/*
|
* Copyright (C) 2013, 2016-2017 ARM Limited. All rights reserved.
|
*
|
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
|
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
|
*
|
* A copy of the licence is included with the program, and can also be obtained from Free Software
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
*/
|
|
#ifndef __MALI_SPINLOCK_REENTRANT_H__
|
#define __MALI_SPINLOCK_REENTRANT_H__
|
|
#include "mali_osk.h"
|
#include "mali_kernel_common.h"
|
|
/**
|
* Reentrant spinlock.
|
*/
|
struct mali_spinlock_reentrant {
|
_mali_osk_spinlock_irq_t *lock;
|
u32 owner;
|
u32 counter;
|
};
|
|
/**
|
* Create a new reentrant spinlock.
|
*
|
* @param lock_order Lock order.
|
* @return New reentrant spinlock.
|
*/
|
struct mali_spinlock_reentrant *mali_spinlock_reentrant_init(_mali_osk_lock_order_t lock_order);
|
|
/**
|
* Terminate reentrant spinlock and free any associated resources.
|
*
|
* @param spinlock Reentrant spinlock to terminate.
|
*/
|
void mali_spinlock_reentrant_term(struct mali_spinlock_reentrant *spinlock);
|
|
/**
|
* Wait for reentrant spinlock to be signaled.
|
*
|
* @param spinlock Reentrant spinlock.
|
* @param tid Thread ID.
|
*/
|
void mali_spinlock_reentrant_wait(struct mali_spinlock_reentrant *spinlock, u32 tid);
|
|
/**
|
* Signal reentrant spinlock.
|
*
|
* @param spinlock Reentrant spinlock.
|
* @param tid Thread ID.
|
*/
|
void mali_spinlock_reentrant_signal(struct mali_spinlock_reentrant *spinlock, u32 tid);
|
|
/**
|
* Check if thread is holding reentrant spinlock.
|
*
|
* @param spinlock Reentrant spinlock.
|
* @param tid Thread ID.
|
* @return MALI_TRUE if thread is holding spinlock, MALI_FALSE if not.
|
*/
|
MALI_STATIC_INLINE mali_bool mali_spinlock_reentrant_is_held(struct mali_spinlock_reentrant *spinlock, u32 tid)
|
{
|
MALI_DEBUG_ASSERT_POINTER(spinlock->lock);
|
return (tid == spinlock->owner && 0 < spinlock->counter);
|
}
|
|
#endif /* __MALI_SPINLOCK_REENTRANT_H__ */
|
