drivers/nvdimm/nd-core.h

   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>
  17 #include <linux/libnvdimm.h>
  18 #include <linux/sizes.h>
  19 #include <linux/mutex.h>
  20 #include <linux/nd.h>
  21
  22 extern struct list_head nvdimm_bus_list;
  23 extern struct mutex nvdimm_bus_list_mutex;
  24 extern int nvdimm_major;
  25
  26 struct nvdimm_bus {
  27         struct nvdimm_bus_descriptor *nd_desc;
  28         wait_queue_head_t probe_wait;
  29         struct module *module;
  30         struct list_head list;
  31         struct device dev;
  32         int id, probe_active;
  33         struct list_head poison_list;
  34         struct mutex reconfig_mutex;
  35 };
  36
  37 struct nvdimm {
  38         unsigned long flags;
  39         void *provider_data;
  40         unsigned long cmd_mask;
  41         struct device dev;
  42         atomic_t busy;
  43         int id;
  44 };
  45
  46 bool is_nvdimm(struct device *dev);
  47 bool is_nd_pmem(struct device *dev);
  48 bool is_nd_blk(struct device *dev);
  49 struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
  50 int __init nvdimm_bus_init(void);
  51 void nvdimm_bus_exit(void);
  52 void nvdimm_devs_exit(void);
  53 void nd_region_devs_exit(void);
  54 void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev);
  55 struct nd_region;
  56 void nd_region_create_blk_seed(struct nd_region *nd_region);
  57 void nd_region_create_btt_seed(struct nd_region *nd_region);
  58 void nd_region_create_pfn_seed(struct nd_region *nd_region);
  59 void nd_region_create_dax_seed(struct nd_region *nd_region);
  60 void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev);
  61 int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
  62 void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
  63 void nd_synchronize(void);
  64 int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus);
  65 int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus);
  66 int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus);
  67 void __nd_device_register(struct device *dev);
  68 int nd_match_dimm(struct device *dev, void *data);
  69 struct nd_label_id;
  70 char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags);
  71 bool nd_is_uuid_unique(struct device *dev, u8 *uuid);
  72 struct nd_region;
  73 struct nvdimm_drvdata;
  74 struct nd_mapping;
  75 resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
  76                 struct nd_mapping *nd_mapping, resource_size_t *overlap);
  77 resource_size_t nd_blk_available_dpa(struct nd_mapping *nd_mapping);
  78 resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
  79 resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
  80                 struct nd_label_id *label_id);
  81 struct nd_mapping;
  82 struct resource *nsblk_add_resource(struct nd_region *nd_region,
  83                 struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk,
  84                 resource_size_t start);
  85 int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
  86 void get_ndd(struct nvdimm_drvdata *ndd);
  87 resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
  88 void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
  89 void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
  90 bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
  91                 struct nd_namespace_common **_ndns);
  92 bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
  93                 struct nd_namespace_common **_ndns);
  94 ssize_t nd_namespace_store(struct device *dev,
  95                 struct nd_namespace_common **_ndns, const char *buf,
  96                 size_t len);
  97 struct nd_pfn *to_nd_pfn_safe(struct device *dev);
  98 #endif /* __ND_CORE_H__ */