sys/platform/pc64/acpica/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  */
  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