acpi_machdep.c

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    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: releng/5.0/sys/i386/acpica/acpi_machdep.c 107144 2002-11-21 20:55:22Z jhb $
   27  */
   28 
   29 #include <sys/param.h>
   30 #include <sys/bus.h>
   31 #include <sys/conf.h>
   32 #include <sys/fcntl.h>
   33 #include <sys/uio.h>
   34 
   35 #include "acpi.h"
   36 
   37 #include <dev/acpica/acpivar.h>
   38 #include <dev/acpica/acpiio.h>
   39 
   40 static device_t acpi_dev;
   41 
   42 /*
   43  * APM driver emulation 
   44  */
   45 
   46 #if __FreeBSD_version < 500000
   47 #include <sys/select.h>
   48 #else
   49 #include <sys/selinfo.h>
   50 #endif
   51 
   52 #include <machine/apm_bios.h>
   53 #include <machine/pc/bios.h>
   54 
   55 #include <i386/apm/apm.h>
   56 
   57 static struct apm_softc apm_softc;
   58 
   59 static d_open_t apmopen;
   60 static d_close_t apmclose;
   61 static d_write_t apmwrite;
   62 static d_ioctl_t apmioctl;
   63 static d_poll_t apmpoll;
   64 
   65 #define CDEV_MAJOR 39
   66 static struct cdevsw apm_cdevsw = {
   67         /* open */      apmopen,
   68         /* close */     apmclose,
   69         /* read */      noread,
   70         /* write */     apmwrite,
   71         /* ioctl */     apmioctl,
   72         /* poll */      apmpoll,
   73         /* mmap */      nommap,
   74         /* strategy */  nostrategy,
   75         /* name */      "apm",
   76         /* maj */       CDEV_MAJOR,
   77         /* dump */      nodump,
   78         /* psize */     nopsize,
   79         /* flags */     0,
   80 };
   81 
   82 static int
   83 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
   84 {
   85         int     state;
   86 
   87         state = 0xff;   /* XXX unknown */
   88 
   89         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
   90                 if (battp->cap >= 50) {
   91                         state = 0;      /* high */
   92                 } else {
   93                         state = 1;      /* low */
   94                 }
   95         }
   96         if (battp->state & ACPI_BATT_STAT_CRITICAL) {
   97                 state = 2;              /* critical */
   98         }
   99         if (battp->state & ACPI_BATT_STAT_CHARGING) {
  100                 state = 3;              /* charging */
  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         }
  121         if (battp->state & ACPI_BATT_STAT_CHARGING) {
  122                 flags |= APM_BATT_CHARGING;
  123         }
  124         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT) {
  125                 flags = APM_BATT_NOT_PRESENT;
  126         }
  127 
  128         return (flags);
  129 }
  130 
  131 static int
  132 acpi_capm_get_info(apm_info_t aip)
  133 {
  134         int     acline;
  135         struct  acpi_battinfo batt;
  136 
  137         aip->ai_infoversion = 1;
  138         aip->ai_major       = 1;
  139         aip->ai_minor       = 2;
  140         aip->ai_status      = apm_softc.active;
  141         aip->ai_capabilities= 0xff00;   /* XXX unknown */
  142 
  143         if (acpi_acad_get_acline(&acline)) {
  144                 aip->ai_acline = 0xff;          /* unknown */
  145         } else {
  146                 aip->ai_acline = acline;        /* on/off */
  147         }
  148 
  149         if (acpi_battery_get_battinfo(-1, &batt)) {
  150                 aip->ai_batt_stat = 0xff;       /* unknown */
  151                 aip->ai_batt_life = 0xff;       /* unknown */
  152                 aip->ai_batt_time = -1;         /* unknown */
  153                 aip->ai_batteries = 0;
  154         } else {
  155                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
  156                 aip->ai_batt_life = batt.cap;
  157                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  158                 aip->ai_batteries = acpi_battery_get_units();
  159         }
  160 
  161         return (0);
  162 }
  163 
  164 static int
  165 acpi_capm_get_pwstatus(apm_pwstatus_t app)
  166 {
  167         int     batt_unit;
  168         int     acline;
  169         struct  acpi_battinfo batt;
  170 
  171         if (app->ap_device != PMDV_ALLDEV &&
  172             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
  173                 return (1);
  174         }
  175 
  176         if (app->ap_device == PMDV_ALLDEV) {
  177                 batt_unit = -1;                 /* all units */
  178         } else {
  179                 batt_unit = app->ap_device - PMDV_BATT0;
  180         }
  181 
  182         if (acpi_battery_get_battinfo(batt_unit, &batt)) {
  183                 return (1);
  184         }
  185 
  186         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
  187         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
  188         app->ap_batt_life = batt.cap;
  189         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  190 
  191         if (acpi_acad_get_acline(&acline)) {
  192                 app->ap_acline = 0xff;          /* unknown */
  193         } else {
  194                 app->ap_acline = acline;        /* on/off */
  195         }
  196 
  197         return (0);
  198 }
  199 
  200 static int
  201 apmopen(dev_t dev, int flag, int fmt, d_thread_t *td)
  202 {
  203         return (0);
  204 }
  205 
  206 static int
  207 apmclose(dev_t dev, int flag, int fmt, d_thread_t *td)
  208 {
  209         return (0);
  210 }
  211 
  212 static int
  213 apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
  214 {
  215         int     error = 0;
  216         struct  acpi_softc *acpi_sc;
  217         struct apm_info info;
  218         apm_info_old_t aiop;
  219 
  220         if ((acpi_sc = device_get_softc(acpi_dev)) == NULL) {
  221                 return (ENXIO);
  222         }
  223 
  224         switch (cmd) {
  225         case APMIO_SUSPEND:
  226                 if (!(flag & FWRITE))
  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 
  234         case APMIO_STANDBY:
  235                 if (!(flag & FWRITE))
  236                         return (EPERM);
  237                 if (apm_softc.active)
  238                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
  239                 else
  240                         error = EINVAL;
  241                 break;
  242 
  243         case APMIO_GETINFO_OLD:
  244                 if (acpi_capm_get_info(&info))
  245                         error = ENXIO;
  246                 aiop = (apm_info_old_t)addr;
  247                 aiop->ai_major = info.ai_major;
  248                 aiop->ai_minor = info.ai_minor;
  249                 aiop->ai_acline = info.ai_acline;
  250                 aiop->ai_batt_stat = info.ai_batt_stat;
  251                 aiop->ai_batt_life = info.ai_batt_life;
  252                 aiop->ai_status = info.ai_status;
  253                 break;
  254 
  255         case APMIO_GETINFO:
  256                 if (acpi_capm_get_info((apm_info_t)addr))
  257                         error = ENXIO;
  258 
  259                 break;
  260 
  261         case APMIO_GETPWSTATUS:
  262                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
  263                         error = ENXIO;
  264                 break;
  265 
  266         case APMIO_ENABLE:
  267                 if (!(flag & FWRITE))
  268                         return (EPERM);
  269                 apm_softc.active = 1;
  270                 break;
  271 
  272         case APMIO_DISABLE:
  273                 if (!(flag & FWRITE))
  274                         return (EPERM);
  275                 apm_softc.active = 0;
  276                 break;
  277 
  278         case APMIO_HALTCPU:
  279                 break;
  280 
  281         case APMIO_NOTHALTCPU:
  282                 break;
  283 
  284         case APMIO_DISPLAY:
  285                 if (!(flag & FWRITE))
  286                         return (EPERM);
  287                 break;
  288 
  289         case APMIO_BIOS:
  290                 if (!(flag & FWRITE))
  291                         return (EPERM);
  292                 bzero(addr, sizeof(struct apm_bios_arg));
  293                 break;
  294 
  295         default:
  296                 error = EINVAL;
  297                 break;
  298         }
  299 
  300         return (error);
  301 }
  302 
  303 static int
  304 apmwrite(dev_t dev, struct uio *uio, int ioflag)
  305 {
  306 
  307         return (uio->uio_resid);
  308 }
  309 
  310 static int
  311 apmpoll(dev_t dev, int events, d_thread_t *td)
  312 {
  313         return (0);
  314 }
  315 
  316 static void
  317 acpi_capm_init(struct acpi_softc *sc)
  318 {
  319 
  320         make_dev(&apm_cdevsw, 0, 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         if ((sc = device_get_softc(acpi_dev)) == NULL) {
  330                 return (ENXIO);
  331         }
  332 
  333         /*
  334          * XXX: Prevent the PnP BIOS code from interfering with
  335          * our own scan of ISA devices.
  336          */
  337         PnPBIOStable = NULL;
  338 
  339         acpi_capm_init(sc);
  340 
  341         acpi_install_wakeup_handler(sc);
  342 
  343 #ifdef SMP
  344         acpi_SetIntrModel(ACPI_INTR_APIC);
  345 #endif
  346         return (0);
  347 }
  348
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FreeBSD/Linux Kernel Cross Reference sys/i386/acpica/acpi_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/i386/acpica/acpi_machdep.c
