1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 31 32 #include "opt_syscons.h" 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 #include <sys/cons.h> 40 #include <sys/kbio.h> 41 #include <sys/consio.h> 42 #include <sys/sysctl.h> 43 44 #if defined(__i386__) || defined(__amd64__) 45 46 #include <machine/clock.h> 47 #include <machine/md_var.h> 48 #include <machine/pc/bios.h> 49 50 #include <vm/vm.h> 51 #include <vm/pmap.h> 52 #include <vm/vm_param.h> 53 54 #define BIOS_CLKED (1 << 6) 55 #define BIOS_NLKED (1 << 5) 56 #define BIOS_SLKED (1 << 4) 57 #define BIOS_ALKED 0 58 59 #endif 60 61 #include <dev/syscons/syscons.h> 62 63 #include <isa/isavar.h> 64 65 static devclass_t sc_devclass; 66 67 static sc_softc_t main_softc; 68 69 static void 70 scidentify(driver_t *driver, device_t parent) 71 { 72 73 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 74 } 75 76 static int 77 scprobe(device_t dev) 78 { 79 80 /* No pnp support */ 81 if (isa_get_vendorid(dev)) 82 return (ENXIO); 83 84 device_set_desc(dev, "System console"); 85 return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev))); 86 } 87 88 static int 89 scattach(device_t dev) 90 { 91 92 return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) | 93 SC_AUTODETECT_KBD)); 94 } 95 96 int 97 sc_max_unit(void) 98 { 99 100 return (devclass_get_maxunit(sc_devclass)); 101 } 102 103 sc_softc_t 104 *sc_get_softc(int unit, int flags) 105 { 106 sc_softc_t *sc; 107 108 if (unit < 0) 109 return (NULL); 110 if ((flags & SC_KERNEL_CONSOLE) != 0) { 111 /* FIXME: clear if it is wired to another unit! */ 112 sc = &main_softc; 113 } else { 114 sc = device_get_softc(devclass_get_device(sc_devclass, unit)); 115 if (sc == NULL) 116 return (NULL); 117 } 118 sc->unit = unit; 119 if ((sc->flags & SC_INIT_DONE) == 0) { 120 sc->keyboard = -1; 121 sc->adapter = -1; 122 sc->cursor_char = SC_CURSOR_CHAR; 123 sc->mouse_char = SC_MOUSE_CHAR; 124 } 125 return (sc); 126 } 127 128 sc_softc_t 129 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 130 { 131 sc_softc_t *sc; 132 int i; 133 int units; 134 135 sc = &main_softc; 136 if ((adp == NULL || adp == sc->adp) && 137 (kbd == NULL || kbd == sc->kbd)) 138 return (sc); 139 units = devclass_get_maxunit(sc_devclass); 140 for (i = 0; i < units; ++i) { 141 sc = device_get_softc(devclass_get_device(sc_devclass, i)); 142 if (sc == NULL) 143 continue; 144 if ((adp == NULL || adp == sc->adp) && 145 (kbd == NULL || kbd == sc->kbd)) 146 return (sc); 147 } 148 return (NULL); 149 } 150 151 int 152 sc_get_cons_priority(int *unit, int *flags) 153 { 154 const char *at; 155 int f, u; 156 157 *unit = -1; 158 for (u = 0; u < 16; u++) { 159 if (resource_disabled(SC_DRIVER_NAME, u)) 160 continue; 161 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 162 continue; 163 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 164 f = 0; 165 if (f & SC_KERNEL_CONSOLE) { 166 /* the user designates this unit to be the console */ 167 *unit = u; 168 *flags = f; 169 break; 170 } 171 if (*unit < 0) { 172 /* ...otherwise remember the first found unit */ 173 *unit = u; 174 *flags = f; 175 } 176 } 177 if (*unit < 0) { 178 *unit = 0; 179 *flags = 0; 180 } 181 #if 0 182 return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL); 183 #endif 184 return (CN_INTERNAL); 185 } 186 187 void 188 sc_get_bios_values(bios_values_t *values) 189 { 190 #if defined(__i386__) || defined(__amd64__) 191 uint8_t shift; 192 193 shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417); 194 values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) | 195 ((shift & BIOS_NLKED) != 0 ? NLKED : 0) | 196 ((shift & BIOS_SLKED) != 0 ? SLKED : 0) | 197 ((shift & BIOS_ALKED) != 0 ? ALKED : 0); 198 #endif 199 values->bell_pitch = BELL_PITCH; 200 } 201 202 int 203 sc_tone(int herz) 204 { 205 206 #if defined(HAS_TIMER_SPKR) 207 if (herz) { 208 if (timer_spkr_acquire()) 209 return (EBUSY); 210 timer_spkr_setfreq(herz); 211 } else 212 timer_spkr_release(); 213 #endif 214 215 return (0); 216 } 217 218 static device_method_t sc_methods[] = { 219 DEVMETHOD(device_identify, scidentify), 220 DEVMETHOD(device_probe, scprobe), 221 DEVMETHOD(device_attach, scattach), 222 { 0, 0 } 223 }; 224 225 static driver_t sc_driver = { 226 SC_DRIVER_NAME, 227 sc_methods, 228 sizeof(sc_softc_t), 229 }; 230 231 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 232