drivers/misc/fastrpc.c

312 	struct fastrpc_map *map;
314 	map = container_of(ref, struct fastrpc_map, refcount);
316 	if (map->table) {
317 		if (map->attr & FASTRPC_ATTR_SECUREMAP) {
319 			int vmid = map->fl->cctx->vmperms[0].vmid;
325 			err = qcom_scm_assign_mem(map->phys, map->size,
328 				dev_err(map->fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
329 						map->phys, map->size, err);
333 		dma_buf_unmap_attachment_unlocked(map->attach, map->table,
335 		dma_buf_detach(map->buf, map->attach);
336 		dma_buf_put(map->buf);
339 	if (map->fl) {
340 		spin_lock(&map->fl->lock);
341 		list_del(&map->node);
342 		spin_unlock(&map->fl->lock);
343 		map->fl = NULL;
346 	kfree(map);
349 static void fastrpc_map_put(struct fastrpc_map *map)
351 	if (map)
352 		kref_put(&map->refcount, fastrpc_free_map);
355 static int fastrpc_map_get(struct fastrpc_map *map)
357 	if (!map)
360 	return kref_get_unless_zero(&map->refcount) ? 0 : -ENOENT;
368 	struct fastrpc_map *map = NULL;
372 	list_for_each_entry(map, &fl->maps, node) {
373 		if (map->fd != fd)
377 			ret = fastrpc_map_get(map);
379 				dev_dbg(sess->dev, "%s: Failed to get map fd=%d ret=%d\n",
385 		*ppmap = map;
723 static int fastrpc_vmap(struct dma_buf *dmabuf, struct iosys_map *map)
727 	iosys_map_set_vaddr(map, buf->virt);
758 	struct fastrpc_map *map = NULL;
765 	map = kzalloc(sizeof(*map), GFP_KERNEL);
766 	if (!map)
769 	INIT_LIST_HEAD(&map->node);
770 	kref_init(&map->refcount);
772 	map->fl = fl;
773 	map->fd = fd;
774 	map->buf = dma_buf_get(fd);
775 	if (IS_ERR(map->buf)) {
776 		err = PTR_ERR(map->buf);
780 	map->attach = dma_buf_attach(map->buf, sess->dev);
781 	if (IS_ERR(map->attach)) {
783 		err = PTR_ERR(map->attach);
787 	table = dma_buf_map_attachment_unlocked(map->attach, DMA_BIDIRECTIONAL);
792 	map->table = table;
795 		map->phys = sg_phys(map->table->sgl);
797 		map->phys = sg_dma_address(map->table->sgl);
798 		map->phys += ((u64)fl->sctx->sid << 32);
800 	map->size = len;
801 	map->va = sg_virt(map->table->sgl);
802 	map->len = len;
816 		map->attr = attr;
817 		err = qcom_scm_assign_mem(map->phys, (u64)map->size, &src_perms, dst_perms, 2);
820 					map->phys, map->size, err);
825 	list_add_tail(&map->node, &fl->maps);
827 	*ppmap = map;
832 	dma_buf_detach(map->buf, map->attach);
834 	dma_buf_put(map->buf);
836 	fastrpc_map_put(map);
916 			dev_err(dev, "Error Creating map %d\n", err);
1359 	struct fastrpc_map *map = NULL;
1405 		err = fastrpc_map_create(fl, init.filefd, init.filelen, 0, &map);
1462 	fastrpc_map_put(map);
1520 	struct fastrpc_map *map, *m;
1538 	list_for_each_entry_safe(map, m, &fl->maps, node)
1539 		fastrpc_map_put(map);
1955 	struct fastrpc_map *map = NULL, *iter, *m;
1964 			map = iter;
1971 	if (!map) {
1972 		dev_err(dev, "map not in list\n");
1977 	req_msg.len = map->len;
1978 	req_msg.vaddrin = map->raddr;
1979 	req_msg.fd = map->fd;
1988 		dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n",  map->fd, map->raddr);
1991 	fastrpc_map_put(map);
2015 	struct fastrpc_map *map = NULL;
2023 	err = fastrpc_map_create(fl, req.fd, req.length, 0, &map);
2025 		dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
2033 	map->va = (void *) (uintptr_t) req.vaddrin;
2041 	pages.addr = map->phys;
2042 	pages.size = map->size;
2057 			req.fd, req.vaddrin, map->size);
2062 	map->raddr = rsp_msg.vaddr;
2070 		req_unmap.length = map->size;
2078 	fastrpc_map_put(map);