1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Definitions for the NVM Express interface
4 * Copyright (c) 2011-2014, Intel Corporation.
5 */
6
7#ifndef _LINUX_NVME_H
8#define _LINUX_NVME_H
9
10#include <linux/types.h>
11#include <linux/uuid.h>
12
13/* NQN names in commands fields specified one size */
14#define NVMF_NQN_FIELD_LEN 256
15
16/* However the max length of a qualified name is another size */
17#define NVMF_NQN_SIZE 223
18
19#define NVMF_TRSVCID_SIZE 32
20#define NVMF_TRADDR_SIZE 256
21#define NVMF_TSAS_SIZE 256
22
23#define NVME_DISC_SUBSYS_NAME "nqn.2014-08.org.nvmexpress.discovery"
24
25#define NVME_RDMA_IP_PORT 4420
26
27#define NVME_NSID_ALL 0xffffffff
28
29enum nvme_subsys_type {
30 NVME_NQN_DISC = 1, /* Discovery type target subsystem */
31 NVME_NQN_NVME = 2, /* NVME type target subsystem */
32};
33
34/* Address Family codes for Discovery Log Page entry ADRFAM field */
35enum {
36 NVMF_ADDR_FAMILY_PCI = 0, /* PCIe */
37 NVMF_ADDR_FAMILY_IP4 = 1, /* IP4 */
38 NVMF_ADDR_FAMILY_IP6 = 2, /* IP6 */
39 NVMF_ADDR_FAMILY_IB = 3, /* InfiniBand */
40 NVMF_ADDR_FAMILY_FC = 4, /* Fibre Channel */
41};
42
43/* Transport Type codes for Discovery Log Page entry TRTYPE field */
44enum {
45 NVMF_TRTYPE_RDMA = 1, /* RDMA */
46 NVMF_TRTYPE_FC = 2, /* Fibre Channel */
47 NVMF_TRTYPE_TCP = 3, /* TCP/IP */
48 NVMF_TRTYPE_LOOP = 254, /* Reserved for host usage */
49 NVMF_TRTYPE_MAX,
50};
51
52/* Transport Requirements codes for Discovery Log Page entry TREQ field */
53enum {
54 NVMF_TREQ_NOT_SPECIFIED = 0, /* Not specified */
55 NVMF_TREQ_REQUIRED = 1, /* Required */
56 NVMF_TREQ_NOT_REQUIRED = 2, /* Not Required */
57#define NVME_TREQ_SECURE_CHANNEL_MASK \
58 (NVMF_TREQ_REQUIRED | NVMF_TREQ_NOT_REQUIRED)
59
60 NVMF_TREQ_DISABLE_SQFLOW = (1 << 2), /* Supports SQ flow control disable */
61};
62
63/* RDMA QP Service Type codes for Discovery Log Page entry TSAS
64 * RDMA_QPTYPE field
65 */
66enum {
67 NVMF_RDMA_QPTYPE_CONNECTED = 1, /* Reliable Connected */
68 NVMF_RDMA_QPTYPE_DATAGRAM = 2, /* Reliable Datagram */
69};
70
71/* RDMA QP Service Type codes for Discovery Log Page entry TSAS
72 * RDMA_QPTYPE field
73 */
74enum {
75 NVMF_RDMA_PRTYPE_NOT_SPECIFIED = 1, /* No Provider Specified */
76 NVMF_RDMA_PRTYPE_IB = 2, /* InfiniBand */
77 NVMF_RDMA_PRTYPE_ROCE = 3, /* InfiniBand RoCE */
78 NVMF_RDMA_PRTYPE_ROCEV2 = 4, /* InfiniBand RoCEV2 */
79 NVMF_RDMA_PRTYPE_IWARP = 5, /* IWARP */
80};
81
82/* RDMA Connection Management Service Type codes for Discovery Log Page
83 * entry TSAS RDMA_CMS field
84 */
85enum {
86 NVMF_RDMA_CMS_RDMA_CM = 1, /* Sockets based endpoint addressing */
87};
88
89#define NVME_AQ_DEPTH 32
90#define NVME_NR_AEN_COMMANDS 1
91#define NVME_AQ_BLK_MQ_DEPTH (NVME_AQ_DEPTH - NVME_NR_AEN_COMMANDS)
92
93/*
94 * Subtract one to leave an empty queue entry for 'Full Queue' condition. See
95 * NVM-Express 1.2 specification, section 4.1.2.
96 */
97#define NVME_AQ_MQ_TAG_DEPTH (NVME_AQ_BLK_MQ_DEPTH - 1)
98
99enum {
100 NVME_REG_CAP = 0x0000, /* Controller Capabilities */
101 NVME_REG_VS = 0x0008, /* Version */
102 NVME_REG_INTMS = 0x000c, /* Interrupt Mask Set */
103 NVME_REG_INTMC = 0x0010, /* Interrupt Mask Clear */
104 NVME_REG_CC = 0x0014, /* Controller Configuration */
105 NVME_REG_CSTS = 0x001c, /* Controller Status */
106 NVME_REG_NSSR = 0x0020, /* NVM Subsystem Reset */
107 NVME_REG_AQA = 0x0024, /* Admin Queue Attributes */
108 NVME_REG_ASQ = 0x0028, /* Admin SQ Base Address */
109 NVME_REG_ACQ = 0x0030, /* Admin CQ Base Address */
110 NVME_REG_CMBLOC = 0x0038, /* Controller Memory Buffer Location */
111 NVME_REG_CMBSZ = 0x003c, /* Controller Memory Buffer Size */
112 NVME_REG_DBS = 0x1000, /* SQ 0 Tail Doorbell */
113};
114
115#define NVME_CAP_MQES(cap) ((cap) & 0xffff)
116#define NVME_CAP_TIMEOUT(cap) (((cap) >> 24) & 0xff)
117#define NVME_CAP_STRIDE(cap) (((cap) >> 32) & 0xf)
118#define NVME_CAP_NSSRC(cap) (((cap) >> 36) & 0x1)
119#define NVME_CAP_MPSMIN(cap) (((cap) >> 48) & 0xf)
120#define NVME_CAP_MPSMAX(cap) (((cap) >> 52) & 0xf)
121
122#define NVME_CMB_BIR(cmbloc) ((cmbloc) & 0x7)
123#define NVME_CMB_OFST(cmbloc) (((cmbloc) >> 12) & 0xfffff)
124
125enum {
126 NVME_CMBSZ_SQS = 1 << 0,
127 NVME_CMBSZ_CQS = 1 << 1,
128 NVME_CMBSZ_LISTS = 1 << 2,
129 NVME_CMBSZ_RDS = 1 << 3,
130 NVME_CMBSZ_WDS = 1 << 4,
131
132 NVME_CMBSZ_SZ_SHIFT = 12,
133 NVME_CMBSZ_SZ_MASK = 0xfffff,
134
135 NVME_CMBSZ_SZU_SHIFT = 8,
136 NVME_CMBSZ_SZU_MASK = 0xf,
137};
138
139/*
140 * Submission and Completion Queue Entry Sizes for the NVM command set.
141 * (In bytes and specified as a power of two (2^n)).
142 */
143#define NVME_NVM_IOSQES 6
144#define NVME_NVM_IOCQES 4
145
146enum {
147 NVME_CC_ENABLE = 1 << 0,
148 NVME_CC_CSS_NVM = 0 << 4,
149 NVME_CC_EN_SHIFT = 0,
150 NVME_CC_CSS_SHIFT = 4,
151 NVME_CC_MPS_SHIFT = 7,
152 NVME_CC_AMS_SHIFT = 11,
153 NVME_CC_SHN_SHIFT = 14,
154 NVME_CC_IOSQES_SHIFT = 16,
155 NVME_CC_IOCQES_SHIFT = 20,
156 NVME_CC_AMS_RR = 0 << NVME_CC_AMS_SHIFT,
157 NVME_CC_AMS_WRRU = 1 << NVME_CC_AMS_SHIFT,
158 NVME_CC_AMS_VS = 7 << NVME_CC_AMS_SHIFT,
159 NVME_CC_SHN_NONE = 0 << NVME_CC_SHN_SHIFT,
160 NVME_CC_SHN_NORMAL = 1 << NVME_CC_SHN_SHIFT,
161 NVME_CC_SHN_ABRUPT = 2 << NVME_CC_SHN_SHIFT,
162 NVME_CC_SHN_MASK = 3 << NVME_CC_SHN_SHIFT,
163 NVME_CC_IOSQES = NVME_NVM_IOSQES << NVME_CC_IOSQES_SHIFT,
164 NVME_CC_IOCQES = NVME_NVM_IOCQES << NVME_CC_IOCQES_SHIFT,
165 NVME_CSTS_RDY = 1 << 0,
166 NVME_CSTS_CFS = 1 << 1,
167 NVME_CSTS_NSSRO = 1 << 4,
168 NVME_CSTS_PP = 1 << 5,
169 NVME_CSTS_SHST_NORMAL = 0 << 2,
170 NVME_CSTS_SHST_OCCUR = 1 << 2,
171 NVME_CSTS_SHST_CMPLT = 2 << 2,
172 NVME_CSTS_SHST_MASK = 3 << 2,
173};
174
175struct nvme_id_power_state {
176 __le16 max_power; /* centiwatts */
177 __u8 rsvd2;
178 __u8 flags;
179 __le32 entry_lat; /* microseconds */
180 __le32 exit_lat; /* microseconds */
181 __u8 read_tput;
182 __u8 read_lat;
183 __u8 write_tput;
184 __u8 write_lat;
185 __le16 idle_power;
186 __u8 idle_scale;
187 __u8 rsvd19;
188 __le16 active_power;
189 __u8 active_work_scale;
190 __u8 rsvd23[9];
191};
192
193enum {
194 NVME_PS_FLAGS_MAX_POWER_SCALE = 1 << 0,
195 NVME_PS_FLAGS_NON_OP_STATE = 1 << 1,
196};
197
198enum nvme_ctrl_attr {
199 NVME_CTRL_ATTR_HID_128_BIT = (1 << 0),
200 NVME_CTRL_ATTR_TBKAS = (1 << 6),
201};
202
203struct nvme_id_ctrl {
204 __le16 vid;
205 __le16 ssvid;
206 char sn[20];
207 char mn[40];
208 char fr[8];
209 __u8 rab;
210 __u8 ieee[3];
211 __u8 cmic;
212 __u8 mdts;
213 __le16 cntlid;
214 __le32 ver;
215 __le32 rtd3r;
216 __le32 rtd3e;
217 __le32 oaes;
218 __le32 ctratt;
219 __u8 rsvd100[28];
220 __le16 crdt1;
221 __le16 crdt2;
222 __le16 crdt3;
223 __u8 rsvd134[122];
224 __le16 oacs;
225 __u8 acl;
226 __u8 aerl;
227 __u8 frmw;
228 __u8 lpa;
229 __u8 elpe;
230 __u8 npss;
231 __u8 avscc;
232 __u8 apsta;
233 __le16 wctemp;
234 __le16 cctemp;
235 __le16 mtfa;
236 __le32 hmpre;
237 __le32 hmmin;
238 __u8 tnvmcap[16];
239 __u8 unvmcap[16];
240 __le32 rpmbs;
241 __le16 edstt;
242 __u8 dsto;
243 __u8 fwug;
244 __le16 kas;
245 __le16 hctma;
246 __le16 mntmt;
247 __le16 mxtmt;
248 __le32 sanicap;
249 __le32 hmminds;
250 __le16 hmmaxd;
251 __u8 rsvd338[4];
252 __u8 anatt;
253 __u8 anacap;
254 __le32 anagrpmax;
255 __le32 nanagrpid;
256 __u8 rsvd352[160];
257 __u8 sqes;
258 __u8 cqes;
259 __le16 maxcmd;
260 __le32 nn;
261 __le16 oncs;
262 __le16 fuses;
263 __u8 fna;
264 __u8 vwc;
265 __le16 awun;
266 __le16 awupf;
267 __u8 nvscc;
268 __u8 nwpc;
269 __le16 acwu;
270 __u8 rsvd534[2];
271 __le32 sgls;
272 __le32 mnan;
273 __u8 rsvd544[224];
274 char subnqn[256];
275 __u8 rsvd1024[768];
276 __le32 ioccsz;
277 __le32 iorcsz;
278 __le16 icdoff;
279 __u8 ctrattr;
280 __u8 msdbd;
281 __u8 rsvd1804[244];
282 struct nvme_id_power_state psd[32];
283 __u8 vs[1024];
284};
285
286enum {
287 NVME_CTRL_ONCS_COMPARE = 1 << 0,
288 NVME_CTRL_ONCS_WRITE_UNCORRECTABLE = 1 << 1,
289 NVME_CTRL_ONCS_DSM = 1 << 2,
290 NVME_CTRL_ONCS_WRITE_ZEROES = 1 << 3,
291 NVME_CTRL_ONCS_TIMESTAMP = 1 << 6,
292 NVME_CTRL_VWC_PRESENT = 1 << 0,
293 NVME_CTRL_OACS_SEC_SUPP = 1 << 0,
294 NVME_CTRL_OACS_DIRECTIVES = 1 << 5,
295 NVME_CTRL_OACS_DBBUF_SUPP = 1 << 8,
296 NVME_CTRL_LPA_CMD_EFFECTS_LOG = 1 << 1,
297};
298
299struct nvme_lbaf {
300 __le16 ms;
301 __u8 ds;
302 __u8 rp;
303};
304
305struct nvme_id_ns {
306 __le64 nsze;
307 __le64 ncap;
308 __le64 nuse;
309 __u8 nsfeat;
310 __u8 nlbaf;
311 __u8 flbas;
312 __u8 mc;
313 __u8 dpc;
314 __u8 dps;
315 __u8 nmic;
316 __u8 rescap;
317 __u8 fpi;
318 __u8 rsvd33;
319 __le16 nawun;
320 __le16 nawupf;
321 __le16 nacwu;
322 __le16 nabsn;
323 __le16 nabo;
324 __le16 nabspf;
325 __le16 noiob;
326 __u8 nvmcap[16];
327 __u8 rsvd64[28];
328 __le32 anagrpid;
329 __u8 rsvd96[3];
330 __u8 nsattr;
331 __u8 rsvd100[4];
332 __u8 nguid[16];
333 __u8 eui64[8];
334 struct nvme_lbaf lbaf[16];
335 __u8 rsvd192[192];
336 __u8 vs[3712];
337};
338
339enum {
340 NVME_ID_CNS_NS = 0x00,
341 NVME_ID_CNS_CTRL = 0x01,
342 NVME_ID_CNS_NS_ACTIVE_LIST = 0x02,
343 NVME_ID_CNS_NS_DESC_LIST = 0x03,
344 NVME_ID_CNS_NS_PRESENT_LIST = 0x10,
345 NVME_ID_CNS_NS_PRESENT = 0x11,
346 NVME_ID_CNS_CTRL_NS_LIST = 0x12,
347 NVME_ID_CNS_CTRL_LIST = 0x13,
348};
349
350enum {
351 NVME_DIR_IDENTIFY = 0x00,
352 NVME_DIR_STREAMS = 0x01,
353 NVME_DIR_SND_ID_OP_ENABLE = 0x01,
354 NVME_DIR_SND_ST_OP_REL_ID = 0x01,
355 NVME_DIR_SND_ST_OP_REL_RSC = 0x02,
356 NVME_DIR_RCV_ID_OP_PARAM = 0x01,
357 NVME_DIR_RCV_ST_OP_PARAM = 0x01,
358 NVME_DIR_RCV_ST_OP_STATUS = 0x02,
359 NVME_DIR_RCV_ST_OP_RESOURCE = 0x03,
360 NVME_DIR_ENDIR = 0x01,
361};
362
363enum {
364 NVME_NS_FEAT_THIN = 1 << 0,
365 NVME_NS_FLBAS_LBA_MASK = 0xf,
366 NVME_NS_FLBAS_META_EXT = 0x10,
367 NVME_LBAF_RP_BEST = 0,
368 NVME_LBAF_RP_BETTER = 1,
369 NVME_LBAF_RP_GOOD = 2,
370 NVME_LBAF_RP_DEGRADED = 3,
371 NVME_NS_DPC_PI_LAST = 1 << 4,
372 NVME_NS_DPC_PI_FIRST = 1 << 3,
373 NVME_NS_DPC_PI_TYPE3 = 1 << 2,
374 NVME_NS_DPC_PI_TYPE2 = 1 << 1,
375 NVME_NS_DPC_PI_TYPE1 = 1 << 0,
376 NVME_NS_DPS_PI_FIRST = 1 << 3,
377 NVME_NS_DPS_PI_MASK = 0x7,
378 NVME_NS_DPS_PI_TYPE1 = 1,
379 NVME_NS_DPS_PI_TYPE2 = 2,
380 NVME_NS_DPS_PI_TYPE3 = 3,
381};
382
383struct nvme_ns_id_desc {
384 __u8 nidt;
385 __u8 nidl;
386 __le16 reserved;
387};
388
389#define NVME_NIDT_EUI64_LEN 8
390#define NVME_NIDT_NGUID_LEN 16
391#define NVME_NIDT_UUID_LEN 16
392
393enum {
394 NVME_NIDT_EUI64 = 0x01,
395 NVME_NIDT_NGUID = 0x02,
396 NVME_NIDT_UUID = 0x03,
397};
398
399struct nvme_smart_log {
400 __u8 critical_warning;
401 __u8 temperature[2];
402 __u8 avail_spare;
403 __u8 spare_thresh;
404 __u8 percent_used;
405 __u8 rsvd6[26];
406 __u8 data_units_read[16];
407 __u8 data_units_written[16];
408 __u8 host_reads[16];
409 __u8 host_writes[16];
410 __u8 ctrl_busy_time[16];
411 __u8 power_cycles[16];
412 __u8 power_on_hours[16];
413 __u8 unsafe_shutdowns[16];
414 __u8 media_errors[16];
415 __u8 num_err_log_entries[16];
416 __le32 warning_temp_time;
417 __le32 critical_comp_time;
418 __le16 temp_sensor[8];
419 __u8 rsvd216[296];
420};
421
422struct nvme_fw_slot_info_log {
423 __u8 afi;
424 __u8 rsvd1[7];
425 __le64 frs[7];
426 __u8 rsvd64[448];
427};
428
429enum {
430 NVME_CMD_EFFECTS_CSUPP = 1 << 0,
431 NVME_CMD_EFFECTS_LBCC = 1 << 1,
432 NVME_CMD_EFFECTS_NCC = 1 << 2,
433 NVME_CMD_EFFECTS_NIC = 1 << 3,
434 NVME_CMD_EFFECTS_CCC = 1 << 4,
435 NVME_CMD_EFFECTS_CSE_MASK = 3 << 16,
436};
437
438struct nvme_effects_log {
439 __le32 acs[256];
440 __le32 iocs[256];
441 __u8 resv[2048];
442};
443
444enum nvme_ana_state {
445 NVME_ANA_OPTIMIZED = 0x01,
446 NVME_ANA_NONOPTIMIZED = 0x02,
447 NVME_ANA_INACCESSIBLE = 0x03,
448 NVME_ANA_PERSISTENT_LOSS = 0x04,
449 NVME_ANA_CHANGE = 0x0f,
450};
451
452struct nvme_ana_group_desc {
453 __le32 grpid;
454 __le32 nnsids;
455 __le64 chgcnt;
456 __u8 state;
457 __u8 rsvd17[15];
458 __le32 nsids[];
459};
460
461/* flag for the log specific field of the ANA log */
462#define NVME_ANA_LOG_RGO (1 << 0)
463
464struct nvme_ana_rsp_hdr {
465 __le64 chgcnt;
466 __le16 ngrps;
467 __le16 rsvd10[3];
468};
469
470enum {
471 NVME_SMART_CRIT_SPARE = 1 << 0,
472 NVME_SMART_CRIT_TEMPERATURE = 1 << 1,
473 NVME_SMART_CRIT_RELIABILITY = 1 << 2,
474 NVME_SMART_CRIT_MEDIA = 1 << 3,
475 NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4,
476};
477
478enum {
479 NVME_AER_ERROR = 0,
480 NVME_AER_SMART = 1,
481 NVME_AER_NOTICE = 2,
482 NVME_AER_CSS = 6,
483 NVME_AER_VS = 7,
484};
485
486enum {
487 NVME_AER_NOTICE_NS_CHANGED = 0x00,
488 NVME_AER_NOTICE_FW_ACT_STARTING = 0x01,
489 NVME_AER_NOTICE_ANA = 0x03,
490 NVME_AER_NOTICE_DISC_CHANGED = 0xf0,
491};
492
493enum {
494 NVME_AEN_BIT_NS_ATTR = 8,
495 NVME_AEN_BIT_FW_ACT = 9,
496 NVME_AEN_BIT_ANA_CHANGE = 11,
497 NVME_AEN_BIT_DISC_CHANGE = 31,
498};
499
500enum {
501 NVME_AEN_CFG_NS_ATTR = 1 << NVME_AEN_BIT_NS_ATTR,
502 NVME_AEN_CFG_FW_ACT = 1 << NVME_AEN_BIT_FW_ACT,
503 NVME_AEN_CFG_ANA_CHANGE = 1 << NVME_AEN_BIT_ANA_CHANGE,
504 NVME_AEN_CFG_DISC_CHANGE = 1 << NVME_AEN_BIT_DISC_CHANGE,
505};
506
507struct nvme_lba_range_type {
508 __u8 type;
509 __u8 attributes;
510 __u8 rsvd2[14];
511 __u64 slba;
512 __u64 nlb;
513 __u8 guid[16];
514 __u8 rsvd48[16];
515};
516
517enum {
518 NVME_LBART_TYPE_FS = 0x01,
519 NVME_LBART_TYPE_RAID = 0x02,
520 NVME_LBART_TYPE_CACHE = 0x03,
521 NVME_LBART_TYPE_SWAP = 0x04,
522
523 NVME_LBART_ATTRIB_TEMP = 1 << 0,
524 NVME_LBART_ATTRIB_HIDE = 1 << 1,
525};
526
527struct nvme_reservation_status {
528 __le32 gen;
529 __u8 rtype;
530 __u8 regctl[2];
531 __u8 resv5[2];
532 __u8 ptpls;
533 __u8 resv10[13];
534 struct {
535 __le16 cntlid;
536 __u8 rcsts;
537 __u8 resv3[5];
538 __le64 hostid;
539 __le64 rkey;
540 } regctl_ds[];
541};
542
543enum nvme_async_event_type {
544 NVME_AER_TYPE_ERROR = 0,
545 NVME_AER_TYPE_SMART = 1,
546 NVME_AER_TYPE_NOTICE = 2,
547};
548
549/* I/O commands */
550
551enum nvme_opcode {
552 nvme_cmd_flush = 0x00,
553 nvme_cmd_write = 0x01,
554 nvme_cmd_read = 0x02,
555 nvme_cmd_write_uncor = 0x04,
556 nvme_cmd_compare = 0x05,
557 nvme_cmd_write_zeroes = 0x08,
558 nvme_cmd_dsm = 0x09,
559 nvme_cmd_resv_register = 0x0d,
560 nvme_cmd_resv_report = 0x0e,
561 nvme_cmd_resv_acquire = 0x11,
562 nvme_cmd_resv_release = 0x15,
563};
564
565/*
566 * Descriptor subtype - lower 4 bits of nvme_(keyed_)sgl_desc identifier
567 *
568 * @NVME_SGL_FMT_ADDRESS: absolute address of the data block
569 * @NVME_SGL_FMT_OFFSET: relative offset of the in-capsule data block
570 * @NVME_SGL_FMT_TRANSPORT_A: transport defined format, value 0xA
571 * @NVME_SGL_FMT_INVALIDATE: RDMA transport specific remote invalidation
572 * request subtype
573 */
574enum {
575 NVME_SGL_FMT_ADDRESS = 0x00,
576 NVME_SGL_FMT_OFFSET = 0x01,
577 NVME_SGL_FMT_TRANSPORT_A = 0x0A,
578 NVME_SGL_FMT_INVALIDATE = 0x0f,
579};
580
581/*
582 * Descriptor type - upper 4 bits of nvme_(keyed_)sgl_desc identifier
583 *
584 * For struct nvme_sgl_desc:
585 * @NVME_SGL_FMT_DATA_DESC: data block descriptor
586 * @NVME_SGL_FMT_SEG_DESC: sgl segment descriptor
587 * @NVME_SGL_FMT_LAST_SEG_DESC: last sgl segment descriptor
588 *
589 * For struct nvme_keyed_sgl_desc:
590 * @NVME_KEY_SGL_FMT_DATA_DESC: keyed data block descriptor
591 *
592 * Transport-specific SGL types:
593 * @NVME_TRANSPORT_SGL_DATA_DESC: Transport SGL data dlock descriptor
594 */
595enum {
596 NVME_SGL_FMT_DATA_DESC = 0x00,
597 NVME_SGL_FMT_SEG_DESC = 0x02,
598 NVME_SGL_FMT_LAST_SEG_DESC = 0x03,
599 NVME_KEY_SGL_FMT_DATA_DESC = 0x04,
600 NVME_TRANSPORT_SGL_DATA_DESC = 0x05,
601};
602
603struct nvme_sgl_desc {
604 __le64 addr;
605 __le32 length;
606 __u8 rsvd[3];
607 __u8 type;
608};
609
610struct nvme_keyed_sgl_desc {
611 __le64 addr;
612 __u8 length[3];
613 __u8 key[4];
614 __u8 type;
615};
616
617union nvme_data_ptr {
618 struct {
619 __le64 prp1;
620 __le64 prp2;
621 };
622 struct nvme_sgl_desc sgl;
623 struct nvme_keyed_sgl_desc ksgl;
624};
625
626/*
627 * Lowest two bits of our flags field (FUSE field in the spec):
628 *
629 * @NVME_CMD_FUSE_FIRST: Fused Operation, first command
630 * @NVME_CMD_FUSE_SECOND: Fused Operation, second command
631 *
632 * Highest two bits in our flags field (PSDT field in the spec):
633 *
634 * @NVME_CMD_PSDT_SGL_METABUF: Use SGLS for this transfer,
635 * If used, MPTR contains addr of single physical buffer (byte aligned).
636 * @NVME_CMD_PSDT_SGL_METASEG: Use SGLS for this transfer,
637 * If used, MPTR contains an address of an SGL segment containing
638 * exactly 1 SGL descriptor (qword aligned).
639 */
640enum {
641 NVME_CMD_FUSE_FIRST = (1 << 0),
642 NVME_CMD_FUSE_SECOND = (1 << 1),
643
644 NVME_CMD_SGL_METABUF = (1 << 6),
645 NVME_CMD_SGL_METASEG = (1 << 7),
646 NVME_CMD_SGL_ALL = NVME_CMD_SGL_METABUF | NVME_CMD_SGL_METASEG,
647};
648
649struct nvme_common_command {
650 __u8 opcode;
651 __u8 flags;
652 __u16 command_id;
653 __le32 nsid;
654 __le32 cdw2[2];
655 __le64 metadata;
656 union nvme_data_ptr dptr;
657 __le32 cdw10;
658 __le32 cdw11;
659 __le32 cdw12;
660 __le32 cdw13;
661 __le32 cdw14;
662 __le32 cdw15;
663};
664
665struct nvme_rw_command {
666 __u8 opcode;
667 __u8 flags;
668 __u16 command_id;
669 __le32 nsid;
670 __u64 rsvd2;
671 __le64 metadata;
672 union nvme_data_ptr dptr;
673 __le64 slba;
674 __le16 length;
675 __le16 control;
676 __le32 dsmgmt;
677 __le32 reftag;
678 __le16 apptag;
679 __le16 appmask;
680};
681
682enum {
683 NVME_RW_LR = 1 << 15,
684 NVME_RW_FUA = 1 << 14,
685 NVME_RW_DSM_FREQ_UNSPEC = 0,
686 NVME_RW_DSM_FREQ_TYPICAL = 1,
687 NVME_RW_DSM_FREQ_RARE = 2,
688 NVME_RW_DSM_FREQ_READS = 3,
689 NVME_RW_DSM_FREQ_WRITES = 4,
690 NVME_RW_DSM_FREQ_RW = 5,
691 NVME_RW_DSM_FREQ_ONCE = 6,
692 NVME_RW_DSM_FREQ_PREFETCH = 7,
693 NVME_RW_DSM_FREQ_TEMP = 8,
694 NVME_RW_DSM_LATENCY_NONE = 0 << 4,
695 NVME_RW_DSM_LATENCY_IDLE = 1 << 4,
696 NVME_RW_DSM_LATENCY_NORM = 2 << 4,
697 NVME_RW_DSM_LATENCY_LOW = 3 << 4,
698 NVME_RW_DSM_SEQ_REQ = 1 << 6,
699 NVME_RW_DSM_COMPRESSED = 1 << 7,
700 NVME_RW_PRINFO_PRCHK_REF = 1 << 10,
701 NVME_RW_PRINFO_PRCHK_APP = 1 << 11,
702 NVME_RW_PRINFO_PRCHK_GUARD = 1 << 12,
703 NVME_RW_PRINFO_PRACT = 1 << 13,
704 NVME_RW_DTYPE_STREAMS = 1 << 4,
705};
706
707struct nvme_dsm_cmd {
708 __u8 opcode;
709 __u8 flags;
710 __u16 command_id;
711 __le32 nsid;
712 __u64 rsvd2[2];
713 union nvme_data_ptr dptr;
714 __le32 nr;
715 __le32 attributes;
716 __u32 rsvd12[4];
717};
718
719enum {
720 NVME_DSMGMT_IDR = 1 << 0,
721 NVME_DSMGMT_IDW = 1 << 1,
722 NVME_DSMGMT_AD = 1 << 2,
723};
724
725#define NVME_DSM_MAX_RANGES 256
726
727struct nvme_dsm_range {
728 __le32 cattr;
729 __le32 nlb;
730 __le64 slba;
731};
732
733struct nvme_write_zeroes_cmd {
734 __u8 opcode;
735 __u8 flags;
736 __u16 command_id;
737 __le32 nsid;
738 __u64 rsvd2;
739 __le64 metadata;
740 union nvme_data_ptr dptr;
741 __le64 slba;
742 __le16 length;
743 __le16 control;
744 __le32 dsmgmt;
745 __le32 reftag;
746 __le16 apptag;
747 __le16 appmask;
748};
749
750/* Features */
751
752struct nvme_feat_auto_pst {
753 __le64 entries[32];
754};
755
756enum {
757 NVME_HOST_MEM_ENABLE = (1 << 0),
758 NVME_HOST_MEM_RETURN = (1 << 1),
759};
760
761struct nvme_feat_host_behavior {
762 __u8 acre;
763 __u8 resv1[511];
764};
765
766enum {
767 NVME_ENABLE_ACRE = 1,
768};
769
770/* Admin commands */
771
772enum nvme_admin_opcode {
773 nvme_admin_delete_sq = 0x00,
774 nvme_admin_create_sq = 0x01,
775 nvme_admin_get_log_page = 0x02,
776 nvme_admin_delete_cq = 0x04,
777 nvme_admin_create_cq = 0x05,
778 nvme_admin_identify = 0x06,
779 nvme_admin_abort_cmd = 0x08,
780 nvme_admin_set_features = 0x09,
781 nvme_admin_get_features = 0x0a,
782 nvme_admin_async_event = 0x0c,
783 nvme_admin_ns_mgmt = 0x0d,
784 nvme_admin_activate_fw = 0x10,
785 nvme_admin_download_fw = 0x11,
786 nvme_admin_ns_attach = 0x15,
787 nvme_admin_keep_alive = 0x18,
788 nvme_admin_directive_send = 0x19,
789 nvme_admin_directive_recv = 0x1a,
790 nvme_admin_dbbuf = 0x7C,
791 nvme_admin_format_nvm = 0x80,
792 nvme_admin_security_send = 0x81,
793 nvme_admin_security_recv = 0x82,
794 nvme_admin_sanitize_nvm = 0x84,
795};
796
797enum {
798 NVME_QUEUE_PHYS_CONTIG = (1 << 0),
799 NVME_CQ_IRQ_ENABLED = (1 << 1),
800 NVME_SQ_PRIO_URGENT = (0 << 1),
801 NVME_SQ_PRIO_HIGH = (1 << 1),
802 NVME_SQ_PRIO_MEDIUM = (2 << 1),
803 NVME_SQ_PRIO_LOW = (3 << 1),
804 NVME_FEAT_ARBITRATION = 0x01,
805 NVME_FEAT_POWER_MGMT = 0x02,
806 NVME_FEAT_LBA_RANGE = 0x03,
807 NVME_FEAT_TEMP_THRESH = 0x04,
808 NVME_FEAT_ERR_RECOVERY = 0x05,
809 NVME_FEAT_VOLATILE_WC = 0x06,
810 NVME_FEAT_NUM_QUEUES = 0x07,
811 NVME_FEAT_IRQ_COALESCE = 0x08,
812 NVME_FEAT_IRQ_CONFIG = 0x09,
813 NVME_FEAT_WRITE_ATOMIC = 0x0a,
814 NVME_FEAT_ASYNC_EVENT = 0x0b,
815 NVME_FEAT_AUTO_PST = 0x0c,
816 NVME_FEAT_HOST_MEM_BUF = 0x0d,
817 NVME_FEAT_TIMESTAMP = 0x0e,
818 NVME_FEAT_KATO = 0x0f,
819 NVME_FEAT_HCTM = 0x10,
820 NVME_FEAT_NOPSC = 0x11,
821 NVME_FEAT_RRL = 0x12,
822 NVME_FEAT_PLM_CONFIG = 0x13,
823 NVME_FEAT_PLM_WINDOW = 0x14,
824 NVME_FEAT_HOST_BEHAVIOR = 0x16,
825 NVME_FEAT_SW_PROGRESS = 0x80,
826 NVME_FEAT_HOST_ID = 0x81,
827 NVME_FEAT_RESV_MASK = 0x82,
828 NVME_FEAT_RESV_PERSIST = 0x83,
829 NVME_FEAT_WRITE_PROTECT = 0x84,
830 NVME_LOG_ERROR = 0x01,
831 NVME_LOG_SMART = 0x02,
832 NVME_LOG_FW_SLOT = 0x03,
833 NVME_LOG_CHANGED_NS = 0x04,
834 NVME_LOG_CMD_EFFECTS = 0x05,
835 NVME_LOG_ANA = 0x0c,
836 NVME_LOG_DISC = 0x70,
837 NVME_LOG_RESERVATION = 0x80,
838 NVME_FWACT_REPL = (0 << 3),
839 NVME_FWACT_REPL_ACTV = (1 << 3),
840 NVME_FWACT_ACTV = (2 << 3),
841};
842
843/* NVMe Namespace Write Protect State */
844enum {
845 NVME_NS_NO_WRITE_PROTECT = 0,
846 NVME_NS_WRITE_PROTECT,
847 NVME_NS_WRITE_PROTECT_POWER_CYCLE,
848 NVME_NS_WRITE_PROTECT_PERMANENT,
849};
850
851#define NVME_MAX_CHANGED_NAMESPACES 1024
852
853struct nvme_identify {
854 __u8 opcode;
855 __u8 flags;
856 __u16 command_id;
857 __le32 nsid;
858 __u64 rsvd2[2];
859 union nvme_data_ptr dptr;
860 __u8 cns;
861 __u8 rsvd3;
862 __le16 ctrlid;
863 __u32 rsvd11[5];
864};
865
866#define NVME_IDENTIFY_DATA_SIZE 4096
867
868struct nvme_features {
869 __u8 opcode;
870 __u8 flags;
871 __u16 command_id;
872 __le32 nsid;
873 __u64 rsvd2[2];
874 union nvme_data_ptr dptr;
875 __le32 fid;
876 __le32 dword11;
877 __le32 dword12;
878 __le32 dword13;
879 __le32 dword14;
880 __le32 dword15;
881};
882
883struct nvme_host_mem_buf_desc {
884 __le64 addr;
885 __le32 size;
886 __u32 rsvd;
887};
888
889struct nvme_create_cq {
890 __u8 opcode;
891 __u8 flags;
892 __u16 command_id;
893 __u32 rsvd1[5];
894 __le64 prp1;
895 __u64 rsvd8;
896 __le16 cqid;
897 __le16 qsize;
898 __le16 cq_flags;
899 __le16 irq_vector;
900 __u32 rsvd12[4];
901};
902
903struct nvme_create_sq {
904 __u8 opcode;
905 __u8 flags;
906 __u16 command_id;
907 __u32 rsvd1[5];
908 __le64 prp1;
909 __u64 rsvd8;
910 __le16 sqid;
911 __le16 qsize;
912 __le16 sq_flags;
913 __le16 cqid;
914 __u32 rsvd12[4];
915};
916
917struct nvme_delete_queue {
918 __u8 opcode;
919 __u8 flags;
920 __u16 command_id;
921 __u32 rsvd1[9];
922 __le16 qid;
923 __u16 rsvd10;
924 __u32 rsvd11[5];
925};
926
927struct nvme_abort_cmd {
928 __u8 opcode;
929 __u8 flags;
930 __u16 command_id;
931 __u32 rsvd1[9];
932 __le16 sqid;
933 __u16 cid;
934 __u32 rsvd11[5];
935};
936
937struct nvme_download_firmware {
938 __u8 opcode;
939 __u8 flags;
940 __u16 command_id;
941 __u32 rsvd1[5];
942 union nvme_data_ptr dptr;
943 __le32 numd;
944 __le32 offset;
945 __u32 rsvd12[4];
946};
947
948struct nvme_format_cmd {
949 __u8 opcode;
950 __u8 flags;
951 __u16 command_id;
952 __le32 nsid;
953 __u64 rsvd2[4];
954 __le32 cdw10;
955 __u32 rsvd11[5];
956};
957
958struct nvme_get_log_page_command {
959 __u8 opcode;
960 __u8 flags;
961 __u16 command_id;
962 __le32 nsid;
963 __u64 rsvd2[2];
964 union nvme_data_ptr dptr;
965 __u8 lid;
966 __u8 lsp; /* upper 4 bits reserved */
967 __le16 numdl;
968 __le16 numdu;
969 __u16 rsvd11;
970 __le32 lpol;
971 __le32 lpou;
972 __u32 rsvd14[2];
973};
974
975struct nvme_directive_cmd {
976 __u8 opcode;
977 __u8 flags;
978 __u16 command_id;
979 __le32 nsid;
980 __u64 rsvd2[2];
981 union nvme_data_ptr dptr;
982 __le32 numd;
983 __u8 doper;
984 __u8 dtype;
985 __le16 dspec;
986 __u8 endir;
987 __u8 tdtype;
988 __u16 rsvd15;
989
990 __u32 rsvd16[3];
991};
992
993/*
994 * Fabrics subcommands.
995 */
996enum nvmf_fabrics_opcode {
997 nvme_fabrics_command = 0x7f,
998};
999
1000enum nvmf_capsule_command {
1001 nvme_fabrics_type_property_set = 0x00,
1002 nvme_fabrics_type_connect = 0x01,
1003 nvme_fabrics_type_property_get = 0x04,
1004};
1005
1006struct nvmf_common_command {
1007 __u8 opcode;
1008 __u8 resv1;
1009 __u16 command_id;
1010 __u8 fctype;
1011 __u8 resv2[35];
1012 __u8 ts[24];
1013};
1014
1015/*
1016 * The legal cntlid range a NVMe Target will provide.
1017 * Note that cntlid of value 0 is considered illegal in the fabrics world.
1018 * Devices based on earlier specs did not have the subsystem concept;
1019 * therefore, those devices had their cntlid value set to 0 as a result.
1020 */
1021#define NVME_CNTLID_MIN 1
1022#define NVME_CNTLID_MAX 0xffef
1023#define NVME_CNTLID_DYNAMIC 0xffff
1024
1025#define MAX_DISC_LOGS 255
1026
1027/* Discovery log page entry */
1028struct nvmf_disc_rsp_page_entry {
1029 __u8 trtype;
1030 __u8 adrfam;
1031 __u8 subtype;
1032 __u8 treq;
1033 __le16 portid;
1034 __le16 cntlid;
1035 __le16 asqsz;
1036 __u8 resv8[22];
1037 char trsvcid[NVMF_TRSVCID_SIZE];
1038 __u8 resv64[192];
1039 char subnqn[NVMF_NQN_FIELD_LEN];
1040 char traddr[NVMF_TRADDR_SIZE];
1041 union tsas {
1042 char common[NVMF_TSAS_SIZE];
1043 struct rdma {
1044 __u8 qptype;
1045 __u8 prtype;
1046 __u8 cms;
1047 __u8 resv3[5];
1048 __u16 pkey;
1049 __u8 resv10[246];
1050 } rdma;
1051 } tsas;
1052};
1053
1054/* Discovery log page header */
1055struct nvmf_disc_rsp_page_hdr {
1056 __le64 genctr;
1057 __le64 numrec;
1058 __le16 recfmt;
1059 __u8 resv14[1006];
1060 struct nvmf_disc_rsp_page_entry entries[0];
1061};
1062
1063enum {
1064 NVME_CONNECT_DISABLE_SQFLOW = (1 << 2),
1065};
1066
1067struct nvmf_connect_command {
1068 __u8 opcode;
1069 __u8 resv1;
1070 __u16 command_id;
1071 __u8 fctype;
1072 __u8 resv2[19];
1073 union nvme_data_ptr dptr;
1074 __le16 recfmt;
1075 __le16 qid;
1076 __le16 sqsize;
1077 __u8 cattr;
1078 __u8 resv3;
1079 __le32 kato;
1080 __u8 resv4[12];
1081};
1082
1083struct nvmf_connect_data {
1084 uuid_t hostid;
1085 __le16 cntlid;
1086 char resv4[238];
1087 char subsysnqn[NVMF_NQN_FIELD_LEN];
1088 char hostnqn[NVMF_NQN_FIELD_LEN];
1089 char resv5[256];
1090};
1091
1092struct nvmf_property_set_command {
1093 __u8 opcode;
1094 __u8 resv1;
1095 __u16 command_id;
1096 __u8 fctype;
1097 __u8 resv2[35];
1098 __u8 attrib;
1099 __u8 resv3[3];
1100 __le32 offset;
1101 __le64 value;
1102 __u8 resv4[8];
1103};
1104
1105struct nvmf_property_get_command {
1106 __u8 opcode;
1107 __u8 resv1;
1108 __u16 command_id;
1109 __u8 fctype;
1110 __u8 resv2[35];
1111 __u8 attrib;
1112 __u8 resv3[3];
1113 __le32 offset;
1114 __u8 resv4[16];
1115};
1116
1117struct nvme_dbbuf {
1118 __u8 opcode;
1119 __u8 flags;
1120 __u16 command_id;
1121 __u32 rsvd1[5];
1122 __le64 prp1;
1123 __le64 prp2;
1124 __u32 rsvd12[6];
1125};
1126
1127struct streams_directive_params {
1128 __le16 msl;
1129 __le16 nssa;
1130 __le16 nsso;
1131 __u8 rsvd[10];
1132 __le32 sws;
1133 __le16 sgs;
1134 __le16 nsa;
1135 __le16 nso;
1136 __u8 rsvd2[6];
1137};
1138
1139struct nvme_command {
1140 union {
1141 struct nvme_common_command common;
1142 struct nvme_rw_command rw;
1143 struct nvme_identify identify;
1144 struct nvme_features features;
1145 struct nvme_create_cq create_cq;
1146 struct nvme_create_sq create_sq;
1147 struct nvme_delete_queue delete_queue;
1148 struct nvme_download_firmware dlfw;
1149 struct nvme_format_cmd format;
1150 struct nvme_dsm_cmd dsm;
1151 struct nvme_write_zeroes_cmd write_zeroes;
1152 struct nvme_abort_cmd abort;
1153 struct nvme_get_log_page_command get_log_page;
1154 struct nvmf_common_command fabrics;
1155 struct nvmf_connect_command connect;
1156 struct nvmf_property_set_command prop_set;
1157 struct nvmf_property_get_command prop_get;
1158 struct nvme_dbbuf dbbuf;
1159 struct nvme_directive_cmd directive;
1160 };
1161};
1162
1163struct nvme_error_slot {
1164 __le64 error_count;
1165 __le16 sqid;
1166 __le16 cmdid;
1167 __le16 status_field;
1168 __le16 param_error_location;
1169 __le64 lba;
1170 __le32 nsid;
1171 __u8 vs;
1172 __u8 resv[3];
1173 __le64 cs;
1174 __u8 resv2[24];
1175};
1176
1177static inline bool nvme_is_write(struct nvme_command *cmd)
1178{
1179 /*
1180 * What a mess...
1181 *
1182 * Why can't we simply have a Fabrics In and Fabrics out command?
1183 */
1184 if (unlikely(cmd->common.opcode == nvme_fabrics_command))
1185 return cmd->fabrics.fctype & 1;
1186 return cmd->common.opcode & 1;
1187}
1188
1189enum {
1190 /*
1191 * Generic Command Status:
1192 */
1193 NVME_SC_SUCCESS = 0x0,
1194 NVME_SC_INVALID_OPCODE = 0x1,
1195 NVME_SC_INVALID_FIELD = 0x2,
1196 NVME_SC_CMDID_CONFLICT = 0x3,
1197 NVME_SC_DATA_XFER_ERROR = 0x4,
1198 NVME_SC_POWER_LOSS = 0x5,
1199 NVME_SC_INTERNAL = 0x6,
1200 NVME_SC_ABORT_REQ = 0x7,
1201 NVME_SC_ABORT_QUEUE = 0x8,
1202 NVME_SC_FUSED_FAIL = 0x9,
1203 NVME_SC_FUSED_MISSING = 0xa,
1204 NVME_SC_INVALID_NS = 0xb,
1205 NVME_SC_CMD_SEQ_ERROR = 0xc,
1206 NVME_SC_SGL_INVALID_LAST = 0xd,
1207 NVME_SC_SGL_INVALID_COUNT = 0xe,
1208 NVME_SC_SGL_INVALID_DATA = 0xf,
1209 NVME_SC_SGL_INVALID_METADATA = 0x10,
1210 NVME_SC_SGL_INVALID_TYPE = 0x11,
1211
1212 NVME_SC_SGL_INVALID_OFFSET = 0x16,
1213 NVME_SC_SGL_INVALID_SUBTYPE = 0x17,
1214
1215 NVME_SC_NS_WRITE_PROTECTED = 0x20,
1216
1217 NVME_SC_LBA_RANGE = 0x80,
1218 NVME_SC_CAP_EXCEEDED = 0x81,
1219 NVME_SC_NS_NOT_READY = 0x82,
1220 NVME_SC_RESERVATION_CONFLICT = 0x83,
1221
1222 /*
1223 * Command Specific Status:
1224 */
1225 NVME_SC_CQ_INVALID = 0x100,
1226 NVME_SC_QID_INVALID = 0x101,
1227 NVME_SC_QUEUE_SIZE = 0x102,
1228 NVME_SC_ABORT_LIMIT = 0x103,
1229 NVME_SC_ABORT_MISSING = 0x104,
1230 NVME_SC_ASYNC_LIMIT = 0x105,
1231 NVME_SC_FIRMWARE_SLOT = 0x106,
1232 NVME_SC_FIRMWARE_IMAGE = 0x107,
1233 NVME_SC_INVALID_VECTOR = 0x108,
1234 NVME_SC_INVALID_LOG_PAGE = 0x109,
1235 NVME_SC_INVALID_FORMAT = 0x10a,
1236 NVME_SC_FW_NEEDS_CONV_RESET = 0x10b,
1237 NVME_SC_INVALID_QUEUE = 0x10c,
1238 NVME_SC_FEATURE_NOT_SAVEABLE = 0x10d,
1239 NVME_SC_FEATURE_NOT_CHANGEABLE = 0x10e,
1240 NVME_SC_FEATURE_NOT_PER_NS = 0x10f,
1241 NVME_SC_FW_NEEDS_SUBSYS_RESET = 0x110,
1242 NVME_SC_FW_NEEDS_RESET = 0x111,
1243 NVME_SC_FW_NEEDS_MAX_TIME = 0x112,
1244 NVME_SC_FW_ACIVATE_PROHIBITED = 0x113,
1245 NVME_SC_OVERLAPPING_RANGE = 0x114,
1246 NVME_SC_NS_INSUFFICENT_CAP = 0x115,
1247 NVME_SC_NS_ID_UNAVAILABLE = 0x116,
1248 NVME_SC_NS_ALREADY_ATTACHED = 0x118,
1249 NVME_SC_NS_IS_PRIVATE = 0x119,
1250 NVME_SC_NS_NOT_ATTACHED = 0x11a,
1251 NVME_SC_THIN_PROV_NOT_SUPP = 0x11b,
1252 NVME_SC_CTRL_LIST_INVALID = 0x11c,
1253
1254 /*
1255 * I/O Command Set Specific - NVM commands:
1256 */
1257 NVME_SC_BAD_ATTRIBUTES = 0x180,
1258 NVME_SC_INVALID_PI = 0x181,
1259 NVME_SC_READ_ONLY = 0x182,
1260 NVME_SC_ONCS_NOT_SUPPORTED = 0x183,
1261
1262 /*
1263 * I/O Command Set Specific - Fabrics commands:
1264 */
1265 NVME_SC_CONNECT_FORMAT = 0x180,
1266 NVME_SC_CONNECT_CTRL_BUSY = 0x181,
1267 NVME_SC_CONNECT_INVALID_PARAM = 0x182,
1268 NVME_SC_CONNECT_RESTART_DISC = 0x183,
1269 NVME_SC_CONNECT_INVALID_HOST = 0x184,
1270
1271 NVME_SC_DISCOVERY_RESTART = 0x190,
1272 NVME_SC_AUTH_REQUIRED = 0x191,
1273
1274 /*
1275 * Media and Data Integrity Errors:
1276 */
1277 NVME_SC_WRITE_FAULT = 0x280,
1278 NVME_SC_READ_ERROR = 0x281,
1279 NVME_SC_GUARD_CHECK = 0x282,
1280 NVME_SC_APPTAG_CHECK = 0x283,
1281 NVME_SC_REFTAG_CHECK = 0x284,
1282 NVME_SC_COMPARE_FAILED = 0x285,
1283 NVME_SC_ACCESS_DENIED = 0x286,
1284 NVME_SC_UNWRITTEN_BLOCK = 0x287,
1285
1286 /*
1287 * Path-related Errors:
1288 */
1289 NVME_SC_ANA_PERSISTENT_LOSS = 0x301,
1290 NVME_SC_ANA_INACCESSIBLE = 0x302,
1291 NVME_SC_ANA_TRANSITION = 0x303,
1292 NVME_SC_HOST_PATH_ERROR = 0x370,
1293
1294 NVME_SC_CRD = 0x1800,
1295 NVME_SC_DNR = 0x4000,
1296};
1297
1298struct nvme_completion {
1299 /*
1300 * Used by Admin and Fabrics commands to return data:
1301 */
1302 union nvme_result {
1303 __le16 u16;
1304 __le32 u32;
1305 __le64 u64;
1306 } result;
1307 __le16 sq_head; /* how much of this queue may be reclaimed */
1308 __le16 sq_id; /* submission queue that generated this entry */
1309 __u16 command_id; /* of the command which completed */
1310 __le16 status; /* did the command fail, and if so, why? */
1311};
1312
1313#define NVME_VS(major, minor, tertiary) \
1314 (((major) << 16) | ((minor) << 8) | (tertiary))
1315
1316#define NVME_MAJOR(ver) ((ver) >> 16)
1317#define NVME_MINOR(ver) (((ver) >> 8) & 0xff)
1318#define NVME_TERTIARY(ver) ((ver) & 0xff)
1319
1320#endif /* _LINUX_NVME_H */
1321