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| author | Mitchel Humpherys <mitchelh@codeaurora.org> | 2015-02-17 17:12:24 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:11:41 -0700 |
| commit | fd8292fee2335bb90a1cadbd1ca6875abbdd8515 (patch) | |
| tree | 849a9055ebd492425cd5db8a43c52bee77fabca1 | |
| parent | 64bfe1d2be6fc54957f3a2e7740d045424c76669 (diff) | |
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>
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 75f6ca0877f6..6d8d58056362 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -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; |