[hardware][misc] introduce platform abstraction (#6080)

vllm/attention/ops/blocksparse_attention/interface.py

@@ -2,13 +2,14 @@ import math
 
 import torch
 
-from vllm.utils import get_device_capability_stateless, is_cpu, is_hip
+from vllm.platforms import current_platform
+from vllm.utils import is_cpu, is_hip
 
 from .utils import (dense_to_crow_col, get_head_sliding_step,
                     get_sparse_attn_mask)
 
 IS_COMPUTE_8_OR_ABOVE = (torch.cuda.is_available()
-                         and get_device_capability_stateless()[0] >= 8)
+                         and current_platform.get_device_capability()[0] >= 8)
 
 if IS_COMPUTE_8_OR_ABOVE:
     from .blocksparse_attention_kernel import blocksparse_flash_attn_varlen_fwd