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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__
#include "mmc_protocol.h"
#define MMC_DEBUG_LEVEL 0 /* Enable Debug: 0 - no debug */
#define MMC_BLOCK_SIZE 512 /* MMC/SD Block Size */
#define ID_TO_RCA(x) ((x)+1)
#define MMC_OCR_ARG 0x00ff8000 /* Argument of OCR */
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,
};
/* the information structure of MMC/SD Card */
typedef 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;
} mmc_info;
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);
void jz_mmc_hardware_init(void);
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);
}
int mmc_legacy_init(int verbose);
int mmc_read(ulong src, uchar *dst, int size);
int mmc_write(uchar *src, ulong dst, int size);
int mmc2info(ulong addr);
#endif /* __MMC_JZMMC_H__ */
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