diff mbox series

[V3,1/2] vDPA/ifcvf: introduce get_dev_type() which returns virtio dev id

Message ID 20210706023649.23360-2-lingshan.zhu@intel.com
State New
Headers show
Series vDPA/ifcvf: implement management netlink framework | expand

Commit Message

Zhu Lingshan July 6, 2021, 2:36 a.m. UTC
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>
---
 drivers/vdpa/ifcvf/ifcvf_main.c | 34 ++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

Comments

Jason Wang July 9, 2021, 2:29 a.m. UTC | #1
在 2021/7/6 上午10:36, Zhu Lingshan 写道:
> 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>



> ---

>   drivers/vdpa/ifcvf/ifcvf_main.c | 34 ++++++++++++++++++++-------------

>   1 file changed, 21 insertions(+), 13 deletions(-)

>

> diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c

> index bc1d59f316d1..5f70ab1283a0 100644

> --- a/drivers/vdpa/ifcvf/ifcvf_main.c

> +++ b/drivers/vdpa/ifcvf/ifcvf_main.c

> @@ -442,6 +442,26 @@ static const struct vdpa_config_ops ifc_vdpa_ops = {

>   	.set_config_cb  = ifcvf_vdpa_set_config_cb,

>   };

>   

> +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;

> @@ -486,19 +506,7 @@ 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;
diff mbox series

Patch

diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
index bc1d59f316d1..5f70ab1283a0 100644
--- a/drivers/vdpa/ifcvf/ifcvf_main.c
+++ b/drivers/vdpa/ifcvf/ifcvf_main.c
@@ -442,6 +442,26 @@  static const struct vdpa_config_ops ifc_vdpa_ops = {
 	.set_config_cb  = ifcvf_vdpa_set_config_cb,
 };
 
+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;
@@ -486,19 +506,7 @@  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;