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

/* SPDX-License-Identifier: MIT */
#ifndef __NVKM_TIMER_H__
#define __NVKM_TIMER_H__
#include <core/subdev.h>

struct nvkm_alarm { … };

static inline void
nvkm_alarm_init(struct nvkm_alarm *alarm, void (*func)(struct nvkm_alarm *))
{ … }

struct nvkm_timer { … };

u64 nvkm_timer_read(struct nvkm_timer *);
void nvkm_timer_alarm(struct nvkm_timer *, u32 nsec, struct nvkm_alarm *);

struct nvkm_timer_wait { … };

void nvkm_timer_wait_init(struct nvkm_device *, u64 nsec,
			  struct nvkm_timer_wait *);
s64 nvkm_timer_wait_test(struct nvkm_timer_wait *);

/* 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 …
#define nvkm_nsec(d,n,cond...) …
#define nvkm_usec(d, u, cond...) …
#define nvkm_msec(d, m, cond...) …

#define nvkm_wait_nsec(d,n,addr,mask,data) …
#define nvkm_wait_usec(d,u,addr,mask,data) …
#define nvkm_wait_msec(d,m,addr,mask,data) …

int nv04_timer_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_timer **);
int nv40_timer_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_timer **);
int nv41_timer_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_timer **);
int gk20a_timer_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_timer **);
#endif