diff options
Diffstat (limited to 'src/mem/packet.cc')
| -rw-r--r-- | src/mem/packet.cc | 126 |
1 files changed, 64 insertions, 62 deletions
diff --git a/src/mem/packet.cc b/src/mem/packet.cc index 1e12ccc20..dde6c00d5 100644 --- a/src/mem/packet.cc +++ b/src/mem/packet.cc @@ -41,68 +41,62 @@ #include "base/trace.hh" #include "mem/packet.hh" -static const std::string ReadReqString("ReadReq"); -static const std::string WriteReqString("WriteReq"); -static const std::string WriteReqNoAckString("WriteReqNoAck|Writeback"); -static const std::string ReadRespString("ReadResp"); -static const std::string WriteRespString("WriteResp"); -static const std::string SoftPFReqString("SoftPFReq"); -static const std::string SoftPFRespString("SoftPFResp"); -static const std::string HardPFReqString("HardPFReq"); -static const std::string HardPFRespString("HardPFResp"); -static const std::string InvalidateReqString("InvalidateReq"); -static const std::string WriteInvalidateReqString("WriteInvalidateReq"); -static const std::string WriteInvalidateRespString("WriteInvalidateResp"); -static const std::string UpgradeReqString("UpgradeReq"); -static const std::string ReadExReqString("ReadExReq"); -static const std::string ReadExRespString("ReadExResp"); -static const std::string OtherCmdString("<other>"); - -const std::string & -Packet::cmdString() const +// The one downside to bitsets is that static initializers can get ugly. +#define SET1(a1) (1 << (a1)) +#define SET2(a1, a2) (SET1(a1) | SET1(a2)) +#define SET3(a1, a2, a3) (SET2(a1, a2) | SET1(a3)) +#define SET4(a1, a2, a3, a4) (SET3(a1, a2, a3) | SET1(a4)) +#define SET5(a1, a2, a3, a4, a5) (SET4(a1, a2, a3, a4) | SET1(a5)) +#define SET6(a1, a2, a3, a4, a5, a6) (SET5(a1, a2, a3, a4, a5) | SET1(a6)) + +const MemCmd::CommandInfo +MemCmd::commandInfo[] = { - switch (cmd) { - case ReadReq: return ReadReqString; - case WriteReq: return WriteReqString; - case WriteReqNoAck: return WriteReqNoAckString; - case ReadResp: return ReadRespString; - case WriteResp: return WriteRespString; - case SoftPFReq: return SoftPFReqString; - case SoftPFResp: return SoftPFRespString; - case HardPFReq: return HardPFReqString; - case HardPFResp: return HardPFRespString; - case InvalidateReq: return InvalidateReqString; - case WriteInvalidateReq:return WriteInvalidateReqString; - case WriteInvalidateResp:return WriteInvalidateRespString; - case UpgradeReq: return UpgradeReqString; - case ReadExReq: return ReadExReqString; - case ReadExResp: return ReadExRespString; - default: return OtherCmdString; - } -} + /* InvalidCmd */ + { 0, InvalidCmd, "InvalidCmd" }, + /* ReadReq */ + { SET3(IsRead, IsRequest, NeedsResponse), ReadResp, "ReadReq" }, + /* WriteReq */ + { SET4(IsWrite, IsRequest, NeedsResponse, HasData), + WriteResp, "WriteReq" }, + /* WriteReqNoAck */ + { SET3(IsWrite, IsRequest, HasData), InvalidCmd, "WriteReqNoAck" }, + /* ReadResp */ + { SET3(IsRead, IsResponse, HasData), InvalidCmd, "ReadResp" }, + /* WriteResp */ + { SET2(IsWrite, IsResponse), InvalidCmd, "WriteResp" }, + /* Writeback */ + { SET3(IsWrite, IsRequest, HasData), InvalidCmd, "Writeback" }, + /* SoftPFReq */ + { SET4(IsRead, IsRequest, IsSWPrefetch, NeedsResponse), + SoftPFResp, "SoftPFReq" }, + /* HardPFReq */ + { SET4(IsRead, IsRequest, IsHWPrefetch, NeedsResponse), + HardPFResp, "HardPFReq" }, + /* SoftPFResp */ + { SET4(IsRead, IsResponse, IsSWPrefetch, HasData), + InvalidCmd, "SoftPFResp" }, + /* HardPFResp */ + { SET4(IsRead, IsResponse, IsHWPrefetch, HasData), + InvalidCmd, "HardPFResp" }, + /* InvalidateReq */ + { SET2(IsInvalidate, IsRequest), InvalidCmd, "InvalidateReq" }, + /* WriteInvalidateReq */ + { SET5(IsWrite, IsInvalidate, IsRequest, HasData, NeedsResponse), + WriteInvalidateResp, "WriteInvalidateReq" }, + /* WriteInvalidateResp */ + { SET5(IsWrite, IsInvalidate, IsRequest, NeedsResponse, IsResponse), + InvalidCmd, "WriteInvalidateResp" }, + /* UpgradeReq */ + { SET3(IsInvalidate, IsRequest, IsUpgrade), InvalidCmd, "UpgradeReq" }, + /* ReadExReq */ + { SET4(IsRead, IsInvalidate, IsRequest, NeedsResponse), + ReadExResp, "ReadExReq" }, + /* ReadExResp */ + { SET4(IsRead, IsInvalidate, IsResponse, HasData), + InvalidCmd, "ReadExResp" } +}; -const std::string & -Packet::cmdIdxToString(Packet::Command idx) -{ - switch (idx) { - case ReadReq: return ReadReqString; - case WriteReq: return WriteReqString; - case WriteReqNoAck: return WriteReqNoAckString; - case ReadResp: return ReadRespString; - case WriteResp: return WriteRespString; - case SoftPFReq: return SoftPFReqString; - case SoftPFResp: return SoftPFRespString; - case HardPFReq: return HardPFReqString; - case HardPFResp: return HardPFRespString; - case InvalidateReq: return InvalidateReqString; - case WriteInvalidateReq:return WriteInvalidateReqString; - case WriteInvalidateResp:return WriteInvalidateRespString; - case UpgradeReq: return UpgradeReqString; - case ReadExReq: return ReadExReqString; - case ReadExResp: return ReadExRespString; - default: return OtherCmdString; - } -} /** delete the data pointed to in the data pointer. Ok to call to matter how * data was allocted. */ @@ -149,9 +143,17 @@ fixDelayedResponsePacket(PacketPtr func, PacketPtr timing) bool result; if (timing->isRead() || timing->isWrite()) { - timing->toggleData(); + // Ugly hack to deal with the fact that we queue the requests + // and don't convert them to responses until we issue them on + // the bus. I tried to avoid this by converting packets to + // responses right away, but this breaks during snoops where a + // responder may do the conversion before other caches have + // done the snoop. Would work if we copied the packet instead + // of just hanging on to a pointer. + MemCmd oldCmd = timing->cmd; + timing->cmd = timing->cmd.responseCommand(); result = fixPacket(func, timing); - timing->toggleData(); + timing->cmd = oldCmd; } else { //Don't toggle if it isn't a read/write response |