1 /* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */ 2 /* 3 * Copyright (c) 2001, 2002 4 * Shingo WATANABE <nabe@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 1.1 2002/03/28 21:07:53 ichiro 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/malloc.h> 47 #include <sys/socket.h> 48 49 #include <net/if.h> 50 #include <net/if_media.h> 51 52 #include <dev/mii/mii.h> 53 #include <dev/mii/miivar.h> 54 #include <dev/mii/miidevs.h> 55 #include <dev/mii/urlphyreg.h> 56 57 #define URLPHY_DEBUG 0 58 #ifdef URLPHY_DEBUG 59 #define DPRINTF(x) if (urlphydebug) printf x 60 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x 61 int urlphydebug = URLPHY_DEBUG; 62 #else 63 #define DPRINTF(x) 64 #define DPRINTFN(n,x) 65 #endif 66 67 int urlphy_match(struct device *, struct cfdata *, void *); 68 void urlphy_attach(struct device *, struct device *, void *); 69 70 struct cfattach urlphy_ca = { 71 sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach, 72 mii_phy_activate 73 }; 74 75 int urlphy_service(struct mii_softc *, struct mii_data *, int); 76 void urlphy_status(struct mii_softc *); 77 78 const struct mii_phy_funcs urlphy_funcs = { 79 urlphy_service, urlphy_status, mii_phy_reset, 80 }; 81 82 int 83 urlphy_match(struct device *parent, struct cfdata *match, void *aux) 84 { 85 struct mii_attach_args *ma = aux; 86 87 /* 88 * RTL8150 reports OUT == 0, MODEL == 0 89 */ 90 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 91 MII_MODEL(ma->mii_id2) != 0) 92 return (0); 93 94 /* 95 * Make sure the parent is an 'url' device. 96 */ 97 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0) 98 return(0); 99 100 return (10); 101 } 102 103 void 104 urlphy_attach(struct device *parent, struct device *self, void *aux) 105 { 106 struct mii_softc *sc = (struct mii_softc *)self; 107 struct mii_attach_args *ma = aux; 108 struct mii_data *mii = ma->mii_data; 109 110 printf(": Realtek RTL8150L internal media interface\n"); 111 112 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 113 114 sc->mii_inst = mii->mii_instance; 115 sc->mii_phy = ma->mii_phyno; 116 sc->mii_funcs = &urlphy_funcs; 117 sc->mii_pdata = mii; 118 sc->mii_flags = mii->mii_flags; 119 sc->mii_anegticks = 10; 120 121 /* Don't do loopback on this PHY. */ 122 sc->mii_flags |= MIIF_NOLOOP; 123 /* Don't do isolate on this PHY. */ 124 sc->mii_flags |= MIIF_NOISOLATE; 125 126 if (mii->mii_instance != 0) { 127 printf("%s: ignoring this PHY, non-zero instance\n", 128 sc->mii_dev.dv_xname); 129 return; 130 } 131 PHY_RESET(sc); 132 133 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 134 printf("%s: ", sc->mii_dev.dv_xname); 135 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 136 printf("no media present"); 137 else 138 mii_phy_add_media(sc); 139 printf("\n"); 140 } 141 142 int 143 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 144 { 145 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 146 int reg; 147 148 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 149 150 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0) 151 return (ENXIO); 152 153 switch (cmd) { 154 case MII_POLLSTAT: 155 /* 156 * If we're not polling our PHY instance, just return. 157 */ 158 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 159 return (0); 160 break; 161 162 case MII_MEDIACHG: 163 /* 164 * If we're not currently selected, just return. 165 */ 166 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 167 return (0); 168 169 /* If the interface is not up, don't do anything. */ 170 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 171 break; 172 173 mii_phy_setmedia(sc); 174 break; 175 176 case MII_TICK: 177 /* 178 * If we're not currently selected, just return. 179 */ 180 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 181 return (0); 182 183 /* Just bail now if the interface is down. */ 184 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 185 return (0); 186 187 /* 188 * If we're not doing autonegotiation, we don't need to do 189 * any extra work here. However, we need to check the link 190 * status so we can generate an announcement if the status 191 * changes. 192 */ 193 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 194 return (0); 195 196 /* Read the status register twice; MSR_LINK is latch-low. */ 197 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 198 if (reg & URLPHY_MSR_LINK) 199 return (0); 200 201 /* 202 * Only retry autonegotiation every N seconds. 203 */ 204 KASSERT(sc->mii_anegticks != 0); 205 if (++sc->mii_ticks != sc->mii_anegticks) 206 return (0); 207 208 sc->mii_ticks = 0; 209 PHY_RESET(sc); 210 211 if (mii_phy_auto(sc, 0) == EJUSTRETURN) 212 return (0); 213 214 break; 215 216 case MII_DOWN: 217 mii_phy_down(sc); 218 return (0); 219 } 220 221 /* Update the media status. */ 222 mii_phy_status(sc); 223 224 /* Callback if something changed. */ 225 mii_phy_update(sc, cmd); 226 227 return (0); 228 } 229 230 void 231 urlphy_status(struct mii_softc *sc) 232 { 233 struct mii_data *mii = sc->mii_pdata; 234 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 235 int msr, bmsr, bmcr; 236 237 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __FUNCTION__)); 238 239 mii->mii_media_status = IFM_AVALID; 240 mii->mii_media_active = IFM_ETHER; 241 242 /* 243 * The link status bit is not exist in the BMSR register, 244 * so we need to read the MSR register to get link status. 245 */ 246 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 247 if (msr & URLPHY_MSR_LINK) 248 mii->mii_media_status |= IFM_ACTIVE; 249 250 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __FUNCTION__, 251 mii->mii_media_status & IFM_ACTIVE ? "up" : "down")); 252 253 bmcr = PHY_READ(sc, MII_BMCR); 254 if (bmcr & BMCR_AUTOEN) { 255 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); 256 if ((bmsr & BMSR_ACOMP) == 0) { 257 /* Erg, still trying, I guess... */ 258 mii->mii_media_active |= IFM_NONE; 259 return; 260 } 261 262 if (msr & URLPHY_MSR_SPEED_100) 263 mii->mii_media_active |= IFM_100_TX; 264 else 265 mii->mii_media_active |= IFM_10_T; 266 if (msr & URLPHY_MSR_DUPLEX) 267 mii->mii_media_active |= IFM_FDX; 268 } else 269 mii->mii_media_active = ife->ifm_media; 270 } 271