linux-kernel - RE: [RFC PATCH] nForce4 ADMA with NCQ: It's aliiiive..

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Date:	Mon, 9 Oct 2006 23:44:35 -0700
From:	"Allen Martin" <AMartin@...dia.com>
To:	"Robert Hancock" <hancockr@...w.ca>,
	"Prakash Punnoor" <prakash@...noor.de>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>,
	<linux-ide@...r.kernel.org>, <jeff@...zik.org>
Subject: RE: [RFC PATCH] nForce4 ADMA with NCQ: It's aliiiive..

> > Unfortunately it doesn't work for me on MCP51 if I change 
> GENERIC to 
> > ADMA. So I wonder whether MCP51 has ADMA mode or what needs 
> to be done 
> > to get NCQ working. :-(
> 
> What happened when you tried it? It would be useful if you 
> could change the #undef in these lines:
> 
>   53 #undef ATA_DEBUG                /* debugging output */
>   54 #undef ATA_VERBOSE_DEBUG        /* yet more debugging output */
> 
> in include/linux/libata.h to #define and rebuild and try it 
> then, that will spew out a bunch more output and I can see if 
> any reasonable looking values are showing up at all. I was 
> capturing this output the crude way, booting with vga=6 to 
> get a smaller font and taking a picture of the screen :-) 
> Also, maybe post the lspci -v output from the SATA controller..
> 
> If that doesn't provide any insight, maybe the docs Jeff has 
> provide the answer for whether or not the MCP5x/MCP61 
> controllers have the same interface as the CK804/MCP04..

No, only CK804 and MCP04 support ADMA.  We'll be publishing some patches
for NCQ support for MCP55/MCP61 soon.
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