Commit Graph

11 Commits

Author SHA1 Message Date
David Vrabel
f720af91ec USB: whci-hcd: check return value of usb_hcd_link_urb_to_ep()
Check the return value of usb_hcd_link_urb_to_ep() and do not add the
urb to the ASL/PZL if it returns an error.

Omitting the check results in urbs that appear to be submitted
successfully but then cannot be unliked (because
usb_hcd_check_unlink_urb() returns an error).  This can cause khubd (for
example) to block forever in usb_kill_urb().

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-17 10:50:27 -07:00
David Vrabel
7f0406db5f USB: whci-hcd: provide a endpoint_reset method
Provide a endpoint_reset method to reset sequence number and current
window.  This QHead information can only be changed while the qset is
not in a schedule.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-04-17 10:50:27 -07:00
David Vrabel
a3c1239eb5 wusb: whci-hcd: always lock whc->lock with interrupts disabled
Always lock whc->lock with spin_lock_irq() or spin_lock_irqsave().

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2009-02-16 14:37:12 +00:00
David Vrabel
a5e6ced58d wusb: timeout when waiting for ASL/PZL updates in whci-hcd
Timeout if an ASL or PZL update doesn't not complete and reset the
hardware.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2009-01-07 10:54:22 +00:00
David Vrabel
dcc7461eef wusb: add debug files for ASL, PZL and DI to the whci-hcd driver
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>
2008-11-26 13:36:59 +00:00
David Vrabel
56968d0c1a wusb: whci-hcd shouldn't do ASL/PZL updates while channel is inactive
ASL/PZL updates while the WUSB channel is inactive (i.e., the PZL and
ASL are stopped) may not complete.  This causes hangs when removing the
whci-hcd module if a device is still connected (removing the device
does an endpoint_disable which results in an ASL update to remove the
qset).

If the WUSB channel is inactive the update can simply be skipped as the
WHC doesn't care about the state of the ASL/PZL.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-25 14:23:40 +00:00
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
Huang Weiyi
f88518d122 wusb: remove unused #include <version.h>
The file(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION.
  drivers/usb/host/hwa-hc.c
  drivers/usb/host/whci/hcd.c
  drivers/usb/host/whci/int.c
  drivers/usb/host/whci/wusb.c
  drivers/usb/wusbcore/cbaf.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>
2008-10-31 15:10:27 +00:00
David Vrabel
4d2bea4ca0 wusb: do a proper channel stop
When stopping the WUSB channel the host should send Channel Stop IEs giving
the WUSB Channel Time of the last MMC.  Both WHCI and HWA hosts provide a
channel stop command for this.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-28 12:08:46 +00:00
David Vrabel
b09ac64b7b wusb: release mutex in the error path of whci-hcd's whc_do_gencmd()
Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-28 12:06:59 +00:00
David Vrabel
7e6133aa42 wusb: WHCI host controller driver
A driver for Wireless USB host controllers that comply with the
Wireless Host Controller Interface (HCI) specification as published by
Intel.

The latest publically available version of the specification (0.95) is
supported (except for isochronous transfers).

Build fixes by Randy Dunlap <rdunlap@xenotime.net>

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17 16:54:31 +01:00