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author | Anup Patel <anup.patel@wdc.com> | 2018-12-11 16:54:06 +0300 |
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committer | Anup Patel <anup@brainfault.org> | 2018-12-11 16:54:06 +0300 |
commit | 9e8ff05cb61f157fb0bcb6b0071d7b6dc0763faa (patch) | |
tree | b9513a86b3b36e569cb46387846fee9c5544f566 /include/sbi/riscv_locks.h | |
download | opensbi-9e8ff05cb61f157fb0bcb6b0071d7b6dc0763faa.tar.xz |
Initial commit.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'include/sbi/riscv_locks.h')
-rw-r--r-- | include/sbi/riscv_locks.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/sbi/riscv_locks.h b/include/sbi/riscv_locks.h new file mode 100644 index 0000000..4a683d9 --- /dev/null +++ b/include/sbi/riscv_locks.h @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2018 Western Digital Corporation or its affiliates. + * + * Authors: + * Anup Patel <anup.patel@wdc.com> + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#ifndef __RISCV_LOCKS_H__ +#define __RISCV_LOCKS_H__ + +typedef struct { + volatile long lock; +} spinlock_t; + +#define __RISCV_SPIN_UNLOCKED 0 + +#define SPIN_LOCK_INIT(_lptr) \ + (_lptr)->lock = __RISCV_SPIN_UNLOCKED + +#define SPIN_LOCK_INITIALIZER \ + { .lock = __RISCV_SPIN_UNLOCKED, } + +int spin_lock_check(spinlock_t *lock); + +int spin_trylock(spinlock_t *lock); + +void spin_lock(spinlock_t *lock); + +void spin_unlock(spinlock_t *lock); + +#endif |