LXR uboot/include/linux/mtd/doc2000.h

   1/*
   2 * Linux driver for Disk-On-Chip devices
   3 *
   4 * Copyright (C) 1999 Machine Vision Holdings, Inc.
   5 * Copyright (C) 2001-2003 David Woodhouse <dwmw2@infradead.org>
   6 * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com>
   7 * Copyright (C) 2002-2003 SnapGear Inc
   8 *
   9 * Released under GPL
  10 */
  11
  12#ifndef __MTD_DOC2000_H__
  13#define __MTD_DOC2000_H__
  14
  15#include <linux/mtd/mtd.h>
  16#if 0
  17#include <linux/mutex.h>
  18#endif
  19
  20#define DoC_Sig1 0
  21#define DoC_Sig2 1
  22
  23#define DoC_ChipID              0x1000
  24#define DoC_DOCStatus           0x1001
  25#define DoC_DOCControl          0x1002
  26#define DoC_FloorSelect         0x1003
  27#define DoC_CDSNControl         0x1004
  28#define DoC_CDSNDeviceSelect    0x1005
  29#define DoC_ECCConf             0x1006
  30#define DoC_2k_ECCStatus        0x1007
  31
  32#define DoC_CDSNSlowIO          0x100d
  33#define DoC_ECCSyndrome0        0x1010
  34#define DoC_ECCSyndrome1        0x1011
  35#define DoC_ECCSyndrome2        0x1012
  36#define DoC_ECCSyndrome3        0x1013
  37#define DoC_ECCSyndrome4        0x1014
  38#define DoC_ECCSyndrome5        0x1015
  39#define DoC_AliasResolution     0x101b
  40#define DoC_ConfigInput         0x101c
  41#define DoC_ReadPipeInit        0x101d
  42#define DoC_WritePipeTerm       0x101e
  43#define DoC_LastDataRead        0x101f
  44#define DoC_NOP                 0x1020
  45
  46#define DoC_Mil_CDSN_IO         0x0800
  47#define DoC_2k_CDSN_IO          0x1800
  48
  49#define DoC_Mplus_NOP                   0x1002
  50#define DoC_Mplus_AliasResolution       0x1004
  51#define DoC_Mplus_DOCControl            0x1006
  52#define DoC_Mplus_AccessStatus          0x1008
  53#define DoC_Mplus_DeviceSelect          0x1008
  54#define DoC_Mplus_Configuration         0x100a
  55#define DoC_Mplus_OutputControl         0x100c
  56#define DoC_Mplus_FlashControl          0x1020
  57#define DoC_Mplus_FlashSelect           0x1022
  58#define DoC_Mplus_FlashCmd              0x1024
  59#define DoC_Mplus_FlashAddress          0x1026
  60#define DoC_Mplus_FlashData0            0x1028
  61#define DoC_Mplus_FlashData1            0x1029
  62#define DoC_Mplus_ReadPipeInit          0x102a
  63#define DoC_Mplus_LastDataRead          0x102c
  64#define DoC_Mplus_LastDataRead1         0x102d
  65#define DoC_Mplus_WritePipeTerm         0x102e
  66#define DoC_Mplus_ECCSyndrome0          0x1040
  67#define DoC_Mplus_ECCSyndrome1          0x1041
  68#define DoC_Mplus_ECCSyndrome2          0x1042
  69#define DoC_Mplus_ECCSyndrome3          0x1043
  70#define DoC_Mplus_ECCSyndrome4          0x1044
  71#define DoC_Mplus_ECCSyndrome5          0x1045
  72#define DoC_Mplus_ECCConf               0x1046
  73#define DoC_Mplus_Toggle                0x1046
  74#define DoC_Mplus_DownloadStatus        0x1074
  75#define DoC_Mplus_CtrlConfirm           0x1076
  76#define DoC_Mplus_Power                 0x1fff
  77
  78/* How to access the device?
  79 * On ARM, it'll be mmap'd directly with 32-bit wide accesses.
  80 * On PPC, it's mmap'd and 16-bit wide.
  81 * Others use readb/writeb
  82 */
  83#if defined(__arm__)
  84#define ReadDOC_(adr, reg)      ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2))))
  85#define WriteDOC_(d, adr, reg)  do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
  86#define DOC_IOREMAP_LEN 0x8000
  87#elif defined(__ppc__)
  88#define ReadDOC_(adr, reg)      ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1))))
  89#define WriteDOC_(d, adr, reg)  do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
  90#define DOC_IOREMAP_LEN 0x4000
  91#else
  92#define ReadDOC_(adr, reg)      readb((void __iomem *)(adr) + (reg))
  93#define WriteDOC_(d, adr, reg)  writeb(d, (void __iomem *)(adr) + (reg))
  94#define DOC_IOREMAP_LEN 0x2000
  95
  96#endif
  97
  98#if defined(__i386__) || defined(__x86_64__)
  99#define USE_MEMCPY
 100#endif
 101
 102/* These are provided to directly use the DoC_xxx defines */
 103#define ReadDOC(adr, reg)      ReadDOC_(adr,DoC_##reg)
 104#define WriteDOC(d, adr, reg)  WriteDOC_(d,adr,DoC_##reg)
 105
 106#define DOC_MODE_RESET          0
 107#define DOC_MODE_NORMAL         1
 108#define DOC_MODE_RESERVED1      2
 109#define DOC_MODE_RESERVED2      3
 110
 111#define DOC_MODE_CLR_ERR        0x80
 112#define DOC_MODE_RST_LAT        0x10
 113#define DOC_MODE_BDECT          0x08
 114#define DOC_MODE_MDWREN 0x04
 115
 116#define DOC_ChipID_Doc2k        0x20
 117#define DOC_ChipID_Doc2kTSOP    0x21    /* internal number for MTD */
 118#define DOC_ChipID_DocMil       0x30
 119#define DOC_ChipID_DocMilPlus32 0x40
 120#define DOC_ChipID_DocMilPlus16 0x41
 121
 122#define CDSN_CTRL_FR_B          0x80
 123#define CDSN_CTRL_FR_B0         0x40
 124#define CDSN_CTRL_FR_B1         0x80
 125
 126#define CDSN_CTRL_ECC_IO        0x20
 127#define CDSN_CTRL_FLASH_IO      0x10
 128#define CDSN_CTRL_WP            0x08
 129#define CDSN_CTRL_ALE           0x04
 130#define CDSN_CTRL_CLE           0x02
 131#define CDSN_CTRL_CE            0x01
 132
 133#define DOC_ECC_RESET           0
 134#define DOC_ECC_ERROR           0x80
 135#define DOC_ECC_RW              0x20
 136#define DOC_ECC__EN             0x08
 137#define DOC_TOGGLE_BIT          0x04
 138#define DOC_ECC_RESV            0x02
 139#define DOC_ECC_IGNORE          0x01
 140
 141#define DOC_FLASH_CE            0x80
 142#define DOC_FLASH_WP            0x40
 143#define DOC_FLASH_BANK          0x02
 144
 145/* We have to also set the reserved bit 1 for enable */
 146#define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
 147#define DOC_ECC_DIS (DOC_ECC_RESV)
 148
 149struct Nand {
 150        char floor, chip;
 151        unsigned long curadr;
 152        unsigned char curmode;
 153        /* Also some erase/write/pipeline info when we get that far */
 154};
 155
 156#define MAX_FLOORS 4
 157#define MAX_CHIPS 4
 158
 159#define MAX_FLOORS_MIL 1
 160#define MAX_CHIPS_MIL 1
 161
 162#define MAX_FLOORS_MPLUS 2
 163#define MAX_CHIPS_MPLUS 1
 164
 165#define ADDR_COLUMN 1
 166#define ADDR_PAGE 2
 167#define ADDR_COLUMN_PAGE 3
 168
 169struct DiskOnChip {
 170        unsigned long physadr;
 171        void __iomem *virtadr;
 172        unsigned long totlen;
 173        unsigned char ChipID; /* Type of DiskOnChip */
 174        int ioreg;
 175
 176        unsigned long mfr; /* Flash IDs - only one type of flash per device */
 177        unsigned long id;
 178        int chipshift;
 179        char page256;
 180        char pageadrlen;
 181        char interleave; /* Internal interleaving - Millennium Plus style */
 182        unsigned long erasesize;
 183
 184        int curfloor;
 185        int curchip;
 186
 187        int numchips;
 188        struct Nand *chips;
 189        struct mtd_info *nextdoc;
 190/* XXX U-BOOT XXX */
 191#if 0
 192        struct mutex lock;
 193#endif
 194};
 195
 196int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
 197
 198/* XXX U-BOOT XXX */
 199#if 1
 200/*
 201 * NAND Flash Manufacturer ID Codes
 202 */
 203#define NAND_MFR_TOSHIBA   0x98
 204#define NAND_MFR_SAMSUNG   0xec
 205#endif
 206
 207#endif /* __MTD_DOC2000_H__ */
 208