[parisc-linux] NICs on EISA bus...

[Michael S. Zick]

On Fri October 13 2006 12:08, Matthew Wilcox wrote:
> On Wed, Oct 11, 2006 at 02:19:20PM -0400, James Love wrote:
> > This particular 715 appears to have a Scorpio EISA bus adapter.  I see
> > no mention of WAX as a device in the boot logs (excerpt appended below).
> 
> The EISA bit of Wax and Mongoose are essentially the same.
> 
> >  Is the Scorpio a good or a bad thing in regards to getting this bus
> > working?  I also have a 755 with a Cobra EISA BA, any idea whether that
> > will work either?
> 
> That's also a Mongoose.
> 
> Interrupts probably work; I haven't tried them recently, but they should.
> Port IO and Memory IO accesses to the chip from the CPU should work.
> DMA from the chip to host RAM will not work. 

The machine I am setting up to test changes in the ncr-risc code for
the scsi controllers also has the Cobra EISA BA.

Will look at the EISA DMA situation, but it will be a matter of luck
not skill or knowledge if I can make it work.

I do recall that getting the contents of the cache and the memory to
be the same has to be done in software and it did not sound easy the
first time I read about it.

Mike

> I've read the chapter in 
> the ERS which describes how to make it work; unfortunately, I don't
> remember it in enough detail, and don't have that document any more.
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