syscons_isa.c revision 61704
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: head/sys/isa/syscons_isa.c 61704 2000-06-15 10:01:12Z peter $ 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 63static devclass_t sc_devclass; 64 65static int scprobe(device_t dev); 66static int scattach(device_t dev); 67static int scresume(device_t dev); 68 69static device_method_t sc_methods[] = { 70 DEVMETHOD(device_probe, scprobe), 71 DEVMETHOD(device_attach, scattach), 72 DEVMETHOD(device_resume, scresume), 73 { 0, 0 } 74}; 75 76static driver_t sc_driver = { 77 SC_DRIVER_NAME, 78 sc_methods, 79 sizeof(sc_softc_t), 80}; 81 82static sc_softc_t main_softc; 83 84static int 85scprobe(device_t dev) 86{ 87 /* No pnp support */ 88 if (isa_get_vendorid(dev)) 89 return (ENXIO); 90 91 device_set_desc(dev, "System console"); 92 return sc_probe_unit(device_get_unit(dev), device_get_flags(dev)); 93} 94 95static int 96scattach(device_t dev) 97{ 98 return sc_attach_unit(device_get_unit(dev), device_get_flags(dev)); 99} 100 101static int 102scresume(device_t dev) 103{ 104 return sc_resume_unit(device_get_unit(dev)); 105} 106 107int 108sc_max_unit(void) 109{ 110 return devclass_get_maxunit(sc_devclass); 111} 112 113sc_softc_t 114*sc_get_softc(int unit, int flags) 115{ 116 sc_softc_t *sc; 117 118 if (unit < 0) 119 return NULL; 120 if (flags & SC_KERNEL_CONSOLE) { 121 /* FIXME: clear if it is wired to another unit! */ 122 sc = &main_softc; 123 } else { 124 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, unit)); 125 if (sc == NULL) 126 return NULL; 127 } 128 sc->unit = unit; 129 if (!(sc->flags & SC_INIT_DONE)) { 130 sc->keyboard = -1; 131 sc->adapter = -1; 132 sc->cursor_char = SC_CURSOR_CHAR; 133 sc->mouse_char = SC_MOUSE_CHAR; 134 } 135 return sc; 136} 137 138sc_softc_t 139*sc_find_softc(struct video_adapter *adp, struct keyboard *kbd) 140{ 141 sc_softc_t *sc; 142 int units; 143 int i; 144 145 sc = &main_softc; 146 if (((adp == NULL) || (adp == sc->adp)) 147 && ((kbd == NULL) || (kbd == sc->kbd))) 148 return sc; 149 units = devclass_get_maxunit(sc_devclass); 150 for (i = 0; i < units; ++i) { 151 sc = (sc_softc_t *)device_get_softc(devclass_get_device(sc_devclass, i)); 152 if (sc == NULL) 153 continue; 154 if (((adp == NULL) || (adp == sc->adp)) 155 && ((kbd == NULL) || (kbd == sc->kbd))) 156 return sc; 157 } 158 return NULL; 159} 160 161int 162sc_get_cons_priority(int *unit, int *flags) 163{ 164 int disabled; 165 char *at; 166 int u, f; 167 168 *unit = -1; 169 for (u = 0; u < 16; u++) { 170 if ((resource_int_value(SC_DRIVER_NAME, u, "disabled", 171 &disabled) == 0) && disabled) 172 continue; 173 if (resource_string_value(SC_DRIVER_NAME, u, "at", &at) != 0) 174 continue; 175 if (resource_int_value(SC_DRIVER_NAME, u, "flags", &f) != 0) 176 f = 0; 177 if (f & SC_KERNEL_CONSOLE) { 178 /* the user designates this unit to be the console */ 179 *unit = u; 180 *flags = f; 181 break; 182 } 183 if (*unit < 0) { 184 /* ...otherwise remember the first found unit */ 185 *unit = u; 186 *flags = f; 187 } 188 } 189 if (*unit < 0) 190 return CN_DEAD; 191#if 0 192 return ((*flags & SC_KERNEL_CONSOLE) ? CN_INTERNAL : CN_NORMAL); 193#endif 194 return CN_INTERNAL; 195} 196 197void 198sc_get_bios_values(bios_values_t *values) 199{ 200#ifdef __i386__ 201 u_int8_t shift; 202 203 values->cursor_start = *(u_int8_t *)BIOS_PADDRTOVADDR(0x461); 204 values->cursor_end = *(u_int8_t *)BIOS_PADDRTOVADDR(0x460); 205 shift = *(u_int8_t *)BIOS_PADDRTOVADDR(0x417); 206 values->shift_state = ((shift & BIOS_CLKED) ? CLKED : 0) 207 | ((shift & BIOS_NLKED) ? NLKED : 0) 208 | ((shift & BIOS_SLKED) ? SLKED : 0) 209 | ((shift & BIOS_ALKED) ? ALKED : 0); 210 values->bell_pitch = BELL_PITCH; 211#else /* !__i386__ */ 212 values->cursor_start = 0; 213 values->cursor_end = 32; 214 values->shift_state = 0; 215 values->bell_pitch = BELL_PITCH; 216#endif /* __i386__ */ 217} 218 219int 220sc_tone(int herz) 221{ 222#ifdef __i386__ 223 int pitch; 224 225 if (herz) { 226 /* set command for counter 2, 2 byte write */ 227 if (acquire_timer2(TIMER_16BIT | TIMER_SQWAVE)) 228 return EBUSY; 229 /* set pitch */ 230 pitch = timer_freq/herz; 231 outb(TIMER_CNTR2, pitch); 232 outb(TIMER_CNTR2, pitch >> 8); 233 /* enable counter 2 output to speaker */ 234 outb(IO_PPI, inb(IO_PPI) | 3); 235 } else { 236 /* disable counter 2 output to speaker */ 237 outb(IO_PPI, inb(IO_PPI) & 0xFC); 238 release_timer2(); 239 } 240#endif /* __i386__ */ 241 242 return 0; 243} 244 245DRIVER_MODULE(sc, isa, sc_driver, sc_devclass, 0, 0); 246