1 /* $OpenBSD: urlphy.c,v 1.9 2005/02/05 04:56:27 brad 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. Neither the name of the author nor the names of any co-contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 /* 34 * driver for Realtek RL8150L internal phy 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/socket.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/mii.h> 47 #include <dev/mii/miivar.h> 48 #include <dev/mii/miidevs.h> 49 #include <dev/mii/urlphyreg.h> 50 51 #define URLPHY_DEBUG 0 52 #ifdef URLPHY_DEBUG 53 #define DPRINTF(x) if (urlphydebug) printf x 54 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x 55 int urlphydebug = URLPHY_DEBUG; 56 #else 57 #define DPRINTF(x) 58 #define DPRINTFN(n,x) 59 #endif 60 61 int urlphy_match(struct device *, void *, void *); 62 void urlphy_attach(struct device *, struct device *, void *); 63 64 struct cfattach urlphy_ca = { 65 sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach, 66 mii_phy_activate 67 }; 68 69 struct cfdriver urlphy_cd = { 70 NULL, "urlphy", DV_DULL 71 }; 72 73 int urlphy_service(struct mii_softc *, struct mii_data *, int); 74 void urlphy_status(struct mii_softc *); 75 76 const struct mii_phy_funcs urlphy_funcs = { 77 urlphy_service, urlphy_status, mii_phy_reset, 78 }; 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 printf(": RTL internal phy\n"); 109 110 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 111 112 sc->mii_inst = mii->mii_instance; 113 sc->mii_phy = ma->mii_phyno; 114 sc->mii_funcs = &urlphy_funcs; 115 sc->mii_pdata = mii; 116 sc->mii_flags = ma->mii_flags; 117 sc->mii_anegticks = 10; 118 119 /* Don't do loopback on this PHY. */ 120 sc->mii_flags |= MIIF_NOLOOP; 121 /* Don't do isolate on this PHY. */ 122 sc->mii_flags |= MIIF_NOISOLATE; 123 124 if (mii->mii_instance != 0) { 125 printf("%s: ignoring this PHY, non-zero instance\n", 126 sc->mii_dev.dv_xname); 127 return; 128 } 129 PHY_RESET(sc); 130 131 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 132 if (sc->mii_capabilities & BMSR_MEDIAMASK) 133 mii_phy_add_media(sc); 134 } 135 136 int 137 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 138 { 139 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 140 int reg; 141 142 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 143 144 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 145 return (ENXIO); 146 147 switch (cmd) { 148 case MII_POLLSTAT: 149 /* 150 * If we're not polling our PHY instance, just return. 151 */ 152 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 153 return (0); 154 break; 155 156 case MII_MEDIACHG: 157 /* 158 * If we're not currently selected, just return. 159 */ 160 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 161 return (0); 162 163 /* If the interface is not up, don't do anything. */ 164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 165 break; 166 167 mii_phy_setmedia(sc); 168 break; 169 170 case MII_TICK: 171 /* 172 * If we're not currently selected, just return. 173 */ 174 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 175 return (0); 176 177 /* Just bail now if the interface is down. */ 178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 179 return (0); 180 181 /* 182 * If we're not doing autonegotiation, we don't need to do 183 * any extra work here. However, we need to check the link 184 * status so we can generate an announcement if the status 185 * changes. 186 */ 187 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 188 return (0); 189 190 /* Read the status register twice; MSR_LINK is latch-low. */ 191 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 192 if (reg & URLPHY_MSR_LINK) 193 return (0); 194 195 /* 196 * Only retry autonegotiation every N seconds. 197 */ 198 KASSERT(sc->mii_anegticks != 0); 199 if (++sc->mii_ticks != sc->mii_anegticks) 200 return (0); 201 202 sc->mii_ticks = 0; 203 PHY_RESET(sc); 204 205 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 206 return (0); 207 208 break; 209 210 case MII_DOWN: 211 mii_phy_down(sc); 212 return (0); 213 } 214 215 /* Update the media status. */ 216 mii_phy_status(sc); 217 218 /* Callback if something changed. */ 219 mii_phy_update(sc, cmd); 220 221 return (0); 222 } 223 224 void 225 urlphy_status(struct mii_softc *sc) 226 { 227 struct mii_data *mii = sc->mii_pdata; 228 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 229 int msr, bmsr, bmcr; 230 231 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 232 233 mii->mii_media_status = IFM_AVALID; 234 mii->mii_media_active = IFM_ETHER; 235 236 /* 237 * The link status bit is not exist in the BMSR register, 238 * so we need to read the MSR register to get link status. 239 */ 240 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 241 if (msr & URLPHY_MSR_LINK) 242 mii->mii_media_status |= IFM_ACTIVE; 243 244 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__, 245 mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); 246 247 bmcr = PHY_READ(sc, MII_BMCR); 248 if (bmcr & BMCR_AUTOEN) { 249 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 250 if ((bmsr & BMSR_ACOMP) == 0) { 251 /* Erg, still trying, I guess... */ 252 mii->mii_media_active |= IFM_NONE; 253 return; 254 } 255 256 if (msr & URLPHY_MSR_SPEED_100) 257 mii->mii_media_active |= IFM_100_TX; 258 else 259 mii->mii_media_active |= IFM_10_T; 260 if (msr & URLPHY_MSR_DUPLEX) 261 mii->mii_media_active |= IFM_FDX; 262 } else 263 mii->mii_media_active = ife->ifm_media; 264 } 265