Cregit: Linux 6.8: xe_instr

Contributors: 5
Author	Tokens	Token Proportion	Commits	Commit Proportion
Matt Roper	29	69.05%	2	33.33%
Lucas De Marchi	5	11.90%	1	16.67%
Daniele Ceraolo Spurio	4	9.52%	1	16.67%
Balasubramani Vivekanandan	3	7.14%	1	16.67%
Matthew Brost	1	2.38%	1	16.67%
Total	42		6

/* SPDX-License-Identifier: MIT */
/*
 * Copyright © 2023 Intel Corporation
 */

#ifndef _XE_INSTR_DEFS_H_
#define _XE_INSTR_DEFS_H_

#include "regs/xe_reg_defs.h"

/*
 * The first dword of any GPU instruction is the "instruction header."  Bits
 * 31:29 identify the general type of the command and determine how exact
 * opcodes and sub-opcodes will be encoded in the remaining bits.
 */
#define XE_INSTR_CMD_TYPE		GENMASK(31, 29)
#define   XE_INSTR_MI			REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x0)
#define   XE_INSTR_GSC			REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x2)
#define   XE_INSTR_GFXPIPE		REG_FIELD_PREP(XE_INSTR_CMD_TYPE, 0x3)

/*
 * Most (but not all) instructions have a "length" field in the instruction
 * header.  The value expected is the total number of dwords for the
 * instruction, minus two.
 *
 * Some instructions have length fields longer or shorter than 8 bits, but
 * those are rare.  This definition can be used for the common case where
 * the length field is from 7:0.
 */
#define XE_INSTR_LEN_MASK		GENMASK(7, 0)
#define XE_INSTR_NUM_DW(x)		REG_FIELD_PREP(XE_INSTR_LEN_MASK, (x) - 2)

#endif

xe_instr_defs.h