From 78d2605e575d65f705b1d01bb9afe75ac6a7ea4d Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Tue, 19 Oct 2021 10:05:47 -0700
Subject: [PATCH] intel/genxml: Change 3DSTATE_CONSTANT_XS::MOCS to be MBZ on
 Gfx8.

The Broadwell PRM says: "Constant Buffer Object Control State must
always be programmed to zero."

This patch changes the MOCS field in gen8.xml to be "mbz" type, so that
it's impossible to set it to a non-zero value.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13480>
---
 src/intel/genxml/gen8.xml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/intel/genxml/gen8.xml b/src/intel/genxml/gen8.xml
index 0447efc7d8e..ffc05db3b23 100644
--- a/src/intel/genxml/gen8.xml
+++ b/src/intel/genxml/gen8.xml
@@ -1049,7 +1049,7 @@
 
   <instruction name="3DSTATE_CONSTANT_DS" bias="2" length="11" engine="render">
     <field name="DWord Length" start="0" end="7" type="uint" default="9"/>
-    <field name="MOCS" start="8" end="14" type="uint"/>
+    <field name="MOCS" start="8" end="14" type="mbz"/>
     <field name="3D Command Sub Opcode" start="16" end="23" type="uint" default="26"/>
     <field name="3D Command Opcode" start="24" end="26" type="uint" default="0"/>
     <field name="Command SubType" start="27" end="28" type="uint" default="3"/>
@@ -1059,7 +1059,7 @@
 
   <instruction name="3DSTATE_CONSTANT_GS" bias="2" length="11" engine="render">
     <field name="DWord Length" start="0" end="7" type="uint" default="9"/>
-    <field name="MOCS" start="8" end="14" type="uint"/>
+    <field name="MOCS" start="8" end="14" type="mbz"/>
     <field name="3D Command Sub Opcode" start="16" end="23" type="uint" default="22"/>
     <field name="3D Command Opcode" start="24" end="26" type="uint" default="0"/>
     <field name="Command SubType" start="27" end="28" type="uint" default="3"/>
@@ -1069,7 +1069,7 @@
 
   <instruction name="3DSTATE_CONSTANT_HS" bias="2" length="11" engine="render">
     <field name="DWord Length" start="0" end="7" type="uint" default="9"/>
-    <field name="MOCS" start="8" end="14" type="uint"/>
+    <field name="MOCS" start="8" end="14" type="mbz"/>
     <field name="3D Command Sub Opcode" start="16" end="23" type="uint" default="25"/>
     <field name="3D Command Opcode" start="24" end="26" type="uint" default="0"/>
     <field name="Command SubType" start="27" end="28" type="uint" default="3"/>
@@ -1079,7 +1079,7 @@
 
   <instruction name="3DSTATE_CONSTANT_PS" bias="2" length="11" engine="render">
     <field name="DWord Length" start="0" end="7" type="uint" default="9"/>
-    <field name="MOCS" start="8" end="14" type="uint"/>
+    <field name="MOCS" start="8" end="14" type="mbz"/>
     <field name="3D Command Sub Opcode" start="16" end="23" type="uint" default="23"/>
     <field name="3D Command Opcode" start="24" end="26" type="uint" default="0"/>
     <field name="Command SubType" start="27" end="28" type="uint" default="3"/>
@@ -1089,7 +1089,7 @@
 
   <instruction name="3DSTATE_CONSTANT_VS" bias="2" length="11" engine="render">
     <field name="DWord Length" start="0" end="7" type="uint" default="9"/>
-    <field name="MOCS" start="8" end="14" type="uint"/>
+    <field name="MOCS" start="8" end="14" type="mbz"/>
     <field name="3D Command Sub Opcode" start="16" end="23" type="uint" default="21"/>
     <field name="3D Command Opcode" start="24" end="26" type="uint" default="0"/>
     <field name="Command SubType" start="27" end="28" type="uint" default="3"/>