163 static void free_resource(struct resource *res)  in free_resource()  argument
171 	if (res && PageSlab(virt_to_head_page(res)))  in free_resource()
172 		kfree(res);  in free_resource()
342 			       struct resource *res)  in find_next_iomem_res()  argument
348 	if (!res)  in find_next_iomem_res()
380 		*res = (struct resource) {  in find_next_iomem_res()
398 	struct resource res;  in __walk_iomem_res_desc()  local
402 	       !find_next_iomem_res(start, end, flags, desc, &res)) {  in __walk_iomem_res_desc()
403 		ret = (*func)(&res, arg);  in __walk_iomem_res_desc()
407 		start = res.end + 1;  in __walk_iomem_res_desc()
462 	struct resource res, *rams;  in walk_system_ram_res_rev()  local
475 		(!find_next_iomem_res(start, end, flags, IORES_DESC_NONE, &res))) {  in walk_system_ram_res_rev()
489 		rams[i++] = res;  in walk_system_ram_res_rev()
490 		start = res.end + 1;  in walk_system_ram_res_rev()
528 	struct resource res;  in walk_system_ram_range()  local
536 	       !find_next_iomem_res(start, end, flags, IORES_DESC_NONE, &res)) {  in walk_system_ram_range()
537 		pfn = PFN_UP(res.start);  in walk_system_ram_range()
538 		end_pfn = PFN_DOWN(res.end + 1);  in walk_system_ram_range()
543 		start = res.end + 1;  in walk_system_ram_range()
569 	struct resource res, o;  in __region_intersects()  local
572 	res = DEFINE_RES(start, size, 0);  in __region_intersects()
575 		if (!resource_intersection(p, &res, &o))  in __region_intersects()
595 			if (!resource_overlaps(dp, &res))  in __region_intersects()
663 static void resource_clip(struct resource *res, resource_size_t min,  in resource_clip()  argument
666 	if (res->start < min)  in resource_clip()
667 		res->start = min;  in resource_clip()
668 	if (res->end > max)  in resource_clip()
669 		res->end = max;  in resource_clip()
859 	struct resource *res;  in lookup_resource()  local
862 	for (res = root->child; res; res = res->sibling) {  in lookup_resource()
863 		if (res->start == start)  in lookup_resource()
868 	return res;  in lookup_resource()
1036 static int __adjust_resource(struct resource *res, resource_size_t start,  in __adjust_resource()  argument
1039 	struct resource *tmp, *parent = res->parent;  in __adjust_resource()
1049 	if (res->sibling && (res->sibling->start <= end))  in __adjust_resource()
1053 	if (tmp != res) {  in __adjust_resource()
1054 		while (tmp->sibling != res)  in __adjust_resource()
1061 	for (tmp = res->child; tmp; tmp = tmp->sibling)  in __adjust_resource()
1065 	res->start = start;  in __adjust_resource()
1066 	res->end = end;  in __adjust_resource()
1083 int adjust_resource(struct resource *res, resource_size_t start,  in adjust_resource()  argument
1089 	result = __adjust_resource(res, start, size);  in adjust_resource()
1101 	struct resource *res = alloc_resource(GFP_ATOMIC);  in __reserve_region_with_split()  local
1105 	if (!res)  in __reserve_region_with_split()
1108 	res->name = name;  in __reserve_region_with_split()
1109 	res->start = start;  in __reserve_region_with_split()
1110 	res->end = end;  in __reserve_region_with_split()
1111 	res->flags = type | IORESOURCE_BUSY;  in __reserve_region_with_split()
1112 	res->desc = IORES_DESC_NONE;  in __reserve_region_with_split()
1116 		conflict = __request_resource(parent, res);  in __reserve_region_with_split()
1120 			res = next_res;  in __reserve_region_with_split()
1126 		if (conflict->start <= res->start &&  in __reserve_region_with_split()
1127 				conflict->end >= res->end) {  in __reserve_region_with_split()
1128 			free_resource(res);  in __reserve_region_with_split()
1134 		if (conflict->start > res->start) {  in __reserve_region_with_split()
1135 			end = res->end;  in __reserve_region_with_split()
1136 			res->end = conflict->start - 1;  in __reserve_region_with_split()
1140 					free_resource(res);  in __reserve_region_with_split()
1150 			res->start = conflict->end + 1;  in __reserve_region_with_split()
1191 resource_size_t resource_alignment(struct resource *res)  in resource_alignment()  argument
1193 	switch (res->flags & (IORESOURCE_SIZEALIGN | IORESOURCE_STARTALIGN)) {  in resource_alignment()
1195 		return resource_size(res);  in resource_alignment()
1197 		return res->start;  in resource_alignment()
1219 static void revoke_iomem(struct resource *res)  in revoke_iomem()  argument
1239 	if (devmem_is_allowed(PHYS_PFN(res->start)) &&  in revoke_iomem()
1240 	    devmem_is_allowed(PHYS_PFN(res->end))) {  in revoke_iomem()
1248 	unmap_mapping_range(inode->i_mapping, res->start, resource_size(res), 1);  in revoke_iomem()
1251 static void revoke_iomem(struct resource *res) {}  in revoke_iomem()  argument
1265 static int __request_region_locked(struct resource *res, struct resource *parent,  in __request_region_locked()  argument
1271 	res->name = name;  in __request_region_locked()
1272 	res->start = start;  in __request_region_locked()
1273 	res->end = start + n - 1;  in __request_region_locked()
1278 		res->flags = resource_type(parent) | resource_ext_type(parent);  in __request_region_locked()
1279 		res->flags |= IORESOURCE_BUSY | flags;  in __request_region_locked()
1280 		res->desc = parent->desc;  in __request_region_locked()
1282 		conflict = __request_resource(parent, res);  in __request_region_locked()
1293 				conflict->name, conflict, res);  in __request_region_locked()
1329 	struct resource *res = alloc_resource(GFP_KERNEL);  in __request_region()  local
1332 	if (!res)  in __request_region()
1336 	ret = __request_region_locked(res, parent, start, n, name, flags);  in __request_region()
1340 		free_resource(res);  in __request_region()
1345 		revoke_iomem(res);  in __request_region()
1347 	return res;  in __request_region()
1371 		struct resource *res = *p;  in __release_region()  local
1373 		if (!res)  in __release_region()
1375 		if (res->start <= start && res->end >= end) {  in __release_region()
1376 			if (!(res->flags & IORESOURCE_BUSY)) {  in __release_region()
1377 				p = &res->child;  in __release_region()
1380 			if (res->start != start || res->end != end)  in __release_region()
1382 			*p = res->sibling;  in __release_region()
1384 			if (res->flags & IORESOURCE_MUXED)  in __release_region()
1386 			free_resource(res);  in __release_region()
1389 		p = &res->sibling;  in __release_region()
1463 	struct resource *res;  in release_mem_region_adjustable()  local
1483 	while ((res = *p)) {  in release_mem_region_adjustable()
1484 		if (res->start >= end)  in release_mem_region_adjustable()
1488 		if (res->start > start || res->end < end) {  in release_mem_region_adjustable()
1489 			p = &res->sibling;  in release_mem_region_adjustable()
1493 		if (!(res->flags & IORESOURCE_MEM))  in release_mem_region_adjustable()
1496 		if (!(res->flags & IORESOURCE_BUSY)) {  in release_mem_region_adjustable()
1497 			p = &res->child;  in release_mem_region_adjustable()
1502 		if (res->start == start && res->end == end) {  in release_mem_region_adjustable()
1504 			*p = res->sibling;  in release_mem_region_adjustable()
1505 			free_resource(res);  in release_mem_region_adjustable()
1506 		} else if (res->start == start && res->end != end) {  in release_mem_region_adjustable()
1508 			WARN_ON_ONCE(__adjust_resource(res, end + 1,  in release_mem_region_adjustable()
1509 						       res->end - end));  in release_mem_region_adjustable()
1510 		} else if (res->start != start && res->end == end) {  in release_mem_region_adjustable()
1512 			WARN_ON_ONCE(__adjust_resource(res, res->start,  in release_mem_region_adjustable()
1513 						       start - res->start));  in release_mem_region_adjustable()
1524 			new_res->name = res->name;  in release_mem_region_adjustable()
1526 			new_res->end = res->end;  in release_mem_region_adjustable()
1527 			new_res->flags = res->flags;  in release_mem_region_adjustable()
1528 			new_res->desc = res->desc;  in release_mem_region_adjustable()
1529 			new_res->parent = res->parent;  in release_mem_region_adjustable()
1530 			new_res->sibling = res->sibling;  in release_mem_region_adjustable()
1532 			reparent_children_after_split(res, new_res, end);  in release_mem_region_adjustable()
1534 			if (WARN_ON_ONCE(__adjust_resource(res, res->start,  in release_mem_region_adjustable()
1535 							   start - res->start)))  in release_mem_region_adjustable()
1537 			res->sibling = new_res;  in release_mem_region_adjustable()
1577 void merge_system_ram_resource(struct resource *res)  in merge_system_ram_resource()  argument
1582 	if (WARN_ON_ONCE((res->flags & flags) != flags))  in merge_system_ram_resource()
1586 	res->flags |= IORESOURCE_SYSRAM_MERGEABLE;  in merge_system_ram_resource()
1589 	cur = res->sibling;  in merge_system_ram_resource()
1590 	if (cur && system_ram_resources_mergeable(res, cur)) {  in merge_system_ram_resource()
1591 		res->end = cur->end;  in merge_system_ram_resource()
1592 		res->sibling = cur->sibling;  in merge_system_ram_resource()
1597 	cur = res->parent->child;  in merge_system_ram_resource()
1598 	while (cur && cur->sibling != res)  in merge_system_ram_resource()
1600 	if (cur && system_ram_resources_mergeable(cur, res)) {  in merge_system_ram_resource()
1601 		cur->end = res->end;  in merge_system_ram_resource()
1602 		cur->sibling = res->sibling;  in merge_system_ram_resource()
1603 		free_resource(res);  in merge_system_ram_resource()
1661 static int devm_resource_match(struct device *dev, void *res, void *data)  in devm_resource_match()  argument
1663 	struct resource **ptr = res;  in devm_resource_match()
1688 static void devm_region_release(struct device *dev, void *res)  in devm_region_release()  argument
1690 	struct region_devres *this = res;  in devm_region_release()
1695 static int devm_region_match(struct device *dev, void *res, void *match_data)  in devm_region_match()  argument
1697 	struct region_devres *this = res, *match = match_data;  in devm_region_match()
1708 	struct resource *res;  in __devm_request_region()  local
1719 	res = __request_region(parent, start, n, name, 0);  in __devm_request_region()
1720 	if (res)  in __devm_request_region()
1725 	return res;  in __devm_request_region()
1758 			struct resource *res = reserve + x;  in reserve_setup()  local
1765 				*res = DEFINE_RES_IO_NAMED(io_start, io_num, "reserved");  in reserve_setup()
1768 				*res = DEFINE_RES_MEM_NAMED(io_start, io_num, "reserved");  in reserve_setup()
1771 			res->flags |= IORESOURCE_BUSY;  in reserve_setup()
1772 			if (request_resource(parent, res) == 0)  in reserve_setup()
1887 struct resource_entry *resource_list_create_entry(struct resource *res,  in resource_list_create_entry()  argument
1895 		entry->res = res ? res : &entry->__res;  in resource_list_create_entry()
1956 	struct resource *res = _res;  in remove_free_mem_region()  local
1958 	if (res->parent)  in remove_free_mem_region()
1959 		remove_resource(res);  in remove_free_mem_region()
1960 	free_resource(res);  in remove_free_mem_region()
1970 	struct resource *res;  in get_free_mem_region()  local
1975 	res = alloc_resource(GFP_KERNEL);  in get_free_mem_region()
1976 	if (!res)  in get_free_mem_region()
1983 			free_resource(res);  in get_free_mem_region()
1987 		if (devm_add_action_or_reset(dev, remove_free_mem_region, res))  in get_free_mem_region()
2000 			if (__request_region_locked(res, &iomem_resource, addr,  in get_free_mem_region()
2011 			res->desc = desc;  in get_free_mem_region()
2019 			revoke_iomem(res);  in get_free_mem_region()
2021 			*res = DEFINE_RES_NAMED_DESC(addr, size, name, IORESOURCE_MEM, desc);  in get_free_mem_region()
2027 			if (__insert_resource(base, res) || res->child)  in get_free_mem_region()
2033 		return res;  in get_free_mem_region()
2038 		free_resource(res);  in get_free_mem_region()
2041 		devm_release_action(dev, remove_free_mem_region, res);  in get_free_mem_region()