[MTD] NAND Replace oobinfo by ecclayout
The nand_oobinfo structure is not fitting the newer error correction
demands anymore. Replace it by struct nand_ecclayout and fixup the users
all over the place. Keep the nand_oobinfo based ioctl for user space
compability reasons.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/linux/mtd/inftl.h b/include/linux/mtd/inftl.h
index d7eaa40..6977780 100644
--- a/include/linux/mtd/inftl.h
+++ b/include/linux/mtd/inftl.h
@@ -46,7 +46,7 @@
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
- struct nand_oobinfo oobinfo;
+ struct nand_ecclayout oobinfo;
};
int INFTL_mount(struct INFTLrecord *s);
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 8429da5..48a9df2 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -101,8 +101,8 @@
char *name;
int index;
- /* oobinfo structure pointer - read only ! */
- struct nand_oobinfo *oobinfo;
+ /* ecc layout structure pointer - read only ! */
+ struct nand_ecclayout *ecclayout;
/* Data for variable erase regions. If numeraseregions is zero,
* it means that the whole device has erasesize as given above.
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index fd46bcf..dc2bf1b 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -244,6 +244,7 @@
int total;
int prepad;
int postpad;
+ struct nand_ecclayout *layout;
void (*hwctl)(struct mtd_info *mtd, int mode);
int (*calculate)(struct mtd_info *mtd,
const uint8_t *dat,
@@ -318,7 +319,7 @@
* @chipsize: [INTERN] the size of one chip for multichip arrays
* @pagemask: [INTERN] page number mask = number of (pages / chip) - 1
* @pagebuf: [INTERN] holds the pagenumber which is currently in data_buf
- * @autooob: [REPLACEABLE] the default (auto)placement scheme
+ * @ecclayout: [REPLACEABLE] the default ecc placement scheme
* @bbt: [INTERN] bad block table pointer
* @bbt_td: [REPLACEABLE] bad block table descriptor for flash lookup
* @bbt_md: [REPLACEABLE] bad block table mirror descriptor
@@ -368,7 +369,7 @@
uint8_t *oob_poi;
struct nand_hw_control *controller;
- struct nand_oobinfo *autooob;
+ struct nand_ecclayout *ecclayout;
struct nand_ecc_ctrl ecc;
struct nand_buffers buffers;
@@ -522,7 +523,7 @@
* @partitions: mtd partition list
* @chip_delay: R/B delay value in us
* @options: Option flags, e.g. 16bit buswidth
- * @oobinfo: oob info structure (ecc placement)
+ * @ecclayout: ecc layout info structure
* @priv: hardware controller specific settings
*/
struct platform_nand_chip {
@@ -530,7 +531,7 @@
int chip_offset;
int nr_partitions;
struct mtd_partition *partitions;
- struct nand_oobinfo *oobinfo;
+ struct nand_ecclayout *ecclayout;
int chip_delay;
unsigned int options;
void *priv;
diff --git a/include/linux/mtd/nftl.h b/include/linux/mtd/nftl.h
index d35d2c2..bcf2fb3f 100644
--- a/include/linux/mtd/nftl.h
+++ b/include/linux/mtd/nftl.h
@@ -37,7 +37,7 @@
unsigned int nb_blocks; /* number of physical blocks */
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
struct erase_info instr;
- struct nand_oobinfo oobinfo;
+ struct nand_ecclayout oobinfo;
};
int NFTL_mount(struct NFTLrecord *s);
diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h
index 3f5919f..9ce9a48 100644
--- a/include/linux/mtd/onenand.h
+++ b/include/linux/mtd/onenand.h
@@ -77,7 +77,7 @@
* @param chip_lock [INTERN] spinlock used to protect access to this structure and the chip
* @param wq [INTERN] wait queue to sleep on if a OneNAND operation is in progress
* @param state [INTERN] the current state of the OneNAND device
- * @param autooob [REPLACEABLE] the default (auto)placement scheme
+ * @param ecclayout [REPLACEABLE] the default ecc placement scheme
* @param bbm [REPLACEABLE] pointer to Bad Block Management
* @param priv [OPTIONAL] pointer to private chip date
*/
@@ -113,9 +113,9 @@
onenand_state_t state;
unsigned char *page_buf;
- struct nand_oobinfo *autooob;
+ struct nand_ecclayout *ecclayout;
- void *bbm;
+ void *bbm;
void *priv;
};
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index b03f512..da6b3d6 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -41,7 +41,7 @@
u_int32_t size; /* partition size */
u_int32_t offset; /* offset within the master MTD space */
u_int32_t mask_flags; /* master MTD flags to mask out for this partition */
- struct nand_oobinfo *oobsel; /* out of band layout for this partition (NAND only)*/
+ struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only)*/
struct mtd_info **mtdp; /* pointer to store the MTD object */
};
diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 1e09e4c..54c673f 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -82,12 +82,12 @@
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 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)
@@ -97,8 +97,13 @@
#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 OTPLOCK _IOR('M', 16, struct otp_info)
+#define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
+/*
+ * Obsolete legacy interface. Keep it in order not to break userspace
+ * interfaces
+ */
struct nand_oobinfo {
uint32_t useecc;
uint32_t eccbytes;
@@ -106,4 +111,21 @@
uint32_t eccpos[32];
};
+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];
+};
+
#endif /* __MTD_ABI_H__ */
diff --git a/include/mtd/mtd-user.h b/include/mtd/mtd-user.h
index 1c13fc7..713f34d 100644
--- a/include/mtd/mtd-user.h
+++ b/include/mtd/mtd-user.h
@@ -16,5 +16,6 @@
typedef struct erase_info_user erase_info_t;
typedef struct region_info_user region_info_t;
typedef struct nand_oobinfo nand_oobinfo_t;
+typedef struct nand_ecclayout nand_ecclayout_t;
#endif /* __MTD_USER_H__ */