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 /* 41 * Subroutines shared by the ukphy driver and other PHY drivers. 42 */ 43 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> 50 #include <sys/bus.h> 51 52 #include <net/if.h> 53 #include <net/if_media.h> 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 58 #include "miibus_if.h" 59 60 #if !defined(lint) 61 static const char rcsid[] = 62 "$FreeBSD$"; 63 #endif 64 65 /* 66 * Media status subroutine. If a PHY driver does media detection simply 67 * by decoding the NWay autonegotiation, use this routine. 68 */ 69 void 70 ukphy_status(phy) 71 struct mii_softc *phy; 72 { 73 struct mii_data *mii = phy->mii_pdata; 74 int bmsr, bmcr, anlpar; 75 76 mii->mii_media_status = IFM_AVALID; 77 mii->mii_media_active = IFM_ETHER; 78 79 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 80 if (bmsr & BMSR_LINK) 81 mii->mii_media_status |= IFM_ACTIVE; 82 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; 87 return; 88 } 89 90 if (bmcr & BMCR_LOOP) 91 mii->mii_media_active |= IFM_LOOP; 92 93 if (bmcr & BMCR_AUTOEN) { 94 /* 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). 98 */ 99 if ((bmsr & BMSR_ACOMP) == 0) { 100 /* Erg, still trying, I guess... */ 101 mii->mii_media_active |= IFM_NONE; 102 return; 103 } 104 105 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; 116 else 117 mii->mii_media_active |= IFM_NONE; 118 } else 119 mii->mii_media_active = mii_media_from_bmcr(bmcr); 120 } 121