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¶
Error
kernel-doc missing
RAS Reboot Behavior for Unrecoverable Errors¶
Error
kernel-doc missing
RAS Error Count sysfs Interface¶
Error
kernel-doc missing
RAS EEPROM debugfs Interface¶
Error
kernel-doc missing
RAS VRAM Bad Pages sysfs Interface¶
Error
kernel-doc missing
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.