1 /* $NetBSD: urlphy.c,v 1.24 2008/11/17 03:04:27 dyoung 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. Neither the name of the author nor the names of any co-contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * driver for Realtek RL8150L internal phy 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: urlphy.c,v 1.24 2008/11/17 03:04:27 dyoung Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_media.h> 47 48 #include <dev/mii/mii.h> 49 #include <dev/mii/miivar.h> 50 #include <dev/mii/miidevs.h> 51 #include <dev/mii/urlphyreg.h> 52 53 #ifdef URLPHY_DEBUG 54 #define DPRINTF(x) if (urlphydebug) printf x 55 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x 56 int urlphydebug = URLPHY_DEBUG; 57 #else 58 #define DPRINTF(x) 59 #define DPRINTFN(n,x) 60 #endif 61 62 static int urlphy_match(device_t, cfdata_t, void *); 63 static void urlphy_attach(device_t, device_t, void *); 64 65 CFATTACH_DECL_NEW(urlphy, sizeof(struct mii_softc), 66 urlphy_match, urlphy_attach, mii_phy_detach, mii_phy_activate); 67 68 static int urlphy_service(struct mii_softc *, struct mii_data *, int); 69 static void urlphy_status(struct mii_softc *); 70 71 static const struct mii_phy_funcs urlphy_funcs = { 72 urlphy_service, urlphy_status, mii_phy_reset, 73 }; 74 75 static int 76 urlphy_match(device_t parent, cfdata_t match, void *aux) 77 { 78 struct mii_attach_args *ma = aux; 79 80 /* 81 * RTL8150 reports OUT == 0, MODEL == 0 82 */ 83 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 && 84 MII_MODEL(ma->mii_id2) != 0) 85 return (0); 86 87 /* 88 * Make sure the parent is an 'url' device. 89 */ 90 if (!device_is_a(parent, "url")) 91 return(0); 92 93 return (10); 94 } 95 96 static void 97 urlphy_attach(device_t parent, device_t self, void *aux) 98 { 99 struct mii_softc *sc = device_private(self); 100 struct mii_attach_args *ma = aux; 101 struct mii_data *mii = ma->mii_data; 102 103 aprint_naive(": Media interface\n"); 104 aprint_normal(": Realtek RTL8150L internal media interface\n"); 105 106 DPRINTF(("%s: %s: enter\n", device_xname(self), __func__)); 107 108 sc->mii_dev = self; 109 sc->mii_inst = mii->mii_instance; 110 sc->mii_phy = ma->mii_phyno; 111 sc->mii_funcs = &urlphy_funcs; 112 sc->mii_pdata = mii; 113 sc->mii_flags = mii->mii_flags; 114 sc->mii_anegticks = MII_ANEGTICKS_GIGE; 115 116 /* Don't do loopback on this PHY. */ 117 sc->mii_flags |= MIIF_NOLOOP; 118 /* Don't do isolate on this PHY. */ 119 sc->mii_flags |= MIIF_NOISOLATE; 120 121 if (mii->mii_instance != 0) { 122 aprint_error_dev(self, "ignoring this PHY, non-zero instance\n"); 123 return; 124 } 125 PHY_RESET(sc); 126 127 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 128 aprint_normal_dev(self, ""); 129 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 130 aprint_error("no media present"); 131 else 132 mii_phy_add_media(sc); 133 aprint_normal("\n"); 134 } 135 136 static 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", device_xname(sc->mii_dev), __func__)); 143 144 switch (cmd) { 145 case MII_POLLSTAT: 146 /* 147 * If we're not polling our PHY instance, just return. 148 */ 149 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 150 return (0); 151 break; 152 153 case MII_MEDIACHG: 154 /* 155 * If we're not currently selected, just return. 156 */ 157 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 158 return (0); 159 160 /* If the interface is not up, don't do anything. */ 161 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 162 break; 163 164 mii_phy_setmedia(sc); 165 break; 166 167 case MII_TICK: 168 /* 169 * If we're not currently selected, just return. 170 */ 171 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 172 return (0); 173 174 /* Just bail now if the interface is down. */ 175 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 176 return (0); 177 178 /* 179 * If we're not doing autonegotiation, we don't need to do 180 * any extra work here. However, we need to check the link 181 * status so we can generate an announcement if the status 182 * changes. 183 */ 184 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 185 return (0); 186 187 /* Read the status register twice; MSR_LINK is latch-low. */ 188 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR); 189 if (reg & URLPHY_MSR_LINK) 190 return (0); 191 192 /* 193 * Only retry autonegotiation every N seconds. 194 */ 195 KASSERT(sc->mii_anegticks != 0); 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 static 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", device_xname(sc->mii_dev), __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", device_xname(sc->mii_dev), __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 if (msr & URLPHY_MSR_DUPLEX) 258 mii->mii_media_active |= IFM_FDX; 259 } else 260 mii->mii_media_active = ife->ifm_media; 261 } 262