Uncore Manual

Reference Number: 329468-002 193
Uncore Performance Monitoring
Packet Matching Reference
NcP2PB 1110 NCB Ui,Uoi Peer-to-peer transaction between I/O entities (non-
coherent bypass channel)
NcP2PS 1101 NCS Peer-to-peer transaction between I/O entities. (Non-
coherent standard channel)
NcRd 0000 NCS Co Read from non-coherent memory mapped I/O space
NcRdPtl 0100 NCS Co Partial read from non-coherent memory mapped I/O
space
NcWr 0000 NCB Co Write to non-coherent memory mapped I/O space
NcWrPtl 1100 NCB Co Partial write to non-coherent memory mapped I/O
space
NonSnpRd 0011 HOM0 Co,Hi Non-Snoop (uncached) read
NonSnpWr 0111 HOM0 Co,Hi Non-Snoop (uncached) write
NonSnpWrData 0111 DRS Co,Hi,
Ho
Non cache coherent write data
NonSnpWrDataPtl 1011 DRS Co,Hi,
Ho
Partial (byte-masked) non cache coherent write data
PrefetchHint 1111 SNP Ci,Co Snoop Prefetch Hint
RspCnflt 0100 HOM1 Co,Hi,
Ho
Peer is left with line in I or S state, and the peer has
a conflicting outstanding request.
RspCnfltOwn 0110 HOM1 Peer has a buried M copy for this line with an
outstanding conflicting request.
RspCnfltWbI 0111 HOM1 Hi,Ho Peer has a buried M copy for this line with an
outstanding conflicting request. Peer must write back
data to home, invalidate line and mark itself that
buried HitM data was sent.
RdCode 0001 HOM0 Co,Hi Read cache line in F (or S, if the F state not
supported)
RdCur 0000 HOM0 Co,Hi Request a cache line in I. Typically issued by I/O
proxy entities, RdCur is used to obtain a coherent
snapshot of an uncached line.
RdData 0010 HOM0 Co,Hi Read cache line in either E or F (or S, if F state not
supported). The choice between F (or S) and E is
determined by whether or not per caching agent has
cache line in S state.
RdDataMigratory 1010 HOM0 Co,Hi Same as RdData, except that peer cache can forward
requested cache line in M state without any
writeback to memory.
RdInvOwn 0100 HOM0 Co,Hi Read Invalidate Own requests a cache line in M or E
state. M or E is determined by whether requester is
forwarded an M copy by a peer caching agent or sent
an E copy by home agent.
RspFwd 1000 HOM1 Co,Hi,
Ho
Peer has sent data to requestor with no change in
cache state
RspFwdI 1001 HOM1 Co,Hi,
Ho
Peer has sent data to requestor and is left with line
in I state
RspFwdIWb 1011 HOM1 Hi,Ho Peer has sent data to requestor and a WbIData to
the home, and is left with line in I state
RspFwdS 1010 HOM1 Co,Hi,
Ho
Peer has sent data to requestor and is left with line
in S state
RspFwdSWb 1100 HOM1 Hi,Ho Peer has sent data to requestor and a WbSData to
the home, and is left with line in S state
RspI 0000 HOM1 Co,Hi,
Ho
Peer left with line in I-state
Name Opc MC
Gen
By?
Desc