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/* Common Flash Interface structures
* See http://support.intel.com/design/flash/technote/index.htm
* $Id: cfi.h,v 1.6 2000/07/03 13:29:16 dwmw2 Exp $
*/
#ifndef __MTD_CFI_H__
#define __MTD_CFI_H__
#include <linux/types.h>
#include <linux/mtd/flashchip.h>
/* NB: We keep these structures in memory in HOST byteorder, except
* where individually noted.
*/
/* Basic Query Structure */
struct cfi_ident {
__u8 qry[3];
__u16 P_ID;
__u16 P_ADR;
__u16 A_ID;
__u16 A_ADR;
__u8 VccMin;
__u8 VccMax;
__u8 VppMin;
__u8 VppMax;
__u8 WordWriteTimeoutTyp;
__u8 BufWriteTimeoutTyp;
__u8 BlockEraseTimeoutTyp;
__u8 ChipEraseTimeoutTyp;
__u8 WordWriteTimeoutMax;
__u8 BufWriteTimeoutMax;
__u8 BlockEraseTimeoutMax;
__u8 ChipEraseTimeoutMax;
__u8 DevSize;
__u16 InterfaceDesc;
__u16 MaxBufWriteSize;
__u8 NumEraseRegions;
__u32 EraseRegionInfo[1]; /* Not host ordered */
} __attribute__((packed));
/* Extended Query Structure for both PRI and ALT */
struct cfi_extquery {
__u8 pri[3];
__u8 MajorVersion;
__u8 MinorVersion;
} __attribute__((packed));
/* Vendor-Specific PRI for Intel/Sharp Extended Command Set (0x0001) */
struct cfi_pri_intelext {
__u8 pri[3];
__u8 MajorVersion;
__u8 MinorVersion;
__u32 FeatureSupport;
__u8 SuspendCmdSupport;
__u16 BlkStatusRegMask;
__u8 VccOptimal;
__u8 VppOptimal;
} __attribute__((packed));
struct cfi_pri_query {
__u8 NumFields;
__u32 ProtField[1]; /* Not host ordered */
} __attribute__((packed));
struct cfi_bri_query {
__u8 PageModeReadCap;
__u8 NumFields;
__u32 ConfField[1]; /* Not host ordered */
} __attribute__((packed));
#define P_ID_NONE 0
#define P_ID_INTEL_EXT 1
#define P_ID_AMD_STD 2
#define P_ID_INTEL_STD 3
#define P_ID_AMD_EXT 4
#define P_ID_MITSUBISHI_STD 256
#define P_ID_MITSUBISHI_EXT 257
#define P_ID_RESERVED 65535
struct cfi_private {
__u16 cmdset;
void *cmdset_priv;
int interleave;
struct mtd_info *(*cmdset_setup)(struct map_info *);
struct cfi_ident cfiq; /* For now only one. We insist that all devs
must be of the same type. */
int numchips;
unsigned long chipshift; /* Because they're of the same type */
struct flchip chips[0]; /* per-chip data structure for each chip */
const char *im_name; /* inter_module name for cmdset_setup */
};
#define MAX_CFI_CHIPS 8 /* Entirely arbitrary to avoid realloc() */
#endif /* __MTD_CFI_H__ */
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