Re: [coreboot] rfkill equivalent on the X60 - first partial success

[Carl-Daniel Hailfinger]

On 07.12.2014 04:31, Charles Devereaux wrote:
> It can be powered, since in the X60 the WWAN port only has the USB lines
> wired, so it's not much of a security problem for the PCI bus as long as it
> is not connected to the USB bus where it could wake up from suspend and
> pretend to be many different things.
>
> The hardware swich properly disconnects the bluetooth module from USB. It
> would be nice to do the same for wwan, but I guess ec_access and echo -n
> "suspend" are better than nothing. I plan to try and create a rfkill-wwan
> kernel module doing just that. I tried to find some code example for the RCBA
> but couldn't.

Has anyone ever managed to get the USB lines on the T60 WLAN slot to
work? I plugged in an Intel 7260 802.11ac + Bluetooth card, and it is
reportedly using USB for bluetooth and PCIe for WLAN. My problem is that
the Bluetooth part of the card doesn't even show up in lsusb.

This thread made me wonder whether this is just an issue with broken rfkill.

Regards,
Carl-Daniel

rfkill equivalent on the X60 - first partial success

[Charles Devereaux]

Sorry, but if it is like the X60 it can not be made the work.

Just like in the WWAN slot, but in reverse, the USB lines are not wired on
the WLAN slot.

IIRC this is not the case on the X201 (a very nice machine, but coreboot
support may not be as good for the moment. However the ACPI tables look
more complete.)

Most dual (wifi+bt) mini PCIe cards use the PCIe lines for wifi and the USB
lines for bt, which is why you see the wifi in lspci but no bt in lsusb.

On Sun, Dec 7, 2014 at 5:57 PM, Carl-Daniel Hailfinger <
[e-mail]> wrote:
> On 07.12.2014 04:31, Charles Devereaux wrote:
> > It can be powered, since in the X60 the WWAN port only has the USB lines
> > wired, so it's not much of a security problem for the PCI bus as long as
>
> it
> > is not connected to the USB bus where it could wake up from suspend and
> > pretend to be many different things.
> >
> > The hardware swich properly disconnects the bluetooth module from USB. It
> > would be nice to do the same for wwan, but I guess ec_access and echo -n
> > "suspend" are better than nothing. I plan to try and create a rfkill-wwan
> > kernel module doing just that. I tried to find some code example for the
>
> RCBA
> > but couldn't.
>
> Has anyone ever managed to get the USB lines on the T60 WLAN slot to
> work? I plugged in an Intel 7260 802.11ac + Bluetooth card, and it is
> reportedly using USB for bluetooth and PCIe for WLAN. My problem is that
> the Bluetooth part of the card doesn't even show up in lsusb.
>
> This thread made me wonder whether this is just an issue with broken
> rfkill.
>
> Regards,
> Carl-Daniel