ukphy_subr.c revision 129844
1251881Speter/* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */ 2251881Speter 3251881Speter/*- 4251881Speter * Copyright (c) 1998 The NetBSD Foundation, Inc. 5251881Speter * All rights reserved. 6251881Speter * 7251881Speter * This code is derived from software contributed to The NetBSD Foundation 8251881Speter * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9251881Speter * NASA Ames Research Center, and by Frank van der Linden. 10251881Speter * 11251881Speter * Redistribution and use in source and binary forms, with or without 12251881Speter * modification, are permitted provided that the following conditions 13251881Speter * are met: 14251881Speter * 1. Redistributions of source code must retain the above copyright 15251881Speter * notice, this list of conditions and the following disclaimer. 16251881Speter * 2. Redistributions in binary form must reproduce the above copyright 17251881Speter * notice, this list of conditions and the following disclaimer in the 18251881Speter * documentation and/or other materials provided with the distribution. 19251881Speter * 3. All advertising materials mentioning features or use of this software 20251881Speter * must display the following acknowledgement: 21251881Speter * This product includes software developed by the NetBSD 22251881Speter * Foundation, Inc. and its contributors. 23251881Speter * 4. Neither the name of The NetBSD Foundation nor the names of its 24251881Speter * contributors may be used to endorse or promote products derived 25251881Speter * from this software without specific prior written permission. 26251881Speter * 27251881Speter * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28251881Speter * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29251881Speter * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30251881Speter * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31251881Speter * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32251881Speter * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33251881Speter * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34251881Speter * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35251881Speter * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36251881Speter * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37251881Speter * POSSIBILITY OF SUCH DAMAGE. 38251881Speter */ 39251881Speter 40251881Speter#include <sys/cdefs.h> 41251881Speter__FBSDID("$FreeBSD: head/sys/dev/mii/ukphy_subr.c 129844 2004-05-29 18:09:10Z marius $"); 42251881Speter 43251881Speter/* 44251881Speter * Subroutines shared by the ukphy driver and other PHY drivers. 45251881Speter */ 46251881Speter 47251881Speter#include <sys/param.h> 48251881Speter#include <sys/systm.h> 49251881Speter#include <sys/socket.h> 50251881Speter#include <sys/module.h> 51251881Speter#include <sys/bus.h> 52251881Speter 53251881Speter#include <net/if.h> 54251881Speter#include <net/if_media.h> 55251881Speter 56251881Speter#include <dev/mii/mii.h> 57251881Speter#include <dev/mii/miivar.h> 58251881Speter 59251881Speter#include "miibus_if.h" 60251881Speter 61251881Speter/* 62251881Speter * Media status subroutine. If a PHY driver does media detection simply 63251881Speter * by decoding the NWay autonegotiation, use this routine. 64251881Speter */ 65251881Spetervoid 66251881Speterukphy_status(struct mii_softc *phy) 67251881Speter{ 68251881Speter struct mii_data *mii = phy->mii_pdata; 69251881Speter struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 70251881Speter int bmsr, bmcr, anlpar; 71251881Speter 72251881Speter mii->mii_media_status = IFM_AVALID; 73251881Speter mii->mii_media_active = IFM_ETHER; 74251881Speter 75251881Speter bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 76251881Speter if (bmsr & BMSR_LINK) 77251881Speter mii->mii_media_status |= IFM_ACTIVE; 78251881Speter 79251881Speter bmcr = PHY_READ(phy, MII_BMCR); 80251881Speter if (bmcr & BMCR_ISO) { 81251881Speter mii->mii_media_active |= IFM_NONE; 82251881Speter mii->mii_media_status = 0; 83251881Speter return; 84251881Speter } 85251881Speter 86251881Speter if (bmcr & BMCR_LOOP) 87251881Speter mii->mii_media_active |= IFM_LOOP; 88251881Speter 89251881Speter if (bmcr & BMCR_AUTOEN) { 90251881Speter /* 91251881Speter * NWay autonegotiation takes the highest-order common 92251881Speter * bit of the ANAR and ANLPAR (i.e. best media advertised 93251881Speter * both by us and our link partner). 94251881Speter */ 95251881Speter if ((bmsr & BMSR_ACOMP) == 0) { 96251881Speter /* Erg, still trying, I guess... */ 97251881Speter mii->mii_media_active |= IFM_NONE; 98251881Speter return; 99251881Speter } 100251881Speter 101251881Speter anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 102251881Speter if (anlpar & ANLPAR_T4) 103251881Speter mii->mii_media_active |= IFM_100_T4; 104251881Speter else if (anlpar & ANLPAR_TX_FD) 105251881Speter mii->mii_media_active |= IFM_100_TX|IFM_FDX; 106251881Speter else if (anlpar & ANLPAR_TX) 107251881Speter mii->mii_media_active |= IFM_100_TX; 108251881Speter else if (anlpar & ANLPAR_10_FD) 109251881Speter mii->mii_media_active |= IFM_10_T|IFM_FDX; 110251881Speter else if (anlpar & ANLPAR_10) 111251881Speter mii->mii_media_active |= IFM_10_T; 112251881Speter else 113251881Speter mii->mii_media_active |= IFM_NONE; 114251881Speter } else 115251881Speter mii->mii_media_active = ife->ifm_media; 116251881Speter} 117251881Speter