205 lines
6.3 KiB
C
205 lines
6.3 KiB
C
/* $NetBSD: ukphy.c,v 1.55 2021/06/29 21:03:36 pgoyette Exp $ */
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/*-
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* Copyright (c) 1998, 1999, 2000 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, and by Frank van der Linden.
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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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*
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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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* Copyright (c) 1997 Manuel Bouyer. All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* driver for generic unknown PHYs
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ukphy.c,v 1.55 2021/06/29 21:03:36 pgoyette Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_mii.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <sys/errno.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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static int ukphymatch(device_t, cfdata_t, void *);
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static void ukphyattach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(ukphy, sizeof(struct mii_softc),
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ukphymatch, ukphyattach, mii_phy_detach, mii_phy_activate);
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static int ukphy_service(struct mii_softc *, struct mii_data *, int);
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static const struct mii_phy_funcs ukphy_funcs = {
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ukphy_service, ukphy_status, mii_phy_reset,
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};
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static int
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ukphymatch(device_t parent, cfdata_t match, void *aux)
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{
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/*
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* We know something is here, so always match at a low priority.
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*/
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return 1;
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}
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static void
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ukphyattach(device_t parent, device_t self, void *aux)
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{
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struct mii_softc *sc = device_private(self);
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struct mii_attach_args *ma = aux;
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struct mii_data *mii = ma->mii_data;
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int oui = MII_OUI(ma->mii_id1, ma->mii_id2);
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int model = MII_MODEL(ma->mii_id2);
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int rev = MII_REV(ma->mii_id2);
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char descr[MII_MAX_DESCR_LEN];
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if (mii_get_descr(descr, sizeof(descr), oui, model) && descr[0])
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aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n",
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descr, oui, model, rev);
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else
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aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n",
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oui, model, rev);
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aprint_naive(": Media interface\n");
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sc->mii_dev = self;
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sc->mii_inst = mii->mii_instance;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
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sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
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sc->mii_mpd_rev = MII_REV(ma->mii_id2);
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sc->mii_funcs = &ukphy_funcs;
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sc->mii_pdata = mii;
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sc->mii_flags = ma->mii_flags;
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/*
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* Don't do loopback on unknown PHYs. It might confuse some of them.
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*/
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sc->mii_flags |= MIIF_NOLOOP;
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mii_lock(mii);
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PHY_RESET(sc);
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PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
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sc->mii_capabilities &= ma->mii_capmask;
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if (sc->mii_capabilities & BMSR_EXTSTAT)
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PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities);
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mii_unlock(mii);
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mii_phy_add_media(sc);
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}
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static int
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ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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uint16_t reg;
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KASSERT(mii_locked(mii));
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switch (cmd) {
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case MII_POLLSTAT:
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/* If we're not polling our PHY instance, just return. */
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return 0;
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break;
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case MII_MEDIACHG:
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/*
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* If the media indicates a different PHY instance,
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* isolate ourselves.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
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PHY_READ(sc, MII_BMCR, ®);
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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return 0;
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}
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/* If the interface is not up, don't do anything. */
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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break;
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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/* If we're not currently selected, just return. */
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return 0;
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if (mii_phy_tick(sc) == EJUSTRETURN)
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return 0;
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break;
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case MII_DOWN:
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mii_phy_down(sc);
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return 0;
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}
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/* Update the media status. */
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mii_phy_status(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return 0;
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}
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