| /* Access to hardware i/o ports. Hurd/x86 version. |
| Copyright (C) 2002 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sys/io.h> |
| #include <hurd.h> |
| #include <mach/i386/mach_i386.h> |
| |
| int |
| ioperm (unsigned long int from, unsigned long int num, int turn_on) |
| { |
| #if ! HAVE_I386_IO_PERM_MODIFY |
| return __hurd_fail (ENOSYS); |
| #else |
| error_t err; |
| device_t devmaster; |
| |
| /* With the device master port we get a capability that represents |
| this range of io ports. */ |
| err = __get_privileged_ports (NULL, &devmaster); |
| if (! err) |
| { |
| io_perm_t perm; |
| err = __i386_io_perm_create (devmaster, from, from + num - 1, &perm); |
| __mach_port_deallocate (__mach_task_self (), devmaster); |
| if (! err) |
| { |
| /* Now we add or remove that set from our task's bitmap. */ |
| err = __i386_io_perm_modify (__mach_task_self (), perm, turn_on); |
| __mach_port_deallocate (__mach_task_self (), perm); |
| } |
| |
| if (err == MIG_BAD_ID) /* Old kernels don't have these RPCs. */ |
| err = ENOSYS; |
| } |
| |
| return err ? __hurd_fail (err) : 0; |
| #endif |
| } |