/*
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* Copyright (C) 2012-2015, 2017-2018 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* @file mali_internal_sync.h
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*
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* Mali internal structure/interface for sync.
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*/
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#ifndef _MALI_INTERNAL_SYNC_H
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#define _MALI_INTERNAL_SYNC_H
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#include <linux/version.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)
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#include <linux/types.h>
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#include <linux/kref.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0)
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#include <sync.h>
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#else
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#include <linux/sync_file.h>
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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#include <linux/dma-fence.h>
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#else
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#include <linux/fence.h>
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
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#include <linux/fence-array.h>
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#else
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#include <linux/dma-fence-array.h>
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#endif
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#endif
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struct mali_internal_sync_timeline;
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struct mali_internal_sync_point;
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struct mali_internal_sync_fence;
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struct mali_internal_sync_timeline_ops {
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const char *driver_name;
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int (*has_signaled)(struct mali_internal_sync_point *pt);
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void (*free_pt)(struct mali_internal_sync_point *sync_pt);
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void (*release_obj)(struct mali_internal_sync_timeline *sync_timeline);
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void (*print_sync_pt)(struct mali_internal_sync_point *sync_pt);
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};
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struct mali_internal_sync_timeline {
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struct kref kref_count;
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const struct mali_internal_sync_timeline_ops *ops;
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char name[32];
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bool destroyed;
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int fence_context;
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int value;
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spinlock_t sync_pt_list_lock;
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struct list_head sync_pt_list_head;
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};
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struct mali_internal_sync_point {
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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struct dma_fence base;
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#else
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struct fence base;
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#endif
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struct list_head sync_pt_list;
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};
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
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struct mali_internal_sync_fence_cb {
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struct fence_cb cb;
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struct fence *fence;
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struct mali_internal_sync_fence *sync_file;
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};
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#endif
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struct mali_internal_sync_fence {
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struct file *file;
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0)
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struct kref kref;
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#endif
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char name[32];
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#ifdef CONFIG_DEBUG_FS
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struct list_head sync_file_list;
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
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int num_fences;
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#endif
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wait_queue_head_t wq;
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#if LINUX_VERSION_CODE > KERNEL_VERSION(4, 12, 0)
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unsigned long flags;
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
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atomic_t status;
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struct mali_internal_sync_fence_cb cbs[];
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#elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
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struct fence *fence;
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struct fence_cb cb;
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#else
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struct dma_fence *fence;
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struct dma_fence_cb cb;
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#endif
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};
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struct mali_internal_sync_fence_waiter;
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typedef void (*mali_internal_sync_callback_t)(struct mali_internal_sync_fence *sync_fence,
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struct mali_internal_sync_fence_waiter *waiter);
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struct mali_internal_sync_fence_waiter {
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 13, 0)
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wait_queue_entry_t work;
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#else
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wait_queue_t work;
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#endif
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mali_internal_sync_callback_t callback;
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0)
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
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struct fence_cb cb;
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#else
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struct dma_fence_cb cb;
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#endif
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#endif
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};
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/**
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* Create a mali internal sync timeline.
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* @param ops The implementation ops for the mali internal sync timeline
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* @param size The size to allocate
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* @param name The sync_timeline name
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* @return The new mali internal sync timeline if successful, NULL if not.
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*/
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struct mali_internal_sync_timeline *mali_internal_sync_timeline_create(const struct mali_internal_sync_timeline_ops *ops,
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int size, const char *name);
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/**
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* Destroy one mali internal sync timeline.
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* @param sync_timeline The mali internal sync timeline to destroy.
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*/
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void mali_internal_sync_timeline_destroy(struct mali_internal_sync_timeline *sync_timeline);
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/**
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* Signal one mali internal sync timeline.
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* @param sync_timeline The mali internal sync timeline to signal.
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*/
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void mali_internal_sync_timeline_signal(struct mali_internal_sync_timeline *sync_timeline);
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/**
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* Create one mali internal sync point.
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* @param sync_timeline The mali internal sync timeline to add this mali internal sync point.
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* @return the new mali internal sync point if successful, NULL if not.
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*/
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struct mali_internal_sync_point *mali_internal_sync_point_create(struct mali_internal_sync_timeline *sync_timeline, int size);
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/**
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* Merge mali internal sync fences
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* @param sync_fence1 The mali internal sync fence to merge
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* @param sync_fence2 The mali internal sync fence to merge
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* @return the new mali internal sync fence if successful, NULL if not.
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*/
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struct mali_internal_sync_fence *mali_internal_sync_fence_merge(struct mali_internal_sync_fence *sync_fence1,
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struct mali_internal_sync_fence *sync_fence2);
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/**
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* Get the mali internal sync fence from sync fd
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* @param fd The sync handle to get the mali internal sync fence
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* @return the mali internal sync fence if successful, NULL if not.
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*/
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struct mali_internal_sync_fence *mali_internal_sync_fence_fdget(int fd);
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void mali_internal_sync_fence_waiter_init(struct mali_internal_sync_fence_waiter *waiter,
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mali_internal_sync_callback_t callback);
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int mali_internal_sync_fence_wait_async(struct mali_internal_sync_fence *sync_fence,
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struct mali_internal_sync_fence_waiter *waiter);
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int mali_internal_sync_fence_cancel_async(struct mali_internal_sync_fence *sync_fence,
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struct mali_internal_sync_fence_waiter *waiter);
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#endif /*LINUX_VERSION_CODE >= KERNEL_VERSION(4, 6, 0)*/
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#endif /* _MALI_INTERNAL_SYNC_H */
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