1 /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center, and by Frank van der Linden.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
39 * $FreeBSD: src/sys/dev/mii/ukphy_subr.c,v 1.2.2.1 2002/11/08 21:53:49 semenu Exp $
40 * $DragonFly: src/sys/dev/netif/mii_layer/ukphy_subr.c,v 1.3 2003/08/07 21:17:03 dillon Exp $
44 * Subroutines shared by the ukphy driver and other PHY drivers.
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/socket.h>
51 #include <sys/module.h>
55 #include <net/if_media.h>
60 #include "miibus_if.h"
63 * Media status subroutine. If a PHY driver does media detection simply
64 * by decoding the NWay autonegotiation, use this routine.
68 struct mii_softc *phy;
70 struct mii_data *mii = phy->mii_pdata;
71 int bmsr, bmcr, anlpar;
73 mii->mii_media_status = IFM_AVALID;
74 mii->mii_media_active = IFM_ETHER;
76 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
78 mii->mii_media_status |= IFM_ACTIVE;
80 bmcr = PHY_READ(phy, MII_BMCR);
81 if (bmcr & BMCR_ISO) {
82 mii->mii_media_active |= IFM_NONE;
83 mii->mii_media_status = 0;
88 mii->mii_media_active |= IFM_LOOP;
90 if (bmcr & BMCR_AUTOEN) {
92 * NWay autonegotiation takes the highest-order common
93 * bit of the ANAR and ANLPAR (i.e. best media advertised
94 * both by us and our link partner).
96 if ((bmsr & BMSR_ACOMP) == 0) {
97 /* Erg, still trying, I guess... */
98 mii->mii_media_active |= IFM_NONE;
102 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
103 if (anlpar & ANLPAR_T4)
104 mii->mii_media_active |= IFM_100_T4;
105 else if (anlpar & ANLPAR_TX_FD)
106 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
107 else if (anlpar & ANLPAR_TX)
108 mii->mii_media_active |= IFM_100_TX;
109 else if (anlpar & ANLPAR_10_FD)
110 mii->mii_media_active |= IFM_10_T|IFM_FDX;
111 else if (anlpar & ANLPAR_10)
112 mii->mii_media_active |= IFM_10_T;
114 mii->mii_media_active |= IFM_NONE;
116 mii->mii_media_active = mii_media_from_bmcr(bmcr);