Subject: Re: Ehci driver fails (PCI bus read problem ?)
To: Manuel Bouyer <>
From: Vincent <>
List: current-users
Date: 08/28/2003 10:08:31
Manuel Bouyer <> dixit :

> On Mon, Aug 25, 2003 at 02:26:53PM +0200, Vincent wrote:
> > I stepped from 1.6U to 1.6W with no ehci side effects (though I
> > confess I never plugged in any USB 2.0 device).
> > 
> > I think it was the Bios update which mangled up the thing. The same
> > kernel (1.6W) before the update was working fine.
> Looks like the device is disabled. Maybe there's a BIOS option for
> this ?

It is not disabled. In fact, the USB 1.0 and 2.0 controler are on the
same chip, both OHCI work fine.

Addressing the chip in PCI CONF space work. But it seems that accessing
the registers in PCI MEM space doesn't. I must check the validity
of the tag passed to ehci_init (...) function, it may be wrong, or
there is serious PCI mapping issue.