 1 */
 #define MMC_GO_IDLE_STATE         0   /* bc                          */
 #define MMC_SEND_OP_COND          1   /* bcr  [31:0] OCR         R3  */
 #define MMC_ALL_SEND_CID          2   /* bcr                     R2  */
 #define MMC_SET_RELATIVE_ADDR     3   /* ac   [31:16] RCA        R1  */
 #define MMC_SET_DSR               4   /* bc   [31:16] RCA            */
 #define MMC_SLEEP_AWAKE		  5   /* ac   [31:16] RCA 15:flg R1b */
 #define MMC_SWITCH                6   /* ac   [31:0] See below   R1b */
 #define MMC_SELECT_CARD           7   /* ac   [31:16] RCA        R1  */
 #define MMC_SEND_EXT_CSD          8   /* adtc                    R1  */
 #define MMC_SEND_CSD              9   /* ac   [31:16] RCA        R2  */
 #define MMC_SEND_CID             10   /* ac   [31:16] RCA        R2  */
 #define MMC_READ_DAT_UNTIL_STOP  11   /* adtc [31:0] dadr        R1  */
 #define MMC_STOP_TRANSMISSION    12   /* ac                      R1b */
 #define MMC_SEND_STATUS          13   /* ac   [31:16] RCA        R1  */
 #define MMC_BUS_TEST_R           14   /* adtc                    R1  */
 #define MMC_GO_INACTIVE_STATE    15   /* ac   [31:16] RCA            */
 #define MMC_BUS_TEST_W           19   /* adtc                    R1  */
 #define MMC_SPI_READ_OCR         58   /* spi                  spi_R3 */
 #define MMC_SPI_CRC_ON_OFF       59   /* spi  [0:0] flag      spi_R1 */

   /* class 2 */
 #define MMC_SET_BLOCKLEN         16   /* ac   [31:0] block len   R1  */
 #define MMC_READ_SINGLE_BLOCK    17   /* adtc [31:0] data addr   R1  */
 #define MMC_READ_MULTIPLE_BLOCK  18   /* adtc [31:0] data addr   R1  */
 #define MMC_SEND_TUNING_BLOCK    19   /* adtc                    R1  */

   /* class 3 */
 #define MMC_WRITE_DAT_UNTIL_STOP 20   /* adtc [31:0] data addr   R1  */

   /* class 4 */
 #define MMC_SET_BLOCK_COUNT      23   /* adtc [31:0] data addr   R1  */
 #define MMC_WRITE_BLOCK          24   /* adtc [31:0] data addr   R1  */
 #define MMC_WRITE_MULTIPLE_BLOCK 25   /* adtc                    R1  */
 #define MMC_PROGRAM_CID          26   /* adtc                    R1  */
 #define MMC_PROGRAM_CSD          27   /* adtc                    R1  */

   /* class 6 */
 #define MMC_SET_WRITE_PROT       28   /* ac   [31:0] data addr   R1b */
 #define MMC_CLR_WRITE_PROT       29   /* ac   [31:0] data addr   R1b */
 #define MMC_SEND_WRITE_PROT      30   /* adtc [31:0] wpdata addr R1  */

   /* class 5 */
 #define MMC_ERASE_GROUP_START    35   /* ac   [31:0] data addr   R1  */
 #define MMC_ERASE_GROUP_END      36   /* ac   [31:0] data addr   R1  */
 #define MMC_ERASE                38   /* ac                      R1b */

   /* class 9 */
 #define MMC_FAST_IO              39   /* ac   <Complex>          R4  */
 #define MMC_GO_IRQ_STATE         40   /* bcr                     R5  */

   /* class 7 */
 #define MMC_LOCK_UNLOCK          42   /* adtc                    R1b */

   /* class 8 */
 #define MMC_APP_CMD              55   /* ac   [31:16] RCA        R1  */
 #define MMC_GEN_CMD              56   /* adtc [0] RD/WR          R1  */

 static inline bool mmc_op_multi(u32 opcode)
 {
 	return opcode == MMC_WRITE_MULTIPLE_BLOCK ||
 	       opcode == MMC_READ_MULTIPLE_BLOCK;
 }

 /*
  * MMC_SWITCH argument format:
  *
  *	[31:26] Always 0
  *	[25:24] Access Mode
  *	[23:16] Location of target Byte in EXT_CSD
  *	[15:08] Value Byte
  *	[07:03] Always 0
  *	[02:00] Command Set
  */

 /*
   MMC status in R1, for native mode (SPI bits are different)
   Type
 	e : error bit
 	s : status bit
 	r : detected and set for the actual command response
 	x : detected and set during command execution. the host must poll
             the card by sending status command in order to read these bits.
   Clear condition
 	a : according to the card state
 	b : always related to the previous command. Reception of
             a valid command will clear it (with a delay of one command)
 	c : clear by read
  */

 #define R1_OUT_OF_RANGE		(1 << 31)	/* er, c */
 #define R1_ADDRESS_ERROR	(1 << 30)	/* erx, c */
 #define R1_BLOCK_LEN_ERROR	(1 << 29)	/* er, c */
 #define R1_ERASE_SEQ_ERROR      (1 << 28)	/* er, c */
 #define R1_ERASE_PARAM		(1 << 27)	/* ex, c */
 #define R1_WP_VIOLATION		(1 << 26)	/* erx, c */
 #define R1_CARD_IS_LOCKED	(1 << 25)	/* sx, a */
 #define R1_LOCK_UNLOCK_FAILED	(1 << 24)	/* erx, c */
 #define R1_COM_CRC_ERROR	(1 << 23)	/* er, b */
 #define R1_ILLEGAL_COMMAND	(1 << 22)	/* er, b */
 #define R1_CARD_ECC_FAILED	(1 << 21)	/* ex, c */
 #define R1_CC_ERROR		(1 << 20)	/* erx, c */
 #define R1_ERROR		(1 << 19)	/* erx, c */
 #define R1_UNDERRUN		(1 << 18)	/* ex, c */
 #define R1_OVERRUN		(1 << 17)	/* ex, c */
 #define R1_CID_CSD_OVERWRITE	(1 << 16)	/* erx, c, CID/CSD overwrite */
 #define R1_WP_ERASE_SKIP	(1 << 15)	/* sx, c */
 #define R1_CARD_ECC_DISABLED	(1 << 14)	/* sx, a */
 #define R1_ERASE_RESET		(1 << 13)	/* sr, c */
 #define R1_STATUS(x)            (x & 0xFFFFE000)
 #define R1_CURRENT_STATE(x)	((x & 0x00001E00) >> 9)	/* sx, b (4 bits) */
 #define R1_READY_FOR_DATA	(1 << 8)	/* sx, a */
 #define R1_SWITCH_ERROR		(1 << 7)	/* sx, c */
 #define R1_APP_CMD		(1 << 5)	/* sr, c */

 #define R1_STATE_IDLE	0
 #define R1_STATE_READY	1
 #define R1_STATE_IDENT	2
 #define R1_STATE_STBY	3
 #define R1_STATE_TRAN	4
 #define R1_STATE_DATA	5
 #define R1_STATE_RCV	6
 #define R1_STATE_PRG	7
 #define R1_STATE_DIS	8

 /*
  * MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS
  * R1 is the low order byte; R2 is the next highest byte, when present.
  */
 #define R1_SPI_IDLE		(1 << 0)
 #define R1_SPI_ERASE_RESET	(1 << 1)
 #define R1_SPI_ILLEGAL_COMMAND	(1 << 2)
 #define R1_SPI_COM_CRC		(1 << 3)
 #define R1_SPI_ERASE_SEQ	(1 << 4)
 #define R1_SPI_ADDRESS		(1 << 5)
 #define R1_SPI_PARAMETER	(1 << 6)
 /* R1 bit 7 is always zero */
 #define R2_SPI_CARD_LOCKED	(1 << 8)
 #define R2_SPI_WP_ERASE_SKIP	(1 << 9)	/* or lock/unlock fail */
 #define R2_SPI_LOCK_UNLOCK_FAIL	R2_SPI_WP_ERASE_SKIP
 #define R2_SPI_ERROR		(1 << 10)
 #define R2_SPI_CC_ERROR		(1 << 11)
 #define R2_SPI_CARD_ECC_ERROR	(1 << 12)
 #define R2_SPI_WP_VIOLATION	(1 << 13)
 #define R2_SPI_ERASE_PARAM	(1 << 14)
 #define R2_SPI_OUT_OF_RANGE	(1 << 15)	/* or CSD overwrite */
 #define R2_SPI_CSD_OVERWRITE	R2_SPI_OUT_OF_RANGE

 /* These are unpacked versions of the actual responses */

 struct _mmc_csd {
 	u8  csd_structure;
 	u8  spec_vers;
 	u8  taac;
 	u8  nsac;
 	u8  tran_speed;
 	u16 ccc;
 	u8  read_bl_len;
 	u8  read_bl_partial;
 	u8  write_blk_misalign;
 	u8  read_blk_misalign;
 	u8  dsr_imp;
 	u16 c_size;
 	u8  vdd_r_curr_min;
 	u8  vdd_r_curr_max;
 	u8  vdd_w_curr_min;
 	u8  vdd_w_curr_max;
 	u8  c_size_mult;
 	union {
 		struct { /* MMC system specification version 3.1 */
 			u8  erase_grp_size;
 			u8  erase_grp_mult;
 		} v31;
 		struct { /* MMC system specification version 2.2 */
 			u8  sector_size;
 			u8  erase_grp_size;
 		} v22;
 	} erase;
 	u8  wp_grp_size;
 	u8  wp_grp_enable;
 	u8  default_ecc;
 	u8  r2w_factor;
 	u8  write_bl_len;
 	u8  write_bl_partial;
 	u8  file_format_grp;
 	u8  copy;
 	u8  perm_write_protect;
 	u8  tmp_write_protect;
 	u8  file_format;
 	u8  ecc;
 };

 /*
  * OCR bits are mostly in host.h
  */
 #define MMC_CARD_BUSY	0x80000000	/* Card Power up status bit */

 /*
  * Card Command Classes (CCC)
  */
 #define CCC_BASIC		(1<<0)	/* (0) Basic protocol functions */
 					/* (CMD0,1,2,3,4,7,9,10,12,13,15) */
 					/* (and for SPI, CMD58,59) */
 #define CCC_STREAM_READ		(1<<1)	/* (1) Stream read commands */
 					/* (CMD11) */
 #define CCC_BLOCK_READ		(1<<2)	/* (2) Block read commands */
 					/* (CMD16,17,18) */
 #define CCC_STREAM_WRITE	(1<<3)	/* (3) Stream write commands */
 					/* (CMD20) */
 #define CCC_BLOCK_WRITE		(1<<4)	/* (4) Block write commands */
 					/* (CMD16,24,25,26,27) */
 #define CCC_ERASE		(1<<5)	/* (5) Ability to erase blocks */
 					/* (CMD32,33,34,35,36,37,38,39) */
 #define CCC_WRITE_PROT		(1<<6)	/* (6) Able to write protect blocks */
 					/* (CMD28,29,30) */
 #define CCC_LOCK_CARD		(1<<7)	/* (7) Able to lock down card */
 					/* (CMD16,CMD42) */
 #define CCC_APP_SPEC		(1<<8)	/* (8) Application specific */
 					/* (CMD55,56,57,ACMD*) */
 #define CCC_IO_MODE		(1<<9)	/* (9) I/O mode */
 					/* (CMD5,39,40,52,53) */
 #define CCC_SWITCH		(1<<10)	/* (10) High speed switch */
 					/* (CMD6,34,35,36,37,50) */
 					/* (11) Reserved */
 					/* (CMD?) */

 /*
  * CSD field definitions
  */

 #define CSD_STRUCT_VER_1_0  0           /* Valid for system specification 1.0 - 1.2 */
 #define CSD_STRUCT_VER_1_1  1           /* Valid for system specification 1.4 - 2.2 */
 #define CSD_STRUCT_VER_1_2  2           /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */
 #define CSD_STRUCT_EXT_CSD  3           /* Version is coded in CSD_STRUCTURE in EXT_CSD */

 #define CSD_SPEC_VER_0      0           /* Implements system specification 1.0 - 1.2 */
 #define CSD_SPEC_VER_1      1           /* Implements system specification 1.4 */
 #define CSD_SPEC_VER_2      2           /* Implements system specification 2.0 - 2.2 */
 #define CSD_SPEC_VER_3      3           /* Implements system specification 3.1 - 3.2 - 3.31 */
 #define CSD_SPEC_VER_4      4           /* Implements system specification 4.0 - 4.1 */

 /*
  * EXT_CSD fields
  */

 #define EXT_CSD_POWER_OFF_NOTIFICATION	34	/* R/W */
 #define EXT_CSD_GP_SIZE_MULT		143	/* R/W */
 #define EXT_CSD_PARTITION_ATTRIBUTE	156	/* R/W */
 #define EXT_CSD_PARTITION_SUPPORT	160	/* RO */
 #define EXT_CSD_RST_N_FUNCTION		162	/* R/W */
 #define EXT_CSD_SANITIZE_START		165     /* W */
 #define EXT_CSD_WR_REL_PARAM		166	/* RO */
 #define EXT_CSD_ERASE_GROUP_DEF		175	/* R/W */
 #define EXT_CSD_PART_CONFIG		179	/* R/W */
 #define EXT_CSD_ERASED_MEM_CONT		181	/* RO */
 #define EXT_CSD_BUS_WIDTH		183	/* R/W */
 #define EXT_CSD_HS_TIMING		185	/* R/W */
 #define EXT_CSD_POWER_CLASS		187	/* R/W */
 #define EXT_CSD_REV			192	/* RO */
 #define EXT_CSD_STRUCTURE		194	/* RO */
 #define EXT_CSD_CARD_TYPE		196	/* RO */
 #define EXT_CSD_PART_SWITCH_TIME        199     /* RO */
 #define EXT_CSD_PWR_CL_52_195		200	/* RO */
 #define EXT_CSD_PWR_CL_26_195		201	/* RO */
 #define EXT_CSD_PWR_CL_52_360		202	/* RO */
 #define EXT_CSD_PWR_CL_26_360		203	/* RO */
 #define EXT_CSD_SEC_CNT			212	/* RO, 4 bytes */
 #define EXT_CSD_S_A_TIMEOUT		217	/* RO */
 #define EXT_CSD_REL_WR_SEC_C		222	/* RO */
 #define EXT_CSD_HC_WP_GRP_SIZE		221	/* RO */
 #define EXT_CSD_ERASE_TIMEOUT_MULT	223	/* RO */
 #define EXT_CSD_HC_ERASE_GRP_SIZE	224	/* RO */
 #define EXT_CSD_BOOT_MULT		226	/* RO */
 #define EXT_CSD_SEC_TRIM_MULT		229	/* RO */
 #define EXT_CSD_SEC_ERASE_MULT		230	/* RO */
 #define EXT_CSD_SEC_FEATURE_SUPPORT	231	/* RO */
 #define EXT_CSD_TRIM_MULT		232	/* RO */
 #define EXT_CSD_PWR_CL_200_195		236	/* RO */
 #define EXT_CSD_PWR_CL_200_360		237	/* RO */
 #define EXT_CSD_PWR_CL_DDR_52_195	238	/* RO */
 #define EXT_CSD_PWR_CL_DDR_52_360	239	/* RO */
 #define EXT_CSD_POWER_OFF_LONG_TIME	247	/* RO */
 #define EXT_CSD_GENERIC_CMD6_TIME	248	/* RO */

 /*
  * EXT_CSD field definitions
  */

 #define EXT_CSD_WR_REL_PARAM_EN		(1<<2)

 #define EXT_CSD_PART_CONFIG_ACC_MASK	(0x7)
 #define EXT_CSD_PART_CONFIG_ACC_BOOT0	(0x1)
 #define EXT_CSD_PART_CONFIG_ACC_GP0	(0x4)

 #define EXT_CSD_PART_SUPPORT_PART_EN	(0x1)

 #define EXT_CSD_CMD_SET_NORMAL		(1<<0)
 #define EXT_CSD_CMD_SET_SECURE		(1<<1)
 #define EXT_CSD_CMD_SET_CPSECURE	(1<<2)

 #define EXT_CSD_CARD_TYPE_26	(1<<0)	/* Card can run at 26MHz */
 #define EXT_CSD_CARD_TYPE_52	(1<<1)	/* Card can run at 52MHz */
 #define EXT_CSD_CARD_TYPE_MASK	0xF	/* Mask out reserved bits */
 #define EXT_CSD_CARD_TYPE_DDR_1_8V  (1<<2)   /* Card can run at 52MHz */
 					     /* DDR mode @1.8V or 3V I/O */
 #define EXT_CSD_CARD_TYPE_DDR_1_2V  (1<<3)   /* Card can run at 52MHz */
 					     /* DDR mode @1.2V I/O */
 #define EXT_CSD_CARD_TYPE_DDR_52       (EXT_CSD_CARD_TYPE_DDR_1_8V  \
 					| EXT_CSD_CARD_TYPE_DDR_1_2V)

 #define EXT_CSD_BUS_WIDTH_1	0	/* Card is in 1 bit mode */
 #define EXT_CSD_BUS_WIDTH_4	1	/* Card is in 4 bit mode */
 #define EXT_CSD_BUS_WIDTH_8	2	/* Card is in 8 bit mode */
 #define EXT_CSD_DDR_BUS_WIDTH_4	5	/* Card is in 4 bit DDR mode */
 #define EXT_CSD_DDR_BUS_WIDTH_8	6	/* Card is in 8 bit DDR mode */

 #define EXT_CSD_SEC_ER_EN	BIT(0)
 #define EXT_CSD_SEC_BD_BLK_EN	BIT(2)
 #define EXT_CSD_SEC_GB_CL_EN	BIT(4)
 #define EXT_CSD_SEC_SANITIZE	BIT(6)  /* v4.5 only */

 #define EXT_CSD_RST_N_EN_MASK	0x3
 #define EXT_CSD_RST_N_ENABLED	1	/* RST_n is enabled on card */

 #define EXT_CSD_NO_POWER_NOTIFICATION	0
 #define EXT_CSD_POWER_ON		1
 #define EXT_CSD_POWER_OFF_SHORT		2
 #define EXT_CSD_POWER_OFF_LONG		3

 #define EXT_CSD_PWR_CL_8BIT_MASK	0xF0	/* 8 bit PWR CLS */
 #define EXT_CSD_PWR_CL_4BIT_MASK	0x0F	/* 8 bit PWR CLS */
 #define EXT_CSD_PWR_CL_8BIT_SHIFT	4
 #define EXT_CSD_PWR_CL_4BIT_SHIFT	0
 /*
  * MMC_SWITCH access modes
  */

 #define MMC_SWITCH_MODE_CMD_SET		0x00	/* Change the command set */
 #define MMC_SWITCH_MODE_SET_BITS	0x01	/* Set bits which are 1 in value */
 #define MMC_SWITCH_MODE_CLEAR_BITS	0x02	/* Clear bits which are 1 in value */
 #define MMC_SWITCH_MODE_WRITE_BYTE	0x03	/* Set target to value */

 #endif /* LINUX_MMC_MMC_H */
	/*
	* Header for MultiMediaCard (MMC)
	*
	* Copyright 2002 Hewlett-Packard Company
	*
	* Use consistent with the GNU GPL is permitted,
	* provided that this copyright notice is
	* preserved in its entirety in all copies and derived works.
	*
	* HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
	* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
	* FITNESS FOR ANY PARTICULAR PURPOSE.
	*
	* Many thanks to Alessandro Rubini and Jonathan Corbet!
	*
	* Based strongly on code by:
	*
	* Author: Yong-iL Joh <tolkien@mizi.com>
	*
	* Author: Andrew Christian
	* 15 May 2002
	*/

	#ifndef LINUX_MMC_MMC_H
	#define LINUX_MMC_MMC_H

	/* Standard MMC commands (4.1) type argument response */
	/* class 1 */
	#define MMC_GO_IDLE_STATE 0 /* bc */
	#define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
	#define MMC_ALL_SEND_CID 2 /* bcr R2 */
	#define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
	#define MMC_SET_DSR 4 /* bc [31:16] RCA */
	#define MMC_SLEEP_AWAKE 5 /* ac [31:16] RCA 15:flg R1b */
	#define MMC_SWITCH 6 /* ac [31:0] See below R1b */
	#define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
	#define MMC_SEND_EXT_CSD 8 /* adtc R1 */
	#define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
	#define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
	#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
	#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
	#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
	#define MMC_BUS_TEST_R 14 /* adtc R1 */
	#define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
	#define MMC_BUS_TEST_W 19 /* adtc R1 */
	#define MMC_SPI_READ_OCR 58 /* spi spi_R3 */
	#define MMC_SPI_CRC_ON_OFF 59 /* spi [0:0] flag spi_R1 */

	/* class 2 */
	#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
	#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
	#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
	#define MMC_SEND_TUNING_BLOCK 19 /* adtc R1 */

	/* class 3 */
	#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */

	/* class 4 */
	#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
	#define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
	#define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
	#define MMC_PROGRAM_CID 26 /* adtc R1 */
	#define MMC_PROGRAM_CSD 27 /* adtc R1 */

	/* class 6 */
	#define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
	#define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
	#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */

	/* class 5 */
	#define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
	#define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
	#define MMC_ERASE 38 /* ac R1b */

	/* class 9 */
	#define MMC_FAST_IO 39 /* ac <Complex> R4 */
	#define MMC_GO_IRQ_STATE 40 /* bcr R5 */

	/* class 7 */
	#define MMC_LOCK_UNLOCK 42 /* adtc R1b */

	/* class 8 */
	#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
	#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */

	static inline bool mmc_op_multi(u32 opcode)
	{
	return opcode == MMC_WRITE_MULTIPLE_BLOCK \|\|
	opcode == MMC_READ_MULTIPLE_BLOCK;
	}

	/*
	* MMC_SWITCH argument format:
	*
	* [31:26] Always 0
	* [25:24] Access Mode
	* [23:16] Location of target Byte in EXT_CSD
	* [15:08] Value Byte
	* [07:03] Always 0
	* [02:00] Command Set
	*/

	/*
	MMC status in R1, for native mode (SPI bits are different)
	Type
	e : error bit
	s : status bit
	r : detected and set for the actual command response
	x : detected and set during command execution. the host must poll
	the card by sending status command in order to read these bits.
	Clear condition
	a : according to the card state
	b : always related to the previous command. Reception of
	a valid command will clear it (with a delay of one command)
	c : clear by read
	*/

	#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
	#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
	#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
	#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
	#define R1_ERASE_PARAM (1 << 27) /* ex, c */
	#define R1_WP_VIOLATION (1 << 26) /* erx, c */
	#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
	#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
	#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
	#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
	#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
	#define R1_CC_ERROR (1 << 20) /* erx, c */
	#define R1_ERROR (1 << 19) /* erx, c */
	#define R1_UNDERRUN (1 << 18) /* ex, c */
	#define R1_OVERRUN (1 << 17) /* ex, c */
	#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
	#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
	#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
	#define R1_ERASE_RESET (1 << 13) /* sr, c */
	#define R1_STATUS(x) (x & 0xFFFFE000)
	#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
	#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
	#define R1_SWITCH_ERROR (1 << 7) /* sx, c */
	#define R1_APP_CMD (1 << 5) /* sr, c */

	#define R1_STATE_IDLE 0
	#define R1_STATE_READY 1
	#define R1_STATE_IDENT 2
	#define R1_STATE_STBY 3
	#define R1_STATE_TRAN 4
	#define R1_STATE_DATA 5
	#define R1_STATE_RCV 6
	#define R1_STATE_PRG 7
	#define R1_STATE_DIS 8

	/*
	* MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS
	* R1 is the low order byte; R2 is the next highest byte, when present.
	*/
	#define R1_SPI_IDLE (1 << 0)
	#define R1_SPI_ERASE_RESET (1 << 1)
	#define R1_SPI_ILLEGAL_COMMAND (1 << 2)
	#define R1_SPI_COM_CRC (1 << 3)
	#define R1_SPI_ERASE_SEQ (1 << 4)
	#define R1_SPI_ADDRESS (1 << 5)
	#define R1_SPI_PARAMETER (1 << 6)
	/* R1 bit 7 is always zero */
	#define R2_SPI_CARD_LOCKED (1 << 8)
	#define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
	#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
	#define R2_SPI_ERROR (1 << 10)
	#define R2_SPI_CC_ERROR (1 << 11)
	#define R2_SPI_CARD_ECC_ERROR (1 << 12)
	#define R2_SPI_WP_VIOLATION (1 << 13)
	#define R2_SPI_ERASE_PARAM (1 << 14)
	#define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
	#define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE

	/* These are unpacked versions of the actual responses */

	struct _mmc_csd {
	u8 csd_structure;
	u8 spec_vers;
	u8 taac;
	u8 nsac;
	u8 tran_speed;
	u16 ccc;
	u8 read_bl_len;
	u8 read_bl_partial;
	u8 write_blk_misalign;
	u8 read_blk_misalign;
	u8 dsr_imp;
	u16 c_size;
	u8 vdd_r_curr_min;
	u8 vdd_r_curr_max;
	u8 vdd_w_curr_min;
	u8 vdd_w_curr_max;
	u8 c_size_mult;
	union {
	struct { /* MMC system specification version 3.1 */
	u8 erase_grp_size;
	u8 erase_grp_mult;
	} v31;
	struct { /* MMC system specification version 2.2 */
	u8 sector_size;
	u8 erase_grp_size;
	} v22;
	} erase;
	u8 wp_grp_size;
	u8 wp_grp_enable;
	u8 default_ecc;
	u8 r2w_factor;
	u8 write_bl_len;
	u8 write_bl_partial;
	u8 file_format_grp;
	u8 copy;
	u8 perm_write_protect;
	u8 tmp_write_protect;
	u8 file_format;
	u8 ecc;
	};

	/*
	* OCR bits are mostly in host.h
	*/
	#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */

	/*
	* Card Command Classes (CCC)
	*/
	#define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
	/* (CMD0,1,2,3,4,7,9,10,12,13,15) */
	/* (and for SPI, CMD58,59) */
	#define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
	/* (CMD11) */
	#define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
	/* (CMD16,17,18) */
	#define CCC_STREAM_WRITE (1<<3) /* (3) Stream write commands */
	/* (CMD20) */
	#define CCC_BLOCK_WRITE (1<<4) /* (4) Block write commands */
	/* (CMD16,24,25,26,27) */
	#define CCC_ERASE (1<<5) /* (5) Ability to erase blocks */
	/* (CMD32,33,34,35,36,37,38,39) */
	#define CCC_WRITE_PROT (1<<6) /* (6) Able to write protect blocks */
	/* (CMD28,29,30) */
	#define CCC_LOCK_CARD (1<<7) /* (7) Able to lock down card */
	/* (CMD16,CMD42) */
	#define CCC_APP_SPEC (1<<8) /* (8) Application specific */
	/* (CMD55,56,57,ACMD) /
	#define CCC_IO_MODE (1<<9) /* (9) I/O mode */
	/* (CMD5,39,40,52,53) */
	#define CCC_SWITCH (1<<10) /* (10) High speed switch */
	/* (CMD6,34,35,36,37,50) */
	/* (11) Reserved */
	/* (CMD?) */

	/*
	* CSD field definitions
	*/

	#define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
	#define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
	#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */
	#define CSD_STRUCT_EXT_CSD 3 /* Version is coded in CSD_STRUCTURE in EXT_CSD */

	#define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
	#define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
	#define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
	#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 - 3.2 - 3.31 */
	#define CSD_SPEC_VER_4 4 /* Implements system specification 4.0 - 4.1 */

	/*
	* EXT_CSD fields
	*/

	#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
	#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
	#define EXT_CSD_PARTITION_ATTRIBUTE 156 /* R/W */
	#define EXT_CSD_PARTITION_SUPPORT 160 /* RO */
	#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
	#define EXT_CSD_SANITIZE_START 165 /* W */
	#define EXT_CSD_WR_REL_PARAM 166 /* RO */
	#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
	#define EXT_CSD_PART_CONFIG 179 /* R/W */
	#define EXT_CSD_ERASED_MEM_CONT 181 /* RO */
	#define EXT_CSD_BUS_WIDTH 183 /* R/W */
	#define EXT_CSD_HS_TIMING 185 /* R/W */
	#define EXT_CSD_POWER_CLASS 187 /* R/W */
	#define EXT_CSD_REV 192 /* RO */
	#define EXT_CSD_STRUCTURE 194 /* RO */
	#define EXT_CSD_CARD_TYPE 196 /* RO */
	#define EXT_CSD_PART_SWITCH_TIME 199 /* RO */
	#define EXT_CSD_PWR_CL_52_195 200 /* RO */
	#define EXT_CSD_PWR_CL_26_195 201 /* RO */
	#define EXT_CSD_PWR_CL_52_360 202 /* RO */
	#define EXT_CSD_PWR_CL_26_360 203 /* RO */
	#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
	#define EXT_CSD_S_A_TIMEOUT 217 /* RO */
	#define EXT_CSD_REL_WR_SEC_C 222 /* RO */
	#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
	#define EXT_CSD_ERASE_TIMEOUT_MULT 223 /* RO */
	#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
	#define EXT_CSD_BOOT_MULT 226 /* RO */
	#define EXT_CSD_SEC_TRIM_MULT 229 /* RO */
	#define EXT_CSD_SEC_ERASE_MULT 230 /* RO */
	#define EXT_CSD_SEC_FEATURE_SUPPORT 231 /* RO */
	#define EXT_CSD_TRIM_MULT 232 /* RO */
	#define EXT_CSD_PWR_CL_200_195 236 /* RO */
	#define EXT_CSD_PWR_CL_200_360 237 /* RO */
	#define EXT_CSD_PWR_CL_DDR_52_195 238 /* RO */
	#define EXT_CSD_PWR_CL_DDR_52_360 239 /* RO */
	#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */
	#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */

	/*
	* EXT_CSD field definitions
	*/

	#define EXT_CSD_WR_REL_PARAM_EN (1<<2)

	#define EXT_CSD_PART_CONFIG_ACC_MASK (0x7)
	#define EXT_CSD_PART_CONFIG_ACC_BOOT0 (0x1)
	#define EXT_CSD_PART_CONFIG_ACC_GP0 (0x4)

	#define EXT_CSD_PART_SUPPORT_PART_EN (0x1)

	#define EXT_CSD_CMD_SET_NORMAL (1<<0)
	#define EXT_CSD_CMD_SET_SECURE (1<<1)
	#define EXT_CSD_CMD_SET_CPSECURE (1<<2)

	#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
	#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
	#define EXT_CSD_CARD_TYPE_MASK 0xF /* Mask out reserved bits */
	#define EXT_CSD_CARD_TYPE_DDR_1_8V (1<<2) /* Card can run at 52MHz */
	/* DDR mode @1.8V or 3V I/O */
	#define EXT_CSD_CARD_TYPE_DDR_1_2V (1<<3) /* Card can run at 52MHz */
	/* DDR mode @1.2V I/O */
	#define EXT_CSD_CARD_TYPE_DDR_52 (EXT_CSD_CARD_TYPE_DDR_1_8V \
	\| EXT_CSD_CARD_TYPE_DDR_1_2V)

	#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
	#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
	#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
	#define EXT_CSD_DDR_BUS_WIDTH_4 5 /* Card is in 4 bit DDR mode */
	#define EXT_CSD_DDR_BUS_WIDTH_8 6 /* Card is in 8 bit DDR mode */

	#define EXT_CSD_SEC_ER_EN BIT(0)
	#define EXT_CSD_SEC_BD_BLK_EN BIT(2)
	#define EXT_CSD_SEC_GB_CL_EN BIT(4)
	#define EXT_CSD_SEC_SANITIZE BIT(6) /* v4.5 only */

	#define EXT_CSD_RST_N_EN_MASK 0x3
	#define EXT_CSD_RST_N_ENABLED 1 /* RST_n is enabled on card */

	#define EXT_CSD_NO_POWER_NOTIFICATION 0
	#define EXT_CSD_POWER_ON 1
	#define EXT_CSD_POWER_OFF_SHORT 2
	#define EXT_CSD_POWER_OFF_LONG 3

	#define EXT_CSD_PWR_CL_8BIT_MASK 0xF0 /* 8 bit PWR CLS */
	#define EXT_CSD_PWR_CL_4BIT_MASK 0x0F /* 8 bit PWR CLS */
	#define EXT_CSD_PWR_CL_8BIT_SHIFT 4
	#define EXT_CSD_PWR_CL_4BIT_SHIFT 0
	/*
	* MMC_SWITCH access modes
	*/

	#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
	#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits which are 1 in value */
	#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits which are 1 in value */
	#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */

	#endif /* LINUX_MMC_MMC_H */