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sqphy.c revision 1.51
      1  1.51   msaitoh /*	$NetBSD: sqphy.c,v 1.51 2016/07/07 06:55:41 msaitoh Exp $	*/
      2   1.1   thorpej 
      3   1.1   thorpej /*-
      4  1.23   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  1.36     perry 
     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  1.23   thorpej  * driver for Seeq 80220/80221, 80223, and 80225 10/100 ethernet PHYs
     59   1.1   thorpej  * datasheet from www.seeq.com
     60   1.1   thorpej  */
     61  1.25     lukem 
     62  1.25     lukem #include <sys/cdefs.h>
     63  1.51   msaitoh __KERNEL_RCSID(0, "$NetBSD: sqphy.c,v 1.51 2016/07/07 06:55:41 msaitoh Exp $");
     64   1.1   thorpej 
     65   1.1   thorpej #include <sys/param.h>
     66   1.1   thorpej #include <sys/systm.h>
     67   1.1   thorpej #include <sys/kernel.h>
     68   1.1   thorpej #include <sys/device.h>
     69   1.1   thorpej #include <sys/socket.h>
     70   1.9   thorpej #include <sys/errno.h>
     71   1.1   thorpej 
     72   1.1   thorpej #include <net/if.h>
     73   1.1   thorpej #include <net/if_media.h>
     74   1.1   thorpej 
     75   1.1   thorpej #include <dev/mii/mii.h>
     76   1.1   thorpej #include <dev/mii/miivar.h>
     77   1.1   thorpej #include <dev/mii/miidevs.h>
     78   1.1   thorpej 
     79   1.1   thorpej #include <dev/mii/sqphyreg.h>
     80   1.1   thorpej 
     81  1.47   xtraeme static int	sqphymatch(device_t, cfdata_t, void *);
     82  1.47   xtraeme static void	sqphyattach(device_t, device_t, void *);
     83   1.1   thorpej 
     84  1.47   xtraeme CFATTACH_DECL_NEW(sqphy, sizeof(struct mii_softc),
     85  1.33   thorpej     sqphymatch, sqphyattach, mii_phy_detach, mii_phy_activate);
     86   1.1   thorpej 
     87  1.35   thorpej static int	sqphy_service(struct mii_softc *, struct mii_data *, int);
     88  1.35   thorpej static void	sqphy_status(struct mii_softc *);
     89  1.35   thorpej static void	sqphy_84220_reset(struct mii_softc *);
     90   1.1   thorpej 
     91  1.35   thorpej static const struct mii_phy_funcs sqphy_funcs = {
     92  1.19   thorpej 	sqphy_service, sqphy_status, mii_phy_reset,
     93  1.19   thorpej };
     94  1.19   thorpej 
     95  1.35   thorpej static const struct mii_phy_funcs sqphy_84220_funcs = {
     96  1.28       scw 	sqphy_service, sqphy_status, sqphy_84220_reset,
     97  1.28       scw };
     98  1.28       scw 
     99  1.35   thorpej static const struct mii_phydesc sqphys[] = {
    100  1.22   thorpej 	{ MII_OUI_SEEQ,			MII_MODEL_SEEQ_80220,
    101  1.22   thorpej 	  MII_STR_SEEQ_80220 },
    102  1.22   thorpej 
    103  1.23   thorpej 	{ MII_OUI_SEEQ,			MII_MODEL_SEEQ_80225,
    104  1.23   thorpej 	  MII_STR_SEEQ_80225 },
    105  1.23   thorpej 
    106  1.28       scw 	{ MII_OUI_SEEQ,			MII_MODEL_SEEQ_84220,
    107  1.28       scw 	  MII_STR_SEEQ_84220 },
    108  1.28       scw 
    109  1.22   thorpej 	{ 0,				0,
    110  1.22   thorpej 	  NULL },
    111  1.22   thorpej };
    112  1.22   thorpej 
    113  1.35   thorpej static int
    114  1.47   xtraeme sqphymatch(device_t parent, cfdata_t match, void *aux)
    115   1.1   thorpej {
    116   1.1   thorpej 	struct mii_attach_args *ma = aux;
    117   1.1   thorpej 
    118  1.22   thorpej 	if (mii_phy_match(ma, sqphys) != NULL)
    119   1.5   thorpej 		return (10);
    120   1.1   thorpej 
    121   1.1   thorpej 	return (0);
    122   1.1   thorpej }
    123   1.1   thorpej 
    124  1.35   thorpej static void
    125  1.47   xtraeme sqphyattach(device_t parent, device_t self, void *aux)
    126   1.1   thorpej {
    127  1.39   thorpej 	struct mii_softc *sc = device_private(self);
    128   1.1   thorpej 	struct mii_attach_args *ma = aux;
    129   1.1   thorpej 	struct mii_data *mii = ma->mii_data;
    130  1.22   thorpej 	const struct mii_phydesc *mpd;
    131   1.1   thorpej 
    132  1.22   thorpej 	mpd = mii_phy_match(ma, sqphys);
    133  1.34   thorpej 	aprint_naive(": Media interface\n");
    134  1.34   thorpej 	aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
    135   1.1   thorpej 
    136  1.47   xtraeme 	sc->mii_dev = self;
    137   1.6   thorpej 	sc->mii_inst = mii->mii_instance;
    138   1.6   thorpej 	sc->mii_phy = ma->mii_phyno;
    139   1.6   thorpej 	sc->mii_pdata = mii;
    140  1.26   thorpej 	sc->mii_flags = ma->mii_flags;
    141  1.42  christos 	sc->mii_anegticks = MII_ANEGTICKS;
    142   1.1   thorpej 
    143  1.28       scw 	switch (MII_MODEL(ma->mii_id2)) {
    144  1.28       scw 	case MII_MODEL_SEEQ_84220:
    145  1.28       scw 		sc->mii_funcs = &sqphy_84220_funcs;
    146  1.51   msaitoh 		aprint_normal_dev(self,
    147  1.51   msaitoh 		    "using Seeq 84220 isolate/reset hack\n");
    148  1.28       scw 		break;
    149  1.28       scw 
    150  1.28       scw 	default:
    151  1.28       scw 		sc->mii_funcs = &sqphy_funcs;
    152  1.28       scw 	}
    153  1.28       scw 
    154  1.19   thorpej 	PHY_RESET(sc);
    155   1.1   thorpej 
    156  1.51   msaitoh 	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
    157  1.47   xtraeme 	aprint_normal_dev(self, "");
    158   1.6   thorpej 	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
    159  1.34   thorpej 		aprint_error("no media present");
    160   1.1   thorpej 	else
    161  1.14   thorpej 		mii_phy_add_media(sc);
    162  1.34   thorpej 	aprint_normal("\n");
    163   1.1   thorpej }
    164   1.1   thorpej 
    165  1.35   thorpej static int
    166  1.24   thorpej sqphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
    167   1.1   thorpej {
    168   1.1   thorpej 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
    169   1.1   thorpej 	int reg;
    170  1.13   thorpej 
    171   1.1   thorpej 	switch (cmd) {
    172   1.1   thorpej 	case MII_POLLSTAT:
    173   1.1   thorpej 		/*
    174   1.1   thorpej 		 * If we're not polling our PHY instance, just return.
    175   1.1   thorpej 		 */
    176   1.6   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    177   1.1   thorpej 			return (0);
    178   1.1   thorpej 		break;
    179   1.1   thorpej 
    180   1.1   thorpej 	case MII_MEDIACHG:
    181   1.1   thorpej 		/*
    182   1.1   thorpej 		 * If the media indicates a different PHY instance,
    183   1.1   thorpej 		 * isolate ourselves.
    184   1.1   thorpej 		 */
    185   1.6   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
    186   1.6   thorpej 			reg = PHY_READ(sc, MII_BMCR);
    187   1.6   thorpej 			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
    188   1.1   thorpej 			return (0);
    189   1.1   thorpej 		}
    190   1.1   thorpej 
    191   1.1   thorpej 		/*
    192   1.1   thorpej 		 * If the interface is not up, don't do anything.
    193   1.1   thorpej 		 */
    194   1.1   thorpej 		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
    195   1.1   thorpej 			break;
    196   1.1   thorpej 
    197  1.17   thorpej 		mii_phy_setmedia(sc);
    198   1.1   thorpej 		break;
    199   1.1   thorpej 
    200   1.1   thorpej 	case MII_TICK:
    201   1.1   thorpej 		/*
    202   1.1   thorpej 		 * If we're not currently selected, just return.
    203   1.1   thorpej 		 */
    204   1.6   thorpej 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    205   1.1   thorpej 			return (0);
    206   1.1   thorpej 
    207  1.18   thorpej 		if (mii_phy_tick(sc) == EJUSTRETURN)
    208   1.9   thorpej 			return (0);
    209   1.1   thorpej 		break;
    210  1.12   thorpej 
    211  1.12   thorpej 	case MII_DOWN:
    212  1.12   thorpej 		mii_phy_down(sc);
    213  1.12   thorpej 		return (0);
    214   1.1   thorpej 	}
    215   1.1   thorpej 
    216   1.1   thorpej 	/* Update the media status. */
    217  1.16   thorpej 	mii_phy_status(sc);
    218   1.1   thorpej 
    219   1.1   thorpej 	/* Callback if something changed. */
    220  1.18   thorpej 	mii_phy_update(sc, cmd);
    221   1.1   thorpej 	return (0);
    222   1.1   thorpej }
    223   1.1   thorpej 
    224  1.35   thorpej static void
    225  1.24   thorpej sqphy_status(struct mii_softc *sc)
    226   1.1   thorpej {
    227   1.6   thorpej 	struct mii_data *mii = sc->mii_pdata;
    228  1.11   thorpej 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
    229   1.1   thorpej 	int bmsr, bmcr, status;
    230   1.1   thorpej 
    231   1.1   thorpej 	mii->mii_media_status = IFM_AVALID;
    232   1.1   thorpej 	mii->mii_media_active = IFM_ETHER;
    233   1.1   thorpej 
    234   1.6   thorpej 	bmsr = PHY_READ(sc, MII_BMSR) |
    235   1.6   thorpej 	    PHY_READ(sc, MII_BMSR);
    236   1.1   thorpej 	if (bmsr & BMSR_LINK)
    237   1.1   thorpej 		mii->mii_media_status |= IFM_ACTIVE;
    238   1.1   thorpej 
    239   1.6   thorpej 	bmcr = PHY_READ(sc, MII_BMCR);
    240   1.1   thorpej 	if (bmcr & BMCR_ISO) {
    241   1.1   thorpej 		mii->mii_media_active |= IFM_NONE;
    242   1.1   thorpej 		mii->mii_media_status = 0;
    243   1.1   thorpej 		return;
    244   1.1   thorpej 	}
    245   1.1   thorpej 
    246   1.1   thorpej 	if (bmcr & BMCR_LOOP)
    247   1.1   thorpej 		mii->mii_media_active |= IFM_LOOP;
    248   1.1   thorpej 
    249   1.7   thorpej 	if (bmcr & BMCR_AUTOEN) {
    250   1.7   thorpej 		if ((bmsr & BMSR_ACOMP) == 0) {
    251   1.7   thorpej 			/* Erg, still trying, I guess... */
    252   1.7   thorpej 			mii->mii_media_active |= IFM_NONE;
    253   1.7   thorpej 			return;
    254   1.7   thorpej 		}
    255  1.23   thorpej 		/*
    256  1.23   thorpej 		 * Note: don't get fancy here -- the 80225 only
    257  1.23   thorpej 		 * supports the SPD_DET and DPLX_DET bits in
    258  1.23   thorpej 		 * the STATUS register.
    259  1.23   thorpej 		 */
    260   1.7   thorpej 		status = PHY_READ(sc, MII_SQPHY_STATUS);
    261   1.7   thorpej 		if (status & STATUS_SPD_DET)
    262   1.7   thorpej 			mii->mii_media_active |= IFM_100_TX;
    263   1.7   thorpej 		else
    264   1.7   thorpej 			mii->mii_media_active |= IFM_10_T;
    265   1.7   thorpej 		if (status & STATUS_DPLX_DET)
    266   1.7   thorpej 			mii->mii_media_active |= IFM_FDX;
    267  1.50   msaitoh 		else
    268  1.50   msaitoh 			mii->mii_media_active |= IFM_HDX;
    269   1.8   thorpej 	} else
    270  1.11   thorpej 		mii->mii_media_active = ife->ifm_media;
    271  1.28       scw }
    272  1.28       scw 
    273  1.35   thorpej static void
    274  1.28       scw sqphy_84220_reset(struct mii_softc *sc)
    275  1.28       scw {
    276  1.28       scw 	int reg;
    277  1.28       scw 
    278  1.28       scw 	mii_phy_reset(sc);
    279  1.28       scw 
    280  1.28       scw 	/*
    281  1.28       scw 	 * This PHY sometimes insists on coming out of reset isolated,
    282  1.28       scw 	 * even when the MDA[0-3] pins are pulled high (to indicate
    283  1.28       scw 	 * PHY address 0), contrary to the device's datasheet.
    284  1.28       scw 	 *
    285  1.28       scw 	 * Morever, simply clearing BMCR_ISO here isn't enough; the
    286  1.28       scw 	 * change won't stick until about 30mS *after* the PHY has
    287  1.28       scw 	 * been reset.
    288  1.28       scw 	 *
    289  1.28       scw 	 * This sucks.
    290  1.28       scw 	 */
    291  1.30       scw 	while ((sc->mii_inst == 0 || (sc->mii_flags & MIIF_NOISOLATE)) &&
    292  1.28       scw 	    ((reg = PHY_READ(sc, MII_BMCR)) & BMCR_ISO) != 0) {
    293  1.28       scw 
    294  1.30       scw 		delay(35000);
    295  1.28       scw 		PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
    296  1.30       scw 		delay(35000);
    297  1.28       scw 	}
    298   1.1   thorpej }
    299