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