On Thu, Apr 27, 2017 at 12:15:15PM -0300, Gustavo Padovan wrote: > From: Gustavo Padovan <gustavo.pado...@collabora.com> > > Add support to async updates of cursors by using the new atomic > interface for that. Basically what this commit does is do what > intel_legacy_cursor_update() did but through atomic. > > v2: move fb setting to core and use new state (Eric Anholt) > > Cc: Daniel Vetter <daniel.vet...@intel.com> > Signed-off-by: Gustavo Padovan <gustavo.pado...@collabora.com> > --- > drivers/gpu/drm/i915/intel_atomic_plane.c | 52 +++++++++++ > drivers/gpu/drm/i915/intel_display.c | 147 > +++++------------------------- > 2 files changed, 73 insertions(+), 126 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c > b/drivers/gpu/drm/i915/intel_atomic_plane.c > index cfb4729..c5d0596 100644 > --- a/drivers/gpu/drm/i915/intel_atomic_plane.c > +++ b/drivers/gpu/drm/i915/intel_atomic_plane.c > @@ -246,11 +246,63 @@ static void intel_plane_atomic_update(struct drm_plane > *plane, > } > } > > +static int intel_plane_atomic_async_check(struct drm_plane *plane, > + struct drm_plane_state *state) > +{ > + struct drm_crtc *crtc = plane->state->crtc; > + struct drm_crtc_state *crtc_state = crtc->state; > + > + if (plane->type != DRM_PLANE_TYPE_CURSOR) > + return -EINVAL; > + > + /* > + * When crtc is inactive or there is a modeset pending, > + * wait for it to complete in the slowpath > + */ > + if (!crtc_state->active || to_intel_crtc_state(crtc_state)->update_pipe) > + return -EINVAL; > + > + /* Only changing fb should be in the fastpath. */
No, we want cursor movement there as well. It's somewhat impossible to see from this code now that the core has the size checks. But even so the comment should not lie. > + if (!plane->state->fb != !state->fb) > + return -EINVAL; > + > + return 0; > +} > + > +static void intel_plane_atomic_async_update(struct drm_plane *plane, > + struct drm_plane_state *new_state) > +{ > + struct intel_plane *intel_plane = to_intel_plane(plane); > + struct drm_crtc *crtc = plane->state->crtc; > + > + i915_gem_track_fb(intel_fb_obj(plane->state->fb), > + intel_fb_obj(new_state->fb), > + intel_plane->frontbuffer_bit); > + > + *to_intel_plane_state(plane->state) = *to_intel_plane_state(new_state); > + to_intel_plane_state(new_state)->vma = > + to_intel_plane_state(plane->state)->vma; > + > + plane->state->visible = new_state->visible; > + > + if (plane->state->visible) { > + trace_intel_update_plane(plane, to_intel_crtc(crtc)); > + intel_plane->update_plane(plane, > + to_intel_crtc_state(crtc->state), > + to_intel_plane_state(new_state)); > + } else { > + trace_intel_disable_plane(plane, to_intel_crtc(crtc)); > + intel_plane->disable_plane(plane, crtc); > + } > +} > + > const struct drm_plane_helper_funcs intel_plane_helper_funcs = { > .prepare_fb = intel_prepare_plane_fb, > .cleanup_fb = intel_cleanup_plane_fb, > .atomic_check = intel_plane_atomic_check, > .atomic_update = intel_plane_atomic_update, > + .atomic_async_check = intel_plane_atomic_async_check, > + .atomic_async_update = intel_plane_atomic_async_update, NAK. We don't want these "async" updates for anything but cursors. > }; > > /** > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index e217d04..c854c87 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -12993,13 +12993,29 @@ static int intel_atomic_commit(struct drm_device > *dev, > int ret = 0; > > /* > - * The intel_legacy_cursor_update() fast path takes care > + * The atomic async update fast path takes care > * of avoiding the vblank waits for simple cursor > * movement and flips. For cursor on/off and size changes, > * we want to perform the vblank waits so that watermark > * updates happen during the correct frames. Gen9+ have > * double buffered watermarks and so shouldn't need this. > */ > + if (state->async_update) { > + ret = mutex_lock_interruptible(&dev->struct_mutex); > + if (ret) > + return ret; > + > + ret = drm_atomic_helper_prepare_planes(dev, state); > + mutex_unlock(&dev->struct_mutex); > + > + drm_atomic_helper_async_commit(dev, state); > + > + mutex_lock(&dev->struct_mutex); > + drm_atomic_helper_cleanup_planes(dev, state); > + mutex_unlock(&dev->struct_mutex); > + return 0; > + } > + > if (INTEL_GEN(dev_priv) < 9) > state->legacy_cursor_update = false; > > @@ -13141,6 +13157,9 @@ intel_prepare_plane_fb(struct drm_plane *plane, > } > } > > + if (new_state->state->async_update) > + return 0; > + > if (!obj && !old_obj) > return 0; > > @@ -13360,132 +13379,8 @@ const struct drm_plane_funcs intel_plane_funcs = { > .atomic_destroy_state = intel_plane_destroy_state, > }; > > -static int > -intel_legacy_cursor_update(struct drm_plane *plane, > - struct drm_crtc *crtc, > - struct drm_framebuffer *fb, > - int crtc_x, int crtc_y, > - unsigned int crtc_w, unsigned int crtc_h, > - uint32_t src_x, uint32_t src_y, > - uint32_t src_w, uint32_t src_h, > - struct drm_modeset_acquire_ctx *ctx) > -{ > - struct drm_i915_private *dev_priv = to_i915(crtc->dev); > - int ret; > - struct drm_plane_state *old_plane_state, *new_plane_state; > - struct intel_plane *intel_plane = to_intel_plane(plane); > - struct drm_framebuffer *old_fb; > - struct drm_crtc_state *crtc_state = crtc->state; > - struct i915_vma *old_vma; > - > - /* > - * When crtc is inactive or there is a modeset pending, > - * wait for it to complete in the slowpath > - */ > - if (!crtc_state->active || needs_modeset(crtc_state) || > - to_intel_crtc_state(crtc_state)->update_pipe) > - goto slow; > - > - old_plane_state = plane->state; > - > - /* > - * If any parameters change that may affect watermarks, > - * take the slowpath. Only changing fb or position should be > - * in the fastpath. > - */ > - if (old_plane_state->crtc != crtc || > - old_plane_state->src_w != src_w || > - old_plane_state->src_h != src_h || > - old_plane_state->crtc_w != crtc_w || > - old_plane_state->crtc_h != crtc_h || > - !old_plane_state->fb != !fb) > - goto slow; > - > - new_plane_state = intel_plane_duplicate_state(plane); > - if (!new_plane_state) > - return -ENOMEM; > - > - drm_atomic_set_fb_for_plane(new_plane_state, fb); > - > - new_plane_state->src_x = src_x; > - new_plane_state->src_y = src_y; > - new_plane_state->src_w = src_w; > - new_plane_state->src_h = src_h; > - new_plane_state->crtc_x = crtc_x; > - new_plane_state->crtc_y = crtc_y; > - new_plane_state->crtc_w = crtc_w; > - new_plane_state->crtc_h = crtc_h; > - > - ret = > intel_plane_atomic_check_with_state(to_intel_crtc_state(crtc->state), > - > to_intel_plane_state(new_plane_state)); > - if (ret) > - goto out_free; > - > - ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex); > - if (ret) > - goto out_free; > - > - if (INTEL_INFO(dev_priv)->cursor_needs_physical) { > - int align = IS_I830(dev_priv) ? 16 * 1024 : 256; > - > - ret = i915_gem_object_attach_phys(intel_fb_obj(fb), align); > - if (ret) { > - DRM_DEBUG_KMS("failed to attach phys object\n"); > - goto out_unlock; > - } > - } else { > - struct i915_vma *vma; > - > - vma = intel_pin_and_fence_fb_obj(fb, new_plane_state->rotation); > - if (IS_ERR(vma)) { > - DRM_DEBUG_KMS("failed to pin object\n"); > - > - ret = PTR_ERR(vma); > - goto out_unlock; > - } > - > - to_intel_plane_state(new_plane_state)->vma = vma; > - } > - > - old_fb = old_plane_state->fb; > - old_vma = to_intel_plane_state(old_plane_state)->vma; > - > - i915_gem_track_fb(intel_fb_obj(old_fb), intel_fb_obj(fb), > - intel_plane->frontbuffer_bit); > - > - /* Swap plane state */ > - new_plane_state->fence = old_plane_state->fence; > - *to_intel_plane_state(old_plane_state) = > *to_intel_plane_state(new_plane_state); > - new_plane_state->fence = NULL; > - new_plane_state->fb = old_fb; > - to_intel_plane_state(new_plane_state)->vma = old_vma; > - > - if (plane->state->visible) { > - trace_intel_update_plane(plane, to_intel_crtc(crtc)); > - intel_plane->update_plane(plane, > - to_intel_crtc_state(crtc->state), > - to_intel_plane_state(plane->state)); > - } else { > - trace_intel_disable_plane(plane, to_intel_crtc(crtc)); > - intel_plane->disable_plane(plane, crtc); > - } > - > - intel_cleanup_plane_fb(plane, new_plane_state); > - > -out_unlock: > - mutex_unlock(&dev_priv->drm.struct_mutex); > -out_free: > - intel_plane_destroy_state(plane, new_plane_state); > - return ret; > - > -slow: > - return drm_atomic_helper_update_plane(plane, crtc, fb, > - crtc_x, crtc_y, crtc_w, crtc_h, > - src_x, src_y, src_w, src_h, ctx); > -} > - > static const struct drm_plane_funcs intel_cursor_plane_funcs = { > - .update_plane = intel_legacy_cursor_update, > + .update_plane = drm_atomic_helper_update_plane, > .disable_plane = drm_atomic_helper_disable_plane, > .destroy = intel_plane_destroy, > .set_property = drm_atomic_helper_plane_set_property, > -- > 2.9.3 > > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Ville Syrjälä Intel OTC _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel