1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. |
4 | */ |
5 | #ifndef __ND_H__ |
6 | #define __ND_H__ |
7 | #include <linux/libnvdimm.h> |
8 | #include <linux/badblocks.h> |
9 | #include <linux/blkdev.h> |
10 | #include <linux/device.h> |
11 | #include <linux/mutex.h> |
12 | #include <linux/ndctl.h> |
13 | #include <linux/types.h> |
14 | #include <linux/nd.h> |
15 | #include "label.h" |
16 | |
17 | enum { |
18 | /* |
19 | * Limits the maximum number of block apertures a dimm can |
20 | * support and is an input to the geometry/on-disk-format of a |
21 | * BTT instance |
22 | */ |
23 | ND_MAX_LANES = 256, |
24 | INT_LBASIZE_ALIGNMENT = 64, |
25 | NVDIMM_IO_ATOMIC = 1, |
26 | }; |
27 | |
28 | struct nvdimm_drvdata { |
29 | struct device *dev; |
30 | int nslabel_size; |
31 | struct nd_cmd_get_config_size nsarea; |
32 | void *data; |
33 | bool cxl; |
34 | int ns_current, ns_next; |
35 | struct resource dpa; |
36 | struct kref kref; |
37 | }; |
38 | |
39 | static inline const u8 *nsl_ref_name(struct nvdimm_drvdata *ndd, |
40 | struct nd_namespace_label *nd_label) |
41 | { |
42 | if (ndd->cxl) |
43 | return nd_label->cxl.name; |
44 | return nd_label->efi.name; |
45 | } |
46 | |
47 | static inline u8 *nsl_get_name(struct nvdimm_drvdata *ndd, |
48 | struct nd_namespace_label *nd_label, u8 *name) |
49 | { |
50 | if (ndd->cxl) |
51 | return memcpy(name, nd_label->cxl.name, NSLABEL_NAME_LEN); |
52 | return memcpy(name, nd_label->efi.name, NSLABEL_NAME_LEN); |
53 | } |
54 | |
55 | static inline u8 *nsl_set_name(struct nvdimm_drvdata *ndd, |
56 | struct nd_namespace_label *nd_label, u8 *name) |
57 | { |
58 | if (!name) |
59 | return NULL; |
60 | if (ndd->cxl) |
61 | return memcpy(nd_label->cxl.name, name, NSLABEL_NAME_LEN); |
62 | return memcpy(nd_label->efi.name, name, NSLABEL_NAME_LEN); |
63 | } |
64 | |
65 | static inline u32 nsl_get_slot(struct nvdimm_drvdata *ndd, |
66 | struct nd_namespace_label *nd_label) |
67 | { |
68 | if (ndd->cxl) |
69 | return __le32_to_cpu(nd_label->cxl.slot); |
70 | return __le32_to_cpu(nd_label->efi.slot); |
71 | } |
72 | |
73 | static inline void nsl_set_slot(struct nvdimm_drvdata *ndd, |
74 | struct nd_namespace_label *nd_label, u32 slot) |
75 | { |
76 | if (ndd->cxl) |
77 | nd_label->cxl.slot = __cpu_to_le32(slot); |
78 | else |
79 | nd_label->efi.slot = __cpu_to_le32(slot); |
80 | } |
81 | |
82 | static inline u64 nsl_get_checksum(struct nvdimm_drvdata *ndd, |
83 | struct nd_namespace_label *nd_label) |
84 | { |
85 | if (ndd->cxl) |
86 | return __le64_to_cpu(nd_label->cxl.checksum); |
87 | return __le64_to_cpu(nd_label->efi.checksum); |
88 | } |
89 | |
90 | static inline void nsl_set_checksum(struct nvdimm_drvdata *ndd, |
91 | struct nd_namespace_label *nd_label, |
92 | u64 checksum) |
93 | { |
94 | if (ndd->cxl) |
95 | nd_label->cxl.checksum = __cpu_to_le64(checksum); |
96 | else |
97 | nd_label->efi.checksum = __cpu_to_le64(checksum); |
98 | } |
99 | |
100 | static inline u32 nsl_get_flags(struct nvdimm_drvdata *ndd, |
101 | struct nd_namespace_label *nd_label) |
102 | { |
103 | if (ndd->cxl) |
104 | return __le32_to_cpu(nd_label->cxl.flags); |
105 | return __le32_to_cpu(nd_label->efi.flags); |
106 | } |
107 | |
108 | static inline void nsl_set_flags(struct nvdimm_drvdata *ndd, |
109 | struct nd_namespace_label *nd_label, u32 flags) |
110 | { |
111 | if (ndd->cxl) |
112 | nd_label->cxl.flags = __cpu_to_le32(flags); |
113 | else |
114 | nd_label->efi.flags = __cpu_to_le32(flags); |
115 | } |
116 | |
117 | static inline u64 nsl_get_dpa(struct nvdimm_drvdata *ndd, |
118 | struct nd_namespace_label *nd_label) |
119 | { |
120 | if (ndd->cxl) |
121 | return __le64_to_cpu(nd_label->cxl.dpa); |
122 | return __le64_to_cpu(nd_label->efi.dpa); |
123 | } |
124 | |
125 | static inline void nsl_set_dpa(struct nvdimm_drvdata *ndd, |
126 | struct nd_namespace_label *nd_label, u64 dpa) |
127 | { |
128 | if (ndd->cxl) |
129 | nd_label->cxl.dpa = __cpu_to_le64(dpa); |
130 | else |
131 | nd_label->efi.dpa = __cpu_to_le64(dpa); |
132 | } |
133 | |
134 | static inline u64 nsl_get_rawsize(struct nvdimm_drvdata *ndd, |
135 | struct nd_namespace_label *nd_label) |
136 | { |
137 | if (ndd->cxl) |
138 | return __le64_to_cpu(nd_label->cxl.rawsize); |
139 | return __le64_to_cpu(nd_label->efi.rawsize); |
140 | } |
141 | |
142 | static inline void nsl_set_rawsize(struct nvdimm_drvdata *ndd, |
143 | struct nd_namespace_label *nd_label, |
144 | u64 rawsize) |
145 | { |
146 | if (ndd->cxl) |
147 | nd_label->cxl.rawsize = __cpu_to_le64(rawsize); |
148 | else |
149 | nd_label->efi.rawsize = __cpu_to_le64(rawsize); |
150 | } |
151 | |
152 | static inline u64 nsl_get_isetcookie(struct nvdimm_drvdata *ndd, |
153 | struct nd_namespace_label *nd_label) |
154 | { |
155 | /* WARN future refactor attempts that break this assumption */ |
156 | if (dev_WARN_ONCE(ndd->dev, ndd->cxl, |
157 | "CXL labels do not use the isetcookie concept\n" )) |
158 | return 0; |
159 | return __le64_to_cpu(nd_label->efi.isetcookie); |
160 | } |
161 | |
162 | static inline void nsl_set_isetcookie(struct nvdimm_drvdata *ndd, |
163 | struct nd_namespace_label *nd_label, |
164 | u64 isetcookie) |
165 | { |
166 | if (!ndd->cxl) |
167 | nd_label->efi.isetcookie = __cpu_to_le64(isetcookie); |
168 | } |
169 | |
170 | static inline bool nsl_validate_isetcookie(struct nvdimm_drvdata *ndd, |
171 | struct nd_namespace_label *nd_label, |
172 | u64 cookie) |
173 | { |
174 | /* |
175 | * Let the EFI and CXL validation comingle, where fields that |
176 | * don't matter to CXL always validate. |
177 | */ |
178 | if (ndd->cxl) |
179 | return true; |
180 | return cookie == __le64_to_cpu(nd_label->efi.isetcookie); |
181 | } |
182 | |
183 | static inline u16 nsl_get_position(struct nvdimm_drvdata *ndd, |
184 | struct nd_namespace_label *nd_label) |
185 | { |
186 | if (ndd->cxl) |
187 | return __le16_to_cpu(nd_label->cxl.position); |
188 | return __le16_to_cpu(nd_label->efi.position); |
189 | } |
190 | |
191 | static inline void nsl_set_position(struct nvdimm_drvdata *ndd, |
192 | struct nd_namespace_label *nd_label, |
193 | u16 position) |
194 | { |
195 | if (ndd->cxl) |
196 | nd_label->cxl.position = __cpu_to_le16(position); |
197 | else |
198 | nd_label->efi.position = __cpu_to_le16(position); |
199 | } |
200 | |
201 | static inline u16 nsl_get_nlabel(struct nvdimm_drvdata *ndd, |
202 | struct nd_namespace_label *nd_label) |
203 | { |
204 | if (ndd->cxl) |
205 | return 0; |
206 | return __le16_to_cpu(nd_label->efi.nlabel); |
207 | } |
208 | |
209 | static inline void nsl_set_nlabel(struct nvdimm_drvdata *ndd, |
210 | struct nd_namespace_label *nd_label, |
211 | u16 nlabel) |
212 | { |
213 | if (!ndd->cxl) |
214 | nd_label->efi.nlabel = __cpu_to_le16(nlabel); |
215 | } |
216 | |
217 | static inline u16 nsl_get_nrange(struct nvdimm_drvdata *ndd, |
218 | struct nd_namespace_label *nd_label) |
219 | { |
220 | if (ndd->cxl) |
221 | return __le16_to_cpu(nd_label->cxl.nrange); |
222 | return 1; |
223 | } |
224 | |
225 | static inline void nsl_set_nrange(struct nvdimm_drvdata *ndd, |
226 | struct nd_namespace_label *nd_label, |
227 | u16 nrange) |
228 | { |
229 | if (ndd->cxl) |
230 | nd_label->cxl.nrange = __cpu_to_le16(nrange); |
231 | } |
232 | |
233 | static inline u64 nsl_get_lbasize(struct nvdimm_drvdata *ndd, |
234 | struct nd_namespace_label *nd_label) |
235 | { |
236 | /* |
237 | * Yes, for some reason the EFI labels convey a massive 64-bit |
238 | * lbasize, that got fixed for CXL. |
239 | */ |
240 | if (ndd->cxl) |
241 | return __le16_to_cpu(nd_label->cxl.lbasize); |
242 | return __le64_to_cpu(nd_label->efi.lbasize); |
243 | } |
244 | |
245 | static inline void nsl_set_lbasize(struct nvdimm_drvdata *ndd, |
246 | struct nd_namespace_label *nd_label, |
247 | u64 lbasize) |
248 | { |
249 | if (ndd->cxl) |
250 | nd_label->cxl.lbasize = __cpu_to_le16(lbasize); |
251 | else |
252 | nd_label->efi.lbasize = __cpu_to_le64(lbasize); |
253 | } |
254 | |
255 | static inline const uuid_t *nsl_get_uuid(struct nvdimm_drvdata *ndd, |
256 | struct nd_namespace_label *nd_label, |
257 | uuid_t *uuid) |
258 | { |
259 | if (ndd->cxl) |
260 | import_uuid(dst: uuid, src: nd_label->cxl.uuid); |
261 | else |
262 | import_uuid(dst: uuid, src: nd_label->efi.uuid); |
263 | return uuid; |
264 | } |
265 | |
266 | static inline const uuid_t *nsl_set_uuid(struct nvdimm_drvdata *ndd, |
267 | struct nd_namespace_label *nd_label, |
268 | const uuid_t *uuid) |
269 | { |
270 | if (ndd->cxl) |
271 | export_uuid(dst: nd_label->cxl.uuid, src: uuid); |
272 | else |
273 | export_uuid(dst: nd_label->efi.uuid, src: uuid); |
274 | return uuid; |
275 | } |
276 | |
277 | static inline bool nsl_uuid_equal(struct nvdimm_drvdata *ndd, |
278 | struct nd_namespace_label *nd_label, |
279 | const uuid_t *uuid) |
280 | { |
281 | uuid_t tmp; |
282 | |
283 | if (ndd->cxl) |
284 | import_uuid(dst: &tmp, src: nd_label->cxl.uuid); |
285 | else |
286 | import_uuid(dst: &tmp, src: nd_label->efi.uuid); |
287 | return uuid_equal(u1: &tmp, u2: uuid); |
288 | } |
289 | |
290 | static inline const u8 *nsl_uuid_raw(struct nvdimm_drvdata *ndd, |
291 | struct nd_namespace_label *nd_label) |
292 | { |
293 | if (ndd->cxl) |
294 | return nd_label->cxl.uuid; |
295 | return nd_label->efi.uuid; |
296 | } |
297 | |
298 | bool nsl_validate_type_guid(struct nvdimm_drvdata *ndd, |
299 | struct nd_namespace_label *nd_label, guid_t *guid); |
300 | enum nvdimm_claim_class nsl_get_claim_class(struct nvdimm_drvdata *ndd, |
301 | struct nd_namespace_label *nd_label); |
302 | |
303 | struct nd_region_data { |
304 | int ns_count; |
305 | int ns_active; |
306 | unsigned int hints_shift; |
307 | void __iomem *flush_wpq[]; |
308 | }; |
309 | |
310 | static inline void __iomem *ndrd_get_flush_wpq(struct nd_region_data *ndrd, |
311 | int dimm, int hint) |
312 | { |
313 | unsigned int num = 1 << ndrd->hints_shift; |
314 | unsigned int mask = num - 1; |
315 | |
316 | return ndrd->flush_wpq[dimm * num + (hint & mask)]; |
317 | } |
318 | |
319 | static inline void ndrd_set_flush_wpq(struct nd_region_data *ndrd, int dimm, |
320 | int hint, void __iomem *flush) |
321 | { |
322 | unsigned int num = 1 << ndrd->hints_shift; |
323 | unsigned int mask = num - 1; |
324 | |
325 | ndrd->flush_wpq[dimm * num + (hint & mask)] = flush; |
326 | } |
327 | |
328 | static inline struct nd_namespace_index *to_namespace_index( |
329 | struct nvdimm_drvdata *ndd, int i) |
330 | { |
331 | if (i < 0) |
332 | return NULL; |
333 | |
334 | return ndd->data + sizeof_namespace_index(ndd) * i; |
335 | } |
336 | |
337 | static inline struct nd_namespace_index *to_current_namespace_index( |
338 | struct nvdimm_drvdata *ndd) |
339 | { |
340 | return to_namespace_index(ndd, i: ndd->ns_current); |
341 | } |
342 | |
343 | static inline struct nd_namespace_index *to_next_namespace_index( |
344 | struct nvdimm_drvdata *ndd) |
345 | { |
346 | return to_namespace_index(ndd, i: ndd->ns_next); |
347 | } |
348 | |
349 | unsigned sizeof_namespace_label(struct nvdimm_drvdata *ndd); |
350 | |
351 | #define efi_namespace_label_has(ndd, field) \ |
352 | (!ndd->cxl && offsetof(struct nvdimm_efi_label, field) \ |
353 | < sizeof_namespace_label(ndd)) |
354 | |
355 | #define nd_dbg_dpa(r, d, res, fmt, arg...) \ |
356 | dev_dbg((r) ? &(r)->dev : (d)->dev, "%s: %.13s: %#llx @ %#llx " fmt, \ |
357 | (r) ? dev_name((d)->dev) : "", res ? res->name : "null", \ |
358 | (unsigned long long) (res ? resource_size(res) : 0), \ |
359 | (unsigned long long) (res ? res->start : 0), ##arg) |
360 | |
361 | #define for_each_dpa_resource(ndd, res) \ |
362 | for (res = (ndd)->dpa.child; res; res = res->sibling) |
363 | |
364 | #define for_each_dpa_resource_safe(ndd, res, next) \ |
365 | for (res = (ndd)->dpa.child, next = res ? res->sibling : NULL; \ |
366 | res; res = next, next = next ? next->sibling : NULL) |
367 | |
368 | struct nd_percpu_lane { |
369 | int count; |
370 | spinlock_t lock; |
371 | }; |
372 | |
373 | enum nd_label_flags { |
374 | ND_LABEL_REAP, |
375 | }; |
376 | struct nd_label_ent { |
377 | struct list_head list; |
378 | unsigned long flags; |
379 | struct nd_namespace_label *label; |
380 | }; |
381 | |
382 | enum nd_mapping_lock_class { |
383 | ND_MAPPING_CLASS0, |
384 | ND_MAPPING_UUID_SCAN, |
385 | }; |
386 | |
387 | struct nd_mapping { |
388 | struct nvdimm *nvdimm; |
389 | u64 start; |
390 | u64 size; |
391 | int position; |
392 | struct list_head labels; |
393 | struct mutex lock; |
394 | /* |
395 | * @ndd is for private use at region enable / disable time for |
396 | * get_ndd() + put_ndd(), all other nd_mapping to ndd |
397 | * conversions use to_ndd() which respects enabled state of the |
398 | * nvdimm. |
399 | */ |
400 | struct nvdimm_drvdata *ndd; |
401 | }; |
402 | |
403 | struct nd_region { |
404 | struct device dev; |
405 | struct ida ns_ida; |
406 | struct ida btt_ida; |
407 | struct ida pfn_ida; |
408 | struct ida dax_ida; |
409 | unsigned long flags; |
410 | struct device *ns_seed; |
411 | struct device *btt_seed; |
412 | struct device *pfn_seed; |
413 | struct device *dax_seed; |
414 | unsigned long align; |
415 | u16 ndr_mappings; |
416 | u64 ndr_size; |
417 | u64 ndr_start; |
418 | int id, num_lanes, ro, numa_node, target_node; |
419 | void *provider_data; |
420 | struct kernfs_node *bb_state; |
421 | struct badblocks bb; |
422 | struct nd_interleave_set *nd_set; |
423 | struct nd_percpu_lane __percpu *lane; |
424 | int (*flush)(struct nd_region *nd_region, struct bio *bio); |
425 | struct nd_mapping mapping[] __counted_by(ndr_mappings); |
426 | }; |
427 | |
428 | static inline bool nsl_validate_nlabel(struct nd_region *nd_region, |
429 | struct nvdimm_drvdata *ndd, |
430 | struct nd_namespace_label *nd_label) |
431 | { |
432 | if (ndd->cxl) |
433 | return true; |
434 | return nsl_get_nlabel(ndd, nd_label) == nd_region->ndr_mappings; |
435 | } |
436 | |
437 | /* |
438 | * Lookup next in the repeating sequence of 01, 10, and 11. |
439 | */ |
440 | static inline unsigned nd_inc_seq(unsigned seq) |
441 | { |
442 | static const unsigned next[] = { 0, 2, 3, 1 }; |
443 | |
444 | return next[seq & 3]; |
445 | } |
446 | |
447 | struct btt; |
448 | struct nd_btt { |
449 | struct device dev; |
450 | struct nd_namespace_common *ndns; |
451 | struct btt *btt; |
452 | unsigned long lbasize; |
453 | u64 size; |
454 | uuid_t *uuid; |
455 | int id; |
456 | int initial_offset; |
457 | u16 version_major; |
458 | u16 version_minor; |
459 | }; |
460 | |
461 | enum nd_pfn_mode { |
462 | PFN_MODE_NONE, |
463 | PFN_MODE_RAM, |
464 | PFN_MODE_PMEM, |
465 | }; |
466 | |
467 | struct nd_pfn { |
468 | int id; |
469 | uuid_t *uuid; |
470 | struct device dev; |
471 | unsigned long align; |
472 | unsigned long npfns; |
473 | enum nd_pfn_mode mode; |
474 | struct nd_pfn_sb *pfn_sb; |
475 | struct nd_namespace_common *ndns; |
476 | }; |
477 | |
478 | struct nd_dax { |
479 | struct nd_pfn nd_pfn; |
480 | }; |
481 | |
482 | static inline u32 nd_info_block_reserve(void) |
483 | { |
484 | return ALIGN(SZ_8K, PAGE_SIZE); |
485 | } |
486 | |
487 | enum nd_async_mode { |
488 | ND_SYNC, |
489 | ND_ASYNC, |
490 | }; |
491 | |
492 | int nd_integrity_init(struct gendisk *disk, unsigned long meta_size); |
493 | void wait_nvdimm_bus_probe_idle(struct device *dev); |
494 | void nd_device_register(struct device *dev); |
495 | void nd_device_unregister(struct device *dev, enum nd_async_mode mode); |
496 | void nd_device_notify(struct device *dev, enum nvdimm_event event); |
497 | int nd_uuid_store(struct device *dev, uuid_t **uuid_out, const char *buf, |
498 | size_t len); |
499 | ssize_t nd_size_select_show(unsigned long current_size, |
500 | const unsigned long *supported, char *buf); |
501 | ssize_t nd_size_select_store(struct device *dev, const char *buf, |
502 | unsigned long *current_size, const unsigned long *supported); |
503 | int __init nvdimm_init(void); |
504 | int __init nd_region_init(void); |
505 | int __init nd_label_init(void); |
506 | void nvdimm_exit(void); |
507 | void nd_region_exit(void); |
508 | struct nvdimm; |
509 | extern const struct attribute_group nd_device_attribute_group; |
510 | extern const struct attribute_group nd_numa_attribute_group; |
511 | extern const struct attribute_group *nvdimm_bus_attribute_groups[]; |
512 | struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping); |
513 | int nvdimm_check_config_data(struct device *dev); |
514 | int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd); |
515 | int nvdimm_init_config_data(struct nvdimm_drvdata *ndd); |
516 | int nvdimm_get_config_data(struct nvdimm_drvdata *ndd, void *buf, |
517 | size_t offset, size_t len); |
518 | int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset, |
519 | void *buf, size_t len); |
520 | long nvdimm_clear_poison(struct device *dev, phys_addr_t phys, |
521 | unsigned int len); |
522 | void nvdimm_set_labeling(struct device *dev); |
523 | void nvdimm_set_locked(struct device *dev); |
524 | void nvdimm_clear_locked(struct device *dev); |
525 | int nvdimm_security_setup_events(struct device *dev); |
526 | #if IS_ENABLED(CONFIG_NVDIMM_KEYS) |
527 | int nvdimm_security_unlock(struct device *dev); |
528 | #else |
529 | static inline int nvdimm_security_unlock(struct device *dev) |
530 | { |
531 | return 0; |
532 | } |
533 | #endif |
534 | struct nd_btt *to_nd_btt(struct device *dev); |
535 | |
536 | struct nd_gen_sb { |
537 | char reserved[SZ_4K - 8]; |
538 | __le64 checksum; |
539 | }; |
540 | |
541 | u64 nd_sb_checksum(struct nd_gen_sb *sb); |
542 | #if IS_ENABLED(CONFIG_BTT) |
543 | int nd_btt_probe(struct device *dev, struct nd_namespace_common *ndns); |
544 | bool is_nd_btt(struct device *dev); |
545 | struct device *nd_btt_create(struct nd_region *nd_region); |
546 | #else |
547 | static inline int nd_btt_probe(struct device *dev, |
548 | struct nd_namespace_common *ndns) |
549 | { |
550 | return -ENODEV; |
551 | } |
552 | |
553 | static inline bool is_nd_btt(struct device *dev) |
554 | { |
555 | return false; |
556 | } |
557 | |
558 | static inline struct device *nd_btt_create(struct nd_region *nd_region) |
559 | { |
560 | return NULL; |
561 | } |
562 | #endif |
563 | |
564 | struct nd_pfn *to_nd_pfn(struct device *dev); |
565 | #if IS_ENABLED(CONFIG_NVDIMM_PFN) |
566 | |
567 | #define MAX_NVDIMM_ALIGN 4 |
568 | |
569 | int nd_pfn_probe(struct device *dev, struct nd_namespace_common *ndns); |
570 | bool is_nd_pfn(struct device *dev); |
571 | struct device *nd_pfn_create(struct nd_region *nd_region); |
572 | struct device *nd_pfn_devinit(struct nd_pfn *nd_pfn, |
573 | struct nd_namespace_common *ndns); |
574 | int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig); |
575 | extern const struct attribute_group *nd_pfn_attribute_groups[]; |
576 | #else |
577 | static inline int nd_pfn_probe(struct device *dev, |
578 | struct nd_namespace_common *ndns) |
579 | { |
580 | return -ENODEV; |
581 | } |
582 | |
583 | static inline bool is_nd_pfn(struct device *dev) |
584 | { |
585 | return false; |
586 | } |
587 | |
588 | static inline struct device *nd_pfn_create(struct nd_region *nd_region) |
589 | { |
590 | return NULL; |
591 | } |
592 | |
593 | static inline int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig) |
594 | { |
595 | return -ENODEV; |
596 | } |
597 | #endif |
598 | |
599 | struct nd_dax *to_nd_dax(struct device *dev); |
600 | #if IS_ENABLED(CONFIG_NVDIMM_DAX) |
601 | int nd_dax_probe(struct device *dev, struct nd_namespace_common *ndns); |
602 | bool is_nd_dax(const struct device *dev); |
603 | struct device *nd_dax_create(struct nd_region *nd_region); |
604 | #else |
605 | static inline int nd_dax_probe(struct device *dev, |
606 | struct nd_namespace_common *ndns) |
607 | { |
608 | return -ENODEV; |
609 | } |
610 | |
611 | static inline bool is_nd_dax(const struct device *dev) |
612 | { |
613 | return false; |
614 | } |
615 | |
616 | static inline struct device *nd_dax_create(struct nd_region *nd_region) |
617 | { |
618 | return NULL; |
619 | } |
620 | #endif |
621 | |
622 | int nd_region_to_nstype(struct nd_region *nd_region); |
623 | int nd_region_register_namespaces(struct nd_region *nd_region, int *err); |
624 | u64 nd_region_interleave_set_cookie(struct nd_region *nd_region, |
625 | struct nd_namespace_index *nsindex); |
626 | u64 nd_region_interleave_set_altcookie(struct nd_region *nd_region); |
627 | void nvdimm_bus_lock(struct device *dev); |
628 | void nvdimm_bus_unlock(struct device *dev); |
629 | bool is_nvdimm_bus_locked(struct device *dev); |
630 | void nvdimm_check_and_set_ro(struct gendisk *disk); |
631 | void nvdimm_drvdata_release(struct kref *kref); |
632 | void put_ndd(struct nvdimm_drvdata *ndd); |
633 | int nd_label_reserve_dpa(struct nvdimm_drvdata *ndd); |
634 | void nvdimm_free_dpa(struct nvdimm_drvdata *ndd, struct resource *res); |
635 | struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd, |
636 | struct nd_label_id *label_id, resource_size_t start, |
637 | resource_size_t n); |
638 | resource_size_t nvdimm_namespace_capacity(struct nd_namespace_common *ndns); |
639 | bool nvdimm_namespace_locked(struct nd_namespace_common *ndns); |
640 | struct nd_namespace_common *nvdimm_namespace_common_probe(struct device *dev); |
641 | int nvdimm_namespace_attach_btt(struct nd_namespace_common *ndns); |
642 | int nvdimm_namespace_detach_btt(struct nd_btt *nd_btt); |
643 | const char *nvdimm_namespace_disk_name(struct nd_namespace_common *ndns, |
644 | char *name); |
645 | unsigned int pmem_sector_size(struct nd_namespace_common *ndns); |
646 | struct range; |
647 | void nvdimm_badblocks_populate(struct nd_region *nd_region, |
648 | struct badblocks *bb, const struct range *range); |
649 | int devm_namespace_enable(struct device *dev, struct nd_namespace_common *ndns, |
650 | resource_size_t size); |
651 | void devm_namespace_disable(struct device *dev, |
652 | struct nd_namespace_common *ndns); |
653 | #if IS_ENABLED(CONFIG_ND_CLAIM) |
654 | /* max struct page size independent of kernel config */ |
655 | #define MAX_STRUCT_PAGE_SIZE 64 |
656 | int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, struct dev_pagemap *pgmap); |
657 | #else |
658 | static inline int nvdimm_setup_pfn(struct nd_pfn *nd_pfn, |
659 | struct dev_pagemap *pgmap) |
660 | { |
661 | return -ENXIO; |
662 | } |
663 | #endif |
664 | int nd_region_activate(struct nd_region *nd_region); |
665 | static inline bool is_bad_pmem(struct badblocks *bb, sector_t sector, |
666 | unsigned int len) |
667 | { |
668 | if (bb->count) { |
669 | sector_t first_bad; |
670 | int num_bad; |
671 | |
672 | return !!badblocks_check(bb, s: sector, sectors: len / 512, first_bad: &first_bad, |
673 | bad_sectors: &num_bad); |
674 | } |
675 | |
676 | return false; |
677 | } |
678 | const uuid_t *nd_dev_to_uuid(struct device *dev); |
679 | bool pmem_should_map_pages(struct device *dev); |
680 | #endif /* __ND_H__ */ |
681 | |