/*
*------------------------------------------------------------------------------
*
* HIDCloseReportDescriptor - Close the Descriptor
*
* Input:
* ptPreparsedData - The PreParsedData Structure
* Output:
* ptPreparsedData - The PreParsedData Structure
* Returns:
* kHIDSuccess - Success
* kHIDNullPointerErr - Argument, Pointer was Null
*
*------------------------------------------------------------------------------
*/
OSStatus HIDCloseReportDescriptor(HIDPreparsedDataRef preparsedDataRef)
{
HIDPreparsedDataPtr ptPreparsedData = (HIDPreparsedDataPtr) preparsedDataRef;
OSStatus iStatus;
/*
* Disallow NULL Pointers
*/
if (ptPreparsedData == NULL)
return kHIDNullPointerErr;
/*
* If it's marked closed then don't do anything
*/
if (ptPreparsedData->hidTypeIfValid != kHIDOSType)
return kHIDInvalidPreparsedDataErr;
/*
* Free any memory that was allocated
*/
if (ptPreparsedData->rawMemPtr != NULL)
{
PoolDeallocate (ptPreparsedData->rawMemPtr, ptPreparsedData->numBytesAllocated);
ptPreparsedData->rawMemPtr = NULL;
}
/*
* Mark closed
*/
ptPreparsedData->hidTypeIfValid = 0;
/*
* Deallocate the preparsed data
*/
iStatus = PoolDeallocate (ptPreparsedData, sizeof(HIDPreparsedData));
return iStatus;
}
//////////////////////////////////////////////
//
// DVDisposeNotification
//
// remove notification from list
//
OSErr DVCDisposeNotification( DVCDeviceConnectionID connID, DVCNotificationID notifyID )
{
DVNotificationEntryPtr pEntry;
OSErr error = noErr;
// we're not going to do a check, but it's REAL important not to call
// this function from anywhere but task level.
// go find the entry and remove it from the list
pEntry = (DVNotificationEntryPtr) notifyID;
if ( pEntry != nil )
{
PBDequeue( (QElemPtr) pEntry, gpFamilyGlobals->notificationQueue );
PoolDeallocate( (void*) pEntry );
}
else
error = paramErr;
return error;
}
static int
DoExtendISTTree( RegEntryID *root_id, RegEntryID *funcs, int num_funcs, ISTProperty *istp )
{
ISTParentInfo *p;
InterruptSetID setID;
OSStatus status=noErr;
int i;
/* tree needs to be extended */
lprintf("Extending interrupt tree...\n");
p = PoolAllocateResident( sizeof(ISTParentInfo), true /*clear*/ );
if( !p ) {
lprintf("Could not allocate resident memory!\n");
return -1;
}
p->num_members = num_funcs;
status = GetInterruptFunctions( (*istp)[kISTChipInterruptSource].setID,
(*istp)[kISTChipInterruptSource].member,
&p->info.oldInterruptSetRefcon,
&p->info.oldInterruptServiceFunction,
&p->info.oldInterruptEnableFunction,
&p->info.oldInterruptDisableFunction);
if( status )
goto err;
/* disable interrupts */
if( p->info.oldInterruptDisableFunction )
p->info.oldInterruptDisableFunction( p->info.interruptSetMember,
p->info.oldInterruptSetRefcon );
status = CreateInterruptSet( (*istp)[kISTChipInterruptSource].setID,
(*istp)[kISTChipInterruptSource].member,
num_funcs, &setID, kReturnToParentWhenNotComplete );
if( status )
goto err;
status = InstallInterruptFunctions( (*istp)[kISTChipInterruptSource].setID,
(*istp)[kISTChipInterruptSource].member,
p, TransversalISR, NULL, NULL );
if( status )
goto err;
/* Add driver-ist properties */
RegistryPropertyDelete( root_id, kISTPropertyName );
RegistryPropertyCreate( root_id, "driver-ist-parent", istp, sizeof(ISTProperty) );
for( i=0; i<num_funcs; i++ ) {
ISTProperty child;
CLEAR( child );
child[kISTChipInterruptSource].setID = setID;
child[kISTChipInterruptSource].member = i+1;
// lprintf("Adding driver-ist property\n");
RegistryPropertyCreate( &funcs[i], kISTPropertyName, &child, sizeof(child) );
InstallInterruptFunctions( setID, i+1, NULL, NULL,
ChildInterruptEnabler, ChildInterruptDisabler );
}
/* enable interrupts */
if( p->info.oldInterruptEnableFunction )
p->info.oldInterruptEnableFunction( p->info.interruptSetMember,
p->info.oldInterruptSetRefcon);
err:
if( status != noErr ) {
lprintf("Unexpected error %d\n", status );
PoolDeallocate( p );
}
return status;
}
/*
*------------------------------------------------------------------------------
*
* HIDOpenReportDescriptor - Initialize the HID Parser
*
* Input:
* psHidReportDescriptor - The HID Report Descriptor (String)
* descriptorLength - Length of the Descriptor in bytes
* ptPreparsedData - The PreParsedData Structure
* Output:
* ptPreparsedData - The PreParsedData Structure
* Returns:
* kHIDSuccess - Success
* kHIDNullPointerErr - Argument, Pointer was Null
*
*------------------------------------------------------------------------------
*/
OSStatus
HIDOpenReportDescriptor (void * hidReportDescriptor,
IOByteCount descriptorLength,
HIDPreparsedDataRef * preparsedDataRef,
UInt32 flags)
{
HIDPreparsedDataPtr ptPreparsedData = NULL;
OSStatus iStatus;
HIDReportDescriptor tDescriptor;
/*
* Disallow NULL Pointers
*/
if ((hidReportDescriptor == NULL) || (preparsedDataRef == NULL))
return kHIDNullPointerErr;
/*
* Initialize the return result, and allocate space for preparsed data
*/
*preparsedDataRef = NULL;
ptPreparsedData = PoolAllocateResident (sizeof (HIDPreparsedData), kShouldClearMem);
/*
* Make sure we got the memory
*/
if (ptPreparsedData == NULL)
return kHIDNotEnoughMemoryErr;
/*
* Copy the flags field
*/
ptPreparsedData->flags = flags;
/*
* Initialize the memory allocation pointer
*/
ptPreparsedData->rawMemPtr = NULL;
/*
* Set up the descriptor structure
*/
tDescriptor.descriptor = hidReportDescriptor;
tDescriptor.descriptorLength = descriptorLength;
/*
* Count various items in the descriptor
* allocate space within the PreparsedData structure
* and initialize the counters there
*/
iStatus = HIDCountDescriptorItems(&tDescriptor,ptPreparsedData);
/*
* Parse the Descriptor
* filling in the structures in the PreparsedData structure
*/
if (iStatus == kHIDSuccess)
{
iStatus = HIDParseDescriptor(&tDescriptor,ptPreparsedData);
/*
* Mark the PreparsedData initialized, maybe
*/
if (iStatus == kHIDSuccess && ptPreparsedData->rawMemPtr != NULL)
{
ptPreparsedData->hidTypeIfValid = kHIDOSType;
*preparsedDataRef = (HIDPreparsedDataRef) ptPreparsedData;
return kHIDSuccess;
}
}
// something failed, deallocate everything, and make sure we return an error
if (ptPreparsedData->rawMemPtr != NULL)
PoolDeallocate (ptPreparsedData->rawMemPtr, ptPreparsedData->numBytesAllocated);
PoolDeallocate (ptPreparsedData, sizeof(HIDPreparsedData));
if (iStatus == kHIDSuccess)
iStatus = kHIDNotEnoughMemoryErr;
return iStatus;
}
