diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-thunderbolt')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-thunderbolt | 140 |
1 files changed, 136 insertions, 4 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-thunderbolt b/Documentation/ABI/testing/sysfs-bus-thunderbolt index b21fba14689b..4fe13da6fd64 100644 --- a/Documentation/ABI/testing/sysfs-bus-thunderbolt +++ b/Documentation/ABI/testing/sysfs-bus-thunderbolt @@ -1,3 +1,31 @@ +What: /sys/bus/thunderbolt/devices/<xdomain>/rx_speed +Date: Feb 2021 +KernelVersion: 5.11 +Contact: Isaac Hazan <isaac.hazan@intel.com> +Description: This attribute reports the XDomain RX speed per lane. + All RX lanes run at the same speed. + +What: /sys/bus/thunderbolt/devices/<xdomain>/rx_lanes +Date: Feb 2021 +KernelVersion: 5.11 +Contact: Isaac Hazan <isaac.hazan@intel.com> +Description: This attribute reports the number of RX lanes the XDomain + is using simultaneously through its upstream port. + +What: /sys/bus/thunderbolt/devices/<xdomain>/tx_speed +Date: Feb 2021 +KernelVersion: 5.11 +Contact: Isaac Hazan <isaac.hazan@intel.com> +Description: This attribute reports the XDomain TX speed per lane. + All TX lanes run at the same speed. + +What: /sys/bus/thunderbolt/devices/<xdomain>/tx_lanes +Date: Feb 2021 +KernelVersion: 5.11 +Contact: Isaac Hazan <isaac.hazan@intel.com> +Description: This attribute reports number of TX lanes the XDomain + is using simultaneously through its upstream port. + What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl Date: Jun 2018 KernelVersion: 4.17 @@ -21,6 +49,15 @@ Description: Holds a comma separated list of device unique_ids that If a device is authorized automatically during boot its boot attribute is set to 1. +What: /sys/bus/thunderbolt/devices/.../domainX/deauthorization +Date: May 2021 +KernelVersion: 5.12 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: This attribute tells whether the system supports + de-authorization of devices. Value of 1 means user can + de-authorize PCIe tunnel by writing 0 to authorized + attribute under each device. + What: /sys/bus/thunderbolt/devices/.../domainX/iommu_dma_protection Date: Mar 2019 KernelVersion: 4.21 @@ -47,6 +84,8 @@ Description: This attribute holds current Thunderbolt security level usbonly: Automatically tunnel USB controller of the connected Thunderbolt dock (and Display Port). All PCIe links downstream of the dock are removed. + nopcie USB4 system where PCIe tunneling is disabled from + the BIOS. What: /sys/bus/thunderbolt/devices/.../authorized Date: Sep 2017 @@ -54,17 +93,21 @@ KernelVersion: 4.13 Contact: thunderbolt-software@lists.01.org Description: This attribute is used to authorize Thunderbolt devices after they have been connected. If the device is not - authorized, no devices such as PCIe and Display port are - available to the system. + authorized, no PCIe devices are available to the system. Contents of this attribute will be 0 when the device is not yet authorized. Possible values are supported: + + 0 The device will be de-authorized (only supported if + deauthorization attribute under domain contains 1) 1: The device will be authorized and connected When key attribute contains 32 byte hex string the possible values are: + 0 The device will be de-authorized (only supported if + deauthorization attribute under domain contains 1) 1: The 32 byte hex string is added to the device NVM and the device is authorized. 2: Send a challenge based on the 32 byte hex string. If the @@ -80,6 +123,14 @@ 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 +Date: Jan 2020 +KernelVersion: 5.5 +Contact: Christian Kellner <christian@kellner.me> +Description: This attribute contains the generation of the Thunderbolt + controller associated with the device. It will contain 4 + for USB4. + What: /sys/bus/thunderbolt/devices/.../key Date: Sep 2017 KernelVersion: 4.13 @@ -104,6 +155,34 @@ Contact: thunderbolt-software@lists.01.org Description: This attribute contains name of this device extracted from the device DROM. +What: /sys/bus/thunderbolt/devices/.../rx_speed +Date: Jan 2020 +KernelVersion: 5.5 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: This attribute reports the device RX speed per lane. + All RX lanes run at the same speed. + +What: /sys/bus/thunderbolt/devices/.../rx_lanes +Date: Jan 2020 +KernelVersion: 5.5 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: This attribute reports number of RX lanes the device is + using simultaneusly through its upstream port. + +What: /sys/bus/thunderbolt/devices/.../tx_speed +Date: Jan 2020 +KernelVersion: 5.5 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: This attribute reports the TX speed per lane. + All TX lanes run at the same speed. + +What: /sys/bus/thunderbolt/devices/.../tx_lanes +Date: Jan 2020 +KernelVersion: 5.5 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: This attribute reports number of TX lanes the device is + using simultaneusly through its upstream port. + What: /sys/bus/thunderbolt/devices/.../vendor Date: Sep 2017 KernelVersion: 4.13 @@ -142,11 +221,18 @@ KernelVersion: 4.13 Contact: thunderbolt-software@lists.01.org Description: When new NVM image is written to the non-active NVM area (through non_activeX NVMem device), the - authentication procedure is started by writing 1 to - this file. If everything goes well, the device is + authentication procedure is started by writing to + this file. + If everything goes well, the device is 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" + - 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. + When read holds status of the last authentication operation if an error occurred during the process. This is directly the status value from the DMA configuration @@ -200,3 +286,49 @@ KernelVersion: 4.15 Contact: thunderbolt-software@lists.01.org Description: This contains XDomain service specific settings as bitmask. Format: %x + +What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/device +Date: Oct 2020 +KernelVersion: v5.9 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: Retimer device identifier read from the hardware. + +What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/nvm_authenticate +Date: Oct 2020 +KernelVersion: v5.9 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: When new NVM image is written to the non-active NVM + area (through non_activeX NVMem device), the + authentication procedure is started by writing 1 to + this file. If everything goes well, the device is + restarted with the new NVM firmware. If the image + verification fails an error code is returned instead. + + When read holds status of the last authentication + operation if an error occurred during the process. + Format: %x. + +What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/nvm_version +Date: Oct 2020 +KernelVersion: v5.9 +Contact: Mika Westerberg <mika.westerberg@linux.intel.com> +Description: Holds retimer NVM version number. Format: %x.%x, major.minor. + +What: /sys/bus/thunderbolt/devices/<device>:<port>.<index>/vendor +Date: Oct 2020 +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. |