summaryrefslogtreecommitdiff
path: root/drivers/iommu/tegra-gart.c
diff options
context:
space:
mode:
authorYong Wu <yong.wu@mediatek.com>2021-01-07 15:29:04 +0300
committerWill Deacon <will@kernel.org>2021-01-27 15:32:26 +0300
commit2ebbd25873cef06f739489fd8ff9f707a3dfa2fa (patch)
tree1740375c71f22f2ccb80fc1713d86e641f5bbe5f /drivers/iommu/tegra-gart.c
parentd8c1df02ac7f2c802a9b2afc0f5c888c4217f1d5 (diff)
downloadlinux-2ebbd25873cef06f739489fd8ff9f707a3dfa2fa.tar.xz
iommu: Add iova and size as parameters in iotlb_sync_map
iotlb_sync_map allow IOMMU drivers tlb sync after completing the whole mapping. This patch adds iova and size as the parameters in it. then the IOMMU driver could flush tlb with the whole range once after iova mapping to improve performance. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20210107122909.16317-3-yong.wu@mediatek.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/tegra-gart.c')
-rw-r--r--drivers/iommu/tegra-gart.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index fac720273889..05e8e19b8269 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -261,7 +261,8 @@ static int gart_iommu_of_xlate(struct device *dev,
return 0;
}
-static void gart_iommu_sync_map(struct iommu_domain *domain)
+static void gart_iommu_sync_map(struct iommu_domain *domain, unsigned long iova,
+ size_t size)
{
FLUSH_GART_REGS(gart_handle);
}
@@ -269,7 +270,9 @@ static void gart_iommu_sync_map(struct iommu_domain *domain)
static void gart_iommu_sync(struct iommu_domain *domain,
struct iommu_iotlb_gather *gather)
{
- gart_iommu_sync_map(domain);
+ size_t length = gather->end - gather->start;
+
+ gart_iommu_sync_map(domain, gather->start, length);
}
static const struct iommu_ops gart_iommu_ops = {