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>
13 extern struct list_head nvdimm_bus_list;
14 extern struct mutex nvdimm_bus_list_mutex;
15 extern int nvdimm_major;
16 extern struct workqueue_struct *nvdimm_wq;
19 struct nvdimm_bus_descriptor *nd_desc;
20 wait_queue_head_t probe_wait;
21 struct list_head list;
24 struct list_head mapping_list;
25 struct mutex reconfig_mutex;
26 struct badrange badrange;
32 unsigned long cmd_mask;
36 struct resource *flush_wpq;
39 const struct nvdimm_security_ops *ops;
40 enum nvdimm_security_state state;
41 enum nvdimm_security_state ext_state;
42 unsigned int overwrite_tmo;
43 struct kernfs_node *overwrite_state;
45 struct delayed_work dwork;
48 static inline enum nvdimm_security_state nvdimm_security_state(
49 struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype)
54 return nvdimm->sec.ops->state(nvdimm, ptype);
56 int nvdimm_security_freeze(struct nvdimm *nvdimm);
57 #if IS_ENABLED(CONFIG_NVDIMM_KEYS)
58 int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid);
59 int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid,
60 unsigned int new_keyid,
61 enum nvdimm_passphrase_type pass_type);
62 int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid,
63 enum nvdimm_passphrase_type pass_type);
64 int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid);
65 void nvdimm_security_overwrite_query(struct work_struct *work);
67 static inline int nvdimm_security_disable(struct nvdimm *nvdimm,
72 static inline int nvdimm_security_update(struct nvdimm *nvdimm,
74 unsigned int new_keyid,
75 enum nvdimm_passphrase_type pass_type)
79 static inline int nvdimm_security_erase(struct nvdimm *nvdimm,
81 enum nvdimm_passphrase_type pass_type)
85 static inline int nvdimm_security_overwrite(struct nvdimm *nvdimm,
90 static inline void nvdimm_security_overwrite_query(struct work_struct *work)
96 * struct blk_alloc_info - tracking info for BLK dpa scanning
97 * @nd_mapping: blk region mapping boundaries
98 * @available: decremented in alias_dpa_busy as aliased PMEM is scanned
99 * @busy: decremented in blk_dpa_busy to account for ranges already
100 * handled by alias_dpa_busy
101 * @res: alias_dpa_busy interprets this a free space range that needs to
102 * be truncated to the valid BLK allocation starting DPA, blk_dpa_busy
103 * treats it as a busy range that needs the aliased PMEM ranges
106 struct blk_alloc_info {
107 struct nd_mapping *nd_mapping;
108 resource_size_t available, busy;
109 struct resource *res;
112 bool is_nvdimm(struct device *dev);
113 bool is_nd_pmem(struct device *dev);
114 bool is_nd_volatile(struct device *dev);
115 bool is_nd_blk(struct device *dev);
116 static inline bool is_nd_region(struct device *dev)
118 return is_nd_pmem(dev) || is_nd_blk(dev) || is_nd_volatile(dev);
120 static inline bool is_memory(struct device *dev)
122 return is_nd_pmem(dev) || is_nd_volatile(dev);
124 struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
125 int __init nvdimm_bus_init(void);
126 void nvdimm_bus_exit(void);
127 void nvdimm_devs_exit(void);
128 void nd_region_devs_exit(void);
129 void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
131 void nd_region_create_ns_seed(struct nd_region *nd_region);
132 void nd_region_create_btt_seed(struct nd_region *nd_region);
133 void nd_region_create_pfn_seed(struct nd_region *nd_region);
134 void nd_region_create_dax_seed(struct nd_region *nd_region);
135 void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
136 int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
137 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
138 void nd_synchronize(void);
139 int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus);
140 int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus);
141 int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus);
142 void __nd_device_register(struct device *dev);
143 int nd_match_dimm(struct device *dev, void *data);
145 char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags);
146 bool nd_is_uuid_unique(struct device *dev, u8 *uuid);
148 struct nvdimm_drvdata;
150 void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
152 int __reserve_free_pmem(struct device *dev, void *data);
153 void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
154 struct nd_mapping *nd_mapping);
156 resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
157 struct nd_mapping *nd_mapping);
158 resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
159 resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
160 struct nd_mapping *nd_mapping, resource_size_t *overlap);
161 resource_size_t nd_blk_available_dpa(struct nd_region *nd_region);
162 resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
163 int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
164 resource_size_t size);
165 resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
166 struct nd_label_id *label_id);
167 int alias_dpa_busy(struct device *dev, void *data);
168 struct resource *nsblk_add_resource(struct nd_region *nd_region,
169 struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
170 resource_size_t start);
171 int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
172 void get_ndd(struct nvdimm_drvdata *ndd);
173 resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
174 void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
175 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
176 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
177 struct nd_namespace_common **_ndns);
178 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
179 struct nd_namespace_common **_ndns);
180 ssize_t nd_namespace_store(struct device *dev,
181 struct nd_namespace_common **_ndns, const char *buf,
183 struct nd_pfn *to_nd_pfn_safe(struct device *dev);
184 #endif /* __ND_CORE_H__ */