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Annotation of sys/dev/isa/cy_isa.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: cy_isa.c,v 1.9 2002/09/15 21:30:25 art Exp $  */
        !             2: /*
        !             3:  * Copyright (c) 1996 Timo Rossi.
        !             4:  * All rights reserved.
        !             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. Neither the name of the author nor the names of contributors
        !            15:  *    may be used to endorse or promote products derived from this software
        !            16:  *    without specific prior written permission.
        !            17:  *
        !            18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
        !            19:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            20:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            21:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
        !            22:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            23:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            24:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            25:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            26:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            27:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            28:  * SUCH DAMAGE.
        !            29:  */
        !            30:
        !            31: /*
        !            32:  * cy_isa.c
        !            33:  *
        !            34:  * Driver for Cyclades Cyclom-8/16/32 multiport serial cards
        !            35:  * (currently not tested with Cyclom-32 cards)
        !            36:  *
        !            37:  * Timo Rossi, 1996
        !            38:  */
        !            39:
        !            40: #include <sys/param.h>
        !            41: #include <sys/systm.h>
        !            42: #include <sys/device.h>
        !            43:
        !            44: #include <machine/bus.h>
        !            45:
        !            46: #include <dev/isa/isavar.h>
        !            47: #include <dev/isa/isareg.h>
        !            48:
        !            49: #include <dev/ic/cd1400reg.h>
        !            50: #include <dev/ic/cyreg.h>
        !            51:
        !            52: static int cy_isa_probe(struct device *, void *, void *);
        !            53: void cy_isa_attach(struct device *, struct device *, void *);
        !            54:
        !            55: struct cfattach cy_isa_ca = {
        !            56:        sizeof(struct cy_softc), cy_isa_probe, cy_isa_attach
        !            57: };
        !            58:
        !            59: int
        !            60: cy_isa_probe(parent, match, aux)
        !            61:        struct device *parent;
        !            62:        void *match, *aux;
        !            63: {
        !            64:        int card = ((struct device *)match)->dv_unit;
        !            65:        struct isa_attach_args *ia = aux;
        !            66:        bus_space_tag_t memt;
        !            67:        bus_space_handle_t memh;
        !            68:        int ret;
        !            69:
        !            70:        if (ia->ia_irq == IRQUNK) {
        !            71:                printf("cy%d error: interrupt not defined\n", card);
        !            72:                return (0);
        !            73:        }
        !            74:
        !            75:        memt = ia->ia_memt;
        !            76:        if (bus_space_map(memt, ia->ia_maddr, 0x2000, 0, &memh) != 0)
        !            77:                return (0);
        !            78:
        !            79:        ret = cy_probe_common(memt, memh, CY_BUSTYPE_ISA);
        !            80:        bus_space_unmap(memt, memh, 0x2000);
        !            81:        if (ret == 0)
        !            82:                return (0);
        !            83:
        !            84:        ia->ia_iosize = 0;
        !            85:        ia->ia_msize = 0x2000;
        !            86:        return (1);
        !            87: }
        !            88:
        !            89: void
        !            90: cy_isa_attach(parent, self, aux)
        !            91:         struct device *parent, *self;
        !            92:         void *aux;
        !            93: {
        !            94:        struct cy_softc *sc = (struct cy_softc *)self;
        !            95:        struct isa_attach_args *ia = aux;
        !            96:
        !            97:        sc->sc_bustype = CY_BUSTYPE_ISA;
        !            98:        sc->sc_memt = ia->ia_memt;
        !            99:
        !           100:        if (bus_space_map(ia->ia_memt, ia->ia_maddr, 0x2000, 0,
        !           101:            &sc->sc_memh) != 0)
        !           102:                return;
        !           103:
        !           104:        sc->sc_nr_cd1400s = cy_probe_common(sc->sc_memt, sc->sc_memh,
        !           105:            CY_BUSTYPE_ISA);
        !           106:
        !           107:        cy_attach(parent, self);
        !           108:
        !           109:        sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq,
        !           110:            IST_EDGE, IPL_TTY, cy_intr, sc, sc->sc_dev.dv_xname);
        !           111:
        !           112:        if (sc->sc_ih == NULL)
        !           113:                panic("cy: couldn't establish interrupt");
        !           114: }