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drm/i915/bdw: Remove BDW preproduction W/As until C stepping. 

Let's clean this a bit

v2: Rebase after other Mika's patch that removed some BDW production workarounds.
v3: Removed stepping info.

Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2014-10-09 07:11:47 -07:00 committed by Daniel Vetter
parent f2fbc690ae
commit 101b376d35
2 changed files with 2 additions and 13 deletions
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10
drivers/gpu/drm/i915/intel_pm.c
View File

@ -5654,16 +5654,6 @@ static void broadwell_init_clock_gating(struct drm_device *dev)
I915_WRITE(WM2_LP_ILK, 0);
I915_WRITE(WM1_LP_ILK, 0);
/* FIXME(BDW): Check all the w/a, some might only apply to
* pre-production hw. */
I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE));
I915_WRITE(_3D_CHICKEN3,
_MASKED_BIT_ENABLE(_3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2)));
/* WaSwitchSolVfFArbitrationPriority:bdw */
I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL);

5
drivers/gpu/drm/i915/intel_ringbuffer.c
View File

@ -712,13 +712,12 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring)
return ret;
/* WaDisablePartialInstShootdown:bdw */
/* WaDisableThreadStallDopClockGating:bdw */
/* FIXME: Unclear whether we really need this on production bdw. */
/* WaDisableThreadStallDopClockGating:bdw (pre-production) */
intel_ring_emit_wa(ring, GEN8_ROW_CHICKEN,
_MASKED_BIT_ENABLE(PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE
| STALL_DOP_GATING_DISABLE));
/* WaDisableDopClockGating:bdw May not be needed for production */
/* WaDisableDopClockGating:bdw */
intel_ring_emit_wa(ring, GEN7_ROW_CHICKEN2,
_MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));