summaryrefslogtreecommitdiff
path: root/src/mem/protocol
diff options
context:
space:
mode:
authorPolina Dudnik <pdudnik@gmail.com>2009-09-11 10:59:35 -0500
committerPolina Dudnik <pdudnik@gmail.com>2009-09-11 10:59:35 -0500
commit7ef3e3b2c20e1355d29005404e91f0577102bcac (patch)
tree2913589086c15918847ac05874a686ce3bcb33b7 /src/mem/protocol
parent353a69eae76f27820a1b0245e06ea6539f80caf2 (diff)
downloadgem5-7ef3e3b2c20e1355d29005404e91f0577102bcac.tar.xz
MI data corruption bug fix
Diffstat (limited to 'src/mem/protocol')
-rw-r--r--src/mem/protocol/MI_example-dir.sm49
1 files changed, 32 insertions, 17 deletions
diff --git a/src/mem/protocol/MI_example-dir.sm b/src/mem/protocol/MI_example-dir.sm
index 9502a40b4..c045419b6 100644
--- a/src/mem/protocol/MI_example-dir.sm
+++ b/src/mem/protocol/MI_example-dir.sm
@@ -21,7 +21,8 @@ machine(Directory, "Directory protocol")
M_DRD, desc="Blocked on an invalidation for a DMA read";
M_DWR, desc="Blocked on an invalidation for a DMA write";
- M_DWRI, desc="Intermediate state M_DWR-->I";
+ M_DWRI, desc="Intermediate state M_DWR-->I";
+ M_DRDI, desc="Intermediate state M_DRD-->I";
IM, desc="Intermediate state I-->M";
MI, desc="Intermediate state M-->I";
@@ -306,11 +307,11 @@ machine(Directory, "Directory protocol")
action(inv_sendCacheInvalidate, "inv", desc="Invalidate a cache block") {
peek(dmaRequestQueue_in, DMARequestMsg) {
enqueue(forwardNetwork_out, RequestMsg, latency=directory_latency) {
- out_msg.Address := address;
- out_msg.Type := CoherenceRequestType:INV;
- out_msg.Requestor := machineID;
- out_msg.Destination := directory[in_msg.PhysicalAddress].Owner;
- out_msg.MessageSize := MessageSizeType:Writeback_Control;
+ out_msg.Address := address;
+ out_msg.Type := CoherenceRequestType:INV;
+ out_msg.Requestor := machineID;
+ out_msg.Destination := directory[in_msg.PhysicalAddress].Owner;
+ out_msg.MessageSize := MessageSizeType:Writeback_Control;
}
}
}
@@ -323,16 +324,15 @@ machine(Directory, "Directory protocol")
dmaRequestQueue_in.dequeue();
}
- action(l_writeDataToMemory, "l", desc="Write PUTX data to memory") {
+ action(l_writeDataToMemory, "pl", desc="Write PUTX data to memory") {
peek(requestQueue_in, RequestMsg) {
// assert(in_msg.Dirty);
// assert(in_msg.MessageSize == MessageSizeType:Writeback_Data);
directory[in_msg.Address].DataBlk := in_msg.DataBlk;
- DEBUG_EXPR(in_msg.Address);
- DEBUG_EXPR(in_msg.DataBlk);
+ //directory[in_msg.Address].DataBlk.copyPartial(in_msg.DataBlk, addressOffset(in_msg.Address), in_msg.Len);
}
}
-
+
action(dwt_writeDMADataFromTBE, "dwt", desc="DMA Write data to memory from TBE") {
directory[address].DataBlk.copyPartial(TBEs[address].DataBlk, addressOffset(TBEs[address].PhysicalAddress), TBEs[address].Len);
}
@@ -416,7 +416,8 @@ machine(Directory, "Directory protocol")
out_msg.Address := address;
out_msg.Type := MemoryRequestType:MEMORY_WB;
out_msg.OriginalRequestorMachId := in_msg.Requestor;
- //out_msg.DataBlk := in_msg.DataBlk;
+ // get incoming data
+ // out_msg.DataBlk := in_msg.DataBlk;
out_msg.DataBlk.copyPartial(TBEs[address].DataBlk, addressOffset(TBEs[address].PhysicalAddress), TBEs[address].Len);
out_msg.MessageSize := in_msg.MessageSize;
//out_msg.Prefetch := in_msg.Prefetch;
@@ -448,23 +449,26 @@ machine(Directory, "Directory protocol")
}
action(w_writeDataToMemoryFromTBE, "\w", desc="Write date to directory memory from TBE") {
- directory[address].DataBlk := TBEs[address].DataBlk;
+ //directory[address].DataBlk := TBEs[address].DataBlk;
+ directory[address].DataBlk.copyPartial(TBEs[address].DataBlk, addressOffset(TBEs[address].PhysicalAddress), TBEs[address].Len);
+
}
// TRANSITIONS
- transition({M_DRD, M_DWR, M_DWRI}, GETX) {
+ transition({M_DRD, M_DWR, M_DWRI, M_DRDI}, GETX) {
z_recycleRequestQueue;
}
transition({IM, MI, ID, ID_W}, {GETX, GETS, PUTX, PUTX_NotOwner} ) {
z_recycleRequestQueue;
}
-
+
transition({IM, MI, ID, ID_W}, {DMA_READ, DMA_WRITE} ) {
y_recycleDMARequestQueue;
}
+
transition(I, GETX, IM) {
//d_sendData;
qf_queueMemoryFetchRequest;
@@ -507,18 +511,27 @@ machine(Directory, "Directory protocol")
}
transition(M, DMA_READ, M_DRD) {
+ v_allocateTBE;
inv_sendCacheInvalidate;
p_popIncomingDMARequestQueue;
}
- transition(M_DRD, PUTX, I) {
+ transition(M_DRD, PUTX, M_DRDI) {
+ l_writeDataToMemory;
drp_sendDMAData;
c_clearOwner;
- a_sendWriteBackAck;
- d_deallocateDirectory;
+ l_queueMemoryWBRequest;
i_popIncomingRequestQueue;
}
+ transition(M_DRDI, Memory_Ack, I) {
+ l_sendWriteBackAck;
+ w_deallocateTBE;
+ d_deallocateDirectory;
+ l_popMemQueue;
+ }
+
+
transition(M, DMA_WRITE, M_DWR) {
v_allocateTBE;
inv_sendCacheInvalidate;
@@ -526,6 +539,7 @@ machine(Directory, "Directory protocol")
}
transition(M_DWR, PUTX, M_DWRI) {
+ l_writeDataToMemory;
qw_queueMemoryWBRequest_partialTBE;
c_clearOwner;
i_popIncomingRequestQueue;
@@ -547,6 +561,7 @@ machine(Directory, "Directory protocol")
}
transition(M, PUTX, MI) {
+ l_writeDataToMemory;
c_clearOwner;
v_allocateTBEFromRequestNet;
l_queueMemoryWBRequest;