From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Grundler Date: Fri, 16 Apr 2004 23:39:44 +0000 Subject: Re: [Pcihpd-discuss] [RFC] New sysfs tree for hotplug Message-Id: <20040416233944.GF24556@cup.hp.com> List-Id: References: <20040415170939.0ff62618.tokunaga.keiich@jp.fujitsu.com> <20040416223436.GB21701@kroah.com> In-Reply-To: <20040416223436.GB21701@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Greg KH Cc: Keiichiro Tokunaga , lhcs-devel@lists.sourceforge.net, lhms-devel@lists.sourceforge.net, linux-hotplug-devel@lists.sourceforge.net, pcihpd-discuss@lists.sourceforge.net, lhns-devel@lists.sourceforge.net, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, acpi-largesys-devel@lists.sourceforge.net On Fri, Apr 16, 2004 at 03:34:36PM -0700, Greg KH wrote: > > Recent large machines have many PCI devices and some boards that > > contain devices (e.g. CPU, memory, and/or I/O devices). A certain PCI > > device (PCI1) might be connected with other one (PCI2), which means that > > there is a dependency between PCI1 and PCI2. > > You have this today? I interpreted his comments to mean PCI-PCI Bridges. eg something like a 4-port NIC which usually has a PCI-PCI bridge to "isolate" multiple PCI devices (NICs): +-[60]---01.0-[61]--+-04.0 Digital Equipment Corporation DECchip 21142/43 | +-05.0 Digital Equipment Corporation DECchip 21142/43 | +-06.0 Digital Equipment Corporation DECchip 21142/43 | \-07.0 Digital Equipment Corporation DECchip 21142/43 ... I thought this was already handled though so I may be misunderstanding. Keiichiro, an example would be very helpful in understanding. ... > Hm, no. What about usb, firewire, scsi and any other future bus that > can be "hotpluggable". The kernel doesn't treat them differently, and > we shouldn't either. SCSI has a heirarchy as well. Ie LUNs can be removed without removing the target (RAID controllers). Normal JBOD use equates LUNs and targets. grant ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id70&alloc_id638&op=click _______________________________________________ Linux-hotplug-devel mailing list http://linux-hotplug.sourceforge.net Linux-hotplug-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel