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

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: }