The bind_guest_msi() callback checks the domain
is NESTED and redirect to the dma-iommu implementation.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
drivers/iommu/arm-smmu-v3.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index e4c7ae8..ccd55d3 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -2025,6 +2025,21 @@ static void arm_smmu_put_resv_regions(struct device *dev,
kfree(entry);
}
+static int arm_smmu_bind_guest_msi(struct iommu_domain *domain,
+ struct iommu_guest_msi_binding *binding)
+{
+ struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct arm_smmu_device *smmu = smmu_domain->smmu;
+
+ if (!smmu)
+ return -EINVAL;
+
+ if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
+ return -EINVAL;
+
+ return iommu_dma_bind_doorbell(domain, binding);
+}
+
static int arm_smmu_bind_guest_stage(struct iommu_domain *domain,
struct device *dev,
struct iommu_guest_stage_config *cfg)
@@ -2153,6 +2168,7 @@ static struct iommu_ops arm_smmu_ops = {
.of_xlate = arm_smmu_of_xlate,
.get_resv_regions = arm_smmu_get_resv_regions,
.put_resv_regions = arm_smmu_put_resv_regions,
+ .bind_guest_msi = arm_smmu_bind_guest_msi,
.bind_guest_stage = arm_smmu_bind_guest_stage,
.unbind_guest_stage = arm_smmu_unbind_guest_stage,
.tlb_invalidate = arm_smmu_tlb_invalidate,
--
2.5.5
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