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
11 static 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
20 static inline void udelay(unsigned long usec)
21 {
22 __delay(usec_to_cycles(usec));
23 }
24
25 #endif /* SELFTEST_KVM_ARM_DELAY_H */
26
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