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 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 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 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 93 sc_max_unit(void) 94 { 95 96 return (devclass_get_maxunit(devclass_find("sc"))); 97 } 98 99 sc_softc_t 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 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 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 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 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