acpi_apm.c revision 130585
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 130585 2004-06-16 09:47:26Z phk $"); 29 30#include <sys/param.h> 31#include <sys/bus.h> 32#include <sys/conf.h> 33#include <sys/fcntl.h> 34#include <sys/kernel.h> 35#include <sys/sysctl.h> 36#include <sys/uio.h> 37 38#include "acpi.h" 39#include <dev/acpica/acpivar.h> 40#include <dev/acpica/acpiio.h> 41 42static device_t acpi_dev; 43 44/* 45 * APM driver emulation 46 */ 47 48#include <sys/selinfo.h> 49 50#include <machine/apm_bios.h> 51#include <machine/pc/bios.h> 52 53#include <i386/bios/apm.h> 54 55uint32_t acpi_reset_video = 1; 56TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 57 58static int intr_model = ACPI_INTR_PIC; 59static struct apm_softc apm_softc; 60 61static d_open_t apmopen; 62static d_close_t apmclose; 63static d_write_t apmwrite; 64static d_ioctl_t apmioctl; 65static d_poll_t apmpoll; 66 67static struct cdevsw apm_cdevsw = { 68 .d_version = D_VERSION, 69 .d_flags = D_NEEDGIANT, 70 .d_open = apmopen, 71 .d_close = apmclose, 72 .d_write = apmwrite, 73 .d_ioctl = apmioctl, 74 .d_poll = apmpoll, 75 .d_name = "apm", 76}; 77 78static int 79acpi_capm_convert_battstate(struct acpi_battinfo *battp) 80{ 81 int state; 82 83 state = 0xff; /* XXX unknown */ 84 85 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 86 if (battp->cap >= 50) 87 state = 0; /* high */ 88 else 89 state = 1; /* low */ 90 } 91 if (battp->state & ACPI_BATT_STAT_CRITICAL) 92 state = 2; /* critical */ 93 if (battp->state & ACPI_BATT_STAT_CHARGING) 94 state = 3; /* charging */ 95 96 /* If still unknown, determine it based on the battery capacity. */ 97 if (state == 0xff) { 98 if (battp->cap >= 50) 99 state = 0; /* high */ 100 else 101 state = 1; /* low */ 102 } 103 104 return (state); 105} 106 107static int 108acpi_capm_convert_battflags(struct acpi_battinfo *battp) 109{ 110 int flags; 111 112 flags = 0; 113 114 if (battp->cap >= 50) 115 flags |= APM_BATT_HIGH; 116 else { 117 if (battp->state & ACPI_BATT_STAT_CRITICAL) 118 flags |= APM_BATT_CRITICAL; 119 else 120 flags |= APM_BATT_LOW; 121 } 122 if (battp->state & ACPI_BATT_STAT_CHARGING) 123 flags |= APM_BATT_CHARGING; 124 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 125 flags = APM_BATT_NOT_PRESENT; 126 127 return (flags); 128} 129 130static int 131acpi_capm_get_info(apm_info_t aip) 132{ 133 int acline; 134 struct acpi_battinfo batt; 135 136 aip->ai_infoversion = 1; 137 aip->ai_major = 1; 138 aip->ai_minor = 2; 139 aip->ai_status = apm_softc.active; 140 aip->ai_capabilities= 0xff00; /* XXX unknown */ 141 142 if (acpi_acad_get_acline(&acline)) 143 aip->ai_acline = 0xff; /* unknown */ 144 else 145 aip->ai_acline = acline; /* on/off */ 146 147 if (acpi_battery_get_battinfo(-1, &batt)) { 148 aip->ai_batt_stat = 0xff; /* unknown */ 149 aip->ai_batt_life = 0xff; /* unknown */ 150 aip->ai_batt_time = -1; /* unknown */ 151 aip->ai_batteries = 0; 152 } else { 153 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 154 aip->ai_batt_life = batt.cap; 155 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 156 aip->ai_batteries = acpi_battery_get_units(); 157 } 158 159 return (0); 160} 161 162static int 163acpi_capm_get_pwstatus(apm_pwstatus_t app) 164{ 165 int batt_unit; 166 int acline; 167 struct acpi_battinfo batt; 168 169 if (app->ap_device != PMDV_ALLDEV && 170 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 171 return (1); 172 173 if (app->ap_device == PMDV_ALLDEV) 174 batt_unit = -1; /* all units */ 175 else 176 batt_unit = app->ap_device - PMDV_BATT0; 177 178 if (acpi_battery_get_battinfo(batt_unit, &batt)) 179 return (1); 180 181 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 182 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 183 app->ap_batt_life = batt.cap; 184 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 185 186 if (acpi_acad_get_acline(&acline)) 187 app->ap_acline = 0xff; /* unknown */ 188 else 189 app->ap_acline = acline; /* on/off */ 190 191 return (0); 192} 193 194static int 195apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td) 196{ 197 return (0); 198} 199 200static int 201apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td) 202{ 203 return (0); 204} 205 206static int 207apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 208{ 209 int error = 0; 210 struct acpi_softc *acpi_sc; 211 struct apm_info info; 212 apm_info_old_t aiop; 213 214 acpi_sc = device_get_softc(acpi_dev); 215 216 switch (cmd) { 217 case APMIO_SUSPEND: 218 if ((flag & FWRITE) == 0) 219 return (EPERM); 220 if (apm_softc.active) 221 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 222 else 223 error = EINVAL; 224 break; 225 case APMIO_STANDBY: 226 if ((flag & FWRITE) == 0) 227 return (EPERM); 228 if (apm_softc.active) 229 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 230 else 231 error = EINVAL; 232 break; 233 case APMIO_GETINFO_OLD: 234 if (acpi_capm_get_info(&info)) 235 error = ENXIO; 236 aiop = (apm_info_old_t)addr; 237 aiop->ai_major = info.ai_major; 238 aiop->ai_minor = info.ai_minor; 239 aiop->ai_acline = info.ai_acline; 240 aiop->ai_batt_stat = info.ai_batt_stat; 241 aiop->ai_batt_life = info.ai_batt_life; 242 aiop->ai_status = info.ai_status; 243 break; 244 case APMIO_GETINFO: 245 if (acpi_capm_get_info((apm_info_t)addr)) 246 error = ENXIO; 247 break; 248 case APMIO_GETPWSTATUS: 249 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 250 error = ENXIO; 251 break; 252 case APMIO_ENABLE: 253 if ((flag & FWRITE) == 0) 254 return (EPERM); 255 apm_softc.active = 1; 256 break; 257 case APMIO_DISABLE: 258 if ((flag & FWRITE) == 0) 259 return (EPERM); 260 apm_softc.active = 0; 261 break; 262 case APMIO_HALTCPU: 263 break; 264 case APMIO_NOTHALTCPU: 265 break; 266 case APMIO_DISPLAY: 267 if ((flag & FWRITE) == 0) 268 return (EPERM); 269 break; 270 case APMIO_BIOS: 271 if ((flag & FWRITE) == 0) 272 return (EPERM); 273 bzero(addr, sizeof(struct apm_bios_arg)); 274 break; 275 default: 276 error = EINVAL; 277 break; 278 } 279 280 return (error); 281} 282 283static int 284apmwrite(struct cdev *dev, struct uio *uio, int ioflag) 285{ 286 return (uio->uio_resid); 287} 288 289static int 290apmpoll(struct cdev *dev, int events, d_thread_t *td) 291{ 292 return (0); 293} 294 295static void 296acpi_capm_init(struct acpi_softc *sc) 297{ 298 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 299} 300 301int 302acpi_machdep_init(device_t dev) 303{ 304 struct acpi_softc *sc; 305 306 acpi_dev = dev; 307 sc = device_get_softc(acpi_dev); 308 309 acpi_capm_init(sc); 310 311 acpi_install_wakeup_handler(sc); 312 313 if (intr_model == ACPI_INTR_PIC) 314 BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL, 315 INTR_POLARITY_LOW); 316 else 317 acpi_SetIntrModel(intr_model); 318 319 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 320 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 321 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0, 322 "Call the VESA reset BIOS vector on the resume path"); 323 324 return (0); 325} 326 327void 328acpi_SetDefaultIntrModel(int model) 329{ 330 331 intr_model = model; 332} 333