[parisc-linux] Fast-Wide Diff. SCSI on a 735

Ryan Bradetich rbradetich@uswest.net
02 Jun 2002 19:22:47 -0600

I am still interested in working on this.  I have some preliminary
patches that I could update to CVS head, but they really do not get
very far.  During OLS I/We plan on working on this driver some more.  I 
believe the victim system is already present in Ottawa now :)


- Ryan

On Thu, 2002-05-30 at 02:14, Richard Hirst wrote:
> On Wed, May 29, 2002 at 11:20:16PM +0200, Andy Walker wrote:
> > Hi folks,
> > 
> > Just picked up a free 735/99 today, so suddenly I've become interested
> > in the status of the Outfield 53c720 driver. Has there been any progress
> > or is there just no information available? I'd be happy to test patches -
> > or even dive into the code myself, but without docs that sounds a little
> > pointless.
> Specs for Outfield are available now, look for hardball_ers.pdf on the
> web site.
> Other 53c720 interfaces (e.g. bluefish) are supported via the
> ncr53c8xx.c driver, but that doesn't work for outfield because the 735
> is not cache coherent.  My next idea was to add basic 53c720 support to
> the 53c700 driver, as that works older hardware.  Ryan was interested in
> looking at that a while back, but I don't know what happened.  My excuse
> is that I don't have 735 h/w to test on so it is no fun - but that's a
> poor excuse really as I could use my bluefish card to get 53c700 working
> with 53c720.
> 53c700.c would drive the 53c720 chip in 53c700 mode, so would be
> relatively low performance (more interrupts than you would need if you
> made the most of the 53c720 features), and it would be 8 bit only.
> Those issues could perhaps be fixed in time, and it would be better than
> nothing, anyway.
> Richard
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