1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/scheduler/sched_fence.c b/drivers/gpu/drm/amd/scheduler/sched_fence.c
new file mode 100644
index 000000000000..d802638094f4
--- /dev/null
+++ b/drivers/gpu/drm/amd/scheduler/sched_fence.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ */
+#include <linux/kthread.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include <drm/drmP.h>
+#include "gpu_scheduler.h"
+
+struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *s_entity, void *owner)
+{
+	struct amd_sched_fence *fence = NULL;
+	unsigned seq;
+
+	fence = kzalloc(sizeof(struct amd_sched_fence), GFP_KERNEL);
+	if (fence == NULL)
+		return NULL;
+	fence->owner = owner;
+	fence->sched = s_entity->sched;
+	spin_lock_init(&fence->lock);
+
+	seq = atomic_inc_return(&s_entity->fence_seq);
+	fence_init(&fence->base, &amd_sched_fence_ops, &fence->lock,
+		   s_entity->fence_context, seq);
+
+	return fence;
+}
+
+void amd_sched_fence_signal(struct amd_sched_fence *fence)
+{
+	int ret = fence_signal(&fence->base);
+	if (!ret)
+		FENCE_TRACE(&fence->base, "signaled from irq context\n");
+	else
+		FENCE_TRACE(&fence->base, "was already signaled\n");
+}
+
+static const char *amd_sched_fence_get_driver_name(struct fence *fence)
+{
+	return "amd_sched";
+}
+
+static const char *amd_sched_fence_get_timeline_name(struct fence *f)
+{
+	struct amd_sched_fence *fence = to_amd_sched_fence(f);
+	return (const char *)fence->sched->name;
+}
+
+static bool amd_sched_fence_enable_signaling(struct fence *f)
+{
+	return true;
+}
+
+const struct fence_ops amd_sched_fence_ops = {
+	.get_driver_name = amd_sched_fence_get_driver_name,
+	.get_timeline_name = amd_sched_fence_get_timeline_name,
+	.enable_signaling = amd_sched_fence_enable_signaling,
+	.signaled = NULL,
+	.wait = fence_default_wait,
+	.release = NULL,
+};