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 #ifdef __i386__ 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 51 #include <i386/isa/timerreg.h> 52 53 #define BIOS_CLKED (1 << 6) 54 #define BIOS_NLKED (1 << 5) 55 #define BIOS_SLKED (1 << 4) 56 #define BIOS_ALKED 0 57 58 #endif /* __i386__ */ 59 60 #include <dev/syscons/syscons.h> 61 62 #include <isa/isareg.h> 63 #include <isa/isavar.h> 64 65 static devclass_t sc_devclass; 66 67 static sc_softc_t main_softc; 68 #ifdef SC_NO_SUSPEND_VTYSWITCH 69 static int sc_no_suspend_vtswitch = 1; 70 #else 71 static int sc_no_suspend_vtswitch = 0; 72 #endif 73 static int sc_cur_scr; 74 75 TUNABLE_INT("hw.syscons.sc_no_suspend_vtswitch", (int *)&sc_no_suspend_vtswitch); 76 SYSCTL_DECL(_hw_syscons); 77 SYSCTL_INT(_hw_syscons, OID_AUTO, sc_no_suspend_vtswitch, CTLFLAG_RW, 78 &sc_no_suspend_vtswitch, 0, "Disable VT switch before suspend."); 79 80 static void 81 scidentify (driver_t *driver, device_t parent) 82 { 83 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 84 } 85 86 static int 87 scprobe(device_t dev) 88 { 89 /* No pnp support */ 90 if (isa_get_vendorid(dev)) 91 return (ENXIO); 92 93 device_set_desc(dev, "System console"); 94 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev)); 95 } 96 97 static int 98 scattach(device_t dev) 99 { 100 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev)); 101 } 102 103 static int 104 scsuspend(device_t dev) 105 { 106 int retry = 10; 107 static int dummy; 108 sc_softc_t *sc; 109 110 sc = &main_softc; 111 sc_cur_scr = sc->cur_scp->index; 112 113 if (sc_no_suspend_vtswitch) 114 return (0); 115 116 do { 117 sc_switch_scr(sc, 0); 118 if (!sc->switch_in_progress) { 119 break; 120 } 121 tsleep(&dummy, 0, "scsuspend", 100); 122 } while (retry--); 123 124 return (0); 125 } 126 127 static int 128 scresume(device_t dev) 129 { 130 sc_softc_t *sc; 131 132 if (sc_no_suspend_vtswitch) 133 return (0); 134 135 sc = &main_softc; 136 sc_switch_scr(sc, sc_cur_scr); 137 138 return (0); 139 } 140 141 int 142 sc_max_unit(void) 143 { 144 return devclass_get_maxunit(sc_devclass); 145 } 146 147 sc_softc_t 148 *sc_get_softc(int unit, int flags) 149 { 150 sc_softc_t *sc; 151 152 if (unit < 0) 153 return NULL; 154 if (flags & SC_KERNEL_CONSOLE) { 155 /* FIXME: clear if it is wired to another unit! */ 156 sc = &main_softc; 157 } else { 158 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit)); 159 if (sc == NULL) 160 return NULL; 161 } 162 sc->unit = unit; 163 if (!(sc->flags & SC_INIT_DONE)) { 164 sc->keyboard = -1; 165 sc->adapter = -1; 166 sc->cursor_char = SC_CURSOR_CHAR; 167 sc->mouse_char = SC_MOUSE_CHAR; 168 } 169 return sc; 170 } 171 172 sc_softc_t 173 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 174 { 175 sc_softc_t *sc; 176 int units; 177 int i; 178 179 sc = &main_softc; 180 if (((adp == NULL) || (adp == sc->adp)) 181 && ((kbd == NULL) || (kbd == sc->kbd))) 182 return sc; 183 units = devclass_get_maxunit(sc_devclass); 184 for (i = 0; i < units; ++i) { 185 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i)); 186 if (sc == NULL) 187 continue; 188 if (((adp == NULL) || (adp == sc->adp)) 189 && ((kbd == NULL) || (kbd == sc->kbd))) 190 return sc; 191 } 192 return NULL; 193 } 194 195 int 196 sc_get_cons_priority(int *unit, int *flags) 197 { 198 int disabled; 199 const char *at; 200 int u, f; 201 202 *unit = -1; 203 for (u = 0; u < 16; u++) { 204 if ((resource_int_value(SC_DRIVER_NAME, u, "disabled", 205 &disabled) == 0) && disabled) 206 continue; 207 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 208 continue; 209 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 210 f = 0; 211 if (f & SC_KERNEL_CONSOLE) { 212 /* the user designates this unit to be the console */ 213 *unit = u; 214 *flags = f; 215 break; 216 } 217 if (*unit < 0) { 218 /* ...otherwise remember the first found unit */ 219 *unit = u; 220 *flags = f; 221 } 222 } 223 if (*unit < 0) 224 return CN_DEAD; 225 #if 0 226 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL); 227 #endif 228 return CN_INTERNAL; 229 } 230 231 void 232 sc_get_bios_values(bios_values_t *values) 233 { 234 #ifdef __i386__ 235 u_int8_t shift; 236 237 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461); 238 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460); 239 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417); 240 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0) 241 | ((shift & BIOS_NLKED) ? NLKED : 0) 242 | ((shift & BIOS_SLKED) ? SLKED : 0) 243 | ((shift & BIOS_ALKED) ? ALKED : 0); 244 values->bell_pitch = BELL_PITCH; 245 #else /* !__i386__ */ 246 values->cursor_start = 0; 247 values->cursor_end = 32; 248 values->shift_state = 0; 249 values->bell_pitch = BELL_PITCH; 250 #endif /* __i386__ */ 251 } 252 253 int 254 sc_tone(int herz) 255 { 256 #ifdef __i386__ 257 int pitch; 258 259 if (herz) { 260 /* set command for counter 2, 2 byte write */ 261 if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE)) 262 return EBUSY; 263 /* set pitch */ 264 pitch = timer_freq/herz; 265 outb(TIMER_CNTR2, pitch); 266 outb(TIMER_CNTR2, pitch >> 8); 267 /* enable counter 2 output to speaker */ 268 outb(IO_PPI, inb(IO_PPI) | 3); 269 } else { 270 /* disable counter 2 output to speaker */ 271 outb(IO_PPI, inb(IO_PPI) & 0xFC); 272 release_timer2(); 273 } 274 #endif /* __i386__ */ 275 276 return 0; 277 } 278 279 static device_method_t sc_methods[] = { 280 DEVMETHOD(device_identify, scidentify), 281 DEVMETHOD(device_probe, scprobe), 282 DEVMETHOD(device_attach, scattach), 283 DEVMETHOD(device_suspend, scsuspend), 284 DEVMETHOD(device_resume, scresume), 285 { 0, 0 } 286 }; 287 288 static driver_t sc_driver = { 289 SC_DRIVER_NAME, 290 sc_methods, 291 sizeof(sc_softc_t), 292 }; 293 294 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 295