1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer as
12 * the first lines of this file unmodified.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
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>
36 #include <sys/bus.h>
37 #include <sys/cons.h>
38 #include <sys/kbio.h>
39 #include <sys/consio.h>
40 #include <sys/sysctl.h>
41
42 #if defined(__i386__) || defined(__amd64__)
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 #include <vm/vm_param.h>
51
52 #define BIOS_CLKED (1 << 6)
53 #define BIOS_NLKED (1 << 5)
54 #define BIOS_SLKED (1 << 4)
55 #define BIOS_ALKED 0
56
57 #endif
58
59 #include <dev/syscons/syscons.h>
60
61 #include <isa/isavar.h>
62
63 static sc_softc_t main_softc;
64
65 static void
scidentify(driver_t * driver,device_t parent)66 scidentify(driver_t *driver, device_t parent)
67 {
68
69 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0);
70 }
71
72 static int
scprobe(device_t dev)73 scprobe(device_t dev)
74 {
75
76 /* No pnp support */
77 if (isa_get_vendorid(dev))
78 return (ENXIO);
79
80 device_set_desc(dev, "System console");
81 return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev)));
82 }
83
84 static int
scattach(device_t dev)85 scattach(device_t dev)
86 {
87
88 return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) |
89 SC_AUTODETECT_KBD));
90 }
91
92 int
sc_max_unit(void)93 sc_max_unit(void)
94 {
95
96 return (devclass_get_maxunit(devclass_find("sc")));
97 }
98
99 sc_softc_t
sc_get_softc(int unit,int flags)100 *sc_get_softc(int unit, int flags)
101 {
102 sc_softc_t *sc;
103
104 if (unit < 0)
105 return (NULL);
106 if ((flags & SC_KERNEL_CONSOLE) != 0) {
107 /* FIXME: clear if it is wired to another unit! */
108 sc = &main_softc;
109 } else {
110 sc = device_get_softc(devclass_get_device(devclass_find("sc"),
111 unit));
112 if (sc == NULL)
113 return (NULL);
114 }
115 sc->unit = unit;
116 if ((sc->flags & SC_INIT_DONE) == 0) {
117 sc->adapter = -1;
118 sc->cursor_char = SC_CURSOR_CHAR;
119 sc->mouse_char = SC_MOUSE_CHAR;
120 }
121 return (sc);
122 }
123
124 sc_softc_t
sc_find_softc(struct video_adapter * adp,struct keyboard * kbd)125 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd)
126 {
127 devclass_t dc;
128 sc_softc_t *sc;
129 int i;
130 int units;
131
132 sc = &main_softc;
133 if ((adp == NULL || adp == sc->adp) &&
134 (kbd == NULL || kbd == sc->kbd))
135 return (sc);
136 dc = devclass_find("sc");
137 units = devclass_get_maxunit(dc);
138 for (i = 0; i < units; ++i) {
139 sc = device_get_softc(devclass_get_device(dc, i));
140 if (sc == NULL)
141 continue;
142 if ((adp == NULL || adp == sc->adp) &&
143 (kbd == NULL || kbd == sc->kbd))
144 return (sc);
145 }
146 return (NULL);
147 }
148
149 int
sc_get_cons_priority(int * unit,int * flags)150 sc_get_cons_priority(int *unit, int *flags)
151 {
152 const char *at;
153 int f, u;
154
155 *unit = -1;
156 for (u = 0; u < 16; u++) {
157 if (resource_disabled(SC_DRIVER_NAME, u))
158 continue;
159 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0)
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 (*unit < 0) {
176 *unit = 0;
177 *flags = 0;
178 }
179 #if 0
180 return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL);
181 #endif
182 return (CN_INTERNAL);
183 }
184
185 void
sc_get_bios_values(bios_values_t * values)186 sc_get_bios_values(bios_values_t *values)
187 {
188 #if defined(__i386__) || defined(__amd64__)
189 uint8_t shift;
190
191 shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417);
192 values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) |
193 ((shift & BIOS_NLKED) != 0 ? NLKED : 0) |
194 ((shift & BIOS_SLKED) != 0 ? SLKED : 0) |
195 ((shift & BIOS_ALKED) != 0 ? ALKED : 0);
196 #endif
197 values->bell_pitch = BELL_PITCH;
198 }
199
200 int
sc_tone(int herz)201 sc_tone(int herz)
202 {
203
204 #if defined(HAS_TIMER_SPKR)
205 if (herz) {
206 if (timer_spkr_acquire())
207 return (EBUSY);
208 timer_spkr_setfreq(herz);
209 } else
210 timer_spkr_release();
211 #endif
212
213 return (0);
214 }
215
216 static device_method_t sc_methods[] = {
217 DEVMETHOD(device_identify, scidentify),
218 DEVMETHOD(device_probe, scprobe),
219 DEVMETHOD(device_attach, scattach),
220 { 0, 0 }
221 };
222
223 static driver_t sc_driver = {
224 SC_DRIVER_NAME,
225 sc_methods,
226 sizeof(sc_softc_t),
227 };
228
229 DRIVER_MODULE(sc, isa, sc_driver, 0, 0);
230