64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef _I915_ACTIVE_TYPES_H_
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#define _I915_ACTIVE_TYPES_H_
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#include <linux/atomic.h>
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#include <linux/llist.h>
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#include <linux/mutex.h>
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#include <linux/rbtree.h>
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#include <linux/rcupdate.h>
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struct drm_i915_private;
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struct i915_active_request;
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struct i915_request;
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typedef void (*i915_active_retire_fn)(struct i915_active_request *,
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struct i915_request *);
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struct i915_active_request {
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struct i915_request __rcu *request;
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struct list_head link;
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i915_active_retire_fn retire;
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)
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/*
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* Incorporeal!
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*
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* Updates to the i915_active_request must be serialised under a lock
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* to ensure that the timeline is ordered. Normally, this is the
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* timeline->mutex, but another mutex may be used so long as it is
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* done so consistently.
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*
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* For lockdep tracking of the above, we store the lock we intend
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* to always use for updates of this i915_active_request during
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* construction and assert that is held on every update.
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*/
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struct mutex *lock;
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#endif
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};
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struct active_node;
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struct i915_active {
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struct drm_i915_private *i915;
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struct active_node *cache;
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struct rb_root tree;
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struct mutex mutex;
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atomic_t count;
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unsigned long flags;
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#define I915_ACTIVE_GRAB_BIT 0
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int (*active)(struct i915_active *ref);
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void (*retire)(struct i915_active *ref);
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struct llist_head preallocated_barriers;
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};
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#endif /* _I915_ACTIVE_TYPES_H_ */
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