// SPDX-License-Identifier: Apache-2.0 // Copyright 2020 Western Digital Corporation or its affiliates. // // 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. //******************************************************************************** // $Id$ // // // Owner: // Function: DCCM for LSU pipe // Comments: Single ported memory // // // DC1 -> DC2 -> DC3 -> DC4 (Commit) // // //******************************************************************************** `define LOCAL_DCCM_RAM_TEST_PORTS .TEST1(dccm_ext_in_pkt[i].TEST1), \ .RME(dccm_ext_in_pkt[i].RME), \ .RM(dccm_ext_in_pkt[i].RM), \ .LS(dccm_ext_in_pkt[i].LS), \ .DS(dccm_ext_in_pkt[i].DS), \ .SD(dccm_ext_in_pkt[i].SD), \ .TEST_RNM(dccm_ext_in_pkt[i].TEST_RNM), \ .BC1(dccm_ext_in_pkt[i].BC1), \ .BC2(dccm_ext_in_pkt[i].BC2), \ module lsu_dccm_mem `include "parameter.sv" //#( // parameter DCCM_BYTE_WIDTH, // parameter DCCM_BITS, // parameter DCCM_NUM_BANKS, // parameter DCCM_ENABLE= 'b1, // parameter DCCM_BANK_BITS, // parameter DCCM_SIZE, // parameter DCCM_FDATA_WIDTH, // parameter DCCM_WIDTH_BITS //) ( 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 dccm_wren, // write enable input logic dccm_rden, // read enable input logic [DCCM_BITS-1:0] dccm_wr_addr_lo, // write address input logic [DCCM_BITS-1:0] dccm_wr_addr_hi, // write address input logic [DCCM_BITS-1:0] dccm_rd_addr_lo, // read address input logic [DCCM_BITS-1:0] dccm_rd_addr_hi, // read address for the upper bank in case of a misaligned access input logic [DCCM_FDATA_WIDTH-1:0] dccm_wr_data_lo, // write data input logic [DCCM_FDATA_WIDTH-1:0] dccm_wr_data_hi, // write data input dccm_ext_in_pkt_t [DCCM_NUM_BANKS-1:0] dccm_ext_in_pkt, // the dccm packet from the soc output logic [DCCM_FDATA_WIDTH-1:0] dccm_rd_data_lo, // read data from the lo bank output logic [DCCM_FDATA_WIDTH-1:0] dccm_rd_data_hi, // read data from the hi bank input logic scan_mode ); //localparam DCCM_WIDTH_BITS = $clog2(DCCM_BYTE_WIDTH); localparam DCCM_INDEX_BITS = (DCCM_BITS - DCCM_BANK_BITS - DCCM_WIDTH_BITS); localparam DCCM_INDEX_DEPTH = ((DCCM_SIZE)*1024)/((DCCM_BYTE_WIDTH)*(DCCM_NUM_BANKS)); // Depth of memory bank logic [DCCM_NUM_BANKS-1:0] wren_bank; logic [DCCM_NUM_BANKS-1:0] rden_bank; logic [DCCM_NUM_BANKS-1:0] [DCCM_BITS-1:(DCCM_BANK_BITS+2)] addr_bank; logic [DCCM_BITS-1:(DCCM_BANK_BITS+DCCM_WIDTH_BITS)] rd_addr_even, rd_addr_odd; logic rd_unaligned, wr_unaligned; logic [DCCM_NUM_BANKS-1:0] [DCCM_FDATA_WIDTH-1:0] dccm_bank_dout; logic [DCCM_FDATA_WIDTH-1:0] wrdata; logic [DCCM_NUM_BANKS-1:0][DCCM_FDATA_WIDTH-1:0] wr_data_bank; logic [(DCCM_WIDTH_BITS+DCCM_BANK_BITS-1):DCCM_WIDTH_BITS] dccm_rd_addr_lo_q; logic [(DCCM_WIDTH_BITS+DCCM_BANK_BITS-1):DCCM_WIDTH_BITS] dccm_rd_addr_hi_q; logic [DCCM_NUM_BANKS-1:0] dccm_clken; assign rd_unaligned = (dccm_rd_addr_lo[DCCM_WIDTH_BITS+:DCCM_BANK_BITS] != dccm_rd_addr_hi[DCCM_WIDTH_BITS+:DCCM_BANK_BITS]); assign wr_unaligned = (dccm_wr_addr_lo[DCCM_WIDTH_BITS+:DCCM_BANK_BITS] != dccm_wr_addr_hi[DCCM_WIDTH_BITS+:DCCM_BANK_BITS]); // Align the read data assign dccm_rd_data_lo[DCCM_FDATA_WIDTH-1:0] = dccm_bank_dout[dccm_rd_addr_lo_q[DCCM_WIDTH_BITS+:DCCM_BANK_BITS]][DCCM_FDATA_WIDTH-1:0]; assign dccm_rd_data_hi[DCCM_FDATA_WIDTH-1:0] = dccm_bank_dout[dccm_rd_addr_hi_q[DCCM_WIDTH_BITS+:DCCM_BANK_BITS]][DCCM_FDATA_WIDTH-1:0]; // 8 Banks, 16KB each (2048 x 72) for (genvar i=0; i