sh/kernel/io_trapped.c

41 int register_trapped_io(struct trapped_io *tiop)
52 	if ((unsigned long)tiop & (PAGE_SIZE - 1))
55 	for (k = 0; k < tiop->num_resources; k++) {
56 		res = tiop->resource + k;
71 		pages[k] = virt_to_page(tiop);
73 	tiop->virt_base = vmap(pages, n, VM_MAP, PAGE_NONE);
74 	if (!tiop->virt_base)
78 	for (k = 0; k < tiop->num_resources; k++) {
79 		res = tiop->resource + k;
81 		       (unsigned long)(tiop->virt_base + len),
87 	tiop->magic = IO_TRAPPED_MAGIC;
88 	INIT_LIST_HEAD(&tiop->list);
92 		list_add(&tiop->list, &trapped_io);
96 		list_add(&tiop->list, &trapped_mem);
111 	struct trapped_io *tiop;
117 	list_for_each_entry(tiop, list, list) {
119 		for (k = 0; k < tiop->num_resources; k++) {
120 			res = tiop->resource + k;
123 				return tiop->virt_base + voffs;
165 static unsigned long lookup_address(struct trapped_io *tiop,
169 	unsigned long vaddr = (unsigned long)tiop->virt_base;
173 	for (k = 0; k < tiop->num_resources; k++) {
174 		res = tiop->resource + k;
223 	struct trapped_io *tiop;
228 	tiop = lookup_tiop(src_addr);
229 	WARN_ON(!tiop || (tiop->magic != IO_TRAPPED_MAGIC));
231 	src_addr = lookup_address(tiop, src_addr);
237 			      (tiop->minimum_bus_width / 8)),
246 	struct trapped_io *tiop;
251 	tiop = lookup_tiop(dst_addr);
252 	WARN_ON(!tiop || (tiop->magic != IO_TRAPPED_MAGIC));
254 	dst_addr = lookup_address(tiop, dst_addr);
260 					(tiop->minimum_bus_width / 8)));