nsphy.c revision 92739
150120Swpaul/* $NetBSD: nsphy.c,v 1.18 1999/07/14 23:57:36 thorpej Exp $ */ 250120Swpaul 350120Swpaul/*- 450120Swpaul * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 550120Swpaul * All rights reserved. 650120Swpaul * 750120Swpaul * This code is derived from software contributed to The NetBSD Foundation 850120Swpaul * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 950120Swpaul * NASA Ames Research Center. 1050120Swpaul * 1150120Swpaul * Redistribution and use in source and binary forms, with or without 1250120Swpaul * modification, are permitted provided that the following conditions 1350120Swpaul * are met: 1450120Swpaul * 1. Redistributions of source code must retain the above copyright 1550120Swpaul * notice, this list of conditions and the following disclaimer. 1650120Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1750120Swpaul * notice, this list of conditions and the following disclaimer in the 1850120Swpaul * documentation and/or other materials provided with the distribution. 1950120Swpaul * 3. All advertising materials mentioning features or use of this software 2050120Swpaul * must display the following acknowledgement: 2150120Swpaul * This product includes software developed by the NetBSD 2250120Swpaul * Foundation, Inc. and its contributors. 2350120Swpaul * 4. Neither the name of The NetBSD Foundation nor the names of its 2450120Swpaul * contributors may be used to endorse or promote products derived 2550120Swpaul * from this software without specific prior written permission. 2650120Swpaul * 2750120Swpaul * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2850120Swpaul * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2950120Swpaul * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 3050120Swpaul * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 3150120Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 3250120Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 3350120Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3450120Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 3550120Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3650120Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3750120Swpaul * POSSIBILITY OF SUCH DAMAGE. 3850120Swpaul */ 3950120Swpaul 4050120Swpaul/* 4150120Swpaul * Copyright (c) 1997 Manuel Bouyer. All rights reserved. 4250120Swpaul * 4350120Swpaul * Redistribution and use in source and binary forms, with or without 4450120Swpaul * modification, are permitted provided that the following conditions 4550120Swpaul * are met: 4650120Swpaul * 1. Redistributions of source code must retain the above copyright 4750120Swpaul * notice, this list of conditions and the following disclaimer. 4850120Swpaul * 2. Redistributions in binary form must reproduce the above copyright 4950120Swpaul * notice, this list of conditions and the following disclaimer in the 5050120Swpaul * documentation and/or other materials provided with the distribution. 5150120Swpaul * 3. All advertising materials mentioning features or use of this software 5250120Swpaul * must display the following acknowledgement: 5350120Swpaul * This product includes software developed by Manuel Bouyer. 5450120Swpaul * 4. The name of the author may not be used to endorse or promote products 5550120Swpaul * derived from this software without specific prior written permission. 5650120Swpaul * 5750120Swpaul * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 5850120Swpaul * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 5950120Swpaul * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 6050120Swpaul * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 6150120Swpaul * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 6250120Swpaul * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 6350120Swpaul * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 6450120Swpaul * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 6550120Swpaul * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 6650120Swpaul * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 6750120Swpaul */ 6850120Swpaul 6950120Swpaul/* 7050120Swpaul * driver for National Semiconductor's DP83840A ethernet 10/100 PHY 7150120Swpaul * Data Sheet available from www.national.com 7250120Swpaul */ 7350120Swpaul 7450120Swpaul#include <sys/param.h> 7550120Swpaul#include <sys/systm.h> 7650120Swpaul#include <sys/kernel.h> 7750120Swpaul#include <sys/socket.h> 7850120Swpaul#include <sys/errno.h> 7950120Swpaul#include <sys/module.h> 8050120Swpaul#include <sys/bus.h> 8150120Swpaul 8250120Swpaul#include <net/if.h> 8350120Swpaul#include <net/if_media.h> 8450120Swpaul 8550120Swpaul#include <dev/mii/mii.h> 8650120Swpaul#include <dev/mii/miivar.h> 8750120Swpaul#include <dev/mii/miidevs.h> 8850120Swpaul 8950120Swpaul#include <dev/mii/nsphyreg.h> 9050120Swpaul 9150120Swpaul#include "miibus_if.h" 9250120Swpaul 9350120Swpaul#if !defined(lint) 9450120Swpaulstatic const char rcsid[] = 9550477Speter "$FreeBSD: head/sys/dev/mii/nsphy.c 92739 2002-03-20 02:08:01Z alfred $"; 9650120Swpaul#endif 9750120Swpaul 9892739Salfredstatic int nsphy_probe (device_t); 9992739Salfredstatic int nsphy_attach (device_t); 10092739Salfredstatic int nsphy_detach (device_t); 10150120Swpaul 10250120Swpaulstatic device_method_t nsphy_methods[] = { 10350120Swpaul /* device interface */ 10450120Swpaul DEVMETHOD(device_probe, nsphy_probe), 10550120Swpaul DEVMETHOD(device_attach, nsphy_attach), 10650120Swpaul DEVMETHOD(device_detach, nsphy_detach), 10750120Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 10850120Swpaul { 0, 0 } 10950120Swpaul}; 11050120Swpaul 11150120Swpaulstatic devclass_t nsphy_devclass; 11250120Swpaul 11350120Swpaulstatic driver_t nsphy_driver = { 11450120Swpaul "nsphy", 11550120Swpaul nsphy_methods, 11650120Swpaul sizeof(struct mii_softc) 11750120Swpaul}; 11850120Swpaul 11950120SwpaulDRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); 12050120Swpaul 12192739Salfredstatic int nsphy_service(struct mii_softc *, struct mii_data *, int); 12292739Salfredstatic void nsphy_status(struct mii_softc *); 12350120Swpaul 12450120Swpaulstatic int nsphy_probe(dev) 12550120Swpaul device_t dev; 12650120Swpaul{ 12750120Swpaul struct mii_attach_args *ma; 12850120Swpaul 12950120Swpaul ma = device_get_ivars(dev); 13050120Swpaul 13159153Ssemenu if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 13259153Ssemenu MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) { 13359153Ssemenu device_set_desc(dev, MII_STR_NATSEMI_DP83840); 13459153Ssemenu } else 13550120Swpaul return (ENXIO); 13650120Swpaul 13750120Swpaul return (0); 13850120Swpaul} 13950120Swpaul 14050120Swpaulstatic int nsphy_attach(dev) 14150120Swpaul device_t dev; 14250120Swpaul{ 14350120Swpaul struct mii_softc *sc; 14450120Swpaul struct mii_attach_args *ma; 14550120Swpaul struct mii_data *mii; 14650120Swpaul 14750120Swpaul sc = device_get_softc(dev); 14850120Swpaul ma = device_get_ivars(dev); 14950120Swpaul sc->mii_dev = device_get_parent(dev); 15050120Swpaul mii = device_get_softc(sc->mii_dev); 15150120Swpaul LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 15250120Swpaul 15350120Swpaul sc->mii_inst = mii->mii_instance; 15450120Swpaul sc->mii_phy = ma->mii_phyno; 15550120Swpaul sc->mii_service = nsphy_service; 15650120Swpaul sc->mii_pdata = mii; 15750120Swpaul 15850120Swpaul#ifdef foo 15950120Swpaul /* 16050120Swpaul * i82557 wedges if all of its PHYs are isolated! 16150120Swpaul */ 16250120Swpaul if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 16350120Swpaul "fxp") == 0 && mii->mii_instance == 0) 16450120Swpaul#endif 16550120Swpaul 16650120Swpaul sc->mii_flags |= MIIF_NOISOLATE; 16750120Swpaul mii->mii_instance++; 16850120Swpaul 16950120Swpaul#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 17050120Swpaul 17150120Swpaul#if 0 17250120Swpaul /* Can't do this on the i82557! */ 17350120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 17450120Swpaul BMCR_ISO); 17550120Swpaul#endif 17650120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 17750120Swpaul BMCR_LOOP|BMCR_S100); 17850120Swpaul 17950120Swpaul mii_phy_reset(sc); 18050120Swpaul 18150120Swpaul sc->mii_capabilities = 18250120Swpaul PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 18350120Swpaul device_printf(dev, " "); 18450120Swpaul if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 18550120Swpaul printf("no media present"); 18650120Swpaul else 18750120Swpaul mii_add_media(mii, sc->mii_capabilities, 18850120Swpaul sc->mii_inst); 18950120Swpaul printf("\n"); 19050120Swpaul#undef ADD 19150120Swpaul 19250120Swpaul MIIBUS_MEDIAINIT(sc->mii_dev); 19350120Swpaul return(0); 19450120Swpaul} 19550120Swpaul 19650120Swpaulstatic int nsphy_detach(dev) 19750120Swpaul device_t dev; 19850120Swpaul{ 19950120Swpaul struct mii_softc *sc; 20050120Swpaul struct mii_data *mii; 20150120Swpaul 20250120Swpaul sc = device_get_softc(dev); 20350120Swpaul mii = device_get_softc(device_get_parent(dev)); 20469925Swpaul mii_phy_auto_stop(sc); 20550120Swpaul sc->mii_dev = NULL; 20650120Swpaul LIST_REMOVE(sc, mii_list); 20750120Swpaul 20850120Swpaul return(0); 20950120Swpaul} 21050120Swpaul 21184145Sjlemonstatic int 21250120Swpaulnsphy_service(sc, mii, cmd) 21350120Swpaul struct mii_softc *sc; 21450120Swpaul struct mii_data *mii; 21550120Swpaul int cmd; 21650120Swpaul{ 21750120Swpaul struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 21850120Swpaul int reg; 21950120Swpaul 22050120Swpaul switch (cmd) { 22150120Swpaul case MII_POLLSTAT: 22250120Swpaul /* 22350120Swpaul * If we're not polling our PHY instance, just return. 22450120Swpaul */ 22550120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 22650120Swpaul return (0); 22750120Swpaul break; 22850120Swpaul 22950120Swpaul case MII_MEDIACHG: 23050120Swpaul /* 23150120Swpaul * If the media indicates a different PHY instance, 23250120Swpaul * isolate ourselves. 23350120Swpaul */ 23450120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 23550120Swpaul reg = PHY_READ(sc, MII_BMCR); 23650120Swpaul PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 23750120Swpaul return (0); 23850120Swpaul } 23950120Swpaul 24050120Swpaul /* 24150120Swpaul * If the interface is not up, don't do anything. 24250120Swpaul */ 24350120Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 24450120Swpaul break; 24550120Swpaul 24650120Swpaul reg = PHY_READ(sc, MII_NSPHY_PCR); 24750120Swpaul 24850120Swpaul /* 24950120Swpaul * Set up the PCR to use LED4 to indicate full-duplex 25050120Swpaul * in both 10baseT and 100baseTX modes. 25150120Swpaul */ 25250120Swpaul reg |= PCR_LED4MODE; 25350120Swpaul 25450120Swpaul /* 25550120Swpaul * Make sure Carrier Intgrity Monitor function is 25650120Swpaul * disabled (normal for Node operation, but sometimes 25750120Swpaul * it's not set?!) 25850120Swpaul */ 25950120Swpaul reg |= PCR_CIMDIS; 26050120Swpaul 26150120Swpaul /* 26250120Swpaul * Make sure "force link good" is set to normal mode. 26350120Swpaul * It's only intended for debugging. 26450120Swpaul */ 26550120Swpaul reg |= PCR_FLINK100; 26650120Swpaul 26750120Swpaul /* 26850120Swpaul * Mystery bits which are supposedly `reserved', 26950120Swpaul * but we seem to need to set them when the PHY 27074353Sjlemon * is connected to some interfaces: 27174353Sjlemon * 27274353Sjlemon * 0x0400 is needed for fxp 27374353Sjlemon * (Intel EtherExpress Pro 10+/100B, 82557 chip) 27474353Sjlemon * (nsphy with a DP83840 chip) 27574353Sjlemon * 0x0100 may be needed for some other card 27650120Swpaul */ 27750120Swpaul reg |= 0x0100 | 0x0400; 27874353Sjlemon 27977634Sjlemon if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 28077634Sjlemon "fxp") == 0) 28177634Sjlemon PHY_WRITE(sc, MII_NSPHY_PCR, reg); 28274353Sjlemon 28350120Swpaul switch (IFM_SUBTYPE(ife->ifm_media)) { 28450120Swpaul case IFM_AUTO: 28550120Swpaul /* 28650120Swpaul * If we're already in auto mode, just return. 28750120Swpaul */ 28850120Swpaul if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 28950120Swpaul return (0); 29050120Swpaul (void) mii_phy_auto(sc, 1); 29150120Swpaul break; 29250120Swpaul case IFM_100_T4: 29350120Swpaul /* 29450120Swpaul * XXX Not supported as a manual setting right now. 29550120Swpaul */ 29650120Swpaul return (EINVAL); 29750120Swpaul default: 29850120Swpaul /* 29950120Swpaul * BMCR data is stored in the ifmedia entry. 30050120Swpaul */ 30150120Swpaul PHY_WRITE(sc, MII_ANAR, 30250120Swpaul mii_anar(ife->ifm_media)); 30350120Swpaul PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 30450120Swpaul } 30550120Swpaul break; 30650120Swpaul 30750120Swpaul case MII_TICK: 30850120Swpaul /* 30950120Swpaul * If we're not currently selected, just return. 31050120Swpaul */ 31150120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 31250120Swpaul return (0); 31384145Sjlemon if (mii_phy_tick(sc) == EJUSTRETURN) 31450120Swpaul return (0); 31550120Swpaul break; 31650120Swpaul } 31750120Swpaul 31850120Swpaul /* Update the media status. */ 31950120Swpaul nsphy_status(sc); 32050120Swpaul 32150120Swpaul /* Callback if something changed. */ 32284145Sjlemon mii_phy_update(sc, cmd); 32350120Swpaul return (0); 32450120Swpaul} 32550120Swpaul 32684145Sjlemonstatic void 32750120Swpaulnsphy_status(sc) 32850120Swpaul struct mii_softc *sc; 32950120Swpaul{ 33050120Swpaul struct mii_data *mii = sc->mii_pdata; 33150120Swpaul int bmsr, bmcr, par, anlpar; 33250120Swpaul 33350120Swpaul mii->mii_media_status = IFM_AVALID; 33450120Swpaul mii->mii_media_active = IFM_ETHER; 33550120Swpaul 33650120Swpaul bmsr = PHY_READ(sc, MII_BMSR) | 33750120Swpaul PHY_READ(sc, MII_BMSR); 33850120Swpaul if (bmsr & BMSR_LINK) 33950120Swpaul mii->mii_media_status |= IFM_ACTIVE; 34050120Swpaul 34150120Swpaul bmcr = PHY_READ(sc, MII_BMCR); 34250120Swpaul if (bmcr & BMCR_ISO) { 34350120Swpaul mii->mii_media_active |= IFM_NONE; 34450120Swpaul mii->mii_media_status = 0; 34550120Swpaul return; 34650120Swpaul } 34750120Swpaul 34850120Swpaul if (bmcr & BMCR_LOOP) 34950120Swpaul mii->mii_media_active |= IFM_LOOP; 35050120Swpaul 35150120Swpaul if (bmcr & BMCR_AUTOEN) { 35250120Swpaul /* 35350120Swpaul * The PAR status bits are only valid of autonegotiation 35450120Swpaul * has completed (or it's disabled). 35550120Swpaul */ 35650120Swpaul if ((bmsr & BMSR_ACOMP) == 0) { 35750120Swpaul /* Erg, still trying, I guess... */ 35850120Swpaul mii->mii_media_active |= IFM_NONE; 35950120Swpaul return; 36050120Swpaul } 36150120Swpaul 36250120Swpaul /* 36350120Swpaul * Argh. The PAR doesn't seem to indicate duplex mode 36450120Swpaul * properly! Determine media based on link partner's 36550120Swpaul * advertised capabilities. 36650120Swpaul */ 36750120Swpaul if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 36850120Swpaul anlpar = PHY_READ(sc, MII_ANAR) & 36950120Swpaul PHY_READ(sc, MII_ANLPAR); 37050120Swpaul if (anlpar & ANLPAR_T4) 37150120Swpaul mii->mii_media_active |= IFM_100_T4; 37250120Swpaul else if (anlpar & ANLPAR_TX_FD) 37350120Swpaul mii->mii_media_active |= IFM_100_TX|IFM_FDX; 37450120Swpaul else if (anlpar & ANLPAR_TX) 37550120Swpaul mii->mii_media_active |= IFM_100_TX; 37650120Swpaul else if (anlpar & ANLPAR_10_FD) 37750120Swpaul mii->mii_media_active |= IFM_10_T|IFM_FDX; 37850120Swpaul else if (anlpar & ANLPAR_10) 37950120Swpaul mii->mii_media_active |= IFM_10_T; 38050120Swpaul else 38150120Swpaul mii->mii_media_active |= IFM_NONE; 38250120Swpaul return; 38350120Swpaul } 38450120Swpaul 38550120Swpaul /* 38650120Swpaul * Link partner is not capable of autonegotiation. 38750120Swpaul * We will never be in full-duplex mode if this is 38850120Swpaul * the case, so reading the PAR is OK. 38950120Swpaul */ 39050120Swpaul par = PHY_READ(sc, MII_NSPHY_PAR); 39150120Swpaul if (par & PAR_10) 39250120Swpaul mii->mii_media_active |= IFM_10_T; 39350120Swpaul else 39450120Swpaul mii->mii_media_active |= IFM_100_TX; 39550120Swpaul#if 0 39650120Swpaul if (par & PAR_FDX) 39750120Swpaul mii->mii_media_active |= IFM_FDX; 39850120Swpaul#endif 39950120Swpaul } else 40059153Ssemenu mii->mii_media_active |= mii_media_from_bmcr(bmcr); 40150120Swpaul} 402