[mirror_ubuntu-zesty-kernel.git] / drivers / nvdimm / nd.h

/*
 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
#ifndef __ND_H__
#define __ND_H__
#include <linux/libnvdimm.h>
#include <linux/badblocks.h>
#include <linux/blkdev.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/ndctl.h>
#include <linux/types.h>
#include <linux/nd.h>
#include "label.h"

enum {
	/*
	 * Limits the maximum number of block apertures a dimm can
	 * support and is an input to the geometry/on-disk-format of a
	 * BTT instance
	 */
	ND_MAX_LANES = 256,
	SECTOR_SHIFT = 9,
	INT_LBASIZE_ALIGNMENT = 64,
};

struct nd_poison {
	u64 start;
	u64 length;
	struct list_head list;
};

struct nvdimm_drvdata {
	struct device *dev;
	int nsindex_size;
	struct nd_cmd_get_config_size nsarea;
	void *data;
	int ns_current, ns_next;
	struct resource dpa;
	struct kref kref;
};

struct nd_region_data {
	int ns_count;
	int ns_active;
	unsigned int flush_mask;
	void __iomem *flush_wpq[0][0];
};

static inline struct nd_namespace_index *to_namespace_index(
		struct nvdimm_drvdata *ndd, int i)
{
	if (i < 0)
		return NULL;

	return ndd->data + sizeof_namespace_index(ndd) * i;
}

static inline struct nd_namespace_index *to_current_namespace_index(
		struct nvdimm_drvdata *ndd)
{
	return to_namespace_index(ndd, ndd->ns_current);
}

static inline struct nd_namespace_index *to_next_namespace_index(
		struct nvdimm_drvdata *ndd)
{
	return to_namespace_index(ndd, ndd->ns_next);
}

#define nd_dbg_dpa(r, d, res, fmt, arg...) \
	dev_dbg((r) ? &(r)->dev : (d)->dev, "%s: %.13s: %#llx @ %#llx " fmt, \
		(r) ? dev_name((d)->dev) : "", res ? res->name : "null", \
		(unsigned long long) (res ? resource_size(res) : 0), \
		(unsigned long long) (res ? res->start : 0), ##arg)

#define for_each_label(l, label, labels) \
	for (l = 0; (label = labels ? labels[l] : NULL); l++)

#define for_each_dpa_resource(ndd, res) \
	for (res = (ndd)->dpa.child; res; res = res->sibling)

#define for_each_dpa_resource_safe(ndd, res, next) \
	for (res = (ndd)->dpa.child, next = res ? res->sibling : NULL; \
			res; res = next, next = next ? next->sibling : NULL)

struct nd_percpu_lane {
	int count;
	spinlock_t lock;
};

struct nd_region {
	struct device dev;
	struct ida ns_ida;
	struct ida btt_ida;
	struct ida pfn_ida;
	struct ida dax_ida;
	unsigned long flags;
	struct device *ns_seed;
	struct device *btt_seed;
	struct device *pfn_seed;
	struct device *dax_seed;
	u16 ndr_mappings;
	u64 ndr_size;
	u64 ndr_start;
	int id, num_lanes, ro, numa_node;
	void *provider_data;
	struct nd_interleave_set *nd_set;
	struct nd_percpu_lane __percpu *lane;
	struct nd_mapping mapping[0];
};

struct nd_blk_region {
	int (*enable)(struct nvdimm_bus *nvdimm_bus, struct device *dev);
	int (*do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
			void *iobuf, u64 len, int rw);
	void *blk_provider_data;
	struct nd_region nd_region;
};

/*
 * Lookup next in the repeating sequence of 01, 10, and 11.
 */
static inline unsigned nd_inc_seq(unsigned seq)
{
	static const unsigned next[] = { 0, 2, 3, 1 };

	return next[seq & 3];
}

struct btt;
struct nd_btt {
	struct device dev;
	struct nd_namespace_common *ndns;
	struct btt *btt;
	unsigned long lbasize;
	u64 size;
	u8 *uuid;
	int id;
};

enum nd_pfn_mode {
	PFN_MODE_NONE,
	PFN_MODE_RAM,
	PFN_MODE_PMEM,
};

struct nd_pfn {
	int id;
	u8 *uuid;
	struct device dev;
	unsigned long align;
	unsigned long npfns;
	enum nd_pfn_mode mode;
	struct nd_pfn_sb *pfn_sb;
	struct nd_namespace_common *ndns;
};

struct nd_dax {
	struct nd_pfn nd_pfn;
};

enum nd_async_mode {
	ND_SYNC,
	ND_ASYNC,
};

int nd_integrity_init(struct gendisk *disk, unsigned long meta_size);
void wait_nvdimm_bus_probe_idle(struct device *dev);
void nd_device_register(struct device *dev);
void nd_device_unregister(struct device *dev, enum nd_async_mode mode);
void nd_device_notify(struct device *dev, enum nvdimm_event event);
int nd_uuid_store(struct device *dev, u8 **uuid_out, const char *buf,
		size_t len);
ssize_t nd_sector_size_show(unsigned long current_lbasize,
		const unsigned long *supported, char *buf);
ssize_t nd_sector_size_store(struct device *dev, const char *buf,
		unsigned long *current_lbasize, const unsigned long *supported);
int __init nvdimm_init(void);
int __init nd_region_init(void);
void nvdimm_exit(void);
void nd_region_exit(void);
struct nvdimm;
struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping);
int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
		void *buf, size_t len);
long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
		unsigned int len);
struct nd_btt *to_nd_btt(struct device *dev);

struct nd_gen_sb {
	char reserved[SZ_4K - 8];
	__le64 checksum;
};

u64 nd_sb_checksum(struct nd_gen_sb *sb);
#if IS_ENABLED(CONFIG_BTT)
int nd_btt_probe(struct device *dev, struct nd_namespace_common *ndns);
bool is_nd_btt(struct device *dev);
struct device *nd_btt_create(struct nd_region *nd_region);
#else
static inline int nd_btt_probe(struct device *dev,
		struct nd_namespace_common *ndns)
{
	return -ENODEV;
}

static inline bool is_nd_btt(struct device *dev)
{
	return false;
}

static inline struct device *nd_btt_create(struct nd_region *nd_region)
{
	return NULL;
}
#endif

struct nd_pfn *to_nd_pfn(struct device *dev);
#if IS_ENABLED(CONFIG_NVDIMM_PFN)
int nd_pfn_probe(struct device *dev, struct nd_namespace_common *ndns);
bool is_nd_pfn(struct device *dev);
struct device *nd_pfn_create(struct nd_region *nd_region);
struct device *nd_pfn_devinit(struct nd_pfn *nd_pfn,
		struct nd_namespace_common *ndns);
int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig);
extern struct attribute_group nd_pfn_attribute_group;
#else
static inline int nd_pfn_probe(struct device *dev,
		struct nd_namespace_common *ndns)
{
	return -ENODEV;
}

static inline bool is_nd_pfn(struct device *dev)
{
	return false;
}

static inline struct device *nd_pfn_create(struct nd_region *nd_region)
{
	return NULL;
}

static inline int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
{
	return -ENODEV;
}
#endif

struct nd_dax *to_nd_dax(struct device *dev);
#if IS_ENABLED(CONFIG_NVDIMM_DAX)
int nd_dax_probe(struct device *dev, struct nd_namespace_common *ndns);
bool is_nd_dax(struct device *dev);
struct device *nd_dax_create(struct nd_region *nd_region);
#else
static inline int nd_dax_probe(struct device *dev,
		struct nd_namespace_common *ndns)
{
	return -ENODEV;
}

static inline bool is_nd_dax(struct device *dev)
{
	return false;
}

static inline struct device *nd_dax_create(struct nd_region *nd_region)
{
	return NULL;
}
#endif

struct nd_region *to_nd_region(struct device *dev);
int nd_region_to_nstype(struct nd_region *nd_region);
int nd_region_register_namespaces(struct nd_region *nd_region, int *err);
u64 nd_region_interleave_set_cookie(struct nd_region *nd_region);
void nvdimm_bus_lock(struct device *dev);
void nvdimm_bus_unlock(struct device *dev);
bool is_nvdimm_bus_locked(struct device *dev);
int nvdimm_revalidate_disk(struct gendisk *disk);
void nvdimm_drvdata_release(struct kref *kref);
void put_ndd(struct nvdimm_drvdata *ndd);
int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd);
void nvdimm_free_dpa(struct nvdimm_drvdata *ndd, struct resource *res);
struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd,
		struct nd_label_id *label_id, resource_size_t start,
		resource_size_t n);
resource_size_t nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
struct nd_namespace_common *nvdimm_namespace_common_probe(struct device *dev);
int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns);
int nvdimm_namespace_detach_btt(struct nd_btt *nd_btt);
const char *nvdimm_namespace_disk_name(struct nd_namespace_common *ndns,
		char *name);
void nvdimm_badblocks_populate(struct nd_region *nd_region,
		struct badblocks *bb, const struct resource *res);
#if IS_ENABLED(CONFIG_ND_CLAIM)
struct vmem_altmap *nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
		struct resource *res, struct vmem_altmap *altmap);
int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio);
void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio);
#else
static inline struct vmem_altmap *nvdimm_setup_pfn(struct nd_pfn *nd_pfn,
		struct resource *res, struct vmem_altmap *altmap)
{
	return ERR_PTR(-ENXIO);
}
static inline int devm_nsio_enable(struct device *dev,
		struct nd_namespace_io *nsio)
{
	return -ENXIO;
}
static inline void devm_nsio_disable(struct device *dev,
		struct nd_namespace_io *nsio)
{
}
#endif
int nd_blk_region_init(struct nd_region *nd_region);
int nd_region_activate(struct nd_region *nd_region);
void __nd_iostat_start(struct bio *bio, unsigned long *start);
static inline bool nd_iostat_start(struct bio *bio, unsigned long *start)
{
	struct gendisk *disk = bio->bi_bdev->bd_disk;

	if (!blk_queue_io_stat(disk->queue))
		return false;

	__nd_iostat_start(bio, start);
	return true;
}
void nd_iostat_end(struct bio *bio, unsigned long start);
static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
		unsigned int len)
{
	if (bb->count) {
		sector_t first_bad;
		int num_bad;

		return !!badblocks_check(bb, sector, len / 512, &first_bad,
				&num_bad);
	}

	return false;
}
resource_size_t nd_namespace_blk_validate(struct nd_namespace_blk *nsblk);
const u8 *nd_dev_to_uuid(struct device *dev);
bool pmem_should_map_pages(struct device *dev);
#endif /* __ND_H__ */
Commit	Line	Data
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>
200c79da	16	#include <linux/badblocks.h>
f0dc089c	17	#include <linux/blkdev.h>
4d88a97a DW	18	#include <linux/device.h>
	19	#include <linux/mutex.h>
	20	#include <linux/ndctl.h>
bf9bccc1	21	#include <linux/types.h>
71999466	22	#include <linux/nd.h>
4a826c83	23	#include "label.h"
4d88a97a	24
8c2f7e86	25	enum {
5212e11f VV	26	/*
	27	* Limits the maximum number of block apertures a dimm can
	28	* support and is an input to the geometry/on-disk-format of a
	29	* BTT instance
	30	*/
	31	ND_MAX_LANES = 256,
8c2f7e86	32	SECTOR_SHIFT = 9,
fcae6957	33	INT_LBASIZE_ALIGNMENT = 64,
8c2f7e86 DW	34	};
8c2f7e86 DW	35
0caeef63 VV	36	struct nd_poison {
	37	u64 start;
	38	u64 length;
	39	struct list_head list;
	40	};
	41
4d88a97a DW	42	struct nvdimm_drvdata {
4d88a97a DW	43	struct device *dev;
4a826c83	44	int nsindex_size;
4d88a97a DW	45	struct nd_cmd_get_config_size nsarea;
4d88a97a DW	46	void *data;
4a826c83 DW	47	int ns_current, ns_next;
4a826c83 DW	48	struct resource dpa;
bf9bccc1	49	struct kref kref;
4d88a97a DW	50	};
4d88a97a DW	51
e5ae3b25 DW	52	struct nd_region_data {
	53	int ns_count;
	54	int ns_active;
0c27af60	55	unsigned int flush_mask;
e5ae3b25	56	void __iomem *flush_wpq[0][0];
3d88002e DW	57	};
3d88002e DW	58
4a826c83 DW	59	static inline struct nd_namespace_index *to_namespace_index(
	60	struct nvdimm_drvdata *ndd, int i)
	61	{
	62	if (i < 0)
	63	return NULL;
	64
	65	return ndd->data + sizeof_namespace_index(ndd) * i;
	66	}
	67
	68	static inline struct nd_namespace_index *to_current_namespace_index(
	69	struct nvdimm_drvdata *ndd)
	70	{
	71	return to_namespace_index(ndd, ndd->ns_current);
	72	}
	73
	74	static inline struct nd_namespace_index *to_next_namespace_index(
	75	struct nvdimm_drvdata *ndd)
	76	{
	77	return to_namespace_index(ndd, ndd->ns_next);
	78	}
	79
	80	#define nd_dbg_dpa(r, d, res, fmt, arg...) \
	81	dev_dbg((r) ? &(r)->dev : (d)->dev, "%s: %.13s: %#llx @ %#llx " fmt, \
	82	(r) ? dev_name((d)->dev) : "", res ? res->name : "null", \
	83	(unsigned long long) (res ? resource_size(res) : 0), \
	84	(unsigned long long) (res ? res->start : 0), ##arg)
	85
bf9bccc1 DW	86	#define for_each_label(l, label, labels) \
	87	for (l = 0; (label = labels ? labels[l] : NULL); l++)
	88
	89	#define for_each_dpa_resource(ndd, res) \
	90	for (res = (ndd)->dpa.child; res; res = res->sibling)
	91
4a826c83 DW	92	#define for_each_dpa_resource_safe(ndd, res, next) \
	93	for (res = (ndd)->dpa.child, next = res ? res->sibling : NULL; \
	94	res; res = next, next = next ? next->sibling : NULL)
	95
5212e11f VV	96	struct nd_percpu_lane {
	97	int count;
	98	spinlock_t lock;
	99	};
	100
1f7df6f8 DW	101	struct nd_region {
1f7df6f8 DW	102	struct device dev;
1b40e09a	103	struct ida ns_ida;
8c2f7e86	104	struct ida btt_ida;
e1455744	105	struct ida pfn_ida;
cd03412a	106	struct ida dax_ida;
004f1afb	107	unsigned long flags;
bf9bccc1	108	struct device *ns_seed;
8c2f7e86	109	struct device *btt_seed;
e1455744	110	struct device *pfn_seed;
cd03412a	111	struct device *dax_seed;
1f7df6f8 DW	112	u16 ndr_mappings;
	113	u64 ndr_size;
	114	u64 ndr_start;
41d7a6d6	115	int id, num_lanes, ro, numa_node;
1f7df6f8	116	void *provider_data;
eaf96153	117	struct nd_interleave_set *nd_set;
5212e11f	118	struct nd_percpu_lane __percpu *lane;
1f7df6f8 DW	119	struct nd_mapping mapping[0];
	120	};
	121
047fc8a1 RZ	122	struct nd_blk_region {
047fc8a1 RZ	123	int (enable)(struct nvdimm_bus nvdimm_bus, struct device *dev);
047fc8a1 RZ	124	int (do_io)(struct nd_blk_region ndbr, resource_size_t dpa,
	125	void *iobuf, u64 len, int rw);
	126	void *blk_provider_data;
	127	struct nd_region nd_region;
	128	};
	129
4a826c83 DW	130	/*
	131	* Lookup next in the repeating sequence of 01, 10, and 11.
	132	*/
	133	static inline unsigned nd_inc_seq(unsigned seq)
	134	{
	135	static const unsigned next[] = { 0, 2, 3, 1 };
	136
	137	return next[seq & 3];
	138	}
f524bf27	139
5212e11f	140	struct btt;
8c2f7e86 DW	141	struct nd_btt {
	142	struct device dev;
	143	struct nd_namespace_common *ndns;
5212e11f	144	struct btt *btt;
8c2f7e86	145	unsigned long lbasize;
abe8b4e3	146	u64 size;
8c2f7e86 DW	147	u8 *uuid;
	148	int id;
	149	};
	150
e1455744 DW	151	enum nd_pfn_mode {
	152	PFN_MODE_NONE,
	153	PFN_MODE_RAM,
	154	PFN_MODE_PMEM,
	155	};
	156
	157	struct nd_pfn {
	158	int id;
	159	u8 *uuid;
	160	struct device dev;
315c5625	161	unsigned long align;
e1455744 DW	162	unsigned long npfns;
	163	enum nd_pfn_mode mode;
	164	struct nd_pfn_sb *pfn_sb;
	165	struct nd_namespace_common *ndns;
	166	};
	167
cd03412a DW	168	struct nd_dax {
	169	struct nd_pfn nd_pfn;
	170	};
	171
4d88a97a DW	172	enum nd_async_mode {
	173	ND_SYNC,
	174	ND_ASYNC,
	175	};
	176
41cd8b70	177	int nd_integrity_init(struct gendisk *disk, unsigned long meta_size);
bf9bccc1	178	void wait_nvdimm_bus_probe_idle(struct device *dev);
4d88a97a DW	179	void nd_device_register(struct device *dev);
4d88a97a DW	180	void nd_device_unregister(struct device *dev, enum nd_async_mode mode);
71999466	181	void nd_device_notify(struct device *dev, enum nvdimm_event event);
bf9bccc1 DW	182	int nd_uuid_store(struct device dev, u8 uuid_out, const char buf,
bf9bccc1 DW	183	size_t len);
1b40e09a DW	184	ssize_t nd_sector_size_show(unsigned long current_lbasize,
	185	const unsigned long supported, char buf);
	186	ssize_t nd_sector_size_store(struct device dev, const char buf,
	187	unsigned long current_lbasize, const unsigned long supported);
4d88a97a	188	int __init nvdimm_init(void);
3d88002e	189	int __init nd_region_init(void);
4d88a97a	190	void nvdimm_exit(void);
3d88002e	191	void nd_region_exit(void);
bf9bccc1 DW	192	struct nvdimm;
bf9bccc1 DW	193	struct nvdimm_drvdata to_ndd(struct nd_mapping nd_mapping);
4d88a97a DW	194	int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
4d88a97a DW	195	int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
f524bf27 DW	196	int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
f524bf27 DW	197	void *buf, size_t len);
59e64739 DW	198	long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
59e64739 DW	199	unsigned int len);
8c2f7e86	200	struct nd_btt to_nd_btt(struct device dev);
e1455744 DW	201
	202	struct nd_gen_sb {
	203	char reserved[SZ_4K - 8];
	204	__le64 checksum;
	205	};
	206
	207	u64 nd_sb_checksum(struct nd_gen_sb *sb);
8c2f7e86	208	#if IS_ENABLED(CONFIG_BTT)
200c79da	209	int nd_btt_probe(struct device dev, struct nd_namespace_common ndns);
8c2f7e86 DW	210	bool is_nd_btt(struct device *dev);
	211	struct device nd_btt_create(struct nd_region nd_region);
	212	#else
e32bc729	213	static inline int nd_btt_probe(struct device *dev,
200c79da	214	struct nd_namespace_common *ndns)
8c2f7e86 DW	215	{
	216	return -ENODEV;
	217	}
	218
	219	static inline bool is_nd_btt(struct device *dev)
	220	{
	221	return false;
	222	}
	223
	224	static inline struct device nd_btt_create(struct nd_region nd_region)
	225	{
	226	return NULL;
	227	}
e1455744	228	#endif
8c2f7e86	229
e1455744 DW	230	struct nd_pfn to_nd_pfn(struct device dev);
e1455744 DW	231	#if IS_ENABLED(CONFIG_NVDIMM_PFN)
200c79da	232	int nd_pfn_probe(struct device dev, struct nd_namespace_common ndns);
e1455744 DW	233	bool is_nd_pfn(struct device *dev);
e1455744 DW	234	struct device nd_pfn_create(struct nd_region nd_region);
cd03412a DW	235	struct device nd_pfn_devinit(struct nd_pfn nd_pfn,
cd03412a DW	236	struct nd_namespace_common *ndns);
c5ed9268	237	int nd_pfn_validate(struct nd_pfn nd_pfn, const char sig);
cd03412a	238	extern struct attribute_group nd_pfn_attribute_group;
e1455744	239	#else
200c79da DW	240	static inline int nd_pfn_probe(struct device *dev,
200c79da DW	241	struct nd_namespace_common *ndns)
e1455744 DW	242	{
	243	return -ENODEV;
	244	}
	245
	246	static inline bool is_nd_pfn(struct device *dev)
	247	{
	248	return false;
	249	}
	250
	251	static inline struct device nd_pfn_create(struct nd_region nd_region)
	252	{
	253	return NULL;
	254	}
32ab0a3f	255
c5ed9268	256	static inline int nd_pfn_validate(struct nd_pfn nd_pfn, const char sig)
32ab0a3f DW	257	{
	258	return -ENODEV;
	259	}
8c2f7e86	260	#endif
e1455744	261
cd03412a DW	262	struct nd_dax to_nd_dax(struct device dev);
cd03412a DW	263	#if IS_ENABLED(CONFIG_NVDIMM_DAX)
c5ed9268	264	int nd_dax_probe(struct device dev, struct nd_namespace_common ndns);
cd03412a DW	265	bool is_nd_dax(struct device *dev);
	266	struct device nd_dax_create(struct nd_region nd_region);
	267	#else
c5ed9268 DW	268	static inline int nd_dax_probe(struct device *dev,
	269	struct nd_namespace_common *ndns)
	270	{
	271	return -ENODEV;
	272	}
	273
cd03412a DW	274	static inline bool is_nd_dax(struct device *dev)
	275	{
	276	return false;
	277	}
	278
	279	static inline struct device nd_dax_create(struct nd_region nd_region)
	280	{
	281	return NULL;
	282	}
	283	#endif
	284
3d88002e DW	285	struct nd_region to_nd_region(struct device dev);
	286	int nd_region_to_nstype(struct nd_region *nd_region);
	287	int nd_region_register_namespaces(struct nd_region nd_region, int err);
bf9bccc1	288	u64 nd_region_interleave_set_cookie(struct nd_region *nd_region);
3d88002e DW	289	void nvdimm_bus_lock(struct device *dev);
	290	void nvdimm_bus_unlock(struct device *dev);
	291	bool is_nvdimm_bus_locked(struct device *dev);
58138820	292	int nvdimm_revalidate_disk(struct gendisk *disk);
bf9bccc1 DW	293	void nvdimm_drvdata_release(struct kref *kref);
bf9bccc1 DW	294	void put_ndd(struct nvdimm_drvdata *ndd);
4a826c83 DW	295	int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd);
	296	void nvdimm_free_dpa(struct nvdimm_drvdata ndd, struct resource res);
	297	struct resource nvdimm_allocate_dpa(struct nvdimm_drvdata ndd,
	298	struct nd_label_id *label_id, resource_size_t start,
	299	resource_size_t n);
8c2f7e86 DW	300	resource_size_t nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
8c2f7e86 DW	301	struct nd_namespace_common nvdimm_namespace_common_probe(struct device dev);
5212e11f	302	int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns);
298f2bc5	303	int nvdimm_namespace_detach_btt(struct nd_btt *nd_btt);
5212e11f VV	304	const char nvdimm_namespace_disk_name(struct nd_namespace_common ndns,
5212e11f VV	305	char *name);
a3901802 DW	306	void nvdimm_badblocks_populate(struct nd_region *nd_region,
a3901802 DW	307	struct badblocks bb, const struct resource res);
200c79da	308	#if IS_ENABLED(CONFIG_ND_CLAIM)
ac515c08 DW	309	struct vmem_altmap nvdimm_setup_pfn(struct nd_pfn nd_pfn,
ac515c08 DW	310	struct resource res, struct vmem_altmap altmap);
200c79da DW	311	int devm_nsio_enable(struct device dev, struct nd_namespace_io nsio);
	312	void devm_nsio_disable(struct device dev, struct nd_namespace_io nsio);
	313	#else
ac515c08 DW	314	static inline struct vmem_altmap nvdimm_setup_pfn(struct nd_pfn nd_pfn,
	315	struct resource res, struct vmem_altmap altmap)
	316	{
	317	return ERR_PTR(-ENXIO);
	318	}
200c79da DW	319	static inline int devm_nsio_enable(struct device *dev,
	320	struct nd_namespace_io *nsio)
	321	{
	322	return -ENXIO;
	323	}
	324	static inline void devm_nsio_disable(struct device *dev,
	325	struct nd_namespace_io *nsio)
	326	{
	327	}
	328	#endif
047fc8a1	329	int nd_blk_region_init(struct nd_region *nd_region);
e5ae3b25	330	int nd_region_activate(struct nd_region *nd_region);
f0dc089c DW	331	void __nd_iostat_start(struct bio bio, unsigned long start);
	332	static inline bool nd_iostat_start(struct bio bio, unsigned long start)
	333	{
	334	struct gendisk *disk = bio->bi_bdev->bd_disk;
	335
	336	if (!blk_queue_io_stat(disk->queue))
	337	return false;
	338
	339	__nd_iostat_start(bio, start);
	340	return true;
	341	}
	342	void nd_iostat_end(struct bio *bio, unsigned long start);
200c79da DW	343	static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector,
	344	unsigned int len)
	345	{
	346	if (bb->count) {
	347	sector_t first_bad;
	348	int num_bad;
	349
	350	return !!badblocks_check(bb, sector, len / 512, &first_bad,
	351	&num_bad);
	352	}
	353
	354	return false;
	355	}
047fc8a1	356	resource_size_t nd_namespace_blk_validate(struct nd_namespace_blk *nsblk);
6ec68954	357	const u8 nd_dev_to_uuid(struct device dev);
004f1afb	358	bool pmem_should_map_pages(struct device *dev);
4d88a97a	359	#endif /* __ND_H__ */