1/* $NetBSD: nouveau_subdev_timer_base.c,v 1.1.1.1 2014/08/06 12:36:32 riastradh Exp $ */
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_timer_base.c,v 1.1.1.1 2014/08/06 12:36:32 riastradh Exp $");
29
30#include "subdev/timer.h"
31
32bool
33nouveau_timer_wait_eq(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
34{
35 struct nouveau_timer *ptimer = nouveau_timer(obj);
36 u64 time0;
37
38 time0 = ptimer->read(ptimer);
39 do {
40 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
41 if ((nv_rd32(obj, addr) & mask) == data)
42 return true;
43 } else {
44 if ((nv_ro32(obj, addr) & mask) == data)
45 return true;
46 }
47 } while (ptimer->read(ptimer) - time0 < nsec);
48
49 return false;
50}
51
52bool
53nouveau_timer_wait_ne(void *obj, u64 nsec, u32 addr, u32 mask, u32 data)
54{
55 struct nouveau_timer *ptimer = nouveau_timer(obj);
56 u64 time0;
57
58 time0 = ptimer->read(ptimer);
59 do {
60 if (nv_iclass(obj, NV_SUBDEV_CLASS)) {
61 if ((nv_rd32(obj, addr) & mask) != data)
62 return true;
63 } else {
64 if ((nv_ro32(obj, addr) & mask) != data)
65 return true;
66 }
67 } while (ptimer->read(ptimer) - time0 < nsec);
68
69 return false;
70}
71
72bool
73nouveau_timer_wait_cb(void *obj, u64 nsec, bool (*func)(void *), void *data)
74{
75 struct nouveau_timer *ptimer = nouveau_timer(obj);
76 u64 time0;
77
78 time0 = ptimer->read(ptimer);
79 do {
80 if (func(data) == true)
81 return true;
82 } while (ptimer->read(ptimer) - time0 < nsec);
83
84 return false;
85}
86
87void
88nouveau_timer_alarm(void *obj, u32 nsec, struct nouveau_alarm *alarm)
89{
90 struct nouveau_timer *ptimer = nouveau_timer(obj);
91 ptimer->alarm(ptimer, nsec, alarm);
92}
93
94void
95nouveau_timer_alarm_cancel(void *obj, struct nouveau_alarm *alarm)
96{
97 struct nouveau_timer *ptimer = nouveau_timer(obj);
98 ptimer->alarm_cancel(ptimer, alarm);
99}
100