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Simplification to EBU.

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This commit is contained in:
Ross Thompson 2022-09-29 18:06:34 -05:00
parent d81af3bca8
commit 58d597b614
2 changed files with 4 additions and 5 deletions
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3
pipelined/src/ebu/controllerinputstage.sv
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@ -40,7 +40,7 @@ module controllerinputstage
(input logic HCLK,
input logic HRESETn,
input logic Save, Restore, Disable,
output logic Request, Active,
output logic Request,
// controller input
input logic HWRITEin,
input logic [2:0] HSIZEin,
@ -73,7 +73,6 @@ module controllerinputstage
assign Request = HTRANSOut != 2'b00;
assign HREADYOut = HREADYin & ~Disable;
assign Active = Request & HREADYOut;
endmodule

6
pipelined/src/ebu/ebu.sv
View File

@ -109,7 +109,7 @@ module ebu
// input stage IFU
controllerinputstage IFUInput(.HCLK, .HRESETn, .Save(save[0]), .Restore(restore[0]), .Disable(dis[0]),
.Request(IFUReq), .Active(IFUActive),
.Request(IFUReq),
.HWRITEin(1'b0), .HSIZEin(IFUHSIZE), .HBURSTin(IFUHBURST), .HTRANSin(IFUHTRANS), .HADDRin(IFUHADDR),
.HWRITEOut(IFUHWRITEOut), .HSIZEOut(IFUHSIZEOut), .HBURSTOut(IFUHBURSTOut), .HREADYOut(IFUHREADY),
.HTRANSOut(IFUHTRANSOut), .HADDROut(IFUHADDROut), .HREADYin(HREADY));
@ -117,7 +117,7 @@ module ebu
// input stage LSU
// LSU always has priority so there should never be a need to save and restore the address phase inputs.
controllerinputstage LSUInput(.HCLK, .HRESETn, .Save(save[1]), .Restore(restore[1]), .Disable(dis[1]),
.Request(LSUReq), .Active(LSUActive),
.Request(LSUReq),
.HWRITEin(LSUHWRITE), .HSIZEin(LSUHSIZE), .HBURSTin(LSUHBURST), .HTRANSin(LSUHTRANS), .HADDRin(LSUHADDR), .HREADYOut(LSUHREADY),
.HWRITEOut(LSUHWRITEOut), .HSIZEOut(LSUHSIZEOut), .HBURSTOut(LSUHBURSTOut),
.HTRANSOut(LSUHTRANSOut), .HADDROut(LSUHADDROut), .HREADYin(HREADY));
@ -138,7 +138,7 @@ module ebu
// FSM decides if arbitration needed. Arbitration is held until the last beat of
// a burst is completed.
assign both = LSUActive & IFUActive;
assign both = LSUReq & IFUReq;
flopenl #(.TYPE(statetype)) busreg(HCLK, ~HRESETn, 1'b1, NextState, IDLE, CurrState);
always_comb
case (CurrState)