HelenOS sources

sys_dmamem_unmap   76 kernel/generic/include/ddi/ddi.h extern sys_errno_t sys_dmamem_unmap(uintptr_t, size_t, unsigned int);
sys_dmamem_unmap  117 kernel/generic/src/syscall/syscall.c 	[SYS_DMAMEM_UNMAP] = (syshandler_t) sys_dmamem_unmap,