1 /* $NetBSD: ukphy_subr.c,v 1.13 2014/06/16 16:48:16 msaitoh 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Subroutines shared by the ukphy driver and other PHY drivers. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: ukphy_subr.c,v 1.13 2014/06/16 16:48:16 msaitoh Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/socket.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 /* 53 * Media status subroutine. If a PHY driver does media detection simply 54 * by decoding the NWay autonegotiation, use this routine. 55 */ 56 void 57 ukphy_status(struct mii_softc *phy) 58 { 59 struct mii_data *mii = phy->mii_pdata; 60 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 61 int bmsr, bmcr, anlpar, gtcr, gtsr; 62 63 mii->mii_media_status = IFM_AVALID; 64 mii->mii_media_active = IFM_ETHER; 65 66 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 67 if (bmsr & BMSR_LINK) 68 mii->mii_media_status |= IFM_ACTIVE; 69 70 bmcr = PHY_READ(phy, MII_BMCR); 71 if (bmcr & BMCR_ISO) { 72 mii->mii_media_active |= IFM_NONE; 73 mii->mii_media_status = 0; 74 return; 75 } 76 77 if (bmcr & BMCR_LOOP) 78 mii->mii_media_active |= IFM_LOOP; 79 80 if (bmcr & BMCR_AUTOEN) { 81 /* 82 * NWay autonegotiation takes the highest-order common 83 * bit of the ANAR and ANLPAR (i.e. best media advertised 84 * both by us and our link partner). 85 */ 86 if ((bmsr & BMSR_ACOMP) == 0) { 87 /* Erg, still trying, I guess... */ 88 mii->mii_media_active |= IFM_NONE; 89 return; 90 } 91 92 anlpar = PHY_READ(phy, MII_ANAR) & PHY_READ(phy, MII_ANLPAR); 93 if ((phy->mii_flags & MIIF_HAVE_GTCR) != 0 && 94 (phy->mii_extcapabilities & 95 (EXTSR_1000THDX | EXTSR_1000TFDX)) != 0) { 96 gtcr = PHY_READ(phy, MII_100T2CR); 97 gtsr = PHY_READ(phy, MII_100T2SR); 98 } else 99 gtcr = gtsr = 0; 100 101 if ((gtcr & GTCR_ADV_1000TFDX) && (gtsr & GTSR_LP_1000TFDX)) 102 mii->mii_media_active |= IFM_1000_T|IFM_FDX; 103 else if ((gtcr & GTCR_ADV_1000THDX) && 104 (gtsr & GTSR_LP_1000THDX)) 105 mii->mii_media_active |= IFM_1000_T|IFM_HDX; 106 else if (anlpar & ANLPAR_TX_FD) 107 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 108 else if (anlpar & ANLPAR_T4) 109 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 110 else if (anlpar & ANLPAR_TX) 111 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 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|IFM_HDX; 116 else 117 mii->mii_media_active |= IFM_NONE; 118 119 if ((mii->mii_media_active & IFM_1000_T) && 120 (gtsr & GTSR_MS_RES)) 121 mii->mii_media_active |= IFM_ETH_MASTER; 122 123 if (mii->mii_media_active & IFM_FDX) 124 mii->mii_media_active |= mii_phy_flowstatus(phy); 125 } else 126 mii->mii_media_active = ife->ifm_media; 127 } 128