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/llist.h>
  12 #include <linux/mutex.h>
  13 #include <linux/rbtree.h>
  14 #include <linux/rcupdate.h>
  15
  16 struct drm_i915_private;
  17 struct i915_active_request;
  18 struct i915_request;
  19
  20 typedef void (*i915_active_retire_fn)(struct i915_active_request *,
  21                                       struct i915_request *);
  22
  23 struct i915_active_request {
  24         struct i915_request __rcu *request;
  25         struct list_head link;
  26         i915_active_retire_fn retire;
  27 };
  28
  29 struct active_node;
  30
  31 struct i915_active {
  32         struct drm_i915_private *i915;
  33
  34         struct active_node *cache;
  35         struct rb_root tree;
  36         struct mutex mutex;
  37         atomic_t count;
  38
  39         int (*active)(struct i915_active *ref);
  40         void (*retire)(struct i915_active *ref);
  41
  42         struct llist_head barriers;
  43 };
  44
  45 #endif /* _I915_ACTIVE_TYPES_H_ */