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drm/virtio: batch display update commands.

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When the driver submits multiple commands in a row it makes sense to
notify the host only after submitting the last one, so the host can
process them all at once, with a single vmexit.

Add functions to enable/disable notifications to allow that.  Use the
new functions for primary plane updates.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20191212125346.8334-3-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann
2019-12-12 13:53:45 +01:00
parent 3954ff10e0
commit 7082e7a438
3 changed files with 31 additions and 2 deletions
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6
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -183,6 +183,9 @@ struct virtio_gpu_device {
struct kmem_cache *vbufs;
bool vqs_ready;
bool disable_notify;
bool pending_notify;
struct ida resource_ida;
wait_queue_head_t resp_wq;
@@ -335,6 +338,9 @@ void virtio_gpu_dequeue_ctrl_func(struct work_struct *work);
void virtio_gpu_dequeue_cursor_func(struct work_struct *work);
void virtio_gpu_dequeue_fence_func(struct work_struct *work);
void virtio_gpu_disable_notify(struct virtio_gpu_device *vgdev);
void virtio_gpu_enable_notify(struct virtio_gpu_device *vgdev);
/* virtio_gpu_display.c */
int virtio_gpu_framebuffer_init(struct drm_device *dev,
struct virtio_gpu_framebuffer *vgfb,