62 lines
1.7 KiB
C
Executable File
62 lines
1.7 KiB
C
Executable File
// Copyright 2020-2022 Beken
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef _spinlock_h_
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#define _spinlock_h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <common/bk_typedef.h>
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typedef struct {
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uint32_t owner;
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uint16_t count;
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uint16_t core_id;
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} spinlock_t;
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#define SPIN_LOCK_FREE (0xF2EEF2EE)
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#define SPIN_LOCK_INIT {.owner = SPIN_LOCK_FREE, .count = 0}
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void spinlock_init(spinlock_t *slock);
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uint32_t spinlock_acquire(volatile spinlock_t *slock);
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void spinlock_release(volatile spinlock_t *slock, uint32_t flag);
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/* similiar with linux spin lock API */
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/* NOTE: !!! lock must located in shared memory */
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void spin_lock_init(spinlock_t *lock);
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void spin_lock(volatile spinlock_t *lock);
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void spin_unlock(volatile spinlock_t *lock);
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/* spin_trylock: 0: spin lock failed, 1: spin lock success */
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int spin_trylock(volatile spinlock_t *lock);
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#define spin_lock_irqsave(lock, flags) \
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do { \
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flags = _spin_lock_irqsave(lock); \
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} while (0)
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#define spin_unlock_irqrestore(lock, flags) \
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do { \
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_spin_unlock_irqrestore(lock, flags); \
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} while (0)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _spinlock_h_ */
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