Commit bbb624cb authored Nov 12, 2014 by Mitchel Humpherys Committed by Matt Wagantall May 30, 2015

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>

parent d8a36769

drivers/iommu/arm-smmu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}