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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 | /// | |
17 | /// \class AliMUONPayloadTracker | |
18 | /// Decodes rawdata from buffer and stores in TClonesArray. | |
19 | /// First version implement for Tracker | |
20 | /// | |
21 | /// \author Christian Finck | |
22 | ||
23 | #include "AliMUONPayloadTracker.h" | |
24 | ||
25 | #include "AliMUONDspHeader.h" | |
26 | #include "AliMUONBlockHeader.h" | |
27 | #include "AliMUONBusStruct.h" | |
28 | #include "AliMUONDDLTracker.h" | |
29 | ||
30 | #include "AliLog.h" | |
31 | ||
32 | /// \cond CLASSIMP | |
33 | ClassImp(AliMUONPayloadTracker) | |
34 | /// \endcond | |
35 | ||
36 | AliMUONPayloadTracker::AliMUONPayloadTracker() | |
37 | : TObject(), | |
38 | fBusPatchId(0), | |
39 | fDspId(0), | |
40 | fBlkId(0), | |
41 | fMaxDDL(20), | |
42 | fMaxBlock(2), | |
43 | fMaxDsp(5), | |
44 | fMaxBus(5), | |
45 | fDDLTracker(new AliMUONDDLTracker()), | |
46 | fBusStruct(new AliMUONBusStruct()), | |
47 | fBlockHeader(new AliMUONBlockHeader()), | |
48 | fDspHeader(new AliMUONDspHeader()), | |
49 | fParityErrBus(), | |
50 | fGlitchErrors(0) | |
51 | { | |
52 | /// | |
53 | /// create an object to decode MUON payload | |
54 | /// | |
55 | ||
56 | } | |
57 | ||
58 | //___________________________________ | |
59 | AliMUONPayloadTracker::~AliMUONPayloadTracker() | |
60 | { | |
61 | /// | |
62 | /// clean up | |
63 | /// | |
64 | delete fDDLTracker; | |
65 | delete fBusStruct; | |
66 | delete fBlockHeader; | |
67 | delete fDspHeader; | |
68 | } | |
69 | ||
70 | //______________________________________________________ | |
71 | Bool_t AliMUONPayloadTracker::Decode(UInt_t* buffer, Int_t totalDDLSize) | |
72 | { | |
73 | ||
74 | /// Each DDL is made with 2 Blocks each of which consists of 5 DSP's at most | |
75 | /// and each of DSP has at most 5 buspatches. | |
76 | /// The different structures, Block (CRT), DSP (FRT) and Buspatch, | |
77 | /// are identified by a key word 0xFC0000FC, 0xF000000F and 0xB000000B respectively. | |
78 | /// (fBusPatchManager no more needed !) | |
79 | ||
80 | ||
81 | //Read Header Size of DDL,Block,DSP and BusPatch | |
82 | static Int_t kBlockHeaderSize = fBlockHeader->GetHeaderLength(); | |
83 | static Int_t kDspHeaderSize = fDspHeader->GetHeaderLength(); | |
84 | static Int_t kBusPatchHeaderSize = fBusStruct->GetHeaderLength(); | |
85 | ||
86 | // size structures | |
87 | Int_t totalBlockSize; | |
88 | Int_t totalDspSize; | |
89 | Int_t totalBusPatchSize; | |
90 | Int_t dataSize; | |
91 | Int_t bufSize; | |
92 | ||
93 | // indexes | |
94 | Int_t indexBlk; | |
95 | Int_t indexDsp; | |
96 | Int_t indexBusPatch; | |
97 | Int_t index = 0; | |
98 | Int_t iBlock = 0; | |
99 | ||
100 | // CROCUS CRT | |
101 | while (buffer[index] == fBlockHeader->GetDefaultDataKey()) { | |
102 | ||
103 | if (iBlock > fMaxBlock) break; | |
104 | ||
105 | // copy within padding words | |
106 | memcpy(fBlockHeader->GetHeader(),&buffer[index], (kBlockHeaderSize)*4); | |
107 | ||
108 | totalBlockSize = fBlockHeader->GetTotalLength(); | |
109 | ||
110 | indexBlk = index; | |
111 | index += kBlockHeaderSize; | |
112 | ||
113 | // copy in TClonesArray | |
114 | fDDLTracker->AddBlkHeader(*fBlockHeader); | |
115 | ||
116 | // Crocus FRT | |
117 | Int_t iDsp = 0; | |
118 | while (buffer[index] == fDspHeader->GetDefaultDataKey()) { | |
119 | ||
120 | if (iDsp > fMaxDsp) break; // if ever... | |
121 | ||
122 | memcpy(fDspHeader->GetHeader(),&buffer[index], kDspHeaderSize*4); | |
123 | ||
124 | totalDspSize = fDspHeader->GetTotalLength(); | |
125 | ||
126 | if (fDspHeader->GetErrorWord()) { | |
127 | fDspHeader->Print(""); | |
128 | if (fDspHeader->GetErrorWord() == (0x000000B1 | fBlockHeader->GetDspId())){ | |
129 | // an event with a glitch in the readout has been detected | |
130 | // it means that somewhere a 1 byte word has been randomly inserted | |
131 | // all the readout sequence is shifted untill the next event | |
132 | ||
133 | AliWarning(Form("Glitch in data detected, skipping event ")); | |
134 | ||
135 | fGlitchErrors++; | |
136 | return kFALSE ; | |
137 | } | |
138 | } | |
139 | ||
140 | indexDsp = index; | |
141 | index += kDspHeaderSize; | |
142 | ||
143 | // copy in TClonesArray | |
144 | fDDLTracker->AddDspHeader(*fDspHeader, iBlock); | |
145 | ||
146 | // buspatch structure | |
147 | Int_t iBusPatch = 0; | |
148 | while (buffer[index] == fBusStruct->GetDefaultDataKey()) { | |
149 | ||
150 | if (iBusPatch > fMaxBus) break; // if ever | |
151 | ||
152 | //copy buffer into header structure | |
153 | memcpy(fBusStruct->GetHeader(), &buffer[index], kBusPatchHeaderSize*4); | |
154 | ||
155 | totalBusPatchSize = fBusStruct->GetTotalLength(); | |
156 | indexBusPatch = index; | |
157 | ||
158 | //Check Buspatch header, not empty events | |
159 | if(totalBusPatchSize > kBusPatchHeaderSize) { | |
160 | ||
161 | index += kBusPatchHeaderSize; | |
162 | dataSize = fBusStruct->GetLength(); | |
163 | bufSize = fBusStruct->GetBufSize(); | |
164 | ||
165 | if(dataSize > 0) { // check data present | |
166 | if (dataSize > bufSize) // check buffer size | |
167 | fBusStruct->SetAlloc(dataSize); | |
168 | ||
169 | //copy buffer into data structure | |
170 | memcpy(fBusStruct->GetData(), &buffer[index], dataSize*4); | |
171 | fBusStruct->SetBlockId(iBlock); // could be usefull in future applications ? | |
172 | fBusStruct->SetDspId(iDsp); | |
173 | ||
174 | // check parity | |
175 | if(!CheckDataParity()) | |
176 | AddParityErrBus(fBusStruct->GetBusPatchId()); | |
177 | ||
178 | // copy in TClonesArray | |
179 | fDDLTracker->AddBusPatch(*fBusStruct, iBlock, iDsp); | |
180 | ||
181 | } // dataSize test | |
182 | ||
183 | } // testing buspatch | |
184 | ||
185 | index = indexBusPatch + totalBusPatchSize; | |
186 | if (index >= totalDDLSize) {// check the end of DDL | |
187 | index = totalDDLSize - 1; // point to the last element of buffer | |
188 | break; | |
189 | } | |
190 | iBusPatch++; | |
191 | } // buspatch loop | |
192 | ||
193 | // skipping additionnal word if padding | |
194 | if (fDspHeader->GetPaddingWord() == 1) { | |
195 | if (buffer[index++] != fDspHeader->GetDefaultPaddingWord()) | |
196 | ||
197 | AliError(Form("Error in padding word for iBlock %d, iDsp %d, iBus %d\n", | |
198 | iBlock, iDsp, iBusPatch)); | |
199 | ||
200 | } | |
201 | ||
202 | index = indexDsp + totalDspSize; | |
203 | if (index >= totalDDLSize) { | |
204 | index = totalDDLSize - 1; | |
205 | break; | |
206 | } | |
207 | iDsp++; | |
208 | } // dsp loop | |
209 | ||
210 | index = indexBlk + totalBlockSize; | |
211 | if (index >= totalDDLSize) { | |
212 | index = totalDDLSize - 1; | |
213 | break; | |
214 | } | |
215 | iBlock++; | |
216 | } // block loop | |
217 | ||
218 | return kTRUE; | |
219 | } | |
220 | ||
221 | //______________________________________________________ | |
222 | void AliMUONPayloadTracker::ResetDDL() | |
223 | { | |
224 | /// reseting TClonesArray | |
225 | /// after each DDL | |
226 | /// | |
227 | fDDLTracker->GetBlkHeaderArray()->Delete(); | |
228 | fGlitchErrors = 0; | |
229 | fParityErrBus.Reset(); | |
230 | ||
231 | } | |
232 | ||
233 | //______________________________________________________ | |
234 | void AliMUONPayloadTracker::SetMaxBlock(Int_t blk) | |
235 | { | |
236 | /// set regional card number | |
237 | if (blk > 2) blk = 2; | |
238 | fMaxBlock = blk; | |
239 | } | |
240 | ||
241 | //______________________________________________________ | |
242 | Bool_t AliMUONPayloadTracker::CheckDataParity() | |
243 | { | |
244 | /// parity check | |
245 | /// taken from MuTrkBusPatch.cxx (sotfware test for CROCUS) | |
246 | /// A. Baldisseri | |
247 | ||
248 | Int_t parity; | |
249 | UInt_t data; | |
250 | ||
251 | Int_t dataSize = fBusStruct->GetLength(); | |
252 | for (int idata = 0; idata < dataSize; idata++) { | |
253 | ||
254 | data = fBusStruct->GetData(idata); | |
255 | ||
256 | // Compute the parity for each data word | |
257 | parity = data & 0x1; | |
258 | for (Int_t i = 1; i <= 30; i++) | |
259 | parity ^= ((data >> i) & 0x1); | |
260 | ||
261 | // Check | |
262 | if (parity != fBusStruct->GetParity(idata)) { | |
263 | ||
264 | AliWarning(Form("Parity error in word %d for manuId %d and channel %d\n", | |
265 | idata, fBusStruct->GetManuId(idata), fBusStruct->GetChannelId(idata))); | |
266 | ||
267 | return kFALSE; | |
268 | ||
269 | } | |
270 | } | |
271 | return kTRUE; | |
272 | } | |
273 | ||
274 | //______________________________________________________ | |
275 | void AliMUONPayloadTracker::AddParityErrBus(Int_t buspatch) | |
276 | { | |
277 | /// adding bus with at least on parity error | |
278 | fParityErrBus.Set(fParityErrBus.GetSize() + 1); | |
279 | fParityErrBus.AddAt(buspatch, fParityErrBus.GetSize() - 1); | |
280 | } |