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-rw-r--r--src/mem/cache/prefetch/base.cc35
-rw-r--r--src/mem/cache/prefetch/base.hh14
2 files changed, 47 insertions, 2 deletions
diff --git a/src/mem/cache/prefetch/base.cc b/src/mem/cache/prefetch/base.cc
index de4eaca01..0b296144c 100644
--- a/src/mem/cache/prefetch/base.cc
+++ b/src/mem/cache/prefetch/base.cc
@@ -48,13 +48,14 @@
#include <list>
+#include "base/intmath.hh"
#include "mem/cache/prefetch/base.hh"
#include "mem/cache/base.hh"
#include "sim/system.hh"
BasePrefetcher::BasePrefetcher(const BasePrefetcherParams *p)
- : ClockedObject(p), cache(nullptr), blkSize(0), system(p->sys),
- onMiss(p->on_miss), onRead(p->on_read),
+ : ClockedObject(p), cache(nullptr), blkSize(0), lBlkSize(0),
+ system(p->sys), onMiss(p->on_miss), onRead(p->on_read),
onWrite(p->on_write), onData(p->on_data), onInst(p->on_inst),
masterId(system->getMasterId(name())),
pageBytes(system->getPageBytes())
@@ -67,6 +68,7 @@ BasePrefetcher::setCache(BaseCache *_cache)
assert(!cache);
cache = _cache;
blkSize = cache->getBlockSize();
+ lBlkSize = floorLog2(blkSize);
}
void
@@ -76,6 +78,7 @@ BasePrefetcher::regStats()
.name(name() + ".num_hwpf_issued")
.desc("number of hwpf issued")
;
+
}
bool
@@ -127,4 +130,32 @@ BasePrefetcher::samePage(Addr a, Addr b) const
return roundDown(a, pageBytes) == roundDown(b, pageBytes);
}
+Addr
+BasePrefetcher::blockAddress(Addr a) const
+{
+ return a & ~(blkSize-1);
+}
+
+Addr
+BasePrefetcher::blockIndex(Addr a) const
+{
+ return a >> lBlkSize;
+}
+
+Addr
+BasePrefetcher::pageAddress(Addr a) const
+{
+ return roundDown(a, pageBytes);
+}
+Addr
+BasePrefetcher::pageOffset(Addr a) const
+{
+ return a & (pageBytes - 1);
+}
+
+Addr
+BasePrefetcher::pageIthBlockAddress(Addr page, uint32_t blockIndex) const
+{
+ return page + (blockIndex << lBlkSize);
+}
diff --git a/src/mem/cache/prefetch/base.hh b/src/mem/cache/prefetch/base.hh
index dd768e0b4..683c59f1f 100644
--- a/src/mem/cache/prefetch/base.hh
+++ b/src/mem/cache/prefetch/base.hh
@@ -68,6 +68,9 @@ class BasePrefetcher : public ClockedObject
/** The block size of the parent cache. */
unsigned blkSize;
+ /** log_2(block size of the parent cache). */
+ unsigned lBlkSize;
+
/** System we belong to */
System* system;
@@ -102,6 +105,17 @@ class BasePrefetcher : public ClockedObject
/** Determine if addresses are on the same page */
bool samePage(Addr a, Addr b) const;
+ /** Determine the address of the block in which a lays */
+ Addr blockAddress(Addr a) const;
+ /** Determine the address of a at block granularity */
+ Addr blockIndex(Addr a) const;
+ /** Determine the address of the page in which a lays */
+ Addr pageAddress(Addr a) const;
+ /** Determine the page-offset of a */
+ Addr pageOffset(Addr a) const;
+ /** Build the address of the i-th block inside the page */
+ Addr pageIthBlockAddress(Addr page, uint32_t i) const;
+
Stats::Scalar pfIssued;