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 | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index ca72e0ce92f6..999ee470a2ae 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2226,6 +2226,28 @@ static void arm_smmu_put_resv_regions(struct device *dev, kfree(entry); } +static int arm_smmu_bind_guest_msi(struct iommu_domain *domain, + struct device *dev, + struct iommu_guest_msi_binding *binding) +{ + 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_doorbell(domain, dev, binding); +out: + mutex_unlock(&smmu_domain->init_mutex); + return ret; +} + static int arm_smmu_set_pasid_table(struct iommu_domain *domain, struct iommu_pasid_table_config *cfg) { @@ -2352,6 +2374,7 @@ static struct iommu_ops arm_smmu_ops = { .put_resv_regions = arm_smmu_put_resv_regions, .set_pasid_table = arm_smmu_set_pasid_table, .cache_invalidate = arm_smmu_cache_invalidate, + .bind_guest_msi = arm_smmu_bind_guest_msi, .pgsize_bitmap = -1UL, /* Restricted during device attach */ }; -- 2.17.2