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4d88a97a DW |
1 | /* |
2 | * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. | |
3 | * | |
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. | |
7 | * | |
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. | |
12 | */ | |
13 | #ifndef __ND_H__ | |
14 | #define __ND_H__ | |
1f7df6f8 | 15 | #include <linux/libnvdimm.h> |
4d88a97a DW |
16 | #include <linux/device.h> |
17 | #include <linux/mutex.h> | |
18 | #include <linux/ndctl.h> | |
bf9bccc1 | 19 | #include <linux/types.h> |
4a826c83 | 20 | #include "label.h" |
4d88a97a DW |
21 | |
22 | struct nvdimm_drvdata { | |
23 | struct device *dev; | |
4a826c83 | 24 | int nsindex_size; |
4d88a97a DW |
25 | struct nd_cmd_get_config_size nsarea; |
26 | void *data; | |
4a826c83 DW |
27 | int ns_current, ns_next; |
28 | struct resource dpa; | |
bf9bccc1 | 29 | struct kref kref; |
4d88a97a DW |
30 | }; |
31 | ||
3d88002e DW |
32 | struct nd_region_namespaces { |
33 | int count; | |
34 | int active; | |
35 | }; | |
36 | ||
4a826c83 DW |
37 | static inline struct nd_namespace_index *to_namespace_index( |
38 | struct nvdimm_drvdata *ndd, int i) | |
39 | { | |
40 | if (i < 0) | |
41 | return NULL; | |
42 | ||
43 | return ndd->data + sizeof_namespace_index(ndd) * i; | |
44 | } | |
45 | ||
46 | static inline struct nd_namespace_index *to_current_namespace_index( | |
47 | struct nvdimm_drvdata *ndd) | |
48 | { | |
49 | return to_namespace_index(ndd, ndd->ns_current); | |
50 | } | |
51 | ||
52 | static inline struct nd_namespace_index *to_next_namespace_index( | |
53 | struct nvdimm_drvdata *ndd) | |
54 | { | |
55 | return to_namespace_index(ndd, ndd->ns_next); | |
56 | } | |
57 | ||
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) | |
63 | ||
bf9bccc1 DW |
64 | #define for_each_label(l, label, labels) \ |
65 | for (l = 0; (label = labels ? labels[l] : NULL); l++) | |
66 | ||
67 | #define for_each_dpa_resource(ndd, res) \ | |
68 | for (res = (ndd)->dpa.child; res; res = res->sibling) | |
69 | ||
4a826c83 DW |
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) | |
73 | ||
1f7df6f8 DW |
74 | struct nd_region { |
75 | struct device dev; | |
bf9bccc1 | 76 | struct device *ns_seed; |
1f7df6f8 DW |
77 | u16 ndr_mappings; |
78 | u64 ndr_size; | |
79 | u64 ndr_start; | |
80 | int id; | |
81 | void *provider_data; | |
eaf96153 | 82 | struct nd_interleave_set *nd_set; |
1f7df6f8 DW |
83 | struct nd_mapping mapping[0]; |
84 | }; | |
85 | ||
4a826c83 DW |
86 | /* |
87 | * Lookup next in the repeating sequence of 01, 10, and 11. | |
88 | */ | |
89 | static inline unsigned nd_inc_seq(unsigned seq) | |
90 | { | |
91 | static const unsigned next[] = { 0, 2, 3, 1 }; | |
92 | ||
93 | return next[seq & 3]; | |
94 | } | |
4d88a97a DW |
95 | enum nd_async_mode { |
96 | ND_SYNC, | |
97 | ND_ASYNC, | |
98 | }; | |
99 | ||
bf9bccc1 | 100 | void wait_nvdimm_bus_probe_idle(struct device *dev); |
4d88a97a DW |
101 | void nd_device_register(struct device *dev); |
102 | void nd_device_unregister(struct device *dev, enum nd_async_mode mode); | |
bf9bccc1 DW |
103 | int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf, |
104 | size_t len); | |
4d88a97a | 105 | int __init nvdimm_init(void); |
3d88002e | 106 | int __init nd_region_init(void); |
4d88a97a | 107 | void nvdimm_exit(void); |
3d88002e | 108 | void nd_region_exit(void); |
bf9bccc1 DW |
109 | struct nvdimm; |
110 | struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping); | |
4d88a97a DW |
111 | int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd); |
112 | int nvdimm_init_config_data(struct nvdimm_drvdata *ndd); | |
3d88002e DW |
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); | |
bf9bccc1 | 116 | u64 nd_region_interleave_set_cookie(struct nd_region *nd_region); |
3d88002e DW |
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); | |
bf9bccc1 DW |
120 | void nvdimm_drvdata_release(struct kref *kref); |
121 | void put_ndd(struct nvdimm_drvdata *ndd); | |
4a826c83 DW |
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, | |
126 | resource_size_t n); | |
4d88a97a | 127 | #endif /* __ND_H__ */ |