From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uli Luckas Date: Tue, 08 Jun 2004 16:12:42 +0000 Subject: Re: sun4c driver/dma problems Message-Id: <200406081812.42485.luckas@musoft.de> List-Id: References: <200406020818.13705.luckas@musoft.de> In-Reply-To: <200406020818.13705.luckas@musoft.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sparclinux@vger.kernel.org Am Dienstag, 8. Juni 2004 17:53 schrieb Keith M Wesolowski: > On Tue, Jun 08, 2004 at 09:22:44AM +0200, Uli Luckas wrote: > > the above cited DMA message seems to be the root of the driver problems. > > From the 2.2.26 kernel I know it should read: > > dma0: Revision 1 > > > > So what can I do to help, getting this fixed? Who works on this code? > > I already know, it's not only the version detection. Defining a new > > version 70000000 "Revision 1 broken" and initialising it just as a > > "Revision 1" works around the above message, but all the device drivers > > report all kind of DMA related problems later on and of course don't > > work. > > Reading your messages, I'm uncertain exactly how well 2.2.26 works. > Can you please clarify? If it's perfect, then I may invest a few > hours trying to fix this for you in 2.6. If there's no known-working > kernel, it's unlikely that it ever will be fixed. Hi Keith, thanks for your reply. The machine works nicely and stable with 2.2 kernels, nfs root and nbd swap. With 2.2 kernels I can also access the local SCSI cdrom and hard drives which host an old SunOS 4.1.3 installation. Please let me know, if you need more information. Uli