mii_physubr.c revision 1.5
1 /* $NetBSD: mii_physubr.c,v 1.5 1999/08/03 19:41:49 drochner 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 void mii_phy_auto_timeout __P((void *)); 58 59 int 60 mii_phy_auto(mii, waitfor) 61 struct mii_softc *mii; 62 int waitfor; 63 { 64 int bmsr, i; 65 66 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 67 PHY_WRITE(mii, MII_ANAR, 68 BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA); 69 PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); 70 } 71 72 if (waitfor) { 73 /* Wait 500ms for it to complete. */ 74 for (i = 0; i < 500; i++) { 75 if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP) 76 return (0); 77 delay(1000); 78 #if 0 79 if ((bmsr & BMSR_ACOMP) == 0) 80 printf("%s: autonegotiation failed to complete\n", 81 mii->mii_dev.dv_xname); 82 #endif 83 } 84 85 /* 86 * Don't need to worry about clearing MIIF_DOINGAUTO. 87 * If that's set, a timeout is pending, and it will 88 * clear the flag. 89 */ 90 return (EIO); 91 } 92 93 /* 94 * Just let it finish asynchronously. This is for the benefit of 95 * the tick handler driving autonegotiation. Don't want 500ms 96 * delays all the time while the system is running! 97 */ 98 if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) { 99 mii->mii_flags |= MIIF_DOINGAUTO; 100 timeout(mii_phy_auto_timeout, mii, hz >> 1); 101 } 102 return (EJUSTRETURN); 103 } 104 105 void 106 mii_phy_auto_timeout(arg) 107 void *arg; 108 { 109 struct mii_softc *mii = arg; 110 int s, bmsr; 111 112 s = splnet(); 113 mii->mii_flags &= ~MIIF_DOINGAUTO; 114 bmsr = PHY_READ(mii, MII_BMSR); 115 #if 0 116 if ((bmsr & BMSR_ACOMP) == 0) 117 printf("%s: autonegotiation failed to complete\n", 118 sc->sc_dev.dv_xname); 119 #endif 120 121 /* Update the media status. */ 122 (void) (*mii->mii_service)(mii, mii->mii_pdata, MII_POLLSTAT); 123 splx(s); 124 } 125 126 void 127 mii_phy_reset(mii) 128 struct mii_softc *mii; 129 { 130 int reg, i; 131 132 if (mii->mii_flags & MIIF_NOISOLATE) 133 reg = BMCR_RESET; 134 else 135 reg = BMCR_RESET | BMCR_ISO; 136 PHY_WRITE(mii, MII_BMCR, reg); 137 138 /* Wait 100ms for it to complete. */ 139 for (i = 0; i < 100; i++) { 140 reg = PHY_READ(mii, MII_BMCR); 141 if ((reg & BMCR_RESET) == 0) 142 break; 143 delay(1000); 144 } 145 146 if (mii->mii_inst != 0 && ((mii->mii_flags & MIIF_NOISOLATE) == 0)) 147 PHY_WRITE(mii, MII_BMCR, reg | BMCR_ISO); 148 } 149 150 /* 151 * Given an ifmedia word, return the corresponding ANAR value. 152 */ 153 int 154 mii_anar(media) 155 int media; 156 { 157 int rv; 158 159 switch (media & (IFM_TMASK|IFM_NMASK|IFM_FDX)) { 160 case IFM_ETHER|IFM_10_T: 161 rv = ANAR_10|ANAR_CSMA; 162 break; 163 case IFM_ETHER|IFM_10_T|IFM_FDX: 164 rv = ANAR_10_FD|ANAR_CSMA; 165 break; 166 case IFM_ETHER|IFM_100_TX: 167 rv = ANAR_TX|ANAR_CSMA; 168 break; 169 case IFM_ETHER|IFM_100_TX|IFM_FDX: 170 rv = ANAR_TX_FD|ANAR_CSMA; 171 break; 172 case IFM_ETHER|IFM_100_T4: 173 rv = ANAR_T4|ANAR_CSMA; 174 break; 175 default: 176 rv = 0; 177 break; 178 } 179 180 return (rv); 181 } 182 183 /* 184 * Given a BMCR value, return the corresponding ifmedia word. 185 */ 186 int 187 mii_media_from_bmcr(bmcr) 188 int bmcr; 189 { 190 int rv = IFM_ETHER; 191 192 if (bmcr & BMCR_S100) 193 rv |= IFM_100_TX; 194 else 195 rv |= IFM_10_T; 196 if (bmcr & BMCR_FDX) 197 rv |= IFM_FDX; 198 199 return (rv); 200 } 201 202 /* 203 * Initialize generic PHY media based on BMSR, called when a PHY is 204 * attached. We expect to be set up to print a comma-separated list 205 * of media names. Does not print a newline. 206 */ 207 void 208 mii_add_media(mii, bmsr, instance) 209 struct mii_data *mii; 210 int bmsr, instance; 211 { 212 const char *sep = ""; 213 214 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 215 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 216 217 if (bmsr & BMSR_10THDX) { 218 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, instance), 0); 219 PRINT("10baseT"); 220 } 221 if (bmsr & BMSR_10TFDX) { 222 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, instance), 223 BMCR_FDX); 224 PRINT("10baseT-FDX"); 225 } 226 if (bmsr & BMSR_100TXHDX) { 227 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, instance), 228 BMCR_S100); 229 PRINT("100baseTX"); 230 } 231 if (bmsr & BMSR_100TXFDX) { 232 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, instance), 233 BMCR_S100|BMCR_FDX); 234 PRINT("100baseTX-FDX"); 235 } 236 if (bmsr & BMSR_100T4) { 237 /* 238 * XXX How do you enable 100baseT4? I assume we set 239 * XXX BMCR_S100 and then assume the PHYs will take 240 * XXX watever action is necessary to switch themselves 241 * XXX into T4 mode. 242 */ 243 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, instance), 244 BMCR_S100); 245 PRINT("100baseT4"); 246 } 247 if (bmsr & BMSR_ANEG) { 248 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, instance), 249 BMCR_AUTOEN); 250 PRINT("auto"); 251 } 252 #undef ADD 253 #undef PRINT 254 } 255
Indexes created Mon Sep 29 21:09:56 GMT 2025