i915/gt/intel_timeline.c

58 intel_timeline_pin_map(struct intel_timeline *timeline)
60 	struct drm_i915_gem_object *obj = timeline->hwsp_ggtt->obj;
61 	u32 ofs = offset_in_page(timeline->hwsp_offset);
68 	timeline->hwsp_map = vaddr;
69 	timeline->hwsp_seqno = memset(vaddr + ofs, 0, TIMELINE_SEQNO_BYTES);
75 static int intel_timeline_init(struct intel_timeline *timeline,
80 	kref_init(&timeline->kref);
81 	atomic_set(&timeline->pin_count, 0);
83 	timeline->gt = gt;
86 		timeline->hwsp_offset = offset;
87 		timeline->hwsp_ggtt = i915_vma_get(hwsp);
89 		timeline->has_initial_breadcrumb = true;
93 		timeline->hwsp_ggtt = hwsp;
96 	timeline->hwsp_map = NULL;
97 	timeline->hwsp_seqno = (void *)(long)timeline->hwsp_offset;
99 	GEM_BUG_ON(timeline->hwsp_offset >= hwsp->size);
101 	timeline->fence_context = dma_fence_context_alloc(1);
103 	mutex_init(&timeline->mutex);
105 	INIT_ACTIVE_FENCE(&timeline->last_request);
106 	INIT_LIST_HEAD(&timeline->requests);
108 	i915_syncmap_init(&timeline->sync);
109 	i915_active_init(&timeline->active, __timeline_active,
125 	struct intel_timeline *timeline =
128 	if (timeline->hwsp_map)
129 		i915_gem_object_unpin_map(timeline->hwsp_ggtt->obj);
131 	i915_vma_put(timeline->hwsp_ggtt);
132 	i915_active_fini(&timeline->active);
140 	i915_syncmap_free(&timeline->sync);
142 	kfree(timeline);
150 	struct intel_timeline *timeline;
153 	timeline = kzalloc(sizeof(*timeline), GFP_KERNEL);
154 	if (!timeline)
157 	err = intel_timeline_init(timeline, gt, global_hwsp, offset);
159 		kfree(timeline);
163 	return timeline;
211 	GT_TRACE(tl->gt, "timeline:%llx using HWSP offset:%x\n",
239 	 * Pretend we are serialised by the timeline->mutex.
244 	 * timeline, it uses the power mutex as a global serialisation
245 	 * lock to prevent any other request entering its timeline.
252 	 * pin the timeline in the active_list while the locks are dropped.
292 	 * Since this timeline is idle, all bariers upon which we were waiting
347 	tl = rcu_dereference(from->timeline);
393 	struct intel_timeline *timeline =
394 		container_of(kref, typeof(*timeline), kref);
396 	GEM_BUG_ON(atomic_read(&timeline->pin_count));
397 	GEM_BUG_ON(!list_empty(&timeline->requests));
398 	GEM_BUG_ON(timeline->retire);
400 	call_rcu(&timeline->rcu, intel_timeline_fini);