NAME¶

rtapi_region - functions to manage I/O memory regions

SYNTAX¶

void *rtapi_request_region(unsigned long base, unsigned long int size, const char *name)

void rtapi_release_region(unsigned long base, unsigned long int size)

ARGUMENTS¶

base

The base address of the I/O region

size

The size of the I/O region

name

The name to be shown in /proc/ioports

DESCRIPTION¶

rtapi_request_region reserves I/O memory starting at base and going for size bytes.

REALTIME CONSIDERATIONS¶

May be called from realtime init/cleanup code only.

RETURN VALUE¶

rtapi_request_region returns NULL if the allocation fails, and a non-NULL value otherwise.

rtapi_release_region has no return value.