evie/android_kernel_oneplus_msm8998
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Merge "Revert "msm: smmu: add re-route calling for specified iova.""

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Linux Build Service Account 2017-06-08 19:03:20 -07:00 • committed by Gerrit - the friendly Code Review server
commit 16fcfea171
1 changed files with 13 additions and 41 deletions
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54
drivers/gpu/drm/msm/msm_smmu.c
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@ -120,30 +120,16 @@ static int msm_smmu_map(struct msm_mmu *mmu, uint64_t iova,
{
struct msm_smmu *smmu = to_msm_smmu(mmu);
struct msm_smmu_client *client = msm_smmu_to_client(smmu);
struct iommu_domain *domain;
int ret;
if (!client || !sgt)
return -EINVAL;
if (priv)
ret = msm_dma_map_sg_lazy(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL, priv);
else
ret = dma_map_sg(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL);
if (iova != 0) {
if (!client->mmu_mapping || !client->mmu_mapping->domain)
return -EINVAL;
domain = client->mmu_mapping->domain;
return iommu_map_sg(domain, iova, sgt->sgl,
sgt->nents, flags);
} else {
if (priv)
ret = msm_dma_map_sg_lazy(client->dev, sgt->sgl,
sgt->nents, DMA_BIDIRECTIONAL, priv);
else
ret = dma_map_sg(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL);
return (ret != sgt->nents) ? -ENOMEM : 0;
}
return (ret != sgt->nents) ? -ENOMEM : 0;
}
static void msm_smmu_unmap(struct msm_mmu *mmu, uint64_t iova,
@ -151,27 +137,13 @@ static void msm_smmu_unmap(struct msm_mmu *mmu, uint64_t iova,
{
struct msm_smmu *smmu = to_msm_smmu(mmu);
struct msm_smmu_client *client = msm_smmu_to_client(smmu);
struct iommu_domain *domain = client->mmu_mapping->domain;
struct scatterlist *sg;
size_t len = 0;
int unmapped, i = 0;
if (iova != 0) {
for_each_sg(sgt->sgl, sg, sgt->nents, i)
len += sg->length;
unmapped = iommu_unmap(domain, iova, len);
if (unmapped < len)
dev_warn(mmu->dev,
"could not unmap iova@%llx\n", iova);
} else {
if (priv)
msm_dma_unmap_sg(client->dev, sgt->sgl,
sgt->nents, DMA_BIDIRECTIONAL, priv);
else
dma_unmap_sg(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL);
}
if (priv)
msm_dma_unmap_sg(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL, priv);
else
dma_unmap_sg(client->dev, sgt->sgl, sgt->nents,
DMA_BIDIRECTIONAL);
}
static void msm_smmu_destroy(struct msm_mmu *mmu)