/* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.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. * *  vineetg: May 2011: for Non-aliasing VIPT D-cache following can be NOPs *   -flush_cache_dup_mm (fork) *   -likewise for flush_cache_mm (exit/execve) *   -likewise for flush_cache_{range,page} (munmap, exit, COW-break) * *  vineetg: April 2008 *   -Added a critical CacheLine flush to copy_to_user_page( ) which *     was causing gdbserver to not setup breakpoints consistently */ #ifndef _ASM_CACHEFLUSH_H#define _ASM_CACHEFLUSH_H #include <linux/mm.h> void flush_cache_all(void); void flush_icache_range(unsigned long start, unsigned long end);void flush_icache_page(struct vm_area_struct *vma, struct page *page);void flush_icache_range_vaddr(unsigned long paddr, unsigned long u_vaddr,				     int len); #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 void flush_dcache_page(struct page *page); void dma_cache_wback_inv(unsigned long start, unsigned long sz);void dma_cache_inv(unsigned long start, unsigned long sz);void dma_cache_wback(unsigned long start, unsigned long sz); #define flush_dcache_mmap_lock(mapping)		do { } while (0)#define flush_dcache_mmap_unlock(mapping)	do { } while (0) /* TBD: optimize this */#define flush_cache_vmap(start, end)		flush_cache_all()#define flush_cache_vunmap(start, end)		flush_cache_all() /* * VM callbacks when entire/range of user-space V-P mappings are * torn-down/get-invalidated * * Currently we don't support D$ aliasing configs for our VIPT caches * NOPS for VIPT Cache with non-aliasing D$ configurations only */#define flush_cache_dup_mm(mm)			/* called on fork */#define flush_cache_mm(mm)			/* called on munmap/exit */#define flush_cache_range(mm, u_vstart, u_vend)#define flush_cache_page(vma, u_vaddr, pfn)	/* PF handling/COW-break */ #define copy_to_user_page(vma, page, vaddr, dst, src, len)		\do {									\	memcpy(dst, src, len);						\	if (vma->vm_flags & VM_EXEC)					\		flush_icache_range_vaddr((unsigned long)(dst), vaddr, len);\} while (0) #define copy_from_user_page(vma, page, vaddr, dst, src, len)		\	memcpy(dst, src, len);						\ #endif