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| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-04-11 14:12:11 -0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-04-18 15:32:38 +0100 |
| commit | d75d7dc26f29141fe31167c5414605d4087f0abb (patch) | |
| tree | 0096a289140a89733bae42edb1e99b78ec6bc364 | |
| parent | e8e4398d53f98be7ac48e0bda9ea6e26df24136d (diff) | |
| download | linux-stable-d75d7dc26f29141fe31167c5414605d4087f0abb.tar.gz linux-stable-d75d7dc26f29141fe31167c5414605d4087f0abb.tar.bz2 linux-stable-d75d7dc26f29141fe31167c5414605d4087f0abb.zip | |
iommu/arm-smmu: Convert to domain_alloc_paging()
Now that the BLOCKED and IDENTITY behaviors are managed with their own
domains change to the domain_alloc_paging() op.
The check for using_legacy_binding is now redundant,
arm_smmu_def_domain_type() always returns IOMMU_DOMAIN_IDENTITY for this
mode, so the core code will never attempt to create a DMA domain in the
first place.
Since commit a4fdd9762272 ("iommu: Use flush queue capability") the core
code only passes in IDENTITY/BLOCKED/UNMANAGED/DMA domain types. It will
not pass in IDENTITY or BLOCKED if the global statics exist, so the test
for DMA is also redundant now too.
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/0-v1-3632c65678e0+2f1-smmu_alloc_paging_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/iommu/arm/arm-smmu/arm-smmu.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index c572d877b0e1..5935f44e1d1d 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -859,14 +859,10 @@ static void arm_smmu_destroy_domain_context(struct arm_smmu_domain *smmu_domain) arm_smmu_rpm_put(smmu); } -static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) +static struct iommu_domain *arm_smmu_domain_alloc_paging(struct device *dev) { struct arm_smmu_domain *smmu_domain; - if (type != IOMMU_DOMAIN_UNMANAGED) { - if (using_legacy_binding || type != IOMMU_DOMAIN_DMA) - return NULL; - } /* * Allocate the domain and initialise some of its data structures. * We can't really do anything meaningful until we've added a @@ -1596,7 +1592,7 @@ static struct iommu_ops arm_smmu_ops = { .identity_domain = &arm_smmu_identity_domain, .blocked_domain = &arm_smmu_blocked_domain, .capable = arm_smmu_capable, - .domain_alloc = arm_smmu_domain_alloc, + .domain_alloc_paging = arm_smmu_domain_alloc_paging, .probe_device = arm_smmu_probe_device, .release_device = arm_smmu_release_device, .probe_finalize = arm_smmu_probe_finalize, |