36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
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#ifndef __NVIF_TIMER_H__
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#define __NVIF_TIMER_H__
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#include <nvif/os.h>
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struct nvif_timer_wait {
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struct nvif_device *device;
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u64 limit;
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u64 time0;
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u64 time1;
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int reads;
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};
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void nvif_timer_wait_init(struct nvif_device *, u64 nsec,
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struct nvif_timer_wait *);
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s64 nvif_timer_wait_test(struct nvif_timer_wait *);
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/* Delay based on GPU time (ie. PTIMER).
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*
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* Will return -ETIMEDOUT unless the loop was terminated with 'break',
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* where it will return the number of nanoseconds taken instead.
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*/
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#define nvif_nsec(d,n,cond...) ({ \
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struct nvif_timer_wait _wait; \
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s64 _taken = 0; \
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\
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nvif_timer_wait_init((d), (n), &_wait); \
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do { \
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cond \
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} while ((_taken = nvif_timer_wait_test(&_wait)) >= 0); \
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\
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_taken; \
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})
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#define nvif_usec(d,u,cond...) nvif_nsec((d), (u) * 1000, ##cond)
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#define nvif_msec(d,m,cond...) nvif_usec((d), (m) * 1000, ##cond)
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#endif
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