`include "pronoc_def.v"
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`include "pronoc_def.v"
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|
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/**********************************************************************
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/**********************************************************************
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** File: comb-nonspec.v
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** File: comb-nonspec.v
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**
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**
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** Copyright (C) 2014-2017 Alireza Monemi
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** Copyright (C) 2014-2017 Alireza Monemi
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**
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**
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** This file is part of ProNoC
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** This file is part of ProNoC
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**
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**
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** ProNoC ( stands for Prototype Network-on-chip) is free software:
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** ProNoC ( stands for Prototype Network-on-chip) is free software:
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** you can redistribute it and/or modify it under the terms of the GNU
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** you can redistribute it and/or modify it under the terms of the GNU
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** Lesser General Public License as published by the Free Software Foundation,
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** Lesser General Public License as published by the Free Software Foundation,
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** either version 2 of the License, or (at your option) any later version.
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** either version 2 of the License, or (at your option) any later version.
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**
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**
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** ProNoC is distributed in the hope that it will be useful, but WITHOUT
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** ProNoC is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** Public License for more details.
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** Public License for more details.
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**
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**
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** You should have received a copy of the GNU Lesser General Public
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** You should have received a copy of the GNU Lesser General Public
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** License along with ProNoC. If not, see .
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** License along with ProNoC. If not, see .
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**
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**
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**
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**
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** Description:
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** Description:
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** VC allocator combined with non-speculative switch
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** VC allocator combined with non-speculative switch
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** allocator where the free VC availability is checked at
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** allocator where the free VC availability is checked at
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** the beginning of switch allocation (comb-nonspec).
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** the beginning of switch allocation (comb-nonspec).
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**
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**
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***********************************************************************/
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***********************************************************************/
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module comb_nonspec_allocator
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module comb_nonspec_allocator # (
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import pronoc_pkg::*;
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parameter NOC_ID = 0,
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#(
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parameter P = 5 //port number
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parameter P = 5 //port number
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)
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)(
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(
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//VC allocator
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//VC allocator
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//input
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//input
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dest_port_all, // from input port
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dest_port_all, // from input port
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masked_ovc_request_all,
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masked_ovc_request_all,
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pck_is_single_flit_all,
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pck_is_single_flit_all,
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|
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//output
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//output
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ovc_allocated_all,//to the output port
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ovc_allocated_all,//to the output port
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granted_ovc_num_all, // to the input port
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granted_ovc_num_all, // to the input port
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ivc_num_getting_ovc_grant,
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ivc_num_getting_ovc_grant,
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//switch_alloc
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//switch_alloc
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ivc_info,
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ivc_info,
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vc_weight_is_consumed_all,
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vc_weight_is_consumed_all,
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iport_weight_is_consumed_all,
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iport_weight_is_consumed_all,
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//output
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//output
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granted_dest_port_all,
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granted_dest_port_all,
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ivc_num_getting_sw_grant,
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ivc_num_getting_sw_grant,
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nonspec_first_arbiter_granted_ivc_all,
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nonspec_first_arbiter_granted_ivc_all,
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any_ivc_sw_request_granted_all,
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any_ivc_sw_request_granted_all,
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any_ovc_granted_in_outport_all,
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any_ovc_granted_in_outport_all,
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granted_dst_is_from_a_single_flit_pck,
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granted_dst_is_from_a_single_flit_pck,
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// global
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// global
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clk,
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clk,
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reset
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reset
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);
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);
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`NOC_CONF
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localparam
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localparam
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P_1 = (SELF_LOOP_EN == "NO")? P-1 : P,
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P_1 = (SELF_LOOP_EN == "NO")? P-1 : P,
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PV = V * P,
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PV = V * P,
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VV = V * V,
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VV = V * V,
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VP_1 = V * P_1,
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VP_1 = V * P_1,
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PP_1 = P_1 * P,
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PP_1 = P_1 * P,
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PVV = PV * V,
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PVV = PV * V,
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PVP_1 = PV * P_1;
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PVP_1 = PV * P_1;
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input ivc_info_t ivc_info [P-1 : 0][V-1 : 0];
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input ivc_info_t ivc_info [P-1 : 0][V-1 : 0];
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input [PVV-1 : 0] masked_ovc_request_all;
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input [PVV-1 : 0] masked_ovc_request_all;
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input [PVP_1-1 : 0] dest_port_all;
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input [PVP_1-1 : 0] dest_port_all;
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input [PV-1 : 0] pck_is_single_flit_all;
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input [PV-1 : 0] pck_is_single_flit_all;
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output [PV-1 : 0] ovc_allocated_all;
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output [PV-1 : 0] ovc_allocated_all;
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output [PVV-1 : 0] granted_ovc_num_all;
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output [PVV-1 : 0] granted_ovc_num_all;
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output [PV-1 : 0] ivc_num_getting_ovc_grant;
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output [PV-1 : 0] ivc_num_getting_ovc_grant;
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output [PP_1-1 : 0] granted_dest_port_all;
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output [PP_1-1 : 0] granted_dest_port_all;
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output [PV-1 : 0] ivc_num_getting_sw_grant;
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output [PV-1 : 0] ivc_num_getting_sw_grant;
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output [P-1 : 0] any_ivc_sw_request_granted_all;
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output [P-1 : 0] any_ivc_sw_request_granted_all;
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output [P-1 : 0] any_ovc_granted_in_outport_all;
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output [P-1 : 0] any_ovc_granted_in_outport_all;
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output [PV-1 : 0] nonspec_first_arbiter_granted_ivc_all;
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output [PV-1 : 0] nonspec_first_arbiter_granted_ivc_all;
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// input [PVP_1-1 : 0] lk_destination_all;
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input clk,reset;
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input clk,reset;
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input [PV-1 : 0] vc_weight_is_consumed_all;
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input [PV-1 : 0] vc_weight_is_consumed_all;
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input [P-1 : 0] iport_weight_is_consumed_all;
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input [P-1 : 0] iport_weight_is_consumed_all;
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output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
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output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
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//internal wires switch allocator
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//internal wires switch allocator
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wire [PV-1 : 0] first_arbiter_granted_ivc_all;
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wire [PV-1 : 0] first_arbiter_granted_ivc_all;
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wire [PV-1 : 0] ivc_request_masked_all;
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wire [PV-1 : 0] ivc_request_masked_all;
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wire [P-1 : 0] any_cand_ovc_exsit;
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wire [P-1 : 0] any_cand_ovc_exsit;
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wire [PV-1 : 0] ivc_request_all;
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wire [PV-1 : 0] ivc_request_all;
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wire [PV-1 : 0] ovc_is_assigned_all;
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wire [PV-1 : 0] ovc_is_assigned_all;
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wire [PV-1 : 0] assigned_ovc_not_full_all;
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wire [PV-1 : 0] assigned_ovc_not_full_all;
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assign nonspec_first_arbiter_granted_ivc_all = first_arbiter_granted_ivc_all;
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assign nonspec_first_arbiter_granted_ivc_all = first_arbiter_granted_ivc_all;
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//nonspeculative switch allocator
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//nonspeculative switch allocator
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nonspec_sw_alloc #(
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nonspec_sw_alloc #(
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.V(V),
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.V(V),
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.P(P),
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.P(P),
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.FIRST_ARBITER_EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
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.FIRST_ARBITER_EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
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.SWA_ARBITER_TYPE (SWA_ARBITER_TYPE),
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.SWA_ARBITER_TYPE (SWA_ARBITER_TYPE),
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.MIN_PCK_SIZE(MIN_PCK_SIZE),
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.MIN_PCK_SIZE(MIN_PCK_SIZE),
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.SELF_LOOP_EN(SELF_LOOP_EN)
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.SELF_LOOP_EN(SELF_LOOP_EN)
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)
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)
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nonspeculative_sw_allocator
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nonspeculative_sw_allocator
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(
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(
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.ivc_granted_all (ivc_num_getting_sw_grant),
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.ivc_granted_all (ivc_num_getting_sw_grant),
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.ivc_request_masked_all (ivc_request_masked_all),
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.ivc_request_masked_all (ivc_request_masked_all),
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.pck_is_single_flit_all(pck_is_single_flit_all),
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.pck_is_single_flit_all(pck_is_single_flit_all),
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.granted_dst_is_from_a_single_flit_pck(granted_dst_is_from_a_single_flit_pck),
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.granted_dst_is_from_a_single_flit_pck(granted_dst_is_from_a_single_flit_pck),
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.dest_port_all (dest_port_all),
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.dest_port_all (dest_port_all),
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.granted_dest_port_all (granted_dest_port_all),
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.granted_dest_port_all (granted_dest_port_all),
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.first_arbiter_granted_ivc_all (first_arbiter_granted_ivc_all),
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.first_arbiter_granted_ivc_all (first_arbiter_granted_ivc_all),
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.any_ivc_granted_all (any_ivc_sw_request_granted_all),
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.any_ivc_granted_all (any_ivc_sw_request_granted_all),
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.any_ovc_granted_all (any_ovc_granted_in_outport_all),
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.any_ovc_granted_all (any_ovc_granted_in_outport_all),
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.vc_weight_is_consumed_all(vc_weight_is_consumed_all),
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.vc_weight_is_consumed_all(vc_weight_is_consumed_all),
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.iport_weight_is_consumed_all(iport_weight_is_consumed_all),
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.iport_weight_is_consumed_all(iport_weight_is_consumed_all),
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.clk (clk),
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.clk (clk),
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.reset (reset)
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.reset (reset)
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);
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);
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wire [PVV-1 : 0] masked_ovc_request_all;
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wire [PVV-1 : 0] masked_ovc_request_all;
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wire [V-1 : 0] masked_non_assigned_request [PV-1 : 0] ;
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wire [V-1 : 0] masked_non_assigned_request [PV-1 : 0] ;
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wire [PV-1 : 0] masked_assigned_request;
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wire [PV-1 : 0] masked_assigned_request;
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wire [PV-1 : 0] assigned_ovc_request_all ;
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wire [PV-1 : 0] assigned_ovc_request_all ;
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wire [VV-1 : 0] masked_candidate_ovc_per_port [P-1 : 0] ;
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wire [VV-1 : 0] masked_candidate_ovc_per_port [P-1 : 0] ;
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wire [V-1 : 0] first_arbiter_granted_ivc_per_port[P-1 : 0] ;
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wire [V-1 : 0] first_arbiter_granted_ivc_per_port[P-1 : 0] ;
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wire [V-1 : 0] candidate_ovc_local_num [P-1 : 0] ;
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wire [V-1 : 0] candidate_ovc_local_num [P-1 : 0] ;
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wire [V-1 : 0] first_arbiter_ovc_granted [PV-1 : 0];
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wire [V-1 : 0] first_arbiter_ovc_granted [PV-1 : 0];
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wire [P_1-1 : 0] granted_dest_port_per_port [P-1 : 0];
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wire [P_1-1 : 0] granted_dest_port_per_port [P-1 : 0];
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wire [VP_1-1 : 0] cand_ovc_granted [P-1 : 0];
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wire [VP_1-1 : 0] cand_ovc_granted [P-1 : 0];
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wire [P_1-1 : 0] ovc_allocated_all_gen [PV-1 : 0];
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wire [P_1-1 : 0] ovc_allocated_all_gen [PV-1 : 0];
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wire [V-1 : 0] granted_ovc_local_num_per_port [P-1 : 0];
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wire [V-1 : 0] granted_ovc_local_num_per_port [P-1 : 0];
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wire [V-1 : 0] ivc_local_num_getting_ovc_grant[P-1 : 0];
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wire [V-1 : 0] ivc_local_num_getting_ovc_grant[P-1 : 0];
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wire [V : 0] summ_in [PV-1 : 0];
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wire [V : 0] summ_in [PV-1 : 0];
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wire [V-1 : 0] vc_pririty [PV-1 : 0] ;
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wire [V-1 : 0] vc_pririty [PV-1 : 0] ;
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assign assigned_ovc_request_all = ivc_request_all & ovc_is_assigned_all;
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assign assigned_ovc_request_all = ivc_request_all & ovc_is_assigned_all;
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genvar i,j;
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genvar i,j;
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generate
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generate
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// IVC loop
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// IVC loop
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for(i=0;i< PV;i=i+1) begin :total_vc_loop
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for(i=0;i< PV;i=i+1) begin :total_vc_loop
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// mask unavailable ovc from requests
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// mask unavailable ovc from requests
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assign masked_non_assigned_request [i] = masked_ovc_request_all [(i+1)*V-1 : i*V ];
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assign masked_non_assigned_request [i] = masked_ovc_request_all [(i+1)*V-1 : i*V ];
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assign masked_assigned_request [i] = assigned_ovc_not_full_all [i] & assigned_ovc_request_all [i];
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assign masked_assigned_request [i] = assigned_ovc_not_full_all [i] & assigned_ovc_request_all [i];
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|
|
// summing assigned and non-assigned VC requests
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// summing assigned and non-assigned VC requests
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assign summ_in[i] ={masked_non_assigned_request [i],masked_assigned_request [i]};
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assign summ_in[i] ={masked_non_assigned_request [i],masked_assigned_request [i]};
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assign ivc_request_masked_all[i] = | summ_in[i];
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assign ivc_request_masked_all[i] = | summ_in[i];
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|
|
|
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//first level arbiter to candidate only one OVC
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//first level arbiter to candidate only one OVC
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// if(VC_ARBITER_TYPE=="RRA")begin :round_robin
|
//if(VC_ARBITER_TYPE=="RRA")begin :round_robin
|
|
|
arbiter #(
|
arbiter #(
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.ARBITER_WIDTH(V)
|
.ARBITER_WIDTH(V)
|
)
|
)
|
ovc_arbiter
|
ovc_arbiter
|
(
|
(
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.clk (clk),
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.clk (clk),
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.reset (reset),
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.reset (reset),
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.request (masked_non_assigned_request [i]),
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.request (masked_non_assigned_request [i]),
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.grant (first_arbiter_ovc_granted[i]),
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.grant (first_arbiter_ovc_granted[i]),
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.any_grant ()
|
.any_grant ()
|
);
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);
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/*
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/*
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end else begin :fixarb
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end else begin :fixarb
|
|
|
vc_priority_based_dest_port#(
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vc_priority_based_dest_port#(
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.P(P),
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.P(P),
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.V(V)
|
.V(V)
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)
|
)
|
priority_setting
|
priority_setting
|
(
|
(
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.dest_port(lk_destination_all [((i+1)*P_1)-1 : i*P_1]),
|
.dest_port(lk_destination_all [((i+1)*P_1)-1 : i*P_1]),
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.vc_pririty(vc_pririty[i])
|
.vc_pririty(vc_pririty[i])
|
);
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);
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|
|
|
|
|
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arbiter_ext_priority #(
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arbiter_ext_priority #(
|
.ARBITER_WIDTH (V)
|
.ARBITER_WIDTH (V)
|
)
|
)
|
ovc_arbiter
|
ovc_arbiter
|
(
|
(
|
.request (masked_non_assigned_request [i]),
|
.request (masked_non_assigned_request [i]),
|
.priority_in(vc_pririty[i]),
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.priority_in(vc_pririty[i]),
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.grant(first_arbiter_ovc_granted[i]),
|
.grant(first_arbiter_ovc_granted[i]),
|
.any_grant()
|
.any_grant()
|
);
|
);
|
|
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end
|
end
|
*/
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*/
|
|
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end//for
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end//for
|
|
|
wire [P-1 : 0] ovc_assigned_local;
|
wire [P-1 : 0] ovc_assigned_local;
|
|
|
for(i=0;i< P;i=i+1) begin :port_loop3
|
for(i=0;i< P;i=i+1) begin :port_loop3
|
for(j=0;j< V;j=j+1) begin :vc_loop
|
for(j=0;j< V;j=j+1) begin :vc_loop
|
//merge masked_candidate_ovc in each port
|
//merge masked_candidate_ovc in each port
|
|
|
assign ivc_request_all[i*V+j] = ivc_info[i][j].ivc_req;
|
assign ivc_request_all[i*V+j] = ivc_info[i][j].ivc_req;
|
assign ovc_is_assigned_all[i*V+j] = ivc_info[i][j].ovc_is_assigned;
|
assign ovc_is_assigned_all[i*V+j] = ivc_info[i][j].ovc_is_assigned;
|
assign assigned_ovc_not_full_all[i*V+j] =ivc_info[i][j].assigned_ovc_not_full;
|
assign assigned_ovc_not_full_all[i*V+j] =ivc_info[i][j].assigned_ovc_not_full;
|
|
|
|
|
assign masked_candidate_ovc_per_port[i][(j+1)*V-1 : j*V] = first_arbiter_ovc_granted [i*V+j];
|
assign masked_candidate_ovc_per_port[i][(j+1)*V-1 : j*V] = first_arbiter_ovc_granted [i*V+j];
|
end//for j
|
end//for j
|
|
|
assign first_arbiter_granted_ivc_per_port[i]=first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V];
|
assign first_arbiter_granted_ivc_per_port[i]=first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V];
|
assign granted_dest_port_per_port[i]=granted_dest_port_all[(i+1)*P_1-1 : i*P_1];
|
assign granted_dest_port_per_port[i]=granted_dest_port_all[(i+1)*P_1-1 : i*P_1];
|
|
|
|
|
// multiplex candidate OVC of first level switch allocatore winner
|
// multiplex candidate OVC of first level switch allocatore winner
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W (V),
|
.W (V),
|
.N (V)
|
.N (V)
|
)
|
)
|
multiplexer2
|
multiplexer2
|
(
|
(
|
.in (masked_candidate_ovc_per_port [i]),
|
.in (masked_candidate_ovc_per_port [i]),
|
.out (candidate_ovc_local_num [i]),
|
.out (candidate_ovc_local_num [i]),
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
|
|
);
|
);
|
|
|
|
|
|
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W (1),
|
.W (1),
|
.N (V)
|
.N (V)
|
)
|
)
|
multiplexer2_1
|
multiplexer2_1
|
(
|
(
|
.in (ovc_is_assigned_all[(i+1)*V-1 : i*V]),
|
.in (ovc_is_assigned_all[(i+1)*V-1 : i*V]),
|
.out (ovc_assigned_local[i]),
|
.out (ovc_assigned_local[i]),
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
|
|
);
|
);
|
|
|
|
|
// assign any_cand_ovc_exsit[i] = | candidate_ovc_local_num [i];
|
// assign any_cand_ovc_exsit[i] = | candidate_ovc_local_num [i];
|
|
|
|
|
//demultiplexer
|
//demultiplexer
|
one_hot_demux #(
|
one_hot_demux #(
|
.IN_WIDTH(V),
|
.IN_WIDTH(V),
|
.SEL_WIDTH(P_1)
|
.SEL_WIDTH(P_1)
|
)
|
)
|
demux1
|
demux1
|
(
|
(
|
.demux_sel(granted_dest_port_per_port [i]),//selectore
|
.demux_sel(granted_dest_port_per_port [i]),//selectore
|
.demux_in(candidate_ovc_local_num[i]),//repeated
|
.demux_in(candidate_ovc_local_num[i]),//repeated
|
.demux_out(cand_ovc_granted [i])
|
.demux_out(cand_ovc_granted [i])
|
);
|
);
|
|
|
assign granted_ovc_local_num_per_port [i]=(any_ivc_sw_request_granted_all[i] )? candidate_ovc_local_num[i] : {V{1'b0}};
|
assign granted_ovc_local_num_per_port [i]=(any_ivc_sw_request_granted_all[i] )? candidate_ovc_local_num[i] : {V{1'b0}};
|
assign ivc_local_num_getting_ovc_grant [i]= (any_ivc_sw_request_granted_all[i] & ~ovc_assigned_local[i])? first_arbiter_granted_ivc_per_port [i] : {V{1'b0}};
|
assign ivc_local_num_getting_ovc_grant [i]= (any_ivc_sw_request_granted_all[i] & ~ovc_assigned_local[i])? first_arbiter_granted_ivc_per_port [i] : {V{1'b0}};
|
assign ivc_num_getting_ovc_grant [(i+1)*V-1 : i*V] = ivc_local_num_getting_ovc_grant[i];
|
assign ivc_num_getting_ovc_grant [(i+1)*V-1 : i*V] = ivc_local_num_getting_ovc_grant[i];
|
for(j=0;j
|
for(j=0;j
|
assign granted_ovc_num_all[(i*VV)+((j+1)*V)-1 : (i*VV)+(j*V)]=granted_ovc_local_num_per_port[i];
|
assign granted_ovc_num_all[(i*VV)+((j+1)*V)-1 : (i*VV)+(j*V)]=granted_ovc_local_num_per_port[i];
|
end//j
|
end//j
|
end//i
|
end//i
|
|
|
|
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop2
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop2
|
for(j=0;j
|
for(j=0;j
|
if(SELF_LOOP_EN == "NO") begin :nslp
|
if(SELF_LOOP_EN == "NO") begin :nslp
|
if((i/V)
|
if((i/V)
|
assign ovc_allocated_all_gen[i][j-1] = cand_ovc_granted[j][i];
|
assign ovc_allocated_all_gen[i][j-1] = cand_ovc_granted[j][i];
|
end else if((i/V)>j) begin: hh
|
end else if((i/V)>j) begin: hh
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i-V];
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i-V];
|
|
|
end
|
end
|
end else begin : slp
|
end else begin : slp
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i];
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i];
|
end
|
end
|
end//j
|
end//j
|
|
|
assign ovc_allocated_all [i] = |ovc_allocated_all_gen[i];
|
assign ovc_allocated_all [i] = |ovc_allocated_all_gen[i];
|
|
|
end//i
|
end//i
|
|
|
endgenerate
|
endgenerate
|
|
|
endmodule
|
endmodule
|
|
|
|
|
|
|
|
|
/**************************************************************
|
/**************************************************************
|
*
|
*
|
* comb_nonspec_v2
|
* comb_nonspec_v2
|
*
|
*
|
* first arbiter has been shifted after first multiplexer
|
* first arbiter has been shifted after first multiplexer
|
*
|
*
|
*
|
*
|
*********************************************************/
|
*********************************************************/
|
|
|
|
|
|
|
module comb_nonspec_v2_allocator #(
|
module comb_nonspec_v2_allocator #(
|
parameter V = 4,
|
parameter V = 4,
|
parameter P = 5,
|
parameter P = 5,
|
parameter FIRST_ARBITER_EXT_P_EN = 1,
|
parameter FIRST_ARBITER_EXT_P_EN = 1,
|
parameter SWA_ARBITER_TYPE = "WRRA",
|
parameter SWA_ARBITER_TYPE = "WRRA",
|
parameter MIN_PCK_SIZE=2, //minimum packet size in flits. The minimum value is 1.
|
parameter MIN_PCK_SIZE=2, //minimum packet size in flits. The minimum value is 1.
|
parameter SELF_LOOP_EN= "NO"
|
parameter SELF_LOOP_EN= "NO"
|
|
|
)(
|
)(
|
//VC allocator
|
//VC allocator
|
//input
|
//input
|
dest_port_all, // from input port
|
dest_port_all, // from input port
|
ovc_is_assigned_all, //
|
ovc_is_assigned_all, //
|
masked_ovc_request_all,
|
masked_ovc_request_all,
|
pck_is_single_flit_all,
|
pck_is_single_flit_all,
|
|
|
//output
|
//output
|
ovc_allocated_all,//to the output port
|
ovc_allocated_all,//to the output port
|
granted_ovc_num_all, // to the input port
|
granted_ovc_num_all, // to the input port
|
ivc_num_getting_ovc_grant,
|
ivc_num_getting_ovc_grant,
|
|
|
//switch_alloc
|
//switch_alloc
|
ivc_request_all,
|
ivc_request_all,
|
assigned_ovc_not_full_all,
|
assigned_ovc_not_full_all,
|
vc_weight_is_consumed_all,
|
vc_weight_is_consumed_all,
|
iport_weight_is_consumed_all,
|
iport_weight_is_consumed_all,
|
|
|
//output
|
//output
|
granted_dest_port_all,
|
granted_dest_port_all,
|
ivc_num_getting_sw_grant,
|
ivc_num_getting_sw_grant,
|
nonspec_first_arbiter_granted_ivc_all,
|
nonspec_first_arbiter_granted_ivc_all,
|
any_ivc_sw_request_granted_all,
|
any_ivc_sw_request_granted_all,
|
any_ovc_granted_in_outport_all,
|
any_ovc_granted_in_outport_all,
|
granted_dst_is_from_a_single_flit_pck,
|
granted_dst_is_from_a_single_flit_pck,
|
|
|
// global
|
// global
|
clk,
|
clk,
|
reset
|
reset
|
|
|
);
|
);
|
|
|
|
|
localparam
|
localparam
|
P_1 = (SELF_LOOP_EN == "NO") ? P-1 :P,
|
P_1 = (SELF_LOOP_EN == "NO") ? P-1 :P,
|
PV = V * P,
|
PV = V * P,
|
VV = V * V,
|
VV = V * V,
|
VP_1 = V * P_1,
|
VP_1 = V * P_1,
|
PP_1 = P_1 * P,
|
PP_1 = P_1 * P,
|
PVV = PV * V,
|
PVV = PV * V,
|
PVP_1 = PV * P_1;
|
PVP_1 = PV * P_1;
|
|
|
|
|
|
|
|
|
input [PVV-1 : 0] masked_ovc_request_all;
|
input [PVV-1 : 0] masked_ovc_request_all;
|
input [PVP_1-1 : 0] dest_port_all;
|
input [PVP_1-1 : 0] dest_port_all;
|
input [PV-1 : 0] ovc_is_assigned_all;
|
input [PV-1 : 0] ovc_is_assigned_all;
|
input [PV-1 : 0] pck_is_single_flit_all;
|
input [PV-1 : 0] pck_is_single_flit_all;
|
output [PV-1 : 0] ovc_allocated_all;
|
output [PV-1 : 0] ovc_allocated_all;
|
output [PVV-1 : 0] granted_ovc_num_all;
|
output [PVV-1 : 0] granted_ovc_num_all;
|
output [PV-1 : 0] ivc_num_getting_ovc_grant;
|
output [PV-1 : 0] ivc_num_getting_ovc_grant;
|
input [PV-1 : 0] ivc_request_all;
|
input [PV-1 : 0] ivc_request_all;
|
input [PV-1 : 0] assigned_ovc_not_full_all;
|
input [PV-1 : 0] assigned_ovc_not_full_all;
|
output [PP_1-1 : 0] granted_dest_port_all;
|
output [PP_1-1 : 0] granted_dest_port_all;
|
output [PV-1 : 0] ivc_num_getting_sw_grant;
|
output [PV-1 : 0] ivc_num_getting_sw_grant;
|
output [P-1 : 0] any_ivc_sw_request_granted_all;
|
output [P-1 : 0] any_ivc_sw_request_granted_all;
|
output [P-1 : 0] any_ovc_granted_in_outport_all;
|
output [P-1 : 0] any_ovc_granted_in_outport_all;
|
output [PV-1 : 0] nonspec_first_arbiter_granted_ivc_all;
|
output [PV-1 : 0] nonspec_first_arbiter_granted_ivc_all;
|
input clk,reset;
|
input clk,reset;
|
input [PV-1 : 0] vc_weight_is_consumed_all;
|
input [PV-1 : 0] vc_weight_is_consumed_all;
|
input [P-1 : 0] iport_weight_is_consumed_all;
|
input [P-1 : 0] iport_weight_is_consumed_all;
|
|
|
//internal wires switch allocator
|
//internal wires switch allocator
|
wire [PV-1 : 0] first_arbiter_granted_ivc_all;
|
wire [PV-1 : 0] first_arbiter_granted_ivc_all;
|
wire [PV-1 : 0] ivc_request_masked_all;
|
wire [PV-1 : 0] ivc_request_masked_all;
|
wire [P-1 : 0] any_cand_ovc_exsit;
|
wire [P-1 : 0] any_cand_ovc_exsit;
|
output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
|
output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
|
|
|
assign nonspec_first_arbiter_granted_ivc_all = first_arbiter_granted_ivc_all;
|
assign nonspec_first_arbiter_granted_ivc_all = first_arbiter_granted_ivc_all;
|
|
|
//nonspeculative switch allocator
|
//nonspeculative switch allocator
|
nonspec_sw_alloc #(
|
nonspec_sw_alloc #(
|
.V(V),
|
.V(V),
|
.P(P),
|
.P(P),
|
.FIRST_ARBITER_EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
|
.FIRST_ARBITER_EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
|
.SWA_ARBITER_TYPE(SWA_ARBITER_TYPE),
|
.SWA_ARBITER_TYPE(SWA_ARBITER_TYPE),
|
.MIN_PCK_SIZE(MIN_PCK_SIZE)
|
.MIN_PCK_SIZE(MIN_PCK_SIZE)
|
)
|
)
|
nonspeculative_sw_allocator
|
nonspeculative_sw_allocator
|
(
|
(
|
|
|
.ivc_granted_all (ivc_num_getting_sw_grant),
|
.ivc_granted_all (ivc_num_getting_sw_grant),
|
.ivc_request_masked_all (ivc_request_masked_all),
|
.ivc_request_masked_all (ivc_request_masked_all),
|
.pck_is_single_flit_all(pck_is_single_flit_all),
|
.pck_is_single_flit_all(pck_is_single_flit_all),
|
.granted_dst_is_from_a_single_flit_pck(granted_dst_is_from_a_single_flit_pck),
|
.granted_dst_is_from_a_single_flit_pck(granted_dst_is_from_a_single_flit_pck),
|
.dest_port_all (dest_port_all),
|
.dest_port_all (dest_port_all),
|
.granted_dest_port_all (granted_dest_port_all),
|
.granted_dest_port_all (granted_dest_port_all),
|
.first_arbiter_granted_ivc_all (first_arbiter_granted_ivc_all),
|
.first_arbiter_granted_ivc_all (first_arbiter_granted_ivc_all),
|
//.first_arbiter_granted_port_all (first_arbiter_granted_port_all),
|
//.first_arbiter_granted_port_all (first_arbiter_granted_port_all),
|
.any_ivc_granted_all (any_ivc_sw_request_granted_all),
|
.any_ivc_granted_all (any_ivc_sw_request_granted_all),
|
.any_ovc_granted_all (any_ovc_granted_in_outport_all),
|
.any_ovc_granted_all (any_ovc_granted_in_outport_all),
|
.vc_weight_is_consumed_all(vc_weight_is_consumed_all),
|
.vc_weight_is_consumed_all(vc_weight_is_consumed_all),
|
.iport_weight_is_consumed_all(iport_weight_is_consumed_all),
|
.iport_weight_is_consumed_all(iport_weight_is_consumed_all),
|
.clk (clk),
|
.clk (clk),
|
.reset (reset)
|
.reset (reset)
|
|
|
);
|
);
|
|
|
wire [V-1 : 0] masked_non_assigned_request [PV-1 : 0] ;
|
wire [V-1 : 0] masked_non_assigned_request [PV-1 : 0] ;
|
wire [PV-1 : 0] masked_assigned_request;
|
wire [PV-1 : 0] masked_assigned_request;
|
wire [PV-1 : 0] assigned_ovc_request_all;
|
wire [PV-1 : 0] assigned_ovc_request_all;
|
wire [VV-1 : 0] masked_non_assigned_request_per_port [P-1 : 0] ;
|
wire [VV-1 : 0] masked_non_assigned_request_per_port [P-1 : 0] ;
|
wire [V-1 : 0] first_arbiter_granted_ivc_per_port[P-1 : 0] ;
|
wire [V-1 : 0] first_arbiter_granted_ivc_per_port[P-1 : 0] ;
|
wire [V-1 : 0] candidate_ovc_local_num [P-1 : 0] ;
|
wire [V-1 : 0] candidate_ovc_local_num [P-1 : 0] ;
|
wire [V-1 : 0] first_arbiter_ovc_granted [P-1:0];
|
wire [V-1 : 0] first_arbiter_ovc_granted [P-1:0];
|
wire [P_1-1 : 0] granted_dest_port_per_port [P-1 : 0];
|
wire [P_1-1 : 0] granted_dest_port_per_port [P-1 : 0];
|
wire [VP_1-1 : 0] cand_ovc_granted [P-1 : 0];
|
wire [VP_1-1 : 0] cand_ovc_granted [P-1 : 0];
|
wire [P_1-1 : 0] ovc_allocated_all_gen [PV-1 : 0];
|
wire [P_1-1 : 0] ovc_allocated_all_gen [PV-1 : 0];
|
wire [V-1 : 0] granted_ovc_local_num_per_port [P-1 : 0];
|
wire [V-1 : 0] granted_ovc_local_num_per_port [P-1 : 0];
|
wire [V-1 : 0] ivc_local_num_getting_ovc_grant[P-1 : 0];
|
wire [V-1 : 0] ivc_local_num_getting_ovc_grant[P-1 : 0];
|
wire [V : 0] summ_in [PV-1 : 0];
|
wire [V : 0] summ_in [PV-1 : 0];
|
|
|
|
|
assign assigned_ovc_request_all = ivc_request_all & ovc_is_assigned_all;
|
assign assigned_ovc_request_all = ivc_request_all & ovc_is_assigned_all;
|
|
|
genvar i,j;
|
genvar i,j;
|
generate
|
generate
|
|
|
// IVC loop
|
// IVC loop
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop
|
|
|
// mask unavailable ovc from requests
|
// mask unavailable ovc from requests
|
assign masked_non_assigned_request [i] = masked_ovc_request_all [(i+1)*V-1 : i*V ];
|
assign masked_non_assigned_request [i] = masked_ovc_request_all [(i+1)*V-1 : i*V ];
|
assign masked_assigned_request [i] = assigned_ovc_not_full_all[i] & assigned_ovc_request_all[i];
|
assign masked_assigned_request [i] = assigned_ovc_not_full_all[i] & assigned_ovc_request_all[i];
|
|
|
// summing assigned and non-assigned VC requests
|
// summing assigned and non-assigned VC requests
|
assign summ_in[i] ={masked_non_assigned_request [i],masked_assigned_request [i]};
|
assign summ_in[i] ={masked_non_assigned_request [i],masked_assigned_request [i]};
|
assign ivc_request_masked_all[i] = | summ_in[i];
|
assign ivc_request_masked_all[i] = | summ_in[i];
|
|
|
end//for
|
end//for
|
|
|
|
|
for(i=0;i< P;i=i+1) begin :port_loop3
|
for(i=0;i< P;i=i+1) begin :port_loop3
|
for(j=0;j< V;j=j+1) begin :vc_loop
|
for(j=0;j< V;j=j+1) begin :vc_loop
|
//merge masked_candidate_ovc in each port
|
//merge masked_candidate_ovc in each port
|
assign masked_non_assigned_request_per_port[i][(j+1)*V-1 : j*V] = masked_non_assigned_request [i*V+j];
|
assign masked_non_assigned_request_per_port[i][(j+1)*V-1 : j*V] = masked_non_assigned_request [i*V+j];
|
end//for j
|
end//for j
|
|
|
assign first_arbiter_granted_ivc_per_port[i]=first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V];
|
assign first_arbiter_granted_ivc_per_port[i]=first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V];
|
|
|
assign granted_dest_port_per_port[i]=granted_dest_port_all[(i+1)*P_1-1 : i*P_1];
|
assign granted_dest_port_per_port[i]=granted_dest_port_all[(i+1)*P_1-1 : i*P_1];
|
|
|
|
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W (V),
|
.W (V),
|
.N (V)
|
.N (V)
|
)
|
)
|
multiplexer2
|
multiplexer2
|
(
|
(
|
.in (masked_non_assigned_request_per_port [i]),
|
.in (masked_non_assigned_request_per_port [i]),
|
.out (candidate_ovc_local_num [i]),
|
.out (candidate_ovc_local_num [i]),
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
.sel (first_arbiter_granted_ivc_per_port [i])
|
|
|
);
|
);
|
|
|
|
|
assign any_cand_ovc_exsit[i] = | candidate_ovc_local_num [i];
|
assign any_cand_ovc_exsit[i] = | candidate_ovc_local_num [i];
|
|
|
//first level arbiter to candidate only one OVC
|
//first level arbiter to candidate only one OVC
|
arbiter #(
|
arbiter #(
|
.ARBITER_WIDTH (V)
|
.ARBITER_WIDTH (V)
|
)
|
)
|
first_arbiter
|
first_arbiter
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (candidate_ovc_local_num[i]),
|
.request (candidate_ovc_local_num[i]),
|
.grant (first_arbiter_ovc_granted[i]),
|
.grant (first_arbiter_ovc_granted[i]),
|
.any_grant ( )
|
.any_grant ( )
|
);
|
);
|
|
|
|
|
//demultiplexer
|
//demultiplexer
|
one_hot_demux #(
|
one_hot_demux #(
|
.IN_WIDTH (V),
|
.IN_WIDTH (V),
|
.SEL_WIDTH (P_1)
|
.SEL_WIDTH (P_1)
|
)
|
)
|
demux1
|
demux1
|
(
|
(
|
.demux_sel (granted_dest_port_per_port [i]),//selectore
|
.demux_sel (granted_dest_port_per_port [i]),//selectore
|
.demux_in (first_arbiter_ovc_granted[i]),//repeated
|
.demux_in (first_arbiter_ovc_granted[i]),//repeated
|
.demux_out (cand_ovc_granted [i])
|
.demux_out (cand_ovc_granted [i])
|
);
|
);
|
|
|
|
|
assign granted_ovc_local_num_per_port [i]=(any_ivc_sw_request_granted_all[i] )? first_arbiter_ovc_granted[i] : {V{1'b0}};
|
assign granted_ovc_local_num_per_port [i]=(any_ivc_sw_request_granted_all[i] )? first_arbiter_ovc_granted[i] : {V{1'b0}};
|
assign ivc_local_num_getting_ovc_grant [i]= (any_ivc_sw_request_granted_all[i] & any_cand_ovc_exsit[i])? first_arbiter_granted_ivc_per_port [i] : {V{1'b0}};
|
assign ivc_local_num_getting_ovc_grant [i]= (any_ivc_sw_request_granted_all[i] & any_cand_ovc_exsit[i])? first_arbiter_granted_ivc_per_port [i] : {V{1'b0}};
|
assign ivc_num_getting_ovc_grant [(i+1)*V-1 : i*V] = ivc_local_num_getting_ovc_grant[i];
|
assign ivc_num_getting_ovc_grant [(i+1)*V-1 : i*V] = ivc_local_num_getting_ovc_grant[i];
|
for(j=0;j
|
for(j=0;j
|
assign granted_ovc_num_all[(i*VV)+((j+1)*V)-1 : (i*VV)+(j*V)]=granted_ovc_local_num_per_port[i];
|
assign granted_ovc_num_all[(i*VV)+((j+1)*V)-1 : (i*VV)+(j*V)]=granted_ovc_local_num_per_port[i];
|
end//j
|
end//j
|
end//i
|
end//i
|
|
|
|
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop2
|
for(i=0;i< PV;i=i+1) begin :total_vc_loop2
|
for(j=0;j
|
for(j=0;j
|
if((i/V)
|
if((i/V)
|
assign ovc_allocated_all_gen[i][j-1] = cand_ovc_granted[j][i];
|
assign ovc_allocated_all_gen[i][j-1] = cand_ovc_granted[j][i];
|
end else if((i/V)>j) begin: hh
|
end else if((i/V)>j) begin: hh
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i-V];
|
assign ovc_allocated_all_gen[i][j] = cand_ovc_granted[j][i-V];
|
|
|
end
|
end
|
end//j
|
end//j
|
|
|
assign ovc_allocated_all [i] = |ovc_allocated_all_gen[i];
|
assign ovc_allocated_all [i] = |ovc_allocated_all_gen[i];
|
|
|
end//i
|
end//i
|
|
|
endgenerate
|
endgenerate
|
|
|
|
|
endmodule
|
endmodule
|
|
|
|
|
/********************************************
|
/********************************************
|
*
|
*
|
* nonspeculative switch allocator
|
* nonspeculative switch allocator
|
*
|
*
|
******************************************/
|
******************************************/
|
|
|
module nonspec_sw_alloc #(
|
module nonspec_sw_alloc #(
|
parameter V = 4,
|
parameter V = 4,
|
parameter P = 5,
|
parameter P = 5,
|
parameter FIRST_ARBITER_EXT_P_EN = 1,
|
parameter FIRST_ARBITER_EXT_P_EN = 1,
|
parameter SWA_ARBITER_TYPE = "WRRA",
|
parameter SWA_ARBITER_TYPE = "WRRA",
|
parameter MIN_PCK_SIZE=2, //minimum packet size in flits. The minimum value is 1.
|
parameter MIN_PCK_SIZE=2, //minimum packet size in flits. The minimum value is 1.
|
parameter SELF_LOOP_EN="NO"
|
parameter SELF_LOOP_EN="NO"
|
|
|
)(
|
)(
|
|
|
ivc_granted_all,
|
ivc_granted_all,
|
ivc_request_masked_all,
|
ivc_request_masked_all,
|
pck_is_single_flit_all,
|
pck_is_single_flit_all,
|
granted_dst_is_from_a_single_flit_pck,
|
granted_dst_is_from_a_single_flit_pck,
|
dest_port_all,
|
dest_port_all,
|
granted_dest_port_all,
|
granted_dest_port_all,
|
first_arbiter_granted_ivc_all,
|
first_arbiter_granted_ivc_all,
|
//first_arbiter_granted_port_all,
|
//first_arbiter_granted_port_all,
|
any_ivc_granted_all,
|
any_ivc_granted_all,
|
any_ovc_granted_all,
|
any_ovc_granted_all,
|
vc_weight_is_consumed_all,
|
vc_weight_is_consumed_all,
|
iport_weight_is_consumed_all,
|
iport_weight_is_consumed_all,
|
clk,
|
clk,
|
reset
|
reset
|
|
|
);
|
);
|
|
|
localparam
|
localparam
|
P_1 = (SELF_LOOP_EN== "NO") ? P-1 : P,
|
P_1 = (SELF_LOOP_EN== "NO") ? P-1 : P,
|
PV = V * P,
|
PV = V * P,
|
VP_1 = V * P_1,
|
VP_1 = V * P_1,
|
PP_1 = P_1 * P,
|
PP_1 = P_1 * P,
|
PVP_1 = PV * P_1,
|
PVP_1 = PV * P_1,
|
PP = P*P;
|
PP = P*P;
|
|
|
|
|
output [PV-1 : 0] ivc_granted_all;
|
output [PV-1 : 0] ivc_granted_all;
|
output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
|
output [P-1 : 0] granted_dst_is_from_a_single_flit_pck;
|
input [PV-1 : 0] ivc_request_masked_all;
|
input [PV-1 : 0] ivc_request_masked_all;
|
input [PV-1 : 0] pck_is_single_flit_all;
|
input [PV-1 : 0] pck_is_single_flit_all;
|
input [PVP_1-1 : 0] dest_port_all;
|
input [PVP_1-1 : 0] dest_port_all;
|
output [PP_1-1 : 0] granted_dest_port_all;
|
output [PP_1-1 : 0] granted_dest_port_all;
|
output [PV-1 : 0] first_arbiter_granted_ivc_all;
|
output [PV-1 : 0] first_arbiter_granted_ivc_all;
|
//output [PP_1-1 : 0] first_arbiter_granted_port_all;
|
//output [PP_1-1 : 0] first_arbiter_granted_port_all;
|
output [P-1 : 0] any_ivc_granted_all; //any ivc is granted in input port [i]
|
output [P-1 : 0] any_ivc_granted_all; //any ivc is granted in input port [i]
|
output [P-1 : 0] any_ovc_granted_all; //any ovc is granted in output port [i]
|
output [P-1 : 0] any_ovc_granted_all; //any ovc is granted in output port [i]
|
input clk, reset;
|
input clk, reset;
|
input [PV-1 : 0] vc_weight_is_consumed_all;
|
input [PV-1 : 0] vc_weight_is_consumed_all;
|
input [P-1: 0] iport_weight_is_consumed_all;
|
input [P-1: 0] iport_weight_is_consumed_all;
|
|
|
//separte input per port
|
//separte input per port
|
wire [V-1 : 0] ivc_granted [P-1 : 0];
|
wire [V-1 : 0] ivc_granted [P-1 : 0];
|
wire [V-1 : 0] pck_is_single_flit [P-1 : 0];
|
wire [V-1 : 0] pck_is_single_flit [P-1 : 0];
|
wire [VP_1-1 : 0] dest_port_ivc [P-1 : 0];
|
wire [VP_1-1 : 0] dest_port_ivc [P-1 : 0];
|
wire [P_1-1 : 0] granted_dest_port [P-1 : 0];
|
wire [P_1-1 : 0] granted_dest_port [P-1 : 0];
|
wire [P_1-1 : 0] single_flit_granted_dst [P-1 : 0];
|
wire [P_1-1 : 0] single_flit_granted_dst [P-1 : 0];
|
wire [PP-1 : 0] single_flit_granted_dst_all;
|
wire [PP-1 : 0] single_flit_granted_dst_all;
|
|
|
// internal wires
|
// internal wires
|
wire [V-1 : 0] ivc_masked [P-1 : 0];//output of mask and
|
wire [V-1 : 0] ivc_masked [P-1 : 0];//output of mask and
|
wire [V-1 : 0] first_arbiter_grant [P-1 : 0];//output of first arbiter
|
wire [V-1 : 0] first_arbiter_grant [P-1 : 0];//output of first arbiter
|
wire [P-1 : 0] single_flit_pck_local_grant;
|
wire [P-1 : 0] single_flit_pck_local_grant;
|
wire [P_1-1 : 0] dest_port [P-1 : 0];//output of multiplexer
|
wire [P_1-1 : 0] dest_port [P-1 : 0];//output of multiplexer
|
wire [P_1-1 : 0] second_arbiter_request [P-1 : 0];
|
wire [P_1-1 : 0] second_arbiter_request [P-1 : 0];
|
wire [P_1-1 : 0] second_arbiter_grant [P-1 : 0];
|
wire [P_1-1 : 0] second_arbiter_grant [P-1 : 0];
|
wire [P_1-1 : 0] second_arbiter_weight_consumed [P-1 : 0];
|
wire [P_1-1 : 0] second_arbiter_weight_consumed [P-1 : 0];
|
wire [V-1 : 0] vc_weight_is_consumed [P-1 : 0];
|
wire [V-1 : 0] vc_weight_is_consumed [P-1 : 0];
|
wire [P-1 :0] winner_weight_consumed;
|
wire [P-1 :0] winner_weight_consumed;
|
|
|
genvar i,j;
|
genvar i,j;
|
generate
|
generate
|
|
|
for(i=0;i< P;i=i+1) begin :port_loop
|
for(i=0;i< P;i=i+1) begin :port_loop
|
//assign in/out to the port based wires
|
//assign in/out to the port based wires
|
//output
|
//output
|
assign ivc_granted_all [(i+1)*V-1 : i*V] = ivc_granted [i];
|
assign ivc_granted_all [(i+1)*V-1 : i*V] = ivc_granted [i];
|
assign granted_dest_port_all [(i+1)*P_1-1 : i*P_1] = granted_dest_port[i];
|
assign granted_dest_port_all [(i+1)*P_1-1 : i*P_1] = granted_dest_port[i];
|
assign first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V]= first_arbiter_grant[i];
|
assign first_arbiter_granted_ivc_all[(i+1)*V-1 : i*V]= first_arbiter_grant[i];
|
//input
|
//input
|
assign ivc_masked[i] = ivc_request_masked_all [(i+1)*V-1 : i*V];
|
assign ivc_masked[i] = ivc_request_masked_all [(i+1)*V-1 : i*V];
|
|
|
assign dest_port_ivc[i] = dest_port_all [(i+1)*VP_1-1 : i*VP_1];
|
assign dest_port_ivc[i] = dest_port_all [(i+1)*VP_1-1 : i*VP_1];
|
assign vc_weight_is_consumed[i] = vc_weight_is_consumed_all [(i+1)*V-1 : i*V];
|
assign vc_weight_is_consumed[i] = vc_weight_is_consumed_all [(i+1)*V-1 : i*V];
|
|
|
//first level arbiter
|
//first level arbiter
|
swa_input_port_arbiter #(
|
swa_input_port_arbiter #(
|
.ARBITER_WIDTH(V),
|
.ARBITER_WIDTH(V),
|
.EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
|
.EXT_P_EN(FIRST_ARBITER_EXT_P_EN),
|
.ARBITER_TYPE(SWA_ARBITER_TYPE)
|
.ARBITER_TYPE(SWA_ARBITER_TYPE)
|
)
|
)
|
input_arbiter
|
input_arbiter
|
(
|
(
|
.ext_pr_en_i(any_ivc_granted_all[i]),
|
.ext_pr_en_i(any_ivc_granted_all[i]),
|
.request(ivc_masked [i]),
|
.request(ivc_masked [i]),
|
.grant(first_arbiter_grant[i]),
|
.grant(first_arbiter_grant[i]),
|
.any_grant( ),
|
.any_grant( ),
|
.clk(clk),
|
.clk(clk),
|
.reset(reset),
|
.reset(reset),
|
.vc_weight_is_consumed(vc_weight_is_consumed[i]),
|
.vc_weight_is_consumed(vc_weight_is_consumed[i]),
|
.winner_weight_consumed(winner_weight_consumed[i])
|
.winner_weight_consumed(winner_weight_consumed[i])
|
);
|
);
|
|
|
|
|
|
|
//destination port multiplexer
|
//destination port multiplexer
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W (P_1),
|
.W (P_1),
|
.N (V)
|
.N (V)
|
)
|
)
|
multiplexer
|
multiplexer
|
(
|
(
|
.in (dest_port_ivc [i]),
|
.in (dest_port_ivc [i]),
|
.out (dest_port [i]),
|
.out (dest_port [i]),
|
.sel(first_arbiter_grant[i])
|
.sel(first_arbiter_grant[i])
|
|
|
);
|
);
|
if(MIN_PCK_SIZE == 1) begin :single_flit_supported
|
if(MIN_PCK_SIZE == 1) begin :single_flit_supported
|
//single_flit req multiplexer
|
//single_flit req multiplexer
|
assign pck_is_single_flit[i] = pck_is_single_flit_all [(i+1)*V-1 : i*V];
|
assign pck_is_single_flit[i] = pck_is_single_flit_all [(i+1)*V-1 : i*V];
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W (1),
|
.W (1),
|
.N (V)
|
.N (V)
|
)
|
)
|
multiplexer2
|
multiplexer2
|
(
|
(
|
.in (pck_is_single_flit [i]),
|
.in (pck_is_single_flit [i]),
|
.out (single_flit_pck_local_grant[i]),
|
.out (single_flit_pck_local_grant[i]),
|
.sel (first_arbiter_grant[i])
|
.sel (first_arbiter_grant[i])
|
|
|
);
|
);
|
|
|
assign single_flit_granted_dst[i] = (single_flit_pck_local_grant[i])? granted_dest_port[i] : {P_1{1'b0}};
|
assign single_flit_granted_dst[i] = (single_flit_pck_local_grant[i])? granted_dest_port[i] : {P_1{1'b0}};
|
|
|
if (SELF_LOOP_EN == "NO") begin :nslp
|
if (SELF_LOOP_EN == "NO") begin :nslp
|
add_sw_loc_one_hot #(
|
add_sw_loc_one_hot #(
|
.P(P),
|
.P(P),
|
.SW_LOC(i)
|
.SW_LOC(i)
|
)
|
)
|
add_sw_loc
|
add_sw_loc
|
(
|
(
|
.destport_in(single_flit_granted_dst[i]),
|
.destport_in(single_flit_granted_dst[i]),
|
.destport_out(single_flit_granted_dst_all[(i+1)*P-1 : i*P])
|
.destport_out(single_flit_granted_dst_all[(i+1)*P-1 : i*P])
|
);
|
);
|
end else begin :slp
|
end else begin :slp
|
assign single_flit_granted_dst_all[(i+1)*P-1 : i*P] = single_flit_granted_dst[i];
|
assign single_flit_granted_dst_all[(i+1)*P-1 : i*P] = single_flit_granted_dst[i];
|
end
|
end
|
|
|
end else begin : single_flit_notsupported
|
end else begin : single_flit_notsupported
|
assign single_flit_pck_local_grant[i] = 1'bx;
|
assign single_flit_pck_local_grant[i] = 1'bx;
|
assign single_flit_granted_dst[i] = {P_1{1'bx}};
|
assign single_flit_granted_dst[i] = {P_1{1'bx}};
|
assign single_flit_granted_dst_all[(i+1)*P-1 : i*P]={P{1'b0}};
|
assign single_flit_granted_dst_all[(i+1)*P-1 : i*P]={P{1'b0}};
|
end
|
end
|
//second arbiter input/output generate
|
//second arbiter input/output generate
|
|
|
|
|
for(j=0;j
|
for(j=0;j
|
if (SELF_LOOP_EN == "NO") begin :nslp
|
if (SELF_LOOP_EN == "NO") begin :nslp
|
if(i
|
if(i
|
assign second_arbiter_request[i][j-1] = dest_port[j][i];
|
assign second_arbiter_request[i][j-1] = dest_port[j][i];
|
//assign second_arbiter_weight_consumed[i][j-1] =winner_weight_consumed[j] ;
|
//assign second_arbiter_weight_consumed[i][j-1] =winner_weight_consumed[j] ;
|
assign second_arbiter_weight_consumed[i][j-1] =iport_weight_is_consumed_all[j] ;
|
assign second_arbiter_weight_consumed[i][j-1] =iport_weight_is_consumed_all[j] ;
|
assign granted_dest_port[j][i] = second_arbiter_grant [i][j-1] ;
|
assign granted_dest_port[j][i] = second_arbiter_grant [i][j-1] ;
|
|
|
end else if(i>j)begin: hh
|
end else if(i>j)begin: hh
|
assign second_arbiter_request[i][j] = dest_port [j][i-1] ;
|
assign second_arbiter_request[i][j] = dest_port [j][i-1] ;
|
//assign second_arbiter_weight_consumed[i][j] =winner_weight_consumed[j];
|
//assign second_arbiter_weight_consumed[i][j] =winner_weight_consumed[j];
|
assign second_arbiter_weight_consumed[i][j] =iport_weight_is_consumed_all[j];
|
assign second_arbiter_weight_consumed[i][j] =iport_weight_is_consumed_all[j];
|
assign granted_dest_port[j][i-1] = second_arbiter_grant [i][j] ;
|
assign granted_dest_port[j][i-1] = second_arbiter_grant [i][j] ;
|
end
|
end
|
//if(i==j) wires are left disconnected
|
//if(i==j) wires are left disconnected
|
end else begin :slp
|
end else begin :slp
|
assign second_arbiter_request[i][j] = dest_port[j][i];
|
assign second_arbiter_request[i][j] = dest_port[j][i];
|
assign second_arbiter_weight_consumed[i][j] =iport_weight_is_consumed_all[j] ;
|
assign second_arbiter_weight_consumed[i][j] =iport_weight_is_consumed_all[j] ;
|
assign granted_dest_port[j][i] = second_arbiter_grant [i][j] ;
|
assign granted_dest_port[j][i] = second_arbiter_grant [i][j] ;
|
end
|
end
|
end
|
end
|
|
|
|
|
//second level arbiter
|
//second level arbiter
|
swa_output_port_arbiter #(
|
swa_output_port_arbiter #(
|
.ARBITER_WIDTH(P_1),
|
.ARBITER_WIDTH(P_1),
|
.ARBITER_TYPE(SWA_ARBITER_TYPE) // RRA, WRRA
|
.ARBITER_TYPE(SWA_ARBITER_TYPE) // RRA, WRRA
|
)
|
)
|
output_arbiter
|
output_arbiter
|
(
|
(
|
.weight_consumed(second_arbiter_weight_consumed[i]), // only used for WRRA
|
.weight_consumed(second_arbiter_weight_consumed[i]), // only used for WRRA
|
.clk(clk),
|
.clk(clk),
|
.reset(reset),
|
.reset(reset),
|
.request(second_arbiter_request [i]),
|
.request(second_arbiter_request [i]),
|
.grant(second_arbiter_grant [i]),
|
.grant(second_arbiter_grant [i]),
|
.any_grant(any_ovc_granted_all [i])
|
.any_grant(any_ovc_granted_all [i])
|
);
|
);
|
|
|
|
|
//any ivc
|
//any ivc
|
assign any_ivc_granted_all[i] = | granted_dest_port[i];
|
assign any_ivc_granted_all[i] = | granted_dest_port[i];
|
assign ivc_granted[i] = (any_ivc_granted_all[i]) ? first_arbiter_grant[i] : {V{1'b0}};
|
assign ivc_granted[i] = (any_ivc_granted_all[i]) ? first_arbiter_grant[i] : {V{1'b0}};
|
|
|
|
|
end//for
|
end//for
|
endgenerate
|
endgenerate
|
|
|
|
|
custom_or #(
|
custom_or #(
|
.IN_NUM(P),
|
.IN_NUM(P),
|
.OUT_WIDTH(P)
|
.OUT_WIDTH(P)
|
)
|
)
|
or_dst
|
or_dst
|
(
|
(
|
.or_in(single_flit_granted_dst_all),
|
.or_in(single_flit_granted_dst_all),
|
.or_out(granted_dst_is_from_a_single_flit_pck)
|
.or_out(granted_dst_is_from_a_single_flit_pck)
|
);
|
);
|
|
|
endmodule
|
endmodule
|
|
|
|
|
|
|
/*******************
|
/*******************
|
* swa_input_port_arbiter
|
* swa_input_port_arbiter
|
*
|
*
|
********************/
|
********************/
|
|
|
|
|
module swa_input_port_arbiter #(
|
module swa_input_port_arbiter #(
|
parameter ARBITER_WIDTH =4,
|
parameter ARBITER_WIDTH =4,
|
parameter EXT_P_EN = 1,
|
parameter EXT_P_EN = 1,
|
parameter ARBITER_TYPE = "WRRA"// RRA, WRRA
|
parameter ARBITER_TYPE = "WRRA"// RRA, WRRA
|
|
|
)(
|
)(
|
ext_pr_en_i, // it is used only if the EXT_P_EN is 1
|
ext_pr_en_i, // it is used only if the EXT_P_EN is 1
|
clk,
|
clk,
|
reset,
|
reset,
|
request,
|
request,
|
grant,
|
grant,
|
any_grant,
|
any_grant,
|
vc_weight_is_consumed, // only for WRRA
|
vc_weight_is_consumed, // only for WRRA
|
winner_weight_consumed // only for WRRA
|
winner_weight_consumed // only for WRRA
|
);
|
);
|
|
|
|
|
|
|
|
|
|
|
input ext_pr_en_i;
|
input ext_pr_en_i;
|
input [ARBITER_WIDTH-1 : 0] request;
|
input [ARBITER_WIDTH-1 : 0] request;
|
output[ARBITER_WIDTH-1 : 0] grant;
|
output[ARBITER_WIDTH-1 : 0] grant;
|
output any_grant;
|
output any_grant;
|
input clk;
|
input clk;
|
input reset;
|
input reset;
|
input [ARBITER_WIDTH-1 : 0] vc_weight_is_consumed;
|
input [ARBITER_WIDTH-1 : 0] vc_weight_is_consumed;
|
output winner_weight_consumed;
|
output winner_weight_consumed;
|
|
|
|
|
generate
|
generate
|
/* verilator lint_off WIDTH */
|
/* verilator lint_off WIDTH */
|
if(ARBITER_TYPE != "RRA") begin : wrra_m
|
if(ARBITER_TYPE != "RRA") begin : wrra_m
|
/* verilator lint_on WIDTH */
|
/* verilator lint_on WIDTH */
|
|
|
// one hot mux
|
// one hot mux
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W(1),
|
.W(1),
|
.N(ARBITER_WIDTH)
|
.N(ARBITER_WIDTH)
|
)
|
)
|
mux
|
mux
|
(
|
(
|
.in(vc_weight_is_consumed),
|
.in(vc_weight_is_consumed),
|
.out(winner_weight_consumed),
|
.out(winner_weight_consumed),
|
.sel(grant)
|
.sel(grant)
|
);
|
);
|
|
|
wire priority_en = (EXT_P_EN == 1) ? ext_pr_en_i & winner_weight_consumed : winner_weight_consumed;
|
wire priority_en = (EXT_P_EN == 1) ? ext_pr_en_i & winner_weight_consumed : winner_weight_consumed;
|
|
|
//round robin arbiter with external priority
|
//round robin arbiter with external priority
|
|
|
arbiter_priority_en #(
|
arbiter_priority_en #(
|
.ARBITER_WIDTH(ARBITER_WIDTH)
|
.ARBITER_WIDTH(ARBITER_WIDTH)
|
)
|
)
|
rra
|
rra
|
(
|
(
|
.request(request),
|
.request(request),
|
.grant(grant),
|
.grant(grant),
|
.any_grant(any_grant),
|
.any_grant(any_grant),
|
.clk(clk),
|
.clk(clk),
|
.reset(reset),
|
.reset(reset),
|
.priority_en(priority_en)
|
.priority_en(priority_en)
|
);
|
);
|
|
|
end else begin : rra_m //RRA
|
end else begin : rra_m //RRA
|
assign winner_weight_consumed = 1'bx;
|
assign winner_weight_consumed = 1'bx;
|
if(EXT_P_EN==1) begin : arbiter_ext_en
|
if(EXT_P_EN==1) begin : arbiter_ext_en
|
|
|
arbiter_priority_en #(
|
arbiter_priority_en #(
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
)
|
)
|
arb
|
arb
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (request),
|
.request (request),
|
.grant (grant),
|
.grant (grant),
|
.any_grant (any_grant ),
|
.any_grant (any_grant ),
|
.priority_en (ext_pr_en_i)
|
.priority_en (ext_pr_en_i)
|
);
|
);
|
|
|
end else begin: first_lvl_arbiter_internal_en
|
end else begin: first_lvl_arbiter_internal_en
|
|
|
arbiter #(
|
arbiter #(
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
)
|
)
|
arb
|
arb
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (request),
|
.request (request),
|
.grant (grant),
|
.grant (grant),
|
.any_grant (any_grant )
|
.any_grant (any_grant )
|
);
|
);
|
|
|
end//else
|
end//else
|
|
|
end
|
end
|
endgenerate
|
endgenerate
|
|
|
endmodule
|
endmodule
|
|
|
|
|
|
|
|
|
/*******************
|
/*******************
|
* swa_output_port_arbiter
|
* swa_output_port_arbiter
|
*
|
*
|
********************/
|
********************/
|
|
|
|
|
module swa_output_port_arbiter #(
|
module swa_output_port_arbiter #(
|
parameter ARBITER_WIDTH =4,
|
parameter ARBITER_WIDTH =4,
|
parameter ARBITER_TYPE = "WRRA" // RRA, WRRA
|
parameter ARBITER_TYPE = "WRRA" // RRA, WRRA
|
|
|
|
|
)(
|
)(
|
weight_consumed, // only used for WRRA
|
weight_consumed, // only used for WRRA
|
clk,
|
clk,
|
reset,
|
reset,
|
request,
|
request,
|
grant,
|
grant,
|
any_grant
|
any_grant
|
);
|
);
|
|
|
|
|
|
|
input [ARBITER_WIDTH-1 : 0] request;
|
input [ARBITER_WIDTH-1 : 0] request;
|
output [ARBITER_WIDTH-1 : 0] grant;
|
output [ARBITER_WIDTH-1 : 0] grant;
|
output any_grant;
|
output any_grant;
|
input clk;
|
input clk;
|
input reset;
|
input reset;
|
input [ARBITER_WIDTH-1 : 0] weight_consumed;
|
input [ARBITER_WIDTH-1 : 0] weight_consumed;
|
|
|
|
|
|
|
generate
|
generate
|
/* verilator lint_off WIDTH */
|
/* verilator lint_off WIDTH */
|
if(ARBITER_TYPE == "WRRA") begin : wrra_mine
|
if(ARBITER_TYPE == "WRRA") begin : wrra_mine
|
/* verilator lint_on WIDTH */
|
/* verilator lint_on WIDTH */
|
// second level wrra priority is only changed if the granted request weight is consumed
|
// second level wrra priority is only changed if the granted request weight is consumed
|
wire pr_en;
|
wire pr_en;
|
|
|
onehot_mux_1D #(
|
onehot_mux_1D #(
|
.W(1),
|
.W(1),
|
.N(ARBITER_WIDTH)
|
.N(ARBITER_WIDTH)
|
)
|
)
|
multiplexer
|
multiplexer
|
(
|
(
|
.in(weight_consumed),
|
.in(weight_consumed),
|
.out(pr_en),
|
.out(pr_en),
|
.sel(grant)
|
.sel(grant)
|
|
|
);
|
);
|
|
|
|
|
arbiter_priority_en #(
|
arbiter_priority_en #(
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
.ARBITER_WIDTH (ARBITER_WIDTH)
|
)
|
)
|
arb
|
arb
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (request),
|
.request (request),
|
.grant (grant),
|
.grant (grant),
|
.any_grant (any_grant ),
|
.any_grant (any_grant ),
|
.priority_en (pr_en)
|
.priority_en (pr_en)
|
);
|
);
|
|
|
|
|
/* verilator lint_off WIDTH */
|
/* verilator lint_off WIDTH */
|
end else if(ARBITER_TYPE == "WRRA_CLASSIC") begin : wrra_classic
|
end else if(ARBITER_TYPE == "WRRA_CLASSIC") begin : wrra_classic
|
/* verilator lint_on WIDTH */
|
/* verilator lint_on WIDTH */
|
// use classic WRRA. only for compasrion with propsoed wrra
|
// use classic WRRA. only for compasrion with propsoed wrra
|
|
|
wire [ARBITER_WIDTH-1 : 0] masked_req= request & ~weight_consumed;
|
wire [ARBITER_WIDTH-1 : 0] masked_req= request & ~weight_consumed;
|
wire sel = |masked_req;
|
wire sel = |masked_req;
|
wire [ARBITER_WIDTH-1 : 0] mux_req = (sel==1'b1)? masked_req : request;
|
wire [ARBITER_WIDTH-1 : 0] mux_req = (sel==1'b1)? masked_req : request;
|
|
|
arbiter #(
|
arbiter #(
|
.ARBITER_WIDTH (ARBITER_WIDTH )
|
.ARBITER_WIDTH (ARBITER_WIDTH )
|
)
|
)
|
arb
|
arb
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (mux_req),
|
.request (mux_req),
|
.grant (grant),
|
.grant (grant),
|
.any_grant (any_grant )
|
.any_grant (any_grant )
|
);
|
);
|
|
|
|
|
|
|
end else begin : rra_m
|
end else begin : rra_m
|
|
|
arbiter #(
|
arbiter #(
|
.ARBITER_WIDTH (ARBITER_WIDTH )
|
.ARBITER_WIDTH (ARBITER_WIDTH )
|
)
|
)
|
arb
|
arb
|
(
|
(
|
.clk (clk),
|
.clk (clk),
|
.reset (reset),
|
.reset (reset),
|
.request (request),
|
.request (request),
|
.grant (grant),
|
.grant (grant),
|
.any_grant (any_grant )
|
.any_grant (any_grant )
|
);
|
);
|
|
|
end
|
end
|
endgenerate
|
endgenerate
|
endmodule
|
endmodule
|
|
|
|
|
