alpha/30486: AlphaServer DS10 floppy access is broken

[Marcel Moolenaar]

On Wed, May 25, 2005 at 10:06:02PM +0200, Sten Spans wrote:
> 
> I am not 100% sure yet but I think I might have found something:
> http://www.uwsg.iu.edu/hypermail/linux/alpha/9912.3/0000.html
> https://www.redhat.com/archives/axp-list/2000-January/msg00727.html

Thanks, I'll take a look at it. I don't have the hardware to test
though, so I don't know at this time how fruitful it will be that
I look at it.

> But now, with a fresh new, zero'd floppy it seems to work sometimes:
> 
> deepthought# dd if=/dev/zero of=/dev/fd0 count=1
> 1+0 records in
> 1+0 records out
> 512 bytes transferred in 0.177883 secs (2878 bytes/sec)
> deepthought# fdformat /dev/fd0
> Format 1440K floppy `/dev/fd0'? (y/n): y
> Processing E---------------------------------------
> ^C
> deepthought# dd if=/dev/zero of=/dev/fd0 count=1
> dd: /dev/fd0: Input/output error
> 1+0 records in
> 0+0 records out

A failed format attempt may render the disk useless. The I/O error
may not be related to the DMA problem that I fixed, but to a bad
floppy as the result of the broken fdformat.

> On another note, the busdma fix might fix some of the other
> reported crashes for RELENG5, I'll try digging up a soundcard.

That would be great. Thanks,

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel at xcllnt.net