summaryrefslogtreecommitdiffstats
path: root/drivers/mtd
diff options
context:
space:
mode:
authorRussell King <rmk+kernel@arm.linux.org.uk>2009-12-17 23:22:23 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-12-17 23:22:23 +0000
commit6665398afafcb1c75d933c1452a9010644aba3e6 (patch)
tree6a6dce2ac7835de25f422330ea224a01eef55635 /drivers/mtd
parentc0caac93f873cd3402b63246bf94d904afc4f5fd (diff)
parentbf32eb85492af197ea5ff20e0be56f667a80584d (diff)
downloadop-kernel-dev-6665398afafcb1c75d933c1452a9010644aba3e6.zip
op-kernel-dev-6665398afafcb1c75d933c1452a9010644aba3e6.tar.gz
Merge branch 'cache' (early part)
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/maps/pxa2xx-flash.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 74fa075..b13f641 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -20,14 +20,23 @@
#include <asm/io.h>
#include <mach/hardware.h>
-#include <asm/cacheflush.h>
#include <asm/mach/flash.h>
+#define CACHELINESIZE 32
+
static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
ssize_t len)
{
- flush_ioremap_region(map->phys, map->cached, from, len);
+ unsigned long start = (unsigned long)map->cached + from;
+ unsigned long end = start + len;
+
+ start &= ~(CACHELINESIZE - 1);
+ while (start < end) {
+ /* invalidate D cache line */
+ asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start));
+ start += CACHELINESIZE;
+ }
}
struct pxa2xx_flash_info {
OpenPOWER on IntegriCloud