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testbench_wb.v: unify verbose output with axi testbench 

Unification of testbench output makes it possible to use the diff
utility for comparing testbench instruction traces.

Alas the testbench and testbench_wb traces are differ
because of interrupts, e.g.

    picorv32$ make testbench_wb.vvp
    iverilog -o testbench_wb.vvp -DCOMPRESSED_ISA -DRISCV_FORMAL testbench_wb.v picorv32.v
    chmod -x testbench_wb.vvp
    picorv32$ make testbench.vvp
    iverilog -o testbench.vvp -DCOMPRESSED_ISA -DRISCV_FORMAL testbench.v picorv32.v
    chmod -x testbench.vvp
    picorv32$ vvp -N testbench_wb.vvp +verbose | head -n 856 > /tmp/testbench_wb.log
    picorv32$ vvp -N testbench.vvp +verbose | head -n 856 > /tmp/testbench.log
    picorv32$ diff -u /tmp/testbench.log /tmp/testbench_wb.log
    --- /tmp/testbench.log  2017-04-06 06:56:06.079804549 +0300
    +++ /tmp/testbench_wb.log       2017-04-06 06:55:58.763485130 +0300
    @@ -850,7 +850,7 @@
     RD: ADDR=000056a0 DATA=00000013 INSN
     RD: ADDR=000056a4 DATA=fff00113 INSN
     RD: ADDR=000056a8 DATA=00000013 INSN
    -RD: ADDR=000056ac DATA=14208463 INSN  <--- testbench: no interrupt
    -RD: ADDR=000056b0 DATA=00120213 INSN
    -RD: ADDR=000056b4 DATA=00200293 INSN
    -RD: ADDR=000056b8 DATA=fe5212e3 INSN
    +RD: ADDR=00000010 DATA=0200a10b INSN  <--- testbench_wb: interrupt
    +RD: ADDR=00000014 DATA=0201218b INSN
    +RD: ADDR=00000018 DATA=000000b7 INSN
    +RD: ADDR=0000001c DATA=16008093 INSN

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
This commit is contained in:
Antony Pavlov 2017-04-06 06:56:39 +03:00
parent 2c6cbcf72f
commit 7c852571f0
2 changed files with 25 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
picorv32.v
View File

@ -2610,13 +2610,14 @@ module picorv32_wb #(
// Trace Interface
output trace_valid,
output [35:0] trace_data
output [35:0] trace_data,
output mem_instr
);
wire mem_valid;
wire [31:0] mem_addr;
wire [31:0] mem_wdata;
wire [ 3:0] mem_wstrb;
wire mem_instr;
reg mem_ready;
reg [31:0] mem_rdata;

29
testbench_wb.v
View File

@ -68,6 +68,7 @@ module picorv32_wrapper #(
);
wire tests_passed;
reg [31:0] irq;
wire mem_instr;
always @* begin
irq = 0;
@ -101,6 +102,7 @@ module picorv32_wrapper #(
.wb_sel_i(wb_m2s_sel),
.wb_we_i(wb_m2s_we),
.mem_instr(mem_instr),
.tests_passed(tests_passed)
);
@ -122,6 +124,7 @@ module picorv32_wrapper #(
.irq (irq),
.trace_valid (trace_valid),
.trace_data (trace_data),
.mem_instr(mem_instr),
.wb_clk_i(wb_clk),
.wb_rst_i(wb_rst),
@ -175,6 +178,7 @@ module wb_ram #(
output reg wb_ack_o,
output reg [31:0] wb_dat_o,
input mem_instr,
output reg tests_passed
);
@ -209,13 +213,28 @@ module wb_ram #(
reg [31:0] mem [0:depth/4-1] /* verilator public */;
always @(posedge wb_clk_i) begin
if (ram_we)
if (ram_we) begin
if (verbose)
$display("WR: ADDR=%08x DATA=%08x STRB=%04b",
adr_r, wb_dat_i, we);
if (adr_r[31:0] == 32'h1000_0000)
$write("%c", wb_dat_i[7:0]);
if (verbose) begin
if (32 <= wb_dat_i[7:0] && wb_dat_i[7:0] < 128)
$display("OUT: '%c'", wb_dat_i[7:0]);
else
$display("OUT: %3d", wb_dat_i[7:0]);
end else begin
$write("%c", wb_dat_i[7:0]);
`ifndef VERILATOR
$fflush();
`endif
end
else
if (adr_r[31:0] == 32'h2000_0000)
if (wb_dat_i[31:0] == 123456789)
tests_passed = 1;
end
end
always @(posedge wb_clk_i) begin
@ -232,15 +251,11 @@ module wb_ram #(
if (we[3])
mem[waddr2][31:24] <= wb_dat_i[31:24];
if (ram_we)
if (verbose)
$display("WR: ADDR=%08x DATA=%08x STRB=%04b",
adr_r, wb_dat_i, we);
end
if (valid & wb_ack_o & !ram_we)
if (verbose)
$display("RD: ADDR=%08x DATA=%08x%s", adr_r, mem[raddr2], 0 ? " INSN" : "");
$display("RD: ADDR=%08x DATA=%08x%s", adr_r, mem[raddr2], mem_instr ? " INSN" : "");
wb_dat_o <= mem[raddr2];
end