riscv/rocket-chip
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rocket-chip/rocket/src/main/scala/ctrl.scala

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initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
package Top {
import Chisel._
import Node._;
import Constants._
import Instructions._
interface cleanup, major pipeline changes
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class ioCtrlDpath extends Bundle()
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
{
interface cleanup, major pipeline changes
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// outputs to datapath
initial commit of rocket chisel project, riscv assembly tests and benchmarks
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val sel_pc = UFix(3, 'output);
val wen_btb = Bool('output);
val stallf = Bool('output);
val stalld = Bool('output);
val killf = Bool('output);
val killd = Bool('output);
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val killx = Bool('output);
val killm = Bool('output);
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
val ren2 = Bool('output);
val ren1 = Bool('output);
val sel_alu2 = UFix(2, 'output);
val sel_alu1 = Bool('output);
val fn_dw = Bool('output);
val fn_alu = UFix(4, 'output);
val mul_val = Bool('output);
val mul_fn = UFix(3, 'output);
val mul_wb = Bool('output);
val div_val = Bool('output);
val div_fn = UFix(4, 'output);
val div_wb = Bool('output);
val sel_wa = Bool('output);
val sel_wb = UFix(3, 'output);
val ren_pcr = Bool('output);
val wen_pcr = Bool('output);
val xcpt_illegal = Bool('output);
val xcpt_privileged = Bool('output);
val xcpt_fpu = Bool('output);
val xcpt_syscall = Bool('output);
pipeline changes for replay on dcache miss
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val eret = Bool('output);
val mem_load = Bool('output);
interface cleanup, major pipeline changes
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val dcache_miss = Bool('output);
val wen = Bool('output);
// inputs from datapath
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
val btb_hit = Bool('input);
interface cleanup, major pipeline changes
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val inst = Bits(32, 'input);
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
val br_eq = Bool('input);
val br_lt = Bool('input);
val br_ltu = Bool('input);
val div_rdy = Bool('input);
val div_result_val = Bool('input);
val mul_result_val = Bool('input);
interface cleanup, major pipeline changes
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val ex_waddr = UFix(5,'input); // write addr from execute stage
dcache loads working - 1/2 cycle load/use delay depending on load type
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val mem_waddr = UFix(5,'input); // write addr from memory stage
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
val exception = Bool('input);
val status = Bits(8, 'input);
interface cleanup, major pipeline changes
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val sboard_set = Bool('input);
val sboard_seta = UFix(5, 'input);
val sboard_clr0 = Bool('input);
val sboard_clr0a = UFix(5, 'input);
val sboard_clr1 = Bool('input);
val sboard_clr1a = UFix(5, 'input);
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
}
class ioCtrlAll extends Bundle()
{
val dpath = new ioCtrlDpath();
interface cleanup, major pipeline changes
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val console = new ioConsole(List("rdy", "valid"));
val imem = new ioImem(List("req_val", "req_rdy", "resp_val")).flip();
val dmem = new ioDmem(List("req_val", "req_rdy", "req_cmd", "req_type", "resp_val")).flip();
initial commit of rocket chisel project, riscv assembly tests and benchmarks
2011-10-26 08:02:47 +02:00
val host = new ioHost(List("start"));
}
class rocketCtrl extends Component
{
val io = new ioCtrlAll();
val xpr64 = Y;
val cs =
ListLookup(io.dpath.inst,
List( N, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
Array(
BNE-> List(Y, BR_NE, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
ADDI-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
BEQ-> List(Y, BR_EQ, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
BLT-> List(Y, BR_LT, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
BLTU-> List(Y, BR_LTU,REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
BGE-> List(Y, BR_GE, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
BGEU-> List(Y, BR_GEU,REN_Y,REN_Y,A2_RS2, A1_RS1,DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
J-> List(Y, BR_J, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
JAL-> List(Y, BR_J, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RA,WB_PC, REN_N,WEN_N,N,N,N,N),
JALR_C-> List(Y, BR_JR, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_PC, REN_N,WEN_N,N,N,N,N),
JALR_J-> List(Y, BR_JR, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_PC, REN_N,WEN_N,N,N,N,N),
JALR_R-> List(Y, BR_JR, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_PC, REN_N,WEN_N,N,N,N,N),
LB-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_B, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LH-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_H, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LW-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LD-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LBU-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_BU,N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LHU-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_HU,N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
LWU-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XRD, MT_WU,N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
SB-> List(Y, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_XWR, MT_B, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
SH-> List(Y, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_XWR, MT_H, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
SW-> List(Y, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_XWR, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
SD-> List(xpr64, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_XWR, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
LUI-> List(Y, BR_N, REN_N,REN_Y,A2_0, A1_LUI,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLTI -> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_SLT, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLTIU-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_SLTU,M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
ANDI-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_AND, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
ORI-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_OR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
XORI-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_XOR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLLI-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_SL, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRLI-> List(Y_SH, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_SR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRAI-> List(Y_SH, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_SRA, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
ADD-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SUB-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SUB, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLT-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SLT, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLTU-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SLTU,M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
riscvAND-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_AND, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
riscvOR-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_OR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
riscvXOR-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_XOR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLL-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SL, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRL-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRA-> List(Y, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_XPR,FN_SRA, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
ADDIW-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_32,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLLIW-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_32,FN_SL, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRLIW-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_32,FN_SR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRAIW-> List(xpr64, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_32,FN_SRA, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
ADDW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_32,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SUBW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_32,FN_SUB, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SLLW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_32,FN_SL, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRLW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_32,FN_SR, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
SRAW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_RS2, A1_RS1,DW_32,FN_SRA, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_ALU,REN_N,WEN_N,N,N,N,N),
MUL-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, Y,MUL_64, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
MULH-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, Y,MUL_64H, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
MULHU-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, Y,MUL_64HU, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
MULHSU-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, Y,MUL_64HSU, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
MULW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, Y,MUL_32, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
DIV-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_64D, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
DIVU-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_64DU, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
REM-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_64R, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
REMU-> List(Y, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_64RU, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
DIVW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_32D, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
DIVUW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_32DU, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
REMW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_32R, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
REMUW-> List(xpr64, BR_N, REN_Y,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, Y,DIV_32RU, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
SYSCALL-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,Y,N),
EI-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,Y),
DI-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,Y),
ERET-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,Y,N,Y),
FENCE-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,Y,N,N,N),
CFLUSH-> List(Y, BR_N, REN_Y,REN_N,A2_X, A1_X, DW_X, FN_X, M_Y,M_FLA, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,Y),
MFPCR-> List(Y, BR_N, REN_N,REN_N,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_PCR,REN_Y,WEN_N,N,N,N,Y),
MTPCR-> List(Y, BR_N, REN_N,REN_Y,A2_X, A1_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_Y,N,N,N,Y)
// Instructions that have not yet been implemented
/*
// floating point
FLW-> List(FPU_Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_FRD, MT_WU,N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
FLD-> List(FPU_Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_Y,M_FRD, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
FSW-> List(FPU_Y, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_FWR, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
FSD-> List(FPU_Y, BR_N, REN_Y,REN_Y,A2_SPLIT,A1_RS1,DW_XPR,FN_ADD, M_Y,M_FWR, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,N,N,N,N),
// atomic memory operations
AMOADD_W-> List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_ADD, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOSWAP_W->List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_SWAP,MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOAND_W-> List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_AND, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOOR_W-> List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_OR, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMIN_W-> List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MIN, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMAX_W-> List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MAX, MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMINU_W->List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MINU,MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMAXU_W->List(Y, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MAXU,MT_W, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOADD_D-> List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_ADD, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOSWAP_D->List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_SWAP,MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOAND_D-> List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_AND, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOOR_D-> List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_OR, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMIN_D-> List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MIN, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMAX_D-> List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MAX, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMINU_D->List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MINU,MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
AMOMAXU_D->List(xpr64, BR_N, REN_Y,REN_Y,A2_0, A1_RS1,DW_XPR,FN_ADD, M_Y,M_XA_MAXU,MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_RD,WB_X, REN_N,WEN_N,N,N,N,N),
// miscellaneous
RDNPC-> List(Y, BR_N, REN_N,REN_Y,A2_SEXT, A1_RS1,DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_PC, REN_N,WEN_N,N,N,N,N),
*/
));
val id_int_val :: id_br_type :: id_renx2 :: id_renx1 :: id_sel_alu2 :: id_sel_alu1 :: id_fn_dw :: id_fn_alu :: csremainder = cs;
val id_mem_val :: id_mem_cmd :: id_mem_type :: id_mul_val :: id_mul_fn :: id_div_val :: id_div_fn :: id_wen :: id_sel_wa :: id_sel_wb :: id_ren_pcr :: id_wen_pcr :: id_sync :: id_eret :: id_syscall :: id_privileged :: Nil = csremainder;
val id_raddr2 = io.dpath.inst(21,17);
val id_raddr1 = io.dpath.inst(26,22);
val id_waddr = io.dpath.inst(31,27);
val id_ren2 = id_renx2;
val id_ren1 = id_renx1;
interface cleanup, major pipeline changes
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val id_console_out_val = id_wen_pcr & (id_raddr2 === PCR_CONSOLE);
val console_out_fire = id_console_out_val & ~io.dpath.killd;
io.console.valid := console_out_fire.toBool;
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val sboard = new rocketCtrlSboard();
interface cleanup, major pipeline changes
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sboard.io.raddra := id_raddr2.toUFix;
sboard.io.raddrb := id_raddr1.toUFix;
sboard.io.raddrc := id_waddr.toUFix;
sboard.io.set := io.dpath.sboard_set;
sboard.io.seta := io.dpath.sboard_seta;
sboard.io.clr0 := io.dpath.sboard_clr0;
sboard.io.clr0a := io.dpath.sboard_clr0a;
sboard.io.clr1 := io.dpath.sboard_clr1;
sboard.io.clr1a := io.dpath.sboard_clr1a;
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val id_stall_raddr2 = sboard.io.stalla;
val id_stall_raddr1 = sboard.io.stallb;
val id_stall_waddr = sboard.io.stallc;
val id_stall_ra = sboard.io.stallra;
val id_reg_btb_hit = Reg(width = 1, resetVal = Bool(false));
val ex_reg_br_type = Reg(){UFix(width = 4)};
val ex_reg_btb_hit = Reg(){Bool()};
val ex_reg_mem_val = Reg(){Bool()};
val ex_reg_mem_cmd = Reg(){UFix(width = 4)};
val ex_reg_mem_type = Reg(){UFix(width = 3)};
val ex_reg_eret = Reg(resetVal = Bool(false));
val ex_reg_privileged = Reg(resetVal = Bool(false));
interface cleanup, major pipeline changes
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when (!io.dpath.stalld) {
when (io.dpath.killf) {
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id_reg_btb_hit <== Bool(false);
}
otherwise{
id_reg_btb_hit <== io.dpath.btb_hit;
}
}
interface cleanup, major pipeline changes
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when (reset.toBool || io.dpath.killd) {
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ex_reg_br_type <== BR_N;
ex_reg_btb_hit <== Bool(false);
ex_reg_mem_val <== Bool(false);
ex_reg_mem_cmd <== UFix(0, 4);
ex_reg_mem_type <== UFix(0, 3);
ex_reg_eret <== Bool(false);
ex_reg_privileged <== Bool(false);
}
otherwise {
ex_reg_br_type <== id_br_type;
ex_reg_btb_hit <== id_reg_btb_hit;
interface cleanup, major pipeline changes
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ex_reg_mem_val <== id_mem_val.toBool;
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ex_reg_mem_cmd <== id_mem_cmd;
ex_reg_mem_type <== id_mem_type;
ex_reg_eret <== id_eret.toBool;
ex_reg_privileged <== id_privileged.toBool;
}
val beq = io.dpath.br_eq;
val bne = ~io.dpath.br_eq;
val blt = io.dpath.br_lt;
val bltu = io.dpath.br_ltu;
val bge = ~io.dpath.br_lt;
val bgeu = ~io.dpath.br_ltu;
val br_taken =
(ex_reg_br_type === BR_EQ) & beq |
(ex_reg_br_type === BR_NE) & bne |
(ex_reg_br_type === BR_LT) & blt |
(ex_reg_br_type === BR_LTU) & bltu |
(ex_reg_br_type === BR_GE) & bge |
(ex_reg_br_type === BR_GEU) & bgeu;
val jr_taken = (ex_reg_br_type === BR_JR);
val j_taken = (ex_reg_br_type === BR_J);
io.imem.req_val := io.host.start;
// io.imem.req_val := Bool(true);
interface cleanup, major pipeline changes
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io.dmem.req_val := ex_reg_mem_val && ~io.dpath.killx;
io.dmem.req_cmd := ex_reg_mem_cmd;
io.dmem.req_type := ex_reg_mem_type;
val mem_reg_mem_val = Reg(){Bool()};
val mem_reg_mem_cmd = Reg(){UFix(width = 4)};
val mem_reg_mem_type = Reg(){UFix(width = 3)};
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interface cleanup, major pipeline changes
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when (reset.toBool || io.dpath.killx) {
mem_reg_mem_val <== Bool(false);
mem_reg_mem_cmd <== UFix(0, 4);
mem_reg_mem_type <== UFix(0, 3);
}
otherwise {
mem_reg_mem_val <== ex_reg_mem_val;
mem_reg_mem_cmd <== ex_reg_mem_cmd;
mem_reg_mem_type <== ex_reg_mem_type;
}
// replay on a D$ load miss : FIXME - add a miss signal to D$
pipeline changes for replay on dcache miss
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val mem_cmd_load = mem_reg_mem_val && (mem_reg_mem_cmd === M_XRD);
interface cleanup, major pipeline changes
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val replay_mem = mem_reg_mem_val && (mem_reg_mem_cmd === M_XRD) && !io.dmem.resp_val;
val dcache_miss = Reg(replay_mem);
pipeline changes for replay on dcache miss
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io.dpath.mem_load := mem_cmd_load;
interface cleanup, major pipeline changes
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io.dpath.dcache_miss := dcache_miss;
io.dpath.sel_pc :=
Mux(replay_mem, PC_MEM,
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Mux(io.dpath.exception || ex_reg_eret, PC_PCR,
Mux(!ex_reg_btb_hit && br_taken, PC_BR,
Mux(ex_reg_btb_hit && !br_taken || ex_reg_privileged, PC_EX4,
Mux(jr_taken, PC_JR,
Mux(j_taken, PC_J,
Mux(io.dpath.btb_hit, PC_BTB,
interface cleanup, major pipeline changes
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PC_4)))))));
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interface cleanup, major pipeline changes
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io.dpath.wen_btb := ~ex_reg_btb_hit & br_taken;
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val take_pc =
~ex_reg_btb_hit & br_taken |
ex_reg_btb_hit & ~br_taken |
jr_taken |
j_taken |
io.dpath.exception |
ex_reg_privileged |
interface cleanup, major pipeline changes
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ex_reg_eret |
replay_mem;
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interface cleanup, major pipeline changes
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io.dpath.stallf :=
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~take_pc &
(
~io.imem.req_rdy |
~io.imem.resp_val |
interface cleanup, major pipeline changes
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io.dpath.stalld
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);
interface cleanup, major pipeline changes
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// check for loads in execute stage to detect load/use hazards
dcache loads working - 1/2 cycle load/use delay depending on load type
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val ex_mem_cmd_load = ex_reg_mem_val && (ex_reg_mem_cmd === M_XRD);
val lu_stall_raddr1_ex =
ex_mem_cmd_load &&
interface cleanup, major pipeline changes
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id_ren1.toBool &&
(id_raddr1 === io.dpath.ex_waddr);
dcache loads working - 1/2 cycle load/use delay depending on load type
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val lu_stall_raddr2_ex =
ex_mem_cmd_load &&
interface cleanup, major pipeline changes
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id_ren2.toBool &&
(id_raddr2 === io.dpath.ex_waddr);
dcache loads working - 1/2 cycle load/use delay depending on load type
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val mem_mem_cmd_load_bh =
mem_reg_mem_val &&
(mem_reg_mem_cmd === M_XRD) &&
((mem_reg_mem_type === MT_B) ||
(mem_reg_mem_type === MT_BU) ||
(mem_reg_mem_type === MT_H) ||
(mem_reg_mem_type === MT_HU));
val lu_stall_raddr1_mem =
mem_mem_cmd_load_bh &&
id_ren1.toBool &&
(id_raddr1 === io.dpath.mem_waddr);
val lu_stall_raddr2_mem =
mem_mem_cmd_load_bh &&
id_ren2.toBool &&
(id_raddr2 === io.dpath.mem_waddr);
interface cleanup, major pipeline changes
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val ctrl_stalld =
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~take_pc &
(
dcache loads working - 1/2 cycle load/use delay depending on load type
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lu_stall_raddr1_ex |
lu_stall_raddr2_ex |
lu_stall_raddr1_mem |
lu_stall_raddr2_mem |
interface cleanup, major pipeline changes
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id_ren2 & id_stall_raddr2 |
id_ren1 & id_stall_raddr1 |
(id_sel_wa === WA_RD) && id_stall_waddr |
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(id_sel_wa === WA_RA) & id_stall_ra |
interface cleanup, major pipeline changes
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id_mem_val & ~io.dmem.req_rdy |
id_sync & ~io.dmem.req_rdy |
// id_mem_val_masked & id_full_mrq |
// id_sync & (~id_empty_mrq | io.mem.dc_busy) |
// mem_xstore_val & ~io.mem.xsdq_rdy |
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id_console_out_val & ~io.console.rdy |
id_div_val & ~io.dpath.div_rdy |
io.dpath.div_result_val |
io.dpath.mul_result_val
);
interface cleanup, major pipeline changes
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val ctrl_killd = take_pc | ctrl_stalld;
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// for divider, multiplier writeback
val mul_wb = io.dpath.mul_result_val;
val div_wb = io.dpath.div_result_val & !mul_wb;
interface cleanup, major pipeline changes
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io.dpath.stalld := ctrl_stalld.toBool;
io.dpath.killf := take_pc | ~io.imem.resp_val;
io.dpath.killd := ctrl_killd.toBool;
io.dpath.killx := replay_mem.toBool;
io.dpath.killm := replay_mem.toBool;
io.dpath.ren2 := id_ren2.toBool;
io.dpath.ren1 := id_ren1.toBool;
io.dpath.sel_alu2 := id_sel_alu2;
io.dpath.sel_alu1 := id_sel_alu1.toBool;
io.dpath.fn_dw := id_fn_dw.toBool;
io.dpath.fn_alu := id_fn_alu;
io.dpath.div_fn := id_div_fn;
io.dpath.div_val := id_div_val.toBool;
io.dpath.div_wb := div_wb;
io.dpath.mul_fn := id_mul_fn;
io.dpath.mul_val := id_mul_val.toBool;
io.dpath.mul_wb := mul_wb;
io.dpath.wen := id_wen.toBool;
io.dpath.sel_wa := id_sel_wa.toBool;
io.dpath.sel_wb := id_sel_wb;
io.dpath.ren_pcr := id_ren_pcr.toBool;
io.dpath.wen_pcr := id_wen_pcr.toBool;
io.dpath.eret := id_eret.toBool;
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interface cleanup, major pipeline changes
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io.dpath.xcpt_illegal := ~id_int_val.toBool;
io.dpath.xcpt_privileged := (id_privileged & ~io.dpath.status(5)).toBool;
io.dpath.xcpt_fpu := Bool(false);
io.dpath.xcpt_syscall := id_syscall.toBool;
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}
}
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