149 static void free_resource(struct resource *res)  in free_resource()  argument
151 	if (!res)  in free_resource()
154 	if (!PageSlab(virt_to_head_page(res))) {  in free_resource()
156 		res->sibling = bootmem_resource_free;  in free_resource()
157 		bootmem_resource_free = res;  in free_resource()
160 		kfree(res);  in free_resource()
166 	struct resource *res = NULL;  in alloc_resource()  local
170 		res = bootmem_resource_free;  in alloc_resource()
171 		bootmem_resource_free = res->sibling;  in alloc_resource()
175 	if (res)  in alloc_resource()
176 		memset(res, 0, sizeof(struct resource));  in alloc_resource()
178 		res = kzalloc(sizeof(struct resource), flags);  in alloc_resource()
180 	return res;  in alloc_resource()
340 			       struct resource *res)  in find_next_iomem_res()  argument
344 	if (!res)  in find_next_iomem_res()
374 		*res = (struct resource) {  in find_next_iomem_res()
392 	struct resource res;  in __walk_iomem_res_desc()  local
396 	       !find_next_iomem_res(start, end, flags, desc, &res)) {  in __walk_iomem_res_desc()
397 		ret = (*func)(&res, arg);  in __walk_iomem_res_desc()
401 		start = res.end + 1;  in __walk_iomem_res_desc()
470 	struct resource res;  in walk_system_ram_range()  local
478 	       !find_next_iomem_res(start, end, flags, IORES_DESC_NONE, &res)) {  in walk_system_ram_range()
479 		pfn = PFN_UP(res.start);  in walk_system_ram_range()
480 		end_pfn = PFN_DOWN(res.end + 1);  in walk_system_ram_range()
485 		start = res.end + 1;  in walk_system_ram_range()
508 	struct resource res;  in __region_intersects()  local
512 	res.start = start;  in __region_intersects()
513 	res.end = start + size - 1;  in __region_intersects()
520 		if (resource_overlaps(p, &res))  in __region_intersects()
578 static void resource_clip(struct resource *res, resource_size_t min,  in resource_clip()  argument
581 	if (res->start < min)  in resource_clip()
582 		res->start = min;  in resource_clip()
583 	if (res->end > max)  in resource_clip()
584 		res->end = max;  in resource_clip()
764 	struct resource *res;  in lookup_resource()  local
767 	for (res = root->child; res; res = res->sibling) {  in lookup_resource()
768 		if (res->start == start)  in lookup_resource()
773 	return res;  in lookup_resource()
934 static int __adjust_resource(struct resource *res, resource_size_t start,  in __adjust_resource()  argument
937 	struct resource *tmp, *parent = res->parent;  in __adjust_resource()
947 	if (res->sibling && (res->sibling->start <= end))  in __adjust_resource()
951 	if (tmp != res) {  in __adjust_resource()
952 		while (tmp->sibling != res)  in __adjust_resource()
959 	for (tmp = res->child; tmp; tmp = tmp->sibling)  in __adjust_resource()
963 	res->start = start;  in __adjust_resource()
964 	res->end = end;  in __adjust_resource()
981 int adjust_resource(struct resource *res, resource_size_t start,  in adjust_resource()  argument
987 	result = __adjust_resource(res, start, size);  in adjust_resource()
999 	struct resource *res = alloc_resource(GFP_ATOMIC);  in __reserve_region_with_split()  local
1003 	if (!res)  in __reserve_region_with_split()
1006 	res->name = name;  in __reserve_region_with_split()
1007 	res->start = start;  in __reserve_region_with_split()
1008 	res->end = end;  in __reserve_region_with_split()
1009 	res->flags = type | IORESOURCE_BUSY;  in __reserve_region_with_split()
1010 	res->desc = IORES_DESC_NONE;  in __reserve_region_with_split()
1014 		conflict = __request_resource(parent, res);  in __reserve_region_with_split()
1018 			res = next_res;  in __reserve_region_with_split()
1024 		if (conflict->start <= res->start &&  in __reserve_region_with_split()
1025 				conflict->end >= res->end) {  in __reserve_region_with_split()
1026 			free_resource(res);  in __reserve_region_with_split()
1032 		if (conflict->start > res->start) {  in __reserve_region_with_split()
1033 			end = res->end;  in __reserve_region_with_split()
1034 			res->end = conflict->start - 1;  in __reserve_region_with_split()
1038 					free_resource(res);  in __reserve_region_with_split()
1048 			res->start = conflict->end + 1;  in __reserve_region_with_split()
1089 resource_size_t resource_alignment(struct resource *res)  in resource_alignment()  argument
1091 	switch (res->flags & (IORESOURCE_SIZEALIGN | IORESOURCE_STARTALIGN)) {  in resource_alignment()
1093 		return resource_size(res);  in resource_alignment()
1095 		return res->start;  in resource_alignment()
1117 static void revoke_iomem(struct resource *res)  in revoke_iomem()  argument
1137 	if (devmem_is_allowed(PHYS_PFN(res->start)) &&  in revoke_iomem()
1138 	    devmem_is_allowed(PHYS_PFN(res->end))) {  in revoke_iomem()
1146 	unmap_mapping_range(inode->i_mapping, res->start, resource_size(res), 1);  in revoke_iomem()
1149 static void revoke_iomem(struct resource *res) {}  in revoke_iomem()  argument
1163 static int __request_region_locked(struct resource *res, struct resource *parent,  in __request_region_locked()  argument
1169 	res->name = name;  in __request_region_locked()
1170 	res->start = start;  in __request_region_locked()
1171 	res->end = start + n - 1;  in __request_region_locked()
1176 		res->flags = resource_type(parent) | resource_ext_type(parent);  in __request_region_locked()
1177 		res->flags |= IORESOURCE_BUSY | flags;  in __request_region_locked()
1178 		res->desc = parent->desc;  in __request_region_locked()
1180 		conflict = __request_resource(parent, res);  in __request_region_locked()
1190 				conflict->name, conflict, res);  in __request_region_locked()
1226 	struct resource *res = alloc_resource(GFP_KERNEL);  in __request_region()  local
1229 	if (!res)  in __request_region()
1233 	ret = __request_region_locked(res, parent, start, n, name, flags);  in __request_region()
1237 		free_resource(res);  in __request_region()
1242 		revoke_iomem(res);  in __request_region()
1244 	return res;  in __request_region()
1268 		struct resource *res = *p;  in __release_region()  local
1270 		if (!res)  in __release_region()
1272 		if (res->start <= start && res->end >= end) {  in __release_region()
1273 			if (!(res->flags & IORESOURCE_BUSY)) {  in __release_region()
1274 				p = &res->child;  in __release_region()
1277 			if (res->start != start || res->end != end)  in __release_region()
1279 			*p = res->sibling;  in __release_region()
1281 			if (res->flags & IORESOURCE_MUXED)  in __release_region()
1283 			free_resource(res);  in __release_region()
1286 		p = &res->sibling;  in __release_region()
1323 	struct resource *res;  in release_mem_region_adjustable()  local
1343 	while ((res = *p)) {  in release_mem_region_adjustable()
1344 		if (res->start >= end)  in release_mem_region_adjustable()
1348 		if (res->start > start || res->end < end) {  in release_mem_region_adjustable()
1349 			p = &res->sibling;  in release_mem_region_adjustable()
1363 		if (!(res->flags & IORESOURCE_SYSRAM)) {  in release_mem_region_adjustable()
1367 		if (!(res->flags & IORESOURCE_MEM))  in release_mem_region_adjustable()
1370 		if (!(res->flags & IORESOURCE_BUSY)) {  in release_mem_region_adjustable()
1371 			p = &res->child;  in release_mem_region_adjustable()
1376 		if (res->start == start && res->end == end) {  in release_mem_region_adjustable()
1378 			*p = res->sibling;  in release_mem_region_adjustable()
1379 			free_resource(res);  in release_mem_region_adjustable()
1380 		} else if (res->start == start && res->end != end) {  in release_mem_region_adjustable()
1382 			WARN_ON_ONCE(__adjust_resource(res, end + 1,  in release_mem_region_adjustable()
1383 						       res->end - end));  in release_mem_region_adjustable()
1384 		} else if (res->start != start && res->end == end) {  in release_mem_region_adjustable()
1386 			WARN_ON_ONCE(__adjust_resource(res, res->start,  in release_mem_region_adjustable()
1387 						       start - res->start));  in release_mem_region_adjustable()
1398 			new_res->name = res->name;  in release_mem_region_adjustable()
1400 			new_res->end = res->end;  in release_mem_region_adjustable()
1401 			new_res->flags = res->flags;  in release_mem_region_adjustable()
1402 			new_res->desc = res->desc;  in release_mem_region_adjustable()
1403 			new_res->parent = res->parent;  in release_mem_region_adjustable()
1404 			new_res->sibling = res->sibling;  in release_mem_region_adjustable()
1407 			if (WARN_ON_ONCE(__adjust_resource(res, res->start,  in release_mem_region_adjustable()
1408 							   start - res->start)))  in release_mem_region_adjustable()
1410 			res->sibling = new_res;  in release_mem_region_adjustable()
1450 void merge_system_ram_resource(struct resource *res)  in merge_system_ram_resource()  argument
1455 	if (WARN_ON_ONCE((res->flags & flags) != flags))  in merge_system_ram_resource()
1459 	res->flags |= IORESOURCE_SYSRAM_MERGEABLE;  in merge_system_ram_resource()
1462 	cur = res->sibling;  in merge_system_ram_resource()
1463 	if (cur && system_ram_resources_mergeable(res, cur)) {  in merge_system_ram_resource()
1464 		res->end = cur->end;  in merge_system_ram_resource()
1465 		res->sibling = cur->sibling;  in merge_system_ram_resource()
1470 	cur = res->parent->child;  in merge_system_ram_resource()
1471 	while (cur && cur->sibling != res)  in merge_system_ram_resource()
1473 	if (cur && system_ram_resources_mergeable(cur, res)) {  in merge_system_ram_resource()
1474 		cur->end = res->end;  in merge_system_ram_resource()
1475 		cur->sibling = res->sibling;  in merge_system_ram_resource()
1476 		free_resource(res);  in merge_system_ram_resource()
1534 static int devm_resource_match(struct device *dev, void *res, void *data)  in devm_resource_match()  argument
1536 	struct resource **ptr = res;  in devm_resource_match()
1561 static void devm_region_release(struct device *dev, void *res)  in devm_region_release()  argument
1563 	struct region_devres *this = res;  in devm_region_release()
1568 static int devm_region_match(struct device *dev, void *res, void *match_data)  in devm_region_match()  argument
1570 	struct region_devres *this = res, *match = match_data;  in devm_region_match()
1581 	struct resource *res;  in __devm_request_region()  local
1592 	res = __request_region(parent, start, n, name, 0);  in __devm_request_region()
1593 	if (res)  in __devm_request_region()
1598 	return res;  in __devm_request_region()
1632 			struct resource *res = reserve + x;  in reserve_setup()  local
1639 				res->flags = IORESOURCE_IO;  in reserve_setup()
1642 				res->flags = IORESOURCE_MEM;  in reserve_setup()
1645 			res->name = "reserved";  in reserve_setup()
1646 			res->start = io_start;  in reserve_setup()
1647 			res->end = io_start + io_num - 1;  in reserve_setup()
1648 			res->flags |= IORESOURCE_BUSY;  in reserve_setup()
1649 			res->desc = IORES_DESC_NONE;  in reserve_setup()
1650 			res->child = NULL;  in reserve_setup()
1651 			if (request_resource(parent, res) == 0)  in reserve_setup()
1753 struct resource_entry *resource_list_create_entry(struct resource *res,  in resource_list_create_entry()  argument
1761 		entry->res = res ? res : &entry->__res;  in resource_list_create_entry()
1782 	struct resource *res;  in __request_free_mem_region()  local
1789 	res = alloc_resource(GFP_KERNEL);  in __request_free_mem_region()
1790 	if (!res)  in __request_free_mem_region()
1797 			free_resource(res);  in __request_free_mem_region()
1808 		if (__request_region_locked(res, &iomem_resource, addr, size,  in __request_free_mem_region()
1819 		res->desc = IORES_DESC_DEVICE_PRIVATE_MEMORY;  in __request_free_mem_region()
1825 		revoke_iomem(res);  in __request_free_mem_region()
1826 		return res;  in __request_free_mem_region()
1830 	free_resource(res);  in __request_free_mem_region()