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 <[e-mail]>
Tested-by: Lorenzo Pieralisi <[e-mail]>
Signed-off-by: Robin Murphy <[e-mail]>
Signed-off-by: Will Deacon <[e-mail]>

drivers/iommu/arm-smmu-v3.c

···
 		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);

drivers/iommu/arm-smmu.c

···
 
 	/* 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);