[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>

1 files changed, 29 insertions, 7 deletions

diff --git a/include/mtd/mtd-abi.h b/include/mtd/mtd-abi.h
index 1e09e4c8f485..54c673f9648d 100644
--- a/include/mtd/mtd-abi.h
+++ b/include/mtd/mtd-abi.h
@@ -82,12 +82,12 @@ struct otp_info {
         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 @@ struct otp_info {
 #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 @@ struct nand_oobinfo {
         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__ */