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 * $Id: doc2000.h,v 1.25 2005/11/07 11:14:54 gleixner Exp $ 10 * 11 * Released under GPL 12 */ 13 14 #ifndef __MTD_DOC2000_H__ 15 #define __MTD_DOC2000_H__ 16 17 #include <linux/mtd/mtd.h> 18 #if 0 19 #include <linux/mutex.h> 20 #endif 21 22 #define DoC_Sig1 0 23 #define DoC_Sig2 1 24 25 #define DoC_ChipID 0x1000 26 #define DoC_DOCStatus 0x1001 27 #define DoC_DOCControl 0x1002 28 #define DoC_FloorSelect 0x1003 29 #define DoC_CDSNControl 0x1004 30 #define DoC_CDSNDeviceSelect 0x1005 31 #define DoC_ECCConf 0x1006 32 #define DoC_2k_ECCStatus 0x1007 33 34 #define DoC_CDSNSlowIO 0x100d 35 #define DoC_ECCSyndrome0 0x1010 36 #define DoC_ECCSyndrome1 0x1011 37 #define DoC_ECCSyndrome2 0x1012 38 #define DoC_ECCSyndrome3 0x1013 39 #define DoC_ECCSyndrome4 0x1014 40 #define DoC_ECCSyndrome5 0x1015 41 #define DoC_AliasResolution 0x101b 42 #define DoC_ConfigInput 0x101c 43 #define DoC_ReadPipeInit 0x101d 44 #define DoC_WritePipeTerm 0x101e 45 #define DoC_LastDataRead 0x101f 46 #define DoC_NOP 0x1020 47 48 #define DoC_Mil_CDSN_IO 0x0800 49 #define DoC_2k_CDSN_IO 0x1800 50 51 #define DoC_Mplus_NOP 0x1002 52 #define DoC_Mplus_AliasResolution 0x1004 53 #define DoC_Mplus_DOCControl 0x1006 54 #define DoC_Mplus_AccessStatus 0x1008 55 #define DoC_Mplus_DeviceSelect 0x1008 56 #define DoC_Mplus_Configuration 0x100a 57 #define DoC_Mplus_OutputControl 0x100c 58 #define DoC_Mplus_FlashControl 0x1020 59 #define DoC_Mplus_FlashSelect 0x1022 60 #define DoC_Mplus_FlashCmd 0x1024 61 #define DoC_Mplus_FlashAddress 0x1026 62 #define DoC_Mplus_FlashData0 0x1028 63 #define DoC_Mplus_FlashData1 0x1029 64 #define DoC_Mplus_ReadPipeInit 0x102a 65 #define DoC_Mplus_LastDataRead 0x102c 66 #define DoC_Mplus_LastDataRead1 0x102d 67 #define DoC_Mplus_WritePipeTerm 0x102e 68 #define DoC_Mplus_ECCSyndrome0 0x1040 69 #define DoC_Mplus_ECCSyndrome1 0x1041 70 #define DoC_Mplus_ECCSyndrome2 0x1042 71 #define DoC_Mplus_ECCSyndrome3 0x1043 72 #define DoC_Mplus_ECCSyndrome4 0x1044 73 #define DoC_Mplus_ECCSyndrome5 0x1045 74 #define DoC_Mplus_ECCConf 0x1046 75 #define DoC_Mplus_Toggle 0x1046 76 #define DoC_Mplus_DownloadStatus 0x1074 77 #define DoC_Mplus_CtrlConfirm 0x1076 78 #define DoC_Mplus_Power 0x1fff 79 80 /* How to access the device? 81 * On ARM, it'll be mmap'd directly with 32-bit wide accesses. 82 * On PPC, it's mmap'd and 16-bit wide. 83 * Others use readb/writeb 84 */ 85 #if defined(__arm__) 86 #define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)))) 87 #define WriteDOC_(d, adr, reg) do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0) 88 #define DOC_IOREMAP_LEN 0x8000 89 #elif defined(__ppc__) 90 #define ReadDOC_(adr, reg) ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)))) 91 #define WriteDOC_(d, adr, reg) do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0) 92 #define DOC_IOREMAP_LEN 0x4000 93 #else 94 #define ReadDOC_(adr, reg) readb((void __iomem *)(adr) + (reg)) 95 #define WriteDOC_(d, adr, reg) writeb(d, (void __iomem *)(adr) + (reg)) 96 #define DOC_IOREMAP_LEN 0x2000 97 98 #endif 99 100 #if defined(__i386__) || defined(__x86_64__) 101 #define USE_MEMCPY 102 #endif 103 104 /* These are provided to directly use the DoC_xxx defines */ 105 #define ReadDOC(adr, reg) ReadDOC_(adr,DoC_##reg) 106 #define WriteDOC(d, adr, reg) WriteDOC_(d,adr,DoC_##reg) 107 108 #define DOC_MODE_RESET 0 109 #define DOC_MODE_NORMAL 1 110 #define DOC_MODE_RESERVED1 2 111 #define DOC_MODE_RESERVED2 3 112 113 #define DOC_MODE_CLR_ERR 0x80 114 #define DOC_MODE_RST_LAT 0x10 115 #define DOC_MODE_BDECT 0x08 116 #define DOC_MODE_MDWREN 0x04 117 118 #define DOC_ChipID_Doc2k 0x20 119 #define DOC_ChipID_Doc2kTSOP 0x21 /* internal number for MTD */ 120 #define DOC_ChipID_DocMil 0x30 121 #define DOC_ChipID_DocMilPlus32 0x40 122 #define DOC_ChipID_DocMilPlus16 0x41 123 124 #define CDSN_CTRL_FR_B 0x80 125 #define CDSN_CTRL_FR_B0 0x40 126 #define CDSN_CTRL_FR_B1 0x80 127 128 #define CDSN_CTRL_ECC_IO 0x20 129 #define CDSN_CTRL_FLASH_IO 0x10 130 #define CDSN_CTRL_WP 0x08 131 #define CDSN_CTRL_ALE 0x04 132 #define CDSN_CTRL_CLE 0x02 133 #define CDSN_CTRL_CE 0x01 134 135 #define DOC_ECC_RESET 0 136 #define DOC_ECC_ERROR 0x80 137 #define DOC_ECC_RW 0x20 138 #define DOC_ECC__EN 0x08 139 #define DOC_TOGGLE_BIT 0x04 140 #define DOC_ECC_RESV 0x02 141 #define DOC_ECC_IGNORE 0x01 142 143 #define DOC_FLASH_CE 0x80 144 #define DOC_FLASH_WP 0x40 145 #define DOC_FLASH_BANK 0x02 146 147 /* We have to also set the reserved bit 1 for enable */ 148 #define DOC_ECC_EN (DOC_ECC__EN | DOC_ECC_RESV) 149 #define DOC_ECC_DIS (DOC_ECC_RESV) 150 151 struct Nand { 152 char floor, chip; 153 unsigned long curadr; 154 unsigned char curmode; 155 /* Also some erase/write/pipeline info when we get that far */ 156 }; 157 158 #define MAX_FLOORS 4 159 #define MAX_CHIPS 4 160 161 #define MAX_FLOORS_MIL 1 162 #define MAX_CHIPS_MIL 1 163 164 #define MAX_FLOORS_MPLUS 2 165 #define MAX_CHIPS_MPLUS 1 166 167 #define ADDR_COLUMN 1 168 #define ADDR_PAGE 2 169 #define ADDR_COLUMN_PAGE 3 170 171 struct DiskOnChip { 172 unsigned long physadr; 173 void __iomem *virtadr; 174 unsigned long totlen; 175 unsigned char ChipID; /* Type of DiskOnChip */ 176 int ioreg; 177 178 unsigned long mfr; /* Flash IDs - only one type of flash per device */ 179 unsigned long id; 180 int chipshift; 181 char page256; 182 char pageadrlen; 183 char interleave; /* Internal interleaving - Millennium Plus style */ 184 unsigned long erasesize; 185 186 int curfloor; 187 int curchip; 188 189 int numchips; 190 struct Nand *chips; 191 struct mtd_info *nextdoc; 192 /* XXX U-BOOT XXX */ 193 #if 0 194 struct mutex lock; 195 #endif 196 }; 197 198 int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]); 199 200 /* XXX U-BOOT XXX */ 201 #if 1 202 /* 203 * NAND Flash Manufacturer ID Codes 204 */ 205 #define NAND_MFR_TOSHIBA 0x98 206 #define NAND_MFR_SAMSUNG 0xec 207 #endif 208 209 #endif /* __MTD_DOC2000_H__ */ 210