diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2017-09-28 17:55:01 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2017-10-02 16:45:25 +0300 |
| commit | 32b124492bdf974f68eaef1bde80dc8058aef002 (patch) | |
| tree | 65e5538efdefea61e632c17112f0e511dd2b7b10 /drivers/iommu/arm-smmu.c | |
| parent | abbb8a09384f69f7bb05936879e51933c146afba (diff) | |
| download | linux-32b124492bdf974f68eaef1bde80dc8058aef002.tar.xz | |
iommu/io-pgtable-arm: 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 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.
CC: Magnus Damm <damm+renesas@opensource.se>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/arm-smmu.c')
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 3bdb799d3b4b..e4a82d70d446 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -250,6 +250,7 @@ enum arm_smmu_domain_stage { struct arm_smmu_domain { struct arm_smmu_device *smmu; struct io_pgtable_ops *pgtbl_ops; + const struct iommu_gather_ops *tlb_ops; struct arm_smmu_cfg cfg; enum arm_smmu_domain_stage stage; struct mutex init_mutex; /* Protects smmu pointer */ @@ -735,7 +736,6 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, enum io_pgtable_fmt fmt; struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); struct arm_smmu_cfg *cfg = &smmu_domain->cfg; - const struct iommu_gather_ops *tlb_ops; mutex_lock(&smmu_domain->init_mutex); if (smmu_domain->smmu) @@ -813,7 +813,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, ias = min(ias, 32UL); oas = min(oas, 32UL); } - tlb_ops = &arm_smmu_s1_tlb_ops; + smmu_domain->tlb_ops = &arm_smmu_s1_tlb_ops; break; case ARM_SMMU_DOMAIN_NESTED: /* @@ -833,9 +833,9 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, oas = min(oas, 40UL); } if (smmu->version == ARM_SMMU_V2) - tlb_ops = &arm_smmu_s2_tlb_ops_v2; + smmu_domain->tlb_ops = &arm_smmu_s2_tlb_ops_v2; else - tlb_ops = &arm_smmu_s2_tlb_ops_v1; + smmu_domain->tlb_ops = &arm_smmu_s2_tlb_ops_v1; break; default: ret = -EINVAL; @@ -863,7 +863,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, .pgsize_bitmap = smmu->pgsize_bitmap, .ias = ias, .oas = oas, - .tlb = tlb_ops, + .tlb = smmu_domain->tlb_ops, .iommu_dev = smmu->dev, }; @@ -1259,6 +1259,14 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova, return ops->unmap(ops, iova, size); } +static void arm_smmu_iotlb_sync(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + + if (smmu_domain->tlb_ops) + smmu_domain->tlb_ops->tlb_sync(smmu_domain); +} + static phys_addr_t arm_smmu_iova_to_phys_hard(struct iommu_domain *domain, dma_addr_t iova) { @@ -1562,6 +1570,8 @@ static struct iommu_ops arm_smmu_ops = { .map = arm_smmu_map, .unmap = arm_smmu_unmap, .map_sg = default_iommu_map_sg, + .flush_iotlb_all = arm_smmu_iotlb_sync, + .iotlb_sync = arm_smmu_iotlb_sync, .iova_to_phys = arm_smmu_iova_to_phys, .add_device = arm_smmu_add_device, .remove_device = arm_smmu_remove_device, |