1 files changed, 195 insertions, 0 deletions

diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h
new file mode 100644
index 000000000000..953e64fb8ac5
--- /dev/null
+++ b/include/linux/mtd/doc2000.h
@@ -0,0 +1,195 @@
+/* 
+ * Linux driver for Disk-On-Chip devices
+ *
+ * Copyright (C) 1999 Machine Vision Holdings, Inc.   
+ * Copyright (C) 2001-2003 David Woodhouse <dwmw2@infradead.org>
+ * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com>
+ * Copyright (C) 2002-2003 SnapGear Inc
+ *
+ * $Id: doc2000.h,v 1.24 2005/01/05 12:40:38 dwmw2 Exp $ 
+ *
+ * Released under GPL
+ */
+
+#ifndef __MTD_DOC2000_H__
+#define __MTD_DOC2000_H__
+
+#include <linux/mtd/mtd.h>
+#include <asm/semaphore.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__)
+#define ReadDOC_(adr, reg)      ((unsigned char)(*(volatile __u32 *)(((unsigned long)adr)+((reg)<<2))))
+#define WriteDOC_(d, adr, reg)  do{ *(volatile __u32 *)(((unsigned long)adr)+((reg)<<2)) = (__u32)d; wmb();} while(0)
+#define DOC_IOREMAP_LEN 0x8000
+#elif defined(__ppc__)
+#define ReadDOC_(adr, reg)      ((unsigned char)(*(volatile __u16 *)(((unsigned long)adr)+((reg)<<1))))
+#define WriteDOC_(d, adr, reg)  do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
+#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 semaphore lock;
+};
+
+int doc_decode_ecc(unsigned char sector[512], unsigned char ecc1[6]);
+
+#endif /* __MTD_DOC2000_H__ */