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authorZhu Lingshan <lingshan.zhu@intel.com>2021-08-12 06:24:53 +0300
committerMichael S. Tsirkin <mst@redhat.com>2021-09-05 23:23:07 +0300
commit30326f9577342aac257ed9c036608de666b06389 (patch)
tree5b4eef076733b3a08c0f7dda09491b774d7dfda3 /drivers/vdpa
parent7d2a07b769330c34b4deabeed939325c77a7ec2f (diff)
downloadlinux-30326f9577342aac257ed9c036608de666b06389.tar.xz
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')
-rw-r--r--drivers/vdpa/ifcvf/ifcvf_main.c34
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;