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| author | Mitchel Humpherys <mitchelh@codeaurora.org> | 2014-11-12 15:11:33 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:11:23 -0700 |
| commit | b6491279cf85fd32642b93e8a8627f3e3daa77ae (patch) | |
| tree | 14c1f36031a6222c9d828b59e176fe11a3ac8140 | |
| parent | cc4f1763f08b782b170c23a1cf5bd40b2ef952be (diff) | |
iommu/arm-smmu: implement DOMAIN_ATTR_PT_BASE_ADDR
Some clients need to get the base address of the page table for a given
IOMMU domain. This functionality is provided by the
DOMAIN_ATTR_PT_BASE_ADDR domain attribute. Implement it in the ARM SMMU
driver.
Change-Id: Ibe4b11a6eaf2ca42aec326c764777373cff769cc
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 4ee43038b545..a6f76bd0850f 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1994,6 +1994,9 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, *((int *)data) = !!(smmu_domain->attributes & (1 << DOMAIN_ATTR_COHERENT_HTW_DISABLE)); return 0; + case DOMAIN_ATTR_PT_BASE_ADDR: + *((phys_addr_t *)data) = virt_to_phys(smmu_domain->cfg.pgd); + return 0; default: return -ENODEV; } |