HelenOS sources

uspace_ptr_ddi_ioarg_t   78 kernel/generic/include/ddi/ddi.h extern sys_errno_t sys_iospace_enable(uspace_ptr_ddi_ioarg_t);
uspace_ptr_ddi_ioarg_t   79 kernel/generic/include/ddi/ddi.h extern sys_errno_t sys_iospace_disable(uspace_ptr_ddi_ioarg_t);
uspace_ptr_ddi_ioarg_t  400 kernel/generic/src/ddi/ddi.c sys_errno_t sys_iospace_enable(uspace_ptr_ddi_ioarg_t uspace_io_arg)
uspace_ptr_ddi_ioarg_t  411 kernel/generic/src/ddi/ddi.c sys_errno_t sys_iospace_disable(uspace_ptr_ddi_ioarg_t uspace_io_arg)
HelenOS homepage, sources at GitHub