From: Feng Liu <feliu@xxxxxxxxxx>
Introduce API to get PF virtio device from the given VF PCI device so
that other modules such as vfio in subsequent patch can use it.
Signed-off-by: Feng Liu <feliu@xxxxxxxxxx>
Reviewed-by: Parav Pandit <parav@xxxxxxxxxx>
Reviewed-by: Jiri Pirko <jiri@xxxxxxxxxx>
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxx>
---
drivers/virtio/virtio_pci_common.c | 12 ++++++++++++
include/linux/virtio.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 7a3e6edc4dd6..c64484cd5b13 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -648,6 +648,18 @@ static struct pci_driver virtio_pci_driver = {
.sriov_configure = virtio_pci_sriov_configure,
};
+struct virtio_device *virtio_pci_vf_get_pf_dev(struct pci_dev *pdev)
+{
+ struct virtio_pci_device *pf_vp_dev;
+
+ pf_vp_dev = pci_iov_get_pf_drvdata(pdev, &virtio_pci_driver);
+ if (IS_ERR(pf_vp_dev))
+ return NULL;
+
+ return &pf_vp_dev->vdev;
+}
+EXPORT_SYMBOL_GPL(virtio_pci_vf_get_pf_dev);
+
module_pci_driver(virtio_pci_driver);
MODULE_AUTHOR("Anthony Liguori <aliguori@xxxxxxxxxx>");
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 094a2ef1c8b8..4ae088ea9299 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -217,6 +217,7 @@ static inline struct virtio_driver *drv_to_virtio(struct device_driver *drv)
int virtio_admin_cmd_exec(struct virtio_device *vdev,
struct virtio_admin_cmd *cmd);
+struct virtio_device *virtio_pci_vf_get_pf_dev(struct pci_dev *pdev);
int register_virtio_driver(struct virtio_driver *drv);
void unregister_virtio_driver(struct virtio_driver *drv);
--
2.27.0
