1356290Sjkim/*- 2238405Sjkim * Copyright (c) 1997, 1998, 1999 3238405Sjkim * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4238405Sjkim * 5238405Sjkim * Redistribution and use in source and binary forms, with or without 6238405Sjkim * modification, are permitted provided that the following conditions 7238405Sjkim * are met: 8238405Sjkim * 1. Redistributions of source code must retain the above copyright 9238405Sjkim * notice, this list of conditions and the following disclaimer. 10238405Sjkim * 2. Redistributions in binary form must reproduce the above copyright 11238405Sjkim * notice, this list of conditions and the following disclaimer in the 12238405Sjkim * documentation and/or other materials provided with the distribution. 13238405Sjkim * 3. All advertising materials mentioning features or use of this software 14238405Sjkim * must display the following acknowledgement: 15238405Sjkim * This product includes software developed by Bill Paul. 16238405Sjkim * 4. Neither the name of the author nor the names of any co-contributors 17238405Sjkim * may be used to endorse or promote products derived from this software 18238405Sjkim * without specific prior written permission. 19238405Sjkim * 20238405Sjkim * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21238405Sjkim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22238405Sjkim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23238405Sjkim * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24238405Sjkim * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25238405Sjkim * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26238405Sjkim * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27238405Sjkim * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28238405Sjkim * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29238405Sjkim * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30238405Sjkim * THE POSSIBILITY OF SUCH DAMAGE. 31238405Sjkim */ 32238405Sjkim 33238405Sjkim#include <sys/cdefs.h> 34238405Sjkim__FBSDID("$FreeBSD$"); 35238405Sjkim 36238405Sjkim/* 37238405Sjkim * driver for RealTek 8139 internal PHYs 38238405Sjkim */ 39238405Sjkim 40238405Sjkim#include <sys/param.h> 41276861Sjkim#include <sys/systm.h> 42276861Sjkim#include <sys/kernel.h> 43238405Sjkim#include <sys/module.h> 44238405Sjkim#include <sys/socket.h> 45238405Sjkim#include <sys/bus.h> 46238405Sjkim 47238405Sjkim#include <net/if.h> 48238405Sjkim#include <net/if_arp.h> 49312826Sjkim#include <net/if_media.h> 50238405Sjkim 51238405Sjkim#include <dev/mii/mii.h> 52238405Sjkim#include <dev/mii/miivar.h> 53276861Sjkim#include "miidevs.h" 54276861Sjkim 55276861Sjkim#include <machine/bus.h> 56238405Sjkim#include <pci/if_rlreg.h> 57344604Sjkim 58344604Sjkim#include "miibus_if.h" 59344604Sjkim 60344604Sjkimstatic int rlphy_probe(device_t); 61344604Sjkimstatic int rlphy_attach(device_t); 62344604Sjkim 63238405Sjkimstatic device_method_t rlphy_methods[] = { 64344604Sjkim /* device interface */ 65344604Sjkim DEVMETHOD(device_probe, rlphy_probe), 66344604Sjkim DEVMETHOD(device_attach, rlphy_attach), 67344604Sjkim DEVMETHOD(device_detach, mii_phy_detach), 68276861Sjkim DEVMETHOD(device_shutdown, bus_generic_shutdown), 69238405Sjkim DEVMETHOD_END 70344604Sjkim}; 71238405Sjkim 72238405Sjkimstatic devclass_t rlphy_devclass; 73238405Sjkim 74238405Sjkimstatic driver_t rlphy_driver = { 75238405Sjkim "rlphy", 76238405Sjkim rlphy_methods, 77238405Sjkim sizeof(struct mii_softc) 78238405Sjkim}; 79238405Sjkim 80238405SjkimDRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); 81238405Sjkim 82238405Sjkimstatic int rlphy_service(struct mii_softc *, struct mii_data *, int); 83238405Sjkimstatic void rlphy_status(struct mii_softc *); 84238405Sjkim 85238405Sjkim/* 86238405Sjkim * RealTek internal PHYs don't have vendor/device ID registers; 87238405Sjkim * re(4) and rl(4) fake up a return value of all zeros. 88238405Sjkim */ 89238405Sjkimstatic const struct mii_phydesc rlintphys[] = { 90238405Sjkim { 0, 0, "RealTek internal media interface" }, 91238405Sjkim MII_PHY_END 92238405Sjkim}; 93238405Sjkim 94238405Sjkimstatic const struct mii_phydesc rlphys[] = { 95238405Sjkim MII_PHY_DESC(yyREALTEK, RTL8201L), 96238405Sjkim MII_PHY_DESC(REALTEK, RTL8201E), 97238405Sjkim MII_PHY_DESC(xxICPLUS, IP101), 98238405Sjkim MII_PHY_END 99238405Sjkim}; 100238405Sjkim 101238405Sjkimstatic const struct mii_phy_funcs rlphy_funcs = { 102238405Sjkim rlphy_service, 103238405Sjkim rlphy_status, 104238405Sjkim mii_phy_reset 105238405Sjkim}; 106238405Sjkim 107238405Sjkimstatic int 108238405Sjkimrlphy_probe(device_t dev) 109238405Sjkim{ 110238405Sjkim const char *nic; 111238405Sjkim int rv; 112238405Sjkim 113238405Sjkim rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT); 114238405Sjkim if (rv <= 0) 115238405Sjkim return (rv); 116238405Sjkim 117238405Sjkim nic = device_get_name(device_get_parent(device_get_parent(dev))); 118238405Sjkim if (strcmp(nic, "rl") == 0 || strcmp(nic, "re") == 0) 119238405Sjkim return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT)); 120238405Sjkim return (ENXIO); 121238405Sjkim} 122238405Sjkim 123238405Sjkimstatic int 124238405Sjkimrlphy_attach(device_t dev) 125238405Sjkim{ 126238405Sjkim 127238405Sjkim /* 128238405Sjkim * The RealTek PHY can never be isolated. 129238405Sjkim */ 130238405Sjkim mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 131238405Sjkim &rlphy_funcs, 1); 132238405Sjkim return (0); 133238405Sjkim} 134238405Sjkim 135238405Sjkimstatic int 136356290Sjkimrlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 137238405Sjkim{ 138238405Sjkim 139238405Sjkim switch (cmd) { 140238405Sjkim case MII_POLLSTAT: 141238405Sjkim break; 142238405Sjkim 143238405Sjkim case MII_MEDIACHG: 144238405Sjkim /* 145238405Sjkim * If the interface is not up, don't do anything. 146238405Sjkim */ 147238405Sjkim if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 148238405Sjkim break; 149238405Sjkim 150238405Sjkim mii_phy_setmedia(sc); 151238405Sjkim break; 152238405Sjkim 153238405Sjkim case MII_TICK: 154344604Sjkim /* 155238405Sjkim * Is the interface even up? 156238405Sjkim */ 157238405Sjkim if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 158238405Sjkim return (0); 159238405Sjkim 160238405Sjkim /* 161238405Sjkim * The RealTek PHY's autonegotiation doesn't need to be 162238405Sjkim * kicked; it continues in the background. 163344604Sjkim */ 164238405Sjkim break; 165238405Sjkim } 166238405Sjkim 167238405Sjkim /* Update the media status. */ 168238405Sjkim PHY_STATUS(sc); 169344604Sjkim 170344604Sjkim /* Callback if something changed. */ 171238405Sjkim mii_phy_update(sc, cmd); 172238405Sjkim return (0); 173344604Sjkim} 174344604Sjkim 175344604Sjkimstatic void 176238405Sjkimrlphy_status(struct mii_softc *phy) 177238405Sjkim{ 178344604Sjkim struct mii_data *mii = phy->mii_pdata; 179 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 180 int bmsr, bmcr, anlpar; 181 182 mii->mii_media_status = IFM_AVALID; 183 mii->mii_media_active = IFM_ETHER; 184 185 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 186 if (bmsr & BMSR_LINK) 187 mii->mii_media_status |= IFM_ACTIVE; 188 189 bmcr = PHY_READ(phy, MII_BMCR); 190 if (bmcr & BMCR_ISO) { 191 mii->mii_media_active |= IFM_NONE; 192 mii->mii_media_status = 0; 193 return; 194 } 195 196 if (bmcr & BMCR_LOOP) 197 mii->mii_media_active |= IFM_LOOP; 198 199 if (bmcr & BMCR_AUTOEN) { 200 /* 201 * NWay autonegotiation takes the highest-order common 202 * bit of the ANAR and ANLPAR (i.e. best media advertised 203 * both by us and our link partner). 204 */ 205 if ((bmsr & BMSR_ACOMP) == 0) { 206 /* Erg, still trying, I guess... */ 207 mii->mii_media_active |= IFM_NONE; 208 return; 209 } 210 211 if ((anlpar = PHY_READ(phy, MII_ANAR) & 212 PHY_READ(phy, MII_ANLPAR))) { 213 if (anlpar & ANLPAR_TX_FD) 214 mii->mii_media_active |= IFM_100_TX|IFM_FDX; 215 else if (anlpar & ANLPAR_T4) 216 mii->mii_media_active |= IFM_100_T4|IFM_HDX; 217 else if (anlpar & ANLPAR_TX) 218 mii->mii_media_active |= IFM_100_TX|IFM_HDX; 219 else if (anlpar & ANLPAR_10_FD) 220 mii->mii_media_active |= IFM_10_T|IFM_FDX; 221 else if (anlpar & ANLPAR_10) 222 mii->mii_media_active |= IFM_10_T|IFM_HDX; 223 else 224 mii->mii_media_active |= IFM_NONE; 225 if ((mii->mii_media_active & IFM_FDX) != 0) 226 mii->mii_media_active |= 227 mii_phy_flowstatus(phy); 228 return; 229 } 230 /* 231 * If the other side doesn't support NWAY, then the 232 * best we can do is determine if we have a 10Mbps or 233 * 100Mbps link. There's no way to know if the link 234 * is full or half duplex, so we default to half duplex 235 * and hope that the user is clever enough to manually 236 * change the media settings if we're wrong. 237 */ 238 239 /* 240 * The RealTek PHY supports non-NWAY link speed 241 * detection, however it does not report the link 242 * detection results via the ANLPAR or BMSR registers. 243 * (What? RealTek doesn't do things the way everyone 244 * else does? I'm just shocked, shocked I tell you.) 245 * To determine the link speed, we have to do one 246 * of two things: 247 * 248 * - If this is a standalone RealTek RTL8201(L) or 249 * workalike PHY, we can determine the link speed by 250 * testing bit 0 in the magic, vendor-specific register 251 * at offset 0x19. 252 * 253 * - If this is a RealTek MAC with integrated PHY, we 254 * can test the 'SPEED10' bit of the MAC's media status 255 * register. 256 */ 257 if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) { 258 if (PHY_READ(phy, 0x0019) & 0x01) 259 mii->mii_media_active |= IFM_100_TX; 260 else 261 mii->mii_media_active |= IFM_10_T; 262 } else { 263 if (PHY_READ(phy, RL_MEDIASTAT) & 264 RL_MEDIASTAT_SPEED10) 265 mii->mii_media_active |= IFM_10_T; 266 else 267 mii->mii_media_active |= IFM_100_TX; 268 } 269 mii->mii_media_active |= IFM_HDX; 270 } else 271 mii->mii_media_active = ife->ifm_media; 272} 273