2 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
15 #include <linux/libnvdimm.h>
16 #include <linux/device.h>
17 #include <linux/sizes.h>
18 #include <linux/mutex.h>
21 extern struct list_head nvdimm_bus_list;
22 extern struct mutex nvdimm_bus_list_mutex;
23 extern int nvdimm_major;
24 extern struct workqueue_struct *nvdimm_wq;
27 struct nvdimm_bus_descriptor *nd_desc;
28 wait_queue_head_t probe_wait;
29 struct list_head list;
32 struct list_head mapping_list;
33 struct mutex reconfig_mutex;
34 struct badrange badrange;
40 unsigned long cmd_mask;
44 struct resource *flush_wpq;
47 const struct nvdimm_security_ops *ops;
48 enum nvdimm_security_state state;
49 unsigned int overwrite_tmo;
50 struct kernfs_node *overwrite_state;
52 struct delayed_work dwork;
55 static inline enum nvdimm_security_state nvdimm_security_state(
56 struct nvdimm *nvdimm)
61 return nvdimm->sec.ops->state(nvdimm);
63 int nvdimm_security_freeze(struct nvdimm *nvdimm);
64 #if IS_ENABLED(CONFIG_NVDIMM_KEYS)
65 int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid);
66 int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid,
67 unsigned int new_keyid);
68 int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid);
69 int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid);
70 void nvdimm_security_overwrite_query(struct work_struct *work);
72 static inline int nvdimm_security_disable(struct nvdimm *nvdimm,
77 static inline int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid,
78 unsigned int new_keyid)
82 static inline int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid)
86 static inline int nvdimm_security_overwrite(struct nvdimm *nvdimm,
91 static inline void nvdimm_security_overwrite_query(struct work_struct *work)
97 * struct blk_alloc_info - tracking info for BLK dpa scanning
98 * @nd_mapping: blk region mapping boundaries
99 * @available: decremented in alias_dpa_busy as aliased PMEM is scanned
100 * @busy: decremented in blk_dpa_busy to account for ranges already
101 * handled by alias_dpa_busy
102 * @res: alias_dpa_busy interprets this a free space range that needs to
103 * be truncated to the valid BLK allocation starting DPA, blk_dpa_busy
104 * treats it as a busy range that needs the aliased PMEM ranges
107 struct blk_alloc_info {
108 struct nd_mapping *nd_mapping;
109 resource_size_t available, busy;
110 struct resource *res;
113 bool is_nvdimm(struct device *dev);
114 bool is_nd_pmem(struct device *dev);
115 bool is_nd_volatile(struct device *dev);
116 bool is_nd_blk(struct device *dev);
117 static inline bool is_nd_region(struct device *dev)
119 return is_nd_pmem(dev) || is_nd_blk(dev) || is_nd_volatile(dev);
121 static inline bool is_memory(struct device *dev)
123 return is_nd_pmem(dev) || is_nd_volatile(dev);
125 struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
126 int __init nvdimm_bus_init(void);
127 void nvdimm_bus_exit(void);
128 void nvdimm_devs_exit(void);
129 void nd_region_devs_exit(void);
130 void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
132 void nd_region_create_ns_seed(struct nd_region *nd_region);
133 void nd_region_create_btt_seed(struct nd_region *nd_region);
134 void nd_region_create_pfn_seed(struct nd_region *nd_region);
135 void nd_region_create_dax_seed(struct nd_region *nd_region);
136 void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
137 int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
138 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
139 void nd_synchronize(void);
140 int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus);
141 int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus);
142 int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus);
143 void __nd_device_register(struct device *dev);
144 int nd_match_dimm(struct device *dev, void *data);
146 char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags);
147 bool nd_is_uuid_unique(struct device *dev, u8 *uuid);
149 struct nvdimm_drvdata;
151 void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
153 int __reserve_free_pmem(struct device *dev, void *data);
154 void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
155 struct nd_mapping *nd_mapping);
157 resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
158 struct nd_mapping *nd_mapping);
159 resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
160 resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
161 struct nd_mapping *nd_mapping, resource_size_t *overlap);
162 resource_size_t nd_blk_available_dpa(struct nd_region *nd_region);
163 resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
164 resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
165 struct nd_label_id *label_id);
166 int alias_dpa_busy(struct device *dev, void *data);
167 struct resource *nsblk_add_resource(struct nd_region *nd_region,
168 struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
169 resource_size_t start);
170 int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
171 void get_ndd(struct nvdimm_drvdata *ndd);
172 resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
173 void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
174 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
175 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
176 struct nd_namespace_common **_ndns);
177 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
178 struct nd_namespace_common **_ndns);
179 ssize_t nd_namespace_store(struct device *dev,
180 struct nd_namespace_common **_ndns, const char *buf,
182 struct nd_pfn *to_nd_pfn_safe(struct device *dev);
183 #endif /* __ND_CORE_H__ */