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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>
146 lines
5.1 KiB
Text
146 lines
5.1 KiB
Text
What: /sys/class/uwb_rc
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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Interfaces for WiMedia Ultra Wideband Common Radio
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Platform (UWB) radio controllers.
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Familiarity with the ECMA-368 'High Rate Ultra
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Wideband MAC and PHY Specification' is assumed.
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What: /sys/class/uwb_rc/beacon_timeout_ms
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Date: July 2008
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KernelVersion: 2.6.27
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Description:
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If no beacons are received from a device for at least
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this time, the device will be considered to have gone
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and it will be removed. The default is 3 superframes
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(~197 ms) as required by the specification.
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What: /sys/class/uwb_rc/uwbN/
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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An individual UWB radio controller.
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What: /sys/class/uwb_rc/uwbN/beacon
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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Write:
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<channel>
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to force a specific channel to be used when beaconing,
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or, if <channel> is -1, to prohibit beaconing. If
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<channel> is 0, then the default channel selection
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algorithm will be used. Valid channels depends on the
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radio controller's supported band groups.
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Reading returns the currently active channel, or -1 if
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the radio controller is not beaconing.
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What: /sys/class/uwb_rc/uwbN/scan
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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Write:
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<channel> <type> [<bpst offset>]
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to start (or stop) scanning on a channel. <type> is one of:
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0 - scan
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1 - scan outside BP
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2 - scan while inactive
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3 - scanning disabled
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4 - scan (with start time of <bpst offset>)
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What: /sys/class/uwb_rc/uwbN/mac_address
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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The EUI-48, in colon-separated hex octets, for this
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radio controller. A write will change the radio
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controller's EUI-48 but only do so while the device is
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not beaconing or scanning.
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What: /sys/class/uwb_rc/uwbN/wusbhc
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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A symlink to the device (if any) of the WUSB Host
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Controller PAL using this radio controller.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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A neighbour UWB device that has either been detected
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as part of a scan or is a member of the radio
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controllers beacon group.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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The time (using the radio controllers internal 1 ms
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interval superframe timer) of the last beacon from
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this device was received.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/DevAddr
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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The current DevAddr of this device in colon separated
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hex octets.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/EUI_48
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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The EUI-48 of this device in colon separated hex
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octets.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/IEs
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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The latest IEs included in this device's beacon, in
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space separated hex octets with one IE per line.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/LQE
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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Link Quality Estimate - the Signal to Noise Ratio
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(SNR) of all packets received from this device in dB.
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This gives an estimate on a suitable PHY rate. Refer
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to [ECMA-368] section 13.3 for more details.
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What: /sys/class/uwb_rc/uwbN/<EUI-48>/RSSI
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Date: July 2008
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KernelVersion: 2.6.27
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Contact: linux-usb@vger.kernel.org
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Description:
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Received Signal Strength Indication - the strength of
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the received signal in dB. LQE is a more useful
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measure of the radio link quality.
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