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authorJason Wang <jasowang@redhat.com>2021-01-04 07:54:49 +0100
committerMichael S. Tsirkin <mst@redhat.com>2021-02-23 13:52:57 +0100
commit1a5c85f16594416df258fe38ec05e0dd05846479 (patch)
tree5e72b42079ea8c8a840137816dfc885460783de8 /drivers/virtio/virtio_pci_modern.c
parentvirtio-pci-modern: introduce vp_modern_remove() (diff)
downloadlinux-1a5c85f16594416df258fe38ec05e0dd05846479.tar.xz
linux-1a5c85f16594416df258fe38ec05e0dd05846479.zip
virtio-pci-modern: introduce helper to set config vector
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>
Diffstat (limited to '')
-rw-r--r--drivers/virtio/virtio_pci_modern.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index 4be9afad547e..2e37bfc89655 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -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,