riscv/rocket-chip
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move store data generation into EX stage

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doing so removes it from the critical path of FP store unrecoding.
This commit is contained in:
Andrew Waterman
2012-02-12 01:35:55 -08:00
parent 725190d0ee
commit 50a283d311
4 changed files with 68 additions and 47 deletions
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34
rocket/src/main/scala/ctrl.scala
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@ -41,6 +41,7 @@ class ioCtrlDpath extends Bundle()
val mem_wen = Bool(OUTPUT);
val wb_wen = Bool(OUTPUT);
val flush_inst = Bool(OUTPUT);
val ex_mem_type = UFix(3,OUTPUT)
// enable/disable interrupts
val irq_enable = Bool(OUTPUT);
val irq_disable = Bool(OUTPUT);
@ -202,7 +203,7 @@ class rocketCtrl extends Component
ERET-> List(Y, N,BR_N, REN_N,REN_N,A2_X, DW_X, FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_PCR,REN_N,WEN_N,I_X ,SYNC_N,Y,N,Y,N),
FENCE-> List(Y, N,BR_N, REN_N,REN_N,A2_X, DW_X, FN_X, M_Y,M_FENCE, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_X, REN_N,WEN_N,I_X ,SYNC_D,N,N,N,N),
FENCE_I-> List(Y, N,BR_N, REN_N,REN_N,A2_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,I_X ,SYNC_I,N,N,N,N),
CFLUSH-> List(Y, N,BR_N, REN_Y,REN_N,A2_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,I_X ,SYNC_N,N,N,Y,Y),
CFLUSH-> List(Y, N,BR_N, REN_N,REN_N,A2_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,I_X ,SYNC_N,N,N,Y,Y),
MFPCR-> List(Y, N,BR_N, REN_N,REN_N,A2_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,I_X ,SYNC_N,N,N,Y,N),
MTPCR-> List(Y, N,BR_N, REN_N,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_Y,I_X ,SYNC_N,N,N,Y,Y),
RDTIME-> List(Y, N,BR_N, REN_N,REN_N,A2_X, DW_XPR,FN_X, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_Y,WA_RD,WB_TSC,REN_N,WEN_N,I_X ,SYNC_N,N,N,N,N),
@ -244,21 +245,21 @@ class rocketCtrl extends Component
VFLW-> List(VEC_Y,Y,BR_N, REN_N,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSD-> List(VEC_Y,Y,BR_N, REN_N,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSW-> List(VEC_Y,Y,BR_N, REN_N,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTWU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTH-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTHU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTB-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTBU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTH-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTB-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFLSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFLSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_X, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N)
VLSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTWU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTH-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTHU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTB-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VLSTBU-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTH-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VSSTB-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFLSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFLSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSSTD-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N),
VFSSTW-> List(VEC_Y,Y,BR_N, REN_Y,REN_Y,A2_ZERO, DW_XPR,FN_ADD, M_N,M_X, MT_D, N,MUL_X, N,DIV_X, WEN_N,WA_X, WB_ALU,REN_N,WEN_N,I_X, SYNC_N,N,N,N,N)
))
val id_int_val :: id_vec_val :: id_br_type :: id_renx2 :: id_renx1 :: id_sel_alu2 :: id_fn_dw :: id_fn_alu :: cs0 = cs
@ -708,6 +709,7 @@ class rocketCtrl extends Component
io.dpath.wb_eret := wb_reg_eret;
io.dpath.irq_disable := wb_reg_inst_di;
io.dpath.irq_enable := wb_reg_inst_ei;
io.dpath.ex_mem_type := ex_reg_mem_type
io.dtlb_val := ex_reg_mem_val;
io.dtlb_kill := mem_reg_kill;