mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-17 18:37:32 +02:00
177 lines
5.8 KiB
C
177 lines
5.8 KiB
C
/*
|
|
* 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__ */
|