---
title: PrepareForDMA
framework: DriverKit
role: symbol
role_heading: Instance Method
platforms: [DriverKit, iOS, iPadOS, macOS]
path: driverkit/iodmacommand/3645795-preparefordma
---

# PrepareForDMA

## Declaration

```occ
virtual kern_return_t PrepareForDMA(uint64_t options, IOMemoryDescriptor *memory, uint64_t offset, uint64_t length, uint64_t *flags, uint32_t *segmentsCount, IOAddressSegment segments[32]);
```

## See Also

### Performing Internal Operations

- [CompleteDMA](completedma.md)
- [GetPreparation](getpreparation.md)
- [PerformOperation](performoperation.md)