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Annotation of sys/dev/isa/com_commulti.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: com_commulti.c,v 1.2 2003/06/02 23:28:02 millert Exp $        */
                      2: /*
                      3:  * Copyright (c) 1997 - 1999, Jason Downs.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name(s) of the author(s) nor the name OpenBSD
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
                     18:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     19:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
                     20:  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
                     21:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     22:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     23:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
                     24:  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29: /*-
                     30:  * Copyright (c) 1993, 1994, 1995, 1996
                     31:  *     Charles M. Hannum.  All rights reserved.
                     32:  * Copyright (c) 1991 The Regents of the University of California.
                     33:  * All rights reserved.
                     34:  *
                     35:  * Redistribution and use in source and binary forms, with or without
                     36:  * modification, are permitted provided that the following conditions
                     37:  * are met:
                     38:  * 1. Redistributions of source code must retain the above copyright
                     39:  *    notice, this list of conditions and the following disclaimer.
                     40:  * 2. Redistributions in binary form must reproduce the above copyright
                     41:  *    notice, this list of conditions and the following disclaimer in the
                     42:  *    documentation and/or other materials provided with the distribution.
                     43:  * 3. Neither the name of the University nor the names of its contributors
                     44:  *    may be used to endorse or promote products derived from this software
                     45:  *    without specific prior written permission.
                     46:  *
                     47:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     48:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     49:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     50:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     51:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     52:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     53:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     54:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     55:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     56:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     57:  * SUCH DAMAGE.
                     58:  *
                     59:  *     @(#)com.c       7.5 (Berkeley) 5/16/91
                     60:  */
                     61:
                     62: #include <sys/param.h>
                     63: #include <sys/systm.h>
                     64: #include <sys/tty.h>
                     65: #include <sys/device.h>
                     66:
                     67: #include <machine/intr.h>
                     68: #include <machine/bus.h>
                     69:
                     70: #include <dev/ic/comreg.h>
                     71: #include <dev/ic/comvar.h>
                     72:
                     73: #include <dev/isa/isavar.h>
                     74:
                     75: int com_commulti_probe(struct device *, void *, void *);
                     76: void com_commulti_attach(struct device *, struct device *, void *);
                     77:
                     78: struct cfattach com_commulti_ca = {
                     79:         sizeof(struct com_softc), com_commulti_probe, com_commulti_attach
                     80: };
                     81:
                     82: int
                     83: com_commulti_probe(struct device *parent, void *match, void *aux)
                     84: {
                     85:        struct commulti_attach_args *ca = aux;
                     86:        struct cfdata *cf = match;
                     87:        bus_space_handle_t ioh;
                     88:        bus_space_tag_t iot;
                     89:        int iobase;
                     90:
                     91:        if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != ca->ca_slave)
                     92:                return (0);
                     93:
                     94:        iot = ca->ca_iot;
                     95:        iobase = ca->ca_iobase;
                     96:        ioh = ca->ca_ioh;
                     97:
                     98: #ifdef KGDB
                     99:        if (iobase == com_kgdb_addr)
                    100:                return (1);
                    101: #endif
                    102:        /* if it's in use as console, it's there. */
                    103:        if (iobase == comconsaddr && !comconsattached)
                    104:                return (1);
                    105:
                    106:        return (comprobe1(iot, ioh));
                    107: }
                    108:
                    109: void
                    110: com_commulti_attach(struct device *, struct device *, void *)
                    111: {
                    112:        struct commulti_attach_args *ca = aux;
                    113:        struct com_softc *sc = (void *)self;
                    114:
                    115:        sc->sc_hwflags = 0;
                    116:        sc->sc_swflags = 0;
                    117:        sc->sc_iot = ca->ca_iot;
                    118:        sc->sc_ioh = ca->ca_ioh;
                    119:        sc->sc_iobase = ca->ca_iobase;
                    120:        sc->sc_frequency = COM_FREQ;
                    121:        if (ca->ca_noien)
                    122:                SET(sc->sc_hwflags, COM_HW_NOIEN);
                    123:
                    124:        com_attach_subr(sc);
                    125: }