38 static struct page *__dma_alloc(struct device *dev, size_t size,  in __dma_alloc()
41 	struct page *page, *free, *end;  in __dma_alloc()  local
54 	page = alloc_pages(gfp, order);  in __dma_alloc()
55 	if (!page)  in __dma_alloc()
57 	split_page(page, order);  in __dma_alloc()
68 	invalidate_dcache_region(phys_to_virt(page_to_phys(page)), size);  in __dma_alloc()
70 	*handle = page_to_bus(page);  in __dma_alloc()
71 	free = page + (size >> PAGE_SHIFT);  in __dma_alloc()
72 	end = page + (1 << order);  in __dma_alloc()
82 	return page;  in __dma_alloc()
86 		       struct page *page, dma_addr_t handle)  in __dma_free()  argument
88 	struct page *end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT);  in __dma_free()
90 	while (page < end)  in __dma_free()
91 		__free_page(page++);  in __dma_free()
97 	struct page *page;  in dma_alloc_coherent()  local
100 	page = __dma_alloc(dev, size, handle, gfp);  in dma_alloc_coherent()
101 	if (page)  in dma_alloc_coherent()
102 		ret = phys_to_uncached(page_to_phys(page));  in dma_alloc_coherent()
112 	struct page *page;  in dma_free_coherent()  local
117 	page = virt_to_page(addr);  in dma_free_coherent()
118 	__dma_free(dev, size, page, handle);  in dma_free_coherent()
125 	struct page *page;  in dma_alloc_writecombine()  local
128 	page = __dma_alloc(dev, size, handle, gfp);  in dma_alloc_writecombine()
129 	if (!page)  in dma_alloc_writecombine()
132 	phys = page_to_phys(page);  in dma_alloc_writecombine()
143 	struct page *page;  in dma_free_writecombine()  local
147 	page = phys_to_page(handle);  in dma_free_writecombine()
148 	__dma_free(dev, size, page, handle);  in dma_free_writecombine()