On 30/09/10 14:39, Mark Lord wrote:
On 10-09-29 04:32 PM, Richard wrote:
On 29/09/10 20:56, Mark Lord wrote:
What are you trying to do?
Hi Mark,
Its an embedded device whereby the one HDD I have does not work with
the Marvel PMP. I have the command to send to the PMP controller but
I am not an officianado with linux SATA(the code I have is from
VxWorks) The drive is confirmed working, but the PMP chip does not
default to SATA Generation 1, and this HDD is a bit dumb to figure it
out :) - so I have to force the PMP controller to Gen1 mode.
(I have tons of drives that work just fine, its just this ONE Maxtor
drive that is being a pain)
The short - I need to write a command to the SATA controller before
this HDD can be recognised.
..
Does the existing libata parameter take care of it for you?
linux/Documentation/kernel-parameters.txt:
eg. libata.force=[ID:]1.5" ## replace [ID:] with port[.device] for
the PMP and/or HD
Unfortunately not.. which is why I asked how to write commands directly
on to the SATA bus from kernel space.
Richard
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