1139749Simp/*- 250983Swpaul * Copyright (c) 1997, 1998, 1999 350983Swpaul * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 450983Swpaul * 550983Swpaul * Redistribution and use in source and binary forms, with or without 650983Swpaul * modification, are permitted provided that the following conditions 750983Swpaul * are met: 850983Swpaul * 1. Redistributions of source code must retain the above copyright 950983Swpaul * notice, this list of conditions and the following disclaimer. 1050983Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1150983Swpaul * notice, this list of conditions and the following disclaimer in the 1250983Swpaul * documentation and/or other materials provided with the distribution. 1350983Swpaul * 3. All advertising materials mentioning features or use of this software 1450983Swpaul * must display the following acknowledgement: 1550983Swpaul * This product includes software developed by Bill Paul. 1650983Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1750983Swpaul * may be used to endorse or promote products derived from this software 1850983Swpaul * without specific prior written permission. 1950983Swpaul * 2050983Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2150983Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2250983Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2350983Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 2450983Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2550983Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2650983Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2750983Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2850983Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2950983Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 3050983Swpaul * THE POSSIBILITY OF SUCH DAMAGE. 3150983Swpaul */ 3250983Swpaul 33119418Sobrien#include <sys/cdefs.h> 34119418Sobrien__FBSDID("$FreeBSD$"); 35119418Sobrien 3650983Swpaul/* 3750983Swpaul * driver for AMD AM79c873 PHYs 38164835Smarius * This driver also works for Davicom DM910{1,2} PHYs, which appear 39164835Smarius * to be AM79c873 workalikes. 4050983Swpaul */ 4150983Swpaul 4250983Swpaul#include <sys/param.h> 4350983Swpaul#include <sys/systm.h> 4450983Swpaul#include <sys/kernel.h> 45129876Sphk#include <sys/module.h> 4650983Swpaul#include <sys/socket.h> 4750983Swpaul#include <sys/bus.h> 4850983Swpaul 4950983Swpaul#include <net/if.h> 5050983Swpaul#include <net/if_media.h> 5150983Swpaul 5250983Swpaul#include <dev/mii/mii.h> 5350983Swpaul#include <dev/mii/miivar.h> 54109514Sobrien#include "miidevs.h" 5550983Swpaul 5650983Swpaul#include <dev/mii/amphyreg.h> 5750983Swpaul 5850983Swpaul#include "miibus_if.h" 5950983Swpaul 60105135Salfredstatic int amphy_probe(device_t); 61105135Salfredstatic int amphy_attach(device_t); 6250983Swpaul 6350983Swpaulstatic device_method_t amphy_methods[] = { 6450983Swpaul /* device interface */ 6550983Swpaul DEVMETHOD(device_probe, amphy_probe), 6650983Swpaul DEVMETHOD(device_attach, amphy_attach), 6795722Sphk DEVMETHOD(device_detach, mii_phy_detach), 6850983Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 69227908Smarius DEVMETHOD_END 7050983Swpaul}; 7150983Swpaul 7250983Swpaulstatic devclass_t amphy_devclass; 7350983Swpaul 7450983Swpaulstatic driver_t amphy_driver = { 7550983Swpaul "amphy", 7650983Swpaul amphy_methods, 7750983Swpaul sizeof(struct mii_softc) 7850983Swpaul}; 7950983Swpaul 8050983SwpaulDRIVER_MODULE(amphy, miibus, amphy_driver, amphy_devclass, 0, 0); 8150983Swpaul 8292739Salfredstatic int amphy_service(struct mii_softc *, struct mii_data *, int); 8392739Salfredstatic void amphy_status(struct mii_softc *); 8450983Swpaul 85164827Smariusstatic const struct mii_phydesc amphys[] = { 86221407Smarius MII_PHY_DESC(xxDAVICOM, DM9102), 87164827Smarius MII_PHY_DESC(xxDAVICOM, DM9101), 88221407Smarius MII_PHY_DESC(yyDAVICOM, DM9101), 89164827Smarius MII_PHY_END 90164827Smarius}; 91164827Smarius 92221407Smariusstatic const struct mii_phy_funcs amphy_funcs = { 93221407Smarius amphy_service, 94221407Smarius amphy_status, 95221407Smarius mii_phy_reset 96221407Smarius}; 97221407Smarius 98105135Salfredstatic int 99150763Simpamphy_probe(device_t dev) 10050983Swpaul{ 10150983Swpaul 102164827Smarius return (mii_phy_dev_probe(dev, amphys, BUS_PROBE_DEFAULT)); 10350983Swpaul} 10450983Swpaul 105105135Salfredstatic int 106150763Simpamphy_attach(device_t dev) 10750983Swpaul{ 10850983Swpaul 109221407Smarius mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &hy_funcs, 1); 110164835Smarius return (0); 11150983Swpaul} 11250983Swpaul 11384145Sjlemonstatic int 114150763Simpamphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 11550983Swpaul{ 11650983Swpaul 11750983Swpaul switch (cmd) { 11850983Swpaul case MII_POLLSTAT: 11950983Swpaul break; 12050983Swpaul 12150983Swpaul case MII_MEDIACHG: 12250983Swpaul /* 12350983Swpaul * If the interface is not up, don't do anything. 12450983Swpaul */ 12550983Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 12650983Swpaul break; 12750983Swpaul 128164835Smarius mii_phy_setmedia(sc); 12950983Swpaul break; 13050983Swpaul 13150983Swpaul case MII_TICK: 13284145Sjlemon if (mii_phy_tick(sc) == EJUSTRETURN) 13350983Swpaul return (0); 13450983Swpaul break; 13550983Swpaul } 13650983Swpaul 13750983Swpaul /* Update the media status. */ 138221407Smarius PHY_STATUS(sc); 13950983Swpaul 14050983Swpaul /* Callback if something changed. */ 14184145Sjlemon mii_phy_update(sc, cmd); 14250983Swpaul return (0); 14350983Swpaul} 14450983Swpaul 14584145Sjlemonstatic void 146150763Simpamphy_status(struct mii_softc *sc) 14750983Swpaul{ 14850983Swpaul struct mii_data *mii = sc->mii_pdata; 149164835Smarius struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 15050983Swpaul int bmsr, bmcr, par, anlpar; 15150983Swpaul 15250983Swpaul mii->mii_media_status = IFM_AVALID; 15350983Swpaul mii->mii_media_active = IFM_ETHER; 15450983Swpaul 15550983Swpaul bmsr = PHY_READ(sc, MII_BMSR) | 15650983Swpaul PHY_READ(sc, MII_BMSR); 15750983Swpaul if (bmsr & BMSR_LINK) 15850983Swpaul mii->mii_media_status |= IFM_ACTIVE; 15950983Swpaul 16050983Swpaul bmcr = PHY_READ(sc, MII_BMCR); 16150983Swpaul if (bmcr & BMCR_ISO) { 16250983Swpaul mii->mii_media_active |= IFM_NONE; 16350983Swpaul mii->mii_media_status = 0; 16450983Swpaul return; 16550983Swpaul } 16650983Swpaul 16750983Swpaul if (bmcr & BMCR_LOOP) 16850983Swpaul mii->mii_media_active |= IFM_LOOP; 16950983Swpaul 17050983Swpaul if (bmcr & BMCR_AUTOEN) { 17150983Swpaul /* 172175703Smarius * The PAR status bits are only valid if autonegotiation 17350983Swpaul * has completed (or it's disabled). 17450983Swpaul */ 17550983Swpaul if ((bmsr & BMSR_ACOMP) == 0) { 17650983Swpaul /* Erg, still trying, I guess... */ 17750983Swpaul mii->mii_media_active |= IFM_NONE; 17850983Swpaul return; 17950983Swpaul } 18050983Swpaul 18150983Swpaul if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 18250983Swpaul anlpar = PHY_READ(sc, MII_ANAR) & 18350983Swpaul PHY_READ(sc, MII_ANLPAR); 184173665Syongari if (anlpar & ANLPAR_TX_FD) 185173665Syongari mii->mii_media_active |= IFM_100_TX|IFM_FDX; 186173665Syongari else if (anlpar & ANLPAR_T4) 187213384Smarius mii->mii_media_active |= IFM_100_T4|IFM_HDX; 18850983Swpaul else if (anlpar & ANLPAR_TX) 189213384Smarius mii->mii_media_active |= IFM_100_TX|IFM_HDX; 19050983Swpaul else if (anlpar & ANLPAR_10_FD) 19150983Swpaul mii->mii_media_active |= IFM_10_T|IFM_FDX; 19250983Swpaul else if (anlpar & ANLPAR_10) 193213384Smarius mii->mii_media_active |= IFM_10_T|IFM_HDX; 19450983Swpaul else 19550983Swpaul mii->mii_media_active |= IFM_NONE; 19650983Swpaul return; 19750983Swpaul } 19850983Swpaul 19950983Swpaul /* 20050983Swpaul * Link partner is not capable of autonegotiation. 20150983Swpaul */ 20250983Swpaul par = PHY_READ(sc, MII_AMPHY_DSCSR); 20350983Swpaul if (par & DSCSR_100FDX) 20450983Swpaul mii->mii_media_active |= IFM_100_TX|IFM_FDX; 20550983Swpaul else if (par & DSCSR_100HDX) 206213384Smarius mii->mii_media_active |= IFM_100_TX|IFM_HDX; 20750983Swpaul else if (par & DSCSR_10FDX) 20850983Swpaul mii->mii_media_active |= IFM_10_T|IFM_HDX; 20950983Swpaul else if (par & DSCSR_10HDX) 210213384Smarius mii->mii_media_active |= IFM_10_T|IFM_HDX; 211221407Smarius if ((mii->mii_media_active & IFM_FDX) != 0) 212221407Smarius mii->mii_media_active |= mii_phy_flowstatus(sc); 21350983Swpaul } else 214164835Smarius mii->mii_media_active = ife->ifm_media; 21550983Swpaul} 216