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Annotation of sys/arch/hppa/dev/uturn.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: uturn.c,v 1.3 2005/04/07 00:21:51 mickey Exp $        */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2004 Michael Shalayeff
        !             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 WARRANTIES
        !            18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES 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 MIND, 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
        !            25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
        !            26:  * THE POSSIBILITY OF SUCH DAMAGE.
        !            27:  */
        !            28:
        !            29: /* TODO IOA programming */
        !            30:
        !            31: #include <sys/param.h>
        !            32: #include <sys/systm.h>
        !            33: #include <sys/device.h>
        !            34: #include <sys/reboot.h>
        !            35:
        !            36: #include <machine/iomod.h>
        !            37: #include <machine/autoconf.h>
        !            38:
        !            39: #include <hppa/dev/cpudevs.h>
        !            40:
        !            41: struct uturn_regs {
        !            42:        u_int64_t       resv0[2];
        !            43:        u_int64_t       status;         /* 0x10: */
        !            44:        u_int64_t       resv1[5];
        !            45:        u_int64_t       debug;          /* 0x40: */
        !            46: };
        !            47:
        !            48: struct uturn_softc {
        !            49:        struct device sc_dv;
        !            50:
        !            51:        struct uturn_regs volatile *sc_regs;
        !            52: };
        !            53:
        !            54: int    uturnmatch(struct device *, void *, void *);
        !            55: void   uturnattach(struct device *, struct device *, void *);
        !            56:
        !            57: struct cfattach uturn_ca = {
        !            58:        sizeof(struct uturn_softc), uturnmatch, uturnattach
        !            59: };
        !            60:
        !            61: struct cfdriver uturn_cd = {
        !            62:        NULL, "uturn", DV_DULL
        !            63: };
        !            64:
        !            65: int
        !            66: uturnmatch(parent, cfdata, aux)
        !            67:        struct device *parent;
        !            68:        void *cfdata;
        !            69:        void *aux;
        !            70: {
        !            71:        struct confargs *ca = aux;
        !            72:        /* struct cfdata *cf = cfdata; */
        !            73:
        !            74:        /* there will be only one */
        !            75:        if (ca->ca_type.iodc_type != HPPA_TYPE_IOA ||
        !            76:            ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN)
        !            77:                return 0;
        !            78:
        !            79:        if (ca->ca_type.iodc_model == 0x58 &&
        !            80:            ca->ca_type.iodc_revision >= 0x20)
        !            81:                return 0;
        !            82:
        !            83:        return 1;
        !            84: }
        !            85:
        !            86: void
        !            87: uturnattach(parent, self, aux)
        !            88:        struct device *parent;
        !            89:        struct device *self;
        !            90:        void *aux;
        !            91: {
        !            92:        struct confargs *ca = aux, nca;
        !            93:        struct uturn_softc *sc = (struct uturn_softc *)self;
        !            94:        bus_space_handle_t ioh;
        !            95:
        !            96:        if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
        !            97:                printf(": can't map IO space\n");
        !            98:                return;
        !            99:        }
        !           100:        sc->sc_regs = (struct uturn_regs *)ca->ca_hpa;
        !           101:
        !           102:        printf(": %s rev %d\n",
        !           103:            ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn",
        !           104:            ca->ca_type.iodc_revision & 0xf);
        !           105:
        !           106:        /* keep it real */
        !           107:        ((struct iomod *)ioh)->io_control = 0x80;
        !           108:
        !           109:        nca = *ca;      /* clone from us */
        !           110:        nca.ca_hpamask = HPPA_IOBEGIN;
        !           111:        pdc_scanbus(self, &nca, MAXMODBUS, 0);
        !           112: }