From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 25 07:58:36 2010 Return-Path: Delivered-To: freebsd-hackers@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8C0DD106564A; Wed, 25 Aug 2010 07:58:36 +0000 (UTC) (envelope-from ray@dlink.ua) Received: from dlink.ua (smtp.dlink.ua [193.138.187.146]) by mx1.freebsd.org (Postfix) with ESMTP id 1C52C8FC19; Wed, 25 Aug 2010 07:58:35 +0000 (UTC) Received: from gw ([192.168.10.10] helo=terran) by dlink.ua with esmtpsa (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1OoAsT-0008J2-Oc; Wed, 25 Aug 2010 10:58:33 +0300 Date: Wed, 25 Aug 2010 10:59:08 +0300 From: Alexandr Rybalko To: "M. Warner Losh" Message-Id: <20100825105908.c8b626fd.ray@dlink.ua> In-Reply-To: <20100823.221259.904309299051719466.imp@bsdimp.com> References: <20100819153805.7d60302e.ray@dlink.ua> <201008190918.46947.jhb@freebsd.org> <20100819170643.38362078.ray@dlink.ua> <20100823.221259.904309299051719466.imp@bsdimp.com> Organization: D-Link X-Mailer: Sylpheed 2.7.1 (GTK+ 2.20.1; i386-portbld-freebsd8.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: freebsd-hackers@FreeBSD.org, jhb@FreeBSD.org Subject: Re: Modules and Buses X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Aug 2010 07:58:36 -0000 On Mon, 23 Aug 2010 22:12:59 -0600 (MDT) "M. Warner Losh" wrote: >> In message: <20100819170643.38362078.ray@dlink.ua> >> Alexandr Rybalko writes: >> : On Thu, 19 Aug 2010 09:18:46 -0400 >> : John Baldwin wrote: >> : >> : >> On Thursday, August 19, 2010 8:38:05 am Alexandr Rybalko wrote: >> : >> > Hi all, >> : >> > >> : >> > Can someone say, how `make` in sys/modules dir can obtain available buses. >> : >> > I try to make clean version of bfe, that can be for PCI bus or can be part >> : >> of SoC (like BCM5354) on SSB bus. >> : >> > So for proper module building I need to know what bus interface I must build >> : >> if_bfe_pci.c, or if_bfe_siba.c, or both? >> : >> >> : >> You can always include both buses. If a bus driver isn't present in the >> : >> kernel the attachment will just never be invoked. >> : >> : I was afraid of such response. Now I have to rewrite siba implementation to newbus :) >> : Thanks you for answer! >> >> In the module building system (modules built with sys/modules >> Makefiles), we generally include all relevant busses. So, for i386 we >> include EISA front ends for some devices, but omit that on amd64. For >> siba, you'd only include it on mips, since that's the only platform >> where this would be relevant (I know broadcom wireless drivers are >> implemented via a pci <-> siba bridge, but that's a really special >> case). >> >> Check out sys/modules/ep for an example from the mists of history.. >> >> Warner Thanks you Warner, I believe Broadcom wifi cards not last instance of Broadcom devices with PCI-to-SSB bridge. Since this is modular platform that can join multiple already existence chips onto biggest chip. And SSB is spacial case of OCP bus, who can be used not only for MIPS periphery, but ARM too. So I think I should implement the SSB as a full functional bus. Thanks again. -- Alexandr Rybalko aka Alex RAY