void
SCSIPathSet::removeObject ( const IOSCSIProtocolServices * interface )
{
SCSITargetDevicePath * member = NULL;
OSNumber * domainID = NULL;
UInt32 index = 0;
STATUS_LOG ( ( "+SCSIPathSet::removeObject\n" ) );
domainID = SCSITargetDevicePath::GetInterfaceDomainIdentifier ( interface );
for ( index = 0; index < count; index++ )
{
member = ( SCSITargetDevicePath * ) array[index];
if ( member->GetDomainIdentifier ( )->isEqualTo ( domainID ) )
{
super::removeObject ( index );
break;
}
}
STATUS_LOG ( ( "-SCSIPathSet::removeObject\n" ) );
}
IOReturn
IOATABlockStorageDriver::doSyncReadWrite (
IOMemoryDescriptor * buffer,
UInt32 block,
UInt32 nblks )
{
IOReturn ret;
IOATACommand * cmd = NULL;
STATUS_LOG ( ( "IOATABlockStorageDriver::doSyncReadWrite entering\n" ) );
cmd = ataCommandReadWrite ( buffer, block, nblks );
if ( cmd == NULL )
{
return kIOReturnNoMemory;
}
ret = syncExecute ( cmd );
STATUS_LOG ( ( "IOATABlockStorageDriver::doSyncReadWrite exiting ret = %ld.\n", ( UInt32 ) ret ) );
return ret;
}
bool
SCSIPathSet::setObject ( const SCSITargetDevicePath * path )
{
bool result = false;
STATUS_LOG ( ( "+SCSIPathSet::setObject\n" ) );
result = member ( path );
require ( ( result == false ), ErrorExit );
STATUS_LOG ( ( "calling super::setObject()\n" ) );
result = super::setObject ( path );
STATUS_LOG ( ( "-SCSIPathSet::setObject\n" ) );
return result;
ErrorExit:
result = false;
STATUS_LOG ( ( "-SCSIPathSet::setObject\n" ) );
return result;
}
bool
SCSIPathSet::member ( const IOSCSIProtocolServices * interface ) const
{
bool result = false;
OSNumber * domainID = NULL;
SCSITargetDevicePath * element = NULL;
UInt32 index = 0;
STATUS_LOG ( ( "+SCSIPathSet::member\n" ) );
domainID = SCSITargetDevicePath::GetInterfaceDomainIdentifier ( interface );
for ( index = 0; index < count; index++ )
{
element = ( SCSITargetDevicePath * ) array[index];
if ( element->GetDomainIdentifier ( )->isEqualTo ( domainID ) )
{
STATUS_LOG ( ( "path is member\n" ) );
result = true;
break;
}
}
STATUS_LOG ( ( "-SCSIPathSet::member\n" ) );
return result;
}
bool
SCSIPathSet::member ( const SCSITargetDevicePath * path ) const
{
bool result = false;
SCSITargetDevicePath * element = NULL;
UInt32 index = 0;
STATUS_LOG ( ( "+SCSIPathSet::member\n" ) );
for ( index = 0; index < count; index++ )
{
element = ( SCSITargetDevicePath * ) array[index];
if ( element->GetDomainIdentifier ( )->isEqualTo ( path->GetDomainIdentifier ( ) ) )
{
STATUS_LOG ( ( "path is member\n" ) );
result = true;
break;
}
}
STATUS_LOG ( ( "-SCSIPathSet::member\n" ) );
return result;
}
SCSITargetDevicePath *
SCSIPressurePathManager::PortBandwidthGlobals::AllocateBandwidth (
SCSIPathSet * pathSet,
UInt64 bytes )
{
SCSITargetDevicePath * path = NULL;
SCSITargetDevicePath * result = NULL;
UInt32 numPaths = 0;
UInt32 index = 0;
UInt32 resultIndex = 0;
UInt64 bandwidth = 0xFFFFFFFFFFFFFFFFULL;
STATUS_LOG ( ( "+PortBandwidthGlobals::AllocateBandwidth\n" ) );
// Grab the lock since we'll end up manipulating the table.
IOLockLock ( fLock );
// Assume we're using the first path.
result = pathSet->getObject ( index );
numPaths = pathSet->getCount ( );
// Loop over the passed in possible paths.
for ( index = 0; index < numPaths; index++ )
{
UInt32 domainID = 0;
STATUS_LOG ( ( "Getting a path at index = %ld\n", index ) );
path = pathSet->getObject ( index );
domainID = path->GetDomainIdentifier ( )->unsigned32BitValue ( );
// Sanity check
//check ( domainID < fCapacity );
if ( fListHead[domainID] < bandwidth )
{
result = path;
bandwidth = fListHead[domainID];
resultIndex = domainID;
}
}
// Whichever path we chose, charge it with the bandwidth.
fListHead[resultIndex] += bytes;
// Done manipulating the table. Drop the lock.
IOLockUnlock ( fLock );
STATUS_LOG ( ( "-PortBandwidthGlobals::AllocateBandwidth\n" ) );
return result;
}
IOService *
IOATABlockStorageDriver::instantiateNub ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::instantiateNub entering.\n" ) );
IOService * nub = new IOATABlockStorageDevice;
STATUS_LOG ( ( "IOATABlockStorageDriver::instantiateNub exiting nub = %p.\n", nub ) );
return nub;
}
/*
* DoSCSICommand()
* Encapsulate super::SendCommand() to handle unexpected service and
* task errors as well as hand off to SCSI SENSE interpreter.
*/
SCSITaskStatus
IOSCSITape::DoSCSICommand(
SCSITaskIdentifier request,
UInt32 timeoutDuration)
{
SCSITaskStatus taskStatus = kSCSITaskStatus_DeliveryFailure;
SCSIServiceResponse serviceResponse = kSCSIServiceResponse_SERVICE_DELIVERY_OR_TARGET_FAILURE;
require((request != 0), ErrorExit);
serviceResponse = SendCommand(request, timeoutDuration);
sense_flags = 0;
if (serviceResponse != kSCSIServiceResponse_TASK_COMPLETE)
{
STATUS_LOG("unknown service response: 0x%x", serviceResponse);
goto ErrorExit;
}
else
{
taskStatus = GetTaskStatus(request);
if (taskStatus == kSCSITaskStatus_CHECK_CONDITION)
{
/* Get and interpret SCSI SENSE information */
GetSense(request);
}
else if (taskStatus != kSCSITaskStatus_GOOD)
{
STATUS_LOG("unknown task status: 0x%x", taskStatus);
}
else if (taskStatus == kSCSITaskStatus_GOOD)
{
/* setup flags for device file closing */
if (flags & ST_WRITTEN_TOGGLE)
flags |= ST_WRITTEN;
else
flags &= ~ST_WRITTEN;
}
}
/* clear the write toggle bit in case the next command is not a
* write */
flags &= ~ST_WRITTEN_TOGGLE;
ErrorExit:
return taskStatus;
}
IOReturn
IOATABlockStorageDriver::setWriteCacheState ( bool enabled )
{
IOReturn status = kIOReturnSuccess;
STATUS_LOG ( ( "IOATABlockStorageDriver::setWriteCacheState called.\n" ) );
if ( activityTickle ( kIOPMSuperclassPolicy1, ( UInt32 ) kIOATAPowerStateActive ) )
{
status = ataCommandSetFeatures (
enabled ? kATAEnableWriteCache : kATADisableWriteCache,
0,
0,
0,
0,
mATAFlagImmediate,
true );
}
else
{
status = kIOReturnNotResponding;
}
return status;
}
IOReturn
IOATABlockStorageDriver::getWriteCacheState ( bool * enabled )
{
IOReturn status = kIOReturnSuccess;
STATUS_LOG ( ( "IOATABlockStorageDriver::getWriteCacheState called.\n" ) );
if ( activityTickle ( kIOPMSuperclassPolicy1, ( UInt32 ) kIOATAPowerStateActive ) )
{
status = identifyATADevice ( );
if ( status == kIOReturnSuccess )
{
// Get write cache enabled bit. It's in word 85, bit 5
*enabled = fDeviceIdentifyData[kATAIdentifyCommandExtension2] & kATAWriteCacheEnabledMask;
}
}
else
{
status = kIOReturnNotResponding;
}
return status;
}
SCSIPathSet *
SCSIPathSet::withCapacity ( unsigned int capacity )
{
SCSIPathSet * set = NULL;
bool result = false;
STATUS_LOG ( ( "+SCSIPathSet::withCapacity\n" ) );
set = OSTypeAlloc ( SCSIPathSet );
require_nonzero ( set, ErrorExit );
result = set->initWithCapacity ( capacity );
require ( result, ReleaseSet );
return set;
ReleaseSet:
require_nonzero_quiet ( set, ErrorExit );
set->release ( );
set = NULL;
ErrorExit:
return set;
}
void
SCSIPressurePathManager::free ( void )
{
STATUS_LOG ( ( "SCSIPressurePathManager::free\n" ) );
if ( fPathSet != NULL )
{
fPathSet->release ( );
fPathSet = NULL;
}
if ( fInactivePathSet != NULL )
{
fInactivePathSet->release ( );
fInactivePathSet = NULL;
}
if ( fLock != NULL )
{
IOLockFree ( fLock );
fLock = NULL;
}
super::free ( );
}
SCSITargetDevicePath *
SCSIPathSet::getObjectWithInterface ( const IOSCSIProtocolServices * interface ) const
{
SCSITargetDevicePath * element = NULL;
SCSITargetDevicePath * result = NULL;
OSNumber * domainID = NULL;
UInt32 index = 0;
STATUS_LOG ( ( "+SCSIPathSet::getObjectWithInterface\n" ) );
domainID = SCSITargetDevicePath::GetInterfaceDomainIdentifier ( interface );
for ( index = 0; index < count; index++ )
{
element = ( SCSITargetDevicePath * ) array[index];
if ( element->GetDomainIdentifier ( )->isEqualTo ( domainID ) )
{
result = element;
break;
}
}
return result;
}
/*
* GetSenseInformation
*
* Attempt to get SCSI sense information either from the Auto sense
* mechanism or by querying manually.
*/
void
IOSCSITape::GetSense(SCSITaskIdentifier request)
{
SCSI_Sense_Data senseBuffer = { 0 };
bool validSense = false;
SCSIServiceResponse serviceResponse = kSCSIServiceResponse_SERVICE_DELIVERY_OR_TARGET_FAILURE;
IOMemoryDescriptor *bufferDesc = IOMemoryDescriptor::withAddress((void *)&senseBuffer,
sizeof(senseBuffer),
kIODirectionIn);
if (GetTaskStatus(request) == kSCSITaskStatus_CHECK_CONDITION)
{
validSense = GetAutoSenseData(request, &senseBuffer);
if (validSense == false)
{
if (REQUEST_SENSE(request, bufferDesc, kSenseDefaultSize, 0) == true)
serviceResponse = SendCommand(request, kTenSecondTimeoutInMS);
if (serviceResponse == kSCSIServiceResponse_TASK_COMPLETE)
validSense = true;
}
if (validSense == true)
InterpretSense(&senseBuffer);
else
STATUS_LOG("invalid or unretrievable SCSI SENSE");
}
bufferDesc->release();
}
AppleSCSIPDT03Emulator *
AppleSCSIPDT03Emulator::Create ( void )
{
AppleSCSIPDT03Emulator * logicalUnit = NULL;
bool result = false;
STATUS_LOG ( ( "AppleSCSIPDT03Emulator::Create\n" ) );
logicalUnit = OSTypeAlloc ( AppleSCSIPDT03Emulator );
require_nonzero ( logicalUnit, ErrorExit );
result = logicalUnit->init ( );
require ( result, ReleaseLogicalUnit );
return logicalUnit;
ReleaseLogicalUnit:
logicalUnit->release ( );
ErrorExit:
return NULL;
}
IOReturn
IOATABlockStorageDriver::doFormatMedia ( UInt64 byteCapacity )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::doFormatMedia called.\n" ) );
return kIOReturnUnsupported;
}
char *
IOATABlockStorageDriver::getRevisionString ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::getRevisionString called.\n" ) );
return fRevision;
}
char *
IOATABlockStorageDriver::getVendorString ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::getVendorString called.\n" ) );
return NULL;
}
char *
IOATABlockStorageDriver::getAdditionalDeviceInfoString ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::getAdditionalDeviceInfoString called.\n" ) );
return ( "[ATA]" );
}
char *
IOATABlockStorageDriver::getProductString ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::getProductString called.\n" ) );
return fModel;
}
IOReturn
IOATABlockStorageDriver::doStop ( void )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::doStop called.\n" ) );
return kIOReturnSuccess;
}
IOReturn
IOATABlockStorageDriver::doLockUnlockMedia ( bool doLock )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::doLockUnlockMedia called.\n" ) );
return kIOReturnUnsupported; // No removable ATA device support.
}
bool
SCSIPressurePathManager::AddPath ( IOSCSIProtocolServices * interface )
{
bool result = false;
SCSITargetDevicePath * path = NULL;
OSDictionary * dict = NULL;
PortBandwidthGlobals * bw = NULL;
STATUS_LOG ( ( "SCSIPressurePathManager::AddPath\n" ) );
require_nonzero ( interface, ErrorExit );
path = SCSITargetDevicePath::Create ( this, interface );
require_nonzero ( path, ErrorExit );
bw = PortBandwidthGlobals::GetSharedInstance ( );
bw->AddSCSIPort ( path->GetDomainIdentifier ( )->unsigned32BitValue ( ) );
STATUS_LOG ( ( "Registering callback handler\n" ) );
interface->RegisterSCSITaskCompletionRoutine ( &SCSITargetDevicePathManager::PathTaskCallback );
dict = path->GetStatistics ( );
STATUS_LOG ( ( "Got path stats, count = %ld\n", dict->getCount ( ) ) );
fStatistics->setObject ( dict );
STATUS_LOG ( ( "fStatistics array has %ld members\n", fStatistics->getCount ( ) ) );
IOLockLock ( fLock );
result = fPathSet->setObject ( path );
IOLockUnlock ( fLock );
path->release ( );
path = NULL;
ErrorExit:
return result;
}
void
SCSIPressurePathManager::ActivatePath ( IOSCSIProtocolServices * interface )
{
bool result = false;
SCSITargetDevicePath * path = NULL;
STATUS_LOG ( ( "SCSIPressurePathManager::ActivatePath\n" ) );
require_nonzero ( interface, ErrorExit );
IOLockLock ( fLock );
result = fInactivePathSet->member ( interface );
if ( result == true )
{
path = fInactivePathSet->getObjectWithInterface ( interface );
if ( path != NULL )
{
path->retain ( );
path->Activate ( );
fInactivePathSet->removeObject ( interface );
fPathSet->setObject ( path );
path->release ( );
path = NULL;
}
}
else
{
result = fPathSet->member ( interface );
if ( result == false )
{
IOLockUnlock ( fLock );
AddPath ( interface );
goto Exit;
}
}
IOLockUnlock ( fLock );
ErrorExit:
Exit:
return;
}
IOReturn
IOATABlockStorageDriver::reportMaxValidBlock ( UInt64 * maxBlock )
{
UInt64 diskCapacity = 0;
assert ( fATADevice && maxBlock );
STATUS_LOG ( ( "IOATABlockStorageDriver::reportMaxValidBlock called.\n" ) );
doGetFormatCapacities ( &diskCapacity, 1 );
*maxBlock = ( diskCapacity / kATADefaultSectorSize ) - 1;
STATUS_LOG ( ( "IOATABlockStorageDriver::reportMaxValidBlock maxBlock = %ld.\n", *maxBlock ) );
return kIOReturnSuccess;
}
IOReturn
IOATABlockStorageDriver::reportLockability ( bool * isLockable )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::reportLockability called.\n" ) );
*isLockable = false;
return kIOReturnSuccess;
}
IOReturn
IOATABlockStorageDriver::reportEjectability ( bool * isEjectable )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::reportEjectability called.\n" ) );
*isEjectable = (fATASocketType == kPCCardSocket);
return kIOReturnSuccess;
}
IOReturn
IOATABlockStorageDriver::reportWriteProtection ( bool * isWriteProtected )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::reportWriteProtection called.\n" ) );
*isWriteProtected = false;
return kIOReturnSuccess;
}
IOReturn
IOATABlockStorageDriver::doSynchronizeCache ( void )
{
IOReturn status = kIOReturnSuccess;
IOATACommand * cmd = NULL;
STATUS_LOG ( ( "IOATABlockStorageDriver::doSynchronizeCache called.\n" ) );
if ( fATASocketType == kPCCardSocket )
{
// Device doesnÕt support flush cache. DonÕt send the command.
fNumCommandsOutstanding--;
status = kIOReturnSuccess;
goto Exit;
}
cmd = ataCommandFlushCache ( );
// Do we have a valid command?
if ( cmd == NULL )
{
// Return no memory error.
fNumCommandsOutstanding--;
status = kIOReturnNoMemory;
goto Exit;
}
// Send the command to flush the cache.
status = syncExecute ( cmd, kATATimeout1Minute, 0 );
Exit:
STATUS_LOG ( ( "IOATABlockStorageDriver::doSynchronizeCache returning status = %ld.\n", ( UInt32 ) status ) );
return status;
}
IOReturn
IOATABlockStorageDriver::reportBlockSize ( UInt64 * blockSize )
{
STATUS_LOG ( ( "IOATABlockStorageDriver::reportBlockSize called.\n" ) );
*blockSize = kATADefaultSectorSize;
return kIOReturnSuccess;
}