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b94d5230 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_CORE_H__ | |
14 | #define __ND_CORE_H__ | |
15 | #include <linux/libnvdimm.h> | |
16 | #include <linux/device.h> | |
eaf96153 DW |
17 | #include <linux/libnvdimm.h> |
18 | #include <linux/sizes.h> | |
19 | #include <linux/mutex.h> | |
1b40e09a | 20 | #include <linux/nd.h> |
b94d5230 | 21 | |
e6dfb2de DW |
22 | extern struct list_head nvdimm_bus_list; |
23 | extern struct mutex nvdimm_bus_list_mutex; | |
62232e45 | 24 | extern int nvdimm_major; |
e6dfb2de | 25 | |
b94d5230 DW |
26 | struct nvdimm_bus { |
27 | struct nvdimm_bus_descriptor *nd_desc; | |
eaf96153 | 28 | wait_queue_head_t probe_wait; |
45def22c | 29 | struct list_head list; |
b94d5230 | 30 | struct device dev; |
eaf96153 | 31 | int id, probe_active; |
0caeef63 | 32 | struct list_head poison_list; |
29b9aa0a | 33 | struct list_head mapping_list; |
3d88002e | 34 | struct mutex reconfig_mutex; |
b3b454f6 | 35 | spinlock_t poison_lock; |
b94d5230 | 36 | }; |
45def22c | 37 | |
e6dfb2de DW |
38 | struct nvdimm { |
39 | unsigned long flags; | |
40 | void *provider_data; | |
e3654eca | 41 | unsigned long cmd_mask; |
e6dfb2de | 42 | struct device dev; |
eaf96153 | 43 | atomic_t busy; |
e5ae3b25 DW |
44 | int id, num_flush; |
45 | struct resource *flush_wpq; | |
e6dfb2de DW |
46 | }; |
47 | ||
762d067d DW |
48 | /** |
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 | |
57 | * truncated. | |
58 | */ | |
59 | struct blk_alloc_info { | |
60 | struct nd_mapping *nd_mapping; | |
61 | resource_size_t available, busy; | |
62 | struct resource *res; | |
63 | }; | |
64 | ||
3d88002e | 65 | bool is_nvdimm(struct device *dev); |
3d88002e | 66 | bool is_nd_pmem(struct device *dev); |
c9e582aa | 67 | bool is_nd_volatile(struct device *dev); |
047fc8a1 | 68 | bool is_nd_blk(struct device *dev); |
c9e582aa DW |
69 | static inline bool is_nd_region(struct device *dev) |
70 | { | |
71 | return is_nd_pmem(dev) || is_nd_blk(dev) || is_nd_volatile(dev); | |
72 | } | |
73 | static inline bool is_memory(struct device *dev) | |
74 | { | |
75 | return is_nd_pmem(dev) || is_nd_volatile(dev); | |
76 | } | |
e6dfb2de | 77 | struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev); |
45def22c | 78 | int __init nvdimm_bus_init(void); |
4d88a97a | 79 | void nvdimm_bus_exit(void); |
b354aba0 DW |
80 | void nvdimm_devs_exit(void); |
81 | void nd_region_devs_exit(void); | |
eaf96153 | 82 | void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev); |
1b40e09a | 83 | struct nd_region; |
98a29c39 | 84 | void nd_region_create_ns_seed(struct nd_region *nd_region); |
8c2f7e86 | 85 | void nd_region_create_btt_seed(struct nd_region *nd_region); |
2dc43331 | 86 | void nd_region_create_pfn_seed(struct nd_region *nd_region); |
cd03412a | 87 | void nd_region_create_dax_seed(struct nd_region *nd_region); |
eaf96153 | 88 | void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev); |
45def22c DW |
89 | int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus); |
90 | void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus); | |
4d88a97a | 91 | void nd_synchronize(void); |
1f7df6f8 DW |
92 | int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus); |
93 | int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus); | |
eaf96153 | 94 | int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus); |
8c2f7e86 | 95 | void __nd_device_register(struct device *dev); |
1f7df6f8 | 96 | int nd_match_dimm(struct device *dev, void *data); |
bf9bccc1 DW |
97 | struct nd_label_id; |
98 | char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags); | |
99 | bool nd_is_uuid_unique(struct device *dev, u8 *uuid); | |
100 | struct nd_region; | |
101 | struct nvdimm_drvdata; | |
102 | struct nd_mapping; | |
ae8219f1 | 103 | void nd_mapping_free_labels(struct nd_mapping *nd_mapping); |
bf9bccc1 DW |
104 | resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region, |
105 | struct nd_mapping *nd_mapping, resource_size_t *overlap); | |
a1f3e4d6 | 106 | resource_size_t nd_blk_available_dpa(struct nd_region *nd_region); |
bf9bccc1 DW |
107 | resource_size_t nd_region_available_dpa(struct nd_region *nd_region); |
108 | resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd, | |
109 | struct nd_label_id *label_id); | |
762d067d | 110 | int alias_dpa_busy(struct device *dev, void *data); |
1b40e09a DW |
111 | struct resource *nsblk_add_resource(struct nd_region *nd_region, |
112 | struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk, | |
113 | resource_size_t start); | |
0ba1c634 | 114 | int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd); |
bf9bccc1 | 115 | void get_ndd(struct nvdimm_drvdata *ndd); |
8c2f7e86 | 116 | resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns); |
e1455744 DW |
117 | void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns); |
118 | void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns); | |
119 | bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach, | |
120 | struct nd_namespace_common **_ndns); | |
121 | bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach, | |
122 | struct nd_namespace_common **_ndns); | |
123 | ssize_t nd_namespace_store(struct device *dev, | |
124 | struct nd_namespace_common **_ndns, const char *buf, | |
125 | size_t len); | |
03dca343 | 126 | struct nd_pfn *to_nd_pfn_safe(struct device *dev); |
b94d5230 | 127 | #endif /* __ND_CORE_H__ */ |