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[6/8] drm/i915/skl: Add GEN8_L3SQCREG4 to HW whitelist

Message ID 1452679593-3922-7-git-send-email-arun.siluvery@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

arun.siluvery@linux.intel.com Jan. 13, 2016, 10:06 a.m. UTC 
Required for WaDisableLSQCROPERFforOCL:skl

Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Nick Hoath Jan. 21, 2016, 12:14 p.m. UTC | #1 
On 13/01/2016 10:06, Arun Siluvery wrote:
> Required for WaDisableLSQCROPERFforOCL:skl
>
> Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>

Reviewed-by: Nick Hoath <nicholas.hoath@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 5eb4eea..b8dbd2c 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -1097,6 +1097,11 @@ static int skl_init_workarounds(struct intel_engine_cs *ring)
>   			GEN7_HALF_SLICE_CHICKEN1,
>   			GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
>
> +	/* WaDisableLSQCROPERFforOCL:skl */
> +	ret = wa_ring_whitelist_reg(ring, GEN8_L3SQCREG4);
> +	if (ret)
> +		return ret;
> +
>   	return skl_tune_iz_hashing(ring);
>   }
>
>
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Patch

diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 5eb4eea..b8dbd2c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1097,6 +1097,11 @@  static int skl_init_workarounds(struct intel_engine_cs *ring)
 			GEN7_HALF_SLICE_CHICKEN1,
 			GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
 
+	/* WaDisableLSQCROPERFforOCL:skl */
+	ret = wa_ring_whitelist_reg(ring, GEN8_L3SQCREG4);
+	if (ret)
+		return ret;
+
 	return skl_tune_iz_hashing(ring);
 }