syscons_cbus.c revision 103379 
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 103379 2002-09-16 07:11:43Z nyan $
27 */
28
29#include "opt_syscons.h"
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <sys/bus.h>
36#include <sys/cons.h>
37#include <sys/consio.h>
38
39#include <machine/clock.h>
40
41#include <pc98/pc98/pc98.h>
42#include <pc98/pc98/pc98_machdep.h>
43
44#include <dev/syscons/syscons.h>
45
46#include <i386/isa/timerreg.h>
47
48#include <isa/isavar.h>
49
50static devclass_t	sc_devclass;
51
52static sc_softc_t main_softc;
53
54static void
55scidentify (driver_t *driver, device_t parent)
56{
57	BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
58}
59
60static int
61scprobe(device_t dev)
62{
63	/* No pnp support */
64	if (isa_get_vendorid(dev))
65		return (ENXIO);
66
67	device_set_desc(dev, "System console");
68	return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
69}
70
71static int
72scattach(device_t dev)
73{
74	return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
75}
76
77static int	sc_cur_scr;
78
79static int
80scsuspend(device_t dev)
81{
82	int		retry = 10;
83	static int	dummy;
84	sc_softc_t	*sc;
85
86	sc = &main_softc;
87	sc_cur_scr = sc->cur_scp->index;
88	do {
89		sc_switch_scr(sc, 0);
90		if (!sc->switch_in_progress) {
91			break;
92		}
93		tsleep(&dummy, 0, "scsuspend", 100);
94	} while (retry--);
95
96	return (0);
97}
98
99static int
100scresume(device_t dev)
101{
102	sc_softc_t	*sc;
103
104	sc = &main_softc;
105	sc_switch_scr(sc, sc_cur_scr);
106
107	return (0);
108}
109
110int
111sc_max_unit(void)
112{
113	return devclass_get_maxunit(sc_devclass);
114}
115
116sc_softc_t
117*sc_get_softc(int unit, int flags)
118{
119	sc_softc_t *sc;
120
121	if (unit < 0)
122		return NULL;
123	if (flags & SC_KERNEL_CONSOLE) {
124		/* FIXME: clear if it is wired to another unit! */
125		sc = &main_softc;
126	} else {
127	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
128		if (sc == NULL)
129			return NULL;
130	}
131	sc->unit = unit;
132	if (!(sc->flags & SC_INIT_DONE)) {
133		sc->keyboard = -1;
134		sc->adapter = -1;
135		sc->mouse_char = SC_MOUSE_CHAR;
136	}
137	return sc;
138}
139
140sc_softc_t
141*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
142{
143	sc_softc_t *sc;
144	int units;
145	int i;
146
147	sc = &main_softc;
148	if (((adp == NULL) || (adp == sc->adp))
149	    && ((kbd == NULL) || (kbd == sc->kbd)))
150		return sc;
151	units = devclass_get_maxunit(sc_devclass);
152	for (i = 0; i < units; ++i) {
153	        sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
154		if (sc == NULL)
155			continue;
156		if (((adp == NULL) || (adp == sc->adp))
157		    && ((kbd == NULL) || (kbd == sc->kbd)))
158			return sc;
159	}
160	return NULL;
161}
162
163int
164sc_get_cons_priority(int *unit, int *flags)
165{
166	int disabled;
167	const char *at;
168	int u, f;
169
170	*unit = -1;
171	for (u = 0; u < 16; u++) {
172		if ((resource_int_value(SC_DRIVER_NAME, u, "disabled",
173					&disabled) == 0) && disabled)
174			continue;
175		if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
176			continue;
177		if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
178			f = 0;
179		if (f & SC_KERNEL_CONSOLE) {
180			/* the user designates this unit to be the console */
181			*unit = u;
182			*flags = f;
183			break;
184		}
185		if (*unit < 0) {
186			/* ...otherwise remember the first found unit */
187			*unit = u;
188			*flags = f;
189		}
190	}
191	if (*unit < 0)
192		return CN_DEAD;
193	return CN_INTERNAL;
194}
195
196void
197sc_get_bios_values(bios_values_t *values)
198{
199	values->cursor_start = 15;
200	values->cursor_end = 16;
201	values->shift_state = 0;
202	if (pc98_machine_type & M_8M)
203		values->bell_pitch = BELL_PITCH_8M;
204	else
205		values->bell_pitch = BELL_PITCH_5M;
206}
207
208int
209sc_tone(int herz)
210{
211	int pitch;
212
213	if (herz) {
214		/* enable counter 1 */
215		outb(0x35, inb(0x35) & 0xf7);
216		/* set command for counter 1, 2 byte write */
217		if (acquire_timer1(TIMER_16BIT | TIMER_SQWAVE))
218			return EBUSY;
219		/* set pitch */
220		pitch = timer_freq/herz;
221		outb(TIMER_CNTR1, pitch);
222		outb(TIMER_CNTR1, pitch >> 8);
223	} else {
224		/* disable counter 1 */
225		outb(0x35, inb(0x35) | 0x08);
226		release_timer1();
227	}
228	return 0;
229}
230
231static device_method_t sc_methods[] = {
232	DEVMETHOD(device_identify,	scidentify),
233	DEVMETHOD(device_probe,         scprobe),
234	DEVMETHOD(device_attach,        scattach),
235	DEVMETHOD(device_suspend,       scsuspend),
236	DEVMETHOD(device_resume,        scresume),
237	{ 0, 0 }
238};
239
240static driver_t sc_driver = {
241	SC_DRIVER_NAME,
242	sc_methods,
243	sizeof(sc_softc_t),
244};
245
246DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
247