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", &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 88 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 89 } 90 91 static int 92 scprobe(device_t dev) 93 { 94 95 /* No pnp support */ 96 if (isa_get_vendorid(dev)) 97 return (ENXIO); 98 99 device_set_desc(dev, "System console"); 100 return (sc_probe_unit(device_get_unit(dev), device_get_flags(dev))); 101 } 102 103 static int 104 scattach(device_t dev) 105 { 106 107 return (sc_attach_unit(device_get_unit(dev), device_get_flags(dev) | 108 SC_AUTODETECT_KBD)); 109 } 110 111 static int 112 scsuspend(device_t dev) 113 { 114 int retry = 10; 115 sc_softc_t *sc; 116 117 sc = &main_softc; 118 119 if (sc->cur_scp == NULL) 120 return (0); 121 122 if (sc->suspend_in_progress == 0) { 123 sc_cur_scr = sc->cur_scp->index; 124 if (!sc_no_suspend_vtswitch && sc_cur_scr != 0) 125 do { 126 sc_switch_scr(sc, 0); 127 if (!sc->switch_in_progress) 128 break; 129 pause("scsuspend", hz); 130 } while (retry--); 131 } 132 sc->suspend_in_progress++; 133 134 return (0); 135 } 136 137 static int 138 scresume(device_t dev) 139 { 140 sc_softc_t *sc; 141 142 sc = &main_softc; 143 144 if (sc->cur_scp == NULL) 145 return (0); 146 147 sc->suspend_in_progress--; 148 if (sc->suspend_in_progress == 0) { 149 if (!sc_no_suspend_vtswitch && sc_cur_scr != 0) 150 sc_switch_scr(sc, sc_cur_scr); 151 else 152 mark_all(sc->cur_scp); 153 } 154 155 return (0); 156 } 157 158 int 159 sc_max_unit(void) 160 { 161 162 return (devclass_get_maxunit(sc_devclass)); 163 } 164 165 sc_softc_t 166 *sc_get_softc(int unit, int flags) 167 { 168 sc_softc_t *sc; 169 170 if (unit < 0) 171 return (NULL); 172 if ((flags & SC_KERNEL_CONSOLE) != 0) { 173 /* FIXME: clear if it is wired to another unit! */ 174 sc = &main_softc; 175 } else { 176 sc = device_get_softc(devclass_get_device(sc_devclass, unit)); 177 if (sc == NULL) 178 return (NULL); 179 } 180 sc->unit = unit; 181 if ((sc->flags & SC_INIT_DONE) == 0) { 182 sc->keyboard = -1; 183 sc->adapter = -1; 184 sc->cursor_char = SC_CURSOR_CHAR; 185 sc->mouse_char = SC_MOUSE_CHAR; 186 } 187 return (sc); 188 } 189 190 sc_softc_t 191 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 192 { 193 sc_softc_t *sc; 194 int i; 195 int units; 196 197 sc = &main_softc; 198 if ((adp == NULL || adp == sc->adp) && 199 (kbd == NULL || kbd == sc->kbd)) 200 return (sc); 201 units = devclass_get_maxunit(sc_devclass); 202 for (i = 0; i < units; ++i) { 203 sc = device_get_softc(devclass_get_device(sc_devclass, i)); 204 if (sc == NULL) 205 continue; 206 if ((adp == NULL || adp == sc->adp) && 207 (kbd == NULL || kbd == sc->kbd)) 208 return (sc); 209 } 210 return (NULL); 211 } 212 213 int 214 sc_get_cons_priority(int *unit, int *flags) 215 { 216 const char *at; 217 int f, u; 218 219 #ifdef XBOX 220 /* 221 * The XBox Loader does not support hints, which makes our initial 222 * console probe fail. Therefore, if an XBox is found, we hardcode the 223 * existence of the console, as it is always there anyway. 224 */ 225 if (arch_i386_is_xbox) { 226 *unit = 0; 227 *flags = SC_KERNEL_CONSOLE; 228 return (CN_INTERNAL); 229 } 230 #endif 231 232 *unit = -1; 233 for (u = 0; u < 16; u++) { 234 if (resource_disabled(SC_DRIVER_NAME, u)) 235 continue; 236 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 237 continue; 238 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 239 f = 0; 240 if (f & SC_KERNEL_CONSOLE) { 241 /* the user designates this unit to be the console */ 242 *unit = u; 243 *flags = f; 244 break; 245 } 246 if (*unit < 0) { 247 /* ...otherwise remember the first found unit */ 248 *unit = u; 249 *flags = f; 250 } 251 } 252 if (*unit < 0) { 253 *unit = 0; 254 *flags = 0; 255 } 256 #if 0 257 return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL); 258 #endif 259 return (CN_INTERNAL); 260 } 261 262 void 263 sc_get_bios_values(bios_values_t *values) 264 { 265 #if defined(__i386__) || defined(__amd64__) 266 uint8_t shift; 267 268 values->cursor_start = *(uint8_t *)BIOS_PADDRTOVADDR(0x461); 269 values->cursor_end = *(uint8_t *)BIOS_PADDRTOVADDR(0x460); 270 shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417); 271 values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) | 272 ((shift & BIOS_NLKED) != 0 ? NLKED : 0) | 273 ((shift & BIOS_SLKED) != 0 ? SLKED : 0) | 274 ((shift & BIOS_ALKED) != 0 ? ALKED : 0); 275 #else 276 values->cursor_start = 0; 277 values->cursor_end = 32; 278 values->shift_state = 0; 279 #endif 280 values->bell_pitch = BELL_PITCH; 281 } 282 283 int 284 sc_tone(int herz) 285 { 286 287 #if defined(HAS_TIMER_SPKR) 288 if (herz) { 289 if (timer_spkr_acquire()) 290 return (EBUSY); 291 timer_spkr_setfreq(herz); 292 } else 293 timer_spkr_release(); 294 #endif 295 296 return (0); 297 } 298 299 static device_method_t sc_methods[] = { 300 DEVMETHOD(device_identify, scidentify), 301 DEVMETHOD(device_probe, scprobe), 302 DEVMETHOD(device_attach, scattach), 303 DEVMETHOD(device_suspend, scsuspend), 304 DEVMETHOD(device_resume, scresume), 305 { 0, 0 } 306 }; 307 308 static driver_t sc_driver = { 309 SC_DRIVER_NAME, 310 sc_methods, 311 sizeof(sc_softc_t), 312 }; 313 314 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 315 316 static devclass_t scpm_devclass; 317 318 static void 319 scpm_identify(driver_t *driver, device_t parent) 320 { 321 322 device_add_child(parent, "scpm", 0); 323 } 324 325 static int 326 scpm_probe(device_t dev) 327 { 328 329 device_set_desc(dev, SC_DRIVER_NAME " suspend/resume"); 330 device_quiet(dev); 331 332 return (BUS_PROBE_DEFAULT); 333 } 334 335 static int 336 scpm_attach(device_t dev) 337 { 338 339 bus_generic_probe(dev); 340 bus_generic_attach(dev); 341 342 return (0); 343 } 344 345 static int 346 scpm_suspend(device_t dev) 347 { 348 int error; 349 350 error = bus_generic_suspend(dev); 351 if (error != 0) 352 return (error); 353 354 return (scsuspend(dev)); 355 } 356 357 static int 358 scpm_resume(device_t dev) 359 { 360 361 scresume(dev); 362 363 return (bus_generic_resume(dev)); 364 } 365 366 static device_method_t scpm_methods[] = { 367 DEVMETHOD(device_identify, scpm_identify), 368 DEVMETHOD(device_probe, scpm_probe), 369 DEVMETHOD(device_attach, scpm_attach), 370 DEVMETHOD(device_suspend, scpm_suspend), 371 DEVMETHOD(device_resume, scpm_resume), 372 { 0, 0 } 373 }; 374 375 static driver_t scpm_driver = { 376 "scpm", 377 scpm_methods, 378 0 379 }; 380 381 DRIVER_MODULE(scpm, vgapm, scpm_driver, scpm_devclass, 0, 0); 382