urlphy.c revision 1.3
1 /* $NetBSD: urlphy.c,v 1.3 2002/09/27 02:24:30 thorpej Exp $ */ 2 /* 3 * Copyright (c) 2001, 2002 4 * Shingo WATANABE <nabe (at) nabechan.org>. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Shingo WATANABE. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 /* 36 * driver for Realtek RL8150L internal phy 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: urlphy.c,v 1.3 2002/09/27 02:24:30 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <sys/socket.h> 47 48 #include <net/if.h> 49 #include <net/if_media.h> 50 51 #include <dev/mii/mii.h> 52 #include <dev/mii/miivar.h> 53 #include <dev/mii/miidevs.h> 54 #include <dev/mii/urlphyreg.h> 55 56 #define URLPHY_DEBUG 0 57 #ifdef URLPHY_DEBUG 58 #define DPRINTF(x) if (urlphydebug) printf x 59 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x 60 int urlphydebug = URLPHY_DEBUG; 61 #else 62 #define DPRINTF(x) 63 #define DPRINTFN(n,x) 64 #endif 65 66 int urlphy_match(struct device *, struct cfdata *, void *); 67 void urlphy_attach(struct device *, struct device *, void *); 68 69 struct cfattach urlphy_ca = { 70 sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach, 71 mii_phy_activate 72 }; 73 74 int urlphy_service(struct mii_softc *, struct mii_data *, int); 75 void urlphy_status(struct mii_softc *); 76 77 const struct mii_phy_funcs urlphy_funcs = { 78 urlphy_service, urlphy_status, mii_phy_reset, 79 }; 80 81 int 82 urlphy_match(struct device *parent, struct cfdata *match, void *aux) 83 { 84 struct mii_attach_args *ma = aux; 85 86 /* 87 * RTL8150 reports OUT == 0, MODEL == 0 88 */ 89 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 90 MII_MODEL(ma->mii_id2) != 0) 91 return (0); 92 93 /* 94 * Make sure the parent is an 'url' device. 95 */ 96 if (strcmp(parent->dv_cfdata->cf_name, "url") != 0) 97 return(0); 98 99 return (10); 100 } 101 102 void 103 urlphy_attach(struct device *parent, struct device *self, void *aux) 104 { 105 struct mii_softc *sc = (struct mii_softc *)self; 106 struct mii_attach_args *ma = aux; 107 struct mii_data *mii = ma->mii_data; 108 109 printf(": Realtek RTL8150L internal media interface\n"); 110 111 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 112 113 sc->mii_inst = mii->mii_instance; 114 sc->mii_phy = ma->mii_phyno; 115 sc->mii_funcs = &urlphy_funcs; 116 sc->mii_pdata = mii; 117 sc->mii_flags = mii->mii_flags; 118 sc->mii_anegticks = 10; 119 120 /* Don't do loopback on this PHY. */ 121 sc->mii_flags |= MIIF_NOLOOP; 122 /* Don't do isolate on this PHY. */ 123 sc->mii_flags |= MIIF_NOISOLATE; 124 125 if (mii->mii_instance != 0) { 126 printf("%s: ignoring this PHY, non-zero instance\n", 127 sc->mii_dev.dv_xname); 128 return; 129 } 130 PHY_RESET(sc); 131 132 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 133 printf("%s: ", sc->mii_dev.dv_xname); 134 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 135 printf("no media present"); 136 else 137 mii_phy_add_media(sc); 138 printf("\n"); 139 } 140 141 int 142 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 143 { 144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 145 int reg; 146 147 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 148 149 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 150 return (ENXIO); 151 152 switch (cmd) { 153 case MII_POLLSTAT: 154 /* 155 * If we're not polling our PHY instance, just return. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return (0); 159 break; 160 161 case MII_MEDIACHG: 162 /* 163 * If we're not currently selected, just return. 164 */ 165 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 166 return (0); 167 168 /* If the interface is not up, don't do anything. */ 169 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 170 break; 171 172 mii_phy_setmedia(sc); 173 break; 174 175 case MII_TICK: 176 /* 177 * If we're not currently selected, just return. 178 */ 179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 180 return (0); 181 182 /* Just bail now if the interface is down. */ 183 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 184 return (0); 185 186 /* 187 * If we're not doing autonegotiation, we don't need to do 188 * any extra work here. However, we need to check the link 189 * status so we can generate an announcement if the status 190 * changes. 191 */ 192 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 193 return (0); 194 195 /* Read the status register twice; MSR_LINK is latch-low. */ 196 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 197 if (reg & URLPHY_MSR_LINK) 198 return (0); 199 200 /* 201 * Only retry autonegotiation every N seconds. 202 */ 203 KASSERT(sc->mii_anegticks != 0); 204 if (++sc->mii_ticks != sc->mii_anegticks) 205 return (0); 206 207 sc->mii_ticks = 0; 208 PHY_RESET(sc); 209 210 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 211 return (0); 212 213 break; 214 215 case MII_DOWN: 216 mii_phy_down(sc); 217 return (0); 218 } 219 220 /* Update the media status. */ 221 mii_phy_status(sc); 222 223 /* Callback if something changed. */ 224 mii_phy_update(sc, cmd); 225 226 return (0); 227 } 228 229 void 230 urlphy_status(struct mii_softc *sc) 231 { 232 struct mii_data *mii = sc->mii_pdata; 233 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 234 int msr, bmsr, bmcr; 235 236 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 237 238 mii->mii_media_status = IFM_AVALID; 239 mii->mii_media_active = IFM_ETHER; 240 241 /* 242 * The link status bit is not exist in the BMSR register, 243 * so we need to read the MSR register to get link status. 244 */ 245 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 246 if (msr & URLPHY_MSR_LINK) 247 mii->mii_media_status |= IFM_ACTIVE; 248 249 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __FUNCTION__, 250 mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); 251 252 bmcr = PHY_READ(sc, MII_BMCR); 253 if (bmcr & BMCR_AUTOEN) { 254 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 255 if ((bmsr & BMSR_ACOMP) == 0) { 256 /* Erg, still trying, I guess... */ 257 mii->mii_media_active |= IFM_NONE; 258 return; 259 } 260 261 if (msr & URLPHY_MSR_SPEED_100) 262 mii->mii_media_active |= IFM_100_TX; 263 else 264 mii->mii_media_active |= IFM_10_T; 265 if (msr & URLPHY_MSR_DUPLEX) 266 mii->mii_media_active |= IFM_FDX; 267 } else 268 mii->mii_media_active = ife->ifm_media; 269 } 270
Indexes created Tue Sep 23 22:09:46 GMT 2025