wu-arch/vortex
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fixed Flushing and Prefetching

Browse Source
This commit is contained in:
felsabbagh3
2020-04-04 17:57:35 -07:00
parent a7a1906bea
commit 65fa9285bf
7 changed files with 107 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
rtl/VX_cache/VX_bank.v
View File

@@ -106,6 +106,15 @@ module VX_bank
);
reg snoop_state = 0;
always @(posedge clk) begin
if (reset) begin
snoop_state <= 0;
end else begin
snoop_state <= (snoop_state | snp_req) && ((FUNC_ID == `LLFUNC_ID) || (FUNC_ID == `L3FUNC_ID));
end
end
wire snrq_pop;
@@ -504,7 +513,7 @@ module VX_bank
wire invalidate_fill;
// Enqueue to miss reserv if it's a valid miss
assign miss_add = valid_st2 && !is_snp_st2 && miss_st2 && !mrvq_full && !((is_snp_st2 && valid_st2 && ffsq_full) ||((valid_st2 && !miss_st2) && cwbq_full) || (((valid_st2 && miss_st2 && dirty_st2) || fill_saw_dirty_st2) && dwbq_full) || (valid_st2 && miss_st2 && mrvq_full) || (valid_st2 && miss_st2 && !invalidate_fill && dram_fill_req_queue_full));
assign miss_add = valid_st2 && !is_snp_st2 && miss_st2 && !mrvq_full && !(should_flush && dwbq_push) && !((is_snp_st2 && valid_st2 && ffsq_full) ||((valid_st2 && !miss_st2) && cwbq_full) || (((valid_st2 && miss_st2 && dirty_st2) || fill_saw_dirty_st2) && dwbq_full) || (valid_st2 && miss_st2 && mrvq_full) || (valid_st2 && miss_st2 && !invalidate_fill && dram_fill_req_queue_full));
assign miss_add_pc = pc_st2;
assign miss_add_addr = addr_st2;
assign miss_add_data = writeword_st2;
@@ -535,12 +544,23 @@ module VX_bank
.full (cwbq_full)
);
wire should_flush = snoop_state && valid_st2 && (miss_add_mem_write != `NO_MEM_WRITE) && !is_snp_st2 && !is_fill_st2;
// Enqueue to DWB Queue
wire dwbq_push = ((valid_st2 && miss_st2 && dirty_st2) || fill_saw_dirty_st2) && !dwbq_full && !((is_snp_st2 && valid_st2 && ffsq_full) ||((valid_st2 && !miss_st2) && cwbq_full) || (valid_st2 && miss_st2 && mrvq_full) || (valid_st2 && miss_st2 && !invalidate_fill && dram_fill_req_queue_full));
wire[31:0] dwbq_req_addr = {readtag_st2, addr_st2[`LINE_SELECT_ADDR_END:0]} & `BASE_ADDR_MASK;
wire[`BANK_LINE_SIZE_RNG][`WORD_SIZE-1:0] dwbq_req_data = readdata_st2;
wire dwbq_push = ((valid_st2 && miss_st2 && dirty_st2) || fill_saw_dirty_st2 || should_flush) && !dwbq_full && !((is_snp_st2 && valid_st2 && ffsq_full) ||((valid_st2 && !miss_st2) && cwbq_full) || (valid_st2 && miss_st2 && mrvq_full) || (valid_st2 && miss_st2 && !invalidate_fill && dram_fill_req_queue_full));
wire[31:0] dwbq_req_addr;
wire dwbq_empty;
wire[`BANK_LINE_SIZE_RNG][`WORD_SIZE-1:0] dwbq_req_data;
if ((FUNC_ID == `LLFUNC_ID) || (FUNC_ID == `L3FUNC_ID)) begin
assign dwbq_req_data = (should_flush && dwbq_push) ? writeword_st2 : readdata_st2;
assign dwbq_req_addr = (should_flush && dwbq_push) ? (addr_st2) : ({readtag_st2, addr_st2[`LINE_SELECT_ADDR_END:0]} & `BASE_ADDR_MASK);
end else begin
assign dwbq_req_data = readdata_st2;
assign dwbq_req_addr = {readtag_st2, addr_st2[`LINE_SELECT_ADDR_END:0]} & `BASE_ADDR_MASK;
end
wire possible_fill = valid_st2 && miss_st2 && !dram_fill_req_queue_full && !is_snp_st2;
wire[31:0] fill_invalidator_addr = addr_st2 & `BASE_ADDR_MASK;
VX_fill_invalidator #(

33
rtl/VX_cache/VX_cache_wb_sel_merge.v
View File

@@ -105,15 +105,34 @@ module VX_cache_wb_sel_merge
core_wb_pc = 0;
core_wb_address = 0;
for (this_bank = 0; this_bank < NUMBER_BANKS; this_bank = this_bank + 1) begin
if (((FUNC_ID == `LLFUNC_ID) && found_bank && per_bank_wb_valid[this_bank] && ((this_bank == main_bank_index) || (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index]))) || ((FUNC_ID != `LLFUNC_ID) && ((this_bank == main_bank_index) || (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index])) && found_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_wb_valid[per_bank_wb_tid[this_bank]] = 1;
core_wb_readdata[per_bank_wb_tid[this_bank]] = per_bank_wb_data[this_bank];
core_wb_pc[per_bank_wb_tid[this_bank]] = per_bank_wb_pc[this_bank];
core_wb_address[per_bank_wb_tid[this_bank]] = per_bank_wb_address[this_bank];
per_bank_wb_pop_unqual[this_bank] = 1;
if ((FUNC_ID == `LLFUNC_ID) || (FUNC_ID == `L3FUNC_ID)) begin
if (found_bank && !core_wb_valid[per_bank_wb_tid[this_bank]] && per_bank_wb_valid[this_bank] && ((this_bank == main_bank_index) || (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index]))) begin
core_wb_valid[per_bank_wb_tid[this_bank]] = 1;
core_wb_readdata[per_bank_wb_tid[this_bank]] = per_bank_wb_data[this_bank];
core_wb_pc[per_bank_wb_tid[this_bank]] = per_bank_wb_pc[this_bank];
core_wb_address[per_bank_wb_tid[this_bank]] = per_bank_wb_address[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
per_bank_wb_pop_unqual[this_bank] = 0;
if (((this_bank == main_bank_index) || (per_bank_wb_tid[this_bank] != per_bank_wb_tid[main_bank_index])) && found_bank && !core_wb_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_wb_valid[per_bank_wb_tid[this_bank]] = 1;
core_wb_readdata[per_bank_wb_tid[this_bank]] = per_bank_wb_data[this_bank];
core_wb_pc[per_bank_wb_tid[this_bank]] = per_bank_wb_pc[this_bank];
core_wb_address[per_bank_wb_tid[this_bank]] = per_bank_wb_address[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

2
rtl/VX_cache/VX_tag_data_access.v
View File

@@ -290,6 +290,6 @@ module VX_tag_data_access
assign readtag_st1e = use_read_tag_st1e;
assign fill_sent = miss_st1e;
assign fill_saw_dirty_st1e = real_writefill && dirty_st1e;
assign invalidate_line = is_snp_st1e && miss_st1e;
assign invalidate_line = snoop_hit;
endmodule