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-rw-r--r--src/dev/io_device.cc16
1 files changed, 15 insertions, 1 deletions
diff --git a/src/dev/io_device.cc b/src/dev/io_device.cc
index d430ace72..6528bd81c 100644
--- a/src/dev/io_device.cc
+++ b/src/dev/io_device.cc
@@ -218,6 +218,9 @@ DmaPort::dmaAction(Packet::Command cmd, Addr addr, int size, Event *event,
DmaReqState *reqState = new DmaReqState(event, this, size);
+
+ DPRINTF(DMA, "Starting DMA for addr: %#x size: %d sched: %d\n", addr, size,
+ event->scheduled());
for (ChunkGenerator gen(addr, size, peerBlockSize());
!gen.done(); gen.next()) {
Request *req = new Request(gen.addr(), gen.size(), 0);
@@ -231,6 +234,8 @@ DmaPort::dmaAction(Packet::Command cmd, Addr addr, int size, Event *event,
assert(pendingCount >= 0);
pendingCount++;
+ DPRINTF(DMA, "--Queuing DMA for addr: %#x size: %d\n", gen.addr(),
+ gen.size());
queueDma(pkt);
}
@@ -281,19 +286,28 @@ DmaPort::sendDma()
if (transmitList.size() && backoffTime && !inRetry &&
!backoffEvent.scheduled()) {
+ DPRINTF(DMA, "-- Scheduling backoff timer for %d\n",
+ backoffTime+curTick);
backoffEvent.schedule(backoffTime+curTick);
}
} else if (state == System::Atomic) {
transmitList.pop_front();
Tick lat;
+ DPRINTF(DMA, "--Sending DMA for addr: %#x size: %d\n",
+ pkt->req->getPaddr(), pkt->req->getSize());
lat = sendAtomic(pkt);
assert(pkt->senderState);
DmaReqState *state = dynamic_cast<DmaReqState*>(pkt->senderState);
assert(state);
-
state->numBytes += pkt->req->getSize();
+
+ DPRINTF(DMA, "--Received response for DMA for addr: %#x size: %d nb: %d, tot: %d sched %d\n",
+ pkt->req->getPaddr(), pkt->req->getSize(), state->numBytes,
+ state->totBytes, state->completionEvent->scheduled());
+
if (state->totBytes == state->numBytes) {
+ assert(!state->completionEvent->scheduled());
state->completionEvent->schedule(curTick + lat);
delete state;
delete pkt->req;