diff options
| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2021-08-12 11:24:53 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-05 16:23:07 -0400 |
| commit | 30326f9577342aac257ed9c036608de666b06389 (patch) | |
| tree | 5b4eef076733b3a08c0f7dda09491b774d7dfda3 /drivers/vdpa/ifcvf | |
| parent | 7d2a07b769330c34b4deabeed939325c77a7ec2f (diff) | |
| download | linux-30326f9577342aac257ed9c036608de666b06389.tar.bz2 | |
vDPA/ifcvf: introduce get_dev_type() which returns virtio dev id
This commit introduces a new function get_dev_type() which returns
the virtio device id of a device, to avoid duplicated code.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210812032454.24486-2-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa/ifcvf')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_main.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index 351c6cfb24c3..52465b7b0114 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -458,6 +458,26 @@ static const struct vdpa_config_ops ifc_vdpa_ops = { .get_vq_notification = ifcvf_get_vq_notification, }; +static u32 get_dev_type(struct pci_dev *pdev) +{ + u32 dev_type; + + /* This drirver drives both modern virtio devices and transitional + * devices in modern mode. + * vDPA requires feature bit VIRTIO_F_ACCESS_PLATFORM, + * so legacy devices and transitional devices in legacy + * mode will not work for vDPA, this driver will not + * drive devices with legacy interface. + */ + + if (pdev->device < 0x1040) + dev_type = pdev->subsystem_device; + else + dev_type = pdev->device - 0x1040; + + return dev_type; +} + static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct device *dev = &pdev->dev; @@ -502,19 +522,7 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, adapter); vf = &adapter->vf; - - /* This drirver drives both modern virtio devices and transitional - * devices in modern mode. - * vDPA requires feature bit VIRTIO_F_ACCESS_PLATFORM, - * so legacy devices and transitional devices in legacy - * mode will not work for vDPA, this driver will not - * drive devices with legacy interface. - */ - if (pdev->device < 0x1040) - vf->dev_type = pdev->subsystem_device; - else - vf->dev_type = pdev->device - 0x1040; - + vf->dev_type = get_dev_type(pdev); vf->base = pcim_iomap_table(pdev); adapter->pdev = pdev; |