84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
|
/* SPDX-License-Identifier: MIT */
|
||
|
|
#ifndef __NVKM_TIMER_H__
|
||
|
|
#define __NVKM_TIMER_H__
|
||
|
|
#include <core/subdev.h>
|
||
|
|
|
||
|
|
struct nvkm_alarm {
|
||
|
|
struct list_head head;
|
||
|
|
struct list_head exec;
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct nvkm_timer {
|
||
|
|
const struct nvkm_timer_func *func;
|
||
|
|
struct nvkm_subdev subdev;
|
||
|
|
|
||
|
|
struct list_head alarms;
|
||
|
|
spinlock_t lock;
|
||
|
|
};
|
||
|
|
|
||
|
|
u64 nvkm_timer_read(struct nvkm_timer *);
|
||
|
|
void nvkm_timer_alarm(struct nvkm_timer *, u32 nsec, struct nvkm_alarm *);
|
||
|
|
|
||
|
|
struct nvkm_timer_wait {
|
||
|
|
struct nvkm_timer *tmr;
|
||
|
|
u64 limit;
|
||
|
|
u64 time0;
|
||
|
|
u64 time1;
|
||
|
|
int reads;
|
||
|
|
};
|
||
|
|
|
||
|
|
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 _warn = false;
|
||
|
|
#define nvkm_nsec(d,n,cond...) ({ \
|
||
|
|
struct nvkm_timer_wait _wait; \
|
||
|
|
bool _warn = true; \
|
||
|
|
s64 _taken = 0; \
|
||
|
|
\
|
||
|
|
nvkm_timer_wait_init((d), (n), &_wait); \
|
||
|
|
do { \
|
||
|
|
cond \
|
||
|
|
} while ((_taken = nvkm_timer_wait_test(&_wait)) >= 0); \
|
||
|
|
\
|
||
|
|
if (_warn && _taken < 0) \
|
||
|
|
dev_WARN(_wait.tmr->subdev.device->dev, "timeout\n"); \
|
||
|
|
_taken; \
|
||
|
|
})
|
||
|
|
#define nvkm_usec(d, u, cond...) nvkm_nsec((d), (u) * 1000ULL, ##cond)
|
||
|
|
#define nvkm_msec(d, m, cond...) nvkm_usec((d), (m) * 1000ULL, ##cond)
|
||
|
|
|
||
|
|
#define nvkm_wait_nsec(d,n,addr,mask,data) \
|
||
|
|
nvkm_nsec(d, n, \
|
||
|
|
if ((nvkm_rd32(d, (addr)) & (mask)) == (data)) \
|
||
|
|
break; \
|
||
|
|
)
|
||
|
|
#define nvkm_wait_usec(d,u,addr,mask,data) \
|
||
|
|
nvkm_wait_nsec((d), (u) * 1000, (addr), (mask), (data))
|
||
|
|
#define nvkm_wait_msec(d,m,addr,mask,data) \
|
||
|
|
nvkm_wait_usec((d), (m) * 1000, (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
|