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.siluv...@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuopp...@intel.com>
Reviewed-by: Matthew Auld <matthew.a...@intel.com>
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 228c3f75d3c5..02edf85f7456 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1188,12 +1188,17 @@ 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->i915;
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;
}
--
2.7.4
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