[PATCH v4 13/14] virtio: enable vfio in pmd driver
From: Santosh Shukla <hidden>
Date: 2016-01-14 13:29:27
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> --- 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;
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1.7.9.5