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 #include <sys/kbio.h> 38 #include <sys/consio.h> 39 40 41 #ifdef __i386__ 42 43 #include <machine/clock.h> 44 #include <machine/md_var.h> 45 #include <machine/pc/bios.h> 46 47 #include <vm/vm.h> 48 #include <vm/pmap.h> 49 50 #include <i386/isa/timerreg.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 /* __i386__ */ 58 59 #include <dev/syscons/syscons.h> 60 61 #include <isa/isareg.h> 62 #include <isa/isavar.h> 63 64 static devclass_t sc_devclass; 65 66 static sc_softc_t main_softc; 67 68 static void 69 scidentify (driver_t *driver, device_t parent) 70 { 71 BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "sc", 0); 72 } 73 74 static int 75 scprobe(device_t dev) 76 { 77 /* No pnp support */ 78 if (isa_get_vendorid(dev)) 79 return (ENXIO); 80 81 device_set_desc(dev, "System console"); 82 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev)); 83 } 84 85 static int 86 scattach(device_t dev) 87 { 88 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev)); 89 } 90 91 static int 92 scresume(device_t dev) 93 { 94 return sc_resume_unit(device_get_unit(dev)); 95 } 96 97 int 98 sc_max_unit(void) 99 { 100 return devclass_get_maxunit(sc_devclass); 101 } 102 103 sc_softc_t 104 *sc_get_softc(int unit, int flags) 105 { 106 sc_softc_t *sc; 107 108 if (unit < 0) 109 return NULL; 110 if (flags & SC_KERNEL_CONSOLE) { 111 /* FIXME: clear if it is wired to another unit! */ 112 sc = &main_softc; 113 } else { 114 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit)); 115 if (sc == NULL) 116 return NULL; 117 } 118 sc->unit = unit; 119 if (!(sc->flags & SC_INIT_DONE)) { 120 sc->keyboard = -1; 121 sc->adapter = -1; 122 sc->cursor_char = SC_CURSOR_CHAR; 123 sc->mouse_char = SC_MOUSE_CHAR; 124 } 125 return sc; 126 } 127 128 sc_softc_t 129 *sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 130 { 131 sc_softc_t *sc; 132 int units; 133 int i; 134 135 sc = &main_softc; 136 if (((adp == NULL) || (adp == sc->adp)) 137 && ((kbd == NULL) || (kbd == sc->kbd))) 138 return sc; 139 units = devclass_get_maxunit(sc_devclass); 140 for (i = 0; i < units; ++i) { 141 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i)); 142 if (sc == NULL) 143 continue; 144 if (((adp == NULL) || (adp == sc->adp)) 145 && ((kbd == NULL) || (kbd == sc->kbd))) 146 return sc; 147 } 148 return NULL; 149 } 150 151 int 152 sc_get_cons_priority(int *unit, int *flags) 153 { 154 int disabled; 155 char *at; 156 int u, f; 157 158 *unit = -1; 159 for (u = 0; u < 16; u++) { 160 if ((resource_int_value(SC_DRIVER_NAME, u, "disabled", 161 &disabled) == 0) && disabled) 162 continue; 163 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 164 continue; 165 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 166 f = 0; 167 if (f & SC_KERNEL_CONSOLE) { 168 /* the user designates this unit to be the console */ 169 *unit = u; 170 *flags = f; 171 break; 172 } 173 if (*unit < 0) { 174 /* ...otherwise remember the first found unit */ 175 *unit = u; 176 *flags = f; 177 } 178 } 179 if (*unit < 0) 180 return CN_DEAD; 181 #if 0 182 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL); 183 #endif 184 return CN_INTERNAL; 185 } 186 187 void 188 sc_get_bios_values(bios_values_t *values) 189 { 190 #ifdef __i386__ 191 u_int8_t shift; 192 193 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461); 194 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460); 195 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417); 196 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0) 197 | ((shift & BIOS_NLKED) ? NLKED : 0) 198 | ((shift & BIOS_SLKED) ? SLKED : 0) 199 | ((shift & BIOS_ALKED) ? ALKED : 0); 200 values->bell_pitch = BELL_PITCH; 201 #else /* !__i386__ */ 202 values->cursor_start = 0; 203 values->cursor_end = 32; 204 values->shift_state = 0; 205 values->bell_pitch = BELL_PITCH; 206 #endif /* __i386__ */ 207 } 208 209 int 210 sc_tone(int herz) 211 { 212 #ifdef __i386__ 213 int pitch; 214 215 if (herz) { 216 /* set command for counter 2, 2 byte write */ 217 if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE)) 218 return EBUSY; 219 /* set pitch */ 220 pitch = timer_freq/herz; 221 outb(TIMER_CNTR2, pitch); 222 outb(TIMER_CNTR2, pitch >> 8); 223 /* enable counter 2 output to speaker */ 224 outb(IO_PPI, inb(IO_PPI) | 3); 225 } else { 226 /* disable counter 2 output to speaker */ 227 outb(IO_PPI, inb(IO_PPI) & 0xFC); 228 release_timer2(); 229 } 230 #endif /* __i386__ */ 231 232 return 0; 233 } 234 235 static device_method_t sc_methods[] = { 236 DEVMETHOD(device_identify, scidentify), 237 DEVMETHOD(device_probe, scprobe), 238 DEVMETHOD(device_attach, scattach), 239 DEVMETHOD(device_resume, scresume), 240 { 0, 0 } 241 }; 242 243 static driver_t sc_driver = { 244 SC_DRIVER_NAME, 245 sc_methods, 246 sizeof(sc_softc_t), 247 }; 248 249 DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 250