Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261292AbTFJSOn (ORCPT ); Tue, 10 Jun 2003 14:14:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261845AbTFJSOn (ORCPT ); Tue, 10 Jun 2003 14:14:43 -0400 Received: from 34.mufa.noln.chcgil24.dsl.att.net ([12.100.181.34]:2031 "EHLO tabby.cats.internal") by vger.kernel.org with ESMTP id S261292AbTFJSOj (ORCPT ); Tue, 10 Jun 2003 14:14:39 -0400 Content-Type: text/plain; charset=US-ASCII From: Jesse Pollard To: Pavel Machek , Patrick Mochel Subject: Re: [RFC] New system device API Date: Tue, 10 Jun 2003 13:27:54 -0500 X-Mailer: KMail [version 1.2] Cc: Pavel Machek , linux-kernel@vger.kernel.org References: <20030609210706.GA508@elf.ucw.cz> <20030609213247.GC508@elf.ucw.cz> In-Reply-To: <20030609213247.GC508@elf.ucw.cz> MIME-Version: 1.0 Message-Id: <03061013275402.06462@tabby> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1460 Lines: 35 On Monday 09 June 2003 16:32, Pavel Machek wrote: > Hi! > > > > > So? A keyboard controller is not classified as a system device. > > > > > > Its not on pci, I guess it would end up as a system device... > > > > Huh? Since when is everything that's not PCI a system device? Please read > > the documentation, esp. WRT system and platform devices. > > Oh and btw keyboard controller is used for rebooting machine. Do you > still say it is not system device? > Pavel And here I thought it was the reset line on the bus... :-) There are lots of ways to do that without involving the keyboard. The old way was just to wire the serial break signal from the UART to the reset line... Would that suddenly make the serial interfaces system devices? What about that "wake on lan" business... does that make the network card a "system device"? The only things I think of as "system device" is the CPU, the memory bus, and sometimes a thing called a system controller/bus arbiter. The memory bus should provide access to any ROM needed for initial program storage. Outside of that, everything is a peripheral, and should be treated as such, even though the memory management unit is considered part of the CPU. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/