* [PATCH 1/3] drm/virtio: skip set_scanout if framebuffer didn't change
[not found] <20191211084216.25405-1-kraxel@redhat.com>
@ 2019-12-11 8:42 ` Gerd Hoffmann
2019-12-11 18:27 ` Chia-I Wu
2019-12-11 8:42 ` [PATCH 2/3] virtio-gpu: batch display update commands Gerd Hoffmann
2019-12-11 8:42 ` [PATCH 3/3] virtio-gpu: use damage info for display updates Gerd Hoffmann
2 siblings, 1 reply; 5+ messages in thread
From: Gerd Hoffmann @ 2019-12-11 8:42 UTC (permalink / raw)
To: dri-devel
Cc: gurchetansingh, Gerd Hoffmann, David Airlie, Daniel Vetter,
open list:VIRTIO GPU DRIVER, open list
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 31 ++++++++++++++------------
1 file changed, 17 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index bc4bc4475a8c..a0f91658c2bc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -151,20 +151,23 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
if (bo->dumb)
virtio_gpu_update_dumb_bo(vgdev, bo, plane->state);
- DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
- bo->hw_res_handle,
- plane->state->crtc_w, plane->state->crtc_h,
- plane->state->crtc_x, plane->state->crtc_y,
- plane->state->src_w >> 16,
- plane->state->src_h >> 16,
- plane->state->src_x >> 16,
- plane->state->src_y >> 16);
- virtio_gpu_cmd_set_scanout(vgdev, output->index,
- bo->hw_res_handle,
- plane->state->src_w >> 16,
- plane->state->src_h >> 16,
- plane->state->src_x >> 16,
- plane->state->src_y >> 16);
+ if (plane->state->fb != old_state->fb) {
+ DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
+ bo->hw_res_handle,
+ plane->state->crtc_w, plane->state->crtc_h,
+ plane->state->crtc_x, plane->state->crtc_y,
+ plane->state->src_w >> 16,
+ plane->state->src_h >> 16,
+ plane->state->src_x >> 16,
+ plane->state->src_y >> 16);
+ virtio_gpu_cmd_set_scanout(vgdev, output->index,
+ bo->hw_res_handle,
+ plane->state->src_w >> 16,
+ plane->state->src_h >> 16,
+ plane->state->src_x >> 16,
+ plane->state->src_y >> 16);
+ }
+
virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
plane->state->src_x >> 16,
plane->state->src_y >> 16,
--
2.18.1
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 1/3] drm/virtio: skip set_scanout if framebuffer didn't change
2019-12-11 8:42 ` [PATCH 1/3] drm/virtio: skip set_scanout if framebuffer didn't change Gerd Hoffmann
@ 2019-12-11 18:27 ` Chia-I Wu
0 siblings, 0 replies; 5+ messages in thread
From: Chia-I Wu @ 2019-12-11 18:27 UTC (permalink / raw)
To: Gerd Hoffmann
Cc: ML dri-devel, David Airlie, open list,
open list:VIRTIO GPU DRIVER, Gurchetan Singh
On Wed, Dec 11, 2019 at 12:42 AM Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
> drivers/gpu/drm/virtio/virtgpu_plane.c | 31 ++++++++++++++------------
> 1 file changed, 17 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
> index bc4bc4475a8c..a0f91658c2bc 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_plane.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
> @@ -151,20 +151,23 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
> if (bo->dumb)
> virtio_gpu_update_dumb_bo(vgdev, bo, plane->state);
>
> - DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
> - bo->hw_res_handle,
> - plane->state->crtc_w, plane->state->crtc_h,
> - plane->state->crtc_x, plane->state->crtc_y,
> - plane->state->src_w >> 16,
> - plane->state->src_h >> 16,
> - plane->state->src_x >> 16,
> - plane->state->src_y >> 16);
> - virtio_gpu_cmd_set_scanout(vgdev, output->index,
> - bo->hw_res_handle,
> - plane->state->src_w >> 16,
> - plane->state->src_h >> 16,
> - plane->state->src_x >> 16,
> - plane->state->src_y >> 16);
> + if (plane->state->fb != old_state->fb) {
Should we check src_{w,h,x,y} as well?
> + DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
> + bo->hw_res_handle,
> + plane->state->crtc_w, plane->state->crtc_h,
> + plane->state->crtc_x, plane->state->crtc_y,
> + plane->state->src_w >> 16,
> + plane->state->src_h >> 16,
> + plane->state->src_x >> 16,
> + plane->state->src_y >> 16);
> + virtio_gpu_cmd_set_scanout(vgdev, output->index,
> + bo->hw_res_handle,
> + plane->state->src_w >> 16,
> + plane->state->src_h >> 16,
> + plane->state->src_x >> 16,
> + plane->state->src_y >> 16);
> + }
> +
> virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
> plane->state->src_x >> 16,
> plane->state->src_y >> 16,
> --
> 2.18.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 2/3] virtio-gpu: batch display update commands.
[not found] <20191211084216.25405-1-kraxel@redhat.com>
2019-12-11 8:42 ` [PATCH 1/3] drm/virtio: skip set_scanout if framebuffer didn't change Gerd Hoffmann
@ 2019-12-11 8:42 ` Gerd Hoffmann
2019-12-11 8:42 ` [PATCH 3/3] virtio-gpu: use damage info for display updates Gerd Hoffmann
2 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2019-12-11 8:42 UTC (permalink / raw)
To: dri-devel
Cc: gurchetansingh, Gerd Hoffmann, David Airlie, Daniel Vetter,
open list:VIRTIO GPU DRIVER, open list
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>
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 6 ++++++
drivers/gpu/drm/virtio/virtgpu_plane.c | 4 ++++
drivers/gpu/drm/virtio/virtgpu_vq.c | 23 +++++++++++++++++++++--
3 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index eedae2a7b532..29cf005ed6b9 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -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,
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index a0f91658c2bc..2e0d14e005db 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -146,6 +146,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
return;
}
+ virtio_gpu_disable_notify(vgdev);
+
vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
if (bo->dumb)
@@ -173,6 +175,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
plane->state->src_y >> 16,
plane->state->src_w >> 16,
plane->state->src_h >> 16);
+
+ virtio_gpu_enable_notify(vgdev);
}
static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 9274c4063c70..5914e79d3429 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -404,8 +404,12 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
}
notify = virtio_gpu_queue_ctrl_buffer_locked(vgdev, vbuf, vout);
spin_unlock(&vgdev->ctrlq.qlock);
- if (notify)
- virtqueue_notify(vgdev->ctrlq.vq);
+ if (notify) {
+ if (vgdev->disable_notify)
+ vgdev->pending_notify = true;
+ else
+ virtqueue_notify(vgdev->ctrlq.vq);
+ }
if (sgt) {
sg_free_table(sgt);
@@ -413,6 +417,21 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev,
}
}
+void virtio_gpu_disable_notify(struct virtio_gpu_device *vgdev)
+{
+ vgdev->disable_notify = true;
+}
+
+void virtio_gpu_enable_notify(struct virtio_gpu_device *vgdev)
+{
+ vgdev->disable_notify = false;
+
+ if (!vgdev->pending_notify)
+ return;
+ vgdev->pending_notify = false;
+ virtqueue_notify(vgdev->ctrlq.vq);
+}
+
static void virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev,
struct virtio_gpu_vbuffer *vbuf)
{
--
2.18.1
^ permalink raw reply [flat|nested] 5+ messages in thread* [PATCH 3/3] virtio-gpu: use damage info for display updates.
[not found] <20191211084216.25405-1-kraxel@redhat.com>
2019-12-11 8:42 ` [PATCH 1/3] drm/virtio: skip set_scanout if framebuffer didn't change Gerd Hoffmann
2019-12-11 8:42 ` [PATCH 2/3] virtio-gpu: batch display update commands Gerd Hoffmann
@ 2019-12-11 8:42 ` Gerd Hoffmann
2019-12-11 19:03 ` Chia-I Wu
2 siblings, 1 reply; 5+ messages in thread
From: Gerd Hoffmann @ 2019-12-11 8:42 UTC (permalink / raw)
To: dri-devel
Cc: gurchetansingh, Gerd Hoffmann, David Airlie, Daniel Vetter,
open list:VIRTIO GPU DRIVER, open list
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_plane.c | 41 +++++++++++++++-----------
1 file changed, 24 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 2e0d14e005db..1a0fbbb91ec7 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -24,6 +24,7 @@
*/
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_damage_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_plane_helper.h>
@@ -103,22 +104,26 @@ static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
}
static void virtio_gpu_update_dumb_bo(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_object *bo,
- struct drm_plane_state *state)
+ struct drm_plane_state *state,
+ struct drm_rect *rect)
{
+ struct virtio_gpu_object *bo =
+ gem_to_virtio_gpu_obj(state->fb->obj[0]);
struct virtio_gpu_object_array *objs;
+ uint32_t w = rect->x2 - rect->x1;
+ uint32_t h = rect->y2 - rect->y1;
+ uint32_t x = rect->x1 + (state->src_x >> 16);
+ uint32_t y = rect->y1 + (state->src_y >> 16);
+ uint32_t off = x * state->fb->format->cpp[0] +
+ y * state->fb->pitches[0];
objs = virtio_gpu_array_alloc(1);
if (!objs)
return;
virtio_gpu_array_add_obj(objs, &bo->base.base);
- virtio_gpu_cmd_transfer_to_host_2d
- (vgdev, 0,
- state->src_w >> 16,
- state->src_h >> 16,
- state->src_x >> 16,
- state->src_y >> 16,
- objs, NULL);
+
+ virtio_gpu_cmd_transfer_to_host_2d(vgdev, off, w, h, x, y,
+ objs, NULL);
}
static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
@@ -127,8 +132,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
struct drm_device *dev = plane->dev;
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_output *output = NULL;
- struct virtio_gpu_framebuffer *vgfb;
struct virtio_gpu_object *bo;
+ struct drm_rect rect;
if (plane->state->crtc)
output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
@@ -146,12 +151,14 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
return;
}
+ if (!drm_atomic_helper_damage_merged(old_state, plane->state, &rect))
+ return;
+
virtio_gpu_disable_notify(vgdev);
- vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
- bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
+ bo = gem_to_virtio_gpu_obj(plane->state->fb->obj[0]);
if (bo->dumb)
- virtio_gpu_update_dumb_bo(vgdev, bo, plane->state);
+ virtio_gpu_update_dumb_bo(vgdev, plane->state, &rect);
if (plane->state->fb != old_state->fb) {
DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
@@ -171,10 +178,10 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
}
virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
- plane->state->src_x >> 16,
- plane->state->src_y >> 16,
- plane->state->src_w >> 16,
- plane->state->src_h >> 16);
+ (plane->state->src_x >> 16) + rect.x1,
+ (plane->state->src_y >> 16) + rect.y1,
+ rect.x2 - rect.x1,
+ rect.y2 - rect.y1);
virtio_gpu_enable_notify(vgdev);
}
--
2.18.1
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH 3/3] virtio-gpu: use damage info for display updates.
2019-12-11 8:42 ` [PATCH 3/3] virtio-gpu: use damage info for display updates Gerd Hoffmann
@ 2019-12-11 19:03 ` Chia-I Wu
0 siblings, 0 replies; 5+ messages in thread
From: Chia-I Wu @ 2019-12-11 19:03 UTC (permalink / raw)
To: Gerd Hoffmann
Cc: ML dri-devel, David Airlie, open list,
open list:VIRTIO GPU DRIVER, Gurchetan Singh
On Wed, Dec 11, 2019 at 12:42 AM Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
> drivers/gpu/drm/virtio/virtgpu_plane.c | 41 +++++++++++++++-----------
> 1 file changed, 24 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
> index 2e0d14e005db..1a0fbbb91ec7 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_plane.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
> @@ -24,6 +24,7 @@
> */
>
> #include <drm/drm_atomic_helper.h>
> +#include <drm/drm_damage_helper.h>
> #include <drm/drm_fourcc.h>
> #include <drm/drm_plane_helper.h>
>
> @@ -103,22 +104,26 @@ static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
> }
>
> static void virtio_gpu_update_dumb_bo(struct virtio_gpu_device *vgdev,
> - struct virtio_gpu_object *bo,
> - struct drm_plane_state *state)
> + struct drm_plane_state *state,
> + struct drm_rect *rect)
> {
> + struct virtio_gpu_object *bo =
> + gem_to_virtio_gpu_obj(state->fb->obj[0]);
> struct virtio_gpu_object_array *objs;
> + uint32_t w = rect->x2 - rect->x1;
> + uint32_t h = rect->y2 - rect->y1;
> + uint32_t x = rect->x1 + (state->src_x >> 16);
> + uint32_t y = rect->y1 + (state->src_y >> 16);
> + uint32_t off = x * state->fb->format->cpp[0] +
> + y * state->fb->pitches[0];
>
> objs = virtio_gpu_array_alloc(1);
> if (!objs)
> return;
> virtio_gpu_array_add_obj(objs, &bo->base.base);
> - virtio_gpu_cmd_transfer_to_host_2d
> - (vgdev, 0,
> - state->src_w >> 16,
> - state->src_h >> 16,
> - state->src_x >> 16,
> - state->src_y >> 16,
> - objs, NULL);
> +
> + virtio_gpu_cmd_transfer_to_host_2d(vgdev, off, w, h, x, y,
> + objs, NULL);
> }
>
> static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
> @@ -127,8 +132,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
> struct drm_device *dev = plane->dev;
> struct virtio_gpu_device *vgdev = dev->dev_private;
> struct virtio_gpu_output *output = NULL;
> - struct virtio_gpu_framebuffer *vgfb;
> struct virtio_gpu_object *bo;
> + struct drm_rect rect;
>
> if (plane->state->crtc)
> output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
> @@ -146,12 +151,14 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
> return;
> }
>
> + if (!drm_atomic_helper_damage_merged(old_state, plane->state, &rect))
> + return;
> +
> virtio_gpu_disable_notify(vgdev);
>
> - vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
> - bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
> + bo = gem_to_virtio_gpu_obj(plane->state->fb->obj[0]);
> if (bo->dumb)
> - virtio_gpu_update_dumb_bo(vgdev, bo, plane->state);
> + virtio_gpu_update_dumb_bo(vgdev, plane->state, &rect);
>
> if (plane->state->fb != old_state->fb) {
> DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
> @@ -171,10 +178,10 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
> }
>
> virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
> - plane->state->src_x >> 16,
> - plane->state->src_y >> 16,
> - plane->state->src_w >> 16,
> - plane->state->src_h >> 16);
> + (plane->state->src_x >> 16) + rect.x1,
> + (plane->state->src_y >> 16) + rect.y1,
Digging into drm_atomic_helper_damage_merged, it seems rect uses
absolute values and is not relative to src_{x,y}.
> + rect.x2 - rect.x1,
> + rect.y2 - rect.y1);
>
> virtio_gpu_enable_notify(vgdev);
> }
> --
> 2.18.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
^ permalink raw reply [flat|nested] 5+ messages in thread