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authorGabor Juhos <juhosg@openwrt.org>2009-06-06 15:56:03 +0000
committerGabor Juhos <juhosg@openwrt.org>2009-06-06 15:56:03 +0000
commit67ace05bfe7ed200894ee65683695196927c72a9 (patch)
tree2dd5d3339364302f9bbec05a55e6080cc83e92eb /target/linux
parent9668bbeea98d82bdf1b9c4e38d0127cc42009615 (diff)
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update flash locking code
SVN-Revision: 16359
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c12
-rw-r--r--target/linux/ar71xx/files/arch/mips/ar71xx/mach-ap83.c2
-rw-r--r--target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h1
-rw-r--r--target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h1
-rw-r--r--target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c46
5 files changed, 48 insertions, 14 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c b/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c
index ea7ae143bd..a13c928125 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c
@@ -17,7 +17,6 @@
#include <asm/mach-ar71xx/ar71xx.h>
static DEFINE_MUTEX(ar71xx_flash_mutex);
-static int ar71xx_flash_lock_enabled;
void __iomem *ar71xx_ddr_base;
EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
@@ -102,21 +101,14 @@ void ar71xx_ddr_flush(u32 reg)
}
EXPORT_SYMBOL_GPL(ar71xx_ddr_flush);
-void __init ar71xx_flash_lock_enable(void)
-{
- ar71xx_flash_lock_enabled = 1;
-}
-
void ar71xx_flash_acquire(void)
{
- if (ar71xx_flash_lock_enabled)
- mutex_lock(&ar71xx_flash_mutex);
+ mutex_lock(&ar71xx_flash_mutex);
}
EXPORT_SYMBOL_GPL(ar71xx_flash_acquire);
void ar71xx_flash_release(void)
{
- if (ar71xx_flash_lock_enabled)
- mutex_unlock(&ar71xx_flash_mutex);
+ mutex_unlock(&ar71xx_flash_mutex);
}
EXPORT_SYMBOL_GPL(ar71xx_flash_release);
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-ap83.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-ap83.c
index c88f68a41f..8564b01a62 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-ap83.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-ap83.c
@@ -221,7 +221,7 @@ static void __init ap83_generic_setup(void)
static void __init ap83_040_setup(void)
{
- ar71xx_flash_lock_enable();
+ ap83_flash_data.is_shared=1;
ap83_generic_setup();
platform_device_register(&ap83_040_spi_device);
}
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
index 19a546e56e..51afcecb52 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
@@ -422,7 +422,6 @@ void ar71xx_device_start(u32 mask);
#define SPI_IOC_CS2 SPI_IOC_CS(2)
#define SPI_IOC_CS_ALL (SPI_IOC_CS0 | SPI_IOC_CS1 | SPI_IOC_CS2)
-void ar71xx_flash_lock_enable(void) __init;
void ar71xx_flash_acquire(void);
void ar71xx_flash_release(void);
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
index b008abd8d3..5644fc956b 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
@@ -55,6 +55,7 @@ struct ar71xx_spi_platform_data {
struct ar91xx_flash_platform_data {
unsigned int width;
+ u8 is_shared:1;
#ifdef CONFIG_MTD_PARTITIONS
unsigned int nr_parts;
struct mtd_partition *parts;
diff --git a/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c b/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c
index e83a1477f0..7ee831c12d 100644
--- a/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c
+++ b/target/linux/ar71xx/files/drivers/mtd/maps/ar91xx_flash.c
@@ -60,6 +60,41 @@ static void ar91xx_flash_write(struct map_info *map, map_word d,
mb();
}
+static map_word ar91xx_flash_read_lock(struct map_info *map, unsigned long ofs)
+{
+ map_word ret;
+
+ ar71xx_flash_acquire();
+ ret = ar91xx_flash_read(map, ofs);
+ ar71xx_flash_release();
+
+ return ret;
+}
+
+static void ar91xx_flash_write_lock(struct map_info *map, map_word d,
+ unsigned long ofs)
+{
+ ar71xx_flash_acquire();
+ ar91xx_flash_write(map, d, ofs);
+ ar71xx_flash_release();
+}
+
+static void ar91xx_flash_copy_from_lock(struct map_info *map, void *to,
+ unsigned long from, ssize_t len)
+{
+ ar71xx_flash_acquire();
+ inline_map_copy_from(map, to, from, len);
+ ar71xx_flash_release();
+}
+
+static void ar91xx_flash_copy_to_lock(struct map_info *map, unsigned long to,
+ const void *from, ssize_t len)
+{
+ ar71xx_flash_acquire();
+ inline_map_copy_to(map, to, from, len);
+ ar71xx_flash_release();
+}
+
static int ar91xx_flash_remove(struct platform_device *pdev)
{
struct ar91xx_flash_platform_data *pdata;
@@ -152,8 +187,15 @@ static int ar91xx_flash_probe(struct platform_device *pdev)
}
simple_map_init(&info->map);
- info->map.read = ar91xx_flash_read;
- info->map.write = ar91xx_flash_write;
+ if (pdata->is_shared) {
+ info->map.read = ar91xx_flash_read_lock;
+ info->map.write = ar91xx_flash_write_lock;
+ info->map.copy_from = ar91xx_flash_copy_from_lock;
+ info->map.copy_to = ar91xx_flash_copy_to_lock;
+ } else {
+ info->map.read = ar91xx_flash_read;
+ info->map.write = ar91xx_flash_write;
+ }
probe_type = rom_probe_types;
for (; info->mtd == NULL && *probe_type != NULL; probe_type++)