Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dan J Williams | 3027 | 92.97% | 71 | 71.72% |
Vishal Verma | 87 | 2.67% | 7 | 7.07% |
Aneesh Kumar K.V | 29 | 0.89% | 3 | 3.03% |
Dave Jiang | 29 | 0.89% | 3 | 3.03% |
Ross Zwisler | 21 | 0.64% | 1 | 1.01% |
Pankaj Gupta | 12 | 0.37% | 1 | 1.01% |
Toshi Kani | 10 | 0.31% | 3 | 3.03% |
Christoph Hellwig | 10 | 0.31% | 3 | 3.03% |
Alexander Duyck | 9 | 0.28% | 1 | 1.01% |
Randy Dunlap | 9 | 0.28% | 1 | 1.01% |
Kees Cook | 5 | 0.15% | 1 | 1.01% |
Greg Kroah-Hartman | 2 | 0.06% | 1 | 1.01% |
Oliver O'Halloran | 2 | 0.06% | 1 | 1.01% |
Thomas Gleixner | 2 | 0.06% | 1 | 1.01% |
Gustavo A. R. Silva | 2 | 0.06% | 1 | 1.01% |
Total | 3256 | 99 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. */ #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, INT_LBASIZE_ALIGNMENT = 64, NVDIMM_IO_ATOMIC = 1, }; struct nvdimm_drvdata { struct device *dev; int nslabel_size; struct nd_cmd_get_config_size nsarea; void *data; bool cxl; int ns_current, ns_next; struct resource dpa; struct kref kref; }; static inline const u8 *nsl_ref_name(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return nd_label->cxl.name; return nd_label->efi.name; } static inline u8 *nsl_get_name(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u8 *name) { if (ndd->cxl) return memcpy(name, nd_label->cxl.name, NSLABEL_NAME_LEN); return memcpy(name, nd_label->efi.name, NSLABEL_NAME_LEN); } static inline u8 *nsl_set_name(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u8 *name) { if (!name) return NULL; if (ndd->cxl) return memcpy(nd_label->cxl.name, name, NSLABEL_NAME_LEN); return memcpy(nd_label->efi.name, name, NSLABEL_NAME_LEN); } static inline u32 nsl_get_slot(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le32_to_cpu(nd_label->cxl.slot); return __le32_to_cpu(nd_label->efi.slot); } static inline void nsl_set_slot(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u32 slot) { if (ndd->cxl) nd_label->cxl.slot = __cpu_to_le32(slot); else nd_label->efi.slot = __cpu_to_le32(slot); } static inline u64 nsl_get_checksum(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le64_to_cpu(nd_label->cxl.checksum); return __le64_to_cpu(nd_label->efi.checksum); } static inline void nsl_set_checksum(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 checksum) { if (ndd->cxl) nd_label->cxl.checksum = __cpu_to_le64(checksum); else nd_label->efi.checksum = __cpu_to_le64(checksum); } static inline u32 nsl_get_flags(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le32_to_cpu(nd_label->cxl.flags); return __le32_to_cpu(nd_label->efi.flags); } static inline void nsl_set_flags(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u32 flags) { if (ndd->cxl) nd_label->cxl.flags = __cpu_to_le32(flags); else nd_label->efi.flags = __cpu_to_le32(flags); } static inline u64 nsl_get_dpa(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le64_to_cpu(nd_label->cxl.dpa); return __le64_to_cpu(nd_label->efi.dpa); } static inline void nsl_set_dpa(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 dpa) { if (ndd->cxl) nd_label->cxl.dpa = __cpu_to_le64(dpa); else nd_label->efi.dpa = __cpu_to_le64(dpa); } static inline u64 nsl_get_rawsize(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le64_to_cpu(nd_label->cxl.rawsize); return __le64_to_cpu(nd_label->efi.rawsize); } static inline void nsl_set_rawsize(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 rawsize) { if (ndd->cxl) nd_label->cxl.rawsize = __cpu_to_le64(rawsize); else nd_label->efi.rawsize = __cpu_to_le64(rawsize); } static inline u64 nsl_get_isetcookie(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { /* WARN future refactor attempts that break this assumption */ if (dev_WARN_ONCE(ndd->dev, ndd->cxl, "CXL labels do not use the isetcookie concept\n")) return 0; return __le64_to_cpu(nd_label->efi.isetcookie); } static inline void nsl_set_isetcookie(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 isetcookie) { if (!ndd->cxl) nd_label->efi.isetcookie = __cpu_to_le64(isetcookie); } static inline bool nsl_validate_isetcookie(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 cookie) { /* * Let the EFI and CXL validation comingle, where fields that * don't matter to CXL always validate. */ if (ndd->cxl) return true; return cookie == __le64_to_cpu(nd_label->efi.isetcookie); } static inline u16 nsl_get_position(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le16_to_cpu(nd_label->cxl.position); return __le16_to_cpu(nd_label->efi.position); } static inline void nsl_set_position(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u16 position) { if (ndd->cxl) nd_label->cxl.position = __cpu_to_le16(position); else nd_label->efi.position = __cpu_to_le16(position); } static inline u16 nsl_get_nlabel(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return 0; return __le16_to_cpu(nd_label->efi.nlabel); } static inline void nsl_set_nlabel(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u16 nlabel) { if (!ndd->cxl) nd_label->efi.nlabel = __cpu_to_le16(nlabel); } static inline u16 nsl_get_nrange(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return __le16_to_cpu(nd_label->cxl.nrange); return 1; } static inline void nsl_set_nrange(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u16 nrange) { if (ndd->cxl) nd_label->cxl.nrange = __cpu_to_le16(nrange); } static inline u64 nsl_get_lbasize(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { /* * Yes, for some reason the EFI labels convey a massive 64-bit * lbasize, that got fixed for CXL. */ if (ndd->cxl) return __le16_to_cpu(nd_label->cxl.lbasize); return __le64_to_cpu(nd_label->efi.lbasize); } static inline void nsl_set_lbasize(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, u64 lbasize) { if (ndd->cxl) nd_label->cxl.lbasize = __cpu_to_le16(lbasize); else nd_label->efi.lbasize = __cpu_to_le64(lbasize); } static inline const uuid_t *nsl_get_uuid(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, uuid_t *uuid) { if (ndd->cxl) import_uuid(uuid, nd_label->cxl.uuid); else import_uuid(uuid, nd_label->efi.uuid); return uuid; } static inline const uuid_t *nsl_set_uuid(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, const uuid_t *uuid) { if (ndd->cxl) export_uuid(nd_label->cxl.uuid, uuid); else export_uuid(nd_label->efi.uuid, uuid); return uuid; } static inline bool nsl_uuid_equal(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, const uuid_t *uuid) { uuid_t tmp; if (ndd->cxl) import_uuid(&tmp, nd_label->cxl.uuid); else import_uuid(&tmp, nd_label->efi.uuid); return uuid_equal(&tmp, uuid); } static inline const u8 *nsl_uuid_raw(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return nd_label->cxl.uuid; return nd_label->efi.uuid; } bool nsl_validate_type_guid(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label, guid_t *guid); enum nvdimm_claim_class nsl_get_claim_class(struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label); struct nd_region_data { int ns_count; int ns_active; unsigned int hints_shift; void __iomem *flush_wpq[]; }; static inline void __iomem *ndrd_get_flush_wpq(struct nd_region_data *ndrd, int dimm, int hint) { unsigned int num = 1 << ndrd->hints_shift; unsigned int mask = num - 1; return ndrd->flush_wpq[dimm * num + (hint & mask)]; } static inline void ndrd_set_flush_wpq(struct nd_region_data *ndrd, int dimm, int hint, void __iomem *flush) { unsigned int num = 1 << ndrd->hints_shift; unsigned int mask = num - 1; ndrd->flush_wpq[dimm * num + (hint & mask)] = flush; } 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); } unsigned sizeof_namespace_label(struct nvdimm_drvdata *ndd); #define efi_namespace_label_has(ndd, field) \ (!ndd->cxl && offsetof(struct nvdimm_efi_label, field) \ < sizeof_namespace_label(ndd)) #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_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; }; enum nd_label_flags { ND_LABEL_REAP, }; struct nd_label_ent { struct list_head list; unsigned long flags; struct nd_namespace_label *label; }; enum nd_mapping_lock_class { ND_MAPPING_CLASS0, ND_MAPPING_UUID_SCAN, }; struct nd_mapping { struct nvdimm *nvdimm; u64 start; u64 size; int position; struct list_head labels; struct mutex lock; /* * @ndd is for private use at region enable / disable time for * get_ndd() + put_ndd(), all other nd_mapping to ndd * conversions use to_ndd() which respects enabled state of the * nvdimm. */ struct nvdimm_drvdata *ndd; }; 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; unsigned long align; u16 ndr_mappings; u64 ndr_size; u64 ndr_start; int id, num_lanes, ro, numa_node, target_node; void *provider_data; struct kernfs_node *bb_state; struct badblocks bb; struct nd_interleave_set *nd_set; struct nd_percpu_lane __percpu *lane; int (*flush)(struct nd_region *nd_region, struct bio *bio); struct nd_mapping mapping[] __counted_by(ndr_mappings); }; static inline bool nsl_validate_nlabel(struct nd_region *nd_region, struct nvdimm_drvdata *ndd, struct nd_namespace_label *nd_label) { if (ndd->cxl) return true; return nsl_get_nlabel(ndd, nd_label) == nd_region->ndr_mappings; } /* * 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; uuid_t *uuid; int id; int initial_offset; u16 version_major; u16 version_minor; }; enum nd_pfn_mode { PFN_MODE_NONE, PFN_MODE_RAM, PFN_MODE_PMEM, }; struct nd_pfn { int id; uuid_t *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; }; static inline u32 nd_info_block_reserve(void) { return ALIGN(SZ_8K, PAGE_SIZE); } 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, uuid_t **uuid_out, const char *buf, size_t len); ssize_t nd_size_select_show(unsigned long current_size, const unsigned long *supported, char *buf); ssize_t nd_size_select_store(struct device *dev, const char *buf, unsigned long *current_size, const unsigned long *supported); int __init nvdimm_init(void); int __init nd_region_init(void); int __init nd_label_init(void); void nvdimm_exit(void); void nd_region_exit(void); struct nvdimm; extern const struct attribute_group nd_device_attribute_group; extern const struct attribute_group nd_numa_attribute_group; extern const struct attribute_group *nvdimm_bus_attribute_groups[]; struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping); int nvdimm_check_config_data(struct device *dev); int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd); int nvdimm_init_config_data(struct nvdimm_drvdata *ndd); int nvdimm_get_config_data(struct nvdimm_drvdata *ndd, void *buf, size_t offset, size_t len); 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); void nvdimm_set_labeling(struct device *dev); void nvdimm_set_locked(struct device *dev); void nvdimm_clear_locked(struct device *dev); int nvdimm_security_setup_events(struct device *dev); #if IS_ENABLED(CONFIG_NVDIMM_KEYS) int nvdimm_security_unlock(struct device *dev); #else static inline int nvdimm_security_unlock(struct device *dev) { return 0; } #endif 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) #define MAX_NVDIMM_ALIGN 4 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 const struct attribute_group *nd_pfn_attribute_groups[]; #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(const 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(const struct device *dev) { return false; } static inline struct device *nd_dax_create(struct nd_region *nd_region) { return NULL; } #endif 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, struct nd_namespace_index *nsindex); u64 nd_region_interleave_set_altcookie(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); void nvdimm_check_and_set_ro(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); bool nvdimm_namespace_locked(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); unsigned int pmem_sector_size(struct nd_namespace_common *ndns); struct range; void nvdimm_badblocks_populate(struct nd_region *nd_region, struct badblocks *bb, const struct range *range); int devm_namespace_enable(struct device *dev, struct nd_namespace_common *ndns, resource_size_t size); void devm_namespace_disable(struct device *dev, struct nd_namespace_common *ndns); #if IS_ENABLED(CONFIG_ND_CLAIM) /* max struct page size independent of kernel config */ #define MAX_STRUCT_PAGE_SIZE 64 int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap); #else static inline int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap) { return -ENXIO; } #endif int nd_region_activate(struct nd_region *nd_region); 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; } const uuid_t *nd_dev_to_uuid(struct device *dev); bool pmem_should_map_pages(struct device *dev); #endif /* __ND_H__ */
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