804f570502
nvkm_timer_wait_init() takes a u64 as a duration parameter, but the expression "(m) * 1000" will be promoted only to a 32-bit integer, if 'm' is also an integer. Changing the 1000 to 1000ULL ensures that the expression will be 64 bits. This change currently has no effect as there are no callers of nvkm_msec() that exceed 2000ms. Signed-off-by: Timur Tabi <ttabi@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
84 lines
3.1 KiB
C
84 lines
3.1 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 *, int, struct nvkm_timer **);
|
|
int nv40_timer_new(struct nvkm_device *, int, struct nvkm_timer **);
|
|
int nv41_timer_new(struct nvkm_device *, int, struct nvkm_timer **);
|
|
int gk20a_timer_new(struct nvkm_device *, int, struct nvkm_timer **);
|
|
#endif
|