from nmigen import Module, Const, Signal, Array, Cat, Elaboratable, Memory
from nmigen.back.pysim import Delay
-from soc.regfile.regfile import RegFileArray, treereduce
+from soc.regfile.regfile import RegFileArray, ortreereduce
from soc.scoremulti.fu_fu_matrix import FUFUDepMatrix
from soc.scoremulti.fu_reg_matrix import FURegDepMatrix
from soc.scoreboard.global_pending import GlobalPending
from soc.experiment.compalu import ComputationUnitNoDelay
from soc.experiment.compalu_multi import MultiCompUnit, go_record
-from soc.experiment.compldst import LDSTCompUnit
-from soc.experiment.testmem import TestMemory
+from soc.experiment.compldst_multi import LDSTCompUnit
+from soc.experiment.compldst_multi import CompLDSTOpSubset
+from soc.experiment.l0_cache import TstL0CacheBuffer
-from soc.experiment.alu_hier import ALU, BranchALU, CompALUOpSubset
+from soc.experiment.alu_hier import ALU, BranchALU
+from soc.fu.alu.alu_input_record import CompALUOpSubset
from soc.decoder.power_enums import InternalOp, Function
from soc.decoder.power_decoder import (create_pdecode)
from soc.decoder.power_decoder2 import (PowerDecode2)
+from soc.decoder.power_decoder2 import Decode2ToExecute1Type
+
from soc.simulator.program import Program
self.rd1 = go_record(n_units, "rd1")
self.go_rd_i = [self.rd0.go, self.rd1.go] # XXX HACK!
self.wr0 = go_record(n_units, "wr0")
- self.go_wr_i = self.wr0.go
+ self.go_wr_i = [self.wr0.go]
self.shadown_i = Signal(n_units, reset_less=True)
self.go_die_i = Signal(n_units, reset_less=True)
if ldstmode:
shadow_l.append(alu.shadown_i)
godie_l.append(alu.go_die_i)
print (alu, "rel", alu.req_rel_o, alu.rd_rel_o)
- if isinstance(alu, ComputationUnitNoDelay):
- if isinstance(alu, CompUnitsBase):
- ulen = alu.n_units
- else:
- ulen = 1
- rd_rel0_l.append(Const(0, 64)) # FIXME
- rd_rel1_l.append(Const(0, 64)) # FIXME
- dummy1 = Signal(ulen, reset_less=True)
- dummy2 = Signal(ulen, reset_less=True)
- dummy3 = Signal(ulen, reset_less=True)
- dummy4 = Signal(ulen, reset_less=True)
- dummy5 = Signal(ulen, reset_less=True)
- go_wr_l.append(dummy1)
- go_rd_l0.append(dummy2)
- go_rd_l1.append(dummy3)
- issue_l.append(dummy4)
- busy_l.append(dummy5)
- else:
- rd_rel0_l.append(alu.rd_rel_o[0])
- rd_rel1_l.append(alu.rd_rel_o[1])
- go_wr_l.append(alu.go_wr_i[0])
- go_rd_l0.append(alu.go_rd_i[0])
- go_rd_l1.append(alu.go_rd_i[1])
- issue_l.append(alu.issue_i)
- busy_l.append(alu.busy_o)
+ rd_rel0_l.append(alu.rd_rel_o[0])
+ rd_rel1_l.append(alu.rd_rel_o[1])
+ go_wr_l.append(alu.go_wr_i)
+ go_rd_l0.append(alu.go_rd_i[0])
+ go_rd_l1.append(alu.go_rd_i[1])
+ issue_l.append(alu.issue_i)
+ busy_l.append(alu.busy_o)
comb += self.rd0.rel.eq(Cat(*rd_rel0_l))
comb += self.rd1.rel.eq(Cat(*rd_rel1_l))
comb += self.req_rel_o.eq(Cat(*req_rel_l))
comb += self.busy_o.eq(Cat(*busy_l))
comb += Cat(*godie_l).eq(self.go_die_i)
comb += Cat(*shadow_l).eq(self.shadown_i)
- comb += Cat(*go_wr_l).eq(self.go_wr_i)
+ comb += Cat(*go_wr_l).eq(self.wr0.go) # XXX TODO
comb += Cat(*go_rd_l0).eq(self.rd0.go)
comb += Cat(*go_rd_l1).eq(self.rd1.go)
comb += Cat(*issue_l).eq(self.issue_i)
# protected by a single go_wr. multi-issue requires a bus
# to be inserted here.
if self.units:
- data_o = treereduce(self.units, "data_o")
+ data_o = ortreereduce(self.units, "data_o")
comb += self.data_o.eq(data_o)
if self.ldstmode:
- addr_o = treereduce(self.units, "addr_o")
+ addr_o = ortreereduce(self.units, "addr_o")
comb += self.addr_o.eq(addr_o)
for i, alu in enumerate(self.units):
class CompUnitLDSTs(CompUnitsBase):
- def __init__(self, rwid, opwid, n_ldsts, mem):
+ def __init__(self, rwid, opwid, n_ldsts, l0):
""" Inputs:
* :rwid: bit width of register file(s) - both FP and INT
self.opwid = opwid
# inputs
- self.oper_i = Signal(opwid, reset_less=True)
- self.imm_i = Signal(rwid, reset_less=True)
-
- # Int ALUs
- self.alus = []
- for i in range(n_ldsts):
- self.alus.append(ALU(rwid))
+ self.op = CompLDSTOpSubset("cul_i")
+ # LD/ST Units
units = []
- for alu in self.alus:
- units.append(LDSTCompUnit(rwid, alu, mem))
+ for i in range(n_ldsts):
+ pi = l0.l0.dports[i].pi
+ units.append(LDSTCompUnit(pi, rwid, awid=48))
CompUnitsBase.__init__(self, rwid, units, ldstmode=True)
m = CompUnitsBase.elaborate(self, platform)
comb = m.d.comb
- # hand the same operation to all units, 4 lower bits though
- for alu in self.units:
- comb += alu.oper_i[0:4].eq(self.oper_i)
- #comb += alu.imm_i.eq(self.imm_i)
- comb += alu.isalu_i.eq(0)
+ # hand the same operation to all units
+ for ldst in self.units:
+ comb += ldst.oper_i.eq(self.op)
return m
# inputs
self.op = CompALUOpSubset("cua_i")
- self.oper_i = Signal(opwid, reset_less=True)
- self.imm_i = Signal(rwid, reset_less=True)
# Int ALUs
alus = []
units = []
for alu in alus:
aluopwid = 3 # extra bit for immediate mode
- units.append(MultiCompUnit(rwid, alu))
+ units.append(MultiCompUnit(rwid, alu, CompALUOpSubset))
CompUnitsBase.__init__(self, rwid, units)
# hand the subset of operation to ALUs
for alu in self.units:
comb += alu.oper_i.eq(self.op)
- #comb += alu.oper_i[0:3].eq(self.oper_i)
- #comb += alu.imm_i.eq(self.imm_i)
return m
# Branch ALU and CU
self.bgt = BranchALU(rwid)
aluopwid = 3 # extra bit for immediate mode
- self.br1 = MultiCompUnit(rwid, self.bgt)
+ self.br1 = MultiCompUnit(rwid, self.bgt, CompALUOpSubset)
CompUnitsBase.__init__(self, rwid, [self.br1])
def elaborate(self, platform):
self.fpregs = RegFileArray(rwid, n_regs)
# Memory (test for now)
- self.mem = TestMemory(self.rwid, 8) # not too big, takes too long
+ self.l0 = TstL0CacheBuffer()
# issue q needs to get at these
self.aluissue = IssueUnitGroup(2)
self.lsissue = IssueUnitGroup(2)
self.brissue = IssueUnitGroup(1)
# and these
- self.alu_op = CompALUOpSubset("alu")
+ self.instr = Decode2ToExecute1Type("sc_instr")
self.br_oper_i = Signal(4, reset_less=True)
self.br_imm_i = Signal(rwid, reset_less=True)
self.ls_oper_i = Signal(4, reset_less=True)
- self.ls_imm_i = Signal(rwid, reset_less=True)
# inputs
self.int_dest_i = Signal(range(n_regs), reset_less=True) # Dest R# in
m.submodules.intregs = self.intregs
m.submodules.fpregs = self.fpregs
- m.submodules.mem = mem = self.mem
+ m.submodules.l0 = l0 = self.l0
# register ports
int_dest = self.intregs.write_port("dest")
# LDST Comp Units
n_ldsts = 2
- cul = CompUnitLDSTs(self.rwid, 4, self.lsissue.n_insns, self.mem)
+ cul = CompUnitLDSTs(self.rwid, 4, self.lsissue.n_insns, l0)
# Comp Units
m.submodules.cu = cu = CompUnitsBase(self.rwid, [cua, cul, cub])
]
# take these to outside (issue needs them)
- comb += cua.op.eq(self.alu_op)
+ comb += cua.op.eq_from_execute1(self.instr)
comb += cub.oper_i.eq(self.br_oper_i)
comb += cub.imm_i.eq(self.br_imm_i)
- comb += cul.oper_i.eq(self.ls_oper_i)
- comb += cul.imm_i.eq(self.ls_imm_i)
+ comb += cul.op.eq_from_execute1(self.instr)
# TODO: issueunit.f (FP)
# Memory Function Unit
# ---------
reset_b = Signal(cul.n_units, reset_less=True)
- sync += reset_b.eq(cul.go_st_i | cul.go_wr_i | cul.go_die_i)
+ # XXX was cul.go_wr_i not done.o
+ # sync += reset_b.eq(cul.go_st_i | cul.done_o | cul.go_die_i)
+ sync += reset_b.eq(cul.go_st_i | cul.done_o | cul.go_die_i)
comb += memfus.fn_issue_i.eq(cul.issue_i) # Comp Unit Issue -> Mem FUs
comb += memfus.addr_en_i.eq(cul.adr_rel_o) # Match enable on adr rel
# TODO: adr_rel_o needs to go into L1 Cache. for now,
# just immediately activate go_adr
- comb += cul.go_ad_i.eq(cul.adr_rel_o)
+ sync += cul.go_ad_i.eq(cul.adr_rel_o)
# connect up address data
comb += memfus.addrs_i[0].eq(cul.units[0].addr_o)
comb += sc.int_src1_i.eq(src1)
comb += sc.int_src2_i.eq(src2)
comb += sc.reg_enable_i.eq(1) # enable the regfile
+ comb += sc.instr.eq(instr)
# choose a Function-Unit-Group
with m.If(fu == Function.ALU): # alu
- comb += sc.alu_op.eq_from_execute1(instr)
- comb += sc.aluissue.insn_i.eq(1)
+ comb += sc.aluissue.insn_i.eq(1) # enable alu issue
comb += wait_issue_alu.eq(1)
+ with m.Elif(fu == Function.LDST): # ld/st
+ comb += sc.lsissue.insn_i.eq(1) # enable ldst issue
+ comb += wait_issue_ls.eq(1)
+
with m.Elif((op & (0x3 << 2)) != 0): # branch
comb += sc.br_oper_i.eq(Cat(op[0:2], opi))
comb += sc.br_imm_i.eq(imm)
comb += sc.brissue.insn_i.eq(1)
comb += wait_issue_br.eq(1)
- with m.Elif((op & (0x3 << 4)) != 0): # ld/st
- # see compldst.py
- # bit 0: ADD/SUB
- # bit 1: immed
- # bit 4: LD
- # bit 5: ST
- comb += sc.ls_oper_i.eq(Cat(op[0], opi[0], op[4:6]))
- comb += sc.ls_imm_i.eq(imm)
- comb += sc.lsissue.insn_i.eq(1)
- comb += wait_issue_ls.eq(1)
-
# XXX TODO
# these indicate that the instruction is to be made
# shadow-dependent on
alusim.setval(i, val)
# create some instructions
- lst = [#"addi 2, 0, 0x4321",
- #"addi 3, 0, 0x1234",
- "add 1, 3, 2",
- "add 4, 3, 5"
- ]
+ lst = []
+ if False:
+ lst += ["addi 2, 0, 0x4321",
+ "addi 3, 0, 0x1234",
+ "add 1, 3, 2",
+ "add 4, 3, 5"
+ ]
+ if True:
+ lst += [ "lbzu 6, 7(2)",
+
+ ]
+
with Program(lst) as program:
gen = program.generate_instructions()
projects / soc.git / blobdiff