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| author | Mitchell Hayenga <Mitchell.Hayenga@ARM.com> | 2011-12-01 00:15:22 -0800 |
|---|---|---|
| committer | Mitchell Hayenga <Mitchell.Hayenga@ARM.com> | 2011-12-01 00:15:22 -0800 |
| commit | fa753c14549a768f0b8475e4e183acbdc394c248 (patch) | |
| tree | b1a47e7423b7d5c7a085ea64c7ba9fe74038e83b /src/dev/io_device.cc | |
| parent | 946f7f0f55215d0eefe29fed2e4c123e23b9848f (diff) | |
| download | gem5-fa753c14549a768f0b8475e4e183acbdc394c248.tar.xz | |
Device: Make changes necessary to support a coherent page walker cache.
Adds the flag 'recvSnoops' which enables pagewalkers using DmaPorts,
to properly configure snoops.
--HG--
extra : rebase_source : 64207bef62c3268ddff2236ee4adae873812325f
Diffstat (limited to 'src/dev/io_device.cc')
| -rw-r--r-- | src/dev/io_device.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/dev/io_device.cc b/src/dev/io_device.cc index 5e2395bf9..5c13b5091 100644 --- a/src/dev/io_device.cc +++ b/src/dev/io_device.cc @@ -115,11 +115,13 @@ BasicPioDevice::addressRanges(AddrRangeList &range_list) } -DmaPort::DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff) +DmaPort::DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff, + bool recv_snoops) : Port(dev->name() + "-dmaport", dev), device(dev), sys(s), pendingCount(0), actionInProgress(0), drainEvent(NULL), backoffTime(0), minBackoffDelay(min_backoff), - maxBackoffDelay(max_backoff), inRetry(false), backoffEvent(this) + maxBackoffDelay(max_backoff), inRetry(false), recvSnoops(recv_snoops), + snoopRangeSent(false), backoffEvent(this) { } bool @@ -141,6 +143,12 @@ DmaPort::recvTiming(PacketPtr pkt) pkt->reinitNacked(); queueDma(pkt, true); } else if (pkt->senderState) { + if (recvSnoops) { + if (pkt->isRequest()) { + return true; + } + } + DmaReqState *state; backoffTime >>= 2; |