1/*
 2 * Copyright © 2016 Intel Corporation
 3 *
 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:
10 *
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
13 * Software.
14 *
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
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 */
24
25#ifndef I915_TIMELINE_H
26#define I915_TIMELINE_H
27
28#include <linux/lockdep.h>
29
30#include "i915_active.h"
31#include "i915_syncmap.h"
32#include "gt/intel_timeline_types.h"
33
34int intel_timeline_init(struct intel_timeline *tl,
35			struct intel_gt *gt,
36			struct i915_vma *hwsp);
37void intel_timeline_fini(struct intel_timeline *tl);
38
39struct intel_timeline *
40intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp);
41
42static inline struct intel_timeline *
43intel_timeline_get(struct intel_timeline *timeline)
44{
45	kref_get(&timeline->kref);
46	return timeline;
47}
48
49void __intel_timeline_free(struct kref *kref);
50static inline void intel_timeline_put(struct intel_timeline *timeline)
51{
52	kref_put(&timeline->kref, __intel_timeline_free);
53}
54
55static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
56					    u64 context, u32 seqno)
57{
58	return i915_syncmap_set(&tl->sync, context, seqno);
59}
60
61static inline int intel_timeline_sync_set(struct intel_timeline *tl,
62					  const struct dma_fence *fence)
63{
64	return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
65}
66
67static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
68						  u64 context, u32 seqno)
69{
70	return i915_syncmap_is_later(&tl->sync, context, seqno);
71}
72
73static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
74						const struct dma_fence *fence)
75{
76	return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
77}
78
79int intel_timeline_pin(struct intel_timeline *tl);
80void intel_timeline_enter(struct intel_timeline *tl);
81int intel_timeline_get_seqno(struct intel_timeline *tl,
82			     struct i915_request *rq,
83			     u32 *seqno);
84void intel_timeline_exit(struct intel_timeline *tl);
85void intel_timeline_unpin(struct intel_timeline *tl);
86
87int intel_timeline_read_hwsp(struct i915_request *from,
88			     struct i915_request *until,
89			     u32 *hwsp_offset);
90
91void intel_timelines_init(struct drm_i915_private *i915);
92void intel_timelines_fini(struct drm_i915_private *i915);
93
94#endif