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>
21 struct nvdimm_drvdata {
24 struct nd_cmd_get_config_size nsarea;
26 int ns_current, ns_next;
30 struct nd_region_namespaces {
35 static inline struct nd_namespace_index *to_namespace_index(
36 struct nvdimm_drvdata *ndd, int i)
41 return ndd->data + sizeof_namespace_index(ndd) * i;
44 static inline struct nd_namespace_index *to_current_namespace_index(
45 struct nvdimm_drvdata *ndd)
47 return to_namespace_index(ndd, ndd->ns_current);
50 static inline struct nd_namespace_index *to_next_namespace_index(
51 struct nvdimm_drvdata *ndd)
53 return to_namespace_index(ndd, ndd->ns_next);
56 #define nd_dbg_dpa(r, d, res, fmt, arg...) \
57 dev_dbg((r) ? &(r)->dev : (d)->dev, "%s: %.13s: %#llx @ %#llx " fmt, \
58 (r) ? dev_name((d)->dev) : "", res ? res->name : "null", \
59 (unsigned long long) (res ? resource_size(res) : 0), \
60 (unsigned long long) (res ? res->start : 0), ##arg)
62 #define for_each_dpa_resource_safe(ndd, res, next) \
63 for (res = (ndd)->dpa.child, next = res ? res->sibling : NULL; \
64 res; res = next, next = next ? next->sibling : NULL)
73 struct nd_interleave_set *nd_set;
74 struct nd_mapping mapping[0];
78 * Lookup next in the repeating sequence of 01, 10, and 11.
80 static inline unsigned nd_inc_seq(unsigned seq)
82 static const unsigned next[] = { 0, 2, 3, 1 };
91 void nd_device_register(struct device *dev);
92 void nd_device_unregister(struct device *dev, enum nd_async_mode mode);
93 int __init nvdimm_init(void);
94 int __init nd_region_init(void);
95 void nvdimm_exit(void);
96 void nd_region_exit(void);
97 int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
98 int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
99 struct nd_region *to_nd_region(struct device *dev);
100 int nd_region_to_nstype(struct nd_region *nd_region);
101 int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
102 void nvdimm_bus_lock(struct device *dev);
103 void nvdimm_bus_unlock(struct device *dev);
104 bool is_nvdimm_bus_locked(struct device *dev);
105 int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd);
106 void nvdimm_free_dpa(struct nvdimm_drvdata *ndd, struct resource *res);
107 struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd,
108 struct nd_label_id *label_id, resource_size_t start,
110 #endif /* __ND_H__ */