syscons_cbus.c revision 56337 
1/*-
2 * Copyright (c) 1999 FreeBSD(98) Porting Team.
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: head/sys/pc98/cbus/syscons_cbus.c 56337 2000-01-20 15:16:49Z kato $
27 */
28
29#include "sc.h"
30#include "opt_syscons.h"
31
32#if NSC > 0
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/bus.h>
39
40#include <sys/cons.h>
41#include <machine/console.h>
42#include <machine/clock.h>
43
44#include <pc98/pc98/pc98.h>
45#include <pc98/pc98/pc98_machdep.h>
46
47#include <dev/syscons/syscons.h>
48
49#include <i386/isa/timerreg.h>
50
51#include <isa/isavar.h>
52
53static devclass_t	sc_devclass;
54
55static int	scprobe(device_t dev);
56static int	scattach(device_t dev);
57static int	scresume(device_t dev);
58
59static device_method_t sc_methods[] = {
60	DEVMETHOD(device_probe,         scprobe),
61	DEVMETHOD(device_attach,        scattach),
62	DEVMETHOD(device_resume,        scresume),
63	{ 0, 0 }
64};
65
66static driver_t sc_driver = {
67	SC_DRIVER_NAME,
68	sc_methods,
69	sizeof(sc_softc_t),
70};
71
72static sc_softc_t main_softc;
73
74static int
75scprobe(device_t dev)
76{
77	/* No pnp support */
78	if (isa_get_vendorid(dev))
79		return (ENXIO);
80
81	device_set_desc(dev, "System console");
82	return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
83}
84
85static int
86scattach(device_t dev)
87{
88	return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
89}
90
91static int
92scresume(device_t dev)
93{
94	return sc_resume_unit(device_get_unit(dev));
95}
96
97int
98sc_max_unit(void)
99{
100	return devclass_get_maxunit(sc_devclass);
101}
102
103sc_softc_t
104*sc_get_softc(int unit, int flags)
105{
106	sc_softc_t *sc;
107
108	if ((unit < 0) || (unit >= NSC))
109		return NULL;
110	if (flags & SC_KERNEL_CONSOLE) {
111		/* FIXME: clear if it is wired to another unit! */
112		sc = &main_softc;
113	} else {
114	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
115	}
116	sc->unit = unit;
117	if (!(sc->flags & SC_INIT_DONE)) {
118		sc->keyboard = -1;
119		sc->adapter = -1;
120		sc->mouse_char = SC_MOUSE_CHAR;
121	}
122	return sc;
123}
124
125sc_softc_t
126*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
127{
128	sc_softc_t *sc;
129	int units;
130	int i;
131
132	sc = &main_softc;
133	if (((adp == NULL) || (adp == sc->adp))
134	    && ((kbd == NULL) || (kbd == sc->kbd)))
135		return sc;
136	units = devclass_get_maxunit(sc_devclass);
137	for (i = 0; i < units; ++i) {
138	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
139		if (sc == NULL)
140			continue;
141		if (((adp == NULL) || (adp == sc->adp))
142		    && ((kbd == NULL) || (kbd == sc->kbd)))
143			return sc;
144	}
145	return NULL;
146}
147
148int
149sc_get_cons_priority(int *unit, int *flags)
150{
151	int disabled;
152	int u, f;
153	int i;
154
155	*unit = -1;
156	for (i = -1; (i = resource_locate(i, SC_DRIVER_NAME)) >= 0;) {
157		u = resource_query_unit(i);
158		if ((resource_int_value(SC_DRIVER_NAME, u, "disabled",
159					&disabled) == 0) && disabled)
160			continue;
161		if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
162			f = 0;
163		if (f & SC_KERNEL_CONSOLE) {
164			/* the user designates this unit to be the console */
165			*unit = u;
166			*flags = f;
167			break;
168		}
169		if (*unit < 0) {
170			/* ...otherwise remember the first found unit */
171			*unit = u;
172			*flags = f;
173		}
174	}
175	if ((i < 0) && (*unit < 0))
176		return CN_DEAD;
177	return CN_INTERNAL;
178}
179
180void
181sc_get_bios_values(bios_values_t *values)
182{
183	values->cursor_start = 0;
184	values->cursor_end = 16;
185	values->shift_state = 0;
186	if (pc98_machine_type & M_8M)
187		values->bell_pitch = BELL_PITCH_8M;
188	else
189		values->bell_pitch = BELL_PITCH_5M;
190}
191
192int
193sc_tone(int herz)
194{
195	int pitch;
196
197	if (herz) {
198		/* enable counter 1 */
199		outb(0x35, inb(0x35) & 0xf7);
200		/* set command for counter 1, 2 byte write */
201		if (acquire_timer1(TIMER_16BIT | TIMER_SQWAVE))
202			return EBUSY;
203		/* set pitch */
204		pitch = timer_freq/herz;
205		outb(TIMER_CNTR1, pitch);
206		outb(TIMER_CNTR1, pitch >> 8);
207	} else {
208		/* disable counter 1 */
209		outb(0x35, inb(0x35) | 0x08);
210		release_timer1();
211	}
212	return 0;
213}
214
215DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
216
217#endif /* NSC > 0 */
218