AppleEHCIedMemoryBlock.cpp [plain text]
#include <IOKit/usb/IOUSBLog.h>
#include "AppleEHCIedMemoryBlock.h"
#define super IOBufferMemoryDescriptor
OSDefineMetaClassAndStructors(AppleEHCIedMemoryBlock, IOBufferMemoryDescriptor);
AppleEHCIedMemoryBlock*
AppleEHCIedMemoryBlock::NewMemoryBlock(void)
{
AppleEHCIedMemoryBlock *me = new AppleEHCIedMemoryBlock;
IOByteCount len;
if (!me)
USBError(1, "AppleEHCIedMemoryBlock::NewMemoryBlock, constructor failed!");
if (me && !me->initWithOptions(kIOMemorySharingTypeMask, kEHCIPageSize, kEHCIPageSize))
{
USBError(1, "AppleEHCIedMemoryBlock::NewMemoryBlock, initWithOptions failed!");
me->release();
return NULL;
}
USBLog(7, "AppleEHCIedMemoryBlock::NewMemoryBlock, sizeof (me) = %d, sizeof (super) = %d", sizeof(AppleEHCIedMemoryBlock), sizeof(super));
me->prepare();
me->_sharedLogical = (EHCIQueueHeadSharedPtr)me->getBytesNoCopy();
bzero(me->_sharedLogical, kEHCIPageSize);
me->_sharedPhysical = me->getPhysicalSegment(0, &len);
return me;
}
UInt32
AppleEHCIedMemoryBlock::NumEDs(void)
{
return EDsPerBlock;
}
IOPhysicalAddress
AppleEHCIedMemoryBlock::GetPhysicalPtr(UInt32 index)
{
IOPhysicalAddress ret = NULL;
if (index < EDsPerBlock)
ret = _sharedPhysical + (index * sizeof(EHCIQueueHeadShared));
return ret;
}
EHCIQueueHeadSharedPtr
AppleEHCIedMemoryBlock::GetLogicalPtr(UInt32 index)
{
EHCIQueueHeadSharedPtr ret = NULL;
if (index < EDsPerBlock)
ret = &_sharedLogical[index];
return ret;
}
AppleEHCIedMemoryBlock*
AppleEHCIedMemoryBlock::GetNextBlock(void)
{
return _nextBlock;
}
void
AppleEHCIedMemoryBlock::SetNextBlock(AppleEHCIedMemoryBlock* next)
{
_nextBlock = next;
}