arch/frv/include/asm/mmu.h

   1 /* mmu.h: memory management context for FR-V with or without MMU support
   2  *
   3  * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11 #ifndef _ASM_MMU_H
  12 #define _ASM_MMU_H
  13
  14 typedef struct {
  15 #ifdef CONFIG_MMU
  16         struct list_head id_link;               /* link in list of context ID owners */
  17         unsigned short  id;                     /* MMU context ID */
  18         unsigned short  id_busy;                /* true if ID is in CXNR */
  19         unsigned long   itlb_cached_pge;        /* [SCR0] PGE cached for insn TLB handler */
  20         unsigned long   itlb_ptd_mapping;       /* [DAMR4] PTD mapping for itlb cached PGE */
  21         unsigned long   dtlb_cached_pge;        /* [SCR1] PGE cached for data TLB handler */
  22         unsigned long   dtlb_ptd_mapping;       /* [DAMR5] PTD mapping for dtlb cached PGE */
  23
  24 #else
  25         unsigned long           end_brk;
  26
  27 #endif
  28
  29 #ifdef CONFIG_BINFMT_ELF_FDPIC
  30         unsigned long   exec_fdpic_loadmap;
  31         unsigned long   interp_fdpic_loadmap;
  32 #endif
  33
  34 } mm_context_t;
  35
  36 #ifdef CONFIG_MMU
  37 extern int __nongpreldata cxn_pinned;
  38 extern int cxn_pin_by_pid(pid_t pid);
  39 #endif
  40
  41 #endif /* _ASM_MMU_H */