mii_physubr.c revision 1.8
1 /* $NetBSD: mii_physubr.c,v 1.8 1999/11/12 18:13:00 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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. 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 /* 41 * Subroutines common to all PHYs. 42 */ 43 44 #include <sys/param.h> 45 #include <sys/device.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/socket.h> 49 #include <sys/errno.h> 50 51 #include <net/if.h> 52 #include <net/if_media.h> 53 54 #include <dev/mii/mii.h> 55 #include <dev/mii/miivar.h> 56 57 /* 58 * Media to register setting conversion table. Order matters. 59 */ 60 const struct mii_media mii_media_table[] = { 61 { BMCR_ISO, ANAR_CSMA }, /* None */ 62 { 0, ANAR_CSMA|ANAR_10 }, /* 10baseT */ 63 { BMCR_FDX, ANAR_CSMA|ANAR_10_FD }, /* 10baseT-FDX */ 64 { BMCR_S100, ANAR_CSMA|ANAR_T4 }, /* 100baseT4 */ 65 { BMCR_S100, ANAR_CSMA|ANAR_TX }, /* 100baseTX */ 66 { BMCR_S100|BMCR_FDX, ANAR_CSMA|ANAR_TX_FD }, /* 100baseTX-FDX */ 67 }; 68 69 void mii_phy_auto_timeout __P((void *)); 70 71 void 72 mii_phy_setmedia(sc) 73 struct mii_softc *sc; 74 { 75 struct mii_data *mii = sc->mii_pdata; 76 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 77 int bmcr, anar; 78 79 /* 80 * Table index is stored in the media entry. 81 */ 82 83 #ifdef DIAGNOSTIC 84 if (ife->ifm_data < 0 || ife->ifm_data >= MII_NMEDIA) 85 panic("mii_phy_setmedia"); 86 #endif 87 88 anar = mii_media_table[ife->ifm_data].mm_anar; 89 bmcr = mii_media_table[ife->ifm_data].mm_bmcr; 90 91 if (ife->ifm_media & IFM_LOOP) 92 bmcr |= BMCR_LOOP; 93 94 PHY_WRITE(sc, MII_ANAR, anar); 95 PHY_WRITE(sc, MII_BMCR, bmcr); 96 } 97 98 int 99 mii_phy_auto(sc, waitfor) 100 struct mii_softc *sc; 101 int waitfor; 102 { 103 int bmsr, i; 104 105 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 106 PHY_WRITE(sc, MII_ANAR, 107 BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA); 108 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 109 } 110 111 if (waitfor) { 112 /* Wait 500ms for it to complete. */ 113 for (i = 0; i < 500; i++) { 114 if ((bmsr = PHY_READ(sc, MII_BMSR)) & BMSR_ACOMP) 115 return (0); 116 delay(1000); 117 } 118 119 /* 120 * Don't need to worry about clearing MIIF_DOINGAUTO. 121 * If that's set, a timeout is pending, and it will 122 * clear the flag. 123 */ 124 return (EIO); 125 } 126 127 /* 128 * Just let it finish asynchronously. This is for the benefit of 129 * the tick handler driving autonegotiation. Don't want 500ms 130 * delays all the time while the system is running! 131 */ 132 if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) { 133 sc->mii_flags |= MIIF_DOINGAUTO; 134 timeout(mii_phy_auto_timeout, sc, hz >> 1); 135 } 136 return (EJUSTRETURN); 137 } 138 139 void 140 mii_phy_auto_timeout(arg) 141 void *arg; 142 { 143 struct mii_softc *sc = arg; 144 int s, bmsr; 145 146 s = splnet(); 147 sc->mii_flags &= ~MIIF_DOINGAUTO; 148 bmsr = PHY_READ(sc, MII_BMSR); 149 150 /* Update the media status. */ 151 (void) (*sc->mii_service)(sc, sc->mii_pdata, MII_POLLSTAT); 152 splx(s); 153 } 154 155 void 156 mii_phy_reset(sc) 157 struct mii_softc *sc; 158 { 159 int reg, i; 160 161 if (sc->mii_flags & MIIF_NOISOLATE) 162 reg = BMCR_RESET; 163 else 164 reg = BMCR_RESET | BMCR_ISO; 165 PHY_WRITE(sc, MII_BMCR, reg); 166 167 /* Wait 100ms for it to complete. */ 168 for (i = 0; i < 100; i++) { 169 reg = PHY_READ(sc, MII_BMCR); 170 if ((reg & BMCR_RESET) == 0) 171 break; 172 delay(1000); 173 } 174 175 if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0)) 176 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 177 } 178 179 void 180 mii_phy_down(sc) 181 struct mii_softc *sc; 182 { 183 184 if (sc->mii_flags & MIIF_DOINGAUTO) { 185 sc->mii_flags &= ~MIIF_DOINGAUTO; 186 untimeout(mii_phy_auto_timeout, sc); 187 } 188 } 189 190 /* 191 * Initialize generic PHY media based on BMSR, called when a PHY is 192 * attached. We expect to be set up to print a comma-separated list 193 * of media names. Does not print a newline. 194 */ 195 void 196 mii_add_media(sc) 197 struct mii_softc *sc; 198 { 199 struct mii_data *mii = sc->mii_pdata; 200 const char *sep = ""; 201 202 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 203 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 204 205 if ((sc->mii_flags & MIIF_NOISOLATE) == 0) 206 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 207 MII_MEDIA_NONE); 208 209 if (sc->mii_capabilities & BMSR_10THDX) { 210 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), 211 MII_MEDIA_10_T); 212 #if 0 213 if ((sc->mii_flags & MIIF_NOLOOP) == 0) 214 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_LOOP, 215 sc->mii_inst), MII_MEDIA_10_T); 216 #endif 217 PRINT("10baseT"); 218 } 219 if (sc->mii_capabilities & BMSR_10TFDX) { 220 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst), 221 MII_MEDIA_10_T_FDX); 222 PRINT("10baseT-FDX"); 223 } 224 if (sc->mii_capabilities & BMSR_100TXHDX) { 225 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), 226 MII_MEDIA_100_TX); 227 #if 0 228 if ((sc->mii_flags & MIIF_NOLOOP) == 0) 229 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, 230 sc->mii_inst), MII_MEDIA_100_TX); 231 #endif 232 PRINT("100baseTX"); 233 } 234 if (sc->mii_capabilities & BMSR_100TXFDX) { 235 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst), 236 MII_MEDIA_100_TX_FDX); 237 PRINT("100baseTX-FDX"); 238 } 239 if (sc->mii_capabilities & BMSR_100T4) { 240 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst), 241 MII_MEDIA_100_T4); 242 #if 0 243 if ((sc->mii_flags & MIIF_NOLOOP) == 0) 244 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, IFM_LOOP, 245 sc->mii_inst), MII_MEDIA_100_T4); 246 #endif 247 PRINT("100baseT4"); 248 } 249 if (sc->mii_capabilities & BMSR_ANEG) { 250 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 251 MII_NMEDIA); /* intentionally invalid index */ 252 PRINT("auto"); 253 } 254 #undef ADD 255 #undef PRINT 256 } 257
Indexes created Mon Sep 29 21:09:56 GMT 2025