GitLab

rc->rsvs_lock may be taken in a timer so lock it with spin_lock_bh().
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove unused #include <version.h>'s in file(s) below,
  drivers/uwb/allocator.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

When removing all reservations during shutdown, terminate them first and
then wait for any pending timeout work to complete.  This prevents the
timeout work from running after the reservation has been freed.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Fix misspelling of "firmware" in usb.c

It's spelled "firmware".
Signed-off-by: Nick Andrew <nick@nick-andrew.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Removing the beacon cache entry from a uwb_dev can cause an oops if the
bce is released before the call to uwb_notify().
Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: David Vrabel <david.vrabel@csr.com>

Use print_hex_dump() instead of the home-grown dump_bytes().
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Instead of the home-grown d_fnstart(), d_fnend() and d_printf() macros,
use dev_dbg() or remove the message entirely.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Don't leak memory in uwb_rc_notif() if certain non-standard events are
received.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Calling uwb_rsv_terminate() on a reservation already in UWB_RSV_STATE_NONE
should do nothing.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Greatly enhance the MAS allocator:
  - Handle row and column reservations.
  - Permit all the available MAS to be allocated.
  - Follows the WiMedia rules on MAS selection.

Take appropriate action when reservation conflicts are detected.
  - Correctly identify which reservation wins the conflict.
  - Protect alien BP reservations.
  - If an owned reservation loses, resize/move it.
  - Follow the backoff procedure before requesting additional MAS.

When reservations are terminated, move the remaining reservations (if
necessary) so they keep following the MAS allocation rules.
Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Add asl, pzl and di debugfs files to uwb/uwbN/wusbhc for WHCI host
controller.  These dump the current ASL, PZL and DI buffer.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Initialize pal_priv for reservations created by the debug PAL.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

All callers of whci_wait_for() should get consistant error message if a
timeout occurs.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

The UWB_NOTIF_BG_JOIN/UWB_NOTIF_BG_LEAVE events have been
superceeded by the channel_changed callback in struct uwb_pal.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: David Vrabel <david.vrabel@csr.com>

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>

The pal parameter allows PALs to retrieve their PAL-specific data
structure.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

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>

Use pre_reset and post_reset methods to avoid unbinding the radio
controller driver after a uwb_rc_reset_all() call.  This avoids a
deadlock in uwb_rc_rm() when waiting for the uwb event thread to stop.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

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>

Add the commands UWB_DBG_CMD_IE_ADD and UWB_DBG_CMD_IE_RM to the debug
interface and make them call uwb_rc_ie_add() and uwb_rc_ie_rm().
Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

The structures and event handler needed to handle Relinish Request IEs
received from neighbors.  Nothing is done with these IEs yet.
Signed-off-by: Stefano Panella <stefano.panella@csr.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Cc: David Vrabel <david.vrabel@csr.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-Off-By: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

The file(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  drivers/uwb/drp-ie.c
  drivers/uwb/hwa-rc.c
  drivers/uwb/i1480/dfu/usb.c
  drivers/uwb/i1480/i1480u-wlp/lc.c
  drivers/uwb/i1480/i1480u-wlp/sysfs.c
  drivers/uwb/rsv.c
  drivers/uwb/whc-rc.c

This patch removes the said #include <version.h>.
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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>

Reference counting the struct uwb_rsv's is safer and easier to get right than
the transferring ownership of the structures from the PAL to reservation
manager.

This fixes an oops in the debug PAL after a reservation timed out.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

The reservation owner should decide the stream index to use based on
what reservations it's created.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

In the __uwb_beca_find_bymac function the sizeof returns
the length of a pointer and not the data it is referring
to. Hence only the first 4 bytes were compared, not the
entire 6 bytes MAC address. Now the sizeof takes struct
uwb_mac_addr as argument.
Signed-off-by: Frank Leipold <frank.leipold@eads.net>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Avoid using printk_ratelimit() in many places because:
  - many were error messages reporting broken hardware (it's useful to
    get all of these).
  - the message itself wasn't useful so the message has been removed.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: David Vrabel <david.vrabel@csr.com>

Signed-off-by: David Vrabel <david.vrabel@csr.com>

The UWB stack has some sysfs APIs that will change thus it's best
marked as EXPERIMENTAL until these APIs are finalized.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

Add a facility for PALs to have symlinks to their radio controller
(and vice-versa) and make WUSB host controllers use this.
Signed-off-by: David Vrabel <david.vrabel@csr.com>

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>

IOGear firmware versions >= 1.4.12224 fail to be downloaded because of a
spurious (and harmless) RCEB received after the download notification. This
patch handles this RCEB and keeps compatibility with future versions that might
not emit this RCEB.

i1480_rceb_check() is reused to check for the RCEB. It is also refactored with
improved comments and reused in another place in mac.c where the checking was
being duplicated.

This patch was tested on both i1480 and GUWA100U HWAs, with all firmware
versions currently available.
Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>

Some hardware/firmware combinations (most notably an IOGear HWA using the i1480
firmware) kill the host controller after issuing a GET_MAC_PHY_INFO command.
Removing this check seems harmless otherwise.

The patch fixes the issue where the HC is killed, showing the message:

ehci_hcd 0000:00:1d.7: HC died; cleaning up

After this error, USB comes back only after reloading the ehci_hcd module.
Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
Signed-off-by: David Vrabel <david.vrabel@csr.com>

The Intel i1480 HWA uses WHCI commands/events even though reporting itself as
WUSB compliant. This patch fixes this by marking it with the
WUSB_QUIRK_WHCI_CMD_EVT flag, which disables WUSB command/event filtering.
Signed-off-by: Anderson Lizardo <anderson.lizardo@indt.org.br>
Signed-off-by: David Vrabel <david.vrabel@csr.com>