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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/5.2/sys/i386/acpica/acpi_machdep.c 121830 2003-11-01 00:18:29Z njl $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/bus.h>
   32 #include <sys/conf.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 
   40 #include <dev/acpica/acpivar.h>
   41 #include <dev/acpica/acpiio.h>
   42 
   43 static device_t acpi_dev;
   44 
   45 /*
   46  * APM driver emulation 
   47  */
   48 
   49 #if __FreeBSD_version < 500000
   50 #include <sys/select.h>
   51 #else
   52 #include <sys/selinfo.h>
   53 #endif
   54 
   55 #include <machine/apm_bios.h>
   56 #include <machine/pc/bios.h>
   57 
   58 #if __FreeBSD_version < 500000
   59 #include <i386/apm/apm.h>
   60 #else
   61 #include <i386/bios/apm.h>
   62 #endif
   63 
   64 u_int32_t acpi_reset_video = 1;
   65 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
   66 
   67 static struct apm_softc apm_softc;
   68 
   69 static d_open_t apmopen;
   70 static d_close_t apmclose;
   71 static d_write_t apmwrite;
   72 static d_ioctl_t apmioctl;
   73 static d_poll_t apmpoll;
   74 
   75 #define CDEV_MAJOR 39
   76 static struct cdevsw apm_cdevsw = {
   77         .d_open =       apmopen,
   78         .d_close =      apmclose,
   79         .d_write =      apmwrite,
   80         .d_ioctl =      apmioctl,
   81         .d_poll =       apmpoll,
   82         .d_name =       "apm",
   83         .d_maj =        CDEV_MAJOR,
   84 };
   85 
   86 static int intr_model = ACPI_INTR_PIC;
   87 
   88 static int
   89 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
   90 {
   91         int     state;
   92 
   93         state = 0xff;   /* XXX unknown */
   94 
   95         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
   96                 if (battp->cap >= 50)
   97                         state = 0;      /* high */
   98                 else
   99                         state = 1;      /* low */
  100         }
  101         if (battp->state & ACPI_BATT_STAT_CRITICAL)
  102                 state = 2;              /* critical */
  103         if (battp->state & ACPI_BATT_STAT_CHARGING)
  104                 state = 3;              /* charging */
  105 
  106         /* If still unknown, determine it based on the battery capacity. */
  107         if (state == 0xff) {
  108                 if (battp->cap >= 50) {
  109                         state = 0;      /* high */
  110                 } else {
  111                         state = 1;      /* low */
  112                 }
  113         }
  114 
  115         return (state);
  116 }
  117 
  118 static int
  119 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
  120 {
  121         int     flags;
  122 
  123         flags = 0;
  124 
  125         if (battp->cap >= 50) {
  126                 flags |= APM_BATT_HIGH;
  127         } else {
  128                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
  129                         flags |= APM_BATT_CRITICAL;
  130                 else
  131                         flags |= APM_BATT_LOW;
  132         }
  133         if (battp->state & ACPI_BATT_STAT_CHARGING)
  134                 flags |= APM_BATT_CHARGING;
  135         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
  136                 flags = APM_BATT_NOT_PRESENT;
  137 
  138         return (flags);
  139 }
  140 
  141 static int
  142 acpi_capm_get_info(apm_info_t aip)
  143 {
  144         int     acline;
  145         struct  acpi_battinfo batt;
  146 
  147         aip->ai_infoversion = 1;
  148         aip->ai_major       = 1;
  149         aip->ai_minor       = 2;
  150         aip->ai_status      = apm_softc.active;
  151         aip->ai_capabilities= 0xff00;   /* XXX unknown */
  152 
  153         if (acpi_acad_get_acline(&acline))
  154                 aip->ai_acline = 0xff;          /* unknown */
  155         else
  156                 aip->ai_acline = acline;        /* on/off */
  157 
  158         if (acpi_battery_get_battinfo(-1, &batt)) {
  159                 aip->ai_batt_stat = 0xff;       /* unknown */
  160                 aip->ai_batt_life = 0xff;       /* unknown */
  161                 aip->ai_batt_time = -1;         /* unknown */
  162                 aip->ai_batteries = 0;
  163         } else {
  164                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
  165                 aip->ai_batt_life = batt.cap;
  166                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  167                 aip->ai_batteries = acpi_battery_get_units();
  168         }
  169 
  170         return (0);
  171 }
  172 
  173 static int
  174 acpi_capm_get_pwstatus(apm_pwstatus_t app)
  175 {
  176         int     batt_unit;
  177         int     acline;
  178         struct  acpi_battinfo batt;
  179 
  180         if (app->ap_device != PMDV_ALLDEV &&
  181             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL)) {
  182                 return (1);
  183         }
  184 
  185         if (app->ap_device == PMDV_ALLDEV)
  186                 batt_unit = -1;                 /* all units */
  187         else
  188                 batt_unit = app->ap_device - PMDV_BATT0;
  189 
  190         if (acpi_battery_get_battinfo(batt_unit, &batt))
  191                 return (1);
  192 
  193         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
  194         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
  195         app->ap_batt_life = batt.cap;
  196         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  197 
  198         if (acpi_acad_get_acline(&acline))
  199                 app->ap_acline = 0xff;          /* unknown */
  200         else
  201                 app->ap_acline = acline;        /* on/off */
  202 
  203         return (0);
  204 }
  205 
  206 static int
  207 apmopen(dev_t dev, int flag, int fmt, d_thread_t *td)
  208 {
  209         return (0);
  210 }
  211 
  212 static int
  213 apmclose(dev_t dev, int flag, int fmt, d_thread_t *td)
  214 {
  215         return (0);
  216 }
  217 
  218 static int
  219 apmioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
  220 {
  221         int     error = 0;
  222         struct  acpi_softc *acpi_sc;
  223         struct apm_info info;
  224         apm_info_old_t aiop;
  225 
  226         if ((acpi_sc = device_get_softc(acpi_dev)) == NULL)
  227                 return (ENXIO);
  228 
  229         switch (cmd) {
  230         case APMIO_SUSPEND:
  231                 if ((flag & FWRITE) == 0)
  232                         return (EPERM);
  233                 if (apm_softc.active)
  234                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
  235                 else
  236                         error = EINVAL;
  237                 break;
  238         case APMIO_STANDBY:
  239                 if ((flag & FWRITE) == 0)
  240                         return (EPERM);
  241                 if (apm_softc.active)
  242                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
  243                 else
  244                         error = EINVAL;
  245                 break;
  246         case APMIO_GETINFO_OLD:
  247                 if (acpi_capm_get_info(&info))
  248                         error = ENXIO;
  249                 aiop = (apm_info_old_t)addr;
  250                 aiop->ai_major = info.ai_major;
  251                 aiop->ai_minor = info.ai_minor;
  252                 aiop->ai_acline = info.ai_acline;
  253                 aiop->ai_batt_stat = info.ai_batt_stat;
  254                 aiop->ai_batt_life = info.ai_batt_life;
  255                 aiop->ai_status = info.ai_status;
  256                 break;
  257         case APMIO_GETINFO:
  258                 if (acpi_capm_get_info((apm_info_t)addr))
  259                         error = ENXIO;
  260                 break;
  261         case APMIO_GETPWSTATUS:
  262                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
  263                         error = ENXIO;
  264                 break;
  265         case APMIO_ENABLE:
  266                 if ((flag & FWRITE) == 0)
  267                         return (EPERM);
  268                 apm_softc.active = 1;
  269                 break;
  270         case APMIO_DISABLE:
  271                 if ((flag & FWRITE) == 0)
  272                         return (EPERM);
  273                 apm_softc.active = 0;
  274                 break;
  275         case APMIO_HALTCPU:
  276                 break;
  277         case APMIO_NOTHALTCPU:
  278                 break;
  279         case APMIO_DISPLAY:
  280                 if ((flag & FWRITE) == 0)
  281                         return (EPERM);
  282                 break;
  283         case APMIO_BIOS:
  284                 if ((flag & FWRITE) == 0)
  285                         return (EPERM);
  286                 bzero(addr, sizeof(struct apm_bios_arg));
  287                 break;
  288         default:
  289                 error = EINVAL;
  290                 break;
  291         }
  292 
  293         return (error);
  294 }
  295 
  296 static int
  297 apmwrite(dev_t dev, struct uio *uio, int ioflag)
  298 {
  299         return (uio->uio_resid);
  300 }
  301 
  302 static int
  303 apmpoll(dev_t dev, int events, d_thread_t *td)
  304 {
  305         return (0);
  306 }
  307 
  308 static void
  309 acpi_capm_init(struct acpi_softc *sc)
  310 {
  311         make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
  312 }
  313 
  314 int
  315 acpi_machdep_init(device_t dev)
  316 {
  317         struct  acpi_softc *sc;
  318 
  319         acpi_dev = dev;
  320         if ((sc = device_get_softc(acpi_dev)) == NULL)
  321                 return (ENXIO);
  322 
  323         /*
  324          * XXX: Prevent the PnP BIOS code from interfering with
  325          * our own scan of ISA devices.
  326          */
  327         PnPBIOStable = NULL;
  328 
  329         acpi_capm_init(sc);
  330 
  331         acpi_install_wakeup_handler(sc);
  332 
  333         if (intr_model != ACPI_INTR_PIC)
  334                 acpi_SetIntrModel(intr_model);
  335 
  336         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
  337             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
  338             "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
  339             "Call the VESA reset BIOS vector on the resume path");
  340 
  341         return (0);
  342 }
  343 
  344 void
  345 acpi_SetDefaultIntrModel(int model)
  346 {
  347 
  348         intr_model = model;
  349 }
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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
