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- /*
- * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * Neither the name of ARM nor the names of its contributors may be used
- * to endorse or promote products derived from this software without specific
- * prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
- #ifndef __BAKERY_LOCK_H__
- #define __BAKERY_LOCK_H__
- #include <platform.h>
- #define BAKERY_LOCK_MAX_CPUS PLATFORM_CORE_COUNT
- #ifndef __ASSEMBLY__
- typedef struct {
- int owner;
- volatile char entering[BAKERY_LOCK_MAX_CPUS];
- volatile unsigned number[BAKERY_LOCK_MAX_CPUS];
- } bakery_lock;
- #define NO_OWNER (-1)
- void bakery_lock_init(bakery_lock *bakery);
- void bakery_lock_get(unsigned long mpidr, bakery_lock *bakery);
- void bakery_lock_release(unsigned long mpidr, bakery_lock *bakery);
- int bakery_lock_try(unsigned long mpidr, bakery_lock *bakery);
- #endif /*__ASSEMBLY__*/
- #endif /* __BAKERY_LOCK_H__ */
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