From owner-freebsd-hackers@FreeBSD.ORG Sun Nov 6 16:46:20 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org 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 0C7AA16A421 for ; Sun, 6 Nov 2005 16:46:20 +0000 (GMT) (envelope-from fierykylin@gmail.com) Received: from xproxy.gmail.com (xproxy.gmail.com [66.249.82.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3701743D49 for ; Sun, 6 Nov 2005 16:46:16 +0000 (GMT) (envelope-from fierykylin@gmail.com) Received: by xproxy.gmail.com with SMTP id t14so239313wxc for ; Sun, 06 Nov 2005 08:46:16 -0800 (PST) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=bSYBftODAOYsynFxmqVEOam84cSPRRuefOfTYgy/Qa+4p74GX68NBUUqJlcXgMvWG/xd57NjkF7cC3BjhKTCxVE9WWtmOkRmHuziUQp5Hk4SP/lkkk4rY5HL/9vw5XeDjDDaFIkYfNL0gJsNy6Vb+yoKmCA+GaG8M8JS+NSRib0= Received: by 10.70.6.2 with SMTP id 2mr4048791wxf; Sun, 06 Nov 2005 08:46:16 -0800 (PST) Received: by 10.70.18.16 with HTTP; Sun, 6 Nov 2005 08:46:16 -0800 (PST) Message-ID: <87ab37ab0511060846v203a266dtf6058ebbd4afcc90@mail.gmail.com> Date: Mon, 7 Nov 2005 00:46:16 +0800 From: kylin To: John Baldwin , "M. Warner Losh" , "freebsd-hackers@freebsd.org" In-Reply-To: <200511061007.03634.jhb@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <87ab37ab0511032030o134b9316j83295dd303e4e44b@mail.gmail.com> <20051105.140416.69987626.imp@bsdimp.com> <87ab37ab0511060314m2eef7458vefc4f5f657ea6501@mail.gmail.com> <200511061007.03634.jhb@FreeBSD.org> Cc: Subject: Re: misc questions about the device&driver arch 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: Sun, 06 Nov 2005 16:46:20 -0000 On 11/6/05, John Baldwin wrote: > On Sunday 06 November 2005 06:14 am, kylin wrote: > > On 11/6/05, M. Warner Losh wrote: > > > In message: <87ab37ab0511032030o134b9316j83295dd303e4e44b@mail.gmail.= com> > > > > > > kylin writes: > > > : /////////////// > > > : pci bridge dynamic resize > > > : ///////////// > > > : it seems that the device arch of freebsd is similar to what is reve= aled > > > : in window OS. i have read the pcie hotplug tps of windows longhorn = ,it > > > : is said that with some hardware mechanisms the pci bridge driver ca= n do > > > : global pci resource window reconfiguration.so good to the hotplugin= pci > > > : device for it avoid prelocating resource for the device . > > > : i wonder ,if the mem /io/irq reconfiguration possible under freebsd= .:) > > > : 1 > > > > > > Yes. Cardbus does it all the time. However, there's no pcie hot-plu= g > > > support yet, so the process for kicking off configuration of the new > > > device doesn't happen. > > > > > > Warner > > > > sorry for my poor grammar ,i think i confused the public:) i will make > > myself clear with the words below about the PCI Multi-level Rebalance > > > > PCI Multi-level Rebalance in Windows Longhorn > > Updated: November 25, 2003 > > No, FreeBSD doesn't currently do what this decribes yet. It would be pos= sible > to do it by adding a new device_pause() method that drivers would be requ= ired > to implement while the resources were shuffled around though and possibly= a > device_unpause() method so that they could update their state if their > resources were changed while the device was paused. > > -- > John Baldwin <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve" =3D http://www.FreeBSD.org > To be or Not to be ,really a question ,may be the change is so huge that a new branch is suitable -- we who r about to die,salute u!