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 * $FreeBSD$ 27 */ 28 29 #include "opt_syscons.h" 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 #include <sys/bus.h> 36 #include <sys/cons.h> 37 38 #include <machine/console.h> 39 40 #ifdef __i386__ 41 42 #include <machine/clock.h> 43 #include <machine/md_var.h> 44 #include <machine/pc/bios.h> 45 46 #include <vm/vm.h> 47 #include <vm/pmap.h> 48 49 #include <i386/isa/timerreg.h> 50 51 #define BIOS_CLKED (1 << 6) 52 #define BIOS_NLKED (1 << 5) 53 #define BIOS_SLKED (1 << 4) 54 #define BIOS_ALKED 0 55 56 #endif /* __i386__ */ 57 58 #include <dev/syscons/syscons.h> 59 60 #include <isa/isareg.h> 61 #include <isa/isavar.h> 62 63 static devclass_t sc_devclass; 64 65 static sc_softc_t main_softc; 66 67 static void 68 scidentify (driver_t *driver, device_t parent) 69 { 70 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 71 } 72 73 static int 74 scprobe(device_t dev) 75 { 76 /* No pnp support */ 77 if (isa_get_vendorid(dev)) 78 return (ENXIO); 79 80 device_set_desc(dev, "System console"); 81 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev)); 82 } 83 84 static int 85 scattach(device_t dev) 86 { 87 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev)); 88 } 89 90 static int 91 scresume(device_t dev) 92 { 93 return sc_resume_unit(device_get_unit(dev)); 94 } 95 96 int 97 sc_max_unit(void) 98 { 99 return devclass_get_maxunit(sc_devclass); 100 } 101 102 sc_softc_t 103 *sc_get_softc(int unit, int flags) 104 { 105 sc_softc_t *sc; 106 107 if (unit < 0) 108 return NULL; 109 if (flags & SC_KERNEL_CONSOLE) { 110 /* FIXME: clear if it is wired to another unit! */ 111 sc = &main_softc; 112 } else { 113 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit)); 114 if (sc == NULL) 115 return NULL; 116 } 117 sc->unit = unit; 118 if (!(sc->flags & SC_INIT_DONE)) { 119 sc->keyboard = -1; 120 sc->adapter = -1; 121 sc->cursor_char = SC_CURSOR_CHAR; 122 sc->mouse_char = SC_MOUSE_CHAR; 123 } 124 return sc; 125 } 126 127 sc_softc_t 128 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 129 { 130 sc_softc_t *sc; 131 int units; 132 int i; 133 134 sc = &main_softc; 135 if (((adp == NULL) || (adp == sc->adp)) 136 && ((kbd == NULL) || (kbd == sc->kbd))) 137 return sc; 138 units = devclass_get_maxunit(sc_devclass); 139 for (i = 0; i < units; ++i) { 140 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i)); 141 if (sc == NULL) 142 continue; 143 if (((adp == NULL) || (adp == sc->adp)) 144 && ((kbd == NULL) || (kbd == sc->kbd))) 145 return sc; 146 } 147 return NULL; 148 } 149 150 int 151 sc_get_cons_priority(int *unit, int *flags) 152 { 153 int disabled; 154 char *at; 155 int u, f; 156 157 *unit = -1; 158 for (u = 0; u < 16; u++) { 159 if ((resource_int_value(SC_DRIVER_NAME, u, "disabled", 160 &disabled) == 0) && disabled) 161 continue; 162 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 163 continue; 164 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 165 f = 0; 166 if (f & SC_KERNEL_CONSOLE) { 167 /* the user designates this unit to be the console */ 168 *unit = u; 169 *flags = f; 170 break; 171 } 172 if (*unit < 0) { 173 /* ...otherwise remember the first found unit */ 174 *unit = u; 175 *flags = f; 176 } 177 } 178 if (*unit < 0) 179 return CN_DEAD; 180 #if 0 181 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL); 182 #endif 183 return CN_INTERNAL; 184 } 185 186 void 187 sc_get_bios_values(bios_values_t *values) 188 { 189 #ifdef __i386__ 190 u_int8_t shift; 191 192 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461); 193 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460); 194 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417); 195 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0) 196 | ((shift & BIOS_NLKED) ? NLKED : 0) 197 | ((shift & BIOS_SLKED) ? SLKED : 0) 198 | ((shift & BIOS_ALKED) ? ALKED : 0); 199 values->bell_pitch = BELL_PITCH; 200 #else /* !__i386__ */ 201 values->cursor_start = 0; 202 values->cursor_end = 32; 203 values->shift_state = 0; 204 values->bell_pitch = BELL_PITCH; 205 #endif /* __i386__ */ 206 } 207 208 int 209 sc_tone(int herz) 210 { 211 #ifdef __i386__ 212 int pitch; 213 214 if (herz) { 215 /* set command for counter 2, 2 byte write */ 216 if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE)) 217 return EBUSY; 218 /* set pitch */ 219 pitch = timer_freq/herz; 220 outb(TIMER_CNTR2, pitch); 221 outb(TIMER_CNTR2, pitch >> 8); 222 /* enable counter 2 output to speaker */ 223 outb(IO_PPI, inb(IO_PPI) | 3); 224 } else { 225 /* disable counter 2 output to speaker */ 226 outb(IO_PPI, inb(IO_PPI) & 0xFC); 227 release_timer2(); 228 } 229 #endif /* __i386__ */ 230 231 return 0; 232 } 233 234 static device_method_t sc_methods[] = { 235 DEVMETHOD(device_identify, scidentify), 236 DEVMETHOD(device_probe, scprobe), 237 DEVMETHOD(device_attach, scattach), 238 DEVMETHOD(device_resume, scresume), 239 { 0, 0 } 240 }; 241 242 static driver_t sc_driver = { 243 SC_DRIVER_NAME, 244 sc_methods, 245 sizeof(sc_softc_t), 246 }; 247 248 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 249