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/*
* Copyright (C) 2012-2015 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.
*/
/**
* @file mali_sync.h
*
* Mali interface for Linux sync objects.
*/
#ifndef _MALI_SYNC_H_
#define _MALI_SYNC_H_
#if defined(CONFIG_SYNC)
#include <linux/seq_file.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
#include <linux/sync.h>
#else
#include <sync.h>
#endif
#include "mali_osk.h"
struct mali_sync_flag;
struct mali_timeline;
/**
* Create a sync timeline.
*
* @param name Name of the sync timeline.
* @return The new sync timeline if successful, NULL if not.
*/
struct sync_timeline *mali_sync_timeline_create(struct mali_timeline *timeline, const char *name);
/**
* Creates a file descriptor representing the sync fence. Will release sync fence if allocation of
* file descriptor fails.
*
* @param sync_fence Sync fence.
* @return File descriptor representing sync fence if successful, or -1 if not.
*/
s32 mali_sync_fence_fd_alloc(struct sync_fence *sync_fence);
/**
* Merges two sync fences. Both input sync fences will be released.
*
* @param sync_fence1 First sync fence.
* @param sync_fence2 Second sync fence.
* @return New sync fence that is the result of the merger if successful, or NULL if not.
*/
struct sync_fence *mali_sync_fence_merge(struct sync_fence *sync_fence1, struct sync_fence *sync_fence2);
/**
* Create a sync fence that is already signaled.
*
* @param tl Sync timeline.
* @return New signaled sync fence if successful, NULL if not.
*/
struct sync_fence *mali_sync_timeline_create_signaled_fence(struct sync_timeline *sync_tl);
/**
* Create a sync flag.
*
* @param sync_tl Sync timeline.
* @param point Point on Mali timeline.
* @return New sync flag if successful, NULL if not.
*/
struct mali_sync_flag *mali_sync_flag_create(struct sync_timeline *sync_tl, u32 point);
/**
* Grab sync flag reference.
*
* @param flag Sync flag.
*/
void mali_sync_flag_get(struct mali_sync_flag *flag);
/**
* Release sync flag reference. If this was the last reference, the sync flag will be freed.
*
* @param flag Sync flag.
*/
void mali_sync_flag_put(struct mali_sync_flag *flag);
/**
* Signal sync flag. All sync fences created from this flag will be signaled.
*
* @param flag Sync flag to signal.
* @param error Negative error code, or 0 if no error.
*/
void mali_sync_flag_signal(struct mali_sync_flag *flag, int error);
/**
* Create a sync fence attached to given sync flag.
*
* @param flag Sync flag.
* @return New sync fence if successful, NULL if not.
*/
struct sync_fence *mali_sync_flag_create_fence(struct mali_sync_flag *flag);
#endif /* defined(CONFIG_SYNC) */
#endif /* _MALI_SYNC_H_ */
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