1 /*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 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 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 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 #include "opt_xbox.h" 64 65 #ifdef XBOX 66 #include <machine/xbox.h> 67 #endif 68 69 static devclass_t sc_devclass; 70 71 static sc_softc_t main_softc; 72 73 static void 74 scidentify(driver_t *driver, device_t parent) 75 { 76 77 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 78 } 79 80 static int 81 scprobe(device_t dev) 82 { 83 84 /* No pnp support */ 85 if (isa_get_vendorid(dev)) 86 return (ENXIO); 87 88 device_set_desc(dev, "System console"); 89 return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev))); 90 } 91 92 static int 93 scattach(device_t dev) 94 { 95 96 return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) | 97 SC_AUTODETECT_KBD)); 98 } 99 100 int 101 sc_max_unit(void) 102 { 103 104 return (devclass_get_maxunit(sc_devclass)); 105 } 106 107 sc_softc_t 108 *sc_get_softc(int unit, int flags) 109 { 110 sc_softc_t *sc; 111 112 if (unit < 0) 113 return (NULL); 114 if ((flags & SC_KERNEL_CONSOLE) != 0) { 115 /* FIXME: clear if it is wired to another unit! */ 116 sc = &main_softc; 117 } else { 118 sc = device_get_softc(devclass_get_device(sc_devclass, unit)); 119 if (sc == NULL) 120 return (NULL); 121 } 122 sc->unit = unit; 123 if ((sc->flags & SC_INIT_DONE) == 0) { 124 sc->keyboard = -1; 125 sc->adapter = -1; 126 sc->cursor_char = SC_CURSOR_CHAR; 127 sc->mouse_char = SC_MOUSE_CHAR; 128 } 129 return (sc); 130 } 131 132 sc_softc_t 133 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 134 { 135 sc_softc_t *sc; 136 int i; 137 int units; 138 139 sc = &main_softc; 140 if ((adp == NULL || adp == sc->adp) && 141 (kbd == NULL || kbd == sc->kbd)) 142 return (sc); 143 units = devclass_get_maxunit(sc_devclass); 144 for (i = 0; i < units; ++i) { 145 sc = device_get_softc(devclass_get_device(sc_devclass, i)); 146 if (sc == NULL) 147 continue; 148 if ((adp == NULL || adp == sc->adp) && 149 (kbd == NULL || kbd == sc->kbd)) 150 return (sc); 151 } 152 return (NULL); 153 } 154 155 int 156 sc_get_cons_priority(int *unit, int *flags) 157 { 158 const char *at; 159 int f, u; 160 161 #ifdef XBOX 162 /* 163 * The XBox Loader does not support hints, which makes our initial 164 * console probe fail. Therefore, if an XBox is found, we hardcode the 165 * existence of the console, as it is always there anyway. 166 */ 167 if (arch_i386_is_xbox) { 168 *unit = 0; 169 *flags = SC_KERNEL_CONSOLE; 170 return (CN_INTERNAL); 171 } 172 #endif 173 174 *unit = -1; 175 for (u = 0; u < 16; u++) { 176 if (resource_disabled(SC_DRIVER_NAME, u)) 177 continue; 178 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 179 continue; 180 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 181 f = 0; 182 if (f & SC_KERNEL_CONSOLE) { 183 /* the user designates this unit to be the console */ 184 *unit = u; 185 *flags = f; 186 break; 187 } 188 if (*unit < 0) { 189 /* ...otherwise remember the first found unit */ 190 *unit = u; 191 *flags = f; 192 } 193 } 194 if (*unit < 0) { 195 *unit = 0; 196 *flags = 0; 197 } 198 #if 0 199 return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL); 200 #endif 201 return (CN_INTERNAL); 202 } 203 204 void 205 sc_get_bios_values(bios_values_t *values) 206 { 207 #if defined(__i386__) || defined(__amd64__) 208 uint8_t shift; 209 210 values->cursor_start = *(uint8_t *)BIOS_PADDRTOVADDR(0x461); 211 values->cursor_end = *(uint8_t *)BIOS_PADDRTOVADDR(0x460); 212 shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417); 213 values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) | 214 ((shift & BIOS_NLKED) != 0 ? NLKED : 0) | 215 ((shift & BIOS_SLKED) != 0 ? SLKED : 0) | 216 ((shift & BIOS_ALKED) != 0 ? ALKED : 0); 217 #else 218 values->cursor_start = 0; 219 values->cursor_end = 32; 220 values->shift_state = 0; 221 #endif 222 values->bell_pitch = BELL_PITCH; 223 } 224 225 int 226 sc_tone(int herz) 227 { 228 229 #if defined(HAS_TIMER_SPKR) 230 if (herz) { 231 if (timer_spkr_acquire()) 232 return (EBUSY); 233 timer_spkr_setfreq(herz); 234 } else 235 timer_spkr_release(); 236 #endif 237 238 return (0); 239 } 240 241 static device_method_t sc_methods[] = { 242 DEVMETHOD(device_identify, scidentify), 243 DEVMETHOD(device_probe, scprobe), 244 DEVMETHOD(device_attach, scattach), 245 { 0, 0 } 246 }; 247 248 static driver_t sc_driver = { 249 SC_DRIVER_NAME, 250 sc_methods, 251 sizeof(sc_softc_t), 252 }; 253 254 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 255