1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/timer.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/timer.h
new file mode 100644
index 000000000000..4ad55082ef7a
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/timer.h
@@ -0,0 +1,61 @@
+#ifndef __NVKM_TIMER_H__
+#define __NVKM_TIMER_H__
+#include <core/subdev.h>
+
+struct nvkm_alarm {
+	struct list_head head;
+	u64 timestamp;
+	void (*func)(struct nvkm_alarm *);
+};
+
+static inline void
+nvkm_alarm_init(struct nvkm_alarm *alarm,
+		   void (*func)(struct nvkm_alarm *))
+{
+	INIT_LIST_HEAD(&alarm->head);
+	alarm->func = func;
+}
+
+bool nvkm_timer_wait_eq(void *, u64 nsec, u32 addr, u32 mask, u32 data);
+bool nvkm_timer_wait_ne(void *, u64 nsec, u32 addr, u32 mask, u32 data);
+bool nvkm_timer_wait_cb(void *, u64 nsec, bool (*func)(void *), void *data);
+void nvkm_timer_alarm(void *, u32 nsec, struct nvkm_alarm *);
+void nvkm_timer_alarm_cancel(void *, struct nvkm_alarm *);
+
+#define NV_WAIT_DEFAULT 2000000000ULL
+#define nv_wait(o,a,m,v)                                                       \
+	nvkm_timer_wait_eq((o), NV_WAIT_DEFAULT, (a), (m), (v))
+#define nv_wait_ne(o,a,m,v)                                                    \
+	nvkm_timer_wait_ne((o), NV_WAIT_DEFAULT, (a), (m), (v))
+#define nv_wait_cb(o,c,d)                                                      \
+	nvkm_timer_wait_cb((o), NV_WAIT_DEFAULT, (c), (d))
+
+struct nvkm_timer {
+	struct nvkm_subdev base;
+	u64  (*read)(struct nvkm_timer *);
+	void (*alarm)(struct nvkm_timer *, u64 time, struct nvkm_alarm *);
+	void (*alarm_cancel)(struct nvkm_timer *, struct nvkm_alarm *);
+};
+
+static inline struct nvkm_timer *
+nvkm_timer(void *obj)
+{
+	return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_TIMER);
+}
+
+#define nvkm_timer_create(p,e,o,d)                                          \
+	nvkm_subdev_create_((p), (e), (o), 0, "PTIMER", "timer",            \
+			       sizeof(**d), (void **)d)
+#define nvkm_timer_destroy(p)                                               \
+	nvkm_subdev_destroy(&(p)->base)
+#define nvkm_timer_init(p)                                                  \
+	nvkm_subdev_init(&(p)->base)
+#define nvkm_timer_fini(p,s)                                                \
+	nvkm_subdev_fini(&(p)->base, (s))
+
+int nvkm_timer_create_(struct nvkm_object *, struct nvkm_engine *,
+			  struct nvkm_oclass *, int size, void **);
+
+extern struct nvkm_oclass nv04_timer_oclass;
+extern struct nvkm_oclass gk20a_timer_oclass;
+#endif