acpi_apm.c revision 159409
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 159409 2006-06-08 17:54:10Z njl $"); 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#include <vm/vm.h> 38#include <vm/pmap.h> 39 40#include <contrib/dev/acpica/acpi.h> 41#include <dev/acpica/acpivar.h> 42#include <dev/acpica/acpiio.h> 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_resume_beep; 56TUNABLE_INT("hw.acpi.resume_beep", &acpi_resume_beep); 57uint32_t acpi_reset_video; 58TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 59 60static int intr_model = ACPI_INTR_PIC; 61static int apm_active; 62 63static d_open_t apmopen; 64static d_close_t apmclose; 65static d_write_t apmwrite; 66static d_ioctl_t apmioctl; 67static d_poll_t apmpoll; 68 69static struct cdevsw apm_cdevsw = { 70 .d_version = D_VERSION, 71 .d_open = apmopen, 72 .d_close = apmclose, 73 .d_write = apmwrite, 74 .d_ioctl = apmioctl, 75 .d_poll = apmpoll, 76 .d_name = "apm", 77}; 78 79static int 80acpi_capm_convert_battstate(struct acpi_battinfo *battp) 81{ 82 int state; 83 84 state = APM_UNKNOWN; 85 86 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 87 if (battp->cap >= 50) 88 state = 0; /* high */ 89 else 90 state = 1; /* low */ 91 } 92 if (battp->state & ACPI_BATT_STAT_CRITICAL) 93 state = 2; /* critical */ 94 if (battp->state & ACPI_BATT_STAT_CHARGING) 95 state = 3; /* charging */ 96 97 /* If still unknown, determine it based on the battery capacity. */ 98 if (state == APM_UNKNOWN) { 99 if (battp->cap >= 50) 100 state = 0; /* high */ 101 else 102 state = 1; /* low */ 103 } 104 105 return (state); 106} 107 108static int 109acpi_capm_convert_battflags(struct acpi_battinfo *battp) 110{ 111 int flags; 112 113 flags = 0; 114 115 if (battp->cap >= 50) 116 flags |= APM_BATT_HIGH; 117 else { 118 if (battp->state & ACPI_BATT_STAT_CRITICAL) 119 flags |= APM_BATT_CRITICAL; 120 else 121 flags |= APM_BATT_LOW; 122 } 123 if (battp->state & ACPI_BATT_STAT_CHARGING) 124 flags |= APM_BATT_CHARGING; 125 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 126 flags = APM_BATT_NOT_PRESENT; 127 128 return (flags); 129} 130 131static int 132acpi_capm_get_info(apm_info_t aip) 133{ 134 int acline; 135 struct acpi_battinfo batt; 136 137 aip->ai_infoversion = 1; 138 aip->ai_major = 1; 139 aip->ai_minor = 2; 140 aip->ai_status = apm_active; 141 aip->ai_capabilities= 0xff00; /* unknown */ 142 143 if (acpi_acad_get_acline(&acline)) 144 aip->ai_acline = APM_UNKNOWN; /* unknown */ 145 else 146 aip->ai_acline = acline; /* on/off */ 147 148 if (acpi_battery_get_battinfo(NULL, &batt) != 0) { 149 aip->ai_batt_stat = APM_UNKNOWN; 150 aip->ai_batt_life = APM_UNKNOWN; 151 aip->ai_batt_time = -1; /* unknown */ 152 aip->ai_batteries = ~0U; /* unknown */ 153 } else { 154 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 155 aip->ai_batt_life = batt.cap; 156 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 157 aip->ai_batteries = acpi_battery_get_units(); 158 } 159 160 return (0); 161} 162 163static int 164acpi_capm_get_pwstatus(apm_pwstatus_t app) 165{ 166 device_t dev; 167 int acline, unit, error; 168 struct acpi_battinfo batt; 169 170 if (app->ap_device != PMDV_ALLDEV && 171 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 172 return (1); 173 174 if (app->ap_device == PMDV_ALLDEV) 175 error = acpi_battery_get_battinfo(NULL, &batt); 176 else { 177 unit = app->ap_device - PMDV_BATT0; 178 dev = devclass_get_device(devclass_find("battery"), unit); 179 if (dev != NULL) 180 error = acpi_battery_get_battinfo(dev, &batt); 181 else 182 error = ENXIO; 183 } 184 if (error) 185 return (1); 186 187 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 188 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 189 app->ap_batt_life = batt.cap; 190 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 191 192 if (acpi_acad_get_acline(&acline)) 193 app->ap_acline = APM_UNKNOWN; 194 else 195 app->ap_acline = acline; /* on/off */ 196 197 return (0); 198} 199 200static int 201apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td) 202{ 203 return (0); 204} 205 206static int 207apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td) 208{ 209 return (0); 210} 211 212static int 213apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 214{ 215 int error = 0; 216 struct acpi_softc *acpi_sc; 217 struct apm_info info; 218 apm_info_old_t aiop; 219 220 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 221 222 switch (cmd) { 223 case APMIO_SUSPEND: 224 if ((flag & FWRITE) == 0) 225 return (EPERM); 226 if (apm_active) 227 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 228 else 229 error = EINVAL; 230 break; 231 case APMIO_STANDBY: 232 if ((flag & FWRITE) == 0) 233 return (EPERM); 234 if (apm_active) 235 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 236 else 237 error = EINVAL; 238 break; 239 case APMIO_GETINFO_OLD: 240 if (acpi_capm_get_info(&info)) 241 error = ENXIO; 242 aiop = (apm_info_old_t)addr; 243 aiop->ai_major = info.ai_major; 244 aiop->ai_minor = info.ai_minor; 245 aiop->ai_acline = info.ai_acline; 246 aiop->ai_batt_stat = info.ai_batt_stat; 247 aiop->ai_batt_life = info.ai_batt_life; 248 aiop->ai_status = info.ai_status; 249 break; 250 case APMIO_GETINFO: 251 if (acpi_capm_get_info((apm_info_t)addr)) 252 error = ENXIO; 253 break; 254 case APMIO_GETPWSTATUS: 255 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 256 error = ENXIO; 257 break; 258 case APMIO_ENABLE: 259 if ((flag & FWRITE) == 0) 260 return (EPERM); 261 apm_active = 1; 262 break; 263 case APMIO_DISABLE: 264 if ((flag & FWRITE) == 0) 265 return (EPERM); 266 apm_active = 0; 267 break; 268 case APMIO_HALTCPU: 269 break; 270 case APMIO_NOTHALTCPU: 271 break; 272 case APMIO_DISPLAY: 273 if ((flag & FWRITE) == 0) 274 return (EPERM); 275 break; 276 case APMIO_BIOS: 277 if ((flag & FWRITE) == 0) 278 return (EPERM); 279 bzero(addr, sizeof(struct apm_bios_arg)); 280 break; 281 default: 282 error = EINVAL; 283 break; 284 } 285 286 return (error); 287} 288 289static int 290apmwrite(struct cdev *dev, struct uio *uio, int ioflag) 291{ 292 return (uio->uio_resid); 293} 294 295static int 296apmpoll(struct cdev *dev, int events, d_thread_t *td) 297{ 298 return (0); 299} 300 301static void 302acpi_capm_init(struct acpi_softc *sc) 303{ 304 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 305} 306 307int 308acpi_machdep_init(device_t dev) 309{ 310 struct acpi_softc *sc; 311 312 sc = devclass_get_softc(devclass_find("acpi"), 0); 313 acpi_capm_init(sc); 314 315 acpi_install_wakeup_handler(sc); 316 317 if (intr_model == ACPI_INTR_PIC) 318 BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL, 319 INTR_POLARITY_LOW); 320 else 321 acpi_SetIntrModel(intr_model); 322 323 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 324 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 325 "resume_beep", CTLFLAG_RD | CTLFLAG_RW, &acpi_resume_beep, 0, 326 "Beep the PC speaker when resuming"); 327 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 328 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 329 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0, 330 "Call the VESA reset BIOS vector on the resume path"); 331 332 return (0); 333} 334 335void 336acpi_SetDefaultIntrModel(int model) 337{ 338 339 intr_model = model; 340} 341 342/* Check BIOS date. If 1998 or older, disable ACPI. */ 343int 344acpi_machdep_quirks(int *quirks) 345{ 346 char *va; 347 int year; 348 349 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */ 350 va = pmap_mapdev(0xffff0, 16); 351 sscanf(va + 11, "%2d", &year); 352 pmap_unmapdev((vm_offset_t)va, 16); 353 354 /* 355 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this 356 * check must be changed by my 114th birthday. 357 */ 358 if (year > 90 && year < 99) 359 *quirks = ACPI_Q_BROKEN; 360 361 return (0); 362} 363 364void 365acpi_cpu_c1() 366{ 367 __asm __volatile("sti; hlt"); 368} 369