[OpenVINO] Add cache_position input inside prepare_inputs method for Mamba (#1517)

Author: nikita-savelyevv

optimum/intel/openvino/modeling_decoder.py

@@ -1295,15 +1295,20 @@ def _has_cache_inputs(model: openvino.Model) -> bool:
             "past_key_values" in key.get_any_name() or "cache_params" in key.get_any_name() for key in model.inputs
         )
 
-    def forward(
+    def prepare_inputs(
         self,
-        input_ids: Optional[torch.LongTensor] = None,
+        input_ids: torch.LongTensor,
         attention_mask: Optional[torch.LongTensor] = None,
         cache_params=None,
         use_cache: Optional[bool] = None,
         cache_position: Optional[torch.Tensor] = None,
         **kwargs,
-    ):
+    ) -> Dict:
+        if kwargs.get("past_key_values") is not None:
+            raise ValueError("`past_key_values` input is not supported for `OVModelWithMambaForCausalLM`")
+        if kwargs.get("position_ids") is not None:
+            raise ValueError("`position_ids` input is not supported for `OVModelWithMambaForCausalLM`")
+
         inputs = {"input_ids": input_ids}
         if "cache_position" in self.input_names:
             if cache_position is None:
@@ -1340,6 +1345,19 @@ def forward(
             batch_size = input_ids.shape[0]
             inputs["beam_idx"] = np.arange(batch_size, dtype=int)
 
+        return inputs
+
+    def forward(
+        self,
+        input_ids: Optional[torch.LongTensor] = None,
+        attention_mask: Optional[torch.LongTensor] = None,
+        cache_params=None,
+        use_cache: Optional[bool] = None,
+        cache_position: Optional[torch.Tensor] = None,
+        **kwargs,
+    ):
+        inputs = self.prepare_inputs(input_ids, attention_mask, cache_params, use_cache, cache_position, **kwargs)
+
         self.request.start_async(inputs, share_inputs=True)
         self.request.wait()
         logits = torch.from_numpy(self.request.get_tensor("logits").data).to(self.device)