mtd: Update MTD infrastructure to support 64bit device size
This patch brings the U-Boot MTD infrastructure in sync with the current
Linux MTD version (2.6.30-rc3). Biggest change is the 64bit device size
support and a resync of the mtdpart.c file which has seen multiple fixes
meanwhile.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Kyungmin Park <kmpark@infradead.org>
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 354e3a0..c884567 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -8,6 +8,7 @@
#define __MTD_MTD_H__
#include <linux/types.h>
+#include <div64.h>
#include <linux/mtd/mtd-abi.h>
#define MTD_CHAR_MAJOR 90
@@ -20,6 +21,8 @@
#define MTD_ERASE_DONE 0x08
#define MTD_ERASE_FAILED 0x10
+#define MTD_FAIL_ADDR_UNKNOWN -1LL
+
/*
* Enumeration for NAND/OneNAND flash chip state
*/
@@ -37,13 +40,13 @@
};
/* If the erase fails, fail_addr might indicate exactly which block failed. If
- fail_addr = 0xffffffff, the failure was not at the device level or was not
+ fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not
specific to any particular block. */
struct erase_info {
struct mtd_info *mtd;
- u_int32_t addr;
- u_int32_t len;
- u_int32_t fail_addr;
+ uint64_t addr;
+ uint64_t len;
+ uint64_t fail_addr;
u_long time;
u_long retries;
u_int dev;
@@ -55,7 +58,7 @@
};
struct mtd_erase_region_info {
- u_int32_t offset; /* At which this region starts, from the beginning of the MTD */
+ uint64_t offset; /* At which this region starts, from the beginning of the MTD */
u_int32_t erasesize; /* For this region */
u_int32_t numblocks; /* Number of blocks of erasesize in this region */
unsigned long *lockmap; /* If keeping bitmap of locks */
@@ -110,7 +113,7 @@
struct mtd_info {
u_char type;
u_int32_t flags;
- u_int32_t size; /* Total size of the MTD */
+ uint64_t size; // Total size of the MTD
/* "Major" erase size for the device. Naïve users may take this
* to be the only erase size available, or may use the more detailed
@@ -202,8 +205,8 @@
void (*sync) (struct mtd_info *mtd);
/* Chip-supported device locking */
- int (*lock) (struct mtd_info *mtd, loff_t ofs, size_t len);
- int (*unlock) (struct mtd_info *mtd, loff_t ofs, size_t len);
+ int (*lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+ int (*unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
/* Power Management functions */
int (*suspend) (struct mtd_info *mtd);
@@ -236,6 +239,16 @@
void (*put_device) (struct mtd_info *mtd);
};
+static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+ do_div(sz, mtd->erasesize);
+ return sz;
+}
+
+static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
+{
+ return do_div(sz, mtd->erasesize);
+}
/* Kernel-side ioctl definitions */