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