// ========== Copyright Header Begin ==========================================
|
// ========== Copyright Header Begin ==========================================
|
//
|
//
|
// OpenSPARC T1 Processor File: lsu_tagdp.v
|
// OpenSPARC T1 Processor File: lsu_tagdp.v
|
// Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
|
// Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
|
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
|
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
|
//
|
//
|
// The above named program is free software; you can redistribute it and/or
|
// The above named program is free software; you can redistribute it and/or
|
// modify it under the terms of the GNU General Public
|
// modify it under the terms of the GNU General Public
|
// License version 2 as published by the Free Software Foundation.
|
// License version 2 as published by the Free Software Foundation.
|
//
|
//
|
// The above named program is distributed in the hope that it will be
|
// The above named program is distributed in the hope that it will be
|
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
|
// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
// General Public License for more details.
|
// General Public License for more details.
|
//
|
//
|
// You should have received a copy of the GNU General Public
|
// You should have received a copy of the GNU General Public
|
// License along with this work; if not, write to the Free Software
|
// License along with this work; if not, write to the Free Software
|
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
|
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
|
//
|
//
|
// ========== Copyright Header End ============================================
|
// ========== Copyright Header End ============================================
|
|
`ifdef SIMPLY_RISC_TWEAKS
|
|
`define SIMPLY_RISC_SCANIN .si(0)
|
|
`else
|
|
`define SIMPLY_RISC_SCANIN .si()
|
|
`endif
|
module lsu_tagdp( /*AUTOARG*/
|
module lsu_tagdp( /*AUTOARG*/
|
// Outputs
|
// Outputs
|
so, lsu_misc_rdata_w2, lsu_rd_dtag_parity_g,
|
so, lsu_misc_rdata_w2, lsu_rd_dtag_parity_g,
|
// Inputs
|
// Inputs
|
rclk, si, se, lsu_va_wtchpt_addr, lsu_va_wtchpt_sel_g, dva_vld_m,
|
rclk, si, se, lsu_va_wtchpt_addr, lsu_va_wtchpt_sel_g, dva_vld_m,
|
dtag_rdata_w0_m, dtag_rdata_w1_m, dtag_rdata_w2_m,
|
dtag_rdata_w0_m, dtag_rdata_w1_m, dtag_rdata_w2_m,
|
dtag_rdata_w3_m, lsu_dtag_rsel_m, lsu_local_ldxa_data_g,
|
dtag_rdata_w3_m, lsu_dtag_rsel_m, lsu_local_ldxa_data_g,
|
lsu_local_ldxa_sel_g, lsu_tlb_rd_data, lsu_local_ldxa_tlbrd_sel_g,
|
lsu_local_ldxa_sel_g, lsu_tlb_rd_data, lsu_local_ldxa_tlbrd_sel_g,
|
lsu_local_diagnstc_tagrd_sel_g
|
lsu_local_diagnstc_tagrd_sel_g
|
);
|
);
|
|
|
input rclk;
|
input rclk;
|
input si;
|
input si;
|
input se;
|
input se;
|
output so;
|
output so;
|
|
|
input [47:3] lsu_va_wtchpt_addr ;
|
input [47:3] lsu_va_wtchpt_addr ;
|
input lsu_va_wtchpt_sel_g;
|
input lsu_va_wtchpt_sel_g;
|
|
|
input [3:0] dva_vld_m; // valid array read
|
input [3:0] dva_vld_m; // valid array read
|
input [29:0] dtag_rdata_w0_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w0_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w1_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w1_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w2_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w2_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w3_m; // 29b tag; 1b parity from dtag
|
input [29:0] dtag_rdata_w3_m; // 29b tag; 1b parity from dtag
|
input [3:0] lsu_dtag_rsel_m; // select one of the above tag from ??
|
input [3:0] lsu_dtag_rsel_m; // select one of the above tag from ??
|
|
|
input [47:0] lsu_local_ldxa_data_g; // from dctl
|
input [47:0] lsu_local_ldxa_data_g; // from dctl
|
input lsu_local_ldxa_sel_g; //used to mux ldxa data with 1/4 tags. from ??
|
input lsu_local_ldxa_sel_g; //used to mux ldxa data with 1/4 tags. from ??
|
|
|
input [63:0] lsu_tlb_rd_data; // from tlbdp - used in local ldxa mux
|
input [63:0] lsu_tlb_rd_data; // from tlbdp - used in local ldxa mux
|
input lsu_local_ldxa_tlbrd_sel_g;
|
input lsu_local_ldxa_tlbrd_sel_g;
|
input lsu_local_diagnstc_tagrd_sel_g;
|
input lsu_local_diagnstc_tagrd_sel_g;
|
|
|
|
|
output [63:0] lsu_misc_rdata_w2; // to qdp1
|
output [63:0] lsu_misc_rdata_w2; // to qdp1
|
output [3:0] lsu_rd_dtag_parity_g; // parity check on 4 tags. to dctl
|
output [3:0] lsu_rd_dtag_parity_g; // parity check on 4 tags. to dctl
|
|
|
|
|
wire dtag_rdata_w0_parity_g,
|
wire dtag_rdata_w0_parity_g,
|
dtag_rdata_w1_parity_g,
|
dtag_rdata_w1_parity_g,
|
dtag_rdata_w2_parity_g,
|
dtag_rdata_w2_parity_g,
|
dtag_rdata_w3_parity_g;
|
dtag_rdata_w3_parity_g;
|
|
|
wire [29:0] dtag_rdata_sel_m,
|
wire [29:0] dtag_rdata_sel_m,
|
dtag_rdata_sel_g;
|
dtag_rdata_sel_g;
|
|
|
|
|
wire [3:0] dtag_rdata_w0_8b_parity_m,
|
wire [3:0] dtag_rdata_w0_8b_parity_m,
|
dtag_rdata_w1_8b_parity_m,
|
dtag_rdata_w1_8b_parity_m,
|
dtag_rdata_w2_8b_parity_m,
|
dtag_rdata_w2_8b_parity_m,
|
dtag_rdata_w3_8b_parity_m;
|
dtag_rdata_w3_8b_parity_m;
|
|
|
wire [3:0] dtag_rdata_w0_8b_parity_g,
|
wire [3:0] dtag_rdata_w0_8b_parity_g,
|
dtag_rdata_w1_8b_parity_g,
|
dtag_rdata_w1_8b_parity_g,
|
dtag_rdata_w2_8b_parity_g,
|
dtag_rdata_w2_8b_parity_g,
|
dtag_rdata_w3_8b_parity_g;
|
dtag_rdata_w3_8b_parity_g;
|
|
|
wire [63:0] lsu_misc_rdata_g;
|
wire [63:0] lsu_misc_rdata_g;
|
|
|
wire dtag_vld_sel_m, dtag_vld_sel_g;
|
wire dtag_vld_sel_m, dtag_vld_sel_g;
|
|
|
wire clk;
|
wire clk;
|
assign clk = rclk;
|
assign clk = rclk;
|
|
|
//=================================================================================================
|
//=================================================================================================
|
// Select Tag Read data / ldxa data
|
// Select Tag Read data / ldxa data
|
//=================================================================================================
|
//=================================================================================================
|
|
|
// select 1 out of 4 tags
|
// select 1 out of 4 tags
|
mux4ds #(31) dtag_rdata_sel (
|
mux4ds #(31) dtag_rdata_sel (
|
.in0 ({dtag_rdata_w0_m[29:0],dva_vld_m[0]}),
|
.in0 ({dtag_rdata_w0_m[29:0],dva_vld_m[0]}),
|
.in1 ({dtag_rdata_w1_m[29:0],dva_vld_m[1]}),
|
.in1 ({dtag_rdata_w1_m[29:0],dva_vld_m[1]}),
|
.in2 ({dtag_rdata_w2_m[29:0],dva_vld_m[2]}),
|
.in2 ({dtag_rdata_w2_m[29:0],dva_vld_m[2]}),
|
.in3 ({dtag_rdata_w3_m[29:0],dva_vld_m[3]}),
|
.in3 ({dtag_rdata_w3_m[29:0],dva_vld_m[3]}),
|
.sel0 (lsu_dtag_rsel_m[0]),
|
.sel0 (lsu_dtag_rsel_m[0]),
|
.sel1 (lsu_dtag_rsel_m[1]),
|
.sel1 (lsu_dtag_rsel_m[1]),
|
.sel2 (lsu_dtag_rsel_m[2]),
|
.sel2 (lsu_dtag_rsel_m[2]),
|
.sel3 (lsu_dtag_rsel_m[3]),
|
.sel3 (lsu_dtag_rsel_m[3]),
|
.dout ({dtag_rdata_sel_m[29:0],dtag_vld_sel_m})
|
.dout ({dtag_rdata_sel_m[29:0],dtag_vld_sel_m})
|
);
|
);
|
|
|
dff #(31) dtag_rdata_sel_g_ff (
|
dff_s #(31) dtag_rdata_sel_g_ff (
|
.din ({dtag_rdata_sel_m[29:0],dtag_vld_sel_m}),
|
.din ({dtag_rdata_sel_m[29:0],dtag_vld_sel_m}),
|
.q ({dtag_rdata_sel_g[29:0],dtag_vld_sel_g}),
|
.q ({dtag_rdata_sel_g[29:0],dtag_vld_sel_g}),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
mux4ds #(64) lsu_misc_rdata_sel (
|
mux4ds #(64) lsu_misc_rdata_sel (
|
.in0 ({16'h0,lsu_local_ldxa_data_g[47:0]}),
|
.in0 ({16'h0,lsu_local_ldxa_data_g[47:0]}),
|
.in1 (lsu_tlb_rd_data[63:0]),
|
.in1 (lsu_tlb_rd_data[63:0]),
|
.in2 ({16'h0,lsu_va_wtchpt_addr[47:3],3'b000}),
|
.in2 ({16'h0,lsu_va_wtchpt_addr[47:3],3'b000}),
|
.in3 ({33'h0,dtag_rdata_sel_g[29:0],dtag_vld_sel_g}),
|
.in3 ({33'h0,dtag_rdata_sel_g[29:0],dtag_vld_sel_g}),
|
.sel0 (lsu_local_ldxa_sel_g),
|
.sel0 (lsu_local_ldxa_sel_g),
|
.sel1 (lsu_local_ldxa_tlbrd_sel_g),
|
.sel1 (lsu_local_ldxa_tlbrd_sel_g),
|
.sel2 (lsu_va_wtchpt_sel_g),
|
.sel2 (lsu_va_wtchpt_sel_g),
|
.sel3 (lsu_local_diagnstc_tagrd_sel_g),
|
.sel3 (lsu_local_diagnstc_tagrd_sel_g),
|
.dout (lsu_misc_rdata_g[63:0])
|
.dout (lsu_misc_rdata_g[63:0])
|
);
|
);
|
|
|
dff #(64) lsu_misc_rdata_w2_ff (
|
dff_s #(64) lsu_misc_rdata_w2_ff (
|
.din (lsu_misc_rdata_g[63:0]),
|
.din (lsu_misc_rdata_g[63:0]),
|
.q (lsu_misc_rdata_w2[63:0]),
|
.q (lsu_misc_rdata_w2[63:0]),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
|
|
//=================================================================================================
|
//=================================================================================================
|
// Tag Parity Calculation
|
// Tag Parity Calculation
|
//=================================================================================================
|
//=================================================================================================
|
|
|
// flop tag parity bits
|
// flop tag parity bits
|
dff #(4) dtag_rdata_parity_g_ff (
|
dff_s #(4) dtag_rdata_parity_g_ff (
|
.din ({dtag_rdata_w0_m[29],
|
.din ({dtag_rdata_w0_m[29],
|
dtag_rdata_w1_m[29],
|
dtag_rdata_w1_m[29],
|
dtag_rdata_w2_m[29],
|
dtag_rdata_w2_m[29],
|
dtag_rdata_w3_m[29]}),
|
dtag_rdata_w3_m[29]}),
|
.q ({dtag_rdata_w0_parity_g,
|
.q ({dtag_rdata_w0_parity_g,
|
dtag_rdata_w1_parity_g,
|
dtag_rdata_w1_parity_g,
|
dtag_rdata_w2_parity_g,
|
dtag_rdata_w2_parity_g,
|
dtag_rdata_w3_parity_g}),
|
dtag_rdata_w3_parity_g}),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
|
|
// generate 8bit parity for all ways before g-flop
|
// generate 8bit parity for all ways before g-flop
|
assign dtag_rdata_w0_8b_parity_m[0] = ^dtag_rdata_w0_m[7:0] ;
|
assign dtag_rdata_w0_8b_parity_m[0] = ^dtag_rdata_w0_m[7:0] ;
|
assign dtag_rdata_w0_8b_parity_m[1] = ^dtag_rdata_w0_m[15:8] ;
|
assign dtag_rdata_w0_8b_parity_m[1] = ^dtag_rdata_w0_m[15:8] ;
|
assign dtag_rdata_w0_8b_parity_m[2] = ^dtag_rdata_w0_m[23:16] ;
|
assign dtag_rdata_w0_8b_parity_m[2] = ^dtag_rdata_w0_m[23:16] ;
|
assign dtag_rdata_w0_8b_parity_m[3] = ^dtag_rdata_w0_m[28:24] ;
|
assign dtag_rdata_w0_8b_parity_m[3] = ^dtag_rdata_w0_m[28:24] ;
|
|
|
assign dtag_rdata_w1_8b_parity_m[0] = ^dtag_rdata_w1_m[7:0] ;
|
assign dtag_rdata_w1_8b_parity_m[0] = ^dtag_rdata_w1_m[7:0] ;
|
assign dtag_rdata_w1_8b_parity_m[1] = ^dtag_rdata_w1_m[15:8] ;
|
assign dtag_rdata_w1_8b_parity_m[1] = ^dtag_rdata_w1_m[15:8] ;
|
assign dtag_rdata_w1_8b_parity_m[2] = ^dtag_rdata_w1_m[23:16] ;
|
assign dtag_rdata_w1_8b_parity_m[2] = ^dtag_rdata_w1_m[23:16] ;
|
assign dtag_rdata_w1_8b_parity_m[3] = ^dtag_rdata_w1_m[28:24] ;
|
assign dtag_rdata_w1_8b_parity_m[3] = ^dtag_rdata_w1_m[28:24] ;
|
|
|
assign dtag_rdata_w2_8b_parity_m[0] = ^dtag_rdata_w2_m[7:0] ;
|
assign dtag_rdata_w2_8b_parity_m[0] = ^dtag_rdata_w2_m[7:0] ;
|
assign dtag_rdata_w2_8b_parity_m[1] = ^dtag_rdata_w2_m[15:8] ;
|
assign dtag_rdata_w2_8b_parity_m[1] = ^dtag_rdata_w2_m[15:8] ;
|
assign dtag_rdata_w2_8b_parity_m[2] = ^dtag_rdata_w2_m[23:16] ;
|
assign dtag_rdata_w2_8b_parity_m[2] = ^dtag_rdata_w2_m[23:16] ;
|
assign dtag_rdata_w2_8b_parity_m[3] = ^dtag_rdata_w2_m[28:24] ;
|
assign dtag_rdata_w2_8b_parity_m[3] = ^dtag_rdata_w2_m[28:24] ;
|
|
|
assign dtag_rdata_w3_8b_parity_m[0] = ^dtag_rdata_w3_m[7:0] ;
|
assign dtag_rdata_w3_8b_parity_m[0] = ^dtag_rdata_w3_m[7:0] ;
|
assign dtag_rdata_w3_8b_parity_m[1] = ^dtag_rdata_w3_m[15:8] ;
|
assign dtag_rdata_w3_8b_parity_m[1] = ^dtag_rdata_w3_m[15:8] ;
|
assign dtag_rdata_w3_8b_parity_m[2] = ^dtag_rdata_w3_m[23:16] ;
|
assign dtag_rdata_w3_8b_parity_m[2] = ^dtag_rdata_w3_m[23:16] ;
|
assign dtag_rdata_w3_8b_parity_m[3] = ^dtag_rdata_w3_m[28:24] ;
|
assign dtag_rdata_w3_8b_parity_m[3] = ^dtag_rdata_w3_m[28:24] ;
|
|
|
|
|
// g-flop for 8-bit parity for all 4 ways
|
// g-flop for 8-bit parity for all 4 ways
|
|
|
dff #(4) dtag_rdata_w0_8b_parity_g_ff (
|
dff_s #(4) dtag_rdata_w0_8b_parity_g_ff (
|
.din (dtag_rdata_w0_8b_parity_m[3:0]),
|
.din (dtag_rdata_w0_8b_parity_m[3:0]),
|
.q (dtag_rdata_w0_8b_parity_g[3:0]),
|
.q (dtag_rdata_w0_8b_parity_g[3:0]),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
dff #(4) dtag_rdata_w1_8b_parity_g_ff (
|
dff_s #(4) dtag_rdata_w1_8b_parity_g_ff (
|
.din (dtag_rdata_w1_8b_parity_m[3:0]),
|
.din (dtag_rdata_w1_8b_parity_m[3:0]),
|
.q (dtag_rdata_w1_8b_parity_g[3:0]),
|
.q (dtag_rdata_w1_8b_parity_g[3:0]),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
dff #(4) dtag_rdata_w2_8b_parity_g_ff (
|
dff_s #(4) dtag_rdata_w2_8b_parity_g_ff (
|
.din (dtag_rdata_w2_8b_parity_m[3:0]),
|
.din (dtag_rdata_w2_8b_parity_m[3:0]),
|
.q (dtag_rdata_w2_8b_parity_g[3:0]),
|
.q (dtag_rdata_w2_8b_parity_g[3:0]),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
dff #(4) dtag_rdata_w3_8b_parity_g_ff (
|
dff_s #(4) dtag_rdata_w3_8b_parity_g_ff (
|
.din (dtag_rdata_w3_8b_parity_m[3:0]),
|
.din (dtag_rdata_w3_8b_parity_m[3:0]),
|
.q (dtag_rdata_w3_8b_parity_g[3:0]),
|
.q (dtag_rdata_w3_8b_parity_g[3:0]),
|
.clk (clk),
|
.clk (clk),
|
.se (se), .si (), .so ());
|
.se (se), `SIMPLY_RISC_SCANIN, .so ());
|
|
|
|
|
assign lsu_rd_dtag_parity_g[0] = ^({dtag_rdata_w0_8b_parity_g[3:0],dtag_rdata_w0_parity_g});
|
assign lsu_rd_dtag_parity_g[0] = ^({dtag_rdata_w0_8b_parity_g[3:0],dtag_rdata_w0_parity_g});
|
assign lsu_rd_dtag_parity_g[1] = ^({dtag_rdata_w1_8b_parity_g[3:0],dtag_rdata_w1_parity_g});
|
assign lsu_rd_dtag_parity_g[1] = ^({dtag_rdata_w1_8b_parity_g[3:0],dtag_rdata_w1_parity_g});
|
assign lsu_rd_dtag_parity_g[2] = ^({dtag_rdata_w2_8b_parity_g[3:0],dtag_rdata_w2_parity_g});
|
assign lsu_rd_dtag_parity_g[2] = ^({dtag_rdata_w2_8b_parity_g[3:0],dtag_rdata_w2_parity_g});
|
assign lsu_rd_dtag_parity_g[3] = ^({dtag_rdata_w3_8b_parity_g[3:0],dtag_rdata_w3_parity_g});
|
assign lsu_rd_dtag_parity_g[3] = ^({dtag_rdata_w3_8b_parity_g[3:0],dtag_rdata_w3_parity_g});
|
|
|
endmodule
|
endmodule
|
|
|