packet.cc (2632:1bb2f91485ea) packet.cc (2641:6d9d837e2032)
1/*
2 * Copyright (c) 2006 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;

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29/**
30 * @file
31 * Definition of the Packet Class, a packet is a transaction occuring
32 * between a single level of the memory heirarchy (ie L1->L2).
33 */
34#include "base/misc.hh"
35#include "mem/packet.hh"
36
1/*
2 * Copyright (c) 2006 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;

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

29/**
30 * @file
31 * Definition of the Packet Class, a packet is a transaction occuring
32 * between a single level of the memory heirarchy (ie L1->L2).
33 */
34#include "base/misc.hh"
35#include "mem/packet.hh"
36
37static const std::string ReadReqString("ReadReq");
38static const std::string WriteReqString("WriteReq");
39static const std::string WriteReqNoAckString("WriteReqNoAck");
40static const std::string ReadRespString("ReadResp");
41static const std::string WriteRespString("WriteResp");
42static const std::string OtherCmdString("<other>");
37
43
44const std::string &
45Packet::cmdString() const
46{
47 switch (cmd) {
48 case ReadReq: return ReadReqString;
49 case WriteReq: return WriteReqString;
50 case WriteReqNoAck: return WriteReqNoAckString;
51 case ReadResp: return ReadRespString;
52 case WriteResp: return WriteRespString;
53 default: return OtherCmdString;
54 }
55}
56
38/** delete the data pointed to in the data pointer. Ok to call to matter how
39 * data was allocted. */
40void
57/** delete the data pointed to in the data pointer. Ok to call to matter how
58 * data was allocted. */
59void
41Packet::deleteData() {
60Packet::deleteData()
61{
42 assert(staticData || dynamicData);
43 if (staticData)
44 return;
45
46 if (arrayData)
47 delete [] data;
48 else
49 delete data;
50}
51
52/** If there isn't data in the packet, allocate some. */
53void
62 assert(staticData || dynamicData);
63 if (staticData)
64 return;
65
66 if (arrayData)
67 delete [] data;
68 else
69 delete data;
70}
71
72/** If there isn't data in the packet, allocate some. */
73void
54Packet::allocate() {
74Packet::allocate()
75{
55 if (data)
56 return;
57 assert(!staticData);
58 dynamicData = true;
59 arrayData = true;
76 if (data)
77 return;
78 assert(!staticData);
79 dynamicData = true;
80 arrayData = true;
60 data = new uint8_t[size];
81 data = new uint8_t[getSize()];
61}
62
63/** Do the packet modify the same addresses. */
64bool
82}
83
84/** Do the packet modify the same addresses. */
85bool
65Packet::intersect(Packet *p) {
66 Addr s1 = addr;
67 Addr e1 = addr + size;
68 Addr s2 = p->addr;
69 Addr e2 = p->addr + p->size;
86Packet::intersect(Packet *p)
87{
88 Addr s1 = getAddr();
89 Addr e1 = getAddr() + getSize();
90 Addr s2 = p->getAddr();
91 Addr e2 = p->getAddr() + p->getSize();
70
71 if (s1 >= s2 && s1 < e2)
72 return true;
73 if (e1 >= s2 && e1 < e2)
74 return true;
75 return false;
76}
77
78/** Minimally reset a packet so something like simple cpu can reuse it. */
79void
92
93 if (s1 >= s2 && s1 < e2)
94 return true;
95 if (e1 >= s2 && e1 < e2)
96 return true;
97 return false;
98}
99
100/** Minimally reset a packet so something like simple cpu can reuse it. */
101void
80Packet::reset() {
102Packet::reset()
103{
81 result = Unknown;
82 if (dynamicData) {
83 deleteData();
84 dynamicData = false;
85 arrayData = false;
86 time = curTick;
87 }
88}
89
90
104 result = Unknown;
105 if (dynamicData) {
106 deleteData();
107 dynamicData = false;
108 arrayData = false;
109 time = curTick;
110 }
111}
112
113
91
92
93bool fixPacket(Packet *func, Packet *timing)
94{ panic("Need to implement!"); }
114bool
115fixPacket(Packet *func, Packet *timing)
116{
117 panic("Need to implement!");
118}