14 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns)  in __nd_detach_ndns()  argument
22 	nvdimm_bus = walk_to_nvdimm_bus(&ndns->dev);  in __nd_detach_ndns()
24 	dev_WARN_ONCE(dev, ndns->claim != dev, "%s: invalid claim\n", __func__);  in __nd_detach_ndns()
27 	put_device(&ndns->dev);  in __nd_detach_ndns()
30 void nd_detach_ndns(struct device *dev,  in nd_detach_ndns()  argument
37 	get_device(&ndns->dev);  in nd_detach_ndns()
38 	nvdimm_bus_lock(&ndns->dev);  in nd_detach_ndns()
39 	__nd_detach_ndns(dev, _ndns);  in nd_detach_ndns()
40 	nvdimm_bus_unlock(&ndns->dev);  in nd_detach_ndns()
41 	put_device(&ndns->dev);  in nd_detach_ndns()
44 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,  in __nd_attach_ndns()  argument
47 	struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(&attach->dev);  in __nd_attach_ndns()
52 	dev_WARN_ONCE(dev, *_ndns, "%s: invalid claim\n", __func__);  in __nd_attach_ndns()
53 	attach->claim = dev;  in __nd_attach_ndns()
55 	get_device(&attach->dev);  in __nd_attach_ndns()
59 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,  in nd_attach_ndns()  argument
64 	nvdimm_bus_lock(&attach->dev);  in nd_attach_ndns()
65 	claimed = __nd_attach_ndns(dev, attach, _ndns);  in nd_attach_ndns()
66 	nvdimm_bus_unlock(&attach->dev);  in nd_attach_ndns()
70 static int namespace_match(struct device *dev, void *data)  in namespace_match()  argument
74 	return strcmp(name, dev_name(dev)) == 0;  in namespace_match()
77 static bool is_idle(struct device *dev, struct nd_namespace_common *ndns)  in is_idle()  argument
79 	struct nd_region *nd_region = to_nd_region(dev->parent);  in is_idle()
82 	if (is_nd_btt(dev))  in is_idle()
84 	else if (is_nd_pfn(dev))  in is_idle()
86 	else if (is_nd_dax(dev))  in is_idle()
89 	if (seed == dev || ndns || dev->driver)  in is_idle()
94 struct nd_pfn *to_nd_pfn_safe(struct device *dev)  in to_nd_pfn_safe()  argument
100 	if (is_nd_pfn(dev))  in to_nd_pfn_safe()
101 		return to_nd_pfn(dev);  in to_nd_pfn_safe()
103 	if (is_nd_dax(dev)) {  in to_nd_pfn_safe()
104 		struct nd_dax *nd_dax = to_nd_dax(dev);  in to_nd_pfn_safe()
113 static void nd_detach_and_reset(struct device *dev,  in nd_detach_and_reset()  argument
117 	__nd_detach_ndns(dev, _ndns);  in nd_detach_and_reset()
118 	if (is_idle(dev, *_ndns)) {  in nd_detach_and_reset()
119 		nd_device_unregister(dev, ND_ASYNC);  in nd_detach_and_reset()
120 	} else if (is_nd_btt(dev)) {  in nd_detach_and_reset()
121 		struct nd_btt *nd_btt = to_nd_btt(dev);  in nd_detach_and_reset()
126 	} else if (is_nd_pfn(dev) || is_nd_dax(dev)) {  in nd_detach_and_reset()
127 		struct nd_pfn *nd_pfn = to_nd_pfn_safe(dev);  in nd_detach_and_reset()
135 ssize_t nd_namespace_store(struct device *dev,  in nd_namespace_store()  argument
143 	if (dev->driver) {  in nd_namespace_store()
144 		dev_dbg(dev, "namespace already active\n");  in nd_namespace_store()
162 		nd_detach_and_reset(dev, _ndns);  in nd_namespace_store()
165 		dev_dbg(dev, "namespace already set to: %s\n",  in nd_namespace_store()
166 				dev_name(&ndns->dev));  in nd_namespace_store()
171 	found = device_find_child(dev->parent, name, namespace_match);  in nd_namespace_store()
173 		dev_dbg(dev, "'%s' not found under %s\n", name,  in nd_namespace_store()
174 				dev_name(dev->parent));  in nd_namespace_store()
186 		if (!is_nd_btt(dev)) {  in nd_namespace_store()
192 		if (!is_nd_pfn(dev)) {  in nd_namespace_store()
198 		if (!is_nd_dax(dev)) {  in nd_namespace_store()
210 		dev_dbg(dev, "%s too small to host\n", name);  in nd_namespace_store()
215 	WARN_ON_ONCE(!is_nvdimm_bus_locked(dev));  in nd_namespace_store()
216 	if (!__nd_attach_ndns(dev, ndns, _ndns)) {  in nd_namespace_store()
217 		dev_dbg(dev, "%s already claimed\n",  in nd_namespace_store()
218 				dev_name(&ndns->dev));  in nd_namespace_store()
223 	put_device(&ndns->dev); /* from device_find_child */  in nd_namespace_store()
256 	struct nd_namespace_io *nsio = to_nd_namespace_io(&ndns->dev);  in nsio_rw_bytes()
265 		dev_WARN_ONCE(&ndns->dev, 1, "request out of range\n");  in nsio_rw_bytes()
283 			cleared = nvdimm_clear_poison(&ndns->dev,  in nsio_rw_bytes()
297 	ret = nvdimm_flush(to_nd_region(ndns->dev.parent), NULL);  in nsio_rw_bytes()
304 int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio,  in devm_nsio_enable()  argument
314 	if (!devm_request_mem_region(dev, range.start, size,  in devm_nsio_enable()
315 				dev_name(&ndns->dev))) {  in devm_nsio_enable()
316 		dev_warn(dev, "could not reserve region %pR\n", &nsio->res);  in devm_nsio_enable()
321 	if (devm_init_badblocks(dev, &nsio->bb))  in devm_nsio_enable()
323 	nvdimm_badblocks_populate(to_nd_region(ndns->dev.parent), &nsio->bb,  in devm_nsio_enable()
326 	nsio->addr = devm_memremap(dev, range.start, size, ARCH_MEMREMAP_PMEM);  in devm_nsio_enable()
331 void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio)  in devm_nsio_disable()  argument
335 	devm_memunmap(dev, nsio->addr);  in devm_nsio_disable()
336 	devm_exit_badblocks(dev, &nsio->bb);  in devm_nsio_disable()
337 	devm_release_mem_region(dev, res->start, nsio->size);  in devm_nsio_disable()