kernel/drivers/gpu/drm/nouveau/include/nvkm/subdev/timer.h

   1 #ifndef __NVKM_TIMER_H__
   2 #define __NVKM_TIMER_H__
   3 #include <core/subdev.h>
   4
   5 struct nvkm_alarm {
   6         struct list_head head;
   7         u64 timestamp;
   8         void (*func)(struct nvkm_alarm *);
   9 };
  10
  11 static inline void
  12 nvkm_alarm_init(struct nvkm_alarm *alarm,
  13                    void (*func)(struct nvkm_alarm *))
  14 {
  15         INIT_LIST_HEAD(&alarm->head);
  16         alarm->func = func;
  17 }
  18
  19 bool nvkm_timer_wait_eq(void *, u64 nsec, u32 addr, u32 mask, u32 data);
  20 bool nvkm_timer_wait_ne(void *, u64 nsec, u32 addr, u32 mask, u32 data);
  21 bool nvkm_timer_wait_cb(void *, u64 nsec, bool (*func)(void *), void *data);
  22 void nvkm_timer_alarm(void *, u32 nsec, struct nvkm_alarm *);
  23 void nvkm_timer_alarm_cancel(void *, struct nvkm_alarm *);
  24
  25 #define NV_WAIT_DEFAULT 2000000000ULL
  26 #define nv_wait(o,a,m,v)                                                       \
  27         nvkm_timer_wait_eq((o), NV_WAIT_DEFAULT, (a), (m), (v))
  28 #define nv_wait_ne(o,a,m,v)                                                    \
  29         nvkm_timer_wait_ne((o), NV_WAIT_DEFAULT, (a), (m), (v))
  30 #define nv_wait_cb(o,c,d)                                                      \
  31         nvkm_timer_wait_cb((o), NV_WAIT_DEFAULT, (c), (d))
  32
  33 struct nvkm_timer {
  34         struct nvkm_subdev base;
  35         u64  (*read)(struct nvkm_timer *);
  36         void (*alarm)(struct nvkm_timer *, u64 time, struct nvkm_alarm *);
  37         void (*alarm_cancel)(struct nvkm_timer *, struct nvkm_alarm *);
  38 };
  39
  40 static inline struct nvkm_timer *
  41 nvkm_timer(void *obj)
  42 {
  43         return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_TIMER);
  44 }
  45
  46 #define nvkm_timer_create(p,e,o,d)                                          \
  47         nvkm_subdev_create_((p), (e), (o), 0, "PTIMER", "timer",            \
  48                                sizeof(**d), (void **)d)
  49 #define nvkm_timer_destroy(p)                                               \
  50         nvkm_subdev_destroy(&(p)->base)
  51 #define nvkm_timer_init(p)                                                  \
  52         nvkm_subdev_init(&(p)->base)
  53 #define nvkm_timer_fini(p,s)                                                \
  54         nvkm_subdev_fini(&(p)->base, (s))
  55
  56 int nvkm_timer_create_(struct nvkm_object *, struct nvkm_engine *,
  57                           struct nvkm_oclass *, int size, void **);
  58
  59 extern struct nvkm_oclass nv04_timer_oclass;
  60 extern struct nvkm_oclass gk20a_timer_oclass;
  61 #endif