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
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
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
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
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
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