drm/i915: Track when we dirty the scanout with render commands

This is required for tracking render damage for use with FBC and will be
used in subsequent patches.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

4 files changed, 13 insertions, 6 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index a8bb62ca8756..c98333d74111 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -786,7 +786,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *objects,
                         obj->dirty = 1;
                         obj->last_write_seqno = intel_ring_get_seqno(ring);
                         if (obj->pin_count) /* check for potential scanout */
-                                intel_mark_fb_busy(obj);
+                                intel_mark_fb_busy(obj, ring);
                 }
 
                 trace_i915_gem_object_change_domain(obj, old_read, old_write);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3f025ee299dd..7b9eb7ccc09a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7112,7 +7112,8 @@ void intel_mark_idle(struct drm_device *dev)
         }
 }
 
-void intel_mark_fb_busy(struct drm_i915_gem_object *obj)
+void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
+                        struct intel_ring_buffer *ring)
 {
         struct drm_device *dev = obj->base.dev;
         struct drm_crtc *crtc;
@@ -7124,8 +7125,12 @@ void intel_mark_fb_busy(struct drm_i915_gem_object *obj)
                 if (!crtc->fb)
                         continue;
 
-                if (to_intel_framebuffer(crtc->fb)->obj == obj)
-                        intel_increase_pllclock(crtc);
+                if (to_intel_framebuffer(crtc->fb)->obj != obj)
+                        continue;
+
+                intel_increase_pllclock(crtc);
+                if (ring && intel_fbc_enabled(dev))
+                        ring->fbc_dirty = true;
         }
 }
 
@@ -7575,7 +7580,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
                 goto cleanup_pending;
 
         intel_disable_fbc(dev);
-        intel_mark_fb_busy(obj);
+        intel_mark_fb_busy(obj, NULL);
         mutex_unlock(&dev->struct_mutex);
 
         trace_i915_flip_request(intel_crtc->plane, obj);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b76a956cfb9a..bb4822a6c41e 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -574,7 +574,8 @@ extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
 extern void intel_dvo_init(struct drm_device *dev);
 extern void intel_tv_init(struct drm_device *dev);
 extern void intel_mark_busy(struct drm_device *dev);
-extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj);
+extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
+                               struct intel_ring_buffer *ring);
 extern void intel_mark_idle(struct drm_device *dev);
 extern bool intel_lvds_init(struct drm_device *dev);
 extern bool intel_is_dual_link_lvds(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 4c7e103e6fa4..efc403d1e3e0 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -140,6 +140,7 @@ struct  intel_ring_buffer {
          */
         u32 outstanding_lazy_request;
         bool gpu_caches_dirty;
+        bool fbc_dirty;
 
         wait_queue_head_t irq_queue;