1 files changed, 23 insertions, 13 deletions

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index c50c3f3927d9..e95d0463a3e5 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,5 +1,5 @@
-/* 
- * $Id: mtd.h,v 1.59 2005/04/11 10:19:02 gleixner Exp $
+/*
+ * $Id: mtd.h,v 1.61 2005/11/07 11:14:54 gleixner Exp $
  *
  * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
  *
@@ -72,7 +72,17 @@ struct mtd_info {
         u_int32_t oobsize;   // Amount of OOB data per block (e.g. 16)
         u_int32_t ecctype;
         u_int32_t eccsize;
-        
+
+        /*
+         * Reuse some of the above unused fields in the case of NOR flash
+         * with configurable programming regions to avoid modifying the
+         * user visible structure layout/size.  Only valid when the
+         * MTD_PROGRAM_REGIONS flag is set.
+         * (Maybe we should have an union for those?)
+         */
+#define MTD_PROGREGION_SIZE(mtd)  (mtd)->oobblock
+#define MTD_PROGREGION_CTRLMODE_VALID(mtd)  (mtd)->oobsize
+#define MTD_PROGREGION_CTRLMODE_INVALID(mtd)  (mtd)->ecctype
 
         // Kernel-only stuff starts here.
         char *name;
@@ -80,13 +90,13 @@ struct mtd_info {
 
         // oobinfo is a nand_oobinfo structure, which can be set by iotcl (MEMSETOOBINFO)
         struct nand_oobinfo oobinfo;
-        u_int32_t oobavail;  // Number of bytes in OOB area available for fs 
+        u_int32_t oobavail;  // Number of bytes in OOB area available for fs
 
         /* Data for variable erase regions. If numeraseregions is zero,
-         * it means that the whole device has erasesize as given above. 
+         * it means that the whole device has erasesize as given above.
          */
         int numeraseregions;
-        struct mtd_erase_region_info *eraseregions; 
+        struct mtd_erase_region_info *eraseregions;
 
         /* This really shouldn't be here. It can go away in 2.5 */
         u_int32_t bank_size;
@@ -109,10 +119,10 @@ struct mtd_info {
         int (*read_oob) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
         int (*write_oob) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
 
-        /* 
-         * Methods to access the protection register area, present in some 
+        /*
+         * Methods to access the protection register area, present in some
          * flash devices. The user data is one time programmable but the
-         * factory data is read only. 
+         * factory data is read only.
          */
         int (*get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
         int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
@@ -123,14 +133,14 @@ struct mtd_info {
 
         /* kvec-based read/write methods. We need these especially for NAND flash,
            with its limited number of write cycles per erase.
-           NB: The 'count' parameter is the number of _vectors_, each of 
+           NB: The 'count' parameter is the number of _vectors_, each of
            which contains an (ofs, len) tuple.
         */
         int (*readv) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, size_t *retlen);
-        int (*readv_ecc) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from, 
+        int (*readv_ecc) (struct mtd_info *mtd, struct kvec *vecs, unsigned long count, loff_t from,
                 size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
         int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
-        int (*writev_ecc) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, 
+        int (*writev_ecc) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to,
                 size_t *retlen, u_char *eccbuf, struct nand_oobinfo *oobsel);
 
         /* Sync */
@@ -194,7 +204,7 @@ int default_mtd_readv(struct mtd_info *mtd, struct kvec *vecs,
 #define MTD_WRITEECC(mtd, args...) (*(mtd->write_ecc))(mtd, args)
 #define MTD_READOOB(mtd, args...) (*(mtd->read_oob))(mtd, args)
 #define MTD_WRITEOOB(mtd, args...) (*(mtd->write_oob))(mtd, args)
-#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd);  } while (0) 
+#define MTD_SYNC(mtd) do { if (mtd->sync) (*(mtd->sync))(mtd);  } while (0)
 
 
 #ifdef CONFIG_MTD_PARTITIONS