---
name: "snd_pcm_lib_mmap_iomem"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/snd_pcm_lib_mmap_iomem"
---

# snd\_pcm\_lib\_mmap\_iomem(9)

Default PCM data mmap function for I/O mem

## NAME

snd\_pcm\_lib\_mmap\_iomem - Default PCM data mmap function for I/O mem

## SYNOPSIS

**int snd\_pcm\_lib\_mmap\_iomem(struct snd\_pcm\_substream \*** *substream***, struct vm\_area\_struct \*** *area***);**

## ARGUMENTS

*substream*

PCM substream

*area*

VMA

## DESCRIPTION

When your hardware uses the iomapped pages as the hardware buffer and wants to mmap it, pass this function as mmap pcm\_ops. Note that this is supposed to work only on limited architectures.

## COPYRIGHT