C++ (Cpp) __flush_invalidate_dcache_page_alias示例

示例#1

文件： cache.c 项目： DirtyDroidX/android_kernel_htc_m8ul

void flush_dcache_page(struct page *page)
{
	struct address_space *mapping = page_mapping(page);


	if (mapping && !mapping_mapped(mapping)) {
		if (!test_bit(PG_arch_1, &page->flags))
			set_bit(PG_arch_1, &page->flags);
		return;

	} else {

		unsigned long phys = page_to_phys(page);
		unsigned long temp = page->index << PAGE_SHIFT;
		unsigned long alias = !(DCACHE_ALIAS_EQ(temp, phys));
		unsigned long virt;


		if (!alias && !mapping)
			return;

		__flush_invalidate_dcache_page((long)page_address(page));

		virt = TLBTEMP_BASE_1 + (temp & DCACHE_ALIAS_MASK);

		if (alias)
			__flush_invalidate_dcache_page_alias(virt, phys);

		if (mapping)
			__invalidate_icache_page_alias(virt, phys);
	}

	
}

示例#2

文件： cache.c 项目： JamesChenFromChina/linux

void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
		unsigned long vaddr, void *dst, const void *src,
		unsigned long len)
{
	unsigned long phys = page_to_phys(page);
	unsigned long alias = !(DCACHE_ALIAS_EQ(vaddr, phys));

	/* Flush and invalidate user page if aliased. */

	if (alias) {
		unsigned long t = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(t, phys);
	}

	/* Copy data */
	
	memcpy(dst, src, len);

	/*
	 * Flush and invalidate kernel page if aliased and synchronize 
	 * data and instruction caches for executable pages. 
	 */

	if (alias) {
		unsigned long t = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);

		__flush_invalidate_dcache_range((unsigned long) dst, len);
		if ((vma->vm_flags & VM_EXEC) != 0)
			__invalidate_icache_page_alias(t, phys);

	} else if ((vma->vm_flags & VM_EXEC) != 0) {
		__flush_dcache_range((unsigned long)dst,len);
		__invalidate_icache_range((unsigned long) dst, len);
	}
}

示例#3

文件： cache.c 项目： DirtyDroidX/android_kernel_htc_m8ul

void copy_to_user_page(struct vm_area_struct *vma, struct page *page, 
		unsigned long vaddr, void *dst, const void *src,
		unsigned long len)
{
	unsigned long phys = page_to_phys(page);
	unsigned long alias = !(DCACHE_ALIAS_EQ(vaddr, phys));

	

	if (alias) {
		unsigned long temp = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(temp, phys);
	}

	
	
	memcpy(dst, src, len);


	if (alias) {
		unsigned long temp = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);

		__flush_invalidate_dcache_range((unsigned long) dst, len);
		if ((vma->vm_flags & VM_EXEC) != 0) {
			__invalidate_icache_page_alias(temp, phys);
		}

	} else if ((vma->vm_flags & VM_EXEC) != 0) {
		__flush_dcache_range((unsigned long)dst,len);
		__invalidate_icache_range((unsigned long) dst, len);
	}
}

示例#4

文件： cache.c 项目： JamesChenFromChina/linux

void flush_dcache_page(struct page *page)
{
	struct address_space *mapping = page_mapping(page);

	/*
	 * If we have a mapping but the page is not mapped to user-space
	 * yet, we simply mark this page dirty and defer flushing the 
	 * caches until update_mmu().
	 */

	if (mapping && !mapping_mapped(mapping)) {
		if (!test_bit(PG_arch_1, &page->flags))
			set_bit(PG_arch_1, &page->flags);
		return;

	} else {

		unsigned long phys = page_to_phys(page);
		unsigned long temp = page->index << PAGE_SHIFT;
		unsigned long alias = !(DCACHE_ALIAS_EQ(temp, phys));
		unsigned long virt;

		/* 
		 * Flush the page in kernel space and user space.
		 * Note that we can omit that step if aliasing is not
		 * an issue, but we do have to synchronize I$ and D$
		 * if we have a mapping.
		 */

		if (!alias && !mapping)
			return;

		virt = TLBTEMP_BASE_1 + (phys & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(virt, phys);

		virt = TLBTEMP_BASE_1 + (temp & DCACHE_ALIAS_MASK);

		if (alias)
			__flush_invalidate_dcache_page_alias(virt, phys);

		if (mapping)
			__invalidate_icache_page_alias(virt, phys);
	}

	/* There shouldn't be an entry in the cache for this page anymore. */
}

示例#5

文件： cache.c 项目： JamesChenFromChina/linux

void local_flush_cache_page(struct vm_area_struct *vma, unsigned long address,
		      unsigned long pfn)
{
	/* Note that we have to use the 'alias' address to avoid multi-hit */

	unsigned long phys = page_to_phys(pfn_to_page(pfn));
	unsigned long virt = TLBTEMP_BASE_1 + (address & DCACHE_ALIAS_MASK);

	__flush_invalidate_dcache_page_alias(virt, phys);
	__invalidate_icache_page_alias(virt, phys);
}

示例#6

文件： cache.c 项目： DirtyDroidX/android_kernel_htc_m8ul

void flush_cache_page(struct vm_area_struct* vma, unsigned long address,
    		      unsigned long pfn)
{
	

	unsigned long phys = page_to_phys(pfn_to_page(pfn));
	unsigned long virt = TLBTEMP_BASE_1 + (address & DCACHE_ALIAS_MASK);

	__flush_invalidate_dcache_page_alias(virt, phys);
	__invalidate_icache_page_alias(virt, phys);
}

示例#7

文件： cache.c 项目： JamesChenFromChina/linux

void
update_mmu_cache(struct vm_area_struct * vma, unsigned long addr, pte_t *ptep)
{
	unsigned long pfn = pte_pfn(*ptep);
	struct page *page;

	if (!pfn_valid(pfn))
		return;

	page = pfn_to_page(pfn);

	/* Invalidate old entry in TLBs */

	flush_tlb_page(vma, addr);

#if (DCACHE_WAY_SIZE > PAGE_SIZE)

	if (!PageReserved(page) && test_bit(PG_arch_1, &page->flags)) {
		unsigned long phys = page_to_phys(page);
		unsigned long tmp;

		tmp = TLBTEMP_BASE_1 + (phys & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(tmp, phys);
		tmp = TLBTEMP_BASE_1 + (addr & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(tmp, phys);
		__invalidate_icache_page_alias(tmp, phys);

		clear_bit(PG_arch_1, &page->flags);
	}
#else
	if (!PageReserved(page) && !test_bit(PG_arch_1, &page->flags)
	    && (vma->vm_flags & VM_EXEC) != 0) {
		unsigned long paddr = (unsigned long)kmap_atomic(page);
		__flush_dcache_page(paddr);
		__invalidate_icache_page(paddr);
		set_bit(PG_arch_1, &page->flags);
		kunmap_atomic((void *)paddr);
	}
#endif
}

示例#8

文件： cache.c 项目： DirtyDroidX/android_kernel_htc_m8ul

extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
		unsigned long vaddr, void *dst, const void *src,
		unsigned long len)
{
	unsigned long phys = page_to_phys(page);
	unsigned long alias = !(DCACHE_ALIAS_EQ(vaddr, phys));


	if (alias) {
		unsigned long temp = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(temp, phys);
	}

	memcpy(dst, src, len);
}

示例#9

文件： cache.c 项目： JamesChenFromChina/linux

extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
		unsigned long vaddr, void *dst, const void *src,
		unsigned long len)
{
	unsigned long phys = page_to_phys(page);
	unsigned long alias = !(DCACHE_ALIAS_EQ(vaddr, phys));

	/*
	 * Flush user page if aliased. 
	 * (Note: a simply flush would be sufficient) 
	 */

	if (alias) {
		unsigned long t = TLBTEMP_BASE_1 + (vaddr & DCACHE_ALIAS_MASK);
		__flush_invalidate_dcache_page_alias(t, phys);
	}

	memcpy(dst, src, len);
}

示例#10

文件： cache.c 项目： DirtyDroidX/android_kernel_htc_m8ul

void
update_mmu_cache(struct vm_area_struct * vma, unsigned long addr, pte_t *ptep)
{
	unsigned long pfn = pte_pfn(*ptep);
	struct page *page;

	if (!pfn_valid(pfn))
		return;

	page = pfn_to_page(pfn);

	

	invalidate_itlb_mapping(addr);
	invalidate_dtlb_mapping(addr);

#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK

	if (!PageReserved(page) && test_bit(PG_arch_1, &page->flags)) {

		unsigned long vaddr = TLBTEMP_BASE_1 + (addr & DCACHE_ALIAS_MASK);
		unsigned long paddr = (unsigned long) page_address(page);
		unsigned long phys = page_to_phys(page);

		__flush_invalidate_dcache_page(paddr);

		__flush_invalidate_dcache_page_alias(vaddr, phys);
		__invalidate_icache_page_alias(vaddr, phys);

		clear_bit(PG_arch_1, &page->flags);
	}
#else
	if (!PageReserved(page) && !test_bit(PG_arch_1, &page->flags)
	    && (vma->vm_flags & VM_EXEC) != 0) {
	    	unsigned long paddr = (unsigned long) page_address(page);
		__flush_dcache_page(paddr);
		__invalidate_icache_page(paddr);
		set_bit(PG_arch_1, &page->flags);
	}
#endif
}