diff options
Diffstat (limited to 'src/mem/packet.hh')
| -rw-r--r-- | src/mem/packet.hh | 113 |
1 files changed, 110 insertions, 3 deletions
diff --git a/src/mem/packet.hh b/src/mem/packet.hh index 0f45a7bae..1e012e710 100644 --- a/src/mem/packet.hh +++ b/src/mem/packet.hh @@ -133,6 +133,15 @@ class MemCmd FlushReq, //request for a cache flush InvalidateReq, // request for address to be invalidated InvalidateResp, + /* [InvisiSpec] New commands */ + ReadSpecReq, + ReadSpecResp, + ValidateReq, + ValidateResp, + ExposeReq, + ExposeResp, + SpecFlushReq, + SpecFlushResp, NUM_MEM_CMDS }; @@ -160,6 +169,11 @@ class MemCmd IsPrint, //!< Print state matching address (for debugging) IsFlush, //!< Flush the address from caches FromCache, //!< Request originated from a caching agent + /* [InvisiSpec] New attributes */ + IsSpec, //!< Speculatively issued + IsValidate, + IsExpose, + IsSpecFlush, NUM_COMMAND_ATTRIBUTES }; @@ -226,6 +240,12 @@ class MemCmd bool isPrint() const { return testCmdAttrib(IsPrint); } bool isFlush() const { return testCmdAttrib(IsFlush); } + /// [InvisiSpec] InvisiSpec attributes + bool isSpec() const { return testCmdAttrib(IsSpec); } + bool isValidate() const { return testCmdAttrib(IsValidate); } + bool isExpose() const { return testCmdAttrib(IsExpose); } + bool isSpecFlush() const { return testCmdAttrib(IsSpecFlush); } + Command responseCommand() const { @@ -306,7 +326,17 @@ class Packet : public Printable // Signal block present to squash prefetch and cache evict packets // through express snoop flag - BLOCK_CACHED = 0x00010000 + BLOCK_CACHED = 0x00010000, + + // [InvisiSpec] ReadSpecReq was L1 hit. + L1_HIT = 0x00020000, + + // [InvisiSpec] this packet is the first one of split packets + // maximum split is 2 + FIRST_IN_SPLIT = 0x00040000, + ONLY_ACCESS_SPEC_BUFF = 0x00080000, + + EXTERNAL_EVICTION = 0x00100000, }; Flags flags; @@ -379,6 +409,12 @@ class Packet : public Printable */ uint32_t payloadDelay; + //[InvisiSpec] indicate the source buffer entry + //if the load should get data from specbuffer + int srcIdx; + int reqIdx; + bool isSplit; + /** * A virtual base opaque structure used to hold state associated * with the packet (e.g., an MSHR), specific to a MemObject that @@ -552,6 +588,45 @@ class Packet : public Printable bool isPrint() const { return cmd.isPrint(); } bool isFlush() const { return cmd.isFlush(); } + /// [InvisiSpec] InvisiSpec flags + bool isSpec() const { return cmd.isSpec(); } + bool isValidate() const { return cmd.isValidate(); } + bool isExpose() const { return cmd.isExpose(); } + bool isSpecFlush() const { return cmd.isSpecFlush(); } + bool isL1Hit() const { return flags.isSet(L1_HIT); } + bool isExternalEviction() const { return flags.isSet(EXTERNAL_EVICTION); } + // [InvisiSpec] Check whether it is the first in split packets + bool isFirst() const { return flags.isSet(FIRST_IN_SPLIT); } + bool onlyAccessSpecBuff() const + { return flags.isSet(ONLY_ACCESS_SPEC_BUFF); } + + void setL1Hit() + { + assert(isSpec()); + assert(!flags.isSet(L1_HIT)); + flags.set(L1_HIT); + } + + void setExternalEviction() + { + assert(!flags.isSet(EXTERNAL_EVICTION)); + flags.set(EXTERNAL_EVICTION); + } + + void setOnlyAccessSpecBuff() + { + assert(isSpec()); + assert(!flags.isSet(ONLY_ACCESS_SPEC_BUFF)); + flags.set(ONLY_ACCESS_SPEC_BUFF); + } + + void setFirst() + { + //assert(isSpec()); + assert(!flags.isSet(FIRST_IN_SPLIT)); + flags.set(FIRST_IN_SPLIT); + } + //@{ /// Snoop flags /** @@ -771,7 +846,8 @@ class Packet : public Printable : cmd(_cmd), id((PacketId)_req.get()), req(_req), data(nullptr), addr(0), _isSecure(false), size(0), _qosValue(0), headerDelay(0), snoopDelay(0), - payloadDelay(0), senderState(NULL) + payloadDelay(0), srcIdx(-1), reqIdx(-1), isSplit(false), + senderState(NULL) { if (req->hasPaddr()) { addr = req->getPaddr(); @@ -793,7 +869,8 @@ class Packet : public Printable : cmd(_cmd), id(_id ? _id : (PacketId)_req.get()), req(_req), data(nullptr), addr(0), _isSecure(false), _qosValue(0), headerDelay(0), - snoopDelay(0), payloadDelay(0), senderState(NULL) + snoopDelay(0), payloadDelay(0), srcIdx(-1), reqIdx(-1), isSplit(false), + senderState(NULL) { if (req->hasPaddr()) { addr = req->getPaddr() & ~(_blkSize - 1); @@ -820,6 +897,9 @@ class Packet : public Printable headerDelay(pkt->headerDelay), snoopDelay(0), payloadDelay(pkt->payloadDelay), + srcIdx(pkt->srcIdx), + reqIdx(pkt->reqIdx), + isSplit(pkt->isSplit), senderState(pkt->senderState) { if (!clear_flags) @@ -894,6 +974,33 @@ class Packet : public Printable } /** + * [InvisiSpec] Methods that return Packets for InvisiSpec. + */ + static PacketPtr + createReadSpec(const RequestPtr req) + { + return new Packet(req, MemCmd::ReadSpecReq); + } + + static PacketPtr + createValidate(const RequestPtr req) + { + return new Packet(req, MemCmd::ValidateReq); + } + + static PacketPtr + createExpose(const RequestPtr req) + { + return new Packet(req, MemCmd::ExposeReq); + } + + static PacketPtr + createSpecFlush(const RequestPtr req) + { + return new Packet(req, MemCmd::SpecFlushReq); + } + + /** * clean up packet variables */ ~Packet() |