From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailserv2.iuinc.com (IDENT:qmailr@mailserv2.iuinc.com [206.245.164.55]) by puffin.external.hp.com (8.9.3/8.9.3) with SMTP id XAA24647 for ; Fri, 22 Sep 2000 23:30:02 -0600 Sender: rbrad@mailserv2.iuinc.com Message-ID: <39CC4001.50E72330@uswest.net> Date: Fri, 22 Sep 2000 23:30:41 -0600 From: Ryan Bradetich MIME-Version: 1.0 To: Erik Paulson , grundler@cup.hp.com CC: parisc-linux@thepuffingroup.com Subject: Re: [parisc-linux] C100 and ccio-dma References: <20000921201241.C28365@data.upl.cs.wisc.edu> Content-Type: multipart/mixed; boundary="------------DC7AC919A57FF5003A3725B8" List-ID: This is a multi-part message in MIME format. --------------DC7AC919A57FF5003A3725B8 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Erik & Grant, I think I have finally tracked this problem down... I don't think it is a bug in either the ccio-dma or the sym53c8xx driver.... I believe it is a sizing issue with the IO PDIR in the ccio-dma. I spent some time last week increasing the density of the IO PDIR by 4x ... it looks like I still have some work to do :) I increased the the IO PDIR ratio to main memory by 4x and I can successfully format a 4G partition in my C200+. (When I bumped the IO PDIR ratio by 2x, is still had problems...) Erik ... I've attached a small patch for you to try and see if it works for you. Thanks, - Ryan > Hi, > Using the CVS kernel on a C100 I'm seeing it die with an out-of-mapping > resources error from ccio-dma.c. It looks like there's been some active > development there about a week ago, but it's not helping my machine. The > quickest way for me to bring it about is to try and use mke2fs, but just > mounting the CD and running a few commands will oftentimes do the trick. > > How can I help debug this? There's really no useful information provided by > the printk now - is there some sort of debugging info I could be collecting, > or would a backtrace help? > > Thanks > > -Erik > > --------------------------------------------------------------------------- > To unsubscribe: send e-mail to parisc-linux-request@thepuffingroup.com with > `unsubscribe' as the subject. --------------DC7AC919A57FF5003A3725B8 Content-Type: text/plain; charset=us-ascii; name="ccio-dma.patch" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="ccio-dma.patch" Index: ccio-dma.c =================================================================== RCS file: /home/cvs/parisc/linux/arch/parisc/kernel/ccio-dma.c,v retrieving revision 1.10 diff -u -p -u -r1.10 ccio-dma.c --- ccio-dma.c 2000/09/15 00:57:14 1.10 +++ ccio-dma.c 2000/09/23 05:26:51 @@ -200,7 +200,7 @@ struct ccio_device { /* Ratio of Host MEM to IOV Space size */ -STATIC u_long ccio_mem_ratio = 16; +STATIC u_long ccio_mem_ratio = 4; STATIC struct ccio_device *ccio_list = NULL; /************************************************************** --------------DC7AC919A57FF5003A3725B8--