alpha/30486: AlphaServer DS10 floppy access is broken

[Sten Spans]

On Tue, 24 May 2005, Wilko Bulte wrote:

> The following reply was made to PR alpha/30486; it has been noted by GNATS.
>
> From: Wilko Bulte <wb at freebie.xs4all.nl>
> To: Sten Spans <sten at blinkenlights.nl>
> Cc: bug-followup at FreeBSD.ORG, wilko at FreeBSD.ORG
> Subject: Re: alpha/30486: AlphaServer DS10 floppy access is broken
> Date: Tue, 24 May 2005 22:20:26 +0200
>
> On Tue, May 24, 2005 at 10:19:01PM +0200, Sten Spans wrote..
> >
> > disabling dma (FDC_NODMA) recreates the RELENG_4
> > behaviour :
> >
> > deepthought# dd if=/dev/zero of=/dev/fd0 bs=1440k count=1
> > dd: /dev/fd0: Input/output error
> > 1+0 records in
> > 0+0 records out
> > 0 bytes transferred in 1.928038 secs (0 bytes/sec)
> > deepthought# fdformat /dev/fd0
> > Format 1440K floppy `/dev/fd0'? (y/n): y
> > Processing fdformat: ioctl(FD_FORM): Input/output error
> >
> > So it's either kernel crash in isadma or broken pio,
> > gotta love free choice :}
>
> A long time ago Andrew Gallatin (gallatin@) and myself tried
> to narrow it down.  ISTR Drew thought it was isadma getting something
> wrong.

I'll try to clean a few of the simple alpha pr's first
and then look into this further.

-- 
Sten Spans

"There is a crack in everything, that's how the light gets in."
Leonard Cohen - Anthem