34 lines
615 B
C
34 lines
615 B
C
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/*
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* Copyright (c) 2018 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#ifndef __RISCV_LOCKS_H__
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#define __RISCV_LOCKS_H__
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typedef struct {
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volatile long lock;
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} spinlock_t;
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#define __RISCV_SPIN_UNLOCKED 0
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#define SPIN_LOCK_INIT(_lptr) \
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(_lptr)->lock = __RISCV_SPIN_UNLOCKED
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#define SPIN_LOCK_INITIALIZER \
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{ .lock = __RISCV_SPIN_UNLOCKED, }
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int spin_lock_check(spinlock_t *lock);
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int spin_trylock(spinlock_t *lock);
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void spin_lock(spinlock_t *lock);
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void spin_unlock(spinlock_t *lock);
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#endif
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