sys/platform/pc32/acpica5/acpi_machdep.c

   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  * $DragonFly: src/sys/platform/pc32/acpica5/acpi_machdep.c,v 1.14 2008/09/29 06:59:45 hasso Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/bus.h>
  32 #include <sys/conf.h>
  33 #include <sys/device.h>
  34 #include <sys/fcntl.h>
  35 #include <sys/kernel.h>
  36 #include <sys/sysctl.h>
  37 #include <sys/uio.h>
  38
  39 #include "acpi.h"
  40 #include <dev/acpica5/acpivar.h>
  41 #include <dev/acpica5/acpiio.h>
  42
  43 static device_t acpi_dev;
  44
  45 /*
  46  * APM driver emulation
  47  */
  48
  49 #include <sys/event.h>
  50
  51 #include <machine/apm_bios.h>
  52 #include <machine/pc/bios.h>
  53 #include <machine_base/apm/apm.h>
  54
  55 uint32_t acpi_reset_video = 1;
  56 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
  57
  58 #ifdef APIC_IO
  59 static int intr_model = ACPI_INTR_APIC;
  60 #else
  61 static int intr_model = ACPI_INTR_PIC;
  62 #endif
  63 static struct apm_softc apm_softc;
  64
  65 static d_open_t apmopen;
  66 static d_close_t apmclose;
  67 static d_write_t apmwrite;
  68 static d_ioctl_t apmioctl;
  69 static d_kqfilter_t apmkqfilter;
  70
  71 #define CDEV_MAJOR 39
  72 static struct dev_ops apm_ops = {
  73         { "apm", CDEV_MAJOR, D_KQFILTER },
  74         .d_open = apmopen,
  75         .d_close = apmclose,
  76         .d_write = apmwrite,
  77         .d_ioctl = apmioctl,
  78         .d_kqfilter = apmkqfilter
  79 };
  80
  81 static int
  82 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
  83 {
  84         int     state;
  85
  86         state = 0xff;   /* XXX unknown */
  87
  88         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
  89                 if (battp->cap >= 50)
  90                         state = 0;      /* high */
  91                 else
  92                         state = 1;      /* low */
  93         }
  94         if (battp->state & ACPI_BATT_STAT_CRITICAL)
  95                 state = 2;              /* critical */
  96         if (battp->state & ACPI_BATT_STAT_CHARGING)
  97                 state = 3;              /* charging */
  98
  99         /* If still unknown, determine it based on the battery capacity. */
 100         if (state == 0xff) {
 101                 if (battp->cap >= 50)
 102                         state = 0;      /* high */
 103                 else
 104                         state = 1;      /* low */
 105         }
 106
 107         return (state);
 108 }
 109
 110 static int
 111 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
 112 {
 113         int     flags;
 114
 115         flags = 0;
 116
 117         if (battp->cap >= 50)
 118                 flags |= APM_BATT_HIGH;
 119         else {
 120                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
 121                         flags |= APM_BATT_CRITICAL;
 122                 else
 123                         flags |= APM_BATT_LOW;
 124         }
 125         if (battp->state & ACPI_BATT_STAT_CHARGING)
 126                 flags |= APM_BATT_CHARGING;
 127         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
 128                 flags = APM_BATT_NOT_PRESENT;
 129
 130         return (flags);
 131 }
 132
 133 static int
 134 acpi_capm_get_info(apm_info_t aip)
 135 {
 136         int     acline;
 137         struct  acpi_battinfo batt;
 138
 139         aip->ai_infoversion = 1;
 140         aip->ai_major       = 1;
 141         aip->ai_minor       = 2;
 142         aip->ai_status      = apm_softc.active;
 143         aip->ai_capabilities= 0xff00;   /* XXX unknown */
 144
 145         if (acpi_acad_get_acline(&acline))
 146                 aip->ai_acline = 0xff;          /* unknown */
 147         else
 148                 aip->ai_acline = acline;        /* on/off */
 149
 150         if (acpi_battery_get_battinfo(NULL, &batt)) {
 151                 aip->ai_batt_stat = 0xff;       /* unknown */
 152                 aip->ai_batt_life = 0xff;       /* unknown */
 153                 aip->ai_batt_time = -1;         /* unknown */
 154                 aip->ai_batteries = 0;
 155         } else {
 156                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
 157                 aip->ai_batt_life = batt.cap;
 158                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
 159                 aip->ai_batteries = acpi_battery_get_units();
 160         }
 161
 162         return (0);
 163 }
 164
 165 static int
 166 acpi_capm_get_pwstatus(apm_pwstatus_t app)
 167 {
 168         device_t dev;
 169         int     acline, unit, error;
 170         struct  acpi_battinfo batt;
 171
 172         if (app->ap_device != PMDV_ALLDEV &&
 173             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
 174                 return (1);
 175
 176         if (app->ap_device == PMDV_ALLDEV)
 177                 error = acpi_battery_get_battinfo(NULL, &batt);
 178         else {
 179                 unit = app->ap_device - PMDV_BATT0;
 180                 dev = devclass_get_device(devclass_find("battery"), unit);
 181                 if (dev != NULL)
 182                         error = acpi_battery_get_battinfo(dev, &batt);
 183                 else
 184                         error = ENXIO;
 185         }
 186         if (error)
 187                 return (1);
 188
 189         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
 190         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
 191         app->ap_batt_life = batt.cap;
 192         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
 193
 194         if (acpi_acad_get_acline(&acline))
 195                 app->ap_acline = 0xff;          /* unknown */
 196         else
 197                 app->ap_acline = acline;        /* on/off */
 198
 199         return (0);
 200 }
 201
 202 static int
 203 apmopen(struct dev_open_args *ap)
 204 {
 205         return (0);
 206 }
 207
 208 static int
 209 apmclose(struct dev_close_args *ap)
 210 {
 211         return (0);
 212 }
 213
 214 static int
 215 apmioctl(struct dev_ioctl_args *ap)
 216 {
 217         int     error = 0;
 218         struct  acpi_softc *acpi_sc;
 219         struct apm_info info;
 220         apm_info_old_t aiop;
 221
 222         acpi_sc = device_get_softc(acpi_dev);
 223
 224         switch (ap->a_cmd) {
 225         case APMIO_SUSPEND:
 226                 if ((ap->a_fflag & FWRITE) == 0)
 227                         return (EPERM);
 228                 if (apm_softc.active)
 229                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
 230                 else
 231                         error = EINVAL;
 232                 break;
 233         case APMIO_STANDBY:
 234                 if ((ap->a_fflag & FWRITE) == 0)
 235                         return (EPERM);
 236                 if (apm_softc.active)
 237                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
 238                 else
 239                         error = EINVAL;
 240                 break;
 241         case APMIO_GETINFO_OLD:
 242                 if (acpi_capm_get_info(&info))
 243                         error = ENXIO;
 244                 aiop = (apm_info_old_t)ap->a_data;
 245                 aiop->ai_major = info.ai_major;
 246                 aiop->ai_minor = info.ai_minor;
 247                 aiop->ai_acline = info.ai_acline;
 248                 aiop->ai_batt_stat = info.ai_batt_stat;
 249                 aiop->ai_batt_life = info.ai_batt_life;
 250                 aiop->ai_status = info.ai_status;
 251                 break;
 252         case APMIO_GETINFO:
 253                 if (acpi_capm_get_info((apm_info_t)ap->a_data))
 254                         error = ENXIO;
 255                 break;
 256         case APMIO_GETPWSTATUS:
 257                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)ap->a_data))
 258                         error = ENXIO;
 259                 break;
 260         case APMIO_ENABLE:
 261                 if ((ap->a_fflag & FWRITE) == 0)
 262                         return (EPERM);
 263                 apm_softc.active = 1;
 264                 break;
 265         case APMIO_DISABLE:
 266                 if ((ap->a_fflag & FWRITE) == 0)
 267                         return (EPERM);
 268                 apm_softc.active = 0;
 269                 break;
 270         case APMIO_HALTCPU:
 271                 break;
 272         case APMIO_NOTHALTCPU:
 273                 break;
 274         case APMIO_DISPLAY:
 275                 if ((ap->a_fflag & FWRITE) == 0)
 276                         return (EPERM);
 277                 break;
 278         case APMIO_BIOS:
 279                 if ((ap->a_fflag & FWRITE) == 0)
 280                         return (EPERM);
 281                 bzero(ap->a_data, sizeof(struct apm_bios_arg));
 282                 break;
 283         default:
 284                 error = EINVAL;
 285                 break;
 286         }
 287
 288         return (error);
 289 }
 290
 291 static int
 292 apmwrite(struct dev_write_args *ap)
 293 {
 294         return (ap->a_uio->uio_resid);
 295 }
 296
 297 static void apmfilter_detach(struct knote *);
 298 static int apmfilter(struct knote *, long);
 299
 300 static struct filterops apmfilterops =
 301         { 1, NULL, apmfilter_detach, apmfilter };
 302
 303 static int
 304 apmkqfilter(struct dev_kqfilter_args *ap)
 305 {
 306         struct knote *kn = ap->a_kn;
 307
 308         kn->kn_fop = &apmfilterops;
 309         ap->a_result = 0;
 310         return (0);
 311 }
 312
 313 static void
 314 apmfilter_detach(struct knote *kn) {}
 315
 316 static int
 317 apmfilter(struct knote *kn, long hint)
 318 {
 319         return (0);
 320 }
 321
 322 static void
 323 acpi_capm_init(struct acpi_softc *sc)
 324 {
 325         make_dev(&apm_ops, 0, 0, 5, 0664, "apm");
 326         make_dev(&apm_ops, 8, 0, 5, 0664, "apm");
 327         kprintf("Warning: ACPI is disabling APM's device.  You can't run both\n");
 328 }
 329
 330 int
 331 acpi_machdep_init(device_t dev)
 332 {
 333         struct  acpi_softc *sc;
 334
 335         acpi_dev = dev;
 336         sc = device_get_softc(acpi_dev);
 337
 338         /*
 339          * XXX: Prevent the PnP BIOS code from interfering with
 340          * our own scan of ISA devices.
 341          */
 342         PnPBIOStable = NULL;
 343
 344         acpi_capm_init(sc);
 345
 346         acpi_install_wakeup_handler(sc);
 347
 348         if (intr_model == ACPI_INTR_PIC)
 349                 BUS_CONFIG_INTR(dev, dev, AcpiGbl_FADT.SciInterrupt,
 350                     INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
 351         else
 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
 362 void
 363 acpi_SetDefaultIntrModel(int model)
 364 {
 365
 366         intr_model = model;
 367 }