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author | yongari <yongari@FreeBSD.org> | 2011-10-24 20:26:37 +0000 |
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committer | yongari <yongari@FreeBSD.org> | 2011-10-24 20:26:37 +0000 |
commit | ef9809129f92e1983f1058871db1227f48e0d676 (patch) | |
tree | 03b18e3f224cd4f8a5e35c6d54861c0d1a5743d1 /sys/dev/dc | |
parent | e1fd5e5331152957e7a87f2ef2e02d155ed07de5 (diff) | |
download | FreeBSD-src-ef9809129f92e1983f1058871db1227f48e0d676.zip FreeBSD-src-ef9809129f92e1983f1058871db1227f48e0d676.tar.gz |
When driver is run for the first time there would be no established
link such that calling dc_setcfg() right after media change would
be meaningless unless controller in question is not Davicom DM9102.
Ideally dc_setcfg() should be called when speed/duplex is resolved
otherwise it would reprogram controller with wrong speed/duplex
information. Because MII status change callback already calls
dc_setcfg() I think calling dc_setcfg() in dc_init_locked() is
wrong. For instance, it would take some time to establish a link
after mii_mediachg(), so blindly calling dc_setcfg() right after
mii_mediachg() will always yield wrong media configuration.
Extend dc_ifmedia_upd() to handle media change and still allow
21143 and Davidcom controllers program speed/duplex regardless of
current resolved speed/duplex of link. In theory 21143 may not need
to call dc_setcfg() right after media change, but leave it as it is
because there are too many variants to test that change. Probably
dc(4) shall need a PHY reset in dc_ifmedia_upd() but it's hard to
verify correctness of the change.
This change reliably makes ULi M5263 establish a link.
While I'm here correctly report media change result. Previously it
always reported a success.
Diffstat (limited to 'sys/dev/dc')
-rw-r--r-- | sys/dev/dc/if_dc.c | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/sys/dev/dc/if_dc.c b/sys/dev/dc/if_dc.c index 452f5d3..38f4ca5 100644 --- a/sys/dev/dc/if_dc.c +++ b/sys/dev/dc/if_dc.c @@ -252,6 +252,7 @@ static void dc_stop(struct dc_softc *); static void dc_watchdog(void *); static int dc_shutdown(device_t); static int dc_ifmedia_upd(struct ifnet *); +static int dc_ifmedia_upd_locked(struct dc_softc *); static void dc_ifmedia_sts(struct ifnet *, struct ifmediareq *); static int dc_dma_alloc(struct dc_softc *); @@ -3740,8 +3741,7 @@ dc_init_locked(struct dc_softc *sc) ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; - mii_mediachg(mii); - dc_setcfg(sc, sc->dc_if_media); + dc_ifmedia_upd_locked(sc); /* Clear missed frames and overflow counter. */ CSR_READ_4(sc, DC_FRAMESDISCARDED); @@ -3767,25 +3767,37 @@ static int dc_ifmedia_upd(struct ifnet *ifp) { struct dc_softc *sc; - struct mii_data *mii; - struct ifmedia *ifm; + int error; sc = ifp->if_softc; - mii = device_get_softc(sc->dc_miibus); DC_LOCK(sc); - mii_mediachg(mii); - ifm = &mii->mii_media; - - if (DC_IS_INTEL(sc)) - dc_setcfg(sc, ifm->ifm_media); - else if (DC_IS_DAVICOM(sc) && - IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) - dc_setcfg(sc, ifm->ifm_media); - else - sc->dc_link = 0; + error = dc_ifmedia_upd_locked(sc); DC_UNLOCK(sc); + return (error); +} - return (0); +static int +dc_ifmedia_upd_locked(struct dc_softc *sc) +{ + struct mii_data *mii; + struct ifmedia *ifm; + int error; + + DC_LOCK_ASSERT(sc); + + sc->dc_link = 0; + mii = device_get_softc(sc->dc_miibus); + error = mii_mediachg(mii); + if (error == 0) { + ifm = &mii->mii_media; + if (DC_IS_INTEL(sc)) + dc_setcfg(sc, ifm->ifm_media); + else if (DC_IS_DAVICOM(sc) && + IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) + dc_setcfg(sc, ifm->ifm_media); + } + + return (error); } /* |