rtl: add axis iface

axi/rtl/axis_flat_to_if.sv

@@ -0,0 +1,30 @@
+module axis_flat_to_if #(
+  parameter int unsigned DATA_W = 64,
+  parameter int unsigned KEEP_W = DATA_W / 8,
+  parameter int unsigned ID_W   = 8,
+  parameter int unsigned DEST_W = 8,
+  parameter int unsigned USER_W = 1
+)(
+  input  logic [DATA_W-1:0] s_axis_tdata,
+  input  logic [KEEP_W-1:0] s_axis_tkeep,
+  input  logic [KEEP_W-1:0] s_axis_tstrb,
+  input  logic              s_axis_tlast,
+  input  logic [ID_W-1:0]   s_axis_tid,
+  input  logic [DEST_W-1:0] s_axis_tdest,
+  input  logic [USER_W-1:0] s_axis_tuser,
+  input  logic              s_axis_tvalid,
+  output logic              s_axis_tready,
+
+  axis_if.master            m_axis
+);
+  assign m_axis.req.t.data  = s_axis_tdata;
+  assign m_axis.req.t.keep  = s_axis_tkeep;
+  assign m_axis.req.t.strb  = s_axis_tstrb;
+  assign m_axis.req.t.last  = s_axis_tlast;
+  assign m_axis.req.t.id    = s_axis_tid;
+  assign m_axis.req.t.dest  = s_axis_tdest;
+  assign m_axis.req.t.user  = s_axis_tuser;
+  assign m_axis.req.t.valid = s_axis_tvalid;
+
+  assign s_axis_tready = m_axis.resp.ready;
+endmodule : axis_flat_to_if