From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Wed, 8 May 2019 00:41:31 +0000 (+0100)
Subject: begin connecting units together
X-Git-Tag: div_pipeline~2123
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fd4f0e6a443e64c0e54abc1d7ffc2c11465700a9;p=soc.git

begin connecting units together
---

diff --git a/src/experiment/cscore.py b/src/experiment/cscore.py
new file mode 100644
index 00000000..ecafe5d8
--- /dev/null
+++ b/src/experiment/cscore.py
@@ -0,0 +1,99 @@
+from nmigen.compat.sim import run_simulation
+from nmigen.cli import verilog, rtlil
+from nmigen import Module, Signal, Array, Elaboratable
+
+from regfile.regfile import RegFileArray
+from scoreboard.fn_unit import IntFnUnit, FPFnUnit, LDFnUnit, STFnUnit
+from scoreboard.fu_fu_matrix import FUFUDepMatrix
+
+from alu_hier import Adder, Subtractor
+
+class Scoreboard(Elaboratable):
+    def __init__(self, reg_width, reg_depth):
+        self.reg_width = reg_width
+        self.reg_depth = reg_depth
+
+        # Register Files
+        self.intregs = RegFileArray(reg_width, reg_depth)
+        self.int_dest = self.intregs.write_port()
+        self.int_src1 = self.intregs.read_port()
+        self.int_src2 = self.intregs.read_port()
+
+        self.fpregs = RegFileArray(reg_width, reg_depth)
+        self.fp_dest = self.fpregs.write_port()
+        self.fp_src1 = self.fpregs.read_port()
+        self.fp_src2 = self.fpregs.read_port()
+
+    def elaborate(self, platform):
+        m = Module()
+        m.submodules.intregs = self.intregs
+        m.submodules.fpregs = self.fpregs
+
+        # Int ALUs
+        m.submodules.adder = adder = Adder(self.reg_width)
+        m.submodules.subtractor = subtractor = Subtractor(self.reg_width)
+        int_alus = [adder, subtractor]
+
+        # Int FUs
+        il = []
+        for i, a in enumerate(int_alus):
+            fu = IntFnUnit(self.reg_width, shadow_wid=0)
+            setattr(m.submodules, "intfu%d" % i, fu)
+            il.append(fu)
+        int_fus = Array(il)
+
+        n_fus = len(il)
+
+        # FU Dep Matrix
+        m.submodules.fudeps = fudeps = FUFUDepMatrix(n_fus, n_fus)
+
+
+        return m
+
+    def __iter__(self):
+        yield from self.intregs
+        yield from self.fpregs
+        #yield from self.int_src1
+        #yield from self.int_dest
+        #yield from self.int_src1
+        #yield from self.int_src2
+        #yield from self.fp_dest
+        #yield from self.fp_src1
+        #yield from self.fp_src2
+                
+    def ports(self):
+        return list(self)
+
+
+def scoreboard_sim(dut):
+    yield dut.dest_i.eq(1)
+    yield dut.issue_i.eq(1)
+    yield
+    yield dut.issue_i.eq(0)
+    yield
+    yield dut.src1_i.eq(1)
+    yield dut.issue_i.eq(1)
+    yield
+    yield
+    yield
+    yield dut.issue_i.eq(0)
+    yield
+    yield dut.go_read_i.eq(1)
+    yield
+    yield dut.go_read_i.eq(0)
+    yield
+    yield dut.go_write_i.eq(1)
+    yield
+    yield dut.go_write_i.eq(0)
+    yield
+
+def test_scoreboard():
+    dut = Scoreboard(32, 8)
+    vl = rtlil.convert(dut, ports=dut.ports())
+    with open("test_scoreboard.il", "w") as f:
+        f.write(vl)
+
+    run_simulation(dut, scoreboard_sim(dut), vcd_name='test_scoreboard.vcd')
+
+if __name__ == '__main__':
+    test_scoreboard()
diff --git a/src/scoreboard/fn_unit.py b/src/scoreboard/fn_unit.py
index b2ef9468..8474e2dc 100644
--- a/src/scoreboard/fn_unit.py
+++ b/src/scoreboard/fn_unit.py
@@ -4,7 +4,7 @@ from nmigen import Module, Signal, Cat, Array, Const, Elaboratable
 from nmutil.latch import SRLatch
 from nmigen.lib.coding import Decoder
 
-from shadow_fn import ShadowFn
+from .shadow_fn import ShadowFn
 
 
 class FnUnit(Elaboratable):
diff --git a/src/scoreboard/fu_fu_matrix.py b/src/scoreboard/fu_fu_matrix.py
index 6ffd4442..b558927c 100644
--- a/src/scoreboard/fu_fu_matrix.py
+++ b/src/scoreboard/fu_fu_matrix.py
@@ -3,8 +3,8 @@ from nmigen.cli import verilog, rtlil
 from nmigen import Module, Signal, Elaboratable, Array, Cat
 
 #from nmutil.latch import SRLatch
-from fu_dep_cell import FUDependenceCell
-from fu_picker_vec import FU_Pick_Vec
+from .fu_dep_cell import FUDependenceCell
+from .fu_picker_vec import FU_Pick_Vec
 
 """