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openwrt-xburst/package/uboot-xburst/files/drivers/mmc/jz_mmc.h

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/*
* linux/drivers/mmc/jz_mmc.h
*
* Author: Vladimir Shebordaev, Igor Oblakov
* Copyright: MontaVista Software Inc.
*
* $Id: jz_mmc.h,v 1.3 2007-06-15 08:04:20 jlwei Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __MMC_JZMMC_H__
#define __MMC_JZMMC_H__
#define ID_TO_RCA(x) ((x)+1)
#define MMC_OCR_ARG 0x00ff8000 /* Argument of OCR */
/* Standard MMC/SD clock speeds */
#define MMC_CLOCK_SLOW 400000 /* 400 kHz for initial setup */
#define MMC_CLOCK_FAST 20000000 /* 20 MHz for maximum for normal operation */
#define SD_CLOCK_FAST 24000000 /* 24 MHz for SD Cards */
/* Use negative numbers to disambiguate */
#define MMC_CIM_RESET -1
#define SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
#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 MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
#define MMC_PROGRAM_CID 26 /* adtc R1 */
#define MMC_PROGRAM_CSD 27 /* adtc R1 */
#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1b */
#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
enum mmc_result_t {
MMC_NO_RESPONSE = -1,
MMC_NO_ERROR = 0,
MMC_ERROR_OUT_OF_RANGE,
MMC_ERROR_ADDRESS,
MMC_ERROR_BLOCK_LEN,
MMC_ERROR_ERASE_SEQ,
MMC_ERROR_ERASE_PARAM,
MMC_ERROR_WP_VIOLATION,
MMC_ERROR_CARD_IS_LOCKED,
MMC_ERROR_LOCK_UNLOCK_FAILED,
MMC_ERROR_COM_CRC,
MMC_ERROR_ILLEGAL_COMMAND,
MMC_ERROR_CARD_ECC_FAILED,
MMC_ERROR_CC,
MMC_ERROR_GENERAL,
MMC_ERROR_UNDERRUN,
MMC_ERROR_OVERRUN,
MMC_ERROR_CID_CSD_OVERWRITE,
MMC_ERROR_STATE_MISMATCH,
MMC_ERROR_HEADER_MISMATCH,
MMC_ERROR_TIMEOUT,
MMC_ERROR_CRC,
MMC_ERROR_DRIVER_FAILURE,
};
enum card_state {
CARD_STATE_EMPTY = -1,
CARD_STATE_IDLE = 0,
CARD_STATE_READY = 1,
CARD_STATE_IDENT = 2,
CARD_STATE_STBY = 3,
CARD_STATE_TRAN = 4,
CARD_STATE_DATA = 5,
CARD_STATE_RCV = 6,
CARD_STATE_PRG = 7,
CARD_STATE_DIS = 8,
};
enum mmc_rsp_t {
RESPONSE_NONE = 0,
RESPONSE_R1 = 1,
RESPONSE_R1B = 2,
RESPONSE_R2_CID = 3,
RESPONSE_R2_CSD = 4,
RESPONSE_R3 = 5,
RESPONSE_R4 = 6,
RESPONSE_R5 = 7,
RESPONSE_R6 = 8,
};
struct mmc_response_r1 {
u8 cmd;
u32 status;
};
struct mmc_response_r3 {
u32 ocr;
};
/* the information structure of MMC/SD Card */
struct mmc_info {
int id; /* Card index */
int sd; /* MMC or SD card */
int rca; /* RCA */
u32 scr; /* SCR 63:32*/
int flags; /* Ejected, inserted */
enum card_state state; /* empty, ident, ready, whatever */
/* Card specific information */
struct mmc_cid cid;
struct mmc_csd csd;
u32 block_num;
u32 block_len;
u32 erase_unit;
};
struct mmc_info mmcinfo;
struct mmc_request {
int index; /* Slot index - used for CS lines */
int cmd; /* Command to send */
u32 arg; /* Argument to send */
enum mmc_rsp_t rtype; /* Response type expected */
/* Data transfer (these may be modified at the low level) */
u16 nob; /* Number of blocks to transfer*/
u16 block_len; /* Block length */
u8 *buffer; /* Data buffer */
u32 cnt; /* Data length, for PIO */
/* Results */
u8 response[18]; /* Buffer to store response - CRC is optional */
enum mmc_result_t result;
};
char * mmc_result_to_string(int);
int mmc_unpack_csd(struct mmc_request *request, struct mmc_csd *csd);
int mmc_unpack_r1(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state);
int mmc_unpack_r6(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, int *rca);
int mmc_unpack_scr(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, u32 *scr);
int mmc_unpack_cid(struct mmc_request *request, struct mmc_cid *cid);
int mmc_unpack_r3(struct mmc_request *request, struct mmc_response_r3 *r3);
void mmc_send_cmd(struct mmc_request *request, int cmd, u32 arg,
u16 nob, u16 block_len, enum mmc_rsp_t rtype, u8 *buffer);
u32 mmc_tran_speed(u8 ts);
void jz_mmc_set_clock(int sd, u32 rate);
static inline void mmc_simple_cmd(struct mmc_request *request, int cmd, u32 arg, enum mmc_rsp_t rtype)
{
mmc_send_cmd( request, cmd, arg, 0, 0, rtype, 0);
}
#endif /* __MMC_JZMMC_H__ */