From owner-freebsd-acpi@FreeBSD.ORG Sat Jul 14 13:02:14 2007 Return-Path: X-Original-To: acpi@freebsd.org Delivered-To: freebsd-acpi@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 3FB1D16A400 for ; Sat, 14 Jul 2007 13:02:14 +0000 (UTC) (envelope-from smithi@nimnet.asn.au) Received: from gaia.nimnet.asn.au (nimbin.lnk.telstra.net [139.130.45.143]) by mx1.freebsd.org (Postfix) with ESMTP id BE4CC13C481 for ; Sat, 14 Jul 2007 13:02:12 +0000 (UTC) (envelope-from smithi@nimnet.asn.au) Received: from localhost (smithi@localhost) by gaia.nimnet.asn.au (8.8.8/8.8.8R1.5) with SMTP id XAA15279; Sat, 14 Jul 2007 23:01:58 +1000 (EST) (envelope-from smithi@nimnet.asn.au) Date: Sat, 14 Jul 2007 23:01:57 +1000 (EST) From: Ian Smith To: Nate Lawson In-Reply-To: <46979A40.8040909@root.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: acpi@freebsd.org Subject: Re: ACPI summary available X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Jul 2007 13:02:14 -0000 On Fri, 13 Jul 2007, Nate Lawson wrote: > Ian Smith wrote: > > On Thu, 12 Jul 2007, Nate Lawson wrote: > > > Kevin Oberman wrote: > > > > Thanks to a note on /., I found what looks to be a very nice summary of > > > > ACPI and its myriad of states (C, D, G, S, and P). While it does not go > > > > into ASL, the ACPI tables, or things of that sort, it is probably a > > > > good starting place for those interested in just what ACPI is all about. > > > > It filled in some gaps (especially about D and lower C states) for me. > > > > > > > > One small request...I am far from an ACPI expert and there may be > > > > serious flaws in the article that I am unaware of. If so, please let me > > > > know so I don't recommend it more widely. IF it looks good, I plan to > > > > post a message about it to mobile@. > > > > > > > > http://www.techarp.com/showarticle.aspx?artno=420 > > > > > > It's ok. It doesn't include much real knowledge such as the fact that > > > S2 has seldom been observed on a real system. It includes very > > > processor-rev specific stuff such as which P states are supported on > > > which CPUs. The diagram leaves out the embedded controller completely. [..] > > Short of your shelf of books, deep specs and the code, can you suggest > > any other useful online ACPI in-a-nutshell references for neophytes? > > Handbook > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html > http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-overview.html Indeed. I'd forgotten that acpi-debug has good reference links, but not: > Usenix paper > http://www.usenix.org/events/usenix02/tech/freenix/full_papers/watanabe/watanabe_html/index.html Thanks for this Nate .. on a quick skim so far it covers much of the background and history I lack. Keep me off the streets for a while. Thanks also to Alex. Cheers, Ian