From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Zick" Subject: Re: [parisc-linux] Re: CCIO dma io_command and related io_tlb format questions. Date: Sat, 14 Oct 2006 11:40:40 -0500 Message-ID: <200610141140.40487.mszick@morethan.org> References: <4530DF1F.5060601@scarlet.be> <20061014141147.GM11633@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: parisc-linux@lists.parisc-linux.org Return-Path: In-Reply-To: <20061014141147.GM11633@parisc-linux.org> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Sat October 14 2006 09:11, Matthew Wilcox wrote: > On Sat, Oct 14, 2006 at 12:59:11PM +0000, Joel Soete wrote: > > but yes that's the primary question and: > > * I encountered pbs with ncr53c720 and core io ncr53c710 > > (different pb with each hba but same one-to-one on d380 and c110), > > * but no pb with same disk (and its scsi chain: cable + terminator) > > with ncr53c710 (behind dino) on a b180, > > so > > * no hw pb with disk, > > * no sw pb with nc53c710 Jame's driver, > > (even thought less sure, as make me noticed Mike: > > on b180, 53c710 is behind dino i.e. gsc pci bus bridge, > > right? > > on c110 and d380, this 53c710 is behind LASI (afaik just a > > vlsi assembly and no bus bridge) > > so could be also a pb with 53c710 when married with gsc?) > > You should never listen to Zick. More from the least trusted source of information: The C710 designed into the LASI chip operates from a fixed frequency clock of 40Mhz. Ref: http://www.hpl.hp.com/hpjournal/95apr/apr95a4.pdf Page: 3, Section: Phase-Locked Loop Clock Generators, Paragraph: 1 All K-class systems have at least 1 HP-HSC bus, it runs at 32Mhz. In addition the K-400 and K-410 may have an additional HP-HSC bus which runs at 40Mhz. Ref: http://www.hpl.hp.com/hpjournal/96feb/feb96a1.pdf Page: 6, Section: I/O Expansion, Paragraph: 1 Mike _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux