/* 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__#include <linux/mtd/mtd.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/* How to access the device?  * On ARM, it'll be mmap'd directly with 32-bit wide accesses.  * On PPC, it's mmap'd and 16-bit wide. * Others use readb/writeb  */#if defined(__arm__)#define ReadDOC_(adr, reg)      ((unsigned char)(*(__u32 *)(((unsigned long)adr)+((reg)<<2))))#define WriteDOC_(d, adr, reg)  do{ *(__u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)#define DOC_IOREMAP_LEN 0x8000#elif defined(__ppc__)#define ReadDOC_(adr, reg)      ((unsigned char)(*(__u16 *)(((unsigned long)adr)+((reg)<<1))))#define WriteDOC_(d, adr, reg)  do{ *(__u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)#define DOC_IOREMAP_LEN 0x4000#else#define ReadDOC_(adr, reg)      readb(((unsigned long)adr) + (reg))#define WriteDOC_(d, adr, reg)  writeb(d, ((unsigned long)adr) + (reg))#define DOC_IOREMAP_LEN 0x2000#endif#if defined(__i386__) || defined(__x86_64__)#define USE_MEMCPY#endif/* 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_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 3struct DiskOnChip {	unsigned long physadr;	unsigned long virtadr;	unsigned long totlen;	char ChipID; /* Type of DiskOnChip */	int ioreg;		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;	struct mtd_info *nextdoc;	struct semaphore lock;};int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);#endif /* __MTD_DOC2000_H__ */