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drm/i915: implement WaDisableRenderCachePipelinedFlush 

Comment says for eaglelake/cantiga, but it's listed in the ilk table,
too. So apply it to both.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
hifive-unleashed-5.1
Daniel Vetter 2012-10-18 11:49:51 +02:00
parent a8b1397d71
commit 4358a3748c
2 changed files with 9 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -670,6 +670,7 @@
#define MI_ARB_DISPLAY_PRIORITY_B_A (1 << 0) /* display B > display A */
#define CACHE_MODE_0 0x02120 /* 915+ only */
#define CM0_PIPELINED_RENDER_FLUSH_DISABLE (1<<8)
#define CM0_IZ_OPT_DISABLE (1<<6)
#define CM0_ZR_OPT_DISABLE (1<<5)
#define CM0_STC_EVICT_DISABLE_LRA_SNB (1<<5)

8
drivers/gpu/drm/i915/intel_pm.c
View File

@ -3382,6 +3382,10 @@ static void ironlake_init_clock_gating(struct drm_device *dev)
I915_WRITE(_3D_CHICKEN2,
_3D_CHICKEN2_WM_READ_PIPELINED << 16 |
_3D_CHICKEN2_WM_READ_PIPELINED);
/* WaDisableRenderCachePipelinedFlush */
I915_WRITE(CACHE_MODE_0,
_MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE));
}
static void gen6_init_clock_gating(struct drm_device *dev)
@ -3716,6 +3720,10 @@ static void g4x_init_clock_gating(struct drm_device *dev)
if (IS_GM45(dev))
dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
/* WaDisableRenderCachePipelinedFlush */
I915_WRITE(CACHE_MODE_0,
_MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE));
}
static void crestline_init_clock_gating(struct drm_device *dev)