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URL https://opencores.org/ocsvn/qaz_libs/qaz_libs/trunk

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  • This comparison shows the changes necessary to convert path 
    /qaz_libs/trunk/axi4_lib
    from Rev 30 to Rev 31
    ↔ Reverse comparison
  •

Rev 30 → Rev 31

/sim/libs/sim_verilog/axi4_bfm.f File deleted
/sim/libs/sim_verilog/tb_lib.f File deleted
/sim/libs/axi4_lib_verilog/axi4_base.f File deleted
/sim/libs/axi4_lib_verilog/tiny_fifo.f File deleted
/sim/libs/axi4_lib_verilog/axi4_stream_lib.f File deleted
/sim/libs/packages_verilog/tb_lib.f File deleted
/sim/src/BP065-BU-01000-r0p1-00rel0/BP065-BU-01000-r0p1-00rel0.txt
0,0 → 1,6
 
 
 
goto http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0576b/index.html to download. requires
an free account to login.
 
/sim/src/BP065-BU-01000-r0p1-00rel0/axi4_checker.sv
38,8 → 38,7
MAXWAITS = 16,
RecommendOn = 1'b1,
RecMaxWaitOn = 1'b1,
EXMON_WIDTH = 4,
PROTOCOL = 2'b00
EXMON_WIDTH = 4
)
(
axi4_if axi4_in
165,11 → 164,7
.RecMaxWaitOn(RecMaxWaitOn), // = 1'b1;
 
// Set the protocol - used to disable some AXI4 checks for ACE
//PROTOCOL define the protocol
// `define AXI4PC_AMBA_AXI4 2'b00
// `define AXI4PC_AMBA_ACE 2'b01
// `define AXI4PC_AMBA_ACE_LITE 2'b10
.PROTOCOL(PROTOCOL), // = `AXI4PC_AMBA_AXI4;
// .PROTOCOL(PROTOCOL), // = `AXI4PC_AMBA_AXI4;
 
// Set ADDR_WIDTH to the address-bus width required
.ADDR_WIDTH(A), // = 32; // address bus width, default = 32-bit
/sim/src/axi4_bfm_pkg.sv
0,0 → 1,563
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
// --------------------------------------------------------------------
//
package axi4_bfm_pkg;
 
// --------------------------------------------------------------------
//
import tb_bfm_pkg::*;
import axi4_transaction_pkg::*;
 
 
// --------------------------------------------------------------------
//
class ar_master_transaction_class #(A = 32, N = 8, I = 1)
extends tb_blocking_transaction_q_class #(axi4_transaction_class #(.A(A), .N(N), .I(I)));
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
super.new();
this.axi4_m = axi4_m;
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
ar_default;
 
axi4_m.cb_m.araddr <= 'bx;
axi4_m.cb_m.arburst <= 'bx;
axi4_m.cb_m.arcache <= 'bx;
axi4_m.cb_m.arid <= 'bx;
axi4_m.cb_m.arlen <= 'bx;
axi4_m.cb_m.arlock <= 'bx;
axi4_m.cb_m.arprot <= 'bx;
axi4_m.cb_m.arqos <= 'bx;
axi4_m.cb_m.arregion <= 'bx;
axi4_m.cb_m.arsize <= 'bx;
axi4_m.cb_m.arvalid <= 0;
 
endfunction: ar_default
 
 
// --------------------------------------------------------------------
//
task automatic
transaction
(
ref T tr_h
);
 
->this.start;
 
repeat(tr_h.delay_h.next()) @(axi4_m.cb_m);
 
axi4_m.cb_m.araddr <= tr_h.addr;
axi4_m.cb_m.arid <= tr_h.id;
axi4_m.cb_m.arlen <= tr_h.len;
axi4_m.cb_m.arsize <= tr_h.size;
 
axi4_m.cb_m.arburst <= tr_h.burst;
axi4_m.cb_m.arcache <= tr_h.cache;
axi4_m.cb_m.arlock <= tr_h.lock;
axi4_m.cb_m.arprot <= tr_h.prot;
axi4_m.cb_m.arqos <= tr_h.qos;
axi4_m.cb_m.arregion <= tr_h.region;
axi4_m.cb_m.arvalid <= 1;
 
$display("^^^ %16.t | %m | master AR transaction @ 0x%08x |", $time, tr_h.addr);
 
repeat(1) @(axi4_m.cb_m);
wait(axi4_m.cb_m.arready);
 
axi4_m.zero_cycle_delay();
ar_default();
 
->this.done;
 
endtask: transaction
 
 
// --------------------------------------------------------------------
//
endclass: ar_master_transaction_class
 
 
// --------------------------------------------------------------------
//
class r_master_transaction_class #(A = 32, N = 8, I = 1)
extends tb_blocking_transaction_q_class #(axi4_transaction_class #(.A(A), .N(N), .I(I)));
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
super.new();
this.axi4_m = axi4_m;
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
r_default;
 
axi4_m.cb_m.rready <= 0;
 
endfunction: r_default
 
 
// --------------------------------------------------------------------
//
task automatic
transaction
(
ref T tr_h
);
 
->this.start;
 
tr_h.data_h = new(tr_h.len);
 
foreach(tr_h.payload_h.w[i])
begin
repeat(tr_h.delay_h.next()) @(axi4_m.cb_m);
axi4_m.cb_m.rready <= 1;
repeat(1) @(axi4_m.cb_m);
 
wait(axi4_m.cb_m.rvalid);
axi4_m.zero_cycle_delay();
 
tr_h.data_h.w[i] = axi4_m.cb_m.rdata;
 
$display("^^^ %16.t | %m | master R transaction | %d | 0x%016x |", $time, i, tr_h.data_h.w[i]);
r_default();
end
 
->this.done;
 
endtask: transaction
 
 
// --------------------------------------------------------------------
//
endclass: r_master_transaction_class
 
 
// --------------------------------------------------------------------
//
class aw_master_transaction_class #(A = 32, N = 8, I = 1)
extends tb_blocking_transaction_q_class #(axi4_transaction_class #(.A(A), .N(N), .I(I)));
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
super.new();
this.axi4_m = axi4_m;
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
aw_default;
 
axi4_m.cb_m.awaddr <= 'bx;
axi4_m.cb_m.awburst <= 'bx;
axi4_m.cb_m.awcache <= 'bx;
axi4_m.cb_m.awid <= 'bx;
axi4_m.cb_m.awlen <= 'bx;
axi4_m.cb_m.awlock <= 'bx;
axi4_m.cb_m.awprot <= 'bx;
axi4_m.cb_m.awqos <= 'bx;
axi4_m.cb_m.awregion <= 'bx;
axi4_m.cb_m.awsize <= 'bx;
axi4_m.cb_m.awvalid <= 0;
 
endfunction: aw_default
 
// --------------------------------------------------------------------
//
task automatic
transaction
(
ref T tr_h
);
 
->this.start;
 
repeat(tr_h.delay_h.next()) @(axi4_m.cb_m);
 
axi4_m.cb_m.awaddr <= tr_h.addr;
axi4_m.cb_m.awid <= tr_h.id;
axi4_m.cb_m.awlen <= tr_h.len;
axi4_m.cb_m.awsize <= tr_h.size;
 
axi4_m.cb_m.awburst <= tr_h.burst;
axi4_m.cb_m.awcache <= tr_h.cache;
axi4_m.cb_m.awlock <= tr_h.lock;
axi4_m.cb_m.awprot <= tr_h.prot;
axi4_m.cb_m.awqos <= tr_h.qos;
axi4_m.cb_m.awregion <= tr_h.region;
axi4_m.cb_m.awvalid <= 1;
 
$display("^^^ %16.t | %m | master AW transaction @ 0x%08x |", $time, tr_h.addr);
 
repeat(1) @(axi4_m.cb_m);
wait(axi4_m.cb_m.awready);
 
axi4_m.zero_cycle_delay();
aw_default();
 
->this.done;
 
endtask: transaction
 
 
// --------------------------------------------------------------------
//
endclass: aw_master_transaction_class
 
 
// --------------------------------------------------------------------
//
class w_master_transaction_class #(A = 32, N = 8, I = 1)
extends tb_blocking_transaction_q_class #(axi4_transaction_class #(.A(A), .N(N), .I(I)));
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
super.new();
this.axi4_m = axi4_m;
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
w_default;
 
axi4_m.cb_m.wdata <= 'bx;
axi4_m.cb_m.wlast <= 'bx;
axi4_m.cb_m.wstrb <= {N{1'b1}};
axi4_m.cb_m.wvalid <= 0;
 
endfunction: w_default
 
 
// --------------------------------------------------------------------
//
task automatic
transaction
(
ref T tr_h
);
 
->this.start;
 
foreach(tr_h.payload_h.w[i])
begin
repeat(tr_h.delay_h.next()) @(axi4_m.cb_m);
 
axi4_m.cb_m.wdata <= tr_h.payload_h.w[i];
// axi4_m.cb_m.wstrb <= tr_h.strb; // need to fix
 
if(i < tr_h.payload_h.w.size - 1)
axi4_m.cb_m.wlast <= 0;
else
axi4_m.cb_m.wlast <= 1;
 
axi4_m.cb_m.wvalid <= 1;
 
repeat(1) @(axi4_m.cb_m);
wait(axi4_m.cb_m.wready);
 
axi4_m.zero_cycle_delay();
$display("^^^ %16.t | %m | master W transaction | %d | 0x%016x |", $time, i, tr_h.payload_h.w[i]);
w_default();
end
 
->this.done;
 
endtask: transaction
 
 
// --------------------------------------------------------------------
//
endclass: w_master_transaction_class
 
 
// --------------------------------------------------------------------
//
class b_master_transaction_class #(A = 32, N = 8, I = 1)
extends tb_blocking_transaction_q_class #(axi4_transaction_class #(.A(A), .N(N), .I(I)));
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
super.new();
this.axi4_m = axi4_m;
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
b_default;
 
axi4_m.cb_m.bready <= 0;
 
endfunction: b_default
 
 
// --------------------------------------------------------------------
//
task automatic
transaction
(
ref T tr_h
);
 
->this.start;
 
repeat(tr_h.delay_h.next()) @(axi4_m.cb_m);
axi4_m.cb_m.bready <= 1;
repeat(1) @(axi4_m.cb_m);
 
wait(axi4_m.cb_m.bvalid);
axi4_m.zero_cycle_delay();
 
$display("^^^ %16.t | %m | master B transaction | 0x%x |", $time, axi4_m.cb_m.bresp);
b_default();
 
->this.done;
 
endtask: transaction
 
 
// --------------------------------------------------------------------
//
endclass: b_master_transaction_class
 
 
// --------------------------------------------------------------------
//
class axi4_master_bfm_class #(A = 32, N = 8, I = 1);
 
ar_master_transaction_class #(.A(A), .N(N), .I(I)) ar_h;
r_master_transaction_class #(.A(A), .N(N), .I(I)) r_h;
aw_master_transaction_class #(.A(A), .N(N), .I(I)) aw_h;
w_master_transaction_class #(.A(A), .N(N), .I(I)) w_h;
b_master_transaction_class #(.A(A), .N(N), .I(I)) b_h;
 
axi4_transaction_class tr_h;
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
 
this.axi4_m = axi4_m;
 
ar_h = new(axi4_m);
r_h = new(axi4_m);
aw_h = new(axi4_m);
w_h = new(axi4_m);
b_h = new(axi4_m);
ar_h.init();
ar_h.ar_default();
 
r_h.init();
r_h.r_default();
 
aw_h.init();
aw_h.aw_default();
 
w_h.init();
w_h.w_default();
 
b_h.init();
b_h.b_default();
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
function void
init;
 
endfunction: init
 
 
// --------------------------------------------------------------------
//
task
basic_read
(
input logic [(A-1):0] araddr,
input logic [7:0] arlen,
output logic [(8*N)-1:0] data[],
output logic [1:0] rresp
);
 
this.tr_h = new;
this.tr_h.basic_read(araddr, arlen);
 
ar_h.put(tr_h);
r_h.put(tr_h);
 
@(r_h.done);
data = tr_h.data_h.w;
rresp = tr_h.resp;
 
endtask: basic_read
 
// --------------------------------------------------------------------
//
task
basic_random_read_burst
(
output logic [(8*N)-1:0] data[],
output logic [1:0] rresp
);
 
this.tr_h = new;
this.tr_h.basic_random_burst;
 
ar_h.put(tr_h);
r_h.put(tr_h);
 
@(r_h.done);
data = tr_h.data_h.w;
rresp = tr_h.resp;
 
endtask: basic_random_read_burst
 
 
// --------------------------------------------------------------------
//
task
basic_write
(
input logic [(A-1):0] awaddr,
input logic [7:0] awlen,
input logic [(8*N)-1:0] data[],
output logic [1:0] bresp
);
 
this.tr_h = new;
this.tr_h.basic_write(awaddr, awlen);
 
foreach(this.tr_h.payload_h.w[i])
this.tr_h.payload_h.w[i] = data[i];
 
aw_h.put(tr_h);
w_h.put(tr_h);
b_h.put(tr_h);
 
@(b_h.done);
bresp = tr_h.resp;
 
endtask: basic_write
 
// --------------------------------------------------------------------
//
task
basic_random_write_burst
(
output logic [1:0] bresp
);
 
this.tr_h = new;
this.tr_h.basic_random_burst;
 
aw_h.put(tr_h);
w_h.put(tr_h);
b_h.put(tr_h);
 
@(b_h.done);
bresp = tr_h.resp;
 
endtask: basic_random_write_burst
 
 
// --------------------------------------------------------------------
//
endclass: axi4_master_bfm_class
// --------------------------------------------------------------------
//
endpackage: axi4_bfm_pkg
 
 
/sim/src/axi4_models/axi4_arbiter_pkg.sv
0,0 → 1,474
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
package axi4_arbiter_pkg;
 
// --------------------------------------------------------------------
//
import axi4_models_pkg::*;
import bfm_pkg::*;
import logger_pkg::*;
 
 
// --------------------------------------------------------------------
//
virtual class base_request_class #(A, N, I);
 
string kind;
int id = -1;
 
//--------------------------------------------------------------------
//
pure virtual function void write_ax_if(axi4_channel_if_class #(A, N, I) channel);
pure virtual function void copy_ax_if(axi4_channel_if_class #(A, N, I) channel);
 
 
// --------------------------------------------------------------------
//
endclass: base_request_class
 
 
// --------------------------------------------------------------------
//
class write_request_class #(A, N, I)
extends base_request_class #(A, N, I);
 
logic [(A-1):0] awaddr;
logic [1:0] awburst;
logic [(I-1):0] awid;
logic [7:0] awlen;
logic [2:0] awsize;
logic [3:0] awcache;
logic awlock;
logic [2:0] awprot;
logic [3:0] awqos;
logic [3:0] awregion;
 
 
// --------------------------------------------------------------------
//
function void write_ax_if(axi4_channel_if_class #(A, N, I) channel);
axi4_aw_if_class #(A, N, I) aw_if_h;
$cast(aw_if_h, channel);
aw_if_h.awaddr = awaddr;
aw_if_h.awburst = awburst;
aw_if_h.awid = awid;
aw_if_h.awlen = awlen;
aw_if_h.awsize = awsize;
aw_if_h.awcache = awcache;
aw_if_h.awlock = awlock;
aw_if_h.awprot = awprot;
aw_if_h.awqos = awqos;
aw_if_h.awregion = awregion;
endfunction: write_ax_if
 
 
// --------------------------------------------------------------------
//
function void copy_ax_if(axi4_channel_if_class #(A, N, I) channel);
axi4_aw_if_class #(A, N, I) aw_if_h;
$cast(aw_if_h, channel);
awaddr = aw_if_h.awaddr;
awburst = aw_if_h.awburst;
awid = aw_if_h.awid;
awlen = aw_if_h.awlen;
awsize = aw_if_h.awsize;
awcache = aw_if_h.awcache;
awlock = aw_if_h.awlock;
awprot = aw_if_h.awprot;
awqos = aw_if_h.awqos;
awregion = aw_if_h.awregion;
endfunction: copy_ax_if
 
 
//--------------------------------------------------------------------
function new(int id);
super.new;
this.kind = "WRITE";
this.id = id;
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: write_request_class
 
 
// --------------------------------------------------------------------
//
class read_request_class #(A, N, I)
extends base_request_class #(A, N, I);
 
logic [(A-1):0] araddr;
logic [1:0] arburst;
logic [(I-1):0] arid;
logic [7:0] arlen;
logic [2:0] arsize;
logic [3:0] arcache;
logic arlock;
logic [2:0] arprot;
logic [3:0] arqos;
logic [3:0] arregion;
 
// --------------------------------------------------------------------
//
function void write_ax_if(axi4_channel_if_class #(A, N, I) channel);
axi4_ar_if_class #(A, N, I) ar_if_h;
$cast(ar_if_h, channel);
ar_if_h.araddr = araddr;
ar_if_h.arburst = arburst;
ar_if_h.arid = arid;
ar_if_h.arlen = arlen;
ar_if_h.arsize = arsize;
ar_if_h.arcache = arcache;
ar_if_h.arlock = arlock;
ar_if_h.arprot = arprot;
ar_if_h.arqos = arqos;
ar_if_h.arregion = arregion;
endfunction: write_ax_if
 
 
// --------------------------------------------------------------------
//
function void copy_ax_if(axi4_channel_if_class #(A, N, I) channel);
axi4_ar_if_class #(A, N, I) ar_if_h;
$cast(ar_if_h, channel);
araddr = ar_if_h.araddr;
arburst = ar_if_h.arburst;
arid = ar_if_h.arid;
arlen = ar_if_h.arlen;
arsize = ar_if_h.arsize;
arcache = ar_if_h.arcache;
arlock = ar_if_h.arlock;
arprot = ar_if_h.arprot;
arqos = ar_if_h.arqos;
arregion = ar_if_h.arregion;
endfunction: copy_ax_if
 
 
//--------------------------------------------------------------------
function new(int id);
super.new;
this.kind = "READ";
this.id = id;
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: read_request_class
 
 
// --------------------------------------------------------------------
//
class requester_class #(A, N, I)
extends axi4_slave_model_class #(A, N, I);
 
mailbox #(base_request_class #(A, N, I)) q;
semaphore read_done;
semaphore write_done;
int id = -1;
logger_class log;
 
 
// --------------------------------------------------------------------
//
task automatic run_read_interface;
read_request_class #(A, N, I) r_req_h;
read_done = new;
forever
@(axi4_s.cb_s)
begin
ar_q_h.q.get(ar_if_h);
log.debug($sformatf("%m | start"));
log.debug($sformatf("%m | araddr = 0x%h", ar_if_h.araddr));
log.debug($sformatf("%m | arlen = 0x%h", ar_if_h.arlen));
r_req_h = new(id);
r_req_h.copy_ax_if(ar_if_h);
q.put(r_req_h);
read_done.get();
log.debug($sformatf("%m | done"));
end
endtask: run_read_interface
 
 
// --------------------------------------------------------------------
//
task run_write_interface;
write_request_class #(A, N, I) w_req_h;
write_done = new;
forever
@(axi4_s.cb_s)
begin
aw_q_h.q.get(aw_if_h);
log.debug($sformatf("%m | start"));
log.debug($sformatf("%m | awaddr = 0x%h", aw_if_h.awaddr));
log.debug($sformatf("%m | awlen = 0x%h", aw_if_h.awlen));
w_req_h = new(id);
w_req_h.copy_ax_if(aw_if_h);
q.put(w_req_h);
write_done.get();
log.debug($sformatf("%m | done"));
end
endtask: run_write_interface
 
 
// --------------------------------------------------------------------
//
task run_model;
wait(axi4_s.cb_s.aresetn);
axi4_s.zero_cycle_delay();
 
aw_q_h.run_q();
w_q_h.run_q();
b_q_h.run_q();
ar_q_h.run_q();
r_q_h.run_q();
 
fork
run_read_interface();
join_none
 
fork
run_write_interface();
join_none
 
endtask: run_model
 
 
//--------------------------------------------------------------------
function new(int id, virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_s);
super.new(axi4_s);
this.aw_q_h = new(axi4_s, 2);
this.w_q_h = new(axi4_s, 16);
this.b_q_h = new(axi4_s, 2);
this.ar_q_h = new(axi4_s, 2);
this.r_q_h = new(axi4_s, 16);
this.id = id;
this.q = new(1);
this.log = new();
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: requester_class
 
 
// --------------------------------------------------------------------
//
class axi4_granter_class #(A, N, I)
extends axi4_master_model_class #(A, N, I);
 
logger_class log;
 
 
// --------------------------------------------------------------------
//
task run_model;
wait(axi4_m.cb_s.aresetn);
axi4_m.zero_cycle_delay();
 
aw_q_h.run_q();
w_q_h.run_q();
b_q_h.run_q();
ar_q_h.run_q();
r_q_h.run_q();
endtask: run_model
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m);
super.new(axi4_m);
this.aw_q_h = new(axi4_m, 2);
this.w_q_h = new(axi4_m, 16);
this.b_q_h = new(axi4_m, 2);
this.ar_q_h = new(axi4_m, 2);
this.r_q_h = new(axi4_m, 16);
this.log = new();
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_granter_class
 
 
// --------------------------------------------------------------------
//
class axi4_arbiter_class #(A, N, I);
 
axi4_granter_class #(A, N, I) g_h;
requester_class #(A, N, I) r_h[];
mailbox #(int) grant;
int count = -1;
int current = 0, previous;
logger_class log;
 
 
// --------------------------------------------------------------------
//
task automatic do_read(requester_class #(A, N, I) r_h);
int id;
read_request_class #(A, N, I) r_req_h;
base_request_class #(A, N, I) request;
log.debug($sformatf("%m | read grant for %d", r_h.id));
r_h.q.get(request);
$cast(r_req_h, request);
 
g_h.ar_if_h = new(g_h.axi4_m);
r_req_h.write_ax_if(g_h.ar_if_h);
g_h.ar_q_h.q.put(g_h.ar_if_h);
 
for(int i = 0; i < r_h.ar_if_h.arlen + 1; i++)
begin
g_h.r_if_h = new(g_h.axi4_m);
r_h.r_if_h = new(r_h.axi4_s);
g_h.r_q_h.q.get(g_h.r_if_h);
r_h.r_if_h.copy(g_h.r_if_h);
r_h.r_q_h.q.put(r_h.r_if_h);
@(r_h.axi4_s.cb_s);
end
 
r_h.read_done.put();
grant.get(id);
log.debug($sformatf("%m | read grant for %d done", id));
endtask: do_read
 
 
// --------------------------------------------------------------------
//
task automatic do_write(requester_class #(A, N, I) r_h);
int id;
write_request_class #(A, N, I) w_req_h;
base_request_class #(A, N, I) request;
log.debug($sformatf("%m | write grant for %d", r_h.id));
r_h.q.get(request);
$cast(w_req_h, request);
 
g_h.aw_if_h = new(g_h.axi4_m);
w_req_h.write_ax_if(g_h.aw_if_h);
g_h.aw_q_h.q.put(g_h.aw_if_h);
 
for(int i = 0; i < r_h.aw_if_h.awlen + 1; i++)
begin
r_h.w_if_h = new(r_h.axi4_s);
g_h.w_if_h = new(g_h.axi4_m);
r_h.w_q_h.q.get(r_h.w_if_h);
g_h.w_if_h.copy(r_h.w_if_h);
g_h.w_q_h.q.put(g_h.w_if_h);
@(r_h.axi4_s.cb_s);
end
 
g_h.b_q_h.q.get(g_h.b_if_h);
r_h.b_if_h = new(r_h.axi4_s);
r_h.b_if_h.copy(g_h.b_if_h);
r_h.b_q_h.q.put(r_h.b_if_h);
r_h.write_done.put();
grant.get(id);
log.debug($sformatf("%m | write grant for %d done", id));
endtask: do_write
 
 
// --------------------------------------------------------------------
//
task automatic give_grant(requester_class #(A, N, I) r_h);
base_request_class #(A, N, I) request;
grant.put(r_h.id);
r_h.q.peek(request);
log.debug($sformatf("%m | %d got grant for %s", r_h.id, request.kind));
 
if(request.kind.toupper == "WRITE")
do_write(r_h);
else if(request.kind.toupper == "READ")
do_read(r_h);
else
$stop;
 
current = (current + count + 1) % count;
log.debug($sformatf("%m | new current = %d", current));
endtask: give_grant
 
 
// --------------------------------------------------------------------
//
task automatic do_arbitration;
wait(g_h.axi4_m.cb_m.aresetn);
g_h.axi4_m.zero_cycle_delay();
forever
@(g_h.axi4_m.cb_m)
begin
for(int i = current; i < current + count; i++)
if(r_h[i % count].q.num > 0)
begin
give_grant(r_h[i % count]);
break;
end
end
endtask: do_arbitration
 
 
//--------------------------------------------------------------------
function void debug_enable;
log.debug_enable();
g_h.log.debug_enable();
foreach(r_h[i])
r_h[i].log.debug_enable();
endfunction: debug_enable
 
 
//--------------------------------------------------------------------
function new
(
virtual axi4_if #(A, N, I) axi4_s[],
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m
);
this.grant = new(1);
this.g_h = new(axi4_m);
this.count = axi4_s.size;
this.r_h = new[axi4_s.size];
this.log = new;
 
foreach(axi4_s[i])
r_h[i] = new(i, axi4_s[i]);
 
fork
do_arbitration();
join_none
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_arbiter_class
 
 
// --------------------------------------------------------------------
//
endpackage: axi4_arbiter_pkg
 
/sim/src/axi4_models/axi4_memory_pkg.sv
0,0 → 1,369
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
package axi4_memory_pkg;
 
// --------------------------------------------------------------------
//
import axi4_models_pkg::*;
import bfm_pkg::*;
import logger_pkg::*;
 
 
// --------------------------------------------------------------------
//
class memory_tr_class #(A, N, I, type WORD_T = byte)
extends transaction_class #(memory_tr_class #(A, N, I));
 
rand int addr;
rand int size;
rand byte data[];
 
constraint default_addr
{
addr[$clog2(N*8)-1:0] == 0;
}
 
constraint default_size
{
size dist {N := 40, [N*2:N*15] := 40, [N*16:N*255] := 20};
}
 
 
//--------------------------------------------------------------------
//
function void init(int addr, int size);
this.data = new[size];
this.addr = addr;
this.size = size;
endfunction: init
 
 
//--------------------------------------------------------------------
//
function void random(int addr, int size);
this.data = new[size];
assert(this.randomize() with
{
this.addr == addr; // why not working?
this.size == size;
});
this.addr = addr;
this.size = size;
endfunction: random
 
 
// --------------------------------------------------------------------
//
task constant(int addr, int size, byte value[]);
init(addr, size);
this.data = new[size];
for(int i = 0; i < size; i += value.size)
foreach(value[k])
data[i + k] = value[k];
endtask: constant
 
 
// --------------------------------------------------------------------
//
task automatic counting(int addr, int count);
byte word[];
int word_size = $bits(WORD_T) / 8; // word size in bytes
init(addr, count * word_size);
for(WORD_T i = 0; i < count; i++)
begin
word = {<< byte{i}};
foreach(word[k])
data[addr + (i * word_size) + k] = word[k];
end
endtask: counting
 
 
// --------------------------------------------------------------------
//
function void copy(TR_T from);
init(from.addr, from.size);
this.data = new[from.size];
foreach(from.data[i])
this.data[i] = from.data[i];
endfunction: copy
 
 
//--------------------------------------------------------------------
function new;
a_word_t_mod_n: assert($bits(WORD_T) % 8 == 0) else $fatal;
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: memory_tr_class
 
 
// --------------------------------------------------------------------
//
class axi4_memory_class #(A, N, I, type WORD_T = byte)
extends axi4_slave_model_class #(.A(A), .N(N), .I(I));
 
logger_class log;
byte memory [*];
 
 
// --------------------------------------------------------------------
//
function void clear_all;
memory.delete;
endfunction: clear_all
 
 
// --------------------------------------------------------------------
//
function void compare(memory_tr_class #(A, N, I, WORD_T) tr_h);
foreach(tr_h.data[i])
if(memory.exists(tr_h.addr + i))
begin
if(memory[tr_h.addr + i] != tr_h.data[i])
log.error($sformatf("%m | 1 memory[0x%8.h] = 0x%2.h | 0x%2.h", tr_h.addr + i, memory[tr_h.addr + i], tr_h.data[i]));
end
else
log.error($sformatf("%m | 2 memory[0x%8.h] = 0x%2.h | 0x%2.h", tr_h.addr + i, 'bx, tr_h.data[i]));
endfunction: compare
 
 
// --------------------------------------------------------------------
//
task display_memory(int offset, int count);
for(int i = 0; i < count; i++)
if(memory.exists(offset + i))
$display("^^^ %16.t | %m | memory[0x%8.x] = 0x%2.x", $time, offset + i, memory[offset + i]);
else
$display("^^^ %16.t | %m | memory[0x%8.x] = 0x%2.x", $time, offset + i, 8'hxx);
endtask: display_memory
 
 
// --------------------------------------------------------------------
//
task constant_fill(int offset, int count, int value);
for(int i = 0; i < count; i++)
memory[offset + i] = value;
endtask: constant_fill
 
 
// --------------------------------------------------------------------
//
task counting_fill(int offset, int count);
for(int i = 0; i < count; i++)
memory[offset + i] = i;
endtask: counting_fill
 
 
// --------------------------------------------------------------------
//
task dump_words(int offset, ref byte data[]);
foreach(data[i])
if(memory.exists(offset + i))
data[i] = memory[offset + i];
else
data[i] = 'bx;
endtask: dump_words
 
 
// --------------------------------------------------------------------
//
function reg [7:0] dump(int offset);
if(memory.exists(offset))
return(memory[offset]);
else
return('bx);
endfunction: dump
 
 
// --------------------------------------------------------------------
//
task load_words(int offset, byte data[]);
foreach(data[i])
memory[offset + i] = data[i];
endtask: load_words
 
 
// --------------------------------------------------------------------
//
task load(int offset, reg [7:0] data);
memory[offset] = data;
endtask: load
 
 
// --------------------------------------------------------------------
//
task run_read_interface;
int result;
logic [9:0] delay = 0;
int memory_addr;
 
forever
@(axi4_s.cb_s)
begin
result = ar_q_h.q.try_peek(ar_if_h);
if(result != 0)
begin
log.debug($sformatf("araddr = 0x%h", ar_if_h.araddr));
log.debug($sformatf("arlen = 0x%h", ar_if_h.arlen));
delay = $urandom_range(9, 0);
if(delay > 6)
repeat($urandom_range(50, 1))
@(axi4_s.cb_s);
 
for(int i = 0; i < ar_if_h.arlen + 1; i++)
begin
memory_addr = ar_if_h.araddr + (i * (2 ** ar_if_h.arsize));
for(int i = 0; i < ar_if_h.N; i++)
begin
if(memory.exists(memory_addr))
r_if_h.rdata[i*8 +: 8] = memory[memory_addr];
else
r_if_h.rdata[i*8 +: 8] = 8'hxx;
 
memory_addr++;
end
log.debug($sformatf("rdata = 0x%h", r_if_h.rdata));
 
if(i == ar_if_h.arlen)
begin
ar_q_h.q.get(ar_if_h);
r_if_h.rlast = 1;
end
else
r_if_h.rlast = 0;
 
r_if_h.rid = 0;
r_if_h.rresp = 0;
 
r_q_h.q.put(r_if_h);
r_if_h = new(axi4_s);
 
@(axi4_s.cb_s);
end
r_if_h.rlast = 0;
end
end
endtask: run_read_interface
 
 
// --------------------------------------------------------------------
//
task run_write_interface;
 
int result;
logic [9:0] delay = 0;
int memory_addr;
 
forever
@(axi4_s.cb_s)
begin
result = aw_q_h.q.try_peek(aw_if_h);
if(result != 0)
begin
memory_addr = aw_if_h.awaddr;
log.debug($sformatf("awaddr = 0x%h", aw_if_h.awaddr));
 
delay = $urandom_range(9, 0);
if(delay > 6)
repeat($urandom_range(8, 1))
@(axi4_s.cb_s);
 
for(int i = 0; i < aw_if_h.awlen + 1; i++)
begin
w_q_h.q.get(w_if_h);
log.debug($sformatf("wdata = 0x%h", w_if_h.wdata));
for(int k = 0; k < aw_if_h.N; k++)
begin
memory[memory_addr] = w_if_h.wdata[k*8 +: 8];
memory_addr++;
end
 
if(i == aw_if_h.awlen)
begin
b_if_h.bresp = 0;
b_if_h.bid = aw_if_h.awid;
b_q_h.q.put(b_if_h);
b_if_h = new(axi4_s);
aw_q_h.q.get(aw_if_h);
end
 
@(axi4_s.cb_s);
end
end
end
 
endtask: run_write_interface
 
 
// --------------------------------------------------------------------
//
task run_model;
wait(axi4_s.cb_s.aresetn);
axi4_s.zero_cycle_delay();
 
aw_q_h.run_q();
w_q_h.run_q();
b_q_h.run_q();
ar_q_h.run_q();
r_q_h.run_q();
 
fork
run_write_interface();
join_none
 
fork
run_read_interface();
join_none
endtask: run_model
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_s);
super.new(axi4_s);
a_word_t_mod_n: assert($bits(WORD_T) % 8 == 0) else $fatal;
this.aw_q_h = new(axi4_s, 2);
this.w_q_h = new(axi4_s, 16);
this.b_q_h = new(axi4_s, 2);
this.ar_q_h = new(axi4_s, 2);
this.r_q_h = new(axi4_s, 16);
this.log = new();
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_memory_class
 
 
// --------------------------------------------------------------------
//
endpackage: axi4_memory_pkg
 
/sim/src/axi4_models/axi4_models_pkg.sv
0,0 → 1,822
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
// --------------------------------------------------------------------
//
package axi4_models_pkg;
 
// --------------------------------------------------------------------
//
virtual class axi4_channel_if_class #(A, N, I);
 
virtual axi4_if #(A, N, I) axi4_bus;
event valid;
 
 
// --------------------------------------------------------------------
//
pure virtual function void set_master_default;
pure virtual function void set_slave_default;
pure virtual function void copy(axi4_channel_if_class #(A, N, I) from);
pure virtual function void copy_if;
pure virtual function void drive_if;
pure virtual function void set_ready(bit value);
pure virtual function bit is_valid;
pure virtual function void set_valid(bit value);
pure virtual function bit is_ready;
pure virtual function bit is_transfer;
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
this.axi4_bus = axi4_bus;
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_channel_if_class
 
 
// --------------------------------------------------------------------
//
class axi4_channel_sink_q_class #(A, N, I, type T = logic);
 
virtual axi4_if #(A, N, I) axi4_bus;
T c_if_h;
int q_size;
mailbox #(T) q;
 
 
// --------------------------------------------------------------------
//
function automatic void run_q;
int result;
c_if_h.set_ready(1'b1);
 
fork
forever
@(axi4_bus.cb_s)
begin
if(c_if_h.is_transfer)
begin
result = q.try_put(c_if_h);
if(result == 0)
$error;
 
c_if_h.copy_if();
c_if_h = new(axi4_bus);
end
 
if(q.num >= q_size)
c_if_h.set_ready(1'b0);
else
c_if_h.set_ready(1'b1);
end
join_none
endfunction: run_q
 
 
//--------------------------------------------------------------------
function new( virtual axi4_if #(A, N, I) axi4_bus, int q_size);
this.axi4_bus = axi4_bus;
this.q_size = q_size;
this.q = new(q_size);
this.c_if_h = new(axi4_bus);
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_channel_sink_q_class
 
 
// --------------------------------------------------------------------
//
class axi4_channel_source_q_class #(A, N, I, type T = logic);
 
virtual axi4_if #(A, N, I) axi4_bus;
T c_if_h;
int q_size;
mailbox #(T) q;
 
 
// --------------------------------------------------------------------
//
function automatic void run_q;
int result;
c_if_h.set_valid(1'b0);
 
fork
forever
@(axi4_bus.cb_s)
begin
if(c_if_h.is_transfer)
begin
result = q.try_get(c_if_h);
if(result == 0)
$stop;
end
 
result = q.try_peek(c_if_h);
if(result == 0)
c_if_h.set_valid(1'b0);
else
begin
c_if_h.set_valid(1'b1);
c_if_h.drive_if();
end
end
join_none
endfunction: run_q
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus, int q_size);
this.axi4_bus = axi4_bus;
this.q_size = q_size;
this.q = new(q_size);
this.c_if_h = new(axi4_bus);
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_channel_source_q_class
 
 
// --------------------------------------------------------------------
//
class axi4_aw_if_class #(A, N, I)
extends axi4_channel_if_class #(A, N, I);
 
logic [(A-1):0] awaddr;
logic [1:0] awburst;
logic [(I-1):0] awid;
logic [7:0] awlen;
logic [2:0] awsize;
logic [3:0] awcache;
logic awlock;
logic [2:0] awprot;
logic [3:0] awqos;
logic [3:0] awregion;
 
 
// --------------------------------------------------------------------
//
function void set_master_default;
axi4_bus.cb_m.awvalid <= 0;
endfunction: set_master_default
 
 
// --------------------------------------------------------------------
//
function void set_slave_default;
axi4_bus.cb_s.awready <= 0;
endfunction: set_slave_default
 
 
// --------------------------------------------------------------------
//
function void copy(axi4_channel_if_class #(A, N, I) from);
axi4_aw_if_class #(A, N, I) child;
$cast(child, from);
awaddr = child.awaddr;
awburst = child.awburst;
awid = child.awid;
awlen = child.awlen;
awsize = child.awsize;
awcache = child.awcache;
awlock = child.awlock;
awprot = child.awprot;
awqos = child.awqos;
awregion = child.awregion;
endfunction: copy
 
 
// --------------------------------------------------------------------
//
function void copy_if;
awaddr = axi4_bus.cb_s.awaddr;
awburst = axi4_bus.cb_s.awburst;
awid = axi4_bus.cb_s.awid;
awlen = axi4_bus.cb_s.awlen;
awsize = axi4_bus.cb_s.awsize;
awcache = axi4_bus.cb_s.awcache;
awlock = axi4_bus.cb_s.awlock;
awprot = axi4_bus.cb_s.awprot;
awqos = axi4_bus.cb_s.awqos;
awregion = axi4_bus.cb_s.awregion;
endfunction: copy_if
 
 
// --------------------------------------------------------------------
//
function void drive_if;
axi4_bus.cb_m.awaddr <= awaddr;
axi4_bus.cb_m.awburst <= awburst;
axi4_bus.cb_m.awid <= awid;
axi4_bus.cb_m.awlen <= awlen;
axi4_bus.cb_m.awsize <= awsize;
axi4_bus.cb_m.awcache <= awcache;
axi4_bus.cb_m.awlock <= awlock;
axi4_bus.cb_m.awprot <= awprot;
axi4_bus.cb_m.awqos <= awqos;
axi4_bus.cb_m.awregion <= awregion;
endfunction: drive_if
 
 
// --------------------------------------------------------------------
//
function void set_ready(bit value);
axi4_bus.cb_s.awready <= value;
endfunction: set_ready
 
 
// --------------------------------------------------------------------
//
function bit is_valid;
return(axi4_bus.cb_s.awvalid);
endfunction: is_valid
 
 
// --------------------------------------------------------------------
//
function void set_valid(bit value);
axi4_bus.cb_m.awvalid <= value;
endfunction: set_valid
 
 
// --------------------------------------------------------------------
//
function bit is_ready;
return(axi4_bus.cb_m.awready);
endfunction: is_ready
 
 
// --------------------------------------------------------------------
//
function bit is_transfer;
return(axi4_bus.cb_m.awready & axi4_bus.cb_s.awvalid);
endfunction: is_transfer
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
super.new(axi4_bus);
endfunction: new
 
// --------------------------------------------------------------------
//
endclass: axi4_aw_if_class
 
 
// --------------------------------------------------------------------
//
class axi4_ar_if_class #(A, N, I)
extends axi4_channel_if_class #(A, N, I);
 
logic [(A-1):0] araddr;
logic [1:0] arburst;
logic [(I-1):0] arid;
logic [7:0] arlen;
logic [2:0] arsize;
logic [3:0] arcache;
logic arlock;
logic [2:0] arprot;
logic [3:0] arqos;
logic [3:0] arregion;
 
 
// --------------------------------------------------------------------
//
virtual function void set_master_default;
axi4_bus.cb_m.arvalid <= 0;
endfunction: set_master_default
 
 
// --------------------------------------------------------------------
//
virtual function void set_slave_default;
axi4_bus.cb_s.arready <= 0;
endfunction: set_slave_default
 
 
// --------------------------------------------------------------------
//
virtual function void copy(axi4_channel_if_class #(A, N, I) from);
axi4_ar_if_class #(A, N, I) child;
$cast(child, from);
araddr = child.araddr;
arburst = child.arburst;
arid = child.arid;
arlen = child.arlen;
arsize = child.arsize;
arcache = child.arcache;
arlock = child.arlock;
arprot = child.arprot;
arqos = child.arqos;
arregion = child.arregion;
endfunction: copy
 
 
// --------------------------------------------------------------------
//
virtual function void copy_if;
araddr = axi4_bus.cb_s.araddr;
arburst = axi4_bus.cb_s.arburst;
arid = axi4_bus.cb_s.arid;
arlen = axi4_bus.cb_s.arlen;
arsize = axi4_bus.cb_s.arsize;
arcache = axi4_bus.cb_s.arcache;
arlock = axi4_bus.cb_s.arlock;
arprot = axi4_bus.cb_s.arprot;
arqos = axi4_bus.cb_s.arqos;
arregion = axi4_bus.cb_s.arregion;
endfunction: copy_if
 
 
// --------------------------------------------------------------------
//
virtual function void drive_if;
axi4_bus.cb_m.araddr <= araddr;
axi4_bus.cb_m.arburst <= arburst;
axi4_bus.cb_m.arid <= arid;
axi4_bus.cb_m.arlen <= arlen;
axi4_bus.cb_m.arsize <= arsize;
axi4_bus.cb_m.arcache <= arcache;
axi4_bus.cb_m.arlock <= arlock;
axi4_bus.cb_m.arprot <= arprot;
axi4_bus.cb_m.arqos <= arqos;
axi4_bus.cb_m.arregion <= arregion;
endfunction: drive_if
 
 
// --------------------------------------------------------------------
//
virtual function void set_ready(bit value);
axi4_bus.cb_s.arready <= value;
endfunction: set_ready
 
 
// --------------------------------------------------------------------
//
virtual function bit is_valid;
return(axi4_bus.cb_s.arvalid);
endfunction: is_valid
 
 
// --------------------------------------------------------------------
//
function void set_valid(bit value);
axi4_bus.cb_m.arvalid <= value;
endfunction: set_valid
 
 
// --------------------------------------------------------------------
//
function bit is_ready;
return(axi4_bus.cb_m.arready);
endfunction: is_ready
 
 
// --------------------------------------------------------------------
//
function bit is_transfer;
return(axi4_bus.cb_m.arready & axi4_bus.cb_s.arvalid);
endfunction: is_transfer
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
super.new(axi4_bus);
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_ar_if_class
 
 
// --------------------------------------------------------------------
//
class axi4_w_if_class #(A, N, I)
extends axi4_channel_if_class #(A, N, I);
 
logic [(8*N)-1:0] wdata;
logic [(I-1):0] wid;
logic wlast;
logic [N-1:0] wstrb;
 
 
// --------------------------------------------------------------------
//
function void set_master_default;
axi4_bus.cb_m.wvalid <= 0;
endfunction: set_master_default
 
 
// --------------------------------------------------------------------
//
function void set_slave_default;
axi4_bus.cb_s.wready <= 0;
endfunction: set_slave_default
 
 
// --------------------------------------------------------------------
//
function void copy(axi4_channel_if_class #(A, N, I) from);
axi4_w_if_class #(A, N, I) child;
$cast(child, from);
wdata = child.wdata;
wid = child.wid;
wlast = child.wlast;
wstrb = child.wstrb;
endfunction: copy
 
 
// --------------------------------------------------------------------
//
function void copy_if;
wdata = axi4_bus.cb_s.wdata;
wid = axi4_bus.cb_s.wid;
wlast = axi4_bus.cb_s.wlast;
wstrb = axi4_bus.cb_s.wstrb;
endfunction: copy_if
 
 
// --------------------------------------------------------------------
//
function void drive_if;
axi4_bus.cb_m.wdata <= wdata;
axi4_bus.cb_m.wid <= wid;
axi4_bus.cb_m.wlast <= wlast;
axi4_bus.cb_m.wstrb <= wstrb;
endfunction: drive_if
 
 
// --------------------------------------------------------------------
//
function void set_ready(bit value);
axi4_bus.cb_s.wready <= value;
endfunction: set_ready
 
 
// --------------------------------------------------------------------
//
function bit is_valid;
return(axi4_bus.cb_s.wvalid);
endfunction: is_valid
 
 
// --------------------------------------------------------------------
//
function void set_valid(bit value);
axi4_bus.cb_m.wvalid <= value;
endfunction: set_valid
 
 
// --------------------------------------------------------------------
//
function bit is_ready;
return(axi4_bus.cb_m.wready);
endfunction: is_ready
 
 
// --------------------------------------------------------------------
//
function bit is_transfer;
return(axi4_bus.cb_m.wready & axi4_bus.cb_s.wvalid);
endfunction: is_transfer
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
super.new(axi4_bus);
endfunction: new
 
// --------------------------------------------------------------------
//
endclass: axi4_w_if_class
 
 
// --------------------------------------------------------------------
//
class axi4_b_if_class #(A, N, I)
extends axi4_channel_if_class #(A, N, I);
 
logic [(I-1):0] bid;
logic [1:0] bresp;
 
 
// --------------------------------------------------------------------
//
function void set_master_default;
axi4_bus.cb_m.bready <= 0;
endfunction: set_master_default
 
 
// --------------------------------------------------------------------
//
function void set_slave_default;
axi4_bus.cb_s.bvalid <= 0;
endfunction: set_slave_default
 
 
// --------------------------------------------------------------------
//
function void copy(axi4_channel_if_class #(A, N, I) from);
axi4_b_if_class #(A, N, I) child;
$cast(child, from);
bid = child.bid;
bresp = child.bresp;
endfunction: copy
 
 
// --------------------------------------------------------------------
//
function void copy_if;
bid = axi4_bus.cb_m.bid;
bresp = axi4_bus.cb_m.bresp;
endfunction: copy_if
 
 
// --------------------------------------------------------------------
//
function void drive_if;
axi4_bus.cb_s.bid <= bid;
axi4_bus.cb_s.bresp <= bresp;
endfunction: drive_if
 
 
// --------------------------------------------------------------------
//
function void set_ready(bit value);
axi4_bus.cb_m.bready <= value;
endfunction: set_ready
 
 
// --------------------------------------------------------------------
//
function bit is_valid;
return(axi4_bus.cb_m.bvalid);
endfunction: is_valid
 
 
// --------------------------------------------------------------------
//
function void set_valid(bit value);
axi4_bus.cb_s.bvalid <= value;
endfunction: set_valid
 
 
// --------------------------------------------------------------------
//
function bit is_ready;
return(axi4_bus.cb_s.bready);
endfunction: is_ready
 
 
// --------------------------------------------------------------------
//
function bit is_transfer;
return(axi4_bus.cb_s.bready & axi4_bus.cb_m.bvalid);
endfunction: is_transfer
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
super.new(axi4_bus);
endfunction: new
 
// --------------------------------------------------------------------
//
endclass: axi4_b_if_class
 
// --------------------------------------------------------------------
//
class axi4_r_if_class #(A, N, I)
extends axi4_channel_if_class #(A, N, I);
 
logic [(8*N)-1:0] rdata;
logic [(I-1):0] rid;
logic rlast;
logic [1:0] rresp;
 
 
// --------------------------------------------------------------------
//
function void set_master_default;
axi4_bus.cb_m.rready <= 0;
endfunction: set_master_default
 
 
// --------------------------------------------------------------------
//
function void set_slave_default;
axi4_bus.cb_s.rvalid <= 0;
endfunction: set_slave_default
 
 
// --------------------------------------------------------------------
//
function void copy(axi4_channel_if_class #(A, N, I) from);
axi4_r_if_class #(A, N, I) child;
$cast(child, from);
rdata = child.rdata;
rid = child.rid;
rlast = child.rlast;
rresp = child.rresp;
endfunction: copy
 
 
// --------------------------------------------------------------------
//
function void copy_if;
rdata = axi4_bus.cb_m.rdata;
rid = axi4_bus.cb_m.rid;
rlast = axi4_bus.cb_m.rlast;
rresp = axi4_bus.cb_m.rresp;
endfunction: copy_if
 
 
// --------------------------------------------------------------------
//
function void drive_if;
axi4_bus.cb_s.rdata <= rdata;
axi4_bus.cb_s.rid <= rid;
axi4_bus.cb_s.rlast <= rlast;
axi4_bus.cb_s.rresp <= rresp;
endfunction: drive_if
 
 
// --------------------------------------------------------------------
//
function void set_ready(bit value);
axi4_bus.cb_m.rready <= value;
endfunction: set_ready
 
 
// --------------------------------------------------------------------
//
function bit is_valid;
return(axi4_bus.cb_m.rvalid);
endfunction: is_valid
 
 
// --------------------------------------------------------------------
//
function void set_valid(bit value);
axi4_bus.cb_s.rvalid <= value;
endfunction: set_valid
 
 
// --------------------------------------------------------------------
//
function bit is_ready;
return(axi4_bus.cb_s.rready);
endfunction: is_ready
 
 
// --------------------------------------------------------------------
//
function bit is_transfer;
return(axi4_bus.cb_s.rready & axi4_bus.cb_m.rvalid);
endfunction: is_transfer
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_bus);
super.new(axi4_bus);
endfunction: new
 
// --------------------------------------------------------------------
//
endclass: axi4_r_if_class
 
 
// --------------------------------------------------------------------
//
virtual class axi4_master_model_class #(A, N, I);
 
virtual axi4_if #(A, N, I) axi4_m;
axi4_aw_if_class #(A, N, I) aw_if_h;
axi4_channel_source_q_class #(A, N, I, axi4_aw_if_class #(A, N, I)) aw_q_h;
axi4_w_if_class #(A, N, I) w_if_h;
axi4_channel_source_q_class #(A, N, I, axi4_w_if_class #(A, N, I)) w_q_h;
axi4_b_if_class #(A, N, I) b_if_h;
axi4_channel_sink_q_class #(A, N, I, axi4_b_if_class #(A, N, I)) b_q_h;
axi4_ar_if_class #(A, N, I) ar_if_h;
axi4_channel_source_q_class #(A, N, I, axi4_ar_if_class #(A, N, I)) ar_q_h;
axi4_r_if_class #(A, N, I) r_if_h;
axi4_channel_sink_q_class #(A, N, I, axi4_r_if_class #(A, N, I)) r_q_h;
 
 
// --------------------------------------------------------------------
//
pure virtual task run_model;
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_m);
this.axi4_m = axi4_m;
this.aw_if_h = new(axi4_m);
aw_if_h.set_master_default();
this.w_if_h = new(axi4_m);
w_if_h.set_master_default();
this.b_if_h = new(axi4_m);
b_if_h.set_master_default();
this.ar_if_h = new(axi4_m);
ar_if_h.set_master_default();
this.r_if_h = new(axi4_m);
r_if_h.set_master_default();
 
fork
run_model();
join_none
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_master_model_class
 
 
// --------------------------------------------------------------------
//
virtual class axi4_slave_model_class #(A, N, I);
 
virtual axi4_if #(A, N, I) axi4_s;
axi4_aw_if_class #(A, N, I) aw_if_h;
axi4_channel_sink_q_class #(A, N, I, axi4_aw_if_class #(A, N, I)) aw_q_h;
axi4_w_if_class #(A, N, I) w_if_h;
axi4_channel_sink_q_class #(A, N, I, axi4_w_if_class #(A, N, I)) w_q_h;
axi4_b_if_class #(A, N, I) b_if_h;
axi4_channel_source_q_class #(A, N, I, axi4_b_if_class #(A, N, I)) b_q_h;
axi4_ar_if_class #(A, N, I) ar_if_h;
axi4_channel_sink_q_class #(A, N, I, axi4_ar_if_class #(A, N, I)) ar_q_h;
axi4_r_if_class #(A, N, I) r_if_h;
axi4_channel_source_q_class #(A, N, I, axi4_r_if_class #(A, N, I)) r_q_h;
 
 
// --------------------------------------------------------------------
//
pure virtual task run_model;
 
 
//--------------------------------------------------------------------
function new(virtual axi4_if #(A, N, I) axi4_s);
 
this.axi4_s = axi4_s;
this.aw_if_h = new(axi4_s);
aw_if_h.set_slave_default();
this.w_if_h = new(axi4_s);
w_if_h.set_slave_default();
this.b_if_h = new(axi4_s);
b_if_h.set_slave_default();
this.ar_if_h = new(axi4_s);
ar_if_h.set_slave_default();
this.r_if_h = new(axi4_s);
r_if_h.set_slave_default();
 
fork
run_model();
join_none
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: axi4_slave_model_class
 
 
// --------------------------------------------------------------------
//
endpackage: axi4_models_pkg
 
 
/sim/src/axi4_models/tb_axi4_multi_port_memory.sv
0,0 → 1,89
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
module
tb_axi4_multi_port_memory
#(
A = 32, // address bus width
N = 8, // data bus width in bytes
I = 1, // ID width
PORTS,
MAXWAITS = 256,
type WORD_T = byte
)
(
axi4_if axi4_s[PORTS],
 
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
import axis_bfm_pkg::*;
import axi4_memory_pkg::*;
import axi4_arbiter_pkg::*;
 
 
// --------------------------------------------------------------------
//
axi4_if #(.A(A), .N(N), .I(I)) axi4_bus(.*);
 
 
// --------------------------------------------------------------------
//
axi4_arbiter_class #(A, N, I) arb_h;
axi4_memory_class #(A, N, I, WORD_T) m_h;
 
initial
begin
arb_h = new(axi4_s, axi4_bus);
m_h = new(axi4_bus);
end
 
 
// --------------------------------------------------------------------
//
axi4_checker #(.A(A), .N(N), .MAXWAITS(MAXWAITS))
axi4_bus_checker(.axi4_in(axi4_bus));
 
 
// --------------------------------------------------------------------
//
generate
begin: axi4_s_cherkers
for(genvar j = 0; j < PORTS; j++)
axi4_checker #(.A(A), .N(N), .MAXWAITS(MAXWAITS))
axi4_checker_i(.axi4_in(axi4_s[j]));
end
endgenerate
 
 
// --------------------------------------------------------------------
//
endmodule
 
/sim/src/tb_axi4_memory.sv
0,0 → 1,129
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
module tb_top();
 
// --------------------------------------------------------------------
// test bench clock & reset
wire clk_100mhz;
wire tb_clk = clk_100mhz;
wire tb_rst;
wire aclk = tb_clk;
wire aresetn = ~tb_rst;
 
tb_base #(.PERIOD(10_000)) tb(clk_100mhz, tb_rst);
 
 
// --------------------------------------------------------------------
//
localparam A = 32;
localparam N = 8;
 
 
// --------------------------------------------------------------------
//
axi4_if #(.A(A), .N(N))
axi4_s(.*);
 
// --------------------------------------------------------------------
//
 
 
// --------------------------------------------------------------------
// sim models
// | | | | | | | | | | | | | | | | |
// \|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/
// ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
 
// --------------------------------------------------------------------
//
axi4_checker #(.A(A), .N(N))
axi4_s_check(.axi4_in(axi4_s));
 
 
// // --------------------------------------------------------------------
// //
// axi4_master_bfm_if #(.A(A), .N(N))
// tb_axi4_m(.axi4_s(axi4_s), .*);
 
 
// --------------------------------------------------------------------
//
import axi4_bfm_pkg::*;
axi4_master_bfm_class bfm;
 
initial
bfm = new(axi4_s);
 
 
// --------------------------------------------------------------------
//
import axi4_memory_pkg::*;
axi4_memory_class axi4_memory;
 
initial
axi4_memory = new(axi4_s);
 
 
// ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
// /|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\
// | | | | | | | | | | | | | | | | |
// sim models
// --------------------------------------------------------------------
 
 
// --------------------------------------------------------------------
// debug wires
 
 
// --------------------------------------------------------------------
// test
the_test test( tb_clk, tb_rst );
 
initial
begin
 
test.run_the_test();
 
$display("^^^---------------------------------");
$display("^^^ %16.t | Testbench done.", $time);
$display("^^^---------------------------------");
 
$display("^^^---------------------------------");
 
$stop();
 
end
 
endmodule
 
 
 
/sim/src/tb_axi4_to_axis_agent_class_pkg.sv
0,0 → 1,130
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
package tb_axi4_to_axis_agent_class_pkg;
 
// --------------------------------------------------------------------
//
import axi4_memory_pkg::*;
import axis_bfm_pkg::*;
 
 
// --------------------------------------------------------------------
//
class tb_axi4_to_axis_agent_class #(N, A, I, D, U);
 
axi4_memory_class #(A, N, I) m_h;
axis_rx_bfm_class #(N, I, D, U) s_h;
memory_tr_class #(A, N, I) m_tr_h, m_tr_clone_h;
axis_tr_class #(N, I, D, U) s_tr_h;
 
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m;
virtual axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_out;
 
mailbox #(memory_tr_class #(A, N, I)) q;
 
 
// --------------------------------------------------------------------
//
task wait_for_sof;
@(posedge axis_out.cb_s.tuser);
$display("^^^ %16.t | %m", $time);
endtask: wait_for_sof
 
 
// --------------------------------------------------------------------
//
task random_transaction(int addr, int size);
m_tr_h = new();
m_tr_h.random(addr, size);
m_tr_clone_h = m_tr_h.clone();
q.put(m_tr_clone_h);
m_h.load_words(addr, m_tr_h.data);
endtask: random_transaction
 
 
// --------------------------------------------------------------------
//
task automatic
compare;
 
$display("^^^ %16.t | %m", $time);
$display("^^^ %16.t | q.num = %d", $time, q.num);
$display("^^^ %16.t | s_h.q.num = %d", $time, s_h.q.num);
$display("^^^ %16.t | m_tr_h.data.size = %d", $time, m_tr_h.data.size);
 
q.get(m_tr_h);
 
for(int i = 0; i < m_tr_h.data.size; i += N)
begin
if(s_h.q.try_get(s_tr_h) == 0)
begin
$display("!!! %16.t | ERROR!!! try_get(s_tr_h) == 0", $time);
break;
end
 
for(int k = 0; k < N; k++)
begin
if(s_tr_h.tdata[k*8 +: 8] != m_tr_h.data[i + k])
begin
$display("!!! %16.t | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^", $time);
$display("!!! %16.t | ERROR!!! mismatch | i = %d | k = %d", $time, i, k);
$display("!!! %16.t | %x | %x |", $time, s_tr_h.tdata[k*8 +: 8], m_tr_h.data[i + k]);
$stop;
end
end
end
 
$display("^^^ %16.t | %m | done!", $time);
 
endtask: compare
 
 
//--------------------------------------------------------------------
//
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m,
virtual axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_out
);
 
this.axi4_m = axi4_m;
this.axis_out = axis_out;
m_h = new(axi4_m);
s_h = new(axis_out);
q = new();
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: tb_axi4_to_axis_agent_class
 
// --------------------------------------------------------------------
//
endpackage: tb_axi4_to_axis_agent_class_pkg
/sim/tests/debug_axi4_memory/init_test.do
0,0 → 1,34
# ------------------------------------
#
# ------------------------------------
 
global env
 
set env(ROOT_DIR) ../../../../..
set env(PROJECT_DIR) ../../..
set env(SIM_TARGET) fpga
 
# load sim procedures
do $env(ROOT_DIR)/qaz_libs/scripts/sim_procs.do
 
radix -hexadecimal
 
make_lib work 1
 
sim_compile_all packages
sim_compile_all sim
sim_compile_all axi4_lib
 
# simulation $root
vlog $env(PROJECT_DIR)/sim/src/tb_axi4_memory.sv
 
# compile test last
vlog ./the_test.sv
 
# vopt work.glbl tb_top -L secureip -L simprims_ver -L unisims_ver -f opt_tb_top.f -o opt_tb_top
 
# run the sim
sim_run_test
 
 
 
/sim/tests/debug_axi4_memory/sim.do
0,0 → 1,21
#
#
 
 
quit -sim
 
# vsim opt_tb_top
 
vsim -novopt -f ./sim.f work.tb_top
# vsim -novopt -L secureip -L simprims_ver -L unisims_ver work.glbl work.tb_top
 
# vsim -voptargs="+acc=rn+/tb_top/dut" -L secureip -L simprims_ver -L unisims_ver work.glbl work.tb_top
# vsim -pli "C:/Xilinx/Vivado/2015.4/lib/win64.o/libxil_vsim.dll" -novopt -L secureip -L simprims_ver -L unisims_ver work.glbl work.tb_top
 
 
# # log all signals
# log -r *
 
# run -all
 
 
/sim/tests/debug_axi4_memory/sim.f
0,0 → 1,14
#
#
 
+nowarn8887
 
-novopt
-t 1ps
 
-L work
 
 
 
 
/sim/tests/debug_axi4_memory/the_test.sv
0,0 → 1,143
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
`timescale 1ps/1ps
 
 
module
the_test(
input tb_clk,
input tb_rst
);
 
// --------------------------------------------------------------------
//
localparam A = tb_top.A;
localparam N = tb_top.N;
// --------------------------------------------------------------------
//
import axi4_transaction_pkg::*;
axi4_payload_class payload_h;
// --------------------------------------------------------------------
//
logic [(8*N)-1:0] data[];
logic [1:0] resp;
task run_the_test;
 
// --------------------------------------------------------------------
// insert test below
// --------------------------------------------------------------------
$display("^^^---------------------------------");
$display("^^^ %16.t | Testbench begun.\n", $time);
$display("^^^---------------------------------");
// --------------------------------------------------------------------
 
tb_top.tb.timeout_stop(10us);
 
// --------------------------------------------------------------------
wait(~tb_rst);
 
// --------------------------------------------------------------------
#100ns;
// force tb_top.axi4_s.bready = 1;
 
data = new[16];
data[0] = 64'habba_beef_cafe_1a7e;
tb_top.bfm.basic_write(32'h1234_0000, 0, data, resp);
 
// --------------------------------------------------------------------
#100ns;
repeat(5)
begin
tb_top.bfm.basic_random_write_burst(resp);
end
// --------------------------------------------------------------------
#100ns;
repeat(5)
begin
tb_top.bfm.basic_random_read_burst(data, resp);
end
// // --------------------------------------------------------------------
// #100ns;
// repeat(5)
// begin
// tb_top.bfm.basic_read(32'h1234_0000, 3, data, resp);
// foreach(data[i])
// $display("^^^ %16.t | %d | 0x%016x |", $time, i, data[i]);
// end
// tb_top.bfm.basic_read(32'habcd_0000, 0, data, resp);
// $display("^^^ %16.t | 0x%016x |", $time, data[0]);
// // --------------------------------------------------------------------
// tb_top.bfm.basic_read(32'habcd_0000, 0, data, resp);
// $display("^^^ %16.t | 0x%016x |", $time, data[0]);
// // --------------------------------------------------------------------
// #100ns;
 
// repeat(5)
// begin
// tb_top.bfm.basic_random_write(32'habcd_0000, 0, resp);
// end
 
// // --------------------------------------------------------------------
// #100ns;
 
// repeat(5)
// begin
// tb_top.bfm.basic_random_write(32'habcd_0000, 3, resp);
// end
// --------------------------------------------------------------------
#100ns;
 
// --------------------------------------------------------------------
// insert test above
// --------------------------------------------------------------------
 
endtask
 
 
endmodule
 
/sim/tests/debug_axi4_memory/wip.do
0,0 → 1,15
#
 
# vlog -f ../../libs/packages_verilog/tb_lib.f
vlog -f ../../libs/sim_verilog/axi4_bfm.f
vlog -f ../../libs/sim_verilog/axi4_models.f
 
vlog -f ../../libs/axi4_lib_verilog/axi4_base.f
 
# simulation $root
vlog ../../src/tb_axi4_memory.sv
 
# compile test last
vlog ./the_test.sv
 
/sim/tests/tb_axi4_to_axis_basic_dma/init_test.do
0,0 → 1,34
# ------------------------------------
#
# ------------------------------------
 
global env
 
# setup environment
do ../../../../scripts/sim_env.do
set env(SIM_TARGET) fpga
set env(SIM_TB) tb_axi4_to_axis_basic_dma
 
radix -hexadecimal
 
make_lib work 1
 
sim_compile_all tb_packages
sim_compile_all bfm_packages
sim_compile_all axi4_lib
sim_compile_all qaz_lib
sim_compile_all sim
 
# compile simulation files
vlog -f ./$env(SIM_TB).f
 
# simulation $root
vlog ./$env(SIM_TB)_pkg.sv
vlog ./$env(SIM_TB).sv
 
# compile test last
vlog ./the_test.sv
 
# run the sim
sim_run_test
 
/sim/tests/tb_axi4_to_axis_basic_dma/sim.do
0,0 → 1,13
#
#
 
quit -sim
 
vsim -novopt work.tb_top
 
# log all signals
log -r *
 
# run -all
 
 
/sim/tests/tb_axi4_to_axis_basic_dma/tb_axi4_to_axis_basic_dma.f
0,0 → 1,12
#
 
${LIB_BASE_DIR}/axi4_stream_lib/sim/src/axis_bfm_pkg.sv
${LIB_BASE_DIR}/axi4_lib/sim/src/axi4_models/axi4_memory_pkg.sv
 
${PROJECT_DIR}/sim/src/tb_axi4_to_axis_agent_class_pkg.sv
 
${PROJECT_DIR}/src/axi4_to_axis_basic_dma.sv
 
./${SIM_TB}_pkg.sv
./${SIM_TB}.sv
 
/sim/tests/tb_axi4_to_axis_basic_dma/tb_axi4_to_axis_basic_dma.sv
0,0 → 1,115
// --------------------------------------------------------------------
//
// --------------------------------------------------------------------
 
 
module tb_top();
 
// --------------------------------------------------------------------
// test bench clock & reset
wire clk_200mhz;
wire tb_clk = clk_200mhz;
wire tb_rst;
 
tb_base #(.PERIOD(5_000)) tb(clk_200mhz, tb_rst);
 
 
// --------------------------------------------------------------------
//
wire tb_rst_s;
wire aclk = tb_clk;
wire aresetn = ~tb_rst_s;
 
sync_reset
sync_reset_i(aclk, tb_rst, tb_rst_s);
 
 
// --------------------------------------------------------------------
//
import tb_axi4_to_axis_basic_dma_pkg::*;
 
 
// --------------------------------------------------------------------
//
axi4_if #(.A(A), .N(N), .I(I)) axi4_m(.*);
axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_out(.*);
 
 
// --------------------------------------------------------------------
//
logic dma_enable = 0;
 
axi4_to_axis_basic_dma
#(
.A(A),
.N(N),
.I(I),
.BASE_ADDRESS(BASE_ADDRESS),
.BUFFER_SIZE(BUFFER_SIZE),
.BURST_LENGTH(BURST_LENGTH),
.MAX_BURSTS(MAX_BURSTS),
.BYTES_PER_TUSER(BYTES_PER_TUSER)
)
dut(.*);
 
 
// --------------------------------------------------------------------
// sim models
// | | | | | | | | | | | | | | | | |
// \|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/
// ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
 
// --------------------------------------------------------------------
//
axi4_checker #(.A(A), .N(N), .MAXWAITS(64))
axi4_checker_i(.axi4_in(axi4_m));
 
 
// --------------------------------------------------------------------
//
axis_checker #(.N(N), .I(I), .D(D), .U(U))
axis_checker_i(.axis_in(axis_out));
 
 
// --------------------------------------------------------------------
//
tb_axi4_to_axis_basic_dma_class a_h;
 
initial
a_h = new(axi4_m, axis_out);
 
 
// --------------------------------------------------------------------
//
 
// ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '
// /|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\-/|\
// | | | | | | | | | | | | | | | | |
// sim models
// --------------------------------------------------------------------
 
 
// --------------------------------------------------------------------
// debug wires
 
 
// --------------------------------------------------------------------
// test
the_test test(tb_clk, tb_rst);
 
initial
begin
 
test.run_the_test();
 
$display("^^^---------------------------------");
$display("^^^ %16.t | Testbench done.", $time);
$display("^^^---------------------------------");
 
$display("^^^---------------------------------");
 
$stop();
 
end
 
endmodule
/sim/tests/tb_axi4_to_axis_basic_dma/tb_axi4_to_axis_basic_dma_pkg.sv
0,0 → 1,58
// --------------------------------------------------------------------
//
// --------------------------------------------------------------------
 
 
package tb_axi4_to_axis_basic_dma_pkg;
 
// --------------------------------------------------------------------
//
import tb_axi4_to_axis_agent_class_pkg::*;
 
 
// --------------------------------------------------------------------
//
localparam BASE_ADDRESS = 32'h0000_0000; // must be on 4K boundry
localparam BUFFER_SIZE = 'h800;
localparam BURST_LENGTH = 8'h08;
localparam MAX_BURSTS = 4;
localparam BYTES_PER_TUSER = 2; // bytes per tuser bit. Set to 0 for transfer based.
 
localparam N = 8; // data bus width in bytes
localparam A = 32; // address bus width
localparam I = 1; // ID width
localparam D = 1; // TDEST width
localparam U = N / BYTES_PER_TUSER; // TUSER width
 
 
// --------------------------------------------------------------------
//
class tb_axi4_to_axis_basic_dma_class
extends tb_axi4_to_axis_agent_class #(N, A, I, D, U);
 
 
//--------------------------------------------------------------------
//
function new
(
virtual axi4_if #(.A(A), .N(N), .I(I)) axi4_m,
virtual axis_if #(.N(N), .I(I), .D(D), .U(U)) axis_out
);
 
super.new(.axi4_m(axi4_m), .axis_out(axis_out));
 
endfunction: new
 
 
// --------------------------------------------------------------------
//
endclass: tb_axi4_to_axis_basic_dma_class
 
// --------------------------------------------------------------------
//
endpackage: tb_axi4_to_axis_basic_dma_pkg
 
 
 
 
 
/sim/tests/tb_axi4_to_axis_basic_dma/the_test.sv
0,0 → 1,69
// --------------------------------------------------------------------
//
// --------------------------------------------------------------------
 
`timescale 1ps/1ps
 
 
module
the_test(
input tb_clk,
input tb_rst
);
 
// --------------------------------------------------------------------
//
import tb_axi4_to_axis_basic_dma_pkg::*;
 
 
// --------------------------------------------------------------------
//
task run_the_test;
 
// --------------------------------------------------------------------
// insert test below
// --------------------------------------------------------------------
$display("^^^---------------------------------");
$display("^^^ %16.t | Testbench begun.", $time);
$display("^^^---------------------------------");
 
// --------------------------------------------------------------------
tb_top.tb.timeout_stop(50us);
// tb_top.a_h.m_h.counting_fill(0,'h800);
 
// --------------------------------------------------------------------
wait(tb_top.aresetn);
#200ns;
 
// --------------------------------------------------------------------
tb_top.a_h.random_transaction(BASE_ADDRESS, BUFFER_SIZE);
force tb_top.dma_enable = 1;
repeat(2) tb_top.a_h.wait_for_sof();
tb_top.a_h.compare();
 
// --------------------------------------------------------------------
release tb_top.dma_enable;
force tb_top.tb_rst = 1;
#200ns;
release tb_top.tb_rst;
#200ns;
 
// --------------------------------------------------------------------
tb_top.a_h.random_transaction(BASE_ADDRESS, BUFFER_SIZE);
force tb_top.dma_enable = 1;
repeat(2) tb_top.a_h.wait_for_sof();
tb_top.a_h.compare();
 
// --------------------------------------------------------------------
#200ns;
 
 
// --------------------------------------------------------------------
// insert test above
// --------------------------------------------------------------------
 
endtask
 
 
endmodule
 
/sim/tests/tb_axi4_to_axis_basic_dma/wip.do
0,0 → 1,11
#
 
vlog -f ./tb_axi4_to_axis_basic_dma.f
 
# simulation $root
vlog ./tb_axi4_to_axis_basic_dma.sv
 
# compile test last
vlog ./the_test.sv
 
/src/axi4_if.sv
38,51 → 38,273
input aclk
);
 
logic [(A-1):0] araddr;
logic [1:0] arburst;
logic [3:0] arcache;
logic [(I-1):0] arid;
logic [7:0] arlen;
logic arlock;
logic [2:0] arprot;
logic [3:0] arqos;
logic arready;
logic [3:0] arregion;
logic [2:0] arsize;
logic arvalid;
logic [(A-1):0] awaddr;
logic [1:0] awburst;
logic [3:0] awcache;
logic [(I-1):0] awid;
logic [7:0] awlen;
logic awlock;
logic [2:0] awprot;
logic [3:0] awqos;
logic awready;
logic [3:0] awregion;
logic [2:0] awsize;
logic awvalid;
logic [(I-1):0] bid;
logic bready;
logic [1:0] bresp;
logic bvalid;
logic [(8*N)-1:0] rdata;
logic [(I-1):0] rid;
logic rlast;
logic rready;
logic [1:0] rresp;
logic rvalid;
logic [(8*N)-1:0] wdata;
logic [(I-1):0] wid;
logic wlast;
logic wready;
logic [N-1:0] wstrb;
logic wvalid;
wire [(A-1):0] araddr;
wire [1:0] arburst;
wire [3:0] arcache;
wire [(I-1):0] arid;
wire [7:0] arlen;
wire arlock;
wire [2:0] arprot;
wire [3:0] arqos;
wire arready;
wire [3:0] arregion;
wire [2:0] arsize;
wire arvalid;
wire [(A-1):0] awaddr;
wire [1:0] awburst;
wire [3:0] awcache;
wire [(I-1):0] awid;
wire [7:0] awlen;
wire awlock;
wire [2:0] awprot;
wire [3:0] awqos;
wire awready;
wire [3:0] awregion;
wire [2:0] awsize;
wire awvalid;
wire [(I-1):0] bid;
wire bready;
wire [1:0] bresp;
wire bvalid;
wire [(8*N)-1:0] rdata;
wire [(I-1):0] rid;
wire rlast;
wire rready;
wire [1:0] rresp;
wire rvalid;
wire [(8*N)-1:0] wdata;
wire [(I-1):0] wid;
wire wlast;
wire wready;
wire [N-1:0] wstrb;
wire wvalid;
 
 
// --------------------------------------------------------------------
// synthesis translate_off
clocking cb_s @(posedge aclk);
input arid;
input araddr;
input arburst;
input arcache;
input awid;
input arlen;
input arlock;
input arprot;
input arqos;
output arready;
input arregion;
input arsize;
input arvalid;
input awaddr;
input awburst;
input awcache;
input awlen;
input awlock;
input awprot;
input awqos;
output awready;
input awregion;
input awsize;
input awvalid;
input bready;
output bid;
output bresp;
output bvalid;
output rdata;
output rid;
output rlast;
input rready;
output rresp;
output rvalid;
input wdata;
input wid;
input wlast;
output wready;
input wstrb;
input wvalid;
input aresetn;
input aclk;
endclocking
 
 
// --------------------------------------------------------------------
//
default clocking cb_m @(posedge aclk);
output arid;
output araddr;
output arburst;
output arcache;
output awid;
output arlen;
output arlock;
output arprot;
output arqos;
input arready;
output arregion;
output arsize;
output arvalid;
output awaddr;
output awburst;
output awcache;
output awlen;
output awlock;
output awprot;
output awqos;
input awready;
output awregion;
output awsize;
output awvalid;
output bready;
input bid;
input bresp;
input bvalid;
input rdata;
input rid;
input rlast;
output rready;
input rresp;
input rvalid;
output wdata;
output wid;
output wlast;
input wready;
output wstrb;
output wvalid;
input aresetn;
input aclk;
endclocking
// synthesis translate_on
// --------------------------------------------------------------------
 
 
// --------------------------------------------------------------------
//
`ifdef USE_MOD_PORTS
// --------------------------------------------------------------------
//
modport
slave
(
// --------------------------------------------------------------------
// synthesis translate_off
clocking cb_s,
// synthesis translate_on
// --------------------------------------------------------------------
input arid,
input araddr,
input arburst,
input arcache,
input awid,
input arlen,
input arlock,
input arprot,
input arqos,
output arready,
input arregion,
input arsize,
input arvalid,
input awaddr,
input awburst,
input awcache,
input awlen,
input awlock,
input awprot,
input awqos,
output awready,
input awregion,
input awsize,
input awvalid,
input bready,
output bid,
output bresp,
output bvalid,
output rdata,
output rid,
output rlast,
input rready,
output rresp,
output rvalid,
input wdata,
input wid,
input wlast,
output wready,
input wstrb,
input wvalid,
input aresetn,
input aclk
);
 
 
// --------------------------------------------------------------------
//
modport
master
(
// --------------------------------------------------------------------
// synthesis translate_off
clocking cb_m,
// synthesis translate_on
// --------------------------------------------------------------------
output arid,
output araddr,
output arburst,
output arcache,
output awid,
output arlen,
output arlock,
output arprot,
output arqos,
input arready,
output arregion,
output arsize,
output arvalid,
output awaddr,
output awburst,
output awcache,
output awlen,
output awlock,
output awprot,
output awqos,
input awready,
output awregion,
output awsize,
output awvalid,
output bready,
input bid,
input bresp,
input bvalid,
input rdata,
input rid,
input rlast,
output rready,
input rresp,
input rvalid,
output wdata,
output wlast,
input wready,
output wstrb,
output wvalid,
input aresetn,
input aclk
);
`endif
 
 
// --------------------------------------------------------------------
// synthesis translate_off
task
zero_cycle_delay;
 
##0;
 
endtask: zero_cycle_delay
// synthesis translate_on
// --------------------------------------------------------------------
 
 
// --------------------------------------------------------------------
//
 
endinterface
 
 
/src/axi4_m_to_read_fifos.sv
0,0 → 1,253
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
module
axi4_m_to_read_fifos
#(
A = 32, // address bus width
N = 8, // data bus width in bytes
I = 1, // ID width
R_D = 32,
AR_D = 2,
WATERMARK = 0,
USE_ADVANCED_PROTOCOL = 0
)
(
axi4_if axi4_m,
axi4_if axi4_read_fifo,
 
output ar_wr_full,
input ar_wr_en,
output r_rd_empty,
input r_rd_en,
output r_topped_off,
output r_watermark,
 
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
localparam UB = $clog2(R_D);
 
 
// --------------------------------------------------------------------
//
localparam R_W =
8*N + // logic [(8*N)-1:0] rdata;
I + // logic [(I-1):0] rid;
1 + // logic rlast;
2; // logic [1:0] rresp;
 
localparam AX_BASIC_W =
A + // logic [(A-1):0] axaddr;
2 + // logic [1:0] axburst;
I + // logic [(I-1):0] axid;
8 + // logic [7:0] axlen;
3; // logic [2:0] axsize;
 
localparam AX_ADVANCED_W =
4 + // logic [3:0] axcache;
1 + // logic axlock;
3 + // logic [2:0] axprot;
4 + // logic [3:0] axqos;
4; // logic [3:0] axregion;
 
localparam AR_W = USE_ADVANCED_PROTOCOL ? AX_BASIC_W + AX_ADVANCED_W : AX_BASIC_W;
 
 
// --------------------------------------------------------------------
//
wire [AR_W-1:0] ar_rd_data;
wire [AR_W-1:0] ar_wr_data;
 
generate
begin: ar_data_gen
if(USE_ADVANCED_PROTOCOL)
begin
assign ar_wr_data =
{
axi4_read_fifo.araddr,
axi4_read_fifo.arburst,
axi4_read_fifo.arid,
axi4_read_fifo.arlen,
axi4_read_fifo.arsize,
axi4_read_fifo.arcache,
axi4_read_fifo.arlock,
axi4_read_fifo.arprot,
axi4_read_fifo.arqos,
axi4_read_fifo.arregion
};
 
assign
{
axi4_m.araddr,
axi4_m.arburst,
axi4_m.arid,
axi4_m.arlen,
axi4_m.arsize,
axi4_m.arcache,
axi4_m.arlock,
axi4_m.arprot,
axi4_m.arqos,
axi4_m.arregion
} = ar_rd_data;
end
else
begin
assign ar_wr_data =
{
axi4_read_fifo.araddr,
axi4_read_fifo.arburst,
axi4_read_fifo.arid,
axi4_read_fifo.arlen,
axi4_read_fifo.arsize
};
 
assign axi4_read_fifo.arcache = 0;
assign axi4_read_fifo.arlock = 0;
assign axi4_read_fifo.arprot = 0;
assign axi4_read_fifo.arqos = 0;
assign axi4_read_fifo.arregion = 0;
 
assign
{
axi4_m.araddr,
axi4_m.arburst,
axi4_m.arid,
axi4_m.arlen,
axi4_m.arsize
} = ar_rd_data;
 
assign axi4_m.arcache = 0;
assign axi4_m.arlock = 0;
assign axi4_m.arprot = 0;
assign axi4_m.arqos = 0;
assign axi4_m.arregion = 0;
 
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire ar_rd_empty;
wire ar_rd_en = axi4_m.arready & axi4_m.arvalid;
assign axi4_m.arvalid = ~ar_rd_empty;
 
sync_fifo #(.W(AR_W), .D(AR_D))
ar_fifo
(
.wr_full(ar_wr_full),
.wr_data(ar_wr_data),
.wr_en(ar_wr_en),
.rd_empty(ar_rd_empty),
.rd_data(ar_rd_data),
.rd_en(ar_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
wire [R_W-1:0] r_rd_data;
wire [R_W-1:0] r_wr_data;
 
assign r_wr_data =
{
axi4_m.rdata,
axi4_m.rid,
axi4_m.rlast,
axi4_m.rresp
};
 
assign
{
axi4_read_fifo.rdata,
axi4_read_fifo.rid,
axi4_read_fifo.rlast,
axi4_read_fifo.rresp
} = r_rd_data;
 
 
// --------------------------------------------------------------------
//
wire [UB:0] r_count;
 
generate
begin: r_watermark_gen
if(WATERMARK == 0)
begin
assign r_topped_off = 1;
assign r_watermark = 0;
end
else
begin
reg r_topped_off_r;
assign r_topped_off = r_topped_off_r;
assign r_watermark = r_count > WATERMARK - 1;
 
always_ff @(posedge aclk)
if(~aresetn | r_rd_empty)
r_topped_off_r <= 0;
else if(r_watermark)
r_topped_off_r <= 1;
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire r_wr_full;
wire r_wr_en = axi4_m.rready & axi4_m.rvalid;
assign axi4_m.rready = ~r_wr_full;
 
sync_fifo #(.W(R_W), .D(R_D))
r_fifo
(
.wr_full(r_wr_full),
.wr_data(r_wr_data),
.wr_en(r_wr_en),
.rd_empty(r_rd_empty),
.rd_data(r_rd_data),
.rd_en(r_rd_en),
.count(r_count),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
 
endmodule
 
/src/axi4_m_to_write_fifos.sv
0,0 → 1,282
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
module
axi4_m_to_write_fifos
#(
A = 32, // address bus width
N = 8, // data bus width in bytes
I = 1, // ID width
W_D = 32,
B_D = 2,
AW_D = 2,
WATERMARK = 0,
USE_ADVANCED_PROTOCOL = 0
)
(
axi4_if axi4_m,
axi4_if axi4_write_fifo,
output aw_wr_full,
input aw_wr_en,
output w_wr_full,
input w_wr_en,
output w_topped_off,
output w_watermark,
output b_rd_empty,
input b_rd_en,
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
localparam UB = $clog2(W_D);
 
 
// --------------------------------------------------------------------
//
localparam W_W =
8*N + // logic [(8*N)-1:0] wdata;
I + // logic [(I-1):0] wid;
1 + // logic wlast;
N; // logic [N-1:0] wstrb;
 
localparam B_W =
I + // logic [(I-1):0] bid;
2; // logic [1:0] bresp;
 
localparam AX_BASIC_W =
A + // logic [(A-1):0] axaddr;
2 + // logic [1:0] axburst;
I + // logic [(I-1):0] axid;
8 + // logic [7:0] axlen;
3; // logic [2:0] axsize;
 
localparam AX_ADVANCED_W =
4 + // logic [3:0] axcache;
1 + // logic axlock;
3 + // logic [2:0] axprot;
4 + // logic [3:0] axqos;
4; // logic [3:0] axregion;
 
localparam AW_W = USE_ADVANCED_PROTOCOL ? AX_BASIC_W + AX_ADVANCED_W : AX_BASIC_W;
 
 
// --------------------------------------------------------------------
//
wire [AW_W-1:0] aw_rd_data;
wire [AW_W-1:0] aw_wr_data;
 
generate
begin: aw_data_gen
if(USE_ADVANCED_PROTOCOL)
begin
assign aw_wr_data =
{
axi4_write_fifo.awaddr,
axi4_write_fifo.awburst,
axi4_write_fifo.awid,
axi4_write_fifo.awlen,
axi4_write_fifo.awsize,
axi4_write_fifo.awcache,
axi4_write_fifo.awlock,
axi4_write_fifo.awprot,
axi4_write_fifo.awqos,
axi4_write_fifo.awregion
};
 
assign
{
axi4_m.awaddr,
axi4_m.awburst,
axi4_m.awid,
axi4_m.awlen,
axi4_m.awsize,
axi4_m.awcache,
axi4_m.awlock,
axi4_m.awprot,
axi4_m.awqos,
axi4_m.awregion
} = aw_rd_data;
end
else
begin
assign aw_wr_data =
{
axi4_write_fifo.awaddr,
axi4_write_fifo.awburst,
axi4_write_fifo.awid,
axi4_write_fifo.awlen,
axi4_write_fifo.awsize
};
 
assign
{
axi4_m.awaddr,
axi4_m.awburst,
axi4_m.awid,
axi4_m.awlen,
axi4_m.awsize
} = aw_rd_data;
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire aw_rd_empty;
wire aw_rd_en = axi4_m.awready & axi4_m.awvalid;
assign axi4_m.awvalid = ~aw_rd_empty;
 
sync_fifo #(.W(AW_W), .D(AW_D))
aw_fifo
(
.wr_full(aw_wr_full),
.wr_data(aw_wr_data),
.wr_en(aw_wr_en),
.rd_empty(aw_rd_empty),
.rd_data(aw_rd_data),
.rd_en(aw_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
wire [W_W-1:0] w_rd_data;
wire [W_W-1:0] w_wr_data;
 
assign w_wr_data =
{
axi4_write_fifo.wdata,
axi4_write_fifo.wid,
axi4_write_fifo.wlast,
axi4_write_fifo.wstrb
};
 
assign
{
axi4_m.wdata,
axi4_m.wid,
axi4_m.wlast,
axi4_m.wstrb
} = w_rd_data;
 
 
// --------------------------------------------------------------------
//
wire [UB:0] w_count;
wire w_rd_empty;
wire w_rd_en = axi4_m.wready & axi4_m.wvalid;
assign axi4_m.wvalid = ~w_rd_empty;
 
sync_fifo #(.W(W_W), .D(W_D))
w_fifo
(
.wr_full(w_wr_full),
.wr_data(w_wr_data),
.wr_en(w_wr_en),
.rd_empty(w_rd_empty),
.rd_data(w_rd_data),
.rd_en(w_rd_en),
.count(w_count),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
generate
begin: w_watermark_gen
if(WATERMARK == 0)
begin
assign w_topped_off = 1;
assign w_watermark = 0;
end
else
begin
reg w_topped_off_r;
assign w_topped_off = w_topped_off_r;
assign w_watermark = w_count > WATERMARK - 1;
 
always_ff @(posedge aclk)
if(~aresetn | w_rd_empty)
w_topped_off_r <= 0;
else if(w_watermark)
w_topped_off_r <= 1;
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire [B_W-1:0] b_rd_data;
wire [B_W-1:0] b_wr_data;
 
assign b_wr_data =
{
axi4_m.bid,
axi4_m.bresp
};
 
assign
{
axi4_write_fifo.bid,
axi4_write_fifo.bresp
} = b_rd_data;
 
 
// --------------------------------------------------------------------
//
wire b_wr_full;
wire b_wr_en = axi4_m.bready & axi4_m.bvalid;
assign axi4_m.bready = ~b_wr_full;
 
sync_fifo #(.W(B_W), .D(B_D))
b_fifo
(
.wr_full(b_wr_full),
.wr_data(b_wr_data),
.wr_en(b_wr_en),
.rd_empty(b_rd_empty),
.rd_data(b_rd_data),
.rd_en(b_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
endmodule
 
/src/axi4_register_slice.sv
53,14 → 53,16
 
// --------------------------------------------------------------------
//
axi4_to_read_fifos
axi4_s_to_read_fifos
#(
.A(A),
.N(N),
.I(I),
.R_D(2),
.AR_D(2),
.USE_ADVANCED_PROTOCOL(USE_ADVANCED_PROTOCOL)
)
axi4_to_read_fifos_i(.*);
axi4_s_to_read_fifos_i(.*);
 
 
// --------------------------------------------------------------------
118,14 → 120,17
 
// --------------------------------------------------------------------
//
axi4_to_write_fifos
axi4_s_to_write_fifos
#(
.A(A),
.N(N),
.I(I),
.W_D(2),
.B_D(2),
.AW_D(2),
.USE_ADVANCED_PROTOCOL(USE_ADVANCED_PROTOCOL)
)
axi4_to_write_fifos_i(.*);
axi4_s_to_write_fifos_i(.*);
 
 
// --------------------------------------------------------------------
/src/axi4_s_to_read_fifos.sv
0,0 → 1,205
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
module
axi4_s_to_read_fifos
#(
A = 32, // address bus width
N = 8, // data bus width in bytes
I = 1, // ID width
R_D = 32,
AR_D = 2,
USE_ADVANCED_PROTOCOL = 0
)
(
axi4_if axi4_s,
axi4_if axi4_read_fifo,
 
output ar_rd_empty,
input ar_rd_en,
output r_wr_full,
input r_wr_en,
 
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
localparam R_W =
8*N + // logic [(8*N)-1:0] rdata;
I + // logic [(I-1):0] rid;
1 + // logic rlast;
2; // logic [1:0] rresp;
 
localparam AX_BASIC_W =
A + // logic [(A-1):0] axaddr;
2 + // logic [1:0] axburst;
I + // logic [(I-1):0] axid;
8 + // logic [7:0] axlen;
3; // logic [2:0] axsize;
 
localparam AX_ADVANCED_W =
4 + // logic [3:0] axcache;
1 + // logic axlock;
3 + // logic [2:0] axprot;
4 + // logic [3:0] axqos;
4; // logic [3:0] axregion;
 
localparam AR_W = USE_ADVANCED_PROTOCOL ? AX_BASIC_W + AX_ADVANCED_W : AX_BASIC_W;
 
 
// --------------------------------------------------------------------
//
wire [AR_W-1:0] ar_rd_data;
wire [AR_W-1:0] ar_wr_data;
 
generate
begin: ar_data_gen
if(USE_ADVANCED_PROTOCOL)
begin
assign ar_wr_data =
{
axi4_s.araddr,
axi4_s.arburst,
axi4_s.arid,
axi4_s.arlen,
axi4_s.arsize,
axi4_s.arcache,
axi4_s.arlock,
axi4_s.arprot,
axi4_s.arqos,
axi4_s.arregion
};
 
assign
{
axi4_read_fifo.araddr,
axi4_read_fifo.arburst,
axi4_read_fifo.arid,
axi4_read_fifo.arlen,
axi4_read_fifo.arsize,
axi4_read_fifo.arcache,
axi4_read_fifo.arlock,
axi4_read_fifo.arprot,
axi4_read_fifo.arqos,
axi4_read_fifo.arregion
} = ar_rd_data;
end
else
begin
assign ar_wr_data =
{
axi4_s.araddr,
axi4_s.arburst,
axi4_s.arid,
axi4_s.arlen,
axi4_s.arsize
};
 
assign
{
axi4_read_fifo.araddr,
axi4_read_fifo.arburst,
axi4_read_fifo.arid,
axi4_read_fifo.arlen,
axi4_read_fifo.arsize
} = ar_rd_data;
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire ar_wr_full;
wire ar_wr_en = axi4_s.arready & axi4_s.arvalid;
assign axi4_s.arready = ~ar_wr_full;
 
sync_fifo #(.W(AR_W), .D(AR_D))
ar_fifo
(
.wr_full(ar_wr_full),
.wr_data(ar_wr_data),
.wr_en(ar_wr_en),
.rd_empty(ar_rd_empty),
.rd_data(ar_rd_data),
.rd_en(ar_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
wire [R_W-1:0] r_rd_data;
wire [R_W-1:0] r_wr_data;
 
assign r_wr_data =
{
axi4_read_fifo.rdata,
axi4_read_fifo.rid,
axi4_read_fifo.rlast,
axi4_read_fifo.rresp
};
 
assign
{
axi4_s.rdata,
axi4_s.rid,
axi4_s.rlast,
axi4_s.rresp
} = r_rd_data;
 
 
// --------------------------------------------------------------------
//
wire r_rd_empty;
wire r_rd_en = axi4_s.rready & axi4_s.rvalid;
assign axi4_s.rvalid = ~r_rd_empty;
 
sync_fifo #(.W(R_W), .D(R_D))
r_fifo
(
.wr_full(r_wr_full),
.wr_data(r_wr_data),
.wr_en(r_wr_en),
.rd_empty(r_rd_empty),
.rd_data(r_rd_data),
.rd_en(r_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
 
endmodule
 
/src/axi4_s_to_write_fifos.sv
0,0 → 1,252
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
module
axi4_s_to_write_fifos
#(
A = 32, // address bus width
N = 8, // data bus width in bytes
I = 1, // ID width
W_D = 32,
B_D = 2,
AW_D = 2,
 
USE_ADVANCED_PROTOCOL = 0
)
(
axi4_if axi4_s,
axi4_if axi4_write_fifo,
 
output aw_rd_empty,
input aw_rd_en,
output w_rd_empty,
input w_rd_en,
output b_wr_full,
input b_wr_en,
 
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
localparam W_W =
8*N + // logic [(8*N)-1:0] wdata;
I + // logic [(I-1):0] wid;
1 + // logic wlast;
N; // logic [N-1:0] wstrb;
 
localparam B_W =
I + // logic [(I-1):0] bid;
2; // logic [1:0] bresp;
 
localparam AX_BASIC_W =
A + // logic [(A-1):0] axaddr;
2 + // logic [1:0] axburst;
I + // logic [(I-1):0] axid;
8 + // logic [7:0] axlen;
3; // logic [2:0] axsize;
 
localparam AX_ADVANCED_W =
4 + // logic [3:0] axcache;
1 + // logic axlock;
3 + // logic [2:0] axprot;
4 + // logic [3:0] axqos;
4; // logic [3:0] axregion;
 
localparam AW_W = USE_ADVANCED_PROTOCOL ? AX_BASIC_W + AX_ADVANCED_W : AX_BASIC_W;
 
 
// --------------------------------------------------------------------
//
wire [AW_W-1:0] aw_rd_data;
wire [AW_W-1:0] aw_wr_data;
 
generate
begin: aw_data_gen
if(USE_ADVANCED_PROTOCOL)
begin
assign aw_wr_data =
{
axi4_s.awaddr,
axi4_s.awburst,
axi4_s.awid,
axi4_s.awlen,
axi4_s.awsize,
axi4_s.awcache,
axi4_s.awlock,
axi4_s.awprot,
axi4_s.awqos,
axi4_s.awregion
};
 
assign
{
axi4_write_fifo.awaddr,
axi4_write_fifo.awburst,
axi4_write_fifo.awid,
axi4_write_fifo.awlen,
axi4_write_fifo.awsize,
axi4_write_fifo.awcache,
axi4_write_fifo.awlock,
axi4_write_fifo.awprot,
axi4_write_fifo.awqos,
axi4_write_fifo.awregion
} = aw_rd_data;
end
else
begin
assign aw_wr_data =
{
axi4_s.awaddr,
axi4_s.awburst,
axi4_s.awid,
axi4_s.awlen,
axi4_s.awsize
};
 
assign
{
axi4_write_fifo.awaddr,
axi4_write_fifo.awburst,
axi4_write_fifo.awid,
axi4_write_fifo.awlen,
axi4_write_fifo.awsize
} = aw_rd_data;
end
end
endgenerate
 
 
// --------------------------------------------------------------------
//
wire aw_wr_full;
wire aw_wr_en = axi4_s.awready & axi4_s.awvalid;
assign axi4_s.awready = ~aw_wr_full;
 
sync_fifo #(.W(AW_W), .D(AW_D))
aw_fifo
(
.wr_full(aw_wr_full),
.wr_data(aw_wr_data),
.wr_en(aw_wr_en),
.rd_empty(aw_rd_empty),
.rd_data(aw_rd_data),
.rd_en(aw_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
wire [W_W-1:0] w_rd_data;
wire [W_W-1:0] w_wr_data;
 
assign w_wr_data =
{
axi4_s.wdata,
axi4_s.wid,
axi4_s.wlast,
axi4_s.wstrb
};
 
assign
{
axi4_write_fifo.wdata,
axi4_write_fifo.wid,
axi4_write_fifo.wlast,
axi4_write_fifo.wstrb
} = w_rd_data;
 
 
// --------------------------------------------------------------------
//
wire w_wr_full;
wire w_wr_en = axi4_s.wready & axi4_s.wvalid;
assign axi4_s.wready = ~w_wr_full;
 
sync_fifo #(.W(W_W), .D(W_D))
w_fifo
(
.wr_full(w_wr_full),
.wr_data(w_wr_data),
.wr_en(w_wr_en),
.rd_empty(w_rd_empty),
.rd_data(w_rd_data),
.rd_en(w_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
wire [B_W-1:0] b_rd_data;
wire [B_W-1:0] b_wr_data;
 
assign b_wr_data =
{
axi4_write_fifo.bid,
axi4_write_fifo.bresp
};
 
assign
{
axi4_s.bid,
axi4_s.bresp
} = b_rd_data;
 
 
// --------------------------------------------------------------------
//
wire b_rd_empty;
wire b_rd_en = axi4_s.bready & axi4_s.bvalid;
assign axi4_s.bvalid = ~b_rd_empty;
 
sync_fifo #(.W(B_W), .D(B_D))
b_fifo
(
.wr_full(b_wr_full),
.wr_data(b_wr_data),
.wr_en(b_wr_en),
.rd_empty(b_rd_empty),
.rd_data(b_rd_data),
.rd_en(b_rd_en),
.count(),
.clk(aclk),
.reset(~aresetn)
);
 
 
// --------------------------------------------------------------------
//
 
endmodule
 
/src/axi4_to_axis_basic_dma.sv
0,0 → 1,170
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2015 Authors and OPENCORES.ORG ////
//// ////
//// This source file may be used and distributed without ////
//// restriction provided that this copyright statement is not ////
//// removed from the file and that any derivative work contains ////
//// the original copyright notice and the associated disclaimer. ////
//// ////
//// This source file is free software; you can redistribute it ////
//// and/or modify it under the terms of the GNU Lesser General ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any ////
//// later version. ////
//// ////
//// This source is distributed in the hope that it will be ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
//// PURPOSE. See the GNU Lesser General Public License for more ////
//// details. ////
//// ////
//// You should have received a copy of the GNU Lesser General ////
//// Public License along with this source; if not, download it ////
//// from http://www.opencores.org/lgpl.shtml ////
//// ////
//////////////////////////////////////////////////////////////////////
 
 
module
axi4_to_axis_basic_dma
#(
A, // address bus width
N, // data bus width in bytes
I, // ID width
BASE_ADDRESS, // must be on 4K boundry
BUFFER_SIZE,
BURST_LENGTH,
MAX_BURSTS, // max number of burst the FIFO can hold
BYTES_PER_TUSER = 0 // bytes per tuser bit . Set to 0 for transfer based.
)
(
axi4_if axi4_m,
axis_if axis_out,
input dma_enable,
input aclk,
input aresetn
);
 
// --------------------------------------------------------------------
//
localparam R_D = BURST_LENGTH * MAX_BURSTS;
localparam AR_D = 2;
localparam WATERMARK = BURST_LENGTH * (MAX_BURSTS - AR_D);
localparam STRIDE = N * BURST_LENGTH;
localparam ADDRESS_END = BASE_ADDRESS + BUFFER_SIZE;
localparam AR_STOP = (BUFFER_SIZE % STRIDE) ? ADDRESS_END - STRIDE : ADDRESS_END;
localparam R_STOP = (BUFFER_SIZE % N) ? ADDRESS_END - N : ADDRESS_END;
localparam U = N / BYTES_PER_TUSER;
 
 
// --------------------------------------------------------------------
// synthesis translate_off
localparam N_4K = 'h1000 / 'h8; // number of bytes in 4K
initial
begin
a_4k_mod_base_address: assert(BASE_ADDRESS % 'h1000 == 0) else $fatal;
a_4k_gt_eq_stride: assert(N_4K >= STRIDE) else $fatal;
a_4k_mod_stride: assert('h1000 % STRIDE == 0) else $fatal;
a_n: assert((N % BYTES_PER_TUSER == 0)) else $fatal;
a_buffer_size: assert(BUFFER_SIZE % N == 0) else $fatal;
a_bytes_per_tuser: assert(BYTES_PER_TUSER != 0) else $fatal; // need to fix
end
// synthesis translate_on
// --------------------------------------------------------------------
 
 
// --------------------------------------------------------------------
//
axi4_if #(.A(A), .N(N), .I(I)) axi4_read_fifo(.*);
axis_if #(.N(N), .U(U)) axis_in(.*);
 
 
// --------------------------------------------------------------------
//
reg [(A-1):0] araddr_r;
wire araddr_en = (araddr_r < AR_STOP);
wire r_watermark;
wire ar_wr_full;
wire ar_wr_en = ~ar_wr_full & ~r_watermark & araddr_en & dma_enable;
 
always_ff @(posedge aclk)
if(~aresetn | ~araddr_en)
araddr_r <= BASE_ADDRESS;
else if(ar_wr_en)
araddr_r <= araddr_r + STRIDE;
 
 
// --------------------------------------------------------------------
//
reg [(A-1):0] r_rd_addr;
wire r_rd_addr_en = (r_rd_addr < R_STOP);
wire r_rd_addr_start = (r_rd_addr == BASE_ADDRESS);
wire r_rd_addr_end = (r_rd_addr == R_STOP);
wire r_rd_empty;
wire r_topped_off;
wire r_rd_en = ~r_rd_empty & r_rd_addr_en & axis_in.tready;
 
always_ff @(posedge aclk)
if(~aresetn | ~r_rd_addr_en)
r_rd_addr <= BASE_ADDRESS;
else if(r_rd_en)
r_rd_addr <= r_rd_addr + N;
 
 
// --------------------------------------------------------------------
//
axi4_m_to_read_fifos #(.A(A), .N(N), .I(I), .R_D(R_D), .AR_D(AR_D), .WATERMARK(WATERMARK))
axi4_m_to_read_fifos_i(.*);
 
 
// --------------------------------------------------------------------
//
assign axi4_read_fifo.araddr = araddr_r;
assign axi4_read_fifo.arid = 0;
assign axi4_read_fifo.arburst = 2'b01;
assign axi4_read_fifo.arsize = $clog2(N);
assign axi4_read_fifo.arlen = BURST_LENGTH - 1;
assign axi4_read_fifo.rready = 1;
 
 
// --------------------------------------------------------------------
//
assign axi4_m.awaddr = 0;
assign axi4_m.awburst = 0;
assign axi4_m.awcache = 0;
assign axi4_m.awid = 0;
assign axi4_m.awlen = 0;
assign axi4_m.awlock = 0;
assign axi4_m.awprot = 0;
assign axi4_m.awqos = 0;
assign axi4_m.awregion = 0;
assign axi4_m.awsize = 0;
assign axi4_m.awvalid = 0;
assign axi4_m.bready = 0;
assign axi4_m.wdata = 0;
assign axi4_m.wid = 0;
assign axi4_m.wlast = 0;
assign axi4_m.wstrb = 0;
assign axi4_m.wvalid = 0;
 
 
// --------------------------------------------------------------------
//
assign axis_in.tvalid = ~r_rd_empty;
assign axis_in.tdata = axi4_read_fifo.rdata;
assign axis_in.tlast = axi4_read_fifo.rlast;
assign axis_in.tuser[0] = r_rd_addr_start;
assign axis_in.tuser[U-1:1] = 0; // need to fix
 
 
// --------------------------------------------------------------------
//
axis_register_slice #(.N(N), .U(U))
axis_register_slice_i(.*);
 
 
// --------------------------------------------------------------------
//
endmodule
 

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