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Annotation of sys/arch/mvmeppc/dev/raven.c, Revision 1.1.1.1

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: }