target/linux/ubicom32/files/arch/ubicom32/include/asm/mmu_context.h

   1 /*
   2  * arch/ubicom32/include/asm/mmu_context.h
   3  *   MMU context definitions for Ubicom32 architecture.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  * Copyright (C) 2004, Microtronix Datacom Ltd., All rights reserved.
   7  *
   8  * This file is part of the Ubicom32 Linux Kernel Port.
   9  *
  10  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  11  * it and/or modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation, either version 2 of the
  13  * License, or (at your option) any later version.
  14  *
  15  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  16  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  17  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  18  * the GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with the Ubicom32 Linux Kernel Port.  If not,
  22  * see <http://www.gnu.org/licenses/>.
  23  *
  24  * Ubicom32 implementation derived from (with many thanks):
  25  *   arch/m68knommu
  26  *   arch/blackfin
  27  *   arch/parisc
  28  */
  29
  30 #ifndef _ASM_UBICOM32_MMU_CONTEXT_H
  31 #define _ASM_UBICOM32_MMU_CONTEXT_H
  32
  33 #include <asm/setup.h>
  34 #include <asm/page.h>
  35 #include <asm/pgalloc.h>
  36
  37 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
  38 {
  39 }
  40
  41 extern inline int
  42 init_new_context(struct task_struct *tsk, struct mm_struct *mm)
  43 {
  44         // mm->context = virt_to_phys(mm->pgd);
  45         return(0);
  46 }
  47
  48 #define destroy_context(mm)             do { } while(0)
  49
  50 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
  51 {
  52 }
  53
  54 #define deactivate_mm(tsk,mm)   do { } while (0)
  55
  56 extern inline void activate_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm)
  57 {
  58 }
  59
  60 #endif /* _ASM_UBICOM32_MMU_CONTEXT_H */