Date: Wed, 12 Sep 2007 01:27:20 GMT From: Mark Derbyshire <mark@taom.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/116295: nfe driver hangs on boot (MSI K9N SLI Platinum) Message-ID: <200709120127.l8C1RKLC035233@www.freebsd.org> Resent-Message-ID: <200709120130.l8C1U2wm059896@freefall.freebsd.org>
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>Number: 116295 >Category: kern >Synopsis: nfe driver hangs on boot (MSI K9N SLI Platinum) >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Sep 12 01:30:02 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Mark Derbyshire >Release: 7-CURRENT/6.2-RELEASE backport >Organization: >Environment: FreeBSD freebsd.taom.com 6.2-RELEASE FreeBSD 6.2-RELEASE #10: Tue Sep 11 17:00:01 MDT 2007 root@freebsd.taom.com:/usr/obj/usr/src/sys/TAOM amd64 >Description: Driver hangs in an apparent interrupt loop on boot in nfe_int_task with the MSI K9N SLI Platinum motherboard. It seems to work fine on other MCPxx-based boards I tried. If nfe0 is not plugged to a live switch, the boot will succeed. However when nfe0 is plugged into a GbE, full-duplex switch it hangs every time. It does not matter whether nfe1 is plugged in for either of these cases. Revision 1.14 of if_nfe.c does not have this problem. Revision 1.17 appears to have introduced the bug. >How-To-Repeat: Plug nfe0 from a MSI K9N SLI Platinum motherboard into a GbE switch and boot the system. >Fix: --- if_nfe.c.orig 2007-07-23 19:11:00.000000000 -0600 +++ if_nfe.c 2007-09-11 19:24:58.000000000 -0600 @@ -1930,18 +1930,18 @@ } #endif - if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { - NFE_UNLOCK(sc); - nfe_enable_intr(sc); - return; - } - if (r & NFE_IRQ_LINK) { NFE_READ(sc, NFE_PHY_STATUS); NFE_WRITE(sc, NFE_PHY_STATUS, 0xf); DPRINTF(sc, "link state changed\n"); } + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { + NFE_UNLOCK(sc); + nfe_enable_intr(sc); + return; + } + domore = 0; /* check Rx ring */ if (sc->nfe_framesize > MCLBYTES - ETHER_HDR_LEN) >Release-Note: >Audit-Trail: >Unformatted:
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