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 #include "i915_utils.h"
  19
  20 struct i915_active_fence {
  21         struct dma_fence __rcu *fence;
  22         struct dma_fence_cb cb;
  23 };
  24
  25 struct active_node;
  26
  27 struct i915_active {
  28         atomic_t count;
  29         struct mutex mutex;
  30
  31         spinlock_t tree_lock;
  32         struct active_node *cache;
  33         struct rb_root tree;
  34
  35         /* Preallocated "exclusive" node */
  36         struct i915_active_fence excl;
  37
  38         unsigned long flags;
  39 #define I915_ACTIVE_RETIRE_SLEEPS BIT(0)
  40
  41         int (*active)(struct i915_active *ref);
  42         void (*retire)(struct i915_active *ref);
  43
  44         struct work_struct work;
  45
  46         struct llist_head preallocated_barriers;
  47 };
  48
  49 #endif /* _I915_ACTIVE_TYPES_H_ */