acpi_apm.c revision 120156
1/*- 2 * Copyright (c) 2001 Mitsuru IWASAKI 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. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/i386/acpica/acpi_machdep.c 120156 2003-09-17 08:47:39Z iwasaki $"); 29 30#include <sys/param.h> 31#include <sys/bus.h> 32#include <sys/conf.h> 33#include <sys/fcntl.h> 34#include <sys/uio.h> 35 36#include "acpi.h" 37 38#include <dev/acpica/acpivar.h> 39#include <dev/acpica/acpiio.h> 40 41static device_t acpi_dev; 42 43/* 44 * APM driver emulation 45 */ 46 47#if __FreeBSD_version < 500000 48#include <sys/select.h> 49#else 50#include <sys/selinfo.h> 51#endif 52 53#include <machine/apm_bios.h> 54#include <machine/pc/bios.h> 55 56#if __FreeBSD_version < 500000 57#include <i386/apm/apm.h> 58#else 59#include <i386/bios/apm.h> 60#endif 61 62static struct apm_softc apm_softc; 63 64static d_open_t apmopen; 65static d_close_t apmclose; 66static d_write_t apmwrite; 67static d_ioctl_t apmioctl; 68static d_poll_t apmpoll; 69 70#define CDEV_MAJOR 39 71static struct cdevsw apm_cdevsw = { 72 .d_open = apmopen, 73 .d_close = apmclose, 74 .d_write = apmwrite, 75 .d_ioctl = apmioctl, 76 .d_poll = apmpoll, 77 .d_name = "apm", 78 .d_maj = CDEV_MAJOR, 79}; 80 81static int intr_model = ACPI_INTR_PIC; 82 83static int 84acpi_capm_convert_battstate(struct acpi_battinfo *battp) 85{ 86 int state; 87 88 state = 0xff; /* XXX unknown */ 89 90 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 91 if (battp->cap >= 50) 92 state = 0; /* high */ 93 else 94 state = 1; /* low */ 95 } 96 if (battp->state & ACPI_BATT_STAT_CRITICAL) 97 state = 2; /* critical */ 98 if (battp->state & ACPI_BATT_STAT_CHARGING) 99 state = 3; /* charging */ 100 101 /* If still unknown, determine it based on the battery capacity. */ 102 if (state == 0xff) { 103 if (battp->cap >= 50) { 104 state = 0; /* high */ 105 } else { 106 state = 1; /* low */ 107 } 108 } 109 110 return (state); 111} 112 113static int 114acpi_capm_convert_battflags(struct acpi_battinfo *battp) 115{ 116 int flags; 117 118 flags = 0; 119 120 if (battp->cap >= 50) { 121 flags |= APM_BATT_HIGH; 122 } else { 123 if (battp->state & ACPI_BATT_STAT_CRITICAL) 124 flags |= APM_BATT_CRITICAL; 125 else 126 flags |= APM_BATT_LOW; 127 } 128 if (battp->state & ACPI_BATT_STAT_CHARGING) 129 flags |= APM_BATT_CHARGING; 130 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 131 flags = APM_BATT_NOT_PRESENT; 132 133 return (flags); 134} 135 136static int 137acpi_capm_get_info(apm_info_t aip) 138{ 139 int acline; 140 struct acpi_battinfo batt; 141 142 aip->ai_infoversion = 1; 143 aip->ai_major = 1; 144 aip->ai_minor = 2; 145 aip->ai_status = apm_softc.active; 146 aip->ai_capabilities= 0xff00; /* XXX unknown */ 147 148 if (acpi_acad_get_acline(&acline)) 149 aip->ai_acline = 0xff; /* unknown */ 150 else 151 aip->ai_acline = acline; /* on/off */ 152 153 if (acpi_battery_get_battinfo(-1, &batt)) { 154 aip->ai_batt_stat = 0xff; /* unknown */ 155 aip->ai_batt_life = 0xff; /* unknown */ 156 aip->ai_batt_time = -1; /* unknown */ 157 aip->ai_batteries = 0; 158 } else { 159 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 160 aip->ai_batt_life = batt.cap; 161 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 162 aip->ai_batteries = acpi_battery_get_units(); 163 } 164 165 return (0); 166} 167 168static int 169acpi_capm_get_pwstatus(apm_pwstatus_t app) 170{ 171 int batt_unit; 172 int acline; 173 struct acpi_battinfo batt; 174 175 if (app->ap_device != PMDV_ALLDEV && 176 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) { 177 return (1); 178 } 179 180 if (app->ap_device == PMDV_ALLDEV) 181 batt_unit = -1; /* all units */ 182 else 183 batt_unit = app->ap_device - PMDV_BATT0; 184 185 if (acpi_battery_get_battinfo(batt_unit, &batt)) 186 return (1); 187 188 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 189 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 190 app->ap_batt_life = batt.cap; 191 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 192 193 if (acpi_acad_get_acline(&acline)) 194 app->ap_acline = 0xff; /* unknown */ 195 else 196 app->ap_acline = acline; /* on/off */ 197 198 return (0); 199} 200 201static int 202apmopen(dev_t dev, int flag, int fmt, d_thread_t *td) 203{ 204 return (0); 205} 206 207static int 208apmclose(dev_t dev, int flag, int fmt, d_thread_t *td) 209{ 210 return (0); 211} 212 213static int 214apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 215{ 216 int error = 0; 217 struct acpi_softc *acpi_sc; 218 struct apm_info info; 219 apm_info_old_t aiop; 220 221 if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) 222 return (ENXIO); 223 224 switch (cmd) { 225 case APMIO_SUSPEND: 226 if ((flag & FWRITE) == 0) 227 return (EPERM); 228 if (apm_softc.active) 229 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 230 else 231 error = EINVAL; 232 break; 233 case APMIO_STANDBY: 234 if ((flag & FWRITE) == 0) 235 return (EPERM); 236 if (apm_softc.active) 237 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 238 else 239 error = EINVAL; 240 break; 241 case APMIO_GETINFO_OLD: 242 if (acpi_capm_get_info(&info)) 243 error = ENXIO; 244 aiop = (apm_info_old_t)addr; 245 aiop->ai_major = info.ai_major; 246 aiop->ai_minor = info.ai_minor; 247 aiop->ai_acline = info.ai_acline; 248 aiop->ai_batt_stat = info.ai_batt_stat; 249 aiop->ai_batt_life = info.ai_batt_life; 250 aiop->ai_status = info.ai_status; 251 break; 252 case APMIO_GETINFO: 253 if (acpi_capm_get_info((apm_info_t)addr)) 254 error = ENXIO; 255 break; 256 case APMIO_GETPWSTATUS: 257 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 258 error = ENXIO; 259 break; 260 case APMIO_ENABLE: 261 if ((flag & FWRITE) == 0) 262 return (EPERM); 263 apm_softc.active = 1; 264 break; 265 case APMIO_DISABLE: 266 if ((flag & FWRITE) == 0) 267 return (EPERM); 268 apm_softc.active = 0; 269 break; 270 case APMIO_HALTCPU: 271 break; 272 case APMIO_NOTHALTCPU: 273 break; 274 case APMIO_DISPLAY: 275 if ((flag & FWRITE) == 0) 276 return (EPERM); 277 break; 278 case APMIO_BIOS: 279 if ((flag & FWRITE) == 0) 280 return (EPERM); 281 bzero(addr, sizeof(struct apm_bios_arg)); 282 break; 283 default: 284 error = EINVAL; 285 break; 286 } 287 288 return (error); 289} 290 291static int 292apmwrite(dev_t dev, struct uio *uio, int ioflag) 293{ 294 return (uio->uio_resid); 295} 296 297static int 298apmpoll(dev_t dev, int events, d_thread_t *td) 299{ 300 return (0); 301} 302 303static void 304acpi_capm_init(struct acpi_softc *sc) 305{ 306 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 307} 308 309int 310acpi_machdep_init(device_t dev) 311{ 312 struct acpi_softc *sc; 313 314 acpi_dev = dev; 315 if ((sc = device_get_softc(acpi_dev)) == NULL) 316 return (ENXIO); 317 318 /* 319 * XXX: Prevent the PnP BIOS code from interfering with 320 * our own scan of ISA devices. 321 */ 322 PnPBIOStable = NULL; 323 324 acpi_capm_init(sc); 325 326 acpi_install_wakeup_handler(sc); 327 328 if (intr_model != ACPI_INTR_PIC) 329 acpi_SetIntrModel(intr_model); 330 return (0); 331} 332 333void 334acpi_SetDefaultIntrModel(int model) 335{ 336 337 intr_model = model; 338} 339