From 455eb7d34ad11b09490f70c33973f9f3e31c4df6 Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Mon, 12 Sep 2016 17:13:58 +0100 Subject: [PATCH] iommu/arm-smmu: Set domain geometry 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 Tested-by: Lorenzo Pieralisi Signed-off-by: Robin Murphy Signed-off-by: Will Deacon --- 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 0c45c1e02e04..15c01c3cd540 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1551,6 +1551,8 @@ 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 fd6cc19c4ced..c841eb7a1a74 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -939,6 +939,8 @@ 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); -- 2.45.2