+// Used for dedicated communications for IODMACommand
+enum {
+ kIOMDWalkSegments = 0x01000000,
+ kIOMDFirstSegment = 1 | kIOMDWalkSegments,
+ kIOMDGetCharacteristics = 0x02000000,
+ kIOMDGetCharacteristicsMapped = 1 | kIOMDGetCharacteristics,
+ kIOMDDMAActive = 0x03000000,
+ kIOMDSetDMAActive = 1 | kIOMDDMAActive,
+ kIOMDSetDMAInactive = kIOMDDMAActive,
+ kIOMDAddDMAMapSpec = 0x04000000,
+ kIOMDDMAMap = 0x05000000,
+ kIOMDDMACommandOperationMask = 0xFF000000,
+};
+struct IOMDDMACharacteristics {
+ UInt64 fLength;
+ UInt32 fSGCount;
+ UInt32 fPages;
+ UInt32 fPageAlign;
+ ppnum_t fHighestPage;
+ IODirection fDirection;
+ UInt8 fIsPrepared;
+};
+struct IOMDDMAWalkSegmentArgs {
+ UInt64 fOffset; // Input/Output offset
+ UInt64 fIOVMAddr, fLength; // Output variables
+ UInt8 fMapped; // Input Variable, Require mapped IOVMA
+};
+typedef UInt8 IOMDDMAWalkSegmentState[128];
+
+struct IOMDDMAMapArgs {
+ IOMapper * fMapper;
+ IODMAMapSpecification fMapSpec;
+ uint64_t fOffset;
+ uint64_t fLength;
+ uint64_t fAlloc;
+ ppnum_t fAllocCount;
+ uint8_t fMapContig;
+};
+
+struct IODMACommandInternal
+{
+ IOMDDMAWalkSegmentState fState;
+ IOMDDMACharacteristics fMDSummary;
+
+ UInt64 fPreparedOffset;
+ UInt64 fPreparedLength;
+
+ UInt32 fSourceAlignMask;
+
+ UInt8 fCursor;
+ UInt8 fCheckAddressing;
+ UInt8 fIterateOnly;
+ UInt8 fMisaligned;
+ UInt8 fMapContig;
+ UInt8 fPrepared;
+ UInt8 fDoubleBuffer;
+ UInt8 fNewMD;
+ UInt8 fLocalMapper;
+
+ vm_page_t fCopyPageAlloc;
+ vm_page_t fCopyNext;
+ vm_page_t fNextRemapPage;
+
+ ppnum_t fCopyPageCount;
+
+ addr64_t fLocalMapperPageAlloc;
+ ppnum_t fLocalMapperPageCount;
+
+ class IOBufferMemoryDescriptor * fCopyMD;
+
+ IOService * fDevice;
+
+ // IODMAEventSource use
+ IOReturn fStatus;
+ UInt64 fActualByteCount;
+ AbsoluteTime fTimeStamp;
+};
+
+struct IOMemoryDescriptorDevicePager {
+ void * devicePager;
+ unsigned int pagerContig:1;
+ unsigned int unused:31;
+ IOMemoryDescriptor * memory;
+};
+
+struct IOMemoryDescriptorReserved {
+ IOMemoryDescriptorDevicePager dp;
+ uint64_t preparationID;
+ // for kernel IOMD subclasses... they have no expansion
+ uint64_t kernReserved[4];
+};
+
+struct iopa_t
+{
+ IOLock * lock;
+ queue_head_t list;
+ vm_size_t pagecount;
+ vm_size_t bytecount;
+};
+
+struct iopa_page_t
+{
+ queue_chain_t link;
+ uint64_t avail;
+ uint32_t signature;
+};
+typedef struct iopa_page_t iopa_page_t;
+
+typedef uintptr_t (*iopa_proc_t)(iopa_t * a);
+
+enum
+{
+ kIOPageAllocSignature = 'iopa'
+};
+
+extern "C" void iopa_init(iopa_t * a);
+extern "C" uintptr_t iopa_alloc(iopa_t * a, iopa_proc_t alloc, vm_size_t bytes, uint32_t balign);
+extern "C" uintptr_t iopa_free(iopa_t * a, uintptr_t addr, vm_size_t bytes);
+extern "C" uint32_t gIOPageAllocChunkBytes;
+
+extern "C" iopa_t gIOBMDPageAllocator;
+
+extern "C" struct timeval gIOLastSleepTime;
+extern "C" struct timeval gIOLastWakeTime;
+
+extern clock_sec_t gIOConsoleLockTime;
+
+extern OSSet * gIORemoveOnReadProperties;
+
+extern "C" void IOKitResetTime( void );
+extern "C" void IOKitInitializeTime( void );
+
+extern "C" OSString * IOCopyLogNameForPID(int pid);
+
+#if defined(__i386__) || defined(__x86_64__)
+extern "C" void IOSetKeyStoreData(IOMemoryDescriptor * data);
+#endif
+
+void IOScreenLockTimeUpdate(clock_sec_t secs);
+
+