include/mem/physical.h

0001 /*                    The Quest Operating System
0002  *  Copyright (C) 2005-2010  Richard West, Boston University
0003  *
0004  *  This program is free software: you can redistribute it and/or modify
0005  *  it under the terms of the GNU General Public License as published by
0006  *  the Free Software Foundation, either version 3 of the License, or
0007  *  (at your option) any later version.
0008  *
0009  *  This program is distributed in the hope that it will be useful,
0010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
0011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0012  *  GNU General Public License for more details.
0013  *
0014  *  You should have received a copy of the GNU General Public License
0015  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
0016  */
0017
0018 #ifndef _PHYSICAL_H_
0019 #define _PHYSICAL_H_
0020 #include "types.h"
0021
0022 extern uint32 mm_table[];       /* Bitmap for free/mapped physical pages */
0023 extern uint32 mm_limit;         /* Actual physical page limit */
0024 extern uint32 alloc_phys_frame (void);
0025 extern uint32 alloc_phys_frames (uint32);
0026 extern void free_phys_frame (uint32);
0027 extern void free_phys_frames (uint32, uint32);
0028
0029 #endif
0030
0031 /*
0032  * Local Variables:
0033  * indent-tabs-mode: nil
0034  * mode: C
0035  * c-file-style: "gnu"
0036  * c-basic-offset: 2
0037  * End:
0038  */
0039
0040 /* vi: set et sw=2 sts=2: */