Annotation of sys/arch/sparc/dev/power.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: power.c,v 1.10 2007/07/01 19:07:45 miod Exp $ */
! 2: /* $NetBSD: power.c,v 1.2 1996/05/16 15:56:56 abrown Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1996
! 6: * The President and Fellows of Harvard College. All rights reserved.
! 7: *
! 8: * All advertising materials mentioning features or use of this software
! 9: * must display the following acknowledgement:
! 10: * This product includes software developed by Aaron Brown and
! 11: * Harvard University.
! 12: *
! 13: * Redistribution and use in source and binary forms, with or without
! 14: * modification, are permitted provided that the following conditions
! 15: * are met:
! 16: *
! 17: * 1. Redistributions of source code must retain the above copyright
! 18: * notice, this list of conditions and the following disclaimer.
! 19: * 2. Redistributions in binary form must reproduce the above copyright
! 20: * notice, this list of conditions and the following disclaimer in the
! 21: * documentation and/or other materials provided with the distribution.
! 22: * 3. All advertising materials mentioning features or use of this software
! 23: * must display the following acknowledgement:
! 24: * This product includes software developed by Harvard University
! 25: * and its contributors.
! 26: * 4. Neither the name of the University nor the names of its contributors
! 27: * may be used to endorse or promote products derived from this software
! 28: * without specific prior written permission.
! 29: *
! 30: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 31: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 32: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 33: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 34: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 35: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 36: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 37: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 38: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 39: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 40: * SUCH DAMAGE.
! 41: *
! 42: */
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/device.h>
! 46: #include <sys/kernel.h>
! 47: #include <sys/systm.h>
! 48:
! 49: #include <machine/autoconf.h>
! 50:
! 51: #include <sparc/dev/power.h>
! 52:
! 53: void powerattach(struct device *, struct device *, void *);
! 54: int powermatch(struct device *, void *, void *);
! 55:
! 56: struct cfattach power_ca = {
! 57: sizeof(struct device), powermatch, powerattach
! 58: };
! 59:
! 60: struct cfdriver power_cd = {
! 61: NULL, "power", DV_DULL
! 62: };
! 63:
! 64: static char power_attached = 0;
! 65: volatile u_char *power_reg;
! 66:
! 67: /*
! 68: * This is the driver for the "power" register available on some Sun4m
! 69: * machines. This allows the machine to remove power automatically when
! 70: * shutdown or halted or whatever.
! 71: */
! 72:
! 73: int
! 74: powermatch(struct device *parent, void *vcf, void *aux)
! 75: {
! 76: struct confargs *ca = aux;
! 77:
! 78: if (CPU_ISSUN4M) {
! 79: if (strcmp("power", ca->ca_ra.ra_name) == 0)
! 80: return (1);
! 81: }
! 82:
! 83: return (0);
! 84: }
! 85:
! 86: /* ARGSUSED */
! 87: void
! 88: powerattach(struct device *parent, struct device *self, void *aux)
! 89: {
! 90: struct confargs *ca = aux;
! 91: struct romaux *ra = &ca->ca_ra;
! 92:
! 93: power_reg = mapiodev(ra->ra_reg, 0, sizeof(long));
! 94:
! 95: power_attached = 1;
! 96:
! 97: printf("\n");
! 98: }
! 99:
! 100: void
! 101: auxio_powerdown()
! 102: {
! 103: if (power_attached) {
! 104: *POWER_REG |= POWER_OFF;
! 105: DELAY(1000000);
! 106: }
! 107: }
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