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virtio-pci-modern: introduce helper to set config vector

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This patch introduces vp_modern_config_vector() for setting config
vector.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210104065503.199631-6-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang 2021-01-04 14:54:49 +08:00 committed by Michael S. Tsirkin
parent 3249037088
commit 1a5c85f165
1 changed files with 14 additions and 2 deletions
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16
drivers/virtio/virtio_pci_modern.c
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@ -315,9 +315,16 @@ static void vp_reset(struct virtio_device *vdev)
vp_synchronize_vectors(vdev);
}
static u16 vp_config_vector(struct virtio_pci_device *vp_dev, u16 vector)
/*
* vp_modern_config_vector - set the vector for config interrupt
* @mdev: the modern virtio-pci device
* @vector: the config vector
*
* Returns the config vector read from the device
*/
static u16 vp_modern_config_vector(struct virtio_pci_modern_device *mdev,
u16 vector)
{
struct virtio_pci_modern_device *mdev = &vp_dev->mdev;
struct virtio_pci_common_cfg __iomem *cfg = mdev->common;
/* Setup the vector used for configuration events */
@ -327,6 +334,11 @@ static u16 vp_config_vector(struct virtio_pci_device *vp_dev, u16 vector)
return vp_ioread16(&cfg->msix_config);
}
static u16 vp_config_vector(struct virtio_pci_device *vp_dev, u16 vector)
{
return vp_modern_config_vector(&vp_dev->mdev, vector);
}
static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
struct virtio_pci_vq_info *info,
unsigned index,