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 * $FreeBSD: src/sys/i386/acpica/acpi_machdep.c,v 1.20 2004/05/05 19:51:15 njl Exp $ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/conf.h> 32 #include <sys/device.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 42 static device_t acpi_dev; 43 44 /* 45 * APM driver emulation 46 */ 47 48 #include <sys/event.h> 49 50 #include <machine/apm_bios.h> 51 #include <machine/pc/bios.h> 52 #include <machine_base/apic/ioapic.h> 53 #include <machine/smp.h> 54 55 uint32_t acpi_reset_video = 1; 56 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 57 58 static int apm_active; 59 60 static d_open_t apmopen; 61 static d_close_t apmclose; 62 static d_write_t apmwrite; 63 static d_ioctl_t apmioctl; 64 static d_kqfilter_t apmkqfilter; 65 66 static struct dev_ops apm_ops = { 67 { "apm", 0, 0 }, 68 .d_open = apmopen, 69 .d_close = apmclose, 70 .d_write = apmwrite, 71 .d_ioctl = apmioctl, 72 .d_kqfilter = apmkqfilter 73 }; 74 75 static int 76 acpi_capm_convert_battstate(struct acpi_battinfo *battp) 77 { 78 int state; 79 80 state = 0xff; /* XXX unknown */ 81 82 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 83 if (battp->cap >= 50) 84 state = 0; /* high */ 85 else 86 state = 1; /* low */ 87 } 88 if (battp->state & ACPI_BATT_STAT_CRITICAL) 89 state = 2; /* critical */ 90 if (battp->state & ACPI_BATT_STAT_CHARGING) 91 state = 3; /* charging */ 92 93 /* If still unknown, determine it based on the battery capacity. */ 94 if (state == 0xff) { 95 if (battp->cap >= 50) 96 state = 0; /* high */ 97 else 98 state = 1; /* low */ 99 } 100 101 return (state); 102 } 103 104 static int 105 acpi_capm_convert_battflags(struct acpi_battinfo *battp) 106 { 107 int flags; 108 109 flags = 0; 110 111 if (battp->cap >= 50) 112 flags |= APM_BATT_HIGH; 113 else { 114 if (battp->state & ACPI_BATT_STAT_CRITICAL) 115 flags |= APM_BATT_CRITICAL; 116 else 117 flags |= APM_BATT_LOW; 118 } 119 if (battp->state & ACPI_BATT_STAT_CHARGING) 120 flags |= APM_BATT_CHARGING; 121 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 122 flags = APM_BATT_NOT_PRESENT; 123 124 return (flags); 125 } 126 127 static int 128 acpi_capm_get_info(apm_info_t aip) 129 { 130 int acline; 131 struct acpi_battinfo batt; 132 133 aip->ai_infoversion = 1; 134 aip->ai_major = 1; 135 aip->ai_minor = 2; 136 aip->ai_status = apm_active; 137 aip->ai_capabilities= 0xff00; /* XXX unknown */ 138 139 if (acpi_acad_get_acline(&acline)) 140 aip->ai_acline = 0xff; /* unknown */ 141 else 142 aip->ai_acline = acline; /* on/off */ 143 144 if (acpi_battery_get_battinfo(NULL, &batt)) { 145 aip->ai_batt_stat = 0xff; /* unknown */ 146 aip->ai_batt_life = 0xff; /* unknown */ 147 aip->ai_batt_time = -1; /* unknown */ 148 aip->ai_batteries = 0; 149 } else { 150 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 151 aip->ai_batt_life = batt.cap; 152 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 153 aip->ai_batteries = acpi_battery_get_units(); 154 } 155 156 return (0); 157 } 158 159 static int 160 acpi_capm_get_pwstatus(apm_pwstatus_t app) 161 { 162 device_t dev; 163 int acline, unit, error; 164 struct acpi_battinfo batt; 165 166 if (app->ap_device != PMDV_ALLDEV && 167 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 168 return (1); 169 170 if (app->ap_device == PMDV_ALLDEV) 171 error = acpi_battery_get_battinfo(NULL, &batt); 172 else { 173 unit = app->ap_device - PMDV_BATT0; 174 dev = devclass_get_device(devclass_find("battery"), unit); 175 if (dev != NULL) 176 error = acpi_battery_get_battinfo(dev, &batt); 177 else 178 error = ENXIO; 179 } 180 if (error) 181 return (1); 182 183 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 184 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 185 app->ap_batt_life = batt.cap; 186 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 187 188 if (acpi_acad_get_acline(&acline)) 189 app->ap_acline = 0xff; /* unknown */ 190 else 191 app->ap_acline = acline; /* on/off */ 192 193 return (0); 194 } 195 196 static int 197 apmopen(struct dev_open_args *ap) 198 { 199 return (0); 200 } 201 202 static int 203 apmclose(struct dev_close_args *ap) 204 { 205 return (0); 206 } 207 208 static int 209 apmioctl(struct dev_ioctl_args *ap) 210 { 211 int error = 0; 212 struct acpi_softc *acpi_sc; 213 struct apm_info info; 214 apm_info_old_t aiop; 215 216 acpi_sc = device_get_softc(acpi_dev); 217 218 switch (ap->a_cmd) { 219 case APMIO_SUSPEND: 220 if ((ap->a_fflag & FWRITE) == 0) 221 return (EPERM); 222 if (apm_active) 223 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 224 else 225 error = EINVAL; 226 break; 227 case APMIO_STANDBY: 228 if ((ap->a_fflag & FWRITE) == 0) 229 return (EPERM); 230 if (apm_active) 231 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 232 else 233 error = EINVAL; 234 break; 235 case APMIO_GETINFO_OLD: 236 if (acpi_capm_get_info(&info)) 237 error = ENXIO; 238 aiop = (apm_info_old_t)ap->a_data; 239 aiop->ai_major = info.ai_major; 240 aiop->ai_minor = info.ai_minor; 241 aiop->ai_acline = info.ai_acline; 242 aiop->ai_batt_stat = info.ai_batt_stat; 243 aiop->ai_batt_life = info.ai_batt_life; 244 aiop->ai_status = info.ai_status; 245 break; 246 case APMIO_GETINFO: 247 if (acpi_capm_get_info((apm_info_t)ap->a_data)) 248 error = ENXIO; 249 break; 250 case APMIO_GETPWSTATUS: 251 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data)) 252 error = ENXIO; 253 break; 254 case APMIO_ENABLE: 255 if ((ap->a_fflag & FWRITE) == 0) 256 return (EPERM); 257 apm_active = 1; 258 break; 259 case APMIO_DISABLE: 260 if ((ap->a_fflag & FWRITE) == 0) 261 return (EPERM); 262 apm_active = 0; 263 break; 264 case APMIO_HALTCPU: 265 break; 266 case APMIO_NOTHALTCPU: 267 break; 268 case APMIO_DISPLAY: 269 if ((ap->a_fflag & FWRITE) == 0) 270 return (EPERM); 271 break; 272 case APMIO_BIOS: 273 if ((ap->a_fflag & FWRITE) == 0) 274 return (EPERM); 275 bzero(ap->a_data, sizeof(struct apm_bios_arg)); 276 break; 277 default: 278 error = EINVAL; 279 break; 280 } 281 282 return (error); 283 } 284 285 static int 286 apmwrite(struct dev_write_args *ap) 287 { 288 return (ap->a_uio->uio_resid); 289 } 290 291 static void apmfilter_detach(struct knote *); 292 static int apmfilter(struct knote *, long); 293 294 static struct filterops apmfilterops = 295 { FILTEROP_ISFD, NULL, apmfilter_detach, apmfilter }; 296 297 static int 298 apmkqfilter(struct dev_kqfilter_args *ap) 299 { 300 struct knote *kn = ap->a_kn; 301 302 kn->kn_fop = &apmfilterops; 303 ap->a_result = 0; 304 return (0); 305 } 306 307 static void 308 apmfilter_detach(struct knote *kn) {} 309 310 static int 311 apmfilter(struct knote *kn, long hint) 312 { 313 return (0); 314 } 315 316 static void 317 acpi_capm_init(struct acpi_softc *sc) 318 { 319 make_dev(&apm_ops, 0, 0, 5, 0664, "apm"); 320 make_dev(&apm_ops, 8, 0, 5, 0664, "apm"); 321 } 322 323 int 324 acpi_machdep_init(device_t dev) 325 { 326 struct acpi_softc *sc; 327 328 acpi_dev = dev; 329 sc = device_get_softc(acpi_dev); 330 331 acpi_capm_init(sc); 332 333 acpi_install_wakeup_handler(sc); 334 335 if (ioapic_enable) 336 acpi_SetIntrModel(ACPI_INTR_APIC); 337 338 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 339 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 340 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0, 341 "Call the VESA reset BIOS vector on the resume path"); 342 343 return (0); 344 } 345 346 int 347 acpi_machdep_quirks(int *quirks) 348 { 349 return (0); 350 } 351 352