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/apm/apm.h> 53 #include <machine_base/apic/ioapic.h> 54 #include <machine/smp.h> 55 56 uint32_t acpi_reset_video = 1; 57 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 58 59 static struct apm_softc apm_softc; 60 61 static d_open_t apmopen; 62 static d_close_t apmclose; 63 static d_write_t apmwrite; 64 static d_ioctl_t apmioctl; 65 static d_kqfilter_t apmkqfilter; 66 67 static struct dev_ops apm_ops = { 68 { "apm", 0, 0 }, 69 .d_open = apmopen, 70 .d_close = apmclose, 71 .d_write = apmwrite, 72 .d_ioctl = apmioctl, 73 .d_kqfilter = apmkqfilter 74 }; 75 76 static int 77 acpi_capm_convert_battstate(struct acpi_battinfo *battp) 78 { 79 int state; 80 81 state = 0xff; /* XXX unknown */ 82 83 if (battp->state & ACPI_BATT_STAT_DISCHARG) { 84 if (battp->cap >= 50) 85 state = 0; /* high */ 86 else 87 state = 1; /* low */ 88 } 89 if (battp->state & ACPI_BATT_STAT_CRITICAL) 90 state = 2; /* critical */ 91 if (battp->state & ACPI_BATT_STAT_CHARGING) 92 state = 3; /* charging */ 93 94 /* If still unknown, determine it based on the battery capacity. */ 95 if (state == 0xff) { 96 if (battp->cap >= 50) 97 state = 0; /* high */ 98 else 99 state = 1; /* low */ 100 } 101 102 return (state); 103 } 104 105 static int 106 acpi_capm_convert_battflags(struct acpi_battinfo *battp) 107 { 108 int flags; 109 110 flags = 0; 111 112 if (battp->cap >= 50) 113 flags |= APM_BATT_HIGH; 114 else { 115 if (battp->state & ACPI_BATT_STAT_CRITICAL) 116 flags |= APM_BATT_CRITICAL; 117 else 118 flags |= APM_BATT_LOW; 119 } 120 if (battp->state & ACPI_BATT_STAT_CHARGING) 121 flags |= APM_BATT_CHARGING; 122 if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) 123 flags = APM_BATT_NOT_PRESENT; 124 125 return (flags); 126 } 127 128 static int 129 acpi_capm_get_info(apm_info_t aip) 130 { 131 int acline; 132 struct acpi_battinfo batt; 133 134 aip->ai_infoversion = 1; 135 aip->ai_major = 1; 136 aip->ai_minor = 2; 137 aip->ai_status = apm_softc.active; 138 aip->ai_capabilities= 0xff00; /* XXX unknown */ 139 140 if (acpi_acad_get_acline(&acline)) 141 aip->ai_acline = 0xff; /* unknown */ 142 else 143 aip->ai_acline = acline; /* on/off */ 144 145 if (acpi_battery_get_battinfo(NULL, &batt)) { 146 aip->ai_batt_stat = 0xff; /* unknown */ 147 aip->ai_batt_life = 0xff; /* unknown */ 148 aip->ai_batt_time = -1; /* unknown */ 149 aip->ai_batteries = 0; 150 } else { 151 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt); 152 aip->ai_batt_life = batt.cap; 153 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 154 aip->ai_batteries = acpi_battery_get_units(); 155 } 156 157 return (0); 158 } 159 160 static int 161 acpi_capm_get_pwstatus(apm_pwstatus_t app) 162 { 163 device_t dev; 164 int acline, unit, error; 165 struct acpi_battinfo batt; 166 167 if (app->ap_device != PMDV_ALLDEV && 168 (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) 169 return (1); 170 171 if (app->ap_device == PMDV_ALLDEV) 172 error = acpi_battery_get_battinfo(NULL, &batt); 173 else { 174 unit = app->ap_device - PMDV_BATT0; 175 dev = devclass_get_device(devclass_find("battery"), unit); 176 if (dev != NULL) 177 error = acpi_battery_get_battinfo(dev, &batt); 178 else 179 error = ENXIO; 180 } 181 if (error) 182 return (1); 183 184 app->ap_batt_stat = acpi_capm_convert_battstate(&batt); 185 app->ap_batt_flag = acpi_capm_convert_battflags(&batt); 186 app->ap_batt_life = batt.cap; 187 app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60; 188 189 if (acpi_acad_get_acline(&acline)) 190 app->ap_acline = 0xff; /* unknown */ 191 else 192 app->ap_acline = acline; /* on/off */ 193 194 return (0); 195 } 196 197 static int 198 apmopen(struct dev_open_args *ap) 199 { 200 return (0); 201 } 202 203 static int 204 apmclose(struct dev_close_args *ap) 205 { 206 return (0); 207 } 208 209 static int 210 apmioctl(struct dev_ioctl_args *ap) 211 { 212 int error = 0; 213 struct acpi_softc *acpi_sc; 214 struct apm_info info; 215 apm_info_old_t aiop; 216 217 acpi_sc = device_get_softc(acpi_dev); 218 219 switch (ap->a_cmd) { 220 case APMIO_SUSPEND: 221 if ((ap->a_fflag & FWRITE) == 0) 222 return (EPERM); 223 if (apm_softc.active) 224 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx); 225 else 226 error = EINVAL; 227 break; 228 case APMIO_STANDBY: 229 if ((ap->a_fflag & FWRITE) == 0) 230 return (EPERM); 231 if (apm_softc.active) 232 acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx); 233 else 234 error = EINVAL; 235 break; 236 case APMIO_GETINFO_OLD: 237 if (acpi_capm_get_info(&info)) 238 error = ENXIO; 239 aiop = (apm_info_old_t)ap->a_data; 240 aiop->ai_major = info.ai_major; 241 aiop->ai_minor = info.ai_minor; 242 aiop->ai_acline = info.ai_acline; 243 aiop->ai_batt_stat = info.ai_batt_stat; 244 aiop->ai_batt_life = info.ai_batt_life; 245 aiop->ai_status = info.ai_status; 246 break; 247 case APMIO_GETINFO: 248 if (acpi_capm_get_info((apm_info_t)ap->a_data)) 249 error = ENXIO; 250 break; 251 case APMIO_GETPWSTATUS: 252 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data)) 253 error = ENXIO; 254 break; 255 case APMIO_ENABLE: 256 if ((ap->a_fflag & FWRITE) == 0) 257 return (EPERM); 258 apm_softc.active = 1; 259 break; 260 case APMIO_DISABLE: 261 if ((ap->a_fflag & FWRITE) == 0) 262 return (EPERM); 263 apm_softc.active = 0; 264 break; 265 case APMIO_HALTCPU: 266 break; 267 case APMIO_NOTHALTCPU: 268 break; 269 case APMIO_DISPLAY: 270 if ((ap->a_fflag & FWRITE) == 0) 271 return (EPERM); 272 break; 273 case APMIO_BIOS: 274 if ((ap->a_fflag & FWRITE) == 0) 275 return (EPERM); 276 bzero(ap->a_data, sizeof(struct apm_bios_arg)); 277 break; 278 default: 279 error = EINVAL; 280 break; 281 } 282 283 return (error); 284 } 285 286 static int 287 apmwrite(struct dev_write_args *ap) 288 { 289 return (ap->a_uio->uio_resid); 290 } 291 292 static void apmfilter_detach(struct knote *); 293 static int apmfilter(struct knote *, long); 294 295 static struct filterops apmfilterops = 296 { FILTEROP_ISFD, NULL, apmfilter_detach, apmfilter }; 297 298 static int 299 apmkqfilter(struct dev_kqfilter_args *ap) 300 { 301 struct knote *kn = ap->a_kn; 302 303 kn->kn_fop = &apmfilterops; 304 ap->a_result = 0; 305 return (0); 306 } 307 308 static void 309 apmfilter_detach(struct knote *kn) {} 310 311 static int 312 apmfilter(struct knote *kn, long hint) 313 { 314 return (0); 315 } 316 317 static void 318 acpi_capm_init(struct acpi_softc *sc) 319 { 320 make_dev(&apm_ops, 0, 0, 5, 0664, "apm"); 321 make_dev(&apm_ops, 8, 0, 5, 0664, "apm"); 322 kprintf("Warning: ACPI is disabling APM's device. You can't run both\n"); 323 } 324 325 int 326 acpi_machdep_init(device_t dev) 327 { 328 struct acpi_softc *sc; 329 int intr_model; 330 331 acpi_dev = dev; 332 sc = device_get_softc(acpi_dev); 333 334 /* 335 * XXX: Prevent the PnP BIOS code from interfering with 336 * our own scan of ISA devices. 337 */ 338 #if 0 339 PnPBIOStable = NULL; 340 #endif 341 342 acpi_capm_init(sc); 343 344 acpi_install_wakeup_handler(sc); 345 346 if (ioapic_enable) 347 intr_model = ACPI_INTR_APIC; 348 else 349 intr_model = ACPI_INTR_PIC; 350 351 if (intr_model != ACPI_INTR_PIC) 352 acpi_SetIntrModel(intr_model); 353 354 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, 355 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 356 "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0, 357 "Call the VESA reset BIOS vector on the resume path"); 358 359 return (0); 360 } 361