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 sc->suspend_in_progress--; 145 if (sc->suspend_in_progress == 0) 146 if (!sc_no_suspend_vtswitch && sc_cur_scr != 0) 147 sc_switch_scr(sc, sc_cur_scr); 148 149 return (0); 150 } 151 152 int 153 sc_max_unit(void) 154 { 155 156 return (devclass_get_maxunit(sc_devclass)); 157 } 158 159 sc_softc_t 160 *sc_get_softc(int unit, int flags) 161 { 162 sc_softc_t *sc; 163 164 if (unit < 0) 165 return (NULL); 166 if ((flags & SC_KERNEL_CONSOLE) != 0) { 167 /* FIXME: clear if it is wired to another unit! */ 168 sc = &main_softc; 169 } else { 170 sc = device_get_softc(devclass_get_device(sc_devclass, unit)); 171 if (sc == NULL) 172 return (NULL); 173 } 174 sc->unit = unit; 175 if ((sc->flags & SC_INIT_DONE) == 0) { 176 sc->keyboard = -1; 177 sc->adapter = -1; 178 sc->cursor_char = SC_CURSOR_CHAR; 179 sc->mouse_char = SC_MOUSE_CHAR; 180 } 181 return (sc); 182 } 183 184 sc_softc_t 185 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 186 { 187 sc_softc_t *sc; 188 int i; 189 int units; 190 191 sc = &main_softc; 192 if ((adp == NULL || adp == sc->adp) && 193 (kbd == NULL || kbd == sc->kbd)) 194 return (sc); 195 units = devclass_get_maxunit(sc_devclass); 196 for (i = 0; i < units; ++i) { 197 sc = device_get_softc(devclass_get_device(sc_devclass, i)); 198 if (sc == NULL) 199 continue; 200 if ((adp == NULL || adp == sc->adp) && 201 (kbd == NULL || kbd == sc->kbd)) 202 return (sc); 203 } 204 return (NULL); 205 } 206 207 int 208 sc_get_cons_priority(int *unit, int *flags) 209 { 210 const char *at; 211 int f, u; 212 213 #ifdef XBOX 214 /* 215 * The XBox Loader does not support hints, which makes our initial 216 * console probe fail. Therefore, if an XBox is found, we hardcode the 217 * existence of the console, as it is always there anyway. 218 */ 219 if (arch_i386_is_xbox) { 220 *unit = 0; 221 *flags = SC_KERNEL_CONSOLE; 222 return (CN_INTERNAL); 223 } 224 #endif 225 226 *unit = -1; 227 for (u = 0; u < 16; u++) { 228 if (resource_disabled(SC_DRIVER_NAME, u)) 229 continue; 230 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 231 continue; 232 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 233 f = 0; 234 if (f & SC_KERNEL_CONSOLE) { 235 /* the user designates this unit to be the console */ 236 *unit = u; 237 *flags = f; 238 break; 239 } 240 if (*unit < 0) { 241 /* ...otherwise remember the first found unit */ 242 *unit = u; 243 *flags = f; 244 } 245 } 246 if (*unit < 0) { 247 *unit = 0; 248 *flags = 0; 249 } 250 #if 0 251 return ((*flags & SC_KERNEL_CONSOLE) != 0 ? CN_INTERNAL : CN_NORMAL); 252 #endif 253 return (CN_INTERNAL); 254 } 255 256 void 257 sc_get_bios_values(bios_values_t *values) 258 { 259 #if defined(__i386__) || defined(__amd64__) 260 uint8_t shift; 261 262 values->cursor_start = *(uint8_t *)BIOS_PADDRTOVADDR(0x461); 263 values->cursor_end = *(uint8_t *)BIOS_PADDRTOVADDR(0x460); 264 shift = *(uint8_t *)BIOS_PADDRTOVADDR(0x417); 265 values->shift_state = ((shift & BIOS_CLKED) != 0 ? CLKED : 0) | 266 ((shift & BIOS_NLKED) != 0 ? NLKED : 0) | 267 ((shift & BIOS_SLKED) != 0 ? SLKED : 0) | 268 ((shift & BIOS_ALKED) != 0 ? ALKED : 0); 269 #else 270 values->cursor_start = 0; 271 values->cursor_end = 32; 272 values->shift_state = 0; 273 #endif 274 values->bell_pitch = BELL_PITCH; 275 } 276 277 int 278 sc_tone(int herz) 279 { 280 281 #if defined(HAS_TIMER_SPKR) 282 if (herz) { 283 if (timer_spkr_acquire()) 284 return (EBUSY); 285 timer_spkr_setfreq(herz); 286 } else 287 timer_spkr_release(); 288 #endif 289 290 return (0); 291 } 292 293 static device_method_t sc_methods[] = { 294 DEVMETHOD(device_identify, scidentify), 295 DEVMETHOD(device_probe, scprobe), 296 DEVMETHOD(device_attach, scattach), 297 DEVMETHOD(device_suspend, scsuspend), 298 DEVMETHOD(device_resume, scresume), 299 { 0, 0 } 300 }; 301 302 static driver_t sc_driver = { 303 SC_DRIVER_NAME, 304 sc_methods, 305 sizeof(sc_softc_t), 306 }; 307 308 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 309 310 static devclass_t scpm_devclass; 311 312 static void 313 scpm_identify(driver_t *driver, device_t parent) 314 { 315 316 device_add_child(parent, "scpm", 0); 317 } 318 319 static int 320 scpm_probe(device_t dev) 321 { 322 323 device_set_desc(dev, SC_DRIVER_NAME " suspend/resume"); 324 device_quiet(dev); 325 326 return (BUS_PROBE_DEFAULT); 327 } 328 329 static int 330 scpm_attach(device_t dev) 331 { 332 333 bus_generic_probe(dev); 334 bus_generic_attach(dev); 335 336 return (0); 337 } 338 339 static int 340 scpm_suspend(device_t dev) 341 { 342 int error; 343 344 error = bus_generic_suspend(dev); 345 if (error != 0) 346 return (error); 347 348 return (scsuspend(dev)); 349 } 350 351 static int 352 scpm_resume(device_t dev) 353 { 354 355 scresume(dev); 356 357 return (bus_generic_resume(dev)); 358 } 359 360 static device_method_t scpm_methods[] = { 361 DEVMETHOD(device_identify, scpm_identify), 362 DEVMETHOD(device_probe, scpm_probe), 363 DEVMETHOD(device_attach, scpm_attach), 364 DEVMETHOD(device_suspend, scpm_suspend), 365 DEVMETHOD(device_resume, scpm_resume), 366 { 0, 0 } 367 }; 368 369 static driver_t scpm_driver = { 370 "scpm", 371 scpm_methods, 372 0 373 }; 374 375 DRIVER_MODULE(scpm, vgapm, scpm_driver, scpm_devclass, 0, 0); 376