diff options
author | yongari <yongari@FreeBSD.org> | 2011-02-19 03:01:24 +0000 |
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committer | yongari <yongari@FreeBSD.org> | 2011-02-19 03:01:24 +0000 |
commit | 1bd7efaa29aa7eb95bb82132fabff7f3749c9e6d (patch) | |
tree | 61b57849172f76154eca900c5f2bd28ca78746fb /sys/dev/dc | |
parent | a3d06d520af806d906a02ca65270a5d0876fba3e (diff) | |
download | FreeBSD-src-1bd7efaa29aa7eb95bb82132fabff7f3749c9e6d.zip FreeBSD-src-1bd7efaa29aa7eb95bb82132fabff7f3749c9e6d.tar.gz |
Count how many frames driver lost in interrupt handler. This
register is cleared on read so make sure to clear it in driver
initialization phase.
Diffstat (limited to 'sys/dev/dc')
-rw-r--r-- | sys/dev/dc/if_dc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/dc/if_dc.c b/sys/dev/dc/if_dc.c index 6bd5ac0..1fb7d26 100644 --- a/sys/dev/dc/if_dc.c +++ b/sys/dev/dc/if_dc.c @@ -3250,7 +3250,7 @@ dc_intr(void *arg) { struct dc_softc *sc; struct ifnet *ifp; - u_int32_t status; + u_int32_t r, status; int curpkts, n; sc = arg; @@ -3305,6 +3305,8 @@ dc_intr(void *arg) if ((status & DC_ISR_RX_WATDOGTIMEO) || (status & DC_ISR_RX_NOBUF)) { + r = CSR_READ_4(sc, DC_FRAMESDISCARDED); + ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff); curpkts = ifp->if_ipackets; dc_rxeof(sc); if (curpkts == ifp->if_ipackets) { @@ -3723,6 +3725,9 @@ dc_init_locked(struct dc_softc *sc) mii_mediachg(mii); dc_setcfg(sc, sc->dc_if_media); + /* Clear missed frames and overflow counter. */ + CSR_READ_4(sc, DC_FRAMESDISCARDED); + /* Don't start the ticker if this is a homePNA link. */ if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1) sc->dc_link = 1; |