linux-kernel - RE: sata_nv + ADMA + Samsung disk problem

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Message-ID: <F72FA20C31DD4F4C997B91C5B3690A0950557D@hqemmail07.nvidia.com>
Date:	Wed, 2 Jan 2008 15:23:26 -0800
From:	"Allen Martin" <AMartin@...dia.com>
To:	"Jeff Garzik" <jeff@...zik.org>
Cc:	"Robert Hancock" <hancockr@...w.ca>,
	"Tejun Heo" <htejun@...il.com>, "Gabor Gombas" <gombasg@...aki.hu>,
	<linux-kernel@...r.kernel.org>, <linux-ide@...r.kernel.org>,
	"Kuan Luo" <kluo@...dia.com>, "Peer Chen" <pchen@...dia.com>
Subject: RE: sata_nv + ADMA + Samsung disk problem

> The software definitely provides that guarantee for all NCQ-capable 
> controllers.
> 

Well if that's not it, it must be some problem entering ADMA legacy
mode.  Here's what the Windows driver does:


ADMACtrl.aGO = 0
ADMACtrl.aEIEN = 0
poll {
  until ADMAStatus.aLGCY = 1 || timeout
}
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