From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
If the scanout object exceeds the size of the stolen memory, there's no
way we can ever enable fbc with it. Just say no.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_pm.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index f3ef14a..777167e 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -471,6 +471,7 @@ static uint32_t ilk_pipe_pixel_rate(struct drm_device *dev,
static bool intel_fbc1_possible(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_framebuffer *fb = crtc->base.primary->fb;
struct drm_i915_gem_object *obj;
@@ -535,6 +536,12 @@ static bool intel_fbc1_possible(struct intel_crtc *crtc)
obj = to_intel_framebuffer(fb)->obj;
+ if (obj->base.size > dev_priv->gtt.stolen_size) {
+ DRM_DEBUG("FBC pipe %c, plane %c: framebuffer too big for stolen\n",
+ pipe_name(crtc->pipe), plane_name(crtc->plane));
+ return false;
+ }
+
if (obj->tiling_mode != I915_TILING_X ||
obj->fence_reg == I915_FENCE_REG_NONE) {
DRM_DEBUG("FBC pipe %c, plane %c: framebuffer not tiled or fenced\n",
@@ -648,6 +655,12 @@ static bool intel_fbc2_possible(struct intel_crtc *crtc)
obj = to_intel_framebuffer(fb)->obj;
+ if (obj->base.size > dev_priv->gtt.stolen_size) {
+ DRM_DEBUG("FBC pipe %c, plane %c: framebuffer too big for stolen\n",
+ pipe_name(crtc->pipe), plane_name(crtc->plane));
+ return false;
+ }
+
if (obj->tiling_mode != I915_TILING_X ||
obj->fence_reg == I915_FENCE_REG_NONE) {
DRM_DEBUG("FBC pipe %c, plane %c: framebuffer not tiled or fenced\n",
--
1.8.5.5
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