From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthieu CASTET <matthieu.castet@parrot.com>
Subject: Re: ata_piix 2.6.25 sata failure
Date: Thu, 15 May 2008 09:41:29 +0200
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Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, Tejun Heo <htejun@gmail.com>

Hi Tejun,

Matthieu CASTET wrote:
> Hi,
> 
> the 2.6.25 from debian fail to make work the second port. I got a "SATA 
> link down (SStatus 61 Scontrol 30)" for ata2. ata1 got "SATA link up 3.0 
> Gbps (SStatus 13 SControl 30)"
> The 2.6.24 works [1]. But some previous kernel (IRRC 2.6.18) had the 
> same problem, ie ata2 doesn't work.
> 
I saw you post a patch for macbook for correcting a bug with ata_ppiix.
But it doesn't seem the same problem. I don't get 0 but others values.

May be a problem occurs when merging the master and slave status register ?


Any idea how to debug this.

For information this happen on a HP Compaq dc7700p, and there no way on 
the bios to change the controller to ahci mode


Thanks

Matthieu