From b216fd044bca400aab12e24fbdacc4e70953890c Mon Sep 17 00:00:00 2001
From: Christian Gmeiner <cgmeiner@igalia.com>
Date: Mon, 4 Mar 2024 12:36:23 +0100
Subject: [PATCH] etnaviv: isa: Add encode support

Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28183>
---
 src/etnaviv/isa/etnaviv.xml | 61 +++++++++++++++++++++++++++++++++++++
 src/etnaviv/isa/meson.build | 11 +++++++
 2 files changed, 72 insertions(+)

diff --git a/src/etnaviv/isa/etnaviv.xml b/src/etnaviv/isa/etnaviv.xml
index eca8241a223..c9a3ebe0a40 100644
--- a/src/etnaviv/isa/etnaviv.xml
+++ b/src/etnaviv/isa/etnaviv.xml
@@ -125,6 +125,13 @@ SPDX-License-Identifier: MIT
 	<field name="AMODE" low="0" high="2" type="#reg_addressing_mode"/>
 	<field name="REG" low="3" high="9" type="uint"/>
 	<field name="COMPS" low="10" high="13" type="#wrmask"/>
+
+	<encode type="struct etna_inst_dst *">
+		<map name="DST_USE">p->DST_USE</map>
+		<map name="AMODE">src->amode</map>
+		<map name="REG">src->reg</map>
+		<map name="COMPS">p->COMPS</map>
+	</encode>
 </bitset>
 
 <bitset name="#instruction" size="128">
@@ -137,6 +144,46 @@ SPDX-License-Identifier: MIT
 	<derived name="TYPE" type="#type">
 		<expr>{TYPE_BIT2} &lt;&lt; 2 | {TYPE_BIT01}</expr>
 	</derived>
+
+	<encode type="struct etna_inst *" case-prefix="ISA_OPC_">
+		<map name="TYPE_BIT01">src->type &amp; 0x3</map>
+		<map name="TYPE_BIT2">(src->type &amp; 0x4) &gt; 2</map>
+		<map name="LOW_HALF">src->sel_bit0</map>
+		<map name="HIGH_HALF">src->sel_bit1</map>
+		<map name="COND">src->cond</map>
+		<map name="RMODE">src->rounding</map>
+		<map name="SAT">src->sat</map>
+		<map name="DST_USE">src->dst.use</map>
+		<map name="DST">&amp;src->dst</map>
+		<map name="DST_FULL">src->dst_full</map>
+		<map name="COMPS">src->dst.write_mask</map>
+		<map name="SRC0">&amp;src->src[0]</map>
+		<map name="SRC0_USE">src->src[0].use</map>
+		<map name="SRC0_REG">src->src[0].reg</map>
+		<map name="SRC0_RGROUP">src->src[0].rgroup</map>
+		<map name="SRC0_AMODE">src->src[0].amode</map>
+		<map name="SRC1">&amp;src->src[1]</map>
+		<map name="SRC1_USE">src->src[1].use</map>
+		<map name="SRC1_REG">src->src[1].reg</map>
+		<map name="SRC1_RGROUP">src->src[1].rgroup</map>
+		<map name="SRC1_AMODE">src->src[1].amode</map>
+		<map name="SRC2">&amp;src->src[2]</map>
+		<map name="SRC2_USE">rc->src[2].use</map>
+		<map name="SRC2_REG">src->src[2].reg</map>
+		<map name="SRC2_RGROUP">src->src[2].rgroup</map>
+		<map name="SRC2_AMODE">src->src[2].amode</map>
+
+		<map name="TEX_ID">src->tex.id</map>
+		<map name="TEX_SWIZ">src->tex.swiz</map>
+		<map name="TARGET">src->imm</map>
+
+		<!-- sane defaults -->
+		<map name="PMODE">1</map>
+		<map name="SKPHP">0</map>
+		<map name="LOCAL">0</map>
+		<map name="DENORM">0</map>
+		<map name="LEFT_SHIFT">0</map>
+	</encode>
 </bitset>
 
 <bitset name="#src-swizzle" size="8">
@@ -148,6 +195,13 @@ SPDX-License-Identifier: MIT
 	<field name="SWIZ_Y" low="2" high="3" type="#swiz"/>
 	<field name="SWIZ_Z" low="4" high="5" type="#swiz"/>
 	<field name="SWIZ_W" low="6" high="7" type="#swiz"/>
+
+	<encode type="uint8_t">
+		<map name="SWIZ_X">(src &amp; 0x03) &gt;&gt; 0</map>
+		<map name="SWIZ_Y">(src &amp; 0x0c) &gt;&gt; 2</map>
+		<map name="SWIZ_Z">(src &amp; 0x30) &gt;&gt; 4</map>
+		<map name="SWIZ_W">(src &amp; 0xc0) &gt;&gt; 6</map>
+	</encode>
 </bitset>
 
 <enum name="#thread">
@@ -272,6 +326,13 @@ SPDX-License-Identifier: MIT
 			</expr>
 		</derived>
 	</override>
+
+	<encode type="struct etna_inst_src *">
+		<map name="SRC_SWIZ">src->swiz</map>
+		<map name="SRC_NEG">src->neg</map>
+		<map name="SRC_ABS">src->abs</map>
+		<map name="SRC_RGROUP">p->SRC_RGROUP</map>
+	</encode>
 </bitset>
 
 <bitset name="#instruction-alu-no-src" extends="#instruction-alu">
diff --git a/src/etnaviv/isa/meson.build b/src/etnaviv/isa/meson.build
index 4d77a2c0399..ee5bd091c5e 100644
--- a/src/etnaviv/isa/meson.build
+++ b/src/etnaviv/isa/meson.build
@@ -56,8 +56,19 @@ enums_h = custom_target(
   depend_files: isa_depend_files,
 )
 
+encode_h = custom_target(
+  'encode.h',
+  input: ['etnaviv.xml'],
+  output: 'encode.h',
+  command: [
+    prog_isaspec_encode, '--xml', '@INPUT@', '--out-h', '@OUTPUT@'
+  ],
+  depend_files: isa_depend_files,
+)
+
 encode_files = [
   enums_h,
+  encode_h,
   'encode.c',
 ]