Re: Request for help

[ebiederman@lnxi.com (Eric W. Biederman)]

I am CC'ing linux-kernel as that is the general kernel list.  There
may be something even more focused on IDE issues but I am
not aware of it.

"ganesh_borse" <ganesh_borse@indiatimes.com> writes:

> Hi,
> 
> 
> I would like to request for a little help related to IDE controllers.
> 
> 
> I am trying to develop a device drive code for listing the devices connected to
> a ide controller at the time of kernel booting.
> 
> 
> 
> Is there any way to get which channels on ide controller has got devices and
> which devices? 

Yes.  But it is baroque.

> This I am trying to get even before the normal ide device driver
> has been setup. Are there ide controller commands to get this info? 

Not exactly.  The method is essentially you ping the drives to see
if they are there.

> Or is this
> info stored in registers of ide-controllers? 

Nope this information is not stored in registers.

> For this do we need to write
> assembly instructions on linux?

No.

But there is also nothing that allows you to force the module
order within the kernel.  So there are no guarantees you will
come before a normal IDE driver.  I assume from the questions
you intend to have this working in the linux kernel.

Eric