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drm/i915/kbl: Add WaEnableGapsTsvCreditFix

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We need this crucial workaround from skl also to all kbl revisions.
Lack of it was causing system hangs on skl enabling so this is
a must have.

v2: Don't add revid checks to gen9 init workarounds (Arun)

References: HSD#2126660
Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-8-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit e587f6cb0a)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
This commit is contained in:
Mika Kuoppala 2016-06-07 17:18:59 +03:00 committed by Mika Kuoppala
parent 60f452e614
commit 7916450982
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_ringbuffer.c
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@ -1191,12 +1191,17 @@ static int bxt_init_workarounds(struct intel_engine_cs *engine)
static int kbl_init_workarounds(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->dev->dev_private;
int ret;
ret = gen9_init_workarounds(engine);
if (ret)
return ret;
/* WaEnableGapsTsvCreditFix:kbl */
I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
GEN9_GAPS_TSV_CREDIT_DISABLE));
return 0;
}