From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Hancock Subject: Re: [Regression] r8169: enable 64-bit DMA by default for PCI Express devices (v2) Date: Sat, 27 Mar 2010 11:46:12 -0600 Message-ID: <4BAE4464.9060909@gmail.com> References: <20100315150806.GA15354@Dublin.logfs.org> <20100315151041.GA15667@Dublin.logfs.org> <20100315.115748.13754030.davem@davemloft.net> <51f3faa71003151628g5edc4d7av8916ac76cb337bfe@mail.gmail.com> <20100316083501.GA3489@Dublin.logfs.org> <51f3faa71003161630g69160ea9tc1a2d448682632e5@mail.gmail.com> <51f3faa71003251756h17374375yd3a5d2acee2ffab9@mail.gmail.com> <20100326091234.GA11959@Dublin.logfs.org> <4BAD65A0.7090309@gmail.com> <20100327063838.GB11959@Dublin.logfs.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: David Miller , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, romieu@fr.zoreil.com To: =?UTF-8?B?77+9IEVuZ2Vs?= Return-path: In-Reply-To: <20100327063838.GB11959@Dublin.logfs.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 03/27/2010 12:38 AM, =EF=BF=BD Engel wrote: > On Fri, 26 March 2010 19:55:44 -0600, Robert Hancock wrote: >> >> Well, that one's 36 bits, but it's unclear whether that driver would >> actually be likely to access anything over 4GB. It's possible that >> there's just some general problem with 64-bit DMA on that machine. > > That may very well be. I've had trouble using a PCIe card in that > machine as well. "Solution" was to buy a different computer. Sad, I > know, but not my money. Hm, do you recall/have the details of what happened with the other card= ? It's possible this is some general problem with that machine/motherboar= d=20 and not actually an issue with what the driver is doing. What kind of=20 board is that? > >> The fact that even stuff like lspci and MII is breaking seems odd, >> though. It could be that model of card doesn't like the PCIDAC regis= ter >> bit being set (maybe it means something different on that model, or >> something). >> >> I suppose a publicly accessible datasheet for these chips is too muc= h to >> hope for? > > Which chips? > > J=EF=BF=BDrn > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >