diff options
Diffstat (limited to 'drivers/nvdimm/nd.h')
| -rw-r--r-- | drivers/nvdimm/nd.h | 67 |
1 files changed, 64 insertions, 3 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h index c41f53e74..417e521d2 100644 --- a/drivers/nvdimm/nd.h +++ b/drivers/nvdimm/nd.h @@ -29,6 +29,13 @@ enum { 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 { @@ -92,8 +99,11 @@ struct nd_region { 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; @@ -133,6 +143,22 @@ struct nd_btt { 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, @@ -159,14 +185,19 @@ 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); 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; } @@ -180,8 +211,36 @@ 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 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); @@ -217,4 +276,6 @@ static inline bool nd_iostat_start(struct bio *bio, unsigned long *start) } 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__ */ |