Make doubly sure that timer2 is not used for speaker operation.
[dragonfly.git] / sys / bus / isa / syscons_isa.c
CommitLineData
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1/*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/isa/syscons_isa.c,v 1.11.2.2 2001/08/01 10:42:28 yokota Exp $
0284027e 27 * $DragonFly: src/sys/bus/isa/syscons_isa.c,v 1.5 2004/08/02 23:20:28 dillon Exp $
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28 */
29
30#include "opt_syscons.h"
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>
35#include <sys/module.h>
88c4d2f6 36#include <sys/systimer.h>
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37#include <sys/bus.h>
38#include <sys/cons.h>
39
40#include <machine/console.h>
41
42#ifdef __i386__
43
44#include <machine/clock.h>
45#include <machine/md_var.h>
46#include <machine/pc/bios.h>
47
48#include <vm/vm.h>
49#include <vm/pmap.h>
50
51#include <i386/isa/timerreg.h>
52
53#define BIOS_CLKED (1 << 6)
54#define BIOS_NLKED (1 << 5)
55#define BIOS_SLKED (1 << 4)
56#define BIOS_ALKED 0
57
58#endif /* __i386__ */
59
1f2de5d4 60#include <dev/misc/syscons/syscons.h>
984263bc 61
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62#include "isareg.h"
63#include "isavar.h"
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64
65static devclass_t sc_devclass;
66
67static int scprobe(device_t dev);
68static int scattach(device_t dev);
69
70static device_method_t sc_methods[] = {
71 DEVMETHOD(device_probe, scprobe),
72 DEVMETHOD(device_attach, scattach),
73 { 0, 0 }
74};
75
76static driver_t sc_driver = {
77 SC_DRIVER_NAME,
78 sc_methods,
79 sizeof(sc_softc_t),
80};
81
82static sc_softc_t main_softc;
83
84static int
85scprobe(device_t dev)
86{
87 /* No pnp support */
88 if (isa_get_vendorid(dev))
89 return (ENXIO);
90
91 device_set_desc(dev, "System console");
92 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
93}
94
95static int
96scattach(device_t dev)
97{
98 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
99}
100
101int
102sc_max_unit(void)
103{
104 return devclass_get_maxunit(sc_devclass);
105}
106
107sc_softc_t
108*sc_get_softc(int unit, int flags)
109{
110 sc_softc_t *sc;
111
112 if (unit < 0)
113 return NULL;
114 if (flags & SC_KERNEL_CONSOLE) {
115 /* FIXME: clear if it is wired to another unit! */
116 sc = &main_softc;
117 } else {
118 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
119 if (sc == NULL)
120 return NULL;
121 }
122 sc->unit = unit;
123 if (!(sc->flags & SC_INIT_DONE)) {
124 sc->keyboard = -1;
125 sc->adapter = -1;
126 sc->cursor_char = SC_CURSOR_CHAR;
127 sc->mouse_char = SC_MOUSE_CHAR;
128 }
129 return sc;
130}
131
132sc_softc_t
133*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
134{
135 sc_softc_t *sc;
136 int units;
137 int i;
138
139 sc = &main_softc;
140 if (((adp == NULL) || (adp == sc->adp))
141 && ((kbd == NULL) || (kbd == sc->kbd)))
142 return sc;
143 units = devclass_get_maxunit(sc_devclass);
144 for (i = 0; i < units; ++i) {
145 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
146 if (sc == NULL)
147 continue;
148 if (((adp == NULL) || (adp == sc->adp))
149 && ((kbd == NULL) || (kbd == sc->kbd)))
150 return sc;
151 }
152 return NULL;
153}
154
155int
156sc_get_cons_priority(int *unit, int *flags)
157{
158 int disabled;
159 int u, f;
160 int i;
161
162 *unit = -1;
163 for (i = -1; (i = resource_locate(i, SC_DRIVER_NAME)) >= 0;) {
164 u = resource_query_unit(i);
165 if ((resource_int_value(SC_DRIVER_NAME, u, "disabled",
166 &disabled) == 0) && disabled)
167 continue;
168 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
169 f = 0;
170 if (f & SC_KERNEL_CONSOLE) {
171 /* the user designates this unit to be the console */
172 *unit = u;
173 *flags = f;
174 break;
175 }
176 if (*unit < 0) {
177 /* ...otherwise remember the first found unit */
178 *unit = u;
179 *flags = f;
180 }
181 }
182 if ((i < 0) && (*unit < 0))
183 return CN_DEAD;
184#if 0
185 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL);
186#endif
187 return CN_INTERNAL;
188}
189
190void
191sc_get_bios_values(bios_values_t *values)
192{
193#ifdef __i386__
194 u_int8_t shift;
195
196 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461);
197 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460);
198 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417);
199 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0)
200 | ((shift & BIOS_NLKED) ? NLKED : 0)
201 | ((shift & BIOS_SLKED) ? SLKED : 0)
202 | ((shift & BIOS_ALKED) ? ALKED : 0);
203 values->bell_pitch = BELL_PITCH;
204#else /* !__i386__ */
205 values->cursor_start = 0;
206 values->cursor_end = 32;
207 values->shift_state = 0;
208 values->bell_pitch = BELL_PITCH;
209#endif /* __i386__ */
210}
211
212int
213sc_tone(int herz)
214{
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215 return EBUSY;
216#if 0
217 /* XXX use sound device if available */
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218#ifdef __i386__
219 int pitch;
220
221 if (herz) {
222 /* set command for counter 2, 2 byte write */
223 if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE))
224 return EBUSY;
225 /* set pitch */
88c4d2f6 226 pitch = cputimer_freq/herz;
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227 outb(TIMER_CNTR2, pitch);
228 outb(TIMER_CNTR2, pitch >> 8);
229 /* enable counter 2 output to speaker */
230 outb(IO_PPI, inb(IO_PPI) | 3);
231 } else {
232 /* disable counter 2 output to speaker */
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233 if (release_timer2() == 0)
234 outb(IO_PPI, inb(IO_PPI) & 0xFC);
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235 }
236#endif /* __i386__ */
237
238 return 0;
0284027e 239#endif
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240}
241
242DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);