bus/pci: support hot-unplug handler

[dpdk.git] / drivers / bus / pci / pci_common.c

diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c
index c7695d1..be7cc1f 100644 (file)
--- a/drivers/bus/pci/pci_common.c
+++ b/drivers/bus/pci/pci_common.c
@@ -403,6 +403,33 @@ pci_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
        return NULL;
 }
 
+static int
+pci_hot_unplug_handler(struct rte_device *dev)
+{
+       struct rte_pci_device *pdev = NULL;
+       int ret = 0;
+
+       pdev = RTE_DEV_TO_PCI(dev);
+       if (!pdev)
+               return -1;
+
+       switch (pdev->kdrv) {
+       case RTE_KDRV_IGB_UIO:
+       case RTE_KDRV_UIO_GENERIC:
+       case RTE_KDRV_NIC_UIO:
+               /* BARs resource is invalid, remap it to be safe. */
+               ret = pci_uio_remap_resource(pdev);
+               break;
+       default:
+               RTE_LOG(DEBUG, EAL,
+                       "Not managed by a supported kernel driver, skipped\n");
+               ret = -1;
+               break;
+       }
+
+       return ret;
+}
+
 static int
 pci_plug(struct rte_device *dev)
 {
@@ -434,6 +461,7 @@ struct rte_pci_bus rte_pci_bus = {
                .parse = pci_parse,
                .get_iommu_class = rte_pci_get_iommu_class,
                .dev_iterate = rte_pci_dev_iterate,
+               .hot_unplug_handler = pci_hot_unplug_handler,
        },
        .device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list),
        .driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list),