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make io device be a little nicer about scheduling retries on the bus

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--HG--
extra : convert_revision : 19a1f0c7bf79d6d8ef235aae60cdbbbcb7de2b79
This commit is contained in:
Ali Saidi 2006-05-31 13:45:37 -04:00
parent aa11330ddb
commit 0193c3fe7d
1 changed files with 14 additions and 10 deletions
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24
src/dev/io_device.cc
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@ -143,15 +143,19 @@ void
DmaPort::recvRetry()
{
Packet* pkt = transmitList.front();
DPRINTF(DMA, "Retry on Packet %#x with senderState: %#x\n",
pkt, pkt->senderState);
if (sendTiming(pkt)) {
DPRINTF(DMA, "-- Done\n");
transmitList.pop_front();
pendingCount--;
assert(pendingCount >= 0);
} else {
DPRINTF(DMA, "-- Failed, queued\n");
bool result = true;
while (result && transmitList.size()) {
DPRINTF(DMA, "Retry on Packet %#x with senderState: %#x\n",
pkt, pkt->senderState);
result = sendTiming(pkt);
if (result) {
DPRINTF(DMA, "-- Done\n");
transmitList.pop_front();
pendingCount--;
assert(pendingCount >= 0);
} else {
DPRINTF(DMA, "-- Failed, queued\n");
}
}
}
@ -201,7 +205,7 @@ DmaPort::sendDma(Packet *pkt)
if (state == Timing) { */
DPRINTF(DMA, "Attempting to send Packet %#x with senderState: %#x\n",
pkt, pkt->senderState);
if (!sendTiming(pkt)) {
if (transmitList.size() || !sendTiming(pkt)) {
transmitList.push_back(pkt);
DPRINTF(DMA, "-- Failed: queued\n");
} else {