From 2ebbd25873cef06f739489fd8ff9f707a3dfa2fa Mon Sep 17 00:00:00 2001 From: Yong Wu Date: Thu, 7 Jan 2021 20:29:04 +0800 Subject: 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 Reviewed-by: Robin Murphy Acked-by: Will Deacon Link: https://lore.kernel.org/r/20210107122909.16317-3-yong.wu@mediatek.com Signed-off-by: Will Deacon --- drivers/iommu/tegra-gart.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/iommu/tegra-gart.c') 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 = { -- cgit v1.2.3-70-g09d2