53 struct nvdimm_map {  struct
66 static struct nvdimm_map *find_nvdimm_map(struct device *dev,  in find_nvdimm_map()  argument
70 	struct nvdimm_map *nvdimm_map;  in find_nvdimm_map()  local
72 	list_for_each_entry(nvdimm_map, &nvdimm_bus->mapping_list, list)  in find_nvdimm_map()
73 		if (nvdimm_map->offset == offset)  in find_nvdimm_map()
74 			return nvdimm_map;  in find_nvdimm_map()
78 static struct nvdimm_map *alloc_nvdimm_map(struct device *dev,  in alloc_nvdimm_map()
82 	struct nvdimm_map *nvdimm_map;  in alloc_nvdimm_map()  local
84 	nvdimm_map = kzalloc(sizeof(*nvdimm_map), GFP_KERNEL);  in alloc_nvdimm_map()
85 	if (!nvdimm_map)  in alloc_nvdimm_map()
88 	INIT_LIST_HEAD(&nvdimm_map->list);  in alloc_nvdimm_map()
89 	nvdimm_map->nvdimm_bus = nvdimm_bus;  in alloc_nvdimm_map()
90 	nvdimm_map->offset = offset;  in alloc_nvdimm_map()
91 	nvdimm_map->flags = flags;  in alloc_nvdimm_map()
92 	nvdimm_map->size = size;  in alloc_nvdimm_map()
93 	kref_init(&nvdimm_map->kref);  in alloc_nvdimm_map()
102 		nvdimm_map->mem = memremap(offset, size, flags);  in alloc_nvdimm_map()
104 		nvdimm_map->iomem = ioremap(offset, size);  in alloc_nvdimm_map()
106 	if (!nvdimm_map->mem)  in alloc_nvdimm_map()
111 	list_add(&nvdimm_map->list, &nvdimm_bus->mapping_list);  in alloc_nvdimm_map()
113 	return nvdimm_map;  in alloc_nvdimm_map()
118 	kfree(nvdimm_map);  in alloc_nvdimm_map()
125 	struct nvdimm_map *nvdimm_map;  in nvdimm_map_release()  local
127 	nvdimm_map = container_of(kref, struct nvdimm_map, kref);  in nvdimm_map_release()
128 	nvdimm_bus = nvdimm_map->nvdimm_bus;  in nvdimm_map_release()
130 	dev_dbg(&nvdimm_bus->dev, "%pa\n", &nvdimm_map->offset);  in nvdimm_map_release()
131 	list_del(&nvdimm_map->list);  in nvdimm_map_release()
132 	if (nvdimm_map->flags)  in nvdimm_map_release()
133 		memunmap(nvdimm_map->mem);  in nvdimm_map_release()
135 		iounmap(nvdimm_map->iomem);  in nvdimm_map_release()
136 	release_mem_region(nvdimm_map->offset, nvdimm_map->size);  in nvdimm_map_release()
137 	kfree(nvdimm_map);  in nvdimm_map_release()
142 	struct nvdimm_map *nvdimm_map = data;  in nvdimm_map_put()  local
143 	struct nvdimm_bus *nvdimm_bus = nvdimm_map->nvdimm_bus;  in nvdimm_map_put()
146 	kref_put(&nvdimm_map->kref, nvdimm_map_release);  in nvdimm_map_put()
160 	struct nvdimm_map *nvdimm_map;  in devm_nvdimm_memremap()  local
163 	nvdimm_map = find_nvdimm_map(dev, offset);  in devm_nvdimm_memremap()
164 	if (!nvdimm_map)  in devm_nvdimm_memremap()
165 		nvdimm_map = alloc_nvdimm_map(dev, offset, size, flags);  in devm_nvdimm_memremap()
167 		kref_get(&nvdimm_map->kref);  in devm_nvdimm_memremap()
170 	if (!nvdimm_map)  in devm_nvdimm_memremap()
173 	if (devm_add_action_or_reset(dev, nvdimm_map_put, nvdimm_map))  in devm_nvdimm_memremap()
176 	return nvdimm_map->mem;  in devm_nvdimm_memremap()