From: Jeff Garzik <jeff@garzik.org>
To: Mark Lord <liml@rtr.ca>
Cc: Robert Hancock <hancockrwd@gmail.com>,
ide <linux-ide@vger.kernel.org>, Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH #upstream] sata_sil24: always set protocol override for non-ATAPI data commands
Date: Sat, 22 Aug 2009 12:10:25 -0400 [thread overview]
Message-ID: <4A901871.7020206@garzik.org> (raw)
In-Reply-To: <4A900E87.5060207@rtr.ca>
On 08/22/2009 11:28 AM, Mark Lord wrote:
> Mmm.. I wonder if something like this patch might also be applicable
> to the sata_sil.c driver too?
Not AFAICT. The 3112 has a Command Protocol Table inside the chip.
Each command reads the ATA command protocol from that table. The table
is programmable (see section 10.3 of [1]), but not on a per-command
basis. The per-command PRD format is pretty much legacy IDE[2], and
nothing like the modern FIS-based controllers.
Jeff
[1] http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
[2] bmdma2 modifies the PRD format a bit, but it is not relevant to this
thread
next prev parent reply other threads:[~2009-08-22 16:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 20:11 [PATCH #upstream] sata_sil24: always set protocol override for non-ATAPI data commands Robert Hancock
2009-07-30 20:18 ` Mark Lord
2009-07-30 20:53 ` Jeff Garzik
2009-07-31 1:20 ` Tejun Heo
2009-08-22 5:57 ` Robert Hancock
2009-08-22 14:03 ` Mark Lord
2009-08-22 14:11 ` Jeff Garzik
2009-08-22 15:25 ` Mark Lord
2009-08-22 15:28 ` Mark Lord
2009-08-22 16:10 ` Jeff Garzik [this message]
2009-08-22 16:27 ` Robert Hancock
2009-08-22 16:02 ` Jeff Garzik
2009-08-22 16:30 ` Robert Hancock
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