disable clearing mdi on remote cp_m for performance

Change-Id: I6a813c58ac84e9a678cb76c5346d91bbad7b8da0 Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41938 Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com> Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com> Reviewed-by: LUKE MURRAY <murrayl@us.ibm.com> Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com> Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com> Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41941 Reviewed-by: Hostboot Team <hostboot@us.ibm.com> Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com> Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
open-power · Jun 19, 2017 · 2dfa772 · 2dfa772
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commit 2dfa772
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diff --git a/src/import/chips/p9/initfiles/p9n.mca.scom.initfile b/src/import/chips/p9/initfiles/p9n.mca.scom.initfile
@@ -1097,6 +1097,12 @@ ispy MC01.PORT0.ATCL.CL.CLSCOM.MCBUSYQ_BUSY_COUNTER_THRESHOLD2 [when=S && ATTR_C
   64;
 }
 
+# Performance request: disable clearing of MDI on remte cp_m
+espy MC01.PORT0.ATCL.CL.CLSCOM.MCPERF3_ENABLE_CP_M_MDI0_LOCAL_ONLY [when=S && ATTR_CHIP_EC_FEATURE_NEW_MC_DD2_SETTINGS] {
+  spyv;
+  ON;
+}
+
 #################
 # DD2 WORKAROUNDS
 #################

diff --git a/src/import/chips/p9/procedures/hwp/initfiles/p9n_mca_scom.C b/src/import/chips/p9/procedures/hwp/initfiles/p9n_mca_scom.C
@@ -384,6 +384,8 @@ fapi2::ReturnCode p9n_mca_scom(const fapi2::Target<fapi2::TARGET_TYPE_MCA>& TGT0
                 FAPI_TRY(fapi2::getScom( TGT0, 0x501082bull, l_scom_buffer ));
 
                 l_scom_buffer.insert<45, 1, 63, uint64_t>(literal_0x8 );
+                constexpr auto l_MC01_PORT0_ATCL_CL_CLSCOM_MCPERF3_ENABLE_CP_M_MDI0_LOCAL_ONLY_ON = 0x1;
+                l_scom_buffer.insert<43, 1, 63, uint64_t>(l_MC01_PORT0_ATCL_CL_CLSCOM_MCPERF3_ENABLE_CP_M_MDI0_LOCAL_ONLY_ON );
                 constexpr auto l_MC01_PORT0_ATCL_CL_CLSCOM_MCPERF3_DISABLE_WRTO_IG_ON = 0x1;
                 l_scom_buffer.insert<44, 1, 63, uint64_t>(l_MC01_PORT0_ATCL_CL_CLSCOM_MCPERF3_DISABLE_WRTO_IG_ON );
                 constexpr auto l_MC01_PORT0_ATCL_CL_CLSCOM_MCPERF3_ENABLE_AMO_MSI_RMW_ONLY_ON = 0x1;