1 /* $OpenBSD: urlphy.c,v 1.17 2015/03/14 03:38:48 jsg 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_var.h> 45 #include <net/if_media.h> 46 47 #include <dev/mii/mii.h> 48 #include <dev/mii/miivar.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 }; 67 68 struct cfdriver urlphy_cd = { 69 NULL, "urlphy", DV_DULL 70 }; 71 72 int urlphy_service(struct mii_softc *, struct mii_data *, int); 73 void urlphy_status(struct mii_softc *); 74 75 const struct mii_phy_funcs urlphy_funcs = { 76 urlphy_service, urlphy_status, mii_phy_reset, 77 }; 78 79 int 80 urlphy_match(struct device *parent, void *match, void *aux) 81 { 82 struct mii_attach_args *ma = aux; 83 84 /* 85 * RTL8150 reports OUT == 0, MODEL == 0 86 */ 87 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 88 MII_MODEL(ma->mii_id2) != 0) 89 return (0); 90 91 /* 92 * Make sure the parent is an 'url' device. 93 */ 94 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0) 95 return (0); 96 97 return (10); 98 } 99 100 void 101 urlphy_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct mii_softc *sc = (struct mii_softc *)self; 104 struct mii_attach_args *ma = aux; 105 struct mii_data *mii = ma->mii_data; 106 107 printf(": RTL internal phy\n"); 108 109 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 110 111 sc->mii_inst = mii->mii_instance; 112 sc->mii_phy = ma->mii_phyno; 113 sc->mii_funcs = &urlphy_funcs; 114 sc->mii_pdata = mii; 115 sc->mii_flags = ma->mii_flags; 116 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 117 118 sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; 119 120 if (mii->mii_instance != 0) { 121 printf("%s: ignoring this PHY, non-zero instance\n", 122 sc->mii_dev.dv_xname); 123 return; 124 } 125 PHY_RESET(sc); 126 127 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 128 if (sc->mii_capabilities & BMSR_MEDIAMASK) 129 mii_phy_add_media(sc); 130 } 131 132 int 133 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 134 { 135 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 136 int reg; 137 138 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 139 140 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 141 return (ENXIO); 142 143 switch (cmd) { 144 case MII_POLLSTAT: 145 /* 146 * If we're not polling our PHY instance, just return. 147 */ 148 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 149 return (0); 150 break; 151 152 case MII_MEDIACHG: 153 /* 154 * If we're not currently selected, just return. 155 */ 156 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 157 return (0); 158 159 /* If the interface is not up, don't do anything. */ 160 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 161 break; 162 163 mii_phy_setmedia(sc); 164 break; 165 166 case MII_TICK: 167 /* 168 * If we're not currently selected, just return. 169 */ 170 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 171 return (0); 172 173 /* Just bail now if the interface is down. */ 174 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 175 return (0); 176 177 /* 178 * If we're not doing autonegotiation, we don't need to do 179 * any extra work here. However, we need to check the link 180 * status so we can generate an announcement if the status 181 * changes. 182 */ 183 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 184 return (0); 185 186 /* Read the status register twice; MSR_LINK is latch-low. */ 187 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 188 if (reg & URLPHY_MSR_LINK) { 189 sc->mii_ticks = 0; 190 break; 191 } 192 193 /* 194 * Only retry autonegotiation every mii_anegticks seconds. 195 */ 196 if (++sc->mii_ticks <= sc->mii_anegticks) 197 return (0); 198 199 sc->mii_ticks = 0; 200 PHY_RESET(sc); 201 202 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 203 return (0); 204 205 break; 206 207 case MII_DOWN: 208 mii_phy_down(sc); 209 return (0); 210 } 211 212 /* Update the media status. */ 213 mii_phy_status(sc); 214 215 /* Callback if something changed. */ 216 mii_phy_update(sc, cmd); 217 218 return (0); 219 } 220 221 void 222 urlphy_status(struct mii_softc *sc) 223 { 224 struct mii_data *mii = sc->mii_pdata; 225 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 226 int msr, bmsr, bmcr; 227 228 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__)); 229 230 mii->mii_media_status = IFM_AVALID; 231 mii->mii_media_active = IFM_ETHER; 232 233 /* 234 * The link status bit is not exist in the BMSR register, 235 * so we need to read the MSR register to get link status. 236 */ 237 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 238 if (msr & URLPHY_MSR_LINK) 239 mii->mii_media_status |= IFM_ACTIVE; 240 241 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__, 242 mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); 243 244 bmcr = PHY_READ(sc, MII_BMCR); 245 if (bmcr & BMCR_AUTOEN) { 246 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 247 if ((bmsr & BMSR_ACOMP) == 0) { 248 /* Erg, still trying, I guess... */ 249 mii->mii_media_active |= IFM_NONE; 250 return; 251 } 252 253 if (msr & URLPHY_MSR_SPEED_100) 254 mii->mii_media_active |= IFM_100_TX; 255 else 256 mii->mii_media_active |= IFM_10_T; 257 258 if (msr & URLPHY_MSR_DUPLEX) 259 mii->mii_media_active |= IFM_FDX; 260 else 261 mii->mii_media_active |= IFM_HDX; 262 } else 263 mii->mii_media_active = ife->ifm_media; 264 } 265