acpi_apm.c revision 159477
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 159477 2006-06-10 08:06:16Z 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 55SYSCTL_DECL(_debug_acpi); 56 57uint32_t acpi_resume_beep; 58TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep); 59SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep, 60 0, "Beep the PC speaker when resuming"); 61uint32_t acpi_reset_video; 62TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 63 64static int intr_model = ACPI_INTR_PIC; 65static int apm_active; 66 67static d_open_t apmopen; 68static d_close_t apmclose; 69static d_write_t apmwrite; 70static d_ioctl_t apmioctl; 71static d_poll_t apmpoll; 72 73static struct cdevsw apm_cdevsw = { 74 .d_version = D_VERSION, 75 .d_open = apmopen, 76 .d_close = apmclose, 77 .d_write = apmwrite, 78 .d_ioctl = apmioctl, 79 .d_poll = apmpoll, 80 .d_name = "apm", 81}; 82 83static int 84acpi_capm_convert_battstate(struct acpi_battinfo *battp) 85{ 86 int state; 87 88 state = APM_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 == APM_UNKNOWN) { 103 if (battp->cap >= 50) 104 state = 0; /* high */ 105 else 106 state = 1; /* low */ 107 } 108 109 return (state); 110} 111 112static int 113acpi_capm_convert_battflags(struct acpi_battinfo *battp) 114{ 115 int flags; 116 117 flags = 0; 118 119 if (battp->cap >= 50) 120 flags |= APM_BATT_HIGH; 121 else { 122 if (battp->state & ACPI_BATT_STAT_CRITICAL) 123 flags |= APM_BATT_CRITICAL; 124 else 125 flags |= APM_BATT_LOW; 126 } 127 if (battp->state & ACPI_BATT_STAT_CHARGING) 128 flags |= APM_BATT_CHARGING; 129 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 130 flags = APM_BATT_NOT_PRESENT; 131 132 return (flags); 133} 134 135static int 136acpi_capm_get_info(apm_info_t aip) 137{ 138 int acline; 139 struct acpi_battinfo batt; 140 141 aip->ai_infoversion = 1; 142 aip->ai_major = 1; 143 aip->ai_minor = 2; 144 aip->ai_status = apm_active; 145 aip->ai_capabilities= 0xff00; /* unknown */ 146 147 if (acpi_acad_get_acline(&acline)) 148 aip->ai_acline = APM_UNKNOWN; /* unknown */ 149 else 150 aip->ai_acline = acline; /* on/off */ 151 152 if (acpi_battery_get_battinfo(NULL, &batt) != 0) { 153 aip->ai_batt_stat = APM_UNKNOWN; 154 aip->ai_batt_life = APM_UNKNOWN; 155 aip->ai_batt_time = -1; /* unknown */ 156 aip->ai_batteries = ~0U; /* unknown */ 157 } else { 158 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 159 aip->ai_batt_life = batt.cap; 160 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 161 aip->ai_batteries = acpi_battery_get_units(); 162 } 163 164 return (0); 165} 166 167static int 168acpi_capm_get_pwstatus(apm_pwstatus_t app) 169{ 170 device_t dev; 171 int acline, unit, error; 172 struct acpi_battinfo batt; 173 174 if (app->ap_device != PMDV_ALLDEV && 175 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 176 return (1); 177 178 if (app->ap_device == PMDV_ALLDEV) 179 error = acpi_battery_get_battinfo(NULL, &batt); 180 else { 181 unit = app->ap_device - PMDV_BATT0; 182 dev = devclass_get_device(devclass_find("battery"), unit); 183 if (dev != NULL) 184 error = acpi_battery_get_battinfo(dev, &batt); 185 else 186 error = ENXIO; 187 } 188 if (error) 189 return (1); 190 191 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 192 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 193 app->ap_batt_life = batt.cap; 194 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 195 196 if (acpi_acad_get_acline(&acline)) 197 app->ap_acline = APM_UNKNOWN; 198 else 199 app->ap_acline = acline; /* on/off */ 200 201 return (0); 202} 203 204static int 205apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td) 206{ 207 return (0); 208} 209 210static int 211apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td) 212{ 213 return (0); 214} 215 216static int 217apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 218{ 219 int error = 0; 220 struct acpi_softc *acpi_sc; 221 struct apm_info info; 222 apm_info_old_t aiop; 223 224 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 225 226 switch (cmd) { 227 case APMIO_SUSPEND: 228 if ((flag & FWRITE) == 0) 229 return (EPERM); 230 if (apm_active) 231 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 232 else 233 error = EINVAL; 234 break; 235 case APMIO_STANDBY: 236 if ((flag & FWRITE) == 0) 237 return (EPERM); 238 if (apm_active) 239 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 240 else 241 error = EINVAL; 242 break; 243 case APMIO_GETINFO_OLD: 244 if (acpi_capm_get_info(&info)) 245 error = ENXIO; 246 aiop = (apm_info_old_t)addr; 247 aiop->ai_major = info.ai_major; 248 aiop->ai_minor = info.ai_minor; 249 aiop->ai_acline = info.ai_acline; 250 aiop->ai_batt_stat = info.ai_batt_stat; 251 aiop->ai_batt_life = info.ai_batt_life; 252 aiop->ai_status = info.ai_status; 253 break; 254 case APMIO_GETINFO: 255 if (acpi_capm_get_info((apm_info_t)addr)) 256 error = ENXIO; 257 break; 258 case APMIO_GETPWSTATUS: 259 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 260 error = ENXIO; 261 break; 262 case APMIO_ENABLE: 263 if ((flag & FWRITE) == 0) 264 return (EPERM); 265 apm_active = 1; 266 break; 267 case APMIO_DISABLE: 268 if ((flag & FWRITE) == 0) 269 return (EPERM); 270 apm_active = 0; 271 break; 272 case APMIO_HALTCPU: 273 break; 274 case APMIO_NOTHALTCPU: 275 break; 276 case APMIO_DISPLAY: 277 if ((flag & FWRITE) == 0) 278 return (EPERM); 279 break; 280 case APMIO_BIOS: 281 if ((flag & FWRITE) == 0) 282 return (EPERM); 283 bzero(addr, sizeof(struct apm_bios_arg)); 284 break; 285 default: 286 error = EINVAL; 287 break; 288 } 289 290 return (error); 291} 292 293static int 294apmwrite(struct cdev *dev, struct uio *uio, int ioflag) 295{ 296 return (uio->uio_resid); 297} 298 299static int 300apmpoll(struct cdev *dev, int events, d_thread_t *td) 301{ 302 return (0); 303} 304 305static void 306acpi_capm_init(struct acpi_softc *sc) 307{ 308 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 309} 310 311int 312acpi_machdep_init(device_t dev) 313{ 314 struct acpi_softc *sc; 315 316 sc = devclass_get_softc(devclass_find("acpi"), 0); 317 acpi_capm_init(sc); 318 319 acpi_install_wakeup_handler(sc); 320 321 if (intr_model == ACPI_INTR_PIC) 322 BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL, 323 INTR_POLARITY_LOW); 324 else 325 acpi_SetIntrModel(intr_model); 326 327 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 328 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 329 "reset_video", 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