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/param.h> 48 #include <sys/systm.h> 49 #include <sys/socket.h> 50 #include <sys/module.h> 51 #include <sys/bus.h> 52 53 #include <net/if.h> 54 #include <net/if_media.h> 55 56 #include <dev/mii/mii.h> 57 #include <dev/mii/miivar.h> 58 59 #include "miibus_if.h" 60 61 /* 62 * Media status subroutine. If a PHY driver does media detection simply 63 * by decoding the NWay autonegotiation, use this routine. 64 */ 65 void 66 ukphy_status(struct mii_softc *phy) 67 { 68 struct mii_data *mii = phy->mii_pdata; 69 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 70 int bmsr, bmcr, anlpar, gtcr, gtsr; 71 72 mii->mii_media_status = IFM_AVALID; 73 mii->mii_media_active = IFM_ETHER; 74 75 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 76 if (bmsr & BMSR_LINK) 77 mii->mii_media_status |= IFM_ACTIVE; 78 79 bmcr = PHY_READ(phy, MII_BMCR); 80 if (bmcr & BMCR_ISO) { 81 mii->mii_media_active |= IFM_NONE; 82 mii->mii_media_status = 0; 83 return; 84 } 85 86 if (bmcr & BMCR_LOOP) 87 mii->mii_media_active |= IFM_LOOP; 88 89 if (bmcr & BMCR_AUTOEN) { 90 /* 91 * NWay autonegotiation takes the highest-order common 92 * bit of the ANAR and ANLPAR (i.e. best media advertised 93 * both by us and our link partner). 94 */ 95 if ((bmsr & BMSR_ACOMP) == 0) { 96 /* Erg, still trying, I guess... */ 97 mii->mii_media_active |= IFM_NONE; 98 return; 99 } 100 101 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 102 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && 103 (phy->mii_extcapabilities & 104 (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) { 105 gtcr = PHY_READ(phy, MII_100T2CR); 106 gtsr = PHY_READ(phy, MII_100T2SR); 107 } else 108 gtcr = gtsr = 0; 109 110 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) 111 mii->mii_media_active |= IFM_1000_T|IFM_FDX; 112 else if ((gtcr & GTCR_ADV_1000THDX) && 113 (gtsr & GTSR_LP_1000THDX)) 114 mii->mii_media_active |= IFM_1000_T; 115 else if (anlpar & ANLPAR_TX_FD) 116 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 117 else if (anlpar & ANLPAR_T4) 118 mii->mii_media_active |= IFM_100_T4; 119 else if (anlpar & ANLPAR_TX) 120 mii->mii_media_active |= IFM_100_TX; 121 else if (anlpar & ANLPAR_10_FD) 122 mii->mii_media_active |= IFM_10_T|IFM_FDX; 123 else if (anlpar & ANLPAR_10) 124 mii->mii_media_active |= IFM_10_T; 125 else 126 mii->mii_media_active |= IFM_NONE; 127 } else 128 mii->mii_media_active = ife->ifm_media; 129 } 130