Commit graph

6 commits

Author SHA1 Message Date
David Vrabel
6fae35f9ce uwb: add basic radio manager
The UWB radio manager coordinates the use of the radio between the
PALs that may be using it.  PALs request use of the radio with
uwb_radio_start() and the radio manager will start beaconing if its
not already doing so.  When the last PAL has called uwb_radio_stop()
beaconing will be stopped.

In the future, the radio manager will have a more sophisticated channel
selection algorithm, probably following the Channel Selection Policy
from the WiMedia Alliance when it is finalized.  For now, channel 9
(BG1, TFC1) is selected.

The user may override the channel selected by the radio manager and may
force the radio to stop beaconing.

The WUSB Host Controller PAL makes use of this and there are two new
debug PAL commands that can be used for testing.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-19 14:46:33 +00:00
David Vrabel
58be81ed30 uwb: fix races between events and neh timers
Always use del_timer_sync() before freeing nehs.  Destroy all nehs after
stopping the radio controller and before cleaning up the reservation
manager.  Handle the timer running after an event has removed the neh.

This fixes various oopses that may occur if a radio controller is removed
while a neh timer is still active.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-07 18:19:19 +00:00
Stefano Panella
fec1a5932f uwb: per-radio controller event thread and beacon cache
Use an event thread per-radio controller so processing events from one
radio controller doesn't delay another.

A radio controller shouldn't have information on devices seen by a
different radio controller (they may be on different channels) so make the
beacon cache per-radio controller.

Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-04 15:55:26 +00:00
David Vrabel
1cde7f68ce uwb: order IEs by element ID
ECMA-368 requires that IEs in a beacon must be sorted by element ID.  Most
hardware uses the ordering in the Set IE URC command so get the ordering
right on the host.

Also refactor the IE management code:
  - use uwb_ie_next() instead of uwb_ie_for_each().
  - remove unnecessary functions.
  - API is now only uwb_rc_ie_add() and uwb_rc_ie_rm().

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-28 12:09:17 +00:00
David Vrabel
b63795fa3a uwb: dont tranmit identification IEs
The current identification IE doesn't include any useful information
(the vendor ID is from the EUI-48) and it causes problems with certain
hardware/firmware so don't transmit one.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17 16:54:34 +01:00
Inaky Perez-Gonzalez
183b9b592a uwb: add the UWB stack (core files)
UWB device and radio controller device and event management.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17 16:54:23 +01:00