drm/amdgpu: add ioctl query for enabled ras features (v2)

Add a query for userspace to check which RAS features
are enabled.

v2: squash in warning fix

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 4d0ccca891cb..df40f35db89c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -39,6 +39,7 @@
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_gem.h"
 #include "amdgpu_display.h"
+#include "amdgpu_ras.h"
 
 static void amdgpu_unregister_gpu_instance(struct amdgpu_device *adev)
 {
@@ -919,6 +920,15 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
         case AMDGPU_INFO_VRAM_LOST_COUNTER:
                 ui32 = atomic_read(&adev->vram_lost_counter);
                 return copy_to_user(out, &ui32, min(size, 4u)) ? -EFAULT : 0;
+        case AMDGPU_INFO_RAS_ENABLED_FEATURES: {
+                struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
+
+                if (!ras)
+                        return -EINVAL;
+                return copy_to_user(out, &ras->features,
+                                min_t(u32, size, sizeof(ras->features))) ?
+                        -EFAULT : 0;
+        }
         default:
                 DRM_DEBUG_KMS("Invalid request %d\n", info->query);
                 return -EINVAL;