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, offset: 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(kref: &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(kref: &timeline->kref, release: __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(root: &tl->sync, id: 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, context: fence->context, seqno: 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(root: &tl->sync, id: 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, context: fence->context, seqno: 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(list: &rq->link, head: &tl->requests);
99}
100
101I915_SELFTEST_DECLARE(int intel_timeline_pin_map(struct intel_timeline *tl));
102
103#endif
104

source code of linux/drivers/gpu/drm/i915/gt/intel_timeline.h