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 * $FreeBSD$
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 #include <sys/sysctl.h>
39
40 #include <machine/clock.h>
41 #include <machine/ppireg.h>
42 #include <machine/timerreg.h>
43
44 #include <pc98/pc98/pc98_machdep.h>
45
46 #include <dev/syscons/syscons.h>
47
48 #include <isa/isavar.h>
49
50 static devclass_t sc_devclass;
51
52 static sc_softc_t main_softc;
53 #ifdef SC_NO_SUSPEND_VTYSWITCH
54 static int sc_no_suspend_vtswitch = 1;
55 #else
56 static int sc_no_suspend_vtswitch = 0;
57 #endif
58 static int sc_cur_scr;
59
60 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch);
61 SYSCTL_DECL(_hw_syscons);
62 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW,
63 &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend.");
64
65 static void
66 scidentify (driver_t *driver, device_t parent)
67 {
68 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
69 }
70
71 static int
72 scprobe(device_t dev)
73 {
74 /* No pnp support */
75 if (isa_get_vendorid(dev))
76 return (ENXIO);
77
78 device_set_desc(dev, "System console");
79 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev));
80 }
81
82 static int
83 scattach(device_t dev)
84 {
85 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev));
86 }
87
88 static int
89 scsuspend(device_t dev)
90 {
91 int retry = 10;
92 sc_softc_t *sc;
93
94 sc = &main_softc;
95
96 if (sc->cur_scp == NULL)
97 return (0);
98
99 sc_cur_scr = sc->cur_scp->index;
100
101 if (sc_no_suspend_vtswitch)
102 return (0);
103
104 do {
105 sc_switch_scr(sc, 0);
106 if (!sc->switch_in_progress) {
107 break;
108 }
109 pause("scsuspend", hz);
110 } while (retry--);
111
112 return (0);
113 }
114
115 static int
116 scresume(device_t dev)
117 {
118 sc_softc_t *sc;
119
120 if (sc_no_suspend_vtswitch)
121 return (0);
122
123 sc = &main_softc;
124 sc_switch_scr(sc, sc_cur_scr);
125
126 return (0);
127 }
128
129 int
130 sc_max_unit(void)
131 {
132 return devclass_get_maxunit(sc_devclass);
133 }
134
135 sc_softc_t
136 *sc_get_softc(int unit, int flags)
137 {
138 sc_softc_t *sc;
139
140 if (unit < 0)
141 return NULL;
142 if (flags & SC_KERNEL_CONSOLE) {
143 /* FIXME: clear if it is wired to another unit! */
144 sc = &main_softc;
145 } else {
146 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit));
147 if (sc == NULL)
148 return NULL;
149 }
150 sc->unit = unit;
151 if (!(sc->flags & SC_INIT_DONE)) {
152 sc->keyboard = -1;
153 sc->adapter = -1;
154 sc->mouse_char = SC_MOUSE_CHAR;
155 }
156 return sc;
157 }
158
159 sc_softc_t
160 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
161 {
162 sc_softc_t *sc;
163 int units;
164 int i;
165
166 sc = &main_softc;
167 if (((adp == NULL) || (adp == sc->adp))
168 && ((kbd == NULL) || (kbd == sc->kbd)))
169 return sc;
170 units = devclass_get_maxunit(sc_devclass);
171 for (i = 0; i < units; ++i) {
172 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i));
173 if (sc == NULL)
174 continue;
175 if (((adp == NULL) || (adp == sc->adp))
176 && ((kbd == NULL) || (kbd == sc->kbd)))
177 return sc;
178 }
179 return NULL;
180 }
181
182 int
183 sc_get_cons_priority(int *unit, int *flags)
184 {
185 const char *at;
186 int u, f;
187
188 *unit = -1;
189 for (u = 0; u < 16; u++) {
190 if (resource_disabled(SC_DRIVER_NAME, u))
191 continue;
192 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
193 continue;
194 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0)
195 f = 0;
196 if (f & SC_KERNEL_CONSOLE) {
197 /* the user designates this unit to be the console */
198 *unit = u;
199 *flags = f;
200 break;
201 }
202 if (*unit < 0) {
203 /* ...otherwise remember the first found unit */
204 *unit = u;
205 *flags = f;
206 }
207 }
208 if (*unit < 0) {
209 *unit = 0;
210 *flags = 0;
211 }
212 return CN_INTERNAL;
213 }
214
215 void
216 sc_get_bios_values(bios_values_t *values)
217 {
218 values->cursor_start = 15;
219 values->cursor_end = 16;
220 values->shift_state = 0;
221 if (pc98_machine_type & M_8M)
222 values->bell_pitch = BELL_PITCH_8M;
223 else
224 values->bell_pitch = BELL_PITCH_5M;
225 }
226
227 int
228 sc_tone(int herz)
229 {
230
231 if (herz) {
232 /* enable counter 1 */
233 ppi_spkr_on();
234 /* set command for counter 1, 2 byte write */
235 if (timer_spkr_acquire())
236 return EBUSY;
237 /* set pitch */
238 spkr_set_pitch(timer_freq / herz);
239 } else {
240 /* disable counter 1 */
241 ppi_spkr_off();
242 timer_spkr_release();
243 }
244 return 0;
245 }
246
247 static device_method_t sc_methods[] = {
248 DEVMETHOD(device_identify, scidentify),
249 DEVMETHOD(device_probe, scprobe),
250 DEVMETHOD(device_attach, scattach),
251 DEVMETHOD(device_suspend, scsuspend),
252 DEVMETHOD(device_resume, scresume),
253 { 0, 0 }
254 };
255
256 static driver_t sc_driver = {
257 SC_DRIVER_NAME,
258 sc_methods,
259 sizeof(sc_softc_t),
260 };
261
262 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0);
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