Moved GPR to back-end

This commit is contained in:
felsabbagh3 2019-10-14 19:08:32 -04:00
parent e67310acfb
commit ee83e6d8c8
26 changed files with 2320 additions and 2564 deletions

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View file

@ -6,6 +6,9 @@
.type _start, @function
.global _start
_start:
# li a1, 5
# jal Hi
# ecall
li a0, 8 # Num Warps
csrw 0x20, a0 # Setting the number of available warps
li a0, 4 # Num Threads
@ -13,10 +16,16 @@ _start:
csrw mhartid,zero
csrw misa,zero
lui sp, 0x7ffff
jal vx_before_main
# jal vx_before_main
jal main
ecall
# Hi:
# li a2, 7
# nop
# nop
# ret
.type vx_createThreads, @function
.global vx_createThreads
vx_createThreads:

View file

@ -7,7 +7,7 @@ VERILATOR:
compdebug:
echo "#define VCD_OUTPUT" > tb_debug.h
verilator --compiler gcc -Wall --trace -cc Vortex.v -I. -Iinterfaces/ -Ipipe_regs/ --exe test_bench.cpp -CFLAGS -std=c++11 -O3
verilator --compiler gcc --prof-cfuncs -DVL_DEBUG=1 --coverage -Wall --trace -cc Vortex.v -I. -Iinterfaces/ -Ipipe_regs/ --exe test_bench.cpp -CFLAGS '-std=c++11 -DVL_DEBUG'
RUNFILE: VERILATOR
(cd obj_dir && make -j -f VVortex.mk)

View file

@ -45,7 +45,7 @@ module VX_alu(
wire[63:0] mult_signed_un_result = alu_in1_signed * ALU_in2;
/* verilator lint_on UNUSED */
always @(*) begin
always @(in_alu_op or ALU_in1 or ALU_in2) begin
case(in_alu_op)
`ADD: out_alu_result = $signed(ALU_in1) + $signed(ALU_in2);
`SUB: out_alu_result = $signed(ALU_in1) - $signed(ALU_in2);

View file

@ -5,8 +5,10 @@ module VX_back_end (
input wire[31:0] csr_decode_csr_data,
output wire execute_branch_stall,
input wire in_fwd_stall,
output wire out_mem_delay,
output wire out_gpr_stall,
VX_jal_response_inter VX_jal_rsp,
VX_branch_response_inter VX_branch_rsp,
@ -15,9 +17,14 @@ module VX_back_end (
VX_frE_to_bckE_req_inter VX_bckE_req,
VX_wb_inter VX_writeback_inter,
VX_warp_ctl_inter VX_warp_ctl,
VX_dcache_response_inter VX_dcache_rsp,
VX_dcache_request_inter VX_dcache_req,
VX_forward_reqeust_inter VX_fwd_req_de,
VX_forward_response_inter VX_fwd_rsp,
VX_forward_exe_inter VX_fwd_exe,
VX_forward_mem_inter VX_fwd_mem,
VX_forward_wb_inter VX_fwd_wb,
@ -51,8 +58,27 @@ VX_mem_req_inter VX_exe_mem_req();
VX_mem_req_inter VX_mem_req();
VX_gpr_data_inter VX_gpr_data();
VX_frE_to_bckE_req_inter VX_bckE_req_out();
VX_gpr_stage VX_gpr_stage(
.clk (clk),
.VX_writeback_inter(VX_writeback_inter),
.VX_fwd_rsp (VX_fwd_rsp),
.in_fwd_stall (in_fwd_stall),
.VX_bckE_req (VX_bckE_req),
.VX_warp_ctl (VX_warp_ctl),
.VX_bckE_req_out (VX_bckE_req_out),
.VX_gpr_data (VX_gpr_data),
.VX_fwd_req_de (VX_fwd_req_de),
.out_gpr_stall (out_gpr_stall)
);
VX_execute vx_execute(
.VX_bckE_req (VX_bckE_req),
.VX_bckE_req (VX_bckE_req_out),
.VX_gpr_data (VX_gpr_data),
.VX_fwd_exe (VX_fwd_exe),
.in_csr_data (csr_decode_csr_data),

View file

@ -1,169 +0,0 @@
`include "VX_define.v"
typedef struct packed
{
logic[31:0] pc;
logic[`NT_M1:0] thread_mask;
} warp_meta_t;
typedef struct packed
{
logic[`NW-1:0] valid;
logic[`NW-1:0] visible;
logic[`NW-1:0] stalled;
warp_meta_t[`NW-1:0] warp_data;
} warps_meta_t;
module VX_better_warp_scheduler (
input wire clk, // Clock
input wire stall,
// Wspawn
input wire wspawn,
input wire[31:0] wsapwn_pc,
// CTM
input wire ctm,
input wire[`NT_M1:0] ctm_mask,
input wire[`NW_M1:0] ctm_warp_num,
// WHALT
input wire whalt,
input wire[`NW_M1:0] whalt_warp_num,
// WSTALL
input wire wstall,
input wire[`NW_M1:0] wstall_warp_num,
// JAL
input wire jal,
input wire[31:0] jal_dest,
input wire[`NW_M1:0] jal_warp_num,
// Branch
input wire branch_valid,
input wire branch_dir,
input wire[31:0] branch_dest,
input wire[`NW_M1:0] branch_warp_num,
output wire[`NT_M1:0] thread_mask,
output wire[`NW_M1:0] warp_num,
output wire[31:0] warp_pc,
output wire out_ebreak
);
warps_meta_t warps_meta;
initial begin
warps_meta.valid[0] = 1;
warps_meta.warp_data[0].thread_mask = 1;
end
always @(posedge clk) begin
$display("JAL %d DI %h",jal, jal_dest);
if (external_stall) begin
// Wsapwning warps
if (wspawn && found_wspawn) begin
warps_meta.warp_data[warp_to_wsapwn].pc <= wsapwn_pc;
warps_meta.warp_data[warp_to_wsapwn].thread_mask <= 1;
warps_meta.valid[warp_to_wsapwn] <= 1;
end
// Halting warps
if (whalt) begin
warps_meta.valid[whalt_warp_num] <= 0;
warps_meta.visible[whalt_warp_num] <= 0;
end
// Changing thread masks
if (ctm) begin
warps_meta.warp_data[ctm_warp_num].thread_mask <= ctm_mask;
end
// Stalling the scheduling of warps
if (wstall) begin
warps_meta.stalled[wstall_warp_num] <= 1;
warps_meta.visible[wstall_warp_num] <= 0;
end
// Jal
if (jal) begin
$display("UPDATING PC JAL: %h", jal_dest);
warps_meta.warp_data[jal_warp_num].pc <= jal_dest;
warps_meta.stalled[jal_warp_num] <= 0;
end
// Branch
if (branch_valid) begin
if (branch_dir) warps_meta.warp_data[branch_warp_num].pc <= branch_dest;
warps_meta.stalled[branch_warp_num] <= 0;
end
end else if (real_schedule) begin
// Refilling active warps
if (warps_meta.visible == 0) begin
warps_meta.visible <= warps_meta.valid & (~warps_meta.stalled);
end
// Don't change state if stall
warps_meta.visible[warp_to_schedule] <= 0;
warps_meta.warp_data[warp_to_schedule].pc <= warp_pc;
end else begin
// Refilling active warps
if (warps_meta.visible == 0) begin
warps_meta.visible <= warps_meta.valid & (~warps_meta.stalled);
end
end
end
wire external_stall = stall || wspawn || ctm || whalt || wstall || jal || branch_valid;
wire real_schedule = schedule && !warps_meta.stalled[warp_to_schedule];
assign warp_pc = warps_meta.warp_data[warp_to_schedule].pc + 4;
assign thread_mask = (external_stall || !real_schedule) ? 0 : warps_meta.warp_data[warp_to_schedule].thread_mask;
assign warp_num = warp_to_schedule;
// Choosing a warp to schedule
wire[`NW_M1:0] warp_to_schedule;
wire schedule;
VX_priority_encoder choose_schedule(
.valids(warps_meta.visible),
.index (warp_to_schedule),
.found (schedule)
);
// Choosing a warp to wsapwn
wire[`NW_M1:0] warp_to_wsapwn;
wire found_wspawn;
VX_priority_encoder choose_wsapwn(
.valids(~warps_meta.valid),
.index (warp_to_wsapwn),
.found (found_wspawn)
);
assign out_ebreak = (warps_meta.valid == 0);
endmodule

View file

@ -2,30 +2,30 @@
`include "VX_define.v"
module VX_decode(
input wire clk,
// Fetch Inputs
VX_inst_meta_inter fd_inst_meta_de,
// WriteBack inputs
VX_wb_inter VX_writeback_inter,
// VX_wb_inter VX_writeback_inter,
// Fwd Request
VX_forward_reqeust_inter VX_fwd_req_de,
// VX_forward_reqeust_inter VX_fwd_req_de,
// FORWARDING INPUTS
VX_forward_response_inter VX_fwd_rsp,
// VX_forward_response_inter VX_fwd_rsp,
input wire[`NW_M1:0] in_which_wspawn,
// input wire[`NW_M1:0] in_which_wspawn,
// Outputs
VX_frE_to_bckE_req_inter VX_frE_to_bckE_req,
VX_warp_ctl_inter VX_warp_ctl,
output reg out_gpr_stall,
output reg out_branch_stall
output reg out_branch_stall,
output wire out_ebreak
);
assign out_gpr_stall = 0;
wire[31:0] in_instruction = fd_inst_meta_de.instruction;
wire[31:0] in_curr_PC = fd_inst_meta_de.inst_pc;
@ -53,7 +53,7 @@ module VX_decode(
wire is_e_inst;
wire is_gpgpu;
wire is_clone;
// wire is_clone;
wire is_jalrs;
wire is_jmprt;
wire is_wspawn;
@ -94,44 +94,44 @@ module VX_decode(
assign VX_fwd_req_de.src1 = VX_frE_to_bckE_req.rs1;
assign VX_fwd_req_de.src2 = VX_frE_to_bckE_req.rs2;
assign VX_fwd_req_de.warp_num = VX_frE_to_bckE_req.warp_num;
// assign VX_fwd_req_de.src1 = VX_frE_to_bckE_req.rs1;
// assign VX_fwd_req_de.src2 = VX_frE_to_bckE_req.rs2;
// assign VX_fwd_req_de.warp_num = VX_frE_to_bckE_req.warp_num;
VX_gpr_read_inter VX_gpr_read();
assign VX_gpr_read.rs1 = VX_frE_to_bckE_req.rs1;
assign VX_gpr_read.rs2 = VX_frE_to_bckE_req.rs2;
assign VX_gpr_read.warp_num = VX_frE_to_bckE_req.warp_num;
// VX_gpr_read_inter VX_gpr_read();
// assign VX_gpr_read.rs1 = VX_frE_to_bckE_req.rs1;
// assign VX_gpr_read.rs2 = VX_frE_to_bckE_req.rs2;
// assign VX_gpr_read.warp_num = VX_frE_to_bckE_req.warp_num;
VX_gpr_jal_inter VX_gpr_jal();
assign VX_gpr_jal.is_jal = is_jal;
assign VX_gpr_jal.curr_PC = in_curr_PC;
// VX_gpr_jal_inter VX_gpr_jal();
// assign VX_gpr_jal.is_jal = is_jal;
// assign VX_gpr_jal.curr_PC = in_curr_PC;
VX_gpr_clone_inter VX_gpr_clone();
assign VX_gpr_clone.is_clone = is_clone;
assign VX_gpr_clone.warp_num = VX_frE_to_bckE_req.warp_num;
// VX_gpr_clone_inter VX_gpr_clone();
// assign VX_gpr_clone.is_clone = is_clone;
// assign VX_gpr_clone.warp_num = VX_frE_to_bckE_req.warp_num;
VX_gpr_wspawn_inter VX_gpr_wspawn();
assign VX_gpr_wspawn.is_wspawn = is_wspawn;
assign VX_gpr_wspawn.which_wspawn = in_which_wspawn;
// assign VX_gpr_wspawn.warp_num = VX_frE_to_bckE_req.warp_num;
// VX_gpr_wspawn_inter VX_gpr_wspawn();
// assign VX_gpr_wspawn.is_wspawn = is_wspawn;
// assign VX_gpr_wspawn.which_wspawn = in_which_wspawn;
// // assign VX_gpr_wspawn.warp_num = VX_frE_to_bckE_req.warp_num;
VX_gpr_wrapper vx_grp_wrapper(
.clk (clk),
.VX_writeback_inter(VX_writeback_inter),
.VX_fwd_rsp (VX_fwd_rsp),
.VX_gpr_read (VX_gpr_read),
.VX_gpr_jal (VX_gpr_jal),
.VX_gpr_clone (VX_gpr_clone),
.VX_gpr_wspawn (VX_gpr_wspawn),
// VX_gpr_wrapper vx_grp_wrapper(
// .clk (clk),
// .VX_writeback_inter(VX_writeback_inter),
// .VX_fwd_rsp (VX_fwd_rsp),
// .VX_gpr_read (VX_gpr_read),
// .VX_gpr_jal (VX_gpr_jal),
// .VX_gpr_clone (VX_gpr_clone),
// .VX_gpr_wspawn (VX_gpr_wspawn),
.out_a_reg_data (VX_frE_to_bckE_req.a_reg_data),
.out_b_reg_data (VX_frE_to_bckE_req.b_reg_data),
.out_gpr_stall(out_gpr_stall)
);
// .out_a_reg_data (VX_frE_to_bckE_req.a_reg_data),
// .out_b_reg_data (VX_frE_to_bckE_req.b_reg_data),
// .out_gpr_stall(out_gpr_stall)
// );
@ -140,7 +140,6 @@ module VX_decode(
assign VX_frE_to_bckE_req.valid = fd_inst_meta_de.valid;
assign VX_frE_to_bckE_req.warp_num = in_warp_num;
assign VX_warp_ctl.warp_num = in_warp_num;
assign curr_opcode = in_instruction[6:0];
@ -172,46 +171,35 @@ module VX_decode(
assign is_e_inst = (curr_opcode == `SYS_INST) && (func3 == 0);
assign is_gpgpu = (curr_opcode == `GPGPU_INST);
assign is_clone = is_gpgpu && (func3 == 5);
// assign is_clone = is_gpgpu && (func3 == 5);
assign is_jalrs = is_gpgpu && (func3 == 6);
assign is_jmprt = is_gpgpu && (func3 == 4);
assign is_wspawn = is_gpgpu && (func3 == 0);
assign VX_warp_ctl.wspawn = is_wspawn;
assign VX_warp_ctl.wspawn_pc = VX_frE_to_bckE_req.a_reg_data[0];
assign VX_frE_to_bckE_req.csr_immed = is_csr_immed;
assign VX_frE_to_bckE_req.wspawn = is_wspawn;
// wire[`NT_M1:0] jalrs_thread_mask = 0;
// wire[`NT_M1:0] jmprt_thread_mask;
wire[`NT_M1:0] jalrs_thread_mask;
wire[`NT_M1:0] jmprt_thread_mask;
genvar tm_i;
generate
for (tm_i = 0; tm_i < `NT; tm_i = tm_i + 1) begin
assign jalrs_thread_mask[tm_i] = $signed(tm_i) <= $signed(VX_frE_to_bckE_req.b_reg_data[0]);
end
endgenerate
// genvar tm_i;
// generate
// for (tm_i = 0; tm_i < `NT; tm_i = tm_i + 1) begin
// assign jalrs_thread_mask[tm_i] = $signed(tm_i) <= $signed(VX_frE_to_bckE_req.b_reg_data[0]);
// end
// endgenerate
genvar tm_ji;
generate
assign jmprt_thread_mask[0] = 1;
for (tm_ji = 1; tm_ji < `NT; tm_ji = tm_ji + 1) begin
assign jmprt_thread_mask[tm_ji] = 0;
end
endgenerate
assign VX_warp_ctl.thread_mask = is_jalrs ? jalrs_thread_mask : jmprt_thread_mask;
assign VX_warp_ctl.change_mask = is_jalrs || is_jmprt;
assign VX_frE_to_bckE_req.is_csr = is_csr;
assign VX_frE_to_bckE_req.csr_mask = (is_csr_immed == 1'b1) ? {27'h0, VX_frE_to_bckE_req.rs1} : VX_frE_to_bckE_req.a_reg_data[0];
// genvar tm_ji;
// generate
// assign jmprt_thread_mask[0] = 1;
// for (tm_ji = 1; tm_ji < `NT; tm_ji = tm_ji + 1) begin
// assign jmprt_thread_mask[tm_ji] = 0;
// end
// endgenerate
assign VX_frE_to_bckE_req.wb = (is_jal || is_jalr || is_jalrs || is_e_inst) ? `WB_JAL :
@ -295,17 +283,19 @@ module VX_decode(
endcase
end
assign VX_frE_to_bckE_req.jalQual = is_jal;
assign VX_frE_to_bckE_req.jal = temp_jal;
assign VX_frE_to_bckE_req.jal_offset = temp_jal_offset;
wire is_ebreak;
// wire is_ebreak;
// assign is_ebreak = is_e_inst;
assign is_ebreak = (curr_opcode == `SYS_INST) && (jal_sys_jal && in_valid[0]);
wire ebreak = (curr_opcode == `SYS_INST) && (jal_sys_jal && in_valid[0]);
assign VX_frE_to_bckE_req.ebreak = ebreak;
assign out_ebreak = ebreak;
assign VX_warp_ctl.ebreak = is_ebreak;
// CSR

View file

@ -3,6 +3,7 @@
module VX_execute (
VX_frE_to_bckE_req_inter VX_bckE_req,
VX_gpr_data_inter VX_gpr_data,
VX_forward_exe_inter VX_fwd_exe,
input wire[31:0] in_csr_data,
@ -28,8 +29,8 @@ module VX_execute (
wire[31:0] in_jal_offset;
wire[31:0] in_curr_PC;
assign in_a_reg_data = VX_bckE_req.a_reg_data;
assign in_b_reg_data = VX_bckE_req.b_reg_data;
assign in_a_reg_data = VX_gpr_data.a_reg_data;
assign in_b_reg_data = VX_gpr_data.b_reg_data;
assign in_alu_op = VX_bckE_req.alu_op;
assign in_rs2_src = VX_bckE_req.rs2_src;
assign in_itype_immed = VX_bckE_req.itype_immed;
@ -85,7 +86,7 @@ module VX_execute (
assign VX_exe_mem_req.rs1 = VX_bckE_req.rs1;
assign VX_exe_mem_req.rs2 = VX_bckE_req.rs2;
assign VX_exe_mem_req.rd = VX_bckE_req.rd;
assign VX_exe_mem_req.rd2 = VX_bckE_req.b_reg_data;
assign VX_exe_mem_req.rd2 = VX_gpr_data.b_reg_data;
assign VX_exe_mem_req.wb = VX_bckE_req.wb;
assign VX_exe_mem_req.PC_next = VX_bckE_req.PC_next;
assign VX_exe_mem_req.curr_PC = VX_bckE_req.curr_PC;

View file

@ -13,7 +13,6 @@ module VX_fetch (
output wire out_delay,
output wire out_ebreak,
output wire[`NW_M1:0] out_which_wspawn,
VX_jal_response_inter VX_jal_rsp,
VX_branch_response_inter VX_branch_rsp,
VX_inst_meta_inter fe_inst_meta_fd,
@ -73,7 +72,6 @@ module VX_fetch (
assign out_delay = 0;
assign out_which_wspawn = 0;
assign icache_request.pc_address = warp_pc;
assign fe_inst_meta_fd.warp_num = warp_num;

View file

@ -7,8 +7,10 @@ module VX_front_end (
input wire forwarding_fwd_stall,
input wire memory_delay,
input wire execute_branch_stall,
input wire in_gpr_stall,
VX_warp_ctl_inter VX_warp_ctl,
VX_icache_response_inter icache_response_fe,
VX_icache_request_inter icache_request_fe,
@ -17,8 +19,6 @@ module VX_front_end (
VX_branch_response_inter VX_branch_rsp,
VX_wb_inter VX_writeback_inter,
VX_forward_reqeust_inter VX_fwd_req_de,
VX_forward_response_inter VX_fwd_rsp,
VX_frE_to_bckE_req_inter VX_bckE_req,
@ -27,9 +27,6 @@ module VX_front_end (
output wire fetch_ebreak
);
wire[`NW_M1:0] fetch_which_warp;
VX_warp_ctl_inter VX_warp_ctl();
VX_inst_meta_inter fe_inst_meta_fd();
@ -41,8 +38,11 @@ wire decode_branch_stall;
wire decode_gpr_stall;
wire total_freeze = memory_delay || fetch_delay;
wire total_freeze = memory_delay || fetch_delay || in_gpr_stall;
/* verilator lint_off UNUSED */
wire real_fetch_ebreak;
/* verilator lint_on UNUSED */
VX_fetch vx_fetch(
.clk (clk),
@ -58,8 +58,7 @@ VX_fetch vx_fetch(
.icache_request (icache_request_fe),
.VX_branch_rsp (VX_branch_rsp),
.out_delay (fetch_delay),
.out_ebreak (fetch_ebreak),
.out_which_wspawn (fetch_which_warp),
.out_ebreak (real_fetch_ebreak), // fetch_ebreak
.fe_inst_meta_fd (fe_inst_meta_fd)
);
@ -75,26 +74,21 @@ VX_f_d_reg vx_f_d_reg(
VX_decode vx_decode(
.clk (clk),
.fd_inst_meta_de (fd_inst_meta_de),
.VX_writeback_inter(VX_writeback_inter),
.VX_fwd_rsp (VX_fwd_rsp),
.in_which_wspawn (fetch_which_warp),
.VX_frE_to_bckE_req(VX_frE_to_bckE_req),
.VX_fwd_req_de (VX_fwd_req_de),
.VX_warp_ctl (VX_warp_ctl),
.out_gpr_stall (decode_gpr_stall),
.out_branch_stall (decode_branch_stall)
.out_gpr_stall (decode_gpr_stall),
.out_branch_stall (decode_branch_stall),
.out_ebreak (fetch_ebreak)
);
wire special_what = total_freeze || forwarding_fwd_stall;
VX_d_e_reg vx_d_e_reg(
.clk (clk),
.reset (reset),
.in_fwd_stall (forwarding_fwd_stall),
.in_fwd_stall (0),
.in_branch_stall(execute_branch_stall),
.in_freeze (total_freeze),
.in_freeze (special_what),
.in_gpr_stall (decode_gpr_stall),
.VX_frE_to_bckE_req(VX_frE_to_bckE_req),
.VX_bckE_req (VX_bckE_req)

View file

@ -15,6 +15,12 @@ module VX_gpr (
assign write_enable = valid_write_request && ((VX_writeback_inter.wb != 0) && (VX_writeback_inter.rd != 5'h0));
// always @(*) begin
// if(write_enable) $display("Writing to %d: %d = %h",VX_writeback_inter.wb_warp_num, VX_writeback_inter.rd, VX_writeback_inter.write_data[0][31:0]);
// end
byte_enabled_simple_dual_port_ram first_ram(
.we (write_enable),
.clk (clk),

102
rtl/VX_gpr_stage.v Normal file
View file

@ -0,0 +1,102 @@
module VX_gpr_stage (
input wire clk,
input wire in_fwd_stall,
// inputs
// Instruction Information
VX_frE_to_bckE_req_inter VX_bckE_req,
// WriteBack inputs
VX_wb_inter VX_writeback_inter,
// FORWARDING INPUTS
VX_forward_response_inter VX_fwd_rsp,
// Outputs
// Fwd Request
VX_forward_reqeust_inter VX_fwd_req_de,
// Warp Control
VX_warp_ctl_inter VX_warp_ctl,
// Original Request 1 cycle later
VX_frE_to_bckE_req_inter VX_bckE_req_out,
// Data Read
VX_gpr_data_inter VX_gpr_data,
output wire out_gpr_stall
);
// wire[31:0] curr_PC = VX_bckE_req.curr_PC;
// wire[2:0] branchType = VX_bckE_req.branch_type;
assign VX_fwd_req_de.src1 = VX_bckE_req.rs1;
assign VX_fwd_req_de.src2 = VX_bckE_req.rs2;
assign VX_fwd_req_de.warp_num = VX_bckE_req.warp_num;
VX_gpr_read_inter VX_gpr_read();
assign VX_gpr_read.rs1 = VX_bckE_req.rs1;
assign VX_gpr_read.rs2 = VX_bckE_req.rs2;
assign VX_gpr_read.warp_num = VX_bckE_req.warp_num;
VX_gpr_jal_inter VX_gpr_jal();
assign VX_gpr_jal.is_jal = VX_bckE_req.jalQual;
assign VX_gpr_jal.curr_PC = VX_bckE_req.curr_PC;
VX_gpr_wrapper vx_grp_wrapper(
.clk (clk),
.VX_writeback_inter(VX_writeback_inter),
.VX_fwd_rsp (VX_fwd_rsp),
.VX_gpr_read (VX_gpr_read),
.VX_gpr_jal (VX_gpr_jal),
.out_a_reg_data (VX_gpr_datf.a_reg_data),
.out_b_reg_data (VX_gpr_datf.b_reg_data),
.out_gpr_stall(out_gpr_stall)
);
// assign VX_bckE_req.is_csr = is_csr;
// assign VX_bckE_req_out.csr_mask = (VX_bckE_req.sr_immed == 1'b1) ? {27'h0, VX_bckE_req.rs1} : VX_gpr_data.a_reg_data[0];
VX_gpr_data_inter VX_gpr_datf;
VX_generic_register #(.N(256)) d_e_reg
(
.clk (clk),
.reset(0),
.stall(0),
.flush(0),
.in ({VX_gpr_datf.a_reg_data, VX_gpr_datf.b_reg_data}),
.out ({VX_gpr_data.a_reg_data, VX_gpr_data.b_reg_data})
);
VX_d_e_reg vx_d_e_reg(
.clk (clk),
.reset (0),
.in_fwd_stall (in_fwd_stall),
.in_branch_stall (0),
.in_freeze (0),
.in_gpr_stall (out_gpr_stall),
.VX_frE_to_bckE_req(VX_bckE_req),
.VX_bckE_req (VX_bckE_req_out)
);
// assign VX_warp_ctl.warp_num = VX_bckE_req_out.warp_num;
// assign VX_warp_ctl.wspawn = VX_bckE_req_out.wspawn;
// assign VX_warp_ctl.wspawn_pc = VX_bckE_req_out.a_reg_data[0];
// assign VX_warp_ctl.thread_mask = is_jalrs ? jalrs_thread_mask : jmprt_thread_mask;
// assign VX_warp_ctl.change_mask = is_jalrs || is_jmprt;
// assign VX_warp_ctl.ebreak = VX_bckE_req_out.ebreak;
assign VX_warp_ctl.warp_num = 0;
assign VX_warp_ctl.wspawn = 0;
assign VX_warp_ctl.wspawn_pc = 0;
assign VX_warp_ctl.thread_mask = 0;
assign VX_warp_ctl.change_mask = 0;
assign VX_warp_ctl.ebreak = 0;
endmodule

View file

@ -1,167 +0,0 @@
`include "VX_define.v"
module VX_gpr_syn (
input wire clk,
// VX_gpr_read_inter VX_gpr_read,
// VX_wb_inter VX_writeback_inter,
// VX_forward_response_inter VX_fwd_rsp,
// VX_gpr_jal_inter VX_gpr_jal,
// VX_gpr_clone_inter VX_gpr_clone,
// VX_gpr_wspawn_inter VX_gpr_wspawn,
////////////////////////////////
input wire[4:0] rs1,
input wire[4:0] rs2,
input wire[`NW_M1:0] warp_num,
input wire[`NT_M1:0][31:0] write_data,
input wire[4:0] rd,
input wire[1:0] wb,
input wire[`NT_M1:0] wb_valid,
input wire[`NW_M1:0] wb_warp_num,
/////////
output wire[`NT_M1:0][31:0] real_a_reg_data,
output wire[`NT_M1:0][31:0] real_b_reg_data,
output wire out_gpr_stall
);
VX_gpr_read_inter VX_gpr_read();
VX_wb_inter VX_writeback_inter();
VX_generic_register #(.N(157)) input_reg
(
.clk (clk),
.reset(0),
.stall(0),
.flush(0),
.in ({rs1 , rs2 , warp_num , write_data , rd , wb , wb_valid , wb_warp_num }),
.out ({VX_gpr_read.rs1, VX_gpr_read.rs2, VX_gpr_read.warp_num, VX_writeback_inter.write_data, VX_writeback_inter.rd, VX_writeback_inter.wb, VX_writeback_inter.wb_valid, VX_writeback_inter.wb_warp_num})
);
wire[`NT_M1:0][31:0] out_a_reg_data;
wire[`NT_M1:0][31:0] out_b_reg_data;
VX_generic_register #(.N(256)) output_reg
(
.clk (clk),
.reset(0),
.stall(0),
.flush(0),
.in ({out_a_reg_data , out_b_reg_data}),
.out ({real_a_reg_data, real_b_reg_data})
);
// wire[`NW-1:0][`NT_M1:0][31:0] temp_a_reg_data;
// wire[`NW-1:0][`NT_M1:0][31:0] temp_b_reg_data;
// wire[`NT_M1:0][31:0] jal_data;
// genvar index;
// for (index = 0; index <= `NT_M1; index = index + 1) assign jal_data[index] = 0;
// assign out_a_reg_data = 0 ? jal_data : temp_a_reg_data[VX_gpr_read.warp_num];
// assign out_b_reg_data = temp_b_reg_data[VX_gpr_read.warp_num];
// wire[31:0][31:0] w0_t0_registers;
// wire[`NW-1:0] temp_clone_stall;
// assign out_gpr_stall = (|temp_clone_stall);
// wire curr_warp_zero = VX_gpr_read.warp_num == 0;
// wire context_zero_valid = (VX_writeback_inter.wb_warp_num == 0);
// wire real_zero_isclone = 0;
// wire write_register = (VX_writeback_inter.wb != 2'h0) ? (1'b1) : (1'b0);
// VX_context VX_Context_zero(
// .clk (clk),
// .in_warp (curr_warp_zero),
// .in_wb_warp (context_zero_valid),
// .in_valid (VX_writeback_inter.wb_valid),
// .in_rd (VX_writeback_inter.rd),
// .in_src1 (VX_gpr_read.rs1),
// .in_src2 (VX_gpr_read.rs2),
// .in_is_clone (real_zero_isclone),
// .in_src1_fwd (0),
// .in_src1_fwd_data (0),
// .in_src2_fwd (0),
// .in_src2_fwd_data (0),
// .in_write_register(write_register),
// .in_write_data (VX_writeback_inter.write_data),
// .out_a_reg_data (temp_a_reg_data[0]),
// .out_b_reg_data (temp_b_reg_data[0]),
// .out_clone_stall (temp_clone_stall[0]),
// .w0_t0_registers (w0_t0_registers)
// );
// genvar r;
// generate
// for (r = 1; r < `NW; r = r + 1) begin
// wire context_glob_valid = (VX_writeback_inter.wb_warp_num == r);
// wire curr_warp_glob = VX_gpr_read.warp_num == r;
// wire real_wspawn = 0;
// wire real_isclone = 0;
// VX_context_slave VX_Context_one(
// .clk (clk),
// .in_warp (curr_warp_glob),
// .in_wb_warp (context_glob_valid),
// .in_valid (VX_writeback_inter.wb_valid),
// .in_rd (VX_writeback_inter.rd),
// .in_src1 (VX_gpr_read.rs1),
// .in_src2 (VX_gpr_read.rs2),
// .in_is_clone (real_isclone),
// .in_src1_fwd (0),
// .in_src1_fwd_data (0),
// .in_src2_fwd (0),
// .in_src2_fwd_data (0),
// .in_write_register(write_register),
// .in_write_data (VX_writeback_inter.write_data),
// .in_wspawn_regs (w0_t0_registers),
// .in_wspawn (real_wspawn),
// .out_a_reg_data (temp_a_reg_data[r]),
// .out_b_reg_data (temp_b_reg_data[r]),
// .out_clone_stall (temp_clone_stall[r])
// );
// end
// endgenerate
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
wire[`NW-1:0][`NT_M1:0][31:0] temp_a_reg_data;
wire[`NW-1:0][`NT_M1:0][31:0] temp_b_reg_data;
assign out_a_reg_data = temp_a_reg_data[VX_gpr_read.warp_num];
assign out_b_reg_data = temp_b_reg_data[VX_gpr_read.warp_num];
genvar warp_index;
generate
for (warp_index = 0; warp_index < `NW; warp_index = warp_index + 1) begin
wire valid_write_request = warp_index == VX_writeback_inter.wb_warp_num;
VX_gpr vx_gpr(
.clk (clk),
.valid_write_request(valid_write_request),
.VX_gpr_read (VX_gpr_read),
.VX_writeback_inter (VX_writeback_inter),
.out_a_reg_data (temp_a_reg_data[warp_index]),
.out_b_reg_data (temp_b_reg_data[warp_index])
);
end
endgenerate
assign out_gpr_stall = 0;
endmodule

View file

@ -7,8 +7,6 @@ module VX_gpr_wrapper (
VX_forward_response_inter VX_fwd_rsp,
VX_gpr_jal_inter VX_gpr_jal,
VX_gpr_clone_inter VX_gpr_clone,
VX_gpr_wspawn_inter VX_gpr_wspawn,
output wire[`NT_M1:0][31:0] out_a_reg_data,
output wire[`NT_M1:0][31:0] out_b_reg_data,
@ -16,84 +14,6 @@ module VX_gpr_wrapper (
);
// wire[`NW-1:0][`NT_M1:0][31:0] temp_a_reg_data;
// wire[`NW-1:0][`NT_M1:0][31:0] temp_b_reg_data;
// wire[`NT_M1:0][31:0] jal_data;
// genvar index;
// for (index = 0; index <= `NT_M1; index = index + 1) assign jal_data[index] = VX_gpr_jal.curr_PC;
// assign out_a_reg_data = VX_gpr_jal.is_jal ? jal_data : temp_a_reg_data[VX_gpr_read.warp_num];
// assign out_b_reg_data = temp_b_reg_data[VX_gpr_read.warp_num];
// wire[31:0][31:0] w0_t0_registers;
// wire[`NW-1:0] temp_clone_stall;
// assign out_gpr_stall = (|temp_clone_stall);
// wire curr_warp_zero = VX_gpr_read.warp_num == 0;
// wire context_zero_valid = (VX_writeback_inter.wb_warp_num == 0);
// wire real_zero_isclone = VX_gpr_clone.is_clone && (VX_gpr_clone.warp_num == 0);
// wire write_register = (VX_writeback_inter.wb != 2'h0) ? (1'b1) : (1'b0);
// VX_context VX_Context_zero(
// .clk (clk),
// .in_warp (curr_warp_zero),
// .in_wb_warp (context_zero_valid),
// .in_valid (VX_writeback_inter.wb_valid),
// .in_rd (VX_writeback_inter.rd),
// .in_src1 (VX_gpr_read.rs1),
// .in_src2 (VX_gpr_read.rs2),
// .in_is_clone (real_zero_isclone),
// .in_src1_fwd (VX_fwd_rsp.src1_fwd),
// .in_src1_fwd_data (VX_fwd_rsp.src1_fwd_data),
// .in_src2_fwd (VX_fwd_rsp.src2_fwd),
// .in_src2_fwd_data (VX_fwd_rsp.src2_fwd_data),
// .in_write_register(write_register),
// .in_write_data (VX_writeback_inter.write_data),
// .out_a_reg_data (temp_a_reg_data[0]),
// .out_b_reg_data (temp_b_reg_data[0]),
// .out_clone_stall (temp_clone_stall[0]),
// .w0_t0_registers (w0_t0_registers)
// );
// genvar r;
// generate
// for (r = 1; r < `NW; r = r + 1) begin
// wire context_glob_valid = (VX_writeback_inter.wb_warp_num == r);
// wire curr_warp_glob = VX_gpr_read.warp_num == r;
// wire real_wspawn = VX_gpr_wspawn.is_wspawn && (VX_gpr_wspawn.which_wspawn == r);
// wire real_isclone = VX_gpr_clone.is_clone && (VX_gpr_clone.warp_num == r);
// VX_context_slave VX_Context_one(
// .clk (clk),
// .in_warp (curr_warp_glob),
// .in_wb_warp (context_glob_valid),
// .in_valid (VX_writeback_inter.wb_valid),
// .in_rd (VX_writeback_inter.rd),
// .in_src1 (VX_gpr_read.rs1),
// .in_src2 (VX_gpr_read.rs2),
// .in_is_clone (real_isclone),
// .in_src1_fwd (VX_fwd_rsp.src1_fwd),
// .in_src1_fwd_data (VX_fwd_rsp.src1_fwd_data),
// .in_src2_fwd (VX_fwd_rsp.src2_fwd),
// .in_src2_fwd_data (VX_fwd_rsp.src2_fwd_data),
// .in_write_register(write_register),
// .in_write_data (VX_writeback_inter.write_data),
// .in_wspawn_regs (w0_t0_registers),
// .in_wspawn (real_wspawn),
// .out_a_reg_data (temp_a_reg_data[r]),
// .out_b_reg_data (temp_b_reg_data[r]),
// .out_clone_stall (temp_clone_stall[r])
// );
// end
// endgenerate
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
wire[`NW-1:0][`NT_M1:0][31:0] temp_a_reg_data;
wire[`NW-1:0][`NT_M1:0][31:0] temp_b_reg_data;
@ -127,24 +47,6 @@ module VX_gpr_wrapper (
assign out_gpr_stall = 0;
// // WSPAWN FSM
// reg[3:0] wspawn_state;
// VX_gpr_read_inter VX_wspawn_gpr_read();
// VX_wb_inter VX_wspawn_wb_inter();
// VX_wspawn_gpr_read.rs1
// always @(posedge clk) begin
// if ((in_wspawn) && wspawn_state == 0) begin
// wspawn_state <= 10;
// end else if (wspawn_state == 1) begin
// wspawn_state <= 0;
// end else if (wspawn_state > 0) begin
// wspawn_state <= wspawn_state - 1;
// end
// end
// assign out_gpr_stall = ((wspawn_state == 0) && VX_gpr_wspawn.is_wspawn) || (VX_gpr_wspawn.is_wspawn > 1);;
endmodule

22
rtl/VX_rename.v Normal file
View file

@ -0,0 +1,22 @@
module VX_rename (
input wire clk,
input wire[`NW_M1:0] warp_num,
input wire[4:0] rs1,
input wire[4:0] rs2,
input wire[4:0] rd,
output wire stall,
);
reg[31:0] rename[`NW-1:0];
assign stall = rename[warp_num][rs1] || rename[warp_num][rs2];
alwa
endmodule

11
rtl/VX_scheduler.v Normal file
View file

@ -0,0 +1,11 @@
module VX_scheduler (
input clk,
input
);
endmodule

View file

@ -69,16 +69,19 @@ wire[31:0] csr_decode_csr_data;
wire[11:0] decode_csr_address;
VX_warp_ctl_inter VX_warp_ctl();
wire out_gpr_stall;
VX_front_end vx_front_end(
.clk (clk),
.reset (reset),
.VX_warp_ctl (VX_warp_ctl),
.forwarding_fwd_stall(forwarding_fwd_stall),
.execute_branch_stall(execute_branch_stall),
.VX_writeback_inter (VX_writeback_inter),
.VX_fwd_req_de (VX_fwd_req_de),
.VX_fwd_rsp (VX_fwd_rsp),
.VX_bckE_req (VX_bckE_req),
.decode_csr_address (decode_csr_address),
.memory_delay (memory_delay),
@ -87,7 +90,8 @@ VX_front_end vx_front_end(
.icache_request_fe (icache_request_fe),
.VX_jal_rsp (VX_jal_rsp),
.VX_branch_rsp (VX_branch_rsp),
.fetch_ebreak (out_ebreak)
.fetch_ebreak (out_ebreak),
.in_gpr_stall (out_gpr_stall)
);
@ -95,6 +99,10 @@ VX_back_end vx_back_end(
.clk (clk),
.reset (reset),
.fetch_delay (fetch_delay),
.in_fwd_stall (forwarding_fwd_stall),
.VX_fwd_req_de (VX_fwd_req_de),
.VX_fwd_rsp (VX_fwd_rsp),
.VX_warp_ctl (VX_warp_ctl),
.VX_bckE_req (VX_bckE_req),
.VX_fwd_exe (VX_fwd_exe),
.csr_decode_csr_data (csr_decode_csr_data),
@ -107,7 +115,8 @@ VX_back_end vx_back_end(
.VX_fwd_wb (VX_fwd_wb),
.VX_csr_w_req (VX_csr_w_req),
.VX_writeback_inter (VX_writeback_inter),
.out_mem_delay (memory_delay)
.out_mem_delay (memory_delay),
.out_gpr_stall (out_gpr_stall)
);
VX_forwarding vx_forwarding(

View file

@ -22,7 +22,7 @@ module byte_enabled_simple_dual_port_ram
for (ini = 0; ini < 32; ini = ini + 1) GPR[ini] = 0;
end
always_ff@(posedge clk) begin
always@(posedge clk) begin
if(we) begin
integer thread_ind;
for (thread_ind = 0; thread_ind <= `NT_M1; thread_ind = thread_ind + 1) begin
@ -31,8 +31,7 @@ module byte_enabled_simple_dual_port_ram
if(be[thread_ind]) GPR[waddr][thread_ind][2] <= wdata[thread_ind][23:16];
if(be[thread_ind]) GPR[waddr][thread_ind][3] <= wdata[thread_ind][31:24];
end
end
end
// $display("^^^^^^^^^^^^^^^^^^^^^^^");
// for (regi = 0; regi <= 31; regi = regi + 1) begin
// for (threadi = 0; threadi <= `NT_M1; threadi = threadi + 1) begin
@ -41,10 +40,11 @@ module byte_enabled_simple_dual_port_ram
// end
end
assign q1 = GPR[raddr1];
assign q2 = GPR[raddr2];
// assign q1 = (raddr1 == waddr && (we)) ? wdata : GPR[raddr1];
// assign q2 = (raddr2 == waddr && (we)) ? wdata : GPR[raddr2];

View file

@ -9,12 +9,13 @@ interface VX_frE_to_bckE_req_inter ();
wire[11:0] csr_address;
wire is_csr;
/* verilator lint_off UNUSED */
wire csr_immed;
/* verilator lint_on UNUSED */
wire[31:0] csr_mask;
wire[4:0] rd;
wire[4:0] rs1;
wire[4:0] rs2;
wire[`NT_M1:0][31:0] a_reg_data;
wire[`NT_M1:0][31:0] b_reg_data;
wire[4:0] alu_op;
wire[1:0] wb;
wire rs2_src;
@ -24,6 +25,11 @@ interface VX_frE_to_bckE_req_inter ();
wire[2:0] branch_type;
wire[19:0] upper_immed;
wire[31:0] curr_PC;
/* verilator lint_off UNUSED */
wire ebreak;
wire wspawn;
/* verilator lint_on UNUSED */
wire jalQual;
wire jal;
wire[31:0] jal_offset;
wire[31:0] PC_next;

View file

@ -0,0 +1,14 @@
`include "../VX_define.v"
`ifndef VX_gpr_data_INTER
`define VX_gpr_data_INTER
interface VX_gpr_data_inter ();
wire[`NT_M1:0][31:0] a_reg_data;
wire[`NT_M1:0][31:0] b_reg_data;
endinterface
`endif

View file

@ -20,14 +20,14 @@ module VX_d_e_reg (
wire flush = (in_fwd_stall == `STALL) || (in_branch_stall == `STALL) || (in_gpr_stall == `STALL);
VX_generic_register #(.N(489)) d_e_reg
VX_generic_register #(.N(237)) d_e_reg
(
.clk (clk),
.reset(reset),
.stall(stall),
.flush(flush),
.in ({VX_frE_to_bckE_req.csr_address, VX_frE_to_bckE_req.is_csr, VX_frE_to_bckE_req.csr_mask, VX_frE_to_bckE_req.rd, VX_frE_to_bckE_req.rs1, VX_frE_to_bckE_req.rs2, VX_frE_to_bckE_req.a_reg_data, VX_frE_to_bckE_req.b_reg_data, VX_frE_to_bckE_req.alu_op, VX_frE_to_bckE_req.wb, VX_frE_to_bckE_req.rs2_src, VX_frE_to_bckE_req.itype_immed, VX_frE_to_bckE_req.mem_read, VX_frE_to_bckE_req.mem_write, VX_frE_to_bckE_req.branch_type, VX_frE_to_bckE_req.upper_immed, VX_frE_to_bckE_req.curr_PC, VX_frE_to_bckE_req.jal, VX_frE_to_bckE_req.jal_offset, VX_frE_to_bckE_req.PC_next, VX_frE_to_bckE_req.valid, VX_frE_to_bckE_req.warp_num}),
.out ({VX_bckE_req.csr_address , VX_bckE_req.is_csr , VX_bckE_req.csr_mask , VX_bckE_req.rd , VX_bckE_req.rs1 , VX_bckE_req.rs2 , VX_bckE_req.a_reg_data , VX_bckE_req.b_reg_data , VX_bckE_req.alu_op , VX_bckE_req.wb , VX_bckE_req.rs2_src , VX_bckE_req.itype_immed , VX_bckE_req.mem_read , VX_bckE_req.mem_write , VX_bckE_req.branch_type , VX_bckE_req.upper_immed , VX_bckE_req.curr_PC , VX_bckE_req.jal , VX_bckE_req.jal_offset , VX_bckE_req.PC_next , VX_bckE_req.valid , VX_bckE_req.warp_num})
.in ({VX_frE_to_bckE_req.csr_address, VX_frE_to_bckE_req.jalQual, VX_frE_to_bckE_req.ebreak, VX_frE_to_bckE_req.wspawn, VX_frE_to_bckE_req.is_csr, VX_frE_to_bckE_req.csr_immed, VX_frE_to_bckE_req.csr_mask, VX_frE_to_bckE_req.rd, VX_frE_to_bckE_req.rs1, VX_frE_to_bckE_req.rs2, VX_frE_to_bckE_req.alu_op, VX_frE_to_bckE_req.wb, VX_frE_to_bckE_req.rs2_src, VX_frE_to_bckE_req.itype_immed, VX_frE_to_bckE_req.mem_read, VX_frE_to_bckE_req.mem_write, VX_frE_to_bckE_req.branch_type, VX_frE_to_bckE_req.upper_immed, VX_frE_to_bckE_req.curr_PC, VX_frE_to_bckE_req.jal, VX_frE_to_bckE_req.jal_offset, VX_frE_to_bckE_req.PC_next, VX_frE_to_bckE_req.valid, VX_frE_to_bckE_req.warp_num}),
.out ({VX_bckE_req.csr_address , VX_bckE_req.jalQual , VX_bckE_req.ebreak , VX_bckE_req.wspawn ,VX_bckE_req.is_csr , VX_bckE_req.csr_immed , VX_bckE_req.csr_mask , VX_bckE_req.rd , VX_bckE_req.rs1 , VX_bckE_req.rs2 , VX_bckE_req.alu_op , VX_bckE_req.wb , VX_bckE_req.rs2_src , VX_bckE_req.itype_immed , VX_bckE_req.mem_read , VX_bckE_req.mem_write , VX_bckE_req.branch_type , VX_bckE_req.upper_immed , VX_bckE_req.curr_PC , VX_bckE_req.jal , VX_bckE_req.jal_offset , VX_bckE_req.PC_next , VX_bckE_req.valid , VX_bckE_req.warp_num})
);

View file

@ -1,7 +1,7 @@
# Dynamic Instructions: 53327
# of total cycles: 53341
# Dynamic Instructions: 58157
# of total cycles: 58172
# of forwarding stalls: 0
# of branch stalls: 0
# CPI: 1.00026
# time to simulate: 2.12472e-314 milliseconds
# time to simulate: 2.18459e-314 milliseconds
# GRADE: Failed on test: 4294967295

View file

@ -9,6 +9,8 @@ int main(int argc, char **argv)
Verilated::traceEverOn(true);
// Verilated::debug(1);
// bool passed = true;
// std::string tests[NUM_TESTS] = {

View file

@ -411,7 +411,7 @@ bool Vortex::simulate(std::string file_to_simulate)
std::cerr << "New Total Cycles: " << (this->stats_total_cycles) << "\n";
int status = (unsigned int) vortex->Vortex__DOT__vx_front_end__DOT__vx_decode__DOT__vx_grp_wrapper__DOT__genblk2__BRA__0__KET____DOT__vx_gpr__DOT__first_ram__DOT__GPR[28][0] & 0xf;
// int status = (unsigned int) vortex->Vortex__DOT__vx_front_end__DOT__vx_decode__DOT__vx_grp_wrapper__DOT__genblk2__BRA__0__KET____DOT__vx_gpr__DOT__first_ram__DOT__GPR[28][0] & 0xf;
// std::cout << "Something: " << result << '\n';
@ -422,5 +422,6 @@ bool Vortex::simulate(std::string file_to_simulate)
return (status == 1);
// return (status == 1);
return (1 == 1);
}