1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.h b/drivers/gpu/drm/i915/gt/intel_timeline.h
new file mode 100644
index 0000000000..57308c4d66
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_timeline.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2016 Intel Corporation
+ */
+
+#ifndef I915_TIMELINE_H
+#define I915_TIMELINE_H
+
+#include <linux/lockdep.h>
+
+#include "i915_active.h"
+#include "i915_syncmap.h"
+#include "intel_timeline_types.h"
+
+struct drm_printer;
+
+struct intel_timeline *
+__intel_timeline_create(struct intel_gt *gt,
+			struct i915_vma *global_hwsp,
+			unsigned int offset);
+
+static inline struct intel_timeline *
+intel_timeline_create(struct intel_gt *gt)
+{
+	return __intel_timeline_create(gt, NULL, 0);
+}
+
+struct intel_timeline *
+intel_timeline_create_from_engine(struct intel_engine_cs *engine,
+				  unsigned int offset);
+
+static inline struct intel_timeline *
+intel_timeline_get(struct intel_timeline *timeline)
+{
+	kref_get(&timeline->kref);
+	return timeline;
+}
+
+void __intel_timeline_free(struct kref *kref);
+static inline void intel_timeline_put(struct intel_timeline *timeline)
+{
+	kref_put(&timeline->kref, __intel_timeline_free);
+}
+
+static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
+					    u64 context, u32 seqno)
+{
+	return i915_syncmap_set(&tl->sync, context, seqno);
+}
+
+static inline int intel_timeline_sync_set(struct intel_timeline *tl,
+					  const struct dma_fence *fence)
+{
+	return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
+}
+
+static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
+						  u64 context, u32 seqno)
+{
+	return i915_syncmap_is_later(&tl->sync, context, seqno);
+}
+
+static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
+						const struct dma_fence *fence)
+{
+	return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
+}
+
+void __intel_timeline_pin(struct intel_timeline *tl);
+int intel_timeline_pin(struct intel_timeline *tl, struct i915_gem_ww_ctx *ww);
+void intel_timeline_enter(struct intel_timeline *tl);
+int intel_timeline_get_seqno(struct intel_timeline *tl,
+			     struct i915_request *rq,
+			     u32 *seqno);
+void intel_timeline_exit(struct intel_timeline *tl);
+void intel_timeline_unpin(struct intel_timeline *tl);
+
+void intel_timeline_reset_seqno(const struct intel_timeline *tl);
+
+int intel_timeline_read_hwsp(struct i915_request *from,
+			     struct i915_request *until,
+			     u32 *hwsp_offset);
+
+void intel_gt_init_timelines(struct intel_gt *gt);
+void intel_gt_fini_timelines(struct intel_gt *gt);
+
+void intel_gt_show_timelines(struct intel_gt *gt,
+			     struct drm_printer *m,
+			     void (*show_request)(struct drm_printer *m,
+						  const struct i915_request *rq,
+						  const char *prefix,
+						  int indent));
+
+static inline bool
+intel_timeline_is_last(const struct intel_timeline *tl,
+		       const struct i915_request *rq)
+{
+	return list_is_last_rcu(&rq->link, &tl->requests);
+}
+
+I915_SELFTEST_DECLARE(int intel_timeline_pin_map(struct intel_timeline *tl));
+
+#endif