Home | History | Annotate | Line # | Download | only in dev
power.c revision 1.8 
      1 /*	$NetBSD: power.c,v 1.8 1998/01/12 20:23:55 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1996
      5  *	The President and Fellows of Harvard College. All rights reserved.
      6  *
      7  * All advertising materials mentioning features or use of this software
      8  * must display the following acknowledgement:
      9  *	This product includes software developed by Aaron Brown and
     10  *	Harvard University.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  *
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  * 3. All advertising materials mentioning features or use of this software
     22  *    must display the following acknowledgement:
     23  *	This product includes software developed by Harvard University
     24  *	and its contributors.
     25  * 4. Neither the name of the University nor the names of its contributors
     26  *    may be used to endorse or promote products derived from this software
     27  *    without specific prior written permission.
     28  *
     29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     39  * SUCH DAMAGE.
     40  */
     41 
     42 #include <sys/param.h>
     43 #include <sys/device.h>
     44 #include <sys/kernel.h>
     45 #include <sys/systm.h>
     46 
     47 #include <machine/autoconf.h>
     48 
     49 #include <sparc/dev/power.h>
     50 
     51 static int powermatch __P((struct device *, struct cfdata *, void *));
     52 static void powerattach __P((struct device *, struct device *, void *));
     53 
     54 struct cfattach power_ca = {
     55 	sizeof(struct device), powermatch, powerattach
     56 };
     57 
     58 /*
     59  * This is the driver for the "power" register available on some Sun4m
     60  * machines. This allows the machine to remove power automatically when
     61  * shutdown or halted or whatever.
     62  *
     63  * XXX: this capability is not utilized in the current kernel.
     64  */
     65 
     66 static int
     67 powermatch(parent, cf, aux)
     68 	struct device *parent;
     69 	struct cfdata *cf;
     70 	void *aux;
     71 {
     72 	register struct confargs *ca = aux;
     73 
     74 	if (CPU_ISSUN4M)
     75 		return (strcmp("power", ca->ca_ra.ra_name) == 0);
     76 
     77 	return (0);
     78 }
     79 
     80 /* ARGSUSED */
     81 static void
     82 powerattach(parent, self, aux)
     83 	struct device *parent, *self;
     84 	void *aux;
     85 {
     86 	struct confargs *ca = aux;
     87 	struct romaux *ra = &ca->ca_ra;
     88 
     89 	power_reg = mapiodev(ra->ra_reg, 0, sizeof(long));
     90 
     91 	printf("\n");
     92 }
     93 
     94 void
     95 powerdown()
     96 {
     97 	*POWER_REG |= POWER_OFF;
     98 }
     99