The bind/unbind_guest_msi() callbacks check the domain
is NESTED and redirect to the dma-iommu implementation.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
v6 -> v7:
- remove device handle argument
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 +++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 0c5ab4005f76..5aa9e0e747fa 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2738,6 +2738,47 @@ static void arm_smmu_get_resv_regions(struct device *dev,
iommu_dma_get_resv_regions(dev, head);
}
+static int
+arm_smmu_bind_guest_msi(struct iommu_domain *domain,
+ dma_addr_t giova, phys_addr_t gpa, size_t size)
+{
+ struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct arm_smmu_device *smmu;
+ int ret = -EINVAL;
+
+ mutex_lock(&smmu_domain->init_mutex);
+ smmu = smmu_domain->smmu;
+ if (!smmu)
+ goto out;
+
+ if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
+ goto out;
+
+ ret = iommu_dma_bind_guest_msi(domain, giova, gpa, size);
+out:
+ mutex_unlock(&smmu_domain->init_mutex);
+ return ret;
+}
+
+static void
+arm_smmu_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t giova)
+{
+ struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain);
+ struct arm_smmu_device *smmu;
+
+ mutex_lock(&smmu_domain->init_mutex);
+ smmu = smmu_domain->smmu;
+ if (!smmu)
+ goto unlock;
+
+ if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED)
+ goto unlock;
+
+ iommu_dma_unbind_guest_msi(domain, giova);
+unlock:
+ mutex_unlock(&smmu_domain->init_mutex);
+}
+
static int arm_smmu_attach_pasid_table(struct iommu_domain *domain,
struct iommu_pasid_table_config *cfg)
{
@@ -2970,6 +3011,8 @@ static struct iommu_ops arm_smmu_ops = {
.attach_pasid_table = arm_smmu_attach_pasid_table,
.detach_pasid_table = arm_smmu_detach_pasid_table,
.cache_invalidate = arm_smmu_cache_invalidate,
+ .bind_guest_msi = arm_smmu_bind_guest_msi,
+ .unbind_guest_msi = arm_smmu_unbind_guest_msi,
.dev_has_feat = arm_smmu_dev_has_feature,
.dev_feat_enabled = arm_smmu_dev_feature_enabled,
.dev_enable_feat = arm_smmu_dev_enable_feature,
--
2.21.3
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