Subversion Repositories test_project

/*

 * 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 <linux/mutex.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 mutex lock;

};

int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);

#endif /* __MTD_DOC2000_H__ */