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ruby: mesi coherence protocol: remove unused state M_MB

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This commit is contained in:
Nilay Vaish 2013-04-23 00:03:07 -05:00
parent 3295e6de69
commit 95eebf9e5e
1 changed files with 6 additions and 14 deletions
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20
src/mem/protocol/MESI_CMP_directory-L2cache.sm
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@ -72,7 +72,6 @@ machine(L2Cache, "MESI Directory L2 Cache CMP")
// Blocking states
SS_MB, AccessPermission:Busy, desc="Blocked for L1_GETX from SS";
MT_MB, AccessPermission:Busy, desc="Blocked for L1_GETX from MT";
M_MB, AccessPermission:Busy, desc="Blocked for L1_GETX from M";
MT_IIB, AccessPermission:Busy, desc="Blocked for L1_GETS from MT, waiting for unblock and data";
MT_IB, AccessPermission:Busy, desc="Blocked for L1_GETS from MT, got unblock, waiting for data";
@ -817,21 +816,21 @@ machine(L2Cache, "MESI Directory L2 Cache CMP")
// BASE STATE - I
// Transitions from I (Idle)
transition({NP, IS, ISS, IM, SS, M, M_I, I_I, S_I, M_MB, MT_IB, MT_SB}, L1_PUTX) {
transition({NP, IS, ISS, IM, SS, M, M_I, I_I, S_I, MT_IB, MT_SB}, L1_PUTX) {
t_sendWBAck;
jj_popL1RequestQueue;
}
transition({NP, SS, M, MT, M_I, I_I, S_I, IS, ISS, IM, M_MB, MT_IB, MT_SB}, L1_PUTX_old) {
transition({NP, SS, M, MT, M_I, I_I, S_I, IS, ISS, IM, MT_IB, MT_SB}, L1_PUTX_old) {
t_sendWBAck;
jj_popL1RequestQueue;
}
transition({IM, IS, ISS, SS_MB, M_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, {L2_Replacement, L2_Replacement_clean}) {
transition({IM, IS, ISS, SS_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, {L2_Replacement, L2_Replacement_clean}) {
zz_stallAndWaitL1RequestQueue;
}
transition({IM, IS, ISS, SS_MB, M_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, MEM_Inv) {
transition({IM, IS, ISS, SS_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, MEM_Inv) {
zn_recycleResponseNetwork;
}
@ -840,7 +839,7 @@ machine(L2Cache, "MESI Directory L2 Cache CMP")
}
transition({SS_MB, M_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, {L1_GETS, L1_GET_INSTR, L1_GETX, L1_UPGRADE}) {
transition({SS_MB, MT_MB, MT_IIB, MT_IB, MT_SB}, {L1_GETS, L1_GET_INSTR, L1_GETX, L1_UPGRADE}) {
zz_stallAndWaitL1RequestQueue;
}
@ -1040,14 +1039,7 @@ machine(L2Cache, "MESI Directory L2 Cache CMP")
kd_wakeUpDependents;
}
transition(SS_MB, Exclusive_Unblock, MT) {
// update actual directory
mmu_markExclusiveFromUnblock;
k_popUnblockQueue;
kd_wakeUpDependents;
}
transition({M_MB, MT_MB}, Exclusive_Unblock, MT) {
transition({SS_MB,MT_MB}, Exclusive_Unblock, MT) {
// update actual directory
mmu_markExclusiveFromUnblock;
k_popUnblockQueue;