1 ==================== 2 AMDGPU RAS Support 3 ==================== 4 5 The AMDGPU RAS interfaces are exposed via sysfs (for informational queries) and 6 debugfs (for error injection). 7 8 RAS debugfs/sysfs Control and Error Injection Interfaces 9 ======================================================== 10 11 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 12 :doc: AMDGPU RAS debugfs control interface 13 14 RAS Reboot Behavior for Unrecoverable Errors 15 ============================================ 16 17 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 18 :doc: AMDGPU RAS Reboot Behavior for Unrecoverable Errors 19 20 RAS Error Count sysfs Interface 21 =============================== 22 23 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 24 :doc: AMDGPU RAS sysfs Error Count Interface 25 26 RAS EEPROM debugfs Interface 27 ============================ 28 29 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 30 :doc: AMDGPU RAS debugfs EEPROM table reset interface 31 32 RAS VRAM Bad Pages sysfs Interface 33 ================================== 34 35 .. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c 36 :doc: AMDGPU RAS sysfs gpu_vram_bad_pages Interface 37 38 Sample Code 39 =========== 40 Sample code for testing error injection can be found here: 41 https://cgit.freedesktop.org/mesa/drm/tree/tests/amdgpu/ras_tests.c 42 43 This is part of the libdrm amdgpu unit tests which cover several areas of the GPU. 44 There are four sets of tests: 45 46 RAS Basic Test 47 48 The test verifies the RAS feature enabled status and makes sure the necessary sysfs and debugfs files 49 are present. 50 51 RAS Query Test 52 53 This test checks the RAS availability and enablement status for each supported IP block as well as 54 the error counts. 55 56 RAS Inject Test 57 58 This test injects errors for each IP. 59 60 RAS Disable Test 61 62 This test tests disabling of RAS features for each IP block.
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