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authorwdenk <wdenk>2002-03-08 21:31:05 +0000
committerwdenk <wdenk>2002-03-08 21:31:05 +0000
commit012771d88adfb5e0886591880041f05fc8b15bdd (patch)
tree9cd947b8b4c6f05cff5be1b69a0f1ca81b2c86ec /include/linux/mtd/doc2000.h
parent67fc21f34ef642417e7418a0575d5b5ff70d77d8 (diff)
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+
+/* Linux driver for Disk-On-Chip 2000 */
+/* (c) 1999 Machine Vision Holdings, Inc. */
+/* Author: David Woodhouse <dwmw2@mvhi.com> */
+/* $Id: doc2000.h,v 1.15 2001/09/19 00:22:15 dwmw2 Exp $ */
+
+#ifndef __MTD_DOC2000_H__
+#define __MTD_DOC2000_H__
+
+struct DiskOnChip;
+
+#include <linux/mtd/nftl.h>
+
+#define DoC_Sig1 0
+#define DoC_Sig2 1
+
+#define DoC_ChipID 0x1000
+#define DoC_DOCStatus 0x1001
+#define DoC_DOCControl 0x1002
+#define DoC_FloorSelect 0x1003
+#define DoC_CDSNControl 0x1004
+#define DoC_CDSNDeviceSelect 0x1005
+#define DoC_ECCConf 0x1006
+#define DoC_2k_ECCStatus 0x1007
+
+#define DoC_CDSNSlowIO 0x100d
+#define DoC_ECCSyndrome0 0x1010
+#define DoC_ECCSyndrome1 0x1011
+#define DoC_ECCSyndrome2 0x1012
+#define DoC_ECCSyndrome3 0x1013
+#define DoC_ECCSyndrome4 0x1014
+#define DoC_ECCSyndrome5 0x1015
+#define DoC_AliasResolution 0x101b
+#define DoC_ConfigInput 0x101c
+#define DoC_ReadPipeInit 0x101d
+#define DoC_WritePipeTerm 0x101e
+#define DoC_LastDataRead 0x101f
+#define DoC_NOP 0x1020
+
+#define DoC_Mil_CDSN_IO 0x0800
+#define DoC_2k_CDSN_IO 0x1800
+
+#define ReadDOC_(adr, reg) ((volatile unsigned char)(*(volatile __u8 *)(((unsigned long)adr)+((reg)))))
+#define WriteDOC_(d, adr, reg) do{ *(volatile __u8 *)(((unsigned long)adr)+((reg))) = (__u8)d; eieio();} while(0)
+
+#define DOC_IOREMAP_LEN 0x4000
+
+/* These are provided to directly use the DoC_xxx defines */
+#define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg)
+#define WriteDOC(d, adr, reg) WriteDOC_(d,adr,DoC_##reg)
+
+#define DOC_MODE_RESET 0
+#define DOC_MODE_NORMAL 1
+#define DOC_MODE_RESERVED1 2
+#define DOC_MODE_RESERVED2 3
+
+#define DOC_MODE_MDWREN 4
+#define DOC_MODE_CLR_ERR 0x80
+
+#define DOC_ChipID_UNKNOWN 0x00
+#define DOC_ChipID_Doc2k 0x20
+#define DOC_ChipID_DocMil 0x30
+
+#define CDSN_CTRL_FR_B 0x80
+#define CDSN_CTRL_ECC_IO 0x20
+#define CDSN_CTRL_FLASH_IO 0x10
+#define CDSN_CTRL_WP 0x08
+#define CDSN_CTRL_ALE 0x04
+#define CDSN_CTRL_CLE 0x02
+#define CDSN_CTRL_CE 0x01
+
+#define DOC_ECC_RESET 0
+#define DOC_ECC_ERROR 0x80
+#define DOC_ECC_RW 0x20
+#define DOC_ECC__EN 0x08
+#define DOC_TOGGLE_BIT 0x04
+#define DOC_ECC_RESV 0x02
+#define DOC_ECC_IGNORE 0x01
+
+/* We have to also set the reserved bit 1 for enable */
+#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
+#define DOC_ECC_DIS (DOC_ECC_RESV)
+
+struct Nand {
+ char floor, chip;
+ unsigned long curadr;
+ unsigned char curmode;
+ /* Also some erase/write/pipeline info when we get that far */
+};
+
+#define MAX_FLOORS 4
+#define MAX_CHIPS 4
+
+#define MAX_FLOORS_MIL 4
+#define MAX_CHIPS_MIL 1
+
+#define ADDR_COLUMN 1
+#define ADDR_PAGE 2
+#define ADDR_COLUMN_PAGE 3
+
+struct DiskOnChip {
+ unsigned long physadr;
+ unsigned long virtadr;
+ unsigned long totlen;
+ char* name;
+ char ChipID; /* Type of DiskOnChip */
+ int ioreg;
+
+ char* chips_name;
+ unsigned long mfr; /* Flash IDs - only one type of flash per device */
+ unsigned long id;
+ int chipshift;
+ char page256;
+ char pageadrlen;
+ unsigned long erasesize;
+
+ int curfloor;
+ int curchip;
+
+ int numchips;
+ struct Nand *chips;
+
+ int nftl_found;
+ struct NFTLrecord nftl;
+};
+
+#define SECTORSIZE 512
+
+/* Return codes from doc_write(), doc_read(), and doc_erase().
+ */
+#define DOC_OK 0
+#define DOC_EIO 1
+#define DOC_EINVAL 2
+#define DOC_EECC 3
+#define DOC_ETIMEOUT 4
+
+/*
+ * Function Prototypes
+ */
+int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
+
+int doc_rw(struct DiskOnChip* this, int cmd, loff_t from, size_t len,
+ size_t *retlen, u_char *buf);
+int doc_read_ecc(struct DiskOnChip* this, loff_t from, size_t len,
+ size_t *retlen, u_char *buf, u_char *eccbuf);
+int doc_write_ecc(struct DiskOnChip* this, loff_t to, size_t len,
+ size_t *retlen, const u_char *buf, u_char *eccbuf);
+int doc_read_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
+ size_t *retlen, u_char *buf);
+int doc_write_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
+ size_t *retlen, const u_char *buf);
+int doc_erase (struct DiskOnChip* this, loff_t ofs, size_t len);
+
+void doc_probe(unsigned long physadr);
+
+void doc_print(struct DiskOnChip*);
+
+#endif /* __MTD_DOC2000_H__ */