linux-kernel - Re: [PATCH] sata_sil: Greatly improve DMA support

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Message-ID: <464F6BB1.9050609@garzik.org>
Date:	Sat, 19 May 2007 17:27:13 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Robert Hancock <hancockr@...w.ca>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH] sata_sil: Greatly improve DMA support

Robert Hancock wrote:
> Jeff Garzik wrote:
>> Since Alan expressed a desire to see Large Block Transfer (LBT) support
>> in pata_sil680, I though I would re-post my patch for adding LBT support
>> to sata_sil.
>>
>> Silicon Image's Large Block Transfer (LBT) support is a vendor-specific
>> DMA scatter/gather engine, which enables 64-bit DMA addresses (where
>> supported by platform) and eliminates the annoying 64k DMA boundary
>> found in legacy PCI IDE BMDMA engines.
> 
> Looks like it doesn't allow 64-bit DMA addresses, it only gets rid of 
> the 64K boundary limitation.

rotfl.  Boy am I dumb.  I -thought- my patch, written months ago, 
included that bit.  But obviously it does not.  Let's add that...

	Jeff



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