drm/amdgpu: fix vf error handling
The error handling for virtual functions assumed a single
vf per VM and didn't properly account for bare metal. Make
the error arrays per device and add locking.
Reviewed-by: Gavin Wan <gavin.wan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
index afcfb8b..e5fd0ff 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h
@@ -36,6 +36,18 @@ struct amdgpu_mm_table {
uint64_t gpu_addr;
};
+#define AMDGPU_VF_ERROR_ENTRY_SIZE 16
+
+/* struct error_entry - amdgpu VF error information. */
+struct amdgpu_vf_error_buffer {
+ struct mutex lock;
+ int read_count;
+ int write_count;
+ uint16_t code[AMDGPU_VF_ERROR_ENTRY_SIZE];
+ uint16_t flags[AMDGPU_VF_ERROR_ENTRY_SIZE];
+ uint64_t data[AMDGPU_VF_ERROR_ENTRY_SIZE];
+};
+
/**
* struct amdgpu_virt_ops - amdgpu device virt operations
*/
@@ -59,6 +71,7 @@ struct amdgpu_virt {
struct work_struct flr_work;
struct amdgpu_mm_table mm_table;
const struct amdgpu_virt_ops *ops;
+ struct amdgpu_vf_error_buffer vf_errors;
};
#define AMDGPU_CSA_SIZE (8 * 1024)