request.hh (2641:6d9d837e2032) request.hh (2663:c82193ae8467)
1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 47 unchanged lines hidden (view full) ---

56const unsigned PF_EXCLUSIVE = 0x100;
57/** The request should be marked as LRU. */
58const unsigned EVICT_NEXT = 0x200;
59/** The request should ignore unaligned access faults */
60const unsigned NO_ALIGN_FAULT = 0x400;
61
62class Request
63{
1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 47 unchanged lines hidden (view full) ---

56const unsigned PF_EXCLUSIVE = 0x100;
57/** The request should be marked as LRU. */
58const unsigned EVICT_NEXT = 0x200;
59/** The request should ignore unaligned access faults */
60const unsigned NO_ALIGN_FAULT = 0x400;
61
62class Request
63{
64 //@todo Make Accesor functions, make these private.
65 public:
66 /** Constructor, needs a bool to signify if it is/isn't Cpu Request. */
67 Request(bool isCpu);
68
69 /** reset the request to it's initial state so it can be reused.*/
70 void resetAll(bool isCpu);
71
72 /** reset the request's addrs times, etc, so but not everything to same
73 * time. */
74 void resetMin();
75
76//First non-cpu request fields
77 private:
64 private:
78 /** The physical address of the request. */
65 /**
66 * The physical address of the request. Valid only if validPaddr
67 * is set. */
79 Addr paddr;
68 Addr paddr;
80 /** Wether or not paddr is valid (has been written yet). */
81 bool validPaddr;
82
69
83 /** The size of the request. */
70 /**
71 * The size of the request. This field must be set when vaddr or
72 * paddr is written via setVirt() or setPhys(), so it is always
73 * valid as long as one of the address fields is valid. */
84 int size;
74 int size;
85 /** Wether or not size is valid (has been written yet). */
86 bool validSize;
87
75
88 /** The time this request was started. Used to calculate latencies. */
89 Tick time;
90 /** Wether or not time is valid (has been written yet). */
91 bool validTime;
92
93 /** Destination address if this is a block copy. */
94 Addr copyDest;
95 /** Wether or not copyDest is valid (has been written yet). */
96 bool validCopyDest;
97
98 /** Flag structure for the request. */
99 uint32_t flags;
100
76 /** Flag structure for the request. */
77 uint32_t flags;
78
101//Accsesors for non-cpu request fields
102 public:
103 /** Accesor for paddr. */
104 Addr getPaddr();
105 /** Accesor for paddr. */
106 void setPaddr(Addr _paddr);
79 /**
80 * The time this request was started. Used to calculate
81 * latencies. This field is set to curTick any time paddr or vaddr
82 * is written. */
83 Tick time;
107
84
108 /** Accesor for size. */
109 int getSize();
110 /** Accesor for size. */
111 void setSize(int _size);
112
113 /** Accesor for time. */
114 Tick getTime();
115 /** Accesor for time. */
116 void setTime(Tick _time);
117
118 /** Accesor for copy dest. */
119 Addr getCopyDest();
120 /** Accesor for copy dest. */
121 void setCopyDest(Addr _copyDest);
122
123 /** Accesor for flags. */
124 uint32_t getFlags();
125 /** Accesor for paddr. */
126 void setFlags(uint32_t _flags);
127
128//Now cpu-request fields
129 private:
130 /** Bool to signify if this is a cpuRequest. */
131 bool cpuReq;
132
85 /** The address space ID. */
86 int asid;
133 /** The virtual address of the request. */
134 Addr vaddr;
87 /** The virtual address of the request. */
88 Addr vaddr;
135 /** Wether or not the vaddr is valid. */
136 bool validVaddr;
137
89
138 /** The address space ID. */
139 int asid;
140 /** Wether or not the asid is valid. */
141 bool validAsid;
142
143 /** The return value of store conditional. */
144 uint64_t scResult;
90 /** The return value of store conditional. */
91 uint64_t scResult;
145 /** Wether or not the sc result is valid. */
146 bool validScResult;
147
92
148 /** The cpu number for statistics. */
93 /** The cpu number (for statistics, typically). */
149 int cpuNum;
94 int cpuNum;
150 /** Wether or not the cpu number is valid. */
151 bool validCpuNum;
152
153 /** The requesting thread id. */
95 /** The requesting thread id (for statistics, typically). */
154 int threadNum;
96 int threadNum;
155 /** Wether or not the thread id is valid. */
156 bool validThreadNum;
157
158 /** program counter of initiating access; for tracing/debugging */
159 Addr pc;
97
98 /** program counter of initiating access; for tracing/debugging */
99 Addr pc;
160 /** Wether or not the pc is valid. */
100
101 /** Whether or not paddr is valid (has been written yet). */
102 bool validPaddr;
103 /** Whether or not the asid & vaddr are valid. */
104 bool validAsidVaddr;
105 /** Whether or not the sc result is valid. */
106 bool validScResult;
107 /** Whether or not the cpu number & thread ID are valid. */
108 bool validCpuAndThreadNums;
109 /** Whether or not the pc is valid. */
161 bool validPC;
162
110 bool validPC;
111
163//Accessor Functions for cpu request fields
164 public:
112 public:
165 /** Accesor function to determine if this is a cpu request or not.*/
166 bool isCpuRequest();
113 /** Minimal constructor. No fields are initialized. */
114 Request()
115 : validPaddr(false), validAsidVaddr(false),
116 validScResult(false), validCpuAndThreadNums(false), validPC(false)
117 {}
167
118
168 /** Accesor function for vaddr.*/
169 Addr getVaddr();
170 /** Accesor function for vaddr.*/
171 void setVaddr(Addr _vaddr);
119 /**
120 * Constructor for physical (e.g. device) requests. Initializes
121 * just physical address, size, flags, and timestamp (to curTick).
122 * These fields are adequate to perform a request. */
123 Request(Addr _paddr, int _size, int _flags)
124 : validCpuAndThreadNums(false)
125 { setPhys(_paddr, _size, _flags); }
172
126
173 /** Accesor function for asid.*/
174 int getAsid();
175 /** Accesor function for asid.*/
176 void setAsid(int _asid);
127 /**
128 * Set up CPU and thread numbers. */
129 void setThreadContext(int _cpuNum, int _threadNum)
130 {
131 cpuNum = _cpuNum;
132 threadNum = _threadNum;
133 validCpuAndThreadNums = true;
134 }
177
135
178 /** Accesor function for store conditional return value.*/
179 uint64_t getScResult();
180 /** Accesor function for store conditional return value.*/
181 void setScResult(uint64_t _scResult);
136 /**
137 * Set up a physical (e.g. device) request in a previously
138 * allocated Request object. */
139 void setPhys(Addr _paddr, int _size, int _flags)
140 {
141 paddr = _paddr;
142 size = _size;
143 flags = _flags;
144 time = curTick;
145 validPaddr = true;
146 validAsidVaddr = false;
147 validPC = false;
148 validScResult = false;
149 }
182
150
183 /** Accesor function for cpu number.*/
184 int getCpuNum();
185 /** Accesor function for cpu number.*/
186 void setCpuNum(int _cpuNum);
151 /**
152 * Set up a virtual (e.g., CPU) request in a previously
153 * allocated Request object. */
154 void setVirt(int _asid, Addr _vaddr, int _size, int _flags, Addr _pc)
155 {
156 asid = _asid;
157 vaddr = _vaddr;
158 size = _size;
159 flags = _flags;
160 pc = _pc;
161 time = curTick;
162 validPaddr = false;
163 validAsidVaddr = true;
164 validPC = true;
165 validScResult = false;
166 }
187
167
188 /** Accesor function for thread number.*/
189 int getThreadNum();
190 /** Accesor function for thread number.*/
191 void setThreadNum(int _threadNum);
168 /** Set just the physical address. This should only be used to
169 * record the result of a translation, and thus the vaddr must be
170 * valid before this method is called. Otherwise, use setPhys()
171 * to guarantee that the size and flags are also set.
172 */
173 void setPaddr(Addr _paddr)
174 {
175 assert(validAsidVaddr);
176 paddr = _paddr;
177 validPaddr = true;
178 }
192
179
193 /** Accesor function for pc.*/
194 Addr getPC();
195 /** Accesor function for pc.*/
196 void setPC(Addr _pc);
180 /** Accessor for paddr. */
181 Addr getPaddr() { assert(validPaddr); return paddr; }
197
182
183 /** Accessor for size. */
184 int getSize() { assert(validPaddr || validAsidVaddr); return size; }
185 /** Accessor for time. */
186 Tick getTime() { assert(validPaddr || validAsidVaddr); return time; }
187
188 /** Accessor for flags. */
189 uint32_t getFlags() { assert(validPaddr || validAsidVaddr); return flags; }
190 /** Accessor for paddr. */
191 void setFlags(uint32_t _flags)
192 { assert(validPaddr || validAsidVaddr); flags = _flags; }
193
194 /** Accessor function for vaddr.*/
195 Addr getVaddr() { assert(validAsidVaddr); return vaddr; }
196
197 /** Accessor function for asid.*/
198 int getAsid() { assert(validAsidVaddr); return asid; }
199
200 /** Accessor function for store conditional return value.*/
201 uint64_t getScResult() { assert(validScResult); return scResult; }
202 /** Accessor function for store conditional return value.*/
203 void setScResult(uint64_t _scResult)
204 { scResult = _scResult; validScResult = true; }
205
206 /** Accessor function for cpu number.*/
207 int getCpuNum() { assert(validCpuAndThreadNums); return cpuNum; }
208 /** Accessor function for thread number.*/
209 int getThreadNum() { assert(validCpuAndThreadNums); return threadNum; }
210
211 /** Accessor function for pc.*/
212 Addr getPC() { assert(validPC); return pc; }
213
198 friend class Packet;
199};
200
201#endif // __MEM_REQUEST_HH__
214 friend class Packet;
215};
216
217#endif // __MEM_REQUEST_HH__