b913af440b
This patch removes printConfig() functions from all structures in Ruby. Most of the information is already part of config.ini, and where ever it is not, it would become in due course.
177 lines
5.9 KiB
C++
177 lines
5.9 KiB
C++
/*
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* Copyright (c) 2008 Mark D. Hill and David A. Wood
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "debug/RubyDma.hh"
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#include "debug/RubyStats.hh"
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#include "mem/protocol/SequencerMsg.hh"
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#include "mem/protocol/SequencerRequestType.hh"
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#include "mem/ruby/buffers/MessageBuffer.hh"
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#include "mem/ruby/system/DMASequencer.hh"
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#include "mem/ruby/system/System.hh"
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DMASequencer::DMASequencer(const Params *p)
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: RubyPort(p)
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{
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}
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void
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DMASequencer::init()
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{
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RubyPort::init();
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m_is_busy = false;
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m_data_block_mask = ~ (~0 << RubySystem::getBlockSizeBits());
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}
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RequestStatus
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DMASequencer::makeRequest(PacketPtr pkt)
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{
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if (m_is_busy) {
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return RequestStatus_BufferFull;
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}
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uint64_t paddr = pkt->getAddr();
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uint8_t* data = pkt->getPtr<uint8_t>(true);
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int len = pkt->getSize();
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bool write = pkt->isWrite();
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assert(!m_is_busy); // only support one outstanding DMA request
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m_is_busy = true;
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active_request.start_paddr = paddr;
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active_request.write = write;
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active_request.data = data;
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active_request.len = len;
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active_request.bytes_completed = 0;
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active_request.bytes_issued = 0;
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active_request.pkt = pkt;
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SequencerMsg *msg = new SequencerMsg;
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msg->getPhysicalAddress() = Address(paddr);
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msg->getLineAddress() = line_address(msg->getPhysicalAddress());
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msg->getType() = write ? SequencerRequestType_ST : SequencerRequestType_LD;
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int offset = paddr & m_data_block_mask;
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msg->getLen() = (offset + len) <= RubySystem::getBlockSizeBytes() ?
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len : RubySystem::getBlockSizeBytes() - offset;
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if (write && (data != NULL)) {
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if (active_request.data != NULL) {
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msg->getDataBlk().setData(data, offset, msg->getLen());
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}
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}
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assert(m_mandatory_q_ptr != NULL);
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m_mandatory_q_ptr->enqueue(msg);
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active_request.bytes_issued += msg->getLen();
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return RequestStatus_Issued;
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}
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void
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DMASequencer::issueNext()
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{
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assert(m_is_busy == true);
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active_request.bytes_completed = active_request.bytes_issued;
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if (active_request.len == active_request.bytes_completed) {
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//
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// Must unset the busy flag before calling back the dma port because
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// the callback may cause a previously nacked request to be reissued
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//
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DPRINTF(RubyDma, "DMA request completed\n");
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m_is_busy = false;
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ruby_hit_callback(active_request.pkt);
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return;
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}
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SequencerMsg *msg = new SequencerMsg;
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msg->getPhysicalAddress() = Address(active_request.start_paddr +
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active_request.bytes_completed);
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assert((msg->getPhysicalAddress().getAddress() & m_data_block_mask) == 0);
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msg->getLineAddress() = line_address(msg->getPhysicalAddress());
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msg->getType() = (active_request.write ? SequencerRequestType_ST :
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SequencerRequestType_LD);
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msg->getLen() =
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(active_request.len -
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active_request.bytes_completed < RubySystem::getBlockSizeBytes() ?
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active_request.len - active_request.bytes_completed :
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RubySystem::getBlockSizeBytes());
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if (active_request.write) {
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msg->getDataBlk().
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setData(&active_request.data[active_request.bytes_completed],
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0, msg->getLen());
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msg->getType() = SequencerRequestType_ST;
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} else {
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msg->getType() = SequencerRequestType_LD;
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}
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assert(m_mandatory_q_ptr != NULL);
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m_mandatory_q_ptr->enqueue(msg);
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active_request.bytes_issued += msg->getLen();
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DPRINTF(RubyDma,
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"DMA request bytes issued %d, bytes completed %d, total len %d\n",
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active_request.bytes_issued, active_request.bytes_completed,
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active_request.len);
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}
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void
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DMASequencer::dataCallback(const DataBlock & dblk)
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{
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assert(m_is_busy == true);
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int len = active_request.bytes_issued - active_request.bytes_completed;
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int offset = 0;
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if (active_request.bytes_completed == 0)
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offset = active_request.start_paddr & m_data_block_mask;
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assert(active_request.write == false);
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if (active_request.data != NULL) {
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memcpy(&active_request.data[active_request.bytes_completed],
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dblk.getData(offset, len), len);
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}
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issueNext();
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}
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void
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DMASequencer::ackCallback()
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{
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issueNext();
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}
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void
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DMASequencer::recordRequestType(DMASequencerRequestType requestType) {
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DPRINTF(RubyStats, "Recorded statistic: %s\n",
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DMASequencerRequestType_to_string(requestType));
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}
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DMASequencer *
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DMASequencerParams::create()
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{
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return new DMASequencer(this);
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}
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