This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / mtd / mtd-abi.h

diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
new file mode 100644 (file)
index 0000000..db5fca2
--- /dev/null
+++ b/include/mtd/mtd-abi.h
@@ -0,0 +1,97 @@
+/*
+ * $Id: mtd-abi.h,v 1.5 2004/06/22 09:29:35 gleixner Exp $
+ *
+ * Portions of MTD ABI definition which are shared by kernel and user space 
+ */
+
+#ifndef __MTD_ABI_H__
+#define __MTD_ABI_H__
+
+struct erase_info_user {
+       uint32_t start;
+       uint32_t length;
+};
+
+struct mtd_oob_buf {
+       uint32_t start;
+       uint32_t length;
+       unsigned char *ptr;
+};
+
+#define MTD_ABSENT             0
+#define MTD_RAM                        1
+#define MTD_ROM                        2
+#define MTD_NORFLASH           3
+#define MTD_NANDFLASH          4
+#define MTD_PEROM              5
+#define MTD_OTHER              14
+#define MTD_UNKNOWN            15
+
+#define MTD_CLEAR_BITS         1       // Bits can be cleared (flash)
+#define MTD_SET_BITS           2       // Bits can be set
+#define MTD_ERASEABLE          4       // Has an erase function
+#define MTD_WRITEB_WRITEABLE   8       // Direct IO is possible
+#define MTD_VOLATILE           16      // Set for RAMs
+#define MTD_XIP                        32      // eXecute-In-Place possible
+#define MTD_OOB                        64      // Out-of-band data (NAND flash)
+#define MTD_ECC                        128     // Device capable of automatic ECC
+
+// Some common devices / combinations of capabilities
+#define MTD_CAP_ROM            0
+#define MTD_CAP_RAM            (MTD_CLEAR_BITS|MTD_SET_BITS|MTD_WRITEB_WRITEABLE)
+#define MTD_CAP_NORFLASH        (MTD_CLEAR_BITS|MTD_ERASEABLE)
+#define MTD_CAP_NANDFLASH       (MTD_CLEAR_BITS|MTD_ERASEABLE|MTD_OOB)
+#define MTD_WRITEABLE          (MTD_CLEAR_BITS|MTD_SET_BITS)
+
+
+// Types of automatic ECC/Checksum available
+#define MTD_ECC_NONE           0       // No automatic ECC available
+#define MTD_ECC_RS_DiskOnChip  1       // Automatic ECC on DiskOnChip
+#define MTD_ECC_SW             2       // SW ECC for Toshiba & Samsung devices
+
+/* ECC byte placement */
+#define MTD_NANDECC_OFF                0       // Switch off ECC (Not recommended)
+#define MTD_NANDECC_PLACE      1       // Use the given placement in the structure (YAFFS1 legacy mode)
+#define MTD_NANDECC_AUTOPLACE  2       // Use the default placement scheme
+#define MTD_NANDECC_PLACEONLY  3       // Use the given placement in the structure (Do not store ecc result on read)
+
+struct mtd_info_user {
+       uint8_t type;
+       uint32_t flags;
+       uint32_t size;   // Total size of the MTD
+       uint32_t erasesize;
+       uint32_t oobblock;  // Size of OOB blocks (e.g. 512)
+       uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+       uint32_t ecctype;
+       uint32_t eccsize;
+};
+
+struct region_info_user {
+       uint32_t offset;                /* At which this region starts, 
+                                        * from the beginning of the MTD */
+       uint32_t erasesize;             /* For this region */
+       uint32_t numblocks;             /* Number of blocks in this region */
+       uint32_t regionindex;
+};
+
+#define MEMGETINFO              _IOR('M', 1, struct mtd_info_user)
+#define MEMERASE                _IOW('M', 2, struct erase_info_user)
+#define MEMWRITEOOB             _IOWR('M', 3, struct mtd_oob_buf)
+#define MEMREADOOB              _IOWR('M', 4, struct mtd_oob_buf)
+#define MEMLOCK                 _IOW('M', 5, struct erase_info_user)
+#define MEMUNLOCK               _IOW('M', 6, struct erase_info_user)
+#define MEMGETREGIONCOUNT      _IOR('M', 7, int)
+#define MEMGETREGIONINFO       _IOWR('M', 8, struct region_info_user)
+#define MEMSETOOBSEL           _IOW('M', 9, struct nand_oobinfo)
+#define MEMGETOOBSEL           _IOR('M', 10, struct nand_oobinfo)
+#define MEMGETBADBLOCK         _IOW('M', 11, loff_t)
+#define MEMSETBADBLOCK         _IOW('M', 12, loff_t)
+
+struct nand_oobinfo {
+       uint32_t useecc;
+       uint32_t eccbytes;
+       uint32_t oobfree[8][2];
+       uint32_t eccpos[32];
+};
+
+#endif /* __MTD_ABI_H__ */