-/*
- * $Id: mtd.h,v 1.56 2004/08/09 18:46:04 dmarlin Exp $
- *
- * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
- *
- * Released under GPL
- */
+
+/* $Id: mtd.h,v 1.45 2003/05/20 21:56:40 dwmw2 Exp $ */
#ifndef __MTD_MTD_H__
#define __MTD_MTD_H__
-#ifndef __KERNEL__
-#error This is a kernel header. Perhaps include mtd-user.h instead?
-#endif
+#ifdef __KERNEL__
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/uio.h>
-#include <linux/mtd/compatmac.h>
-#include <mtd/mtd-abi.h>
+#endif /* __KERNEL__ */
+
+struct erase_info_user {
+ u_int32_t start;
+ u_int32_t length;
+};
+
+struct mtd_oob_buf {
+ u_int32_t start;
+ u_int32_t length;
+ unsigned char __user *ptr;
+};
#define MTD_CHAR_MAJOR 90
#define MTD_BLOCK_MAJOR 31
#define MAX_MTD_DEVICES 16
+
+
+#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
+
+struct mtd_info_user {
+ u_char type;
+ u_int32_t flags;
+ u_int32_t size; // Total size of the MTD
+ u_int32_t erasesize;
+ u_int32_t oobblock; // Size of OOB blocks (e.g. 512)
+ u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
+ u_int32_t ecctype;
+ u_int32_t eccsize;
+};
+
+struct region_info_user {
+ u_int32_t offset; /* At which this region starts,
+ * from the beginning of the MTD */
+ u_int32_t erasesize; /* For this region */
+ u_int32_t numblocks; /* Number of blocks in this region */
+ u_int32_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)
+
+struct nand_oobinfo {
+ int useecc;
+ int eccpos[6];
+};
+
+
+#ifndef __KERNEL__
+
+typedef struct mtd_info_user mtd_info_t;
+typedef struct erase_info_user erase_info_t;
+typedef struct region_info_user region_info_t;
+typedef struct nand_oobinfo nand_oobinfo_t;
+
+ /* User-space ioctl definitions */
+
+#else /* __KERNEL__ */
+
+
#define MTD_ERASE_PENDING 0x01
#define MTD_ERASING 0x02
#define MTD_ERASE_SUSPEND 0x04
#define MTD_ERASE_DONE 0x08
#define MTD_ERASE_FAILED 0x10
-/* If the erase fails, fail_addr might indicate exactly which block failed. If
- fail_addr = 0xffffffff, the failure was not at the device level or was not
- specific to any particular block. */
struct erase_info {
struct mtd_info *mtd;
u_int32_t addr;
u_int32_t len;
- u_int32_t fail_addr;
u_long time;
u_long retries;
u_int dev;
u_int32_t oobblock; // Size of OOB blocks (e.g. 512)
u_int32_t oobsize; // Amount of OOB data per block (e.g. 16)
- u_int32_t oobavail; // Number of bytes in OOB area available for fs
u_int32_t ecctype;
u_int32_t eccsize;
int (*suspend) (struct mtd_info *mtd);
void (*resume) (struct mtd_info *mtd);
- /* Bad block management functions */
- int (*block_isbad) (struct mtd_info *mtd, loff_t ofs);
- int (*block_markbad) (struct mtd_info *mtd, loff_t ofs);
-
void *priv;
struct module *owner;
#define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args)
#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd); } while (0)
-
-#ifdef CONFIG_MTD_PARTITIONS
-void mtd_erase_callback(struct erase_info *instr);
-#else
-static inline void mtd_erase_callback(struct erase_info *instr)
-{
- if (instr->callback)
- instr->callback(instr);
-}
-#endif
-
/*
* Debugging macro and defines
*/
#endif /* CONFIG_MTD_DEBUG */
+#endif /* __KERNEL__ */
+
#endif /* __MTD_MTD_H__ */
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