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