doc2000.h
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- /*
- * 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 1.24 2005/01/05 12:40:38 dwmw2 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 3
- struct 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__ */