free virtual address mapping for physical offsets within device memory
void devmem_mapout(void *addr, size_t nbytes);
releases a mapping allocated
by a previous call to
Virtual address for which the mapping will be released.
Number of bytes in the mapping.
This must match the value of
the nbytes argument supplied to the corresponding
is typically called from the
entry point routine
or the CFG_REMOVE subfunction of the
entry point routine to free
device memory mappings obtained in the
CFG_ADD subfunction of the
dynamically allocate and free address mappings.
In most cases, drivers keep the mappings forever,
is not called.
Context and synchronization
User or blockable
Differences between versions
In DDI versions prior to version 8,
function to release a virtual address mapping
that was obtained with the
``Memory-mapped I/O'' in HDK Technical Reference
19 June 2005
© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005