1 /* $NetBSD: ukphy_subr.c,v 1.2 1998/11/05 04:08:02 thorpej Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 1998 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 11 * NASA Ames Research Center, and by Frank van der Linden. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 /* 37 * Subroutines shared by the ukphy driver and other PHY drivers. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/socket.h> 43 #include <sys/module.h> 44 #include <sys/bus.h> 45 46 #include <net/if.h> 47 #include <net/if_media.h> 48 49 #include <dev/mii/mii.h> 50 #include <dev/mii/miivar.h> 51 52 #include "miibus_if.h" 53 54 /* 55 * Media status subroutine. If a PHY driver does media detection simply 56 * by decoding the NWay autonegotiation, use this routine. 57 */ 58 void 59 ukphy_status(struct mii_softc *phy) 60 { 61 struct mii_data *mii = phy->mii_pdata; 62 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 63 int bmsr, bmcr, anlpar, gtcr, gtsr; 64 65 mii->mii_media_status = IFM_AVALID; 66 mii->mii_media_active = IFM_ETHER; 67 68 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 69 if (bmsr & BMSR_LINK) 70 mii->mii_media_status |= IFM_ACTIVE; 71 72 bmcr = PHY_READ(phy, MII_BMCR); 73 if (bmcr & BMCR_ISO) { 74 mii->mii_media_active |= IFM_NONE; 75 mii->mii_media_status = 0; 76 return; 77 } 78 79 if (bmcr & BMCR_LOOP) 80 mii->mii_media_active |= IFM_LOOP; 81 82 if (bmcr & BMCR_AUTOEN) { 83 /* 84 * NWay autonegotiation takes the highest-order common 85 * bit of the ANAR and ANLPAR (i.e. best media advertised 86 * both by us and our link partner). 87 */ 88 if ((bmsr & BMSR_ACOMP) == 0) { 89 /* Erg, still trying, I guess... */ 90 mii->mii_media_active |= IFM_NONE; 91 return; 92 } 93 94 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 95 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && 96 (phy->mii_extcapabilities & 97 (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) { 98 gtcr = PHY_READ(phy, MII_100T2CR); 99 gtsr = PHY_READ(phy, MII_100T2SR); 100 } else 101 gtcr = gtsr = 0; 102 103 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) 104 mii->mii_media_active |= IFM_1000_T|IFM_FDX; 105 else if ((gtcr & GTCR_ADV_1000THDX) && 106 (gtsr & GTSR_LP_1000THDX)) 107 mii->mii_media_active |= IFM_1000_T|IFM_HDX; 108 else if (anlpar & ANLPAR_TX_FD) 109 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 110 else if (anlpar & ANLPAR_T4) 111 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 112 else if (anlpar & ANLPAR_TX) 113 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 114 else if (anlpar & ANLPAR_10_FD) 115 mii->mii_media_active |= IFM_10_T|IFM_FDX; 116 else if (anlpar & ANLPAR_10) 117 mii->mii_media_active |= IFM_10_T|IFM_HDX; 118 else 119 mii->mii_media_active |= IFM_NONE; 120 121 if ((mii->mii_media_active & IFM_1000_T) != 0 && 122 (gtsr & GTSR_MS_RES) != 0) 123 mii->mii_media_active |= IFM_ETH_MASTER; 124 125 if ((mii->mii_media_active & IFM_FDX) != 0) 126 mii->mii_media_active |= mii_phy_flowstatus(phy); 127 } else 128 mii->mii_media_active = ife->ifm_media; 129 } 130