From owner-svn-src-all@FreeBSD.ORG Sun Mar 27 23:03:15 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AF848106566C; Sun, 27 Mar 2011 23:03:15 +0000 (UTC) (envelope-from yongari@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 9CEFD8FC1C; Sun, 27 Mar 2011 23:03:15 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id p2RN3FoK072173; Sun, 27 Mar 2011 23:03:15 GMT (envelope-from yongari@svn.freebsd.org) Received: (from yongari@localhost) by svn.freebsd.org (8.14.3/8.14.3/Submit) id p2RN3FQt072171; Sun, 27 Mar 2011 23:03:15 GMT (envelope-from yongari@svn.freebsd.org) Message-Id: <201103272303.p2RN3FQt072171@svn.freebsd.org> From: Pyun YongHyeon Date: Sun, 27 Mar 2011 23:03:15 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org X-SVN-Group: stable-7 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r220075 - stable/7/sys/dev/dc X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Mar 2011 23:03:15 -0000 Author: yongari Date: Sun Mar 27 23:03:15 2011 New Revision: 220075 URL: http://svn.freebsd.org/changeset/base/220075 Log: MFC r218833,218964: r218833: 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. r218964: Remove unnecessary controller reinitialization which resulted in link flips during alias address insertion or dhclient operation. While I'm here remove dc_reset() in DC_ISR_BUS_ERR case. Device is fully reinitialized again in dc_init_locked(). Modified: stable/7/sys/dev/dc/if_dc.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/dev/dc/if_dc.c ============================================================================== --- stable/7/sys/dev/dc/if_dc.c Sun Mar 27 23:02:12 2011 (r220074) +++ stable/7/sys/dev/dc/if_dc.c Sun Mar 27 23:03:15 2011 (r220075) @@ -2894,6 +2894,7 @@ dc_rxeof(struct dc_softc *sc) if (rxstat & DC_RXSTAT_CRCERR) continue; else { + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); return; } @@ -3030,6 +3031,7 @@ dc_txeof(struct dc_softc *sc) if (txstat & DC_TXSTAT_LATECOLL) ifp->if_collisions++; if (!(txstat & DC_TXSTAT_UNDERRUN)) { + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); return; } @@ -3141,8 +3143,10 @@ dc_tx_underrun(struct dc_softc *sc) u_int32_t isr; int i; - if (DC_IS_DAVICOM(sc)) + if (DC_IS_DAVICOM(sc)) { + sc->dc_ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); + } if (DC_IS_INTEL(sc)) { /* @@ -3162,6 +3166,7 @@ dc_tx_underrun(struct dc_softc *sc) device_printf(sc->dc_dev, "%s: failed to force tx to idle state\n", __func__); + sc->dc_ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); } } @@ -3233,7 +3238,7 @@ dc_poll(struct ifnet *ifp, enum poll_cmd if (status & DC_ISR_BUS_ERR) { if_printf(ifp, "%s: bus error\n", __func__); - dc_reset(sc); + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); } } @@ -3246,7 +3251,7 @@ 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; @@ -3301,6 +3306,8 @@ 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) { @@ -3313,7 +3320,7 @@ dc_intr(void *arg) dc_start_locked(ifp); if (status & DC_ISR_BUS_ERR) { - dc_reset(sc); + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); DC_UNLOCK(sc); return; @@ -3559,6 +3566,9 @@ dc_init_locked(struct dc_softc *sc) DC_LOCK_ASSERT(sc); + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) + return; + mii = device_get_softc(sc->dc_miibus); /* @@ -3719,6 +3729,9 @@ 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; @@ -3809,6 +3822,7 @@ dc_ioctl(struct ifnet *ifp, u_long comma dc_setfilt(sc); } else { sc->dc_txthresh = 0; + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); } } else { @@ -3881,8 +3895,7 @@ dc_watchdog(void *xsc) ifp->if_oerrors++; device_printf(sc->dc_dev, "watchdog timeout\n"); - dc_stop(sc); - dc_reset(sc); + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; dc_init_locked(sc); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))