From: Jeff Garzik <jeff@garzik.org>
To: Mark Lord <liml@rtr.ca>
Cc: Tejun Heo <htejun@gmail.com>,
Linux IDE <linux-ide@vger.kernel.org>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH] RESEND: SCSI, libata: add support for ATA_16 commands to libata ATAPI devices
Date: Thu, 01 Feb 2007 03:26:12 -0500 [thread overview]
Message-ID: <45C1A424.5040805@garzik.org> (raw)
In-Reply-To: <45C1377F.6070001@rtr.ca>
Mark Lord wrote:
> For example, I think all existing ATAPI drives only speak 12-byte packet
> protocols, and so if we tell SCSI we're good for 16-byte, then won't the
> SCSI layer suddenly start sending us READ_16 and the like?
Speaking strictly about the device, IDENTIFY PACKET DEVICE data page
tells us whether the device supports 12-byte or 16-byte CDBs. No need
to guess.
Some host controllers only support 12-byte, but I think that most should
support 16-byte.
Jeff
next prev parent reply other threads:[~2007-02-01 8:26 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-03 0:35 [PATCH] SCSI, libata: add support for ATA_16 commands to libata ATAPI devices Mark Lord
2007-01-03 1:40 ` James Bottomley
2007-01-03 5:42 ` Mark Lord
2007-01-03 15:31 ` James Bottomley
2007-01-03 15:45 ` Jeff Garzik
2007-01-03 15:57 ` James Bottomley
2007-01-03 17:58 ` Mark Lord
2007-01-03 19:39 ` Douglas Gilbert
2007-01-03 21:41 ` James Bottomley
2007-01-03 23:57 ` Mark Lord
2007-01-04 15:09 ` Jens Axboe
2007-01-04 15:29 ` Mark Lord
2007-01-04 15:51 ` Jens Axboe
2007-01-08 5:00 ` Luben Tuikov
[not found] ` <200701311346.26644.liml@rtr.ca>
2007-02-01 0:33 ` [PATCH] RESEND: " Tejun Heo
2007-02-01 0:42 ` Mark Lord
2007-02-01 0:48 ` James Bottomley
2007-02-01 0:53 ` Mark Lord
2007-02-01 0:48 ` Tejun Heo
2007-02-01 1:01 ` Mark Lord
2007-02-01 8:30 ` Jeff Garzik
2007-02-01 8:28 ` Jeff Garzik
2007-02-01 8:43 ` Tejun Heo
2007-02-01 9:54 ` Jeff Garzik
2007-02-01 15:09 ` James Bottomley
2007-02-01 15:15 ` Jeff Garzik
2007-02-01 20:21 ` Douglas Gilbert
2007-02-01 20:30 ` Jeff Garzik
2007-02-02 9:11 ` Christoph Hellwig
2007-02-01 8:26 ` Jeff Garzik [this message]
2007-02-01 8:35 ` Tejun Heo
2007-02-01 9:52 ` Jeff Garzik
2007-02-01 0:44 ` James Bottomley
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