1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
7 #include <linux/libnvdimm.h>
8 #include <linux/device.h>
9 #include <linux/sizes.h>
10 #include <linux/mutex.h>
14 extern struct list_head nvdimm_bus_list;
15 extern struct mutex nvdimm_bus_list_mutex;
16 extern int nvdimm_major;
17 extern struct workqueue_struct *nvdimm_wq;
20 struct nvdimm_bus_descriptor *nd_desc;
21 wait_queue_head_t wait;
22 struct list_head list;
25 atomic_t ioctl_active;
26 struct list_head mapping_list;
27 struct mutex reconfig_mutex;
28 struct badrange badrange;
34 unsigned long cmd_mask;
38 struct resource *flush_wpq;
41 const struct nvdimm_security_ops *ops;
43 unsigned long ext_flags;
44 unsigned int overwrite_tmo;
45 struct kernfs_node *overwrite_state;
47 struct delayed_work dwork;
48 const struct nvdimm_fw_ops *fw_ops;
51 static inline unsigned long nvdimm_security_flags(
52 struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype)
55 const u64 state_flags = 1UL << NVDIMM_SECURITY_DISABLED
56 | 1UL << NVDIMM_SECURITY_LOCKED
57 | 1UL << NVDIMM_SECURITY_UNLOCKED
58 | 1UL << NVDIMM_SECURITY_OVERWRITE;
63 flags = nvdimm->sec.ops->get_flags(nvdimm, ptype);
64 /* disabled, locked, unlocked, and overwrite are mutually exclusive */
65 dev_WARN_ONCE(&nvdimm->dev, hweight64(flags & state_flags) > 1,
66 "reported invalid security state: %#llx\n",
67 (unsigned long long) flags);
70 int nvdimm_security_freeze(struct nvdimm *nvdimm);
71 #if IS_ENABLED(CONFIG_NVDIMM_KEYS)
72 ssize_t nvdimm_security_store(struct device *dev, const char *buf, size_t len);
73 void nvdimm_security_overwrite_query(struct work_struct *work);
75 static inline ssize_t nvdimm_security_store(struct device *dev,
76 const char *buf, size_t len)
80 static inline void nvdimm_security_overwrite_query(struct work_struct *work)
85 bool is_nvdimm(struct device *dev);
86 bool is_nd_pmem(struct device *dev);
87 bool is_nd_volatile(struct device *dev);
88 static inline bool is_nd_region(struct device *dev)
90 return is_nd_pmem(dev) || is_nd_volatile(dev);
92 static inline bool is_memory(struct device *dev)
94 return is_nd_pmem(dev) || is_nd_volatile(dev);
96 struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
97 int __init nvdimm_bus_init(void);
98 void nvdimm_bus_exit(void);
99 void nvdimm_devs_exit(void);
101 void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev);
102 void nd_region_create_ns_seed(struct nd_region *nd_region);
103 void nd_region_create_btt_seed(struct nd_region *nd_region);
104 void nd_region_create_pfn_seed(struct nd_region *nd_region);
105 void nd_region_create_dax_seed(struct nd_region *nd_region);
106 int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
107 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
108 void nd_synchronize(void);
109 void nd_device_register(struct device *dev);
111 char *nd_label_gen_id(struct nd_label_id *label_id, const uuid_t *uuid,
113 bool nd_is_uuid_unique(struct device *dev, uuid_t *uuid);
115 struct nvdimm_drvdata;
117 void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
119 int __reserve_free_pmem(struct device *dev, void *data);
120 void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
121 struct nd_mapping *nd_mapping);
123 resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
124 struct nd_mapping *nd_mapping);
125 resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
126 resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
127 struct nd_mapping *nd_mapping);
128 resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
129 int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
130 resource_size_t size);
131 resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
132 struct nd_label_id *label_id);
133 int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
134 void get_ndd(struct nvdimm_drvdata *ndd);
135 resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
136 void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
137 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
138 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
139 struct nd_namespace_common **_ndns);
140 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
141 struct nd_namespace_common **_ndns);
142 ssize_t nd_namespace_store(struct device *dev,
143 struct nd_namespace_common **_ndns, const char *buf,
145 struct nd_pfn *to_nd_pfn_safe(struct device *dev);
146 bool is_nvdimm_bus(struct device *dev);
148 #if IS_ENABLED(CONFIG_ND_CLAIM)
149 int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio,
150 resource_size_t size);
151 void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio);
153 static inline int devm_nsio_enable(struct device *dev,
154 struct nd_namespace_io *nsio, resource_size_t size)
159 static inline void devm_nsio_disable(struct device *dev,
160 struct nd_namespace_io *nsio)
164 #endif /* __ND_CORE_H__ */