1 /* $OpenBSD: ukphy_subr.c,v 1.10 2008/10/24 16:50:01 brad Exp $ */ 2 /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center, and by Frank van der Linden. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Subroutines shared by the ukphy driver and other PHY drivers. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <sys/socket.h> 43 44 #include <net/if.h> 45 #include <net/if_media.h> 46 47 #include <dev/mii/mii.h> 48 #include <dev/mii/miivar.h> 49 50 /* 51 * Media status subroutine. If a PHY driver does media detection simply 52 * by decoding the NWay autonegotiation, use this routine. 53 */ 54 void 55 ukphy_status(struct mii_softc *phy) 56 { 57 struct mii_data *mii = phy->mii_pdata; 58 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 59 int bmsr, bmcr, anlpar, gtcr, gtsr; 60 61 mii->mii_media_status = IFM_AVALID; 62 mii->mii_media_active = IFM_ETHER; 63 64 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 65 if (bmsr & BMSR_LINK) 66 mii->mii_media_status |= IFM_ACTIVE; 67 68 bmcr = PHY_READ(phy, MII_BMCR); 69 if (bmcr & BMCR_ISO) { 70 mii->mii_media_active |= IFM_NONE; 71 mii->mii_media_status = 0; 72 return; 73 } 74 75 if (bmcr & BMCR_LOOP) 76 mii->mii_media_active |= IFM_LOOP; 77 78 if (bmcr & BMCR_AUTOEN) { 79 /* 80 * NWay autonegotiation takes the highest-order common 81 * bit of the ANAR and ANLPAR (i.e. best media advertised 82 * both by us and our link partner). 83 */ 84 if ((bmsr & BMSR_ACOMP) == 0) { 85 /* Erg, still trying, I guess... */ 86 mii->mii_media_active |= IFM_NONE; 87 return; 88 } 89 90 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 91 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && 92 (phy->mii_extcapabilities & 93 (EXTSR_1000THDX|EXTSR_1000TFDX)) != 0) { 94 gtcr = PHY_READ(phy, MII_100T2CR); 95 gtsr = PHY_READ(phy, MII_100T2SR); 96 } else 97 gtcr = gtsr = 0; 98 99 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) 100 mii->mii_media_active |= IFM_1000_T|IFM_FDX; 101 else if ((gtcr & GTCR_ADV_1000THDX) && 102 (gtsr & GTSR_LP_1000THDX)) 103 mii->mii_media_active |= IFM_1000_T|IFM_HDX; 104 else if (anlpar & ANLPAR_TX_FD) 105 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 106 else if (anlpar & ANLPAR_T4) 107 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 108 else if (anlpar & ANLPAR_TX) 109 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 110 else if (anlpar & ANLPAR_10_FD) 111 mii->mii_media_active |= IFM_10_T|IFM_FDX; 112 else if (anlpar & ANLPAR_10) 113 mii->mii_media_active |= IFM_10_T|IFM_HDX; 114 else 115 mii->mii_media_active |= IFM_NONE; 116 117 if (mii->mii_media_active & IFM_FDX) 118 mii->mii_media_active |= mii_phy_flowstatus(phy); 119 120 if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) && 121 (gtsr & GTSR_MS_RES)) 122 mii->mii_media_active |= IFM_ETH_MASTER; 123 } else 124 mii->mii_media_active = ife->ifm_media; 125 } 126