1/*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright �� 2019 Intel Corporation
5 */
6
7#ifndef _I915_ACTIVE_TYPES_H_
8#define _I915_ACTIVE_TYPES_H_
9
10#include <linux/atomic.h>
11#include <linux/dma-fence.h>
12#include <linux/llist.h>
13#include <linux/mutex.h>
14#include <linux/rbtree.h>
15#include <linux/rcupdate.h>
16#include <linux/workqueue.h>
17
18struct i915_active_fence {
19	struct dma_fence __rcu *fence;
20	struct dma_fence_cb cb;
21};
22
23struct active_node;
24
25struct i915_active {
26	atomic_t count;
27	struct mutex mutex;
28
29	spinlock_t tree_lock;
30	struct active_node *cache;
31	struct rb_root tree;
32
33	/* Preallocated "exclusive" node */
34	struct i915_active_fence excl;
35
36	unsigned long flags;
37#define I915_ACTIVE_RETIRE_SLEEPS BIT(0)
38
39	int (*active)(struct i915_active *ref);
40	void (*retire)(struct i915_active *ref);
41
42	struct work_struct work;
43
44	struct llist_head preallocated_barriers;
45};
46
47#endif /* _I915_ACTIVE_TYPES_H_ */
48