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minor update

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This commit is contained in:
Blaise Tine 2021-01-01 20:24:18 -08:00
parent da9649c2a3
commit 93c36273fa
5 changed files with 45 additions and 72 deletions
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2
hw/rtl/VX_config.vh
View file

@ -248,7 +248,7 @@
// Size of LSU Request Queue
`ifndef LSUQ_SIZE
`define LSUQ_SIZE 8
`define LSUQ_SIZE (`NUM_WARPS * `NUM_THREADS)
`endif
// Size of FPU Request Queue

2
hw/rtl/VX_gpr_ram_f.v
View file

@ -20,6 +20,8 @@ module VX_gpr_ram_f #(
);
reg [DATAW-1:0] mem [DEPTH-1:0];
initial mem = '{default: 0};
always @(posedge clk) begin
if (wren) begin
mem [waddr] <= wdata;

62
hw/rtl/VX_gpr_stage.v
View file

@ -16,36 +16,14 @@ module VX_gpr_stage #(
`UNUSED_VAR (reset)
`ifdef EXT_F_ENABLE
localparam RAM_DEPTH = `NUM_WARPS * (`NUM_REGS / 2);
wire [`NUM_THREADS-1:0][31:0] rdata1_i, rdata2_i, rdata1_f, rdata2_f, rdata3_f;
localparam RAM_DEPTH = `NUM_WARPS * `NUM_REGS;
wire [`NUM_THREADS-1:0][31:0] rdata1, rdata2, rdata3;
wire [$clog2(RAM_DEPTH)-1:0] waddr, raddr1, raddr2, raddr3;
wire waddr_is_fp = writeback_if.rd[`NR_BITS-1];
wire raddr1_is_fp = gpr_req_if.rs1[`NR_BITS-1];
wire raddr2_is_fp = gpr_req_if.rs2[`NR_BITS-1];
wire raddr3_is_fp = gpr_req_if.rs3[`NR_BITS-1];
`UNUSED_VAR (raddr3_is_fp)
assign waddr = {writeback_if.wid, writeback_if.rd[`NR_BITS-2:0]};
assign raddr1 = {gpr_req_if.wid, gpr_req_if.rs1[`NR_BITS-2:0]};
assign raddr2 = {gpr_req_if.wid, gpr_req_if.rs2[`NR_BITS-2:0]};
assign raddr3 = {gpr_req_if.wid, gpr_req_if.rs3[`NR_BITS-2:0]};
for (genvar i = 0; i < `NUM_THREADS; i++) begin
VX_gpr_ram_i #(
.DATAW (32),
.DEPTH (RAM_DEPTH)
) gpr_ram_i (
.clk (clk),
.wren (writeback_if.valid && writeback_if.tmask[i] && !waddr_is_fp),
.waddr (waddr),
.wdata (writeback_if.data[i]),
.raddr1 (raddr1),
.raddr2 (raddr2),
.rdata1 (rdata1_i[i]),
.rdata2 (rdata2_i[i])
);
end
assign waddr = {writeback_if.wid, writeback_if.rd};
assign raddr1 = {gpr_req_if.wid, gpr_req_if.rs1};
assign raddr2 = {gpr_req_if.wid, gpr_req_if.rs2};
assign raddr3 = {gpr_req_if.wid, gpr_req_if.rs3};
for (genvar i = 0; i < `NUM_THREADS; i++) begin
VX_gpr_ram_f #(
@ -53,29 +31,29 @@ module VX_gpr_stage #(
.DEPTH (RAM_DEPTH)
) gpr_ram_f (
.clk (clk),
.wren (writeback_if.valid && writeback_if.tmask[i] && waddr_is_fp),
.wren (writeback_if.valid && writeback_if.tmask[i]),
.waddr (waddr),
.wdata (writeback_if.data[i]),
.raddr1 (raddr1),
.raddr2 (raddr2),
.raddr3 (raddr3),
.rdata1 (rdata1_f[i]),
.rdata2 (rdata2_f[i]),
.rdata3 (rdata3_f[i])
.rdata1 (rdata1[i]),
.rdata2 (rdata2[i]),
.rdata3 (rdata3[i])
);
end
assign gpr_rsp_if.rs1_data = raddr1_is_fp ? rdata1_f : rdata1_i;
assign gpr_rsp_if.rs2_data = raddr2_is_fp ? rdata2_f : rdata2_i;
assign gpr_rsp_if.rs3_data = rdata3_f;
assign gpr_rsp_if.rs1_data = rdata1;
assign gpr_rsp_if.rs2_data = rdata2;
assign gpr_rsp_if.rs3_data = rdata3;
`else
localparam RAM_DEPTH = `NUM_WARPS * `NUM_REGS;
wire [`NUM_THREADS-1:0][31:0] rdata1_i, rdata2_i;
wire [`NUM_THREADS-1:0][31:0] rdata1, rdata2;
wire [$clog2(RAM_DEPTH)-1:0] waddr, raddr1, raddr2;
assign waddr = {writeback_if.wid, writeback_if.rd};
assign raddr1 = {gpr_req_if.wid, gpr_req_if.rs1};
assign raddr2 = {gpr_req_if.wid, gpr_req_if.rs2};
assign raddr1 = {gpr_req_if.wid, gpr_req_if.rs1};
assign raddr2 = {gpr_req_if.wid, gpr_req_if.rs2};
`UNUSED_VAR (gpr_req_if.rs3)
for (genvar i = 0; i < `NUM_THREADS; i++) begin
@ -89,13 +67,13 @@ module VX_gpr_stage #(
.wdata (writeback_if.data[i]),
.raddr1 (raddr1),
.raddr2 (raddr2),
.rdata1 (rdata1_i[i]),
.rdata2 (rdata2_i[i])
.rdata1 (rdata1[i]),
.rdata2 (rdata2[i])
);
end
assign gpr_rsp_if.rs1_data = rdata1_i;
assign gpr_rsp_if.rs2_data = rdata2_i;
assign gpr_rsp_if.rs1_data = rdata1;
assign gpr_rsp_if.rs2_data = rdata2;
assign gpr_rsp_if.rs3_data = 0;
`endif

49
hw/rtl/cache/VX_bank.v vendored
View file

@ -85,6 +85,9 @@ module VX_bank #(
input wire [`BANK_LINE_WIDTH-1:0] dram_rsp_data,
output wire dram_rsp_ready
);
localparam MSHR_SIZE_BITS = $clog2(MSHR_SIZE+1);
`ifdef DBG_CACHE_REQ_INFO
/* verilator lint_off UNUSED */
wire [31:0] debug_pc_st0;
@ -172,8 +175,8 @@ module VX_bank #(
);
wire mshr_pop;
reg [$clog2(MSHR_SIZE+1)-1:0] mshr_pending_size;
wire [$clog2(MSHR_SIZE+1)-1:0] mshr_pending_size_n;
reg [MSHR_SIZE_BITS-1:0] mshr_pending_size;
wire [MSHR_SIZE_BITS-1:0] mshr_pending_size_n;
reg mshr_going_full;
wire mshr_valid_st0;
@ -264,7 +267,7 @@ module VX_bank #(
wire is_mshr_miss_st2 = valid_st2 && is_mshr_st2 && (miss_st2 || force_miss_st2);
wire creq_commit = valid_st2
wire creq_commit = valid_st2 && !is_fill_st2
&& (core_req_hit_st2 || (WRITE_THROUGH && mem_rw_st2))
&& !pipeline_stall;
@ -287,7 +290,7 @@ module VX_bank #(
mshr_going_full <= 0;
end else begin
mshr_pending_size <= mshr_pending_size_n;
mshr_going_full <= (mshr_pending_size_n == MSHR_SIZE);
mshr_going_full <= (mshr_pending_size_n == MSHR_SIZE_BITS'(MSHR_SIZE));
end
end
@ -298,13 +301,10 @@ module VX_bank #(
assign addr_st0 = mshr_pop_unqual ? mshr_addr_st0 :
drsq_pop_unqual ? drsq_addr_st0 :
creq_pop_unqual ? creq_addr_st0[`LINE_SELECT_ADDR_RNG] :
0;
creq_addr_st0[`LINE_SELECT_ADDR_RNG];
if (`WORD_SELECT_WIDTH != 0) begin
assign wsel_st0 = creq_pop_unqual ? creq_addr_st0[`WORD_SELECT_WIDTH-1:0] :
mshr_pop_unqual ? mshr_wsel_st0 :
0;
assign wsel_st0 = creq_pop_unqual ? creq_addr_st0[`WORD_SELECT_WIDTH-1:0] : mshr_wsel_st0;
end else begin
`UNUSED_VAR (mshr_wsel_st0)
assign wsel_st0 = 0;
@ -312,25 +312,15 @@ module VX_bank #(
assign writedata_st0 = drsq_filldata_st0;
assign tag_st0 = mshr_pop_unqual ? `REQ_TAG_WIDTH'(mshr_tag_st0) :
creq_pop_unqual ? `REQ_TAG_WIDTH'(creq_tag_st0) :
0;
assign tag_st0 = mshr_pop_unqual ? `REQ_TAG_WIDTH'(mshr_tag_st0) : `REQ_TAG_WIDTH'(creq_tag_st0);
assign mem_rw_st0 = mshr_pop_unqual ? mshr_rw_st0 :
creq_pop_unqual ? creq_rw_st0 :
0;
assign mem_rw_st0 = mshr_pop_unqual ? mshr_rw_st0 : creq_rw_st0;
assign byteen_st0 = mshr_pop_unqual ? mshr_byteen_st0 :
creq_pop_unqual ? creq_byteen_st0 :
0;
assign byteen_st0 = mshr_pop_unqual ? mshr_byteen_st0 : creq_byteen_st0;
assign req_tid_st0 = mshr_pop_unqual ? mshr_tid_st0 :
creq_pop_unqual ? creq_tid_st0 :
0;
assign req_tid_st0 = mshr_pop_unqual ? mshr_tid_st0 : creq_tid_st0;
assign writeword_st0 = mshr_pop_unqual ? mshr_writeword_st0 :
creq_pop_unqual ? creq_writeword_st0 :
0;
assign writeword_st0 = mshr_pop_unqual ? mshr_writeword_st0 : creq_writeword_st0;
`ifdef DBG_CACHE_REQ_INFO
if (CORE_TAG_WIDTH != CORE_TAG_ID_BITS && CORE_TAG_ID_BITS != 0) begin
@ -426,13 +416,13 @@ if (DRAM_ENABLE) begin
|| (is_mshr_st1 && addr_st1 != addr_st2))
&& !incoming_fill_st1;
assign do_writeback_st1 = (WRITE_THROUGH && mem_rw_st1)
|| (!WRITE_THROUGH && dirty_st1 && is_fill_st1);
assign do_writeback_st1 = (WRITE_THROUGH && !is_fill_st1 && mem_rw_st1)
|| (!WRITE_THROUGH && is_fill_st1 && dirty_st1);
assign dreq_push_st1 = do_fill_req_st1 || do_writeback_st1;
assign mshr_push_st1 = (miss_st1 || force_miss_st1)
&& !(WRITE_THROUGH && mem_rw_st1);
&& !(WRITE_THROUGH && !is_fill_st1 && mem_rw_st1);
assign crsq_push_st1 = core_req_hit_st1 && !mem_rw_st1;
@ -591,6 +581,9 @@ end
// or the fill request is comming for this block
wire mshr_init_ready_state_st2 = valid_st2 && (!miss_st2 || incoming_fill_qual_st2);
// use dram rsp or core req address to lookup the mshr
wire [`LINE_ADDR_WIDTH-1:0] lookup_addr = drsq_pop_unqual ? drsq_addr_st0 : creq_addr_st0[`LINE_SELECT_ADDR_RNG];
VX_miss_resrv #(
.BANK_ID (BANK_ID),
.CACHE_ID (CACHE_ID),
@ -622,7 +615,7 @@ end
// lookup
.lookup_ready (update_ready_st0),
.lookup_addr (addr_st0),
.lookup_addr (lookup_addr),
.lookup_match (mshr_pending_hazard_unqual_st0),
// schedule

2
hw/rtl/cache/VX_miss_resrv.v vendored
View file

@ -53,7 +53,7 @@ module VX_miss_resrv #(
// dequeue
input wire dequeue
);
`USE_FAST_BRAM reg [`LINE_ADDR_WIDTH-1:0] addr_table [MSHR_SIZE-1:0];
`USE_FAST_BRAM reg [MSHR_SIZE-1:0][`LINE_ADDR_WIDTH-1:0] addr_table;
reg [MSHR_SIZE-1:0] valid_table;
reg [MSHR_SIZE-1:0] ready_table;