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| author |   Robin Murphy <robin.murphy@arm.com> | 2017-09-28 15:55:02 +0100 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2017-10-02 15:45:25 +0200 |
| commit | 4d689b619445894f6b6fcbc496f6d302bd9e44a5 (patch) | |
| tree | 2abc05f9245266f226629c993089b08ae18a988b /drivers/iommu/qcom_iommu.c | |
| parent | iommu/io-pgtable-arm: Convert to IOMMU API TLB sync (diff) | |
| download | linux-dev-4d689b619445894f6b6fcbc496f6d302bd9e44a5.tar.xz linux-dev-4d689b619445894f6b6fcbc496f6d302bd9e44a5.zip | |
iommu/io-pgtable-arm-v7s: Convert to IOMMU API TLB sync
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>
Diffstat (limited to 'drivers/iommu/qcom_iommu.c')
| -rw-r--r-- | drivers/iommu/qcom_iommu.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index c8a587d034b0..4a2c4378b3db 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -443,6 +443,19 @@ static size_t qcom_iommu_unmap(struct iommu_domain *domain, unsigned long iova, return ret; } +static void qcom_iommu_iotlb_sync(struct iommu_domain *domain) +{ + struct qcom_iommu_domain *qcom_domain = to_qcom_iommu_domain(domain); + struct io_pgtable *pgtable = container_of(qcom_domain->pgtbl_ops, + struct io_pgtable, ops); + if (!qcom_domain->pgtbl_ops) + return; + + pm_runtime_get_sync(qcom_domain->iommu->dev); + qcom_iommu_tlb_sync(pgtable->cookie); + pm_runtime_put_sync(qcom_domain->iommu->dev); +} + static phys_addr_t qcom_iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova) { @@ -570,6 +583,8 @@ static const struct iommu_ops qcom_iommu_ops = { .map = qcom_iommu_map, .unmap = qcom_iommu_unmap, .map_sg = default_iommu_map_sg, + .flush_iotlb_all = qcom_iommu_iotlb_sync, + .iotlb_sync = qcom_iommu_iotlb_sync, .iova_to_phys = qcom_iommu_iova_to_phys, .add_device = qcom_iommu_add_device, .remove_device = qcom_iommu_remove_device, |