| 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 | |