gentbi.c revision 1.20.2.1
1 /* $NetBSD: gentbi.c,v 1.20.2.1 2008/05/18 12:34:13 yamt Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2001 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 * 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 * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by Manuel Bouyer. 47 * 4. The name of the author may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * Driver for generic ten-bit (1000BASE-SX) interfaces, built in to 64 * many Gigabit Ethernet chips. 65 * 66 * All we have to do here is correctly report speed and duplex. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: gentbi.c,v 1.20.2.1 2008/05/18 12:34:13 yamt Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/kernel.h> 75 #include <sys/device.h> 76 #include <sys/socket.h> 77 #include <sys/errno.h> 78 79 #include <net/if.h> 80 #include <net/if_media.h> 81 82 #include <dev/mii/mii.h> 83 #include <dev/mii/miivar.h> 84 #include <dev/mii/miidevs.h> 85 86 static int gentbimatch(device_t, cfdata_t, void *); 87 static void gentbiattach(device_t, device_t, void *); 88 89 CFATTACH_DECL_NEW(gentbi, sizeof(struct mii_softc), 90 gentbimatch, gentbiattach, mii_phy_detach, mii_phy_activate); 91 92 static int gentbi_service(struct mii_softc *, struct mii_data *, int); 93 static void gentbi_status(struct mii_softc *); 94 95 static const struct mii_phy_funcs gentbi_funcs = { 96 gentbi_service, gentbi_status, mii_phy_reset, 97 }; 98 99 static int 100 gentbimatch(device_t parent, cfdata_t match, void *aux) 101 { 102 struct mii_attach_args *ma = aux; 103 struct mii_data *mii = ma->mii_data; 104 int bmsr, extsr; 105 106 /* 107 * We match as a generic TBI if: 108 * 109 * - There is no media in the BMSR. 110 * - EXTSR has only 1000X. 111 */ 112 bmsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_BMSR); 113 if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0) 114 return (0); 115 116 extsr = (*mii->mii_readreg)(parent, ma->mii_phyno, MII_EXTSR); 117 if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX)) 118 return (0); 119 120 if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) { 121 /* 122 * We think this is a generic TBI. Return a match 123 * priority higher than ukphy, but lower than what 124 * specific drivers will return. 125 */ 126 return (2); 127 } 128 129 return (0); 130 } 131 132 static void 133 gentbiattach(device_t parent, device_t self, void *aux) 134 { 135 struct mii_softc *sc = device_private(self); 136 struct mii_attach_args *ma = aux; 137 struct mii_data *mii = ma->mii_data; 138 139 aprint_naive(": Media interface\n"); 140 aprint_normal(": Generic ten-bit interface, rev. %d\n", 141 MII_REV(ma->mii_id2)); 142 143 sc->mii_dev = self; 144 sc->mii_inst = mii->mii_instance; 145 sc->mii_phy = ma->mii_phyno; 146 sc->mii_funcs = &gentbi_funcs; 147 sc->mii_pdata = mii; 148 sc->mii_flags = ma->mii_flags; 149 sc->mii_anegticks = MII_ANEGTICKS; 150 151 PHY_RESET(sc); 152 153 /* 154 * Mask out all media in the BMSR. We only are really interested 155 * in "auto". 156 */ 157 sc->mii_capabilities = 158 PHY_READ(sc, MII_BMSR) & ma->mii_capmask & ~BMSR_MEDIAMASK; 159 if (sc->mii_capabilities & BMSR_EXTSTAT) 160 sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); 161 162 aprint_normal_dev(self, ""); 163 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 && 164 (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) 165 aprint_error("no media present"); 166 else 167 mii_phy_add_media(sc); 168 aprint_normal("\n"); 169 170 if (!pmf_device_register(self, NULL, mii_phy_resume)) 171 aprint_error_dev(self, "couldn't establish power handler\n"); 172 } 173 174 static int 175 gentbi_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 176 { 177 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 178 int reg; 179 180 switch (cmd) { 181 case MII_POLLSTAT: 182 /* 183 * If we're not polling our PHY instance, just return. 184 */ 185 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 186 return (0); 187 break; 188 189 case MII_MEDIACHG: 190 /* 191 * If the media indicates a different PHY instance, 192 * isolate ourselves. 193 */ 194 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 195 reg = PHY_READ(sc, MII_BMCR); 196 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 197 return (0); 198 } 199 200 /* 201 * If the interface is not up, don't do anything. 202 */ 203 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 204 break; 205 206 mii_phy_setmedia(sc); 207 break; 208 209 case MII_TICK: 210 /* 211 * If we're not currently selected, just return. 212 */ 213 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 214 return (0); 215 216 if (mii_phy_tick(sc) == EJUSTRETURN) 217 return (0); 218 break; 219 220 case MII_DOWN: 221 mii_phy_down(sc); 222 return (0); 223 } 224 225 /* Update the media status. */ 226 mii_phy_status(sc); 227 228 /* Callback if something changed. */ 229 mii_phy_update(sc, cmd); 230 return (0); 231 } 232 233 static void 234 gentbi_status(struct mii_softc *sc) 235 { 236 struct mii_data *mii = sc->mii_pdata; 237 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 238 int bmsr, bmcr, anlpar; 239 240 mii->mii_media_status = IFM_AVALID; 241 mii->mii_media_active = IFM_ETHER; 242 243 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 244 245 if (bmsr & BMSR_LINK) 246 mii->mii_media_status |= IFM_ACTIVE; 247 248 bmcr = PHY_READ(sc, MII_BMCR); 249 if (bmcr & BMCR_ISO) { 250 mii->mii_media_active |= IFM_NONE; 251 mii->mii_media_status = 0; 252 return; 253 } 254 255 if (bmcr & BMCR_LOOP) 256 mii->mii_media_active |= IFM_LOOP; 257 258 if (bmcr & BMCR_AUTOEN) { 259 /* 260 * The media status bits are only valid of autonegotiation 261 * has completed (or it's disabled). 262 */ 263 if ((bmsr & BMSR_ACOMP) == 0) { 264 /* Erg, still trying, I guess... */ 265 mii->mii_media_active |= IFM_NONE; 266 return; 267 } 268 269 /* 270 * The media is always 1000baseSX. Check the ANLPAR to 271 * see if we're doing full-duplex. 272 */ 273 mii->mii_media_active |= IFM_1000_SX; 274 275 anlpar = PHY_READ(sc, MII_ANLPAR); 276 if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 && 277 (anlpar & ANLPAR_X_FD) != 0) 278 mii->mii_media_active |= 279 IFM_FDX | mii_phy_flowstatus(sc); 280 } else 281 mii->mii_media_active = ife->ifm_media; 282 } 283
Indexes created Wed Oct 29 09:09:48 GMT 2025