include/asm-nios2nommu/mman.h

   1 /*
   2  * Copied from the m68k port.
   3  *
   4  * Copyright (C) 2004, Microtronix Datacom Ltd.
   5  *
   6  * All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  16  * NON INFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  */
  24
  25 #ifndef __NIOS2_MMAN_H__
  26 #define __NIOS2_MMAN_H__
  27
  28 #define PROT_READ       0x1             /* page can be read */
  29 #define PROT_WRITE      0x2             /* page can be written */
  30 #define PROT_EXEC       0x4             /* page can be executed */
  31 #define PROT_SEM        0x8             /* page may be used for atomic ops */
  32 #define PROT_NONE       0x0             /* page can not be accessed */
  33 #define PROT_GROWSDOWN  0x01000000      /* mprotect flag: extend change to start of growsdown vma */
  34 #define PROT_GROWSUP    0x02000000      /* mprotect flag: extend change to end of growsup vma */
  35
  36 #define MAP_SHARED      0x01            /* Share changes */
  37 #define MAP_PRIVATE     0x02            /* Changes are private */
  38 #define MAP_TYPE        0x0f            /* Mask for type of mapping */
  39 #define MAP_FIXED       0x10            /* Interpret addr exactly */
  40 #define MAP_ANONYMOUS   0x20            /* don't use a file */
  41
  42 #define MAP_GROWSDOWN   0x0100          /* stack-like segment */
  43 #define MAP_DENYWRITE   0x0800          /* ETXTBSY */
  44 #define MAP_EXECUTABLE  0x1000          /* mark it as an executable */
  45 #define MAP_LOCKED      0x2000          /* pages are locked */
  46 #define MAP_NORESERVE   0x4000          /* don't check for reservations */
  47 #define MAP_POPULATE    0x8000          /* populate (prefault) pagetables */
  48 #define MAP_NONBLOCK    0x10000         /* do not block on IO */
  49
  50 #define MS_ASYNC        1               /* sync memory asynchronously */
  51 #define MS_INVALIDATE   2               /* invalidate the caches */
  52 #define MS_SYNC         4               /* synchronous memory sync */
  53
  54 #define MCL_CURRENT     1               /* lock all current mappings */
  55 #define MCL_FUTURE      2               /* lock all future mappings */
  56
  57 #define MADV_NORMAL     0x0             /* default page-in behavior */
  58 #define MADV_RANDOM     0x1             /* page-in minimum required */
  59 #define MADV_SEQUENTIAL 0x2             /* read-ahead aggressively */
  60 #define MADV_WILLNEED   0x3             /* pre-fault pages */
  61 #define MADV_DONTNEED   0x4             /* discard these pages */
  62
  63 /* compatibility flags */
  64 #define MAP_ANON        MAP_ANONYMOUS
  65 #define MAP_FILE        0
  66
  67 #endif /* __NIOS2_MMAN_H__ */
  68