pan/bi: Generate bi_opcodes.h

A header for enums for each opcode and each modifier.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8215>

src/panfrost/bifrost/bi_opcodes.h.py

@@ -0,0 +1,96 @@
+# Copyright (C) 2020 Collabora, Ltd.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice (including the next
+# paragraph) shall be included in all copies or substantial portions of the
+# Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+TEMPLATE = """
+#ifndef _BI_OPCODES_H_
+#define _BI_OPCODES_H_
+
+#include "bifrost.h"
+ 
+% for mod in sorted(modifiers):
+% if len(modifiers[mod]) > 2: # otherwise just boolean
+enum bi_${mod.lower()} {
+% for i, state in enumerate(modifiers[mod]):
+% if state != "reserved":
+    BI_${mod.upper()}_${state.upper()} = ${i},
+% endif
+% endfor
+};
+
+% endif
+% endfor
+enum bi_opcode {
+% for opcode in sorted(mnemonics):
+    BI_OPCODE_${opcode.replace('.', '_').upper()},
+% endfor
+    BI_NUM_OPCODES
+};
+
+/* Number of staging registers accessed, note this fits into 3-bits */
+
+enum bi_sr_count {
+    /* fixed counts */
+    BI_SR_COUNT_0 = 0,
+    BI_SR_COUNT_1 = 1,
+    BI_SR_COUNT_2 = 2,
+    BI_SR_COUNT_3 = 3,
+    BI_SR_COUNT_4 = 4,
+
+    /* derived from register_format and vecsize */
+    BI_SR_COUNT_FORMAT = 5,
+
+    /* equal to vecsize alone */
+    BI_SR_COUNT_VECSIZE = 6,
+
+    /* specified directly as the sr_count immediate */
+    BI_SR_COUNT_SR_COUNT = 7
+};
+
+/* Description of an opcode in the IR */
+struct bi_op_props {
+        const char *name;
+
+        enum bifrost_message_type message : 4;
+        enum bi_sr_count sr_count : 3;
+        bool sr_read : 1;
+        bool sr_write : 1;
+        bool fma : 1;
+        bool add : 1;
+};
+
+/* Generated in bi_opcodes.c.py */
+extern struct bi_op_props bi_opcode_props[BI_NUM_OPCODES];
+
+#endif
+"""
+
+import sys
+from bifrost_isa import *
+from mako.template import Template
+
+instructions = parse_instructions(sys.argv[1], include_pseudo = True)
+ir_instructions = partition_mnemonics(instructions)
+modifier_lists = order_modifiers(ir_instructions)
+
+# Generate sorted list of mnemonics without regard to unit
+mnemonics = set(x[1:] for x in instructions.keys())
+
+print(Template(COPYRIGHT + TEMPLATE).render(mnemonics = mnemonics, modifiers = modifier_lists))

src/panfrost/bifrost/meson.build

@@ -69,6 +69,20 @@ idep_bi_generated_pack_h = declare_dependency(
   include_directories : include_directories('.'),
 )
 
+bi_opcodes_h = custom_target(
+  'bi_opcodes.h',
+  input : ['bi_opcodes.h.py', 'ISA.xml'],
+  output : 'bi_opcodes.h',
+  command : [prog_python, '@INPUT@'],
+  capture : true,
+  depend_files : files('bifrost_isa.py'),
+)
+
+idep_bi_opcodes_h = declare_dependency(
+  sources : [bi_opcodes_h],
+  include_directories : include_directories('.'),
+)
+
 libpanfrost_bifrost_disasm = static_library(
   'panfrost_bifrost_disasm',
   ['disassemble.c', 'bi_print_common.c', bifrost_gen_disasm_c],
@@ -84,7 +98,7 @@ libpanfrost_bifrost = static_library(
   'panfrost_bifrost',
   [libpanfrost_bifrost_files, bifrost_nir_algebraic_c],
   include_directories : [inc_include, inc_src, inc_mapi, inc_mesa, inc_gallium, inc_gallium_aux, inc_panfrost_hw],
-  dependencies: [idep_nir, idep_bi_generated_pack_h],
+  dependencies: [idep_nir, idep_bi_generated_pack_h, idep_bi_opcodes_h],
   link_with: [libpanfrost_util, libpanfrost_bifrost_disasm],
   c_args : [no_override_init_args],
   gnu_symbol_visibility : 'hidden',