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

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: }