[RFC 11/11] iommu/arm-smmu: Advertise IOMMU_CAP_TRANSLATE_MSI

[Eric Auger]

arm-smmu and arm-smmu-v3 do translate MSI write transactions
emitted by downstream devices. Advertise this property through
the capable operation.

Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
 drivers/iommu/arm-smmu-v3.c | 2 ++
 drivers/iommu/arm-smmu.c    | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index c86ba84..431ba8c 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1375,6 +1375,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
 		return false;
 	case IOMMU_CAP_NOEXEC:
 		return true;
+	case IOMMU_CAP_TRANSLATE_MSI:
+		return true;
 	default:
 		return false;
 	}
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 7af1dd0..b862a1c 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1363,6 +1363,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
 		return false;
 	case IOMMU_CAP_NOEXEC:
 		return true;
+	case IOMMU_CAP_TRANSLATE_MSI:
+		return true;
 	default:
 		return false;
 	}
-- 
1.9.1