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

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *  Port on Texas Instruments TMS320C6x architecture
   4  *
   5  *  Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
   6  *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
   7  */
   8 #ifndef _ASM_C6X_CACHEFLUSH_H
   9 #define _ASM_C6X_CACHEFLUSH_H
  10 
  11 #include <linux/spinlock.h>
  12 
  13 #include <asm/setup.h>
  14 #include <asm/cache.h>
  15 #include <asm/mman.h>
  16 #include <asm/page.h>
  17 #include <asm/string.h>
  18 
  19 /*
  20  * virtually-indexed cache management (our cache is physically indexed)
  21  */
  22 #define flush_cache_all()                       do {} while (0)
  23 #define flush_cache_mm(mm)                      do {} while (0)
  24 #define flush_cache_dup_mm(mm)                  do {} while (0)
  25 #define flush_cache_range(mm, start, end)       do {} while (0)
  26 #define flush_cache_page(vma, vmaddr, pfn)      do {} while (0)
  27 #define flush_cache_vmap(start, end)            do {} while (0)
  28 #define flush_cache_vunmap(start, end)          do {} while (0)
  29 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  30 #define flush_dcache_page(page)                 do {} while (0)
  31 #define flush_dcache_mmap_lock(mapping)         do {} while (0)
  32 #define flush_dcache_mmap_unlock(mapping)       do {} while (0)
  33 
  34 /*
  35  * physically-indexed cache management
  36  */
  37 #define flush_icache_range(s, e)                                  \
  38 do {                                                              \
  39                 L1D_cache_block_writeback((s), (e));              \
  40                 L1P_cache_block_invalidate((s), (e));             \
  41 } while (0)
  42 
  43 #define flush_icache_page(vma, page)                                      \
  44 do {                                                              \
  45         if ((vma)->vm_flags & PROT_EXEC)                                  \
  46                 L1D_cache_block_writeback_invalidate(page_address(page),  \
  47                         (unsigned long) page_address(page) + PAGE_SIZE)); \
  48                 L1P_cache_block_invalidate(page_address(page),            \
  49                         (unsigned long) page_address(page) + PAGE_SIZE)); \
  50 } while (0)
  51 
  52 
  53 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  54 do {                                                 \
  55         memcpy(dst, src, len);                       \
  56         flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
  57 } while (0)
  58 
  59 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  60         memcpy(dst, src, len)
  61 
  62 #endif /* _ASM_C6X_CACHEFLUSH_H */