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mii.c revision 1.18
      1  1.18  thorpej /*	$NetBSD: mii.c,v 1.18 2000/02/02 08:05:33 thorpej Exp $	*/
      2   1.6  thorpej 
      3   1.6  thorpej /*-
      4  1.17  thorpej  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
      5   1.6  thorpej  * All rights reserved.
      6   1.6  thorpej  *
      7   1.6  thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8   1.6  thorpej  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9   1.6  thorpej  * NASA Ames Research Center.
     10   1.1   bouyer  *
     11   1.1   bouyer  * Redistribution and use in source and binary forms, with or without
     12   1.1   bouyer  * modification, are permitted provided that the following conditions
     13   1.1   bouyer  * are met:
     14   1.1   bouyer  * 1. Redistributions of source code must retain the above copyright
     15   1.1   bouyer  *    notice, this list of conditions and the following disclaimer.
     16   1.1   bouyer  * 2. Redistributions in binary form must reproduce the above copyright
     17   1.1   bouyer  *    notice, this list of conditions and the following disclaimer in the
     18   1.1   bouyer  *    documentation and/or other materials provided with the distribution.
     19   1.1   bouyer  * 3. All advertising materials mentioning features or use of this software
     20   1.1   bouyer  *    must display the following acknowledgement:
     21   1.6  thorpej  *	This product includes software developed by the NetBSD
     22   1.6  thorpej  *	Foundation, Inc. and its contributors.
     23   1.6  thorpej  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24   1.6  thorpej  *    contributors may be used to endorse or promote products derived
     25   1.6  thorpej  *    from this software without specific prior written permission.
     26   1.1   bouyer  *
     27   1.6  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28   1.6  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29   1.6  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30   1.6  thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31   1.6  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32   1.6  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33   1.6  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34   1.6  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35   1.6  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36   1.6  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37   1.6  thorpej  * POSSIBILITY OF SUCH DAMAGE.
     38   1.6  thorpej  */
     39   1.6  thorpej 
     40   1.6  thorpej /*
     41   1.6  thorpej  * MII bus layer, glues MII-capable network interface drivers to sharable
     42   1.6  thorpej  * PHY drivers.  This exports an interface compatible with BSD/OS 3.0's,
     43   1.6  thorpej  * plus some NetBSD extensions.
     44   1.1   bouyer  */
     45   1.1   bouyer 
     46   1.1   bouyer #include <sys/param.h>
     47   1.6  thorpej #include <sys/device.h>
     48   1.1   bouyer #include <sys/systm.h>
     49   1.1   bouyer #include <sys/socket.h>
     50   1.1   bouyer 
     51   1.1   bouyer #include <net/if.h>
     52   1.1   bouyer #include <net/if_media.h>
     53   1.1   bouyer 
     54   1.6  thorpej #include <dev/mii/mii.h>
     55   1.6  thorpej #include <dev/mii/miivar.h>
     56   1.1   bouyer 
     57   1.6  thorpej int	mii_print __P((void *, const char *));
     58   1.6  thorpej int	mii_submatch __P((struct device *, struct cfdata *, void *));
     59   1.1   bouyer 
     60   1.6  thorpej /*
     61   1.6  thorpej  * Helper function used by network interface drivers, attaches PHYs
     62   1.6  thorpej  * to the network interface driver parent.
     63   1.6  thorpej  */
     64   1.6  thorpej void
     65  1.18  thorpej mii_attach(parent, mii, capmask, phyloc, offloc)
     66   1.6  thorpej 	struct device *parent;
     67   1.6  thorpej 	struct mii_data *mii;
     68  1.15  thorpej 	int capmask, phyloc, offloc;
     69   1.6  thorpej {
     70   1.6  thorpej 	struct mii_attach_args ma;
     71   1.6  thorpej 	struct mii_softc *child;
     72  1.13  thorpej 	int bmsr, offset = 0;
     73  1.15  thorpej 	int phymin, phymax;
     74   1.1   bouyer 
     75  1.15  thorpej 	if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
     76  1.18  thorpej 		panic("mii_attach: phyloc and offloc specified");
     77   1.1   bouyer 
     78  1.15  thorpej 	if (phyloc == MII_PHY_ANY) {
     79  1.15  thorpej 		phymin = 0;
     80  1.15  thorpej 		phymax = MII_NPHY - 1;
     81  1.15  thorpej 	} else
     82  1.15  thorpej 		phymin = phymax = phyloc;
     83  1.15  thorpej 
     84  1.15  thorpej 	if ((mii->mii_flags & MIIF_INITDONE) == 0) {
     85  1.15  thorpej 		LIST_INIT(&mii->mii_phys);
     86  1.15  thorpej 		mii->mii_flags |= MIIF_INITDONE;
     87  1.15  thorpej 	}
     88  1.15  thorpej 
     89  1.15  thorpej 	for (ma.mii_phyno = phymin; ma.mii_phyno <= phymax; ma.mii_phyno++) {
     90  1.13  thorpej 		/*
     91  1.13  thorpej 		 * Make sure we haven't already configured a PHY at this
     92  1.18  thorpej 		 * address.  This allows mii_attach() to be called
     93  1.13  thorpej 		 * multiple times.
     94  1.13  thorpej 		 */
     95  1.13  thorpej 		for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
     96  1.13  thorpej 		     child = LIST_NEXT(child, mii_list)) {
     97  1.13  thorpej 			if (child->mii_phy == ma.mii_phyno) {
     98  1.13  thorpej 				/*
     99  1.13  thorpej 				 * Yes, there is already something
    100  1.13  thorpej 				 * configured at this address.
    101  1.13  thorpej 				 */
    102  1.14  thorpej 				offset++;
    103  1.13  thorpej 				continue;
    104  1.13  thorpej 			}
    105  1.13  thorpej 		}
    106  1.13  thorpej 
    107   1.6  thorpej 		/*
    108  1.11  thorpej 		 * Check to see if there is a PHY at this address.  Note,
    109  1.11  thorpej 		 * many braindead PHYs report 0/0 in their ID registers,
    110  1.11  thorpej 		 * so we test for media in the BMSR.
    111  1.11  thorpej 		 */
    112  1.11  thorpej 		bmsr = (*mii->mii_readreg)(parent, ma.mii_phyno, MII_BMSR);
    113  1.11  thorpej 		if (bmsr == 0 || bmsr == 0xffff ||
    114  1.11  thorpej 		    (bmsr & BMSR_MEDIAMASK) == 0) {
    115  1.11  thorpej 			/* Assume no PHY at this address. */
    116  1.15  thorpej 			continue;
    117  1.15  thorpej 		}
    118  1.15  thorpej 
    119  1.15  thorpej 		/*
    120  1.15  thorpej 		 * There is a PHY at this address.  If we were given an
    121  1.15  thorpej 		 * `offset' locator, skip this PHY if it doesn't match.
    122  1.15  thorpej 		 */
    123  1.15  thorpej 		if (offloc != MII_OFFSET_ANY && offloc != offset) {
    124  1.15  thorpej 			offset++;
    125  1.11  thorpej 			continue;
    126  1.11  thorpej 		}
    127  1.11  thorpej 
    128  1.11  thorpej 		/*
    129  1.11  thorpej 		 * Extract the IDs.  Braindead PHYs will be handled by
    130  1.11  thorpej 		 * the `ukphy' driver, as we have no ID information to
    131  1.11  thorpej 		 * match on.
    132   1.6  thorpej 		 */
    133   1.6  thorpej 		ma.mii_id1 = (*mii->mii_readreg)(parent, ma.mii_phyno,
    134   1.6  thorpej 		    MII_PHYIDR1);
    135   1.6  thorpej 		ma.mii_id2 = (*mii->mii_readreg)(parent, ma.mii_phyno,
    136   1.6  thorpej 		    MII_PHYIDR2);
    137   1.1   bouyer 
    138   1.6  thorpej 		ma.mii_data = mii;
    139   1.6  thorpej 		ma.mii_capmask = capmask;
    140   1.1   bouyer 
    141   1.6  thorpej 		if ((child = (struct mii_softc *)config_found_sm(parent, &ma,
    142   1.6  thorpej 		    mii_print, mii_submatch)) != NULL) {
    143   1.6  thorpej 			/*
    144   1.6  thorpej 			 * Link it up in the parent's MII data.
    145   1.6  thorpej 			 */
    146   1.6  thorpej 			LIST_INSERT_HEAD(&mii->mii_phys, child, mii_list);
    147  1.13  thorpej 			child->mii_offset = offset;
    148   1.6  thorpej 			mii->mii_instance++;
    149   1.6  thorpej 		}
    150  1.13  thorpej 		offset++;
    151  1.17  thorpej 	}
    152  1.17  thorpej }
    153  1.17  thorpej 
    154  1.17  thorpej void
    155  1.18  thorpej mii_activate(mii, act, phyloc, offloc)
    156  1.17  thorpej 	struct mii_data *mii;
    157  1.17  thorpej 	enum devact act;
    158  1.17  thorpej 	int phyloc, offloc;
    159  1.17  thorpej {
    160  1.17  thorpej 	struct mii_softc *child;
    161  1.17  thorpej 
    162  1.17  thorpej 	if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
    163  1.18  thorpej 		panic("mii_activate: phyloc and offloc specified");
    164  1.17  thorpej 
    165  1.17  thorpej 	if ((mii->mii_flags & MIIF_INITDONE) == 0)
    166  1.17  thorpej 		return;
    167  1.17  thorpej 
    168  1.17  thorpej 	for (child = LIST_FIRST(&mii->mii_phys);
    169  1.17  thorpej 	     child != NULL; child = LIST_NEXT(child, mii_list)) {
    170  1.17  thorpej 		if (phyloc != MII_PHY_ANY || offloc != MII_OFFSET_ANY) {
    171  1.17  thorpej 			if (phyloc != MII_PHY_ANY &&
    172  1.17  thorpej 			    phyloc != child->mii_phy)
    173  1.17  thorpej 				continue;
    174  1.17  thorpej 			if (offloc != MII_OFFSET_ANY &&
    175  1.17  thorpej 			    offloc != child->mii_offset)
    176  1.17  thorpej 				continue;
    177  1.17  thorpej 		}
    178  1.17  thorpej 		switch (act) {
    179  1.17  thorpej 		case DVACT_ACTIVATE:
    180  1.18  thorpej 			panic("mii_activate: DVACT_ACTIVATE");
    181  1.17  thorpej 			break;
    182  1.17  thorpej 
    183  1.17  thorpej 		case DVACT_DEACTIVATE:
    184  1.17  thorpej 			if (config_deactivate(&child->mii_dev) != 0)
    185  1.17  thorpej 				panic("%s: config_activate(%d) failed\n",
    186  1.17  thorpej 				    child->mii_dev.dv_xname, act);
    187  1.17  thorpej 		}
    188  1.17  thorpej 	}
    189  1.17  thorpej }
    190  1.17  thorpej 
    191  1.17  thorpej void
    192  1.18  thorpej mii_detach(mii, phyloc, offloc)
    193  1.17  thorpej 	struct mii_data *mii;
    194  1.17  thorpej 	int phyloc, offloc;
    195  1.17  thorpej {
    196  1.17  thorpej 	struct mii_softc *child, *nchild;
    197  1.17  thorpej 
    198  1.17  thorpej 	if (phyloc != MII_PHY_ANY && offloc != MII_PHY_ANY)
    199  1.18  thorpej 		panic("mii_detach: phyloc and offloc specified");
    200  1.17  thorpej 
    201  1.17  thorpej 	if ((mii->mii_flags & MIIF_INITDONE) == 0)
    202  1.17  thorpej 		return;
    203  1.17  thorpej 
    204  1.17  thorpej 	for (child = LIST_FIRST(&mii->mii_phys);
    205  1.17  thorpej 	     child != NULL; child = nchild) {
    206  1.17  thorpej 		nchild = LIST_NEXT(child, mii_list);
    207  1.17  thorpej 		if (phyloc != MII_PHY_ANY || offloc != MII_OFFSET_ANY) {
    208  1.17  thorpej 			if (phyloc != MII_PHY_ANY &&
    209  1.17  thorpej 			    phyloc != child->mii_phy)
    210  1.17  thorpej 				continue;
    211  1.17  thorpej 			if (offloc != MII_OFFSET_ANY &&
    212  1.17  thorpej 			    offloc != child->mii_offset)
    213  1.17  thorpej 				continue;
    214  1.17  thorpej 		}
    215  1.17  thorpej 		LIST_REMOVE(child, mii_list);
    216  1.17  thorpej 		(void) config_detach(&child->mii_dev, DETACH_FORCE);
    217   1.6  thorpej 	}
    218   1.4   bouyer }
    219   1.1   bouyer 
    220   1.2  thorpej int
    221   1.2  thorpej mii_print(aux, pnp)
    222   1.1   bouyer 	void *aux;
    223   1.1   bouyer 	const char *pnp;
    224   1.1   bouyer {
    225   1.6  thorpej 	struct mii_attach_args *ma = aux;
    226   1.2  thorpej 
    227   1.6  thorpej 	if (pnp != NULL)
    228   1.8  thorpej 		printf("OUI 0x%06x model 0x%04x rev %d at %s",
    229   1.6  thorpej 		    MII_OUI(ma->mii_id1, ma->mii_id2), MII_MODEL(ma->mii_id2),
    230   1.6  thorpej 		    MII_REV(ma->mii_id2), pnp);
    231   1.6  thorpej 
    232   1.6  thorpej 	printf(" phy %d", ma->mii_phyno);
    233   1.1   bouyer 	return (UNCONF);
    234   1.1   bouyer }
    235   1.1   bouyer 
    236   1.1   bouyer int
    237   1.6  thorpej mii_submatch(parent, cf, aux)
    238   1.1   bouyer 	struct device *parent;
    239   1.1   bouyer 	struct cfdata *cf;
    240   1.1   bouyer 	void *aux;
    241   1.1   bouyer {
    242   1.6  thorpej 	struct mii_attach_args *ma = aux;
    243   1.1   bouyer 
    244   1.7  thorpej 	if (ma->mii_phyno != cf->cf_loc[MIICF_PHY] &&
    245   1.7  thorpej 	    cf->cf_loc[MIICF_PHY] != MIICF_PHY_DEFAULT)
    246   1.6  thorpej 		return (0);
    247   1.1   bouyer 
    248   1.1   bouyer 	return ((*cf->cf_attach->ca_match)(parent, cf, aux));
    249   1.1   bouyer }
    250   1.1   bouyer 
    251   1.6  thorpej /*
    252   1.6  thorpej  * Media changed; notify all PHYs.
    253   1.6  thorpej  */
    254   1.6  thorpej int
    255   1.6  thorpej mii_mediachg(mii)
    256   1.6  thorpej 	struct mii_data *mii;
    257   1.1   bouyer {
    258   1.6  thorpej 	struct mii_softc *child;
    259   1.6  thorpej 	int rv;
    260   1.1   bouyer 
    261   1.6  thorpej 	mii->mii_media_status = 0;
    262   1.6  thorpej 	mii->mii_media_active = IFM_NONE;
    263   1.6  thorpej 
    264   1.6  thorpej 	for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
    265   1.6  thorpej 	     child = LIST_NEXT(child, mii_list)) {
    266   1.6  thorpej 		rv = (*child->mii_service)(child, mii, MII_MEDIACHG);
    267   1.6  thorpej 		if (rv)
    268   1.6  thorpej 			return (rv);
    269   1.1   bouyer 	}
    270   1.6  thorpej 	return (0);
    271   1.1   bouyer }
    272   1.1   bouyer 
    273   1.6  thorpej /*
    274   1.6  thorpej  * Call the PHY tick routines, used during autonegotiation.
    275   1.6  thorpej  */
    276   1.6  thorpej void
    277   1.6  thorpej mii_tick(mii)
    278   1.6  thorpej 	struct mii_data *mii;
    279   1.1   bouyer {
    280   1.6  thorpej 	struct mii_softc *child;
    281   1.1   bouyer 
    282   1.6  thorpej 	for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
    283   1.6  thorpej 	     child = LIST_NEXT(child, mii_list))
    284   1.6  thorpej 		(void) (*child->mii_service)(child, mii, MII_TICK);
    285   1.1   bouyer }
    286   1.1   bouyer 
    287   1.6  thorpej /*
    288   1.6  thorpej  * Get media status from PHYs.
    289   1.6  thorpej  */
    290   1.2  thorpej void
    291   1.6  thorpej mii_pollstat(mii)
    292   1.6  thorpej 	struct mii_data *mii;
    293   1.1   bouyer {
    294   1.6  thorpej 	struct mii_softc *child;
    295   1.1   bouyer 
    296   1.6  thorpej 	mii->mii_media_status = 0;
    297   1.6  thorpej 	mii->mii_media_active = IFM_NONE;
    298   1.1   bouyer 
    299   1.6  thorpej 	for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
    300   1.6  thorpej 	     child = LIST_NEXT(child, mii_list))
    301   1.6  thorpej 		(void) (*child->mii_service)(child, mii, MII_POLLSTAT);
    302  1.16  thorpej }
    303  1.16  thorpej 
    304  1.16  thorpej /*
    305  1.16  thorpej  * Inform the PHYs that the interface is down.
    306  1.16  thorpej  */
    307  1.16  thorpej void
    308  1.16  thorpej mii_down(mii)
    309  1.16  thorpej 	struct mii_data *mii;
    310  1.16  thorpej {
    311  1.16  thorpej 	struct mii_softc *child;
    312  1.16  thorpej 
    313  1.16  thorpej 	for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
    314  1.16  thorpej 	     child = LIST_NEXT(child, mii_list))
    315  1.16  thorpej 		(void) (*child->mii_service)(child, mii, MII_DOWN);
    316   1.1   bouyer }
    317