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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: }