1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24 #include <subdev/timer.h>
25
26 bool
nvkm_timer_wait_eq(void * obj,u64 nsec,u32 addr,u32 mask,u32 data)27 nvkm_timer_wait_eq(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
28 {
29 struct nvkm_timer *ptimer = nvkm_timer(obj);
30 u64 time0;
31
32 time0 = ptimer->read(ptimer);
33 do {
34 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
35 if ((nv_rd32(obj, addr) & mask) == data)
36 return true;
37 } else {
38 if ((nv_ro32(obj, addr) & mask) == data)
39 return true;
40 }
41 } while (ptimer->read(ptimer) - time0 < nsec);
42
43 return false;
44 }
45
46 bool
nvkm_timer_wait_ne(void * obj,u64 nsec,u32 addr,u32 mask,u32 data)47 nvkm_timer_wait_ne(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
48 {
49 struct nvkm_timer *ptimer = nvkm_timer(obj);
50 u64 time0;
51
52 time0 = ptimer->read(ptimer);
53 do {
54 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
55 if ((nv_rd32(obj, addr) & mask) != data)
56 return true;
57 } else {
58 if ((nv_ro32(obj, addr) & mask) != data)
59 return true;
60 }
61 } while (ptimer->read(ptimer) - time0 < nsec);
62
63 return false;
64 }
65
66 bool
nvkm_timer_wait_cb(void * obj,u64 nsec,bool (* func)(void *),void * data)67 nvkm_timer_wait_cb(void *obj, u64 nsec, bool (*func)(void *), void *data)
68 {
69 struct nvkm_timer *ptimer = nvkm_timer(obj);
70 u64 time0;
71
72 time0 = ptimer->read(ptimer);
73 do {
74 if (func(data) == true)
75 return true;
76 } while (ptimer->read(ptimer) - time0 < nsec);
77
78 return false;
79 }
80
81 void
nvkm_timer_alarm(void * obj,u32 nsec,struct nvkm_alarm * alarm)82 nvkm_timer_alarm(void *obj, u32 nsec, struct nvkm_alarm *alarm)
83 {
84 struct nvkm_timer *ptimer = nvkm_timer(obj);
85 ptimer->alarm(ptimer, nsec, alarm);
86 }
87
88 void
nvkm_timer_alarm_cancel(void * obj,struct nvkm_alarm * alarm)89 nvkm_timer_alarm_cancel(void *obj, struct nvkm_alarm *alarm)
90 {
91 struct nvkm_timer *ptimer = nvkm_timer(obj);
92 ptimer->alarm_cancel(ptimer, alarm);
93 }
94