Return to IOSCSIParallelCommand.cpp CVS log

Up to [Apple XNU] / XNU / iokit / Families / IOSCSIParallel

Annotation of XNU/iokit/Families/IOSCSIParallel/IOSCSIParallelCommand.cpp, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  *
        !            24:  * IOSCSIParallelCommand.cpp
        !            25:  *
        !            26:  */
        !            27: 
        !            28: #include <IOKit/IOSyncer.h>
        !            29: 
        !            30: #include <IOKit/scsi/IOSCSIParallelInterface.h>
        !            31: #include <libkern/OSAtomic.h>
        !            32: 
        !            33: #undef super
        !            34: #define super IOSCSICommand
        !            35: 
        !            36: OSDefineMetaClassAndStructors( IOSCSIParallelCommand, IOSCSICommand )
        !            37: OSDefineMetaClassAndAbstractStructors( IOSCSICommand, IOCDBCommand )
        !            38: OSDefineMetaClassAndAbstractStructors( IOCDBCommand, OSObject )
        !            39: 
        !            40: IOSCSIDevice *IOSCSIParallelCommand::getDevice(IOSCSIDevice *)
        !            41: {
        !            42:     return (IOSCSIDevice *)device;
        !            43: }
        !            44: 
        !            45: void *IOSCSIParallelCommand::getClientData()
        !            46: {
        !            47:     return clientData;
        !            48: }
        !            49: 
        !            50: void *IOSCSIParallelCommand::getCommandData()
        !            51: {
        !            52:     return commandPrivateData;
        !            53: }
        !            54: 
        !            55: UInt32 IOSCSIParallelCommand::getCmdType()
        !            56: {
        !            57:     return cmdType;
        !            58: }
        !            59: 
        !            60: IOSCSICommand *IOSCSIParallelCommand::getOriginalCmd()
        !            61: {
        !            62:     return origCommand;
        !            63: }
        !            64: 
        !            65: UInt32 IOSCSIParallelCommand::getSequenceNumber()
        !            66: {
        !            67:     return sequenceNumber;
        !            68: }
        !            69: 
        !            70: void IOSCSIParallelCommand::getTargetLun( SCSITargetLun *forTargetLun )
        !            71: {
        !            72:     if ( device )
        !            73:     {
        !            74:         *forTargetLun = device->targetLun;
        !            75:     }
        !            76:     else
        !            77:     {
        !            78:         bzero( forTargetLun, sizeof( SCSITargetLun ) );
        !            79:     }
        !            80: }
        !            81: 
        !            82: 
        !            83: 
        !            84: void IOSCSIParallelCommand::setTimeout( UInt32 timeoutMS )
        !            85: {
        !            86:     timeout = timeoutMS;
        !            87: }
        !            88: 
        !            89: UInt32 IOSCSIParallelCommand::getTimeout()
        !            90: {
        !            91:     return timeout;
        !            92: }
        !            93: 
        !            94: 
        !            95: void IOSCSIParallelCommand::setResults( SCSIResults *srcResults )
        !            96: {
        !            97:     results   = *srcResults;
        !            98: 
        !            99:     if ( getCmdType() == kSCSICommandExecute )
        !           100:     {
        !           101:         if ( results.bytesTransferred < xferCount )
        !           102:         {
        !           103:             if ( results.returnCode == kIOReturnSuccess )
        !           104:             {
        !           105:                 results.returnCode = kIOReturnUnderrun;
        !           106:             }
        !           107:         }
        !           108:     }
        !           109: }
        !           110: 
        !           111: IOReturn IOSCSIParallelCommand::getResults( SCSIResults *dstResults )
        !           112: {
        !           113:     if ( dstResults != 0 )
        !           114:     {
        !           115:         *dstResults = results;
        !           116:     }
        !           117: 
        !           118:     return results.returnCode;
        !           119: }
        !           120: 
        !           121: void IOSCSIParallelCommand::setQueueInfo( UInt32 forQueueType, UInt32 forQueuePosition )
        !           122: {
        !           123:     queueType     = forQueueType;
        !           124:     queuePosition = forQueuePosition;
        !           125: }
        !           126: 
        !           127: void IOSCSIParallelCommand::getQueueInfo( UInt32 *forQueueType, UInt32 *forQueuePosition = 0 )
        !           128: {
        !           129:     if ( forQueueType != 0 )      *forQueueType     = queueType;
        !           130:     if ( forQueuePosition != 0 )  *forQueuePosition = queuePosition;
        !           131: }
        !           132: 
        !           133: void IOSCSIParallelCommand::setPointers(  IOMemoryDescriptor *clientDesc, UInt32 transferCount, bool isWrite, bool isSense = false  )
        !           134: {
        !           135:     if ( isSense == false )
        !           136:     {
        !           137:         xferDesc       = clientDesc;
        !           138:         xferCount      = transferCount;
        !           139:         xferDirection  = isWrite;
        !           140:     }
        !           141:     else
        !           142:     {
        !           143:         senseData      = clientDesc;
        !           144:         senseLength    = transferCount;
        !           145:     } 
        !           146: }
        !           147: 
        !           148: void IOSCSIParallelCommand::getPointers(  IOMemoryDescriptor **clientDesc, UInt32 *transferCount, bool *isWrite, bool isSense = false  )
        !           149: {
        !           150:     if ( clientDesc != NULL )
        !           151:     {
        !           152:         *clientDesc = (isSense == false) ? xferDesc : senseData;
        !           153:     }
        !           154:     
        !           155:     if ( transferCount != NULL )
        !           156:     {
        !           157:         *transferCount = (isSense == false) ? xferCount : senseLength;
        !           158:     }
        !           159:  
        !           160:     if ( isWrite != NULL )
        !           161:     {
        !           162:         *isWrite       = (isSense == false) ? xferDirection : false;
        !           163:     }
        !           164: }
        !           165: 
        !           166: void IOSCSIParallelCommand::setCDB( SCSICDBInfo *clientSCSICmd  )      
        !           167: {
        !           168:     scsiCmd    = *clientSCSICmd;
        !           169: }
        !           170: 
        !           171: void IOSCSIParallelCommand::getCDB( SCSICDBInfo *clientSCSICmd )       
        !           172: {
        !           173:     *clientSCSICmd = scsiCmd;
        !           174: }
        !           175: 
        !           176: void IOSCSIParallelCommand::setCallback( void *clientTarget, CallbackFn clientSCSIDoneFn, void *clientRefcon )
        !           177: {
        !           178:     completionInfo.async.target     = clientTarget;
        !           179:     completionInfo.async.callback   = clientSCSIDoneFn;
        !           180:     completionInfo.async.refcon     = clientRefcon;
        !           181: }
        !           182: 
        !           183: bool IOSCSIParallelCommand::execute( UInt32 *cmdSequenceNumber )
        !           184: {
        !           185:     bool               isSync;
        !           186: 
        !           187:     do
        !           188:     {
        !           189:         sequenceNumber = OSIncrementAtomic( (SInt32 *)&controller->sequenceNumber );
        !           190:     }
        !           191:     while ( sequenceNumber == 0 );
        !           192: 
        !           193:     if ( cmdSequenceNumber != 0 )
        !           194:     {
        !           195:         *cmdSequenceNumber = sequenceNumber;
        !           196:     }
        !           197: 
        !           198:     list = (queue_head_t *)device->deviceGate;
        !           199: 
        !           200:     isSync = (completionInfo.async.callback == 0);
        !           201: 
        !           202:     if ( isSync )
        !           203:     {
        !           204:         completionInfo.sync.lock = IOSyncer::create();
        !           205:     }
        !           206: 
        !           207:     device->submitCommand( kSCSICommandExecute, this );
        !           208: 
        !           209:     if ( isSync )
        !           210:     {
        !           211:         completionInfo.sync.lock->wait();
        !           212:     }
        !           213: 
        !           214:     return true;
        !           215: 
        !           216: }
        !           217: 
        !           218: void IOSCSIParallelCommand::abort( UInt32 sequenceNumber )
        !           219: {
        !           220:     device->submitCommand( kSCSICommandAbort, this, sequenceNumber );
        !           221: }
        !           222: 
        !           223: void IOSCSIParallelCommand::complete()
        !           224: {
        !           225:     if ( device )
        !           226:     {
        !           227:         device->completeCommand( this );
        !           228:     }
        !           229:     else
        !           230:     {
        !           231:         controller->completeCommand( this );
        !           232:     }
        !           233: }
        !           234: 
        !           235: /*------------------- Generic CDB Interface -----------------------------------------------*/
        !           236: 
        !           237: void IOSCSIParallelCommand::getCDB( CDBInfo *cdbInfo )
        !           238: {
        !           239:     SCSICDBInfo                scsiCDBInfo;
        !           240: 
        !           241:     bzero( cdbInfo, sizeof(CDBInfo) );
        !           242: 
        !           243:     getCDB( &scsiCDBInfo );
        !           244:     cdbInfo->cdb       = scsiCDBInfo.cdb;
        !           245:     cdbInfo->cdbLength = scsiCDBInfo.cdbLength;
        !           246: }
        !           247: 
        !           248: void IOSCSIParallelCommand::setCDB( CDBInfo *cdbInfo )
        !           249: {
        !           250:     SCSICDBInfo                scsiCDBInfo;
        !           251: 
        !           252:     bzero( &scsiCDBInfo, sizeof(SCSICDBInfo) );
        !           253: 
        !           254:     scsiCDBInfo.cdbLength = cdbInfo->cdbLength;
        !           255:     scsiCDBInfo.cdb       = cdbInfo->cdb;
        !           256:     setCDB( &scsiCDBInfo );    
        !           257: }
        !           258: 
        !           259: IOReturn IOSCSIParallelCommand::getResults( CDBResults *cdbResults )
        !           260: {
        !           261:     SCSIResults                scsiResults;
        !           262:     IOReturn           rc;
        !           263: 
        !           264:     rc = getResults( &scsiResults );
        !           265: 
        !           266:     if ( cdbResults != 0 )
        !           267:     {
        !           268:         bzero( &cdbResults, sizeof(CDBResults) );
        !           269: 
        !           270:         cdbResults->returnCode         = scsiResults.returnCode;
        !           271:         cdbResults->bytesTransferred   = scsiResults.bytesTransferred;
        !           272:         cdbResults->requestSenseDone   = scsiResults.returnCode;
        !           273:         cdbResults->requestSenseLength = scsiResults.requestSenseLength;
        !           274:     }
        !           275: 
        !           276:     return rc;
        !           277: }
        !           278: 
        !           279: 
        !           280: IOCDBDevice *IOSCSIParallelCommand::getDevice( IOCDBDevice * )
        !           281: {
        !           282:     return (IOCDBDevice *)device;
        !           283: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.