delay.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * ARM simple delay routines
 4 */
 5
 6#ifndef SELFTEST_KVM_ARM_DELAY_H
 7#define SELFTEST_KVM_ARM_DELAY_H
 8
 9#include "arch_timer.h"
10
11static inline void __delay(uint64_t cycles)
12{
13	enum arch_timer timer = VIRTUAL;
14	uint64_t start = timer_get_cntct(timer);
15
16	while ((timer_get_cntct(timer) - start) < cycles)
17		cpu_relax();
18}
19
20static inline void udelay(unsigned long usec)
21{
22	__delay(usec_to_cycles(usec));
23}
24
25#endif /* SELFTEST_KVM_ARM_DELAY_H */