1 /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 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. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 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. 26 * 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. 38 */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 /* 44 * Subroutines shared by the ukphy driver and other PHY drivers. 45 */ 46 47 #include <sys/cdefs.h> 48 __FBSDID("$FreeBSD$"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/socket.h> 53 #include <sys/module.h> 54 #include <sys/bus.h> 55 56 #include <net/if.h> 57 #include <net/if_media.h> 58 59 #include <dev/mii/mii.h> 60 #include <dev/mii/miivar.h> 61 62 #include "miibus_if.h" 63 64 /* 65 * Media status subroutine. If a PHY driver does media detection simply 66 * by decoding the NWay autonegotiation, use this routine. 67 */ 68 void 69 ukphy_status(struct mii_softc *phy) 70 { 71 struct mii_data *mii = phy->mii_pdata; 72 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 73 int bmsr, bmcr, anlpar; 74 75 mii->mii_media_status = IFM_AVALID; 76 mii->mii_media_active = IFM_ETHER; 77 78 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 79 if (bmsr & BMSR_LINK) 80 mii->mii_media_status |= IFM_ACTIVE; 81 82 bmcr = PHY_READ(phy, MII_BMCR); 83 if (bmcr & BMCR_ISO) { 84 mii->mii_media_active |= IFM_NONE; 85 mii->mii_media_status = 0; 86 return; 87 } 88 89 if (bmcr & BMCR_LOOP) 90 mii->mii_media_active |= IFM_LOOP; 91 92 if (bmcr & BMCR_AUTOEN) { 93 /* 94 * NWay autonegotiation takes the highest-order common 95 * bit of the ANAR and ANLPAR (i.e. best media advertised 96 * both by us and our link partner). 97 */ 98 if ((bmsr & BMSR_ACOMP) == 0) { 99 /* Erg, still trying, I guess... */ 100 mii->mii_media_active |= IFM_NONE; 101 return; 102 } 103 104 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 105 if (anlpar & ANLPAR_T4) 106 mii->mii_media_active |= IFM_100_T4; 107 else if (anlpar & ANLPAR_TX_FD) 108 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 109 else if (anlpar & ANLPAR_TX) 110 mii->mii_media_active |= IFM_100_TX; 111 else if (anlpar & ANLPAR_10_FD) 112 mii->mii_media_active |= IFM_10_T|IFM_FDX; 113 else if (anlpar & ANLPAR_10) 114 mii->mii_media_active |= IFM_10_T; 115 else 116 mii->mii_media_active |= IFM_NONE; 117 } else 118 mii->mii_media_active = ife->ifm_media; 119 } 120