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USB: Remove Wireless USB and UWB documentation 

Support for Wireless USB and Ultra WideBand was removed in 2020 by
commit caa6772db4 ("Staging: remove wusbcore and UWB from the kernel
tree.").  But the documentation files were left behind.

Let's get rid of that out-of-date documentation.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/015d4310-bcd3-4ba4-9a0e-3664f281a9be@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2023-08-08 20:44:35 -04:00 коммит произвёл Greg Kroah-Hartman
Родитель 1e4c574225
Коммит f176638af4
9 изменённых файлов: 5 добавлений и 396 удалений
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11
CREDITS
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@ -666,11 +666,6 @@ S: Tamsui town, Taipei county,
S: Taiwan 251
S: Republic of China
N: Reinette Chatre
E: reinette.chatre@intel.com
D: WiMedia Link Protocol implementation
D: UWB stack bits and pieces
N: Michael Elizabeth Chastain
E: mec@shout.net
D: Configure, Menuconfig, xconfig
@ -3023,12 +3018,6 @@ S: Demonstratsii 8-382
S: Tula 300000
S: Russia
N: Inaky Perez-Gonzalez
E: inaky.perez-gonzalez@intel.com
D: UWB stack, HWA-RC driver and HWA-HC drivers
D: Wireless USB additions to the USB stack
D: WiMedia Link Protocol bits and pieces
N: Gordon Peters
E: GordPeters@smarttech.com
D: Isochronous receive for IEEE 1394 driver (OHCI module).

28
Documentation/ABI/testing/sysfs-bus-umc
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@ -1,28 +0,0 @@
What: /sys/bus/umc/
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The Wireless Host Controller Interface (WHCI)
specification describes a PCI-based device with
multiple capabilities; the UWB Multi-interface
Controller (UMC).
The umc bus presents each of the individual
capabilties as a device.
What: /sys/bus/umc/devices/.../capability_id
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The ID of this capability, with 0 being the radio
controller capability.
What: /sys/bus/umc/devices/.../version
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The specification version this capability's hardware
interface complies with.

34
Documentation/ABI/testing/sysfs-bus-usb
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@ -28,40 +28,6 @@ Description:
drivers, non-authorized one are not. By default, wired
USB devices are authorized.
Certified Wireless USB devices are not authorized
initially and should be (by writing 1) after the
device has been authenticated.
What: /sys/bus/usb/device/.../wusb_cdid
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
For Certified Wireless USB devices only.
A devices's CDID, as 16 space-separated hex octets.
What: /sys/bus/usb/device/.../wusb_ck
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
For Certified Wireless USB devices only.
Write the device's connection key (CK) to start the
authentication of the device. The CK is 16
space-separated hex octets.
What: /sys/bus/usb/device/.../wusb_disconnect
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
For Certified Wireless USB devices only.
Write a 1 to force the device to disconnect
(equivalent to unplugging a wired USB device).
What: /sys/bus/usb/drivers/.../new_id
Date: October 2011
Contact: linux-usb@vger.kernel.org

156
Documentation/ABI/testing/sysfs-class-uwb_rc
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@ -1,156 +0,0 @@
What: /sys/class/uwb_rc
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
Interfaces for WiMedia Ultra Wideband Common Radio
Platform (UWB) radio controllers.
Familiarity with the ECMA-368 'High Rate Ultra
Wideband MAC and PHY Specification' is assumed.
What: /sys/class/uwb_rc/beacon_timeout_ms
Date: July 2008
KernelVersion: 2.6.27
Description:
If no beacons are received from a device for at least
this time, the device will be considered to have gone
and it will be removed. The default is 3 superframes
(~197 ms) as required by the specification.
What: /sys/class/uwb_rc/uwb<N>/
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
An individual UWB radio controller.
What: /sys/class/uwb_rc/uwb<N>/beacon
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
Write:
<channel>
to force a specific channel to be used when beaconing,
or, if <channel> is -1, to prohibit beaconing. If
<channel> is 0, then the default channel selection
algorithm will be used. Valid channels depends on the
radio controller's supported band groups.
Reading returns the currently active channel, or -1 if
the radio controller is not beaconing.
What: /sys/class/uwb_rc/uwb<N>/ASIE
Date: August 2014
KernelVersion: 3.18
Contact: linux-usb@vger.kernel.org
Description:
The application-specific information element (ASIE)
included in this device's beacon, in space separated
hex octets.
Reading returns the current ASIE. Writing replaces
the current ASIE with the one written.
What: /sys/class/uwb_rc/uwb<N>/scan
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
Write:
<channel> <type> [<bpst offset>]
to start (or stop) scanning on a channel. <type> is one of:
== =======================================
0 scan
1 scan outside BP
2 scan while inactive
3 scanning disabled
4 scan (with start time of <bpst offset>)
== =======================================
What: /sys/class/uwb_rc/uwb<N>/mac_address
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
The EUI-48, in colon-separated hex octets, for this
radio controller. A write will change the radio
controller's EUI-48 but only do so while the device is
not beaconing or scanning.
What: /sys/class/uwb_rc/uwb<N>/wusbhc
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
A symlink to the device (if any) of the WUSB Host
Controller PAL using this radio controller.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
A neighbour UWB device that has either been detected
as part of a scan or is a member of the radio
controllers beacon group.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/BPST
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
The time (using the radio controllers internal 1 ms
interval superframe timer) of the last beacon from
this device was received.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/DevAddr
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
The current DevAddr of this device in colon separated
hex octets.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/EUI_48
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
The EUI-48 of this device in colon separated hex
octets.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/IEs
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
The latest IEs included in this device's beacon, in
space separated hex octets with one IE per line.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/LQE
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
Link Quality Estimate - the Signal to Noise Ratio
(SNR) of all packets received from this device in dB.
This gives an estimate on a suitable PHY rate. Refer
to [ECMA-368] section 13.3 for more details.
What: /sys/class/uwb_rc/uwb<N>/<EUI-48>/RSSI
Date: July 2008
KernelVersion: 2.6.27
Contact: linux-usb@vger.kernel.org
Description:
Received Signal Strength Indication - the strength of
the received signal in dB. LQE is a more useful
measure of the radio link quality.

57
Documentation/ABI/testing/sysfs-class-uwb_rc-wusbhc
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@ -1,57 +0,0 @@
What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_chid
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Write the CHID (16 space-separated hex octets) for this host controller.
This starts the host controller, allowing it to accept connection from
WUSB devices.
Set an all zero CHID to stop the host controller.
What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_trust_timeout
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Devices that haven't sent a WUSB packet to the host
within 'wusb_trust_timeout' ms are considered to have
disconnected and are removed. The default value of
4000 ms is the value required by the WUSB
specification.
Since this relates to security (specifically, the
lifetime of PTKs and GTKs) it should not be changed
from the default.
What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_phy_rate
Date: August 2009
KernelVersion: 2.6.32
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The maximum PHY rate to use for all connected devices.
This is only of limited use for testing and
development as the hardware's automatic rate
adaptation is better then this simple control.
Refer to [ECMA-368] section 10.3.1.1 for the value to
use.
What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_dnts
Date: June 2013
KernelVersion: 3.11
Contact: Thomas Pugliese <thomas.pugliese@gmail.com>
Description:
The device notification time slot (DNTS) count and inverval in
milliseconds that the WUSB host should use. This controls how
often the devices will have the opportunity to send
notifications to the host.
What: /sys/class/uwb_rc/uwb<N>/wusbhc/wusb_retry_count
Date: June 2013
KernelVersion: 3.11
Contact: Thomas Pugliese <thomas.pugliese@gmail.com>
Description:
The number of retries that the WUSB host should attempt
before reporting an error for a bus transaction. The range of
valid values is [0..15], where 0 indicates infinite retries.

101
Documentation/ABI/testing/sysfs-wusb_cbaf
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@ -1,101 +0,0 @@
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_*
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Various files for managing Cable Based Association of
(wireless) USB devices.
The sequence of operations should be:
1. Device is plugged in.
2. The connection manager (CM) sees a device with CBA capability.
(the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
3. The CM writes the host name, supported band groups,
and the CHID (host ID) into the wusb_host_name,
wusb_host_band_groups and wusb_chid files. These
get sent to the device and the CDID (if any) for
this host is requested.
4. The CM can verify that the device's supported band
groups (wusb_device_band_groups) are compatible
with the host.
5. The CM reads the wusb_cdid file.
6. The CM looks it up its database.
- If it has a matching CHID,CDID entry, the device
has been authorized before and nothing further
needs to be done.
- If the CDID is zero (or the CM doesn't find a
matching CDID in its database), the device is
assumed to be not known. The CM may associate
the host with device by: writing a randomly
generated CDID to wusb_cdid and then a random CK
to wusb_ck (this uploads the new CC to the
device).
CMD may choose to prompt the user before
associating with a new device.
7. Device is unplugged.
References:
[WUSB-AM]
Association Models Supplement to the
Certified Wireless Universal Serial Bus
Specification, version 1.0.
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The CHID of the host formatted as 16 space-separated
hex octets.
Writes fetches device's supported band groups and the
the CDID for any existing association with this host.
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
A friendly name for the host as a UTF-8 encoded string.
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The band groups supported by the host, in the format
defined in [WUSB-AM].
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The band groups supported by the device, in the format
defined in [WUSB-AM].
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
The device's CDID formatted as 16 space-separated hex
octets.
What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck
Date: August 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Write 16 space-separated random, hex octets to
associate with the device.

2
Documentation/admin-guide/kernel-parameters.txt
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@ -6607,7 +6607,7 @@
usbcore.authorized_default=
[USB] Default USB device authorization:
(default -1 = authorized except for wireless USB,
(default -1 = authorized (same as 1),
0 = not authorized, 1 = authorized, 2 = authorized
if device connected to internal port)

3
Documentation/driver-api/usb/usb.rst
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@ -777,8 +777,7 @@ Speed may be:
======= ======================================================
1.5 Mbit/s for low speed USB
12 Mbit/s for full speed USB
480 Mbit/s for high speed USB (added for USB 2.0);
also used for Wireless USB, which has no fixed speed
480 Mbit/s for high speed USB (added for USB 2.0)
5000 Mbit/s for SuperSpeed USB (added for USB 3.0)
======= ======================================================

9
Documentation/usb/authorization.rst
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@ -33,12 +33,9 @@ Remove the lock down::
$ echo 1 > /sys/bus/usb/devices/usbX/authorized_default
By default, Wired USB devices are authorized by default to
connect. Wireless USB hosts deauthorize by default all new connected
devices (this is so because we need to do an authentication phase
before authorizing). Writing "2" to the authorized_default attribute
causes kernel to only authorize by default devices connected to internal
USB ports.
By default, all USB devices are authorized. Writing "2" to the
authorized_default attribute causes the kernel to authorize by default
only devices connected to internal USB ports.
Example system lockdown (lame)