/* 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