1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (c) 2011-2014, Intel Corporation. |
4 | */ |
5 | |
6 | #ifndef _NVME_H |
7 | #define _NVME_H |
8 | |
9 | #include <linux/nvme.h> |
10 | #include <linux/cdev.h> |
11 | #include <linux/pci.h> |
12 | #include <linux/kref.h> |
13 | #include <linux/blk-mq.h> |
14 | #include <linux/sed-opal.h> |
15 | #include <linux/fault-inject.h> |
16 | #include <linux/rcupdate.h> |
17 | #include <linux/wait.h> |
18 | #include <linux/t10-pi.h> |
19 | |
20 | #include <trace/events/block.h> |
21 | |
22 | extern const struct pr_ops nvme_pr_ops; |
23 | |
24 | extern unsigned int nvme_io_timeout; |
25 | #define NVME_IO_TIMEOUT (nvme_io_timeout * HZ) |
26 | |
27 | extern unsigned int admin_timeout; |
28 | #define NVME_ADMIN_TIMEOUT (admin_timeout * HZ) |
29 | |
30 | #define NVME_DEFAULT_KATO 5 |
31 | |
32 | #ifdef CONFIG_ARCH_NO_SG_CHAIN |
33 | #define NVME_INLINE_SG_CNT 0 |
34 | #define NVME_INLINE_METADATA_SG_CNT 0 |
35 | #else |
36 | #define NVME_INLINE_SG_CNT 2 |
37 | #define NVME_INLINE_METADATA_SG_CNT 1 |
38 | #endif |
39 | |
40 | /* |
41 | * Default to a 4K page size, with the intention to update this |
42 | * path in the future to accommodate architectures with differing |
43 | * kernel and IO page sizes. |
44 | */ |
45 | #define NVME_CTRL_PAGE_SHIFT 12 |
46 | #define NVME_CTRL_PAGE_SIZE (1 << NVME_CTRL_PAGE_SHIFT) |
47 | |
48 | extern struct workqueue_struct *nvme_wq; |
49 | extern struct workqueue_struct *nvme_reset_wq; |
50 | extern struct workqueue_struct *nvme_delete_wq; |
51 | |
52 | /* |
53 | * List of workarounds for devices that required behavior not specified in |
54 | * the standard. |
55 | */ |
56 | enum nvme_quirks { |
57 | /* |
58 | * Prefers I/O aligned to a stripe size specified in a vendor |
59 | * specific Identify field. |
60 | */ |
61 | NVME_QUIRK_STRIPE_SIZE = (1 << 0), |
62 | |
63 | /* |
64 | * The controller doesn't handle Identify value others than 0 or 1 |
65 | * correctly. |
66 | */ |
67 | NVME_QUIRK_IDENTIFY_CNS = (1 << 1), |
68 | |
69 | /* |
70 | * The controller deterministically returns O's on reads to |
71 | * logical blocks that deallocate was called on. |
72 | */ |
73 | NVME_QUIRK_DEALLOCATE_ZEROES = (1 << 2), |
74 | |
75 | /* |
76 | * The controller needs a delay before starts checking the device |
77 | * readiness, which is done by reading the NVME_CSTS_RDY bit. |
78 | */ |
79 | NVME_QUIRK_DELAY_BEFORE_CHK_RDY = (1 << 3), |
80 | |
81 | /* |
82 | * APST should not be used. |
83 | */ |
84 | NVME_QUIRK_NO_APST = (1 << 4), |
85 | |
86 | /* |
87 | * The deepest sleep state should not be used. |
88 | */ |
89 | NVME_QUIRK_NO_DEEPEST_PS = (1 << 5), |
90 | |
91 | /* |
92 | * Set MEDIUM priority on SQ creation |
93 | */ |
94 | NVME_QUIRK_MEDIUM_PRIO_SQ = (1 << 7), |
95 | |
96 | /* |
97 | * Ignore device provided subnqn. |
98 | */ |
99 | NVME_QUIRK_IGNORE_DEV_SUBNQN = (1 << 8), |
100 | |
101 | /* |
102 | * Broken Write Zeroes. |
103 | */ |
104 | NVME_QUIRK_DISABLE_WRITE_ZEROES = (1 << 9), |
105 | |
106 | /* |
107 | * Force simple suspend/resume path. |
108 | */ |
109 | NVME_QUIRK_SIMPLE_SUSPEND = (1 << 10), |
110 | |
111 | /* |
112 | * Use only one interrupt vector for all queues |
113 | */ |
114 | NVME_QUIRK_SINGLE_VECTOR = (1 << 11), |
115 | |
116 | /* |
117 | * Use non-standard 128 bytes SQEs. |
118 | */ |
119 | NVME_QUIRK_128_BYTES_SQES = (1 << 12), |
120 | |
121 | /* |
122 | * Prevent tag overlap between queues |
123 | */ |
124 | NVME_QUIRK_SHARED_TAGS = (1 << 13), |
125 | |
126 | /* |
127 | * Don't change the value of the temperature threshold feature |
128 | */ |
129 | NVME_QUIRK_NO_TEMP_THRESH_CHANGE = (1 << 14), |
130 | |
131 | /* |
132 | * The controller doesn't handle the Identify Namespace |
133 | * Identification Descriptor list subcommand despite claiming |
134 | * NVMe 1.3 compliance. |
135 | */ |
136 | NVME_QUIRK_NO_NS_DESC_LIST = (1 << 15), |
137 | |
138 | /* |
139 | * The controller does not properly handle DMA addresses over |
140 | * 48 bits. |
141 | */ |
142 | NVME_QUIRK_DMA_ADDRESS_BITS_48 = (1 << 16), |
143 | |
144 | /* |
145 | * The controller requires the command_id value be limited, so skip |
146 | * encoding the generation sequence number. |
147 | */ |
148 | NVME_QUIRK_SKIP_CID_GEN = (1 << 17), |
149 | |
150 | /* |
151 | * Reports garbage in the namespace identifiers (eui64, nguid, uuid). |
152 | */ |
153 | NVME_QUIRK_BOGUS_NID = (1 << 18), |
154 | |
155 | /* |
156 | * No temperature thresholds for channels other than 0 (Composite). |
157 | */ |
158 | NVME_QUIRK_NO_SECONDARY_TEMP_THRESH = (1 << 19), |
159 | }; |
160 | |
161 | /* |
162 | * Common request structure for NVMe passthrough. All drivers must have |
163 | * this structure as the first member of their request-private data. |
164 | */ |
165 | struct nvme_request { |
166 | struct nvme_command *cmd; |
167 | union nvme_result result; |
168 | u8 genctr; |
169 | u8 retries; |
170 | u8 flags; |
171 | u16 status; |
172 | #ifdef CONFIG_NVME_MULTIPATH |
173 | unsigned long start_time; |
174 | #endif |
175 | struct nvme_ctrl *ctrl; |
176 | }; |
177 | |
178 | /* |
179 | * Mark a bio as coming in through the mpath node. |
180 | */ |
181 | #define REQ_NVME_MPATH REQ_DRV |
182 | |
183 | enum { |
184 | NVME_REQ_CANCELLED = (1 << 0), |
185 | NVME_REQ_USERCMD = (1 << 1), |
186 | NVME_MPATH_IO_STATS = (1 << 2), |
187 | }; |
188 | |
189 | static inline struct nvme_request *nvme_req(struct request *req) |
190 | { |
191 | return blk_mq_rq_to_pdu(rq: req); |
192 | } |
193 | |
194 | static inline u16 nvme_req_qid(struct request *req) |
195 | { |
196 | if (!req->q->queuedata) |
197 | return 0; |
198 | |
199 | return req->mq_hctx->queue_num + 1; |
200 | } |
201 | |
202 | /* The below value is the specific amount of delay needed before checking |
203 | * readiness in case of the PCI_DEVICE(0x1c58, 0x0003), which needs the |
204 | * NVME_QUIRK_DELAY_BEFORE_CHK_RDY quirk enabled. The value (in ms) was |
205 | * found empirically. |
206 | */ |
207 | #define NVME_QUIRK_DELAY_AMOUNT 2300 |
208 | |
209 | /* |
210 | * enum nvme_ctrl_state: Controller state |
211 | * |
212 | * @NVME_CTRL_NEW: New controller just allocated, initial state |
213 | * @NVME_CTRL_LIVE: Controller is connected and I/O capable |
214 | * @NVME_CTRL_RESETTING: Controller is resetting (or scheduled reset) |
215 | * @NVME_CTRL_CONNECTING: Controller is disconnected, now connecting the |
216 | * transport |
217 | * @NVME_CTRL_DELETING: Controller is deleting (or scheduled deletion) |
218 | * @NVME_CTRL_DELETING_NOIO: Controller is deleting and I/O is not |
219 | * disabled/failed immediately. This state comes |
220 | * after all async event processing took place and |
221 | * before ns removal and the controller deletion |
222 | * progress |
223 | * @NVME_CTRL_DEAD: Controller is non-present/unresponsive during |
224 | * shutdown or removal. In this case we forcibly |
225 | * kill all inflight I/O as they have no chance to |
226 | * complete |
227 | */ |
228 | enum nvme_ctrl_state { |
229 | NVME_CTRL_NEW, |
230 | NVME_CTRL_LIVE, |
231 | NVME_CTRL_RESETTING, |
232 | NVME_CTRL_CONNECTING, |
233 | NVME_CTRL_DELETING, |
234 | NVME_CTRL_DELETING_NOIO, |
235 | NVME_CTRL_DEAD, |
236 | }; |
237 | |
238 | struct nvme_fault_inject { |
239 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
240 | struct fault_attr attr; |
241 | struct dentry *parent; |
242 | bool dont_retry; /* DNR, do not retry */ |
243 | u16 status; /* status code */ |
244 | #endif |
245 | }; |
246 | |
247 | enum nvme_ctrl_flags { |
248 | NVME_CTRL_FAILFAST_EXPIRED = 0, |
249 | NVME_CTRL_ADMIN_Q_STOPPED = 1, |
250 | NVME_CTRL_STARTED_ONCE = 2, |
251 | NVME_CTRL_STOPPED = 3, |
252 | NVME_CTRL_SKIP_ID_CNS_CS = 4, |
253 | NVME_CTRL_DIRTY_CAPABILITY = 5, |
254 | }; |
255 | |
256 | struct nvme_ctrl { |
257 | bool comp_seen; |
258 | bool identified; |
259 | enum nvme_ctrl_state state; |
260 | spinlock_t lock; |
261 | struct mutex scan_lock; |
262 | const struct nvme_ctrl_ops *ops; |
263 | struct request_queue *admin_q; |
264 | struct request_queue *connect_q; |
265 | struct request_queue *fabrics_q; |
266 | struct device *dev; |
267 | int instance; |
268 | int numa_node; |
269 | struct blk_mq_tag_set *tagset; |
270 | struct blk_mq_tag_set *admin_tagset; |
271 | struct list_head namespaces; |
272 | struct rw_semaphore namespaces_rwsem; |
273 | struct device ctrl_device; |
274 | struct device *device; /* char device */ |
275 | #ifdef CONFIG_NVME_HWMON |
276 | struct device *hwmon_device; |
277 | #endif |
278 | struct cdev cdev; |
279 | struct work_struct reset_work; |
280 | struct work_struct delete_work; |
281 | wait_queue_head_t state_wq; |
282 | |
283 | struct nvme_subsystem *subsys; |
284 | struct list_head subsys_entry; |
285 | |
286 | struct opal_dev *opal_dev; |
287 | |
288 | char name[12]; |
289 | u16 cntlid; |
290 | |
291 | u16 mtfa; |
292 | u32 ctrl_config; |
293 | u32 queue_count; |
294 | |
295 | u64 cap; |
296 | u32 max_hw_sectors; |
297 | u32 max_segments; |
298 | u32 max_integrity_segments; |
299 | u32 max_discard_sectors; |
300 | u32 max_discard_segments; |
301 | u32 max_zeroes_sectors; |
302 | #ifdef CONFIG_BLK_DEV_ZONED |
303 | u32 max_zone_append; |
304 | #endif |
305 | u16 crdt[3]; |
306 | u16 oncs; |
307 | u32 dmrsl; |
308 | u16 oacs; |
309 | u16 sqsize; |
310 | u32 max_namespaces; |
311 | atomic_t abort_limit; |
312 | u8 vwc; |
313 | u32 vs; |
314 | u32 sgls; |
315 | u16 kas; |
316 | u8 npss; |
317 | u8 apsta; |
318 | u16 wctemp; |
319 | u16 cctemp; |
320 | u32 oaes; |
321 | u32 aen_result; |
322 | u32 ctratt; |
323 | unsigned int shutdown_timeout; |
324 | unsigned int kato; |
325 | bool subsystem; |
326 | unsigned long quirks; |
327 | struct nvme_id_power_state psd[32]; |
328 | struct nvme_effects_log *effects; |
329 | struct xarray cels; |
330 | struct work_struct scan_work; |
331 | struct work_struct async_event_work; |
332 | struct delayed_work ka_work; |
333 | struct delayed_work failfast_work; |
334 | struct nvme_command ka_cmd; |
335 | unsigned long ka_last_check_time; |
336 | struct work_struct fw_act_work; |
337 | unsigned long events; |
338 | |
339 | #ifdef CONFIG_NVME_MULTIPATH |
340 | /* asymmetric namespace access: */ |
341 | u8 anacap; |
342 | u8 anatt; |
343 | u32 anagrpmax; |
344 | u32 nanagrpid; |
345 | struct mutex ana_lock; |
346 | struct nvme_ana_rsp_hdr *ana_log_buf; |
347 | size_t ana_log_size; |
348 | struct timer_list anatt_timer; |
349 | struct work_struct ana_work; |
350 | #endif |
351 | |
352 | #ifdef CONFIG_NVME_HOST_AUTH |
353 | struct work_struct dhchap_auth_work; |
354 | struct mutex dhchap_auth_mutex; |
355 | struct nvme_dhchap_queue_context *dhchap_ctxs; |
356 | struct nvme_dhchap_key *host_key; |
357 | struct nvme_dhchap_key *ctrl_key; |
358 | u16 transaction; |
359 | #endif |
360 | struct key *tls_key; |
361 | |
362 | /* Power saving configuration */ |
363 | u64 ps_max_latency_us; |
364 | bool apst_enabled; |
365 | |
366 | /* PCIe only: */ |
367 | u16 hmmaxd; |
368 | u32 hmpre; |
369 | u32 hmmin; |
370 | u32 hmminds; |
371 | |
372 | /* Fabrics only */ |
373 | u32 ioccsz; |
374 | u32 iorcsz; |
375 | u16 icdoff; |
376 | u16 maxcmd; |
377 | int nr_reconnects; |
378 | unsigned long flags; |
379 | struct nvmf_ctrl_options *opts; |
380 | |
381 | struct page *discard_page; |
382 | unsigned long discard_page_busy; |
383 | |
384 | struct nvme_fault_inject fault_inject; |
385 | |
386 | enum nvme_ctrl_type cntrltype; |
387 | enum nvme_dctype dctype; |
388 | }; |
389 | |
390 | enum nvme_iopolicy { |
391 | NVME_IOPOLICY_NUMA, |
392 | NVME_IOPOLICY_RR, |
393 | }; |
394 | |
395 | struct nvme_subsystem { |
396 | int instance; |
397 | struct device dev; |
398 | /* |
399 | * Because we unregister the device on the last put we need |
400 | * a separate refcount. |
401 | */ |
402 | struct kref ref; |
403 | struct list_head entry; |
404 | struct mutex lock; |
405 | struct list_head ctrls; |
406 | struct list_head nsheads; |
407 | char subnqn[NVMF_NQN_SIZE]; |
408 | char serial[20]; |
409 | char model[40]; |
410 | char firmware_rev[8]; |
411 | u8 cmic; |
412 | enum nvme_subsys_type subtype; |
413 | u16 vendor_id; |
414 | u16 awupf; /* 0's based awupf value. */ |
415 | struct ida ns_ida; |
416 | #ifdef CONFIG_NVME_MULTIPATH |
417 | enum nvme_iopolicy iopolicy; |
418 | #endif |
419 | }; |
420 | |
421 | /* |
422 | * Container structure for uniqueue namespace identifiers. |
423 | */ |
424 | struct nvme_ns_ids { |
425 | u8 eui64[8]; |
426 | u8 nguid[16]; |
427 | uuid_t uuid; |
428 | u8 csi; |
429 | }; |
430 | |
431 | /* |
432 | * Anchor structure for namespaces. There is one for each namespace in a |
433 | * NVMe subsystem that any of our controllers can see, and the namespace |
434 | * structure for each controller is chained of it. For private namespaces |
435 | * there is a 1:1 relation to our namespace structures, that is ->list |
436 | * only ever has a single entry for private namespaces. |
437 | */ |
438 | struct nvme_ns_head { |
439 | struct list_head list; |
440 | struct srcu_struct srcu; |
441 | struct nvme_subsystem *subsys; |
442 | unsigned ns_id; |
443 | struct nvme_ns_ids ids; |
444 | struct list_head entry; |
445 | struct kref ref; |
446 | bool shared; |
447 | int instance; |
448 | struct nvme_effects_log *effects; |
449 | |
450 | struct cdev cdev; |
451 | struct device cdev_device; |
452 | |
453 | struct gendisk *disk; |
454 | #ifdef CONFIG_NVME_MULTIPATH |
455 | struct bio_list requeue_list; |
456 | spinlock_t requeue_lock; |
457 | struct work_struct requeue_work; |
458 | struct mutex lock; |
459 | unsigned long flags; |
460 | #define NVME_NSHEAD_DISK_LIVE 0 |
461 | struct nvme_ns __rcu *current_path[]; |
462 | #endif |
463 | }; |
464 | |
465 | static inline bool nvme_ns_head_multipath(struct nvme_ns_head *head) |
466 | { |
467 | return IS_ENABLED(CONFIG_NVME_MULTIPATH) && head->disk; |
468 | } |
469 | |
470 | enum nvme_ns_features { |
471 | NVME_NS_EXT_LBAS = 1 << 0, /* support extended LBA format */ |
472 | NVME_NS_METADATA_SUPPORTED = 1 << 1, /* support getting generated md */ |
473 | NVME_NS_DEAC, /* DEAC bit in Write Zeores supported */ |
474 | }; |
475 | |
476 | struct nvme_ns { |
477 | struct list_head list; |
478 | |
479 | struct nvme_ctrl *ctrl; |
480 | struct request_queue *queue; |
481 | struct gendisk *disk; |
482 | #ifdef CONFIG_NVME_MULTIPATH |
483 | enum nvme_ana_state ana_state; |
484 | u32 ana_grpid; |
485 | #endif |
486 | struct list_head siblings; |
487 | struct kref kref; |
488 | struct nvme_ns_head *head; |
489 | |
490 | int lba_shift; |
491 | u16 ms; |
492 | u16 pi_size; |
493 | u16 sgs; |
494 | u32 sws; |
495 | u8 pi_type; |
496 | u8 guard_type; |
497 | #ifdef CONFIG_BLK_DEV_ZONED |
498 | u64 zsze; |
499 | #endif |
500 | unsigned long features; |
501 | unsigned long flags; |
502 | #define NVME_NS_REMOVING 0 |
503 | #define NVME_NS_ANA_PENDING 2 |
504 | #define NVME_NS_FORCE_RO 3 |
505 | #define NVME_NS_READY 4 |
506 | |
507 | struct cdev cdev; |
508 | struct device cdev_device; |
509 | |
510 | struct nvme_fault_inject fault_inject; |
511 | |
512 | }; |
513 | |
514 | /* NVMe ns supports metadata actions by the controller (generate/strip) */ |
515 | static inline bool nvme_ns_has_pi(struct nvme_ns *ns) |
516 | { |
517 | return ns->pi_type && ns->ms == ns->pi_size; |
518 | } |
519 | |
520 | struct nvme_ctrl_ops { |
521 | const char *name; |
522 | struct module *module; |
523 | unsigned int flags; |
524 | #define NVME_F_FABRICS (1 << 0) |
525 | #define NVME_F_METADATA_SUPPORTED (1 << 1) |
526 | #define NVME_F_BLOCKING (1 << 2) |
527 | |
528 | const struct attribute_group **dev_attr_groups; |
529 | int (*reg_read32)(struct nvme_ctrl *ctrl, u32 off, u32 *val); |
530 | int (*reg_write32)(struct nvme_ctrl *ctrl, u32 off, u32 val); |
531 | int (*reg_read64)(struct nvme_ctrl *ctrl, u32 off, u64 *val); |
532 | void (*free_ctrl)(struct nvme_ctrl *ctrl); |
533 | void (*submit_async_event)(struct nvme_ctrl *ctrl); |
534 | void (*delete_ctrl)(struct nvme_ctrl *ctrl); |
535 | void (*stop_ctrl)(struct nvme_ctrl *ctrl); |
536 | int (*get_address)(struct nvme_ctrl *ctrl, char *buf, int size); |
537 | void (*print_device_info)(struct nvme_ctrl *ctrl); |
538 | bool (*supports_pci_p2pdma)(struct nvme_ctrl *ctrl); |
539 | }; |
540 | |
541 | /* |
542 | * nvme command_id is constructed as such: |
543 | * | xxxx | xxxxxxxxxxxx | |
544 | * gen request tag |
545 | */ |
546 | #define nvme_genctr_mask(gen) (gen & 0xf) |
547 | #define nvme_cid_install_genctr(gen) (nvme_genctr_mask(gen) << 12) |
548 | #define nvme_genctr_from_cid(cid) ((cid & 0xf000) >> 12) |
549 | #define nvme_tag_from_cid(cid) (cid & 0xfff) |
550 | |
551 | static inline u16 nvme_cid(struct request *rq) |
552 | { |
553 | return nvme_cid_install_genctr(nvme_req(rq)->genctr) | rq->tag; |
554 | } |
555 | |
556 | static inline struct request *nvme_find_rq(struct blk_mq_tags *tags, |
557 | u16 command_id) |
558 | { |
559 | u8 genctr = nvme_genctr_from_cid(command_id); |
560 | u16 tag = nvme_tag_from_cid(command_id); |
561 | struct request *rq; |
562 | |
563 | rq = blk_mq_tag_to_rq(tags, tag); |
564 | if (unlikely(!rq)) { |
565 | pr_err("could not locate request for tag %#x\n" , |
566 | tag); |
567 | return NULL; |
568 | } |
569 | if (unlikely(nvme_genctr_mask(nvme_req(rq)->genctr) != genctr)) { |
570 | dev_err(nvme_req(rq)->ctrl->device, |
571 | "request %#x genctr mismatch (got %#x expected %#x)\n" , |
572 | tag, genctr, nvme_genctr_mask(nvme_req(rq)->genctr)); |
573 | return NULL; |
574 | } |
575 | return rq; |
576 | } |
577 | |
578 | static inline struct request *nvme_cid_to_rq(struct blk_mq_tags *tags, |
579 | u16 command_id) |
580 | { |
581 | return blk_mq_tag_to_rq(tags, nvme_tag_from_cid(command_id)); |
582 | } |
583 | |
584 | /* |
585 | * Return the length of the string without the space padding |
586 | */ |
587 | static inline int nvme_strlen(char *s, int len) |
588 | { |
589 | while (s[len - 1] == ' ') |
590 | len--; |
591 | return len; |
592 | } |
593 | |
594 | static inline void nvme_print_device_info(struct nvme_ctrl *ctrl) |
595 | { |
596 | struct nvme_subsystem *subsys = ctrl->subsys; |
597 | |
598 | if (ctrl->ops->print_device_info) { |
599 | ctrl->ops->print_device_info(ctrl); |
600 | return; |
601 | } |
602 | |
603 | dev_err(ctrl->device, |
604 | "VID:%04x model:%.*s firmware:%.*s\n" , subsys->vendor_id, |
605 | nvme_strlen(subsys->model, sizeof(subsys->model)), |
606 | subsys->model, nvme_strlen(subsys->firmware_rev, |
607 | sizeof(subsys->firmware_rev)), |
608 | subsys->firmware_rev); |
609 | } |
610 | |
611 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
612 | void nvme_fault_inject_init(struct nvme_fault_inject *fault_inj, |
613 | const char *dev_name); |
614 | void nvme_fault_inject_fini(struct nvme_fault_inject *fault_inject); |
615 | void nvme_should_fail(struct request *req); |
616 | #else |
617 | static inline void nvme_fault_inject_init(struct nvme_fault_inject *fault_inj, |
618 | const char *dev_name) |
619 | { |
620 | } |
621 | static inline void nvme_fault_inject_fini(struct nvme_fault_inject *fault_inj) |
622 | { |
623 | } |
624 | static inline void nvme_should_fail(struct request *req) {} |
625 | #endif |
626 | |
627 | bool nvme_wait_reset(struct nvme_ctrl *ctrl); |
628 | int nvme_try_sched_reset(struct nvme_ctrl *ctrl); |
629 | |
630 | static inline int nvme_reset_subsystem(struct nvme_ctrl *ctrl) |
631 | { |
632 | int ret; |
633 | |
634 | if (!ctrl->subsystem) |
635 | return -ENOTTY; |
636 | if (!nvme_wait_reset(ctrl)) |
637 | return -EBUSY; |
638 | |
639 | ret = ctrl->ops->reg_write32(ctrl, NVME_REG_NSSR, 0x4E564D65); |
640 | if (ret) |
641 | return ret; |
642 | |
643 | return nvme_try_sched_reset(ctrl); |
644 | } |
645 | |
646 | /* |
647 | * Convert a 512B sector number to a device logical block number. |
648 | */ |
649 | static inline u64 nvme_sect_to_lba(struct nvme_ns *ns, sector_t sector) |
650 | { |
651 | return sector >> (ns->lba_shift - SECTOR_SHIFT); |
652 | } |
653 | |
654 | /* |
655 | * Convert a device logical block number to a 512B sector number. |
656 | */ |
657 | static inline sector_t nvme_lba_to_sect(struct nvme_ns *ns, u64 lba) |
658 | { |
659 | return lba << (ns->lba_shift - SECTOR_SHIFT); |
660 | } |
661 | |
662 | /* |
663 | * Convert byte length to nvme's 0-based num dwords |
664 | */ |
665 | static inline u32 nvme_bytes_to_numd(size_t len) |
666 | { |
667 | return (len >> 2) - 1; |
668 | } |
669 | |
670 | static inline bool nvme_is_ana_error(u16 status) |
671 | { |
672 | switch (status & 0x7ff) { |
673 | case NVME_SC_ANA_TRANSITION: |
674 | case NVME_SC_ANA_INACCESSIBLE: |
675 | case NVME_SC_ANA_PERSISTENT_LOSS: |
676 | return true; |
677 | default: |
678 | return false; |
679 | } |
680 | } |
681 | |
682 | static inline bool nvme_is_path_error(u16 status) |
683 | { |
684 | /* check for a status code type of 'path related status' */ |
685 | return (status & 0x700) == 0x300; |
686 | } |
687 | |
688 | /* |
689 | * Fill in the status and result information from the CQE, and then figure out |
690 | * if blk-mq will need to use IPI magic to complete the request, and if yes do |
691 | * so. If not let the caller complete the request without an indirect function |
692 | * call. |
693 | */ |
694 | static inline bool nvme_try_complete_req(struct request *req, __le16 status, |
695 | union nvme_result result) |
696 | { |
697 | struct nvme_request *rq = nvme_req(req); |
698 | struct nvme_ctrl *ctrl = rq->ctrl; |
699 | |
700 | if (!(ctrl->quirks & NVME_QUIRK_SKIP_CID_GEN)) |
701 | rq->genctr++; |
702 | |
703 | rq->status = le16_to_cpu(status) >> 1; |
704 | rq->result = result; |
705 | /* inject error when permitted by fault injection framework */ |
706 | nvme_should_fail(req); |
707 | if (unlikely(blk_should_fake_timeout(req->q))) |
708 | return true; |
709 | return blk_mq_complete_request_remote(rq: req); |
710 | } |
711 | |
712 | static inline void nvme_get_ctrl(struct nvme_ctrl *ctrl) |
713 | { |
714 | get_device(dev: ctrl->device); |
715 | } |
716 | |
717 | static inline void nvme_put_ctrl(struct nvme_ctrl *ctrl) |
718 | { |
719 | put_device(dev: ctrl->device); |
720 | } |
721 | |
722 | static inline bool nvme_is_aen_req(u16 qid, __u16 command_id) |
723 | { |
724 | return !qid && |
725 | nvme_tag_from_cid(command_id) >= NVME_AQ_BLK_MQ_DEPTH; |
726 | } |
727 | |
728 | void nvme_complete_rq(struct request *req); |
729 | void nvme_complete_batch_req(struct request *req); |
730 | |
731 | static __always_inline void nvme_complete_batch(struct io_comp_batch *iob, |
732 | void (*fn)(struct request *rq)) |
733 | { |
734 | struct request *req; |
735 | |
736 | rq_list_for_each(&iob->req_list, req) { |
737 | fn(req); |
738 | nvme_complete_batch_req(req); |
739 | } |
740 | blk_mq_end_request_batch(ib: iob); |
741 | } |
742 | |
743 | blk_status_t nvme_host_path_error(struct request *req); |
744 | bool nvme_cancel_request(struct request *req, void *data); |
745 | void nvme_cancel_tagset(struct nvme_ctrl *ctrl); |
746 | void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl); |
747 | bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl, |
748 | enum nvme_ctrl_state new_state); |
749 | int nvme_disable_ctrl(struct nvme_ctrl *ctrl, bool shutdown); |
750 | int nvme_enable_ctrl(struct nvme_ctrl *ctrl); |
751 | int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev, |
752 | const struct nvme_ctrl_ops *ops, unsigned long quirks); |
753 | void nvme_uninit_ctrl(struct nvme_ctrl *ctrl); |
754 | void nvme_start_ctrl(struct nvme_ctrl *ctrl); |
755 | void nvme_stop_ctrl(struct nvme_ctrl *ctrl); |
756 | int nvme_init_ctrl_finish(struct nvme_ctrl *ctrl, bool was_suspended); |
757 | int nvme_alloc_admin_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set, |
758 | const struct blk_mq_ops *ops, unsigned int cmd_size); |
759 | void nvme_remove_admin_tag_set(struct nvme_ctrl *ctrl); |
760 | int nvme_alloc_io_tag_set(struct nvme_ctrl *ctrl, struct blk_mq_tag_set *set, |
761 | const struct blk_mq_ops *ops, unsigned int nr_maps, |
762 | unsigned int cmd_size); |
763 | void nvme_remove_io_tag_set(struct nvme_ctrl *ctrl); |
764 | |
765 | void nvme_remove_namespaces(struct nvme_ctrl *ctrl); |
766 | |
767 | void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status, |
768 | volatile union nvme_result *res); |
769 | |
770 | void nvme_quiesce_io_queues(struct nvme_ctrl *ctrl); |
771 | void nvme_unquiesce_io_queues(struct nvme_ctrl *ctrl); |
772 | void nvme_quiesce_admin_queue(struct nvme_ctrl *ctrl); |
773 | void nvme_unquiesce_admin_queue(struct nvme_ctrl *ctrl); |
774 | void nvme_mark_namespaces_dead(struct nvme_ctrl *ctrl); |
775 | void nvme_sync_queues(struct nvme_ctrl *ctrl); |
776 | void nvme_sync_io_queues(struct nvme_ctrl *ctrl); |
777 | void nvme_unfreeze(struct nvme_ctrl *ctrl); |
778 | void nvme_wait_freeze(struct nvme_ctrl *ctrl); |
779 | int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout); |
780 | void nvme_start_freeze(struct nvme_ctrl *ctrl); |
781 | |
782 | static inline enum req_op nvme_req_op(struct nvme_command *cmd) |
783 | { |
784 | return nvme_is_write(cmd) ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN; |
785 | } |
786 | |
787 | #define NVME_QID_ANY -1 |
788 | void nvme_init_request(struct request *req, struct nvme_command *cmd); |
789 | void nvme_cleanup_cmd(struct request *req); |
790 | blk_status_t nvme_setup_cmd(struct nvme_ns *ns, struct request *req); |
791 | blk_status_t nvme_fail_nonready_command(struct nvme_ctrl *ctrl, |
792 | struct request *req); |
793 | bool __nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq, |
794 | bool queue_live); |
795 | |
796 | static inline bool nvme_check_ready(struct nvme_ctrl *ctrl, struct request *rq, |
797 | bool queue_live) |
798 | { |
799 | if (likely(ctrl->state == NVME_CTRL_LIVE)) |
800 | return true; |
801 | if (ctrl->ops->flags & NVME_F_FABRICS && |
802 | ctrl->state == NVME_CTRL_DELETING) |
803 | return queue_live; |
804 | return __nvme_check_ready(ctrl, rq, queue_live); |
805 | } |
806 | |
807 | /* |
808 | * NSID shall be unique for all shared namespaces, or if at least one of the |
809 | * following conditions is met: |
810 | * 1. Namespace Management is supported by the controller |
811 | * 2. ANA is supported by the controller |
812 | * 3. NVM Set are supported by the controller |
813 | * |
814 | * In other case, private namespace are not required to report a unique NSID. |
815 | */ |
816 | static inline bool nvme_is_unique_nsid(struct nvme_ctrl *ctrl, |
817 | struct nvme_ns_head *head) |
818 | { |
819 | return head->shared || |
820 | (ctrl->oacs & NVME_CTRL_OACS_NS_MNGT_SUPP) || |
821 | (ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA) || |
822 | (ctrl->ctratt & NVME_CTRL_CTRATT_NVM_SETS); |
823 | } |
824 | |
825 | int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, |
826 | void *buf, unsigned bufflen); |
827 | int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, |
828 | union nvme_result *result, void *buffer, unsigned bufflen, |
829 | int qid, int at_head, |
830 | blk_mq_req_flags_t flags); |
831 | int nvme_set_features(struct nvme_ctrl *dev, unsigned int fid, |
832 | unsigned int dword11, void *buffer, size_t buflen, |
833 | u32 *result); |
834 | int nvme_get_features(struct nvme_ctrl *dev, unsigned int fid, |
835 | unsigned int dword11, void *buffer, size_t buflen, |
836 | u32 *result); |
837 | int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count); |
838 | void nvme_stop_keep_alive(struct nvme_ctrl *ctrl); |
839 | int nvme_reset_ctrl(struct nvme_ctrl *ctrl); |
840 | int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl); |
841 | int nvme_delete_ctrl(struct nvme_ctrl *ctrl); |
842 | void nvme_queue_scan(struct nvme_ctrl *ctrl); |
843 | int nvme_get_log(struct nvme_ctrl *ctrl, u32 nsid, u8 log_page, u8 lsp, u8 csi, |
844 | void *log, size_t size, u64 offset); |
845 | bool nvme_tryget_ns_head(struct nvme_ns_head *head); |
846 | void nvme_put_ns_head(struct nvme_ns_head *head); |
847 | int nvme_cdev_add(struct cdev *cdev, struct device *cdev_device, |
848 | const struct file_operations *fops, struct module *owner); |
849 | void nvme_cdev_del(struct cdev *cdev, struct device *cdev_device); |
850 | int nvme_ioctl(struct block_device *bdev, blk_mode_t mode, |
851 | unsigned int cmd, unsigned long arg); |
852 | long nvme_ns_chr_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
853 | int nvme_ns_head_ioctl(struct block_device *bdev, blk_mode_t mode, |
854 | unsigned int cmd, unsigned long arg); |
855 | long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd, |
856 | unsigned long arg); |
857 | long nvme_dev_ioctl(struct file *file, unsigned int cmd, |
858 | unsigned long arg); |
859 | int nvme_ns_chr_uring_cmd_iopoll(struct io_uring_cmd *ioucmd, |
860 | struct io_comp_batch *iob, unsigned int poll_flags); |
861 | int nvme_ns_chr_uring_cmd(struct io_uring_cmd *ioucmd, |
862 | unsigned int issue_flags); |
863 | int nvme_ns_head_chr_uring_cmd(struct io_uring_cmd *ioucmd, |
864 | unsigned int issue_flags); |
865 | int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo); |
866 | int nvme_dev_uring_cmd(struct io_uring_cmd *ioucmd, unsigned int issue_flags); |
867 | |
868 | extern const struct attribute_group *nvme_ns_id_attr_groups[]; |
869 | extern const struct pr_ops nvme_pr_ops; |
870 | extern const struct block_device_operations nvme_ns_head_ops; |
871 | extern const struct attribute_group nvme_dev_attrs_group; |
872 | extern const struct attribute_group *nvme_subsys_attrs_groups[]; |
873 | extern const struct attribute_group *nvme_dev_attr_groups[]; |
874 | extern const struct block_device_operations nvme_bdev_ops; |
875 | |
876 | void nvme_delete_ctrl_sync(struct nvme_ctrl *ctrl); |
877 | struct nvme_ns *nvme_find_path(struct nvme_ns_head *head); |
878 | #ifdef CONFIG_NVME_MULTIPATH |
879 | static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl) |
880 | { |
881 | return ctrl->ana_log_buf != NULL; |
882 | } |
883 | |
884 | void nvme_mpath_unfreeze(struct nvme_subsystem *subsys); |
885 | void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys); |
886 | void nvme_mpath_start_freeze(struct nvme_subsystem *subsys); |
887 | void nvme_mpath_default_iopolicy(struct nvme_subsystem *subsys); |
888 | void nvme_failover_req(struct request *req); |
889 | void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl); |
890 | int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl,struct nvme_ns_head *head); |
891 | void nvme_mpath_add_disk(struct nvme_ns *ns, __le32 anagrpid); |
892 | void nvme_mpath_remove_disk(struct nvme_ns_head *head); |
893 | int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id); |
894 | void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl); |
895 | void nvme_mpath_update(struct nvme_ctrl *ctrl); |
896 | void nvme_mpath_uninit(struct nvme_ctrl *ctrl); |
897 | void nvme_mpath_stop(struct nvme_ctrl *ctrl); |
898 | bool nvme_mpath_clear_current_path(struct nvme_ns *ns); |
899 | void nvme_mpath_revalidate_paths(struct nvme_ns *ns); |
900 | void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl); |
901 | void nvme_mpath_shutdown_disk(struct nvme_ns_head *head); |
902 | void nvme_mpath_start_request(struct request *rq); |
903 | void nvme_mpath_end_request(struct request *rq); |
904 | |
905 | static inline void nvme_trace_bio_complete(struct request *req) |
906 | { |
907 | struct nvme_ns *ns = req->q->queuedata; |
908 | |
909 | if ((req->cmd_flags & REQ_NVME_MPATH) && req->bio) |
910 | trace_block_bio_complete(q: ns->head->disk->queue, bio: req->bio); |
911 | } |
912 | |
913 | extern bool multipath; |
914 | extern struct device_attribute dev_attr_ana_grpid; |
915 | extern struct device_attribute dev_attr_ana_state; |
916 | extern struct device_attribute subsys_attr_iopolicy; |
917 | |
918 | #else |
919 | #define multipath false |
920 | static inline bool nvme_ctrl_use_ana(struct nvme_ctrl *ctrl) |
921 | { |
922 | return false; |
923 | } |
924 | static inline void nvme_failover_req(struct request *req) |
925 | { |
926 | } |
927 | static inline void nvme_kick_requeue_lists(struct nvme_ctrl *ctrl) |
928 | { |
929 | } |
930 | static inline int nvme_mpath_alloc_disk(struct nvme_ctrl *ctrl, |
931 | struct nvme_ns_head *head) |
932 | { |
933 | return 0; |
934 | } |
935 | static inline void nvme_mpath_add_disk(struct nvme_ns *ns, __le32 anagrpid) |
936 | { |
937 | } |
938 | static inline void nvme_mpath_remove_disk(struct nvme_ns_head *head) |
939 | { |
940 | } |
941 | static inline bool nvme_mpath_clear_current_path(struct nvme_ns *ns) |
942 | { |
943 | return false; |
944 | } |
945 | static inline void nvme_mpath_revalidate_paths(struct nvme_ns *ns) |
946 | { |
947 | } |
948 | static inline void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl) |
949 | { |
950 | } |
951 | static inline void nvme_mpath_shutdown_disk(struct nvme_ns_head *head) |
952 | { |
953 | } |
954 | static inline void nvme_trace_bio_complete(struct request *req) |
955 | { |
956 | } |
957 | static inline void nvme_mpath_init_ctrl(struct nvme_ctrl *ctrl) |
958 | { |
959 | } |
960 | static inline int nvme_mpath_init_identify(struct nvme_ctrl *ctrl, |
961 | struct nvme_id_ctrl *id) |
962 | { |
963 | if (ctrl->subsys->cmic & NVME_CTRL_CMIC_ANA) |
964 | dev_warn(ctrl->device, |
965 | "Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n" ); |
966 | return 0; |
967 | } |
968 | static inline void nvme_mpath_update(struct nvme_ctrl *ctrl) |
969 | { |
970 | } |
971 | static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl) |
972 | { |
973 | } |
974 | static inline void nvme_mpath_stop(struct nvme_ctrl *ctrl) |
975 | { |
976 | } |
977 | static inline void nvme_mpath_unfreeze(struct nvme_subsystem *subsys) |
978 | { |
979 | } |
980 | static inline void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys) |
981 | { |
982 | } |
983 | static inline void nvme_mpath_start_freeze(struct nvme_subsystem *subsys) |
984 | { |
985 | } |
986 | static inline void nvme_mpath_default_iopolicy(struct nvme_subsystem *subsys) |
987 | { |
988 | } |
989 | static inline void nvme_mpath_start_request(struct request *rq) |
990 | { |
991 | } |
992 | static inline void nvme_mpath_end_request(struct request *rq) |
993 | { |
994 | } |
995 | #endif /* CONFIG_NVME_MULTIPATH */ |
996 | |
997 | int nvme_revalidate_zones(struct nvme_ns *ns); |
998 | int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector, |
999 | unsigned int nr_zones, report_zones_cb cb, void *data); |
1000 | #ifdef CONFIG_BLK_DEV_ZONED |
1001 | int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf); |
1002 | blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns, struct request *req, |
1003 | struct nvme_command *cmnd, |
1004 | enum nvme_zone_mgmt_action action); |
1005 | #else |
1006 | static inline blk_status_t nvme_setup_zone_mgmt_send(struct nvme_ns *ns, |
1007 | struct request *req, struct nvme_command *cmnd, |
1008 | enum nvme_zone_mgmt_action action) |
1009 | { |
1010 | return BLK_STS_NOTSUPP; |
1011 | } |
1012 | |
1013 | static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf) |
1014 | { |
1015 | dev_warn(ns->ctrl->device, |
1016 | "Please enable CONFIG_BLK_DEV_ZONED to support ZNS devices\n" ); |
1017 | return -EPROTONOSUPPORT; |
1018 | } |
1019 | #endif |
1020 | |
1021 | static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev) |
1022 | { |
1023 | return dev_to_disk(dev)->private_data; |
1024 | } |
1025 | |
1026 | #ifdef CONFIG_NVME_HWMON |
1027 | int nvme_hwmon_init(struct nvme_ctrl *ctrl); |
1028 | void nvme_hwmon_exit(struct nvme_ctrl *ctrl); |
1029 | #else |
1030 | static inline int nvme_hwmon_init(struct nvme_ctrl *ctrl) |
1031 | { |
1032 | return 0; |
1033 | } |
1034 | |
1035 | static inline void nvme_hwmon_exit(struct nvme_ctrl *ctrl) |
1036 | { |
1037 | } |
1038 | #endif |
1039 | |
1040 | static inline void nvme_start_request(struct request *rq) |
1041 | { |
1042 | if (rq->cmd_flags & REQ_NVME_MPATH) |
1043 | nvme_mpath_start_request(rq); |
1044 | blk_mq_start_request(rq); |
1045 | } |
1046 | |
1047 | static inline bool nvme_ctrl_sgl_supported(struct nvme_ctrl *ctrl) |
1048 | { |
1049 | return ctrl->sgls & ((1 << 0) | (1 << 1)); |
1050 | } |
1051 | |
1052 | #ifdef CONFIG_NVME_HOST_AUTH |
1053 | int __init nvme_init_auth(void); |
1054 | void __exit nvme_exit_auth(void); |
1055 | int nvme_auth_init_ctrl(struct nvme_ctrl *ctrl); |
1056 | void nvme_auth_stop(struct nvme_ctrl *ctrl); |
1057 | int nvme_auth_negotiate(struct nvme_ctrl *ctrl, int qid); |
1058 | int nvme_auth_wait(struct nvme_ctrl *ctrl, int qid); |
1059 | void nvme_auth_free(struct nvme_ctrl *ctrl); |
1060 | #else |
1061 | static inline int nvme_auth_init_ctrl(struct nvme_ctrl *ctrl) |
1062 | { |
1063 | return 0; |
1064 | } |
1065 | static inline int __init nvme_init_auth(void) |
1066 | { |
1067 | return 0; |
1068 | } |
1069 | static inline void __exit nvme_exit_auth(void) |
1070 | { |
1071 | } |
1072 | static inline void nvme_auth_stop(struct nvme_ctrl *ctrl) {}; |
1073 | static inline int nvme_auth_negotiate(struct nvme_ctrl *ctrl, int qid) |
1074 | { |
1075 | return -EPROTONOSUPPORT; |
1076 | } |
1077 | static inline int nvme_auth_wait(struct nvme_ctrl *ctrl, int qid) |
1078 | { |
1079 | return NVME_SC_AUTH_REQUIRED; |
1080 | } |
1081 | static inline void nvme_auth_free(struct nvme_ctrl *ctrl) {}; |
1082 | #endif |
1083 | |
1084 | u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns, |
1085 | u8 opcode); |
1086 | u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u8 opcode); |
1087 | int nvme_execute_rq(struct request *rq, bool at_head); |
1088 | void nvme_passthru_end(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u32 effects, |
1089 | struct nvme_command *cmd, int status); |
1090 | struct nvme_ctrl *nvme_ctrl_from_file(struct file *file); |
1091 | struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid); |
1092 | void nvme_put_ns(struct nvme_ns *ns); |
1093 | |
1094 | static inline bool nvme_multi_css(struct nvme_ctrl *ctrl) |
1095 | { |
1096 | return (ctrl->ctrl_config & NVME_CC_CSS_MASK) == NVME_CC_CSS_CSI; |
1097 | } |
1098 | |
1099 | #ifdef CONFIG_NVME_VERBOSE_ERRORS |
1100 | const unsigned char *nvme_get_error_status_str(u16 status); |
1101 | const unsigned char *nvme_get_opcode_str(u8 opcode); |
1102 | const unsigned char *nvme_get_admin_opcode_str(u8 opcode); |
1103 | const unsigned char *nvme_get_fabrics_opcode_str(u8 opcode); |
1104 | #else /* CONFIG_NVME_VERBOSE_ERRORS */ |
1105 | static inline const unsigned char *nvme_get_error_status_str(u16 status) |
1106 | { |
1107 | return "I/O Error" ; |
1108 | } |
1109 | static inline const unsigned char *nvme_get_opcode_str(u8 opcode) |
1110 | { |
1111 | return "I/O Cmd" ; |
1112 | } |
1113 | static inline const unsigned char *nvme_get_admin_opcode_str(u8 opcode) |
1114 | { |
1115 | return "Admin Cmd" ; |
1116 | } |
1117 | |
1118 | static inline const unsigned char *nvme_get_fabrics_opcode_str(u8 opcode) |
1119 | { |
1120 | return "Fabrics Cmd" ; |
1121 | } |
1122 | #endif /* CONFIG_NVME_VERBOSE_ERRORS */ |
1123 | |
1124 | static inline const unsigned char *nvme_opcode_str(int qid, u8 opcode, u8 fctype) |
1125 | { |
1126 | if (opcode == nvme_fabrics_command) |
1127 | return nvme_get_fabrics_opcode_str(opcode: fctype); |
1128 | return qid ? nvme_get_opcode_str(opcode) : |
1129 | nvme_get_admin_opcode_str(opcode); |
1130 | } |
1131 | #endif /* _NVME_H */ |
1132 | |