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2906f4c2 | 1 | /************************************************************************** |
27639c72 | 2 | * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. * |
2906f4c2 | 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 | ||
ceb607d0 | 16 | /* $Id$*/ |
2906f4c2 | 17 | |
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | /// | |
20 | /// This class provides access to ITS SDD digits in raw data. | |
21 | /// | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | #include "AliITSRawStreamSDD.h" | |
25 | #include "AliRawReader.h" | |
39a7c5cc | 26 | #include "AliLog.h" |
2906f4c2 | 27 | |
28 | ClassImp(AliITSRawStreamSDD) | |
29 | ||
2906f4c2 | 30 | const Int_t AliITSRawStreamSDD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = { |
a97b3678 | 31 | |
32 | {240,241,242,246,247,248,252,253,254,258,259,260}, | |
33 | {264,265,266,270,271,272,276,277,278,282,283,284}, | |
34 | {288,289,290,294,295,296,300,301,302,306,307,308}, | |
35 | {312,313,314,318,319,320,-1,-1,-1,-1,-1,-1}, | |
36 | {243,244,245,249,250,251,255,256,257,261,262,263}, | |
37 | {267,268,269,273,274,275,279,280,281,285,286,287}, | |
38 | {291,292,293,297,298,299,303,304,305,309,310,311}, | |
39 | {315,316,317,321,322,323,-1,-1,-1,-1,-1,-1}, | |
40 | {324,325,326,327,332,333,334,335,340,341,342,343}, | |
41 | {348,349,350,351,356,357,358,359,364,365,366,367}, | |
42 | {372,373,374,375,380,381,382,383,388,389,390,391}, | |
43 | {396,397,398,399,404,405,406,407,412,413,414,415}, | |
44 | {420,421,422,423,428,429,430,431,436,437,438,439}, | |
45 | {444,445,446,447,452,453,454,455,460,461,462,463}, | |
46 | {468,469,470,471,476,477,478,479,484,485,486,487}, | |
47 | {492,493,494,495,-1,-1,-1,-1,-1,-1,-1,-1}, | |
48 | {328,329,330,331,336,337,338,339,344,345,346,347}, | |
49 | {352,353,354,355,360,361,362,363,368,369,370,371}, | |
50 | {376,377,378,379,384,385,386,387,392,393,394,395}, | |
51 | {400,401,402,403,408,409,410,411,416,417,418,419}, | |
52 | {424,425,426,427,432,433,434,435,440,441,442,443}, | |
53 | {448,449,450,451,456,457,458,459,464,465,466,467}, | |
54 | {472,473,474,475,480,481,482,483,488,489,490,491}, | |
55 | {496,497,498,499,-1,-1,-1,-1,-1,-1,-1,-1}}; | |
1ba0280f | 56 | |
57 | const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7}; | |
2906f4c2 | 58 | |
59 | AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) : | |
e56160b8 | 60 | AliITSRawStream(rawReader), |
61 | fData(0), | |
a97b3678 | 62 | fEventId(0), |
14dceddf | 63 | fCarlosId(-1), |
e56160b8 | 64 | fChannel(0), |
a97b3678 | 65 | fJitter(0), |
66 | fNCarlos(kModulesPerDDL), | |
27639c72 | 67 | fDDL(0), |
9c8e7d50 | 68 | fEndWords(0), |
69 | fResetSkip(0) | |
70 | { | |
2906f4c2 | 71 | // create an object to read ITS SDD raw digits |
27639c72 | 72 | |
73 | Reset(); | |
765a9f95 | 74 | for(Int_t i=0;i<kFifoWords;i++) fNfifo[i]=0; |
a97b3678 | 75 | for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0; |
76 | fRawReader->Reset(); | |
362c9d61 | 77 | fRawReader->Select("ITSSDD"); |
1ba0280f | 78 | |
27639c72 | 79 | for(Short_t i=0; i<kCarlosWords; i++) fICarlosWord[i]=0x30000000 + i; // 805306368+i; |
80 | for(Short_t i=0; i<kFifoWords; i++) fIFifoWord[i]=0x30000010 + i; // 805306384+i; | |
1ba0280f | 81 | } |
82 | ||
83 | UInt_t AliITSRawStreamSDD::ReadBits() | |
84 | { | |
85 | // read bits from the given channel | |
a97b3678 | 86 | UInt_t result = (fChannelData[fCarlosId][fChannel] & ((1<<fReadBits[fCarlosId][fChannel]) - 1)); |
87 | fChannelData[fCarlosId][fChannel] >>= fReadBits[fCarlosId][fChannel]; | |
88 | fLastBit[fCarlosId][fChannel] -= fReadBits[fCarlosId][fChannel]; | |
1ba0280f | 89 | return result; |
2906f4c2 | 90 | } |
91 | ||
1ba0280f | 92 | Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const |
93 | { | |
a97b3678 | 94 | // AMBRA decompression (from 8 to 10 bit) |
95 | ||
1ba0280f | 96 | if ((value & 0x80) == 0) { |
97 | return value & 0x7f; | |
98 | } else if ((value & 0x40) == 0) { | |
99 | return 0x081 + ((value & 0x3f) << 1); | |
100 | } else if ((value & 0x20) == 0) { | |
101 | return 0x104 + ((value & 0x1f) << 3); | |
102 | } else { | |
103 | return 0x208 + ((value & 0x1f) << 4); | |
104 | } | |
a97b3678 | 105 | |
1ba0280f | 106 | } |
2906f4c2 | 107 | |
108 | Bool_t AliITSRawStreamSDD::Next() | |
109 | { | |
110 | // read the next raw digit | |
111 | // returns kFALSE if there is no digit left | |
5dfa68c5 | 112 | // returns kTRUE and fCompletedModule=kFALSE when a digit is found |
113 | // returns kTRUE and fCompletedModule=kTRUE when a module is completed (=3x3FFFFFFF footer words) | |
114 | ||
2906f4c2 | 115 | fPrevModuleID = fModuleID; |
a97b3678 | 116 | fDDL=fRawReader->GetDDLID(); |
117 | Int_t ddln = fRawReader->GetDDLID(); | |
118 | if(ddln <0) ddln=0; | |
5dfa68c5 | 119 | fCompletedModule=kFALSE; |
a97b3678 | 120 | |
a97b3678 | 121 | while (kTRUE) { |
5dfa68c5 | 122 | if(fResetSkip==0){ |
123 | Bool_t kSkip = ResetSkip(ddln); | |
124 | fResetSkip=1; | |
125 | if(!kSkip) return kSkip; | |
126 | } | |
27639c72 | 127 | |
a97b3678 | 128 | if ((fChannel < 0) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel])) { |
14dceddf | 129 | |
130 | if (!fRawReader->ReadNextInt(fData)) return kFALSE; // read next word | |
a97b3678 | 131 | |
a97b3678 | 132 | ddln = fRawReader->GetDDLID(); |
27639c72 | 133 | if(ddln!=fDDL) { |
9c8e7d50 | 134 | Reset(); |
9c8e7d50 | 135 | fDDL=fRawReader->GetDDLID(); |
136 | } | |
a97b3678 | 137 | if(ddln < 0 || ddln > (kDDLsNumber-1)) ddln = 0; |
5dfa68c5 | 138 | |
a97b3678 | 139 | fChannel = -1; |
14dceddf | 140 | if((fData >> 16) == 0x7F00){ // jitter word for data since october 2007 |
9c8e7d50 | 141 | for(Int_t i=0;i<kDDLsNumber;i++){fSkip[i]=0;} |
142 | fResetSkip=0; | |
143 | fEndWords=0; | |
5dfa68c5 | 144 | continue; |
9c8e7d50 | 145 | } |
5dfa68c5 | 146 | |
14dceddf | 147 | UInt_t nData28= fData >> 28; |
148 | UInt_t nData30= fData >> 30; | |
149 | ||
150 | ||
151 | if (nData28== 0x02) { // header | |
152 | fEventId = (fData >> 3) & 0x07FF; | |
153 | } else if (nData28== 0x03) { // Carlos and FIFO words or Footers | |
154 | if(fData>=fICarlosWord[0]&&fData<=fICarlosWord[11]) { // Carlos Word | |
155 | if(fEndWords==12) continue; // out of event | |
156 | fCarlosId = fData-fICarlosWord[0]; | |
157 | Int_t iFifoIdx = fCarlosId/3; | |
158 | if(fNCarlos == 8) iFifoIdx=fCarlosId/2; | |
159 | fNfifo[iFifoIdx] = fCarlosId; | |
160 | } else if (fData>=fIFifoWord[0]&&fData<=fIFifoWord[3]){ // FIFO word | |
161 | if(fEndWords==12) continue; // out of event | |
162 | fCarlosId = fNfifo[fData-fIFifoWord[0]]; | |
163 | } else if(fData==0x3FFFFFFF){ // Carlos footer | |
9c8e7d50 | 164 | fICountFoot[fCarlosId]++; // stop before the last word (last word=jitter) |
5dfa68c5 | 165 | if(fICountFoot[fCarlosId]==3){ |
166 | fCompletedModule=kTRUE; | |
167 | return kTRUE; | |
9c8e7d50 | 168 | } |
14dceddf | 169 | } else if(fData==0x3F1F1F1F){ // CarlosRX footer |
170 | fEndWords++; | |
171 | if(fEndWords<=12) continue; | |
172 | }else{ | |
173 | fRawReader->AddMajorErrorLog(kDataError,"Too many footers"); | |
174 | AliWarning(Form("invalid data: too many footers\n", fData)); | |
175 | return kFALSE; | |
9c8e7d50 | 176 | } |
14dceddf | 177 | } else if (nData30 == 0x02 || nData30 == 0x03) { |
178 | fChannel = nData30-2; | |
179 | fChannelData[fCarlosId][fChannel] += | |
180 | (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]); | |
181 | fLastBit[fCarlosId][fChannel] += 30; | |
a97b3678 | 182 | } else { // unknown data format |
9c8e7d50 | 183 | fRawReader->AddMajorErrorLog(kDataFormatErr,Form("Invalid data %8.8x",fData)); |
184 | AliWarning(Form("invalid data: %8.8x\n", fData)); | |
185 | return kFALSE; | |
a97b3678 | 186 | } |
187 | ||
14dceddf | 188 | if (fNCarlos == 8 && fCarlosId >= 8) continue; // old data, fNCarlos = 8; |
189 | ||
190 | fModuleID = fgkDDLModuleMap[fRawReader->GetDDLID()][fCarlosId]; | |
191 | ||
a97b3678 | 192 | } else { // decode data |
a97b3678 | 193 | if (fReadCode[fCarlosId][fChannel]) {// read the next code word |
9c8e7d50 | 194 | fChannelCode[fCarlosId][fChannel] = ReadBits(); |
195 | fReadCode[fCarlosId][fChannel] = kFALSE; | |
196 | fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]]; | |
a97b3678 | 197 | } else { // read the next data word |
9c8e7d50 | 198 | UInt_t data = ReadBits(); |
199 | fReadCode[fCarlosId][fChannel] = kTRUE; | |
200 | fReadBits[fCarlosId][fChannel] = 3; | |
201 | if (fChannelCode[fCarlosId][fChannel] == 0) { // set the time bin | |
202 | fTimeBin[fCarlosId][fChannel] = data; | |
203 | } else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode | |
204 | fTimeBin[fCarlosId][fChannel] = 0; | |
205 | fAnode[fCarlosId][fChannel]++; | |
206 | } else { // ADC signal data | |
207 | fSignal = DecompAmbra(data + (1 << fChannelCode[fCarlosId][fChannel]) + fLowThreshold[fChannel]); | |
208 | fCoord1 = fAnode[fCarlosId][fChannel]; | |
209 | fCoord2 = fTimeBin[fCarlosId][fChannel]; | |
210 | fTimeBin[fCarlosId][fChannel]++; | |
14dceddf | 211 | //printf("Data read, Module=%d , Anode=%d , Time=%d , Charge=%d\n",fModuleID,fCoord1,fCoord2,fSignal); |
9c8e7d50 | 212 | return kTRUE; |
213 | } | |
a97b3678 | 214 | } |
215 | } | |
216 | } | |
14dceddf | 217 | return kFALSE; |
2906f4c2 | 218 | } |
1ba0280f | 219 | |
a97b3678 | 220 | void AliITSRawStreamSDD::Reset(){ |
765a9f95 | 221 | |
a97b3678 | 222 | //reset data member for a new ddl |
a97b3678 | 223 | for(Int_t i=0;i<2;i++){ |
224 | for(Int_t ic=0;ic<kModulesPerDDL;ic++){ | |
225 | fChannelData[ic][i]=0; | |
226 | fLastBit[ic][i]=0; | |
227 | fChannelCode[ic][i]=0; | |
14dceddf | 228 | fReadCode[ic][i]=kTRUE; |
229 | fReadBits[ic][i]=3; | |
a97b3678 | 230 | fTimeBin[ic][i]=0; |
231 | fAnode[ic][i]=0; | |
232 | } | |
233 | fLowThreshold[i]=0; | |
234 | } | |
27639c72 | 235 | for(Int_t i=0;i<kModulesPerDDL;i++) fICountFoot[i]=0; |
a97b3678 | 236 | } |
765a9f95 | 237 | |
238 | Bool_t AliITSRawStreamSDD::ResetSkip(Int_t ddln){ | |
14dceddf | 239 | // skip the 9 DDL header words |
5dfa68c5 | 240 | Bool_t startCount=kFALSE; |
765a9f95 | 241 | while (fSkip[ddln] < 9) { |
27639c72 | 242 | if (!fRawReader->ReadNextInt(fData)) { |
9c8e7d50 | 243 | return kFALSE; |
244 | } | |
5dfa68c5 | 245 | if(fData==0xFFFFFFFF) startCount=kTRUE; |
9c8e7d50 | 246 | //printf("%x\n",fData); |
765a9f95 | 247 | if ((fData >> 30) == 0x01) continue; // JTAG word |
5dfa68c5 | 248 | if(startCount) fSkip[ddln]++; |
765a9f95 | 249 | } |
250 | return kTRUE; | |
251 | } | |
252 |