stats: update stats for mmap() change.

[gem5.git] / src / arch / arm / ArmTLB.py

diff --git a/src/arch/arm/ArmTLB.py b/src/arch/arm/ArmTLB.py
index f0d23445f4b024b030dbba10f649ed1daf46a131..4e6c69f72a73561ef7351090bdd6810f530b0ebb 100644 (file)
--- a/src/arch/arm/ArmTLB.py
+++ b/src/arch/arm/ArmTLB.py
@@ -1,6 +1,6 @@
 # -*- mode:python -*-
 
-# Copyright (c) 2009 ARM Limited
+# Copyright (c) 2009, 2013, 2015 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -37,26 +37,62 @@
 #
 # Authors: Ali Saidi
 
-from m5.defines import buildEnv
 from m5.SimObject import SimObject
 from m5.params import *
 from m5.proxy import *
+from MemObject import MemObject
 
-if buildEnv['FULL_SYSTEM']:
-    from MemObject import MemObject
+# Basic stage 1 translation objects
+class ArmTableWalker(MemObject):
+    type = 'ArmTableWalker'
+    cxx_class = 'ArmISA::TableWalker'
+    cxx_header = "arch/arm/table_walker.hh"
+    is_stage2 =  Param.Bool(False, "Is this object for stage 2 translation?")
+    num_squash_per_cycle = Param.Unsigned(2,
+            "Number of outstanding walks that can be squashed per cycle")
 
-    class ArmTableWalker(MemObject):
-        type = 'ArmTableWalker'
-        cxx_class = 'ArmISA::TableWalker'
-        port = Port("Port for TableWalker to do walk the translation with")
-        sys = Param.System(Parent.any, "system object parameter")
-        min_backoff = Param.Tick(0, "Minimum backoff delay after failed send")
-        max_backoff = Param.Tick(100000, "Minimum backoff delay after failed send")
+    # The port to the memory system. This port is ultimately belonging
+    # to the Stage2MMU, and shared by the two table walkers, but we
+    # access it through the ITB and DTB walked objects in the CPU for
+    # symmetry with the other ISAs.
+    port = MasterPort("Port used by the two table walkers")
 
+    sys = Param.System(Parent.any, "system object parameter")
 
 class ArmTLB(SimObject):
     type = 'ArmTLB'
     cxx_class = 'ArmISA::TLB'
+    cxx_header = "arch/arm/tlb.hh"
     size = Param.Int(64, "TLB size")
-    if buildEnv['FULL_SYSTEM']:
-       walker = Param.ArmTableWalker(ArmTableWalker(), "HW Table walker")
+    walker = Param.ArmTableWalker(ArmTableWalker(), "HW Table walker")
+    is_stage2 = Param.Bool(False, "Is this a stage 2 TLB?")
+
+# Stage 2 translation objects, only used when virtualisation is being used
+class ArmStage2TableWalker(ArmTableWalker):
+    is_stage2 = True
+
+class ArmStage2TLB(ArmTLB):
+    size = 32
+    walker = ArmStage2TableWalker()
+    is_stage2 = True
+
+class ArmStage2MMU(SimObject):
+    type = 'ArmStage2MMU'
+    cxx_class = 'ArmISA::Stage2MMU'
+    cxx_header = 'arch/arm/stage2_mmu.hh'
+    tlb = Param.ArmTLB("Stage 1 TLB")
+    stage2_tlb = Param.ArmTLB("Stage 2 TLB")
+
+    sys = Param.System(Parent.any, "system object parameter")
+
+class ArmStage2IMMU(ArmStage2MMU):
+    # We rely on the itb being a parameter of the CPU, and get the
+    # appropriate object that way
+    tlb = Parent.itb
+    stage2_tlb = ArmStage2TLB()
+
+class ArmStage2DMMU(ArmStage2MMU):
+    # We rely on the dtb being a parameter of the CPU, and get the
+    # appropriate object that way
+    tlb = Parent.dtb
+    stage2_tlb = ArmStage2TLB()