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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | // $Id$ | |
17 | ||
18 | //----------------------------------------------------------------------------- | |
19 | /// \class AliMUONPayloadTracker | |
20 | /// Decodes rawdata from buffer and stores in TClonesArray. | |
21 | /// First version implement for Tracker | |
22 | /// | |
23 | /// \author Christian Finck | |
24 | //----------------------------------------------------------------------------- | |
25 | ||
26 | #include <TObjString.h> | |
27 | ||
28 | #include "AliMUONPayloadTracker.h" | |
29 | ||
30 | #include "AliMUONDspHeader.h" | |
31 | #include "AliMUONBlockHeader.h" | |
32 | #include "AliMUONBusStruct.h" | |
33 | #include "AliMUONDDLTracker.h" | |
34 | ||
35 | #include "AliMUONLogger.h" | |
36 | #include "AliLog.h" | |
37 | ||
38 | /// \cond CLASSIMP | |
39 | ClassImp(AliMUONPayloadTracker) | |
40 | /// \endcond | |
41 | ||
42 | AliMUONPayloadTracker::AliMUONPayloadTracker() | |
43 | : TObject(), | |
44 | fBusPatchId(0), | |
45 | fDspId(0), | |
46 | fBlkId(0), | |
47 | fMaxDDL(20), | |
48 | fMaxBlock(2), | |
49 | fMaxDsp(5), | |
50 | fMaxBus(5), | |
51 | fDDLTracker(new AliMUONDDLTracker()), | |
52 | fBusStruct(new AliMUONBusStruct()), | |
53 | fBlockHeader(new AliMUONBlockHeader()), | |
54 | fDspHeader(new AliMUONDspHeader()), | |
55 | fLog(new AliMUONLogger(1000)), | |
56 | fParityErrors(0), | |
57 | fGlitchErrors(0), | |
58 | fPaddingErrors(0), | |
59 | fWarnings(kTRUE) | |
60 | { | |
61 | /// | |
62 | /// create an object to decode MUON payload | |
63 | /// | |
64 | ||
65 | } | |
66 | ||
67 | //___________________________________ | |
68 | AliMUONPayloadTracker::~AliMUONPayloadTracker() | |
69 | { | |
70 | /// | |
71 | /// clean up | |
72 | /// | |
73 | delete fDDLTracker; | |
74 | delete fBusStruct; | |
75 | delete fBlockHeader; | |
76 | delete fDspHeader; | |
77 | delete fLog; | |
78 | } | |
79 | ||
80 | //______________________________________________________ | |
81 | Bool_t AliMUONPayloadTracker::Decode(UInt_t* buffer, Int_t totalDDLSize) | |
82 | { | |
83 | ||
84 | /// Each DDL is made with 2 Blocks each of which consists of 5 DSP's at most | |
85 | /// and each of DSP has at most 5 buspatches. | |
86 | /// The different structures, Block (CRT), DSP (FRT) and Buspatch, | |
87 | /// are identified by a key word 0xFC0000FC, 0xF000000F and 0xB000000B respectively. | |
88 | /// (fBusPatchManager no more needed !) | |
89 | ||
90 | ||
91 | //Read Header Size of DDL,Block,DSP and BusPatch | |
92 | static Int_t kBlockHeaderSize = fBlockHeader->GetHeaderLength(); | |
93 | static Int_t kDspHeaderSize = fDspHeader->GetHeaderLength(); | |
94 | static Int_t kBusPatchHeaderSize = fBusStruct->GetHeaderLength(); | |
95 | ||
96 | // size structures | |
97 | Int_t totalBlockSize; | |
98 | Int_t totalDspSize; | |
99 | Int_t totalBusPatchSize; | |
100 | Int_t dataSize; | |
101 | Int_t bufSize; | |
102 | ||
103 | // indexes | |
104 | Int_t indexBlk; | |
105 | Int_t indexDsp; | |
106 | Int_t indexBusPatch; | |
107 | Int_t index = 0; | |
108 | Int_t iBlock = 0; | |
109 | ||
110 | // CROCUS CRT | |
111 | while (buffer[index] == fBlockHeader->GetDefaultDataKey()) { | |
112 | ||
113 | if (iBlock > fMaxBlock) break; | |
114 | ||
115 | // copy within padding words | |
116 | memcpy(fBlockHeader->GetHeader(),&buffer[index], (kBlockHeaderSize)*4); | |
117 | ||
118 | totalBlockSize = fBlockHeader->GetTotalLength(); | |
119 | ||
120 | indexBlk = index; | |
121 | index += kBlockHeaderSize; | |
122 | ||
123 | // copy in TClonesArray | |
124 | fDDLTracker->AddBlkHeader(*fBlockHeader); | |
125 | ||
126 | // Crocus FRT | |
127 | Int_t iDsp = 0; | |
128 | while (buffer[index] == fDspHeader->GetDefaultDataKey()) { | |
129 | ||
130 | if (iDsp > fMaxDsp) break; // if ever... | |
131 | ||
132 | memcpy(fDspHeader->GetHeader(),&buffer[index], kDspHeaderSize*4); | |
133 | ||
134 | totalDspSize = fDspHeader->GetTotalLength(); | |
135 | ||
136 | if (fDspHeader->GetErrorWord()) { | |
137 | // fDspHeader->Print(""); | |
138 | if ( fDspHeader->GetErrorWord() == (0x000000B1 | fBlockHeader->GetDspId()) | |
139 | || fDspHeader->GetErrorWord() == (0x00000091 | fBlockHeader->GetDspId()) ){ | |
140 | // an event with a glitch in the readout has been detected | |
141 | // it means that somewhere a 1 byte word has been randomly inserted | |
142 | // all the readout sequence is shifted untill the next event | |
143 | ||
144 | Char_t* msg = Form("Glitch error detected in DSP %d, skipping event ", fBlockHeader->GetDspId()); | |
145 | ||
146 | if (fWarnings) AliWarning(msg); | |
147 | AddErrorMessage(msg); | |
148 | fGlitchErrors++; | |
149 | return kFALSE ; | |
150 | } | |
151 | } | |
152 | ||
153 | indexDsp = index; | |
154 | index += kDspHeaderSize; | |
155 | ||
156 | // copy in TClonesArray | |
157 | fDDLTracker->AddDspHeader(*fDspHeader, iBlock); | |
158 | ||
159 | // buspatch structure | |
160 | Int_t iBusPatch = 0; | |
161 | while (buffer[index] == fBusStruct->GetDefaultDataKey()) { | |
162 | ||
163 | if (iBusPatch > fMaxBus) break; // if ever | |
164 | ||
165 | //copy buffer into header structure | |
166 | memcpy(fBusStruct->GetHeader(), &buffer[index], kBusPatchHeaderSize*4); | |
167 | ||
168 | totalBusPatchSize = fBusStruct->GetTotalLength(); | |
169 | indexBusPatch = index; | |
170 | ||
171 | //Check Buspatch header, not empty events | |
172 | if(totalBusPatchSize > kBusPatchHeaderSize) { | |
173 | ||
174 | index += kBusPatchHeaderSize; | |
175 | dataSize = fBusStruct->GetLength(); | |
176 | bufSize = fBusStruct->GetBufSize(); | |
177 | ||
178 | if(dataSize > 0) { // check data present | |
179 | if (dataSize > bufSize) // check buffer size | |
180 | fBusStruct->SetAlloc(dataSize); | |
181 | ||
182 | //copy buffer into data structure | |
183 | memcpy(fBusStruct->GetData(), &buffer[index], dataSize*4); | |
184 | fBusStruct->SetBlockId(iBlock); // could be usefull in future applications ? | |
185 | fBusStruct->SetDspId(iDsp); | |
186 | ||
187 | // check parity | |
188 | if(!CheckDataParity()) { | |
189 | fParityErrors++; | |
190 | return kFALSE; | |
191 | } | |
192 | ||
193 | // copy in TClonesArray | |
194 | fDDLTracker->AddBusPatch(*fBusStruct, iBlock, iDsp); | |
195 | ||
196 | } // dataSize test | |
197 | ||
198 | } // testing buspatch | |
199 | ||
200 | index = indexBusPatch + totalBusPatchSize; | |
201 | if (index >= totalDDLSize) {// check the end of DDL | |
202 | index = totalDDLSize - 1; // point to the last element of buffer | |
203 | break; | |
204 | } | |
205 | iBusPatch++; | |
206 | } // buspatch loop | |
207 | ||
208 | // skipping additionnal word if padding | |
209 | if (fDspHeader->GetPaddingWord() == 1) { | |
210 | if (buffer[index++] != fDspHeader->GetDefaultPaddingWord()) { | |
211 | ||
212 | Char_t *msg = Form("Padding word error for iBlock %d, iDsp %d, iBus %d\n", | |
213 | iBlock, iDsp, iBusPatch); | |
214 | ||
215 | if (fWarnings) AliWarning(msg); | |
216 | AddErrorMessage(msg); | |
217 | fPaddingErrors++; | |
218 | } | |
219 | } | |
220 | ||
221 | index = indexDsp + totalDspSize; | |
222 | if (index >= totalDDLSize) { | |
223 | index = totalDDLSize - 1; | |
224 | break; | |
225 | } | |
226 | iDsp++; | |
227 | } // dsp loop | |
228 | ||
229 | index = indexBlk + totalBlockSize; | |
230 | if (index >= totalDDLSize) { | |
231 | index = totalDDLSize - 1; | |
232 | break; | |
233 | } | |
234 | ||
235 | iBlock++; | |
236 | } // block loop | |
237 | ||
238 | if (buffer[index++] != fBlockHeader->GetDdlDataKey() || | |
239 | buffer[index++] != fBlockHeader->GetDdlDataKey()) { | |
240 | ||
241 | Char_t *msg = Form("Bad end of DDL data key\n"); | |
242 | ||
243 | if (fWarnings) AliWarning(msg); | |
244 | AddErrorMessage(msg); | |
245 | } | |
246 | ||
247 | ||
248 | return kTRUE; | |
249 | } | |
250 | ||
251 | //______________________________________________________ | |
252 | void AliMUONPayloadTracker::ResetDDL() | |
253 | { | |
254 | /// reseting TClonesArray | |
255 | /// after each DDL | |
256 | /// | |
257 | fDDLTracker->GetBlkHeaderArray()->Delete(); | |
258 | fGlitchErrors = 0; | |
259 | fPaddingErrors = 0; | |
260 | fParityErrors = 0; | |
261 | ||
262 | } | |
263 | ||
264 | //______________________________________________________ | |
265 | void AliMUONPayloadTracker::SetMaxBlock(Int_t blk) | |
266 | { | |
267 | /// set regional card number | |
268 | if (blk > 2) blk = 2; | |
269 | fMaxBlock = blk; | |
270 | } | |
271 | ||
272 | //______________________________________________________ | |
273 | Bool_t AliMUONPayloadTracker::CheckDataParity() | |
274 | { | |
275 | /// parity check | |
276 | /// taken from MuTrkBusPatch.cxx (sotfware test for CROCUS) | |
277 | /// A. Baldisseri | |
278 | ||
279 | Int_t parity; | |
280 | UInt_t data; | |
281 | ||
282 | Int_t dataSize = fBusStruct->GetLength(); | |
283 | for (int idata = 0; idata < dataSize; idata++) { | |
284 | ||
285 | data = fBusStruct->GetData(idata); | |
286 | ||
287 | // Compute the parity for each data word | |
288 | parity = data & 0x1; | |
289 | for (Int_t i = 1; i <= 30; i++) | |
290 | parity ^= ((data >> i) & 0x1); | |
291 | ||
292 | // Check | |
293 | if (parity != fBusStruct->GetParity(idata)) { | |
294 | ||
295 | Char_t* msg = Form("Parity error in word %d for manuId %d and channel %d in buspatch %d\n", | |
296 | idata, fBusStruct->GetManuId(idata), fBusStruct->GetChannelId(idata), | |
297 | fBusStruct->GetBusPatchId()); | |
298 | ||
299 | if (fWarnings) AliWarning(msg); | |
300 | AddErrorMessage(msg); | |
301 | fParityErrors++; | |
302 | ||
303 | return kFALSE; | |
304 | ||
305 | } | |
306 | } | |
307 | return kTRUE; | |
308 | } | |
309 | ||
310 | //______________________________________________________ | |
311 | void AliMUONPayloadTracker::AddErrorMessage(const Char_t* msg) | |
312 | { | |
313 | /// adding message to logger | |
314 | ||
315 | TString tmp(msg); | |
316 | ||
317 | Int_t pos = tmp.First("\n"); | |
318 | tmp[pos] = 0; | |
319 | ||
320 | fLog->Log(tmp.Data()); | |
321 | } | |
322 | ||
323 |