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cores-swerv-el2/design/ifu/el2_ifu_ic_mem.sv

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//********************************************************************************
// SPDX-License-Identifier: Apache-2.0
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// Copyright 2020 Western Digital Corporation or its affiliates.
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//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//********************************************************************************
////////////////////////////////////////////////////
// ICACHE DATA & TAG MODULE WRAPPER //
/////////////////////////////////////////////////////
module el2_ifu_ic_mem
import el2_pkg::*;
#(
`include "el2_param.vh"
)
(
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input logic clk, // Clock only while core active. Through one clock header. For flops with second clock header built in. Connected to ACTIVE_L2CLK.
input logic active_clk, // Clock only while core active. Through two clock headers. For flops without second clock header built in.
input logic rst_l, // reset, active low
input logic clk_override, // Override non-functional clock gating
input logic dec_tlu_core_ecc_disable, // Disable ECC checking
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input logic [31:1] ic_rw_addr,
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_wr_en , // Which way to write
input logic ic_rd_en , // Read enable
input logic [pt.ICACHE_INDEX_HI:3] ic_debug_addr, // Read/Write addresss to the Icache.
input logic ic_debug_rd_en, // Icache debug rd
input logic ic_debug_wr_en, // Icache debug wr
input logic ic_debug_tag_array, // Debug tag array
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_way, // Debug way. Rd or Wr.
input logic [63:0] ic_premux_data, // Premux data to be muxed with each way of the Icache.
input logic ic_sel_premux_data, // Select the pre_muxed data
input logic [pt.ICACHE_BANKS_WAY-1:0][70:0] ic_wr_data, // Data to fill to the Icache. With ECC
output logic [63:0] ic_rd_data , // Data read from Icache. 2x64bits + parity bits. F2 stage. With ECC
output logic [70:0] ic_debug_rd_data , // Data read from Icache. 2x64bits + parity bits. F2 stage. With ECC
output logic [25:0] ictag_debug_rd_data,// Debug icache tag.
input logic [70:0] ic_debug_wr_data, // Debug wr cache.
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output logic [pt.ICACHE_BANKS_WAY-1:0] ic_eccerr, // ecc error per bank
output logic [pt.ICACHE_BANKS_WAY-1:0] ic_parerr, // ecc error per bank
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_valid, // Valid from the I$ tag valid outside (in flops).
input el2_ic_data_ext_in_pkt_t [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_data_ext_in_pkt, // this is being driven by the top level for soc testing/etc
input el2_ic_tag_ext_in_pkt_t [pt.ICACHE_NUM_WAYS-1:0] ic_tag_ext_in_pkt, // this is being driven by the top level for soc testing/etc
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output logic [pt.ICACHE_NUM_WAYS-1:0] ic_rd_hit, // ic_rd_hit[3:0]
output logic ic_tag_perr, // Tag Parity error
input logic scan_mode // Flop scan mode control
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) ;
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EL2_IC_TAG #(.pt(pt)) ic_tag_inst
(
.*,
.ic_wr_en (ic_wr_en[pt.ICACHE_NUM_WAYS-1:0]),
.ic_debug_addr(ic_debug_addr[pt.ICACHE_INDEX_HI:3]),
.ic_rw_addr (ic_rw_addr[31:3])
) ;
EL2_IC_DATA #(.pt(pt)) ic_data_inst
(
.*,
.ic_wr_en (ic_wr_en[pt.ICACHE_NUM_WAYS-1:0]),
.ic_debug_addr(ic_debug_addr[pt.ICACHE_INDEX_HI:3]),
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.ic_rw_addr (ic_rw_addr[31:1])
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) ;
endmodule
/////////////////////////////////////////////////
////// ICACHE DATA MODULE ////////////////////
/////////////////////////////////////////////////
module EL2_IC_DATA
import el2_pkg::*;
#(
`include "el2_param.vh"
)
(
input logic clk,
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input logic active_clk,
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input logic rst_l,
input logic clk_override,
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input logic [31:1] ic_rw_addr,
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input logic [pt.ICACHE_NUM_WAYS-1:0]ic_wr_en,
input logic ic_rd_en, // Read enable
input logic [pt.ICACHE_BANKS_WAY-1:0][70:0] ic_wr_data, // Data to fill to the Icache. With ECC
output logic [63:0] ic_rd_data , // Data read from Icache. 2x64bits + parity bits. F2 stage. With ECC
input logic [70:0] ic_debug_wr_data, // Debug wr cache.
output logic [70:0] ic_debug_rd_data , // Data read from Icache. 2x64bits + parity bits. F2 stage. With ECC
output logic [pt.ICACHE_BANKS_WAY-1:0] ic_parerr,
output logic [pt.ICACHE_BANKS_WAY-1:0] ic_eccerr, // ecc error per bank
input logic [pt.ICACHE_INDEX_HI:3] ic_debug_addr, // Read/Write addresss to the Icache.
input logic ic_debug_rd_en, // Icache debug rd
input logic ic_debug_wr_en, // Icache debug wr
input logic ic_debug_tag_array, // Debug tag array
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_way, // Debug way. Rd or Wr.
input logic [63:0] ic_premux_data, // Premux data to be muxed with each way of the Icache.
input logic ic_sel_premux_data, // Select the pre_muxed data
input logic [pt.ICACHE_NUM_WAYS-1:0]ic_rd_hit,
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input el2_ic_data_ext_in_pkt_t [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_data_ext_in_pkt, // this is being driven by the top level for soc testing/etc
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input logic scan_mode
) ;
logic [pt.ICACHE_TAG_INDEX_LO-1:1] ic_rw_addr_ff;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_WAYS-1:0] ic_b_sb_wren; //bank x ways
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_WAYS-1:0] ic_b_sb_rden; //bank x ways
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logic [pt.ICACHE_BANKS_WAY-1:0] ic_b_rden; //bank
logic [pt.ICACHE_BANKS_WAY-1:0] ic_b_rden_ff; //bank
logic [pt.ICACHE_BANKS_WAY-1:0] ic_debug_sel_sb;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][70:0] wb_dout ; // ways x bank
logic [pt.ICACHE_BANKS_WAY-1:0][70:0] ic_sb_wr_data, ic_bank_wr_data, wb_dout_ecc_bank;
logic [pt.ICACHE_NUM_WAYS-1:0] [141:0] wb_dout_way_pre;
logic [pt.ICACHE_NUM_WAYS-1:0] [63:0] wb_dout_way, wb_dout_way_with_premux;
logic [141:0] wb_dout_ecc;
logic [pt.ICACHE_BANKS_WAY-1:0] bank_check_en;
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logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_WAYS-1:0] ic_bank_way_clken;
logic [pt.ICACHE_BANKS_WAY-1:0] ic_bank_way_clken_final;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_bank_way_clken_final_up;
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logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_rd_way_en; // debug wr_way
logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_rd_way_en_ff; // debug wr_way
logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_wr_way_en; // debug wr_way
logic [pt.ICACHE_INDEX_HI:1] ic_rw_addr_q;
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logic [pt.ICACHE_BANKS_WAY-1:0] [pt.ICACHE_INDEX_HI : pt.ICACHE_DATA_INDEX_LO] ic_rw_addr_bank_q;
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logic [pt.ICACHE_TAG_LO-1 : pt.ICACHE_DATA_INDEX_LO] ic_rw_addr_q_inc;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_rd_hit_q;
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logic [pt.ICACHE_BANKS_WAY-1:0] ic_b_sram_en;
logic [pt.ICACHE_BANKS_WAY-1:0] ic_b_read_en;
logic [pt.ICACHE_BANKS_WAY-1:0] ic_b_write_en;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] wb_index_hold;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] write_bypass_en; //bank
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] write_bypass_en_ff; //bank
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] index_valid; //bank
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_clear_en;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_addr_match;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_addr_match_index_only;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_b_sram_en_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_b_read_en_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] ic_b_write_en_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] wb_index_hold_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] write_bypass_en_up; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] write_bypass_en_ff_up; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] index_valid_up; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_clear_en_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_addr_match_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] ic_b_addr_match_index_only_up;
logic [pt.ICACHE_BANKS_WAY-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] ic_b_rw_addr;
logic [pt.ICACHE_BANKS_WAY-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] ic_b_rw_addr_index_only;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] ic_b_rw_addr_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [31 : pt.ICACHE_DATA_INDEX_LO] ic_b_rw_addr_index_only_up;
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logic ic_rd_en_with_debug;
logic ic_rw_addr_wrap, ic_cacheline_wrap_ff;
logic ic_debug_rd_en_ff;
//-----------------------------------------------------------
// ----------- Logic section starts here --------------------
//-----------------------------------------------------------
assign ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0] = {pt.ICACHE_NUM_WAYS{ic_debug_rd_en & ~ic_debug_tag_array}} & ic_debug_way[pt.ICACHE_NUM_WAYS-1:0] ;
assign ic_debug_wr_way_en[pt.ICACHE_NUM_WAYS-1:0] = {pt.ICACHE_NUM_WAYS{ic_debug_wr_en & ~ic_debug_tag_array}} & ic_debug_way[pt.ICACHE_NUM_WAYS-1:0] ;
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logic end_of_cache_line;
assign end_of_cache_line = (pt.ICACHE_LN_SZ==7'h40) ? (&ic_rw_addr_q[5:4]) : ic_rw_addr_q[4];
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always_comb begin : clkens
ic_bank_way_clken = '0;
for ( int i=0; i<pt.ICACHE_BANKS_WAY; i++) begin: wr_ens
ic_b_sb_wren[i] = ic_wr_en[pt.ICACHE_NUM_WAYS-1:0] |
(ic_debug_wr_way_en[pt.ICACHE_NUM_WAYS-1:0] & {pt.ICACHE_NUM_WAYS{ic_debug_addr[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == i}}) ;
ic_debug_sel_sb[i] = (ic_debug_addr[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == i );
ic_sb_wr_data[i] = (ic_debug_sel_sb[i] & ic_debug_wr_en) ? ic_debug_wr_data : ic_bank_wr_data[i] ;
ic_b_rden[i] = ic_rd_en_with_debug & ( ( ~ic_rw_addr_q[pt.ICACHE_BANK_HI] & (i==0)) |
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(( ic_rw_addr_q[pt.ICACHE_BANK_HI] & ic_rw_addr_q[2:1] == 2'b11) & (i==0) & ~end_of_cache_line) |
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( ic_rw_addr_q[pt.ICACHE_BANK_HI] & (i==1)) |
((~ic_rw_addr_q[pt.ICACHE_BANK_HI] & ic_rw_addr_q[2:1] == 2'b11) & (i==1)) ) ;
ic_b_sb_rden[i] = {pt.ICACHE_NUM_WAYS{ic_b_rden[i]}} ;
for ( int j=0; j<pt.ICACHE_NUM_WAYS; j++) begin: way_clkens
ic_bank_way_clken[i][j] |= ic_b_sb_rden[i][j] | clk_override | ic_b_sb_wren[i][j];
end
end // block: wr_ens
end // block: clkens
// bank read enables
assign ic_rd_en_with_debug = (ic_rd_en | ic_debug_rd_en ) & ~(|ic_wr_en);
assign ic_rw_addr_q[pt.ICACHE_INDEX_HI:1] = (ic_debug_rd_en | ic_debug_wr_en) ?
{ic_debug_addr[pt.ICACHE_INDEX_HI:3],2'b0} :
ic_rw_addr[pt.ICACHE_INDEX_HI:1] ;
assign ic_rw_addr_q_inc[pt.ICACHE_TAG_LO-1:pt.ICACHE_DATA_INDEX_LO] = ic_rw_addr_q[pt.ICACHE_TAG_LO-1 : pt.ICACHE_DATA_INDEX_LO] + 1 ;
assign ic_rw_addr_wrap = ic_rw_addr_q[pt.ICACHE_BANK_HI] & (ic_rw_addr_q[2:1] == 2'b11) & ic_rd_en_with_debug & ~(|ic_wr_en[pt.ICACHE_NUM_WAYS-1:0]);
assign ic_cacheline_wrap_ff = ic_rw_addr_ff[pt.ICACHE_TAG_INDEX_LO-1:pt.ICACHE_BANK_LO] == {(pt.ICACHE_TAG_INDEX_LO - pt.ICACHE_BANK_LO){1'b1}};
assign ic_rw_addr_bank_q[0] = ~ic_rw_addr_wrap ? ic_rw_addr_q[pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO] : {ic_rw_addr_q[pt.ICACHE_INDEX_HI: pt.ICACHE_TAG_INDEX_LO] , ic_rw_addr_q_inc[pt.ICACHE_TAG_INDEX_LO-1: pt.ICACHE_DATA_INDEX_LO] } ;
assign ic_rw_addr_bank_q[1] = ic_rw_addr_q[pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO];
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rvdffie #(.WIDTH(int'(pt.ICACHE_TAG_INDEX_LO+pt.ICACHE_BANKS_WAY+pt.ICACHE_NUM_WAYS)),.OVERRIDE(1)) miscff
(.*,
.din({ ic_b_rden[pt.ICACHE_BANKS_WAY-1:0], ic_rw_addr_q[pt.ICACHE_TAG_INDEX_LO-1:1], ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0], ic_debug_rd_en}),
.dout({ic_b_rden_ff[pt.ICACHE_BANKS_WAY-1:0],ic_rw_addr_ff[pt.ICACHE_TAG_INDEX_LO-1:1],ic_debug_rd_way_en_ff[pt.ICACHE_NUM_WAYS-1:0],ic_debug_rd_en_ff})
);
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if (pt.ICACHE_WAYPACK == 0 ) begin : PACKED_0
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logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS_WIDTH-1:0] wrptr_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS_WIDTH-1:0] wrptr_in_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] sel_bypass_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] sel_bypass_ff_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0][(71*pt.ICACHE_NUM_WAYS)-1:0] sel_bypass_data_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] any_bypass_up;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] any_addr_match_up;
`define EL2_IC_DATA_SRAM(depth,width) \
ram_``depth``x``width ic_bank_sb_way_data ( \
.ME(ic_bank_way_clken_final_up[i][k]), \
.WE (ic_b_sb_wren[k][i]), \
.D (ic_sb_wr_data[k][``width-1:0]), \
.ADR(ic_rw_addr_bank_q[k][pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO]), \
.Q (wb_dout_pre_up[i][k]), \
.CLK (clk), \
.ROP ( ), \
.TEST1(ic_data_ext_in_pkt[i][k].TEST1), \
.RME(ic_data_ext_in_pkt[i][k].RME), \
.RM(ic_data_ext_in_pkt[i][k].RM), \
\
.LS(ic_data_ext_in_pkt[i][k].LS), \
.DS(ic_data_ext_in_pkt[i][k].DS), \
.SD(ic_data_ext_in_pkt[i][k].SD), \
\
.TEST_RNM(ic_data_ext_in_pkt[i][k].TEST_RNM), \
.BC1(ic_data_ext_in_pkt[i][k].BC1), \
.BC2(ic_data_ext_in_pkt[i][k].BC2) \
); \
if (pt.ICACHE_BYPASS_ENABLE == 1) begin \
assign wrptr_in_up[i][k] = (wrptr_up[i][k] == (pt.ICACHE_NUM_BYPASS-1)) ? '0 : (wrptr_up[i][k] + 1'd1); \
rvdffs #(pt.ICACHE_NUM_BYPASS_WIDTH) wrptr_ff(.*, .clk(active_clk), .en(|write_bypass_en_up[i][k]), .din (wrptr_in_up[i][k]), .dout(wrptr_up[i][k])) ; \
assign ic_b_sram_en_up[i][k] = ic_bank_way_clken[k][i]; \
assign ic_b_read_en_up[i][k] = ic_b_sram_en_up[i][k] & ic_b_sb_rden[k][i]; \
assign ic_b_write_en_up[i][k] = ic_b_sram_en_up[i][k] & ic_b_sb_wren[k][i]; \
assign ic_bank_way_clken_final_up[i][k] = ic_b_sram_en_up[i][k] & ~(|sel_bypass_up[i][k]); \
assign ic_b_rw_addr_up[i][k] = {ic_rw_addr[31:pt.ICACHE_INDEX_HI+1],ic_rw_addr_bank_q[k]}; \
assign ic_b_rw_addr_index_only_up[i][k] = ic_rw_addr_bank_q[k]; \
always_comb begin \
any_addr_match_up[i][k] = '0; \
for (int l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin \
any_addr_match_up[i][k] |= ic_b_addr_match_up[i][k][l]; \
end \
end \
// it is an error to ever have 2 entries with the same index and both valid \
for (genvar l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin: BYPASS \
// full match up to bit 31 \
assign ic_b_addr_match_up[i][k][l] = (wb_index_hold_up[i][k][l] == ic_b_rw_addr_up[i][k]) & index_valid_up[i][k][l]; \
assign ic_b_addr_match_index_only_up[i][k][l] = (wb_index_hold_up[i][k][l][pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO] == ic_b_rw_addr_index_only_up[i][k]) & index_valid_up[i][k][l]; \
\
assign ic_b_clear_en_up[i][k][l] = ic_b_write_en_up[i][k] & ic_b_addr_match_index_only_up[i][k][l]; \
\
assign sel_bypass_up[i][k][l] = ic_b_read_en_up[i][k] & ic_b_addr_match_up[i][k][l] ; \
\
assign write_bypass_en_up[i][k][l] = ic_b_read_en_up[i][k] & ~any_addr_match_up[i][k] & (wrptr_up[i][k] == l); \
\
rvdff #(1) write_bypass_ff (.*, .clk(active_clk), .din(write_bypass_en_up[i][k][l]), .dout(write_bypass_en_ff_up[i][k][l])) ; \
rvdffs #(1) index_val_ff (.*, .clk(active_clk), .en(write_bypass_en_up[i][k][l] | ic_b_clear_en_up[i][k][l]), .din(~ic_b_clear_en_up[i][k][l]), .dout(index_valid_up[i][k][l])) ; \
rvdff #(1) sel_hold_ff (.*, .clk(active_clk), .din(sel_bypass_up[i][k][l]), .dout(sel_bypass_ff_up[i][k][l])) ; \
rvdffe #((31-pt.ICACHE_DATA_INDEX_LO+1)) ic_addr_index (.*, .en(write_bypass_en_up[i][k][l]), .din (ic_b_rw_addr_up[i][k]), .dout(wb_index_hold_up[i][k][l])); \
rvdffe #(``width) rd_data_hold_ff (.*, .en(write_bypass_en_ff_up[i][k][l]), .din (wb_dout_pre_up[i][k]), .dout(wb_dout_hold_up[i][k][l])); \
end \
always_comb begin \
any_bypass_up[i][k] = '0; \
sel_bypass_data_up[i][k] = '0; \
for (int l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin \
any_bypass_up[i][k] |= sel_bypass_ff_up[i][k][l]; \
sel_bypass_data_up[i][k] |= (sel_bypass_ff_up[i][k][l]) ? wb_dout_hold_up[i][k][l] : '0; \
end \
wb_dout[i][k] = any_bypass_up[i][k] ? sel_bypass_data_up[i][k] : wb_dout_pre_up[i][k] ; \
end \
end \
else begin \
assign wb_dout[i][k] = wb_dout_pre_up[i][k] ; \
Branch 1.4
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assign ic_bank_way_clken_final_up[i][k] = ic_bank_way_clken[k][i]; \
Branch 1.3
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end
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: WAYS
for (genvar k=0; k<pt.ICACHE_BANKS_WAY; k++) begin: BANKS_WAY // 16B subbank
Initial checkin.
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if (pt.ICACHE_ECC) begin : ECC1
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [71-1:0] wb_dout_pre_up; // data and its bit enables
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [pt.ICACHE_NUM_BYPASS-1:0] [71-1:0] wb_dout_hold_up;
Initial checkin.
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if ($clog2(pt.ICACHE_DATA_DEPTH) == 13 ) begin : size_8192
Branch 1.3
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`EL2_IC_DATA_SRAM(8192,71)
Initial checkin.
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end
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 12 ) begin : size_4096
Branch 1.3
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`EL2_IC_DATA_SRAM(4096,71)
Initial checkin.
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end
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 11 ) begin : size_2048
Branch 1.3
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`EL2_IC_DATA_SRAM(2048,71)
end
Initial checkin.
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else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 10 ) begin : size_1024
Branch 1.3
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`EL2_IC_DATA_SRAM(1024,71)
end
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 9 ) begin : size_512
`EL2_IC_DATA_SRAM(512,71)
end
Initial checkin.
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else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 8 ) begin : size_256
Branch 1.3
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`EL2_IC_DATA_SRAM(256,71)
end
Initial checkin.
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else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 7 ) begin : size_128
Branch 1.3
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`EL2_IC_DATA_SRAM(128,71)
end
Initial checkin.
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else begin : size_64
Branch 1.3
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`EL2_IC_DATA_SRAM(64,71)
end
Initial checkin.
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end // if (pt.ICACHE_ECC)
else begin : ECC0
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [68-1:0] wb_dout_pre_up; // data and its bit enables
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_BANKS_WAY-1:0] [pt.ICACHE_NUM_BYPASS-1:0] [68-1:0] wb_dout_hold_up;
if ($clog2(pt.ICACHE_DATA_DEPTH) == 13 ) begin : size_8192
`EL2_IC_DATA_SRAM(8192,68)
end
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 12 ) begin : size_4096
`EL2_IC_DATA_SRAM(4096,68)
end
Initial checkin.
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else if ($clog2(pt.ICACHE_DATA_DEPTH) == 11 ) begin : size_2048
Branch 1.3
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`EL2_IC_DATA_SRAM(2048,68)
end
Initial checkin.
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else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 10 ) begin : size_1024
Branch 1.3
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`EL2_IC_DATA_SRAM(1024,68)
end
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 9 ) begin : size_512
`EL2_IC_DATA_SRAM(512,68)
end
Initial checkin.
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else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 8 ) begin : size_256
Branch 1.3
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`EL2_IC_DATA_SRAM(256,68)
Initial checkin.
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end
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 7 ) begin : size_128
Branch 1.3
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`EL2_IC_DATA_SRAM(128,68)
end
Initial checkin.
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else begin : size_64
Branch 1.3
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`EL2_IC_DATA_SRAM(64,68)
end
Initial checkin.
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end // else: !if(pt.ICACHE_ECC)
end // block: BANKS_WAY
end // block: WAYS
end // block: PACKED_0
// WAY PACKED
else begin : PACKED_1
Branch 1.3
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logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS_WIDTH-1:0] wrptr;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS_WIDTH-1:0] wrptr_in;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] sel_bypass;
logic [pt.ICACHE_BANKS_WAY-1:0][pt.ICACHE_NUM_BYPASS-1:0] sel_bypass_ff;
logic [pt.ICACHE_BANKS_WAY-1:0][(71*pt.ICACHE_NUM_WAYS)-1:0] sel_bypass_data;
logic [pt.ICACHE_BANKS_WAY-1:0] any_bypass;
logic [pt.ICACHE_BANKS_WAY-1:0] any_addr_match;
// SRAM macros
`define EL2_PACKED_IC_DATA_SRAM(depth,width,waywidth) \
ram_be_``depth``x``width ic_bank_sb_way_data ( \
.CLK (clk), \
.WE (|ic_b_sb_wren[k]), // OR of all the ways in the bank \
.WEM (ic_b_sb_bit_en_vec[k]), // 284 bits of bit enables \
.D ({pt.ICACHE_NUM_WAYS{ic_sb_wr_data[k][``waywidth-1:0]}}), \
.ADR (ic_rw_addr_bank_q[k][pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO]), \
.Q (wb_packeddout_pre[k]), \
.ME (|ic_bank_way_clken_final[k]), \
.ROP ( ), \
.TEST1 (ic_data_ext_in_pkt[0][k].TEST1), \
.RME (ic_data_ext_in_pkt[0][k].RME), \
.RM (ic_data_ext_in_pkt[0][k].RM), \
\
.LS (ic_data_ext_in_pkt[0][k].LS), \
.DS (ic_data_ext_in_pkt[0][k].DS), \
.SD (ic_data_ext_in_pkt[0][k].SD), \
\
.TEST_RNM (ic_data_ext_in_pkt[0][k].TEST_RNM), \
.BC1 (ic_data_ext_in_pkt[0][k].BC1), \
.BC2 (ic_data_ext_in_pkt[0][k].BC2) \
); \
\
if (pt.ICACHE_BYPASS_ENABLE == 1) begin \
\
assign wrptr_in[k] = (wrptr[k] == (pt.ICACHE_NUM_BYPASS-1)) ? '0 : (wrptr[k] + 1'd1); \
\
rvdffs #(pt.ICACHE_NUM_BYPASS_WIDTH) wrptr_ff(.*, .clk(active_clk), .en(|write_bypass_en[k]), .din (wrptr_in[k]), .dout(wrptr[k])) ; \
\
assign ic_b_sram_en[k] = |ic_bank_way_clken[k]; \
\
\
assign ic_b_read_en[k] = ic_b_sram_en[k] & (|ic_b_sb_rden[k]) ; \
assign ic_b_write_en[k] = ic_b_sram_en[k] & (|ic_b_sb_wren[k]); \
assign ic_bank_way_clken_final[k] = ic_b_sram_en[k] & ~(|sel_bypass[k]); \
\
assign ic_b_rw_addr[k] = {ic_rw_addr[31:pt.ICACHE_INDEX_HI+1],ic_rw_addr_bank_q[k]}; \
assign ic_b_rw_addr_index_only[k] = ic_rw_addr_bank_q[k]; \
\
always_comb begin \
any_addr_match[k] = '0; \
\
for (int l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin \
any_addr_match[k] |= ic_b_addr_match[k][l]; \
end \
end \
\
// it is an error to ever have 2 entries with the same index and both valid \
for (genvar l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin: BYPASS \
\
// full match up to bit 31 \
assign ic_b_addr_match[k][l] = (wb_index_hold[k][l] == ic_b_rw_addr[k]) & index_valid[k][l]; \
assign ic_b_addr_match_index_only[k][l] = (wb_index_hold[k][l][pt.ICACHE_INDEX_HI:pt.ICACHE_DATA_INDEX_LO] == ic_b_rw_addr_index_only[k]) & index_valid[k][l]; \
\
assign ic_b_clear_en[k][l] = ic_b_write_en[k] & ic_b_addr_match_index_only[k][l]; \
\
assign sel_bypass[k][l] = ic_b_read_en[k] & ic_b_addr_match[k][l] ; \
\
assign write_bypass_en[k][l] = ic_b_read_en[k] & ~any_addr_match[k] & (wrptr[k] == l); \
\
rvdff #(1) write_bypass_ff (.*, .clk(active_clk), .din(write_bypass_en[k][l]), .dout(write_bypass_en_ff[k][l])) ; \
rvdffs #(1) index_val_ff (.*, .clk(active_clk), .en(write_bypass_en[k][l] | ic_b_clear_en[k][l]), .din(~ic_b_clear_en[k][l]), .dout(index_valid[k][l])) ; \
rvdff #(1) sel_hold_ff (.*, .clk(active_clk), .din(sel_bypass[k][l]), .dout(sel_bypass_ff[k][l])) ; \
\
rvdffe #((31-pt.ICACHE_DATA_INDEX_LO+1)) ic_addr_index (.*, .en(write_bypass_en[k][l]), .din (ic_b_rw_addr[k]), .dout(wb_index_hold[k][l])); \
rvdffe #((``waywidth*pt.ICACHE_NUM_WAYS)) rd_data_hold_ff (.*, .en(write_bypass_en_ff[k][l]), .din (wb_packeddout_pre[k]), .dout(wb_packeddout_hold[k][l])); \
\
end // block: BYPASS \
\
always_comb begin \
any_bypass[k] = '0; \
sel_bypass_data[k] = '0; \
\
for (int l=0; l<pt.ICACHE_NUM_BYPASS; l++) begin \
any_bypass[k] |= sel_bypass_ff[k][l]; \
sel_bypass_data[k] |= (sel_bypass_ff[k][l]) ? wb_packeddout_hold[k][l] : '0; \
end \
\
wb_packeddout[k] = any_bypass[k] ? sel_bypass_data[k] : wb_packeddout_pre[k] ; \
end // always_comb begin \
\
end // if (pt.ICACHE_BYPASS_ENABLE == 1) \
else begin \
assign wb_packeddout[k] = wb_packeddout_pre[k] ; \
assign ic_bank_way_clken_final[k] = |ic_bank_way_clken[k] ; \
end
// generate IC DATA PACKED SRAMS for 2/4 ways
Initial checkin.
2020-01-23 06:22:50 +08:00
for (genvar k=0; k<pt.ICACHE_BANKS_WAY; k++) begin: BANKS_WAY // 16B subbank
if (pt.ICACHE_ECC) begin : ECC1
Branch 1.3
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logic [pt.ICACHE_BANKS_WAY-1:0] [(71*pt.ICACHE_NUM_WAYS)-1:0] wb_packeddout, ic_b_sb_bit_en_vec, wb_packeddout_pre; // data and its bit enables
logic [pt.ICACHE_BANKS_WAY-1:0] [pt.ICACHE_NUM_BYPASS-1:0] [(71*pt.ICACHE_NUM_WAYS)-1:0] wb_packeddout_hold;
Initial checkin.
2020-01-23 06:22:50 +08:00
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: BITEN
assign ic_b_sb_bit_en_vec[k][(71*i)+70:71*i] = {71{ic_b_sb_wren[k][i]}};
end
Branch 1.3
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// SRAMS with ECC (single/double detect; no correct)
Initial checkin.
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if ($clog2(pt.ICACHE_DATA_DEPTH) == 13 ) begin : size_8192
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(8192,284,71) // 64b data + 7b ecc
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(8192,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_8192
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 12 ) begin : size_4096
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(4096,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(4096,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_4096
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 11 ) begin : size_2048
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(2048,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(2048,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_2048
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 10 ) begin : size_1024
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(1024,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(1024,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_1024
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 9 ) begin : size_512
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(512,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(512,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_512
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 8 ) begin : size_256
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(256,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(256,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_256
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 7 ) begin : size_128
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(128,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(128,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_128
else begin : size_64
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(64,284,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(64,142,71)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_64
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: WAYS
assign wb_dout[i][k][70:0] = wb_packeddout[k][(71*i)+70:71*i];
end : WAYS
end // if (pt.ICACHE_ECC)
else begin : ECC0
Branch 1.3
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logic [pt.ICACHE_BANKS_WAY-1:0] [(68*pt.ICACHE_NUM_WAYS)-1:0] wb_packeddout, ic_b_sb_bit_en_vec, wb_packeddout_pre; // data and its bit enables
logic [pt.ICACHE_BANKS_WAY-1:0] [pt.ICACHE_NUM_BYPASS-1:0] [(68*pt.ICACHE_NUM_WAYS)-1:0] wb_packeddout_hold;
Initial checkin.
2020-01-23 06:22:50 +08:00
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: BITEN
assign ic_b_sb_bit_en_vec[k][(68*i)+67:68*i] = {68{ic_b_sb_wren[k][i]}};
end
Branch 1.3
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// SRAMs with parity
Initial checkin.
2020-01-23 06:22:50 +08:00
if ($clog2(pt.ICACHE_DATA_DEPTH) == 13 ) begin : size_8192
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(8192,272,68) // 64b data + 4b parity
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(8192,136,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_8192
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 12 ) begin : size_4096
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(4096,272,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(4096,136,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_4096
else if ($clog2(pt.ICACHE_DATA_DEPTH) == 11 ) begin : size_2048
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(2048,272,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(2048,136,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_2048
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 10 ) begin : size_1024
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(1024,272,68)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
else begin : WAYS
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`EL2_PACKED_IC_DATA_SRAM(1024,136,68)
Initial checkin.
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end // block: WAYS
end // block: size_1024
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 9 ) begin : size_512
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(512,272,68)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(512,136,68)
Initial checkin.
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end // block: WAYS
end // block: size_512
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 8 ) begin : size_256
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(256,272,68)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(256,136,68)
Initial checkin.
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end // block: WAYS
end // block: size_256
else if ( $clog2(pt.ICACHE_DATA_DEPTH) == 7 ) begin : size_128
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(128,272,68)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(128,136,68)
Initial checkin.
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end // block: WAYS
end // block: size_128
else begin : size_64
Branch 1.3
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if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
`EL2_PACKED_IC_DATA_SRAM(64,272,68)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_PACKED_IC_DATA_SRAM(64,136,68)
Initial checkin.
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end // block: WAYS
end // block: size_64
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: WAYS
assign wb_dout[i][k][67:0] = wb_packeddout[k][(68*i)+67:68*i];
end
end // block: ECC0
end // block: BANKS_WAY
end // block: PACKED_1
assign ic_rd_hit_q[pt.ICACHE_NUM_WAYS-1:0] = ic_debug_rd_en_ff ? ic_debug_rd_way_en_ff[pt.ICACHE_NUM_WAYS-1:0] : ic_rd_hit[pt.ICACHE_NUM_WAYS-1:0] ;
if ( pt.ICACHE_ECC ) begin : ECC1_MUX
assign ic_bank_wr_data[1] = ic_wr_data[1][70:0];
assign ic_bank_wr_data[0] = ic_wr_data[0][70:0];
always_comb begin : rd_mux
wb_dout_way_pre[pt.ICACHE_NUM_WAYS-1:0] = '0;
for ( int i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways
for ( int j=0; j<pt.ICACHE_BANKS_WAY; j++) begin : banks
wb_dout_way_pre[i][70:0] |= ({71{(ic_rw_addr_ff[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == (pt.ICACHE_BANK_BITS)'(j))}} & wb_dout[i][j]);
wb_dout_way_pre[i][141 : 71] |= ({71{(ic_rw_addr_ff[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == (pt.ICACHE_BANK_BITS)'(j-1))}} & wb_dout[i][j]);
end
end
end
Branch 1.3
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for ( genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways_mux1
Initial checkin.
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assign wb_dout_way[i][63:0] = (ic_rw_addr_ff[2:1] == 2'b00) ? wb_dout_way_pre[i][63:0] :
(ic_rw_addr_ff[2:1] == 2'b01) ?{wb_dout_way_pre[i][86:71], wb_dout_way_pre[i][63:16]} :
(ic_rw_addr_ff[2:1] == 2'b10) ?{wb_dout_way_pre[i][102:71],wb_dout_way_pre[i][63:32]} :
{wb_dout_way_pre[i][119:71],wb_dout_way_pre[i][63:48]};
assign wb_dout_way_with_premux[i][63:0] = ic_sel_premux_data ? ic_premux_data[63:0] : wb_dout_way[i][63:0] ;
end
always_comb begin : rd_out
ic_debug_rd_data[70:0] = '0;
ic_rd_data[63:0] = '0;
wb_dout_ecc[141:0] = '0;
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for ( int i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways_mux2
Initial checkin.
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ic_rd_data[63:0] |= ({64{ic_rd_hit_q[i] | ic_sel_premux_data}}) & wb_dout_way_with_premux[i][63:0];
ic_debug_rd_data[70:0] |= ({71{ic_rd_hit_q[i]}}) & wb_dout_way_pre[i][70:0];
wb_dout_ecc[141:0] |= {142{ic_rd_hit_q[i]}} & wb_dout_way_pre[i];
end
end
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for (genvar i=0; i < pt.ICACHE_BANKS_WAY ; i++) begin : ic_ecc_error
Initial checkin.
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assign bank_check_en[i] = |ic_rd_hit[pt.ICACHE_NUM_WAYS-1:0] & ((i==0) | (~ic_cacheline_wrap_ff & (ic_b_rden_ff[pt.ICACHE_BANKS_WAY-1:0] == {pt.ICACHE_BANKS_WAY{1'b1}}))); // always check the lower address bank, and drop the upper address bank on a CL wrap
assign wb_dout_ecc_bank[i] = wb_dout_ecc[(71*i)+70:(71*i)];
rvecc_decode_64 ecc_decode_64 (
.en (bank_check_en[i]),
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.din (wb_dout_ecc_bank[i][63 : 0]), // [134:71], [63:0]
Initial checkin.
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.ecc_in (wb_dout_ecc_bank[i][70 : 64]), // [141:135] [70:64]
.ecc_error (ic_eccerr[i]));
// or the sb and db error detects into 1 signal called aligndataperr[i] where i corresponds to 2B position
assign ic_parerr[i] = '0 ;
end // block: ic_ecc_error
end // if ( pt.ICACHE_ECC )
else begin : ECC0_MUX
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assign ic_bank_wr_data[1] = ic_wr_data[1][70:0];
assign ic_bank_wr_data[0] = ic_wr_data[0][70:0];
Initial checkin.
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always_comb begin : rd_mux
wb_dout_way_pre[pt.ICACHE_NUM_WAYS-1:0] = '0;
for ( int i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways
for ( int j=0; j<pt.ICACHE_BANKS_WAY; j++) begin : banks
Branch 1.3
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wb_dout_way_pre[i][67:0] |= ({68{(ic_rw_addr_ff[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == (pt.ICACHE_BANK_BITS)'(j))}} & wb_dout[i][j][67:0]);
wb_dout_way_pre[i][135 : 68] |= ({68{(ic_rw_addr_ff[pt.ICACHE_BANK_HI : pt.ICACHE_BANK_LO] == (pt.ICACHE_BANK_BITS)'(j-1))}} & wb_dout[i][j][67:0]);
Initial checkin.
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end
end
end
// When we straddle the banks like this - the ECC we capture is not correct ??
for ( genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways_mux1
assign wb_dout_way[i][63:0] = (ic_rw_addr_ff[2:1] == 2'b00) ? wb_dout_way_pre[i][63:0] :
(ic_rw_addr_ff[2:1] == 2'b01) ?{wb_dout_way_pre[i][83:68], wb_dout_way_pre[i][63:16]} :
(ic_rw_addr_ff[2:1] == 2'b10) ?{wb_dout_way_pre[i][99:68], wb_dout_way_pre[i][63:32]} :
{wb_dout_way_pre[i][115:68], wb_dout_way_pre[i][63:48]};
assign wb_dout_way_with_premux[i][63:0] = ic_sel_premux_data ? ic_premux_data[63:0] : wb_dout_way[i][63:0] ;
end
always_comb begin : rd_out
ic_rd_data[63:0] = '0;
ic_debug_rd_data[70:0] = '0;
wb_dout_ecc[135:0] = '0;
for ( int i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : num_ways_mux2
ic_rd_data[63:0] |= ({64{ic_rd_hit_q[i] | ic_sel_premux_data}} & wb_dout_way_with_premux[i][63:0]);
Branch 1.3
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ic_debug_rd_data[70:0] |= ({71{ic_rd_hit_q[i]}}) & {3'b0,wb_dout_way_pre[i][67:0]};
wb_dout_ecc[135:0] |= {136{ic_rd_hit_q[i]}} & wb_dout_way_pre[i][135:0];
Initial checkin.
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end
end
assign wb_dout_ecc_bank[0] = wb_dout_ecc[67:0];
assign wb_dout_ecc_bank[1] = wb_dout_ecc[135:68];
logic [pt.ICACHE_BANKS_WAY-1:0][3:0] ic_parerr_bank;
for (genvar i=0; i < pt.ICACHE_BANKS_WAY ; i++) begin : ic_par_error
assign bank_check_en[i] = |ic_rd_hit[pt.ICACHE_NUM_WAYS-1:0] & ((i==0) | (~ic_cacheline_wrap_ff & (ic_b_rden_ff[pt.ICACHE_BANKS_WAY-1:0] == {pt.ICACHE_BANKS_WAY{1'b1}}))); // always check the lower address bank, and drop the upper address bank on a CL wrap
for (genvar j=0; j<4; j++) begin : parity
rveven_paritycheck pchk (
.data_in (wb_dout_ecc_bank[i][16*(j+1)-1: 16*j]),
.parity_in (wb_dout_ecc_bank[i][64+j]),
.parity_err(ic_parerr_bank[i][j] )
);
end
assign ic_eccerr [i] = '0 ;
end
assign ic_parerr[1] = (|ic_parerr_bank[1][3:0]) & bank_check_en[1];
assign ic_parerr[0] = (|ic_parerr_bank[0][3:0]) & bank_check_en[0];
end // else: !if( pt.ICACHE_ECC )
endmodule // EL2_IC_DATA
//=============================================================================================================================================================
///\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ END OF IC DATA MODULE \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
//\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
//=============================================================================================================================================================
/////////////////////////////////////////////////
////// ICACHE TAG MODULE ////////////////////
/////////////////////////////////////////////////
module EL2_IC_TAG
import el2_pkg::*;
#(
`include "el2_param.vh"
)
(
input logic clk,
Branch 1.3
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input logic active_clk,
Initial checkin.
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input logic rst_l,
input logic clk_override,
input logic dec_tlu_core_ecc_disable,
input logic [31:3] ic_rw_addr,
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_wr_en, // way
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_valid,
input logic ic_rd_en,
input logic [pt.ICACHE_INDEX_HI:3] ic_debug_addr, // Read/Write addresss to the Icache.
input logic ic_debug_rd_en, // Icache debug rd
input logic ic_debug_wr_en, // Icache debug wr
input logic ic_debug_tag_array, // Debug tag array
input logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_way, // Debug way. Rd or Wr.
Branch 1.3
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input el2_ic_tag_ext_in_pkt_t [pt.ICACHE_NUM_WAYS-1:0] ic_tag_ext_in_pkt,
Initial checkin.
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output logic [25:0] ictag_debug_rd_data,
input logic [70:0] ic_debug_wr_data, // Debug wr cache.
output logic [pt.ICACHE_NUM_WAYS-1:0] ic_rd_hit,
output logic ic_tag_perr,
input logic scan_mode
) ;
logic [pt.ICACHE_NUM_WAYS-1:0] [25:0] ic_tag_data_raw;
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0] [25:0] ic_tag_data_raw_pre;
Initial checkin.
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logic [pt.ICACHE_NUM_WAYS-1:0] [36:pt.ICACHE_TAG_LO] w_tout;
logic [25:0] ic_tag_wr_data ;
logic [pt.ICACHE_NUM_WAYS-1:0] [31:0] ic_tag_corrected_data_unc;
logic [pt.ICACHE_NUM_WAYS-1:0] [06:0] ic_tag_corrected_ecc_unc;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_single_ecc_error;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_double_ecc_error;
logic [6:0] ic_tag_ecc;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_way_perr ;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_rd_way_en ;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_rd_way_en_ff ;
logic [pt.ICACHE_INDEX_HI: pt.ICACHE_TAG_INDEX_LO] ic_rw_addr_q;
logic [31:pt.ICACHE_TAG_LO] ic_rw_addr_ff;
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_rden_q; // way
Initial checkin.
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logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_wren; // way
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_wren_q; // way
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_clken;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_debug_wr_way_en; // debug wr_way
logic ic_rd_en_ff;
logic ic_tag_parity;
Branch 1.3
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Initial checkin.
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assign ic_tag_wren [pt.ICACHE_NUM_WAYS-1:0] = ic_wr_en[pt.ICACHE_NUM_WAYS-1:0] & {pt.ICACHE_NUM_WAYS{(ic_rw_addr[pt.ICACHE_BEAT_ADDR_HI:4] == {pt.ICACHE_BEAT_BITS-1{1'b1}})}} ;
assign ic_tag_clken[pt.ICACHE_NUM_WAYS-1:0] = {pt.ICACHE_NUM_WAYS{ic_rd_en | clk_override}} | ic_wr_en[pt.ICACHE_NUM_WAYS-1:0] | ic_debug_wr_way_en[pt.ICACHE_NUM_WAYS-1:0] | ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0];
Branch 1.3
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rvdff #(1) rd_en_ff (.*, .clk(active_clk),
Initial checkin.
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.din (ic_rd_en),
.dout(ic_rd_en_ff)) ;
Branch 1.3
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rvdffie #(32-pt.ICACHE_TAG_LO) adr_ff (.*,
.din ({ic_rw_addr[31:pt.ICACHE_TAG_LO]}),
.dout({ic_rw_addr_ff[31:pt.ICACHE_TAG_LO]})
);
Initial checkin.
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localparam PAD_BITS = 21 - (32 - pt.ICACHE_TAG_LO); // sizing for a max tag width.
// tags
assign ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0] = {pt.ICACHE_NUM_WAYS{ic_debug_rd_en & ic_debug_tag_array}} & ic_debug_way[pt.ICACHE_NUM_WAYS-1:0] ;
assign ic_debug_wr_way_en[pt.ICACHE_NUM_WAYS-1:0] = {pt.ICACHE_NUM_WAYS{ic_debug_wr_en & ic_debug_tag_array}} & ic_debug_way[pt.ICACHE_NUM_WAYS-1:0] ;
assign ic_tag_wren_q[pt.ICACHE_NUM_WAYS-1:0] = ic_tag_wren[pt.ICACHE_NUM_WAYS-1:0] |
ic_debug_wr_way_en[pt.ICACHE_NUM_WAYS-1:0] ;
Branch 1.3
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assign ic_tag_rden_q[pt.ICACHE_NUM_WAYS-1:0] = ({pt.ICACHE_NUM_WAYS{ic_rd_en }} | ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0] ) & {pt.ICACHE_NUM_WAYS{~(|ic_wr_en) & ~ic_debug_wr_en}};
Initial checkin.
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if (pt.ICACHE_TAG_LO == 11) begin: SMALLEST
if (pt.ICACHE_ECC) begin : ECC1_W
rvecc_encode tag_ecc_encode (
.din ({{pt.ICACHE_TAG_LO{1'b0}}, ic_rw_addr[31:pt.ICACHE_TAG_LO]}),
.ecc_out({ ic_tag_ecc[6:0]}));
assign ic_tag_wr_data[25:0] = (ic_debug_wr_en & ic_debug_tag_array) ?
{ic_debug_wr_data[68:64], ic_debug_wr_data[31:11]} :
{ic_tag_ecc[4:0], ic_rw_addr[31:pt.ICACHE_TAG_LO]} ;
end
else begin : ECC0_W
rveven_paritygen #(32-pt.ICACHE_TAG_LO) pargen (.data_in (ic_rw_addr[31:pt.ICACHE_TAG_LO]),
.parity_out(ic_tag_parity));
assign ic_tag_wr_data[21:0] = (ic_debug_wr_en & ic_debug_tag_array) ?
{ic_debug_wr_data[64], ic_debug_wr_data[31:11]} :
{ic_tag_parity, ic_rw_addr[31:pt.ICACHE_TAG_LO]} ;
end // else: !if(pt.ICACHE_ECC)
end // block: SMALLEST
else begin: OTHERS
if(pt.ICACHE_ECC) begin :ECC1_W
rvecc_encode tag_ecc_encode (
.din ({{pt.ICACHE_TAG_LO{1'b0}}, ic_rw_addr[31:pt.ICACHE_TAG_LO]}),
.ecc_out({ ic_tag_ecc[6:0]}));
assign ic_tag_wr_data[25:0] = (ic_debug_wr_en & ic_debug_tag_array) ?
{ic_debug_wr_data[68:64],ic_debug_wr_data[31:11]} :
{ic_tag_ecc[4:0], {PAD_BITS{1'b0}},ic_rw_addr[31:pt.ICACHE_TAG_LO]} ;
end
else begin :ECC0_W
logic ic_tag_parity ;
rveven_paritygen #(32-pt.ICACHE_TAG_LO) pargen (.data_in (ic_rw_addr[31:pt.ICACHE_TAG_LO]),
.parity_out(ic_tag_parity));
assign ic_tag_wr_data[21:0] = (ic_debug_wr_en & ic_debug_tag_array) ?
{ic_debug_wr_data[64], ic_debug_wr_data[31:11]} :
{ic_tag_parity, {PAD_BITS{1'b0}},ic_rw_addr[31:pt.ICACHE_TAG_LO]} ;
end // else: !if(pt.ICACHE_ECC)
end // block: OTHERS
assign ic_rw_addr_q[pt.ICACHE_INDEX_HI: pt.ICACHE_TAG_INDEX_LO] = (ic_debug_rd_en | ic_debug_wr_en) ?
ic_debug_addr[pt.ICACHE_INDEX_HI: pt.ICACHE_TAG_INDEX_LO] :
ic_rw_addr[pt.ICACHE_INDEX_HI: pt.ICACHE_TAG_INDEX_LO] ;
Branch 1.3
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rvdff #(pt.ICACHE_NUM_WAYS) tag_rd_wy_ff (.*, .clk(active_clk),
Initial checkin.
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.din ({ic_debug_rd_way_en[pt.ICACHE_NUM_WAYS-1:0]}),
.dout({ic_debug_rd_way_en_ff[pt.ICACHE_NUM_WAYS-1:0]}));
if (pt.ICACHE_WAYPACK == 0 ) begin : PACKED_0
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0] ic_b_sram_en;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_b_read_en;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_b_write_en;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] [pt.ICACHE_INDEX_HI : pt.ICACHE_TAG_INDEX_LO] wb_index_hold;
logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_INDEX_HI : pt.ICACHE_TAG_INDEX_LO] ic_b_rw_addr;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] write_bypass_en; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] write_bypass_en_ff; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] index_valid; //bank
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] ic_b_clear_en;
logic [pt.ICACHE_NUM_WAYS-1:0][pt.ICACHE_TAG_NUM_BYPASS-1:0] ic_b_addr_match;
logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS_WIDTH-1:0] wrptr;
logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS_WIDTH-1:0] wrptr_in;
logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS-1:0] sel_bypass;
logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS-1:0] sel_bypass_ff;
logic [pt.ICACHE_NUM_WAYS-1:0][25:0] sel_bypass_data;
logic [pt.ICACHE_NUM_WAYS-1:0] any_bypass;
logic [pt.ICACHE_NUM_WAYS-1:0] any_addr_match;
logic [pt.ICACHE_NUM_WAYS-1:0] ic_tag_clken_final;
`define EL2_IC_TAG_SRAM(depth,width) \
ram_``depth``x``width ic_way_tag ( \
.ME(ic_tag_clken_final[i]), \
.WE (ic_tag_wren_q[i]), \
.D (ic_tag_wr_data[``width-1:0]), \
.ADR(ic_rw_addr_q[pt.ICACHE_INDEX_HI:pt.ICACHE_TAG_INDEX_LO]), \
.Q (ic_tag_data_raw_pre[i][``width-1:0]), \
.CLK (clk), \
.ROP ( ), \
\
.TEST1(ic_tag_ext_in_pkt[i].TEST1), \
.RME(ic_tag_ext_in_pkt[i].RME), \
.RM(ic_tag_ext_in_pkt[i].RM), \
\
.LS(ic_tag_ext_in_pkt[i].LS), \
.DS(ic_tag_ext_in_pkt[i].DS), \
.SD(ic_tag_ext_in_pkt[i].SD), \
\
.TEST_RNM(ic_tag_ext_in_pkt[i].TEST_RNM), \
.BC1(ic_tag_ext_in_pkt[i].BC1), \
.BC2(ic_tag_ext_in_pkt[i].BC2) \
\
); \
\
\
\
\
if (pt.ICACHE_TAG_BYPASS_ENABLE == 1) begin \
\
assign wrptr_in[i] = (wrptr[i] == (pt.ICACHE_TAG_NUM_BYPASS-1)) ? '0 : (wrptr[i] + 1'd1); \
\
rvdffs #(pt.ICACHE_TAG_NUM_BYPASS_WIDTH) wrptr_ff(.*, .clk(active_clk), .en(|write_bypass_en[i]), .din (wrptr_in[i]), .dout(wrptr[i])) ; \
\
assign ic_b_sram_en[i] = ic_tag_clken[i]; \
\
assign ic_b_read_en[i] = ic_b_sram_en[i] & (ic_tag_rden_q[i]); \
assign ic_b_write_en[i] = ic_b_sram_en[i] & (ic_tag_wren_q[i]); \
assign ic_tag_clken_final[i] = ic_b_sram_en[i] & ~(|sel_bypass[i]); \
\
// LSB is pt.ICACHE_TAG_INDEX_LO] \
assign ic_b_rw_addr[i] = {ic_rw_addr_q}; \
\
always_comb begin \
any_addr_match[i] = '0; \
\
for (int l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin \
any_addr_match[i] |= (ic_b_addr_match[i][l] & index_valid[i][l]); \
end \
end \
\
// it is an error to ever have 2 entries with the same index and both valid \
for (genvar l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin: BYPASS \
\
assign ic_b_addr_match[i][l] = (wb_index_hold[i][l] == ic_b_rw_addr[i]) & index_valid[i][l]; \
\
assign ic_b_clear_en[i][l] = ic_b_write_en[i] & ic_b_addr_match[i][l]; \
\
assign sel_bypass[i][l] = ic_b_read_en[i] & ic_b_addr_match[i][l] ; \
\
assign write_bypass_en[i][l] = ic_b_read_en[i] & ~any_addr_match[i] & (wrptr[i] == l); \
\
rvdff #(1) write_bypass_ff (.*, .clk(active_clk), .din(write_bypass_en[i][l]), .dout(write_bypass_en_ff[i][l])) ; \
rvdffs #(1) index_val_ff (.*, .clk(active_clk), .en(write_bypass_en[i][l] | ic_b_clear_en[i][l]), .din(~ic_b_clear_en[i][l]), .dout(index_valid[i][l])) ; \
rvdff #(1) sel_hold_ff (.*, .clk(active_clk), .din(sel_bypass[i][l]), .dout(sel_bypass_ff[i][l])) ; \
\
rvdffe #(.WIDTH(pt.ICACHE_INDEX_HI-pt.ICACHE_TAG_INDEX_LO+1),.OVERRIDE(1)) ic_addr_index (.*, .en(write_bypass_en[i][l]), .din (ic_b_rw_addr[i]), .dout(wb_index_hold[i][l])); \
rvdffe #(``width) rd_data_hold_ff (.*, .en(write_bypass_en_ff[i][l]), .din (ic_tag_data_raw_pre[i][``width-1:0]), .dout(wb_dout_hold[i][l])); \
\
end // block: BYPASS \
\
always_comb begin \
any_bypass[i] = '0; \
sel_bypass_data[i] = '0; \
\
for (int l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin \
any_bypass[i] |= sel_bypass_ff[i][l]; \
sel_bypass_data[i] |= (sel_bypass_ff[i][l]) ? wb_dout_hold[i][l] : '0; \
end \
\
ic_tag_data_raw[i] = any_bypass[i] ? sel_bypass_data[i] : ic_tag_data_raw_pre[i] ; \
end // always_comb begin \
\
end // if (pt.ICACHE_BYPASS_ENABLE == 1) \
else begin \
assign ic_tag_data_raw[i] = ic_tag_data_raw_pre[i] ; \
assign ic_tag_clken_final[i] = ic_tag_clken[i]; \
end
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: WAYS
Initial checkin.
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if (pt.ICACHE_ECC) begin : ECC1
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS-1:0][25 :0] wb_dout_hold;
Initial checkin.
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if (pt.ICACHE_TAG_DEPTH == 32) begin : size_32
Branch 1.3
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`EL2_IC_TAG_SRAM(32,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 32)
if (pt.ICACHE_TAG_DEPTH == 64) begin : size_64
Branch 1.3
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`EL2_IC_TAG_SRAM(64,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 64)
if (pt.ICACHE_TAG_DEPTH == 128) begin : size_128
Branch 1.3
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`EL2_IC_TAG_SRAM(128,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 128)
if (pt.ICACHE_TAG_DEPTH == 256) begin : size_256
Branch 1.3
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`EL2_IC_TAG_SRAM(256,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 256)
if (pt.ICACHE_TAG_DEPTH == 512) begin : size_512
Branch 1.3
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`EL2_IC_TAG_SRAM(512,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 512)
if (pt.ICACHE_TAG_DEPTH == 1024) begin : size_1024
Branch 1.3
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`EL2_IC_TAG_SRAM(1024,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 1024)
if (pt.ICACHE_TAG_DEPTH == 2048) begin : size_2048
Branch 1.3
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`EL2_IC_TAG_SRAM(2048,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 2048)
if (pt.ICACHE_TAG_DEPTH == 4096) begin : size_4096
Branch 1.3
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`EL2_IC_TAG_SRAM(4096,26)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 4096)
assign w_tout[i][31:pt.ICACHE_TAG_LO] = ic_tag_data_raw[i][31-pt.ICACHE_TAG_LO:0] ;
assign w_tout[i][36:32] = ic_tag_data_raw[i][25:21] ;
rvecc_decode ecc_decode (
.en(~dec_tlu_core_ecc_disable & ic_rd_en_ff),
.sed_ded ( 1'b1 ), // 1 : means only detection
.din({11'b0,ic_tag_data_raw[i][20:0]}),
.ecc_in({2'b0, ic_tag_data_raw[i][25:21]}),
.dout(ic_tag_corrected_data_unc[i][31:0]),
.ecc_out(ic_tag_corrected_ecc_unc[i][6:0]),
.single_ecc_error(ic_tag_single_ecc_error[i]),
.double_ecc_error(ic_tag_double_ecc_error[i]));
assign ic_tag_way_perr[i]= ic_tag_single_ecc_error[i] | ic_tag_double_ecc_error[i] ;
end
else begin : ECC0
Branch 1.3
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logic [pt.ICACHE_NUM_WAYS-1:0] [pt.ICACHE_TAG_NUM_BYPASS-1:0][21 :0] wb_dout_hold;
assign ic_tag_data_raw_pre[i][25:22] = '0 ;
Initial checkin.
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Branch 1.3
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if (pt.ICACHE_TAG_DEPTH == 32) begin : size_32
`EL2_IC_TAG_SRAM(32,22)
end // if (pt.ICACHE_TAG_DEPTH == 32)
if (pt.ICACHE_TAG_DEPTH == 64) begin : size_64
`EL2_IC_TAG_SRAM(64,22)
end // if (pt.ICACHE_TAG_DEPTH == 64)
if (pt.ICACHE_TAG_DEPTH == 128) begin : size_128
`EL2_IC_TAG_SRAM(128,22)
end // if (pt.ICACHE_TAG_DEPTH == 128)
if (pt.ICACHE_TAG_DEPTH == 256) begin : size_256
`EL2_IC_TAG_SRAM(256,22)
end // if (pt.ICACHE_TAG_DEPTH == 256)
if (pt.ICACHE_TAG_DEPTH == 512) begin : size_512
`EL2_IC_TAG_SRAM(512,22)
end // if (pt.ICACHE_TAG_DEPTH == 512)
if (pt.ICACHE_TAG_DEPTH == 1024) begin : size_1024
`EL2_IC_TAG_SRAM(1024,22)
end // if (pt.ICACHE_TAG_DEPTH == 1024)
Initial checkin.
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if (pt.ICACHE_TAG_DEPTH == 2048) begin : size_2048
Branch 1.3
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`EL2_IC_TAG_SRAM(2048,22)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 2048)
Branch 1.3
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if (pt.ICACHE_TAG_DEPTH == 4096) begin : size_4096
`EL2_IC_TAG_SRAM(4096,22)
Initial checkin.
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end // if (pt.ICACHE_TAG_DEPTH == 4096)
assign w_tout[i][31:pt.ICACHE_TAG_LO] = ic_tag_data_raw[i][31-pt.ICACHE_TAG_LO:0] ;
assign w_tout[i][32] = ic_tag_data_raw[i][21] ;
rveven_paritycheck #(32-pt.ICACHE_TAG_LO) parcheck(.data_in (w_tout[i][31:pt.ICACHE_TAG_LO]),
.parity_in (w_tout[i][32]),
.parity_err(ic_tag_way_perr[i]));
end // else: !if(pt.ICACHE_ECC)
end // block: WAYS
end // block: PACKED_0
else begin : PACKED_1
Branch 1.3
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logic ic_b_sram_en;
logic ic_b_read_en;
logic ic_b_write_en;
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] [pt.ICACHE_INDEX_HI : pt.ICACHE_TAG_INDEX_LO] wb_index_hold;
logic [pt.ICACHE_INDEX_HI : pt.ICACHE_TAG_INDEX_LO] ic_b_rw_addr;
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] write_bypass_en; //bank
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] write_bypass_en_ff; //bank
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] index_valid; //bank
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] ic_b_clear_en;
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] ic_b_addr_match;
logic [pt.ICACHE_TAG_NUM_BYPASS_WIDTH-1:0] wrptr;
logic [pt.ICACHE_TAG_NUM_BYPASS_WIDTH-1:0] wrptr_in;
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] sel_bypass;
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0] sel_bypass_ff;
logic [(26*pt.ICACHE_NUM_WAYS)-1:0] sel_bypass_data;
logic any_bypass;
logic any_addr_match;
logic ic_tag_clken_final;
`define EL2_IC_TAG_PACKED_SRAM(depth,width) \
ram_be_``depth``x``width ic_way_tag ( \
.ME ( ic_tag_clken_final), \
.WE (|ic_tag_wren_q[pt.ICACHE_NUM_WAYS-1:0]), \
.WEM (ic_tag_wren_biten_vec[``width-1:0]), \
\
.D ({pt.ICACHE_NUM_WAYS{ic_tag_wr_data[``width/pt.ICACHE_NUM_WAYS-1:0]}}), \
.ADR (ic_rw_addr_q[pt.ICACHE_INDEX_HI:pt.ICACHE_TAG_INDEX_LO]), \
.Q (ic_tag_data_raw_packed_pre[``width-1:0]), \
.CLK (clk), \
.ROP ( ), \
\
.TEST1 (ic_tag_ext_in_pkt[0].TEST1), \
.RME (ic_tag_ext_in_pkt[0].RME), \
.RM (ic_tag_ext_in_pkt[0].RM), \
\
.LS (ic_tag_ext_in_pkt[0].LS), \
.DS (ic_tag_ext_in_pkt[0].DS), \
.SD (ic_tag_ext_in_pkt[0].SD), \
\
.TEST_RNM (ic_tag_ext_in_pkt[0].TEST_RNM), \
.BC1 (ic_tag_ext_in_pkt[0].BC1), \
.BC2 (ic_tag_ext_in_pkt[0].BC2) \
\
); \
\
if (pt.ICACHE_TAG_BYPASS_ENABLE == 1) begin \
\
assign wrptr_in = (wrptr == (pt.ICACHE_TAG_NUM_BYPASS-1)) ? '0 : (wrptr + 1'd1); \
\
rvdffs #(pt.ICACHE_TAG_NUM_BYPASS_WIDTH) wrptr_ff(.*, .clk(active_clk), .en(|write_bypass_en), .din (wrptr_in), .dout(wrptr)) ; \
\
assign ic_b_sram_en = |ic_tag_clken; \
\
assign ic_b_read_en = ic_b_sram_en & (|ic_tag_rden_q); \
assign ic_b_write_en = ic_b_sram_en & (|ic_tag_wren_q); \
assign ic_tag_clken_final = ic_b_sram_en & ~(|sel_bypass); \
\
// LSB is pt.ICACHE_TAG_INDEX_LO] \
assign ic_b_rw_addr = {ic_rw_addr_q}; \
\
always_comb begin \
any_addr_match = '0; \
\
for (int l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin \
any_addr_match |= ic_b_addr_match[l]; \
end \
end \
\
// it is an error to ever have 2 entries with the same index and both valid \
for (genvar l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin: BYPASS \
\
assign ic_b_addr_match[l] = (wb_index_hold[l] == ic_b_rw_addr) & index_valid[l]; \
\
assign ic_b_clear_en[l] = ic_b_write_en & ic_b_addr_match[l]; \
\
assign sel_bypass[l] = ic_b_read_en & ic_b_addr_match[l] ; \
\
assign write_bypass_en[l] = ic_b_read_en & ~any_addr_match & (wrptr == l); \
\
rvdff #(1) write_bypass_ff (.*, .clk(active_clk), .din(write_bypass_en[l]), .dout(write_bypass_en_ff[l])) ; \
rvdffs #(1) index_val_ff (.*, .clk(active_clk), .en(write_bypass_en[l] | ic_b_clear_en[l]), .din(~ic_b_clear_en[l]), .dout(index_valid[l])) ; \
rvdff #(1) sel_hold_ff (.*, .clk(active_clk), .din(sel_bypass[l]), .dout(sel_bypass_ff[l])) ; \
\
rvdffe #(.WIDTH(pt.ICACHE_INDEX_HI-pt.ICACHE_TAG_INDEX_LO+1),.OVERRIDE(1)) ic_addr_index (.*, .en(write_bypass_en[l]), .din (ic_b_rw_addr), .dout(wb_index_hold[l])); \
rvdffe #(``width) rd_data_hold_ff (.*, .en(write_bypass_en_ff[l]), .din (ic_tag_data_raw_packed_pre[``width-1:0]), .dout(wb_packeddout_hold[l])); \
\
end // block: BYPASS \
\
always_comb begin \
any_bypass = '0; \
sel_bypass_data = '0; \
\
for (int l=0; l<pt.ICACHE_TAG_NUM_BYPASS; l++) begin \
any_bypass |= sel_bypass_ff[l]; \
sel_bypass_data |= (sel_bypass_ff[l]) ? wb_packeddout_hold[l] : '0; \
end \
\
ic_tag_data_raw_packed = any_bypass ? sel_bypass_data : ic_tag_data_raw_packed_pre ; \
end // always_comb begin \
\
end // if (pt.ICACHE_BYPASS_ENABLE == 1) \
else begin \
assign ic_tag_data_raw_packed = ic_tag_data_raw_packed_pre ; \
assign ic_tag_clken_final = |ic_tag_clken; \
end
Initial checkin.
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if (pt.ICACHE_ECC) begin : ECC1
Branch 1.3
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logic [(26*pt.ICACHE_NUM_WAYS)-1 :0] ic_tag_data_raw_packed, ic_tag_wren_biten_vec, ic_tag_data_raw_packed_pre; // data and its bit enables
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0][(26*pt.ICACHE_NUM_WAYS)-1 :0] wb_packeddout_hold;
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: BITEN
assign ic_tag_wren_biten_vec[(26*i)+25:26*i] = {26{ic_tag_wren_q[i]}};
end
Initial checkin.
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if (pt.ICACHE_TAG_DEPTH == 32) begin : size_32
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(32,104)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(32,52)
Initial checkin.
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end // block: WAYS
end // if (pt.ICACHE_TAG_DEPTH == 32
if (pt.ICACHE_TAG_DEPTH == 64) begin : size_64
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(64,104)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(64,52)
Initial checkin.
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end // block: WAYS
end // block: size_64
if (pt.ICACHE_TAG_DEPTH == 128) begin : size_128
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(128,104)
end // block: WAYS
Initial checkin.
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else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(128,52)
end // block: WAYS
Initial checkin.
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end // block: size_128
if (pt.ICACHE_TAG_DEPTH == 256) begin : size_256
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(256,104)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(256,52)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_256
if (pt.ICACHE_TAG_DEPTH == 512) begin : size_512
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(512,104)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(512,52)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_512
if (pt.ICACHE_TAG_DEPTH == 1024) begin : size_1024
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(1024,104)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(1024,52)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_1024
if (pt.ICACHE_TAG_DEPTH == 2048) begin : size_2048
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(2048,104)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(2048,52)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_2048
if (pt.ICACHE_TAG_DEPTH == 4096) begin : size_4096
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(4096,104)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(4096,52)
Initial checkin.
2020-01-23 06:22:50 +08:00
end // block: WAYS
end // block: size_4096
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin
assign ic_tag_data_raw[i] = ic_tag_data_raw_packed[(26*i)+25:26*i];
assign w_tout[i][31:pt.ICACHE_TAG_LO] = ic_tag_data_raw[i][31-pt.ICACHE_TAG_LO:0] ;
assign w_tout[i][36:32] = ic_tag_data_raw[i][25:21] ;
rvecc_decode ecc_decode (
.en(~dec_tlu_core_ecc_disable & ic_rd_en_ff),
.sed_ded ( 1'b1 ), // 1 : means only detection
.din({11'b0,ic_tag_data_raw[i][20:0]}),
.ecc_in({2'b0, ic_tag_data_raw[i][25:21]}),
.dout(ic_tag_corrected_data_unc[i][31:0]),
.ecc_out(ic_tag_corrected_ecc_unc[i][6:0]),
.single_ecc_error(ic_tag_single_ecc_error[i]),
.double_ecc_error(ic_tag_double_ecc_error[i]));
assign ic_tag_way_perr[i]= ic_tag_single_ecc_error[i] | ic_tag_double_ecc_error[i] ;
end // for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++)
end // block: ECC1
else begin : ECC0
Branch 1.3
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logic [(22*pt.ICACHE_NUM_WAYS)-1 :0] ic_tag_data_raw_packed, ic_tag_wren_biten_vec, ic_tag_data_raw_packed_pre; // data and its bit enables
logic [pt.ICACHE_TAG_NUM_BYPASS-1:0][(22*pt.ICACHE_NUM_WAYS)-1 :0] wb_packeddout_hold;
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin: BITEN
assign ic_tag_wren_biten_vec[(22*i)+21:22*i] = {22{ic_tag_wren_q[i]}};
end
Initial checkin.
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if (pt.ICACHE_TAG_DEPTH == 32) begin : size_32
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(32,88)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(32,44)
Initial checkin.
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end // block: WAYS
end // if (pt.ICACHE_TAG_DEPTH == 32
if (pt.ICACHE_TAG_DEPTH == 64) begin : size_64
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(64,88)
Initial checkin.
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end // block: WAYS
else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(64,44)
Initial checkin.
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end // block: WAYS
end // block: size_64
if (pt.ICACHE_TAG_DEPTH == 128) begin : size_128
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(128,88)
end // block: WAYS
Initial checkin.
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else begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(128,44)
end // block: WAYS
Initial checkin.
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end // block: size_128
if (pt.ICACHE_TAG_DEPTH == 256) begin : size_256
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(256,88)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(256,44)
Initial checkin.
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end // block: WAYS
end // block: size_256
if (pt.ICACHE_TAG_DEPTH == 512) begin : size_512
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(512,88)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(512,44)
Initial checkin.
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end // block: WAYS
end // block: size_512
if (pt.ICACHE_TAG_DEPTH == 1024) begin : size_1024
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(1024,88)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(1024,44)
Initial checkin.
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end // block: WAYS
end // block: size_1024
if (pt.ICACHE_TAG_DEPTH == 2048) begin : size_2048
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(2048,88)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(2048,44)
Initial checkin.
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end // block: WAYS
end // block: size_2048
if (pt.ICACHE_TAG_DEPTH == 4096) begin : size_4096
if (pt.ICACHE_NUM_WAYS == 4) begin : WAYS
Branch 1.3
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`EL2_IC_TAG_PACKED_SRAM(4096,88)
Initial checkin.
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end // block: WAYS
Branch 1.3
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else begin : WAYS
`EL2_IC_TAG_PACKED_SRAM(4096,44)
Initial checkin.
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end // block: WAYS
end // block: size_4096
for (genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin
assign ic_tag_data_raw[i] = ic_tag_data_raw_packed[(22*i)+21:22*i];
assign w_tout[i][31:pt.ICACHE_TAG_LO] = ic_tag_data_raw[i][31-pt.ICACHE_TAG_LO:0] ;
assign w_tout[i][32] = ic_tag_data_raw[i][21] ;
Branch 1.3
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assign w_tout[i][36:33] = '0 ;
Initial checkin.
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rveven_paritycheck #(32-pt.ICACHE_TAG_LO) parcheck(.data_in (w_tout[i][31:pt.ICACHE_TAG_LO]),
.parity_in (w_tout[i][32]),
.parity_err(ic_tag_way_perr[i]));
end
end // block: ECC0
end // block: PACKED_1
always_comb begin : tag_rd_out
ictag_debug_rd_data[25:0] = '0;
for ( int j=0; j<pt.ICACHE_NUM_WAYS; j++) begin: debug_rd_out
ictag_debug_rd_data[25:0] |= pt.ICACHE_ECC ? ({26{ic_debug_rd_way_en_ff[j]}} & ic_tag_data_raw[j] ) : {4'b0, ({22{ic_debug_rd_way_en_ff[j]}} & ic_tag_data_raw[j][21:0])};
end
end
Branch 1.3
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for ( genvar i=0; i<pt.ICACHE_NUM_WAYS; i++) begin : ic_rd_hit_loop
Initial checkin.
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assign ic_rd_hit[i] = (w_tout[i][31:pt.ICACHE_TAG_LO] == ic_rw_addr_ff[31:pt.ICACHE_TAG_LO]) & ic_tag_valid[i];
end
assign ic_tag_perr = | (ic_tag_way_perr[pt.ICACHE_NUM_WAYS-1:0] & ic_tag_valid[pt.ICACHE_NUM_WAYS-1:0] ) ;
endmodule // EL2_IC_TAG