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cacheflush.h

#ifndef _ASM_IA64_CACHEFLUSH_H
#define _ASM_IA64_CACHEFLUSH_H

/*
 * Copyright (C) 2002 Hewlett-Packard Co
 *    David Mosberger-Tang <davidm@hpl.hp.com>
 */

#include <linux/page-flags.h>
#include <linux/bitops.h>

#include <asm/page.h>

/*
 * Cache flushing routines.  This is the kind of stuff that can be very expensive, so try
 * to avoid them whenever possible.
 */

#define flush_cache_all()                 do { } while (0)
#define flush_cache_mm(mm)                do { } while (0)
#define flush_cache_dup_mm(mm)                  do { } while (0)
#define flush_cache_range(vma, start, end)      do { } while (0)
#define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
#define flush_icache_page(vma,page)       do { } while (0)
#define flush_cache_vmap(start, end)            do { } while (0)
#define flush_cache_vunmap(start, end)          do { } while (0)

#define flush_dcache_page(page)                 \
do {                                \
      clear_bit(PG_arch_1, &(page)->flags);     \
} while (0)

#define flush_dcache_mmap_lock(mapping)         do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)

extern void flush_icache_range (unsigned long start, unsigned long end);

#define flush_icache_user_range(vma, page, user_addr, len)                          \
do {                                                                    \
      unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK);    \
      flush_icache_range(_addr, _addr + (len));                               \
} while (0)

#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { memcpy(dst, src, len); \
     flush_icache_user_range(vma, page, vaddr, len); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
      memcpy(dst, src, len)

#endif /* _ASM_IA64_CACHEFLUSH_H */

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