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drm/i915: set stc evict disable lra evict w/a

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Our workaround list kindly lists that this new default value needs to
be updated in Bspec. Naturally, this did not happen.

Acked-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-04-11 20:42:42 +02:00
parent bf97b276ca
commit 009be664ec
2 changed files with 5 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -639,6 +639,7 @@
#define CM0_MASK_SHIFT 16
#define CM0_IZ_OPT_DISABLE (1<<6)
#define CM0_ZR_OPT_DISABLE (1<<5)
#define CM0_STC_EVICT_DISABLE_LRA_SNB (1<<5)
#define CM0_DEPTH_EVICT_DISABLE (1<<4)
#define CM0_COLOR_EVICT_DISABLE (1<<3)
#define CM0_DEPTH_WRITE_DISABLE (1<<1)

4
drivers/gpu/drm/i915/intel_display.c
View File

@ -8878,6 +8878,10 @@ static void gen6_init_clock_gating(struct drm_device *dev)
I915_WRITE(WM2_LP_ILK, 0);
I915_WRITE(WM1_LP_ILK, 0);
/* clear masked bit */
I915_WRITE(CACHE_MODE_0,
CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT);
I915_WRITE(GEN6_UCGCTL1,
I915_READ(GEN6_UCGCTL1) |
GEN6_BLBUNIT_CLOCK_GATE_DISABLE |