simple_mem.cc (9090:e4e22240398f) simple_mem.cc (9120:48eeef8a0997)
1/*
2 * Copyright (c) 2010-2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

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44
45#include "base/random.hh"
46#include "mem/simple_mem.hh"
47
48using namespace std;
49
50SimpleMemory::SimpleMemory(const Params* p) :
51 AbstractMemory(p),
1/*
2 * Copyright (c) 2010-2012 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software

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44
45#include "base/random.hh"
46#include "mem/simple_mem.hh"
47
48using namespace std;
49
50SimpleMemory::SimpleMemory(const Params* p) :
51 AbstractMemory(p),
52 lat(p->latency), lat_var(p->latency_var)
52 port(name() + ".port", *this), lat(p->latency), lat_var(p->latency_var)
53{
53{
54 for (size_t i = 0; i < p->port_port_connection_count; ++i) {
55 ports.push_back(new MemoryPort(csprintf("%s-port-%d", name(), i),
56 *this));
57 }
58}
59
60void
61SimpleMemory::init()
62{
54}
55
56void
57SimpleMemory::init()
58{
63 for (vector<MemoryPort*>::iterator p = ports.begin(); p != ports.end();
64 ++p) {
65 if (!(*p)->isConnected()) {
66 fatal("SimpleMemory port %s is unconnected!\n", (*p)->name());
67 } else {
68 (*p)->sendRangeChange();
69 }
59 // allow unconnected memories as this is used in several ruby
60 // systems at the moment
61 if (port.isConnected()) {
62 port.sendRangeChange();
70 }
71}
72
73Tick
74SimpleMemory::calculateLatency(PacketPtr pkt)
75{
76 if (pkt->memInhibitAsserted()) {
77 return 0;

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97}
98
99SlavePort &
100SimpleMemory::getSlavePort(const std::string &if_name, int idx)
101{
102 if (if_name != "port") {
103 return MemObject::getSlavePort(if_name, idx);
104 } else {
63 }
64}
65
66Tick
67SimpleMemory::calculateLatency(PacketPtr pkt)
68{
69 if (pkt->memInhibitAsserted()) {
70 return 0;

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90}
91
92SlavePort &
93SimpleMemory::getSlavePort(const std::string &if_name, int idx)
94{
95 if (if_name != "port") {
96 return MemObject::getSlavePort(if_name, idx);
97 } else {
105 if (idx >= static_cast<int>(ports.size())) {
106 fatal("SimpleMemory::getSlavePort: unknown index %d\n", idx);
107 }
108
109 return *ports[idx];
98 return port;
110 }
111}
112
113unsigned int
114SimpleMemory::drain(Event *de)
115{
99 }
100}
101
102unsigned int
103SimpleMemory::drain(Event *de)
104{
116 int count = 0;
117 for (vector<MemoryPort*>::iterator p = ports.begin(); p != ports.end();
118 ++p) {
119 count += (*p)->drain(de);
120 }
105 int count = port.drain(de);
121
122 if (count)
123 changeState(Draining);
124 else
125 changeState(Drained);
126 return count;
127}
128

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107 if (count)
108 changeState(Draining);
109 else
110 changeState(Drained);
111 return count;
112}
113

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