From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 20 00:37:15 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4B1E716A4C0 for ; Wed, 20 Aug 2003 00:37:15 -0700 (PDT) Received: from cadillac.meteo.fr (cadillac.meteo.fr [137.129.1.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id DDFEE43FA3 for ; Wed, 20 Aug 2003 00:37:12 -0700 (PDT) (envelope-from igor.pokrovsky@cnrm.meteo.fr) Received: from cti825.cnrm.meteo.fr (localhost.meteo.fr [127.0.0.1]) HAA18802 for ; Wed, 20 Aug 2003 07:36:54 GMT Received: from xdata.cnrm.meteo.fr (xdata.cnrm.meteo.fr [137.129.150.2]) JAA18418; Wed, 20 Aug 2003 09:36:52 +0200 (METDST) Received: from exmatis1.cnrm.meteo.fr (exmatis1.cnrm.meteo.fr [137.129.157.46]) by xdata.cnrm.meteo.fr with ESMTP (8.9.3 (PHNE_24419)/8.7.1) id JAA20117; Wed, 20 Aug 2003 09:37:54 +0200 (METDST) Received: from exmatis1.cnrm.meteo.fr (localhost [127.0.0.1]) h7K7ZauX000393; Wed, 20 Aug 2003 09:35:36 +0200 (CEST) (envelope-from pokrovsi@exmatis1.cnrm.meteo.fr) Received: (from pokrovsi@localhost) by exmatis1.cnrm.meteo.fr (8.12.9/8.12.9/Submit) id h7K7ZaUi000392; Wed, 20 Aug 2003 09:35:36 +0200 (CEST) Date: Wed, 20 Aug 2003 09:35:36 +0200 From: Igor Pokrovsky To: Igor Pokrovsky , Bruce M Simpson , freebsd-hackers@freebsd.org Message-ID: <20030820073535.GA331@exmatis1.cnrm.meteo.fr> Mail-Followup-To: Igor Pokrovsky , Bruce M Simpson , freebsd-hackers@freebsd.org References: <20030818124841.GA35843@exmatis1.cnrm.meteo.fr> <20030818141217.GD21219@spc.org> <20030818141852.GA40572@exmatis1.cnrm.meteo.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030818141852.GA40572@exmatis1.cnrm.meteo.fr> User-Agent: Mutt/1.4.1i X-Accept-Language: ru X-AntiVirus: scanned for viruses by AMaViS 0.2.1 (cti825/CNRM) Organization: METEO FRANCE(CNRM) Subject: Re: PCI quirk X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Igor Pokrovsky List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Aug 2003 07:37:15 -0000 On Mon, Aug 18, 2003 at 04:18:52PM +0200, Igor Pokrovsky wrote: > On Mon, Aug 18, 2003 at 03:12:17PM +0100, Bruce M Simpson wrote: > > On Mon, Aug 18, 2003 at 02:48:41PM +0200, Igor Pokrovsky wrote: > > > Hello all, > > > > > > I'd like to add a PCI quirk, which will enable SMBus on boot > > > (it gets disabled by BIOS). What is the best place in kernel > > > to do this? I looked through PCI sources, but haven't found > > > any suitable place for that (not like in USB case). > > > > This sounds like perhaps you need to add a patch tied to your southbridge. > > > > Generally the SMBus interface hangs off the southbridge or a power management > > controller. But you haven't told us which one, so any advice we may be able > > to give you is largely academic. > > > > Do you know the PCI ID of the *function* that implements the SMBus interface > > in your system? If so, grep through the kernel source and find which driver > > is attached to it, if any. If not, pciconf -lv is a good place to start. > > Yes, I have all information. > > I need to do the similar thing in kernel: > pciconf -w -h pci0:31:0 0xf2 0 > > Generally according to datashit I have to turn off zero and third bits of 0xf2, > but in fact zeroing whole 2 bytes of 0xf2 works also. And I'm searching for a > right place to add this. Just add-on to my last post. I found probably correct way to enable SMBus, but I still don't know where to add the following code: pcicfgregs p = {-1, 0, 31, 0}; pci_cfgwrite(&probe, 0xf2, 0, 2); Is there any gurus around? -ip -- "It's Like This" Even the samurai have teddy bears, and even the teddy bears get drunk.