| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: FNXPCIEXactorReplayMonitor.vr |
| 4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 6 | // |
| 7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 8 | // |
| 9 | // This program is free software; you can redistribute it and/or modify |
| 10 | // it under the terms of the GNU General Public License as published by |
| 11 | // the Free Software Foundation; version 2 of the License. |
| 12 | // |
| 13 | // This program is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | // GNU General Public License for more details. |
| 17 | // |
| 18 | // You should have received a copy of the GNU General Public License |
| 19 | // along with this program; if not, write to the Free Software |
| 20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | // |
| 22 | // For the avoidance of doubt, and except that if any non-GPL license |
| 23 | // choice is available it will apply instead, Sun elects to use only |
| 24 | // the General Public License version 2 (GPLv2) at this time for any |
| 25 | // software where a choice of GPL license versions is made |
| 26 | // available with the language indicating that GPLv2 or any later version |
| 27 | // may be used, or where a choice of which version of the GPL is applied is |
| 28 | // otherwise unspecified. |
| 29 | // |
| 30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 31 | // CA 95054 USA or visit www.sun.com if you need additional information or |
| 32 | // have any questions. |
| 33 | // |
| 34 | // ========== Copyright Header End ============================================ |
| 35 | #include "DenaliPCIE.vri" |
| 36 | |
| 37 | // FNXPCIEXactor library |
| 38 | #include "FNXPCIEXactorDefines.vri" |
| 39 | |
| 40 | // report library |
| 41 | #include "cReport.vrh" |
| 42 | #include "FNXPCIEXactorReportMacros.vri" |
| 43 | |
| 44 | class FNXPCIEXactorReplayMonitor { |
| 45 | |
| 46 | // Base Class and Method Names For QR Macros |
| 47 | local string ClassName = "FNXPCIEXactorReplayMonitor"; |
| 48 | local string MethodName = null; |
| 49 | |
| 50 | local ReportClass MyReport; |
| 51 | local string XactorName; |
| 52 | local FNXPCIEXactorUtilities Util; |
| 53 | local integer PortNum; |
| 54 | |
| 55 | integer StartNextPurgeSeqNum; |
| 56 | |
| 57 | // Replay Buffer Contents |
| 58 | local FNXPCIEXactorPacket ReplayBuffer[ FNX_PCIE_XTR_MAX_REPLAY_ENTRIES ]; |
| 59 | |
| 60 | // Replay Statistics Tracking |
| 61 | local integer TotalNumReplays; |
| 62 | local integer TotalBytesReplayed; |
| 63 | local integer PktCntPerTimesReplayed[FNX_PCIE_XTR_MAX_NUM_RETRIES_PER_PKT]; |
| 64 | local integer NumUnpurgedTLPs; |
| 65 | |
| 66 | local integer CurrReplayCnt; // Count of Ongoing Replay (0 == Not Replaying) |
| 67 | |
| 68 | // constructor |
| 69 | task new( ReportClass _Report, |
| 70 | string _XactorName, |
| 71 | FNXPCIEXactorUtilities _Util, |
| 72 | integer _PortNum ); |
| 73 | |
| 74 | // public methods |
| 75 | task Reset(); |
| 76 | task UpdateTlp( FNXPCIEXactorPacket tlpPkt ); |
| 77 | function string GetStr(); |
| 78 | task UpdateStats(); |
| 79 | } |
| 80 | |
| 81 | task FNXPCIEXactorReplayMonitor::new( ReportClass _Report, |
| 82 | string _XactorName, |
| 83 | FNXPCIEXactorUtilities _Util, |
| 84 | integer _PortNum ) |
| 85 | { |
| 86 | string MethodName = "new"; |
| 87 | |
| 88 | MyReport = _Report; |
| 89 | XactorName = _XactorName; |
| 90 | Util = _Util; |
| 91 | PortNum = _PortNum; |
| 92 | Reset(); |
| 93 | } |
| 94 | |
| 95 | task FNXPCIEXactorReplayMonitor::Reset() |
| 96 | { |
| 97 | string MethodName = "Reset"; |
| 98 | integer i; |
| 99 | |
| 100 | NumUnpurgedTLPs = 0; |
| 101 | StartNextPurgeSeqNum = -1; |
| 102 | |
| 103 | for (i=0; i < FNX_PCIE_XTR_MAX_REPLAY_ENTRIES; i++) |
| 104 | ReplayBuffer[i] = null; |
| 105 | TotalNumReplays = 0; |
| 106 | TotalBytesReplayed = 0; |
| 107 | for (i=0; i < FNX_PCIE_XTR_MAX_NUM_RETRIES_PER_PKT; i++) |
| 108 | PktCntPerTimesReplayed[i] = 0; |
| 109 | CurrReplayCnt = 0; |
| 110 | } |
| 111 | |
| 112 | task FNXPCIEXactorReplayMonitor::UpdateTlp( FNXPCIEXactorPacket tlpPkt ) |
| 113 | { |
| 114 | string MethodName = "UpdateTlp"; |
| 115 | bit [FNX_PCIE_XTR_DLL_FRM_SEQ_NUM_WIDTH-1:0] seqNum; |
| 116 | bit [FNX_PCIE_XTR_DLL_FRM_SEQ_NUM_WIDTH-1:0] endSeqNum, iSeqNum; |
| 117 | |
| 118 | seqNum = tlpPkt.DLLFrmSeqNum; |
| 119 | |
| 120 | // Packet Has Been Replayed |
| 121 | if (ReplayBuffer[seqNum] !== null) { |
| 122 | |
| 123 | // Ensure Packet Contents Match Previously Transmitted Packet |
| 124 | if (ReplayBuffer[seqNum].PktCompare( "===", tlpPkt )) { |
| 125 | PCIEX_QR_I( "%s -> Received Replay TLP Match for SeqNum=%h", XactorName, seqNum ); |
| 126 | |
| 127 | // Update Replay Statistics on Replay Match |
| 128 | ReplayBuffer[seqNum].ReplayCnt++; |
| 129 | if (CurrReplayCnt !== ReplayBuffer[seqNum].ReplayCnt) { |
| 130 | TotalNumReplays++; |
| 131 | CurrReplayCnt = ReplayBuffer[seqNum].ReplayCnt; |
| 132 | } |
| 133 | TotalBytesReplayed += ReplayBuffer[seqNum].NumBytes(); |
| 134 | } |
| 135 | else { |
| 136 | PCIEX_QR_ERR( "%s -> Received Replay TLP Mismatch.\n Original TLP Contents:\n%s\n Replayed TLP Contents:\n%s", |
| 137 | XactorName, ReplayBuffer[seqNum].PktToStr(), tlpPkt.PktToStr() ); |
| 138 | } |
| 139 | } |
| 140 | else { // Packet Is Newly Transmitted So Place in Replay Buffer |
| 141 | ReplayBuffer[seqNum] = new( MyReport, XactorName, Util, PortNum ); |
| 142 | ReplayBuffer[seqNum].PktCopy( tlpPkt ); |
| 143 | |
| 144 | // Increment Number of TLPs Not Purged From Replay Buffer |
| 145 | NumUnpurgedTLPs++; |
| 146 | |
| 147 | // Initialize Sequence Number to Start First Purge At |
| 148 | if (StartNextPurgeSeqNum < 0) |
| 149 | StartNextPurgeSeqNum = seqNum; |
| 150 | |
| 151 | // Once 512 TLPs are in Replay Buffer, Purge 256 Oldest TLPs |
| 152 | if (NumUnpurgedTLPs > 512) { |
| 153 | iSeqNum = StartNextPurgeSeqNum; |
| 154 | endSeqNum = iSeqNum + 256; |
| 155 | |
| 156 | // Cycle Through Replay Buffer, Purge TLPs and Update Statistics |
| 157 | while (iSeqNum !== endSeqNum) { |
| 158 | // Update Replay Count Statistics For TLP Being Purged |
| 159 | if (ReplayBuffer[iSeqNum].ReplayCnt > 0) |
| 160 | PktCntPerTimesReplayed[ReplayBuffer[iSeqNum].ReplayCnt-1]++; |
| 161 | |
| 162 | // Purge the TLP from the Replay Buffer |
| 163 | ReplayBuffer[iSeqNum] = null; |
| 164 | |
| 165 | PCIEX_QR_D2( "%s -> Purged TLP w/ SeqNum=%h", XactorName, iSeqNum ); |
| 166 | iSeqNum++; |
| 167 | NumUnpurgedTLPs--; |
| 168 | } |
| 169 | StartNextPurgeSeqNum = endSeqNum; |
| 170 | } |
| 171 | CurrReplayCnt = 0; |
| 172 | PCIEX_QR_D3( "%s -> Added TLP w/ SeqNum=%h to Replay Buffer. Contents:\n%s", XactorName, seqNum, ReplayBuffer[seqNum].PktToStr() ); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | function string FNXPCIEXactorReplayMonitor::GetStr() |
| 177 | { |
| 178 | string MethodName = "GetStr"; |
| 179 | string tmp; |
| 180 | integer i; |
| 181 | |
| 182 | sprintf( GetStr, "Replay Statisitcs\n" ); |
| 183 | sprintf( tmp, " Total Num Replays: %0d", TotalNumReplays ); |
| 184 | GetStr = { GetStr, tmp }; |
| 185 | sprintf( tmp, "\n Total Bytes Replayed: %0d", TotalBytesReplayed ); |
| 186 | GetStr = { GetStr, tmp }; |
| 187 | for (i=0; i < FNX_PCIE_XTR_MAX_NUM_RETRIES_PER_PKT; i++) { |
| 188 | sprintf( tmp, "\n Total Num Pkts Replayed %0d Time(s): %0d", |
| 189 | i+1, PktCntPerTimesReplayed[i] ); |
| 190 | GetStr = { GetStr, tmp }; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | task FNXPCIEXactorReplayMonitor::UpdateStats() |
| 195 | { |
| 196 | integer i; |
| 197 | |
| 198 | for (i=0; i < FNX_PCIE_XTR_MAX_REPLAY_ENTRIES; i++) { |
| 199 | if (ReplayBuffer[i] !== null) { |
| 200 | // Update Replay Count Statistics Per Unpurged TLP |
| 201 | if (ReplayBuffer[i].ReplayCnt > 0) |
| 202 | PktCntPerTimesReplayed[ReplayBuffer[i].ReplayCnt-1]++; |
| 203 | } |
| 204 | } |
| 205 | } |