1/* SPDX-License-Identifier: MIT */
2/*
3 * Copyright �� 2016 Intel Corporation
4 */
5
6#ifndef I915_TIMELINE_H
7#define I915_TIMELINE_H
8
9#include <linux/lockdep.h>
10
11#include "i915_active.h"
12#include "i915_syncmap.h"
13#include "intel_timeline_types.h"
14
15struct drm_printer;
16
17struct intel_timeline *
18__intel_timeline_create(struct intel_gt *gt,
19			struct i915_vma *global_hwsp,
20			unsigned int offset);
21
22static inline struct intel_timeline *
23intel_timeline_create(struct intel_gt *gt)
24{
25	return __intel_timeline_create(gt, NULL, 0);
26}
27
28struct intel_timeline *
29intel_timeline_create_from_engine(struct intel_engine_cs *engine,
30				  unsigned int offset);
31
32static inline struct intel_timeline *
33intel_timeline_get(struct intel_timeline *timeline)
34{
35	kref_get(&timeline->kref);
36	return timeline;
37}
38
39void __intel_timeline_free(struct kref *kref);
40static inline void intel_timeline_put(struct intel_timeline *timeline)
41{
42	kref_put(&timeline->kref, __intel_timeline_free);
43}
44
45static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
46					    u64 context, u32 seqno)
47{
48	return i915_syncmap_set(&tl->sync, context, seqno);
49}
50
51static inline int intel_timeline_sync_set(struct intel_timeline *tl,
52					  const struct dma_fence *fence)
53{
54	return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
55}
56
57static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
58						  u64 context, u32 seqno)
59{
60	return i915_syncmap_is_later(&tl->sync, context, seqno);
61}
62
63static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
64						const struct dma_fence *fence)
65{
66	return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
67}
68
69void __intel_timeline_pin(struct intel_timeline *tl);
70int intel_timeline_pin(struct intel_timeline *tl, struct i915_gem_ww_ctx *ww);
71void intel_timeline_enter(struct intel_timeline *tl);
72int intel_timeline_get_seqno(struct intel_timeline *tl,
73			     struct i915_request *rq,
74			     u32 *seqno);
75void intel_timeline_exit(struct intel_timeline *tl);
76void intel_timeline_unpin(struct intel_timeline *tl);
77
78void intel_timeline_reset_seqno(const struct intel_timeline *tl);
79
80int intel_timeline_read_hwsp(struct i915_request *from,
81			     struct i915_request *until,
82			     u32 *hwsp_offset);
83
84void intel_gt_init_timelines(struct intel_gt *gt);
85void intel_gt_fini_timelines(struct intel_gt *gt);
86
87void intel_gt_show_timelines(struct intel_gt *gt,
88			     struct drm_printer *m,
89			     void (*show_request)(struct drm_printer *m,
90						  const struct i915_request *rq,
91						  const char *prefix,
92						  int indent));
93
94static inline bool
95intel_timeline_is_last(const struct intel_timeline *tl,
96		       const struct i915_request *rq)
97{
98	return list_is_last_rcu(&rq->link, &tl->requests);
99}
100
101I915_SELFTEST_DECLARE(int intel_timeline_pin_map(struct intel_timeline *tl));
102
103#endif
104