rlphy.c revision 50758
150702Swpaul/* 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 * $FreeBSD: head/sys/dev/mii/rlphy.c 50758 1999-09-01 17:07:27Z wpaul $ 3350702Swpaul */ 3450702Swpaul 3550702Swpaul/* 3650702Swpaul * driver for RealTek 8139 internal PHYs 3750702Swpaul */ 3850702Swpaul 3950702Swpaul#include <sys/param.h> 4050702Swpaul#include <sys/systm.h> 4150702Swpaul#include <sys/kernel.h> 4250702Swpaul#include <sys/malloc.h> 4350702Swpaul#include <sys/socket.h> 4450702Swpaul#include <sys/bus.h> 4550702Swpaul 4650702Swpaul#include <net/if.h> 4750702Swpaul#include <net/if_media.h> 4850702Swpaul 4950702Swpaul#include <dev/mii/mii.h> 5050702Swpaul#include <dev/mii/miivar.h> 5150702Swpaul 5250702Swpaul#include "miibus_if.h" 5350702Swpaul 5450702Swpaul#if !defined(lint) 5550702Swpaulstatic const char rcsid[] = 5650702Swpaul "$FreeBSD: head/sys/dev/mii/rlphy.c 50758 1999-09-01 17:07:27Z wpaul $"; 5750702Swpaul#endif 5850702Swpaul 5950702Swpaulstatic int rlphy_probe __P((device_t)); 6050702Swpaulstatic int rlphy_attach __P((device_t)); 6150702Swpaulstatic int rlphy_detach __P((device_t)); 6250702Swpaul 6350702Swpaulstatic device_method_t rlphy_methods[] = { 6450702Swpaul /* device interface */ 6550702Swpaul DEVMETHOD(device_probe, rlphy_probe), 6650702Swpaul DEVMETHOD(device_attach, rlphy_attach), 6750702Swpaul DEVMETHOD(device_detach, rlphy_detach), 6850702Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 6950702Swpaul { 0, 0 } 7050702Swpaul}; 7150702Swpaul 7250702Swpaulstatic devclass_t rlphy_devclass; 7350702Swpaul 7450702Swpaulstatic driver_t rlphy_driver = { 7550702Swpaul "rlphy", 7650702Swpaul rlphy_methods, 7750702Swpaul sizeof(struct mii_softc) 7850702Swpaul}; 7950702Swpaul 8050702SwpaulDRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0); 8150702Swpaul 8250702Swpaulint rlphy_service __P((struct mii_softc *, struct mii_data *, int)); 8350702Swpaulvoid rlphy_reset __P((struct mii_softc *)); 8450702Swpaul 8550702Swpaulstatic int rlphy_probe(dev) 8650702Swpaul device_t dev; 8750702Swpaul{ 8850702Swpaul struct mii_attach_args *ma; 8950702Swpaul device_t parent; 9050702Swpaul 9150702Swpaul ma = device_get_ivars(dev); 9250702Swpaul parent = device_get_parent(device_get_parent(dev)); 9350702Swpaul 9450702Swpaul /* 9550702Swpaul * RealTek PHY doesn't have vendor/device ID registers: 9650702Swpaul * the rl driver fakes up a return value of all zeros. 9750702Swpaul */ 9850702Swpaul if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || 9950702Swpaul MII_MODEL(ma->mii_id2) != 0) 10050702Swpaul return (ENXIO); 10150702Swpaul 10250702Swpaul /* 10350702Swpaul * Make sure the parent is an `rl'. 10450702Swpaul */ 10550702Swpaul if (strcmp(device_get_name(parent), "rl") != 0) 10650702Swpaul return (ENXIO); 10750702Swpaul 10850702Swpaul device_set_desc(dev, "RealTek internal media interface"); 10950702Swpaul 11050702Swpaul return (0); 11150702Swpaul} 11250702Swpaul 11350702Swpaulstatic int rlphy_attach(dev) 11450702Swpaul device_t dev; 11550702Swpaul{ 11650702Swpaul struct mii_softc *sc; 11750702Swpaul struct mii_attach_args *ma; 11850702Swpaul struct mii_data *mii; 11950702Swpaul 12050702Swpaul sc = device_get_softc(dev); 12150702Swpaul ma = device_get_ivars(dev); 12250702Swpaul sc->mii_dev = device_get_parent(dev); 12350702Swpaul mii = device_get_softc(sc->mii_dev); 12450702Swpaul 12550702Swpaul /* 12650702Swpaul * The RealTek PHY can never be isolated, so never allow non-zero 12750702Swpaul * instances! 12850702Swpaul */ 12950702Swpaul if (mii->mii_instance != 0) { 13050702Swpaul device_printf(dev, "ignoring this PHY, non-zero instance\n"); 13150702Swpaul return(ENXIO); 13250702Swpaul } 13350702Swpaul 13450758Swpaul LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 13550758Swpaul 13650758Swpaul sc->mii_inst = mii->mii_instance; 13750758Swpaul sc->mii_phy = ma->mii_phyno; 13850758Swpaul sc->mii_service = rlphy_service; 13950758Swpaul sc->mii_pdata = mii; 14050702Swpaul mii->mii_instance++; 14150702Swpaul 14250702Swpaul sc->mii_flags |= MIIF_NOISOLATE; 14350702Swpaul 14450702Swpaul#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 14550702Swpaul 14650702Swpaul#if 0 /* See above. */ 14750702Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 14850702Swpaul BMCR_ISO); 14950702Swpaul#endif 15050702Swpaul 15150702Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 15250702Swpaul BMCR_LOOP|BMCR_S100); 15350702Swpaul 15450702Swpaul rlphy_reset(sc); 15550702Swpaul 15650702Swpaul sc->mii_capabilities = 15750702Swpaul PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 15850702Swpaul device_printf(dev, " "); 15950702Swpaul if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 16050702Swpaul printf("no media present"); 16150702Swpaul else 16250702Swpaul mii_add_media(mii, sc->mii_capabilities, 16350702Swpaul sc->mii_inst); 16450702Swpaul printf("\n"); 16550702Swpaul#undef ADD 16650702Swpaul MIIBUS_MEDIAINIT(sc->mii_dev); 16750702Swpaul return(0); 16850702Swpaul} 16950702Swpaul 17050702Swpaulstatic int rlphy_detach(dev) 17150702Swpaul device_t dev; 17250702Swpaul{ 17350702Swpaul struct mii_softc *sc; 17450702Swpaul struct mii_data *mii; 17550702Swpaul 17650702Swpaul sc = device_get_softc(dev); 17750702Swpaul mii = device_get_softc(device_get_softc(dev)); 17850702Swpaul sc->mii_dev = NULL; 17950702Swpaul LIST_REMOVE(sc, mii_list); 18050702Swpaul 18150702Swpaul return(0); 18250702Swpaul} 18350702Swpaul 18450702Swpaulint 18550702Swpaulrlphy_service(sc, mii, cmd) 18650702Swpaul struct mii_softc *sc; 18750702Swpaul struct mii_data *mii; 18850702Swpaul int cmd; 18950702Swpaul{ 19050702Swpaul struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 19150702Swpaul 19250702Swpaul /* 19350702Swpaul * We can't isolate the RealTek PHY, so it has to be the only one! 19450702Swpaul */ 19550702Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 19650702Swpaul panic("rlphy_service: can't isolate RealTek PHY"); 19750702Swpaul 19850702Swpaul switch (cmd) { 19950702Swpaul case MII_POLLSTAT: 20050702Swpaul break; 20150702Swpaul 20250702Swpaul case MII_MEDIACHG: 20350702Swpaul /* 20450702Swpaul * If the interface is not up, don't do anything. 20550702Swpaul */ 20650702Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 20750702Swpaul break; 20850702Swpaul 20950702Swpaul switch (IFM_SUBTYPE(ife->ifm_media)) { 21050702Swpaul case IFM_AUTO: 21150702Swpaul /* 21250702Swpaul * If we're already in auto mode, just return. 21350702Swpaul */ 21450702Swpaul if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 21550702Swpaul return (0); 21650702Swpaul (void) mii_phy_auto(sc, 0); 21750702Swpaul break; 21850702Swpaul case IFM_100_T4: 21950702Swpaul /* 22050702Swpaul * XXX Not supported as a manual setting right now. 22150702Swpaul */ 22250702Swpaul return (EINVAL); 22350702Swpaul default: 22450702Swpaul /* 22550702Swpaul * BMCR data is stored in the ifmedia entry. 22650702Swpaul */ 22750702Swpaul PHY_WRITE(sc, MII_ANAR, 22850702Swpaul mii_anar(ife->ifm_media)); 22950702Swpaul PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 23050702Swpaul } 23150702Swpaul break; 23250702Swpaul 23350702Swpaul case MII_TICK: 23450702Swpaul /* 23550702Swpaul * Only used for autonegotiation. 23650702Swpaul */ 23750702Swpaul if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 23850702Swpaul return (0); 23950702Swpaul 24050702Swpaul /* 24150702Swpaul * Is the interface even up? 24250702Swpaul */ 24350702Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 24450702Swpaul return (0); 24550702Swpaul 24650702Swpaul /* 24750702Swpaul * Only retry autonegotiation every 5 seconds. 24850702Swpaul */ 24950702Swpaul if (++sc->mii_ticks != 5) 25050702Swpaul return (0); 25150702Swpaul 25250702Swpaul sc->mii_ticks = 0; 25350702Swpaul 25450702Swpaul /* 25550702Swpaul * The RealTek PHY's autonegotiation doesn't need to be 25650702Swpaul * kicked; it continues in the background. 25750702Swpaul */ 25850702Swpaul break; 25950702Swpaul } 26050702Swpaul 26150702Swpaul /* Update the media status. */ 26250702Swpaul ukphy_status(sc); 26350702Swpaul 26450702Swpaul /* Callback if something changed. */ 26550702Swpaul if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 26650702Swpaul MIIBUS_STATCHG(sc->mii_dev); 26750702Swpaul sc->mii_active = mii->mii_media_active; 26850702Swpaul } 26950702Swpaul return (0); 27050702Swpaul} 27150702Swpaul 27250702Swpaulvoid 27350702Swpaulrlphy_reset(sc) 27450702Swpaul struct mii_softc *sc; 27550702Swpaul{ 27650702Swpaul 27750702Swpaul mii_phy_reset(sc); 27850702Swpaul 27950702Swpaul /* 28050702Swpaul * XXX RealTek PHY doesn't set the BMCR properly after 28150702Swpaul * XXX reset, which breaks autonegotiation. 28250702Swpaul */ 28350702Swpaul PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_AUTOEN|BMCR_FDX); 28450702Swpaul} 285