From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rajat Jain Subject: Re: Re: Problem while inserting pciehp (PCI Express Hot-plug) driver Date: Thu, 28 Jul 2005 19:45:49 +0900 Message-ID: References: <20050725021747.67869.qmail@web34405.mail.mud.yahoo.com> <512afbf905072711295f87ad24@mail.gmail.com> Reply-To: Rajat Jain Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <512afbf905072711295f87ad24@mail.gmail.com> Content-Disposition: inline Sender: linux-hotplug-devel-admin@lists.sourceforge.net Errors-To: linux-hotplug-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Kristen Accardi Cc: greg@kroah.com, linux-kernel@vger.kernel.org, linux-newbie@vger.kernel.org, acpi-devel@lists.sourceforge.net, linux-hotplug-devel@lists.sourceforge.net, dkumar@noida.hcltech.com List-Id: linux-acpi@vger.kernel.org >=20 > Hi Rajat, you can learn more about the OSHP method by reading the PCI > express spec. It is used to tell an ACPI bios that the OS will be > handling the hotplug events natively. It may be that your BIOS does > not allow native hotplug for pcie, in which case you need to be using > the acpiphp driver instead of the pciehp driver. You could just try > modprobing acpiphp and see if this will handle the hotplug events. A > recent version of lspci (which understands pcie) will tell you as well > if pcie hotplug capability is supported (lspci -vv). >=20 Okay. I'm sorry but I'm not very clear with this. I'm just putting down here my understanding. So basically we have two mutually EXCLUSIVE hotplug drivers I can use for PCI Express: 1) "pciehp.ko" : We use this PCIE HP driver when our BIOS supports Native Hot-plug for PCI Express (which means that hot-plug will be handled by OS single handedly). 2) "acpiphp.ko" : We use this "generic" ACPI HP driver when BIOS allows only ITSELF to handle hot-plug events. Is my understanding correct? I would appreciate if you could help me gain a grip on this. Thanks a lot for the useful info you gave. Provided me with a new direction to work on. Regards, Rajat ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf