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

1.1     ! nbrk        1: /*     $OpenBSD: if_le.c,v 1.18 2007/06/17 21:20:47 jasper Exp $       */
        !             2: /*     $NetBSD: if_le_isa.c,v 1.2 1996/05/12 23:52:56 mycroft Exp $    */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
        !             6:  * Copyright (c) 1992, 1993
        !             7:  *     The Regents of the University of California.  All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software contributed to Berkeley by
        !            10:  * Ralph Campbell and Rick Macklem.
        !            11:  *
        !            12:  * Redistribution and use in source and binary forms, with or without
        !            13:  * modification, are permitted provided that the following conditions
        !            14:  * are met:
        !            15:  * 1. Redistributions of source code must retain the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer.
        !            17:  * 2. Redistributions in binary form must reproduce the above copyright
        !            18:  *    notice, this list of conditions and the following disclaimer in the
        !            19:  *    documentation and/or other materials provided with the distribution.
        !            20:  * 3. Neither the name of the University nor the names of its contributors
        !            21:  *    may be used to endorse or promote products derived from this software
        !            22:  *    without specific prior written permission.
        !            23:  *
        !            24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            34:  * SUCH DAMAGE.
        !            35:  *
        !            36:  *     @(#)if_le.c     8.2 (Berkeley) 11/16/93
        !            37:  */
        !            38:
        !            39: #include "bpfilter.h"
        !            40: #include "isadma.h"
        !            41:
        !            42: #include <sys/param.h>
        !            43: #include <sys/systm.h>
        !            44: #include <sys/mbuf.h>
        !            45: #include <sys/syslog.h>
        !            46: #include <sys/socket.h>
        !            47: #include <sys/device.h>
        !            48:
        !            49: #include <net/if.h>
        !            50: #include <net/if_media.h>
        !            51:
        !            52: #ifdef INET
        !            53: #include <netinet/in.h>
        !            54: #include <netinet/if_ether.h>
        !            55: #endif
        !            56:
        !            57: #include <machine/cpu.h>
        !            58: #include <machine/intr.h>
        !            59:
        !            60: #include <dev/isa/isareg.h>
        !            61: #include <dev/isa/isavar.h>
        !            62: #include <dev/isa/isadmavar.h>
        !            63:
        !            64: #include <dev/ic/am7990reg.h>
        !            65: #include <dev/ic/am7990var.h>
        !            66:
        !            67: #include <dev/isa/if_levar.h>
        !            68:
        !            69: void
        !            70: le_isa_wrcsr(struct am7990_softc *sc, u_int16_t port, u_int16_t val)
        !            71: {
        !            72:        struct le_softc *lesc = (struct le_softc *)sc;
        !            73:        bus_space_tag_t iot = lesc->sc_iot;
        !            74:        bus_space_handle_t ioh = lesc->sc_ioh;
        !            75:
        !            76:        bus_space_write_2(iot, ioh, lesc->sc_rap, port);
        !            77:        bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
        !            78: }
        !            79:
        !            80: u_int16_t
        !            81: le_isa_rdcsr(struct am7990_softc *sc, u_int16_t port)
        !            82: {
        !            83:        struct le_softc *lesc = (struct le_softc *)sc;
        !            84:        bus_space_tag_t iot = lesc->sc_iot;
        !            85:        bus_space_handle_t ioh = lesc->sc_ioh;
        !            86:        u_int16_t val;
        !            87:
        !            88:        bus_space_write_2(iot, ioh, lesc->sc_rap, port);
        !            89:        val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
        !            90:        return (val);
        !            91: }
        !            92:
        !            93:
        !            94: /*
        !            95:  * Controller interrupt.
        !            96:  */
        !            97: int
        !            98: le_isa_intredge(void *arg)
        !            99: {
        !           100:
        !           101:        if (am7990_intr(arg) == 0)
        !           102:                return (0);
        !           103:        for (;;)
        !           104:                if (am7990_intr(arg) == 0)
        !           105:                        return (1);
        !           106: }