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: }
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