root/include/linux/mtd/doc2000.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. ReadDOC_
  2. WriteDOC_
  3. ReadDOC_
  4. WriteDOC_

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Linux driver for Disk-On-Chip devices
   4  *
   5  * Copyright © 1999 Machine Vision Holdings, Inc.
   6  * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org>
   7  * Copyright © 2002-2003 Greg Ungerer <gerg@snapgear.com>
   8  * Copyright © 2002-2003 SnapGear Inc
   9  */
  10 
  11 #ifndef __MTD_DOC2000_H__
  12 #define __MTD_DOC2000_H__
  13 
  14 #include <linux/mtd/mtd.h>
  15 #include <linux/mutex.h>
  16 
  17 #define DoC_Sig1 0
  18 #define DoC_Sig2 1
  19 
  20 #define DoC_ChipID              0x1000
  21 #define DoC_DOCStatus           0x1001
  22 #define DoC_DOCControl          0x1002
  23 #define DoC_FloorSelect         0x1003
  24 #define DoC_CDSNControl         0x1004
  25 #define DoC_CDSNDeviceSelect    0x1005
  26 #define DoC_ECCConf             0x1006
  27 #define DoC_2k_ECCStatus        0x1007
  28 
  29 #define DoC_CDSNSlowIO          0x100d
  30 #define DoC_ECCSyndrome0        0x1010
  31 #define DoC_ECCSyndrome1        0x1011
  32 #define DoC_ECCSyndrome2        0x1012
  33 #define DoC_ECCSyndrome3        0x1013
  34 #define DoC_ECCSyndrome4        0x1014
  35 #define DoC_ECCSyndrome5        0x1015
  36 #define DoC_AliasResolution     0x101b
  37 #define DoC_ConfigInput         0x101c
  38 #define DoC_ReadPipeInit        0x101d
  39 #define DoC_WritePipeTerm       0x101e
  40 #define DoC_LastDataRead        0x101f
  41 #define DoC_NOP                 0x1020
  42 
  43 #define DoC_Mil_CDSN_IO         0x0800
  44 #define DoC_2k_CDSN_IO          0x1800
  45 
  46 #define DoC_Mplus_NOP                   0x1002
  47 #define DoC_Mplus_AliasResolution       0x1004
  48 #define DoC_Mplus_DOCControl            0x1006
  49 #define DoC_Mplus_AccessStatus          0x1008
  50 #define DoC_Mplus_DeviceSelect          0x1008
  51 #define DoC_Mplus_Configuration         0x100a
  52 #define DoC_Mplus_OutputControl         0x100c
  53 #define DoC_Mplus_FlashControl          0x1020
  54 #define DoC_Mplus_FlashSelect           0x1022
  55 #define DoC_Mplus_FlashCmd              0x1024
  56 #define DoC_Mplus_FlashAddress          0x1026
  57 #define DoC_Mplus_FlashData0            0x1028
  58 #define DoC_Mplus_FlashData1            0x1029
  59 #define DoC_Mplus_ReadPipeInit          0x102a
  60 #define DoC_Mplus_LastDataRead          0x102c
  61 #define DoC_Mplus_LastDataRead1         0x102d
  62 #define DoC_Mplus_WritePipeTerm         0x102e
  63 #define DoC_Mplus_ECCSyndrome0          0x1040
  64 #define DoC_Mplus_ECCSyndrome1          0x1041
  65 #define DoC_Mplus_ECCSyndrome2          0x1042
  66 #define DoC_Mplus_ECCSyndrome3          0x1043
  67 #define DoC_Mplus_ECCSyndrome4          0x1044
  68 #define DoC_Mplus_ECCSyndrome5          0x1045
  69 #define DoC_Mplus_ECCConf               0x1046
  70 #define DoC_Mplus_Toggle                0x1046
  71 #define DoC_Mplus_DownloadStatus        0x1074
  72 #define DoC_Mplus_CtrlConfirm           0x1076
  73 #define DoC_Mplus_Power                 0x1fff
  74 
  75 /* How to access the device?
  76  * On ARM, it'll be mmap'd directly with 32-bit wide accesses.
  77  * On PPC, it's mmap'd and 16-bit wide.
  78  * Others use readb/writeb
  79  */
  80 #if defined(__arm__)
  81 static inline u8 ReadDOC_(u32 __iomem *addr, unsigned long reg)
  82 {
  83         return __raw_readl(addr + reg);
  84 }
  85 static inline void WriteDOC_(u8 data, u32 __iomem *addr, unsigned long reg)
  86 {
  87         __raw_writel(data, addr + reg);
  88         wmb();
  89 }
  90 #define DOC_IOREMAP_LEN 0x8000
  91 #elif defined(__ppc__)
  92 static inline u8 ReadDOC_(u16 __iomem *addr, unsigned long reg)
  93 {
  94         return __raw_readw(addr + reg);
  95 }
  96 static inline void WriteDOC_(u8 data, u16 __iomem *addr, unsigned long reg)
  97 {
  98         __raw_writew(data, addr + reg);
  99         wmb();
 100 }
 101 #define DOC_IOREMAP_LEN 0x4000
 102 #else
 103 #define ReadDOC_(adr, reg)      readb((void __iomem *)(adr) + (reg))
 104 #define WriteDOC_(d, adr, reg)  writeb(d, (void __iomem *)(adr) + (reg))
 105 #define DOC_IOREMAP_LEN 0x2000
 106 
 107 #endif
 108 
 109 #if defined(__i386__) || defined(__x86_64__)
 110 #define USE_MEMCPY
 111 #endif
 112 
 113 /* These are provided to directly use the DoC_xxx defines */
 114 #define ReadDOC(adr, reg)      ReadDOC_(adr,DoC_##reg)
 115 #define WriteDOC(d, adr, reg)  WriteDOC_(d,adr,DoC_##reg)
 116 
 117 #define DOC_MODE_RESET          0
 118 #define DOC_MODE_NORMAL         1
 119 #define DOC_MODE_RESERVED1      2
 120 #define DOC_MODE_RESERVED2      3
 121 
 122 #define DOC_MODE_CLR_ERR        0x80
 123 #define DOC_MODE_RST_LAT        0x10
 124 #define DOC_MODE_BDECT          0x08
 125 #define DOC_MODE_MDWREN         0x04
 126 
 127 #define DOC_ChipID_Doc2k        0x20
 128 #define DOC_ChipID_Doc2kTSOP    0x21    /* internal number for MTD */
 129 #define DOC_ChipID_DocMil       0x30
 130 #define DOC_ChipID_DocMilPlus32 0x40
 131 #define DOC_ChipID_DocMilPlus16 0x41
 132 
 133 #define CDSN_CTRL_FR_B          0x80
 134 #define CDSN_CTRL_FR_B0         0x40
 135 #define CDSN_CTRL_FR_B1         0x80
 136 
 137 #define CDSN_CTRL_ECC_IO        0x20
 138 #define CDSN_CTRL_FLASH_IO      0x10
 139 #define CDSN_CTRL_WP            0x08
 140 #define CDSN_CTRL_ALE           0x04
 141 #define CDSN_CTRL_CLE           0x02
 142 #define CDSN_CTRL_CE            0x01
 143 
 144 #define DOC_ECC_RESET           0
 145 #define DOC_ECC_ERROR           0x80
 146 #define DOC_ECC_RW              0x20
 147 #define DOC_ECC__EN             0x08
 148 #define DOC_TOGGLE_BIT          0x04
 149 #define DOC_ECC_RESV            0x02
 150 #define DOC_ECC_IGNORE          0x01
 151 
 152 #define DOC_FLASH_CE            0x80
 153 #define DOC_FLASH_WP            0x40
 154 #define DOC_FLASH_BANK          0x02
 155 
 156 /* We have to also set the reserved bit 1 for enable */
 157 #define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV)
 158 #define DOC_ECC_DIS (DOC_ECC_RESV)
 159 
 160 struct Nand {
 161         char floor, chip;
 162         unsigned long curadr;
 163         unsigned char curmode;
 164         /* Also some erase/write/pipeline info when we get that far */
 165 };
 166 
 167 #define MAX_FLOORS 4
 168 #define MAX_CHIPS 4
 169 
 170 #define MAX_FLOORS_MIL 1
 171 #define MAX_CHIPS_MIL 1
 172 
 173 #define MAX_FLOORS_MPLUS 2
 174 #define MAX_CHIPS_MPLUS 1
 175 
 176 #define ADDR_COLUMN 1
 177 #define ADDR_PAGE 2
 178 #define ADDR_COLUMN_PAGE 3
 179 
 180 struct DiskOnChip {
 181         unsigned long physadr;
 182         void __iomem *virtadr;
 183         unsigned long totlen;
 184         unsigned char ChipID; /* Type of DiskOnChip */
 185         int ioreg;
 186 
 187         unsigned long mfr; /* Flash IDs - only one type of flash per device */
 188         unsigned long id;
 189         int chipshift;
 190         char page256;
 191         char pageadrlen;
 192         char interleave; /* Internal interleaving - Millennium Plus style */
 193         unsigned long erasesize;
 194 
 195         int curfloor;
 196         int curchip;
 197 
 198         int numchips;
 199         struct Nand *chips;
 200         struct mtd_info *nextdoc;
 201         struct mutex lock;
 202 };
 203 
 204 int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
 205 
 206 #endif /* __MTD_DOC2000_H__ */

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