drivers/gpu/drm/i915/i915_active_types.h

   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_ */