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iommu/io-pgtable-arm-v7s: Convert to IOMMU API TLB sync

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Now that the core API issues its own post-unmap TLB sync call, push that
operation out from the io-pgtable-arm-v7s internals into the users. For
now, we leave the invalidation implicit in the unmap operation, since
none of the current users would benefit much from any change to that.

Note that the conversion of msm_iommu is implicit, since that apparently
has no specific TLB sync operation anyway.

CC: Yong Wu <yong.wu@mediatek.com>
CC: Rob Clark <robdclark@gmail.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy
2017-09-28 15:55:02 +01:00
committed by Joerg Roedel
parent 32b124492b
commit 4d689b6194
3 changed files with 23 additions and 6 deletions
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7
drivers/iommu/mtk_iommu.c
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@@ -391,6 +391,11 @@ static size_t mtk_iommu_unmap(struct iommu_domain *domain,
return unmapsz;
}
static void mtk_iommu_iotlb_sync(struct iommu_domain *domain)
{
mtk_iommu_tlb_sync(mtk_iommu_get_m4u_data());
}
static phys_addr_t mtk_iommu_iova_to_phys(struct iommu_domain *domain,
dma_addr_t iova)
{
@@ -490,6 +495,8 @@ static struct iommu_ops mtk_iommu_ops = {
.map = mtk_iommu_map,
.unmap = mtk_iommu_unmap,
.map_sg = default_iommu_map_sg,
.flush_iotlb_all = mtk_iommu_iotlb_sync,
.iotlb_sync = mtk_iommu_iotlb_sync,
.iova_to_phys = mtk_iommu_iova_to_phys,
.add_device = mtk_iommu_add_device,
.remove_device = mtk_iommu_remove_device,