include/asm-ia64/cacheflush.h

   1 #ifndef _ASM_IA64_CACHEFLUSH_H
   2 #define _ASM_IA64_CACHEFLUSH_H
   3
   4 /*
   5  * Copyright (C) 2002 Hewlett-Packard Co
   6  *      David Mosberger-Tang <davidm@hpl.hp.com>
   7  */
   8
   9 #include <linux/page-flags.h>
  10
  11 #include <asm/bitops.h>
  12 #include <asm/page.h>
  13
  14 /*
  15  * Cache flushing routines.  This is the kind of stuff that can be very expensive, so try
  16  * to avoid them whenever possible.
  17  */
  18
  19 #define flush_cache_all()                       do { } while (0)
  20 #define flush_cache_mm(mm)                      do { } while (0)
  21 #define flush_cache_range(vma, start, end)      do { } while (0)
  22 #define flush_cache_page(vma, vmaddr)           do { } while (0)
  23 #define flush_icache_page(vma,page)             do { } while (0)
  24
  25 #define flush_dcache_page(page)                 \
  26 do {                                            \
  27         clear_bit(PG_arch_1, &(page)->flags);   \
  28 } while (0)
  29
  30 extern void flush_icache_range (unsigned long start, unsigned long end);
  31
  32 #define flush_icache_user_range(vma, page, user_addr, len)                                      \
  33 do {                                                                                            \
  34         unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK);  \
  35         flush_icache_range(_addr, _addr + (len));                                               \
  36 } while (0)
  37
  38 #endif /* _ASM_IA64_CACHEFLUSH_H */