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qaztronic |
//////////////////////////////////////////////////////////////////////
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//// ////
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//// Copyright (C) 2017 Authors and OPENCORES.ORG ////
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//// ////
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//// This source file may be used and distributed without ////
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//// restriction provided that this copyright statement is not ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer. ////
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//// ////
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//// This source file is free software; you can redistribute it ////
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//// and/or modify it under the terms of the GNU Lesser General ////
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//// Public License as published by the Free Software Foundation; ////
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//// either version 2.1 of the License, or (at your option) any ////
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//// later version. ////
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//// ////
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//// This source is distributed in the hope that it will be ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
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//// PURPOSE. See the GNU Lesser General Public License for more ////
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//// details. ////
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//// ////
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//// You should have received a copy of the GNU Lesser General ////
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//// Public License along with this source; if not, download it ////
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//// from http://www.opencores.org/lgpl.shtml ////
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//// ////
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//////////////////////////////////////////////////////////////////////
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// --------------------------------------------------------------------
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//
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package axis_pkg;
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// --------------------------------------------------------------------
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//
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import uvm_pkg::*;
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`include "uvm_macros.svh"
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import bfm_pkg::*;
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// --------------------------------------------------------------------
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//
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typedef struct
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{
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int unsigned N; // data bus width in bytes
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int unsigned I; // TID width
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int unsigned D; // TDEST width
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int unsigned U; // TUSER width
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bit USE_TSTRB; // set to 1 to enable, 0 to disable
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bit USE_TKEEP; // set to 1 to enable, 0 to disable
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bit USE_ROUTING; // set to 1 to enable, 0 to disable
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} axis_config_t;
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// --------------------------------------------------------------------
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//
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class axis_sequence_item #(axis_config_t cfg)
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extends uvm_sequence_item;
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`uvm_object_param_utils(axis_sequence_item #(cfg))
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// --------------------------------------------------------------------
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//
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localparam N = cfg.N;
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localparam I = cfg.I;
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localparam D = cfg.D;
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localparam U = cfg.U;
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localparam USE_TSTRB = cfg.USE_TSTRB;
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localparam USE_TKEEP = cfg.USE_TKEEP;
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localparam USE_ROUTING = cfg.USE_ROUTING;
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// --------------------------------------------------------------------
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//
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delay_class delay_h;
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rand logic [(8*N)-1:0] tdata;
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rand logic [N-1:0] tstrb;
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rand logic [N-1:0] tkeep;
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rand logic tlast;
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rand logic [I-1:0] tid;
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rand logic [D-1:0] tdest;
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rand logic [U-1:0] tuser;
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// --------------------------------------------------------------------
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//
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function new(string name = "");
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super.new(name);
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delay_h = new;
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endfunction : new
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// --------------------------------------------------------------------
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//
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function bit do_compare(uvm_object rhs, uvm_comparer comparer);
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axis_sequence_item #(cfg) tested;
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bit same;
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if (rhs==null)
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`uvm_fatal(get_type_name(), "| %m | comparison to a null pointer");
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if (!$cast(tested,rhs))
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same = 0;
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else
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same = super.do_compare(rhs, comparer)
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& (tested.tdata == tdata)
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& (USE_TSTRB ? (tested.tstrb == tstrb) : 1)
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& (USE_TKEEP ? (tested.tkeep == tkeep) : 1)
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& (tested.tlast == tlast)
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& (USE_ROUTING ? (tested.tid == tid) : 1)
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& (USE_ROUTING ? (tested.tdest == tdest) : 1)
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& (tested.tuser == tuser);
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return same;
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endfunction : do_compare
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// --------------------------------------------------------------------
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//
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function void do_copy(uvm_object rhs);
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axis_sequence_item #(cfg) item;
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assert(rhs != null) else
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`uvm_fatal(get_type_name(), "| %m | copy null transaction");
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super.do_copy(rhs);
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assert($cast(item,rhs)) else
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`uvm_fatal(get_type_name(), "| %m | failed cast");
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tdata = item.tdata;
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tstrb = item.tstrb;
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tkeep = item.tkeep;
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tlast = item.tlast;
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tid = item.tid;
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tdest = item.tdest;
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tuser = item.tuser;
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endfunction : do_copy
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// --------------------------------------------------------------------
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//
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function string convert2string();
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string s0, s1;
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s0 = $sformatf("| tdata: %h\n" ,tdata);
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s1 = $sformatf("| tlast: %1h | tuser: %h" , tlast, tuser);
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return {s1, s0};
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endfunction : convert2string
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// --------------------------------------------------------------------
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//
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endclass : axis_sequence_item
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// --------------------------------------------------------------------
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//
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class axis_driver #(parameter axis_config_t cfg)
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extends uvm_driver #(axis_sequence_item #(cfg));
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`uvm_component_param_utils(axis_driver#(cfg))
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// --------------------------------------------------------------------
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//
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localparam N = cfg.N;
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localparam I = cfg.I;
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localparam D = cfg.D;
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localparam U = cfg.U;
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localparam USE_TSTRB = cfg.USE_TSTRB;
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localparam USE_TKEEP = cfg.USE_TKEEP;
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localparam USE_ROUTING = cfg.USE_ROUTING;
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// --------------------------------------------------------------------
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//
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virtual axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_bus;
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//--------------------------------------------------------------------
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//
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function void set_default;
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axis_bus.cb_m.tvalid <= 0;
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axis_bus.cb_m.tdata <= 'bx;
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axis_bus.cb_m.tstrb <= 'bx;
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axis_bus.cb_m.tkeep <= 'bx;
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axis_bus.cb_m.tlast <= 'bx;
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axis_bus.cb_m.tid <= 'bx;
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axis_bus.cb_m.tdest <= 'bx;
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axis_bus.cb_m.tuser <= 'bx;
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endfunction: set_default
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//--------------------------------------------------------------------
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//
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virtual task run_phase(uvm_phase phase);
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axis_sequence_item #(cfg) item;
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super.run_phase(phase);
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set_default();
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wait(~axis_bus.aresetn);
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@(axis_bus.cb_m);
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forever
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begin
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// seq_item_port.try_next_item(item);
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seq_item_port.get_next_item(item);
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axis_bus.cb_m.tvalid <= 1;
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axis_bus.cb_m.tdata <= item.tdata;
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axis_bus.cb_m.tstrb <= 0;
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axis_bus.cb_m.tkeep <= 0;
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axis_bus.cb_m.tlast <= item.tlast;
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axis_bus.cb_m.tid <= 0;
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axis_bus.cb_m.tdest <= 0;
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axis_bus.cb_m.tuser <= item.tuser;
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@(axis_bus.cb_m);
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wait(axis_bus.cb_m.tready);
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// @(axis_bus.cb_m iff axis_bus.cb_m.tready);
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set_default();
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repeat(item.delay_h.next()) @(axis_bus.cb_m);
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seq_item_port.item_done();
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end
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endtask : run_phase
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//--------------------------------------------------------------------
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//
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function new(string name, uvm_component parent);
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super.new(name, parent);
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endfunction
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// --------------------------------------------------------------------
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//
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endclass : axis_driver
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// --------------------------------------------------------------------
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//
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class axis_sequencer #(axis_config_t cfg)
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extends uvm_sequencer #(axis_sequence_item #(cfg));
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`uvm_component_param_utils(axis_sequencer #(cfg))
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// --------------------------------------------------------------------
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//
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function new(string name, uvm_component parent);
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super.new(name, parent);
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endfunction
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// --------------------------------------------------------------------
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//
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endclass : axis_sequencer
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// --------------------------------------------------------------------
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//
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class axis_counting_sequence #(axis_config_t cfg)
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extends uvm_sequence #(axis_sequence_item #(cfg));
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`uvm_object_param_utils(axis_counting_sequence #(cfg))
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rand int length = 16;
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// --------------------------------------------------------------------
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//
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virtual task body();
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axis_sequence_item #(cfg) item;
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for(int i = 0; i < length; i++)
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begin
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item = axis_sequence_item #(cfg)::type_id::create("axis_sequence_item");
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item.tdata = i;
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item.tlast = (i == length - 1);
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start_item (item);
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finish_item(item);
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end
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endtask
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// --------------------------------------------------------------------
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//
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function new(string name = "axis_counting_sequence");
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super.new(name);
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endfunction
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// --------------------------------------------------------------------
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//
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endclass : axis_counting_sequence
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// --------------------------------------------------------------------
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//
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class axis_agent #(axis_config_t cfg)
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extends uvm_agent;
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`uvm_component_param_utils(axis_agent #(cfg))
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// --------------------------------------------------------------------
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//
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localparam N = cfg.N;
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localparam I = cfg.I;
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localparam D = cfg.D;
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localparam U = cfg.U;
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localparam USE_TSTRB = cfg.USE_TSTRB;
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localparam USE_TKEEP = cfg.USE_TKEEP;
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localparam USE_ROUTING = cfg.USE_ROUTING;
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// --------------------------------------------------------------------
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//
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virtual axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_bus;
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axis_driver #(cfg) driver;
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// my_monitor #(cfg) monitor;
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axis_sequencer #(cfg) sequencer;
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// --------------------------------------------------------------------
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//
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virtual function void build_phase(uvm_phase phase);
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super.build_phase(phase);
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if(!uvm_config_db #(virtual axis_if #(.N(N), .I(I), .D(D), .U(U)))::get(this, "", "axis_bus", axis_bus))
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`uvm_fatal(get_name(), "Couldn't get virtual interface!")
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driver = axis_driver #(cfg)::type_id::create("driver", this);
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// monitor = my_monitor #(cfg)::type_id::create("monitor" , this);
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sequencer = axis_sequencer #(cfg)::type_id::create("sequencer", this);
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endfunction
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// --------------------------------------------------------------------
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//
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virtual function void connect_phase(uvm_phase phase);
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super.connect_phase(phase);
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driver.axis_bus = axis_bus;
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// monitor.vif = vif;
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driver.seq_item_port.connect(sequencer.seq_item_export);
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endfunction
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// --------------------------------------------------------------------
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//
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function new(string name, uvm_component parent);
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super.new(name, parent);
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endfunction
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// --------------------------------------------------------------------
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//
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endclass : axis_agent
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// --------------------------------------------------------------------
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//
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endpackage: axis_pkg
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