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Subject[PATCH] omap:iommu-added cache flushing operation for L2 cache
Date
From: Ramesh Gupta <grgupta@ti.com>

Signed-off-by: Ramesh Gupta <grgupta@ti.com>
Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
---
arch/arm/plat-omap/iommu.c | 22 ++++++++--------------
1 files changed, 8 insertions(+), 14 deletions(-)

diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
index e3eb038..aeb2c33 100644
--- a/arch/arm/plat-omap/iommu.c
+++ b/arch/arm/plat-omap/iommu.c
@@ -471,22 +471,15 @@ EXPORT_SYMBOL_GPL(foreach_iommu_device);
*/
static void flush_iopgd_range(u32 *first, u32 *last)
{
- /* FIXME: L2 cache should be taken care of if it exists */
- do {
- asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pgd"
- : : "r" (first));
- first += L1_CACHE_BYTES / sizeof(*first);
- } while (first <= last);
+ dmac_flush_range(first, last);
+ outer_flush_range(virt_to_phys(first), virt_to_phys(last));
}

+
static void flush_iopte_range(u32 *first, u32 *last)
{
- /* FIXME: L2 cache should be taken care of if it exists */
- do {
- asm("mcr p15, 0, %0, c7, c10, 1 @ flush_pte"
- : : "r" (first));
- first += L1_CACHE_BYTES / sizeof(*first);
- } while (first <= last);
+ dmac_flush_range(first, last);
+ outer_flush_range(virt_to_phys(first), virt_to_phys(last));
}

static void iopte_free(u32 *iopte)
@@ -750,7 +743,7 @@ size_t iopgtable_clear_entry(struct iommu *obj, u32 da)
}
EXPORT_SYMBOL_GPL(iopgtable_clear_entry);

-static void iopgtable_clear_entry_all(struct iommu *obj)
+void iopgtable_clear_entry_all(struct iommu *obj)
{
int i;

@@ -777,7 +770,7 @@ static void iopgtable_clear_entry_all(struct iommu *obj)

spin_unlock(&obj->page_table_lock);
}
-
+EXPORT_SYMBOL_GPL(iopgtable_clear_entry_all);
/*
* Device IOMMU generic operations
*/
@@ -1068,6 +1061,7 @@ static void iopte_cachep_ctor(void *iopte)
clean_dcache_area(iopte, IOPTE_TABLE_SIZE);
}

+
static int __init omap_iommu_init(void)
{
struct kmem_cache *p;
--
1.7.0.4


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