packet.hh (3349:fec4a86fa212) packet.hh (3366:922d6f4dfa97)
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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46#include "sim/root.hh"
47
48struct Packet;
49typedef Packet *PacketPtr;
50typedef uint8_t* PacketDataPtr;
51typedef std::list<PacketPtr> PacketList;
52
53//Coherence Flags
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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46#include "sim/root.hh"
47
48struct Packet;
49typedef Packet *PacketPtr;
50typedef uint8_t* PacketDataPtr;
51typedef std::list<PacketPtr> PacketList;
52
53//Coherence Flags
54#define NACKED_LINE 1 << 0
55#define SATISFIED 1 << 1
56#define SHARED_LINE 1 << 2
57#define CACHE_LINE_FILL 1 << 3
58#define COMPRESSED 1 << 4
59#define NO_ALLOCATE 1 << 5
60#define SNOOP_COMMIT 1 << 6
54#define NACKED_LINE (1 << 0)
55#define SATISFIED (1 << 1)
56#define SHARED_LINE (1 << 2)
57#define CACHE_LINE_FILL (1 << 3)
58#define COMPRESSED (1 << 4)
59#define NO_ALLOCATE (1 << 5)
60#define SNOOP_COMMIT (1 << 6)
61
62//for now. @todo fix later
61
62//for now. @todo fix later
63#define NUM_MEM_CMDS 1 << 11
63#define NUM_MEM_CMDS (1 << 11)
64/**
65 * A Packet is used to encapsulate a transfer between two objects in
66 * the memory system (e.g., the L1 and L2 cache). (In contrast, a
67 * single Request travels all the way from the requester to the
68 * ultimate destination and back, possibly being conveyed by several
69 * different Packets along the way.)
70 */
71class Packet

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167 SenderState *senderState;
168
169 private:
170 /** List of command attributes. */
171 // If you add a new CommandAttribute, make sure to increase NUM_MEM_CMDS
172 // as well.
173 enum CommandAttribute
174 {
64/**
65 * A Packet is used to encapsulate a transfer between two objects in
66 * the memory system (e.g., the L1 and L2 cache). (In contrast, a
67 * single Request travels all the way from the requester to the
68 * ultimate destination and back, possibly being conveyed by several
69 * different Packets along the way.)
70 */
71class Packet

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167 SenderState *senderState;
168
169 private:
170 /** List of command attributes. */
171 // If you add a new CommandAttribute, make sure to increase NUM_MEM_CMDS
172 // as well.
173 enum CommandAttribute
174 {
175 IsRead = 1 << 0,
176 IsWrite = 1 << 1,
177 IsPrefetch = 1 << 2,
178 IsInvalidate = 1 << 3,
179 IsRequest = 1 << 4,
180 IsResponse = 1 << 5,
181 NeedsResponse = 1 << 6,
175 IsRead = 1 << 0,
176 IsWrite = 1 << 1,
177 IsPrefetch = 1 << 2,
178 IsInvalidate = 1 << 3,
179 IsRequest = 1 << 4,
180 IsResponse = 1 << 5,
181 NeedsResponse = 1 << 6,
182 IsSWPrefetch = 1 << 7,
183 IsHWPrefetch = 1 << 8,
184 IsUpgrade = 1 << 9,
182 IsSWPrefetch = 1 << 7,
183 IsHWPrefetch = 1 << 8,
184 IsUpgrade = 1 << 9,
185 HasData = 1 << 10
185 HasData = 1 << 10
186 };
187
188 public:
189 /** List of all commands associated with a packet. */
190 enum Command
191 {
192 InvalidCmd = 0,
186 };
187
188 public:
189 /** List of all commands associated with a packet. */
190 enum Command
191 {
192 InvalidCmd = 0,
193 ReadReq = IsRead | IsRequest | NeedsResponse,
193 ReadReq = IsRead | IsRequest | NeedsResponse,
194 WriteReq = IsWrite | IsRequest | NeedsResponse | HasData,
194 WriteReq = IsWrite | IsRequest | NeedsResponse | HasData,
195 WriteReqNoAck = IsWrite | IsRequest | HasData,
195 WriteReqNoAck = IsWrite | IsRequest | HasData,
196 ReadResp = IsRead | IsResponse | NeedsResponse | HasData,
196 ReadResp = IsRead | IsResponse | NeedsResponse | HasData,
197 WriteResp = IsWrite | IsResponse | NeedsResponse,
197 WriteResp = IsWrite | IsResponse | NeedsResponse,
198 Writeback = IsWrite | IsRequest | HasData,
199 SoftPFReq = IsRead | IsRequest | IsSWPrefetch | NeedsResponse,
200 HardPFReq = IsRead | IsRequest | IsHWPrefetch | NeedsResponse,
201 SoftPFResp = IsRead | IsResponse | IsSWPrefetch
198 Writeback = IsWrite | IsRequest | HasData,
199 SoftPFReq = IsRead | IsRequest | IsSWPrefetch | NeedsResponse,
200 HardPFReq = IsRead | IsRequest | IsHWPrefetch | NeedsResponse,
201 SoftPFResp = IsRead | IsResponse | IsSWPrefetch
202 | NeedsResponse | HasData,
202 | NeedsResponse | HasData,
203 HardPFResp = IsRead | IsResponse | IsHWPrefetch
203 HardPFResp = IsRead | IsResponse | IsHWPrefetch
204 | NeedsResponse | HasData,
204 | NeedsResponse | HasData,
205 InvalidateReq = IsInvalidate | IsRequest,
205 InvalidateReq = IsInvalidate | IsRequest,
206 WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest
207 | HasData | NeedsResponse,
208 WriteInvalidateResp = IsWrite | IsInvalidate | IsRequest | NeedsResponse
209 | IsResponse,
206 WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest
207 | HasData | NeedsResponse,
208 WriteInvalidateResp = IsWrite | IsInvalidate | IsRequest
209 | NeedsResponse | IsResponse,
210 UpgradeReq = IsInvalidate | IsRequest | IsUpgrade,
211 ReadExReq = IsRead | IsInvalidate | IsRequest | NeedsResponse,
212 ReadExResp = IsRead | IsInvalidate | IsResponse
210 UpgradeReq = IsInvalidate | IsRequest | IsUpgrade,
211 ReadExReq = IsRead | IsInvalidate | IsRequest | NeedsResponse,
212 ReadExResp = IsRead | IsInvalidate | IsResponse
213 | NeedsResponse | HasData
213 | NeedsResponse | HasData
214 };
215
216 /** Return the string name of the cmd field (for debugging and
217 * tracing). */
218 const std::string &cmdString() const;
219
220 /** Reutrn the string to a cmd given by idx. */
221 const std::string &cmdIdxToString(Command idx);

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215
216 /** Return the string name of the cmd field (for debugging and
217 * tracing). */
218 const std::string &cmdString() const;
219
220 /** Reutrn the string to a cmd given by idx. */
221 const std::string &cmdIdxToString(Command idx);

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