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doc2000.h
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/* * Linux driver for Disk-On-Chip devices * * Copyright © 1999 Machine Vision Holdings, Inc. * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> * Copyright © 2002-2003 Greg Ungerer <gerg@snapgear.com> * Copyright © 2002-2003 SnapGear Inc * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #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__) static inline u8 ReadDOC_(u32 __iomem *addr, unsigned long reg) { return __raw_readl(addr + reg); } static inline void WriteDOC_(u8 data, u32 __iomem *addr, unsigned long reg) { __raw_writel(data, addr + reg); wmb(); } #define DOC_IOREMAP_LEN 0x8000 #elif defined(__ppc__) static inline u8 ReadDOC_(u16 __iomem *addr, unsigned long reg) { return __raw_readw(addr + reg); } static inline void WriteDOC_(u8 data, u16 __iomem *addr, unsigned long reg) { __raw_writew(data, addr + reg); wmb(); } #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__ */
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