diff options
Diffstat (limited to 'package/uboot-xburst/files/cpu/mips/jz_mmc.h')
| -rw-r--r-- | package/uboot-xburst/files/cpu/mips/jz_mmc.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/package/uboot-xburst/files/cpu/mips/jz_mmc.h b/package/uboot-xburst/files/cpu/mips/jz_mmc.h new file mode 100644 index 0000000000..0c7b70ff8a --- /dev/null +++ b/package/uboot-xburst/files/cpu/mips/jz_mmc.h @@ -0,0 +1,113 @@ +/* + * 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__ */ |