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 #ifdef SC_NO_SUSPEND_VTYSWITCH 73 static int sc_no_suspend_vtswitch = 1; 74 #else 75 static int sc_no_suspend_vtswitch = 0; 76 #endif 77 static int sc_cur_scr; 78 79 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch); 80 SYSCTL_DECL(_hw_syscons); 81 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW, 82 &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend."); 83 84 static void 85 scidentify (driver_t *driver, device_t parent) 86 { 87 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 88 } 89 90 static int 91 scprobe(device_t dev) 92 { 93 /* No pnp support */ 94 if (isa_get_vendorid(dev)) 95 return (ENXIO); 96 97 device_set_desc(dev, "System console"); 98 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev)); 99 } 100 101 static int 102 scattach(device_t dev) 103 { 104 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev)); 105 } 106 107 static int 108 scsuspend(device_t dev) 109 { 110 int retry = 10; 111 sc_softc_t *sc; 112 113 sc = &main_softc; 114 115 if (sc->cur_scp == NULL) 116 return (0); 117 118 sc_cur_scr = sc->cur_scp->index; 119 120 if (sc_no_suspend_vtswitch) 121 return (0); 122 123 do { 124 sc_switch_scr(sc, 0); 125 if (!sc->switch_in_progress) { 126 break; 127 } 128 pause("scsuspend", hz); 129 } while (retry--); 130 131 return (0); 132 } 133 134 static int 135 scresume(device_t dev) 136 { 137 sc_softc_t *sc; 138 139 if (sc_no_suspend_vtswitch) 140 return (0); 141 142 sc = &main_softc; 143 sc_switch_scr(sc, sc_cur_scr); 144 145 return (0); 146 } 147 148 int 149 sc_max_unit(void) 150 { 151 return devclass_get_maxunit(sc_devclass); 152 } 153 154 sc_softc_t 155 *sc_get_softc(int unit, int flags) 156 { 157 sc_softc_t *sc; 158 159 if (unit < 0) 160 return NULL; 161 if (flags & SC_KERNEL_CONSOLE) { 162 /* FIXME: clear if it is wired to another unit! */ 163 sc = &main_softc; 164 } else { 165 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit)); 166 if (sc == NULL) 167 return NULL; 168 } 169 sc->unit = unit; 170 if (!(sc->flags & SC_INIT_DONE)) { 171 sc->keyboard = -1; 172 sc->adapter = -1; 173 sc->cursor_char = SC_CURSOR_CHAR; 174 sc->mouse_char = SC_MOUSE_CHAR; 175 } 176 return sc; 177 } 178 179 sc_softc_t 180 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 181 { 182 sc_softc_t *sc; 183 int units; 184 int i; 185 186 sc = &main_softc; 187 if (((adp == NULL) || (adp == sc->adp)) 188 && ((kbd == NULL) || (kbd == sc->kbd))) 189 return sc; 190 units = devclass_get_maxunit(sc_devclass); 191 for (i = 0; i < units; ++i) { 192 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i)); 193 if (sc == NULL) 194 continue; 195 if (((adp == NULL) || (adp == sc->adp)) 196 && ((kbd == NULL) || (kbd == sc->kbd))) 197 return sc; 198 } 199 return NULL; 200 } 201 202 int 203 sc_get_cons_priority(int *unit, int *flags) 204 { 205 const char *at; 206 int u, f; 207 208 #ifdef XBOX 209 /* 210 * The XBox Loader does not support hints, which makes our initial 211 * console probe fail. Therefore, if an XBox is found, we hardcode the 212 * existence of the console, as it is always there anyway. 213 */ 214 if (arch_i386_is_xbox) { 215 *unit = 0; 216 *flags = SC_KERNEL_CONSOLE; 217 return CN_INTERNAL; 218 } 219 #endif 220 221 *unit = -1; 222 for (u = 0; u < 16; u++) { 223 if (resource_disabled(SC_DRIVER_NAME, u)) 224 continue; 225 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 226 continue; 227 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 228 f = 0; 229 if (f & SC_KERNEL_CONSOLE) { 230 /* the user designates this unit to be the console */ 231 *unit = u; 232 *flags = f; 233 break; 234 } 235 if (*unit < 0) { 236 /* ...otherwise remember the first found unit */ 237 *unit = u; 238 *flags = f; 239 } 240 } 241 if (*unit < 0) 242 return CN_DEAD; 243 #if 0 244 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL); 245 #endif 246 return CN_INTERNAL; 247 } 248 249 void 250 sc_get_bios_values(bios_values_t *values) 251 { 252 #if defined(__i386__) || defined(__amd64__) 253 u_int8_t shift; 254 255 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461); 256 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460); 257 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417); 258 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0) 259 | ((shift & BIOS_NLKED) ? NLKED : 0) 260 | ((shift & BIOS_SLKED) ? SLKED : 0) 261 | ((shift & BIOS_ALKED) ? ALKED : 0); 262 #else 263 values->cursor_start = 0; 264 values->cursor_end = 32; 265 values->shift_state = 0; 266 #endif 267 values->bell_pitch = BELL_PITCH; 268 } 269 270 int 271 sc_tone(int herz) 272 { 273 #if defined(HAS_TIMER_SPKR) 274 if (herz) { 275 if (timer_spkr_acquire()) 276 return EBUSY; 277 timer_spkr_setfreq(herz); 278 } else { 279 timer_spkr_release(); 280 } 281 #endif 282 283 return 0; 284 } 285 286 static device_method_t sc_methods[] = { 287 DEVMETHOD(device_identify, scidentify), 288 DEVMETHOD(device_probe, scprobe), 289 DEVMETHOD(device_attach, scattach), 290 DEVMETHOD(device_suspend, scsuspend), 291 DEVMETHOD(device_resume, scresume), 292 { 0, 0 } 293 }; 294 295 static driver_t sc_driver = { 296 SC_DRIVER_NAME, 297 sc_methods, 298 sizeof(sc_softc_t), 299 }; 300 301 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 302