acpi_apm.c revision 148352
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 148352 2005-07-23 19:36:00Z 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 "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_reset_video = 1; 56TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 57 58static int intr_model = ACPI_INTR_PIC; 59static int apm_active; 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_open = apmopen, 70 .d_close = apmclose, 71 .d_write = apmwrite, 72 .d_ioctl = apmioctl, 73 .d_poll = apmpoll, 74 .d_name = "apm", 75}; 76 77static int 78acpi_capm_convert_battstate(struct acpi_battinfo *battp) 79{ 80 int state; 81 82 state = APM_UNKNOWN; 83 84 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 85 if (battp->cap >= 50) 86 state = 0; /* high */ 87 else 88 state = 1; /* low */ 89 } 90 if (battp->state & ACPI_BATT_STAT_CRITICAL) 91 state = 2; /* critical */ 92 if (battp->state & ACPI_BATT_STAT_CHARGING) 93 state = 3; /* charging */ 94 95 /* If still unknown, determine it based on the battery capacity. */ 96 if (state == APM_UNKNOWN) { 97 if (battp->cap >= 50) 98 state = 0; /* high */ 99 else 100 state = 1; /* low */ 101 } 102 103 return (state); 104} 105 106static int 107acpi_capm_convert_battflags(struct acpi_battinfo *battp) 108{ 109 int flags; 110 111 flags = 0; 112 113 if (battp->cap >= 50) 114 flags |= APM_BATT_HIGH; 115 else { 116 if (battp->state & ACPI_BATT_STAT_CRITICAL) 117 flags |= APM_BATT_CRITICAL; 118 else 119 flags |= APM_BATT_LOW; 120 } 121 if (battp->state & ACPI_BATT_STAT_CHARGING) 122 flags |= APM_BATT_CHARGING; 123 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 124 flags = APM_BATT_NOT_PRESENT; 125 126 return (flags); 127} 128 129static int 130acpi_capm_get_info(apm_info_t aip) 131{ 132 int acline; 133 struct acpi_battinfo batt; 134 135 aip->ai_infoversion = 1; 136 aip->ai_major = 1; 137 aip->ai_minor = 2; 138 aip->ai_status = apm_active; 139 aip->ai_capabilities= 0xff00; /* unknown */ 140 141 if (acpi_acad_get_acline(&acline)) 142 aip->ai_acline = APM_UNKNOWN; /* unknown */ 143 else 144 aip->ai_acline = acline; /* on/off */ 145 146 if (acpi_battery_get_battinfo(NULL, &batt) != 0) { 147 aip->ai_batt_stat = APM_UNKNOWN; 148 aip->ai_batt_life = APM_UNKNOWN; 149 aip->ai_batt_time = -1; /* unknown */ 150 aip->ai_batteries = ~0U; /* unknown */ 151 } else { 152 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 153 aip->ai_batt_life = batt.cap; 154 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 155 aip->ai_batteries = acpi_battery_get_units(); 156 } 157 158 return (0); 159} 160 161static int 162acpi_capm_get_pwstatus(apm_pwstatus_t app) 163{ 164 device_t dev; 165 int acline, unit, error; 166 struct acpi_battinfo batt; 167 168 if (app->ap_device != PMDV_ALLDEV && 169 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 170 return (1); 171 172 if (app->ap_device == PMDV_ALLDEV) 173 error = acpi_battery_get_battinfo(NULL, &batt); 174 else { 175 unit = app->ap_device - PMDV_BATT0; 176 dev = devclass_get_device(devclass_find("battery"), unit); 177 if (dev != NULL) 178 error = acpi_battery_get_battinfo(dev, &batt); 179 else 180 error = ENXIO; 181 } 182 if (error) 183 return (1); 184 185 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 186 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 187 app->ap_batt_life = batt.cap; 188 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 189 190 if (acpi_acad_get_acline(&acline)) 191 app->ap_acline = APM_UNKNOWN; 192 else 193 app->ap_acline = acline; /* on/off */ 194 195 return (0); 196} 197 198static int 199apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td) 200{ 201 return (0); 202} 203 204static int 205apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td) 206{ 207 return (0); 208} 209 210static int 211apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td) 212{ 213 int error = 0; 214 struct acpi_softc *acpi_sc; 215 struct apm_info info; 216 apm_info_old_t aiop; 217 218 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 219 220 switch (cmd) { 221 case APMIO_SUSPEND: 222 if ((flag & FWRITE) == 0) 223 return (EPERM); 224 if (apm_active) 225 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 226 else 227 error = EINVAL; 228 break; 229 case APMIO_STANDBY: 230 if ((flag & FWRITE) == 0) 231 return (EPERM); 232 if (apm_active) 233 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 234 else 235 error = EINVAL; 236 break; 237 case APMIO_GETINFO_OLD: 238 if (acpi_capm_get_info(&info)) 239 error = ENXIO; 240 aiop = (apm_info_old_t)addr; 241 aiop->ai_major = info.ai_major; 242 aiop->ai_minor = info.ai_minor; 243 aiop->ai_acline = info.ai_acline; 244 aiop->ai_batt_stat = info.ai_batt_stat; 245 aiop->ai_batt_life = info.ai_batt_life; 246 aiop->ai_status = info.ai_status; 247 break; 248 case APMIO_GETINFO: 249 if (acpi_capm_get_info((apm_info_t)addr)) 250 error = ENXIO; 251 break; 252 case APMIO_GETPWSTATUS: 253 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr)) 254 error = ENXIO; 255 break; 256 case APMIO_ENABLE: 257 if ((flag & FWRITE) == 0) 258 return (EPERM); 259 apm_active = 1; 260 break; 261 case APMIO_DISABLE: 262 if ((flag & FWRITE) == 0) 263 return (EPERM); 264 apm_active = 0; 265 break; 266 case APMIO_HALTCPU: 267 break; 268 case APMIO_NOTHALTCPU: 269 break; 270 case APMIO_DISPLAY: 271 if ((flag & FWRITE) == 0) 272 return (EPERM); 273 break; 274 case APMIO_BIOS: 275 if ((flag & FWRITE) == 0) 276 return (EPERM); 277 bzero(addr, sizeof(struct apm_bios_arg)); 278 break; 279 default: 280 error = EINVAL; 281 break; 282 } 283 284 return (error); 285} 286 287static int 288apmwrite(struct cdev *dev, struct uio *uio, int ioflag) 289{ 290 return (uio->uio_resid); 291} 292 293static int 294apmpoll(struct cdev *dev, int events, d_thread_t *td) 295{ 296 return (0); 297} 298 299static void 300acpi_capm_init(struct acpi_softc *sc) 301{ 302 make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm"); 303} 304 305int 306acpi_machdep_init(device_t dev) 307{ 308 struct acpi_softc *sc; 309 310 sc = devclass_get_softc(devclass_find("acpi"), 0); 311 acpi_capm_init(sc); 312 313 acpi_install_wakeup_handler(sc); 314 315 if (intr_model == ACPI_INTR_PIC) 316 BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL, 317 INTR_POLARITY_LOW); 318 else 319 acpi_SetIntrModel(intr_model); 320 321 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 322 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 323 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0, 324 "Call the VESA reset BIOS vector on the resume path"); 325 326 return (0); 327} 328 329void 330acpi_SetDefaultIntrModel(int model) 331{ 332 333 intr_model = model; 334} 335 336/* Check BIOS date. If 1998 or older, disable ACPI. */ 337int 338acpi_machdep_quirks(int *quirks) 339{ 340 char *va; 341 int year; 342 343 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */ 344 va = pmap_mapdev(0xffff0, 16); 345 sscanf(va + 11, "%2d", &year); 346 pmap_unmapdev((vm_offset_t)va, 16); 347 348 /* 349 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this 350 * check must be changed by my 114th birthday. 351 */ 352 if (year > 90 && year < 99) 353 *quirks = ACPI_Q_BROKEN; 354 355 return (0); 356} 357 358void 359acpi_cpu_c1() 360{ 361 __asm __volatile("sti; hlt"); 362} 363