Annotation of sys/arch/sparc64/dev/power.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: power.c,v 1.5 2007/04/24 18:30:45 kettenis Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2006 Jason L. Wright (jason@thought.net)
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 26: * POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: /*
! 30: * Driver for power-button device on U5, U10, etc.
! 31: */
! 32:
! 33: #include <sys/types.h>
! 34: #include <sys/param.h>
! 35: #include <sys/systm.h>
! 36: #include <sys/kernel.h>
! 37: #include <sys/device.h>
! 38: #include <sys/conf.h>
! 39: #include <sys/timeout.h>
! 40: #include <sys/proc.h>
! 41: #include <sys/signalvar.h>
! 42:
! 43: #include <machine/bus.h>
! 44: #include <machine/autoconf.h>
! 45: #include <machine/openfirm.h>
! 46:
! 47: #include <sparc64/dev/ebusreg.h>
! 48: #include <sparc64/dev/ebusvar.h>
! 49:
! 50: #define POWER_REG 0
! 51:
! 52: #define POWER_REG_CPWR_OFF 0x00000002 /* courtesy power off */
! 53: #define POWER_REG_SPWR_OFF 0x00000001 /* system power off */
! 54:
! 55: struct power_softc {
! 56: struct device sc_dev;
! 57: bus_space_tag_t sc_iot;
! 58: bus_space_handle_t sc_ioh;
! 59: struct intrhand *sc_ih;
! 60: };
! 61:
! 62: int power_match(struct device *, void *, void *);
! 63: void power_attach(struct device *, struct device *, void *);
! 64: int power_intr(void *);
! 65:
! 66: struct cfattach power_ca = {
! 67: sizeof(struct power_softc), power_match, power_attach
! 68: };
! 69:
! 70: struct cfdriver power_cd = {
! 71: NULL, "power", DV_DULL
! 72: };
! 73:
! 74: int
! 75: power_match(parent, match, aux)
! 76: struct device *parent;
! 77: void *match;
! 78: void *aux;
! 79: {
! 80: struct ebus_attach_args *ea = aux;
! 81:
! 82: if (strcmp(ea->ea_name, "power") == 0)
! 83: return (1);
! 84: return (0);
! 85: }
! 86:
! 87: void
! 88: power_attach(parent, self, aux)
! 89: struct device *parent, *self;
! 90: void *aux;
! 91: {
! 92: struct power_softc *sc = (void *)self;
! 93: struct ebus_attach_args *ea = aux;
! 94:
! 95: if (ea->ea_nregs < 1) {
! 96: printf(": no registers\n");
! 97: return;
! 98: }
! 99:
! 100: /* Use prom address if available, otherwise map it. */
! 101: if (ea->ea_nvaddrs) {
! 102: if (bus_space_map(ea->ea_memtag, ea->ea_vaddrs[0], 0,
! 103: BUS_SPACE_MAP_PROMADDRESS, &sc->sc_ioh)) {
! 104: printf(": can't map PROM register space\n");
! 105: return;
! 106: }
! 107: sc->sc_iot = ea->ea_memtag;
! 108: } else if (ebus_bus_map(ea->ea_iotag, 0,
! 109: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
! 110: ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
! 111: sc->sc_iot = ea->ea_iotag;
! 112: } else if (ebus_bus_map(ea->ea_memtag, 0,
! 113: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]),
! 114: ea->ea_regs[0].size, 0, 0, &sc->sc_ioh) == 0) {
! 115: sc->sc_iot = ea->ea_memtag;
! 116: } else {
! 117: printf("%s: can't map register space\n", self->dv_xname);
! 118: return;
! 119: }
! 120:
! 121: if (ea->ea_nintrs > 0 && OF_getproplen(ea->ea_node, "button") >= 0) {
! 122: sc->sc_ih = bus_intr_establish(sc->sc_iot, ea->ea_intrs[0],
! 123: IPL_BIO, 0, power_intr, sc, self->dv_xname);
! 124: if (sc->sc_ih == NULL) {
! 125: printf(": can't establish interrupt\n");
! 126: return;
! 127: }
! 128: }
! 129: printf("\n");
! 130: }
! 131:
! 132: int
! 133: power_intr(void *vsc)
! 134: {
! 135: extern int kbd_reset;
! 136:
! 137: if (kbd_reset == 1) {
! 138: kbd_reset = 0;
! 139: psignal(initproc, SIGUSR2);
! 140: }
! 141: return (1);
! 142: }
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