1 2#include "mem/ruby/system/DMASequencer.hh" 3#include "mem/ruby/buffers/MessageBuffer.hh" 4#include "mem/ruby/slicc_interface/AbstractController.hh" 5 6/* SLICC generated types */ 7#include "mem/protocol/SequencerMsg.hh" 8#include "mem/protocol/SequencerRequestType.hh" 9#include "mem/ruby/system/System.hh" 10 |
11// 12// Fix me: This code needs comments! 13// 14 |
15DMASequencer::DMASequencer(const Params *p) 16 : RubyPort(p) 17{ 18} 19 20void DMASequencer::init() 21{ |
22 RubyPort::init(); |
23 m_is_busy = false; 24 m_data_block_mask = ~ (~0 << RubySystem::getBlockSizeBits()); 25} 26 27int64_t DMASequencer::makeRequest(const RubyRequest & request) 28{ 29 uint64_t paddr = request.paddr; 30 uint8_t* data = request.data; --- 27 unchanged lines hidden (view full) --- 58 active_request.bytes_issued = 0; 59 active_request.id = makeUniqueRequestID(); 60 61 SequencerMsg msg; 62 msg.getPhysicalAddress() = Address(paddr); 63 msg.getLineAddress() = line_address(msg.getPhysicalAddress()); 64 msg.getType() = write ? SequencerRequestType_ST : SequencerRequestType_LD; 65 int offset = paddr & m_data_block_mask; |
66 |
67 msg.getLen() = (offset + len) <= RubySystem::getBlockSizeBytes() ? 68 len : 69 RubySystem::getBlockSizeBytes() - offset; |
70 71 if (write) { |
72 msg.getDataBlk().setData(data, offset, msg.getLen()); |
73 } 74 75 assert(m_mandatory_q_ptr != NULL); |
76 m_mandatory_q_ptr->enqueue(msg); 77 active_request.bytes_issued += msg.getLen(); 78 79 return active_request.id; 80} 81 82void DMASequencer::issueNext() 83{ 84 assert(m_is_busy == true); 85 active_request.bytes_completed = active_request.bytes_issued; 86 if (active_request.len == active_request.bytes_completed) { 87 m_hit_callback(active_request.id); 88 m_is_busy = false; 89 return; 90 } 91 92 SequencerMsg msg; 93 msg.getPhysicalAddress() = Address(active_request.start_paddr + 94 active_request.bytes_completed); |
95 |
96 assert((msg.getPhysicalAddress().getAddress() & m_data_block_mask) == 0); 97 msg.getLineAddress() = line_address(msg.getPhysicalAddress()); |
98 |
99 msg.getType() = (active_request.write ? SequencerRequestType_ST : 100 SequencerRequestType_LD); |
101 |
102 msg.getLen() = (active_request.len - 103 active_request.bytes_completed < RubySystem::getBlockSizeBytes() ? 104 active_request.len - active_request.bytes_completed : 105 RubySystem::getBlockSizeBytes()); |
106 |
107 if (active_request.write) { 108 msg.getDataBlk().setData(&active_request.data[active_request.bytes_completed], 109 0, msg.getLen()); 110 msg.getType() = SequencerRequestType_ST; 111 } else { 112 msg.getType() = SequencerRequestType_LD; 113 } |
114 115 assert(m_mandatory_q_ptr != NULL); |
116 m_mandatory_q_ptr->enqueue(msg); 117 active_request.bytes_issued += msg.getLen(); 118} 119 120void DMASequencer::dataCallback(const DataBlock & dblk) 121{ 122 assert(m_is_busy == true); 123 int len = active_request.bytes_issued - active_request.bytes_completed; --- 25 unchanged lines hidden --- |