---
title: Private Accessors
framework: kernel
role: collectionGroup
role_heading: API Collection
path: kernel/iodmacommand/private_accessors
---

# Private Accessors

## Topics

### Fields

- [fMemory](kernel/iodmacommand/private_accessors/fmemory.md)
- [reserved](kernel/iodmacommand/private_accessors/reserved.md)
- [fRefCon](kernel/iodmacommand/private_accessors/frefcon.md)
- [fOutSeg](kernel/iodmacommand/private_accessors/foutseg.md)
- [fNumSegments](kernel/iodmacommand/private_accessors/fnumsegments.md)
- [fNumAddressBits](kernel/iodmacommand/private_accessors/fnumaddressbits.md)
- [fMaxTransferSize](kernel/iodmacommand/private_accessors/fmaxtransfersize.md)
- [fMaxSegmentSize](kernel/iodmacommand/private_accessors/fmaxsegmentsize.md)
- [fMappingOptions](kernel/iodmacommand/private_accessors/fmappingoptions.md)
- [fBypassMask](kernel/iodmacommand/private_accessors/fbypassmask.md)
- [fAlignMask](kernel/iodmacommand/private_accessors/falignmask.md)
- [fActive](kernel/iodmacommand/private_accessors/factive.md)
- [fMapper](kernel/iodmacommand/private_accessors/fmapper.md)

### Functions

- [genIOVMSegments](kernel/iodmacommand/3516448-geniovmsegments.md)
- [genIOVMSegments](kernel/iodmacommand/3516449-geniovmsegments.md)
- [transfer](kernel/iodmacommand/1547712-transfer.md)
- [transferSegment](kernel/iodmacommand/1547763-transfersegment.md)
- [clientOutputSegment](kernel/iodmacommand/1547718-clientoutputsegment.md)
- [segmentOp](kernel/iodmacommand/1547716-segmentop.md)
- [Dispatch](kernel/iodmacommand/3645751-dispatch.md)
- [walkAll](kernel/iodmacommand/1547752-walkall.md)

### Callbacks

- [CompleteDMA_Invoke](kernel/iodmacommand/3645747-completedma_invoke.md)
- [Create](kernel/iodmacommand/3645748-create.md)
- [Create_Impl](kernel/iodmacommand/3645749-create_impl.md)
- [Create_Invoke](kernel/iodmacommand/3645750-create_invoke.md)
- [GetPreparation_Invoke](kernel/iodmacommand/3645754-getpreparation_invoke.md)
- [PerformOperation_Invoke](kernel/iodmacommand/3645757-performoperation_invoke.md)
- [PrepareForDMA_Invoke](kernel/iodmacommand/3645760-preparefordma_invoke.md)
- [CompleteDMA](kernel/iodmacommand/3645745-completedma.md)
- [CompleteDMA](driverkit/iodmacommand/3645792-completedma.md)
- [CompleteDMA_Impl](kernel/iodmacommand/3645746-completedma_impl.md)
- [GetPreparation](kernel/iodmacommand/3645752-getpreparation.md)
- [GetPreparation](driverkit/iodmacommand/3645793-getpreparation.md)
- [GetPreparation_Impl](kernel/iodmacommand/3645753-getpreparation_impl.md)
- [PerformOperation](kernel/iodmacommand/3645755-performoperation.md)
- [PerformOperation](driverkit/iodmacommand/3645794-performoperation.md)
- [PerformOperation_Impl](kernel/iodmacommand/3645756-performoperation_impl.md)
- [PrepareForDMA](kernel/iodmacommand/3645758-preparefordma.md)
- [PrepareForDMA](driverkit/iodmacommand/3645795-preparefordma.md)
- [PrepareForDMA_Impl](kernel/iodmacommand/3645759-preparefordma_impl.md)