GBE: fix baytrail L3 cache configuration.

Reduce URB from 128KB to 64KB causes rendering artifact in X window.
I have to change it to 96KB URB and also change the RO and DC to 16KB
to satisfy the total 192KB L3 size limitation.

With this fix, the artifact is gone and utests has no new failures.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
Reviewed-by: Guo Yejun <yejun.guo@intel.com>

diff --git a/src/intel/intel_gpgpu.c b/src/intel/intel_gpgpu.c
index 9c773bd..fba480c 100644 (file)
--- a/src/intel/intel_gpgpu.c
+++ b/src/intel/intel_gpgpu.c
@@ -394,7 +394,7 @@ intel_gpgpu_set_L3_baytrail(intel_gpgpu_t *gpgpu, uint32_t use_slm)
   OUT_BATCH(gpgpu->batch, CMD_LOAD_REGISTER_IMM | 1); /* length - 2 */
   OUT_BATCH(gpgpu->batch, GEN7_L3_CNTL_REG2_ADDRESS_OFFSET);
   if (use_slm)
-    OUT_BATCH(gpgpu->batch, 0x02040001);  /* {SLM=64, URB=64, DC=32, RO=32, Sum=192} */
+    OUT_BATCH(gpgpu->batch, 0x01020021);  /* {SLM=64, URB=96, DC=16, RO=16, Sum=192} */
   else
     OUT_BATCH(gpgpu->batch, 0x02040040);  /* {SLM=0, URB=128, DC=32, RO=32, Sum=192} */