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gphyter.c revision 1.30.18.1
      1  1.30.18.1  christos /*	$NetBSD: gphyter.c,v 1.30.18.1 2019/06/10 22:07:13 christos Exp $	*/
      2        1.1   thorpej 
      3        1.1   thorpej /*-
      4        1.1   thorpej  * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
      5        1.1   thorpej  * All rights reserved.
      6        1.1   thorpej  *
      7        1.1   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8        1.1   thorpej  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9        1.1   thorpej  * NASA Ames Research Center.
     10        1.1   thorpej  *
     11        1.1   thorpej  * Redistribution and use in source and binary forms, with or without
     12        1.1   thorpej  * modification, are permitted provided that the following conditions
     13        1.1   thorpej  * are met:
     14        1.1   thorpej  * 1. Redistributions of source code must retain the above copyright
     15        1.1   thorpej  *    notice, this list of conditions and the following disclaimer.
     16        1.1   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     17        1.1   thorpej  *    notice, this list of conditions and the following disclaimer in the
     18        1.1   thorpej  *    documentation and/or other materials provided with the distribution.
     19        1.1   thorpej  *
     20        1.1   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21        1.1   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22        1.1   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23        1.1   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24        1.1   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25        1.1   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26        1.1   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27        1.1   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28        1.1   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29        1.1   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30        1.1   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     31        1.1   thorpej  */
     32        1.1   thorpej 
     33        1.1   thorpej /*
     34        1.1   thorpej  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
     35        1.1   thorpej  *
     36        1.1   thorpej  * Redistribution and use in source and binary forms, with or without
     37        1.1   thorpej  * modification, are permitted provided that the following conditions
     38        1.1   thorpej  * are met:
     39        1.1   thorpej  * 1. Redistributions of source code must retain the above copyright
     40        1.1   thorpej  *    notice, this list of conditions and the following disclaimer.
     41        1.1   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     42        1.1   thorpej  *    notice, this list of conditions and the following disclaimer in the
     43        1.1   thorpej  *    documentation and/or other materials provided with the distribution.
     44        1.1   thorpej  *
     45        1.1   thorpej  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     46        1.1   thorpej  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     47        1.1   thorpej  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     48        1.1   thorpej  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     49        1.1   thorpej  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     50        1.1   thorpej  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     51        1.1   thorpej  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     52        1.1   thorpej  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     53        1.1   thorpej  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     54        1.1   thorpej  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     55        1.1   thorpej  */
     56        1.1   thorpej 
     57        1.1   thorpej /*
     58       1.28       jdc  * driver for National Semiconductor's DP83891, DP83861 and DP83865
     59       1.28       jdc  * `Gig PHYTER' ethernet 10/100/1000 PHYs.  The DP83891 is an older,
     60       1.28       jdc  * non-firmware-driven version of the DP83861.  The DP83865 is a low
     61       1.28       jdc  * power version of the DP83861.
     62        1.1   thorpej  *
     63       1.28       jdc  * Data Sheets available from www.national.com:
     64       1.28       jdc  *   http://www.national.com/ds/DP/DP83861.pdf
     65       1.28       jdc  *   http://www.national.com/ds/DP/DP83865.pdf
     66        1.1   thorpej  */
     67        1.6     lukem 
     68        1.6     lukem #include <sys/cdefs.h>
     69  1.30.18.1  christos __KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.30.18.1 2019/06/10 22:07:13 christos Exp $");
     70        1.1   thorpej 
     71        1.1   thorpej #include <sys/param.h>
     72        1.1   thorpej #include <sys/systm.h>
     73        1.1   thorpej #include <sys/kernel.h>
     74        1.1   thorpej #include <sys/device.h>
     75        1.1   thorpej #include <sys/socket.h>
     76        1.1   thorpej #include <sys/errno.h>
     77        1.1   thorpej 
     78        1.1   thorpej #include <net/if.h>
     79        1.1   thorpej #include <net/if_media.h>
     80        1.1   thorpej 
     81        1.1   thorpej #include <dev/mii/mii.h>
     82        1.1   thorpej #include <dev/mii/miivar.h>
     83        1.1   thorpej #include <dev/mii/miidevs.h>
     84        1.1   thorpej 
     85        1.1   thorpej #include <dev/mii/gphyterreg.h>
     86        1.1   thorpej 
     87       1.24   xtraeme static int	gphytermatch(device_t, cfdata_t, void *);
     88       1.24   xtraeme static void	gphyterattach(device_t, device_t, void *);
     89        1.1   thorpej 
     90       1.24   xtraeme CFATTACH_DECL_NEW(gphyter, sizeof(struct mii_softc),
     91       1.11   thorpej     gphytermatch, gphyterattach, mii_phy_detach, mii_phy_activate);
     92        1.1   thorpej 
     93       1.15   thorpej static int	gphyter_service(struct mii_softc *, struct mii_data *, int);
     94       1.15   thorpej static void	gphyter_status(struct mii_softc *);
     95       1.21   msaitoh static void	gphyter_reset(struct mii_softc *);
     96        1.1   thorpej 
     97       1.15   thorpej static const struct mii_phy_funcs gphyter_funcs = {
     98       1.21   msaitoh 	gphyter_service, gphyter_status, gphyter_reset,
     99        1.1   thorpej };
    100        1.1   thorpej 
    101       1.15   thorpej static const struct mii_phydesc gphyters[] = {
    102  1.30.18.1  christos 	MII_PHY_DESC(xxNATSEMI, DP83861),
    103  1.30.18.1  christos 	MII_PHY_DESC(xxNATSEMI, DP83865),
    104  1.30.18.1  christos 	MII_PHY_DESC(xxNATSEMI, DP83891),
    105  1.30.18.1  christos 	MII_PHY_END,
    106        1.3   thorpej };
    107        1.3   thorpej 
    108       1.15   thorpej static int
    109       1.24   xtraeme gphytermatch(device_t parent, cfdata_t match, void *aux)
    110        1.1   thorpej {
    111        1.1   thorpej 	struct mii_attach_args *ma = aux;
    112        1.1   thorpej 
    113        1.3   thorpej 	if (mii_phy_match(ma, gphyters) != NULL)
    114  1.30.18.1  christos 		return 10;
    115        1.1   thorpej 
    116  1.30.18.1  christos 	return 0;
    117        1.1   thorpej }
    118        1.1   thorpej 
    119       1.15   thorpej static void
    120       1.24   xtraeme gphyterattach(device_t parent, device_t self, void *aux)
    121        1.1   thorpej {
    122       1.25   tsutsui 	struct mii_softc *sc = device_private(self);
    123        1.1   thorpej 	struct mii_attach_args *ma = aux;
    124        1.1   thorpej 	struct mii_data *mii = ma->mii_data;
    125        1.3   thorpej 	const struct mii_phydesc *mpd;
    126  1.30.18.1  christos 	uint16_t anar, strap;
    127        1.1   thorpej 
    128        1.3   thorpej 	mpd = mii_phy_match(ma, gphyters);
    129       1.12   thorpej 	aprint_naive(": Media interface\n");
    130       1.12   thorpej 	aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
    131        1.1   thorpej 
    132       1.24   xtraeme 	sc->mii_dev = self;
    133        1.1   thorpej 	sc->mii_inst = mii->mii_instance;
    134        1.1   thorpej 	sc->mii_phy = ma->mii_phyno;
    135        1.1   thorpej 	sc->mii_funcs = &gphyter_funcs;
    136        1.1   thorpej 	sc->mii_pdata = mii;
    137        1.7   thorpej 	sc->mii_flags = ma->mii_flags;
    138       1.19  christos 	sc->mii_anegticks = MII_ANEGTICKS;
    139        1.1   thorpej 
    140        1.1   thorpej 	PHY_RESET(sc);
    141        1.1   thorpej 
    142  1.30.18.1  christos 	PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
    143  1.30.18.1  christos 	sc->mii_capabilities &= ma->mii_capmask;
    144        1.1   thorpej 	if (sc->mii_capabilities & BMSR_EXTSTAT)
    145  1.30.18.1  christos 		PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities);
    146        1.2   thorpej 
    147        1.2   thorpej 	/*
    148  1.30.18.1  christos 	 * The Gig PHYTER seems to have the 10baseT BMSR bits hard-wired to 0,
    149  1.30.18.1  christos 	 * even though the device supports 10baseT. What we do instead is read
    150  1.30.18.1  christos 	 * the post-reset ANAR, who's 10baseT-related bits are set by strapping
    151        1.2   thorpej 	 * pin 180, and fake the BMSR bits.
    152        1.2   thorpej 	 */
    153  1.30.18.1  christos 	PHY_READ(sc, MII_ANAR, &anar);
    154        1.2   thorpej 	if (anar & ANAR_10)
    155        1.2   thorpej 		sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask);
    156        1.2   thorpej 	if (anar & ANAR_10_FD)
    157        1.2   thorpej 		sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask);
    158        1.2   thorpej 
    159       1.24   xtraeme 	aprint_normal_dev(self, "");
    160        1.1   thorpej 	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
    161        1.1   thorpej 	    (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
    162       1.12   thorpej 		aprint_error("no media present");
    163        1.1   thorpej 	else
    164        1.1   thorpej 		mii_phy_add_media(sc);
    165       1.12   thorpej 	aprint_normal("\n");
    166        1.1   thorpej 
    167  1.30.18.1  christos 	PHY_READ(sc, MII_GPHYTER_STRAP, &strap);
    168       1.24   xtraeme 	aprint_normal_dev(self, "strapped to %s mode",
    169        1.1   thorpej 	    (strap & STRAP_MS_VAL) ? "master" : "slave");
    170        1.1   thorpej 	if (strap & STRAP_NC_MODE)
    171       1.12   thorpej 		aprint_normal(", pre-C5 BCM5400 compat enabled");
    172       1.12   thorpej 	aprint_normal("\n");
    173        1.1   thorpej }
    174        1.1   thorpej 
    175       1.15   thorpej static int
    176        1.5   thorpej gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
    177        1.1   thorpej {
    178        1.1   thorpej 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
    179  1.30.18.1  christos 	uint16_t reg;
    180        1.1   thorpej 
    181        1.1   thorpej 	switch (cmd) {
    182        1.1   thorpej 	case MII_POLLSTAT:
    183  1.30.18.1  christos 		/* If we're not polling our PHY instance, just return. */
    184        1.1   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    185  1.30.18.1  christos 			return 0;
    186        1.1   thorpej 		break;
    187        1.1   thorpej 
    188        1.1   thorpej 	case MII_MEDIACHG:
    189        1.1   thorpej 		/*
    190        1.1   thorpej 		 * If the media indicates a different PHY instance,
    191        1.1   thorpej 		 * isolate ourselves.
    192        1.1   thorpej 		 */
    193        1.1   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
    194  1.30.18.1  christos 			PHY_READ(sc, MII_BMCR, &reg);
    195        1.1   thorpej 			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
    196  1.30.18.1  christos 			return 0;
    197        1.1   thorpej 		}
    198        1.1   thorpej 
    199  1.30.18.1  christos 		/* If the interface is not up, don't do anything. */
    200        1.1   thorpej 		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
    201        1.1   thorpej 			break;
    202        1.1   thorpej 
    203        1.1   thorpej 		mii_phy_setmedia(sc);
    204        1.1   thorpej 		break;
    205        1.1   thorpej 
    206        1.1   thorpej 	case MII_TICK:
    207  1.30.18.1  christos 		/* If we're not currently selected, just return. */
    208        1.1   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    209  1.30.18.1  christos 			return 0;
    210        1.1   thorpej 
    211        1.1   thorpej 		if (mii_phy_tick(sc) == EJUSTRETURN)
    212  1.30.18.1  christos 			return 0;
    213        1.1   thorpej 		break;
    214        1.1   thorpej 
    215        1.1   thorpej 	case MII_DOWN:
    216        1.1   thorpej 		mii_phy_down(sc);
    217  1.30.18.1  christos 		return 0;
    218        1.1   thorpej 	}
    219        1.1   thorpej 
    220        1.1   thorpej 	/* Update the media status. */
    221        1.1   thorpej 	mii_phy_status(sc);
    222        1.1   thorpej 
    223        1.1   thorpej 	/* Callback if something changed. */
    224        1.1   thorpej 	mii_phy_update(sc, cmd);
    225  1.30.18.1  christos 	return 0;
    226        1.1   thorpej }
    227        1.1   thorpej 
    228       1.15   thorpej static void
    229        1.5   thorpej gphyter_status(struct mii_softc *sc)
    230        1.1   thorpej {
    231        1.1   thorpej 	struct mii_data *mii = sc->mii_pdata;
    232        1.1   thorpej 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
    233  1.30.18.1  christos 	uint16_t bmsr, bmcr, physup, gtsr;
    234        1.1   thorpej 
    235        1.1   thorpej 	mii->mii_media_status = IFM_AVALID;
    236        1.1   thorpej 	mii->mii_media_active = IFM_ETHER;
    237        1.1   thorpej 
    238  1.30.18.1  christos 	PHY_READ(sc, MII_BMSR, &bmsr);
    239  1.30.18.1  christos 	PHY_READ(sc, MII_BMSR, &bmsr);
    240        1.1   thorpej 
    241  1.30.18.1  christos 	PHY_READ(sc, MII_GPHYTER_PHY_SUP, &physup);
    242        1.1   thorpej 
    243        1.1   thorpej 	if (physup & PHY_SUP_LINK)
    244        1.1   thorpej 		mii->mii_media_status |= IFM_ACTIVE;
    245        1.1   thorpej 
    246  1.30.18.1  christos 	PHY_READ(sc, MII_BMCR, &bmcr);
    247        1.1   thorpej 	if (bmcr & BMCR_ISO) {
    248        1.1   thorpej 		mii->mii_media_active |= IFM_NONE;
    249        1.1   thorpej 		mii->mii_media_status = 0;
    250        1.1   thorpej 		return;
    251        1.1   thorpej 	}
    252        1.1   thorpej 
    253        1.1   thorpej 	if (bmcr & BMCR_LOOP)
    254        1.1   thorpej 		mii->mii_media_active |= IFM_LOOP;
    255        1.1   thorpej 
    256        1.1   thorpej 	if (bmcr & BMCR_AUTOEN) {
    257        1.1   thorpej 		/*
    258        1.1   thorpej 		 * The media status bits are only valid of autonegotiation
    259        1.1   thorpej 		 * has completed (or it's disabled).
    260        1.1   thorpej 		 */
    261        1.1   thorpej 		if ((bmsr & BMSR_ACOMP) == 0) {
    262        1.1   thorpej 			/* Erg, still trying, I guess... */
    263        1.1   thorpej 			mii->mii_media_active |= IFM_NONE;
    264        1.1   thorpej 			return;
    265        1.1   thorpej 		}
    266        1.1   thorpej 
    267        1.1   thorpej 		switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) {
    268        1.1   thorpej 		case PHY_SUP_SPEED1:
    269        1.4     bjh21 			mii->mii_media_active |= IFM_1000_T;
    270  1.30.18.1  christos 			PHY_READ(sc, MII_100T2SR, &gtsr);
    271        1.2   thorpej 			if (gtsr & GTSR_MS_RES)
    272        1.2   thorpej 				mii->mii_media_active |= IFM_ETH_MASTER;
    273        1.1   thorpej 			break;
    274        1.1   thorpej 
    275        1.1   thorpej 		case PHY_SUP_SPEED0:
    276        1.1   thorpej 			mii->mii_media_active |= IFM_100_TX;
    277        1.1   thorpej 			break;
    278        1.1   thorpej 
    279        1.1   thorpej 		case 0:
    280        1.1   thorpej 			mii->mii_media_active |= IFM_10_T;
    281        1.1   thorpej 			break;
    282        1.1   thorpej 
    283        1.1   thorpej 		default:
    284        1.1   thorpej 			mii->mii_media_active |= IFM_NONE;
    285        1.1   thorpej 			mii->mii_media_status = 0;
    286        1.1   thorpej 		}
    287        1.1   thorpej 		if (physup & PHY_SUP_DUPLEX)
    288       1.13   thorpej 			mii->mii_media_active |=
    289       1.14   thorpej 			    IFM_FDX | mii_phy_flowstatus(sc);
    290       1.29   msaitoh 		else
    291       1.29   msaitoh 			mii->mii_media_active |= IFM_HDX;
    292        1.1   thorpej 	} else
    293        1.1   thorpej 		mii->mii_media_active = ife->ifm_media;
    294        1.1   thorpej }
    295       1.21   msaitoh 
    296       1.21   msaitoh void
    297       1.21   msaitoh gphyter_reset(struct mii_softc *sc)
    298       1.21   msaitoh {
    299  1.30.18.1  christos 	int i;
    300  1.30.18.1  christos 	uint16_t reg;
    301       1.21   msaitoh 
    302       1.21   msaitoh 	if (sc->mii_flags & MIIF_NOISOLATE)
    303       1.21   msaitoh 		reg = BMCR_RESET;
    304       1.21   msaitoh 	else
    305       1.21   msaitoh 		reg = BMCR_RESET | BMCR_ISO;
    306       1.21   msaitoh 	PHY_WRITE(sc, MII_BMCR, reg);
    307       1.21   msaitoh 
    308       1.21   msaitoh 	/*
    309  1.30.18.1  christos 	 * It is best to allow a little time for the reset to settle in before
    310  1.30.18.1  christos 	 * we start polling the BMCR again.  Notably, the DP83840A manual
    311  1.30.18.1  christos 	 * states that there should be a 500us delay between asserting software
    312  1.30.18.1  christos 	 * reset and attempting MII serial operations. Also, a DP83815 can get
    313  1.30.18.1  christos 	 * into a bad state on cable removal and reinsertion if we do not
    314  1.30.18.1  christos 	 * delay here.
    315       1.21   msaitoh 	 */
    316       1.21   msaitoh 	delay(500);
    317       1.21   msaitoh 
    318       1.21   msaitoh 	/* Wait another 100ms for it to complete. */
    319       1.21   msaitoh 	for (i = 0; i < 100; i++) {
    320  1.30.18.1  christos 		PHY_READ(sc, MII_BMCR, &reg);
    321       1.21   msaitoh 		if ((reg & BMCR_RESET) == 0)
    322       1.21   msaitoh 			break;
    323       1.21   msaitoh 		delay(1000);
    324       1.21   msaitoh 	}
    325       1.21   msaitoh 
    326       1.21   msaitoh 	if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0))
    327       1.21   msaitoh 		PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
    328       1.21   msaitoh }
    329