Top Function Declaration - Top Function Declaration - 2025.2 English - XD100

Vitis Tutorials: AI Engine Development (XD100)
Document ID
XD100
Release Date
2026-03-27
Version
2025.2 English

The dma_hls kernel takes the following arguments. These arguments are declared in dma_hls.h:

int dma_hls(
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A0,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A1,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A2,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A3,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A4,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A5,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A6,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_A7,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B0,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B1,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B2,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B3,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B4,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B5,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B6,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B7,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B8,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B9,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B10,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B11,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B12,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B13,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B14,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B15,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B16,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B17,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B18,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B19,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B20,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B21,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B22,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmOut_to_B23,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmInp_from_C0,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmInp_from_C1,
   hls::stream<ap_axiu<128, 0, 0, 0>> &strmInp_from_C2,
   ap_int<32> matSz_A, ap_int<32> matSz_B, ap_int<32> matSz_C
   );

  • ap_int<N> is an arbitrary precision integer data type defined in ap_int.h where N is a bit size from 1-1024. In this design, the bit size is 128.

  • hls::stream<ap_axiu<D,0,0,0>> is a data type defined in ap_axi_sdata.h. It is a special data class used for data transfer when using a streaming platform. The parameter <D> is the data width of the streaming interface. This is set to 128. The remaining three parameters are set to 0.