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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
| 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;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
27 */
28
29/**
30 * @file Decleration of a request, the overall memory request consisting of
31 the parts of the request that are persistent throughout the transaction.
32 */
33
34#ifndef __MEM_REQUEST_HH__
35#define __MEM_REQUEST_HH__
36
37#include "arch/isa_traits.hh"
38
39class Request;
40
41typedef Request* RequestPtr;
42
43/** The request is a Load locked/store conditional. */
44const unsigned LOCKED = 0x001;
45/** The virtual address is also the physical address. */
46const unsigned PHYSICAL = 0x002;
47/** The request is an ALPHA VPTE pal access (hw_ld). */
48const unsigned VPTE = 0x004;
49/** Use the alternate mode bits in ALPHA. */
50const unsigned ALTMODE = 0x008;
51/** The request is to an uncacheable address. */
52const unsigned UNCACHEABLE = 0x010;
53/** The request should not cause a page fault. */
54const unsigned NO_FAULT = 0x020;
55/** The request should be prefetched into the exclusive state. */
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 private:
65 /**
66 * The physical address of the request. Valid only if validPaddr
67 * is set. */
68 Addr paddr;
69
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. */
74 int size;
75
76 /** Flag structure for the request. */
77 uint32_t flags;
78
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;
84
85 /** The address space ID. */
86 int asid;
87 /** The virtual address of the request. */
88 Addr vaddr;
89
90 /** The return value of store conditional. */
91 uint64_t scResult;
92
93 /** The cpu number (for statistics, typically). */
94 int cpuNum;
95 /** The requesting thread id (for statistics, typically). */
96 int threadNum;
97
98 /** program counter of initiating access; for tracing/debugging */
99 Addr pc;
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. */
110 bool validPC;
111
112 public:
113 /** Minimal constructor. No fields are initialized. */
114 Request()
115 : validPaddr(false), validAsidVaddr(false),
116 validScResult(false), validCpuAndThreadNums(false), validPC(false)
117 {}
118
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); }
126
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 }
135
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 }
150
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 }
167
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 }
179
180 /** Accessor for paddr. */
181 Addr getPaddr() { assert(validPaddr); return paddr; }
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
214 friend class Packet;
215};
216
217#endif // __MEM_REQUEST_HH__
| 31 */
32
33/**
34 * @file Decleration of a request, the overall memory request consisting of
35 the parts of the request that are persistent throughout the transaction.
36 */
37
38#ifndef __MEM_REQUEST_HH__
39#define __MEM_REQUEST_HH__
40
41#include "arch/isa_traits.hh"
42
43class Request;
44
45typedef Request* RequestPtr;
46
47/** The request is a Load locked/store conditional. */
48const unsigned LOCKED = 0x001;
49/** The virtual address is also the physical address. */
50const unsigned PHYSICAL = 0x002;
51/** The request is an ALPHA VPTE pal access (hw_ld). */
52const unsigned VPTE = 0x004;
53/** Use the alternate mode bits in ALPHA. */
54const unsigned ALTMODE = 0x008;
55/** The request is to an uncacheable address. */
56const unsigned UNCACHEABLE = 0x010;
57/** The request should not cause a page fault. */
58const unsigned NO_FAULT = 0x020;
59/** The request should be prefetched into the exclusive state. */
60const unsigned PF_EXCLUSIVE = 0x100;
61/** The request should be marked as LRU. */
62const unsigned EVICT_NEXT = 0x200;
63/** The request should ignore unaligned access faults */
64const unsigned NO_ALIGN_FAULT = 0x400;
65
66class Request
67{
68 private:
69 /**
70 * The physical address of the request. Valid only if validPaddr
71 * is set. */
72 Addr paddr;
73
74 /**
75 * The size of the request. This field must be set when vaddr or
76 * paddr is written via setVirt() or setPhys(), so it is always
77 * valid as long as one of the address fields is valid. */
78 int size;
79
80 /** Flag structure for the request. */
81 uint32_t flags;
82
83 /**
84 * The time this request was started. Used to calculate
85 * latencies. This field is set to curTick any time paddr or vaddr
86 * is written. */
87 Tick time;
88
89 /** The address space ID. */
90 int asid;
91 /** The virtual address of the request. */
92 Addr vaddr;
93
94 /** The return value of store conditional. */
95 uint64_t scResult;
96
97 /** The cpu number (for statistics, typically). */
98 int cpuNum;
99 /** The requesting thread id (for statistics, typically). */
100 int threadNum;
101
102 /** program counter of initiating access; for tracing/debugging */
103 Addr pc;
104
105 /** Whether or not paddr is valid (has been written yet). */
106 bool validPaddr;
107 /** Whether or not the asid & vaddr are valid. */
108 bool validAsidVaddr;
109 /** Whether or not the sc result is valid. */
110 bool validScResult;
111 /** Whether or not the cpu number & thread ID are valid. */
112 bool validCpuAndThreadNums;
113 /** Whether or not the pc is valid. */
114 bool validPC;
115
116 public:
117 /** Minimal constructor. No fields are initialized. */
118 Request()
119 : validPaddr(false), validAsidVaddr(false),
120 validScResult(false), validCpuAndThreadNums(false), validPC(false)
121 {}
122
123 /**
124 * Constructor for physical (e.g. device) requests. Initializes
125 * just physical address, size, flags, and timestamp (to curTick).
126 * These fields are adequate to perform a request. */
127 Request(Addr _paddr, int _size, int _flags)
128 : validCpuAndThreadNums(false)
129 { setPhys(_paddr, _size, _flags); }
130
131 /**
132 * Set up CPU and thread numbers. */
133 void setThreadContext(int _cpuNum, int _threadNum)
134 {
135 cpuNum = _cpuNum;
136 threadNum = _threadNum;
137 validCpuAndThreadNums = true;
138 }
139
140 /**
141 * Set up a physical (e.g. device) request in a previously
142 * allocated Request object. */
143 void setPhys(Addr _paddr, int _size, int _flags)
144 {
145 paddr = _paddr;
146 size = _size;
147 flags = _flags;
148 time = curTick;
149 validPaddr = true;
150 validAsidVaddr = false;
151 validPC = false;
152 validScResult = false;
153 }
154
155 /**
156 * Set up a virtual (e.g., CPU) request in a previously
157 * allocated Request object. */
158 void setVirt(int _asid, Addr _vaddr, int _size, int _flags, Addr _pc)
159 {
160 asid = _asid;
161 vaddr = _vaddr;
162 size = _size;
163 flags = _flags;
164 pc = _pc;
165 time = curTick;
166 validPaddr = false;
167 validAsidVaddr = true;
168 validPC = true;
169 validScResult = false;
170 }
171
172 /** Set just the physical address. This should only be used to
173 * record the result of a translation, and thus the vaddr must be
174 * valid before this method is called. Otherwise, use setPhys()
175 * to guarantee that the size and flags are also set.
176 */
177 void setPaddr(Addr _paddr)
178 {
179 assert(validAsidVaddr);
180 paddr = _paddr;
181 validPaddr = true;
182 }
183
184 /** Accessor for paddr. */
185 Addr getPaddr() { assert(validPaddr); return paddr; }
186
187 /** Accessor for size. */
188 int getSize() { assert(validPaddr || validAsidVaddr); return size; }
189 /** Accessor for time. */
190 Tick getTime() { assert(validPaddr || validAsidVaddr); return time; }
191
192 /** Accessor for flags. */
193 uint32_t getFlags() { assert(validPaddr || validAsidVaddr); return flags; }
194 /** Accessor for paddr. */
195 void setFlags(uint32_t _flags)
196 { assert(validPaddr || validAsidVaddr); flags = _flags; }
197
198 /** Accessor function for vaddr.*/
199 Addr getVaddr() { assert(validAsidVaddr); return vaddr; }
200
201 /** Accessor function for asid.*/
202 int getAsid() { assert(validAsidVaddr); return asid; }
203
204 /** Accessor function for store conditional return value.*/
205 uint64_t getScResult() { assert(validScResult); return scResult; }
206 /** Accessor function for store conditional return value.*/
207 void setScResult(uint64_t _scResult)
208 { scResult = _scResult; validScResult = true; }
209
210 /** Accessor function for cpu number.*/
211 int getCpuNum() { assert(validCpuAndThreadNums); return cpuNum; }
212 /** Accessor function for thread number.*/
213 int getThreadNum() { assert(validCpuAndThreadNums); return threadNum; }
214
215 /** Accessor function for pc.*/
216 Addr getPC() { assert(validPC); return pc; }
217
218 friend class Packet;
219};
220
221#endif // __MEM_REQUEST_HH__
|