bus/pci: fix IOMMU class for sPAPR

PPC64 sPAPR iommu does not support iova as va.
Use pa mode instead.

Fixes: 815c7deaed2d ("pci: get IOMMU class on Linux")

Signed-off-by: Jonas Pfefferle <jpf@zurich.ibm.com>

diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index 7367a82..7be7470 100644 (file)
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -586,6 +586,12 @@ rte_pci_get_iommu_class(void)
        bool is_vfio_noiommu_enabled = true;
        bool has_iova_va;
        bool is_bound_uio;
+       bool spapr_iommu =
+#if defined(RTE_ARCH_PPC64)
+               true;
+#else
+               false;
+#endif
 
        is_bound = pci_one_device_is_bound();
        if (!is_bound)
@@ -598,7 +604,8 @@ rte_pci_get_iommu_class(void)
                                        true : false;
 #endif
 
-       if (has_iova_va && !is_bound_uio && !is_vfio_noiommu_enabled)
+       if (has_iova_va && !is_bound_uio && !is_vfio_noiommu_enabled &&
+                       !spapr_iommu)
                return RTE_IOVA_VA;
 
        if (has_iova_va) {
@@ -607,6 +614,8 @@ rte_pci_get_iommu_class(void)
                        RTE_LOG(WARNING, EAL, "vfio-noiommu mode configured\n");
                if (is_bound_uio)
                        RTE_LOG(WARNING, EAL, "few device bound to UIO\n");
+               if (spapr_iommu)
+                       RTE_LOG(WARNING, EAL, "sPAPR IOMMU does not support IOVA as VA\n");
        }
 
        return RTE_IOVA_PA;