-What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl
+What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl
Date: Jun 2018
KernelVersion: 4.17
Contact: thunderbolt-software@lists.01.org
If a device is authorized automatically during boot its
boot attribute is set to 1.
-What: /sys/bus/thunderbolt/devices/.../domainX/deauthorization
+What: /sys/bus/thunderbolt/devices/.../domainX/deauthorization
Date: May 2021
KernelVersion: 5.12
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
de-authorize PCIe tunnel by writing 0 to authorized
attribute under each device.
-What: /sys/bus/thunderbolt/devices/.../domainX/iommu_dma_protection
+What: /sys/bus/thunderbolt/devices/.../domainX/iommu_dma_protection
Date: Mar 2019
KernelVersion: 4.21
Contact: thunderbolt-software@lists.01.org
it is not (DMA protection is solely based on Thunderbolt
security levels).
-What: /sys/bus/thunderbolt/devices/.../domainX/security
+What: /sys/bus/thunderbolt/devices/.../domainX/security
Date: Sep 2017
KernelVersion: 4.13
Contact: thunderbolt-software@lists.01.org
the BIOS.
======= ==================================================
-What: /sys/bus/thunderbolt/devices/.../authorized
+What: /sys/bus/thunderbolt/devices/.../authorized
Date: Sep 2017
KernelVersion: 4.13
Contact: thunderbolt-software@lists.01.org
EKEYREJECTED if the challenge response did not match.
== ========================================================
-What: /sys/bus/thunderbolt/devices/.../boot
+What: /sys/bus/thunderbolt/devices/.../boot
Date: Jun 2018
KernelVersion: 4.17
Contact: thunderbolt-software@lists.01.org
Description: This attribute contains 1 if Thunderbolt device was already
authorized on boot and 0 otherwise.
-What: /sys/bus/thunderbolt/devices/.../generation
+What: /sys/bus/thunderbolt/devices/.../generation
Date: Jan 2020
KernelVersion: 5.5
Contact: Christian Kellner <christian@kellner.me>
controller associated with the device. It will contain 4
for USB4.
-What: /sys/bus/thunderbolt/devices/.../key
+What: /sys/bus/thunderbolt/devices/.../key
Date: Sep 2017
KernelVersion: 4.13
Contact: thunderbolt-software@lists.01.org
restarted with the new NVM firmware. If the image
verification fails an error code is returned instead.
- This file will accept writing values "1" or "2"
+ This file will accept writing values "1", "2" or "3".
- Writing "1" will flush the image to the storage
area and authenticate the image in one action.
- Writing "2" will run some basic validation on the image
and flush it to the storage area.
+ - Writing "3" will authenticate the image that is
+ currently written in the storage area. This is only
+ supported with USB4 devices and retimers.
When read holds status of the last authentication
operation if an error occurred during the process. This
based mailbox before the device is power cycled. Writing
0 here clears the status.
+What: /sys/bus/thunderbolt/devices/.../nvm_authenticate_on_disconnect
+Date: Oct 2020
+KernelVersion: v5.9
+Contact: Mario Limonciello <mario.limonciello@outlook.com>
+Description: For supported devices, automatically authenticate the new Thunderbolt
+ image when the device is disconnected from the host system.
+
+ This file will accept writing values "1" or "2"
+
+ - Writing "1" will flush the image to the storage
+ area and prepare the device for authentication on disconnect.
+ - Writing "2" will run some basic validation on the image
+ and flush it to the storage area.
+
What: /sys/bus/thunderbolt/devices/<xdomain>.<service>/key
Date: Jan 2018
KernelVersion: 4.15
Description: This contains XDomain service specific settings as
bitmask. Format: %x
+What: /sys/bus/thunderbolt/devices/usb4_portX/link
+Date: Sep 2021
+KernelVersion: v5.14
+Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
+Description: Returns the current link mode. Possible values are
+ "usb4", "tbt" and "none".
+
+What: /sys/bus/thunderbolt/devices/usb4_portX/offline
+Date: Sep 2021
+KernelVersion: v5.14
+Contact: Rajmohan Mani <rajmohan.mani@intel.com>
+Description: Writing 1 to this attribute puts the USB4 port into
+ offline mode. Only allowed when there is nothing
+ connected to the port (link attribute returns "none").
+ Once the port is in offline mode it does not receive any
+ hotplug events. This is used to update NVM firmware of
+ on-board retimers. Writing 0 puts the port back to
+ online mode.
+
+ This attribute is only visible if the platform supports
+ powering on retimers when there is no cable connected.
+
+What: /sys/bus/thunderbolt/devices/usb4_portX/rescan
+Date: Sep 2021
+KernelVersion: v5.14
+Contact: Rajmohan Mani <rajmohan.mani@intel.com>
+Description: When the USB4 port is in offline mode writing 1 to this
+ attribute forces rescan of the sideband for on-board
+ retimers. Each retimer appear under the USB4 port as if
+ the USB4 link was up. These retimers act in the same way
+ as if the cable was connected so upgrading their NVM
+ firmware can be done the usual way.
+
What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/device
Date: Oct 2020
KernelVersion: v5.9
KernelVersion: v5.9
Contact: Mika Westerberg <mika.westerberg@linux.intel.com>
Description: Retimer vendor identifier read from the hardware.
-
-What: /sys/bus/thunderbolt/devices/.../nvm_authenticate_on_disconnect
-Date: Oct 2020
-KernelVersion: v5.9
-Contact: Mario Limonciello <mario.limonciello@dell.com>
-Description: For supported devices, automatically authenticate the new Thunderbolt
- image when the device is disconnected from the host system.
-
- This file will accept writing values "1" or "2"
-
- - Writing "1" will flush the image to the storage
- area and prepare the device for authentication on disconnect.
- - Writing "2" will run some basic validation on the image
- and flush it to the storage area.
projects / linux-2.6-microblaze.git / blobdiff