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.

LinuxCNC Documentation                             2006-10-12                               rtapi_region(3rtapi)