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drm/i915: gen7_setup_fixed_func_scheduler() actually implements WaVSThreadDispatchOverride 

The current comments indicate that this function implements
WaVSRefCountFullforceMissDisable, which is only true for HSW.
The original purpose of the function is to implement
WaVSThreadDispatchOverride (and a bit more). Fix up the comments
to match reality.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-01-22 21:32:59 +02:00 committed by Daniel Vetter
parent a7f593c71b
commit 3aad9059a4
1 changed files with 7 additions and 2 deletions
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9
drivers/gpu/drm/i915/intel_pm.c
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@ -4657,11 +4657,18 @@ static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv)
{
uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE);
/*
* WaVSThreadDispatchOverride:ivb,hsw
*
* This actually overrides the dispatch
* mode for all thread types.
*/
reg &= ~GEN7_FF_SCHED_MASK;
reg |= GEN7_FF_TS_SCHED_HW;
reg |= GEN7_FF_VS_SCHED_HW;
reg |= GEN7_FF_DS_SCHED_HW;
/* WaVSRefCountFullforceMissDisable:hsw */
if (IS_HASWELL(dev_priv->dev))
reg &= ~GEN7_FF_VS_REF_CNT_FFME;
@ -4775,7 +4782,6 @@ static void haswell_init_clock_gating(struct drm_device *dev)
I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
/* WaVSRefCountFullforceMissDisable:hsw */
gen7_setup_fixed_func_scheduler(dev_priv);
/* WaDisable4x2SubspanOptimization:hsw */
@ -4853,7 +4859,6 @@ static void ivybridge_init_clock_gating(struct drm_device *dev)
g4x_disable_trickle_feed(dev);
/* WaVSRefCountFullforceMissDisable:ivb */
gen7_setup_fixed_func_scheduler(dev_priv);
/* WaDisable4x2SubspanOptimization:ivb */