kernel/arch/c6x/include/asm/cacheflush.h

   1 /*
   2  *  Port on Texas Instruments TMS320C6x architecture
   3  *
   4  *  Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
   5  *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.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 #ifndef _ASM_C6X_CACHEFLUSH_H
  12 #define _ASM_C6X_CACHEFLUSH_H
  13
  14 #include <linux/spinlock.h>
  15
  16 #include <asm/setup.h>
  17 #include <asm/cache.h>
  18 #include <asm/mman.h>
  19 #include <asm/page.h>
  20 #include <asm/string.h>
  21
  22 /*
  23  * virtually-indexed cache management (our cache is physically indexed)
  24  */
  25 #define flush_cache_all()                       do {} while (0)
  26 #define flush_cache_mm(mm)                      do {} while (0)
  27 #define flush_cache_dup_mm(mm)                  do {} while (0)
  28 #define flush_cache_range(mm, start, end)       do {} while (0)
  29 #define flush_cache_page(vma, vmaddr, pfn)      do {} while (0)
  30 #define flush_cache_vmap(start, end)            do {} while (0)
  31 #define flush_cache_vunmap(start, end)          do {} while (0)
  32 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  33 #define flush_dcache_page(page)                 do {} while (0)
  34 #define flush_dcache_mmap_lock(mapping)         do {} while (0)
  35 #define flush_dcache_mmap_unlock(mapping)       do {} while (0)
  36
  37 /*
  38  * physically-indexed cache management
  39  */
  40 #define flush_icache_range(s, e)                                  \
  41 do {                                                              \
  42                 L1D_cache_block_writeback((s), (e));              \
  43                 L1P_cache_block_invalidate((s), (e));             \
  44 } while (0)
  45
  46 #define flush_icache_page(vma, page)                                      \
  47 do {                                                              \
  48         if ((vma)->vm_flags & PROT_EXEC)                                  \
  49                 L1D_cache_block_writeback_invalidate(page_address(page),  \
  50                         (unsigned long) page_address(page) + PAGE_SIZE)); \
  51                 L1P_cache_block_invalidate(page_address(page),            \
  52                         (unsigned long) page_address(page) + PAGE_SIZE)); \
  53 } while (0)
  54
  55
  56 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  57 do {                                                 \
  58         memcpy(dst, src, len);                       \
  59         flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
  60 } while (0)
  61
  62 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  63         memcpy(dst, src, len)
  64
  65 #endif /* _ASM_C6X_CACHEFLUSH_H */