From owner-freebsd-questions@FreeBSD.ORG Mon Apr 20 14:27:53 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EA92B106567B for ; Mon, 20 Apr 2009 14:27:53 +0000 (UTC) (envelope-from frederique@isafeelin.org) Received: from srv0010.pine.nl (srv0010.pine.nl [213.156.9.9]) by mx1.freebsd.org (Postfix) with ESMTP id A5B908FC1D for ; Mon, 20 Apr 2009 14:27:53 +0000 (UTC) (envelope-from frederique@isafeelin.org) Received: from localhost (localhost [127.0.0.1]) by srv0010.pine.nl (Postfix) with ESMTP id 81808580FC5 for ; Mon, 20 Apr 2009 16:27:52 +0200 (CEST) X-Virus-Scanned: amavisd-new at pine.nl Received: from srv0010.pine.nl ([127.0.0.1]) by localhost (srv0010.pine.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id XczBPchh3c2e for ; Mon, 20 Apr 2009 16:27:47 +0200 (CEST) Received: from fileserver.pine.nl (a83-161-224-82.adsl.xs4all.nl [83.161.224.82]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by srv0010.pine.nl (Postfix) with ESMTPS id DCA33580CA6 for ; Mon, 20 Apr 2009 16:27:47 +0200 (CEST) Received: from freelt.pine.nl (unknown [172.16.0.46]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by fileserver.pine.nl (Postfix) with ESMTPS id 8588D130EA5 for ; Mon, 20 Apr 2009 16:27:47 +0200 (CEST) Message-ID: <49EC8668.5060303@isafeelin.org> Date: Mon, 20 Apr 2009 16:27:52 +0200 From: Frederique Rijsdijk User-Agent: Thunderbird 2.0.0.21 (X11/20090419) MIME-Version: 1.0 To: FreeBSD-Questions Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: serial console, COM port not working -> [FILTER] ? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Apr 2009 14:27:54 -0000 I'm setting up serial console access to our machines. One of them isn't giving a login prompt, and I noticed a difference in dmesg output: > sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 > sio0: type 16550A > sio0: [FILTER] The last line I don't see on boxes where all is fine. My C reading isn't that good, but I've found in /usr/src/sys/kern/subr_bus.c: > bus_setup_intr(device_t dev, struct resource *r, int flags, > driver_filter_t filter, driver_intr_t handler, void *arg, void **cookiep) > { > int error; > > if (dev->parent != NULL) { > error = BUS_SETUP_INTR(dev->parent, dev, r, flags, > filter, handler, arg, cookiep); > if (error == 0) { > if (handler != NULL && !(flags & INTR_MPSAFE)) > device_printf(dev, "[GIANT-LOCKED]\n"); > if (bootverbose && (flags & INTR_MPSAFE)) > device_printf(dev, "[MPSAFE]\n"); > if (filter != NULL) { > if (handler == NULL) > device_printf(dev, "[FILTER]\n"); > else > device_printf(dev, "[FILTER+ITHREAD]\n"); > } else > device_printf(dev, "[ITHREAD]\n"); > } > } else > error = EINVAL; > return (error); > } But what does it mean? Thanks, -- Frederique