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#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;
}
void nvkm_timer_alarm(void *, u32 nsec, struct nvkm_alarm *);
void nvkm_timer_alarm_cancel(void *, struct nvkm_alarm *);
/* Delay based on GPU time (ie. PTIMER).
*
* Will return -ETIMEDOUT unless the loop was terminated with 'break',
* where it will return the number of nanoseconds taken instead.
*
* NVKM_DELAY can be passed for 'cond' to disable the timeout warning,
* which is useful for unconditional delay loops.
*/
#define NVKM_DELAY _warn = false;
#define nvkm_nsec(d,n,cond...) ({ \
struct nvkm_device *_device = (d); \
struct nvkm_timer *_tmr = _device->timer; \
u64 _nsecs = (n), _time0 = _tmr->read(_tmr); \
s64 _taken = 0; \
bool _warn = true; \
\
do { \
cond \
} while (_taken = _tmr->read(_tmr) - _time0, _taken < _nsecs); \
\
if (_taken >= _nsecs) { \
if (_warn) { \
dev_warn(_device->dev, "timeout at %s:%d/%s()!\n", \
__FILE__, __LINE__, __func__); \
} \
_taken = -ETIMEDOUT; \
} \
_taken; \
})
#define nvkm_usec(d,u,cond...) nvkm_nsec((d), (u) * 1000, ##cond)
#define nvkm_msec(d,m,cond...) nvkm_usec((d), (m) * 1000, ##cond)
struct nvkm_timer {
struct nvkm_subdev subdev;
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)->subdev)
#define nvkm_timer_init(p) \
nvkm_subdev_init(&(p)->subdev)
#define nvkm_timer_fini(p,s) \
nvkm_subdev_fini(&(p)->subdev, (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
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