23 	struct page **pages;  member
49 	 * Ensure that the allocated pages are zeroed, and that any data  in __clear_buffer()
62 	struct page **pages;  in __alloc_buffer()  local
65 	pages = kvzalloc(array_size, GFP_KERNEL);  in __alloc_buffer()
66 	if (!pages)  in __alloc_buffer()
74 		pages[i] = alloc_pages(gfp, order);  in __alloc_buffer()
75 		while (!pages[i] && order)  in __alloc_buffer()
76 			pages[i] = alloc_pages(gfp, --order);  in __alloc_buffer()
77 		if (!pages[i])  in __alloc_buffer()
81 			split_page(pages[i], order);  in __alloc_buffer()
84 				pages[i + j] = pages[i] + j;  in __alloc_buffer()
87 		__clear_buffer(pages[i], PAGE_SIZE << order, attrs);  in __alloc_buffer()
92 	return pages;  in __alloc_buffer()
95 		if (pages[i])  in __alloc_buffer()
96 			__free_pages(pages[i], 0);  in __alloc_buffer()
97 	kvfree(pages);  in __alloc_buffer()
101 static void __free_buffer(struct page **pages, size_t size, unsigned long attrs)  in __free_buffer()  argument
106 	for (i = 0; i < count && pages[i]; i++) {  in __free_buffer()
107 		__clear_buffer(pages[i], PAGE_SIZE, attrs);  in __free_buffer()
108 		__free_pages(pages[i], 0);  in __free_buffer()
111 	kvfree(pages);  in __free_buffer()
162 	struct page **pages;  in ipu6_dma_alloc()  local
179 	pages = __alloc_buffer(size, gfp, attrs);  in ipu6_dma_alloc()
180 	if (!pages)  in ipu6_dma_alloc()
186 		pci_dma_addr = dma_map_page_attrs(&pdev->dev, pages[i], 0,  in ipu6_dma_alloc()
209 	info->vaddr = vmap(pages, count, VM_USERMAP, PAGE_KERNEL);  in ipu6_dma_alloc()
215 	info->pages = pages;  in ipu6_dma_alloc()
233 	__free_buffer(pages, size, attrs);  in ipu6_dma_alloc()
252 	struct page **pages;  in ipu6_dma_free()  local
265 	if (WARN_ON(!info->pages))  in ipu6_dma_free()
272 	pages = info->pages;  in ipu6_dma_free()
287 	__free_buffer(pages, size, attrs);  in ipu6_dma_free()
322 				     info->pages[i]);  in ipu6_dma_mmap()
397 	dev_dbg(dev, "dmamap trying to map %d ents %zu pages\n",  in ipu6_dma_map_sg()
428 	dev_dbg(dev, "dmamap %d ents %zu pages mapped\n", nents, npages);  in ipu6_dma_map_sg()
481 	if (WARN_ON(!info->pages))  in ipu6_dma_get_sgtable()
486 	ret = sg_alloc_table_from_pages(sgt, info->pages, n_pages, 0, size,  in ipu6_dma_get_sgtable()