| 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 | |
| 18 | struct i915_active_fence { |
| 19 | struct dma_fence __rcu *fence; |
| 20 | struct dma_fence_cb cb; |
| 21 | }; |
| 22 | |
| 23 | struct active_node; |
| 24 | |
| 25 | struct 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 |