configs: Remove unused WalkCache models

Change-Id: Iebda966e72b484ee15cbc7cd62256a950b2a90f1
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/54244
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

configs/common/cores/arm/HPI.py

@@ -1332,16 +1332,6 @@ class HPI_MMU(ArmMMU):
     itb = ArmTLB(entry_type="instruction", size=256)
     dtb = ArmTLB(entry_type="data", size=256)
 
-class HPI_WalkCache(Cache):
-    data_latency = 4
-    tag_latency = 4
-    response_latency = 4
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '1kB'
-    assoc = 8
-    write_buffers = 16
-
 class HPI_BP(TournamentBP):
     localPredictorSize = 64
     localCtrBits = 2
@@ -1442,7 +1432,7 @@ class HPI(MinorCPU):
 
 __all__ = [
     "HPI_BP",
-    "HPI_ITB", "HPI_DTB", "HPI_WalkCache",
+    "HPI_ITB", "HPI_DTB",
     "HPI_ICache", "HPI_DCache", "HPI_L2",
     "HPI",
 ]

configs/common/cores/arm/O3_ARM_v7a.py

@@ -169,21 +169,6 @@ class O3_ARM_v7a_DCache(Cache):
     # Consider the L2 a victim cache also for clean lines
     writeback_clean = True
 
-# TLB Cache
-# Use a cache as a L2 TLB
-class O3_ARM_v7aWalkCache(Cache):
-    tag_latency = 4
-    data_latency = 4
-    response_latency = 4
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '1kB'
-    assoc = 8
-    write_buffers = 16
-    is_read_only = True
-    # Writeback clean lines as well
-    writeback_clean = True
-
 # L2 Cache
 class O3_ARM_v7aL2(Cache):
     tag_latency = 12

configs/common/cores/arm/ex5_LITTLE.py

@@ -112,21 +112,6 @@ class L1D(L1Cache):
     assoc = 4
     write_buffers = 4
 
-# TLB Cache
-# Use a cache as a L2 TLB
-class WalkCache(Cache):
-    tag_latency = 2
-    data_latency = 2
-    response_latency = 2
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '1kB'
-    assoc = 2
-    write_buffers = 16
-    is_read_only = True
-    # Writeback clean lines as well
-    writeback_clean = True
-
 # L2 Cache
 class L2(Cache):
     tag_latency = 9

configs/common/cores/arm/ex5_big.py

@@ -164,21 +164,6 @@ class L1D(L1Cache):
     assoc = 2
     write_buffers = 16
 
-# TLB Cache
-# Use a cache as a L2 TLB
-class WalkCache(Cache):
-    tag_latency = 4
-    data_latency = 4
-    response_latency = 4
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '1kB'
-    assoc = 8
-    write_buffers = 16
-    is_read_only = True
-    # Writeback clean lines as well
-    writeback_clean = True
-
 # L2 Cache
 class L2(Cache):
     tag_latency = 15

configs/example/arm/devices.py

@@ -65,17 +65,6 @@ class L1D(L1_DCache):
     write_buffers = 16
 
 
-class WalkCache(PageTableWalkerCache):
-    tag_latency = 4
-    data_latency = 4
-    response_latency = 4
-    mshrs = 6
-    tgts_per_mshr = 8
-    size = '1kB'
-    assoc = 8
-    write_buffers = 16
-
-
 class L2(L2Cache):
     tag_latency = 12
     data_latency = 12