Date: Sat, 19 Feb 2011 03:01:24 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r218833 - head/sys/dev/dc Message-ID: <201102190301.p1J31O3g081740@svn.freebsd.org>
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Author: yongari Date: Sat Feb 19 03:01:24 2011 New Revision: 218833 URL: http://svn.freebsd.org/changeset/base/218833 Log: 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. Modified: head/sys/dev/dc/if_dc.c Modified: head/sys/dev/dc/if_dc.c ============================================================================== --- head/sys/dev/dc/if_dc.c Sat Feb 19 02:47:10 2011 (r218832) +++ head/sys/dev/dc/if_dc.c Sat Feb 19 03:01:24 2011 (r218833) @@ -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;
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