Devices not supporting read-6....

[Jens Axboe]

On Sat, Jan 22 2000, H. Peter Anvin wrote:
> > I have been thinking about the earlier comment you made, the one
> > about providing ATAPI support through SCSI emulation purely like
> > Windows NT does (and other OS' too). Provide a nice packet layer
> > that doesn't differentiate between ATAPI and SCSI, commands
> > could be queued through SG or similar. This exact discussion
> > was raised on linux-scsi about a year ago, if I remember correctly.
> > 
> 
> Well, that's exactly what ide-scsi does, so doing that is definitely an
> option (and is currently the *only* way to do this.)  If so we should
> ditch the IDE drivers completely and do everything through ide-scsi.

Yes, and the "neutral" layer would then be the SCSI layer, which
is fine. ide-cd.* could be thrown out. The only problem I see with
that is the loss of drive work-arounds for not quite compatible
hardware.

> The other option is to make a generic /dev/hg* interface for *all*
> IDE/ATAPI devices.

That should be fairly easy, too.

-- 
*  Jens Axboe <axboe en suse.de>
*  Linux CD-ROM Maintainer
*  http://www.kernel.dk

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