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zjui-ece385-final/qsys/synthesis/submodules/ECE385_mm_interconnect_0_router.sv

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Systemverilog
Executable File

// (C) 2001-2018 Intel Corporation. All rights reserved.
// Your use of Intel Corporation's design tools, logic functions and other
// software and tools, and its AMPP partner logic functions, and any output
// files from any of the foregoing (including device programming or simulation
// files), and any associated documentation or information are expressly subject
// to the terms and conditions of the Intel Program License Subscription
// Agreement, Intel FPGA IP License Agreement, or other applicable
// license agreement, including, without limitation, that your use is for the
// sole purpose of programming logic devices manufactured by Intel and sold by
// Intel or its authorized distributors. Please refer to the applicable
// agreement for further details.
// Your use of Altera Corporation's design tools, logic functions and other
// software and tools, and its AMPP partner logic functions, and any output
// files any of the foregoing (including device programming or simulation
// files), and any associated documentation or information are expressly subject
// to the terms and conditions of the Altera Program License Subscription
// Agreement, Altera MegaCore Function License Agreement, or other applicable
// license agreement, including, without limitation, that your use is for the
// sole purpose of programming logic devices manufactured by Altera and sold by
// Altera or its authorized distributors. Please refer to the applicable
// agreement for further details.
// $Id: //acds/rel/18.1std/ip/merlin/altera_merlin_router/altera_merlin_router.sv.terp#1 $
// $Revision: #1 $
// $Date: 2018/07/18 $
// $Author: psgswbuild $
// -------------------------------------------------------
// Merlin Router
//
// Asserts the appropriate one-hot encoded channel based on
// either (a) the address or (b) the dest id. The DECODER_TYPE
// parameter controls this behaviour. 0 means address decoder,
// 1 means dest id decoder.
//
// In the case of (a), it also sets the destination id.
// -------------------------------------------------------
`timescale 1 ns / 1 ns
module ECE385_mm_interconnect_0_router_default_decode
#(
parameter DEFAULT_CHANNEL = 14,
DEFAULT_WR_CHANNEL = -1,
DEFAULT_RD_CHANNEL = -1,
DEFAULT_DESTID = 21
)
(output [100 - 95 : 0] default_destination_id,
output [34-1 : 0] default_wr_channel,
output [34-1 : 0] default_rd_channel,
output [34-1 : 0] default_src_channel
);
assign default_destination_id =
DEFAULT_DESTID[100 - 95 : 0];
generate
if (DEFAULT_CHANNEL == -1) begin : no_default_channel_assignment
assign default_src_channel = '0;
end
else begin : default_channel_assignment
assign default_src_channel = 34'b1 << DEFAULT_CHANNEL;
end
endgenerate
generate
if (DEFAULT_RD_CHANNEL == -1) begin : no_default_rw_channel_assignment
assign default_wr_channel = '0;
assign default_rd_channel = '0;
end
else begin : default_rw_channel_assignment
assign default_wr_channel = 34'b1 << DEFAULT_WR_CHANNEL;
assign default_rd_channel = 34'b1 << DEFAULT_RD_CHANNEL;
end
endgenerate
endmodule
module ECE385_mm_interconnect_0_router
(
// -------------------
// Clock & Reset
// -------------------
input clk,
input reset,
// -------------------
// Command Sink (Input)
// -------------------
input sink_valid,
input [114-1 : 0] sink_data,
input sink_startofpacket,
input sink_endofpacket,
output sink_ready,
// -------------------
// Command Source (Output)
// -------------------
output src_valid,
output reg [114-1 : 0] src_data,
output reg [34-1 : 0] src_channel,
output src_startofpacket,
output src_endofpacket,
input src_ready
);
// -------------------------------------------------------
// Local parameters and variables
// -------------------------------------------------------
localparam PKT_ADDR_H = 67;
localparam PKT_ADDR_L = 36;
localparam PKT_DEST_ID_H = 100;
localparam PKT_DEST_ID_L = 95;
localparam PKT_PROTECTION_H = 104;
localparam PKT_PROTECTION_L = 102;
localparam ST_DATA_W = 114;
localparam ST_CHANNEL_W = 34;
localparam DECODER_TYPE = 0;
localparam PKT_TRANS_WRITE = 70;
localparam PKT_TRANS_READ = 71;
localparam PKT_ADDR_W = PKT_ADDR_H-PKT_ADDR_L + 1;
localparam PKT_DEST_ID_W = PKT_DEST_ID_H-PKT_DEST_ID_L + 1;
// -------------------------------------------------------
// Figure out the number of bits to mask off for each slave span
// during address decoding
// -------------------------------------------------------
localparam PAD0 = log2ceil(64'h1000 - 64'h0);
localparam PAD1 = log2ceil(64'h2000 - 64'h1000);
localparam PAD2 = log2ceil(64'h3000 - 64'h2000);
localparam PAD3 = log2ceil(64'h4000 - 64'h3000);
localparam PAD4 = log2ceil(64'h5000 - 64'h4000);
localparam PAD5 = log2ceil(64'h6000 - 64'h5000);
localparam PAD6 = log2ceil(64'h7000 - 64'h6000);
localparam PAD7 = log2ceil(64'h8000 - 64'h7000);
localparam PAD8 = log2ceil(64'h9000 - 64'h8800);
localparam PAD9 = log2ceil(64'h9400 - 64'h9000);
localparam PAD10 = log2ceil(64'h9800 - 64'h9400);
localparam PAD11 = log2ceil(64'h9880 - 64'h9800);
localparam PAD12 = log2ceil(64'h9900 - 64'h9880);
localparam PAD13 = log2ceil(64'h9940 - 64'h9900);
localparam PAD14 = log2ceil(64'h9980 - 64'h9940);
localparam PAD15 = log2ceil(64'h99c0 - 64'h9980);
localparam PAD16 = log2ceil(64'h9a00 - 64'h99c0);
localparam PAD17 = log2ceil(64'h9a40 - 64'h9a00);
localparam PAD18 = log2ceil(64'h9a60 - 64'h9a40);
localparam PAD19 = log2ceil(64'h9a80 - 64'h9a60);
localparam PAD20 = log2ceil(64'h9aa0 - 64'h9a80);
localparam PAD21 = log2ceil(64'h9ac0 - 64'h9aa0);
localparam PAD22 = log2ceil(64'h9ae0 - 64'h9ac0);
localparam PAD23 = log2ceil(64'h9b00 - 64'h9af0);
localparam PAD24 = log2ceil(64'h9b10 - 64'h9b00);
localparam PAD25 = log2ceil(64'h9b20 - 64'h9b10);
localparam PAD26 = log2ceil(64'h9b30 - 64'h9b20);
localparam PAD27 = log2ceil(64'h9b40 - 64'h9b30);
localparam PAD28 = log2ceil(64'h9b50 - 64'h9b40);
localparam PAD29 = log2ceil(64'h9b60 - 64'h9b58);
localparam PAD30 = log2ceil(64'h9b68 - 64'h9b60);
localparam PAD31 = log2ceil(64'h80000 - 64'h40000);
localparam PAD32 = log2ceil(64'h600000 - 64'h400000);
localparam PAD33 = log2ceil(64'h10000000 - 64'h8000000);
// -------------------------------------------------------
// Work out which address bits are significant based on the
// address range of the slaves. If the required width is too
// large or too small, we use the address field width instead.
// -------------------------------------------------------
localparam ADDR_RANGE = 64'h10000000;
localparam RANGE_ADDR_WIDTH = log2ceil(ADDR_RANGE);
localparam OPTIMIZED_ADDR_H = (RANGE_ADDR_WIDTH > PKT_ADDR_W) ||
(RANGE_ADDR_WIDTH == 0) ?
PKT_ADDR_H :
PKT_ADDR_L + RANGE_ADDR_WIDTH - 1;
localparam RG = RANGE_ADDR_WIDTH-1;
localparam REAL_ADDRESS_RANGE = OPTIMIZED_ADDR_H - PKT_ADDR_L;
reg [PKT_ADDR_W-1 : 0] address;
always @* begin
address = {PKT_ADDR_W{1'b0}};
address [REAL_ADDRESS_RANGE:0] = sink_data[OPTIMIZED_ADDR_H : PKT_ADDR_L];
end
// -------------------------------------------------------
// Pass almost everything through, untouched
// -------------------------------------------------------
assign sink_ready = src_ready;
assign src_valid = sink_valid;
assign src_startofpacket = sink_startofpacket;
assign src_endofpacket = sink_endofpacket;
wire [PKT_DEST_ID_W-1:0] default_destid;
wire [34-1 : 0] default_src_channel;
// -------------------------------------------------------
// Write and read transaction signals
// -------------------------------------------------------
wire read_transaction;
assign read_transaction = sink_data[PKT_TRANS_READ];
ECE385_mm_interconnect_0_router_default_decode the_default_decode(
.default_destination_id (default_destid),
.default_wr_channel (),
.default_rd_channel (),
.default_src_channel (default_src_channel)
);
always @* begin
src_data = sink_data;
src_channel = default_src_channel;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = default_destid;
// --------------------------------------------------
// Address Decoder
// Sets the channel and destination ID based on the address
// --------------------------------------------------
// ( 0x0 .. 0x1000 )
if ( {address[RG:PAD0],{PAD0{1'b0}}} == 28'h0 ) begin
src_channel = 34'b0000100000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 32;
end
// ( 0x1000 .. 0x2000 )
if ( {address[RG:PAD1],{PAD1{1'b0}}} == 28'h1000 ) begin
src_channel = 34'b0000010000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 31;
end
// ( 0x2000 .. 0x3000 )
if ( {address[RG:PAD2],{PAD2{1'b0}}} == 28'h2000 ) begin
src_channel = 34'b0000001000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 30;
end
// ( 0x3000 .. 0x4000 )
if ( {address[RG:PAD3],{PAD3{1'b0}}} == 28'h3000 ) begin
src_channel = 34'b0000000100000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 29;
end
// ( 0x4000 .. 0x5000 )
if ( {address[RG:PAD4],{PAD4{1'b0}}} == 28'h4000 ) begin
src_channel = 34'b0000000001000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 28;
end
// ( 0x5000 .. 0x6000 )
if ( {address[RG:PAD5],{PAD5{1'b0}}} == 28'h5000 ) begin
src_channel = 34'b0000000000100000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 27;
end
// ( 0x6000 .. 0x7000 )
if ( {address[RG:PAD6],{PAD6{1'b0}}} == 28'h6000 ) begin
src_channel = 34'b0000000000010000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 26;
end
// ( 0x7000 .. 0x8000 )
if ( {address[RG:PAD7],{PAD7{1'b0}}} == 28'h7000 ) begin
src_channel = 34'b0000000000001000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 25;
end
// ( 0x8800 .. 0x9000 )
if ( {address[RG:PAD8],{PAD8{1'b0}}} == 28'h8800 ) begin
src_channel = 34'b0000000000000000000000100000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 14;
end
// ( 0x9000 .. 0x9400 )
if ( {address[RG:PAD9],{PAD9{1'b0}}} == 28'h9000 ) begin
src_channel = 34'b1000000000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 23;
end
// ( 0x9400 .. 0x9800 )
if ( {address[RG:PAD10],{PAD10{1'b0}}} == 28'h9400 ) begin
src_channel = 34'b0000000000000000000000000000010000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 33;
end
// ( 0x9800 .. 0x9880 )
if ( {address[RG:PAD11],{PAD11{1'b0}}} == 28'h9800 ) begin
src_channel = 34'b0000000000000000000000000000000100;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 2;
end
// ( 0x9880 .. 0x9900 )
if ( {address[RG:PAD12],{PAD12{1'b0}}} == 28'h9880 ) begin
src_channel = 34'b0000000000000000000000000000000010;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 5;
end
// ( 0x9900 .. 0x9940 )
if ( {address[RG:PAD13],{PAD13{1'b0}}} == 28'h9900 ) begin
src_channel = 34'b0000000000000000000000010000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 15;
end
// ( 0x9940 .. 0x9980 )
if ( {address[RG:PAD14],{PAD14{1'b0}}} == 28'h9940 ) begin
src_channel = 34'b0000000000000000000000001000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 7;
end
// ( 0x9980 .. 0x99c0 )
if ( {address[RG:PAD15],{PAD15{1'b0}}} == 28'h9980 ) begin
src_channel = 34'b0000000000000000000000000100000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 6;
end
// ( 0x99c0 .. 0x9a00 )
if ( {address[RG:PAD16],{PAD16{1'b0}}} == 28'h99c0 ) begin
src_channel = 34'b0000000000000000000000000010000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 4;
end
// ( 0x9a00 .. 0x9a40 )
if ( {address[RG:PAD17],{PAD17{1'b0}}} == 28'h9a00 ) begin
src_channel = 34'b0000000000000000000000000001000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 3;
end
// ( 0x9a40 .. 0x9a60 )
if ( {address[RG:PAD18],{PAD18{1'b0}}} == 28'h9a40 ) begin
src_channel = 34'b0100000000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 1;
end
// ( 0x9a60 .. 0x9a80 )
if ( {address[RG:PAD19],{PAD19{1'b0}}} == 28'h9a60 ) begin
src_channel = 34'b0000000000000100000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 8;
end
// ( 0x9a80 .. 0x9aa0 )
if ( {address[RG:PAD20],{PAD20{1'b0}}} == 28'h9a80 ) begin
src_channel = 34'b0000000000000010000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 10;
end
// ( 0x9aa0 .. 0x9ac0 )
if ( {address[RG:PAD21],{PAD21{1'b0}}} == 28'h9aa0 ) begin
src_channel = 34'b0000000000000000010000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 20;
end
// ( 0x9ac0 .. 0x9ae0 )
if ( {address[RG:PAD22],{PAD22{1'b0}}} == 28'h9ac0 ) begin
src_channel = 34'b0000000000000000001000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 11;
end
// ( 0x9af0 .. 0x9b00 )
if ( {address[RG:PAD23],{PAD23{1'b0}}} == 28'h9af0 ) begin
src_channel = 34'b0010000000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 0;
end
// ( 0x9b00 .. 0x9b10 )
if ( {address[RG:PAD24],{PAD24{1'b0}}} == 28'h9b00 ) begin
src_channel = 34'b0001000000000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 24;
end
// ( 0x9b10 .. 0x9b20 )
if ( {address[RG:PAD25],{PAD25{1'b0}}} == 28'h9b10 && read_transaction ) begin
src_channel = 34'b0000000010000000000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 13;
end
// ( 0x9b20 .. 0x9b30 )
if ( {address[RG:PAD26],{PAD26{1'b0}}} == 28'h9b20 && read_transaction ) begin
src_channel = 34'b0000000000000001000000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 12;
end
// ( 0x9b30 .. 0x9b40 )
if ( {address[RG:PAD27],{PAD27{1'b0}}} == 28'h9b30 && read_transaction ) begin
src_channel = 34'b0000000000000000100000000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 9;
end
// ( 0x9b40 .. 0x9b50 )
if ( {address[RG:PAD28],{PAD28{1'b0}}} == 28'h9b40 ) begin
src_channel = 34'b0000000000000000000001000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 18;
end
// ( 0x9b58 .. 0x9b60 )
if ( {address[RG:PAD29],{PAD29{1'b0}}} == 28'h9b58 && read_transaction ) begin
src_channel = 34'b0000000000000000000000000000100000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 19;
end
// ( 0x9b60 .. 0x9b68 )
if ( {address[RG:PAD30],{PAD30{1'b0}}} == 28'h9b60 ) begin
src_channel = 34'b0000000000000000000000000000000001;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 16;
end
// ( 0x40000 .. 0x80000 )
if ( {address[RG:PAD31],{PAD31{1'b0}}} == 28'h40000 ) begin
src_channel = 34'b0000000000000000000010000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 17;
end
// ( 0x400000 .. 0x600000 )
if ( {address[RG:PAD32],{PAD32{1'b0}}} == 28'h400000 ) begin
src_channel = 34'b0000000000000000000000000000001000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 22;
end
// ( 0x8000000 .. 0x10000000 )
if ( {address[RG:PAD33],{PAD33{1'b0}}} == 28'h8000000 ) begin
src_channel = 34'b0000000000000000000100000000000000;
src_data[PKT_DEST_ID_H:PKT_DEST_ID_L] = 21;
end
end
// --------------------------------------------------
// Ceil(log2()) function
// --------------------------------------------------
function integer log2ceil;
input reg[65:0] val;
reg [65:0] i;
begin
i = 1;
log2ceil = 0;
while (i < val) begin
log2ceil = log2ceil + 1;
i = i << 1;
end
end
endfunction
endmodule