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5b497af4 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
b94d5230 DW |
2 | /* |
3 | * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. | |
b94d5230 DW |
4 | */ |
5 | #ifndef __ND_CORE_H__ | |
6 | #define __ND_CORE_H__ | |
7 | #include <linux/libnvdimm.h> | |
8 | #include <linux/device.h> | |
eaf96153 DW |
9 | #include <linux/sizes.h> |
10 | #include <linux/mutex.h> | |
1b40e09a | 11 | #include <linux/nd.h> |
b94d5230 | 12 | |
e6dfb2de DW |
13 | extern struct list_head nvdimm_bus_list; |
14 | extern struct mutex nvdimm_bus_list_mutex; | |
62232e45 | 15 | extern int nvdimm_major; |
7d988097 | 16 | extern struct workqueue_struct *nvdimm_wq; |
e6dfb2de | 17 | |
b94d5230 DW |
18 | struct nvdimm_bus { |
19 | struct nvdimm_bus_descriptor *nd_desc; | |
eaf96153 | 20 | wait_queue_head_t probe_wait; |
45def22c | 21 | struct list_head list; |
b94d5230 | 22 | struct device dev; |
eaf96153 | 23 | int id, probe_active; |
29b9aa0a | 24 | struct list_head mapping_list; |
3d88002e | 25 | struct mutex reconfig_mutex; |
aa9ad44a | 26 | struct badrange badrange; |
b94d5230 | 27 | }; |
45def22c | 28 | |
e6dfb2de DW |
29 | struct nvdimm { |
30 | unsigned long flags; | |
31 | void *provider_data; | |
e3654eca | 32 | unsigned long cmd_mask; |
e6dfb2de | 33 | struct device dev; |
eaf96153 | 34 | atomic_t busy; |
e5ae3b25 DW |
35 | int id, num_flush; |
36 | struct resource *flush_wpq; | |
d6548ae4 | 37 | const char *dimm_id; |
f2989396 DJ |
38 | struct { |
39 | const struct nvdimm_security_ops *ops; | |
40 | enum nvdimm_security_state state; | |
89fa9d8e | 41 | enum nvdimm_security_state ext_state; |
7d988097 DJ |
42 | unsigned int overwrite_tmo; |
43 | struct kernfs_node *overwrite_state; | |
f2989396 | 44 | } sec; |
7d988097 | 45 | struct delayed_work dwork; |
e6dfb2de DW |
46 | }; |
47 | ||
f2989396 | 48 | static inline enum nvdimm_security_state nvdimm_security_state( |
faa8bd6e | 49 | struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype) |
f2989396 DJ |
50 | { |
51 | if (!nvdimm->sec.ops) | |
52 | return -ENXIO; | |
53 | ||
faa8bd6e | 54 | return nvdimm->sec.ops->state(nvdimm, ptype); |
f2989396 | 55 | } |
37833fb7 | 56 | int nvdimm_security_freeze(struct nvdimm *nvdimm); |
03b65b22 DJ |
57 | #if IS_ENABLED(CONFIG_NVDIMM_KEYS) |
58 | int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid); | |
d2a4ac73 | 59 | int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid, |
89fa9d8e DJ |
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); | |
7d988097 DJ |
64 | int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid); |
65 | void nvdimm_security_overwrite_query(struct work_struct *work); | |
03b65b22 DJ |
66 | #else |
67 | static inline int nvdimm_security_disable(struct nvdimm *nvdimm, | |
68 | unsigned int keyid) | |
69 | { | |
70 | return -EOPNOTSUPP; | |
71 | } | |
89fa9d8e DJ |
72 | static inline int nvdimm_security_update(struct nvdimm *nvdimm, |
73 | unsigned int keyid, | |
74 | unsigned int new_keyid, | |
75 | enum nvdimm_passphrase_type pass_type) | |
d2a4ac73 DJ |
76 | { |
77 | return -EOPNOTSUPP; | |
78 | } | |
89fa9d8e DJ |
79 | static inline int nvdimm_security_erase(struct nvdimm *nvdimm, |
80 | unsigned int keyid, | |
81 | enum nvdimm_passphrase_type pass_type) | |
64e77c8c DJ |
82 | { |
83 | return -EOPNOTSUPP; | |
84 | } | |
7d988097 DJ |
85 | static inline int nvdimm_security_overwrite(struct nvdimm *nvdimm, |
86 | unsigned int keyid) | |
87 | { | |
88 | return -EOPNOTSUPP; | |
89 | } | |
90 | static inline void nvdimm_security_overwrite_query(struct work_struct *work) | |
91 | { | |
92 | } | |
03b65b22 | 93 | #endif |
f2989396 | 94 | |
762d067d DW |
95 | /** |
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 | |
104 | * truncated. | |
105 | */ | |
106 | struct blk_alloc_info { | |
107 | struct nd_mapping *nd_mapping; | |
108 | resource_size_t available, busy; | |
109 | struct resource *res; | |
110 | }; | |
111 | ||
3d88002e | 112 | bool is_nvdimm(struct device *dev); |
3d88002e | 113 | bool is_nd_pmem(struct device *dev); |
c9e582aa | 114 | bool is_nd_volatile(struct device *dev); |
047fc8a1 | 115 | bool is_nd_blk(struct device *dev); |
c9e582aa DW |
116 | static inline bool is_nd_region(struct device *dev) |
117 | { | |
118 | return is_nd_pmem(dev) || is_nd_blk(dev) || is_nd_volatile(dev); | |
119 | } | |
120 | static inline bool is_memory(struct device *dev) | |
121 | { | |
122 | return is_nd_pmem(dev) || is_nd_volatile(dev); | |
123 | } | |
e6dfb2de | 124 | struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev); |
45def22c | 125 | int __init nvdimm_bus_init(void); |
4d88a97a | 126 | void nvdimm_bus_exit(void); |
b354aba0 DW |
127 | void nvdimm_devs_exit(void); |
128 | void nd_region_devs_exit(void); | |
eaf96153 | 129 | void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev); |
1b40e09a | 130 | struct nd_region; |
98a29c39 | 131 | void nd_region_create_ns_seed(struct nd_region *nd_region); |
8c2f7e86 | 132 | void nd_region_create_btt_seed(struct nd_region *nd_region); |
2dc43331 | 133 | void nd_region_create_pfn_seed(struct nd_region *nd_region); |
cd03412a | 134 | void nd_region_create_dax_seed(struct nd_region *nd_region); |
eaf96153 | 135 | void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev); |
45def22c DW |
136 | int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus); |
137 | void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus); | |
4d88a97a | 138 | void nd_synchronize(void); |
1f7df6f8 DW |
139 | int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus); |
140 | int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus); | |
eaf96153 | 141 | int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus); |
8c2f7e86 | 142 | void __nd_device_register(struct device *dev); |
1f7df6f8 | 143 | int nd_match_dimm(struct device *dev, void *data); |
bf9bccc1 DW |
144 | struct nd_label_id; |
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); | |
147 | struct nd_region; | |
148 | struct nvdimm_drvdata; | |
149 | struct nd_mapping; | |
ae8219f1 | 150 | void nd_mapping_free_labels(struct nd_mapping *nd_mapping); |
12e3129e KB |
151 | |
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); | |
155 | ||
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); | |
bf9bccc1 DW |
159 | resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region, |
160 | struct nd_mapping *nd_mapping, resource_size_t *overlap); | |
a1f3e4d6 | 161 | resource_size_t nd_blk_available_dpa(struct nd_region *nd_region); |
bf9bccc1 | 162 | resource_size_t nd_region_available_dpa(struct nd_region *nd_region); |
ae86cbfe DW |
163 | int nd_region_conflict(struct nd_region *nd_region, resource_size_t start, |
164 | resource_size_t size); | |
bf9bccc1 DW |
165 | resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd, |
166 | struct nd_label_id *label_id); | |
762d067d | 167 | int alias_dpa_busy(struct device *dev, void *data); |
1b40e09a DW |
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); | |
0ba1c634 | 171 | int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd); |
bf9bccc1 | 172 | void get_ndd(struct nvdimm_drvdata *ndd); |
8c2f7e86 | 173 | resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns); |
e1455744 DW |
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, | |
182 | size_t len); | |
03dca343 | 183 | struct nd_pfn *to_nd_pfn_safe(struct device *dev); |
b94d5230 | 184 | #endif /* __ND_CORE_H__ */ |