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| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2015-09-14 21:19:57 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-23 15:39:17 +0300 |
| commit | a9da512b3ed73045253afd778e40d4298f42905b (patch) | |
| tree | 563f4ac70236f0024832d1b7b6764a785d9c27af /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | adf70c65cff66d843d66469dbe13ef1ed21e062b (diff) | |
| download | linux-a9da512b3ed73045253afd778e40d4298f42905b.tar.xz | |
drm/i915: avoid the last 8mb of stolen on BDW/SKL
The FBC hardware for these platforms doesn't have access to the
bios_reserved range, so it always assumes the maximum (8mb) is used.
So avoid this range while allocating.
This solves a bunch of FIFO underruns that happen if you end up
putting the CFB in that memory range. On my machine, with 32mb of
stolen, I need a 2560x1440 mode for that.
Testcase: igt/kms_frontbuffer_tracking/fbc-* (given the right setup)
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 82750073d5b3..96ebb98a476d 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -341,6 +341,7 @@ struct i915_gtt { struct i915_address_space base; size_t stolen_size; /* Total size of stolen memory */ + size_t stolen_usable_size; /* Total size minus BIOS reserved */ u64 mappable_end; /* End offset that we can CPU map */ struct io_mapping *mappable; /* Mapping to our CPU mappable region */ phys_addr_t mappable_base; /* PA of our GMADR */ |