#ifndef __IOKIT_IOMAPPER_H
#define __IOKIT_IOMAPPER_H
#include <sys/cdefs.h>
__BEGIN_DECLS
#include <IOKit/IOTypes.h>
#include <mach/vm_types.h>
ppnum_t IOMapperIOVMAlloc(unsigned pages);
void IOMapperIOVMFree(ppnum_t addr, unsigned pages);
ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page);
__END_DECLS
#if __cplusplus
#include <IOKit/IOService.h>
#include <IOKit/IOMemoryDescriptor.h>
#include <IOKit/IODMACommand.h>
class OSData;
extern const OSSymbol * gIOMapperIDKey;
class IOMapper : public IOService
{
OSDeclareAbstractStructors(IOMapper);
friend class IOPlatformExpert;
friend class IOMemoryDescriptor;
private:
enum SystemMapperState {
kNoMapper = 0,
kUnknown = 1,
kHasMapper = 2, kWaitMask = 3,
};
protected:
#ifdef XNU_KERNEL_PRIVATE
uint64_t __reservedA[7];
uint32_t __reservedB;
uint32_t fPageSize;
#else
uint64_t __reserved[8];
#endif
bool fIsSystem;
static void setMapperRequired(bool hasMapper);
static void waitForSystemMapper();
virtual bool initHardware(IOService *provider) = 0;
public:
virtual bool start(IOService *provider) APPLE_KEXT_OVERRIDE;
virtual void free() APPLE_KEXT_OVERRIDE;
static IOMapper *gSystem;
static void checkForSystemMapper()
{ if ((uintptr_t) gSystem & kWaitMask) waitForSystemMapper(); };
static IOMapper * copyMapperForDevice(IOService * device);
static IOMapper * copyMapperForDeviceWithIndex(IOService * device, unsigned int index);
virtual uint64_t getPageSize(void) const = 0;
virtual IOReturn iovmMapMemory(IOMemoryDescriptor * memory,
uint64_t descriptorOffset,
uint64_t length,
uint32_t mapOptions,
const IODMAMapSpecification * mapSpecification,
IODMACommand * dmaCommand,
const IODMAMapPageList * pageList,
uint64_t * mapAddress,
uint64_t * mapLength) = 0;
virtual IOReturn iovmUnmapMemory(IOMemoryDescriptor * memory,
IODMACommand * dmaCommand,
uint64_t mapAddress,
uint64_t mapLength) = 0;
virtual IOReturn iovmInsert(uint32_t options,
uint64_t mapAddress,
uint64_t offset,
uint64_t physicalAddress,
uint64_t length) = 0;
virtual uint64_t mapToPhysicalAddress(uint64_t mappedAddress) = 0;
private:
OSMetaClassDeclareReservedUnused(IOMapper, 0);
OSMetaClassDeclareReservedUnused(IOMapper, 1);
OSMetaClassDeclareReservedUnused(IOMapper, 2);
OSMetaClassDeclareReservedUnused(IOMapper, 3);
OSMetaClassDeclareReservedUnused(IOMapper, 4);
OSMetaClassDeclareReservedUnused(IOMapper, 5);
OSMetaClassDeclareReservedUnused(IOMapper, 6);
OSMetaClassDeclareReservedUnused(IOMapper, 7);
OSMetaClassDeclareReservedUnused(IOMapper, 8);
OSMetaClassDeclareReservedUnused(IOMapper, 9);
OSMetaClassDeclareReservedUnused(IOMapper, 10);
OSMetaClassDeclareReservedUnused(IOMapper, 11);
OSMetaClassDeclareReservedUnused(IOMapper, 12);
OSMetaClassDeclareReservedUnused(IOMapper, 13);
OSMetaClassDeclareReservedUnused(IOMapper, 14);
OSMetaClassDeclareReservedUnused(IOMapper, 15);
};
#endif
#endif