1 /* $NetBSD: elink.c,v 1.6 1995/01/07 21:37:54 mycroft Exp $ */
4 * SPDX-License-Identifier: BSD-4-Clause
6 * Copyright (c) 1994, 1995 Charles Hannum. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Charles Hannum.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 * Common code for dealing with 3COM ethernet cards.
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/module.h>
46 #include <machine/cpufunc.h>
48 #include <dev/ep/elink.h>
51 * Issue a `global reset' to all cards, and reset the ID state machines. We
52 * have to be careful to do the global reset only once during autoconfig, to
53 * prevent resetting boards that have already been configured.
62 outb(ELINK_ID_PORT, ELINK_RESET);
64 outb(ELINK_ID_PORT, 0x00);
65 outb(ELINK_ID_PORT, 0x00);
71 * The `ID sequence' is really just snapshots of an 8-bit CRC register as 0
72 * bits are shifted in. Different board types use different polynomials.
81 for (i = 255; i; i--) {
82 outb(ELINK_ID_PORT, c);
91 static moduledata_t elink_mod = {
92 "elink",/* module name */
93 NULL, /* event handler */
97 DECLARE_MODULE(elink, elink_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
98 MODULE_VERSION(elink, 1);