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.
41 * Subroutines shared by the ukphy driver and other PHY drivers.
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/malloc.h>
48 #include <sys/socket.h>
49 #include <sys/module.h>
53 #include <net/if_media.h>
55 #include <dev/mii/mii.h>
56 #include <dev/mii/miivar.h>
58 #include "miibus_if.h"
61 static const char rcsid[] =
66 * Media status subroutine. If a PHY driver does media detection simply
67 * by decoding the NWay autonegotiation, use this routine.
71 struct mii_softc *phy;
73 struct mii_data *mii = phy->mii_pdata;
74 int bmsr, bmcr, anlpar;
76 mii->mii_media_status = IFM_AVALID;
77 mii->mii_media_active = IFM_ETHER;
79 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
81 mii->mii_media_status |= IFM_ACTIVE;
83 bmcr = PHY_READ(phy, MII_BMCR);
84 if (bmcr & BMCR_ISO) {
85 mii->mii_media_active |= IFM_NONE;
86 mii->mii_media_status = 0;
91 mii->mii_media_active |= IFM_LOOP;
93 if (bmcr & BMCR_AUTOEN) {
95 * NWay autonegotiation takes the highest-order common
96 * bit of the ANAR and ANLPAR (i.e. best media advertised
97 * both by us and our link partner).
99 if ((bmsr & BMSR_ACOMP) == 0) {
100 /* Erg, still trying, I guess... */
101 mii->mii_media_active |= IFM_NONE;
105 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR);
106 if (anlpar & ANLPAR_T4)
107 mii->mii_media_active |= IFM_100_T4;
108 else if (anlpar & ANLPAR_TX_FD)
109 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
110 else if (anlpar & ANLPAR_TX)
111 mii->mii_media_active |= IFM_100_TX;
112 else if (anlpar & ANLPAR_10_FD)
113 mii->mii_media_active |= IFM_10_T|IFM_FDX;
114 else if (anlpar & ANLPAR_10)
115 mii->mii_media_active |= IFM_10_T;
117 mii->mii_media_active |= IFM_NONE;
119 mii->mii_media_active = mii_media_from_bmcr(bmcr);