From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, Alexander Graf <agraf@suse.de>,
Bique Alexandre <alexandre.bique@citrix.com>
Subject: Re: [Qemu-devel] [PATCH] ATAPI pass through
Date: Wed, 1 Jul 2009 10:36:01 +0100 [thread overview]
Message-ID: <200907011036.02874.paul@codesourcery.com> (raw)
In-Reply-To: <0B4B4929-9F33-4F87-A1D3-16D56661E84B@suse.de>
> I don't really know what became of the SCSI layer since I haven't
> looked at it for quite some time now.
> But last time I checked, we had a cdrom emulation in scsi-disk.c _and_
> in ide.c.
IIRC ATAPI and SCSI are not the same. They provide very similar functionality,
however the actual commands are different.
While it is possible to connect SATA drives to a SAS HBA, I believe this is
done by tunneling IDE/ATAPI commands, rather then using native SCSI commands.
The common bits of the cdrom emulation are already broken out into cdrom.c.
USB Mass Storage can (in theory) use both ATAPI and SCSI devices. Currently we
only implement SCSI.
Paul
next prev parent reply other threads:[~2009-07-01 9:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-30 15:34 [Qemu-devel] [PATCH] ATAPI pass through Bique Alexandre
2009-06-30 16:26 ` Kevin Wolf
2009-06-30 18:10 ` Bique Alexandre
2009-07-01 6:57 ` Alexander Graf
2009-07-01 8:44 ` Christoph Hellwig
2009-07-01 9:36 ` Paul Brook [this message]
2009-07-01 11:29 ` Christoph Hellwig
2009-06-30 17:01 ` Christoph Hellwig
2009-06-30 17:55 ` Bique Alexandre
2009-07-01 8:43 ` Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200907011036.02874.paul@codesourcery.com \
--to=paul@codesourcery.com \
--cc=agraf@suse.de \
--cc=alexandre.bique@citrix.com \
--cc=kwolf@redhat.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).