1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/userc361.c b/drivers/gpu/drm/nouveau/nvif/userc361.c
new file mode 100644
index 000000000..1116f871b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvif/userc361.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2018 Red Hat 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 <nvif/user.h>
+
+static u64
+nvif_userc361_time(struct nvif_user *user)
+{
+	u32 hi, lo;
+
+	do {
+		hi = nvif_rd32(&user->object, 0x084);
+		lo = nvif_rd32(&user->object, 0x080);
+	} while (hi != nvif_rd32(&user->object, 0x084));
+
+	return ((u64)hi << 32 | lo);
+}
+
+static void
+nvif_userc361_doorbell(struct nvif_user *user, u32 token)
+{
+	nvif_wr32(&user->object, 0x90, token);
+}
+
+const struct nvif_user_func
+nvif_userc361 = {
+	.doorbell = nvif_userc361_doorbell,
+	.time = nvif_userc361_time,
+};