From 1ee493991470bcae58e716ba24d6d4eb9ad612ab Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Wed, 23 Sep 2015 13:27:08 +0200 Subject: [PATCH] drm/i915: Make plane fb tracking work correctly, v2. atomic->disabled_planes is a hack that had to exist because prepare_fb was only called when a new fb was set. This messed up fb tracking in some circumstances like aborts from interruptible waits. As a result interruptible waiting in prepare_plane_fb was forbidden, but other errors could still cause frontbuffer tracking to be messed up. Now that prepare_fb is always called, this hack is no longer required and prepare_fb may fail without consequences. Changes since v1: - Clean up a few fb tracking warnings by changing plane->fb to plane->state->fb. Signed-off-by: Maarten Lankhorst Reviewed-by: Ander Conselvan de Oliveira Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 47 +++++++++++----------------- drivers/gpu/drm/i915/intel_drv.h | 1 - 2 files changed, 18 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 82128b95785c..8b9869489651 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4805,17 +4805,6 @@ static void intel_pre_plane_update(struct intel_crtc *crtc) struct drm_device *dev = crtc->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc_atomic_commit *atomic = &crtc->atomic; - struct drm_plane *p; - - /* Track fb's for any planes being disabled */ - drm_for_each_plane_mask(p, dev, atomic->disabled_planes) { - struct intel_plane *plane = to_intel_plane(p); - - mutex_lock(&dev->struct_mutex); - i915_gem_track_fb(intel_fb_obj(plane->base.fb), NULL, - plane->frontbuffer_bit); - mutex_unlock(&dev->struct_mutex); - } if (atomic->wait_for_flips) intel_crtc_wait_for_pending_flips(&crtc->base); @@ -11599,14 +11588,6 @@ int intel_plane_atomic_calc_changes(struct drm_crtc_state *crtc_state, return ret; } - /* - * Disabling a plane is always okay; we just need to update - * fb tracking in a special way since cleanup_fb() won't - * get called by the plane helpers. - */ - if (old_plane_state->base.fb && !fb) - intel_crtc->atomic.disabled_planes |= 1 << i; - was_visible = old_plane_state->visible; visible = to_intel_plane_state(plane_state)->visible; @@ -13354,15 +13335,17 @@ intel_prepare_plane_fb(struct drm_plane *plane, struct drm_framebuffer *fb = new_state->fb; struct intel_plane *intel_plane = to_intel_plane(plane); struct drm_i915_gem_object *obj = intel_fb_obj(fb); - struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb); + struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb); int ret = 0; - if (!obj) + if (!obj && !old_obj) return 0; mutex_lock(&dev->struct_mutex); - if (plane->type == DRM_PLANE_TYPE_CURSOR && + if (!obj) { + ret = 0; + } else if (plane->type == DRM_PLANE_TYPE_CURSOR && INTEL_INFO(dev)->cursor_needs_physical) { int align = IS_I830(dev) ? 16 * 1024 : 256; ret = i915_gem_object_attach_phys(obj, align); @@ -13392,17 +13375,23 @@ intel_cleanup_plane_fb(struct drm_plane *plane, const struct drm_plane_state *old_state) { struct drm_device *dev = plane->dev; - struct drm_i915_gem_object *obj = intel_fb_obj(old_state->fb); + struct intel_plane *intel_plane = to_intel_plane(plane); + struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb); + struct drm_i915_gem_object *obj = intel_fb_obj(plane->state->fb); - if (!obj) + if (!obj && !old_obj) return; - if (plane->type != DRM_PLANE_TYPE_CURSOR || - !INTEL_INFO(dev)->cursor_needs_physical) { - mutex_lock(&dev->struct_mutex); + mutex_lock(&dev->struct_mutex); + if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR || + !INTEL_INFO(dev)->cursor_needs_physical)) intel_unpin_fb_obj(old_state->fb, old_state); - mutex_unlock(&dev->struct_mutex); - } + + /* prepare_fb aborted? */ + if ((old_obj && (old_obj->frontbuffer_bits & intel_plane->frontbuffer_bit)) || + (obj && !(obj->frontbuffer_bits & intel_plane->frontbuffer_bit))) + i915_gem_track_fb(old_obj, obj, intel_plane->frontbuffer_bit); + mutex_unlock(&dev->struct_mutex); } int diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index d1d35c79edfd..27dccf35f9bc 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -515,7 +515,6 @@ struct intel_crtc_atomic_commit { bool disable_cxsr; bool pre_disable_primary; bool update_wm_pre, update_wm_post; - unsigned disabled_planes; /* Sleepable operations to perform after commit */ unsigned fb_bits; -- 2.20.1