intel_timeline.h

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