acpi_apm.c revision 168191
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 168191 2007-03-31 23:23:42Z jhb $"); 29 30#include <sys/param.h> 31#include <sys/bus.h> 32#include <sys/condvar.h> 33#include <sys/conf.h> 34#include <sys/fcntl.h> 35#include <sys/kernel.h> 36#include <sys/sysctl.h> 37#include <sys/uio.h> 38#include <vm/vm.h> 39#include <vm/pmap.h> 40 41#include <contrib/dev/acpica/acpi.h> 42#include <dev/acpica/acpivar.h> 43#include <dev/acpica/acpiio.h> 44 45/* 46 * APM driver emulation 47 */ 48 49#include <sys/selinfo.h> 50 51#include <machine/apm_bios.h> 52#include <machine/pc/bios.h> 53 54#include <i386/bios/apm.h> 55 56SYSCTL_DECL(_debug_acpi); 57 58uint32_t acpi_resume_beep; 59TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep); 60SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep, 61 0, "Beep the PC speaker when resuming"); 62uint32_t acpi_reset_video; 63TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 64 65static int intr_model = ACPI_INTR_PIC; 66static int apm_active; 67 68static d_open_t apmopen; 69static d_close_t apmclose; 70static d_write_t apmwrite; 71static d_ioctl_t apmioctl; 72static d_poll_t apmpoll; 73 74static struct cdevsw apm_cdevsw = { 75 .d_version = D_VERSION, 76 .d_open = apmopen, 77 .d_close = apmclose, 78 .d_write = apmwrite, 79 .d_ioctl = apmioctl, 80 .d_poll = apmpoll, 81 .d_name = "apm", 82}; 83 84static int 85acpi_capm_convert_battstate(struct acpi_battinfo *battp) 86{ 87 int state; 88 89 state = APM_UNKNOWN; 90 91 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 92 if (battp->cap >= 50) 93 state = 0; /* high */ 94 else 95 state = 1; /* low */ 96 } 97 if (battp->state & ACPI_BATT_STAT_CRITICAL) 98 state = 2; /* critical */ 99 if (battp->state & ACPI_BATT_STAT_CHARGING) 100 state = 3; /* charging */ 101 102 /* If still unknown, determine it based on the battery capacity. */ 103 if (state == APM_UNKNOWN) { 104 if (battp->cap >= 50) 105 state = 0; /* high */ 106 else 107 state = 1; /* low */ 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_active; 146 aip->ai_capabilities= 0xff00; /* unknown */ 147 148 if (acpi_acad_get_acline(&acline)) 149 aip->ai_acline = APM_UNKNOWN; /* unknown */ 150 else 151 aip->ai_acline = acline; /* on/off */ 152 153 if (acpi_battery_get_battinfo(NULL, &batt) != 0) { 154 aip->ai_batt_stat = APM_UNKNOWN; 155 aip->ai_batt_life = APM_UNKNOWN; 156 aip->ai_batt_time = -1; /* unknown */ 157 aip->ai_batteries = ~0U; /* unknown */ 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 device_t dev; 172 int acline, unit, error; 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 if (app->ap_device == PMDV_ALLDEV) 180 error = acpi_battery_get_battinfo(NULL, &batt); 181 else { 182 unit = app->ap_device - PMDV_BATT0; 183 dev = devclass_get_device(devclass_find("battery"), unit); 184 if (dev != NULL) 185 error = acpi_battery_get_battinfo(dev, &batt); 186 else 187 error = ENXIO; 188 } 189 if (error) 190 return (1); 191 192 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 193 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 194 app->ap_batt_life = batt.cap; 195 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 196 197 if (acpi_acad_get_acline(&acline)) 198 app->ap_acline = APM_UNKNOWN; 199 else 200 app->ap_acline = acline; /* on/off */ 201 202 return (0); 203} 204 205static int 206apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td) 207{ 208 return (0); 209} 210 211static int 212apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td) 213{ 214 return (0); 215} 216 217static int 218apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 219{ 220 int error = 0; 221 struct acpi_softc *acpi_sc; 222 struct apm_info info; 223 apm_info_old_t aiop; 224 225 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 226 227 switch (cmd) { 228 case APMIO_SUSPEND: 229 if ((flag & FWRITE) == 0) 230 return (EPERM); 231 if (apm_active) 232 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 233 else 234 error = EINVAL; 235 break; 236 case APMIO_STANDBY: 237 if ((flag & FWRITE) == 0) 238 return (EPERM); 239 if (apm_active) 240 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 241 else 242 error = EINVAL; 243 break; 244 case APMIO_GETINFO_OLD: 245 if (acpi_capm_get_info(&info)) 246 error = ENXIO; 247 aiop = (apm_info_old_t)addr; 248 aiop->ai_major = info.ai_major; 249 aiop->ai_minor = info.ai_minor; 250 aiop->ai_acline = info.ai_acline; 251 aiop->ai_batt_stat = info.ai_batt_stat; 252 aiop->ai_batt_life = info.ai_batt_life; 253 aiop->ai_status = info.ai_status; 254 break; 255 case APMIO_GETINFO: 256 if (acpi_capm_get_info((apm_info_t)addr)) 257 error = ENXIO; 258 break; 259 case APMIO_GETPWSTATUS: 260 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 261 error = ENXIO; 262 break; 263 case APMIO_ENABLE: 264 if ((flag & FWRITE) == 0) 265 return (EPERM); 266 apm_active = 1; 267 break; 268 case APMIO_DISABLE: 269 if ((flag & FWRITE) == 0) 270 return (EPERM); 271 apm_active = 0; 272 break; 273 case APMIO_HALTCPU: 274 break; 275 case APMIO_NOTHALTCPU: 276 break; 277 case APMIO_DISPLAY: 278 if ((flag & FWRITE) == 0) 279 return (EPERM); 280 break; 281 case APMIO_BIOS: 282 if ((flag & FWRITE) == 0) 283 return (EPERM); 284 bzero(addr, sizeof(struct apm_bios_arg)); 285 break; 286 default: 287 error = EINVAL; 288 break; 289 } 290 291 return (error); 292} 293 294static int 295apmwrite(struct cdev *dev, struct uio *uio, int ioflag) 296{ 297 return (uio->uio_resid); 298} 299 300static int 301apmpoll(struct cdev *dev, int events, d_thread_t *td) 302{ 303 return (0); 304} 305 306static void 307acpi_capm_init(struct acpi_softc *sc) 308{ 309 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 310} 311 312int 313acpi_machdep_init(device_t dev) 314{ 315 struct acpi_softc *sc; 316 317 sc = devclass_get_softc(devclass_find("acpi"), 0); 318 acpi_capm_init(sc); 319 320 acpi_install_wakeup_handler(sc); 321 322 if (intr_model == ACPI_INTR_PIC) 323 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt, 324 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW); 325 else 326 acpi_SetIntrModel(intr_model); 327 328 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 329 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 330 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0, 331 "Call the VESA reset BIOS vector on the resume path"); 332 333 return (0); 334} 335 336void 337acpi_SetDefaultIntrModel(int model) 338{ 339 340 intr_model = model; 341} 342 343/* Check BIOS date. If 1998 or older, disable ACPI. */ 344int 345acpi_machdep_quirks(int *quirks) 346{ 347 char *va; 348 int year; 349 350 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */ 351 va = pmap_mapbios(0xffff0, 16); 352 sscanf(va + 11, "%2d", &year); 353 pmap_unmapbios((vm_offset_t)va, 16); 354 355 /* 356 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this 357 * check must be changed by my 114th birthday. 358 */ 359 if (year > 90 && year < 99) 360 *quirks = ACPI_Q_BROKEN; 361 362 return (0); 363} 364 365void 366acpi_cpu_c1() 367{ 368 __asm __volatile("sti; hlt"); 369} 370