Vitis Flow (Kernel Mode) - 2021.2 English

Vitis High-Level Synthesis User Guide (UG1399)

Document ID
UG1399
ft:locale
English (United States)
Release Date
2021-12-15
Version
2021.2 English

If HLS is used in the Vitis flow, the tool will automatically set the following configurations.

open_solution -flow_target vitis
Table 1. Argument Types
Argument Type Scalar Pointer to an Array Hls::stream
Interface Mode Input Return I I/O O I and O
ap_ctrl_none            
ap_ctrl_hs            
ap_ctrl_chain   D        
axis           D
m_axi     D D D  
  1. D = Default Interface

The AXI4-Lite slave interface directive will change the behavior of the interface pragmas as shown below.

config_interface -default_slave_interface s_axilite
Table 2. Argument Types
Argument Type Scalar Pointer to an Array Hls::stream
Interface Mode Input Return I I/O O I and O
s_axi_lite D D D D D  
  1. D = Default Interface
Note: These default interface pragma settings can be overridden by a user-specified interface pragma.