1 /* $OpenBSD: urlphy.c,v 1.2 2002/05/07 19:50:01 nate Exp $ */ 2 /* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */ 3 /* 4 * Copyright (c) 2001, 2002 5 * Shingo WATANABE <nabe@nabechan.org>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Shingo WATANABE. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 /* 37 * driver for Realtek RL8150L internal phy 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/device.h> 44 #include <sys/malloc.h> 45 #include <sys/socket.h> 46 47 #include <net/if.h> 48 #include <net/if_media.h> 49 50 #include <dev/mii/mii.h> 51 #include <dev/mii/miivar.h> 52 #include <dev/mii/miidevs.h> 53 #include <dev/mii/urlphyreg.h> 54 55 #define URLPHY_DEBUG 0 56 #ifdef URLPHY_DEBUG 57 #define DPRINTF(x) if (urlphydebug) printf x 58 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x 59 int urlphydebug = URLPHY_DEBUG; 60 #else 61 #define DPRINTF(x) 62 #define DPRINTFN(n,x) 63 #endif 64 65 int urlphy_match(struct device *, void *, void *); 66 void urlphy_attach(struct device *, struct device *, void *); 67 68 struct cfattach urlphy_ca = { 69 sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach, 70 mii_phy_activate 71 }; 72 73 struct cfdriver urlphy_cd = { 74 NULL, "urlphy", DV_DULL 75 }; 76 77 int urlphy_service(struct mii_softc *, struct mii_data *, int); 78 void urlphy_status(struct mii_softc *); 79 80 int 81 urlphy_match(struct device *parent, void *match, void *aux) 82 { 83 struct mii_attach_args *ma = aux; 84 85 /* 86 * RTL8150 reports OUT == 0, MODEL == 0 87 */ 88 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 89 MII_MODEL(ma->mii_id2) != 0) 90 return (0); 91 92 /* 93 * Make sure the parent is an 'url' device. 94 */ 95 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0) 96 return(0); 97 98 return (10); 99 } 100 101 void 102 urlphy_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct mii_softc *sc = (struct mii_softc *)self; 105 struct mii_attach_args *ma = aux; 106 struct mii_data *mii = ma->mii_data; 107 108 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 109 110 sc->mii_inst = mii->mii_instance; 111 sc->mii_phy = ma->mii_phyno; 112 sc->mii_service = urlphy_service; 113 sc->mii_status = urlphy_status; 114 sc->mii_pdata = mii; 115 sc->mii_flags = mii->mii_flags; 116 sc->mii_anegticks = 10; 117 118 /* Don't do loopback on this PHY. */ 119 sc->mii_flags |= MIIF_NOLOOP; 120 /* Don't do isolate on this PHY. */ 121 sc->mii_flags |= MIIF_NOISOLATE; 122 123 if (mii->mii_instance != 0) { 124 printf("%s: ignoring this PHY, non-zero instance\n", 125 sc->mii_dev.dv_xname); 126 return; 127 } 128 mii_phy_reset(sc); 129 130 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 131 if (sc->mii_capabilities & BMSR_MEDIAMASK) 132 mii_phy_add_media(sc); 133 } 134 135 int 136 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 137 { 138 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 139 int reg; 140 141 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 142 143 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 144 return (ENXIO); 145 146 switch (cmd) { 147 case MII_POLLSTAT: 148 /* 149 * If we're not polling our PHY instance, just return. 150 */ 151 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 152 return (0); 153 break; 154 155 case MII_MEDIACHG: 156 /* 157 * If we're not currently selected, just return. 158 */ 159 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 160 return (0); 161 162 /* If the interface is not up, don't do anything. */ 163 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 164 break; 165 166 mii_phy_setmedia(sc); 167 break; 168 169 case MII_TICK: 170 /* 171 * If we're not currently selected, just return. 172 */ 173 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 174 return (0); 175 176 /* Just bail now if the interface is down. */ 177 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 178 return (0); 179 180 /* 181 * If we're not doing autonegotiation, we don't need to do 182 * any extra work here. However, we need to check the link 183 * status so we can generate an announcement if the status 184 * changes. 185 */ 186 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 187 return (0); 188 189 /* Read the status register twice; MSR_LINK is latch-low. */ 190 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 191 if (reg & URLPHY_MSR_LINK) 192 return (0); 193 194 /* 195 * Only retry autonegotiation every N seconds. 196 */ 197 KASSERT(sc->mii_anegticks != 0); 198 if (++sc->mii_ticks != sc->mii_anegticks) 199 return (0); 200 201 sc->mii_ticks = 0; 202 mii_phy_reset(sc); 203 204 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 205 return (0); 206 207 break; 208 209 case MII_DOWN: 210 mii_phy_down(sc); 211 return (0); 212 } 213 214 /* Update the media status. */ 215 mii_phy_status(sc); 216 217 /* Callback if something changed. */ 218 mii_phy_update(sc, cmd); 219 220 return (0); 221 } 222 223 void 224 urlphy_status(struct mii_softc *sc) 225 { 226 struct mii_data *mii = sc->mii_pdata; 227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 228 int msr, bmsr, bmcr; 229 230 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 231 232 mii->mii_media_status = IFM_AVALID; 233 mii->mii_media_active = IFM_ETHER; 234 235 /* 236 * The link status bit is not exist in the BMSR register, 237 * so we need to read the MSR register to get link status. 238 */ 239 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 240 if (msr & URLPHY_MSR_LINK) 241 mii->mii_media_status |= IFM_ACTIVE; 242 243 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __FUNCTION__, 244 mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); 245 246 bmcr = PHY_READ(sc, MII_BMCR); 247 if (bmcr & BMCR_AUTOEN) { 248 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 249 if ((bmsr & BMSR_ACOMP) == 0) { 250 /* Erg, still trying, I guess... */ 251 mii->mii_media_active |= IFM_NONE; 252 return; 253 } 254 255 if (msr & URLPHY_MSR_SPEED_100) 256 mii->mii_media_active |= IFM_100_TX; 257 else 258 mii->mii_media_active |= IFM_10_T; 259 if (msr & URLPHY_MSR_DUPLEX) 260 mii->mii_media_active |= IFM_FDX; 261 } else 262 mii->mii_media_active = ife->ifm_media; 263 } 264