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From: Mark Lord <liml@rtr.ca>
To: Robert Hancock <hancockr@shaw.ca>
Cc: ltuikov@yahoo.com, linux-arch@vger.kernel.org,
	ide <linux-ide@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-scsi@vger.kernel.org
Subject: Re: DMA mapping on SCSI device?
Date: Wed, 30 Jan 2008 12:00:58 -0500	[thread overview]
Message-ID: <47A0AD4A.20109@rtr.ca> (raw)
In-Reply-To: <47A0AC33.1060504@rtr.ca>

Mark Lord wrote:
> ..
> Commands which were not ADMA compatible (eg. MODE_SENSE, 
> TEST_UNIT_READY, ..)
> were simply handled with PIO (in the driver) rather than any form of DMA,
> which is okay because those commands are relatively infrequent.
..

A slight correction there:  TEST_UNIT_READY was fine in ADMA mode as well.

Cheers

  reply	other threads:[~2008-01-30 17:00 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-29  0:08 DMA mapping on SCSI device? Robert Hancock
2008-01-29  3:21 ` Grant Grundler
2008-01-29  3:37 ` Matthew Wilcox
2008-01-29  4:28 ` Andi Kleen
2008-01-29 15:33   ` James Bottomley
2008-01-29 22:23   ` Luben Tuikov
2008-01-29 22:09 ` Luben Tuikov
2008-01-30  2:00   ` Robert Hancock
2008-01-30 16:56     ` Mark Lord
2008-01-30 17:00       ` Mark Lord [this message]
2008-01-31  0:09       ` Robert Hancock
2008-01-31  5:01   ` Matthew Wilcox

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