From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rajat Jain Subject: Re: How to change PCI Configuration space? Date: Wed, 31 Aug 2005 10:05:39 +0900 Message-ID: References: <431487C2.6050107@gelm.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: <431487C2.6050107@gelm.net> Content-Disposition: inline Sender: linux-newbie-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii" To: chuck@gelm.net Cc: linux-newbie@vger.kernel.org On 8/31/05, chuck gelm wrote: > Rajat Jain wrote: > > Hi List, > > > > I want to change the PCI Configuration space of a particular device in > > my system. I am trying to use the "pcitweak" utility to do so, but am > > not suceeding. I would appreciate if some body could provide me any > > pointers in how to do so. > > > > In this case, I want to change the value at offset 64: > > > > $ pcitweak -r 5:9:1 64 > > 0x01000001 //original value > > > > $ pcitweak -w 5:9:1 64 0x02000002 //new value > > > > $ pcitweak -r 5:9:1 64 > > 0x01000001 //no change? > > > > TIA, > > > > Rajat Jain > > Dear Rajat Jain: > > 'man pcitweak' indicates that it requires root privileges. > the '$' prompt in your console indicates 'user' privileges. > My 'root' prompt is a '#'. > I suggest that you do not have 'root' privileges when > executing a '-w' (write) command. > > HTH, Chuck > > "Pcitweak is a utility that can be used to examine or > change registers in the PCI configuration space. On most > platfoms pcitweak can only be run by the root user." > Un ... I'm sorry ... I put that "$" prompt manually here in this mail. I AM the root and working on the "#" prompt. I would appreciate if somebody can tell me any other commands than "pcitweak" and "setpci" to change PCI configuration space. Thanks & Regards, Rajat Jain - To unsubscribe from this list: send the line "unsubscribe linux-newbie" 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.linux-learn.org/faqs