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/mutex.h>
18 #include <linux/ndctl.h>
19 #include <linux/types.h>
22 struct nvdimm_drvdata {
25 struct nd_cmd_get_config_size nsarea;
27 int ns_current, ns_next;
32 struct nd_region_namespaces {
37 static inline struct nd_namespace_index *to_namespace_index(
38 struct nvdimm_drvdata *ndd, int i)
43 return ndd->data + sizeof_namespace_index(ndd) * i;
46 static inline struct nd_namespace_index *to_current_namespace_index(
47 struct nvdimm_drvdata *ndd)
49 return to_namespace_index(ndd, ndd->ns_current);
52 static inline struct nd_namespace_index *to_next_namespace_index(
53 struct nvdimm_drvdata *ndd)
55 return to_namespace_index(ndd, ndd->ns_next);
58 #define nd_dbg_dpa(r, d, res, fmt, arg...) \
59 dev_dbg((r) ? &(r)->dev : (d)->dev, "%s: %.13s: %#llx @ %#llx " fmt, \
60 (r) ? dev_name((d)->dev) : "", res ? res->name : "null", \
61 (unsigned long long) (res ? resource_size(res) : 0), \
62 (unsigned long long) (res ? res->start : 0), ##arg)
64 #define for_each_label(l, label, labels) \
65 for (l = 0; (label = labels ? labels[l] : NULL); l++)
67 #define for_each_dpa_resource(ndd, res) \
68 for (res = (ndd)->dpa.child; res; res = res->sibling)
70 #define for_each_dpa_resource_safe(ndd, res, next) \
71 for (res = (ndd)->dpa.child, next = res ? res->sibling : NULL; \
72 res; res = next, next = next ? next->sibling : NULL)
76 struct device *ns_seed;
82 struct nd_interleave_set *nd_set;
83 struct nd_mapping mapping[0];
87 * Lookup next in the repeating sequence of 01, 10, and 11.
89 static inline unsigned nd_inc_seq(unsigned seq)
91 static const unsigned next[] = { 0, 2, 3, 1 };
100 void wait_nvdimm_bus_probe_idle(struct device *dev);
101 void nd_device_register(struct device *dev);
102 void nd_device_unregister(struct device *dev, enum nd_async_mode mode);
103 int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf,
105 int __init nvdimm_init(void);
106 int __init nd_region_init(void);
107 void nvdimm_exit(void);
108 void nd_region_exit(void);
110 struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping);
111 int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
112 int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
113 struct nd_region *to_nd_region(struct device *dev);
114 int nd_region_to_nstype(struct nd_region *nd_region);
115 int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
116 u64 nd_region_interleave_set_cookie(struct nd_region *nd_region);
117 void nvdimm_bus_lock(struct device *dev);
118 void nvdimm_bus_unlock(struct device *dev);
119 bool is_nvdimm_bus_locked(struct device *dev);
120 void nvdimm_drvdata_release(struct kref *kref);
121 void put_ndd(struct nvdimm_drvdata *ndd);
122 int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd);
123 void nvdimm_free_dpa(struct nvdimm_drvdata *ndd, struct resource *res);
124 struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd,
125 struct nd_label_id *label_id, resource_size_t start,
127 #endif /* __ND_H__ */