From: Prakash Punnoor <prakash@punnoor.de>
To: Jeff Garzik <jeff@garzik.org>
Subject: Re: SATA status reports update
Date: Sat, 30 Sep 2006 09:26:01 +0200
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References: <451CE8EC.1020203@garzik.org> <200609291200.56308.prakash@punnoor.de> <451CEF8E.2050601@garzik.org>
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Am Freitag 29 September 2006 12:03 schrieb Jeff Garzik:
> Prakash Punnoor wrote:
> > Well, how would one debug it w/o hw docs? Or is it possible to compare
> > the patch with a working driver for another chipset?
>
> Well, it is based off of the standard ADMA[1] specification, albeit with
> modifications.  There is pdc_adma.c, which is also based off ADMA.  And
> the author (from NVIDIA) claims that the driver worked at one time, so
> maybe it is simply bit rot that broke the driver.

Well, I tried to hack the patch into 2.6.18 driver, but wasn't very=20
successful. It migt be also due to the case that I have a MCP51 chipset and=
=20
if I read the patch correctly it isn't designed  to activate ADMA on MCP51.=
=20
Do you know whether MCP51 knows ADMA? If not, how is NCQ to be activated on=
=20
MCP51? According to nvidia.com and windows user reports MCP51 does know NCQ.

Cheers,
=2D-=20
(=B0=3D                 =3D=B0)
//\ Prakash Punnoor /\\
V_/                 \_V

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