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 	struct nvkm_device *device = ptimer->subdev.device;
31 	u64 time0;
32 
33 	time0 = ptimer->read(ptimer);
34 	do {
35 		if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
36 			if ((nvkm_rd32(device, addr) & mask) == data)
37 				return true;
38 		} else {
39 			if ((nv_ro32(obj, addr) & mask) == data)
40 				return true;
41 		}
42 	} while (ptimer->read(ptimer) - time0 < nsec);
43 
44 	return false;
45 }
46 
47 bool
48 nvkm_timer_wait_ne(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
49 {
50 	struct nvkm_timer *ptimer = nvkm_timer(obj);
51 	struct nvkm_device *device = ptimer->subdev.device;
52 	u64 time0;
53 
54 	time0 = ptimer->read(ptimer);
55 	do {
56 		if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
57 			if ((nvkm_rd32(device, addr) & mask) != data)
58 				return true;
59 		} else {
60 			if ((nv_ro32(obj, addr) & mask) != data)
61 				return true;
62 		}
63 	} while (ptimer->read(ptimer) - time0 < nsec);
64 
65 	return false;
66 }
67 
68 bool
69 nvkm_timer_wait_cb(void *obj, u64 nsec, bool (*func)(void *), void *data)
70 {
71 	struct nvkm_timer *ptimer = nvkm_timer(obj);
72 	u64 time0;
73 
74 	time0 = ptimer->read(ptimer);
75 	do {
76 		if (func(data) == true)
77 			return true;
78 	} while (ptimer->read(ptimer) - time0 < nsec);
79 
80 	return false;
81 }
82 
83 void
84 nvkm_timer_alarm(void *obj, u32 nsec, struct nvkm_alarm *alarm)
85 {
86 	struct nvkm_timer *tmr = nvkm_timer(obj);
87 	tmr->alarm(tmr, nsec, alarm);
88 }
89 
90 void
91 nvkm_timer_alarm_cancel(void *obj, struct nvkm_alarm *alarm)
92 {
93 	struct nvkm_timer *tmr = nvkm_timer(obj);
94 	tmr->alarm_cancel(tmr, alarm);
95 }
96