kernel2/ioport.c

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include <sys/types.h>
  20 #include <ioport.h>
  21 #include <syscall.h>
  22
  23 int ioport_init() {
  24   iopb_general = malloc(IOPORT_MAXNUM/sizeof(*iopb_general));
  25   if (syscall_create(SYSCALL_IO_REG,ioport_reg,1)==-1) return -1;
  26   if (syscall_create(SYSCALL_IO_UNREG,ioport_unreg,1)==-1) return -1;
  27   return 0;
  28 }
  29
  30 int ioport_reg(unsigned int port) {
  31   /*if (port>=IOPORT_MAXNUM) return -ENOENT;
  32   if (proc_current->iopb==NULL) return -EPERM;
  33   if (IOPORT_ISREG(iopb_general,port)) return -EEXIST;
  34
  35   IOPORT_REG(iopb_general,port);
  36   IOPORT_REG(proc_current->iopb,port);*/
  37   return 0;
  38 }
  39
  40 int ioport_unreg(unsigned int port) {
  41   /*if (port>=IOPORT_MAXNUM) return -ENOENT;
  42   if (proc_current->iopb==NULL) return -EPERM;
  43   if (!IOPORT_ISREG(proc_current->iopb,port)) return -EPERM;
  44
  45   IOPORT_UNREG(iopb_general,port);
  46   IOPORT_UNREG(proc_current->iopb,port);*/
  47   return 0;
  48 }