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Diffstat (limited to 'include/linux/mtd/mtd-abi.h')
-rw-r--r--include/linux/mtd/mtd-abi.h137
1 files changed, 97 insertions, 40 deletions
diff --git a/include/linux/mtd/mtd-abi.h b/include/linux/mtd/mtd-abi.h
index 4cebea959..0ce2099d6 100644
--- a/include/linux/mtd/mtd-abi.h
+++ b/include/linux/mtd/mtd-abi.h
@@ -1,5 +1,5 @@
/*
- * $Id: mtd-abi.h,v 1.7 2004/11/23 15:37:32 gleixner Exp $
+ * $Id: mtd-abi.h,v 1.13 2005/11/07 11:14:56 gleixner Exp $
*
* Portions of MTD ABI definition which are shared by kernel and user space
*/
@@ -7,6 +7,10 @@
#ifndef __MTD_ABI_H__
#define __MTD_ABI_H__
+#if 1
+#include <linux/mtd/compat.h>
+#endif
+
struct erase_info_user {
uint32_t start;
uint32_t length;
@@ -15,7 +19,7 @@ struct erase_info_user {
struct mtd_oob_buf {
uint32_t start;
uint32_t length;
- unsigned char *ptr;
+ unsigned char __user *ptr;
};
#define MTD_ABSENT 0
@@ -23,47 +27,41 @@ struct mtd_oob_buf {
#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 */
-#define MTD_NO_VIRTBLOCKS 256 /* Virtual blocks not allowed */
-
-/* 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)
+#define MTD_DATAFLASH 6
+#define MTD_UBIVOLUME 7
+#define MTD_WRITEABLE 0x400 /* Device is writeable */
+#define MTD_BIT_WRITEABLE 0x800 /* Single bits can be flipped */
+#define MTD_NO_ERASE 0x1000 /* No erase necessary */
+#define MTD_STUPID_LOCK 0x2000 /* Always locked after reset */
-/* 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 */
+// Some common devices / combinations of capabilities
+#define MTD_CAP_ROM 0
+#define MTD_CAP_RAM (MTD_WRITEABLE | MTD_BIT_WRITEABLE | MTD_NO_ERASE)
+#define MTD_CAP_NORFLASH (MTD_WRITEABLE | MTD_BIT_WRITEABLE)
+#define MTD_CAP_NANDFLASH (MTD_WRITEABLE)
/* 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) */
-#define MTD_NANDECC_AUTOPL_USR 4 /* Use the given autoplacement scheme rather than using the default */
+#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)
+#define MTD_NANDECC_AUTOPL_USR 4 // Use the given autoplacement scheme rather than using the default
+
+/* OTP mode selection */
+#define MTD_OTP_OFF 0
+#define MTD_OTP_FACTORY 1
+#define MTD_OTP_USER 2
struct mtd_info_user {
uint8_t type;
uint32_t flags;
- uint32_t size; /* Total size of the MTD */
+ 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 writesize;
+ uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
+ /* The below two fields are obsolete and broken, do not use them
+ * (TODO: remove at some point) */
uint32_t ecctype;
uint32_t eccsize;
};
@@ -76,19 +74,36 @@ struct region_info_user {
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)
+struct otp_info {
+ uint32_t start;
+ uint32_t length;
+ uint32_t locked;
+};
+
+#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)
+#define OTPSELECT _IOR('M', 13, int)
+#define OTPGETREGIONCOUNT _IOW('M', 14, int)
+#define OTPGETREGIONINFO _IOW('M', 15, struct otp_info)
+#define OTPLOCK _IOR('M', 16, struct otp_info)
+#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
+#define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
+#define MTDFILEMODE _IO('M', 19)
+/*
+ * Obsolete legacy interface. Keep it in order not to break userspace
+ * interfaces
+ */
struct nand_oobinfo {
uint32_t useecc;
uint32_t eccbytes;
@@ -96,4 +111,46 @@ struct nand_oobinfo {
uint32_t eccpos[48];
};
+struct nand_oobfree {
+ uint32_t offset;
+ uint32_t length;
+};
+
+#define MTD_MAX_OOBFREE_ENTRIES 8
+/*
+ * ECC layout control structure. Exported to userspace for
+ * diagnosis and to allow creation of raw images
+ */
+struct nand_ecclayout {
+ uint32_t eccbytes;
+ uint32_t eccpos[64];
+ uint32_t oobavail;
+ struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];
+};
+
+/**
+ * struct mtd_ecc_stats - error correction stats
+ *
+ * @corrected: number of corrected bits
+ * @failed: number of uncorrectable errors
+ * @badblocks: number of bad blocks in this partition
+ * @bbtblocks: number of blocks reserved for bad block tables
+ */
+struct mtd_ecc_stats {
+ uint32_t corrected;
+ uint32_t failed;
+ uint32_t badblocks;
+ uint32_t bbtblocks;
+};
+
+/*
+ * Read/write file modes for access to MTD
+ */
+enum mtd_file_modes {
+ MTD_MODE_NORMAL = MTD_OTP_OFF,
+ MTD_MODE_OTP_FACTORY = MTD_OTP_FACTORY,
+ MTD_MODE_OTP_USER = MTD_OTP_USER,
+ MTD_MODE_RAW,
+};
+
#endif /* __MTD_ABI_H__ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 22:57:22 +0000