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/libnvdimm.h>
18 #include <linux/sizes.h>
19 #include <linux/mutex.h>
22 extern struct list_head nvdimm_bus_list;
23 extern struct mutex nvdimm_bus_list_mutex;
24 extern int nvdimm_major;
27 struct nvdimm_bus_descriptor *nd_desc;
28 wait_queue_head_t probe_wait;
29 struct list_head list;
32 struct list_head poison_list;
33 struct list_head mapping_list;
34 struct mutex reconfig_mutex;
35 spinlock_t poison_lock;
41 unsigned long cmd_mask;
45 struct resource *flush_wpq;
49 * struct blk_alloc_info - tracking info for BLK dpa scanning
50 * @nd_mapping: blk region mapping boundaries
51 * @available: decremented in alias_dpa_busy as aliased PMEM is scanned
52 * @busy: decremented in blk_dpa_busy to account for ranges already
53 * handled by alias_dpa_busy
54 * @res: alias_dpa_busy interprets this a free space range that needs to
55 * be truncated to the valid BLK allocation starting DPA, blk_dpa_busy
56 * treats it as a busy range that needs the aliased PMEM ranges
59 struct blk_alloc_info {
60 struct nd_mapping *nd_mapping;
61 resource_size_t available, busy;
65 bool is_nvdimm(struct device *dev);
66 bool is_nd_pmem(struct device *dev);
67 bool is_nd_blk(struct device *dev);
68 struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
69 int __init nvdimm_bus_init(void);
70 void nvdimm_bus_exit(void);
71 void nvdimm_devs_exit(void);
72 void nd_region_devs_exit(void);
73 void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
75 void nd_region_create_ns_seed(struct nd_region *nd_region);
76 void nd_region_create_btt_seed(struct nd_region *nd_region);
77 void nd_region_create_pfn_seed(struct nd_region *nd_region);
78 void nd_region_create_dax_seed(struct nd_region *nd_region);
79 void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
80 int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
81 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
82 void nd_synchronize(void);
83 int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus);
84 int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus);
85 int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus);
86 void __nd_device_register(struct device *dev);
87 int nd_match_dimm(struct device *dev, void *data);
89 char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags);
90 bool nd_is_uuid_unique(struct device *dev, u8 *uuid);
92 struct nvdimm_drvdata;
94 void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
95 resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
96 struct nd_mapping *nd_mapping, resource_size_t *overlap);
97 resource_size_t nd_blk_available_dpa(struct nd_region *nd_region);
98 resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
99 resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
100 struct nd_label_id *label_id);
101 int alias_dpa_busy(struct device *dev, void *data);
102 struct resource *nsblk_add_resource(struct nd_region *nd_region,
103 struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
104 resource_size_t start);
105 int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
106 void get_ndd(struct nvdimm_drvdata *ndd);
107 resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
108 void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
109 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
110 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
111 struct nd_namespace_common **_ndns);
112 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
113 struct nd_namespace_common **_ndns);
114 ssize_t nd_namespace_store(struct device *dev,
115 struct nd_namespace_common **_ndns, const char *buf,
117 struct nd_pfn *to_nd_pfn_safe(struct device *dev);
118 #endif /* __ND_CORE_H__ */