/* * Linux driver for Disk-On-Chip devices * * Copyright (C) 1999 Machine Vision Holdings, Inc. * Copyright (C) 2001-2003 David Woodhouse <dwmw2@infradead.org> * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com> * Copyright (C) 2002-2003 SnapGear Inc * * $Id: doc2000.h,v 1.25 2005/11/07 11:14:54 gleixner Exp $ * * Released under GPL */#ifndef __MTD_DOC2000_H__#define __MTD_DOC2000_H__#include <linux/mtd/mtd.h>#include <asm/semaphore.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 DoC_Mplus_NOP			0x1002#define DoC_Mplus_AliasResolution	0x1004#define DoC_Mplus_DOCControl		0x1006#define DoC_Mplus_AccessStatus		0x1008#define DoC_Mplus_DeviceSelect		0x1008#define DoC_Mplus_Configuration		0x100a#define DoC_Mplus_OutputControl		0x100c#define DoC_Mplus_FlashControl		0x1020#define DoC_Mplus_FlashSelect 		0x1022#define DoC_Mplus_FlashCmd		0x1024#define DoC_Mplus_FlashAddress		0x1026#define DoC_Mplus_FlashData0		0x1028#define DoC_Mplus_FlashData1		0x1029#define DoC_Mplus_ReadPipeInit		0x102a#define DoC_Mplus_LastDataRead		0x102c#define DoC_Mplus_LastDataRead1		0x102d#define DoC_Mplus_WritePipeTerm 	0x102e#define DoC_Mplus_ECCSyndrome0		0x1040#define DoC_Mplus_ECCSyndrome1		0x1041#define DoC_Mplus_ECCSyndrome2		0x1042#define DoC_Mplus_ECCSyndrome3		0x1043#define DoC_Mplus_ECCSyndrome4		0x1044#define DoC_Mplus_ECCSyndrome5		0x1045#define DoC_Mplus_ECCConf 		0x1046#define DoC_Mplus_Toggle		0x1046#define DoC_Mplus_DownloadStatus	0x1074#define DoC_Mplus_CtrlConfirm		0x1076#define DoC_Mplus_Power			0x1fff/* 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)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2))))#define WriteDOC_(d, adr, reg)  do{ *(volatile __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)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1))))#define WriteDOC_(d, adr, reg)  do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)#define DOC_IOREMAP_LEN 0x4000#else#define ReadDOC_(adr, reg)      readb((void __iomem *)(adr) + (reg))#define WriteDOC_(d, adr, reg)  writeb(d, (void __iomem *)(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_CLR_ERR 	0x80#define	DOC_MODE_RST_LAT	0x10#define	DOC_MODE_BDECT		0x08#define DOC_MODE_MDWREN 	0x04#define DOC_ChipID_Doc2k 	0x20#define DOC_ChipID_Doc2kTSOP 	0x21	/* internal number for MTD */#define DOC_ChipID_DocMil 	0x30#define DOC_ChipID_DocMilPlus32	0x40#define DOC_ChipID_DocMilPlus16	0x41#define CDSN_CTRL_FR_B 		0x80#define CDSN_CTRL_FR_B0		0x40#define CDSN_CTRL_FR_B1		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#define DOC_FLASH_CE		0x80#define DOC_FLASH_WP		0x40#define DOC_FLASH_BANK		0x02/* 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 1#define MAX_CHIPS_MIL 1#define MAX_FLOORS_MPLUS 2#define MAX_CHIPS_MPLUS 1#define ADDR_COLUMN 1#define ADDR_PAGE 2#define ADDR_COLUMN_PAGE 3struct DiskOnChip {	unsigned long physadr;	void __iomem *virtadr;	unsigned long totlen;	unsigned 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;	char interleave; /* Internal interleaving - Millennium Plus style */	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__ */