396 lines
9.7 KiB
C
396 lines
9.7 KiB
C
/* $NetBSD: ipgphy.c,v 1.11 2023/02/22 08:09:09 msaitoh Exp $ */
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/* $OpenBSD: ipgphy.c,v 1.19 2015/07/19 06:28:12 yuo Exp $ */
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/*-
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* Copyright (c) 2006, Pyun YongHyeon <yongari@FreeBSD.org>
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* 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 unmodified, this list of conditions, and the following
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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ipgphy.c,v 1.11 2023/02/22 08:09:09 msaitoh Exp $");
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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 <prop/proplib.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 <dev/mii/miidevs.h>
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#include <dev/mii/ipgphyreg.h>
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static int ipgphy_match(device_t, cfdata_t, void *);
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static void ipgphy_attach(device_t, device_t, void *);
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struct ipgphy_softc {
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struct mii_softc sc_mii;
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bool need_loaddspcode;
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};
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CFATTACH_DECL_NEW(ipgphy, sizeof(struct ipgphy_softc),
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ipgphy_match, ipgphy_attach, mii_phy_detach, mii_phy_activate);
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static int ipgphy_service(struct mii_softc *, struct mii_data *, int);
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static void ipgphy_status(struct mii_softc *);
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static int ipgphy_mii_phy_auto(struct mii_softc *, u_int);
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static void ipgphy_load_dspcode(struct mii_softc *);
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static void ipgphy_reset(struct mii_softc *);
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static const struct mii_phy_funcs ipgphy_funcs = {
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ipgphy_service, ipgphy_status, ipgphy_reset,
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};
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static const struct mii_phydesc ipgphys[] = {
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MII_PHY_DESC(xxICPLUS, IP1000A),
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MII_PHY_DESC(xxICPLUS, IP1001),
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MII_PHY_END,
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};
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static int
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ipgphy_match(device_t parent, cfdata_t match, void *aux)
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{
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struct mii_attach_args *ma = aux;
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if (mii_phy_match(ma, ipgphys) != NULL)
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return 10;
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return 0;
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}
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static void
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ipgphy_attach(device_t parent, device_t self, void *aux)
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{
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struct ipgphy_softc *isc = device_private(self);
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struct mii_softc *sc = &isc->sc_mii;
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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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const struct mii_phydesc *mpd;
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prop_dictionary_t dict;
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mpd = mii_phy_match(ma, ipgphys);
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aprint_naive(": Media interface\n");
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aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
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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 = &ipgphy_funcs;
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sc->mii_pdata = mii;
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sc->mii_flags = ma->mii_flags;
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sc->mii_flags |= MIIF_NOISOLATE;
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if (device_is_a(parent, "stge")) {
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dict = device_properties(parent);
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prop_dictionary_get_bool(dict, "need_loaddspcode",
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&isc->need_loaddspcode);
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}
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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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//sc->mii_capabilities &= ~BMSR_ANEG;
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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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ipgphy_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, speed;
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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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PHY_RESET(sc);
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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case IFM_1000_T:
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/*
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* This device is required to do auto negotiation
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* on 1000BASE-T.
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*/
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(void)ipgphy_mii_phy_auto(sc, ife->ifm_media);
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goto done;
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break;
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case IFM_100_TX:
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speed = BMCR_S100;
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break;
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case IFM_10_T:
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speed = BMCR_S10;
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break;
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default:
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return EINVAL;
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}
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if ((ife->ifm_media & IFM_FDX) != 0)
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speed |= BMCR_FDX;
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PHY_WRITE(sc, MII_100T2CR, 0);
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PHY_WRITE(sc, MII_BMCR, speed);
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done:
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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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/* Is the interface even up? */
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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return 0;
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/* Only used for autonegotiation. */
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if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) &&
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(IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) {
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sc->mii_ticks = 0;
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break;
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}
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/*
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* Check to see if we have link. If we do, we don't
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* need to restart the autonegotiation process. Read
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* the BMSR twice in case it's latched.
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*/
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PHY_READ(sc, MII_BMSR, ®);
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PHY_READ(sc, MII_BMSR, ®);
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if (reg & BMSR_LINK) {
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/*
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* Reset autonegotiation timer to 0 in case the link
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* goes down in the next tick.
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*/
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sc->mii_ticks = 0;
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/* See above. */
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break;
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}
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/* Announce link loss right after it happens */
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if (sc->mii_ticks++ == 0)
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break;
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/* Only retry autonegotiation every mii_anegticks seconds. */
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if (sc->mii_ticks < sc->mii_anegticks)
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break;
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sc->mii_ticks = 0;
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ipgphy_mii_phy_auto(sc, ife->ifm_media);
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break;
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}
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/* Update the media status. */
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ipgphy_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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static void
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ipgphy_status(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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uint16_t bmsr, bmcr, stat, gtsr;
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KASSERT(mii_locked(mii));
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/* For IP1000A, use generic way */
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if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1000A) {
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ukphy_status(sc);
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return;
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}
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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PHY_READ(sc, MII_BMSR, &bmsr);
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PHY_READ(sc, MII_BMSR, &bmsr);
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if (bmsr & BMSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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PHY_READ(sc, MII_BMCR, &bmcr);
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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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if ((bmsr & BMSR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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PHY_READ(sc, IPGPHY_LSR, &stat);
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switch (stat & IPGPHY_LSR_SPEED_MASK) {
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case IPGPHY_LSR_SPEED_10:
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mii->mii_media_active |= IFM_10_T;
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break;
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case IPGPHY_LSR_SPEED_100:
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mii->mii_media_active |= IFM_100_TX;
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break;
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case IPGPHY_LSR_SPEED_1000:
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mii->mii_media_active |= IFM_1000_T;
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break;
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default:
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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if (stat & IPGPHY_LSR_FULL_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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else
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mii->mii_media_active |= IFM_HDX;
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if (mii->mii_media_active & IFM_FDX)
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mii->mii_media_active |= mii_phy_flowstatus(sc);
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if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
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PHY_READ(sc, MII_100T2SR, >sr);
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if (gtsr & GTSR_MS_RES)
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mii->mii_media_active |= IFM_ETH_MASTER;
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}
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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static int
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ipgphy_mii_phy_auto(struct mii_softc *sc, u_int media)
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{
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uint16_t reg = 0;
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u_int subtype = IFM_SUBTYPE(media);
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KASSERT(mii_locked(sc->mii_pdata));
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/* XXX Is it requreid ? */
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if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
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PHY_READ(sc, MII_ANAR, ®);
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reg &= ~(ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM);
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reg |= ANAR_NP;
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}
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if (subtype == IFM_AUTO)
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reg |= ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD;
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if (sc->mii_flags & MIIF_DOPAUSE)
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reg |= ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM;
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PHY_WRITE(sc, MII_ANAR, reg | ANAR_CSMA);
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if (subtype == IFM_AUTO)
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reg = GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
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else if (subtype == IFM_1000_T) {
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if ((media & IFM_FDX) != 0)
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reg = GTCR_ADV_1000TFDX;
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else
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reg = GTCR_ADV_1000THDX;
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} else
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reg = 0;
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PHY_WRITE(sc, MII_100T2CR, reg);
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PHY_WRITE(sc, MII_BMCR, BMCR_FDX | BMCR_AUTOEN | BMCR_STARTNEG);
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return EJUSTRETURN;
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}
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static void
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ipgphy_load_dspcode(struct mii_softc *sc)
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{
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PHY_WRITE(sc, 31, 0x0001);
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PHY_WRITE(sc, 27, 0x01e0);
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PHY_WRITE(sc, 31, 0x0002);
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PHY_WRITE(sc, 27, 0xeb8e);
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PHY_WRITE(sc, 31, 0x0000);
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PHY_WRITE(sc, 30, 0x005e);
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PHY_WRITE(sc, 9, 0x0700);
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DELAY(50);
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}
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static void
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ipgphy_reset(struct mii_softc *sc)
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{
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struct ipgphy_softc *isc = device_private(sc->mii_dev);
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uint16_t reg;
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KASSERT(mii_locked(sc->mii_pdata));
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mii_phy_reset(sc);
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/* Clear autoneg/full-duplex as we don't want it after reset */
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PHY_READ(sc, MII_BMCR, ®);
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reg &= ~(BMCR_AUTOEN | BMCR_FDX);
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PHY_WRITE(sc, MII_BMCR, reg);
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if (isc->need_loaddspcode)
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ipgphy_load_dspcode(sc);
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}
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