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Annotation of sys/arch/mvmeppc/dev/raven.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: raven.c,v 1.6 2004/05/14 20:38:32 miod Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2001 Steve Murphree, Jr.
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  * 3. All advertising materials mentioning features or use of this software
        !            15:  *    must display the following acknowledgement:
        !            16:  *     This product includes software developed under OpenBSD for RTMX Inc
        !            17:  *      by Per Fogelstrom, Opsycon AB.
        !            18:  * 4. The name of the author may not be used to endorse or promote products
        !            19:  *    derived from this software without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
        !            22:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            23:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
        !            25:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  */
        !            34:
        !            35: /*
        !            36:  * Motorola 'Raven' ASIC driver.
        !            37:  */
        !            38:
        !            39: #include <sys/param.h>
        !            40: #include <sys/systm.h>
        !            41: #include <sys/kernel.h>
        !            42: #include <sys/malloc.h>
        !            43: #include <sys/device.h>
        !            44: #include <sys/proc.h>
        !            45: #include <uvm/uvm_extern.h>
        !            46:
        !            47: #include <machine/autoconf.h>
        !            48:
        !            49: #include <mvmeppc/dev/ravenreg.h>
        !            50: #include <mvmeppc/dev/ravenvar.h>
        !            51:
        !            52: int     raven_match(struct device *, void *, void *);
        !            53: void    raven_attach(struct device *, struct device *, void *);
        !            54:
        !            55: struct cfattach raven_ca = {
        !            56:         sizeof(struct raven_softc), raven_match, raven_attach,
        !            57: };
        !            58:
        !            59: struct cfdriver raven_cd = {
        !            60:        NULL, "raven", DV_DULL,
        !            61: };
        !            62:
        !            63: int
        !            64: raven_match(struct device *parent, void *match, void *aux)
        !            65: {
        !            66:        struct confargs *ca = aux;
        !            67:        void *va;
        !            68:        u_int32_t probe;
        !            69:
        !            70:        if (strcmp(ca->ca_name, raven_cd.cd_name) != 0)
        !            71:                return 0;
        !            72:
        !            73:        if ((va = mapiodev((paddr_t)RAVEN_BASE, RAVEN_SIZE)) == NULL)
        !            74:                return 0;
        !            75:
        !            76:        /* check for a live address */
        !            77:        if (badaddr(va, 4) != 0) {
        !            78:                unmapiodev(va, RAVEN_SIZE);
        !            79:                return 0;
        !            80:        }
        !            81:
        !            82:        /* now check and see if it's a raven ASIC */
        !            83:        probe = *(u_int32_t*)va;
        !            84:        unmapiodev((void *)va, RAVEN_SIZE);
        !            85:
        !            86:        if (probe != RAVEN_MAGIC)
        !            87:                return 0;
        !            88:
        !            89:        return 1;
        !            90: }
        !            91:
        !            92: /* need to be global for mpcpcibr.c - XXX */
        !            93: u_int8_t *ravenregs;
        !            94:
        !            95: void
        !            96: raven_attach(struct device *parent, struct device *self, void *aux)
        !            97: {
        !            98:        struct raven_softc *sc = (void *)self;
        !            99:
        !           100:        /*
        !           101:         * Map Raven registers and MPCIC
        !           102:         *
        !           103:         * XXX steal them from devio_ex as well!
        !           104:         */
        !           105:        ravenregs = sc->sc_regs = mapiodev((paddr_t)RAVEN_BASE, RAVEN_SIZE);
        !           106:        if (sc->sc_regs == NULL) {
        !           107:                printf(": can't map registers!\n");
        !           108:                return;
        !           109:        }
        !           110:
        !           111:        /* set system type */
        !           112:        system_type = MVME;             /* We are a Motorola MVME SBC */
        !           113:
        !           114:        printf(": version 0x%x\n", sc->sc_regs[RAVEN_REVID]);
        !           115:
        !           116:        while (config_found(self, NULL, NULL))
        !           117:                ;
        !           118: }