ND_MAX_LANES = 256,
SECTOR_SHIFT = 9,
INT_LBASIZE_ALIGNMENT = 64,
+#if IS_ENABLED(CONFIG_NVDIMM_PFN)
+ ND_PFN_ALIGN = PAGES_PER_SECTION * PAGE_SIZE,
+ ND_PFN_MASK = ND_PFN_ALIGN - 1,
+#else
+ ND_PFN_ALIGN = 0,
+ ND_PFN_MASK = 0,
+#endif
};
struct nvdimm_drvdata {
struct device dev;
struct ida ns_ida;
struct ida btt_ida;
+ struct ida pfn_ida;
+ unsigned long flags;
struct device *ns_seed;
struct device *btt_seed;
+ struct device *pfn_seed;
u16 ndr_mappings;
u64 ndr_size;
u64 ndr_start;
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 npfns;
+ enum nd_pfn_mode mode;
+ struct nd_pfn_sb *pfn_sb;
+ struct nd_namespace_common *ndns;
+};
+
enum nd_async_mode {
ND_SYNC,
ND_ASYNC,
int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,
void *buf, size_t len);
struct nd_btt *to_nd_btt(struct device *dev);
-struct btt_sb;
-u64 nd_btt_sb_checksum(struct btt_sb *btt_sb);
+
+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 nd_namespace_common *ndns, void *drvdata);
bool is_nd_btt(struct device *dev);
struct device *nd_btt_create(struct nd_region *nd_region);
#else
-static inline nd_btt_probe(struct nd_namespace_common *ndns, void *drvdata)
+static inline int nd_btt_probe(struct nd_namespace_common *ndns, void *drvdata)
{
return -ENODEV;
}
{
return NULL;
}
+#endif
+struct nd_pfn *to_nd_pfn(struct device *dev);
+#if IS_ENABLED(CONFIG_NVDIMM_PFN)
+int nd_pfn_probe(struct nd_namespace_common *ndns, void *drvdata);
+bool is_nd_pfn(struct device *dev);
+struct device *nd_pfn_create(struct nd_region *nd_region);
+int nd_pfn_validate(struct nd_pfn *nd_pfn);
+#else
+static inline int nd_pfn_probe(struct nd_namespace_common *ndns, void *drvdata)
+{
+ 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)
+{
+ return -ENODEV;
+}
#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);
}
void nd_iostat_end(struct bio *bio, unsigned long start);
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__ */