165 строки
5.3 KiB
C
165 строки
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
|
|
*/
|
|
#ifndef __ND_CORE_H__
|
|
#define __ND_CORE_H__
|
|
#include <linux/libnvdimm.h>
|
|
#include <linux/device.h>
|
|
#include <linux/sizes.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/nd.h>
|
|
#include "nd.h"
|
|
|
|
extern struct list_head nvdimm_bus_list;
|
|
extern struct mutex nvdimm_bus_list_mutex;
|
|
extern int nvdimm_major;
|
|
extern struct workqueue_struct *nvdimm_wq;
|
|
|
|
struct nvdimm_bus {
|
|
struct nvdimm_bus_descriptor *nd_desc;
|
|
wait_queue_head_t wait;
|
|
struct list_head list;
|
|
struct device dev;
|
|
int id, probe_active;
|
|
atomic_t ioctl_active;
|
|
struct list_head mapping_list;
|
|
struct mutex reconfig_mutex;
|
|
struct badrange badrange;
|
|
};
|
|
|
|
struct nvdimm {
|
|
unsigned long flags;
|
|
void *provider_data;
|
|
unsigned long cmd_mask;
|
|
struct device dev;
|
|
atomic_t busy;
|
|
int id, num_flush;
|
|
struct resource *flush_wpq;
|
|
const char *dimm_id;
|
|
struct {
|
|
const struct nvdimm_security_ops *ops;
|
|
unsigned long flags;
|
|
unsigned long ext_flags;
|
|
unsigned int overwrite_tmo;
|
|
struct kernfs_node *overwrite_state;
|
|
} sec;
|
|
struct delayed_work dwork;
|
|
const struct nvdimm_fw_ops *fw_ops;
|
|
};
|
|
|
|
static inline unsigned long nvdimm_security_flags(
|
|
struct nvdimm *nvdimm, enum nvdimm_passphrase_type ptype)
|
|
{
|
|
u64 flags;
|
|
const u64 state_flags = 1UL << NVDIMM_SECURITY_DISABLED
|
|
| 1UL << NVDIMM_SECURITY_LOCKED
|
|
| 1UL << NVDIMM_SECURITY_UNLOCKED
|
|
| 1UL << NVDIMM_SECURITY_OVERWRITE;
|
|
|
|
if (!nvdimm->sec.ops)
|
|
return 0;
|
|
|
|
flags = nvdimm->sec.ops->get_flags(nvdimm, ptype);
|
|
/* disabled, locked, unlocked, and overwrite are mutually exclusive */
|
|
dev_WARN_ONCE(&nvdimm->dev, hweight64(flags & state_flags) > 1,
|
|
"reported invalid security state: %#llx\n",
|
|
(unsigned long long) flags);
|
|
return flags;
|
|
}
|
|
int nvdimm_security_freeze(struct nvdimm *nvdimm);
|
|
#if IS_ENABLED(CONFIG_NVDIMM_KEYS)
|
|
ssize_t nvdimm_security_store(struct device *dev, const char *buf, size_t len);
|
|
void nvdimm_security_overwrite_query(struct work_struct *work);
|
|
#else
|
|
static inline ssize_t nvdimm_security_store(struct device *dev,
|
|
const char *buf, size_t len)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
static inline void nvdimm_security_overwrite_query(struct work_struct *work)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
bool is_nvdimm(struct device *dev);
|
|
bool is_nd_pmem(struct device *dev);
|
|
bool is_nd_volatile(struct device *dev);
|
|
static inline bool is_nd_region(struct device *dev)
|
|
{
|
|
return is_nd_pmem(dev) || is_nd_volatile(dev);
|
|
}
|
|
static inline bool is_memory(struct device *dev)
|
|
{
|
|
return is_nd_pmem(dev) || is_nd_volatile(dev);
|
|
}
|
|
struct nvdimm_bus *walk_to_nvdimm_bus(struct device *nd_dev);
|
|
int __init nvdimm_bus_init(void);
|
|
void nvdimm_bus_exit(void);
|
|
void nvdimm_devs_exit(void);
|
|
struct nd_region;
|
|
void nd_region_advance_seeds(struct nd_region *nd_region, struct device *dev);
|
|
void nd_region_create_ns_seed(struct nd_region *nd_region);
|
|
void nd_region_create_btt_seed(struct nd_region *nd_region);
|
|
void nd_region_create_pfn_seed(struct nd_region *nd_region);
|
|
void nd_region_create_dax_seed(struct nd_region *nd_region);
|
|
int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus);
|
|
void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus);
|
|
void nd_synchronize(void);
|
|
void nd_device_register(struct device *dev);
|
|
struct nd_label_id;
|
|
char *nd_label_gen_id(struct nd_label_id *label_id, const uuid_t *uuid,
|
|
u32 flags);
|
|
bool nd_is_uuid_unique(struct device *dev, uuid_t *uuid);
|
|
struct nd_region;
|
|
struct nvdimm_drvdata;
|
|
struct nd_mapping;
|
|
void nd_mapping_free_labels(struct nd_mapping *nd_mapping);
|
|
|
|
int __reserve_free_pmem(struct device *dev, void *data);
|
|
void release_free_pmem(struct nvdimm_bus *nvdimm_bus,
|
|
struct nd_mapping *nd_mapping);
|
|
|
|
resource_size_t nd_pmem_max_contiguous_dpa(struct nd_region *nd_region,
|
|
struct nd_mapping *nd_mapping);
|
|
resource_size_t nd_region_allocatable_dpa(struct nd_region *nd_region);
|
|
resource_size_t nd_pmem_available_dpa(struct nd_region *nd_region,
|
|
struct nd_mapping *nd_mapping);
|
|
resource_size_t nd_region_available_dpa(struct nd_region *nd_region);
|
|
int nd_region_conflict(struct nd_region *nd_region, resource_size_t start,
|
|
resource_size_t size);
|
|
resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd,
|
|
struct nd_label_id *label_id);
|
|
int nvdimm_num_label_slots(struct nvdimm_drvdata *ndd);
|
|
void get_ndd(struct nvdimm_drvdata *ndd);
|
|
resource_size_t __nvdimm_namespace_capacity(struct nd_namespace_common *ndns);
|
|
void nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
|
|
void __nd_detach_ndns(struct device *dev, struct nd_namespace_common **_ndns);
|
|
bool nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
|
|
struct nd_namespace_common **_ndns);
|
|
bool __nd_attach_ndns(struct device *dev, struct nd_namespace_common *attach,
|
|
struct nd_namespace_common **_ndns);
|
|
ssize_t nd_namespace_store(struct device *dev,
|
|
struct nd_namespace_common **_ndns, const char *buf,
|
|
size_t len);
|
|
struct nd_pfn *to_nd_pfn_safe(struct device *dev);
|
|
bool is_nvdimm_bus(struct device *dev);
|
|
|
|
#if IS_ENABLED(CONFIG_ND_CLAIM)
|
|
int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio,
|
|
resource_size_t size);
|
|
void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio);
|
|
#else
|
|
static inline int devm_nsio_enable(struct device *dev,
|
|
struct nd_namespace_io *nsio, resource_size_t size)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
|
|
static inline void devm_nsio_disable(struct device *dev,
|
|
struct nd_namespace_io *nsio)
|
|
{
|
|
}
|
|
#endif
|
|
#endif /* __ND_CORE_H__ */
|