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//
// Copyright 2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
task SendFlowCtrl;
input [15:0] fc_len;
begin
$display("Sending Flow Control, quanta = %d, time = %d", fc_len,$time);
pause_time <= fc_len;
@(posedge clk);
pause_req <= 1;
@(posedge clk);
pause_req <= 0;
$display("Sent Flow Control");
end
endtask // SendFlowCtrl
task SendPacket2MAC;
input tx_clk;
input [7:0] data_start;
input [31:0] data_len;
output [7:0] tx_data;
output tx_valid;
output tx_error;
input tx_ack;
reg [15:0] count;
begin
$display("Sending Packet Len=%d, %d", data_len, $time);
count <= 1;
tx_data <= data_start;
tx_error <= 0;
tx_valid <= 1;
while(~tx_ack)
@(posedge tx_clk);
$display("Packet Accepted, %d", $time);
while(count < data_len)
begin
tx_data <= tx_data + 1;
count <= count + 1;
@(posedge clk);
end
tx_valid <= 0;
@(posedge tx_clk);
end
endtask // SendPacket2MAC
task SendPacket_to_ll8;
input [7:0] data_start;
input [15:0] data_len;
// output [7:0] tx_data;
// output tx_sof;
// output tx_eof;
// output tx_src_rdy;
// input tx_dst_rdy;
reg [15:0] count;
begin
$display("Sending Packet Len=%d, %d", data_len, $time);
count <= 2;
tx_ll_data2 <= data_start;
tx_ll_src_rdy2 <= 1;
tx_ll_sof2 <= 1;
tx_ll_eof2 <= 0;
#1;
while(count < data_len)
begin
while(~tx_ll_dst_rdy2)
@(posedge clk);
@(posedge clk);
tx_ll_data2 = tx_ll_data2 + 1;
count = count + 1;
tx_ll_sof2 <= 0;
end
tx_ll_eof2 <= 1;
while(~tx_ll_dst_rdy2)
@(posedge clk);
@(posedge clk);
tx_ll_src_rdy2 <= 0;
end
endtask // SendPacket_to_ll8
task SendPacketFromFile;
input clk;
input [31:0] data_len;
output [7:0] tx_data;
output tx_valid;
output tx_error;
input tx_ack;
reg [15:0] count;
begin
$display("Sending Packet From File Len=%d, %d",data_len,$time);
$readmemh("test_packet.mem",pkt_rom );
count = 0;
tx_data = pkt_rom[count];
tx_error = 0;
tx_valid = 1;
while(~tx_ack)
@(posedge clk);
$display("Packet Accepted, %d",$time);
count = 1;
while(count < data_len)
begin
tx_data = pkt_rom[count];
count = count + 1;
@(posedge clk);
end
tx_valid <= 0;
@(posedge clk);
end
endtask // SendPacketFromFile
task Waiter;
input [31:0] wait_length;
begin
tx_ll_src_rdy2 <= 0;
repeat(wait_length)
@(posedge clk);
tx_ll_src_rdy2 <= 1;
end
endtask // Waiter
task SendPacketFromFile_ll8;
input [31:0] data_len;
input [31:0] wait_length;
input [31:0] wait_time;
integer count;
begin
$display("Sending Packet From File to LL8 Len=%d, %d",data_len,$time);
$readmemh("test_packet.mem",pkt_rom );
while(~tx_ll_dst_rdy2)
@(posedge clk);
tx_ll_data2 <= pkt_rom[0];
tx_ll_src_rdy2 <= 1;
tx_ll_sof2 <= 1;
tx_ll_eof2 <= 0;
@(posedge clk);
for(i=1;i<data_len-1;i=i+1)
begin
while(~tx_ll_dst_rdy2)
@(posedge clk);
tx_ll_data2 <= pkt_rom[i];
tx_ll_sof2 <= 0;
@(posedge clk);
if(i==wait_time)
Waiter(wait_length);
end
while(~tx_ll_dst_rdy2)
@(posedge clk);
tx_ll_eof2 <= 1;
tx_ll_data2 <= pkt_rom[data_len-1];
@(posedge clk);
tx_ll_src_rdy2 <= 0;
end
endtask // SendPacketFromFile_ll8
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