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https://github.com/openhwgroup/cvw
synced 2025-01-24 13:34:28 +00:00
make testbench successfully deactivate TimerIntM so as to create a nice pulse
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@ -126,6 +126,7 @@ module testbench();
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string ExpectedCSRArrayW[10:0];
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logic [`XLEN-1:0] ExpectedCSRArrayValueW[10:0];
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logic [`XLEN-1:0] ExpectedIntType;
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logic forcedInterrupt;
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integer NumCSRMIndex;
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integer NumCSRWIndex;
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integer NumCSRPostWIndex;
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@ -207,61 +208,59 @@ module testbench();
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#2;
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while(TokenIndex > MarkerIndex) begin
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// parse the GPR
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if (ExpectedTokens[MarkerIndex] == "GPR") begin
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RegWriteM = ExpectedTokens[MarkerIndex];
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%d", ExpectedRegAdrM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedRegValueM);
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MarkerIndex += 3;
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// parse the GPR
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if (ExpectedTokens[MarkerIndex] == "GPR") begin
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RegWriteM = ExpectedTokens[MarkerIndex];
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%d", ExpectedRegAdrM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedRegValueM);
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MarkerIndex += 3;
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// parse memory address, read data, and/or write data
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end else if(ExpectedTokens[MarkerIndex].substr(0, 2) == "Mem") begin
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MemOpM = ExpectedTokens[MarkerIndex];
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedMemAdrM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedMemWriteDataM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+3], "%x", ExpectedMemReadDataM);
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// parse memory address, read data, and/or write data
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end else if(ExpectedTokens[MarkerIndex].substr(0, 2) == "Mem") begin
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MemOpM = ExpectedTokens[MarkerIndex];
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedMemAdrM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+2], "%x", ExpectedMemWriteDataM);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+3], "%x", ExpectedMemReadDataM);
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MarkerIndex += 4;
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MarkerIndex += 4;
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// parse CSRs, because there are 1 or more CSRs after the CSR token
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// we check if the CSR token or the number of CSRs is greater than 0.
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// if so then we want to parse for a CSR.
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end else if(ExpectedTokens[MarkerIndex] == "CSR" || NumCSRM > 0) begin
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if(ExpectedTokens[MarkerIndex] == "CSR") begin
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// all additional CSR's won't have this token.
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MarkerIndex++;
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end
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matchCount = $sscanf(ExpectedTokens[MarkerIndex], "%s", ExpectedCSRArrayM[NumCSRM]);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedCSRArrayValueM[NumCSRM]);
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// parse CSRs, because there are 1 or more CSRs after the CSR token
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// we check if the CSR token or the number of CSRs is greater than 0.
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// if so then we want to parse for a CSR.
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end else if(ExpectedTokens[MarkerIndex] == "CSR" || NumCSRM > 0) begin
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if(ExpectedTokens[MarkerIndex] == "CSR") begin
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// all additional CSR's won't have this token.
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MarkerIndex++;
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end
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matchCount = $sscanf(ExpectedTokens[MarkerIndex], "%s", ExpectedCSRArrayM[NumCSRM]);
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matchCount = $sscanf(ExpectedTokens[MarkerIndex+1], "%x", ExpectedCSRArrayValueM[NumCSRM]);
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MarkerIndex += 2;
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MarkerIndex += 2;
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// if we get an xcause with the interrupt bit set we must generate an interrupt as interrupts
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// are imprecise. Forcing the trap at this time will allow wally to track what qemu does.
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// the msb of xcause will be set.
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// bits 1:0 select mode; 0 = user, 1 = superviser, 3 = machine
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// bits 3:2 select the type of interrupt, 0 = software, 1 = timer, 2 = external
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if(ExpectedCSRArrayM[NumCSRM].substr(1, 5) == "cause" && (ExpectedCSRArrayValueM[NumCSRM][`XLEN-1] == 1'b1)) begin
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//what type?
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ExpectedIntType = ExpectedCSRArrayValueM[NumCSRM] & 64'h0000_000C;
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$display("%tns, %d instrs: CSR = %s. Forcing interrupt of cause = %x", $time, InstrCountW, ExpectedCSRArrayM[NumCSRM], ExpectedCSRArrayValueM[NumCSRM]);
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if(ExpectedIntType == 0) begin
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force dut.hart.priv.SwIntM = 1'b1;
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$display("Force SwIntM");
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// if we get an xcause with the interrupt bit set we must generate an interrupt as interrupts
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// are imprecise. Forcing the trap at this time will allow wally to track what qemu does.
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// the msb of xcause will be set.
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// bits 1:0 select mode; 0 = user, 1 = superviser, 3 = machine
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// bits 3:2 select the type of interrupt, 0 = software, 1 = timer, 2 = external
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if(ExpectedCSRArrayM[NumCSRM].substr(1, 5) == "cause" && (ExpectedCSRArrayValueM[NumCSRM][`XLEN-1] == 1'b1)) begin
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//what type?
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ExpectedIntType = ExpectedCSRArrayValueM[NumCSRM] & 64'h0000_000C;
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$display("%tns, %d instrs: CSR = %s. Forcing interrupt of cause = %x", $time, InstrCountW, ExpectedCSRArrayM[NumCSRM], ExpectedCSRArrayValueM[NumCSRM]);
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forcedInterrupt = 1;
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if(ExpectedIntType == 0) begin
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force dut.hart.priv.SwIntM = 1'b1;
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$display("Force SwIntM");
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end else if(ExpectedIntType == 4) begin
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force dut.hart.priv.TimerIntM = 1'b1;
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$display("Force TimeIntM");
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end else if(ExpectedIntType == 8) begin
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force dut.hart.priv.ExtIntM = 1'b1;
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$display("Force ExtIntM");
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end else forcedInterrupt = 0;
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end
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NumCSRM++;
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end
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else if(ExpectedIntType == 4) begin
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force dut.hart.priv.TimerIntM = 1'b1;
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$display("Force TimeIntM");
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end
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else if(ExpectedIntType == 8) begin
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force dut.hart.priv.ExtIntM = 1'b1;
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$display("Force ExtIntM");
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end
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end
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NumCSRM++;
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end
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end
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// override on special conditions
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if (ExpectedMemAdrM == 'h10000005) begin
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@ -338,24 +337,19 @@ module testbench();
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end
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// force interrupts to 0
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for(NumCSRMIndex = 0; NumCSRMIndex < NumCSRM; NumCSRMIndex++) begin
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if(ExpectedCSRArrayM[NumCSRMIndex].substr(1, 5) == "cause" && (ExpectedCSRArrayValueM[NumCSRMIndex][`XLEN-1] == 1'b1)) begin
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//what type?
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ExpectedIntType = ExpectedCSRArrayValueM[NumCSRM] & 64'h0000_000C;
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$display("%tns, %d instrs: CSR = %s. Forcing interrupt of cause = %x back to 0", $time, InstrCountW, ExpectedCSRArrayM[NumCSRM], ExpectedCSRArrayValueM[NumCSRM]);
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if(ExpectedIntType == 0) begin
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force dut.hart.priv.SwIntM = 1'b0;
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$display("Force SwIntM");
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end
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else if(ExpectedIntType == 4) begin
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force dut.hart.priv.TimerIntM = 1'b0;
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$display("Force TimeIntM");
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end
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else if(ExpectedIntType == 8) begin
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force dut.hart.priv.ExtIntM = 1'b0;
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$display("Force ExtIntM");
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end
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if (forcedInterrupt) begin
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forcedInterrupt = 0;
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if(ExpectedIntType == 0) begin
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force dut.hart.priv.SwIntM = 1'b0;
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$display("Force SwIntM");
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end
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else if(ExpectedIntType == 4) begin
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force dut.hart.priv.TimerIntM = 1'b0;
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$display("Force TimeIntM");
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end
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else if(ExpectedIntType == 8) begin
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force dut.hart.priv.ExtIntM = 1'b0;
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$display("Force ExtIntM");
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end
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end
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end
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