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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* $OpenBSD: gscpm.c,v 1.8 2010/08/02 04:37:42 deraadt Exp $ */
/*
* Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* National Semiconductor Geode SC1100 SMI/ACPI module.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#ifdef __HAVE_TIMECOUNTER
#include <sys/timetc.h>
#endif
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <i386/pci/gscpmreg.h>
struct gscpm_softc {
struct device sc_dev;
pci_chipset_tag_t sc_pc;
pcitag_t sc_tag;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_acpi_ioh;
};
int gscpm_match(struct device *, void *, void *);
void gscpm_attach(struct device *, struct device *, void *);
void gscpm_setperf(int);
#ifdef __HAVE_TIMECOUNTER
u_int gscpm_get_timecount(struct timecounter *tc);
struct timecounter gscpm_timecounter = {
gscpm_get_timecount, /* get_timecount */
0, /* no poll_pps */
0xffffff, /* counter_mask */
3579545, /* frequency */
"GSCPM", /* name */
1000 /* quality */
};
#endif /* __HAVE_TIMECOUNTER */
struct cfattach gscpm_ca = {
sizeof (struct gscpm_softc),
gscpm_match,
gscpm_attach
};
struct cfdriver gscpm_cd = {
NULL, "gscpm", DV_DULL
};
#if 0
static void *gscpm_cookie; /* XXX */
#endif
int
gscpm_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NS &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_SC1100_SMI)
return (1);
return (0);
}
void
gscpm_attach(struct device *parent, struct device *self, void *aux)
{
struct gscpm_softc *sc = (struct gscpm_softc *)self;
struct pci_attach_args *pa = aux;
pcireg_t csr, acpibase;
sc->sc_pc = pa->pa_pc;
sc->sc_tag = pa->pa_tag;
sc->sc_iot = pa->pa_iot;
/* Enable I/O space */
csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG,
csr | PCI_COMMAND_IO_ENABLE);
/* Map ACPI registers */
acpibase = pci_conf_read(sc->sc_pc, sc->sc_tag, GSCPM_ACPIBASE);
if (PCI_MAPREG_IO_ADDR(acpibase) == 0 ||
bus_space_map(sc->sc_iot, PCI_MAPREG_IO_ADDR(acpibase),
GSCPM_ACPISIZE, 0, &sc->sc_acpi_ioh)) {
printf(": failed to map ACPI registers\n");
return;
}
printf("\n");
#ifdef __HAVE_TIMECOUNTER
/* Hook into the kern_tc */
gscpm_timecounter.tc_priv = sc;
tc_init(&gscpm_timecounter);
#endif /* __HAVE_TIMECOUNTER */
/* XXX: disabled due to unresolved yet hardware errata */
#if 0
/* Hook into the hw.setperf sysctl */
gscpm_cookie = sc;
cpu_setperf = gscpm_setperf;
#endif
}
#ifdef __HAVE_TIMECOUNTER
u_int
gscpm_get_timecount(struct timecounter *tc)
{
struct gscpm_softc *sc = tc->tc_priv;
return (bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_PM_TMR));
}
#endif /* __HAVE_TIMECOUNTER */
#if 0
void
gscpm_setperf(int level)
{
struct gscpm_softc *sc = gscpm_cookie;
int i;
u_int32_t pctl;
pctl = bus_space_read_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_P_CNT);
if (level == 100) {
/* 100 is a maximum perfomance, disable throttling */
pctl &= ~GSCPM_P_CNT_THTEN;
} else {
for (i = 0; i < GSCPM_THT_LEVELS; i++)
if (level >= gscpm_tht[i].level)
break;
pctl = (0xf0 | GSCPM_P_CNT_THTEN |
GSCPM_P_CNT_CLK(gscpm_tht[i].value));
}
/* Update processor control register */
bus_space_write_4(sc->sc_iot, sc->sc_acpi_ioh, GSCPM_P_CNT, pctl);
}
#endif
|
