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Diffstat (limited to 'src/systemc/tests/include/SimpleLTInitiator3_DMI.h')
-rw-r--r-- | src/systemc/tests/include/SimpleLTInitiator3_DMI.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/systemc/tests/include/SimpleLTInitiator3_DMI.h b/src/systemc/tests/include/SimpleLTInitiator3_DMI.h new file mode 100644 index 000000000..6453a16a9 --- /dev/null +++ b/src/systemc/tests/include/SimpleLTInitiator3_DMI.h @@ -0,0 +1,244 @@ +/***************************************************************************** + + Licensed to Accellera Systems Initiative Inc. (Accellera) under one or + more contributor license agreements. See the NOTICE file distributed + with this work for additional information regarding copyright ownership. + Accellera licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with the + License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied. See the License for the specific language governing + permissions and limitations under the License. + + *****************************************************************************/ + +//==================================================================== +// Nov 06, 2008 +// +// Updated by: +// Xiaopeng Qiu, JEDA Technologies, Inc +// Email: qiuxp@jedatechnologies.net +// +// To fix violations of TLM2.0 rules, which are detected by JEDA +// TLM2.0 checker. +// +//==================================================================== + +#ifndef __SIMPLE_LT_INITIATOR3_DMI_H__ +#define __SIMPLE_LT_INITIATOR3_DMI_H__ + +#include "tlm.h" +#include "tlm_utils/simple_initiator_socket.h" +#include <systemc> +#include <cassert> +#include <iostream> +#include <map> + +class SimpleLTInitiator3_dmi : public sc_core::sc_module +{ +public: + typedef tlm::tlm_generic_payload transaction_type; + typedef tlm::tlm_dmi dmi_type; + typedef tlm::tlm_phase phase_type; + typedef tlm::tlm_sync_enum sync_enum_type; + typedef tlm_utils::simple_initiator_socket<SimpleLTInitiator3_dmi> initiator_socket_type; + +public: + initiator_socket_type socket; + +public: + SC_HAS_PROCESS(SimpleLTInitiator3_dmi); + SimpleLTInitiator3_dmi(sc_core::sc_module_name name, + unsigned int nrOfTransactions = 0x5, + unsigned int baseAddress = 0x0) : + sc_core::sc_module(name), + socket("socket"), + mNrOfTransactions(nrOfTransactions), + mBaseAddress(baseAddress), + mTransactionCount(0) + { + mDMIDataReads.first.set_start_address(1); + mDMIDataReads.first.set_end_address(0); + mDMIDataWrites.first.set_start_address(1); + mDMIDataWrites.first.set_end_address(0); + + socket.register_invalidate_direct_mem_ptr(this, &SimpleLTInitiator3_dmi::invalidate_direct_mem_ptr); + + // Initiator thread + SC_THREAD(run); + } + + bool initTransaction(transaction_type& trans) + { + if (mTransactionCount < mNrOfTransactions) { + trans.set_address(mBaseAddress + 4*mTransactionCount); + mData = mTransactionCount; + trans.set_command(tlm::TLM_WRITE_COMMAND); + + } else if (mTransactionCount < 2 * mNrOfTransactions) { + trans.set_address(mBaseAddress + 4*(mTransactionCount-mNrOfTransactions)); + mData = 0; + trans.set_command(tlm::TLM_READ_COMMAND); + + } else { + return false; + } + + trans.set_data_ptr(reinterpret_cast<unsigned char*>(&mData)); + trans.set_data_length(4); + trans.set_streaming_width(4); + trans.set_dmi_allowed(false); + trans.set_response_status(tlm::TLM_INCOMPLETE_RESPONSE); + + ++mTransactionCount; + return true; + } + + void logStartTransation(transaction_type& trans) + { + if (trans.get_command() == tlm::TLM_WRITE_COMMAND) { + std::cout << name() << ": Send write request: A = 0x" + << std::hex << (unsigned int)trans.get_address() + << ", D = 0x" << mData << std::dec + << " @ " << sc_core::sc_time_stamp() << std::endl; + + } else { + std::cout << name() << ": Send read request: A = 0x" + << std::hex << (unsigned int)trans.get_address() << std::dec + << " @ " << sc_core::sc_time_stamp() << std::endl; + } + } + + void logEndTransaction(transaction_type& trans) + { + if (trans.get_response_status() != tlm::TLM_OK_RESPONSE) { + std::cout << name() << ": Received error response @ " + << sc_core::sc_time_stamp() << std::endl; + + } else { + std::cout << name() << ": Received ok response"; + if (trans.get_command() == tlm::TLM_READ_COMMAND) { + std::cout << ": D = 0x" << std::hex << mData << std::dec; + } + std::cout << " @ " << sc_core::sc_time_stamp() << std::endl; + } + } + + std::pair<dmi_type, bool>& getDMIData(const transaction_type& trans) + { + if (trans.get_command() == tlm::TLM_READ_COMMAND) { + return mDMIDataReads; + + } else { // WRITE + return mDMIDataWrites; + } + } + + void run() + { + transaction_type trans; + sc_core::sc_time t; + + while (initTransaction(trans)) { + // Create transaction and initialise t + t = sc_core::SC_ZERO_TIME; + + logStartTransation(trans); + + /////////////////////////////////////////////////////////// + // DMI handling: + // We do *not* use the DMI hint to check if it makes sense to ask for + // DMI pointers. So the pattern is: + // - if the address is not covered by a DMI region try to acquire DMI + // pointers + // - if we have a DMI pointer, do the DMI "transaction" + // - otherwise fall back to a normal transaction + /////////////////////////////////////////////////////////// + + std::pair<dmi_type, bool>& dmi_data = getDMIData(trans); + + // Check if we need to acquire a DMI pointer + if((trans.get_address() < dmi_data.first.get_start_address()) || + (trans.get_address() > dmi_data.first.get_end_address()) ) + { + sc_dt::uint64 address = trans.get_address(); //save original address + dmi_data.second = + socket->get_direct_mem_ptr(trans, + dmi_data.first); + trans.set_address(address); + } + // Do DMI "transaction" if we have a valid region + if (dmi_data.second && + (trans.get_address() >= dmi_data.first.get_start_address()) && + (trans.get_address() <= dmi_data.first.get_end_address()) ) + { + // We can handle the data here. As the logEndTransaction is assuming + // something to happen in the data structure, we really need to + // do this: + trans.set_response_status(tlm::TLM_OK_RESPONSE); + + sc_dt::uint64 tmp = trans.get_address() - dmi_data.first.get_start_address(); + if (trans.get_command() == tlm::TLM_WRITE_COMMAND) + { + *(unsigned int*)&dmi_data.first.get_dmi_ptr()[tmp] = mData; + } + else + { + mData = *(unsigned int*)&dmi_data.first.get_dmi_ptr()[tmp]; + } + + // Do the wait immediately. Note that doing the wait here eats almost + // all the performance anyway, so we only gain something if we're + // using temporal decoupling. + if (trans.get_command() == tlm::TLM_WRITE_COMMAND) { + wait(dmi_data.first.get_write_latency()); + + } else { + wait(dmi_data.first.get_read_latency()); + } + } + else // we need a full transaction + { + socket->b_transport(trans, t); + // wait for the returned delay + wait(t); + } + + logEndTransaction(trans); + } + wait(); + + } + + // Invalidate DMI pointer(s) + void invalidate_direct_mem_ptr(sc_dt::uint64 start_range, + sc_dt::uint64 end_range) + { + // FIXME: probably faster to always invalidate everything? + if (start_range <= mDMIDataReads.first.get_end_address ()&& + end_range >= mDMIDataReads.first.get_start_address()) { + mDMIDataReads.second = false; + } + if (start_range <= mDMIDataWrites.first.get_end_address ()&& + end_range >= mDMIDataWrites.first.get_start_address()) { + mDMIDataWrites.second = false; + } + } + +private: + std::pair<dmi_type, bool> mDMIDataReads; + std::pair<dmi_type, bool> mDMIDataWrites; + + sc_core::sc_event mEndEvent; + unsigned int mNrOfTransactions; + unsigned int mBaseAddress; + unsigned int mTransactionCount; + unsigned int mData; +}; + +#endif |