/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define IODIRECTIONCOMPLETEWITHDATAVALIDDEFINED 1
kIODirectionCompleteWithDataValid = 0x00000080,
};
+
#ifdef __LP64__
typedef IOOptionBits IODirection;
#endif /* __LP64__ */
kIOMemoryPreparedReadOnly = 0x00008000,
#endif
kIOMemoryPersistent = 0x00010000,
-#ifdef XNU_KERNEL_PRIVATE
- kIOMemoryReserved6156215 = 0x00020000,
-#endif
+ kIOMemoryMapCopyOnWrite = 0x00020000,
+ kIOMemoryRemote = 0x00040000,
kIOMemoryThreadSafe = 0x00100000, // Shared with Buffer MD
kIOMemoryClearEncrypt = 0x00200000, // Shared with Buffer MD
+ kIOMemoryUseReserve = 0x00800000, // Shared with Buffer MD
+#define IOMEMORYUSERESERVEDEFINED 1
#ifdef XNU_KERNEL_PRIVATE
kIOMemoryBufferPurgeable = 0x00400000,
kIOMemoryPurgeableVolatileBehaviorLifo = VM_PURGABLE_BEHAVIOR_LIFO,
kIOMemoryPurgeableVolatileOrderingObsolete = VM_PURGABLE_ORDERING_OBSOLETE,
kIOMemoryPurgeableVolatileOrderingNormal = VM_PURGABLE_ORDERING_NORMAL,
+ kIOMemoryPurgeableFaultOnAccess = VM_PURGABLE_DEBUG_FAULT,
};
enum
{
kIOMDSetDMAInactive = kIOMDDMAActive,
kIOMDAddDMAMapSpec = 0x04000000,
kIOMDDMAMap = 0x05000000,
+ kIOMDDMAUnmap = 0x06000000,
kIOMDDMACommandOperationMask = 0xFF000000,
};
struct IOMDDMACharacteristics {
UInt64 fOffset; // Input/Output offset
UInt64 fIOVMAddr, fLength; // Output variables
UInt8 fMapped; // Input Variable, Require mapped IOVMA
+ UInt64 fMappedBase; // Input base of mapping
};
typedef UInt8 IOMDDMAWalkSegmentState[128];
+// fMapped:
+enum
+{
+ kIOMDDMAWalkMappedLocal = 2
+};
#endif /* KERNEL_PRIVATE */
#ifdef XNU_KERNEL_PRIVATE
public:
struct IOMemoryReference * _memRef;
+ vm_tag_t _kernelTag;
+ vm_tag_t _userTag;
+ int16_t _dmaReferences;
+ uint16_t _internalFlags;
+ kern_allocation_name_t _mapName;
protected:
-#else
- void * __iomd_reserved5;
-#endif
+#else /* XNU_KERNEL_PRIVATE */
+ void * __iomd_reserved5;
+ uint16_t __iomd_reserved1[4];
+ uintptr_t __iomd_reserved2;
+#endif /* XNU_KERNEL_PRIVATE */
-#ifdef __LP64__
- uint64_t __iomd_reserved1;
- uint64_t __iomd_reserved2;
- uint64_t __iomd_reserved3;
- uint64_t __iomd_reserved4;
-#else /* !__LP64__ */
+ uintptr_t __iomd_reserved3;
+ uintptr_t __iomd_reserved4;
+
+#ifndef __LP64__
IODirection _direction; /* use _flags instead */
#endif /* !__LP64__ */
IOByteCount _length; /* length of all ranges */
uint64_t length,
uint64_t * mapAddress,
uint64_t * mapLength);
+ IOReturn dmaUnmap(
+ IOMapper * mapper,
+ IODMACommand * command,
+ uint64_t offset,
+ uint64_t mapAddress,
+ uint64_t mapLength);
+ void dmaMapRecord(
+ IOMapper * mapper,
+ IODMACommand * command,
+ uint64_t mapLength);
+
+ void setVMTags(vm_tag_t kernelTag, vm_tag_t userTag);
+ vm_tag_t getVMTag(vm_map_t map);
#endif
private:
@abstract Create an IOMemoryDescriptor to describe one virtual range of the specified map.
@discussion This method creates and initializes an IOMemoryDescriptor for memory consisting of a single virtual memory range mapped into the specified map. This memory descriptor needs to be prepared before it can be used to extract data from the memory described.
@param address The virtual address of the first byte in the memory.
- @param withLength The length of memory.
+ @param length The length of memory.
@param options
kIOMemoryDirectionMask (options:direction) This nibble indicates the I/O direction to be associated with the descriptor, which may affect the operation of the prepare and complete methods on some architectures.
@param task The task the virtual ranges are mapped into. Note that unlike IOMemoryDescriptor::withAddress(), kernel_task memory must be explicitly prepared when passed to this api. The task argument may be NULL to specify memory by physical address.
virtual IOOptionBits getTag( void );
+/*! @function getFlags
+ @abstract Accessor to the retrieve the options the memory descriptor was created with.
+ @discussion Accessor to the retrieve the options the memory descriptor was created with, and flags with its state. These bits are defined by the kIOMemory* enum.
+ @result The flags bitfield. */
+
+ uint64_t getFlags(void);
+
/*! @function readBytes
@abstract Copy data from the memory descriptor's buffer to the specified buffer.
@discussion This method copies data from the memory descriptor's memory at the given offset, to the caller's buffer. The memory descriptor MUST have the kIODirectionOut direcction bit set and be prepared. kIODirectionOut means that this memory descriptor will be output to an external device, so readBytes is used to get memory into a local buffer for a PIO transfer to the device.
IOMemoryDescriptor * fOwner;
uint8_t fUserClientUnmap;
#if IOTRACKING
- IOTracking fTracking;
+ IOTrackingUser fTracking;
#endif
#endif /* XNU_KERNEL_PRIVATE */
@abstract Accessor to the virtual address of the first byte in the mapping.
@discussion This method returns the virtual address of the first byte in the mapping.
@result A virtual address. */
+ inline mach_vm_address_t getAddress() __attribute__((always_inline));
/*! @function getSize
@abstract Accessor to the length of the mapping.
@discussion This method returns the length of the mapping.
@result A byte count. */
- inline mach_vm_address_t getAddress() __attribute__((always_inline));
inline mach_vm_size_t getSize() __attribute__((always_inline));
#else /* !__LP64__ */
/*! @function getAddress
@abstract Accessor to the virtual address of the first byte in the mapping.
@discussion This method returns the virtual address of the first byte in the mapping.
@result A virtual address. */
+ virtual mach_vm_address_t getAddress();
/*! @function getSize
@abstract Accessor to the length of the mapping.
@discussion This method returns the length of the mapping.
@result A byte count. */
- virtual mach_vm_address_t getAddress();
virtual mach_vm_size_t getSize();
#endif /* !__LP64__ */
projects / apple / xnu.git / blobdiff