2 * Copyright © 2016 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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25 #ifndef I915_TIMELINE_H
26 #define I915_TIMELINE_H
28 #include <linux/lockdep.h>
30 #include "i915_active.h"
31 #include "i915_syncmap.h"
32 #include "gt/intel_timeline_types.h"
34 struct intel_timeline *
35 intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp);
37 static inline struct intel_timeline *
38 intel_timeline_get(struct intel_timeline *timeline)
40 kref_get(&timeline->kref);
44 void __intel_timeline_free(struct kref *kref);
45 static inline void intel_timeline_put(struct intel_timeline *timeline)
47 kref_put(&timeline->kref, __intel_timeline_free);
50 static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
51 u64 context, u32 seqno)
53 return i915_syncmap_set(&tl->sync, context, seqno);
56 static inline int intel_timeline_sync_set(struct intel_timeline *tl,
57 const struct dma_fence *fence)
59 return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
62 static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
63 u64 context, u32 seqno)
65 return i915_syncmap_is_later(&tl->sync, context, seqno);
68 static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
69 const struct dma_fence *fence)
71 return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
74 int intel_timeline_pin(struct intel_timeline *tl);
75 void intel_timeline_enter(struct intel_timeline *tl);
76 int intel_timeline_get_seqno(struct intel_timeline *tl,
77 struct i915_request *rq,
79 void intel_timeline_exit(struct intel_timeline *tl);
80 void intel_timeline_unpin(struct intel_timeline *tl);
82 void intel_timeline_reset_seqno(const struct intel_timeline *tl);
84 int intel_timeline_read_hwsp(struct i915_request *from,
85 struct i915_request *until,
88 void intel_gt_init_timelines(struct intel_gt *gt);
89 void intel_gt_fini_timelines(struct intel_gt *gt);