arch/m32r/include/asm/cacheflush.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_M32R_CACHEFLUSH_H
   3 #define _ASM_M32R_CACHEFLUSH_H
   4
   5 #include <linux/mm.h>
   6
   7 extern void _flush_cache_all(void);
   8 extern void _flush_cache_copyback_all(void);
   9
  10 #if defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
  11 #define flush_cache_all()                       do { } while (0)
  12 #define flush_cache_mm(mm)                      do { } while (0)
  13 #define flush_cache_dup_mm(mm)                  do { } while (0)
  14 #define flush_cache_range(vma, start, end)      do { } while (0)
  15 #define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
  16 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  17 #define flush_dcache_page(page)                 do { } while (0)
  18 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  19 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  20 #ifndef CONFIG_SMP
  21 #define flush_icache_range(start, end)          _flush_cache_copyback_all()
  22 #define flush_icache_page(vma,pg)               _flush_cache_copyback_all()
  23 #define flush_icache_user_range(vma,pg,adr,len) _flush_cache_copyback_all()
  24 #define flush_cache_sigtramp(addr)              _flush_cache_copyback_all()
  25 #else   /* CONFIG_SMP */
  26 extern void smp_flush_cache_all(void);
  27 #define flush_icache_range(start, end)          smp_flush_cache_all()
  28 #define flush_icache_page(vma,pg)               smp_flush_cache_all()
  29 #define flush_icache_user_range(vma,pg,adr,len) smp_flush_cache_all()
  30 #define flush_cache_sigtramp(addr)              _flush_cache_copyback_all()
  31 #endif  /* CONFIG_SMP */
  32 #elif defined(CONFIG_CHIP_M32102)
  33 #define flush_cache_all()                       do { } while (0)
  34 #define flush_cache_mm(mm)                      do { } while (0)
  35 #define flush_cache_dup_mm(mm)                  do { } while (0)
  36 #define flush_cache_range(vma, start, end)      do { } while (0)
  37 #define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
  38 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  39 #define flush_dcache_page(page)                 do { } while (0)
  40 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  41 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  42 #define flush_icache_range(start, end)          _flush_cache_all()
  43 #define flush_icache_page(vma,pg)               _flush_cache_all()
  44 #define flush_icache_user_range(vma,pg,adr,len) _flush_cache_all()
  45 #define flush_cache_sigtramp(addr)              _flush_cache_all()
  46 #else
  47 #define flush_cache_all()                       do { } while (0)
  48 #define flush_cache_mm(mm)                      do { } while (0)
  49 #define flush_cache_dup_mm(mm)                  do { } while (0)
  50 #define flush_cache_range(vma, start, end)      do { } while (0)
  51 #define flush_cache_page(vma, vmaddr, pfn)      do { } while (0)
  52 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  53 #define flush_dcache_page(page)                 do { } while (0)
  54 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  55 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  56 #define flush_icache_range(start, end)          do { } while (0)
  57 #define flush_icache_page(vma,pg)               do { } while (0)
  58 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  59 #define flush_cache_sigtramp(addr)              do { } while (0)
  60 #endif  /* CONFIG_CHIP_* */
  61
  62 #define flush_cache_vmap(start, end)    do { } while (0)
  63 #define flush_cache_vunmap(start, end)  do { } while (0)
  64
  65 #define copy_to_user_page(vma, page, vaddr, dst, src, len)      \
  66 do {                                                            \
  67         memcpy(dst, src, len);                                  \
  68         flush_icache_user_range(vma, page, vaddr, len);         \
  69 } while (0)
  70 #define copy_from_user_page(vma, page, vaddr, dst, src, len)    \
  71         memcpy(dst, src, len)
  72
  73 #endif /* _ASM_M32R_CACHEFLUSH_H */