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- ====================
- AMDGPU RAS Support
- ====================
- The AMDGPU RAS interfaces are exposed via sysfs (for informational queries) and
- debugfs (for error injection).
- RAS debugfs/sysfs Control and Error Injection Interfaces
- ========================================================
- .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
- :doc: AMDGPU RAS debugfs control interface
- RAS Reboot Behavior for Unrecoverable Errors
- ============================================
- .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
- :doc: AMDGPU RAS Reboot Behavior for Unrecoverable Errors
- RAS Error Count sysfs Interface
- ===============================
- .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
- :doc: AMDGPU RAS sysfs Error Count Interface
- RAS EEPROM debugfs Interface
- ============================
- .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
- :doc: AMDGPU RAS debugfs EEPROM table reset interface
- RAS VRAM Bad Pages sysfs Interface
- ==================================
- .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
- :doc: AMDGPU RAS sysfs gpu_vram_bad_pages Interface
- Sample Code
- ===========
- Sample code for testing error injection can be found here:
- https://cgit.freedesktop.org/mesa/drm/tree/tests/amdgpu/ras_tests.c
- This is part of the libdrm amdgpu unit tests which cover several areas of the GPU.
- There are four sets of tests:
- RAS Basic Test
- The test verifies the RAS feature enabled status and makes sure the necessary sysfs and debugfs files
- are present.
- RAS Query Test
- This test checks the RAS availability and enablement status for each supported IP block as well as
- the error counts.
- RAS Inject Test
- This test injects errors for each IP.
- RAS Disable Test
- This test tests disabling of RAS features for each IP block.
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