---
title: PrepareForDMA
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iodmacommand/3645758-preparefordma
---

# PrepareForDMA

## Declaration

```occ
kern_return_t PrepareForDMA(uint64_t options, IOMemoryDescriptor *memory, uint64_t offset, uint64_t length, uint64_t *flags, uint32_t *segmentsCount, IOAddressSegment *segments, OSDispatchMethod supermethod);
```

## See Also

### 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](driverkit/iodmacommand/3645795-preparefordma.md)
- [PrepareForDMA_Impl](kernel/iodmacommand/3645759-preparefordma_impl.md)