source:
branches /fat32-0.9 /src /ifscache.c @
70
| Last change on this file since 70 was 70, checked in by KO Myung-Hun, 17 years ago | |
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Fix the crash when removing USB removable media without 'eject' |
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| File size: 46.8 KB | |
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| 1 | #include<stdio.h> |
| 2 | #include<stdlib.h> |
| 3 | #include<stdarg.h> |
| 4 | #include<string.h> |
| 5 | #include<stddef.h> |
| 6 | #include<time.h> |
| 7 | #include<dos.h> |
| 8 | |
| 9 | #define INCL_DOS |
| 10 | #define INCL_DOSDEVIOCTL |
| 11 | #define INCL_DOSDEVICES |
| 12 | #define INCL_DOSERRORS |
| 13 | |
| 14 | #include"os2.h" |
| 15 | #include"portable.h" |
| 16 | #include"fat32ifs.h" |
| 17 | |
| 18 | |
| 19 | #define NOT_USED 0xFFFFFFFF |
| 20 | #define MAX_SECTORS 4096 |
| 21 | #define PAGE_SIZE 4096 |
| 22 | #define MAX_SLOTS 0x4000 |
| 23 | #define FREE_SLOT 0xFFFF |
| 24 | |
| 25 | PRIVATEvolatileUSHORTusOldestEntry=0xFFFF; |
| 26 | PRIVATEvolatileUSHORTusNewestEntry=0xFFFF; |
| 27 | PRIVATEvolatileUSHORTusWaitCount=0; |
| 28 | PRIVATEvolatileUSHORTusRQInUse=0; |
| 29 | PRIVATEULONGLinCacheAddr=0; |
| 30 | PRIVATESELrgCacheSel[(MAX_SECTORS/128)+1]={0}; |
| 31 | PRIVATEUSHORTusSelCount=1; |
| 32 | PRIVATEUSHORTusPhysCount=0; |
| 33 | PRIVATEUSHORTusRQCount=MAX_RQS; |
| 34 | |
| 35 | PRIVATECACHEBASEpCacheBase[MAX_SECTORS]={0}; |
| 36 | PRIVATECACHEBASE2pCacheBase2[MAX_SECTORS]={0}; |
| 37 | PRIVATEBOOLrgfDirty[MAX_SECTORS]={0}; |
| 38 | PRIVATEUSHORTrgSlot[MAX_SLOTS]={0}; |
| 39 | PRIVATERQLISTrgRQ[MAX_RQS]={0}; |
| 40 | |
| 41 | PRIVATEBOOLIsSectorInCache(PVOLINFOpVolInfo,ULONGulSector,PBYTEbSector); |
| 42 | PRIVATEBOOLfStoreSector(PVOLINFOpVolInfo,ULONGulSector,PBYTEpbSector,BOOLfDirty); |
| 43 | PRIVATEPVOIDGetAddress(ULONGulEntry); |
| 44 | PRIVATEPVOIDGetPhysAddr(PRQLISTpRQ,ULONGulEntry); |
| 45 | PRIVATEBOOLfFindSector(ULONGulSector,BYTEbDrive,PUSHORTpusIndex); |
| 46 | PRIVATEUSHORTWriteCacheSector(PVOLINFOpVolInfo,USHORTusCBIndex,BOOLfSetTime); |
| 47 | PRIVATEVOIDUpdateChain(USHORTusCBIndex); |
| 48 | PRIVATEVOIDvGetSectorFromCache(USHORTusCBIndex,PBYTEpbSector); |
| 49 | PRIVATEVOIDvReplaceSectorInCache(USHORTusCBIndex,PBYTEpbSector,BOOLfDirty); |
| 50 | PRIVATEVOIDLockBuffer(PCACHEBASEpBase); |
| 51 | PRIVATEVOIDUnlockBuffer(PCACHEBASEpBase); |
| 52 | PRIVATEPRQLISTGetRequestList(PVOLINFOpVolInfo,BOOLfWait); |
| 53 | PRIVATEBOOLfAddToRLH(PRQLISTpRQ,USHORTusCBIndex,BYTEbPriority); |
| 54 | PRIVATEVOIDvCallStrategy(PVOLINFOpVolInfo,PRQLISTpRQ); |
| 55 | PRIVATEVOIDrlhNotify(VOID); |
| 56 | PRIVATEVOIDrhNotify(VOID); |
| 57 | PRIVATEVOIDvCheckRequest(PREQUESTpRequest); |
| 58 | PRIVATEUSHORTusEmergencyFlush(VOID); |
| 59 | |
| 60 | /****************************************************************** |
| 61 | * |
| 62 | ******************************************************************/ |
| 63 | BOOLInitCache(ULONGulSectors) |
| 64 | { |
| 65 | staticBOOLfInitDone=FALSE; |
| 66 | ULONGulLinCacheAddr; |
| 67 | PCACHEBASEpBase; |
| 68 | PCACHEBASE2pBase2; |
| 69 | USHORTrc; |
| 70 | USHORTusIndex; |
| 71 | ULONGulSize; |
| 72 | PVOIDp; |
| 73 | PAGELISTPageList; |
| 74 | ULONGlinPageList; |
| 75 | |
| 76 | if(fInitDone) |
| 77 | returnFALSE; |
| 78 | fInitDone=TRUE; |
| 79 | |
| 80 | if(!ulSectors||f32Parms.usCacheSize) |
| 81 | returnFALSE; |
| 82 | |
| 83 | if(ulSectors>MAX_SECTORS) |
| 84 | ulSectors=MAX_SECTORS; |
| 85 | Message("Allocating cache space for %ld sectors",ulSectors); |
| 86 | |
| 87 | f32Parms.usCacheSize=0L; |
| 88 | |
| 89 | |
| 90 | /* Allocate enough selectors */ |
| 91 | |
| 92 | usSelCount=(USHORT)(ulSectors/128+(ulSectors%128?1:0)); |
| 93 | |
| 94 | rc=DevHelp_AllocGDTSelector(rgCacheSel,usSelCount); |
| 95 | if(rc) |
| 96 | { |
| 97 | FatalMessage("FAT32: AllocGDTSelector failed, rc = %d",rc); |
| 98 | returnFALSE; |
| 99 | } |
| 100 | |
| 101 | /* Allocate lineair memory */ |
| 102 | |
| 103 | ulSize=ulSectors*(ULONG)sizeof(CACHE); |
| 104 | ulLinCacheAddr=linalloc(ulSize,f32Parms.fHighMem,f32Parms.fHighMem); |
| 105 | if(ulLinCacheAddr==0xFFFFFFFF) |
| 106 | { |
| 107 | /* If tried to use high memory, try to use low memory */ |
| 108 | if(f32Parms.fHighMem) |
| 109 | { |
| 110 | f32Parms.fHighMem=FALSE; |
| 111 | ulLinCacheAddr=linalloc(ulSize,f32Parms.fHighMem,f32Parms.fHighMem); |
| 112 | } |
| 113 | |
| 114 | if(ulLinCacheAddr==0xFFFFFFFF) |
| 115 | returnFALSE; |
| 116 | } |
| 117 | |
| 118 | /* Fill the selectors */ |
| 119 | |
| 120 | LinCacheAddr=ulLinCacheAddr; |
| 121 | for(usIndex=0;usIndex<usSelCount;usIndex++) |
| 122 | { |
| 123 | ULONGulBlockSize=0x10000; |
| 124 | if(ulBlockSize>ulSize) |
| 125 | ulBlockSize=ulSize; |
| 126 | rc=DevHelp_LinToGDTSelector(rgCacheSel[usIndex], |
| 127 | LinCacheAddr+(ULONG)usIndex*0x10000,ulBlockSize); |
| 128 | if(rc) |
| 129 | { |
| 130 | FatalMessage("FAT32: LinToGDTSelector (%d) failed, rc = %d",usIndex,rc); |
| 131 | returnFALSE; |
| 132 | } |
| 133 | ulSize-=0x10000; |
| 134 | } |
| 135 | |
| 136 | |
| 137 | f32Parms.usCacheSize=(USHORT)ulSectors; |
| 138 | f32Parms.usDirtyTreshold= |
| 139 | f32Parms.usCacheSize-(f32Parms.usCacheSize/20); |
| 140 | |
| 141 | /* initiate request lists */ |
| 142 | |
| 143 | p=&PageList; |
| 144 | rc=DevHelp_VirtToLin(SELECTOROF(p),OFFSETOF(p),&linPageList); |
| 145 | if(rc) |
| 146 | FatalMessage("FAT32:VirtToLin for pagelist failed, rc = %d",rc); |
| 147 | |
| 148 | usRQCount=(USHORT)((ULONG)MAX_RQS*ulSectors/MAX_SECTORS); |
| 149 | if(usRQCount<MAX_RQS) |
| 150 | usRQCount++; |
| 151 | for(usIndex=0;usIndex<usRQCount;usIndex++) |
| 152 | { |
| 153 | USHORTusIndex2; |
| 154 | |
| 155 | rgRQ[usIndex].usNr=usIndex; |
| 156 | |
| 157 | /* 65535 bytes */ |
| 158 | ulSize=MAXRQENTRIES*512L; |
| 159 | |
| 160 | rc=DevHelp_AllocGDTSelector(&rgRQ[usIndex].Sel,1); |
| 161 | if(rc) |
| 162 | { |
| 163 | FatalMessage("FAT32: AllocGDTSelector for RLH failed, rc = %d",rc); |
| 164 | returnFALSE; |
| 165 | } |
| 166 | |
| 167 | rgRQ[usIndex].ulLin=linalloc(ulSize,f32Parms.fHighMem,f32Parms.fHighMem); |
| 168 | if(rgRQ[usIndex].ulLin==0xFFFFFFFF) |
| 169 | { |
| 170 | /* If tried to use high memory, try to use low memory */ |
| 171 | if(f32Parms.fHighMem) |
| 172 | { |
| 173 | f32Parms.fHighMem=FALSE; |
| 174 | rgRQ[usIndex].ulLin=linalloc(ulSize,f32Parms.fHighMem,f32Parms.fHighMem); |
| 175 | } |
| 176 | |
| 177 | if(rgRQ[usIndex].ulLin==0xFFFFFFFF) |
| 178 | { |
| 179 | FatalMessage("FAT32: linAlloc for RLH failed"); |
| 180 | returnFALSE; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | rc=DevHelp_LinToGDTSelector(rgRQ[usIndex].Sel, |
| 185 | rgRQ[usIndex].ulLin,ulSize); |
| 186 | if(rc) |
| 187 | { |
| 188 | FatalMessage("FAT32: LinToGDTSelector for RLH failed, rc = %d",rc); |
| 189 | returnFALSE; |
| 190 | } |
| 191 | |
| 192 | usPhysCount=(USHORT)(ulSize/PAGE_SIZE)+(ulSize%PAGE_SIZE?1:0); |
| 193 | |
| 194 | for(usIndex2=0;usIndex2<usPhysCount;usIndex2++) |
| 195 | { |
| 196 | ULONGulBlockSize=PAGE_SIZE; |
| 197 | if(ulBlockSize>ulSize) |
| 198 | ulBlockSize=ulSize; |
| 199 | |
| 200 | rc=DevHelp_LinToPageList(rgRQ[usIndex].ulLin+(ULONG)usIndex2*PAGE_SIZE, |
| 201 | ulBlockSize, |
| 202 | linPageList, |
| 203 | &ulBlockSize); |
| 204 | if(rc) |
| 205 | { |
| 206 | FatalMessage("FAT32: LinToPageList for RLH (%d) failed, rc = %d",usIndex2,rc); |
| 207 | returnFALSE; |
| 208 | } |
| 209 | if(ulBlockSize!=1) |
| 210 | { |
| 211 | FatalMessage("FAT32: LinToPageList for RLH (%d) did not fill 1 entry",rc); |
| 212 | returnFALSE; |
| 213 | } |
| 214 | |
| 215 | rgRQ[usIndex].rgPhys[usIndex2]=PageList.PhysAddr; |
| 216 | ulSize-=PAGE_SIZE; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | pBase=pCacheBase; |
| 221 | pBase2=pCacheBase2; |
| 222 | for(usIndex=0;usIndex<f32Parms.usCacheSize;usIndex++) |
| 223 | { |
| 224 | pBase->ulSector=NOT_USED; |
| 225 | pBase->bDrive=0xFF; |
| 226 | pBase2->usOlder=0xFFFF; |
| 227 | pBase2->usNewer=0xFFFF; |
| 228 | if(usIndex+1<f32Parms.usCacheSize) |
| 229 | pBase->usNext=usIndex+1; |
| 230 | else |
| 231 | pBase->usNext=FREE_SLOT; |
| 232 | pBase++; |
| 233 | pBase2++; |
| 234 | } |
| 235 | memset(rgSlot,0xFF,sizeofrgSlot); |
| 236 | memset(rgfDirty,FALSE,sizeofrgfDirty); |
| 237 | |
| 238 | f32Parms.usCacheUsed=0L; |
| 239 | |
| 240 | /* |
| 241 | Making sure all segments are available during interrupts |
| 242 | */ |
| 243 | p=(PVOID)InitCache; |
| 244 | rc=FSH_FORCENOSWAP(SELECTOROF(p)); |
| 245 | if(rc) |
| 246 | FatalMessage("FAT32: FSH_FORCENOSWAP on CODE Segment failed, rc=%u",rc); |
| 247 | |
| 248 | p=(PVOID)pCacheBase; |
| 249 | rc=FSH_FORCENOSWAP(SELECTOROF(p)); |
| 250 | if(rc) |
| 251 | FatalMessage("FAT32:FSH_FORCENOSWAP on pCacheBase Segment failed, rc=%u",rc); |
| 252 | |
| 253 | p=(PVOID)&LinCacheAddr; |
| 254 | rc=FSH_FORCENOSWAP(SELECTOROF(p)); |
| 255 | if(rc) |
| 256 | FatalMessage("FAT32:FSH_FORCENOSWAP on DATA Segment failed, rc=%u",rc); |
| 257 | |
| 258 | p=(PVOID)rgRQ; |
| 259 | rc=FSH_FORCENOSWAP(SELECTOROF(p)); |
| 260 | if(rc) |
| 261 | FatalMessage("FAT32:FSH_FORCENOSWAP on rgRQ Segment failed, rc=%u",rc); |
| 262 | |
| 263 | |
| 264 | returnTRUE; |
| 265 | } |
| 266 | |
| 267 | |
| 268 | #define Cluster2Sector( ulCluster ) (( ULONG )( pVolInfo->ulStartOfData + \ |
| 269 | (( ULONG )( ulCluster ) - 2) * pVolInfo->BootSect.bpb.SectorsPerCluster )) |
| 270 | |
| 271 | #define Sector2Cluster( ulSector ) (( ULONG )((( ULONG )( ulSector ) - pVolInfo->ulStartOfData ) / \ |
| 272 | pVolInfo->BootSect.bpb.SectorsPerCluster + 2 )) |
| 273 | |
| 274 | /****************************************************************** |
| 275 | * |
| 276 | ******************************************************************/ |
| 277 | USHORTReadSector(PVOLINFOpVolInfo,ULONGulSector,USHORTnSectors,PCHARpbData,USHORTusIOMode) |
| 278 | { |
| 279 | INTrc; |
| 280 | USHORTusSectors; |
| 281 | PSZp; |
| 282 | USHORTusIndex; |
| 283 | PBYTEpbSectors; |
| 284 | BOOLfFromCache; |
| 285 | BOOLfSectorInCache; |
| 286 | USHORTusCBIndex; |
| 287 | |
| 288 | if(ulSector+nSectors-1>=pVolInfo->BootSect.bpb.BigTotalSectors) |
| 289 | { |
| 290 | FatalMessage("FAT32: ERROR: Sector %ld does not exist on disk %c:", |
| 291 | ulSector+nSectors-1,pVolInfo->bDrive+'A'); |
| 292 | returnERROR_SECTOR_NOT_FOUND; |
| 293 | } |
| 294 | |
| 295 | f32Parms.ulTotalReads+=nSectors; |
| 296 | |
| 297 | /* |
| 298 | See if all sectors are in cache |
| 299 | */ |
| 300 | fFromCache=TRUE; |
| 301 | p=pbData; |
| 302 | for(usIndex=0;usIndex<nSectors;usIndex++) |
| 303 | { |
| 304 | if(!IsSectorInCache(pVolInfo,ulSector+usIndex,p)) |
| 305 | { |
| 306 | fFromCache=FALSE; |
| 307 | break; |
| 308 | } |
| 309 | p+=SECTOR_SIZE; |
| 310 | } |
| 311 | /* |
| 312 | if all sectors were found in cache, we are done |
| 313 | */ |
| 314 | if(fFromCache) |
| 315 | return0; |
| 316 | |
| 317 | #if 0 |
| 318 | if (f32Parms.fMessageActive & LOG_CACHE) |
| 319 | { |
| 320 | if (ulSector > pVolInfo->ulStartOfData) |
| 321 | Message("Cluster %lu not found in cache!", |
| 322 | (ulSector - pVolInfo->ulStartOfData) / pVolInfo->BootSect.bpb.SectorsPerCluster + 2); |
| 323 | } |
| 324 | #endif |
| 325 | pbSectors=NULL; |
| 326 | if((ulSector>=pVolInfo->ulStartOfData)&& |
| 327 | !(usIOMode&DVIO_OPNCACHE)&&nSectors<pVolInfo->usRASectors) |
| 328 | { |
| 329 | usSectors=pVolInfo->usRASectors; |
| 330 | if(ulSector+usSectors>pVolInfo->BootSect.bpb.BigTotalSectors) |
| 331 | usSectors=(USHORT)(pVolInfo->BootSect.bpb.BigTotalSectors-ulSector); |
| 332 | pbSectors=malloc(usSectors*512); |
| 333 | } |
| 334 | if(!pbSectors) |
| 335 | { |
| 336 | pbSectors=pbData; |
| 337 | usSectors=nSectors; |
| 338 | } |
| 339 | |
| 340 | /* check bad cluster */ |
| 341 | if(ulSector>=pVolInfo->ulStartOfData) |
| 342 | { |
| 343 | ULONGulStartCluster=Sector2Cluster(ulSector); |
| 344 | ULONGulEndCluster=Sector2Cluster(ulSector+usSectors-1); |
| 345 | ULONGulNextCluster=0; |
| 346 | ULONGulCluster; |
| 347 | |
| 348 | for(ulCluster=ulStartCluster;ulCluster<=ulEndCluster;ulCluster++) |
| 349 | { |
| 350 | ulNextCluster=GetNextCluster(pVolInfo,ulCluster); |
| 351 | if(ulNextCluster==FAT_BAD_CLUSTER) |
| 352 | break; |
| 353 | } |
| 354 | |
| 355 | if(ulNextCluster==FAT_BAD_CLUSTER) |
| 356 | { |
| 357 | usSectors=(ulStartCluster!=ulCluster)? |
| 358 | (min((USHORT)(Cluster2Sector(ulCluster)-ulSector),usSectors)):0; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | usIOMode&=~DVIO_OPWRITE; |
| 363 | pVolInfo->ulLastDiskTime=GetCurTime(); |
| 364 | usWaitCount++; |
| 365 | rc=FSH_DOVOLIO(DVIO_OPREAD|usIOMode,DVIO_ALLACK,pVolInfo->hVBP,pbSectors,&usSectors,ulSector); |
| 366 | usWaitCount--; |
| 367 | if(rc) |
| 368 | { |
| 369 | CritMessage("FAT32: ReadSector of sector %ld (%d sectors) failed, rc = %u", |
| 370 | ulSector,usSectors,rc); |
| 371 | Message("ERROR: ReadSector of sector %ld (%d sectors) failed, rc = %u", |
| 372 | ulSector,usSectors,rc); |
| 373 | } |
| 374 | |
| 375 | /* |
| 376 | Store sector only in cache if we should |
| 377 | */ |
| 378 | if(!rc) |
| 379 | { |
| 380 | p=pbSectors; |
| 381 | for(usIndex=0;usIndex<usSectors;usIndex++) |
| 382 | { |
| 383 | /* |
| 384 | Was sector already in cache? |
| 385 | */ |
| 386 | fSectorInCache=fFindSector(ulSector+usIndex, |
| 387 | pVolInfo->bDrive, |
| 388 | &usCBIndex); |
| 389 | |
| 390 | switch(fSectorInCache) |
| 391 | { |
| 392 | /* |
| 393 | No, it wasn't. Store it if needed. |
| 394 | */ |
| 395 | caseFALSE: |
| 396 | if(!(usIOMode&DVIO_OPNCACHE)) |
| 397 | fStoreSector(pVolInfo,ulSector+usIndex,p,FALSE); |
| 398 | break; |
| 399 | caseTRUE: |
| 400 | /* |
| 401 | Yes it was. Get it if it was dirty since then it is different |
| 402 | from version on disk. |
| 403 | */ |
| 404 | if(rgfDirty[usCBIndex]) |
| 405 | vGetSectorFromCache(usCBIndex,p); |
| 406 | UnlockBuffer(pCacheBase+usCBIndex); |
| 407 | break; |
| 408 | } |
| 409 | p+=SECTOR_SIZE; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | if(!rc&&pbSectors!=pbData) |
| 414 | { |
| 415 | f32Parms.ulTotalRA+=usSectors>nSectors?(usSectors-nSectors):0; |
| 416 | memcpy(pbData,pbSectors,min(usSectors,nSectors)*512); |
| 417 | } |
| 418 | if(pbSectors!=pbData) |
| 419 | free(pbSectors); |
| 420 | |
| 421 | returnrc; |
| 422 | } |
| 423 | |
| 424 | /****************************************************************** |
| 425 | * |
| 426 | ******************************************************************/ |
| 427 | USHORTWriteSector(PVOLINFOpVolInfo,ULONGulSector,USHORTnSectors,PCHARpbData,USHORTusIOMode) |
| 428 | { |
| 429 | INTrc; |
| 430 | USHORTusSectors=nSectors; |
| 431 | PSZp; |
| 432 | USHORTusIndex; |
| 433 | BOOLfDirty; |
| 434 | BOOLfSectorInCache; |
| 435 | USHORTusCBIndex; |
| 436 | |
| 437 | if(pVolInfo->fWriteProtected) |
| 438 | returnERROR_WRITE_PROTECT; |
| 439 | |
| 440 | if(pVolInfo->fDiskClean) |
| 441 | MarkDiskStatus(pVolInfo,FALSE); |
| 442 | |
| 443 | if(ulSector+nSectors-1>=pVolInfo->BootSect.bpb.BigTotalSectors) |
| 444 | { |
| 445 | FatalMessage("FAT32: ERROR: Sector %ld does not exist on disk %c:", |
| 446 | ulSector+nSectors-1,pVolInfo->bDrive+'A'); |
| 447 | returnERROR_SECTOR_NOT_FOUND; |
| 448 | } |
| 449 | |
| 450 | fDirty=TRUE; |
| 451 | rc=0; |
| 452 | if(!f32Parms.fLW||(usIOMode&DVIO_OPWRTHRU)||(usIOMode&DVIO_OPNCACHE)) |
| 453 | { |
| 454 | if(f32Parms.fLW&&f32Parms.fMessageActive&LOG_CACHE) |
| 455 | Message("WriteSector: Writing sector thru"); |
| 456 | pVolInfo->ulLastDiskTime=GetCurTime(); |
| 457 | usWaitCount++; |
| 458 | rc=FSH_DOVOLIO(DVIO_OPWRITE|usIOMode,DVIO_ALLACK,pVolInfo->hVBP,pbData,&usSectors,ulSector); |
| 459 | usWaitCount--; |
| 460 | if(rc&&rc!=ERROR_WRITE_PROTECT) |
| 461 | CritMessage("FAT32: ERROR: WriteSector sector %ld (%d sectors) failed, rc = %u", |
| 462 | ulSector,nSectors,rc); |
| 463 | fDirty=FALSE; |
| 464 | } |
| 465 | |
| 466 | |
| 467 | if(!rc) |
| 468 | { |
| 469 | p=pbData; |
| 470 | for(usIndex=0;usIndex<nSectors;usIndex++) |
| 471 | { |
| 472 | fSectorInCache= |
| 473 | fFindSector(ulSector+usIndex,pVolInfo->bDrive,&usCBIndex); |
| 474 | switch(fSectorInCache) |
| 475 | { |
| 476 | caseFALSE: |
| 477 | if(!(usIOMode&DVIO_OPNCACHE)) |
| 478 | fStoreSector(pVolInfo,ulSector+usIndex,p,fDirty); |
| 479 | break; |
| 480 | caseTRUE: |
| 481 | { |
| 482 | BOOLfIdent=FALSE; |
| 483 | |
| 484 | if(fDirty) |
| 485 | { |
| 486 | PCACHEpCache; |
| 487 | |
| 488 | pCache=GetAddress(usCBIndex); |
| 489 | fIdent=memcmp(p,pCache->bSector,SECTOR_SIZE)==0; |
| 490 | } |
| 491 | |
| 492 | if(!fIdent) |
| 493 | vReplaceSectorInCache(usCBIndex,p,fDirty); |
| 494 | UnlockBuffer(pCacheBase+usCBIndex); |
| 495 | break; |
| 496 | } |
| 497 | } |
| 498 | p+=SECTOR_SIZE; |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | returnrc; |
| 503 | } |
| 504 | |
| 505 | |
| 506 | |
| 507 | /****************************************************************** |
| 508 | * |
| 509 | ******************************************************************/ |
| 510 | BOOLIsSectorInCache(PVOLINFOpVolInfo,ULONGulSector,PBYTEpbSector) |
| 511 | { |
| 512 | USHORTusIndex; |
| 513 | |
| 514 | if(!fFindSector(ulSector,pVolInfo->bDrive,&usIndex)) |
| 515 | returnFALSE; |
| 516 | f32Parms.ulTotalHits++; |
| 517 | vGetSectorFromCache(usIndex,pbSector); |
| 518 | UnlockBuffer(pCacheBase+usIndex); |
| 519 | returnTRUE; |
| 520 | } |
| 521 | |
| 522 | /****************************************************************** |
| 523 | * |
| 524 | ******************************************************************/ |
| 525 | VOIDvGetSectorFromCache(USHORTusCBIndex,PBYTEpbSector) |
| 526 | { |
| 527 | PCACHEBASEpBase; |
| 528 | PCACHEpCache; |
| 529 | |
| 530 | pBase=pCacheBase+usCBIndex; |
| 531 | |
| 532 | pCache=GetAddress(usCBIndex); |
| 533 | memcpy(pbSector,pCache->bSector,512); |
| 534 | |
| 535 | pBase->ulAccessTime=GetCurTime(); |
| 536 | UpdateChain(usCBIndex); |
| 537 | |
| 538 | return; |
| 539 | } |
| 540 | |
| 541 | /****************************************************************** |
| 542 | * |
| 543 | ******************************************************************/ |
| 544 | VOIDUpdateChain(USHORTusCBIndex) |
| 545 | { |
| 546 | PCACHEBASE2pBase2; |
| 547 | |
| 548 | /* |
| 549 | Is entry already the newest ? |
| 550 | */ |
| 551 | if(usNewestEntry==usCBIndex) |
| 552 | return; |
| 553 | |
| 554 | pBase2=pCacheBase2+usCBIndex; |
| 555 | /* |
| 556 | Remove entry from current position in chain |
| 557 | */ |
| 558 | if(pBase2->usOlder!=0xFFFF) |
| 559 | pCacheBase2[pBase2->usOlder].usNewer=pBase2->usNewer; |
| 560 | if(pBase2->usNewer!=0xFFFF) |
| 561 | pCacheBase2[pBase2->usNewer].usOlder=pBase2->usOlder; |
| 562 | |
| 563 | /* |
| 564 | Update the oldest if this entry was the oldest |
| 565 | */ |
| 566 | |
| 567 | if(usOldestEntry==0xFFFF) |
| 568 | usOldestEntry=usCBIndex; |
| 569 | elseif(usOldestEntry==usCBIndex) |
| 570 | usOldestEntry=pBase2->usNewer; |
| 571 | |
| 572 | /* |
| 573 | Update base itself |
| 574 | */ |
| 575 | pBase2->usOlder=usNewestEntry; |
| 576 | if(usNewestEntry!=0xFFFF) |
| 577 | pCacheBase2[usNewestEntry].usNewer=usCBIndex; |
| 578 | usNewestEntry=usCBIndex; |
| 579 | pBase2->usNewer=0xFFFF; |
| 580 | } |
| 581 | |
| 582 | #if 1 |
| 583 | #define WAIT_THRESHOLD |
| 584 | #endif |
| 585 | /****************************************************************** |
| 586 | * |
| 587 | ******************************************************************/ |
| 588 | BOOLfStoreSector(PVOLINFOpVolInfo,ULONGulSector,PBYTEpbSector,BOOLfDirty) |
| 589 | { |
| 590 | USHORTusSlot; |
| 591 | USHORTusCBIndex; |
| 592 | PCACHEBASEpBase; |
| 593 | PCACHEBASE2pBase2; |
| 594 | USHORTusCount; |
| 595 | |
| 596 | if(!f32Parms.usCacheSize) |
| 597 | returnFALSE; |
| 598 | |
| 599 | pBase=NULL; |
| 600 | if(f32Parms.usCacheUsed<f32Parms.usCacheSize) |
| 601 | { |
| 602 | usCBIndex=f32Parms.usCacheUsed; |
| 603 | f32Parms.usCacheUsed++; |
| 604 | |
| 605 | pBase=pCacheBase+usCBIndex; |
| 606 | LockBuffer(pBase); |
| 607 | |
| 608 | usSlot=(USHORT)(ulSector%MAX_SLOTS); |
| 609 | pBase->usNext=rgSlot[usSlot]; |
| 610 | rgSlot[usSlot]=usCBIndex; |
| 611 | |
| 612 | pBase->ulSector=ulSector; |
| 613 | pBase->bDrive=pVolInfo->bDrive; |
| 614 | |
| 615 | vReplaceSectorInCache(usCBIndex,pbSector,fDirty); |
| 616 | UnlockBuffer(pBase); |
| 617 | } |
| 618 | else |
| 619 | { |
| 620 | PCACHEBASEpWork; |
| 621 | USHORTusIndex; |
| 622 | |
| 623 | if(usOldestEntry==0xFFFF) |
| 624 | FatalMessage("FAT32: No Oldest entry found!"); |
| 625 | |
| 626 | if(usRQInUse<usRQCount&& |
| 627 | #ifdef WAIT_THRESHOLD |
| 628 | f32Parms.usDirtySectors>=f32Parms.usDirtyTreshold) |
| 629 | #else |
| 630 | f32Parms.usDirtySectors-f32Parms.usPendingFlush>f32Parms.usDirtyTreshold) |
| 631 | #endif |
| 632 | { |
| 633 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 634 | f32Parms.fMessageActive&LOG_WAIT) |
| 635 | Message("ProcRun on EmergencyFlush"); |
| 636 | |
| 637 | usWaitCount++; |
| 638 | DevHelp_ProcRun((ULONG)DoEmergencyFlush,&usCount); |
| 639 | DevHelp_TCYield(); |
| 640 | usWaitCount--; |
| 641 | |
| 642 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 643 | f32Parms.fMessageActive&LOG_WAIT) |
| 644 | Message("continuing after ProcRun..."); |
| 645 | |
| 646 | #ifdef WAIT_THRESHOLD |
| 647 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 648 | f32Parms.fMessageActive&LOG_WAIT) |
| 649 | Message("waiting for dirty sectors to be less than threshold..."); |
| 650 | |
| 651 | _disable(); |
| 652 | while(f32Parms.usDirtySectors>=f32Parms.usDirtyTreshold) |
| 653 | { |
| 654 | DevHelp_ProcBlock((ULONG)&f32Parms.usDirtySectors,1000L,1); |
| 655 | _disable(); |
| 656 | } |
| 657 | _enable(); |
| 658 | #endif |
| 659 | } |
| 660 | |
| 661 | /* |
| 662 | find the oldest non dirty, not locked, not pending sector in cache |
| 663 | */ |
| 664 | |
| 665 | fStoreRetry: |
| 666 | |
| 667 | usCBIndex=0xFFFF; |
| 668 | if(f32Parms.usDirtySectors<f32Parms.usCacheSize) |
| 669 | { |
| 670 | usCBIndex=usOldestEntry; |
| 671 | while(usCBIndex!=0xFFFF) |
| 672 | { |
| 673 | if(!rgfDirty[usCBIndex]) |
| 674 | { |
| 675 | pBase=pCacheBase+usCBIndex; |
| 676 | if(!pBase->fLocked) |
| 677 | { |
| 678 | LockBuffer(pBase); |
| 679 | if(!rgfDirty[usCBIndex]) |
| 680 | break; |
| 681 | UnlockBuffer(pBase); |
| 682 | } |
| 683 | } |
| 684 | pBase2=pCacheBase2+usCBIndex; |
| 685 | usCBIndex=pBase2->usNewer; |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | no available sectors and at least one pending requestlist |
| 691 | lets wait for at least one requestlist to finish |
| 692 | */ |
| 693 | if(usCBIndex==0xFFFF&&usRQInUse) |
| 694 | { |
| 695 | USHORTusInUse=usRQInUse; |
| 696 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 697 | f32Parms.fMessageActive&LOG_WAIT) |
| 698 | Message("All Sectors Dirty, waiting for a requestlist for finish (%u pending flush)",f32Parms.usPendingFlush); |
| 699 | |
| 700 | usWaitCount++; |
| 701 | _disable(); |
| 702 | while(usRQInUse==usInUse) |
| 703 | { |
| 704 | DevHelp_ProcBlock((ULONG)GetRequestList,1000L,1); |
| 705 | _disable(); |
| 706 | } |
| 707 | _enable(); |
| 708 | usWaitCount--; |
| 709 | |
| 710 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 711 | f32Parms.fMessageActive&LOG_WAIT) |
| 712 | Message("Done waiting, still %u lists in use",usRQInUse); |
| 713 | |
| 714 | gotofStoreRetry; |
| 715 | } |
| 716 | |
| 717 | if(usCBIndex==0xFFFF) |
| 718 | { |
| 719 | /* |
| 720 | No non-dirty sector was found, thus: |
| 721 | find oldest not locked, not pending entry |
| 722 | */ |
| 723 | usCBIndex=usOldestEntry; |
| 724 | usCount=0; |
| 725 | while(usCBIndex!=0xFFFF) |
| 726 | { |
| 727 | pBase=pCacheBase+usCBIndex; |
| 728 | if(pBase->fLocked) |
| 729 | usCount++; |
| 730 | if(!pBase->fLocked) |
| 731 | { |
| 732 | LockBuffer(pBase); |
| 733 | break; |
| 734 | } |
| 735 | pBase2=pCacheBase2+usCBIndex; |
| 736 | usCBIndex=pBase2->usNewer; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | if(usCBIndex==0xFFFF) |
| 741 | { |
| 742 | BOOLfMsg=f32Parms.fMessageActive; |
| 743 | CritMessage("FAT32:No free sectors in cache! (run MONITOR now!)"); |
| 744 | Message("ERROR: fStoreSector - No sectors available!"); |
| 745 | Message(" %u sectors are locked",usCount); |
| 746 | Message(" %u sectors are pending flush",f32Parms.usPendingFlush); |
| 747 | Message(" %u sectors are dirty",f32Parms.usDirtySectors); |
| 748 | f32Parms.fMessageActive=fMsg; |
| 749 | Yield(); |
| 750 | gotofStoreRetry; |
| 751 | } |
| 752 | |
| 753 | /* |
| 754 | Write old entry if needed |
| 755 | */ |
| 756 | |
| 757 | if(rgfDirty[usCBIndex]) |
| 758 | { |
| 759 | if(f32Parms.fMessageActive&LOG_CACHE|| |
| 760 | f32Parms.fMessageActive&LOG_WAIT) |
| 761 | Message("fStoreSector: PROBLEM: Oldest is dirty! (%u, %u)", |
| 762 | f32Parms.usDirtySectors,f32Parms.usPendingFlush); |
| 763 | WriteCacheSector(NULL,usCBIndex,TRUE); |
| 764 | } |
| 765 | |
| 766 | /* |
| 767 | Remove entry from slot chain |
| 768 | */ |
| 769 | |
| 770 | usSlot=(USHORT)(pBase->ulSector%MAX_SLOTS); |
| 771 | usIndex=rgSlot[usSlot]; |
| 772 | if(usIndex==usCBIndex) |
| 773 | rgSlot[usSlot]=pBase->usNext; |
| 774 | else |
| 775 | { |
| 776 | pWork=NULL; |
| 777 | while(usIndex!=FREE_SLOT) |
| 778 | { |
| 779 | pWork=pCacheBase+usIndex; |
| 780 | if(pWork->usNext==usCBIndex) |
| 781 | break; |
| 782 | usIndex=pWork->usNext; |
| 783 | } |
| 784 | if(usIndex==FREE_SLOT) |
| 785 | FatalMessage("FAT32: Store: Oldest entry not found in slot chain!"); |
| 786 | pWork->usNext=pBase->usNext; |
| 787 | } |
| 788 | |
| 789 | usSlot=(USHORT)(ulSector%MAX_SLOTS); |
| 790 | pBase->usNext=rgSlot[usSlot]; |
| 791 | rgSlot[usSlot]=usCBIndex; |
| 792 | |
| 793 | pBase->ulSector=ulSector; |
| 794 | pBase->bDrive=pVolInfo->bDrive; |
| 795 | vReplaceSectorInCache(usCBIndex,pbSector,fDirty); |
| 796 | UnlockBuffer(pBase); |
| 797 | } |
| 798 | |
| 799 | returnTRUE; |
| 800 | } |
| 801 | |
| 802 | /****************************************************************** |
| 803 | * |
| 804 | ******************************************************************/ |
| 805 | VOIDvReplaceSectorInCache(USHORTusCBIndex,PBYTEpbSector,BOOLfDirty) |
| 806 | { |
| 807 | PCACHEBASEpBase; |
| 808 | PCACHEpCache; |
| 809 | #ifdef WAIT_THRESHOLD |
| 810 | USHORTusCount; |
| 811 | #endif |
| 812 | |
| 813 | pBase=pCacheBase+usCBIndex; |
| 814 | |
| 815 | if(!rgfDirty[usCBIndex]&&fDirty) |
| 816 | { |
| 817 | f32Parms.usDirtySectors++; |
| 818 | pBase->ulCreateTime=GetCurTime(); |
| 819 | } |
| 820 | elseif(rgfDirty[usCBIndex]&&!fDirty) |
| 821 | { |
| 822 | f32Parms.usDirtySectors--; |
| 823 | #ifdef WAIT_THRESHOLD |
| 824 | DevHelp_ProcRun((ULONG)&f32Parms.usDirtySectors,&usCount); |
| 825 | #endif |
| 826 | } |
| 827 | rgfDirty[usCBIndex]=fDirty; |
| 828 | pCache=GetAddress(usCBIndex); |
| 829 | memcpy(pCache->bSector,pbSector,SECTOR_SIZE); |
| 830 | pBase->ulAccessTime=GetCurTime(); |
| 831 | UpdateChain(usCBIndex); |
| 832 | return; |
| 833 | } |
| 834 | /****************************************************************** |
| 835 | * |
| 836 | ******************************************************************/ |
| 837 | PVOIDGetAddress(ULONGulEntry) |
| 838 | { |
| 839 | ULONGulOffset; |
| 840 | USHORTusSel; |
| 841 | |
| 842 | ulOffset=ulEntry*sizeof(CACHE); |
| 843 | usSel=(USHORT)(ulOffset/0x10000); |
| 844 | |
| 845 | ulOffset=ulOffset%0x10000; |
| 846 | |
| 847 | return(PVOID)MAKEP(rgCacheSel[usSel],(USHORT)ulOffset); |
| 848 | } |
| 849 | |
| 850 | /****************************************************************** |
| 851 | * |
| 852 | ******************************************************************/ |
| 853 | PVOIDGetPhysAddr(PRQLISTpRQ,ULONGulEntry) |
| 854 | { |
| 855 | ULONGulOffset; |
| 856 | USHORTusEntry; |
| 857 | |
| 858 | ulOffset=ulEntry*sizeof(CACHE); |
| 859 | usEntry=(USHORT)(ulOffset/PAGE_SIZE); |
| 860 | |
| 861 | ulOffset=ulOffset%PAGE_SIZE; |
| 862 | |
| 863 | return(PVOID)(pRQ->rgPhys[usEntry]+ulOffset); |
| 864 | } |
| 865 | |
| 866 | /****************************************************************** |
| 867 | * |
| 868 | ******************************************************************/ |
| 869 | BOOLfFindSector(ULONGulSector,BYTEbDrive,PUSHORTpusIndex) |
| 870 | { |
| 871 | PCACHEBASEpBase; |
| 872 | USHORTusCBIndex; |
| 873 | |
| 874 | if(!f32Parms.usCacheUsed) |
| 875 | returnFALSE; |
| 876 | |
| 877 | usCBIndex=rgSlot[(USHORT)(ulSector%MAX_SLOTS)]; |
| 878 | while(usCBIndex!=FREE_SLOT) |
| 879 | { |
| 880 | pBase=pCacheBase+usCBIndex; |
| 881 | if(pBase->ulSector==ulSector&&pBase->bDrive==bDrive) |
| 882 | { |
| 883 | LockBuffer(pBase); |
| 884 | if(pBase->ulSector==ulSector&&pBase->bDrive==bDrive) |
| 885 | { |
| 886 | *pusIndex=usCBIndex; |
| 887 | returnTRUE; |
| 888 | } |
| 889 | UnlockBuffer(pBase); |
| 890 | usCBIndex=rgSlot[(USHORT)(ulSector%MAX_SLOTS)]; |
| 891 | continue; |
| 892 | } |
| 893 | usCBIndex=pBase->usNext; |
| 894 | } |
| 895 | returnFALSE; |
| 896 | } |
| 897 | |
| 898 | |
| 899 | /****************************************************************** |
| 900 | * |
| 901 | ******************************************************************/ |
| 902 | USHORTWriteCacheSector(PVOLINFOpVolInfo,USHORTusCBIndex,BOOLfSetTime) |
| 903 | { |
| 904 | staticBOOLfLocked=FALSE; |
| 905 | staticBYTEbSector[512]=""; |
| 906 | PCACHEBASEpBase; |
| 907 | USHORTrc; |
| 908 | USHORTusSectors; |
| 909 | USHORTusCount; |
| 910 | PCACHEpCache; |
| 911 | |
| 912 | pBase=pCacheBase+usCBIndex; |
| 913 | if(!rgfDirty[usCBIndex]) |
| 914 | { |
| 915 | if(pBase->fDiscard) |
| 916 | { |
| 917 | pBase->bDrive=0xFF; |
| 918 | pBase->fDiscard=OFF; |
| 919 | } |
| 920 | |
| 921 | return0; |
| 922 | } |
| 923 | |
| 924 | if(!pVolInfo) |
| 925 | pVolInfo=pGlobVolInfo; |
| 926 | |
| 927 | while(pVolInfo) |
| 928 | { |
| 929 | if(pVolInfo->bDrive==(BYTE)pBase->bDrive) |
| 930 | { |
| 931 | pCache=GetAddress(usCBIndex); |
| 932 | usSectors=1; |
| 933 | usWaitCount++; |
| 934 | |
| 935 | _disable(); |
| 936 | while(fLocked) |
| 937 | { |
| 938 | if(f32Parms.fMessageActive&LOG_WAIT) |
| 939 | Message("Waiting for WriteCacheSector!"); |
| 940 | DevHelp_ProcBlock((ULONG)WriteCacheSector,1000,1); |
| 941 | _disable(); |
| 942 | } |
| 943 | _enable(); |
| 944 | |
| 945 | usWaitCount--; |
| 946 | fLocked=TRUE; |
| 947 | |
| 948 | memcpy(bSector,pCache->bSector,512); |
| 949 | rc=FSH_DOVOLIO(DVIO_OPWRITE,DVIO_ALLACK, |
| 950 | pVolInfo->hVBP,bSector,&usSectors,pBase->ulSector); |
| 951 | |
| 952 | fLocked=FALSE; |
| 953 | DevHelp_ProcRun((ULONG)WriteCacheSector,&usCount); |
| 954 | |
| 955 | if(!rc||rc==ERROR_WRITE_PROTECT) |
| 956 | { |
| 957 | if(pBase->fDiscard) |
| 958 | { |
| 959 | pBase->bDrive=0xFF; |
| 960 | pBase->fDiscard=OFF; |
| 961 | } |
| 962 | |
| 963 | rgfDirty[usCBIndex]=FALSE; |
| 964 | f32Parms.usDirtySectors--; |
| 965 | #ifdef WAIT_THRESHOLD |
| 966 | DevHelp_ProcRun((ULONG)&f32Parms.usDirtySectors,&usCount); |
| 967 | #endif |
| 968 | |
| 969 | if(fSetTime) |
| 970 | pVolInfo->ulLastDiskTime=GetCurTime(); |
| 971 | } |
| 972 | else |
| 973 | CritMessage("FAT32: Error %u in WriteCacheSector",rc); |
| 974 | returnrc; |
| 975 | } |
| 976 | pVolInfo=(PVOLINFO)pVolInfo->pNextVolInfo; |
| 977 | } |
| 978 | |
| 979 | FatalMessage("FAT32: WriteCacheSector: VOLINFO not found!"); |
| 980 | return1; |
| 981 | } |
| 982 | |
| 983 | |
| 984 | /****************************************************************** |
| 985 | * |
| 986 | ******************************************************************/ |
| 987 | VOIDDoEmergencyFlush(PLWOPTSpOptions) |
| 988 | { |
| 989 | #if 0 |
| 990 | USHORT usIndex; |
| 991 | #endif |
| 992 | USHORTrc; |
| 993 | |
| 994 | while(!f32Parms.fInShutDown&&!pOptions->fTerminate) |
| 995 | { |
| 996 | _disable(); |
| 997 | rc=WAIT_TIMED_OUT; |
| 998 | while(!f32Parms.fInShutDown&&!pOptions->fTerminate&& |
| 999 | rc==WAIT_TIMED_OUT) |
| 1000 | /* f32Parms.usDirtySectors - f32Parms.usPendingFlush <= f32Parms.usDirtyTreshold */ |
| 1001 | { |
| 1002 | rc=DevHelp_ProcBlock((ULONG)DoEmergencyFlush,5000L,1); |
| 1003 | _disable(); |
| 1004 | } |
| 1005 | _enable(); |
| 1006 | if(f32Parms.fInShutDown||pOptions->fTerminate) |
| 1007 | break; |
| 1008 | #if 0 |
| 1009 | for (usIndex = 0; usIndex < usRQCount; usIndex++) |
| 1010 | { |
| 1011 | if (!rgRQ[usIndex].fBusy) |
| 1012 | break; |
| 1013 | } |
| 1014 | if (usIndex == usRQCount) |
| 1015 | continue; |
| 1016 | #endif |
| 1017 | |
| 1018 | usEmergencyFlush(); |
| 1019 | FSH_IOBOOST(); |
| 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | /****************************************************************** |
| 1024 | * |
| 1025 | ******************************************************************/ |
| 1026 | USHORTusFlushAll(VOID) |
| 1027 | { |
| 1028 | PVOLINFOpVolInfo=pGlobVolInfo; |
| 1029 | USHORTrc; |
| 1030 | |
| 1031 | while(pVolInfo) |
| 1032 | { |
| 1033 | rc=usFlushVolume(pVolInfo,FLUSH_DISCARD,TRUE,PRIO_URGENT); |
| 1034 | pVolInfo=(PVOLINFO)pVolInfo->pNextVolInfo; |
| 1035 | } |
| 1036 | return0; |
| 1037 | } |
| 1038 | |
| 1039 | /****************************************************************** |
| 1040 | * |
| 1041 | ******************************************************************/ |
| 1042 | VOIDDoLW(PVOLINFOpVolInfo,PLWOPTSpOptions) |
| 1043 | { |
| 1044 | BYTEbPriority; |
| 1045 | LONGlWait; |
| 1046 | |
| 1047 | Message("DoLW started"); |
| 1048 | |
| 1049 | lWait=f32Parms.ulDiskIdle; |
| 1050 | _disable(); |
| 1051 | while(!f32Parms.fInShutDown&&!pOptions->fTerminate) |
| 1052 | { |
| 1053 | DevHelp_ProcBlock((ULONG)DoLW,lWait,1); |
| 1054 | Yield(); |
| 1055 | if((f32Parms.usDirtySectors==f32Parms.usPendingFlush)||usWaitCount) |
| 1056 | { |
| 1057 | lWait=f32Parms.ulDiskIdle; |
| 1058 | _disable(); |
| 1059 | continue; |
| 1060 | } |
| 1061 | lWait=5; |
| 1062 | |
| 1063 | if(f32Parms.fLW) |
| 1064 | { |
| 1065 | switch(pOptions->bLWPrio) |
| 1066 | { |
| 1067 | case1: |
| 1068 | bPriority=PRIO_LAZY_WRITE; |
| 1069 | break; |
| 1070 | |
| 1071 | case2: |
| 1072 | bPriority=PRIO_BACKGROUND_USER; |
| 1073 | break; |
| 1074 | |
| 1075 | case3: |
| 1076 | bPriority=PRIO_FOREGROUND_USER; |
| 1077 | break; |
| 1078 | |
| 1079 | default: |
| 1080 | bPriority=PRIO_PAGER_HIGH; |
| 1081 | break; |
| 1082 | } |
| 1083 | |
| 1084 | pVolInfo=pGlobVolInfo; |
| 1085 | while(pVolInfo) |
| 1086 | { |
| 1087 | ULONGulTime=GetCurTime(); |
| 1088 | |
| 1089 | if(ulTime<pVolInfo->ulLastDiskTime|| |
| 1090 | pVolInfo->ulLastDiskTime+f32Parms.ulDiskIdle<=ulTime) |
| 1091 | |
| 1092 | usFlushVolume(pVolInfo,FLUSH_RETAIN,FALSE,bPriority); |
| 1093 | pVolInfo=(PVOLINFO)pVolInfo->pNextVolInfo; |
| 1094 | } |
| 1095 | } |
| 1096 | _disable(); |
| 1097 | } |
| 1098 | _enable(); |
| 1099 | |
| 1100 | f32Parms.fLW=FALSE; |
| 1101 | usFlushAll(); |
| 1102 | Message("DoLW Stopped, Lazy writing also"); |
| 1103 | } |
| 1104 | |
| 1105 | #if 0 |
| 1106 | #define WAIT_PENDINGFLUSH |
| 1107 | #endif |
| 1108 | |
| 1109 | /****************************************************************** |
| 1110 | * |
| 1111 | ******************************************************************/ |
| 1112 | USHORTusFlushVolume(PVOLINFOpVolInfo,USHORTusFlag,BOOLfFlushAll,BYTEbPriority) |
| 1113 | { |
| 1114 | USHORTusCBIndex=0; |
| 1115 | PCACHEBASEpBase; |
| 1116 | PCACHEBASE2pBase2; |
| 1117 | USHORTusCount; |
| 1118 | ULONGulCurTime=GetCurTime(); |
| 1119 | PRQLISTpRQ; |
| 1120 | |
| 1121 | if(!f32Parms.usCacheUsed) |
| 1122 | return0; |
| 1123 | |
| 1124 | if(usFlag==FLUSH_DISCARD) |
| 1125 | { |
| 1126 | /* Wait to flush pending dirty sectors completely */ |
| 1127 | #ifndef WAIT_PENDINGFLUSH |
| 1128 | _disable(); |
| 1129 | while(usRQInUse) |
| 1130 | { |
| 1131 | DevHelp_ProcBlock((ULONG)GetRequestList,1000L,1); |
| 1132 | _disable(); |
| 1133 | } |
| 1134 | _enable(); |
| 1135 | #else |
| 1136 | _disable(); |
| 1137 | while(f32Parms.usPendingFlush) |
| 1138 | { |
| 1139 | DevHelp_ProcBlock((ULONG)&f32Parms.usPendingFlush,1000L,1); |
| 1140 | _disable(); |
| 1141 | } |
| 1142 | _enable(); |
| 1143 | #endif |
| 1144 | } |
| 1145 | elseif(f32Parms.usDirtySectors==f32Parms.usPendingFlush) |
| 1146 | return0; |
| 1147 | |
| 1148 | usCount=0; |
| 1149 | |
| 1150 | if(!fFlushAll) |
| 1151 | { |
| 1152 | pRQ=NULL; |
| 1153 | usCBIndex=usOldestEntry; |
| 1154 | while(usCBIndex!=0xFFFF&&!usWaitCount) |
| 1155 | { |
| 1156 | if(pRQ&&pRQ->rlh.Count>=MAXRQENTRIES) |
| 1157 | break; |
| 1158 | |
| 1159 | pBase2=pCacheBase2+usCBIndex; |
| 1160 | pBase=pCacheBase+usCBIndex; |
| 1161 | |
| 1162 | if(pBase->bDrive==pVolInfo->bDrive&& |
| 1163 | (ulCurTime-pBase->ulCreateTime>=f32Parms.ulMaxAge|| |
| 1164 | ulCurTime-pBase->ulAccessTime>=f32Parms.ulBufferIdle)) |
| 1165 | { |
| 1166 | if(rgfDirty[usCBIndex]) |
| 1167 | { |
| 1168 | if(!pBase->fLocked&&!pBase->fFlushPending) |
| 1169 | { |
| 1170 | if(!pRQ) |
| 1171 | pRQ=GetRequestList(pVolInfo,TRUE); |
| 1172 | |
| 1173 | LockBuffer(pBase); |
| 1174 | if(usFlag==FLUSH_DISCARD) |
| 1175 | pBase->fDiscard=SET; |
| 1176 | if(!pRQ||!fAddToRLH(pRQ,usCBIndex,bPriority)) |
| 1177 | { |
| 1178 | WriteCacheSector(pVolInfo,usCBIndex,FALSE); |
| 1179 | UnlockBuffer(pBase); |
| 1180 | } |
| 1181 | usCount++; |
| 1182 | } |
| 1183 | } |
| 1184 | elseif(usFlag==FLUSH_DISCARD) |
| 1185 | { |
| 1186 | LockBuffer(pBase); |
| 1187 | pBase->bDrive=0xFF; |
| 1188 | pBase->fDiscard=OFF; |
| 1189 | UnlockBuffer(pBase); |
| 1190 | } |
| 1191 | } |
| 1192 | |
| 1193 | usCBIndex=pBase2->usNewer; |
| 1194 | } |
| 1195 | if(f32Parms.fMessageActive&LOG_CACHE&&usCount>0) |
| 1196 | Message("%u sectors LAZY flushed, still %u dirty",usCount,f32Parms.usDirtySectors); |
| 1197 | |
| 1198 | if(pRQ) |
| 1199 | vCallStrategy(pVolInfo,pRQ); |
| 1200 | return0; |
| 1201 | } |
| 1202 | |
| 1203 | if(f32Parms.fMessageActive&LOG_CACHE) |
| 1204 | Message("usFlushVolume ALL"); |
| 1205 | |
| 1206 | pRQ=GetRequestList(pVolInfo,TRUE); |
| 1207 | usCBIndex=0; |
| 1208 | for(usCBIndex=0;(f32Parms.usDirtySectors||usFlag==FLUSH_DISCARD)&& |
| 1209 | usCBIndex<f32Parms.usCacheUsed;usCBIndex++) |
| 1210 | { |
| 1211 | pBase=pCacheBase+usCBIndex; |
| 1212 | if(pVolInfo->bDrive==(BYTE)pBase->bDrive) |
| 1213 | { |
| 1214 | if(rgfDirty[usCBIndex]) |
| 1215 | { |
| 1216 | if(pRQ&&pRQ->rlh.Count>=MAXRQENTRIES) |
| 1217 | { |
| 1218 | vCallStrategy(pVolInfo,pRQ); |
| 1219 | pRQ=GetRequestList(pVolInfo,TRUE); |
| 1220 | } |
| 1221 | |
| 1222 | LockBuffer(pBase); |
| 1223 | if(usFlag==FLUSH_DISCARD) |
| 1224 | pBase->fDiscard=SET; |
| 1225 | if(!pRQ||!fAddToRLH(pRQ,usCBIndex,PRIO_URGENT)) |
| 1226 | { |
| 1227 | WriteCacheSector(pVolInfo,usCBIndex,FALSE); |
| 1228 | UnlockBuffer(pBase); |
| 1229 | } |
| 1230 | usCount++; |
| 1231 | } |
| 1232 | elseif(usFlag==FLUSH_DISCARD) |
| 1233 | { |
| 1234 | LockBuffer(pBase); |
| 1235 | pBase->bDrive=0xFF; |
| 1236 | pBase->fDiscard=OFF; |
| 1237 | UnlockBuffer(pBase); |
| 1238 | } |
| 1239 | } |
| 1240 | } |
| 1241 | vCallStrategy(pVolInfo,pRQ); |
| 1242 | |
| 1243 | if(f32Parms.fMessageActive&LOG_CACHE) |
| 1244 | Message("%u sectors flushed, still %u dirty",usCount,f32Parms.usDirtySectors); |
| 1245 | return0; |
| 1246 | } |
| 1247 | |
| 1248 | /****************************************************************** |
| 1249 | * |
| 1250 | ******************************************************************/ |
| 1251 | USHORTusEmergencyFlush(VOID) |
| 1252 | { |
| 1253 | USHORTusCBIndex=0; |
| 1254 | PCACHEBASEpBase; |
| 1255 | PCACHEBASE2pBase2; |
| 1256 | USHORTusCount; |
| 1257 | PVOLINFOpVolInfo; |
| 1258 | PRQLISTpRQ; |
| 1259 | |
| 1260 | if(!f32Parms.usCacheUsed||(f32Parms.usDirtySectors==f32Parms.usPendingFlush)) |
| 1261 | return0; |
| 1262 | |
| 1263 | /* |
| 1264 | find the volinfo for the oldest entry |
| 1265 | */ |
| 1266 | pVolInfo=NULL; |
| 1267 | usCBIndex=usOldestEntry; |
| 1268 | while(usCBIndex!=0xFFFF) |
| 1269 | { |
| 1270 | pBase2=pCacheBase2+usCBIndex; |
| 1271 | pBase=pCacheBase+usCBIndex; |
| 1272 | if(rgfDirty[usCBIndex]&&!pBase->fFlushPending) |
| 1273 | { |
| 1274 | pVolInfo=pGlobVolInfo; |
| 1275 | while(pVolInfo) |
| 1276 | { |
| 1277 | if((BYTE)pBase->bDrive==pVolInfo->bDrive) |
| 1278 | break; |
| 1279 | pVolInfo=(PVOLINFO)(pVolInfo->pNextVolInfo); |
| 1280 | } |
| 1281 | if(!pVolInfo) |
| 1282 | FatalMessage("FAT32: Drive not found in emergency flush!"); |
| 1283 | break; |
| 1284 | } |
| 1285 | usCBIndex=pBase2->usNewer; |
| 1286 | } |
| 1287 | |
| 1288 | if(usCBIndex==0xFFFF) |
| 1289 | return0; |
| 1290 | |
| 1291 | if(!pVolInfo) |
| 1292 | return0; |
| 1293 | |
| 1294 | pRQ=GetRequestList(pVolInfo,TRUE); |
| 1295 | if(!pRQ) |
| 1296 | return0; |
| 1297 | |
| 1298 | usCount=0; |
| 1299 | while(usCBIndex!=0xFFFF&&usCount<MAXRQENTRIES) |
| 1300 | { |
| 1301 | pBase2=pCacheBase2+usCBIndex; |
| 1302 | pBase=pCacheBase+usCBIndex; |
| 1303 | if(rgfDirty[usCBIndex]&& |
| 1304 | pVolInfo->bDrive==(BYTE)pBase->bDrive&& |
| 1305 | !pBase->fLocked&&!pBase->fFlushPending) |
| 1306 | { |
| 1307 | LockBuffer(pBase); |
| 1308 | fAddToRLH(pRQ,usCBIndex,PRIO_URGENT); |
| 1309 | usCount++; |
| 1310 | } |
| 1311 | usCBIndex=pBase2->usNewer; |
| 1312 | } |
| 1313 | |
| 1314 | pVolInfo->ulLastDiskTime=GetCurTime(); |
| 1315 | |
| 1316 | if(f32Parms.fMessageActive&LOG_CACHE) |
| 1317 | Message("usEmergencyFlush: %u sectors flushed, still %u dirty",usCount,f32Parms.usDirtySectors); |
| 1318 | |
| 1319 | vCallStrategy(pVolInfo,pRQ); |
| 1320 | |
| 1321 | return0; |
| 1322 | } |
| 1323 | |
| 1324 | /****************************************************************** |
| 1325 | * |
| 1326 | ******************************************************************/ |
| 1327 | VOIDLockBuffer(PCACHEBASEpBase) |
| 1328 | { |
| 1329 | _disable(); |
| 1330 | usWaitCount++; |
| 1331 | while(pBase->fLocked) |
| 1332 | { |
| 1333 | if(f32Parms.fMessageActive&LOG_WAIT) |
| 1334 | Message("Waiting on locked buffer..."); |
| 1335 | DevHelp_ProcBlock((ULONG)pBase,1000,1); |
| 1336 | _disable(); |
| 1337 | if(!pBase->fLocked&&f32Parms.fMessageActive&LOG_WAIT) |
| 1338 | Message("Continuing after wait for locked buffer"); |
| 1339 | } |
| 1340 | usWaitCount--; |
| 1341 | pBase->fLocked=SET; |
| 1342 | _enable(); |
| 1343 | } |
| 1344 | |
| 1345 | /****************************************************************** |
| 1346 | * |
| 1347 | ******************************************************************/ |
| 1348 | VOIDUnlockBuffer(PCACHEBASEpBase) |
| 1349 | { |
| 1350 | USHORTusCount; |
| 1351 | |
| 1352 | pBase->fLocked=OFF; |
| 1353 | DevHelp_ProcRun((ULONG)pBase,&usCount); |
| 1354 | } |
| 1355 | |
| 1356 | /****************************************************************** |
| 1357 | * |
| 1358 | ******************************************************************/ |
| 1359 | PRQLISTGetRequestList(PVOLINFOpVolInfo,BOOLfWait) |
| 1360 | { |
| 1361 | PRQLISTpRQ; |
| 1362 | USHORTusIndex; |
| 1363 | |
| 1364 | if(!pVolInfo->pfnStrategy) |
| 1365 | returnNULL; |
| 1366 | |
| 1367 | pRQ=NULL; |
| 1368 | |
| 1369 | usWaitCount++; |
| 1370 | _disable(); |
| 1371 | while(!pRQ) |
| 1372 | { |
| 1373 | for(usIndex=0;usIndex<usRQCount;usIndex++) |
| 1374 | { |
| 1375 | if(!rgRQ[usIndex].fBusy) |
| 1376 | { |
| 1377 | pRQ=&rgRQ[usIndex]; |
| 1378 | pRQ->usNr=usIndex; |
| 1379 | break; |
| 1380 | } |
| 1381 | } |
| 1382 | |
| 1383 | if(!pRQ) |
| 1384 | { |
| 1385 | if(fWait) |
| 1386 | { |
| 1387 | if(f32Parms.fMessageActive&LOG_WAIT) |
| 1388 | Message("Waiting for a requestlist to become available"); |
| 1389 | DevHelp_ProcBlock((ULONG)GetRequestList,1000L,1); |
| 1390 | _disable(); |
| 1391 | } |
| 1392 | else |
| 1393 | { |
| 1394 | _enable(); |
| 1395 | if(f32Parms.fMessageActive&LOG_CACHE) |
| 1396 | Message("No RQ Buffers free!"); |
| 1397 | returnNULL; |
| 1398 | } |
| 1399 | } |
| 1400 | } |
| 1401 | _enable(); |
| 1402 | usWaitCount--; |
| 1403 | |
| 1404 | memset(&pRQ->rlh,0,sizeofpRQ->rlh); |
| 1405 | memset(pRQ->rgReq,0,sizeofpRQ->rgReq); |
| 1406 | pRQ->fBusy=TRUE; |
| 1407 | usRQInUse++; |
| 1408 | pRQ->rlh.Count=0; |
| 1409 | pRQ->rlh.Notify_Address=(PVOID)rlhNotify; |
| 1410 | pRQ->rlh.Request_Control=RLH_Notify_Done; |
| 1411 | pRQ->rlh.Block_Dev_Unit=pVolInfo->bUnit; |
| 1412 | returnpRQ; |
| 1413 | } |
| 1414 | |
| 1415 | /****************************************************************** |
| 1416 | * |
| 1417 | ******************************************************************/ |
| 1418 | BOOLfAddToRLH(PRQLISTpRQin,USHORTusCBIndex,BYTEbPriority) |
| 1419 | { |
| 1420 | _segmentrqBase; |
| 1421 | RQLIST_based(rqBase)*pRQ; |
| 1422 | RLH_based(rqBase)*pRLH; |
| 1423 | PB_based(rqBase)*pPB; |
| 1424 | SG_based(rqBase)*pSG; |
| 1425 | PCACHEBASEpBase; |
| 1426 | USHORTusEntry; |
| 1427 | PBYTEpTar; |
| 1428 | PCACHEpCache; |
| 1429 | |
| 1430 | if(!pRQin||pRQin->rlh.Count>=MAXRQENTRIES) |
| 1431 | returnFALSE; |
| 1432 | rqBase=SELECTOROF(pRQin); |
| 1433 | pRQ=(RQLIST_based(rqBase)*)OFFSETOF(pRQin); |
| 1434 | |
| 1435 | pBase=pCacheBase+usCBIndex; |
| 1436 | |
| 1437 | #ifdef SORT_RLH |
| 1438 | for(usEntry=0;usEntry<(USHORT)pRQ->rlh.Count;usEntry++) |
| 1439 | { |
| 1440 | pPB=&pRQ->rgReq[usEntry].pb; |
| 1441 | if(pBase->ulSector<pPB->Start_Block) |
| 1442 | break; |
| 1443 | } |
| 1444 | if(usEntry<(USHORT)pRQ->rlh.Count) |
| 1445 | { |
| 1446 | memmove(&pRQ->rgReq[usEntry+1], |
| 1447 | &pRQ->rgReq[usEntry], |
| 1448 | ((USHORT)pRQ->rlh.Count-usEntry)*sizeof(REQUEST)); |
| 1449 | } |
| 1450 | #else |
| 1451 | usEntry=(USHORT)pRQ->rlh.Count; |
| 1452 | #endif |
| 1453 | |
| 1454 | pRLH=&pRQ->rlh; |
| 1455 | pPB=&pRQ->rgReq[usEntry].pb; |
| 1456 | pSG=&pRQ->rgReq[usEntry].sg; |
| 1457 | |
| 1458 | pRQ->rgReq[usEntry].usCBIndex=usCBIndex; |
| 1459 | |
| 1460 | pPB->RqHdr.Length=RH_LAST_REQ; |
| 1461 | pPB->RqHdr.Old_Command=PB_REQ_LIST; |
| 1462 | pPB->RqHdr.Command_Code=PB_WRITE_X; |
| 1463 | pPB->RqHdr.Head_Offset=0; |
| 1464 | /* pPB->RqHdr.Req_Control = RH_NOTIFY_ERROR | RH_NOTIFY_DONE; */ |
| 1465 | pPB->RqHdr.Req_Control=RH_NOTIFY_ERROR; |
| 1466 | pPB->RqHdr.Priority=bPriority; |
| 1467 | pPB->RqHdr.Status=RH_NOT_QUEUED; |
| 1468 | pPB->RqHdr.Error_Code=0; |
| 1469 | pPB->RqHdr.Notify_Address=(PVOID)rhNotify; |
| 1470 | pPB->RqHdr.Hint_Pointer=0xFFFFFFFF; |
| 1471 | |
| 1472 | pPB->Start_Block=pBase->ulSector; |
| 1473 | pPB->Block_Count=1; |
| 1474 | pPB->Blocks_Xferred=0; |
| 1475 | pPB->RW_Flags=RW_Cache_Req; |
| 1476 | pPB->SG_Desc_Count=1; |
| 1477 | |
| 1478 | pSG->BufferPtr=GetPhysAddr(pRQ,pRQ->rlh.Count); |
| 1479 | pSG->BufferSize=SECTOR_SIZE; |
| 1480 | |
| 1481 | pTar=MAKEP(pRQ->Sel,usEntry*SECTOR_SIZE); |
| 1482 | pCache=GetAddress(usCBIndex); |
| 1483 | memcpy(pTar,pCache->bSector,SECTOR_SIZE); |
| 1484 | |
| 1485 | /* |
| 1486 | rgfDirty[usCBIndex] = FALSE; |
| 1487 | f32Parms.usDirtySectors--; |
| 1488 | */ |
| 1489 | |
| 1490 | pBase->fFlushPending=SET; |
| 1491 | f32Parms.usPendingFlush++; |
| 1492 | |
| 1493 | UnlockBuffer(pBase); |
| 1494 | |
| 1495 | pRQ->rlh.Count++; |
| 1496 | |
| 1497 | returnTRUE; |
| 1498 | } |
| 1499 | |
| 1500 | #pragma optimize("g", off) |
| 1501 | /****************************************************************** |
| 1502 | * |
| 1503 | ******************************************************************/ |
| 1504 | VOIDvCallStrategy(PVOLINFOpVolInfo,PRQLISTpRQin) |
| 1505 | { |
| 1506 | STRATFUNCpfnStrategy; |
| 1507 | USHORTusSeg; |
| 1508 | USHORTusOff; |
| 1509 | ULONGulIndex; |
| 1510 | |
| 1511 | _segmentrqBase; |
| 1512 | RQLIST_based(rqBase)*pRQ; |
| 1513 | RLH_based(rqBase)*pRLH; |
| 1514 | PB_based(rqBase)*pPB; |
| 1515 | |
| 1516 | if(!pRQin) |
| 1517 | return; |
| 1518 | |
| 1519 | rqBase=SELECTOROF(pRQin); |
| 1520 | pRQ=(RQLIST_based(rqBase)*)OFFSETOF(pRQin); |
| 1521 | |
| 1522 | if(f32Parms.fMessageActive&LOG_CACHE&&pRQ->rlh.Count) |
| 1523 | Message("vCallStrategy drive %c:, %lu sectors, RQ %u", |
| 1524 | pRQ->rlh.Block_Dev_Unit+'A', |
| 1525 | pRQ->rlh.Count, |
| 1526 | pRQ->usNr); |
| 1527 | |
| 1528 | if(!pRQ->rlh.Count) |
| 1529 | { |
| 1530 | USHORTusCount; |
| 1531 | |
| 1532 | pRQ->fBusy=FALSE; |
| 1533 | usRQInUse--; |
| 1534 | DevHelp_ProcRun((ULONG)GetRequestList,&usCount); |
| 1535 | return; |
| 1536 | } |
| 1537 | |
| 1538 | pRLH=&pRQ->rlh; |
| 1539 | if(pRQ->rlh.Count==1) |
| 1540 | pRQ->rlh.Lst_Status|=RLH_Single_Req; |
| 1541 | |
| 1542 | |
| 1543 | for(ulIndex=0;ulIndex<pRQ->rlh.Count;ulIndex++) |
| 1544 | { |
| 1545 | pPB=&pRQ->rgReq[ulIndex].pb; |
| 1546 | |
| 1547 | if(ulIndex+1<pRQ->rlh.Count) |
| 1548 | pPB->RqHdr.Length=sizeof(REQUEST); |
| 1549 | pPB->RqHdr.Head_Offset=(USHORT)pPB-(USHORT)pRLH; |
| 1550 | } |
| 1551 | |
| 1552 | usSeg=rqBase; |
| 1553 | usOff=(USHORT)pRQ+offsetof(RQLIST,rlh); |
| 1554 | |
| 1555 | pfnStrategy=pVolInfo->pfnStrategy; |
| 1556 | _asmmoves,usSeg; |
| 1557 | _asmmovbx,usOff; |
| 1558 | (*pfnStrategy)(); |
| 1559 | } |
| 1560 | |
| 1561 | /****************************************************************** |
| 1562 | * |
| 1563 | ******************************************************************/ |
| 1564 | VOIDrlhNotify(VOID) |
| 1565 | { |
| 1566 | PRQLISTpRQ; |
| 1567 | USHORTusCount; |
| 1568 | WORDESReg,BXReg; |
| 1569 | INTiStatus,iErrorStatus; |
| 1570 | ULONGulIndex; |
| 1571 | PREQUESTpRequest; |
| 1572 | |
| 1573 | |
| 1574 | _asmmovESReg,es |
| 1575 | _asmmovBXReg,bx |
| 1576 | |
| 1577 | pRQ=MAKEP(ESReg,BXReg-offsetof(RQLIST,rlh)); |
| 1578 | |
| 1579 | iStatus=pRQ->rlh.Lst_Status&0x0F; |
| 1580 | iErrorStatus=pRQ->rlh.Lst_Status&0xF0; |
| 1581 | |
| 1582 | if(iStatus==RLH_All_Req_Done) |
| 1583 | { |
| 1584 | switch(iErrorStatus) |
| 1585 | { |
| 1586 | caseRLH_No_Error: |
| 1587 | caseRLH_Rec_Error: |
| 1588 | pRequest=pRQ->rgReq; |
| 1589 | for(ulIndex=0;ulIndex<pRQ->rlh.Count;ulIndex++) |
| 1590 | { |
| 1591 | PCACHEBASEpBase=pCacheBase+pRequest->usCBIndex; |
| 1592 | |
| 1593 | if(pRequest->pb.RqHdr.Status&0x0F!=RH_DONE) |
| 1594 | FatalMessage("FAT32: rlhNotify received with not all sectors being done!"); |
| 1595 | |
| 1596 | if(pBase->ulSector==pRequest->pb.Start_Block) |
| 1597 | { |
| 1598 | if(rgfDirty[pRequest->usCBIndex]) |
| 1599 | { |
| 1600 | if(pBase->fDiscard) |
| 1601 | { |
| 1602 | pBase->bDrive=0xFF; |
| 1603 | pBase->fDiscard=OFF; |
| 1604 | } |
| 1605 | |
| 1606 | rgfDirty[pRequest->usCBIndex]=FALSE; |
| 1607 | f32Parms.usDirtySectors--; |
| 1608 | #ifdef WAIT_THRESHOLD |
| 1609 | DevHelp_ProcRun((ULONG)&f32Parms.usDirtySectors,&usCount); |
| 1610 | #endif |
| 1611 | } |
| 1612 | if(pBase->fFlushPending) |
| 1613 | { |
| 1614 | f32Parms.usPendingFlush--; |
| 1615 | #ifdef WAIT_PENDINGFLUSH |
| 1616 | DevHelp_ProcRun((ULONG)&f32Parms.usPendingFlush,&usCount); |
| 1617 | #endif |
| 1618 | pBase->fFlushPending=OFF; |
| 1619 | } |
| 1620 | } |
| 1621 | pRequest++; |
| 1622 | } |
| 1623 | break; |
| 1624 | |
| 1625 | default: |
| 1626 | CritMessage("FAT32: Fatal WRITE Error %X in rlhNotify!",iErrorStatus); |
| 1627 | break; |
| 1628 | } |
| 1629 | |
| 1630 | pRQ->fBusy=FALSE; |
| 1631 | usRQInUse--; |
| 1632 | DevHelp_ProcRun((ULONG)GetRequestList,&usCount); |
| 1633 | return; |
| 1634 | } |
| 1635 | |
| 1636 | switch(iErrorStatus) |
| 1637 | { |
| 1638 | caseRLH_No_Error: |
| 1639 | caseRLH_Rec_Error: |
| 1640 | return; |
| 1641 | |
| 1642 | default: |
| 1643 | CritMessage("FAT32: Fatal WRITE Error %X in rlhNotify!",iErrorStatus); |
| 1644 | pRQ->fBusy=FALSE; |
| 1645 | usRQInUse--; |
| 1646 | DevHelp_ProcRun((ULONG)GetRequestList,&usCount); |
| 1647 | break; |
| 1648 | } |
| 1649 | |
| 1650 | return; |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | /****************************************************************** |
| 1655 | * |
| 1656 | ******************************************************************/ |
| 1657 | VOIDrhNotify(VOID) |
| 1658 | { |
| 1659 | WORDESReg,BXReg; |
| 1660 | |
| 1661 | _asmmovESReg,es |
| 1662 | _asmmovBXReg,bx |
| 1663 | |
| 1664 | vCheckRequest(MAKEP(ESReg,BXReg)); |
| 1665 | } |
| 1666 | #pragma optimize("", on) |
| 1667 | |
| 1668 | /****************************************************************** |
| 1669 | * |
| 1670 | ******************************************************************/ |
| 1671 | VOIDvCheckRequest(PREQUESTpRequest) |
| 1672 | { |
| 1673 | PCACHEBASEpBase; |
| 1674 | INTstatus; |
| 1675 | INTerr_status; |
| 1676 | INTerr_code; |
| 1677 | #ifdef WAIT_THRESHOLD |
| 1678 | USHORTusCount; |
| 1679 | #endif |
| 1680 | |
| 1681 | if(pRequest->usCBIndex>f32Parms.usCacheUsed) |
| 1682 | InternalError("FAT32: usCBIndex is wrong in vCheckRequest!"); |
| 1683 | |
| 1684 | pBase=pCacheBase+pRequest->usCBIndex; |
| 1685 | |
| 1686 | if(pBase->ulSector!=pRequest->pb.Start_Block) |
| 1687 | { |
| 1688 | CritMessage("FAT32: Sectors do not match in rhNotify!"); |
| 1689 | return; |
| 1690 | } |
| 1691 | |
| 1692 | status=pRequest->pb.RqHdr.Status&0x0F; |
| 1693 | err_status=pRequest->pb.RqHdr.Status&0xF0; |
| 1694 | err_code=pRequest->pb.RqHdr.Error_Code; |
| 1695 | |
| 1696 | if(status==RH_DONE) |
| 1697 | { |
| 1698 | switch(err_status) |
| 1699 | { |
| 1700 | caseRH_NO_ERROR: |
| 1701 | caseRH_RECOV_ERROR: |
| 1702 | if(pBase->fDiscard) |
| 1703 | { |
| 1704 | pBase->bDrive=0xFF; |
| 1705 | pBase->fDiscard=OFF; |
| 1706 | } |
| 1707 | |
| 1708 | rgfDirty[pRequest->usCBIndex]=FALSE; |
| 1709 | f32Parms.usDirtySectors--; |
| 1710 | #ifdef WAIT_THRESHOLD |
| 1711 | DevHelp_ProcRun((ULONG)&f32Parms.usDirtySectors,&usCount); |
| 1712 | #endif |
| 1713 | break; |
| 1714 | default: |
| 1715 | CritMessage("FAT32: Error %X in rhNotify!",err_code); |
| 1716 | break; |
| 1717 | } |
| 1718 | |
| 1719 | if(pBase->fFlushPending) |
| 1720 | { |
| 1721 | f32Parms.usPendingFlush--; |
| 1722 | #ifdef WAIT_PENDINGFLUSH |
| 1723 | DevHelp_ProcRun((ULONG)&f32Parms.usPendingFlush,&usCount); |
| 1724 | #endif |
| 1725 | pBase->fFlushPending=OFF; |
| 1726 | } |
| 1727 | return; |
| 1728 | } |
| 1729 | |
| 1730 | switch(err_status) |
| 1731 | { |
| 1732 | /* |
| 1733 | In this case we should be notified later of the real status of the request. |
| 1734 | */ |
| 1735 | caseRH_NO_ERROR: |
| 1736 | caseRH_RECOV_ERROR: |
| 1737 | return; |
| 1738 | /* |
| 1739 | In this case there is no more chance ... |
| 1740 | */ |
| 1741 | default: |
| 1742 | if(pBase->fFlushPending) |
| 1743 | { |
| 1744 | f32Parms.usPendingFlush--; |
| 1745 | #ifdef WAIT_PENDINGFLUSH |
| 1746 | DevHelp_ProcRun((ULONG)&f32Parms.usPendingFlush,&usCount); |
| 1747 | #endif |
| 1748 | pBase->fFlushPending=OFF; |
| 1749 | } |
| 1750 | |
| 1751 | CritMessage("FAT32: Error %X in rhNotify!",err_code); |
| 1752 | break; |
| 1753 | } |
| 1754 | return; |
| 1755 | } |
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