{MTD] add support for Intel's "Sibley" flash

This updates the Primary Vendor-Specific Extended Query parsing to
version 1.4 in order to get the information about the Configurable
Programming Mode regions implemented in the Sibley flash, as well as
selecting the appropriate write command code.

This flash does not behave like traditional NOR flash when writing data.
While mtdblock should just work, further changes are needed for JFFS2 use.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 23 insertions, 4 deletions

diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index e6b6a1c66bd5..360cf626c288 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -1,7 +1,7 @@
 
 /* Common Flash Interface structures 
  * See http://support.intel.com/design/flash/technote/index.htm
- * $Id: cfi.h,v 1.54 2005/06/06 23:04:36 tpoynor Exp $
+ * $Id: cfi.h,v 1.55 2005/08/06 04:40:42 nico Exp $
  */
 
 #ifndef __MTD_CFI_H__
@@ -173,6 +173,15 @@ struct cfi_intelext_regioninfo {
         struct cfi_intelext_blockinfo BlockTypes[1];
 } __attribute__((packed));
 
+struct cfi_intelext_programming_regioninfo {
+        uint8_t  ProgRegShift;
+        uint8_t  Reserved1;
+        uint8_t  ControlValid;
+        uint8_t  Reserved2;
+        uint8_t  ControlInvalid;
+        uint8_t  Reserved3;
+} __attribute__((packed));
+
 /* Vendor-Specific PRI for AMD/Fujitsu Extended Command Set (0x0002) */
 
 struct cfi_pri_amdstd {
@@ -316,7 +325,7 @@ static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cf
 #define CMD(x)  cfi_build_cmd((x), map, cfi)
 
 
-static inline unsigned char cfi_merge_status(map_word val, struct map_info *map, 
+static inline unsigned long cfi_merge_status(map_word val, struct map_info *map, 
                                            struct cfi_private *cfi)
 {
         int wordwidth, words_per_bus, chip_mode, chips_per_word;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index c50c3f3927d9..ab5804183916 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 1.60 2005/08/06 04:40:42 nico 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;