linux-kernel - Re: [2.6 patch] select ATA

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Date:	Tue, 22 Apr 2008 10:35:35 -0400
From:	Mark Lord <liml@....ca>
To:	Tejun Heo <htejun@...il.com>
Cc:	Sergei Shtylyov <sshtylyov@...mvista.com>,
	Jeff Garzik <jeff@...zik.org>, Adrian Bunk <bunk@...nel.org>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [2.6 patch] select ATA_SFF

Tejun Heo wrote:
> Sergei Shtylyov wrote:
>>>>    Jeff, Tejun, what "sff" in the file name actually means? Isn't it 
>>>> strange that the drivers lacking DMA support or not really compliant 
>>>> with SFF-8038i have to link with this file?
>>
>>> Maybe it should be libata-tf and libata-bmdma, but sff (sans bmdma)
>>> and bmdma is acceptable, hopefully, right?
>>
>>    What's sff sans bmdma?
> 
> Supposed to be TF interface.  IIRC, the SFF term was first from Alan 
> although it's entirely possible that I misunderstood it and used it in 
> the wrong way.  Alan, can you please clear up the confusion?
..

SFF stands for "Small Form Factor", as in the "SFF Committee Information
Specification for Bus Master Programming Interface for IDE ATA Controllers Rev 1.0"
from May 16, 1994.

That document is basically a committee rubber-stamp of the earlier Intel
"PCI IDE Controller Specification Revision 1.0" dated 3/4/94.

Would anyone like copies ?

Cheers

 

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