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Rename FP and FPU to F in signal names

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This commit is contained in:
David Harris 2023-01-11 11:46:36 -08:00
parent 15026f61f7
commit d1bfdddd8c
7 changed files with 25 additions and 25 deletions
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4
pipelined/src/fpu/fdivsqrt/fdivsqrt.sv
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@ -47,7 +47,7 @@ module fdivsqrt(
output logic FDivBusyE, IFDivStartE, FDivDoneE,
output logic [`NE+1:0] QeM,
output logic [`DIVb:0] QmM,
output logic [`XLEN-1:0] FPIntDivResultM
output logic [`XLEN-1:0] FIntDivResultM
);
// Floating-point division and square root module, with optional integer division and remainder
@ -97,5 +97,5 @@ module fdivsqrt(
.QmM, .WZeroE, .DivStickyM,
// Int-specific
.nM, .mM, .ALTBM, .AsM, .BZeroM, .NegQuotM, .W64M, .RemOpM(Funct3M[1]), .AM,
.FPIntDivResultM);
.FIntDivResultM);
endmodule

6
pipelined/src/fpu/fdivsqrt/fdivsqrtpostproc.sv
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@ -41,7 +41,7 @@ module fdivsqrtpostproc(
output logic [`DIVb:0] QmM,
output logic WZeroE,
output logic DivStickyM,
output logic [`XLEN-1:0] FPIntDivResultM
output logic [`XLEN-1:0] FIntDivResultM
);
logic [`DIVb+3:0] W, Sum, DM;
@ -129,8 +129,8 @@ module fdivsqrtpostproc(
if (`XLEN==64) begin
mux2 #(64) resmux(IntDivResultM[`XLEN-1:0],
{{(`XLEN-32){IntDivResultM[31]}}, IntDivResultM[31:0]}, // Sign extending in case of W64
W64M, FPIntDivResultM);
W64M, FIntDivResultM);
end else
assign FPIntDivResultM = IntDivResultM[`XLEN-1:0];
assign FIntDivResultM = IntDivResultM[`XLEN-1:0];
end
endmodule

6
pipelined/src/fpu/fhazard.sv
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@ -54,7 +54,7 @@ module fhazard(
// if the result will be FResM (can be taken from the memory stage)
if(FResSelM == 2'b00) ForwardXE = 2'b10; // choose FResM
// if the needed value is in the writeback stage
end else if ((Adr1E == RdW) & FRegWriteW) ForwardXE = 2'b01; // choose FPUResult64W
end else if ((Adr1E == RdW) & FRegWriteW) ForwardXE = 2'b01; // choose FResult64W
// if the needed value is in the memory stage - input 2
@ -62,7 +62,7 @@ module fhazard(
// if the result will be FResM (can be taken from the memory stage)
if(FResSelM == 2'b00) ForwardYE = 2'b10; // choose FResM
// if the needed value is in the writeback stage
end else if ((Adr2E == RdW) & FRegWriteW) ForwardYE = 2'b01; // choose FPUResult64W
end else if ((Adr2E == RdW) & FRegWriteW) ForwardYE = 2'b01; // choose FResult64W
// if the needed value is in the memory stage - input 3
@ -70,7 +70,7 @@ module fhazard(
// if the result will be FResM (can be taken from the memory stage)
if(FResSelM == 2'b00) ForwardZE = 2'b10; // choose FResM
// if the needed value is in the writeback stage
end else if ((Adr3E == RdW) & FRegWriteW) ForwardZE = 2'b01; // choose FPUResult64W
end else if ((Adr3E == RdW) & FRegWriteW) ForwardZE = 2'b01; // choose FResult64W
end

20
pipelined/src/fpu/fpu.sv
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@ -60,7 +60,7 @@ module fpu (
input logic [`FLEN-1:0] ReadDataW, // Read data (from LSU)
output logic [`XLEN-1:0] FCvtIntResW, // convert result to to be written to integer register (to IEU)
output logic FCvtIntW, // select FCvtIntRes (to IEU)
output logic [`XLEN-1:0] FPIntDivResultW // Result from integer division (to IEU)
output logic [`XLEN-1:0] FIntDivResultW // Result from integer division (to IEU)
);
// RISC-V FPU specifics:
@ -133,7 +133,7 @@ module fpu (
logic [`NE+1:0] QeM; // fdivsqrt exponent
logic DivStickyM; // fdivsqrt sticky bit
logic FDivDoneE, IFDivStartE; // fdivsqrt control signals
logic [`XLEN-1:0] FPIntDivResultM; // fdivsqrt integer division result (for IEU)
logic [`XLEN-1:0] FIntDivResultM; // fdivsqrt integer division result (for IEU)
// result and flag signals
logic [`XLEN-1:0] ClassResE; // classify result
@ -147,7 +147,7 @@ module fpu (
logic [`FLEN-1:0] SgnResE; // sign injection result
logic [`FLEN-1:0] PreFpResE, PreFpResM; // selected result that is ready in the memory stage
logic PreNVE, PreNVM; // selected flag that is ready in the memory stage
logic [`FLEN-1:0] FPUResultW; // final FP result being written to the FP register
logic [`FLEN-1:0] FResultW; // final FP result being written to the FP register
// other signals
logic [`FLEN-1:0] AlignedSrcAE; // align SrcA to the floating point format
logic [`FLEN-1:0] BoxedZeroE; // Zero value for Z for multiplication, with NaN boxing if needed
@ -177,7 +177,7 @@ module fpu (
// FP register file
fregfile fregfile (.clk, .reset, .we4(FRegWriteW),
.a1(InstrD[19:15]), .a2(InstrD[24:20]), .a3(InstrD[31:27]),
.a4(RdW), .wd4(FPUResultW),
.a4(RdW), .wd4(FResultW),
.rd1(FRD1D), .rd2(FRD2D), .rd3(FRD3D));
// D/E pipeline registers
@ -203,9 +203,9 @@ module fpu (
.XEnD, .YEnD, .ZEnD, .FPUStallD, .ForwardXE, .ForwardYE, .ForwardZE);
// forwarding muxs
mux3 #(`FLEN) fxemux (FRD1E, FPUResultW, PreFpResM, ForwardXE, XE);
mux3 #(`FLEN) fyemux (FRD2E, FPUResultW, PreFpResM, ForwardYE, PreYE);
mux3 #(`FLEN) fzemux (FRD3E, FPUResultW, PreFpResM, ForwardZE, PreZE);
mux3 #(`FLEN) fxemux (FRD1E, FResultW, PreFpResM, ForwardXE, XE);
mux3 #(`FLEN) fyemux (FRD2E, FResultW, PreFpResM, ForwardYE, PreYE);
mux3 #(`FLEN) fzemux (FRD3E, FResultW, PreFpResM, ForwardZE, PreZE);
generate
@ -268,7 +268,7 @@ module fpu (
.XInfE, .YInfE, .XZeroE, .YZeroE, .XNaNE, .YNaNE, .FDivStartE, .IDivStartE, .XsE,
.ForwardedSrcAE, .ForwardedSrcBE, .Funct3E, .Funct3M, .IntDivE, .W64E,
.StallM, .FlushE, .DivStickyM, .FDivBusyE, .IFDivStartE, .FDivDoneE, .QeM,
.QmM, .FPIntDivResultM /*, .DivDone(DivDoneM) */);
.QmM, .FIntDivResultM /*, .DivDone(DivDoneM) */);
//
// compare
@ -388,7 +388,7 @@ module fpu (
// M/W pipe registers
flopenrc #(`FLEN) MWRegFp(clk, reset, FlushW, ~StallW, FpResM, FpResW);
flopenrc #(`XLEN) MWRegIntCvtRes(clk, reset, FlushW, ~StallW, FCvtIntResM, FCvtIntResW);
flopenrc #(`XLEN) MWRegIntDivRes(clk, reset, FlushW, ~StallW, FPIntDivResultM, FPIntDivResultW);
flopenrc #(`XLEN) MWRegIntDivRes(clk, reset, FlushW, ~StallW, FIntDivResultM, FIntDivResultW);
// BEGIN WRITEBACK STAGE
@ -403,6 +403,6 @@ module fpu (
//////////////////////////////////////////////////////////////////////////////////////////
// select the result to be written to the FP register
mux2 #(`FLEN) FPUResultMux (FpResW, ReadDataW, FResSelW[1], FPUResultW);
mux2 #(`FLEN) FResultMux (FpResW, ReadDataW, FResSelW[1], FResultW);
endmodule // fpu

4
pipelined/src/ieu/datapath.sv
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@ -59,7 +59,7 @@ module datapath (
input logic [`XLEN-1:0] FCvtIntResW,
input logic [`XLEN-1:0] ReadDataW,
input logic [`XLEN-1:0] CSRReadValW, MDUResultW,
input logic [`XLEN-1:0] FPIntDivResultW,
input logic [`XLEN-1:0] FIntDivResultW,
// Hazard Unit signals
output logic [4:0] Rs1D, Rs2D, Rs1E, Rs2E,
output logic [4:0] RdE, RdM, RdW
@ -122,7 +122,7 @@ module datapath (
mux2 #(`XLEN) resultmuxM(IEUResultM, FIntResM, FWriteIntM, IFResultM);
mux2 #(`XLEN) cvtresultmuxW(IFResultW, FCvtIntResW, FCvtIntW, IFCvtResultW);
if (`IDIV_ON_FPU) begin
mux2 #(`XLEN) divresultmuxW(MDUResultW, FPIntDivResultW, IntDivW, MulDivResultW);
mux2 #(`XLEN) divresultmuxW(MDUResultW, FIntDivResultW, IntDivW, MulDivResultW);
end else begin
assign MulDivResultW = MDUResultW;
end

4
pipelined/src/ieu/ieu.sv
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@ -54,7 +54,7 @@ module ieu (
output logic InvalidateICacheM, FlushDCacheM,
// Writeback stage
input logic [`XLEN-1:0] FPIntDivResultW,
input logic [`XLEN-1:0] FIntDivResultW,
input logic [`XLEN-1:0] CSRReadValW, MDUResultW,
input logic [`XLEN-1:0] FCvtIntResW,
output logic [4:0] RdW,
@ -104,7 +104,7 @@ module ieu (
.PCE, .PCLinkE, .FlagsE, .IEUAdrE, .ForwardedSrcAE, .ForwardedSrcBE,
.StallM, .FlushM, .FWriteIntM, .FIntResM, .SrcAM, .WriteDataM, .FCvtIntW,
.StallW, .FlushW, .RegWriteW, .IntDivW, .SquashSCW, .ResultSrcW, .ReadDataW, .FCvtIntResW,
.CSRReadValW, .MDUResultW, .FPIntDivResultW, .Rs1D, .Rs2D, .Rs1E, .Rs2E, .RdE, .RdM, .RdW);
.CSRReadValW, .MDUResultW, .FIntDivResultW, .Rs1D, .Rs2D, .Rs1E, .Rs2E, .RdE, .RdM, .RdW);
forward fw(
.Rs1D, .Rs2D, .Rs1E, .Rs2E, .RdE, .RdM, .RdW,

6
pipelined/src/wally/wallypipelinedcore.sv
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@ -93,7 +93,7 @@ module wallypipelinedcore (
logic FCvtIntStallD;
logic FpLoadStoreM;
logic [4:0] SetFflagsM;
logic [`XLEN-1:0] FPIntDivResultW;
logic [`XLEN-1:0] FIntDivResultW;
// memory management unit signals
logic ITLBWriteF;
@ -223,7 +223,7 @@ module wallypipelinedcore (
.RdE, .RdM, .FIntResM, .InvalidateICacheM, .FlushDCacheM,
// Writeback stage
.CSRReadValW, .MDUResultW, .FPIntDivResultW,
.CSRReadValW, .MDUResultW, .FIntDivResultW,
.RdW, .ReadDataW(ReadDataW[`XLEN-1:0]),
.InstrValidM,
.FCvtIntResW,
@ -401,7 +401,7 @@ module wallypipelinedcore (
.FDivBusyE, // Is the divide/sqrt unit busy (stall execute stage)
.IllegalFPUInstrM, // Is the instruction an illegal fpu instruction
.SetFflagsM, // FPU flags (to privileged unit)
.FPIntDivResultW
.FIntDivResultW
); // floating point unit
end else begin // no F_SUPPORTED or D_SUPPORTED; tie outputs low
assign FPUStallD = 0;