1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/timer/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/timer/base.c
new file mode 100644
index 000000000000..d894061ced52
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/timer/base.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2012 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.
+ *
+ * Authors: Ben Skeggs
+ */
+#include <subdev/timer.h>
+
+bool
+nvkm_timer_wait_eq(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
+{
+	struct nvkm_timer *ptimer = nvkm_timer(obj);
+	u64 time0;
+
+	time0 = ptimer->read(ptimer);
+	do {
+		if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
+			if ((nv_rd32(obj, addr) & mask) == data)
+				return true;
+		} else {
+			if ((nv_ro32(obj, addr) & mask) == data)
+				return true;
+		}
+	} while (ptimer->read(ptimer) - time0 < nsec);
+
+	return false;
+}
+
+bool
+nvkm_timer_wait_ne(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
+{
+	struct nvkm_timer *ptimer = nvkm_timer(obj);
+	u64 time0;
+
+	time0 = ptimer->read(ptimer);
+	do {
+		if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
+			if ((nv_rd32(obj, addr) & mask) != data)
+				return true;
+		} else {
+			if ((nv_ro32(obj, addr) & mask) != data)
+				return true;
+		}
+	} while (ptimer->read(ptimer) - time0 < nsec);
+
+	return false;
+}
+
+bool
+nvkm_timer_wait_cb(void *obj, u64 nsec, bool (*func)(void *), void *data)
+{
+	struct nvkm_timer *ptimer = nvkm_timer(obj);
+	u64 time0;
+
+	time0 = ptimer->read(ptimer);
+	do {
+		if (func(data) == true)
+			return true;
+	} while (ptimer->read(ptimer) - time0 < nsec);
+
+	return false;
+}
+
+void
+nvkm_timer_alarm(void *obj, u32 nsec, struct nvkm_alarm *alarm)
+{
+	struct nvkm_timer *ptimer = nvkm_timer(obj);
+	ptimer->alarm(ptimer, nsec, alarm);
+}
+
+void
+nvkm_timer_alarm_cancel(void *obj, struct nvkm_alarm *alarm)
+{
+	struct nvkm_timer *ptimer = nvkm_timer(obj);
+	ptimer->alarm_cancel(ptimer, alarm);
+}