Packet Command Attributes

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Each packet contains a command, which consists of an a set of attributes. The following table indicates per command type, the type of response required (or InvalidCmd if none), and a set of flags. The contents of this table is based on src/mem/packet.hh (containing all command types) and src/mem/packet.cc (defining attributes per command type).

Command response IsRead IsWrite IsUpgrade IsInvalidate NeedsExclusive IsRequest IsResponse NeedsResponse IsSWPrefetch IsHWPrefetch IsLlsc HasData IsError IsPrint IsFlush
InvalidCmd InvalidCmd
ReadReq ReadResp IsRead IsRequest NeedsResponse
ReadResp InvalidCmd IsRead IsResponse HasData
ReadRespWithInvalidate InvalidCmd IsRead IsInvalidate IsResponse HasData
WriteReq WriteResp IsWrite NeedsExclusive IsRequest NeedsResponse HasData
WriteResp InvalidCmd IsWrite NeedsExclusive IsResponse
Writeback InvalidCmd IsWrite NeedsExclusive IsRequest HasData
SoftPFReq SoftPFResp IsRead IsRequest NeedsResponse IsSWPrefetch
HardPFReq HardPFResp IsRead IsRequest NeedsResponse IsHWPrefetch
SoftPFResp InvalidCmd IsRead IsResponse IsSWPrefetch HasData
HardPFResp InvalidCmd IsRead IsResponse IsHWPrefetch HasData
UpgradeReq UpgradeResp IsUpgrade IsInvalidate NeedsExclusive IsRequest NeedsResponse
SCUpgradeReq UpgradeResp IsUpgrade IsInvalidate NeedsExclusive IsRequest NeedsResponse IsLlsc
UpgradeResp InvalidCmd IsUpgrade NeedsExclusive IsResponse
SCUpgradeFailReq UpgradeFailResp IsInvalidate NeedsExclusive IsRequest NeedsResponse IsLlsc
UpgradeFailResp InvalidCmd NeedsExclusive IsResponse
ReadExReq ReadExResp IsRead IsInvalidate NeedsExclusive IsRequest NeedsResponse
ReadExResp InvalidCmd IsRead NeedsExclusive IsResponse HasData
LoadLockedReq ReadResp IsRead IsRequest NeedsResponse IsLlsc
StoreCondReq StoreCondResp IsWrite NeedsExclusive IsRequest NeedsResponse IsLlsc HasData
StoreCondFailReq StoreCondResp IsWrite NeedsExclusive IsRequest NeedsResponse IsLlsc HasData
StoreCondResp InvalidCmd IsWrite NeedsExclusive IsResponse IsLlsc
SwapReq SwapResp IsRead IsWrite NeedsExclusive IsRequest NeedsResponse HasData
SwapResp InvalidCmd IsRead IsWrite NeedsExclusive IsResponse HasData
IntReq MessageResp IsWrite IsRequest NeedsResponse HasData
IntResp InvalidCmd IsWrite IsResponse
NetworkNackError InvalidCmd IsResponse IsError
InvalidDestError InvalidCmd IsResponse IsError
BadAddressError InvalidCmd IsResponse IsError
FunctionalReadError InvalidCmd IsRead IsResponse IsError
FunctionalWriteError InvalidCmd IsWrite IsResponse IsError
PrintReq InvalidCmd IsRequest IsPrint
Flush Request InvalidCmd NeedsExclusive IsRequest IsFlush
Invalidation Request InvalidCmd IsInvalidate NeedsExclusive IsRequest