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Added Snoop Invalidate/Writeback Req type

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This commit is contained in:
felsabbagh3
2020-03-05 01:30:16 -08:00
parent e0620a6f6a
commit 457e8644f3
9 changed files with 151 additions and 33 deletions
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74
rtl/VX_cache/VX_bank.v
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@@ -28,6 +28,8 @@ module VX_bank (
// Dram Fill Requests
output wire dram_fill_req,
output wire[31:0] dram_fill_req_addr,
output wire dram_because_of_snp,
output wire dram_snp_full,
input wire dram_fill_req_queue_full,
// Dram Fill Response
@@ -40,10 +42,37 @@ module VX_bank (
input wire dram_wb_queue_pop,
output wire dram_wb_req,
output wire[31:0] dram_wb_req_addr,
output wire[`BANK_LINE_SIZE_RNG][31:0] dram_wb_req_data
output wire[`BANK_LINE_SIZE_RNG][31:0] dram_wb_req_data,
// Snp Request
input wire snp_req,
input wire[31:0] snp_req_addr
);
wire snrq_pop;
wire snrq_empty;
wire snrq_full;
wire snrq_valid_st0;
wire[31:0] snrq_addr_st0;
reg snrq_hazard_st0;
assign snrq_valid_st0 = !snrq_empty;
VX_generic_queue #(.DATAW(32), .SIZE(`SNRQ_SIZE)) snr_queue(
.clk (clk),
.reset (reset),
.push (snp_req),
.in_data (snp_req_addr),
.pop (snrq_pop),
.out_data(snrq_addr_st0),
.empty (snrq_empty),
.full (snrq_full)
);
wire dfpq_pop;
wire dfpq_empty;
wire dfpq_full;
@@ -171,6 +200,7 @@ module VX_bank (
assign dfpq_pop = !dfpq_empty && !stall_bank_pipe && !dfpq_hazard_st0;
assign mrvq_pop = !dfpq_pop && mrvq_valid_st0 && !stall_bank_pipe && !mrvq_hazard_st0;
assign reqq_pop = !mrvq_pop && reqq_req_st0 && !stall_bank_pipe && !is_fill_st1[0] && !reqq_hazard_st0;
assign snrq_pop = !reqq_pop && snrq_valid_st0 && !stall_bank_pipe && !snrq_hazard_st0;
integer st1_cycle;
@@ -179,11 +209,13 @@ module VX_bank (
assign dfpq_hazard_st0 = 0;
assign mrvq_hazard_st0 = 0;
assign reqq_hazard_st0 = 0;
assign snrq_hazard_st0 = 0;
for (st1_cycle = 0; st1_cycle < `STAGE_1_CYCLES; st1_cycle = st1_cycle + 1) begin
if (valid_st1[st1_cycle] && going_to_write_st1[st1_cycle]) begin
if (dfpq_addr_st0 [31:`LINE_SELECT_ADDR_START] == addr_st1[st1_cycle][31:`LINE_SELECT_ADDR_START]) assign dfpq_hazard_st0 = 1;
if (mrvq_addr_st0 [31:`LINE_SELECT_ADDR_START] == addr_st1[st1_cycle][31:`LINE_SELECT_ADDR_START]) assign mrvq_hazard_st0 = 1;
if (reqq_req_addr_st0[31:`LINE_SELECT_ADDR_START] == addr_st1[st1_cycle][31:`LINE_SELECT_ADDR_START]) assign reqq_hazard_st0 = 1;
if (snrq_addr_st0 [31:`LINE_SELECT_ADDR_START] == addr_st1[st1_cycle][31:`LINE_SELECT_ADDR_START]) assign snrq_hazard_st0 = 1;
end
end
end
@@ -198,6 +230,7 @@ module VX_bank (
wire [`BANK_LINE_SIZE_RNG][31:0] qual_writedata_st0;
wire [`REQ_INST_META_SIZE-1:0] qual_inst_meta_st0;
wire qual_going_to_write_st0;
wire qual_is_snp;
wire valid_st1 [`STAGE_1_CYCLES-1:0];
wire going_to_write_st1[`STAGE_1_CYCLES-1:0];
@@ -206,13 +239,15 @@ module VX_bank (
wire [`REQ_INST_META_SIZE-1:0] inst_meta_st1 [`STAGE_1_CYCLES-1:0];
wire is_fill_st1 [`STAGE_1_CYCLES-1:0];
wire [`BANK_LINE_SIZE_RNG][31:0] writedata_st1 [`STAGE_1_CYCLES-1:0];
wire is_snp_st1 [`STAGE_1_CYCLES-1:0];
assign qual_is_fill_st0 = dfpq_pop;
assign qual_valid_st0 = dfpq_pop || mrvq_pop || reqq_pop;
assign qual_valid_st0 = dfpq_pop || mrvq_pop || reqq_pop || snrq_pop;
assign qual_addr_st0 = dfpq_pop ? dfpq_addr_st0 :
mrvq_pop ? mrvq_addr_st0 :
reqq_pop ? reqq_req_addr_st0 :
snrq_pop ? snrq_addr_st0 :
0;
assign qual_writeword_st0 = mrvq_pop ? mrvq_writeword_st0 :
@@ -228,27 +263,30 @@ module VX_bank (
assign qual_going_to_write_st0 = dfpq_pop ? 1 :
(mrvq_pop && (mrvq_mem_write_st0 != `NO_MEM_WRITE)) ? 1 :
(reqq_pop && (reqq_req_mem_write_st0 != `NO_MEM_WRITE)) ? 1 :
0;
(snrq_pop) ? 1 :
0;
VX_generic_register #(.N( 1 + 1 + 32 + 32 + `REQ_INST_META_SIZE + (`BANK_LINE_SIZE_WORDS*32) + 1)) s0_1_c0 (
assign qual_is_snp = snrq_pop ? 1 : 0;
VX_generic_register #(.N( 1 + 1 + 1 + 32 + 32 + `REQ_INST_META_SIZE + (`BANK_LINE_SIZE_WORDS*32) + 1)) s0_1_c0 (
.clk (clk),
.reset(reset),
.stall(stall_bank_pipe),
.flush(0),
.in ({qual_going_to_write_st0, qual_valid_st0, qual_addr_st0, qual_writeword_st0, qual_inst_meta_st0, qual_is_fill_st0, qual_writedata_st0}),
.out ({going_to_write_st1[0] , valid_st1[0] , addr_st1[0] , writeword_st1[0] , inst_meta_st1[0] , is_fill_st1[0] , writedata_st1[0]})
.in ({qual_is_snp , qual_going_to_write_st0, qual_valid_st0, qual_addr_st0, qual_writeword_st0, qual_inst_meta_st0, qual_is_fill_st0, qual_writedata_st0}),
.out ({is_snp_st1[0], going_to_write_st1[0] , valid_st1[0] , addr_st1[0] , writeword_st1[0] , inst_meta_st1[0] , is_fill_st1[0] , writedata_st1[0]})
);
genvar curr_stage;
generate
for (curr_stage = 1; curr_stage < `STAGE_1_CYCLES; curr_stage = curr_stage + 1) begin
VX_generic_register #(.N( 1 + 1 + 32 + 32 + `REQ_INST_META_SIZE + (`BANK_LINE_SIZE_WORDS*32) + 1)) s0_1_cc (
VX_generic_register #(.N( 1 + 1 + 1 + 32 + 32 + `REQ_INST_META_SIZE + (`BANK_LINE_SIZE_WORDS*32) + 1)) s0_1_cc (
.clk (clk),
.reset(reset),
.stall(stall_bank_pipe),
.flush(0),
.in ({going_to_write_st1[curr_stage-1], valid_st1[curr_stage-1], addr_st1[curr_stage-1], writeword_st1[curr_stage-1], inst_meta_st1[curr_stage-1], is_fill_st1[curr_stage-1] , writedata_st1[curr_stage-1]}),
.out ({going_to_write_st1[curr_stage] , valid_st1[curr_stage] , addr_st1[curr_stage] , writeword_st1[curr_stage] , inst_meta_st1[curr_stage] , is_fill_st1[curr_stage] , writedata_st1[curr_stage] })
.in ({is_snp_st1[curr_stage-1], going_to_write_st1[curr_stage-1], valid_st1[curr_stage-1], addr_st1[curr_stage-1], writeword_st1[curr_stage-1], inst_meta_st1[curr_stage-1], is_fill_st1[curr_stage-1] , writedata_st1[curr_stage-1]}),
.out ({is_snp_st1[curr_stage] , going_to_write_st1[curr_stage] , valid_st1[curr_stage] , addr_st1[curr_stage] , writeword_st1[curr_stage] , inst_meta_st1[curr_stage] , is_fill_st1[curr_stage] , writedata_st1[curr_stage] })
);
end
endgenerate
@@ -268,6 +306,9 @@ module VX_bank (
wire [2:0] mem_write_st1e;
wire [`vx_clog2(`NUMBER_REQUESTS)-1:0] tid_st1e;
wire fill_saw_dirty_st1e;
wire is_snp_st1e;
assign is_snp_st1e = is_snp_st1[`STAGE_1_CYCLES-1];
assign {rd_st1e, wb_st1e, warp_num_st1e, mem_read_st1e, mem_write_st1e, tid_st1e} = inst_meta_st1[`STAGE_1_CYCLES-1];
@@ -290,6 +331,8 @@ module VX_bank (
.mem_write_st1e(mem_write_st1e),
.mem_read_st1e (mem_read_st1e),
.is_snp_st1e (is_snp_st1e),
// Read Data
.readword_st1e (readword_st1e),
.readdata_st1e (readdata_st1e),
@@ -312,14 +355,15 @@ module VX_bank (
wire[`TAG_SELECT_SIZE_RNG] readtag_st2;
wire is_fill_st2;
wire fill_saw_dirty_st2;
wire is_snp_st2;
VX_generic_register #(.N( 1 + 1 + 1 + 32 + 32 + 32 + (`BANK_LINE_SIZE_WORDS * 32) + 1 + 1 + `REQ_INST_META_SIZE + `TAG_SELECT_NUM_BITS)) st_1e_2 (
VX_generic_register #(.N( 1 + 1 + 1 + 1 + 32 + 32 + 32 + (`BANK_LINE_SIZE_WORDS * 32) + 1 + 1 + `REQ_INST_META_SIZE + `TAG_SELECT_NUM_BITS)) st_1e_2 (
.clk (clk),
.reset(reset),
.stall(stall_bank_pipe),
.flush(0),
.in ({fill_saw_dirty_st1e, is_fill_st1[`STAGE_1_CYCLES-1], qual_valid_st1e_2, addr_st1[`STAGE_1_CYCLES-1], writeword_st1[`STAGE_1_CYCLES-1], readword_st1e, readdata_st1e, readtag_st1e, miss_st1e, dirty_st1e, inst_meta_st1[`STAGE_1_CYCLES-1]}),
.out ({fill_saw_dirty_st2 , is_fill_st2 , valid_st2 , addr_st2 , writeword_st2 , readword_st2 , readdata_st2 , readtag_st2 , miss_st2 , dirty_st2 , inst_meta_st2 })
.in ({is_snp_st1e, fill_saw_dirty_st1e, is_fill_st1[`STAGE_1_CYCLES-1], qual_valid_st1e_2, addr_st1[`STAGE_1_CYCLES-1], writeword_st1[`STAGE_1_CYCLES-1], readword_st1e, readdata_st1e, readtag_st1e, miss_st1e, dirty_st1e, inst_meta_st1[`STAGE_1_CYCLES-1]}),
.out ({is_snp_st2 , fill_saw_dirty_st2 , is_fill_st2 , valid_st2 , addr_st2 , writeword_st2 , readword_st2 , readdata_st2 , readtag_st2 , miss_st2 , dirty_st2 , inst_meta_st2 })
);
@@ -331,7 +375,7 @@ module VX_bank (
// Enqueue to CWB Queue
wire cwbq_push = valid_st2 && !miss_st2;
wire cwbq_push = (valid_st2 && !miss_st2);
wire [31:0] cwbq_data = readword_st2;
wire [`vx_clog2(`NUMBER_REQUESTS)-1:0] cwbq_tid = miss_add_tid;
wire [4:0] cwbq_rd = miss_add_rd;
@@ -370,12 +414,14 @@ module VX_bank (
.possible_fill (possible_fill),
.success_fill (is_fill_st2),
.fill_addr (addr_st2),
.invalidate_fill (invalidate_fill)
);
// Enqueu in dram_fill_req
assign dram_fill_req = valid_st2 && miss_st2 && !invalidate_fill;
assign dram_because_of_snp = is_snp_st2 && valid_st2 && miss_st2;
assign dram_snp_full = snrq_full && snp_req;
assign dram_fill_req_addr = addr_st2;
assign dram_wb_req = !dwbq_empty;