24a7e3d3de
ones were made by Lucent). The Broadcom chip also appears to use an internal PHY made by Broadcom which uses the Broadcom OUI. This is different from previous ASICs which always returned 0 in the PHY ID registers. To account for this, I added the necessary ID values for the Broadcom PHY so that it can be detected and attached using the 3Com PHY driver instead of defaulting to the generic one.
328 lines
8.2 KiB
C
328 lines
8.2 KiB
C
/* $NetBSD: mii.c,v 1.12 1999/08/03 19:41:49 drochner Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* MII bus layer, glues MII-capable network interface drivers to sharable
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* PHY drivers. This exports an interface compatible with BSD/OS 3.0's,
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* plus some NetBSD extensions.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "miibus_if.h"
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#if !defined(lint)
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static const char rcsid[] =
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"$Id: mii.c,v 1.1 1999/08/21 17:40:41 wpaul Exp $";
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#endif
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static int miibus_readreg __P((device_t, int, int));
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static int miibus_writereg __P((device_t, int, int, int));
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static void miibus_statchg __P((device_t));
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static void miibus_mediainit __P((device_t));
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static device_method_t miibus_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, miibus_probe),
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DEVMETHOD(device_attach, miibus_attach),
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DEVMETHOD(device_detach, miibus_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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/* bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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/* MII interface */
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DEVMETHOD(miibus_readreg, miibus_readreg),
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DEVMETHOD(miibus_writereg, miibus_writereg),
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DEVMETHOD(miibus_statchg, miibus_statchg),
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DEVMETHOD(miibus_mediainit, miibus_mediainit),
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{ 0, 0 }
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};
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devclass_t miibus_devclass;
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driver_t miibus_driver = {
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"miibus",
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miibus_methods,
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sizeof(struct mii_data)
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};
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/*
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* Helper function used by network interface drivers, attaches PHYs
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* to the network interface driver parent.
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*/
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int miibus_probe(dev)
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device_t dev;
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{
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struct mii_attach_args ma, *args;
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struct mii_data *mii;
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device_t child = NULL, parent;
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int bmsr, capmask = 0xFFFFFFFF;
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mii = device_get_softc(dev);
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parent = device_get_parent(dev);
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LIST_INIT(&mii->mii_phys);
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for (ma.mii_phyno = 0; ma.mii_phyno < MII_NPHY; ma.mii_phyno++) {
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/*
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* Check to see if there is a PHY at this address. Note,
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* many braindead PHYs report 0/0 in their ID registers,
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* so we test for media in the BMSR.
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*/
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bmsr = MIIBUS_READREG(parent, ma.mii_phyno, MII_BMSR);
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if (bmsr == 0 || bmsr == 0xffff ||
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(bmsr & BMSR_MEDIAMASK) == 0) {
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/* Assume no PHY at this address. */
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continue;
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}
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/*
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* Extract the IDs. Braindead PHYs will be handled by
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* the `ukphy' driver, as we have no ID information to
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* match on.
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*/
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ma.mii_id1 = MIIBUS_READREG(parent, ma.mii_phyno,
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MII_PHYIDR1);
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ma.mii_id2 = MIIBUS_READREG(parent, ma.mii_phyno,
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MII_PHYIDR2);
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ma.mii_data = mii;
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ma.mii_capmask = capmask;
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args = malloc(sizeof(struct mii_attach_args),
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M_DEVBUF, M_NOWAIT);
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bcopy((char *)&ma, (char *)args, sizeof(ma));
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child = device_add_child(dev, NULL, -1, args);
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}
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if (child == NULL)
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return(ENXIO);
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device_set_desc(dev, "MII bus");
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return(0);
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}
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int miibus_attach(dev)
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device_t dev;
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{
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void **v;
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ifm_change_cb_t ifmedia_upd;
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ifm_stat_cb_t ifmedia_sts;
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struct mii_data *mii;
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mii = device_get_softc(dev);
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mii->mii_ifp = device_get_softc(device_get_parent(dev));
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v = device_get_ivars(dev);
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ifmedia_upd = v[0];
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ifmedia_sts = v[1];
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ifmedia_init(&mii->mii_media, IFM_IMASK, ifmedia_upd, ifmedia_sts);
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bus_generic_attach(dev);
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return(0);
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}
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int miibus_detach(dev)
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device_t dev;
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{
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struct mii_data *mii;
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bus_generic_detach(dev);
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mii = device_get_softc(dev);
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ifmedia_removeall(&mii->mii_media);
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mii->mii_ifp = NULL;
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return(0);
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}
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static int miibus_readreg(dev, phy, reg)
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device_t dev;
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int phy, reg;
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{
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device_t parent;
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parent = device_get_parent(dev);
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return(MIIBUS_READREG(parent, phy, reg));
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}
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static int miibus_writereg(dev, phy, reg, data)
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device_t dev;
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int phy, reg, data;
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{
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device_t parent;
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parent = device_get_parent(dev);
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return(MIIBUS_WRITEREG(parent, phy, reg, data));
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}
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static void miibus_statchg(dev)
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device_t dev;
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{
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device_t parent;
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parent = device_get_parent(dev);
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MIIBUS_STATCHG(parent);
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return;
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}
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static void miibus_mediainit(dev)
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device_t dev;
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{
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struct mii_data *mii;
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struct ifmedia_entry *m;
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int media = 0;
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/* Poke the parent in case it has any media of its own to add. */
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MIIBUS_MEDIAINIT(device_get_parent(dev));
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mii = device_get_softc(dev);
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for (m = LIST_FIRST(&mii->mii_media.ifm_list); m != NULL;
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m = LIST_NEXT(m, ifm_list)) {
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media = m->ifm_media;
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if (media == (IFM_ETHER|IFM_AUTO))
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break;
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}
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ifmedia_set(&mii->mii_media, media);
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return;
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}
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int mii_phy_probe(dev, child, ifmedia_upd, ifmedia_sts)
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device_t dev;
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device_t *child;
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ifm_change_cb_t ifmedia_upd;
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ifm_stat_cb_t ifmedia_sts;
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{
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void **v;
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int bmsr, i;
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v = malloc(sizeof(vm_offset_t) * 2, M_DEVBUF, M_NOWAIT);
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v[0] = ifmedia_upd;
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v[1] = ifmedia_sts;
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*child = device_add_child(dev, "miibus", -1, v);
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for (i = 0; i < MII_NPHY; i++) {
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bmsr = MIIBUS_READREG(dev, i, MII_BMSR);
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if (bmsr == 0 || bmsr == 0xffff ||
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(bmsr & BMSR_MEDIAMASK) == 0) {
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/* Assume no PHY at this address. */
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continue;
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} else
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break;
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}
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if (i == MII_NPHY) {
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device_delete_child(dev, *child);
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*child = NULL;
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return(ENXIO);
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}
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bus_generic_attach(dev);
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return(0);
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}
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/*
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* Media changed; notify all PHYs.
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*/
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int
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mii_mediachg(mii)
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struct mii_data *mii;
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{
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struct mii_softc *child;
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int rv;
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mii->mii_media_status = 0;
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mii->mii_media_active = IFM_NONE;
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for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
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child = LIST_NEXT(child, mii_list)) {
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rv = (*child->mii_service)(child, mii, MII_MEDIACHG);
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if (rv)
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return (rv);
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}
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return (0);
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}
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/*
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* Call the PHY tick routines, used during autonegotiation.
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*/
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void
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mii_tick(mii)
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struct mii_data *mii;
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{
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struct mii_softc *child;
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for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
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child = LIST_NEXT(child, mii_list))
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(void) (*child->mii_service)(child, mii, MII_TICK);
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}
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/*
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* Get media status from PHYs.
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*/
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void
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mii_pollstat(mii)
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struct mii_data *mii;
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{
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struct mii_softc *child;
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mii->mii_media_status = 0;
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mii->mii_media_active = IFM_NONE;
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for (child = LIST_FIRST(&mii->mii_phys); child != NULL;
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child = LIST_NEXT(child, mii_list))
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(void) (*child->mii_service)(child, mii, MII_POLLSTAT);
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}
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