ado_device_mmap()

Map a region of physical memory

Synopsis:

#include <audio_driver.h>

void *ado_device_mmap ( unsigned long addr,
                        unsigned long size );

Arguments:

addr: The address of the physical memory region.
size: The size of the physical memory region, in bytes.

Description:

The ado_device_mmap() function maps the specified region of physical memory into the driver's virtual memory.

Returns:

A pointer to the resultant virtual memory region, or MAP_FAILED if an error occurred (errno is set).

Errors:

ENOMEM: The address range requested is outside of the allowed process address range, or there wasn't enough memory to satisfy the request.
ENXIO: The address from addr for size bytes is invalid for the requested object.

Classification:

QNX Neutrino

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Yes

See also:

ado_device_munmap()