1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/timer.h b/drivers/gpu/drm/nouveau/core/include/subdev/timer.h
new file mode 100644
index 000000000000..49bff901544c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/timer.h
@@ -0,0 +1,53 @@
+#ifndef __NOUVEAU_TIMER_H__
+#define __NOUVEAU_TIMER_H__
+
+#include <core/subdev.h>
+#include <core/device.h>
+
+struct nouveau_alarm {
+	struct list_head head;
+	u64 timestamp;
+	void (*func)(struct nouveau_alarm *);
+};
+
+bool nouveau_timer_wait_eq(void *, u64 nsec, u32 addr, u32 mask, u32 data);
+bool nouveau_timer_wait_ne(void *, u64 nsec, u32 addr, u32 mask, u32 data);
+bool nouveau_timer_wait_cb(void *, u64 nsec, bool (*func)(void *), void *data);
+void nouveau_timer_alarm(void *, u32 nsec, struct nouveau_alarm *);
+
+#define NV_WAIT_DEFAULT 2000000000ULL
+#define nv_wait(o,a,m,v)                                                       \
+	nouveau_timer_wait_eq((o), NV_WAIT_DEFAULT, (a), (m), (v))
+#define nv_wait_ne(o,a,m,v)                                                    \
+	nouveau_timer_wait_ne((o), NV_WAIT_DEFAULT, (a), (m), (v))
+#define nv_wait_cb(o,c,d)                                                      \
+	nouveau_timer_wait_cb((o), NV_WAIT_DEFAULT, (c), (d))
+
+struct nouveau_timer {
+	struct nouveau_subdev base;
+	u64  (*read)(struct nouveau_timer *);
+	void (*alarm)(struct nouveau_timer *, u32 time, struct nouveau_alarm *);
+};
+
+static inline struct nouveau_timer *
+nouveau_timer(void *obj)
+{
+	return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_TIMER];
+}
+
+#define nouveau_timer_create(p,e,o,d)                                          \
+	nouveau_subdev_create_((p), (e), (o), 0, "PTIMER", "timer",            \
+			       sizeof(**d), (void **)d)
+#define nouveau_timer_destroy(p)                                               \
+	nouveau_subdev_destroy(&(p)->base)
+#define nouveau_timer_init(p)                                                  \
+	nouveau_subdev_init(&(p)->base)
+#define nouveau_timer_fini(p,s)                                                \
+	nouveau_subdev_fini(&(p)->base, (s))
+
+int nouveau_timer_create_(struct nouveau_object *, struct nouveau_engine *,
+			  struct nouveau_oclass *, int size, void **);
+
+extern struct nouveau_oclass nv04_timer_oclass;
+
+#endif