From 46b01cbf6e375eee7291efe7a4842a928bde4440 Mon Sep 17 00:00:00 2001 From: "Pavel V. Shatov (Meister)" Date: Tue, 27 Jun 2017 13:42:16 +0300 Subject: Added generic processing elements. --- src/rtl/pe/modexpa7_pe_add.v | 63 +++++++++++++++++++++++++++++++++ src/rtl/pe/modexpa7_pe_mul.v | 83 ++++++++++++++++++++++++++++++++++++++++++++ src/rtl/pe/modexpa7_pe_sub.v | 63 +++++++++++++++++++++++++++++++++ 3 files changed, 209 insertions(+) create mode 100644 src/rtl/pe/modexpa7_pe_add.v create mode 100644 src/rtl/pe/modexpa7_pe_mul.v create mode 100644 src/rtl/pe/modexpa7_pe_sub.v diff --git a/src/rtl/pe/modexpa7_pe_add.v b/src/rtl/pe/modexpa7_pe_add.v new file mode 100644 index 0000000..9cde591 --- /dev/null +++ b/src/rtl/pe/modexpa7_pe_add.v @@ -0,0 +1,63 @@ +//====================================================================== +// +// modexpa7_pe_add.v +// ----------------------------------------------------------------------------- +// Low-level processing element (adder). +// +// Authors: Pavel Shatov +// +// Copyright (c) 2017, NORDUnet A/S All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// - Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may +// be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +//====================================================================== + +module modexpa7_pe_add + ( + input clk, + input ce, + input [31: 0] a, + input [31: 0] b, + input c_in, + output [31: 0] s, + output c_out + ); + + reg [32: 0] s_reg; + + assign s = s_reg[31: 0]; + assign c_out = s_reg[32]; + + always @(posedge clk) + // + if (ce) s_reg <= {1'b0, a} + {1'b0, b} + {32'd0, c_in}; + +endmodule + +//====================================================================== +// End of file +//====================================================================== diff --git a/src/rtl/pe/modexpa7_pe_mul.v b/src/rtl/pe/modexpa7_pe_mul.v new file mode 100644 index 0000000..e56d152 --- /dev/null +++ b/src/rtl/pe/modexpa7_pe_mul.v @@ -0,0 +1,83 @@ +//====================================================================== +// +// modexpa7_pe_mul.v +// ----------------------------------------------------------------------------- +// Low-level processing element (multiplier). +// +// Authors: Pavel Shatov +// +// Copyright (c) 2017, NORDUnet A/S All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// - Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may +// be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +//====================================================================== + +module modexpa7_pe_mul + ( + input clk, + input [31: 0] a, + input [31: 0] b, + input [31: 0] t, + input [31: 0] c_in, + output [31: 0] p, + output [31: 0] c_out + ); + + reg [31: 0] a_reg1; + reg [31: 0] b_reg1; + reg [31: 0] t_reg1; + reg [31: 0] t_reg2; + reg [31: 0] t_reg3; + reg [31: 0] c_reg1; + reg [31: 0] c_reg2; + + reg [63: 0] ab_reg; + reg [63: 0] abc_reg; + reg [63: 0] abct_reg; + + assign p = abct_reg[31: 0]; + assign c_out = abct_reg[63:32]; + + always @(posedge clk) begin + a_reg1 <= a; + b_reg1 <= b; + c_reg1 <= c_in; + c_reg2 <= c_reg1; + t_reg1 <= t; + t_reg2 <= t_reg1; + t_reg3 <= t_reg2; + + ab_reg <= {{32{1'b0}}, a_reg1} * {{32{1'b0}}, b_reg1}; + abc_reg <= ab_reg + {{32{1'b0}}, c_reg2}; + abct_reg <= abc_reg + {{32{1'b0}}, t_reg3}; + end + +endmodule + +//====================================================================== +// End of file +//====================================================================== diff --git a/src/rtl/pe/modexpa7_pe_sub.v b/src/rtl/pe/modexpa7_pe_sub.v new file mode 100644 index 0000000..85c5f65 --- /dev/null +++ b/src/rtl/pe/modexpa7_pe_sub.v @@ -0,0 +1,63 @@ +//====================================================================== +// +// modexpa7_pe_sub.v +// ----------------------------------------------------------------------------- +// Low-level processing element (subtractor). +// +// Authors: Pavel Shatov +// +// Copyright (c) 2017, NORDUnet A/S All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// - Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may +// be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +//====================================================================== + +module modexpa7_pe_sub + ( + input clk, + input ce, + input [31: 0] a, + input [31: 0] b, + input b_in, + output [31: 0] d, + output b_out + ); + + reg [32: 0] d_reg; + + assign d = d_reg[31: 0]; + assign b_out = d_reg[32]; + + always @(posedge clk) + // + if (ce) d_reg <= {1'b0, a} - {1'b0, b} - {32'd0, b_in}; + +endmodule + +//====================================================================== +// End of file +//====================================================================== -- cgit v1.2.3