[MTD] Support for protection register support on Intel FLASH chips
This enables support for reading, writing and locking so called
"Protection Registers" present on some flash chips.
A subset of them are pre-programmed at the factory with a
unique set of values. The rest is user-programmable.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index d87dc3f..7625547 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 1.51 2005/02/05 02:06:16 nico Exp $
+ * $Id: cfi.h,v 1.52 2005/02/08 17:11:15 nico Exp $
*/
#ifndef __MTD_CFI_H__
@@ -252,7 +252,7 @@
* It looks too long to be inline, but in the common case it should almost all
* get optimised away.
*/
-static inline map_word cfi_build_cmd(u_char cmd, struct map_info *map, struct cfi_private *cfi)
+static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cfi_private *cfi)
{
map_word val = { {0} };
int wordwidth, words_per_bus, chip_mode, chips_per_word;
diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h
index c66ba81..e778a1a 100644
--- a/include/linux/mtd/flashchip.h
+++ b/include/linux/mtd/flashchip.h
@@ -6,7 +6,7 @@
*
* (C) 2000 Red Hat. GPLd.
*
- * $Id: flashchip.h,v 1.15 2004/11/05 22:41:06 nico Exp $
+ * $Id: flashchip.h,v 1.16 2005/02/08 17:11:15 nico Exp $
*
*/
@@ -29,6 +29,7 @@
FL_ERASE_SUSPENDED,
FL_WRITING,
FL_WRITING_TO_BUFFER,
+ FL_OTP_WRITE,
FL_WRITE_SUSPENDING,
FL_WRITE_SUSPENDED,
FL_PM_SUSPENDED,
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index f0268b9..8fc6679 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -1,6 +1,6 @@
/* Overhauled routines for dealing with different mmap regions of flash */
-/* $Id: map.h,v 1.46 2005/01/05 17:09:44 dwmw2 Exp $ */
+/* $Id: map.h,v 1.47 2005/02/08 17:11:15 nico Exp $ */
#ifndef __LINUX_MTD_MAP_H__
#define __LINUX_MTD_MAP_H__
@@ -263,6 +263,17 @@
return r;
}
+static inline map_word map_word_clr(struct map_info *map, map_word val1, map_word val2)
+{
+ map_word r;
+ int i;
+
+ for (i=0; i<map_words(map); i++) {
+ r.x[i] = val1.x[i] & ~val2.x[i];
+ }
+ return r;
+}
+
static inline map_word map_word_or(struct map_info *map, map_word val1, map_word val2)
{
map_word r;
@@ -273,6 +284,7 @@
}
return r;
}
+
#define map_word_andequal(m, a, b, z) map_word_equal(m, z, map_word_and(m, a, b))
static inline int map_word_bitsset(struct map_info *map, map_word val1, map_word val2)
@@ -338,6 +350,7 @@
}
return r;
}
+
static inline map_word inline_map_read(struct map_info *map, unsigned long ofs)
{
map_word r;
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index b3d1343..3aab1b8 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,5 +1,5 @@
/*
- * $Id: mtd.h,v 1.56 2004/08/09 18:46:04 dmarlin Exp $
+ * $Id: mtd.h,v 1.57 2005/02/08 17:11:15 nico Exp $
*
* Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
*
@@ -113,12 +113,12 @@
* flash devices. The user data is one time programmable but the
* factory data is read only.
*/
- int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
-
+ 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);
-
- /* This function is not yet implemented */
+ int (*get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf, size_t len);
+ int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+ int (*lock_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len);
/* kvec-based read/write methods. We need these especially for NAND flash,
with its limited number of write cycles per erase.