1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* $OpenBSD: power.c,v 1.6 2011/06/24 19:47:49 naddy Exp $ */
/*
* Copyright (c) 2006 Jason L. Wright (jason@thought.net)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for power-button device on U5, U10, etc.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/timeout.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <sparc64/dev/ebusreg.h>
#include <sparc64/dev/ebusvar.h>
#define POWER_REG 0
#define POWER_REG_CPWR_OFF 0x00000002 /* courtesy power off */
#define POWER_REG_SPWR_OFF 0x00000001 /* system power off */
struct power_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct intrhand *sc_ih;
};
int power_match(struct device *, void *, void *);
void power_attach(struct device *, struct device *, void *);
int power_intr(void *);
struct cfattach power_ca = {
sizeof(struct power_softc), power_match, power_attach
};
struct cfdriver power_cd = {
NULL, "power", DV_DULL
};
int
power_match(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct ebus_attach_args *ea = aux;
if (strcmp(ea->ea_name, "power") == 0)
return (1);
return (0);
}
void
power_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct power_softc *sc = (void *)self;
struct ebus_attach_args *ea = aux;
if (ea->ea_nregs < 1) {
printf(": no registers\n");
return;
}
/* Use prom address if available, otherwise map it. */
if (ea->ea_nvaddrs) {
if (bus_space_map(ea->ea_memtag, ea->ea_vaddrs[0], 0,
BUS_SPACE_MAP_PROMADDRESS, &sc->sc_ioh)) {
printf(": can't map PROM register space\n");
return;
}
sc->sc_iot = ea->ea_memtag;
} else if (ebus_bus_map(ea->ea_iotag, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
sc->sc_iot = ea->ea_iotag;
} else if (ebus_bus_map(ea->ea_memtag, 0,
EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
sc->sc_iot = ea->ea_memtag;
} else {
printf("%s: can't map register space\n", self->dv_xname);
return;
}
if (ea->ea_nintrs > 0 && OF_getproplen(ea->ea_node, "button") >= 0) {
sc->sc_ih = bus_intr_establish(sc->sc_iot, ea->ea_intrs[0],
IPL_BIO, 0, power_intr, sc, self->dv_xname);
if (sc->sc_ih == NULL) {
printf(": can't establish interrupt\n");
return;
}
}
printf("\n");
}
int
power_intr(void *vsc)
{
extern int allowpowerdown;
if (allowpowerdown == 1) {
allowpowerdown = 0;
psignal(initproc, SIGUSR2);
}
return (1);
}
|
