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kernel/linux-rt-4.4.41/arch/c6x/include/asm/cacheflush.h 2.05 KB
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  /*
   *  Port on Texas Instruments TMS320C6x architecture
   *
   *  Copyright (C) 2004, 2009, 2010 Texas Instruments Incorporated
   *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License version 2 as
   *  published by the Free Software Foundation.
   */
  #ifndef _ASM_C6X_CACHEFLUSH_H
  #define _ASM_C6X_CACHEFLUSH_H
  
  #include <linux/spinlock.h>
  
  #include <asm/setup.h>
  #include <asm/cache.h>
  #include <asm/mman.h>
  #include <asm/page.h>
  #include <asm/string.h>
  
  /*
   * virtually-indexed cache management (our cache is physically indexed)
   */
  #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(mm, start, end)	do {} while (0)
  #define flush_cache_page(vma, vmaddr, pfn)	do {} while (0)
  #define flush_cache_vmap(start, end)		do {} while (0)
  #define flush_cache_vunmap(start, end)		do {} while (0)
  #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
  #define flush_dcache_page(page)			do {} while (0)
  #define flush_dcache_mmap_lock(mapping)		do {} while (0)
  #define flush_dcache_mmap_unlock(mapping)	do {} while (0)
  
  /*
   * physically-indexed cache management
   */
  #define flush_icache_range(s, e)				  \
  do {								  \
  		L1D_cache_block_writeback((s), (e));		  \
  		L1P_cache_block_invalidate((s), (e));		  \
  } while (0)
  
  #define flush_icache_page(vma, page)					  \
  do {								  \
  	if ((vma)->vm_flags & PROT_EXEC)				  \
  		L1D_cache_block_writeback_invalidate(page_address(page),  \
  			(unsigned long) page_address(page) + PAGE_SIZE)); \
  		L1P_cache_block_invalidate(page_address(page),		  \
  			(unsigned long) page_address(page) + PAGE_SIZE)); \
  } while (0)
  
  
  #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  do {						     \
  	memcpy(dst, src, len);			     \
  	flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
  } while (0)
  
  #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  	memcpy(dst, src, len)
  
  #endif /* _ASM_C6X_CACHEFLUSH_H */