1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (c) 2013-2018, Arm Limited and Contributors. All rights reserved. 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu */ 6*91f16700Schasinglulu 7*91f16700Schasinglulu #ifndef SPINLOCK_H 8*91f16700Schasinglulu #define SPINLOCK_H 9*91f16700Schasinglulu 10*91f16700Schasinglulu #ifndef __ASSEMBLER__ 11*91f16700Schasinglulu 12*91f16700Schasinglulu #include <stdint.h> 13*91f16700Schasinglulu 14*91f16700Schasinglulu typedef struct spinlock { 15*91f16700Schasinglulu volatile uint32_t lock; 16*91f16700Schasinglulu } spinlock_t; 17*91f16700Schasinglulu 18*91f16700Schasinglulu void spin_lock(spinlock_t *lock); 19*91f16700Schasinglulu void spin_unlock(spinlock_t *lock); 20*91f16700Schasinglulu 21*91f16700Schasinglulu #else 22*91f16700Schasinglulu 23*91f16700Schasinglulu /* Spin lock definitions for use in assembly */ 24*91f16700Schasinglulu #define SPINLOCK_ASM_ALIGN 2 25*91f16700Schasinglulu #define SPINLOCK_ASM_SIZE 4 26*91f16700Schasinglulu 27*91f16700Schasinglulu #endif 28*91f16700Schasinglulu 29*91f16700Schasinglulu #endif /* SPINLOCK_H */ 30