summaryrefslogtreecommitdiff
path: root/src/dev/x86/intdev.hh
diff options
context:
space:
mode:
authorMarco Balboni <Marco.Balboni@ARM.com>2015-02-11 10:23:47 -0500
committerMarco Balboni <Marco.Balboni@ARM.com>2015-02-11 10:23:47 -0500
commit268d9e59c5e69a00456a40c837b0150a8f3f6bf8 (patch)
treeabb89f1dcd542109c163b76fb632ee8e5444ab18 /src/dev/x86/intdev.hh
parente2828587b3f28c4f37f0fe598209290bc3d41de0 (diff)
downloadgem5-268d9e59c5e69a00456a40c837b0150a8f3f6bf8.tar.xz
mem: Clarification of packet crossbar timings
This patch clarifies the packet timings annotated when going through a crossbar. The old 'firstWordDelay' is replaced by 'headerDelay' that represents the delay associated to the delivery of the header of the packet. The old 'lastWordDelay' is replaced by 'payloadDelay' that represents the delay needed to processing the payload of the packet. For now the uses and values remain identical. However, going forward the payloadDelay will be additive, and not include the headerDelay. Follow-on patches will make the headerDelay capture the pipeline latency incurred in the crossbar, whereas the payloadDelay will capture the additional serialisation delay.
Diffstat (limited to 'src/dev/x86/intdev.hh')
-rw-r--r--src/dev/x86/intdev.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/dev/x86/intdev.hh b/src/dev/x86/intdev.hh
index 294a2b887..d63e64010 100644
--- a/src/dev/x86/intdev.hh
+++ b/src/dev/x86/intdev.hh
@@ -82,7 +82,7 @@ class IntDevice
Tick recvMessage(PacketPtr pkt)
{
// @todo someone should pay for this
- pkt->firstWordDelay = pkt->lastWordDelay = 0;
+ pkt->headerDelay = pkt->payloadDelay = 0;
return device->recvMessage(pkt);
}
};