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diff --git a/kernel/include/linux/mtd/doc2000.h b/kernel/include/linux/mtd/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__ */