iommu/arm-smmu: Add getter for DOMAIN_ATTR_SECURE_VMID



It can be useful to query a previously set secure VMID.  Add a domain
attribute getter for this.

Change-Id: Iaf14201d321161ce4ccc69b674a3b1247d6a7e94
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent d0e1cdfd

drivers/iommu/arm-smmu.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -2278,6 +2278,10 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain,
		(1 << DOMAIN_ATTR_COHERENT_HTW_DISABLE));
		ret = 0;
		break;
		case DOMAIN_ATTR_SECURE_VMID:
		((int )data) = smmu_domain->secure_vmid;
		ret = 0;
		break;
		case DOMAIN_ATTR_PT_BASE_ADDR:
		((phys_addr_t )data) =
		smmu_domain->pgtbl_cfg.arm_lpae_s1_cfg.ttbr[0];