From: Chris Wilson Date: Wed, 11 Sep 2019 17:59:26 +0000 (+0100) Subject: drm/i915: Disable FBC if BIOS reserved memory (stolen) is unavailable X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e3cb653d5cc42c2073ad174ae1130dc9e39266e9;p=linux.git drm/i915: Disable FBC if BIOS reserved memory (stolen) is unavailable The FBC requires a couple of contiguous buffers, which we allocate from stolen memory. If stolen memory is unavailable, we cannot allocate those buffers and so cannot support FBC. Mark it so. Signed-off-by: Chris Wilson Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20190911175926.31365-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index dc34b23e23201..3111ecaeabd0e 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -1320,6 +1320,9 @@ void intel_fbc_init(struct drm_i915_private *dev_priv) fbc->enabled = false; fbc->active = false; + if (!drm_mm_initialized(&dev_priv->mm.stolen)) + mkwrite_device_info(dev_priv)->display.has_fbc = false; + if (need_fbc_vtd_wa(dev_priv)) mkwrite_device_info(dev_priv)->display.has_fbc = false;