load d0 to lds

include/ck/tensor_operation/gpu/grid/gridwise_batched_mha_bwd_xdl_cshuffle_qloop_b2t_v2.hpp

@@ -1229,7 +1229,7 @@ struct GridwiseBatchedMultiheadAttentionBackward_Qloop_Xdl_CShuffle_V2
     __device__ static void
     Run(const InputDataType* __restrict__ p_q_grid,
         const InputDataType* __restrict__ p_k_grid,
-        const D0DataType* __restrict__ p_d_grid,
+        const D0DataType* __restrict__ p_d0_grid,
         ZDataType* __restrict__ p_z_grid,
         const InputDataType* __restrict__ p_v_grid,
         const InputDataType* __restrict__ p_y_grid,
@@ -1262,8 +1262,6 @@ struct GridwiseBatchedMultiheadAttentionBackward_Qloop_Xdl_CShuffle_V2
         const index_t raw_n_padded,
         const index_t block_idx_n)
     {
-        ignore                        = d0_grid_desc_m0_n0_m1_m2_n1_m3;
-        ignore                        = p_d_grid;
         const FloatGemmAcc p_dropout  = type_convert<FloatGemmAcc>(1.0f - p_drop);
         const FloatGemmAcc rp_dropout = type_convert<FloatGemmAcc>(1.0f / p_dropout);
         const ushort p_dropout_in_16bits =
@@ -1940,6 +1938,29 @@ struct GridwiseBatchedMultiheadAttentionBackward_Qloop_Xdl_CShuffle_V2
             block_sync_lds(); // wait for lds read in gemm0 blockwise gemm
 
             // add bias
+            if constexpr(!is_same<D0DataType, void>::value)
+            {
+                const auto d0_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_d0_grid, d0_grid_desc_m0_n0_m1_m2_n1_m3.GetElementSpaceSize());
+
+                auto d0_block_buf = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<GemmDataType*>(p_shared) + SharedMemTrait::a_block_space_offset,
+                    D0Loader::d0_block_desc_m0_n0_m1_m2_n1_m3.GetElementSpaceSize());
+
+                static_for<0, D0M1, 1>{}([&](auto) {
+                    d0_block_copy_global_to_lds.RunRead(d0_grid_desc_m0_n0_m1_m2_n1_m3,
+                                                        d0_grid_buf);
+
+                    d0_block_copy_global_to_lds.MoveSrcSliceWindow(
+                        d0_grid_desc_m0_n0_m1_m2_n1_m3, make_multi_index(0, 0, 1, 0, 0, 0));
+                        
+                    d0_block_copy_global_to_lds.RunWrite(D0Loader::d0_block_desc_m0_n0_m1_m2_n1_m3,
+                                                         d0_block_buf);
+                });
+
+                d0_block_copy_global_to_lds.MoveSrcSliceWindow(
+                    d0_grid_desc_m0_n0_m1_m2_n1_m3, make_multi_index(1, 0, -D0M1.value, 0, 0, 0));
+            }
 
             // P_i: = softmax(scalar * S_i:)
             // scaling is already performed in the preceding statements with s_element_op