arch/arm/include/asm/outercache.h

   1 /*
   2  * arch/arm/include/asm/outercache.h
   3  *
   4  * Copyright (C) 2010 ARM Ltd.
   5  * Written by Catalin Marinas <catalin.marinas@arm.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #ifndef __ASM_OUTERCACHE_H
  22 #define __ASM_OUTERCACHE_H
  23
  24 struct outer_cache_fns {
  25         void (*inv_range)(unsigned long, unsigned long);
  26         void (*clean_range)(unsigned long, unsigned long);
  27         void (*flush_range)(unsigned long, unsigned long);
  28 #ifdef CONFIG_OUTER_CACHE_SYNC
  29         void (*sync)(void);
  30 #endif
  31 };
  32
  33 #ifdef CONFIG_OUTER_CACHE
  34
  35 extern struct outer_cache_fns outer_cache;
  36
  37 static inline void outer_inv_range(unsigned long start, unsigned long end)
  38 {
  39         if (outer_cache.inv_range)
  40                 outer_cache.inv_range(start, end);
  41 }
  42 static inline void outer_clean_range(unsigned long start, unsigned long end)
  43 {
  44         if (outer_cache.clean_range)
  45                 outer_cache.clean_range(start, end);
  46 }
  47 static inline void outer_flush_range(unsigned long start, unsigned long end)
  48 {
  49         if (outer_cache.flush_range)
  50                 outer_cache.flush_range(start, end);
  51 }
  52
  53 #else
  54
  55 static inline void outer_inv_range(unsigned long start, unsigned long end)
  56 { }
  57 static inline void outer_clean_range(unsigned long start, unsigned long end)
  58 { }
  59 static inline void outer_flush_range(unsigned long start, unsigned long end)
  60 { }
  61
  62 #endif
  63
  64 #ifdef CONFIG_OUTER_CACHE_SYNC
  65 static inline void outer_sync(void)
  66 {
  67         if (outer_cache.sync)
  68                 outer_cache.sync();
  69 }
  70 #else
  71 static inline void outer_sync(void)
  72 { }
  73 #endif
  74
  75 #endif  /* __ASM_OUTERCACHE_H */