From owner-freebsd-embedded@FreeBSD.ORG Tue Dec 20 04:34:52 2011 Return-Path: Delivered-To: freebsd-embedded@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 46BCD106568A; Tue, 20 Dec 2011 04:34:52 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-vw0-f54.google.com (mail-vw0-f54.google.com [209.85.212.54]) by mx1.freebsd.org (Postfix) with ESMTP id D71968FC1B; Tue, 20 Dec 2011 04:34:51 +0000 (UTC) Received: by vbbfr13 with SMTP id fr13so7925701vbb.13 for ; Mon, 19 Dec 2011 20:34:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=FAlCgw/hubQoSYcHmiqMSnDOvw+xdTmsryMhMwmfNWA=; b=VfLqOEiV74RIGO9wgRm70LEgAEidPD9Nnfcpza4iT/nPK5dbKjAbLRYugpJrZjrG7R HRHibwiK8gIDfC8ZQ+xqq2B8dbjrVHRwzocJ0NFzzKt7uh/0DIqnFPyBSXpmsepa+2pd rG3NujpXA6AEDsrHzeAOgk3LHByVXSre8+WNo= MIME-Version: 1.0 Received: by 10.52.90.164 with SMTP id bx4mr195425vdb.128.1324355691085; Mon, 19 Dec 2011 20:34:51 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.52.158.104 with HTTP; Mon, 19 Dec 2011 20:34:51 -0800 (PST) In-Reply-To: References: <0F6CC18F-6973-42A2-AC03-F01BF59458AE@lassitu.de> <1100F70E-9DA9-4163-AC9A-423ECE5AA9A3@lassitu.de> <18CABB46-9B9A-41CB-8742-6723C5FF4D67@lassitu.de> <2CBD8651-E132-49DC-A082-37A8F5C626EA@bsdimp.com> Date: Mon, 19 Dec 2011 20:34:51 -0800 X-Google-Sender-Auth: AP_tnXAkFzBkBF16ZEBJgJOb5c4 Message-ID: From: Adrian Chadd To: Warner Losh Content-Type: text/plain; charset=ISO-8859-1 Cc: Oleksandr Tymoshenko , Stefan Bethke , "freebsd-embedded@freebsd.org" Subject: Re: Updated switch/glue patch? X-BeenThere: freebsd-embedded@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Dedicated and Embedded Systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Dec 2011 04:34:52 -0000 On 19 December 2011 19:53, Adrian Chadd wrote: > Hi, > > I've just dumped some more locking fixes into -HEAD. I've also changed > iicbb.c a little so it has a configurable udelay. Sorry Stefan, you're > going to have to rebase your iicbb changes. :) .. and I've just fixed a locking bug, and I've introduced a new iicbb hint which overrides udelay. Next is adding some more twiddles to enable/disable iicbb debugging, iicbus debugging and log transaction failures, ACK times, etc. The read transactions all seem to fail ACK btw, so I wonder if that's the majority of the CPU time being wasted.. Adrian