/* * 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_CORE_H__ #define __ND_CORE_H__ #include #include #include #include #include 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 probe_wait; struct list_head list; struct device dev; int id, probe_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; enum nvdimm_security_state state; enum nvdimm_security_state ext_state; unsigned int overwrite_tmo; struct kernfs_node *overwrite_state; } sec; struct delayed_work dwork; }; static inline enum nvdimm_security_state nvdimm_security_state( struct nvdimm *nvdimm, bool master) { if (!nvdimm->sec.ops) return -ENXIO; return nvdimm->sec.ops->state(nvdimm, master); } int nvdimm_security_freeze(struct nvdimm *nvdimm); #if IS_ENABLED(CONFIG_NVDIMM_KEYS) int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid); int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid, unsigned int new_keyid, enum nvdimm_passphrase_type pass_type); int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid, enum nvdimm_passphrase_type pass_type); int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid); void nvdimm_security_overwrite_query(struct work_struct *work); #else static inline int nvdimm_security_disable(struct nvdimm *nvdimm, unsigned int keyid) { return -EOPNOTSUPP; } static inline int nvdimm_security_update(struct nvdimm *nvdimm, unsigned int keyid, unsigned int new_keyid, enum nvdimm_passphrase_type pass_type) { return -EOPNOTSUPP; } static inline int nvdimm_security_erase(struct nvdimm *nvdimm, unsigned int keyid, enum nvdimm_passphrase_type pass_type) { return -EOPNOTSUPP; } static inline int nvdimm_security_overwrite(struct nvdimm *nvdimm, unsigned int keyid) { return -EOPNOTSUPP; } static inline void nvdimm_security_overwrite_query(struct work_struct *work) { } #endif /** * struct blk_alloc_info - tracking info for BLK dpa scanning * @nd_mapping: blk region mapping boundaries * @available: decremented in alias_dpa_busy as aliased PMEM is scanned * @busy: decremented in blk_dpa_busy to account for ranges already * handled by alias_dpa_busy * @res: alias_dpa_busy interprets this a free space range that needs to * be truncated to the valid BLK allocation starting DPA, blk_dpa_busy * treats it as a busy range that needs the aliased PMEM ranges * truncated. */ struct blk_alloc_info { struct nd_mapping *nd_mapping; resource_size_t available, busy; struct resource *res; }; bool is_nvdimm(struct device *dev); bool is_nd_pmem(struct device *dev); bool is_nd_volatile(struct device *dev); bool is_nd_blk(struct device *dev); static inline bool is_nd_region(struct device *dev) { return is_nd_pmem(dev) || is_nd_blk(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); void nd_region_devs_exit(void); void nd_region_probe_success(struct nvdimm_bus *nvdimm_bus, struct device *dev); struct nd_region; 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); void nd_region_disable(struct nvdimm_bus *nvdimm_bus, struct device *dev); int nvdimm_bus_create_ndctl(struct nvdimm_bus *nvdimm_bus); void nvdimm_bus_destroy_ndctl(struct nvdimm_bus *nvdimm_bus); void nd_synchronize(void); int nvdimm_bus_register_dimms(struct nvdimm_bus *nvdimm_bus); int nvdimm_bus_register_regions(struct nvdimm_bus *nvdimm_bus); int nvdimm_bus_init_interleave_sets(struct nvdimm_bus *nvdimm_bus); void __nd_device_register(struct device *dev); int nd_match_dimm(struct device *dev, void *data); struct nd_label_id; char *nd_label_gen_id(struct nd_label_id *label_id, u8 *uuid, u32 flags); bool nd_is_uuid_unique(struct device *dev, u8 *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 *overlap); resource_size_t nd_blk_available_dpa(struct nd_region *nd_region); resource_size_t nd_region_available_dpa(struct nd_region *nd_region); resource_size_t nvdimm_allocated_dpa(struct nvdimm_drvdata *ndd, struct nd_label_id *label_id); int alias_dpa_busy(struct device *dev, void *data); struct resource *nsblk_add_resource(struct nd_region *nd_region, struct nvdimm_drvdata *ndd, struct nd_namespace_blk *nsblk, resource_size_t start); 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); #endif /* __ND_CORE_H__ */