mem-cache,configs: remove extra prefetch_* params

Remove the prefetch_on_access and prefetch_on_pf_hit from BaseCache.
BasePrefetch no longer expects this params to exist in the parent.

Configurations that set these parameter using the cache object were
fixed.

Change-Id: I9ab6a545eaf930ee41ebda74e2b6b8bad0ca35a7
Signed-off-by: Tiago Mück <tiago.muck@arm.com>

configs/common/cores/arm/O3_ARM_v7a.py

@@ -207,9 +207,8 @@ class O3_ARM_v7aL2(Cache):
     size = "1MB"
     assoc = 16
     write_buffers = 8
-    prefetch_on_access = True
     clusivity = "mostly_excl"
     # Simple stride prefetcher
-    prefetcher = StridePrefetcher(degree=8, latency=1)
+    prefetcher = StridePrefetcher(degree=8, latency=1, prefetch_on_access=True)
     tags = BaseSetAssoc()
     replacement_policy = RandomRP()

configs/common/cores/arm/ex5_LITTLE.py

@@ -147,9 +147,8 @@ class L2(Cache):
     size = "512kB"
     assoc = 8
     write_buffers = 16
-    prefetch_on_access = True
     clusivity = "mostly_excl"
     # Simple stride prefetcher
-    prefetcher = StridePrefetcher(degree=1, latency=1)
+    prefetcher = StridePrefetcher(degree=1, latency=1, prefetch_on_access=True)
     tags = BaseSetAssoc()
     replacement_policy = RandomRP()

configs/common/cores/arm/ex5_big.py

@@ -200,9 +200,8 @@ class L2(Cache):
     size = "2MB"
     assoc = 16
     write_buffers = 8
-    prefetch_on_access = True
     clusivity = "mostly_excl"
     # Simple stride prefetcher
-    prefetcher = StridePrefetcher(degree=8, latency=1)
+    prefetcher = StridePrefetcher(degree=8, latency=1, prefetch_on_access=True)
     tags = BaseSetAssoc()
     replacement_policy = RandomRP()

src/mem/cache/Cache.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2012-2013, 2015, 2018 ARM Limited
+# Copyright (c) 2012-2013, 2015, 2018, 2023 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -107,13 +107,6 @@ class BaseCache(ClockedObject):
     is_read_only = Param.Bool(False, "Is this cache read only (e.g. inst)")
 
     prefetcher = Param.BasePrefetcher(NULL, "Prefetcher attached to cache")
-    prefetch_on_access = Param.Bool(
-        False,
-        "Notify the hardware prefetcher on every access (not just misses)",
-    )
-    prefetch_on_pf_hit = Param.Bool(
-        False, "Notify the hardware prefetcher on hit on prefetched lines"
-    )
 
     tags = Param.BaseTags(BaseSetAssoc(), "Tag store")
     replacement_policy = Param.BaseReplacementPolicy(

src/mem/cache/prefetch/Prefetcher.py

@@ -1,4 +1,4 @@
-# Copyright (c) 2012, 2014, 2019 ARM Limited
+# Copyright (c) 2012, 2014, 2019, 2023 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -76,11 +76,11 @@ class BasePrefetcher(ClockedObject):
     on_data = Param.Bool(True, "Notify prefetcher on data accesses")
     on_inst = Param.Bool(True, "Notify prefetcher on instruction accesses")
     prefetch_on_access = Param.Bool(
-        Parent.prefetch_on_access,
+        False,
         "Notify the hardware prefetcher on every access (not just misses)",
     )
     prefetch_on_pf_hit = Param.Bool(
-        Parent.prefetch_on_pf_hit,
+        False,
         "Notify the hardware prefetcher on hit on prefetched lines",
     )
     use_virtual_addresses = Param.Bool(