DMASequencer.cc revision 6355
16285Snate@binkert.org 26285Snate@binkert.org#include "mem/ruby/system/DMASequencer.hh" 36285Snate@binkert.org#include "mem/ruby/buffers/MessageBuffer.hh" 46285Snate@binkert.org#include "mem/ruby/slicc_interface/AbstractController.hh" 56285Snate@binkert.org 66285Snate@binkert.org/* SLICC generated types */ 76285Snate@binkert.org#include "mem/protocol/DMARequestMsg.hh" 86285Snate@binkert.org#include "mem/protocol/DMARequestType.hh" 96285Snate@binkert.org#include "mem/protocol/DMAResponseMsg.hh" 106285Snate@binkert.org#include "mem/ruby/system/System.hh" 116285Snate@binkert.org 126285Snate@binkert.orgDMASequencer::DMASequencer(const string & name) 136285Snate@binkert.org : RubyPort(name) 146285Snate@binkert.org{ 156285Snate@binkert.org} 166285Snate@binkert.org 176285Snate@binkert.orgvoid DMASequencer::init(const vector<string> & argv) 186285Snate@binkert.org{ 196285Snate@binkert.org m_version = -1; 206285Snate@binkert.org m_controller = NULL; 216285Snate@binkert.org for (size_t i=0;i<argv.size();i+=2) { 226285Snate@binkert.org if (argv[i] == "controller") 236285Snate@binkert.org m_controller = RubySystem::getController(argv[i+1]); 246285Snate@binkert.org else if (argv[i] == "version") 256285Snate@binkert.org m_version = atoi(argv[i+1].c_str()); 266285Snate@binkert.org } 276285Snate@binkert.org assert(m_controller != NULL); 286285Snate@binkert.org assert(m_version != -1); 296285Snate@binkert.org 306285Snate@binkert.org m_mandatory_q_ptr = m_controller->getMandatoryQueue(); 316285Snate@binkert.org m_is_busy = false; 326285Snate@binkert.org} 336285Snate@binkert.org 346285Snate@binkert.orgint64_t DMASequencer::makeRequest(const RubyRequest & request) 356285Snate@binkert.org{ 366285Snate@binkert.org uint64_t paddr = request.paddr; 376285Snate@binkert.org uint8_t* data = request.data; 386285Snate@binkert.org int len = request.len; 396285Snate@binkert.org bool write = false; 406285Snate@binkert.org switch(request.type) { 416285Snate@binkert.org case RubyRequestType_LD: 426285Snate@binkert.org write = false; 436285Snate@binkert.org break; 446285Snate@binkert.org case RubyRequestType_ST: 456285Snate@binkert.org write = true; 466285Snate@binkert.org break; 476285Snate@binkert.org case RubyRequestType_NULL: 486285Snate@binkert.org case RubyRequestType_IFETCH: 496350Spdudnik@gmail.com case RubyRequestType_Locked_Read: 506350Spdudnik@gmail.com case RubyRequestType_Locked_Write: 516355Spdudnik@gmail.com case RubyRequestType_RMW_Read: 526355Spdudnik@gmail.com case RubyRequestType_RMW_Write: 536285Snate@binkert.org assert(0); 546285Snate@binkert.org } 556285Snate@binkert.org 566285Snate@binkert.org assert(!m_is_busy); 576285Snate@binkert.org m_is_busy = true; 586285Snate@binkert.org 596285Snate@binkert.org active_request.start_paddr = paddr; 606285Snate@binkert.org active_request.write = write; 616285Snate@binkert.org active_request.data = data; 626285Snate@binkert.org active_request.len = len; 636285Snate@binkert.org active_request.bytes_completed = 0; 646285Snate@binkert.org active_request.bytes_issued = 0; 656285Snate@binkert.org active_request.id = makeUniqueRequestID(); 666285Snate@binkert.org 676285Snate@binkert.org DMARequestMsg msg; 686285Snate@binkert.org msg.getPhysicalAddress() = Address(paddr); 696285Snate@binkert.org msg.getType() = write ? DMARequestType_WRITE : DMARequestType_READ; 706285Snate@binkert.org msg.getOffset() = paddr & RubyConfig::dataBlockMask(); 716285Snate@binkert.org msg.getLen() = (msg.getOffset() + len) < RubySystem::getBlockSizeBytes() ? 726285Snate@binkert.org (msg.getOffset() + len) : 736285Snate@binkert.org RubySystem::getBlockSizeBytes() - msg.getOffset(); 746285Snate@binkert.org if (write) { 756285Snate@binkert.org msg.getType() = DMARequestType_WRITE; 766285Snate@binkert.org msg.getDataBlk().setData(data, 0, msg.getLen()); 776285Snate@binkert.org } else { 786285Snate@binkert.org msg.getType() = DMARequestType_READ; 796285Snate@binkert.org } 806285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg); 816285Snate@binkert.org active_request.bytes_issued += msg.getLen(); 826285Snate@binkert.org 836285Snate@binkert.org return active_request.id; 846285Snate@binkert.org} 856285Snate@binkert.org 866285Snate@binkert.orgvoid DMASequencer::issueNext() 876285Snate@binkert.org{ 886285Snate@binkert.org assert(m_is_busy == true); 896285Snate@binkert.org active_request.bytes_completed = active_request.bytes_issued; 906285Snate@binkert.org if (active_request.len == active_request.bytes_completed) { 916285Snate@binkert.org m_hit_callback(active_request.id); 926285Snate@binkert.org m_is_busy = false; 936285Snate@binkert.org return; 946285Snate@binkert.org } 956285Snate@binkert.org 966285Snate@binkert.org DMARequestMsg msg; 976285Snate@binkert.org msg.getPhysicalAddress() = Address(active_request.start_paddr + active_request.bytes_completed); 986285Snate@binkert.org assert((msg.getPhysicalAddress().getAddress() & RubyConfig::dataBlockMask()) == 0); 996285Snate@binkert.org msg.getOffset() = 0; 1006285Snate@binkert.org msg.getType() = active_request.write ? DMARequestType_WRITE : DMARequestType_READ; 1016285Snate@binkert.org msg.getLen() = active_request.len - active_request.bytes_completed < RubySystem::getBlockSizeBytes() ? 1026285Snate@binkert.org active_request.len - active_request.bytes_completed : 1036285Snate@binkert.org RubySystem::getBlockSizeBytes(); 1046285Snate@binkert.org if (active_request.write) { 1056285Snate@binkert.org msg.getDataBlk().setData(&active_request.data[active_request.bytes_completed], 0, msg.getLen()); 1066285Snate@binkert.org msg.getType() = DMARequestType_WRITE; 1076285Snate@binkert.org } else { 1086285Snate@binkert.org msg.getType() = DMARequestType_READ; 1096285Snate@binkert.org } 1106285Snate@binkert.org m_mandatory_q_ptr->enqueue(msg); 1116285Snate@binkert.org active_request.bytes_issued += msg.getLen(); 1126285Snate@binkert.org} 1136285Snate@binkert.org 1146285Snate@binkert.orgvoid DMASequencer::dataCallback(const DataBlock & dblk) 1156285Snate@binkert.org{ 1166285Snate@binkert.org assert(m_is_busy == true); 1176285Snate@binkert.org int len = active_request.bytes_issued - active_request.bytes_completed; 1186285Snate@binkert.org int offset = 0; 1196285Snate@binkert.org if (active_request.bytes_completed == 0) 1206285Snate@binkert.org offset = active_request.start_paddr & RubyConfig::dataBlockMask(); 1216285Snate@binkert.org memcpy(&active_request.data[active_request.bytes_completed], dblk.getData(offset, len), len); 1226285Snate@binkert.org issueNext(); 1236285Snate@binkert.org} 1246285Snate@binkert.org 1256285Snate@binkert.orgvoid DMASequencer::ackCallback() 1266285Snate@binkert.org{ 1276285Snate@binkert.org issueNext(); 1286285Snate@binkert.org} 1296285Snate@binkert.org 1306285Snate@binkert.orgvoid DMASequencer::printConfig(ostream & out) 1316285Snate@binkert.org{ 1326285Snate@binkert.org 1336285Snate@binkert.org} 134