`include "VX_cache_config.vh" module VX_cache #( parameter CACHE_ID = 0, // Size of cache in bytes parameter CACHE_SIZE = 8092, // Size of line inside a bank in bytes parameter BANK_LINE_SIZE = 64, // Number of banks parameter NUM_BANKS = 4, // Size of a word in bytes parameter WORD_SIZE = 4, // Number of Word requests per cycle parameter NUM_REQS = 4, // Core Request Queue Size parameter CREQ_SIZE = 4, // Miss Reserv Queue Knob parameter MSHR_SIZE = 8, // DRAM Response Queue Size parameter DRFQ_SIZE = 4, // Snoop Req Queue Size parameter SNRQ_SIZE = 4, // Core Writeback Queue Size parameter CWBQ_SIZE = 4, // DRAM Request Queue Size parameter DREQ_SIZE = 4, // Snoop Response Size parameter SNPQ_SIZE = 4, // Enable cache writeable parameter WRITE_ENABLE = 1, // Enable dram update parameter DRAM_ENABLE = 1, // Enable cache flush parameter FLUSH_ENABLE = 1, // core request tag size parameter CORE_TAG_WIDTH = 4, // size of tag id in core request tag parameter CORE_TAG_ID_BITS = 0, // dram request tag size parameter DRAM_TAG_WIDTH = 28, // Snooping request tag width parameter SNP_TAG_WIDTH = 1 ) ( `SCOPE_IO_VX_cache input wire clk, input wire reset, // Core request input wire [NUM_REQS-1:0] core_req_valid, input wire [`CORE_REQ_TAG_COUNT-1:0] core_req_rw, input wire [NUM_REQS-1:0][WORD_SIZE-1:0] core_req_byteen, input wire [NUM_REQS-1:0][`WORD_ADDR_WIDTH-1:0] core_req_addr, input wire [NUM_REQS-1:0][`WORD_WIDTH-1:0] core_req_data, input wire [`CORE_REQ_TAG_COUNT-1:0][CORE_TAG_WIDTH-1:0] core_req_tag, output wire core_req_ready, // Core response output wire [NUM_REQS-1:0] core_rsp_valid, output wire [NUM_REQS-1:0][`WORD_WIDTH-1:0] core_rsp_data, output wire [`CORE_REQ_TAG_COUNT-1:0][CORE_TAG_WIDTH-1:0] core_rsp_tag, input wire core_rsp_ready, // DRAM request output wire dram_req_valid, output wire dram_req_rw, output wire [BANK_LINE_SIZE-1:0] dram_req_byteen, output wire [`DRAM_ADDR_WIDTH-1:0] dram_req_addr, output wire [`BANK_LINE_WIDTH-1:0] dram_req_data, output wire [DRAM_TAG_WIDTH-1:0] dram_req_tag, input wire dram_req_ready, // DRAM response input wire dram_rsp_valid, input wire [`BANK_LINE_WIDTH-1:0] dram_rsp_data, input wire [DRAM_TAG_WIDTH-1:0] dram_rsp_tag, output wire dram_rsp_ready, // Snoop request input wire snp_req_valid, input wire [`DRAM_ADDR_WIDTH-1:0] snp_req_addr, input wire snp_req_inv, input wire [SNP_TAG_WIDTH-1:0] snp_req_tag, output wire snp_req_ready, // Snoop response output wire snp_rsp_valid, output wire [SNP_TAG_WIDTH-1:0] snp_rsp_tag, input wire snp_rsp_ready, output wire [NUM_BANKS-1:0] miss_vec ); `STATIC_ASSERT(NUM_BANKS <= NUM_REQS, ("invalid value")) wire [NUM_BANKS-1:0][NUM_REQS-1:0] per_bank_valid; wire [NUM_BANKS-1:0] per_bank_core_req_ready; wire [NUM_BANKS-1:0] per_bank_core_rsp_valid; wire [NUM_BANKS-1:0][`REQS_BITS-1:0] per_bank_core_rsp_tid; wire [NUM_BANKS-1:0][`WORD_WIDTH-1:0] per_bank_core_rsp_data; wire [NUM_BANKS-1:0][CORE_TAG_WIDTH-1:0] per_bank_core_rsp_tag; wire [NUM_BANKS-1:0] per_bank_core_rsp_ready; wire [NUM_BANKS-1:0] per_bank_dram_req_valid; wire [NUM_BANKS-1:0] per_bank_dram_req_rw; wire [NUM_BANKS-1:0][BANK_LINE_SIZE-1:0] per_bank_dram_req_byteen; wire [NUM_BANKS-1:0][`DRAM_ADDR_WIDTH-1:0] per_bank_dram_req_addr; wire [NUM_BANKS-1:0][`BANK_LINE_WIDTH-1:0] per_bank_dram_req_data; wire [NUM_BANKS-1:0] per_bank_dram_req_ready; wire [NUM_BANKS-1:0] per_bank_dram_rsp_ready; wire [NUM_BANKS-1:0] per_bank_snp_req_ready; wire [NUM_BANKS-1:0] per_bank_snp_rsp_valid; wire [NUM_BANKS-1:0][SNP_TAG_WIDTH-1:0] per_bank_snp_rsp_tag; wire [NUM_BANKS-1:0] per_bank_snp_rsp_ready; wire [NUM_BANKS-1:0] per_bank_miss; assign miss_vec = per_bank_miss; if (NUM_BANKS == 1) begin assign snp_req_ready = per_bank_snp_req_ready; end else begin assign snp_req_ready = per_bank_snp_req_ready[`DRAM_ADDR_BANK(snp_req_addr)]; end VX_cache_core_req_bank_sel #( .BANK_LINE_SIZE (BANK_LINE_SIZE), .NUM_BANKS (NUM_BANKS), .WORD_SIZE (WORD_SIZE), .NUM_REQS (NUM_REQS) ) cache_core_req_bank_sel ( .core_req_valid (core_req_valid), .core_req_addr (core_req_addr), .core_req_ready (core_req_ready), .per_bank_valid (per_bank_valid), .per_bank_ready (per_bank_core_req_ready) ); assign dram_req_tag = dram_req_addr; if (NUM_BANKS == 1) begin assign dram_rsp_ready = per_bank_dram_rsp_ready; end else begin assign dram_rsp_ready = per_bank_dram_rsp_ready[`DRAM_ADDR_BANK(dram_rsp_tag)]; end for (genvar i = 0; i < NUM_BANKS; i++) begin wire [NUM_REQS-1:0] curr_bank_core_req_valid; wire [`CORE_REQ_TAG_COUNT-1:0] curr_bank_core_req_rw; wire [NUM_REQS-1:0][WORD_SIZE-1:0] curr_bank_core_req_byteen; wire [NUM_REQS-1:0][`WORD_ADDR_WIDTH-1:0] curr_bank_core_req_addr; wire [`CORE_REQ_TAG_COUNT-1:0][CORE_TAG_WIDTH-1:0] curr_bank_core_req_tag; wire [NUM_REQS-1:0][`WORD_WIDTH-1:0] curr_bank_core_req_data; wire curr_bank_core_req_ready; wire curr_bank_core_rsp_valid; wire [`REQS_BITS-1:0] curr_bank_core_rsp_tid; wire [`WORD_WIDTH-1:0] curr_bank_core_rsp_data; wire [CORE_TAG_WIDTH-1:0] curr_bank_core_rsp_tag; wire curr_bank_core_rsp_ready; wire curr_bank_dram_req_valid; wire curr_bank_dram_req_rw; wire [BANK_LINE_SIZE-1:0] curr_bank_dram_req_byteen; wire [`LINE_ADDR_WIDTH-1:0] curr_bank_dram_req_addr; wire[`BANK_LINE_WIDTH-1:0] curr_bank_dram_req_data; wire curr_bank_dram_req_ready; wire curr_bank_dram_rsp_valid; wire [`BANK_LINE_WIDTH-1:0] curr_bank_dram_rsp_data; wire [`LINE_ADDR_WIDTH-1:0] curr_bank_dram_rsp_addr; wire curr_bank_dram_rsp_ready; wire curr_bank_snp_req_valid; wire [`LINE_ADDR_WIDTH-1:0] curr_bank_snp_req_addr; wire curr_bank_snp_req_inv; wire [SNP_TAG_WIDTH-1:0] curr_bank_snp_req_tag; wire curr_bank_snp_req_ready; wire curr_bank_snp_rsp_valid; wire [SNP_TAG_WIDTH-1:0] curr_bank_snp_rsp_tag; wire curr_bank_snp_rsp_ready; wire curr_bank_miss; // Core Req assign curr_bank_core_req_valid = (per_bank_valid[i] & {NUM_REQS{core_req_ready}}); assign curr_bank_core_req_addr = core_req_addr; assign curr_bank_core_req_rw = core_req_rw; assign curr_bank_core_req_byteen = core_req_byteen; assign curr_bank_core_req_data = core_req_data; assign curr_bank_core_req_tag = core_req_tag; assign per_bank_core_req_ready[i] = curr_bank_core_req_ready; // Core WB assign curr_bank_core_rsp_ready = per_bank_core_rsp_ready[i]; assign per_bank_core_rsp_valid [i] = curr_bank_core_rsp_valid; assign per_bank_core_rsp_tid [i] = curr_bank_core_rsp_tid; assign per_bank_core_rsp_tag [i] = curr_bank_core_rsp_tag; assign per_bank_core_rsp_data [i] = curr_bank_core_rsp_data; // DRAM request assign per_bank_dram_req_valid[i] = curr_bank_dram_req_valid; assign per_bank_dram_req_rw[i] = curr_bank_dram_req_rw; assign per_bank_dram_req_byteen[i] = curr_bank_dram_req_byteen; if (NUM_BANKS == 1) begin assign per_bank_dram_req_addr[i] = curr_bank_dram_req_addr; end else begin assign per_bank_dram_req_addr[i] = `LINE_TO_DRAM_ADDR(curr_bank_dram_req_addr, i); end assign per_bank_dram_req_data[i] = curr_bank_dram_req_data; assign curr_bank_dram_req_ready = per_bank_dram_req_ready[i]; // DRAM response if (NUM_BANKS == 1) begin assign curr_bank_dram_rsp_valid = dram_rsp_valid; assign curr_bank_dram_rsp_addr = dram_rsp_tag; end else begin assign curr_bank_dram_rsp_valid = dram_rsp_valid && (`DRAM_ADDR_BANK(dram_rsp_tag) == i); assign curr_bank_dram_rsp_addr = `DRAM_TO_LINE_ADDR(dram_rsp_tag); end assign curr_bank_dram_rsp_data = dram_rsp_data; assign per_bank_dram_rsp_ready[i] = curr_bank_dram_rsp_ready; // Snoop request if (NUM_BANKS == 1) begin assign curr_bank_snp_req_valid = snp_req_valid; assign curr_bank_snp_req_addr = snp_req_addr; end else begin assign curr_bank_snp_req_valid = snp_req_valid && (`DRAM_ADDR_BANK(snp_req_addr) == i); assign curr_bank_snp_req_addr = `DRAM_TO_LINE_ADDR(snp_req_addr); end assign curr_bank_snp_req_inv = snp_req_inv; assign curr_bank_snp_req_tag = snp_req_tag; assign per_bank_snp_req_ready[i] = curr_bank_snp_req_ready; // Snoop response assign per_bank_snp_rsp_valid[i] = curr_bank_snp_rsp_valid; assign per_bank_snp_rsp_tag[i] = curr_bank_snp_rsp_tag; assign curr_bank_snp_rsp_ready = per_bank_snp_rsp_ready[i]; //Misses assign per_bank_miss[i] = curr_bank_miss; VX_bank #( .BANK_ID (i), .CACHE_ID (CACHE_ID), .CACHE_SIZE (CACHE_SIZE), .BANK_LINE_SIZE (BANK_LINE_SIZE), .NUM_BANKS (NUM_BANKS), .WORD_SIZE (WORD_SIZE), .NUM_REQS (NUM_REQS), .CREQ_SIZE (CREQ_SIZE), .MSHR_SIZE (MSHR_SIZE), .DRFQ_SIZE (DRFQ_SIZE), .SNRQ_SIZE (SNRQ_SIZE), .CWBQ_SIZE (CWBQ_SIZE), .DREQ_SIZE (DREQ_SIZE), .SNPQ_SIZE (SNPQ_SIZE), .DRAM_ENABLE (DRAM_ENABLE), .FLUSH_ENABLE (FLUSH_ENABLE), .WRITE_ENABLE (WRITE_ENABLE), .CORE_TAG_WIDTH (CORE_TAG_WIDTH), .CORE_TAG_ID_BITS (CORE_TAG_ID_BITS), .SNP_TAG_WIDTH (SNP_TAG_WIDTH) ) bank ( `SCOPE_BIND_VX_cache_bank(i) .clk (clk), .reset (reset), // Core request .core_req_valid (curr_bank_core_req_valid), .core_req_rw (curr_bank_core_req_rw), .core_req_byteen (curr_bank_core_req_byteen), .core_req_addr (curr_bank_core_req_addr), .core_req_data (curr_bank_core_req_data), .core_req_tag (curr_bank_core_req_tag), .core_req_ready (curr_bank_core_req_ready), // Core response .core_rsp_valid (curr_bank_core_rsp_valid), .core_rsp_tid (curr_bank_core_rsp_tid), .core_rsp_data (curr_bank_core_rsp_data), .core_rsp_tag (curr_bank_core_rsp_tag), .core_rsp_ready (curr_bank_core_rsp_ready), // DRAM request .dram_req_valid (curr_bank_dram_req_valid), .dram_req_rw (curr_bank_dram_req_rw), .dram_req_byteen (curr_bank_dram_req_byteen), .dram_req_addr (curr_bank_dram_req_addr), .dram_req_data (curr_bank_dram_req_data), .dram_req_ready (curr_bank_dram_req_ready), // DRAM response .dram_rsp_valid (curr_bank_dram_rsp_valid), .dram_rsp_data (curr_bank_dram_rsp_data), .dram_rsp_addr (curr_bank_dram_rsp_addr), .dram_rsp_ready (curr_bank_dram_rsp_ready), // Snoop request .snp_req_valid (curr_bank_snp_req_valid), .snp_req_addr (curr_bank_snp_req_addr), .snp_req_inv (curr_bank_snp_req_inv), .snp_req_tag (curr_bank_snp_req_tag), .snp_req_ready (curr_bank_snp_req_ready), // Snoop response .snp_rsp_valid (curr_bank_snp_rsp_valid), .snp_rsp_tag (curr_bank_snp_rsp_tag), .snp_rsp_ready (curr_bank_snp_rsp_ready), //Misses .misses (curr_bank_miss) ); end VX_cache_core_rsp_merge #( .NUM_BANKS (NUM_BANKS), .WORD_SIZE (WORD_SIZE), .NUM_REQS (NUM_REQS), .CORE_TAG_WIDTH (CORE_TAG_WIDTH), .CORE_TAG_ID_BITS (CORE_TAG_ID_BITS) ) cache_core_rsp_merge ( .clk (clk), .reset (reset), .per_bank_core_rsp_valid (per_bank_core_rsp_valid), .per_bank_core_rsp_tag (per_bank_core_rsp_tag), .per_bank_core_rsp_tid (per_bank_core_rsp_tid), .per_bank_core_rsp_data (per_bank_core_rsp_data), .per_bank_core_rsp_ready (per_bank_core_rsp_ready), .core_rsp_valid (core_rsp_valid), .core_rsp_tag (core_rsp_tag), .core_rsp_data (core_rsp_data), .core_rsp_ready (core_rsp_ready) ); if (DRAM_ENABLE) begin wire [NUM_BANKS-1:0][(`DRAM_ADDR_WIDTH + 1 + BANK_LINE_SIZE + `BANK_LINE_WIDTH)-1:0] data_in; for (genvar i = 0; i < NUM_BANKS; i++) begin assign data_in[i] = {per_bank_dram_req_addr[i], per_bank_dram_req_rw[i], per_bank_dram_req_byteen[i], per_bank_dram_req_data[i]}; end VX_stream_arbiter #( .NUM_REQS(NUM_BANKS), .DATAW(`DRAM_ADDR_WIDTH + 1 + BANK_LINE_SIZE + `BANK_LINE_WIDTH), .BUFFERED(NUM_BANKS >= 4) ) dram_req_arb ( .clk (clk), .reset (reset), .valid_in (per_bank_dram_req_valid), .valid_out (dram_req_valid), .data_in (data_in), .data_out ({dram_req_addr, dram_req_rw, dram_req_byteen, dram_req_data}), .ready_in (per_bank_dram_req_ready), .ready_out (dram_req_ready) ); end else begin `UNUSED_VAR (per_bank_dram_req_valid) `UNUSED_VAR (per_bank_dram_req_rw) `UNUSED_VAR (per_bank_dram_req_byteen) `UNUSED_VAR (per_bank_dram_req_addr) `UNUSED_VAR (per_bank_dram_req_data) assign per_bank_dram_req_ready = 0; assign dram_req_valid = 0; assign dram_req_rw = 0; assign dram_req_byteen = 0; assign dram_req_addr = 0; assign dram_req_data = 0; `UNUSED_VAR (dram_req_ready) end if (FLUSH_ENABLE) begin VX_stream_arbiter #( .NUM_REQS(NUM_BANKS), .DATAW(SNP_TAG_WIDTH), .BUFFERED(NUM_BANKS >= 4) ) snp_rsp_arb ( .clk (clk), .reset (reset), .valid_in (per_bank_snp_rsp_valid), .valid_out (snp_rsp_valid), .data_in (per_bank_snp_rsp_tag), .data_out (snp_rsp_tag), .ready_in (per_bank_snp_rsp_ready), .ready_out (snp_rsp_ready) ); end else begin `UNUSED_VAR (per_bank_snp_rsp_valid) `UNUSED_VAR (per_bank_snp_rsp_tag) assign per_bank_snp_rsp_ready = 0; assign snp_rsp_valid = 0; assign snp_rsp_tag = 0; `UNUSED_VAR (snp_rsp_ready) end endmodule