FreeBSD/Linux Kernel Cross Reference
sys/dev/hpc/pwctl.c

     /*      $NetBSD: pwctl.c,v 1.17 2007/10/19 11:59:43 ad Exp $    */
     
     /*-
      * Copyright (c) 1999-2001
      *         TAKEMURA Shin and PocketBSD Project. All rights reserved.
      * Copyright (c) 2000,2001
      *         SATO Kazumi. All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the PocketBSD project
     *      and its contributors.
     * 4. Neither the name of the project nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: pwctl.c,v 1.17 2007/10/19 11:59:43 ad Exp $");
    
    #ifdef _KERNEL_OPT
    #include "opt_pwctl.h"
    #endif
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    #include <sys/reboot.h>
    
    #include <sys/bus.h>
    #include <machine/config_hook.h>
    #include <machine/platid.h>
    #include <machine/platid_mask.h>
    
    #include <dev/hpc/hpciovar.h>
    
    #include "locators.h"
    
    #ifdef PWCTLDEBUG
    #ifndef PWCTLDEBUG_CONF
    #define PWCTLDEBUG_CONF 0
    #endif
    int     pwctl_debug = PWCTLDEBUG_CONF;
    #define DPRINTF(arg) if (pwctl_debug) printf arg;
    #define VPRINTF(arg) if (bootverbose) printf arg;
    #else
    #define DPRINTF(arg)
    #define VPRINTF(arg) if (bootverbose) printf arg;
    #endif
    
    struct pwctl_softc {
            struct device sc_dev;
            hpcio_chip_t sc_hc;
            int sc_port;
            long sc_id;
            int sc_on, sc_off;
            config_hook_tag sc_hook_tag;
            config_hook_tag sc_hook_hardpower;
            config_hook_tag sc_ghook_tag;
            int sc_save;
            int sc_initvalue;
    };
    
    static int      pwctl_match(struct device *, struct cfdata *, void *);
    static void     pwctl_attach(struct device *, struct device *, void *);
    static int      pwctl_hook(void *, int, long, void *);
    static int      pwctl_ghook(void *, int, long, void *);
    int     pwctl_hardpower(void *, int, long, void *);
    
    CFATTACH_DECL(pwctl, sizeof(struct pwctl_softc),
        pwctl_match, pwctl_attach, NULL, NULL);
    
    int
    pwctl_match(struct device *parent, struct cfdata *match, void *aux)
    {
            struct hpcio_attach_args *haa = aux;
            platid_mask_t mask;
    
           if (strcmp(haa->haa_busname, HPCIO_BUSNAME))
                   return (0);
           if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0)
                   return (0);
           mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]);
           if (!platid_match(&platid, &mask))
                   return (0);
           return (1);
   }
   
   void
   pwctl_attach(struct device *parent, struct device *self, void *aux)
   {
           struct hpcio_attach_args *haa = aux;
           int *loc;
           struct pwctl_softc *sc = device_private(self);
   
           loc = device_cfdata(&sc->sc_dev)->cf_loc;
           sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]);
           sc->sc_port = loc[HPCIOIFCF_PORT];
           sc->sc_id = loc[HPCIOIFCF_ID];
           sc->sc_on = loc[HPCIOIFCF_ACTIVE] ? 1 : 0;
           sc->sc_off = loc[HPCIOIFCF_ACTIVE] ? 0 : 1;
           sc->sc_initvalue = loc[HPCIOIFCF_INITVALUE];
   
           printf(" port=%d id=%ld on=%d%s",
               sc->sc_port, sc->sc_id, sc->sc_on,
               sc->sc_initvalue == -1 ? "" :
               sc->sc_initvalue ? " init=on" : " init=off");
   
           if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT ||
               sc->sc_id == HPCIOIFCF_ID_DEFAULT) {
                   printf(" (ignored)");
           } else {
                   sc->sc_hook_tag = config_hook(CONFIG_HOOK_POWERCONTROL,
                       sc->sc_id, CONFIG_HOOK_SHARE, pwctl_hook, sc);
                   sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET,
                       sc->sc_id, CONFIG_HOOK_SHARE, pwctl_ghook, sc);
                   sc->sc_hook_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
                       CONFIG_HOOK_PMEVENT_HARDPOWER, CONFIG_HOOK_SHARE,
                       pwctl_hardpower, sc);
           }
   
           if (sc->sc_initvalue != -1)
                   hpcio_portwrite(sc->sc_hc, sc->sc_port,
                       sc->sc_initvalue ? sc->sc_on : sc->sc_off);
           printf("\n");
   }
   
   int
   pwctl_hook(void *ctx, int type, long id, void *msg)
   {
           struct pwctl_softc *sc = ctx;
   
           DPRINTF(("pwctl hook: port %d %s(%d)", sc->sc_port,
               msg ? "ON" : "OFF", msg ? sc->sc_on : sc->sc_off));
           hpcio_portwrite(sc->sc_hc, sc->sc_port,
               msg ? sc->sc_on : sc->sc_off);
   
           return (0);
   }
   
   int
   pwctl_ghook(void *ctx, int type, long id, void *msg)
   {
           struct pwctl_softc *sc = ctx;
   
           if (CONFIG_HOOK_VALUEP(msg))
                   return (1);
   
           *(int*)msg = hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on;
           DPRINTF(("pwctl ghook: port %d %s(%d)", sc->sc_port,
               *(int*)msg? "ON" : "OFF", *(int*)msg ? sc->sc_on : sc->sc_off));
   
           return (0);
   }
   
   int
   pwctl_hardpower(void *ctx, int type, long id, void *msg)
   {
           struct pwctl_softc *sc = ctx;
           int why =(int)msg;
   
           VPRINTF(("pwctl hardpower: port %d %s: %s(%d)\n", sc->sc_port,
               why == PWR_RESUME? "resume"
               : why == PWR_SUSPEND? "suspend" : "standby",
               sc->sc_save == sc->sc_on ? "on": "off", sc->sc_save));
   
           switch (why) {
           case PWR_STANDBY:
                   break;
           case PWR_SUSPEND:
                   sc->sc_save = hpcio_portread(sc->sc_hc, sc->sc_port);
                   hpcio_portwrite(sc->sc_hc, sc->sc_port, sc->sc_off);
                   break;
           case PWR_RESUME:
                   hpcio_portwrite(sc->sc_hc, sc->sc_port, sc->sc_save);
                   break;
           }
   
           return (0);
   }

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