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| author |   Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2016-06-07 17:19:06 +0300 |
|---|---|---|
| committer |   Mika Kuoppala <mika.kuoppala@intel.com> | 2016-06-08 16:24:34 +0300 |
| commit | c0b730d572ea00d427f6112b17982c6b9d5e97bb (patch) | |
| tree | 6bb2c700271fc4daca541d637112f325885e20f7 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | drm/i915/kbl: Add WaDisableGamClockGating (diff) | |
| download | wireguard-linux-c0b730d572ea00d427f6112b17982c6b9d5e97bb.tar.xz wireguard-linux-c0b730d572ea00d427f6112b17982c6b9d5e97bb.zip | |
drm/i915/kbl: Add WaDisableDynamicCreditSharing
Bspec states that we need to turn off dynamic credit
sharing on kbl revid a0 and b0. This happens by writing bit 28
on 0x4ab8.
References: HSD#2225601, HSD#2226938, HSD#2225763
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-15-git-send-email-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 50379e863ae3..d1c02ed20f37 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1199,6 +1199,11 @@ static int kbl_init_workarounds(struct intel_engine_cs *engine) I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) | GEN9_GAPS_TSV_CREDIT_DISABLE)); + /* WaDisableDynamicCreditSharing:kbl */ + if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) + WA_SET_BIT(GAMT_CHKN_BIT_REG, + GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING); + /* WaDisableFenceDestinationToSLM:kbl (pre-prod) */ if (IS_KBL_REVID(dev_priv, KBL_REVID_A0, KBL_REVID_A0)) WA_SET_BIT_MASKED(HDC_CHICKEN0, |