From owner-freebsd-current@FreeBSD.ORG Wed Oct 1 05:03:12 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5ED09599; Wed, 1 Oct 2014 05:03:12 +0000 (UTC) Received: from mail-wg0-x232.google.com (mail-wg0-x232.google.com [IPv6:2a00:1450:400c:c00::232]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C440FEAA; Wed, 1 Oct 2014 05:03:11 +0000 (UTC) Received: by mail-wg0-f50.google.com with SMTP id a1so106356wgh.21 for ; Tue, 30 Sep 2014 22:03:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type:content-transfer-encoding; bh=nv4bFdCQVlZlAATW7s/iBxA3JdRg54mWETU7xJaES30=; b=eHGdSBIQQ0uxpQrOZ9pg1WwCHy4T/Nk9M6D1Jz3dCywzPYnMrMi19taGNutIB2uIuk UhPBIfTgARmXBX/ZErn8kQgYn4CqEBviUcmfLxQLUKCOtckSsTbxH5r/olX7fw/ThPJU nvXhLeAGofZeI7jvene9NgBjdznvEpKKDG3K1hkCSQFtZQD9bMANiMwYVw5fIHVr4XCi tGguJ/tZ5Klr1z62WECRvnH+oHyPab9eQhSZtyRJjc16bj20E1QKJTk8jIi3qHFZc9+W tL1zonULH+CTX8jkLAWS4obwapOe8W6fVaN+x4iBxPK1SmCG5nmE5y6bXJw3aMnQ4LgB bFlQ== MIME-Version: 1.0 X-Received: by 10.194.157.230 with SMTP id wp6mr41686550wjb.15.1412139790034; Tue, 30 Sep 2014 22:03:10 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.216.106.136 with HTTP; Tue, 30 Sep 2014 22:03:09 -0700 (PDT) In-Reply-To: <90CE0701-F1CB-41DF-B3D2-87816DC03DF9@emc.com> References: <20140928071641.M7664@beckpeccoz.com> <20140929003358.M78145@aoek.com> <542AC1C8.9030101@freebsd.org> <90CE0701-F1CB-41DF-B3D2-87816DC03DF9@emc.com> Date: Tue, 30 Sep 2014 22:03:09 -0700 X-Google-Sender-Auth: 1mCd-iHuRQbINIzp6QxthuwsiS4 Message-ID: Subject: Re: What do you use for kernel debugging? From: Adrian Chadd To: "O'Connor, Daniel" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: =?UTF-8?Q?Jos=C3=A9_P=C3=A9rez_Arauzo?= , FreeBSD Current , Benjamin Kaduk , Garrett Cooper X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Oct 2014 05:03:12 -0000 There's also something for XHCI. Please please write it for freebsd. :) -a On 30 September 2014 21:45, O'Connor, Daniel wrot= e: > > On 1 Oct 2014, at 0:14, Julian Elischer wrote: >> Unfortunately you can't use a USB serial as it requires the USB stack >> be working before it can be used.. >> similar with ethernet connected debugging which requires that the >> driver for the ethernet hardware support it. >> (which why we don't have it in the tree though it has been done >> several times in the past). > > There IS a USB debug standard, Linux has some code to support it. > > I am not sure what percentage of hardware has it hooked up though (the ho= st controller has a designated debug port but it could physically be anythi= ng). > > http://www.coreboot.org/EHCI_Debug_Port > > The hardware is bit more expensive than a null modem or firewire cable th= ough :( > > Regards, > Daniel O=E2=80=99Connor > > Senior Software Engineer > Isilon Platforms Team > > > > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= "