---
title: doReadSpace
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofirewirecontroller/1456818-doreadspace
---

# doReadSpace

## Declaration

```occ
virtual UInt32 doReadSpace(UInt16 nodeID, IOFWSpeed & speed, FWAddress addr, UInt32 len, IOMemoryDescriptor **buf, IOByteCount *offset, IODMACommand **dma_command, IOFWRequestRefCon refcon);
```