1139749Simp/*- 250702Swpaul * Copyright (c) 1997, 1998, 1999 350702Swpaul * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 450702Swpaul * 550702Swpaul * Redistribution and use in source and binary forms, with or without 650702Swpaul * modification, are permitted provided that the following conditions 750702Swpaul * are met: 850702Swpaul * 1. Redistributions of source code must retain the above copyright 950702Swpaul * notice, this list of conditions and the following disclaimer. 1050702Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1150702Swpaul * notice, this list of conditions and the following disclaimer in the 1250702Swpaul * documentation and/or other materials provided with the distribution. 1350702Swpaul * 3. All advertising materials mentioning features or use of this software 1450702Swpaul * must display the following acknowledgement: 1550702Swpaul * This product includes software developed by Bill Paul. 1650702Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1750702Swpaul * may be used to endorse or promote products derived from this software 1850702Swpaul * without specific prior written permission. 1950702Swpaul * 2050702Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2150702Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2250702Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2350702Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 2450702Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2550702Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2650702Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2750702Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2850702Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2950702Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 3050702Swpaul * THE POSSIBILITY OF SUCH DAMAGE. 3150702Swpaul */ 3250702Swpaul 33119418Sobrien#include <sys/cdefs.h> 34119418Sobrien__FBSDID("$FreeBSD: releng/11.0/sys/dev/mii/rlphy.c 277093 2015-01-12 22:27:38Z glebius $"); 35119418Sobrien 3650702Swpaul/* 3750702Swpaul * driver for RealTek 8139 internal PHYs 3850702Swpaul */ 3950702Swpaul 4050702Swpaul#include <sys/param.h> 4150702Swpaul#include <sys/systm.h> 4250702Swpaul#include <sys/kernel.h> 43129876Sphk#include <sys/module.h> 4450702Swpaul#include <sys/socket.h> 4550702Swpaul#include <sys/bus.h> 46257184Sglebius#include <sys/taskqueue.h> /* XXXGL: if_rlreg.h contamination */ 4750702Swpaul 4850702Swpaul#include <net/if.h> 4994149Swpaul#include <net/if_arp.h> 5050702Swpaul#include <net/if_media.h> 5150702Swpaul 5250702Swpaul#include <dev/mii/mii.h> 5350702Swpaul#include <dev/mii/miivar.h> 54109514Sobrien#include "miidevs.h" 5550702Swpaul 5694149Swpaul#include <machine/bus.h> 57271864Sglebius#include <dev/rl/if_rlreg.h> 5894149Swpaul 5950702Swpaul#include "miibus_if.h" 6050702Swpaul 61105135Salfredstatic int rlphy_probe(device_t); 62105135Salfredstatic int rlphy_attach(device_t); 6350702Swpaul 6450702Swpaulstatic device_method_t rlphy_methods[] = { 6550702Swpaul /* device interface */ 6650702Swpaul DEVMETHOD(device_probe, rlphy_probe), 6750702Swpaul DEVMETHOD(device_attach, rlphy_attach), 6895722Sphk DEVMETHOD(device_detach, mii_phy_detach), 6950702Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 70227908Smarius DEVMETHOD_END 7150702Swpaul}; 7250702Swpaul 7350702Swpaulstatic devclass_t rlphy_devclass; 7450702Swpaul 7550702Swpaulstatic driver_t rlphy_driver = { 7650702Swpaul "rlphy", 7750702Swpaul rlphy_methods, 78221407Smarius sizeof(struct mii_softc) 7950702Swpaul}; 8050702Swpaul 8150702SwpaulDRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); 8250702Swpaul 8392739Salfredstatic int rlphy_service(struct mii_softc *, struct mii_data *, int); 8494149Swpaulstatic void rlphy_status(struct mii_softc *); 8550702Swpaul 86165991Smarius/* 87165991Smarius * RealTek internal PHYs don't have vendor/device ID registers; 88165991Smarius * re(4) and rl(4) fake up a return value of all zeros. 89165991Smarius */ 90165991Smariusstatic const struct mii_phydesc rlintphys[] = { 91165991Smarius { 0, 0, "RealTek internal media interface" }, 92165991Smarius MII_PHY_END 93165991Smarius}; 94165991Smarius 95164827Smariusstatic const struct mii_phydesc rlphys[] = { 96221407Smarius MII_PHY_DESC(yyREALTEK, RTL8201L), 97221407Smarius MII_PHY_DESC(REALTEK, RTL8201E), 98221407Smarius MII_PHY_DESC(xxICPLUS, IP101), 99164827Smarius MII_PHY_END 100164827Smarius}; 101164827Smarius 102221407Smariusstatic const struct mii_phy_funcs rlphy_funcs = { 103221407Smarius rlphy_service, 104221407Smarius rlphy_status, 105221407Smarius mii_phy_reset 106221407Smarius}; 107221407Smarius 108105135Salfredstatic int 109150763Simprlphy_probe(device_t dev) 11050702Swpaul{ 111164827Smarius int rv; 11250702Swpaul 113164827Smarius rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT); 114164827Smarius if (rv <= 0) 115164827Smarius return (rv); 11650702Swpaul 117277093Sglebius if (mii_dev_mac_match(dev, "rl") || mii_dev_mac_match(dev, "re")) 118165991Smarius return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT)); 119165991Smarius return (ENXIO); 12050702Swpaul} 12150702Swpaul 122105135Salfredstatic int 123150763Simprlphy_attach(device_t dev) 12450702Swpaul{ 12550702Swpaul 126213364Smarius /* 127213364Smarius * The RealTek PHY can never be isolated. 128213364Smarius */ 129221407Smarius mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 130221407Smarius &rlphy_funcs, 1); 131164711Smarius return (0); 13250702Swpaul} 13350702Swpaul 13484145Sjlemonstatic int 135150763Simprlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 13650702Swpaul{ 13750702Swpaul 13850702Swpaul switch (cmd) { 13950702Swpaul case MII_POLLSTAT: 14050702Swpaul break; 14150702Swpaul 14250702Swpaul case MII_MEDIACHG: 143164711Smarius mii_phy_setmedia(sc); 14450702Swpaul break; 14550702Swpaul 14650702Swpaul case MII_TICK: 14750702Swpaul /* 14850702Swpaul * The RealTek PHY's autonegotiation doesn't need to be 14950702Swpaul * kicked; it continues in the background. 15050702Swpaul */ 15150702Swpaul break; 15250702Swpaul } 15350702Swpaul 15450702Swpaul /* Update the media status. */ 155221407Smarius PHY_STATUS(sc); 15650702Swpaul 15750702Swpaul /* Callback if something changed. */ 15884145Sjlemon mii_phy_update(sc, cmd); 15950702Swpaul return (0); 16050702Swpaul} 16194149Swpaul 162104094Sphkstatic void 163150763Simprlphy_status(struct mii_softc *phy) 16494149Swpaul{ 16594149Swpaul struct mii_data *mii = phy->mii_pdata; 166164711Smarius struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 16794149Swpaul int bmsr, bmcr, anlpar; 16894149Swpaul 16994149Swpaul mii->mii_media_status = IFM_AVALID; 17094149Swpaul mii->mii_media_active = IFM_ETHER; 17194149Swpaul 17294149Swpaul bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR); 17394149Swpaul if (bmsr & BMSR_LINK) 17494149Swpaul mii->mii_media_status |= IFM_ACTIVE; 17594149Swpaul 17694149Swpaul bmcr = PHY_READ(phy, MII_BMCR); 17794149Swpaul if (bmcr & BMCR_ISO) { 17894149Swpaul mii->mii_media_active |= IFM_NONE; 17994149Swpaul mii->mii_media_status = 0; 18094149Swpaul return; 18194149Swpaul } 18294149Swpaul 18394149Swpaul if (bmcr & BMCR_LOOP) 18494149Swpaul mii->mii_media_active |= IFM_LOOP; 18594149Swpaul 18694149Swpaul if (bmcr & BMCR_AUTOEN) { 18794149Swpaul /* 18894149Swpaul * NWay autonegotiation takes the highest-order common 18994149Swpaul * bit of the ANAR and ANLPAR (i.e. best media advertised 19094149Swpaul * both by us and our link partner). 19194149Swpaul */ 19294149Swpaul if ((bmsr & BMSR_ACOMP) == 0) { 19394149Swpaul /* Erg, still trying, I guess... */ 19494149Swpaul mii->mii_media_active |= IFM_NONE; 19594149Swpaul return; 19694149Swpaul } 19794149Swpaul 19894149Swpaul if ((anlpar = PHY_READ(phy, MII_ANAR) & 19994149Swpaul PHY_READ(phy, MII_ANLPAR))) { 200173665Syongari if (anlpar & ANLPAR_TX_FD) 201173665Syongari mii->mii_media_active |= IFM_100_TX|IFM_FDX; 202173665Syongari else if (anlpar & ANLPAR_T4) 203213384Smarius mii->mii_media_active |= IFM_100_T4|IFM_HDX; 20494149Swpaul else if (anlpar & ANLPAR_TX) 205213384Smarius mii->mii_media_active |= IFM_100_TX|IFM_HDX; 20694149Swpaul else if (anlpar & ANLPAR_10_FD) 20794149Swpaul mii->mii_media_active |= IFM_10_T|IFM_FDX; 20894149Swpaul else if (anlpar & ANLPAR_10) 209213384Smarius mii->mii_media_active |= IFM_10_T|IFM_HDX; 21094149Swpaul else 211164711Smarius mii->mii_media_active |= IFM_NONE; 212221407Smarius if ((mii->mii_media_active & IFM_FDX) != 0) 213221407Smarius mii->mii_media_active |= 214221407Smarius mii_phy_flowstatus(phy); 21594149Swpaul return; 21694149Swpaul } 21794149Swpaul /* 21894149Swpaul * If the other side doesn't support NWAY, then the 21994149Swpaul * best we can do is determine if we have a 10Mbps or 220164711Smarius * 100Mbps link. There's no way to know if the link 22194149Swpaul * is full or half duplex, so we default to half duplex 22294149Swpaul * and hope that the user is clever enough to manually 22394149Swpaul * change the media settings if we're wrong. 22494149Swpaul */ 22594149Swpaul 22694149Swpaul /* 22794149Swpaul * The RealTek PHY supports non-NWAY link speed 22894149Swpaul * detection, however it does not report the link 22994149Swpaul * detection results via the ANLPAR or BMSR registers. 23094149Swpaul * (What? RealTek doesn't do things the way everyone 23194149Swpaul * else does? I'm just shocked, shocked I tell you.) 23294149Swpaul * To determine the link speed, we have to do one 23394149Swpaul * of two things: 23494149Swpaul * 235221407Smarius * - If this is a standalone RealTek RTL8201(L) or 236221407Smarius * workalike PHY, we can determine the link speed by 237221407Smarius * testing bit 0 in the magic, vendor-specific register 238221407Smarius * at offset 0x19. 23994149Swpaul * 24094149Swpaul * - If this is a RealTek MAC with integrated PHY, we 24194149Swpaul * can test the 'SPEED10' bit of the MAC's media status 24294149Swpaul * register. 24394149Swpaul */ 244221407Smarius if (!(phy->mii_mpd_model == 0 && phy->mii_mpd_rev == 0)) { 24594149Swpaul if (PHY_READ(phy, 0x0019) & 0x01) 24694149Swpaul mii->mii_media_active |= IFM_100_TX; 24794149Swpaul else 24894149Swpaul mii->mii_media_active |= IFM_10_T; 24994149Swpaul } else { 25094149Swpaul if (PHY_READ(phy, RL_MEDIASTAT) & 25194149Swpaul RL_MEDIASTAT_SPEED10) 25294149Swpaul mii->mii_media_active |= IFM_10_T; 25394149Swpaul else 25494149Swpaul mii->mii_media_active |= IFM_100_TX; 25594149Swpaul } 256213384Smarius mii->mii_media_active |= IFM_HDX; 25794149Swpaul } else 258164711Smarius mii->mii_media_active = ife->ifm_media; 25994149Swpaul} 260