diff options
| -rw-r--r-- | src/mem/cache/base.cc | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/mem/cache/base.cc b/src/mem/cache/base.cc index 204377044..7ba3065be 100644 --- a/src/mem/cache/base.cc +++ b/src/mem/cache/base.cc @@ -1037,9 +1037,12 @@ BaseCache::access(PacketPtr pkt, CacheBlk *&blk, Cycles &lat, pkt->writeDataToBlock(blk->data, blkSize); DPRINTF(Cache, "%s new state is %s\n", __func__, blk->print()); incHitCount(pkt); - // populate the time when the block will be ready to access. + + // When the packet metadata arrives, the tag lookup will be done while + // the payload is arriving. Then the block will be ready to access as + // soon as the fill is done blk->setWhenReady(clockEdge(fillLatency) + pkt->headerDelay + - pkt->payloadDelay); + std::max(cyclesToTicks(tag_latency), (uint64_t)pkt->payloadDelay)); return true; } else if (pkt->cmd == MemCmd::CleanEvict) { if (blk) { @@ -1094,9 +1097,13 @@ BaseCache::access(PacketPtr pkt, CacheBlk *&blk, Cycles &lat, DPRINTF(Cache, "%s new state is %s\n", __func__, blk->print()); incHitCount(pkt); - // populate the time when the block will be ready to access. + + // When the packet metadata arrives, the tag lookup will be done while + // the payload is arriving. Then the block will be ready to access as + // soon as the fill is done blk->setWhenReady(clockEdge(fillLatency) + pkt->headerDelay + - pkt->payloadDelay); + std::max(cyclesToTicks(tag_latency), (uint64_t)pkt->payloadDelay)); + // if this a write-through packet it will be sent to cache // below return !pkt->writeThrough(); |