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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-09-03 13:13:21 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-02-04 10:45:24 +0300 |
| commit | 3cd542e6e6afb6fa6c34d4094d498f42e22110f5 (patch) | |
| tree | 8da9bf70185b452e1008254a08367c12ce765397 /Documentation/ABI | |
| parent | 8b0ab503c07ecd0f9754796bf0ae5c3c1a2a6388 (diff) | |
| download | linux-3cd542e6e6afb6fa6c34d4094d498f42e22110f5.tar.bz2 | |
thunderbolt: Add support for PCIe tunneling disabled (SL5)
Recent Intel Thunderbolt firmware connection manager has support for
another security level, SL5, that disables PCIe tunneling. This option
can be turned on from the BIOS.
When this is set the driver exposes a new security level "nopcie" to the
userspace and hides the authorized attribute under connected devices.
While there we also hide it when "dponly" security level is enabled
since it is not really usable in that case anyway.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-thunderbolt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-thunderbolt b/Documentation/ABI/testing/sysfs-bus-thunderbolt index 581dea95245b..d7f09d011b6d 100644 --- a/Documentation/ABI/testing/sysfs-bus-thunderbolt +++ b/Documentation/ABI/testing/sysfs-bus-thunderbolt @@ -85,6 +85,8 @@ 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 |