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PAPB VC simplification
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This commit is contained in:
Robin Müller 2023-05-31 14:15:54 +02:00
parent cc60847bd0
commit 8113a71c79
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GPG Key ID: 11D4952C8CCEF814
2 changed files with 47 additions and 49 deletions
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83
linux/ipcore/PapbVcInterface.cpp
View File

@ -28,7 +28,7 @@ ReturnValue_t PapbVcInterface::write(const uint8_t* data, size_t size) {
if (size < 4) {
return returnvalue::FAILED;
}
if (pollInterfaceReadiness(0, true) == returnvalue::OK) {
if (not pollReadyForPacket()) {
startPacketTransfer(ByteWidthCfg::ONE);
} else {
return DirectTmSinkIF::IS_BUSY;
@ -65,19 +65,19 @@ ReturnValue_t PapbVcInterface::write(const uint8_t* data, size_t size) {
// idx += 4;
// }
for (size_t idx = 0; idx < size; idx++) {
if (pollInterfaceReadiness(2, false) == returnvalue::OK) {
// if (pollInterfaceReadiness(2, false) == returnvalue::OK) {
*(vcBaseReg + DATA_REG_OFFSET) = static_cast<uint32_t>(data[idx]);
} else {
abortPacketTransfer();
return returnvalue::FAILED;
//} else {
// abortPacketTransfer();
// return returnvalue::FAILED;
//}
}
}
if (pollInterfaceReadiness(2, false) == returnvalue::OK) {
// if (pollInterfaceReadiness(2, false) == returnvalue::OK) {
completePacketTransfer();
} else {
abortPacketTransfer();
return returnvalue::FAILED;
}
//} else {
// abortPacketTransfer();
// return returnvalue::FAILED;
//}
return returnvalue::OK;
}
@ -87,40 +87,39 @@ void PapbVcInterface::startPacketTransfer(ByteWidthCfg initWidth) {
void PapbVcInterface::completePacketTransfer() { *vcBaseReg = CONFIG_END; }
ReturnValue_t PapbVcInterface::pollInterfaceReadiness(uint32_t maxPollRetries,
bool checkReadyForPacketState) const {
uint32_t busyIdx = 0;
nextDelay.tv_nsec = FIRST_DELAY_PAPB_POLLING_NS;
bool PapbVcInterface::pollReadyForPacket() const {
// uint32_t busyIdx = 0;
// nextDelay.tv_nsec = FIRST_DELAY_PAPB_POLLING_NS;
while (true) {
// while (true) {
// Check if PAPB interface is ready to receive data. Use the configuration register for this.
// Bit 5, see PTME ptme_001_01-0-7-r2 Table 31.
uint32_t reg = *vcBaseReg;
bool busy = (reg >> 5) & 0b1;
bool readyForPacket = (reg >> 6) & 0b1;
if (checkReadyForPacketState) {
if (not busy and readyForPacket) {
return returnvalue::OK;
} else if (not busy and not readyForPacket) {
return PAPB_BUSY;
}
} else if (not busy) {
return returnvalue::OK;
}
busyIdx++;
if (busyIdx >= maxPollRetries) {
return PAPB_BUSY;
}
// Ignore signal handling here for now.
nanosleep(&nextDelay, &remDelay);
// Adaptive delay.
if (nextDelay.tv_nsec * 2 <= MAX_DELAY_PAPB_POLLING_NS) {
nextDelay.tv_nsec *= 2;
}
}
return returnvalue::OK;
// bool busy = (reg >> 5) & 0b1;
return (reg >> 6) & 0b1;
// if (checkReadyForPacketState) {
// if (not busy and readyForPacket) {
// return returnvalue::OK;
// } else if (not busy and not readyForPacket) {
// return PAPB_BUSY;
// }
// } else if (not busy) {
// return returnvalue::OK;
// }
//
// busyIdx++;
// if (busyIdx >= maxPollRetries) {
// return PAPB_BUSY;
// }
//
// // Ignore signal handling here for now.
// nanosleep(&nextDelay, &remDelay);
// // Adaptive delay.
// if (nextDelay.tv_nsec * 2 <= MAX_DELAY_PAPB_POLLING_NS) {
// nextDelay.tv_nsec *= 2;
// }
// }
// return returnvalue::OK;
}
bool PapbVcInterface::isVcInterfaceBufferEmpty() {
@ -141,7 +140,7 @@ bool PapbVcInterface::isVcInterfaceBufferEmpty() {
return false;
}
bool PapbVcInterface::isBusy() const { return pollInterfaceReadiness(0, true) == PAPB_BUSY; }
bool PapbVcInterface::isBusy() const { return not pollReadyForPacket(); }
void PapbVcInterface::cancelTransfer() { abortPacketTransfer(); }

3
linux/ipcore/PapbVcInterface.h
View File

@ -116,8 +116,7 @@ class PapbVcInterface : public VirtualChannelIF {
*
* @return returnvalue::OK when ready to receive data else PAPB_BUSY.
*/
inline ReturnValue_t pollInterfaceReadiness(uint32_t maxPollRetries,
bool checkReadyForPacketState) const;
inline bool pollReadyForPacket() const;
/**
* @brief This function can be used for debugging to check whether there are packets in