[PATCH v6 18/20] iommu/arm-smmu: Set domain geometry
From: Robin Murphy <hidden>
Date: 2016-09-06 15:33:51
Also in:
linux-arm-kernel, linux-iommu
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
For non-aperture-based IOMMUs, the domain geometry seems to have become the de-facto way of indicating the input address space size. That is quite a useful thing from the users' perspective, so let's do the same. Reviewed-by: Eric Auger <redacted> Tested-by: Lorenzo Pieralisi <redacted> Signed-off-by: Robin Murphy <redacted> --- drivers/iommu/arm-smmu-v3.c | 2 ++ drivers/iommu/arm-smmu.c | 2 ++ 2 files changed, 4 insertions(+)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 1f350a50b35d..be293b5aa896 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c@@ -1546,6 +1546,8 @@ static int arm_smmu_domain_finalise(struct iommu_domain *domain) return -ENOMEM; domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; + domain->geometry.aperture_end = (1UL << ias) - 1; + domain->geometry.force_aperture = true; smmu_domain->pgtbl_ops = pgtbl_ops; ret = finalise_stage_fn(smmu_domain, &pgtbl_cfg);
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index aaf7d92448a3..2e20cdc362e0 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c@@ -938,6 +938,8 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain, /* Update the domain's page sizes to reflect the page table format */ domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; + domain->geometry.aperture_end = (1UL << ias) - 1; + domain->geometry.force_aperture = true; /* Initialise the context bank with our page table cfg */ arm_smmu_init_context_bank(smmu_domain, &pgtbl_cfg);
--
2.8.1.dirty
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