From 36cff1cbb89477c839588a7e40fec2a8db7df396 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 4 Dec 2011 12:51:45 +0100 Subject: intel: limit aperture space to mappable area on gen3 Otherwise we blow up on heavy tiled blitter loads (with giant pixmaps). Signed-Off-by: Daniel Vetter Acked-by: Chris Wilson --- intel/intel_bufmgr_gem.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'intel') diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index dd58c0c4..0cfeb988 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -2204,6 +2204,14 @@ drm_intel_bufmgr_gem_init(int fd, int batch_size) else bufmgr_gem->gen = 6; + if (IS_GEN3(bufmgr_gem) && bufmgr_gem->gtt_size > 256*1024*1024) { + /* The unmappable part of gtt on gen 3 (i.e. above 256MB) can't + * be used for tiled blits. To simplify the accounting, just + * substract the unmappable part (fixed to 256MB on all known + * gen3 devices) if the kernel advertises it. */ + bufmgr_gem->gtt_size -= 256*1024*1024; + } + gp.value = &tmp; gp.param = I915_PARAM_HAS_EXECBUF2; -- cgit v1.2.3