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("$FreeBSD$");
   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 #include <vm/vm.h>
   38 #include <vm/pmap.h>
   39 
   40 #include "acpi.h"
   41 #include <dev/acpica/acpivar.h>
   42 #include <dev/acpica/acpiio.h>
   43 
   44 /*
   45  * APM driver emulation 
   46  */
   47 
   48 #include <sys/selinfo.h>
   49 
   50 #include <machine/apm_bios.h>
   51 #include <machine/pc/bios.h>
   52 
   53 #include <i386/bios/apm.h>
   54 
   55 uint32_t acpi_reset_video = 1;
   56 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
   57 
   58 static int intr_model = ACPI_INTR_PIC;
   59 static int apm_active;
   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_poll_t apmpoll;
   66 
   67 static struct cdevsw apm_cdevsw = {
   68         .d_version =    D_VERSION,
   69         .d_open =       apmopen,
   70         .d_close =      apmclose,
   71         .d_write =      apmwrite,
   72         .d_ioctl =      apmioctl,
   73         .d_poll =       apmpoll,
   74         .d_name =       "apm",
   75 };
   76 
   77 static int
   78 acpi_capm_convert_battstate(struct  acpi_battinfo *battp)
   79 {
   80         int     state;
   81 
   82         state = APM_UNKNOWN;
   83 
   84         if (battp->state & ACPI_BATT_STAT_DISCHARG) {
   85                 if (battp->cap >= 50)
   86                         state = 0;      /* high */
   87                 else
   88                         state = 1;      /* low */
   89         }
   90         if (battp->state & ACPI_BATT_STAT_CRITICAL)
   91                 state = 2;              /* critical */
   92         if (battp->state & ACPI_BATT_STAT_CHARGING)
   93                 state = 3;              /* charging */
   94 
   95         /* If still unknown, determine it based on the battery capacity. */
   96         if (state == APM_UNKNOWN) {
   97                 if (battp->cap >= 50)
   98                         state = 0;      /* high */
   99                 else
  100                         state = 1;      /* low */
  101         }
  102 
  103         return (state);
  104 }
  105 
  106 static int
  107 acpi_capm_convert_battflags(struct  acpi_battinfo *battp)
  108 {
  109         int     flags;
  110 
  111         flags = 0;
  112 
  113         if (battp->cap >= 50)
  114                 flags |= APM_BATT_HIGH;
  115         else {
  116                 if (battp->state & ACPI_BATT_STAT_CRITICAL)
  117                         flags |= APM_BATT_CRITICAL;
  118                 else
  119                         flags |= APM_BATT_LOW;
  120         }
  121         if (battp->state & ACPI_BATT_STAT_CHARGING)
  122                 flags |= APM_BATT_CHARGING;
  123         if (battp->state == ACPI_BATT_STAT_NOT_PRESENT)
  124                 flags = APM_BATT_NOT_PRESENT;
  125 
  126         return (flags);
  127 }
  128 
  129 static int
  130 acpi_capm_get_info(apm_info_t aip)
  131 {
  132         int     acline;
  133         struct  acpi_battinfo batt;
  134 
  135         aip->ai_infoversion = 1;
  136         aip->ai_major       = 1;
  137         aip->ai_minor       = 2;
  138         aip->ai_status      = apm_active;
  139         aip->ai_capabilities= 0xff00;   /* unknown */
  140 
  141         if (acpi_acad_get_acline(&acline))
  142                 aip->ai_acline = APM_UNKNOWN;   /* unknown */
  143         else
  144                 aip->ai_acline = acline;        /* on/off */
  145 
  146         if (acpi_battery_get_battinfo(-1, &batt)) {
  147                 aip->ai_batt_stat = APM_UNKNOWN;
  148                 aip->ai_batt_life = APM_UNKNOWN;
  149                 aip->ai_batt_time = -1;          /* unknown */
  150                 aip->ai_batteries = ~0U;         /* unknown */
  151         } else {
  152                 aip->ai_batt_stat = acpi_capm_convert_battstate(&batt);
  153                 aip->ai_batt_life = batt.cap;
  154                 aip->ai_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  155                 aip->ai_batteries = acpi_battery_get_units();
  156         }
  157 
  158         return (0);
  159 }
  160 
  161 static int
  162 acpi_capm_get_pwstatus(apm_pwstatus_t app)
  163 {
  164         int     batt_unit;
  165         int     acline;
  166         struct  acpi_battinfo batt;
  167 
  168         if (app->ap_device != PMDV_ALLDEV &&
  169             (app->ap_device < PMDV_BATT0 || app->ap_device > PMDV_BATT_ALL))
  170                 return (1);
  171 
  172         if (app->ap_device == PMDV_ALLDEV)
  173                 batt_unit = -1;                 /* all units */
  174         else
  175                 batt_unit = app->ap_device - PMDV_BATT0;
  176 
  177         if (acpi_battery_get_battinfo(batt_unit, &batt))
  178                 return (1);
  179 
  180         app->ap_batt_stat = acpi_capm_convert_battstate(&batt);
  181         app->ap_batt_flag = acpi_capm_convert_battflags(&batt);
  182         app->ap_batt_life = batt.cap;
  183         app->ap_batt_time = (batt.min == -1) ? -1 : batt.min * 60;
  184 
  185         if (acpi_acad_get_acline(&acline))
  186                 app->ap_acline = APM_UNKNOWN;
  187         else
  188                 app->ap_acline = acline;        /* on/off */
  189 
  190         return (0);
  191 }
  192 
  193 static int
  194 apmopen(struct cdev *dev, int flag, int fmt, d_thread_t *td)
  195 {
  196         return (0);
  197 }
  198 
  199 static int
  200 apmclose(struct cdev *dev, int flag, int fmt, d_thread_t *td)
  201 {
  202         return (0);
  203 }
  204 
  205 static int
  206 apmioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
  207 {
  208         int     error = 0;
  209         struct  acpi_softc *acpi_sc;
  210         struct apm_info info;
  211         apm_info_old_t aiop;
  212 
  213         acpi_sc = devclass_get_softc(devclass_find("acpi"), 0);
  214 
  215         switch (cmd) {
  216         case APMIO_SUSPEND:
  217                 if ((flag & FWRITE) == 0)
  218                         return (EPERM);
  219                 if (apm_active)
  220                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_suspend_sx);
  221                 else
  222                         error = EINVAL;
  223                 break;
  224         case APMIO_STANDBY:
  225                 if ((flag & FWRITE) == 0)
  226                         return (EPERM);
  227                 if (apm_active)
  228                         acpi_SetSleepState(acpi_sc, acpi_sc->acpi_standby_sx);
  229                 else
  230                         error = EINVAL;
  231                 break;
  232         case APMIO_GETINFO_OLD:
  233                 if (acpi_capm_get_info(&info))
  234                         error = ENXIO;
  235                 aiop = (apm_info_old_t)addr;
  236                 aiop->ai_major = info.ai_major;
  237                 aiop->ai_minor = info.ai_minor;
  238                 aiop->ai_acline = info.ai_acline;
  239                 aiop->ai_batt_stat = info.ai_batt_stat;
  240                 aiop->ai_batt_life = info.ai_batt_life;
  241                 aiop->ai_status = info.ai_status;
  242                 break;
  243         case APMIO_GETINFO:
  244                 if (acpi_capm_get_info((apm_info_t)addr))
  245                         error = ENXIO;
  246                 break;
  247         case APMIO_GETPWSTATUS:
  248                 if (acpi_capm_get_pwstatus((apm_pwstatus_t)addr))
  249                         error = ENXIO;
  250                 break;
  251         case APMIO_ENABLE:
  252                 if ((flag & FWRITE) == 0)
  253                         return (EPERM);
  254                 apm_active = 1;
  255                 break;
  256         case APMIO_DISABLE:
  257                 if ((flag & FWRITE) == 0)
  258                         return (EPERM);
  259                 apm_active = 0;
  260                 break;
  261         case APMIO_HALTCPU:
  262                 break;
  263         case APMIO_NOTHALTCPU:
  264                 break;
  265         case APMIO_DISPLAY:
  266                 if ((flag & FWRITE) == 0)
  267                         return (EPERM);
  268                 break;
  269         case APMIO_BIOS:
  270                 if ((flag & FWRITE) == 0)
  271                         return (EPERM);
  272                 bzero(addr, sizeof(struct apm_bios_arg));
  273                 break;
  274         default:
  275                 error = EINVAL;
  276                 break;
  277         }
  278 
  279         return (error);
  280 }
  281 
  282 static int
  283 apmwrite(struct cdev *dev, struct uio *uio, int ioflag)
  284 {
  285         return (uio->uio_resid);
  286 }
  287 
  288 static int
  289 apmpoll(struct cdev *dev, int events, d_thread_t *td)
  290 {
  291         return (0);
  292 }
  293 
  294 static void
  295 acpi_capm_init(struct acpi_softc *sc)
  296 {
  297         make_dev(&apm_cdevsw, 0, 0, 5, 0664, "apm");
  298 }
  299 
  300 int
  301 acpi_machdep_init(device_t dev)
  302 {
  303         struct  acpi_softc *sc;
  304 
  305         sc = devclass_get_softc(devclass_find("acpi"), 0);
  306         acpi_capm_init(sc);
  307 
  308         acpi_install_wakeup_handler(sc);
  309 
  310         if (intr_model == ACPI_INTR_PIC)
  311                 BUS_CONFIG_INTR(dev, AcpiGbl_FADT->SciInt, INTR_TRIGGER_LEVEL,
  312                     INTR_POLARITY_LOW);
  313         else
  314                 acpi_SetIntrModel(intr_model);
  315 
  316         SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
  317             SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
  318             "reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_reset_video, 0,
  319             "Call the VESA reset BIOS vector on the resume path");
  320 
  321         return (0);
  322 }
  323 
  324 void
  325 acpi_SetDefaultIntrModel(int model)
  326 {
  327 
  328         intr_model = model;
  329 }
  330 
  331 /* Check BIOS date.  If 1998 or older, disable ACPI. */
  332 int
  333 acpi_machdep_quirks(int *quirks)
  334 {
  335         char *va;
  336         int year;
  337 
  338         /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
  339         va = pmap_mapdev(0xffff0, 16);
  340         sscanf(va + 11, "%2d", &year);
  341         pmap_unmapdev((vm_offset_t)va, 16);
  342 
  343         /* 
  344          * Date must be >= 1/1/1999 or we don't trust ACPI.  Note that this
  345          * check must be changed by my 114th birthday.
  346          */
  347         if (year > 90 && year < 99)
  348                 *quirks = ACPI_Q_BROKEN;
  349 
  350         return (0);
  351 }
  352 
  353 void
  354 acpi_cpu_c1()
  355 {
  356         __asm __volatile("sti; hlt");
  357 }
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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
