X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fbus%2Fpci%2Flinux%2Fpci.c;h=c99d523f0adfcca4156f3414a3e94b0ca9f99a06;hb=9cea8774cf1c466cdd6dc8bade4350cc28161905;hp=1783ec7f53d20fe329a2c82ed2870865eb6981c6;hpb=55e411b301c31ec8a0096f0f8d92cb544bd8274b;p=dpdk.git

diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index 1783ec7f53..c99d523f0a 100644
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -615,7 +615,16 @@ pci_one_device_iommu_support_va(struct rte_pci_device *dev)
 
 	mgaw = ((vtd_cap_reg & VTD_CAP_MGAW_MASK) >> VTD_CAP_MGAW_SHIFT) + 1;
 
-	return rte_eal_check_dma_mask(mgaw) == 0 ? true : false;
+	/*
+	 * Assuming there is no limitation by now. We can not know at this point
+	 * because the memory has not been initialized yet. Setting the dma mask
+	 * will force a check once memory initialization is done. We can not do
+	 * a fallback to IOVA PA now, but if the dma check fails, the error
+	 * message should advice for using '--iova-mode pa' if IOVA VA is the
+	 * current mode.
+	 */
+	rte_mem_set_dma_mask(mgaw);
+	return true;
 }
 #elif defined(RTE_ARCH_PPC_64)
 static bool
@@ -704,6 +713,7 @@ int rte_pci_read_config(const struct rte_pci_device *device,
 
 	switch (device->kdrv) {
 	case RTE_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
 		return pci_uio_read_config(intr_handle, buf, len, offset);
 #ifdef VFIO_PRESENT
 	case RTE_KDRV_VFIO:
@@ -727,6 +737,7 @@ int rte_pci_write_config(const struct rte_pci_device *device,
 
 	switch (device->kdrv) {
 	case RTE_KDRV_IGB_UIO:
+	case RTE_KDRV_UIO_GENERIC:
 		return pci_uio_write_config(intr_handle, buf, len, offset);
 #ifdef VFIO_PRESENT
 	case RTE_KDRV_VFIO: