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| author | Dan Williams <dan.j.williams@intel.com> | 2024-03-13 08:09:20 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2024-03-13 08:09:20 +0100 |
| commit | 75f4d93ee8faf08546f3cc4c3d96c866b24358c8 (patch) | |
| tree | e493ce7ffecc18026d67fbf13bd031da0d13d77f /Documentation/ABI | |
| parent | Merge branch 'for-6.9/cxl-qos' into for-6.9/cxl (diff) | |
| parent | EINJ, Documentation: Update EINJ kernel doc (diff) | |
| download | linux-75f4d93ee8faf08546f3cc4c3d96c866b24358c8.tar.xz linux-75f4d93ee8faf08546f3cc4c3d96c866b24358c8.zip | |
Merge branch 'for-6.9/cxl-einj' into for-6.9/cxl
Pick up support for injecting errors via ACPI EINJ into the CXL protocol
for v6.9.
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-cxl | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-cxl b/Documentation/ABI/testing/debugfs-cxl index fe61d372e3fa..4c0f62f881ca 100644 --- a/Documentation/ABI/testing/debugfs-cxl +++ b/Documentation/ABI/testing/debugfs-cxl @@ -33,3 +33,33 @@ Description: device cannot clear poison from the address, -ENXIO is returned. The clear_poison attribute is only visible for devices supporting the capability. + +What: /sys/kernel/debug/cxl/einj_types +Date: January, 2024 +KernelVersion: v6.9 +Contact: linux-cxl@vger.kernel.org +Description: + (RO) Prints the CXL protocol error types made available by + the platform in the format "0x<error number> <error type>". + The possible error types are (as of ACPI v6.5): + 0x1000 CXL.cache Protocol Correctable + 0x2000 CXL.cache Protocol Uncorrectable non-fatal + 0x4000 CXL.cache Protocol Uncorrectable fatal + 0x8000 CXL.mem Protocol Correctable + 0x10000 CXL.mem Protocol Uncorrectable non-fatal + 0x20000 CXL.mem Protocol Uncorrectable fatal + + The <error number> can be written to einj_inject to inject + <error type> into a chosen dport. + +What: /sys/kernel/debug/cxl/$dport_dev/einj_inject +Date: January, 2024 +KernelVersion: v6.9 +Contact: linux-cxl@vger.kernel.org +Description: + (WO) Writing an integer to this file injects the corresponding + CXL protocol error into $dport_dev ($dport_dev will be a device + name from /sys/bus/pci/devices). The integer to type mapping for + injection can be found by reading from einj_types. If the dport + was enumerated in RCH mode, a CXL 1.1 error is injected, otherwise + a CXL 2.0 error is injected. |