Initial revision

1 files changed, 158 insertions, 0 deletions

diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h
new file mode 100644
index 0000000..c703f77
--- /dev/null
+++ b/include/linux/mtd/doc2000.h
@@ -0,0 +1,158 @@
+
+/* 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__ */