nsphy.c revision 150763
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 40139749Simp/*- 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 69129844Smarius#include <sys/cdefs.h> 70129844Smarius__FBSDID("$FreeBSD: head/sys/dev/mii/nsphy.c 150763 2005-09-30 19:39:27Z imp $"); 71129844Smarius 7250120Swpaul/* 7350120Swpaul * driver for National Semiconductor's DP83840A ethernet 10/100 PHY 7450120Swpaul * Data Sheet available from www.national.com 7550120Swpaul */ 7650120Swpaul 7750120Swpaul#include <sys/param.h> 7850120Swpaul#include <sys/systm.h> 7950120Swpaul#include <sys/kernel.h> 8050120Swpaul#include <sys/socket.h> 8150120Swpaul#include <sys/errno.h> 8250120Swpaul#include <sys/module.h> 8350120Swpaul#include <sys/bus.h> 8450120Swpaul 8550120Swpaul#include <net/if.h> 8650120Swpaul#include <net/if_media.h> 8750120Swpaul 8850120Swpaul#include <dev/mii/mii.h> 8950120Swpaul#include <dev/mii/miivar.h> 90109514Sobrien#include "miidevs.h" 9150120Swpaul 9250120Swpaul#include <dev/mii/nsphyreg.h> 9350120Swpaul 9450120Swpaul#include "miibus_if.h" 9550120Swpaul 96105135Salfredstatic int nsphy_probe(device_t); 97105135Salfredstatic int nsphy_attach(device_t); 9850120Swpaul 9950120Swpaulstatic device_method_t nsphy_methods[] = { 10050120Swpaul /* device interface */ 10150120Swpaul DEVMETHOD(device_probe, nsphy_probe), 10250120Swpaul DEVMETHOD(device_attach, nsphy_attach), 10395722Sphk DEVMETHOD(device_detach, mii_phy_detach), 10450120Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 10550120Swpaul { 0, 0 } 10650120Swpaul}; 10750120Swpaul 10850120Swpaulstatic devclass_t nsphy_devclass; 10950120Swpaul 11050120Swpaulstatic driver_t nsphy_driver = { 11150120Swpaul "nsphy", 11250120Swpaul nsphy_methods, 11350120Swpaul sizeof(struct mii_softc) 11450120Swpaul}; 11550120Swpaul 11650120SwpaulDRIVER_MODULE(nsphy, miibus, nsphy_driver, nsphy_devclass, 0, 0); 11750120Swpaul 11892739Salfredstatic int nsphy_service(struct mii_softc *, struct mii_data *, int); 11992739Salfredstatic void nsphy_status(struct mii_softc *); 12050120Swpaul 121105135Salfredstatic int 122150763Simpnsphy_probe(device_t dev) 12350120Swpaul{ 12450120Swpaul struct mii_attach_args *ma; 12550120Swpaul 12650120Swpaul ma = device_get_ivars(dev); 12750120Swpaul 12859153Ssemenu if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_NATSEMI && 12959153Ssemenu MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83840) { 13059153Ssemenu device_set_desc(dev, MII_STR_NATSEMI_DP83840); 13159153Ssemenu } else 13250120Swpaul return (ENXIO); 13350120Swpaul 13450120Swpaul return (0); 13550120Swpaul} 13650120Swpaul 137105135Salfredstatic int 138150763Simpnsphy_attach(device_t dev) 13950120Swpaul{ 14050120Swpaul struct mii_softc *sc; 14150120Swpaul struct mii_attach_args *ma; 14250120Swpaul struct mii_data *mii; 14350120Swpaul 14450120Swpaul sc = device_get_softc(dev); 14550120Swpaul ma = device_get_ivars(dev); 14650120Swpaul sc->mii_dev = device_get_parent(dev); 14750120Swpaul mii = device_get_softc(sc->mii_dev); 14850120Swpaul LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); 14950120Swpaul 15050120Swpaul sc->mii_inst = mii->mii_instance; 15150120Swpaul sc->mii_phy = ma->mii_phyno; 15250120Swpaul sc->mii_service = nsphy_service; 15350120Swpaul sc->mii_pdata = mii; 15450120Swpaul 15550120Swpaul#ifdef foo 15650120Swpaul /* 15750120Swpaul * i82557 wedges if all of its PHYs are isolated! 15850120Swpaul */ 15950120Swpaul if (strcmp(device_get_name(device_get_parent(sc->mii_dev)), 16050120Swpaul "fxp") == 0 && mii->mii_instance == 0) 16150120Swpaul#endif 16250120Swpaul 16350120Swpaul sc->mii_flags |= MIIF_NOISOLATE; 16450120Swpaul mii->mii_instance++; 16550120Swpaul 16650120Swpaul#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL) 16750120Swpaul 16850120Swpaul#if 0 16950120Swpaul /* Can't do this on the i82557! */ 17050120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst), 17150120Swpaul BMCR_ISO); 17250120Swpaul#endif 17350120Swpaul ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst), 17450120Swpaul BMCR_LOOP|BMCR_S100); 17550120Swpaul 17650120Swpaul mii_phy_reset(sc); 17750120Swpaul 17850120Swpaul sc->mii_capabilities = 17950120Swpaul PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 18050120Swpaul device_printf(dev, " "); 18195667Sphk mii_add_media(sc); 18250120Swpaul printf("\n"); 18350120Swpaul#undef ADD 18450120Swpaul 18550120Swpaul MIIBUS_MEDIAINIT(sc->mii_dev); 18650120Swpaul return(0); 18750120Swpaul} 18850120Swpaul 18984145Sjlemonstatic int 190150763Simpnsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 19150120Swpaul{ 19250120Swpaul struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 19350120Swpaul int reg; 194129846Smarius device_t parent; 19550120Swpaul 19650120Swpaul switch (cmd) { 19750120Swpaul case MII_POLLSTAT: 19850120Swpaul /* 19950120Swpaul * If we're not polling our PHY instance, just return. 20050120Swpaul */ 20150120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 20250120Swpaul return (0); 20350120Swpaul break; 20450120Swpaul 20550120Swpaul case MII_MEDIACHG: 20650120Swpaul /* 20750120Swpaul * If the media indicates a different PHY instance, 20850120Swpaul * isolate ourselves. 20950120Swpaul */ 21050120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 21150120Swpaul reg = PHY_READ(sc, MII_BMCR); 21250120Swpaul PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); 21350120Swpaul return (0); 21450120Swpaul } 21550120Swpaul 21650120Swpaul /* 21750120Swpaul * If the interface is not up, don't do anything. 21850120Swpaul */ 21950120Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 22050120Swpaul break; 22150120Swpaul 222129846Smarius parent = device_get_parent(sc->mii_dev); 223129846Smarius 22450120Swpaul reg = PHY_READ(sc, MII_NSPHY_PCR); 22550120Swpaul 22650120Swpaul /* 22750120Swpaul * Set up the PCR to use LED4 to indicate full-duplex 22850120Swpaul * in both 10baseT and 100baseTX modes. 22950120Swpaul */ 23050120Swpaul reg |= PCR_LED4MODE; 23150120Swpaul 23250120Swpaul /* 233129842Smarius * Make sure Carrier Integrity Monitor function is 23450120Swpaul * disabled (normal for Node operation, but sometimes 23550120Swpaul * it's not set?!) 23650120Swpaul */ 23750120Swpaul reg |= PCR_CIMDIS; 23850120Swpaul 23950120Swpaul /* 24050120Swpaul * Make sure "force link good" is set to normal mode. 24150120Swpaul * It's only intended for debugging. 24250120Swpaul */ 24350120Swpaul reg |= PCR_FLINK100; 24450120Swpaul 24550120Swpaul /* 24650120Swpaul * Mystery bits which are supposedly `reserved', 24750120Swpaul * but we seem to need to set them when the PHY 24874353Sjlemon * is connected to some interfaces: 24974353Sjlemon * 25074353Sjlemon * 0x0400 is needed for fxp 25174353Sjlemon * (Intel EtherExpress Pro 10+/100B, 82557 chip) 25274353Sjlemon * (nsphy with a DP83840 chip) 25374353Sjlemon * 0x0100 may be needed for some other card 25450120Swpaul */ 25550120Swpaul reg |= 0x0100 | 0x0400; 25674353Sjlemon 257129846Smarius if (strcmp(device_get_name(parent), "fxp") == 0) 25877634Sjlemon PHY_WRITE(sc, MII_NSPHY_PCR, reg); 25974353Sjlemon 26050120Swpaul switch (IFM_SUBTYPE(ife->ifm_media)) { 26150120Swpaul case IFM_AUTO: 26250120Swpaul /* 263129846Smarius * If we're already in auto mode and don't hang off 264129846Smarius * of a hme(4), just return. DP83840A on hme(4) don't 265129846Smarius * advertise their media capabilities themselves 266129846Smarius * properly so force writing the ANAR according to 267129846Smarius * the BMSR by mii_phy_auto() every time. 26850120Swpaul */ 269129846Smarius if ((PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN) == 0 && 270129846Smarius strcmp(device_get_name(parent), "hme") != 0) 27150120Swpaul return (0); 27296026Sphk (void) mii_phy_auto(sc); 27350120Swpaul break; 27450120Swpaul case IFM_100_T4: 27550120Swpaul /* 27650120Swpaul * XXX Not supported as a manual setting right now. 27750120Swpaul */ 27850120Swpaul return (EINVAL); 27950120Swpaul default: 28050120Swpaul /* 28150120Swpaul * BMCR data is stored in the ifmedia entry. 28250120Swpaul */ 28350120Swpaul PHY_WRITE(sc, MII_ANAR, 28450120Swpaul mii_anar(ife->ifm_media)); 28550120Swpaul PHY_WRITE(sc, MII_BMCR, ife->ifm_data); 28650120Swpaul } 28750120Swpaul break; 28850120Swpaul 28950120Swpaul case MII_TICK: 29050120Swpaul /* 29150120Swpaul * If we're not currently selected, just return. 29250120Swpaul */ 29350120Swpaul if (IFM_INST(ife->ifm_media) != sc->mii_inst) 29450120Swpaul return (0); 29584145Sjlemon if (mii_phy_tick(sc) == EJUSTRETURN) 29650120Swpaul return (0); 29750120Swpaul break; 29850120Swpaul } 29950120Swpaul 30050120Swpaul /* Update the media status. */ 30150120Swpaul nsphy_status(sc); 30250120Swpaul 30350120Swpaul /* Callback if something changed. */ 30484145Sjlemon mii_phy_update(sc, cmd); 30550120Swpaul return (0); 30650120Swpaul} 30750120Swpaul 30884145Sjlemonstatic void 309150763Simpnsphy_status(struct mii_softc *sc) 31050120Swpaul{ 31150120Swpaul struct mii_data *mii = sc->mii_pdata; 31250120Swpaul int bmsr, bmcr, par, anlpar; 31350120Swpaul 31450120Swpaul mii->mii_media_status = IFM_AVALID; 31550120Swpaul mii->mii_media_active = IFM_ETHER; 31650120Swpaul 31750120Swpaul bmsr = PHY_READ(sc, MII_BMSR) | 31850120Swpaul PHY_READ(sc, MII_BMSR); 31950120Swpaul if (bmsr & BMSR_LINK) 32050120Swpaul mii->mii_media_status |= IFM_ACTIVE; 32150120Swpaul 32250120Swpaul bmcr = PHY_READ(sc, MII_BMCR); 32350120Swpaul if (bmcr & BMCR_ISO) { 32450120Swpaul mii->mii_media_active |= IFM_NONE; 32550120Swpaul mii->mii_media_status = 0; 32650120Swpaul return; 32750120Swpaul } 32850120Swpaul 32950120Swpaul if (bmcr & BMCR_LOOP) 33050120Swpaul mii->mii_media_active |= IFM_LOOP; 33150120Swpaul 33250120Swpaul if (bmcr & BMCR_AUTOEN) { 33350120Swpaul /* 33450120Swpaul * The PAR status bits are only valid of autonegotiation 33550120Swpaul * has completed (or it's disabled). 33650120Swpaul */ 33750120Swpaul if ((bmsr & BMSR_ACOMP) == 0) { 33850120Swpaul /* Erg, still trying, I guess... */ 33950120Swpaul mii->mii_media_active |= IFM_NONE; 34050120Swpaul return; 34150120Swpaul } 34250120Swpaul 34350120Swpaul /* 34450120Swpaul * Argh. The PAR doesn't seem to indicate duplex mode 34550120Swpaul * properly! Determine media based on link partner's 34650120Swpaul * advertised capabilities. 34750120Swpaul */ 34850120Swpaul if (PHY_READ(sc, MII_ANER) & ANER_LPAN) { 34950120Swpaul anlpar = PHY_READ(sc, MII_ANAR) & 35050120Swpaul PHY_READ(sc, MII_ANLPAR); 35150120Swpaul if (anlpar & ANLPAR_T4) 35250120Swpaul mii->mii_media_active |= IFM_100_T4; 35350120Swpaul else if (anlpar & ANLPAR_TX_FD) 35450120Swpaul mii->mii_media_active |= IFM_100_TX|IFM_FDX; 35550120Swpaul else if (anlpar & ANLPAR_TX) 35650120Swpaul mii->mii_media_active |= IFM_100_TX; 35750120Swpaul else if (anlpar & ANLPAR_10_FD) 35850120Swpaul mii->mii_media_active |= IFM_10_T|IFM_FDX; 35950120Swpaul else if (anlpar & ANLPAR_10) 36050120Swpaul mii->mii_media_active |= IFM_10_T; 36150120Swpaul else 36250120Swpaul mii->mii_media_active |= IFM_NONE; 36350120Swpaul return; 36450120Swpaul } 36550120Swpaul 36650120Swpaul /* 36750120Swpaul * Link partner is not capable of autonegotiation. 36850120Swpaul * We will never be in full-duplex mode if this is 36950120Swpaul * the case, so reading the PAR is OK. 37050120Swpaul */ 37150120Swpaul par = PHY_READ(sc, MII_NSPHY_PAR); 37250120Swpaul if (par & PAR_10) 37350120Swpaul mii->mii_media_active |= IFM_10_T; 37450120Swpaul else 37550120Swpaul mii->mii_media_active |= IFM_100_TX; 37650120Swpaul#if 0 37750120Swpaul if (par & PAR_FDX) 37850120Swpaul mii->mii_media_active |= IFM_FDX; 37950120Swpaul#endif 38050120Swpaul } else 38159153Ssemenu mii->mii_media_active |= mii_media_from_bmcr(bmcr); 38250120Swpaul} 383