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vdpa: add get_config_size callback in vdpa_config_ops

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This new callback is used to get the size of the configuration space
of vDPA devices.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210315163450.254396-9-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Stefano Garzarella
2021-03-15 17:34:44 +01:00
committed by Michael S. Tsirkin
parent bc433e5e0d
commit 442706f9f9
5 changed files with 33 additions and 0 deletions
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4
include/linux/vdpa.h
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@@ -150,6 +150,9 @@ struct vdpa_iova_range {
* @set_status: Set the device status
* @vdev: vdpa device
* @status: virtio device status
* @get_config_size: Get the size of the configuration space
* @vdev: vdpa device
* Returns size_t: configuration size
* @get_config: Read from device specific configuration space
* @vdev: vdpa device
* @offset: offset from the beginning of
@@ -231,6 +234,7 @@ struct vdpa_config_ops {
u32 (*get_vendor_id)(struct vdpa_device *vdev);
u8 (*get_status)(struct vdpa_device *vdev);
void (*set_status)(struct vdpa_device *vdev, u8 status);
size_t (*get_config_size)(struct vdpa_device *vdev);
void (*get_config)(struct vdpa_device *vdev, unsigned int offset,
void *buf, unsigned int len);
void (*set_config)(struct vdpa_device *vdev, unsigned int offset,