Commit 7839444b authored Feb 17, 2015 by Mitchel Humpherys Committed by Matt Wagantall May 30, 2015

iommu/arm-smmu: avoid using ASID 0



Thulium has a hardware errata that requires that we avoid using ASID 0.
Implement the workaround in the SMMU driver.

Change-Id: Ia44ab1b385450994641c5f5ccb3dba4a462a8033
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent fdd89166

drivers/iommu/arm-smmu.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -474,8 +474,8 @@ struct arm_smmu_cfg {
		};
		#define INVALID_IRPTNDX 0xff

		#define ARM_SMMU_CB_ASID(cfg) ((cfg)->cbndx)
		#define ARM_SMMU_CB_VMID(cfg) ((cfg)->cbndx + 1)
		#define ARM_SMMU_CB_ASID(cfg) ((cfg)->cbndx + 1)
		#define ARM_SMMU_CB_VMID(cfg) ((cfg)->cbndx + 2)

		struct arm_smmu_domain {
		struct arm_smmu_device *smmu;