1/*
2 * Copyright © 2022 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23#ifndef BRW_ISA_ENCODING_H
24#define BRW_ISA_ENCODING_H
25
26#include "dev/intel_device_info.h"
27#include "brw_eu_defines.h"
28
29#ifdef __cplusplus
30extern "C" {
31#endif
32
33struct opcode_desc;
34
35struct brw_isa_info {
36   const struct intel_device_info *devinfo;
37
38   /* A mapping from enum opcode to the corresponding opcode_desc */
39   const struct opcode_desc *ir_to_descs[NUM_BRW_OPCODES];
40
41   /** A mapping from a HW opcode encoding to the corresponding opcode_desc */
42   const struct opcode_desc *hw_to_descs[128];
43};
44
45void brw_init_isa_info(struct brw_isa_info *isa,
46                       const struct intel_device_info *devinfo);
47
48struct opcode_desc {
49   unsigned ir;
50   unsigned hw;
51   const char *name;
52   int nsrc;
53   int ndst;
54   int gfx_vers;
55};
56
57const struct opcode_desc *
58brw_opcode_desc(const struct brw_isa_info *isa, enum opcode opcode);
59
60const struct opcode_desc *
61brw_opcode_desc_from_hw(const struct brw_isa_info *isa, unsigned hw);
62
63static inline unsigned
64brw_opcode_encode(const struct brw_isa_info *isa, enum opcode opcode)
65{
66   return brw_opcode_desc(isa, opcode)->hw;
67}
68
69static inline enum opcode
70brw_opcode_decode(const struct brw_isa_info *isa, unsigned hw)
71{
72   const struct opcode_desc *desc = brw_opcode_desc_from_hw(isa, hw);
73   return desc ? (enum opcode)desc->ir : BRW_OPCODE_ILLEGAL;
74}
75
76static inline bool
77is_3src(const struct brw_isa_info *isa, enum opcode opcode)
78{
79   const struct opcode_desc *desc = brw_opcode_desc(isa, opcode);
80   return desc && desc->nsrc == 3;
81}
82
83#ifdef __cplusplus
84}
85#endif
86#endif
87