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 * $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 $ 41 */ 42 43 /* 44 * Subroutines shared by the ukphy driver and other PHY drivers. 45 */ 46 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> 52 #include <sys/bus.h> 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 57 #include "mii.h" 58 #include "miivar.h" 59 60 #include "miibus_if.h" 61 62 /* 63 * Media status subroutine. If a PHY driver does media detection simply 64 * by decoding the NWay autonegotiation, use this routine. 65 */ 66 void 67 ukphy_status(phy) 68 struct mii_softc *phy; 69 { 70 struct mii_data *mii = phy->mii_pdata; 71 int bmsr, bmcr, anlpar; 72 73 mii->mii_media_status = IFM_AVALID; 74 mii->mii_media_active = IFM_ETHER; 75 76 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 77 if (bmsr & BMSR_LINK) 78 mii->mii_media_status |= IFM_ACTIVE; 79 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; 84 return; 85 } 86 87 if (bmcr & BMCR_LOOP) 88 mii->mii_media_active |= IFM_LOOP; 89 90 if (bmcr & BMCR_AUTOEN) { 91 /* 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). 95 */ 96 if ((bmsr & BMSR_ACOMP) == 0) { 97 /* Erg, still trying, I guess... */ 98 mii->mii_media_active |= IFM_NONE; 99 return; 100 } 101 102 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; 113 else 114 mii->mii_media_active |= IFM_NONE; 115 } else 116 mii->mii_media_active = mii_media_from_bmcr(bmcr); 117 } 118