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| author | Kenneth Graunke <kenneth@whitecape.org> | 2012-02-08 12:53:52 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 10:32:58 -0700 |
| commit | a9941b5ec0105f00a7148d20e320af950dc0a7e9 (patch) | |
| tree | 699b9fa454770822114ad3d0d2cb95999a2fc26a /drivers/gpu/drm/i915/intel_display.c | |
| parent | a80a210c243ce15778d00d93c4726192f5b288ae (diff) | |
| download | kernel_samsung_smdk4412-a9941b5ec0105f00a7148d20e320af950dc0a7e9.zip kernel_samsung_smdk4412-a9941b5ec0105f00a7148d20e320af950dc0a7e9.tar.gz kernel_samsung_smdk4412-a9941b5ec0105f00a7148d20e320af950dc0a7e9.tar.bz2 | |
drm/i915: gen7: Disable the RHWO optimization as it can cause GPU hangs.
commit d71de14ddf423ccc9a2e3f7e37553c99ead20d7c upstream.
The BSpec Workarounds page states that bits 10 and 26 must be set to
avoid 3D ring hangs.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41353
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44610
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index aac61b2..57f9043 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7464,6 +7464,10 @@ static void ivybridge_init_clock_gating(struct drm_device *dev) I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE); + /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */ + I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1, + GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC); + /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */ I915_WRITE(GEN7_L3CNTLREG1, GEN7_WA_FOR_GEN7_L3_CONTROL); |