pagetable_walker.hh (8711:c7e14f52c682) pagetable_walker.hh (8832:247fee427324)
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
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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45#include "arch/x86/pagetable.hh"
46#include "arch/x86/tlb.hh"
47#include "base/fast_alloc.hh"
48#include "base/types.hh"
49#include "mem/mem_object.hh"
50#include "mem/packet.hh"
51#include "params/X86PagetableWalker.hh"
52#include "sim/faults.hh"
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
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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45#include "arch/x86/pagetable.hh"
46#include "arch/x86/tlb.hh"
47#include "base/fast_alloc.hh"
48#include "base/types.hh"
49#include "mem/mem_object.hh"
50#include "mem/packet.hh"
51#include "params/X86PagetableWalker.hh"
52#include "sim/faults.hh"
53#include "sim/system.hh"
53
54class ThreadContext;
55
56namespace X86ISA
57{
58 class Walker : public MemObject
59 {
60 protected:
61 // Port for accessing memory
62 class WalkerPort : public Port
63 {
64 public:
65 WalkerPort(const std::string &_name, Walker * _walker) :
66 Port(_name, _walker), walker(_walker)
67 {}
68
69 protected:
54
55class ThreadContext;
56
57namespace X86ISA
58{
59 class Walker : public MemObject
60 {
61 protected:
62 // Port for accessing memory
63 class WalkerPort : public Port
64 {
65 public:
66 WalkerPort(const std::string &_name, Walker * _walker) :
67 Port(_name, _walker), walker(_walker)
68 {}
69
70 protected:
70 Walker * walker;
71 Walker *walker;
71
72 bool recvTiming(PacketPtr pkt);
73 Tick recvAtomic(PacketPtr pkt);
74 void recvFunctional(PacketPtr pkt);
75 void recvRangeChange();
76 void recvRetry();
77 bool isSnooping() { return true; }
78 };

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92 LongPML4, LongPDP, LongPD, LongPTE,
93 // PAE legacy mode
94 PAEPDP, PAEPD, PAEPTE,
95 // Non PAE legacy mode with and without PSE
96 PSEPD, PD, PTE
97 };
98
99 protected:
72
73 bool recvTiming(PacketPtr pkt);
74 Tick recvAtomic(PacketPtr pkt);
75 void recvFunctional(PacketPtr pkt);
76 void recvRangeChange();
77 void recvRetry();
78 bool isSnooping() { return true; }
79 };

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93 LongPML4, LongPDP, LongPD, LongPTE,
94 // PAE legacy mode
95 PAEPDP, PAEPD, PAEPTE,
96 // Non PAE legacy mode with and without PSE
97 PSEPD, PD, PTE
98 };
99
100 protected:
100 Walker * walker;
101 Walker *walker;
101 ThreadContext *tc;
102 RequestPtr req;
103 State state;
104 State nextState;
105 int dataSize;
106 bool enableNX;
107 unsigned inflight;
108 TlbEntry entry;
109 PacketPtr read;
110 std::vector<PacketPtr> writes;
111 Fault timingFault;
112 TLB::Translation * translation;
113 BaseTLB::Mode mode;
114 bool functional;
115 bool timing;
116 bool retrying;
117 bool started;
102 ThreadContext *tc;
103 RequestPtr req;
104 State state;
105 State nextState;
106 int dataSize;
107 bool enableNX;
108 unsigned inflight;
109 TlbEntry entry;
110 PacketPtr read;
111 std::vector<PacketPtr> writes;
112 Fault timingFault;
113 TLB::Translation * translation;
114 BaseTLB::Mode mode;
115 bool functional;
116 bool timing;
117 bool retrying;
118 bool started;
118
119 public:
120 WalkerState(Walker * _walker, BaseTLB::Translation *_translation,
121 RequestPtr _req, bool _isFunctional = false) :
122 walker(_walker), req(_req), state(Ready),
123 nextState(Ready), inflight(0),
124 translation(_translation),
125 functional(_isFunctional), timing(false),
126 retrying(false), started(false)

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167 RequestPtr req, BaseTLB::Mode mode);
168 Fault startFunctional(ThreadContext * _tc, Addr &addr,
169 Addr &pageSize, BaseTLB::Mode mode);
170
171 protected:
172 // The TLB we're supposed to load.
173 TLB * tlb;
174 System * sys;
119 public:
120 WalkerState(Walker * _walker, BaseTLB::Translation *_translation,
121 RequestPtr _req, bool _isFunctional = false) :
122 walker(_walker), req(_req), state(Ready),
123 nextState(Ready), inflight(0),
124 translation(_translation),
125 functional(_isFunctional), timing(false),
126 retrying(false), started(false)

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167 RequestPtr req, BaseTLB::Mode mode);
168 Fault startFunctional(ThreadContext * _tc, Addr &addr,
169 Addr &pageSize, BaseTLB::Mode mode);
170
171 protected:
172 // The TLB we're supposed to load.
173 TLB * tlb;
174 System * sys;
175 MasterID masterId;
175
176 // Functions for dealing with packets.
177 bool recvTiming(PacketPtr pkt);
178 void recvRetry();
179 bool sendTiming(WalkerState * sendingState, PacketPtr pkt);
180
181 public:
182
183 void setTLB(TLB * _tlb)
184 {
185 tlb = _tlb;
186 }
187
188 typedef X86PagetableWalkerParams Params;
189
176
177 // Functions for dealing with packets.
178 bool recvTiming(PacketPtr pkt);
179 void recvRetry();
180 bool sendTiming(WalkerState * sendingState, PacketPtr pkt);
181
182 public:
183
184 void setTLB(TLB * _tlb)
185 {
186 tlb = _tlb;
187 }
188
189 typedef X86PagetableWalkerParams Params;
190
191 const Params *
192 params() const
193 {
194 return static_cast<const Params *>(_params);
195 }
196
190 Walker(const Params *params) :
191 MemObject(params), port(name() + ".port", this),
197 Walker(const Params *params) :
198 MemObject(params), port(name() + ".port", this),
192 funcState(this, NULL, NULL, true), tlb(NULL), sys(params->system)
199 funcState(this, NULL, NULL, true), tlb(NULL), sys(params->system),
200 masterId(sys->getMasterId(name()))
193 {
194 }
195 };
196}
197#endif // __ARCH_X86_PAGE_TABLE_WALKER_HH__
201 {
202 }
203 };
204}
205#endif // __ARCH_X86_PAGE_TABLE_WALKER_HH__