355 lines
8.7 KiB
C
355 lines
8.7 KiB
C
/* $NetBSD: jmphy.c,v 1.5 2023/02/22 08:09:09 msaitoh Exp $ */
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/* $OpenBSD: jmphy.c,v 1.6 2015/03/14 03:38:48 jsg Exp $ */
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/*-
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* Copyright (c) 2008, 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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* $FreeBSD: src/sys/dev/mii/jmphy.c,v 1.1 2008/05/27 01:16:40 yongari Exp $
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* $DragonFly: src/sys/dev/netif/mii_layer/jmphy.c,v 1.1 2008/07/22 11:28:49 sephe Exp $
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*/
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/*
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* Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
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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/device.h>
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#include <sys/socket.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/jmphyreg.h>
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static int jmphy_service(struct mii_softc *, struct mii_data *, int);
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static void jmphy_status(struct mii_softc *);
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static int jmphy_match(device_t, cfdata_t, void *);
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static void jmphy_attach(device_t, device_t, void *);
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static void jmphy_reset(struct mii_softc *);
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static uint16_t jmphy_anar(struct ifmedia_entry *);
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static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *);
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static const struct mii_phy_funcs jmphy_funcs = {
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jmphy_service, jmphy_status, jmphy_reset,
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};
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CFATTACH_DECL_NEW(jmphy, sizeof (struct mii_softc),
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jmphy_match, jmphy_attach, mii_phy_detach, mii_phy_activate);
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static const struct mii_phydesc jmphys[] = {
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MII_PHY_DESC(JMICRON, JMP202),
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MII_PHY_DESC(JMICRON, JMP211),
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MII_PHY_END,
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};
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static int
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jmphy_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, jmphys) != 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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jmphy_attach(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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const struct mii_phydesc *mpd;
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mpd = mii_phy_match(ma, jmphys);
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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_funcs = &jmphy_funcs;
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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_pdata = mii;
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sc->mii_flags = ma->mii_flags;
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sc->mii_flags |= MIIF_NOISOLATE | 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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jmphy_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 bmcr, ssr;
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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, &bmcr);
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PHY_WRITE(sc, MII_BMCR, bmcr | 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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if (jmphy_auto(sc, ife) != EJUSTRETURN)
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return EINVAL;
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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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break;
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/* Check for link. */
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PHY_READ(sc, JMPHY_SSR, &ssr);
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if (ssr & JMPHY_SSR_LINK_UP) {
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sc->mii_ticks = 0;
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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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if (sc->mii_ticks < sc->mii_anegticks)
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return 0;
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sc->mii_ticks = 0;
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jmphy_auto(sc, ife);
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break;
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}
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/* Update the media status. */
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jmphy_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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jmphy_status(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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uint16_t bmcr, ssr, gtsr;
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KASSERT(mii_locked(mii));
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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, JMPHY_SSR, &ssr);
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if ((ssr & JMPHY_SSR_LINK_UP) != 0)
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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_ISO) != 0) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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if ((bmcr & BMCR_LOOP) != 0)
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mii->mii_media_active |= IFM_LOOP;
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if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 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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switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
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case JMPHY_SSR_SPEED_1000:
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mii->mii_media_active |= IFM_1000_T;
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/*
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* jmphy(4) got a valid link so reset mii_ticks.
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* Resetting mii_ticks is needed in order to
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* detect link loss after auto-negotiation.
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*/
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sc->mii_ticks = 0;
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break;
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case JMPHY_SSR_SPEED_100:
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mii->mii_media_active |= IFM_100_TX;
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sc->mii_ticks = 0;
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break;
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case JMPHY_SSR_SPEED_10:
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mii->mii_media_active |= IFM_10_T;
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sc->mii_ticks = 0;
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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 ((ssr & JMPHY_SSR_DUPLEX) != 0)
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mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
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else
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mii->mii_media_active |= IFM_HDX;
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if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
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PHY_READ(sc, MII_GTSR, >sr);
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if ((gtsr & GTSR_MS_RES) != 0)
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mii->mii_media_active |= IFM_ETH_MASTER;
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}
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}
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static void
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jmphy_reset(struct mii_softc *sc)
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{
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int i;
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uint16_t val;
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KASSERT(mii_locked(sc->mii_pdata));
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/* Disable sleep mode. */
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PHY_READ(sc, JMPHY_TMCTL, &val);
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PHY_WRITE(sc, JMPHY_TMCTL, val & ~JMPHY_TMCTL_SLEEP_ENB);
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PHY_READ(sc, MII_BMCR, &val);
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PHY_WRITE(sc, MII_BMCR, val | BMCR_RESET);
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for (i = 0; i < 1000; i++) {
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DELAY(1);
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PHY_READ(sc, MII_BMCR, &val);
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if ((val & BMCR_RESET) == 0)
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break;
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}
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}
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static uint16_t
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jmphy_anar(struct ifmedia_entry *ife)
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{
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uint16_t anar;
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anar = 0;
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
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break;
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case IFM_1000_T:
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break;
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case IFM_100_TX:
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anar |= ANAR_TX | ANAR_TX_FD;
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break;
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case IFM_10_T:
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anar |= ANAR_10 | ANAR_10_FD;
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break;
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default:
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break;
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}
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return anar;
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}
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static int
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jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife)
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{
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uint16_t anar, bmcr, gig;
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KASSERT(mii_locked(sc->mii_pdata));
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gig = 0;
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PHY_READ(sc, MII_BMCR, &bmcr);
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
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break;
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case IFM_1000_T:
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gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
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break;
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case IFM_100_TX:
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case IFM_10_T:
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break;
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case IFM_NONE:
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PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
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return EJUSTRETURN;
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default:
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return EINVAL;
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}
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if ((ife->ifm_media & IFM_LOOP) != 0)
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bmcr |= BMCR_LOOP;
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anar = jmphy_anar(ife);
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if (sc->mii_flags & MIIF_DOPAUSE)
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anar |= ANAR_PAUSE_TOWARDS;
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if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
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#ifdef notyet
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struct mii_data *mii;
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mii = sc->mii_pdata;
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if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0)
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gig |= GTCR_MAN_MS | GTCR_MAN_ADV;
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#endif
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PHY_WRITE(sc, MII_100T2CR, gig);
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}
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PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
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PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
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return EJUSTRETURN;
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}
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