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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
9e79a853 BS |
2 | #ifndef __NVKM_TIMER_H__ |
3 | #define __NVKM_TIMER_H__ | |
5a5c7432 | 4 | #include <core/subdev.h> |
5a5c7432 | 5 | |
9e79a853 | 6 | struct nvkm_alarm { |
5a5c7432 | 7 | struct list_head head; |
b4e382ca | 8 | struct list_head exec; |
5a5c7432 | 9 | u64 timestamp; |
9e79a853 | 10 | void (*func)(struct nvkm_alarm *); |
5a5c7432 BS |
11 | }; |
12 | ||
0cbf83bb | 13 | static inline void |
31649ecf | 14 | nvkm_alarm_init(struct nvkm_alarm *alarm, void (*func)(struct nvkm_alarm *)) |
0cbf83bb MP |
15 | { |
16 | INIT_LIST_HEAD(&alarm->head); | |
17 | alarm->func = func; | |
18 | } | |
19 | ||
31649ecf BS |
20 | struct nvkm_timer { |
21 | const struct nvkm_timer_func *func; | |
22 | struct nvkm_subdev subdev; | |
23 | ||
24 | struct list_head alarms; | |
25 | spinlock_t lock; | |
26 | }; | |
27 | ||
28 | u64 nvkm_timer_read(struct nvkm_timer *); | |
29 | void nvkm_timer_alarm(struct nvkm_timer *, u32 nsec, struct nvkm_alarm *); | |
5a5c7432 | 30 | |
56f67dc1 BS |
31 | /* Delay based on GPU time (ie. PTIMER). |
32 | * | |
33 | * Will return -ETIMEDOUT unless the loop was terminated with 'break', | |
34 | * where it will return the number of nanoseconds taken instead. | |
35 | * | |
36 | * NVKM_DELAY can be passed for 'cond' to disable the timeout warning, | |
37 | * which is useful for unconditional delay loops. | |
38 | */ | |
39 | #define NVKM_DELAY _warn = false; | |
40 | #define nvkm_nsec(d,n,cond...) ({ \ | |
41 | struct nvkm_device *_device = (d); \ | |
42 | struct nvkm_timer *_tmr = _device->timer; \ | |
31649ecf | 43 | u64 _nsecs = (n), _time0 = nvkm_timer_read(_tmr); \ |
56f67dc1 | 44 | s64 _taken = 0; \ |
31649ecf | 45 | bool _warn = true; \ |
56f67dc1 BS |
46 | \ |
47 | do { \ | |
48 | cond \ | |
31649ecf | 49 | } while (_taken = nvkm_timer_read(_tmr) - _time0, _taken < _nsecs); \ |
56f67dc1 BS |
50 | \ |
51 | if (_taken >= _nsecs) { \ | |
eb875d87 BS |
52 | if (_warn) \ |
53 | dev_WARN(_device->dev, "timeout\n"); \ | |
56f67dc1 BS |
54 | _taken = -ETIMEDOUT; \ |
55 | } \ | |
56 | _taken; \ | |
57 | }) | |
58 | #define nvkm_usec(d,u,cond...) nvkm_nsec((d), (u) * 1000, ##cond) | |
59 | #define nvkm_msec(d,m,cond...) nvkm_usec((d), (m) * 1000, ##cond) | |
60 | ||
542f60dc AC |
61 | #define nvkm_wait_nsec(d,n,addr,mask,data) \ |
62 | nvkm_nsec(d, n, \ | |
63 | if ((nvkm_rd32(d, (addr)) & (mask)) == (data)) \ | |
64 | break; \ | |
65 | ) | |
66 | #define nvkm_wait_usec(d,u,addr,mask,data) \ | |
67 | nvkm_wait_nsec((d), (u) * 1000, (addr), (mask), (data)) | |
68 | #define nvkm_wait_msec(d,m,addr,mask,data) \ | |
69 | nvkm_wait_usec((d), (m) * 1000, (addr), (mask), (data)) | |
70 | ||
31649ecf BS |
71 | int nv04_timer_new(struct nvkm_device *, int, struct nvkm_timer **); |
72 | int nv40_timer_new(struct nvkm_device *, int, struct nvkm_timer **); | |
73 | int nv41_timer_new(struct nvkm_device *, int, struct nvkm_timer **); | |
74 | int gk20a_timer_new(struct nvkm_device *, int, struct nvkm_timer **); | |
5a5c7432 | 75 | #endif |