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Gerd Hoffmann

2015-Oct-02 11:58 UTC

[PATCH v3 7/7] [wip] virtio-gpu: add page flip support

Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_display.c | 49 ++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c
b/drivers/gpu/drm/virtio/virtgpu_display.c
index c9c1427..f545913 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -125,6 +125,51 @@ static int virtio_gpu_crtc_cursor_move(struct drm_crtc
*crtc,
 	return 0;
 }
 
+static int virtio_gpu_page_flip(struct drm_crtc *crtc,
+				struct drm_framebuffer *fb,
+				struct drm_pending_vblank_event *event,
+				uint32_t flags)
+{
+	struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
+	struct virtio_gpu_output *output +		container_of(crtc, struct
virtio_gpu_output, crtc);
+	struct drm_plane *plane = crtc->primary;
+	struct virtio_gpu_framebuffer *vgfb;
+	struct virtio_gpu_object *bo;
+	unsigned long irqflags;
+	uint32_t handle;
+
+	plane->fb = fb;
+	vgfb = to_virtio_gpu_framebuffer(plane->fb);
+	bo = gem_to_virtio_gpu_obj(vgfb->obj);
+	handle = bo->hw_res_handle;
+
+	DRM_DEBUG("handle 0x%x%s, crtc %dx%d\n", handle,
+		  bo->dumb ? ", dumb" : "",
+		  crtc->mode.hdisplay, crtc->mode.vdisplay);
+	if (bo->dumb) {
+		virtio_gpu_cmd_transfer_to_host_2d
+			(vgdev, handle, 0,
+			 cpu_to_le32(crtc->mode.hdisplay),
+			 cpu_to_le32(crtc->mode.vdisplay),
+			 0, 0, NULL);
+	}
+	virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
+				   crtc->mode.hdisplay,
+				   crtc->mode.vdisplay, 0, 0);
+	virtio_gpu_cmd_resource_flush(vgdev, handle, 0, 0,
+				      crtc->mode.hdisplay,
+				      crtc->mode.vdisplay);
+
+	if (event) {
+		spin_lock_irqsave(&crtc->dev->event_lock, irqflags);
+		drm_send_vblank_event(crtc->dev, -1, event);
+		spin_unlock_irqrestore(&crtc->dev->event_lock, irqflags);
+	}
+
+	return 0;
+}
+
 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
 	.cursor_set2            = virtio_gpu_crtc_cursor_set,
 	.cursor_move            = virtio_gpu_crtc_cursor_move,
@@ -132,9 +177,7 @@ static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
 	.set_config             = drm_atomic_helper_set_config,
 	.destroy                = drm_crtc_cleanup,
 
-#if 0 /* not (yet) working without vblank support according to docs */
-	.page_flip              = drm_atomic_helper_page_flip,
-#endif
+	.page_flip              = virtio_gpu_page_flip,
 	.reset                  = drm_atomic_helper_crtc_reset,
 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 	.atomic_destroy_state   = drm_atomic_helper_crtc_destroy_state,
-- 
1.8.3.1

Daniel Vetter

2016-May-25 16:37 UTC

head link

[PATCH v3 7/7] [wip] virtio-gpu: add page flip support

On Fri, Oct 2, 2015 at 1:58 PM, Gerd Hoffmann <kraxel at redhat.com>
wrote:> Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
So I entirely missed this, but this isn't really how to implement
page_flip for an atomic driver. Working on some stuff and will hack up
a likely totally broken patch, but should be enough as guideline.
-Daniel
> ---
>  drivers/gpu/drm/virtio/virtgpu_display.c | 49
++++++++++++++++++++++++++++++--
>  1 file changed, 46 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c
b/drivers/gpu/drm/virtio/virtgpu_display.c
> index c9c1427..f545913 100644
> --- a/drivers/gpu/drm/virtio/virtgpu_display.c
> +++ b/drivers/gpu/drm/virtio/virtgpu_display.c
> @@ -125,6 +125,51 @@ static int virtio_gpu_crtc_cursor_move(struct drm_crtc
*crtc,
>         return 0;
>  }
>
> +static int virtio_gpu_page_flip(struct drm_crtc *crtc,
> +                               struct drm_framebuffer *fb,
> +                               struct drm_pending_vblank_event *event,
> +                               uint32_t flags)
> +{
> +       struct virtio_gpu_device *vgdev = crtc->dev->dev_private;
> +       struct virtio_gpu_output *output > +              
container_of(crtc, struct virtio_gpu_output, crtc);
> +       struct drm_plane *plane = crtc->primary;
> +       struct virtio_gpu_framebuffer *vgfb;
> +       struct virtio_gpu_object *bo;
> +       unsigned long irqflags;
> +       uint32_t handle;
> +
> +       plane->fb = fb;
> +       vgfb = to_virtio_gpu_framebuffer(plane->fb);
> +       bo = gem_to_virtio_gpu_obj(vgfb->obj);
> +       handle = bo->hw_res_handle;
> +
> +       DRM_DEBUG("handle 0x%x%s, crtc %dx%d\n", handle,
> +                 bo->dumb ? ", dumb" : "",
> +                 crtc->mode.hdisplay, crtc->mode.vdisplay);
> +       if (bo->dumb) {
> +               virtio_gpu_cmd_transfer_to_host_2d
> +                       (vgdev, handle, 0,
> +                        cpu_to_le32(crtc->mode.hdisplay),
> +                        cpu_to_le32(crtc->mode.vdisplay),
> +                        0, 0, NULL);
> +       }
> +       virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
> +                                  crtc->mode.hdisplay,
> +                                  crtc->mode.vdisplay, 0, 0);
> +       virtio_gpu_cmd_resource_flush(vgdev, handle, 0, 0,
> +                                     crtc->mode.hdisplay,
> +                                     crtc->mode.vdisplay);
> +
> +       if (event) {
> +               spin_lock_irqsave(&crtc->dev->event_lock,
irqflags);
> +               drm_send_vblank_event(crtc->dev, -1, event);
> +               spin_unlock_irqrestore(&crtc->dev->event_lock,
irqflags);
> +       }
> +
> +       return 0;
> +}
> +
>  static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = {
>         .cursor_set2            = virtio_gpu_crtc_cursor_set,
>         .cursor_move            = virtio_gpu_crtc_cursor_move,
> @@ -132,9 +177,7 @@ static const struct drm_crtc_funcs
virtio_gpu_crtc_funcs = {
>         .set_config             = drm_atomic_helper_set_config,
>         .destroy                = drm_crtc_cleanup,
>
> -#if 0 /* not (yet) working without vblank support according to docs */
> -       .page_flip              = drm_atomic_helper_page_flip,
> -#endif
> +       .page_flip              = virtio_gpu_page_flip,
>         .reset                  = drm_atomic_helper_crtc_reset,
>         .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
>         .atomic_destroy_state   = drm_atomic_helper_crtc_destroy_state,
> --
> 1.8.3.1
>
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel


-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch

Gerd Hoffmann

2016-May-27 07:46 UTC

head link

[PATCH v3 7/7] [wip] virtio-gpu: add page flip support

On Mi, 2016-05-25 at 18:37 +0200, Daniel Vetter wrote:> On Fri, Oct 2, 2015 at 1:58 PM, Gerd Hoffmann <kraxel at redhat.com>
wrote:
> > Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
> 
> So I entirely missed this, but this isn't really how to implement
> page_flip for an atomic driver. Working on some stuff and will hack up
> a likely totally broken patch, but should be enough as guideline.
> -Daniel
Hmm, no patch in my inbox yet.  Care to send it over or give some hints
what is wrong with this?

thanks,
  Gerd

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