| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dan J Williams | 1702 | 84.97% | 44 | 68.75% |
| Vishal Verma | 106 | 5.29% | 7 | 10.94% |
| Ross Zwisler | 73 | 3.64% | 1 | 1.56% |
| Toshi Kani | 59 | 2.95% | 4 | 6.25% |
| Alexander Duyck | 19 | 0.95% | 1 | 1.56% |
| Oliver O'Halloran | 15 | 0.75% | 1 | 1.56% |
| Christoph Hellwig | 8 | 0.40% | 2 | 3.12% |
| Jens Axboe | 8 | 0.40% | 1 | 1.56% |
| Randy Dunlap | 7 | 0.35% | 1 | 1.56% |
| Dave Jiang | 4 | 0.20% | 1 | 1.56% |
| Michael Callahan | 2 | 0.10% | 1 | 1.56% |
| Total | 2003 | 64 |
/* * 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_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; int ns_current, ns_next; struct resource dpa; struct kref kref; }; struct nd_region_data { int ns_count; int ns_active; unsigned int hints_shift; void __iomem *flush_wpq[0]; }; 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 namespace_label_has(ndd, field) \ (offsetof(struct nd_namespace_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; }; struct nd_label_ent { struct list_head list; 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; u16 ndr_mappings; u64 ndr_size; u64 ndr_start; int id, num_lanes, ro, numa_node; void *provider_data; struct kernfs_node *bb_state; struct badblocks bb; struct nd_interleave_set *nd_set; struct nd_percpu_lane __percpu *lane; struct nd_mapping mapping[0]; }; struct nd_blk_region { int (*enable)(struct nvdimm_bus *nvdimm_bus, struct device *dev); int (*do_io)(struct nd_blk_region *ndbr, resource_size_t dpa, void *iobuf, u64 len, int rw); void *blk_provider_data; struct nd_region nd_region; }; /* * 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; u8 *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; u8 *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; }; 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, u8 **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; 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_aliasing(struct device *dev); void nvdimm_set_locked(struct device *dev); void nvdimm_clear_locked(struct device *dev); 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) #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define PFN_DEFAULT_ALIGNMENT HPAGE_PMD_SIZE #else #define PFN_DEFAULT_ALIGNMENT PAGE_SIZE #endif 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 struct attribute_group nd_pfn_attribute_group; #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(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(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); int nvdimm_revalidate_disk(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); void nvdimm_badblocks_populate(struct nd_region *nd_region, struct badblocks *bb, const struct resource *res); #if IS_ENABLED(CONFIG_ND_CLAIM) int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap); int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio); void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio); #else static inline int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap) { return -ENXIO; } static inline int devm_nsio_enable(struct device *dev, struct nd_namespace_io *nsio) { return -ENXIO; } static inline void devm_nsio_disable(struct device *dev, struct nd_namespace_io *nsio) { } #endif int nd_blk_region_init(struct nd_region *nd_region); int nd_region_activate(struct nd_region *nd_region); void __nd_iostat_start(struct bio *bio, unsigned long *start); static inline bool nd_iostat_start(struct bio *bio, unsigned long *start) { struct gendisk *disk = bio->bi_disk; if (!blk_queue_io_stat(disk->queue)) return false; *start = jiffies; generic_start_io_acct(disk->queue, bio_op(bio), bio_sectors(bio), &disk->part0); return true; } static inline void nd_iostat_end(struct bio *bio, unsigned long start) { struct gendisk *disk = bio->bi_disk; generic_end_io_acct(disk->queue, bio_op(bio), &disk->part0, start); } 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; } 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__ */
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