1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gpu_scheduler.c b/drivers/gpu/drm/xe/xe_gpu_scheduler.c
new file mode 100644
index 000000000000..e4ad1d6ce1d5
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_gpu_scheduler.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include "xe_gpu_scheduler.h"
+
+static void xe_sched_process_msg_queue(struct xe_gpu_scheduler *sched)
+{
+	if (!READ_ONCE(sched->base.pause_submit))
+		queue_work(sched->base.submit_wq, &sched->work_process_msg);
+}
+
+static void xe_sched_process_msg_queue_if_ready(struct xe_gpu_scheduler *sched)
+{
+	struct xe_sched_msg *msg;
+
+	spin_lock(&sched->base.job_list_lock);
+	msg = list_first_entry_or_null(&sched->msgs, struct xe_sched_msg, link);
+	if (msg)
+		xe_sched_process_msg_queue(sched);
+	spin_unlock(&sched->base.job_list_lock);
+}
+
+static struct xe_sched_msg *
+xe_sched_get_msg(struct xe_gpu_scheduler *sched)
+{
+	struct xe_sched_msg *msg;
+
+	spin_lock(&sched->base.job_list_lock);
+	msg = list_first_entry_or_null(&sched->msgs,
+				       struct xe_sched_msg, link);
+	if (msg)
+		list_del(&msg->link);
+	spin_unlock(&sched->base.job_list_lock);
+
+	return msg;
+}
+
+static void xe_sched_process_msg_work(struct work_struct *w)
+{
+	struct xe_gpu_scheduler *sched =
+		container_of(w, struct xe_gpu_scheduler, work_process_msg);
+	struct xe_sched_msg *msg;
+
+	if (READ_ONCE(sched->base.pause_submit))
+		return;
+
+	msg = xe_sched_get_msg(sched);
+	if (msg) {
+		sched->ops->process_msg(msg);
+
+		xe_sched_process_msg_queue_if_ready(sched);
+	}
+}
+
+int xe_sched_init(struct xe_gpu_scheduler *sched,
+		  const struct drm_sched_backend_ops *ops,
+		  const struct xe_sched_backend_ops *xe_ops,
+		  struct workqueue_struct *submit_wq,
+		  uint32_t hw_submission, unsigned hang_limit,
+		  long timeout, struct workqueue_struct *timeout_wq,
+		  atomic_t *score, const char *name,
+		  struct device *dev)
+{
+	sched->ops = xe_ops;
+	INIT_LIST_HEAD(&sched->msgs);
+	INIT_WORK(&sched->work_process_msg, xe_sched_process_msg_work);
+
+	return drm_sched_init(&sched->base, ops, submit_wq, 1, hw_submission,
+			      hang_limit, timeout, timeout_wq, score, name,
+			      dev);
+}
+
+void xe_sched_fini(struct xe_gpu_scheduler *sched)
+{
+	xe_sched_submission_stop(sched);
+	drm_sched_fini(&sched->base);
+}
+
+void xe_sched_submission_start(struct xe_gpu_scheduler *sched)
+{
+	drm_sched_wqueue_start(&sched->base);
+	queue_work(sched->base.submit_wq, &sched->work_process_msg);
+}
+
+void xe_sched_submission_stop(struct xe_gpu_scheduler *sched)
+{
+	drm_sched_wqueue_stop(&sched->base);
+	cancel_work_sync(&sched->work_process_msg);
+}
+
+void xe_sched_add_msg(struct xe_gpu_scheduler *sched,
+		      struct xe_sched_msg *msg)
+{
+	spin_lock(&sched->base.job_list_lock);
+	list_add_tail(&msg->link, &sched->msgs);
+	spin_unlock(&sched->base.job_list_lock);
+
+	xe_sched_process_msg_queue(sched);
+}