Using mapping api i.e. rte_eal_pci_map_device() to create vfio container, group
id and get the vfio-dev-fd for virtio-net-pci interface. Later vfio_dev_fd used
for virtio device rd/wr operation.
Signed-off-by: Santosh Shukla <sshukla at mvista.com>
---
v3->v4:
- Per stephens comment, removed static driver flag RTE_PCI_XXX_XX_NEED_MAPPING ,
now vfio virtio pmd driver intialized vifio interface at runtime.
drivers/net/virtio/virtio_ethdev.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/virtio/virtio_ethdev.c
b/drivers/net/virtio/virtio_ethdev.c
index 8f2260f..ce03a24 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -497,6 +497,8 @@ virtio_dev_close(struct rte_eth_dev *dev)
hw->started = 0;
virtio_dev_free_mbufs(dev);
virtio_free_queues(dev);
+
+ /* For vfio case : hotunplug/unmap not supported (todo) */
}
static void
@@ -1286,6 +1288,16 @@ static int virtio_hw_init_by_vfio(struct virtio_hw *hw,
return -1;
}
+ /*
+ * pci_map_device used not to actually map ioport region but
+ * create vfio container/group and vfio-dev-fd for _this_
+ * virtio interface.
+ */
+ if (rte_eal_pci_map_device(pci_dev) != 0) {
+ PMD_INIT_LOG(ERR, "vfio pci mapping failed for ioport bar\n");
+ return -1;
+ }
+
/* .. So attached interface is vfio */
vdev->is_vfio = true;
vdev->pci_dev = pci_dev;
--
1.7.9.5
