timex.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
 4 */
 5#ifndef _ASM_TIMEX_H
 6#define _ASM_TIMEX_H
 7
 8#ifdef __KERNEL__
 9
10#include <linux/compiler.h>
11
12#include <asm/cpu.h>
13#include <asm/cpu-features.h>
14
15typedef unsigned long cycles_t;
16
17#define get_cycles get_cycles
18
19static inline cycles_t get_cycles(void)
20{
21#ifdef CONFIG_32BIT
22	return rdtime_l();
23#else
24	return rdtime_d();
25#endif
26}
27
28#ifdef CONFIG_32BIT
29
30#define get_cycles_hi get_cycles_hi
31
32static inline cycles_t get_cycles_hi(void)
33{
34	return rdtime_h();
35}
36
37#endif
38
39static inline u64 get_cycles64(void)
40{
41#ifdef CONFIG_32BIT
42	u32 hi, lo;
43
44	do {
45		hi = rdtime_h();
46		lo = rdtime_l();
47	} while (hi != rdtime_h());
48
49	return ((u64)hi << 32) | lo;
50#else
51	return rdtime_d();
52#endif
53}
54
55#endif /* __KERNEL__ */
56
57#endif /*  _ASM_TIMEX_H */