1/*- 2 * Copyright (c) 1997, 1998, 1999 3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: src/sys/dev/mii/rlphy.c,v 1.32.2.5.2.1 2010/12/21 17:09:25 kensmith Exp $"); 35 36/* 37 * driver for RealTek 8139 internal PHYs 38 */ 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/module.h> 44#include <sys/socket.h> 45#include <sys/bus.h> 46 47#include <net/if.h> 48#include <net/if_arp.h> 49#include <net/if_media.h> 50 51#include <dev/mii/mii.h> 52#include <dev/mii/miivar.h> 53#include "miidevs.h" 54 55#include <machine/bus.h> 56#include <pci/if_rlreg.h> 57 58#include "miibus_if.h" 59 60static int rlphy_probe(device_t); 61static int rlphy_attach(device_t); 62 63static device_method_t rlphy_methods[] = { 64 /* device interface */ 65 DEVMETHOD(device_probe, rlphy_probe), 66 DEVMETHOD(device_attach, rlphy_attach), 67 DEVMETHOD(device_detach, mii_phy_detach), 68 DEVMETHOD(device_shutdown, bus_generic_shutdown), 69 { 0, 0 } 70}; 71 72static devclass_t rlphy_devclass; 73 74static driver_t rlphy_driver = { 75 "rlphy", 76 rlphy_methods, 77 sizeof(struct mii_softc) 78}; 79 80DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); 81 82static int rlphy_service(struct mii_softc *, struct mii_data *, int); 83static void rlphy_status(struct mii_softc *); 84 85/* 86 * RealTek internal PHYs don't have vendor/device ID registers; 87 * re(4) and rl(4) fake up a return value of all zeros. 88 */ 89static const struct mii_phydesc rlintphys[] = { 90 { 0, 0, "RealTek internal media interface" }, 91 MII_PHY_END 92}; 93 94static const struct mii_phydesc rlphys[] = { 95 MII_PHY_DESC(yyREALTEK, RTL8201L), 96 MII_PHY_DESC(REALTEK, RTL8201E), 97 MII_PHY_DESC(xxICPLUS, IP101), 98 MII_PHY_END 99}; 100 101static const struct mii_phy_funcs rlphy_funcs = { 102 rlphy_service, 103 rlphy_status, 104 mii_phy_reset 105}; 106 107static int 108rlphy_probe(device_t dev) 109{ 110 const char *nic; 111 int rv; 112 113 rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT); 114#ifdef __HAIKU__ 115 if (rv == BUS_PROBE_DEFAULT) 116 return (rv); 117#else 118 if (rv <= 0) 119 return (rv); 120#endif 121 122 nic = device_get_name(device_get_parent(device_get_parent(dev))); 123 if (strcmp(nic, "rl") == 0 || strcmp(nic, "re") == 0) 124 return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT)); 125 return (ENXIO); 126} 127 128static int 129rlphy_attach(device_t dev) 130{ 131 132 /* 133 * The RealTek PHY can never be isolated. 134 */ 135 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 136 &rlphy_funcs, 1); 137 return (0); 138} 139 140static int 141rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 142{ 143 144 switch (cmd) { 145 case MII_POLLSTAT: 146 break; 147 148 case MII_MEDIACHG: 149 /* 150 * If the interface is not up, don't do anything. 151 */ 152 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 153 break; 154 155 mii_phy_setmedia(sc); 156 break; 157 158 case MII_TICK: 159 /* 160 * Is the interface even up? 161 */ 162 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 163 return (0); 164 165 /* 166 * The RealTek PHY's autonegotiation doesn't need to be 167 * kicked; it continues in the background. 168 */ 169 break; 170 } 171 172 /* Update the media status. */ 173 PHY_STATUS(sc); 174 175 /* Callback if something changed. */ 176 mii_phy_update(sc, cmd); 177 return (0); 178} 179 180static void 181rlphy_status(struct mii_softc *phy) 182{ 183 struct mii_data *mii = phy->mii_pdata; 184 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 185 int bmsr, bmcr, anlpar; 186 187 mii->mii_media_status = IFM_AVALID; 188 mii->mii_media_active = IFM_ETHER; 189 190 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 191 if (bmsr & BMSR_LINK) 192 mii->mii_media_status |= IFM_ACTIVE; 193 194 bmcr = PHY_READ(phy, MII_BMCR); 195 if (bmcr & BMCR_ISO) { 196 mii->mii_media_active |= IFM_NONE; 197 mii->mii_media_status = 0; 198 return; 199 } 200 201 if (bmcr & BMCR_LOOP) 202 mii->mii_media_active |= IFM_LOOP; 203 204 if (bmcr & BMCR_AUTOEN) { 205 /* 206 * NWay autonegotiation takes the highest-order common 207 * bit of the ANAR and ANLPAR (i.e. best media advertised 208 * both by us and our link partner). 209 */ 210 if ((bmsr & BMSR_ACOMP) == 0) { 211 /* Erg, still trying, I guess... */ 212 mii->mii_media_active |= IFM_NONE; 213 return; 214 } 215 216 if ((anlpar = PHY_READ(phy, MII_ANAR) & 217 PHY_READ(phy, MII_ANLPAR))) { 218 if (anlpar & ANLPAR_TX_FD) 219 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 220 else if (anlpar & ANLPAR_T4) 221 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 222 else if (anlpar & ANLPAR_TX) 223 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 224 else if (anlpar & ANLPAR_10_FD) 225 mii->mii_media_active |= IFM_10_T|IFM_FDX; 226 else if (anlpar & ANLPAR_10) 227 mii->mii_media_active |= IFM_10_T|IFM_HDX; 228 else 229 mii->mii_media_active |= IFM_NONE; 230 if ((mii->mii_media_active & IFM_FDX) != 0) 231 mii->mii_media_active |= 232 mii_phy_flowstatus(phy); 233 return; 234 } 235 /* 236 * If the other side doesn't support NWAY, then the 237 * best we can do is determine if we have a 10Mbps or 238 * 100Mbps link. There's no way to know if the link 239 * is full or half duplex, so we default to half duplex 240 * and hope that the user is clever enough to manually 241 * change the media settings if we're wrong. 242 */ 243 244 /* 245 * The RealTek PHY supports non-NWAY link speed 246 * detection, however it does not report the link 247 * detection results via the ANLPAR or BMSR registers. 248 * (What? RealTek doesn't do things the way everyone 249 * else does? I'm just shocked, shocked I tell you.) 250 * To determine the link speed, we have to do one 251 * of two things: 252 * 253 * - If this is a standalone RealTek RTL8201(L) or 254 * workalike PHY, we can determine the link speed by 255 * testing bit 0 in the magic, vendor-specific register 256 * at offset 0x19. 257 * 258 * - If this is a RealTek MAC with integrated PHY, we 259 * can test the 'SPEED10' bit of the MAC's media status 260 * register. 261 */ 262 if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) { 263 if (PHY_READ(phy, 0x0019) & 0x01) 264 mii->mii_media_active |= IFM_100_TX; 265 else 266 mii->mii_media_active |= IFM_10_T; 267 } else { 268 if (PHY_READ(phy, RL_MEDIASTAT) & 269 RL_MEDIASTAT_SPEED10) 270 mii->mii_media_active |= IFM_10_T; 271 else 272 mii->mii_media_active |= IFM_100_TX; 273 } 274 mii->mii_media_active |= IFM_HDX; 275 } else 276 mii->mii_media_active = ife->ifm_media; 277} 278