drivers/dma-buf/udmabuf.c

36 	struct udmabuf *ubuf = vma->vm_private_data;
39 	if (pgoff >= ubuf->pagecount)
41 	vmf->page = ubuf->pages[pgoff];
52 	struct udmabuf *ubuf = buf->priv;
58 	vma->vm_private_data = ubuf;
64 	struct udmabuf *ubuf = buf->priv;
69 	vaddr = vm_map_ram(ubuf->pages, ubuf->pagecount, -1);
79 	struct udmabuf *ubuf = buf->priv;
83 	vm_unmap_ram(map->vaddr, ubuf->pagecount);
89 	struct udmabuf *ubuf = buf->priv;
96 	ret = sg_alloc_table_from_pages(sg, ubuf->pages, ubuf->pagecount,
97 					0, ubuf->pagecount << PAGE_SHIFT,
135 	struct udmabuf *ubuf = buf->priv;
136 	struct device *dev = ubuf->device->this_device;
139 	if (ubuf->sg)
140 		put_sg_table(dev, ubuf->sg, DMA_BIDIRECTIONAL);
142 	for (pg = 0; pg < ubuf->pagecount; pg++)
143 		put_page(ubuf->pages[pg]);
144 	kfree(ubuf->pages);
145 	kfree(ubuf);
151 	struct udmabuf *ubuf = buf->priv;
152 	struct device *dev = ubuf->device->this_device;
155 	if (!ubuf->sg) {
156 		ubuf->sg = get_sg_table(dev, buf, direction);
157 		if (IS_ERR(ubuf->sg)) {
158 			ret = PTR_ERR(ubuf->sg);
159 			ubuf->sg = NULL;
162 		dma_sync_sg_for_cpu(dev, ubuf->sg->sgl, ubuf->sg->nents,
172 	struct udmabuf *ubuf = buf->priv;
173 	struct device *dev = ubuf->device->this_device;
175 	if (!ubuf->sg)
178 	dma_sync_sg_for_device(dev, ubuf->sg->sgl, ubuf->sg->nents, direction);
204 	struct udmabuf *ubuf;
211 	ubuf = kzalloc(sizeof(*ubuf), GFP_KERNEL);
212 	if (!ubuf)
221 		ubuf->pagecount += list[i].size >> PAGE_SHIFT;
222 		if (ubuf->pagecount > pglimit)
226 	if (!ubuf->pagecount)
229 	ubuf->pages = kmalloc_array(ubuf->pagecount, sizeof(*ubuf->pages),
231 	if (!ubuf->pages) {
260 			ubuf->pages[pgbuf++] = page;
267 	exp_info.size = ubuf->pagecount << PAGE_SHIFT;
268 	exp_info.priv = ubuf;
271 	ubuf->device = device;
285 		put_page(ubuf->pages[--pgbuf]);
288 	kfree(ubuf->pages);
289 	kfree(ubuf);