1*ed3d1489SBen Skeggs #ifndef __NVIF_TIMER_H__ 2*ed3d1489SBen Skeggs #define __NVIF_TIMER_H__ 3*ed3d1489SBen Skeggs #include <nvif/os.h> 4*ed3d1489SBen Skeggs 5*ed3d1489SBen Skeggs struct nvif_timer_wait { 6*ed3d1489SBen Skeggs struct nvif_device *device; 7*ed3d1489SBen Skeggs u64 limit; 8*ed3d1489SBen Skeggs u64 time0; 9*ed3d1489SBen Skeggs u64 time1; 10*ed3d1489SBen Skeggs int reads; 11*ed3d1489SBen Skeggs }; 12*ed3d1489SBen Skeggs 13*ed3d1489SBen Skeggs void nvif_timer_wait_init(struct nvif_device *, u64 nsec, 14*ed3d1489SBen Skeggs struct nvif_timer_wait *); 15*ed3d1489SBen Skeggs s64 nvif_timer_wait_test(struct nvif_timer_wait *); 16*ed3d1489SBen Skeggs 17*ed3d1489SBen Skeggs /* Delay based on GPU time (ie. PTIMER). 18*ed3d1489SBen Skeggs * 19*ed3d1489SBen Skeggs * Will return -ETIMEDOUT unless the loop was terminated with 'break', 20*ed3d1489SBen Skeggs * where it will return the number of nanoseconds taken instead. 21*ed3d1489SBen Skeggs */ 22*ed3d1489SBen Skeggs #define nvif_nsec(d,n,cond...) ({ \ 23*ed3d1489SBen Skeggs struct nvif_timer_wait _wait; \ 24*ed3d1489SBen Skeggs s64 _taken = 0; \ 25*ed3d1489SBen Skeggs \ 26*ed3d1489SBen Skeggs nvif_timer_wait_init((d), (n), &_wait); \ 27*ed3d1489SBen Skeggs do { \ 28*ed3d1489SBen Skeggs cond \ 29*ed3d1489SBen Skeggs } while ((_taken = nvif_timer_wait_test(&_wait)) >= 0); \ 30*ed3d1489SBen Skeggs \ 31*ed3d1489SBen Skeggs _taken; \ 32*ed3d1489SBen Skeggs }) 33*ed3d1489SBen Skeggs #define nvif_usec(d,u,cond...) nvif_nsec((d), (u) * 1000, ##cond) 34*ed3d1489SBen Skeggs #define nvif_msec(d,m,cond...) nvif_usec((d), (m) * 1000, ##cond) 35*ed3d1489SBen Skeggs #endif 36