nsphy.c revision 50120
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/malloc.h> 7850120Swpaul#include <sys/socket.h> 7950120Swpaul#include <sys/errno.h> 8050120Swpaul#include <sys/module.h> 8150120Swpaul#include <sys/bus.h> 8250120Swpaul 8350120Swpaul#include <net/if.h> 8450120Swpaul#include <net/if_media.h> 8550120Swpaul 8650120Swpaul#include <dev/mii/mii.h> 8750120Swpaul#include <dev/mii/miivar.h> 8850120Swpaul#include <dev/mii/miidevs.h> 8950120Swpaul 9050120Swpaul#include <dev/mii/nsphyreg.h> 9150120Swpaul 9250120Swpaul#include "miibus_if.h" 9350120Swpaul 9450120Swpaul#if !defined(lint) 9550120Swpaulstatic const char rcsid[] = 9650120Swpaul "$Id$"; 9750120Swpaul#endif 9850120Swpaul 9950120Swpaulstatic int nsphy_probe __P((device_t)); 10050120Swpaulstatic int nsphy_attach __P((device_t)); 10150120Swpaulstatic int nsphy_detach __P((device_t)); 10250120Swpaul 10350120Swpaulstatic device_method_t nsphy_methods[] = { 10450120Swpaul /* device interface */ 10550120Swpaul DEVMETHOD(device_probe, nsphy_probe), 10650120Swpaul DEVMETHOD(device_attach, nsphy_attach), 10750120Swpaul DEVMETHOD(device_detach, nsphy_detach), 10850120Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 10950120Swpaul { 0, 0 } 11050120Swpaul}; 11150120Swpaul 11250120Swpaulstatic devclass_t nsphy_devclass; 11350120Swpaul 11450120Swpaulstatic driver_t nsphy_driver = { 11550120Swpaul "nsphy", 11650120Swpaul nsphy_methods, 11750120Swpaul sizeof(struct mii_softc) 11850120Swpaul}; 11950120Swpaul 12050120SwpaulDRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); 12150120Swpaul 12250120Swpaulint nsphy_service __P((struct mii_softc *, struct mii_data *, int)); 12350120Swpaulvoid nsphy_status __P((struct mii_softc *)); 12450120Swpaul 12550120Swpaulstatic int nsphy_probe(dev) 12650120Swpaul device_t dev; 12750120Swpaul{ 12850120Swpaul struct mii_attach_args *ma; 12950120Swpaul 13050120Swpaul ma = device_get_ivars(dev); 13150120Swpaul 13250120Swpaul if (MII_OUI(ma->mii_id1, ma->mii_id2) != MII_OUI_NATSEMI || 13350120Swpaul MII_MODEL(ma->mii_id2) != MII_MODEL_NATSEMI_DP83840) 13450120Swpaul return (ENXIO); 13550120Swpaul 13650120Swpaul device_set_desc(dev, MII_STR_NATSEMI_DP83840); 13750120Swpaul 13850120Swpaul return (0); 13950120Swpaul} 14050120Swpaul 14150120Swpaulstatic int nsphy_attach(dev) 14250120Swpaul device_t dev; 14350120Swpaul{ 14450120Swpaul struct mii_softc *sc; 14550120Swpaul struct mii_attach_args *ma; 14650120Swpaul struct mii_data *mii; 14750120Swpaul 14850120Swpaul sc = device_get_softc(dev); 14950120Swpaul ma = device_get_ivars(dev); 15050120Swpaul sc->mii_dev = device_get_parent(dev); 15150120Swpaul mii = device_get_softc(sc->mii_dev); 15250120Swpaul LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 15350120Swpaul 15450120Swpaul sc->mii_inst = mii->mii_instance; 15550120Swpaul sc->mii_phy = ma->mii_phyno; 15650120Swpaul sc->mii_service = nsphy_service; 15750120Swpaul sc->mii_pdata = mii; 15850120Swpaul 15950120Swpaul#ifdef foo 16050120Swpaul /* 16150120Swpaul * i82557 wedges if all of its PHYs are isolated! 16250120Swpaul */ 16350120Swpaul if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 16450120Swpaul "fxp") == 0 && mii->mii_instance == 0) 16550120Swpaul#endif 16650120Swpaul 16750120Swpaul sc->mii_flags |= MIIF_NOISOLATE; 16850120Swpaul mii->mii_instance++; 16950120Swpaul 17050120Swpaul#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 17150120Swpaul 17250120Swpaul#if 0 17350120Swpaul /* Can't do this on the i82557! */ 17450120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 17550120Swpaul BMCR_ISO); 17650120Swpaul#endif 17750120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 17850120Swpaul BMCR_LOOP|BMCR_S100); 17950120Swpaul 18050120Swpaul mii_phy_reset(sc); 18150120Swpaul 18250120Swpaul sc->mii_capabilities = 18350120Swpaul PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 18450120Swpaul device_printf(dev, " "); 18550120Swpaul if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 18650120Swpaul printf("no media present"); 18750120Swpaul else 18850120Swpaul mii_add_media(mii, sc->mii_capabilities, 18950120Swpaul sc->mii_inst); 19050120Swpaul printf("\n"); 19150120Swpaul#undef ADD 19250120Swpaul 19350120Swpaul MIIBUS_MEDIAINIT(sc->mii_dev); 19450120Swpaul return(0); 19550120Swpaul} 19650120Swpaul 19750120Swpaulstatic int nsphy_detach(dev) 19850120Swpaul device_t dev; 19950120Swpaul{ 20050120Swpaul struct mii_softc *sc; 20150120Swpaul struct mii_data *mii; 20250120Swpaul 20350120Swpaul sc = device_get_softc(dev); 20450120Swpaul mii = device_get_softc(device_get_parent(dev)); 20550120Swpaul sc->mii_dev = NULL; 20650120Swpaul LIST_REMOVE(sc, mii_list); 20750120Swpaul 20850120Swpaul return(0); 20950120Swpaul} 21050120Swpaul 21150120Swpaulint 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#if 0 26850120Swpaul /* 26950120Swpaul * Mystery bits which are supposedly `reserved', 27050120Swpaul * but we seem to need to set them when the PHY 27150120Swpaul * is connected to some interfaces! 27250120Swpaul */ 27350120Swpaul reg |= 0x0100 | 0x0400; 27450120Swpaul#endif 27550120Swpaul/* 27650120Swpaul PHY_WRITE(sc, MII_NSPHY_PCR, reg); 27750120Swpaul*/ 27850120Swpaul switch (IFM_SUBTYPE(ife->ifm_media)) { 27950120Swpaul case IFM_AUTO: 28050120Swpaul /* 28150120Swpaul * If we're already in auto mode, just return. 28250120Swpaul */ 28350120Swpaul if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) 28450120Swpaul return (0); 28550120Swpaul (void) mii_phy_auto(sc, 1); 28650120Swpaul break; 28750120Swpaul case IFM_100_T4: 28850120Swpaul /* 28950120Swpaul * XXX Not supported as a manual setting right now. 29050120Swpaul */ 29150120Swpaul return (EINVAL); 29250120Swpaul default: 29350120Swpaul /* 29450120Swpaul * BMCR data is stored in the ifmedia entry. 29550120Swpaul */ 29650120Swpaul PHY_WRITE(sc, MII_ANAR, 29750120Swpaul mii_anar(ife->ifm_media)); 29850120Swpaul PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 29950120Swpaul } 30050120Swpaul break; 30150120Swpaul 30250120Swpaul case MII_TICK: 30350120Swpaul /* 30450120Swpaul * If we're not currently selected, just return. 30550120Swpaul */ 30650120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 30750120Swpaul return (0); 30850120Swpaul 30950120Swpaul /* 31050120Swpaul * Only used for autonegotiation. 31150120Swpaul */ 31250120Swpaul if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 31350120Swpaul return (0); 31450120Swpaul 31550120Swpaul /* 31650120Swpaul * Is the interface even up? 31750120Swpaul */ 31850120Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 31950120Swpaul return (0); 32050120Swpaul 32150120Swpaul /* 32250120Swpaul * Check to see if we have link. If we do, we don't 32350120Swpaul * need to restart the autonegotiation process. Read 32450120Swpaul * the BMSR twice in case it's latched. 32550120Swpaul */ 32650120Swpaul reg = PHY_READ(sc, MII_BMSR) | 32750120Swpaul PHY_READ(sc, MII_BMSR); 32850120Swpaul if (reg & BMSR_LINK) 32950120Swpaul return (0); 33050120Swpaul 33150120Swpaul /* 33250120Swpaul * Only retry autonegotiation every 5 seconds. 33350120Swpaul */ 33450120Swpaul if (++sc->mii_ticks != 5) 33550120Swpaul return (0); 33650120Swpaul 33750120Swpaul sc->mii_ticks = 0; 33850120Swpaul mii_phy_reset(sc); 33950120Swpaul if (mii_phy_auto(sc, 0) == EJUSTRETURN) 34050120Swpaul return (0); 34150120Swpaul break; 34250120Swpaul } 34350120Swpaul 34450120Swpaul /* Update the media status. */ 34550120Swpaul nsphy_status(sc); 34650120Swpaul 34750120Swpaul /* Callback if something changed. */ 34850120Swpaul if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) { 34950120Swpaul MIIBUS_STATCHG(sc->mii_dev); 35050120Swpaul sc->mii_active = mii->mii_media_active; 35150120Swpaul } 35250120Swpaul return (0); 35350120Swpaul} 35450120Swpaul 35550120Swpaulvoid 35650120Swpaulnsphy_status(sc) 35750120Swpaul struct mii_softc *sc; 35850120Swpaul{ 35950120Swpaul struct mii_data *mii = sc->mii_pdata; 36050120Swpaul int bmsr, bmcr, par, anlpar; 36150120Swpaul 36250120Swpaul mii->mii_media_status = IFM_AVALID; 36350120Swpaul mii->mii_media_active = IFM_ETHER; 36450120Swpaul 36550120Swpaul bmsr = PHY_READ(sc, MII_BMSR) | 36650120Swpaul PHY_READ(sc, MII_BMSR); 36750120Swpaul if (bmsr & BMSR_LINK) 36850120Swpaul mii->mii_media_status |= IFM_ACTIVE; 36950120Swpaul 37050120Swpaul bmcr = PHY_READ(sc, MII_BMCR); 37150120Swpaul if (bmcr & BMCR_ISO) { 37250120Swpaul mii->mii_media_active |= IFM_NONE; 37350120Swpaul mii->mii_media_status = 0; 37450120Swpaul return; 37550120Swpaul } 37650120Swpaul 37750120Swpaul if (bmcr & BMCR_LOOP) 37850120Swpaul mii->mii_media_active |= IFM_LOOP; 37950120Swpaul 38050120Swpaul if (bmcr & BMCR_AUTOEN) { 38150120Swpaul /* 38250120Swpaul * The PAR status bits are only valid of autonegotiation 38350120Swpaul * has completed (or it's disabled). 38450120Swpaul */ 38550120Swpaul if ((bmsr & BMSR_ACOMP) == 0) { 38650120Swpaul /* Erg, still trying, I guess... */ 38750120Swpaul mii->mii_media_active |= IFM_NONE; 38850120Swpaul return; 38950120Swpaul } 39050120Swpaul 39150120Swpaul /* 39250120Swpaul * Argh. The PAR doesn't seem to indicate duplex mode 39350120Swpaul * properly! Determine media based on link partner's 39450120Swpaul * advertised capabilities. 39550120Swpaul */ 39650120Swpaul if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 39750120Swpaul anlpar = PHY_READ(sc, MII_ANAR) & 39850120Swpaul PHY_READ(sc, MII_ANLPAR); 39950120Swpaul if (anlpar & ANLPAR_T4) 40050120Swpaul mii->mii_media_active |= IFM_100_T4; 40150120Swpaul else if (anlpar & ANLPAR_TX_FD) 40250120Swpaul mii->mii_media_active |= IFM_100_TX|IFM_FDX; 40350120Swpaul else if (anlpar & ANLPAR_TX) 40450120Swpaul mii->mii_media_active |= IFM_100_TX; 40550120Swpaul else if (anlpar & ANLPAR_10_FD) 40650120Swpaul mii->mii_media_active |= IFM_10_T|IFM_FDX; 40750120Swpaul else if (anlpar & ANLPAR_10) 40850120Swpaul mii->mii_media_active |= IFM_10_T; 40950120Swpaul else 41050120Swpaul mii->mii_media_active |= IFM_NONE; 41150120Swpaul return; 41250120Swpaul } 41350120Swpaul 41450120Swpaul /* 41550120Swpaul * Link partner is not capable of autonegotiation. 41650120Swpaul * We will never be in full-duplex mode if this is 41750120Swpaul * the case, so reading the PAR is OK. 41850120Swpaul */ 41950120Swpaul par = PHY_READ(sc, MII_NSPHY_PAR); 42050120Swpaul if (par & PAR_10) 42150120Swpaul mii->mii_media_active |= IFM_10_T; 42250120Swpaul else 42350120Swpaul mii->mii_media_active |= IFM_100_TX; 42450120Swpaul#if 0 42550120Swpaul if (par & PAR_FDX) 42650120Swpaul mii->mii_media_active |= IFM_FDX; 42750120Swpaul#endif 42850120Swpaul } else 42950120Swpaul mii->mii_media_active = mii_media_from_bmcr(bmcr); 43050120Swpaul} 431