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RTL code refactoring

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This commit is contained in:
Blaise Tine
2020-04-20 12:09:30 -04:00
parent e8072bab77
commit e8a4923eb4
53 changed files with 79 additions and 1988 deletions
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137
hw/rtl/cache/VX_cache_wb_sel_merge.v vendored Normal file
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`include "VX_cache_config.vh"
module VX_cache_wb_sel_merge #(
// Size of cache in bytes
parameter CACHE_SIZE_BYTES = 1024,
// Size of line inside a bank in bytes
parameter BANK_LINE_SIZE_BYTES = 16,
// Number of banks {1, 2, 4, 8,...}
parameter NUM_BANKS = 8,
// Size of a word in bytes
parameter WORD_SIZE_BYTES = 4,
// Number of Word requests per cycle {1, 2, 4, 8, ...}
parameter NUM_REQUESTS = 2,
// Number of cycles to complete stage 1 (read from memory)
parameter STAGE_1_CYCLES = 2,
// Function ID, {Dcache=0, Icache=1, Sharedmemory=2}
parameter FUNC_ID = 0,
// Queues feeding into banks Knobs {1, 2, 4, 8, ...}
// Core Request Queue Size
parameter REQQ_SIZE = 8,
// Miss Reserv Queue Knob
parameter MRVQ_SIZE = 8,
// Dram Fill Rsp Queue Size
parameter DFPQ_SIZE = 2,
// Snoop Req Queue
parameter SNRQ_SIZE = 8,
// Queues for writebacks Knobs {1, 2, 4, 8, ...}
// Core Writeback Queue Size
parameter CWBQ_SIZE = 8,
// Dram Writeback Queue Size
parameter DWBQ_SIZE = 4,
// Dram Fill Req Queue Size
parameter DFQQ_SIZE = 8,
// Lower Level Cache Hit Queue Size
parameter LLVQ_SIZE = 16,
// Fill Invalidator Size {Fill invalidator must be active}
parameter FILL_INVALIDAOR_SIZE = 16,
// Dram knobs
parameter SIMULATED_DRAM_LATENCY_CYCLES = 10
) (
// Per Bank WB
input wire [NUM_BANKS-1:0] per_bank_wb_valid,
input wire [NUM_BANKS-1:0][`LOG2UP(NUM_REQUESTS)-1:0] per_bank_wb_tid,
input wire [NUM_BANKS-1:0][4:0] per_bank_wb_rd,
input wire [NUM_BANKS-1:0][1:0] per_bank_wb_wb,
input wire [NUM_BANKS-1:0][`NW_BITS-1:0] per_bank_wb_warp_num,
input wire [NUM_BANKS-1:0][`WORD_SIZE_RNG] per_bank_wb_data,
input wire [NUM_BANKS-1:0][31:0] per_bank_wb_pc,
input wire [NUM_BANKS-1:0][31:0] per_bank_wb_addr,
output wire [NUM_BANKS-1:0] per_bank_wb_pop,
// Core Writeback
input wire core_rsp_ready,
output reg [NUM_REQUESTS-1:0] core_rsp_valid,
output reg [NUM_REQUESTS-1:0][`WORD_SIZE_RNG] core_rsp_data,
output reg [NUM_REQUESTS-1:0][31:0] core_rsp_pc,
output wire [4:0] core_rsp_read,
output wire [1:0] core_rsp_write,
output wire [`NW_BITS-1:0] core_rsp_warp_num,
output reg [NUM_REQUESTS-1:0][31:0] core_rsp_addr
);
reg [NUM_BANKS-1:0] per_bank_wb_pop_unqual;
assign per_bank_wb_pop = per_bank_wb_pop_unqual & {NUM_BANKS{core_rsp_ready}};
// wire[NUM_BANKS-1:0] bank_wants_wb;
// genvar curr_bank;
// generate
// for (curr_bank = 0; curr_bank < NUM_BANKS; curr_bank=curr_bank+1) begin
// assign bank_wants_wb[curr_bank] = (|per_bank_wb_valid[curr_bank]);
// end
// endgenerate
wire [`LOG2UP(NUM_BANKS)-1:0] main_bank_index;
wire found_bank;
VX_generic_priority_encoder #(
.N(NUM_BANKS)
) sel_bank (
.valids(per_bank_wb_valid),
.index (main_bank_index),
.found (found_bank)
);
assign core_rsp_read = per_bank_wb_rd[main_bank_index];
assign core_rsp_write = per_bank_wb_wb[main_bank_index];
assign core_rsp_warp_num = per_bank_wb_warp_num[main_bank_index];
integer this_bank;
generate
always @(*) begin
core_rsp_valid = 0;
core_rsp_data = 0;
core_rsp_pc = 0;
core_rsp_addr = 0;
for (this_bank = 0; this_bank < NUM_BANKS; this_bank = this_bank + 1) begin
if ((FUNC_ID == `L2FUNC_ID) || (FUNC_ID == `L3FUNC_ID)) begin
if (found_bank
&& !core_rsp_valid[per_bank_wb_tid[this_bank]]
&& per_bank_wb_valid[this_bank]
&& ((main_bank_index == `LOG2UP(NUM_BANKS)'(this_bank))
|| (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index]))) begin
core_rsp_valid[per_bank_wb_tid[this_bank]] = 1;
core_rsp_data[per_bank_wb_tid[this_bank]] = per_bank_wb_data[this_bank];
core_rsp_pc[per_bank_wb_tid[this_bank]] = per_bank_wb_pc[this_bank];
core_rsp_addr[per_bank_wb_tid[this_bank]] = per_bank_wb_addr[this_bank];
per_bank_wb_pop_unqual[this_bank] = 1;
end else begin
per_bank_wb_pop_unqual[this_bank] = 0;
end
end else begin
if (((main_bank_index == `LOG2UP(NUM_BANKS)'(this_bank))
|| (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index]))
&& found_bank
&& !core_rsp_valid[per_bank_wb_tid[this_bank]]
&& (per_bank_wb_valid[this_bank])
&& (per_bank_wb_rd[this_bank] == per_bank_wb_rd[main_bank_index])
&& (per_bank_wb_warp_num[this_bank] == per_bank_wb_warp_num[main_bank_index])) begin
core_rsp_valid[per_bank_wb_tid[this_bank]] = 1;
core_rsp_data[per_bank_wb_tid[this_bank]] = per_bank_wb_data[this_bank];
core_rsp_pc[per_bank_wb_tid[this_bank]] = per_bank_wb_pc[this_bank];
core_rsp_addr[per_bank_wb_tid[this_bank]] = per_bank_wb_addr[this_bank];
per_bank_wb_pop_unqual[this_bank] = 1;
end else begin
per_bank_wb_pop_unqual[this_bank] = 0;
end
end
end
end
endgenerate
endmodule