---
title: dmaEventSource
framework: kernel
role: symbol
role_heading: Type Method
path: kernel/iodmaeventsource/1589934-dmaeventsource
---

# dmaEventSource

## Declaration

```occ
static OSPtr<IODMAEventSource> dmaEventSource(OSObject *owner, IOService *provider, Action completion, Action notification, UInt32 dmaIndex);
```