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-rw-r--r--include/linux/nvme.h624
1 files changed, 517 insertions, 107 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index b5812c395351..3af5f454c04a 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -15,10 +15,7 @@
15#ifndef _LINUX_NVME_H 15#ifndef _LINUX_NVME_H
16#define _LINUX_NVME_H 16#define _LINUX_NVME_H
17 17
18#include <uapi/linux/nvme.h> 18#include <linux/types.h>
19#include <linux/pci.h>
20#include <linux/kref.h>
21#include <linux/blk-mq.h>
22 19
23struct nvme_bar { 20struct nvme_bar {
24 __u64 cap; /* Controller Capabilities */ 21 __u64 cap; /* Controller Capabilities */
@@ -76,115 +73,528 @@ enum {
76 NVME_CSTS_SHST_MASK = 3 << 2, 73 NVME_CSTS_SHST_MASK = 3 << 2,
77}; 74};
78 75
79extern unsigned char nvme_io_timeout; 76struct nvme_id_power_state {
80#define NVME_IO_TIMEOUT (nvme_io_timeout * HZ) 77 __le16 max_power; /* centiwatts */
78 __u8 rsvd2;
79 __u8 flags;
80 __le32 entry_lat; /* microseconds */
81 __le32 exit_lat; /* microseconds */
82 __u8 read_tput;
83 __u8 read_lat;
84 __u8 write_tput;
85 __u8 write_lat;
86 __le16 idle_power;
87 __u8 idle_scale;
88 __u8 rsvd19;
89 __le16 active_power;
90 __u8 active_work_scale;
91 __u8 rsvd23[9];
92};
81 93
82/* 94enum {
83 * Represents an NVM Express device. Each nvme_dev is a PCI function. 95 NVME_PS_FLAGS_MAX_POWER_SCALE = 1 << 0,
84 */ 96 NVME_PS_FLAGS_NON_OP_STATE = 1 << 1,
85struct nvme_dev {
86 struct list_head node;
87 struct nvme_queue **queues;
88 struct request_queue *admin_q;
89 struct blk_mq_tag_set tagset;
90 struct blk_mq_tag_set admin_tagset;
91 u32 __iomem *dbs;
92 struct device *dev;
93 struct dma_pool *prp_page_pool;
94 struct dma_pool *prp_small_pool;
95 int instance;
96 unsigned queue_count;
97 unsigned online_queues;
98 unsigned max_qid;
99 int q_depth;
100 u32 db_stride;
101 u32 ctrl_config;
102 struct msix_entry *entry;
103 struct nvme_bar __iomem *bar;
104 struct list_head namespaces;
105 struct kref kref;
106 struct device *device;
107 work_func_t reset_workfn;
108 struct work_struct reset_work;
109 struct work_struct probe_work;
110 struct work_struct scan_work;
111 char name[12];
112 char serial[20];
113 char model[40];
114 char firmware_rev[8];
115 bool subsystem;
116 u32 max_hw_sectors;
117 u32 stripe_size;
118 u32 page_size;
119 void __iomem *cmb;
120 dma_addr_t cmb_dma_addr;
121 u64 cmb_size;
122 u32 cmbsz;
123 u16 oncs;
124 u16 abort_limit;
125 u8 event_limit;
126 u8 vwc;
127}; 97};
128 98
129/* 99struct nvme_id_ctrl {
130 * An NVM Express namespace is equivalent to a SCSI LUN 100 __le16 vid;
131 */ 101 __le16 ssvid;
132struct nvme_ns { 102 char sn[20];
133 struct list_head list; 103 char mn[40];
104 char fr[8];
105 __u8 rab;
106 __u8 ieee[3];
107 __u8 mic;
108 __u8 mdts;
109 __le16 cntlid;
110 __le32 ver;
111 __u8 rsvd84[172];
112 __le16 oacs;
113 __u8 acl;
114 __u8 aerl;
115 __u8 frmw;
116 __u8 lpa;
117 __u8 elpe;
118 __u8 npss;
119 __u8 avscc;
120 __u8 apsta;
121 __le16 wctemp;
122 __le16 cctemp;
123 __u8 rsvd270[242];
124 __u8 sqes;
125 __u8 cqes;
126 __u8 rsvd514[2];
127 __le32 nn;
128 __le16 oncs;
129 __le16 fuses;
130 __u8 fna;
131 __u8 vwc;
132 __le16 awun;
133 __le16 awupf;
134 __u8 nvscc;
135 __u8 rsvd531;
136 __le16 acwu;
137 __u8 rsvd534[2];
138 __le32 sgls;
139 __u8 rsvd540[1508];
140 struct nvme_id_power_state psd[32];
141 __u8 vs[1024];
142};
134 143
135 struct nvme_dev *dev; 144enum {
136 struct request_queue *queue; 145 NVME_CTRL_ONCS_COMPARE = 1 << 0,
137 struct gendisk *disk; 146 NVME_CTRL_ONCS_WRITE_UNCORRECTABLE = 1 << 1,
147 NVME_CTRL_ONCS_DSM = 1 << 2,
148 NVME_CTRL_VWC_PRESENT = 1 << 0,
149};
138 150
139 unsigned ns_id; 151struct nvme_lbaf {
140 int lba_shift; 152 __le16 ms;
141 u16 ms; 153 __u8 ds;
142 bool ext; 154 __u8 rp;
143 u8 pi_type;
144 u64 mode_select_num_blocks;
145 u32 mode_select_block_len;
146}; 155};
147 156
148/* 157struct nvme_id_ns {
149 * The nvme_iod describes the data in an I/O, including the list of PRP 158 __le64 nsze;
150 * entries. You can't see it in this data structure because C doesn't let 159 __le64 ncap;
151 * me express that. Use nvme_alloc_iod to ensure there's enough space 160 __le64 nuse;
152 * allocated to store the PRP list. 161 __u8 nsfeat;
153 */ 162 __u8 nlbaf;
154struct nvme_iod { 163 __u8 flbas;
155 unsigned long private; /* For the use of the submitter of the I/O */ 164 __u8 mc;
156 int npages; /* In the PRP list. 0 means small pool in use */ 165 __u8 dpc;
157 int offset; /* Of PRP list */ 166 __u8 dps;
158 int nents; /* Used in scatterlist */ 167 __u8 nmic;
159 int length; /* Of data, in bytes */ 168 __u8 rescap;
160 dma_addr_t first_dma; 169 __u8 fpi;
161 struct scatterlist meta_sg[1]; /* metadata requires single contiguous buffer */ 170 __u8 rsvd33;
162 struct scatterlist sg[0]; 171 __le16 nawun;
163}; 172 __le16 nawupf;
164 173 __le16 nacwu;
165static inline u64 nvme_block_nr(struct nvme_ns *ns, sector_t sector) 174 __le16 nabsn;
166{ 175 __le16 nabo;
167 return (sector >> (ns->lba_shift - 9)); 176 __le16 nabspf;
168} 177 __u16 rsvd46;
169 178 __le64 nvmcap[2];
170int nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, 179 __u8 rsvd64[40];
171 void *buf, unsigned bufflen); 180 __u8 nguid[16];
172int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd, 181 __u8 eui64[8];
173 void *buffer, void __user *ubuffer, unsigned bufflen, 182 struct nvme_lbaf lbaf[16];
174 u32 *result, unsigned timeout); 183 __u8 rsvd192[192];
175int nvme_identify_ctrl(struct nvme_dev *dev, struct nvme_id_ctrl **id); 184 __u8 vs[3712];
176int nvme_identify_ns(struct nvme_dev *dev, unsigned nsid, 185};
177 struct nvme_id_ns **id); 186
178int nvme_get_log_page(struct nvme_dev *dev, struct nvme_smart_log **log); 187enum {
179int nvme_get_features(struct nvme_dev *dev, unsigned fid, unsigned nsid, 188 NVME_NS_FEAT_THIN = 1 << 0,
180 dma_addr_t dma_addr, u32 *result); 189 NVME_NS_FLBAS_LBA_MASK = 0xf,
181int nvme_set_features(struct nvme_dev *dev, unsigned fid, unsigned dword11, 190 NVME_NS_FLBAS_META_EXT = 0x10,
182 dma_addr_t dma_addr, u32 *result); 191 NVME_LBAF_RP_BEST = 0,
183 192 NVME_LBAF_RP_BETTER = 1,
184struct sg_io_hdr; 193 NVME_LBAF_RP_GOOD = 2,
185 194 NVME_LBAF_RP_DEGRADED = 3,
186int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr); 195 NVME_NS_DPC_PI_LAST = 1 << 4,
187int nvme_sg_io32(struct nvme_ns *ns, unsigned long arg); 196 NVME_NS_DPC_PI_FIRST = 1 << 3,
188int nvme_sg_get_version_num(int __user *ip); 197 NVME_NS_DPC_PI_TYPE3 = 1 << 2,
198 NVME_NS_DPC_PI_TYPE2 = 1 << 1,
199 NVME_NS_DPC_PI_TYPE1 = 1 << 0,
200 NVME_NS_DPS_PI_FIRST = 1 << 3,
201 NVME_NS_DPS_PI_MASK = 0x7,
202 NVME_NS_DPS_PI_TYPE1 = 1,
203 NVME_NS_DPS_PI_TYPE2 = 2,
204 NVME_NS_DPS_PI_TYPE3 = 3,
205};
206
207struct nvme_smart_log {
208 __u8 critical_warning;
209 __u8 temperature[2];
210 __u8 avail_spare;
211 __u8 spare_thresh;
212 __u8 percent_used;
213 __u8 rsvd6[26];
214 __u8 data_units_read[16];
215 __u8 data_units_written[16];
216 __u8 host_reads[16];
217 __u8 host_writes[16];
218 __u8 ctrl_busy_time[16];
219 __u8 power_cycles[16];
220 __u8 power_on_hours[16];
221 __u8 unsafe_shutdowns[16];
222 __u8 media_errors[16];
223 __u8 num_err_log_entries[16];
224 __le32 warning_temp_time;
225 __le32 critical_comp_time;
226 __le16 temp_sensor[8];
227 __u8 rsvd216[296];
228};
229
230enum {
231 NVME_SMART_CRIT_SPARE = 1 << 0,
232 NVME_SMART_CRIT_TEMPERATURE = 1 << 1,
233 NVME_SMART_CRIT_RELIABILITY = 1 << 2,
234 NVME_SMART_CRIT_MEDIA = 1 << 3,
235 NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4,
236};
237
238enum {
239 NVME_AER_NOTICE_NS_CHANGED = 0x0002,
240};
241
242struct nvme_lba_range_type {
243 __u8 type;
244 __u8 attributes;
245 __u8 rsvd2[14];
246 __u64 slba;
247 __u64 nlb;
248 __u8 guid[16];
249 __u8 rsvd48[16];
250};
251
252enum {
253 NVME_LBART_TYPE_FS = 0x01,
254 NVME_LBART_TYPE_RAID = 0x02,
255 NVME_LBART_TYPE_CACHE = 0x03,
256 NVME_LBART_TYPE_SWAP = 0x04,
257
258 NVME_LBART_ATTRIB_TEMP = 1 << 0,
259 NVME_LBART_ATTRIB_HIDE = 1 << 1,
260};
261
262struct nvme_reservation_status {
263 __le32 gen;
264 __u8 rtype;
265 __u8 regctl[2];
266 __u8 resv5[2];
267 __u8 ptpls;
268 __u8 resv10[13];
269 struct {
270 __le16 cntlid;
271 __u8 rcsts;
272 __u8 resv3[5];
273 __le64 hostid;
274 __le64 rkey;
275 } regctl_ds[];
276};
277
278/* I/O commands */
279
280enum nvme_opcode {
281 nvme_cmd_flush = 0x00,
282 nvme_cmd_write = 0x01,
283 nvme_cmd_read = 0x02,
284 nvme_cmd_write_uncor = 0x04,
285 nvme_cmd_compare = 0x05,
286 nvme_cmd_write_zeroes = 0x08,
287 nvme_cmd_dsm = 0x09,
288 nvme_cmd_resv_register = 0x0d,
289 nvme_cmd_resv_report = 0x0e,
290 nvme_cmd_resv_acquire = 0x11,
291 nvme_cmd_resv_release = 0x15,
292};
293
294struct nvme_common_command {
295 __u8 opcode;
296 __u8 flags;
297 __u16 command_id;
298 __le32 nsid;
299 __le32 cdw2[2];
300 __le64 metadata;
301 __le64 prp1;
302 __le64 prp2;
303 __le32 cdw10[6];
304};
305
306struct nvme_rw_command {
307 __u8 opcode;
308 __u8 flags;
309 __u16 command_id;
310 __le32 nsid;
311 __u64 rsvd2;
312 __le64 metadata;
313 __le64 prp1;
314 __le64 prp2;
315 __le64 slba;
316 __le16 length;
317 __le16 control;
318 __le32 dsmgmt;
319 __le32 reftag;
320 __le16 apptag;
321 __le16 appmask;
322};
323
324enum {
325 NVME_RW_LR = 1 << 15,
326 NVME_RW_FUA = 1 << 14,
327 NVME_RW_DSM_FREQ_UNSPEC = 0,
328 NVME_RW_DSM_FREQ_TYPICAL = 1,
329 NVME_RW_DSM_FREQ_RARE = 2,
330 NVME_RW_DSM_FREQ_READS = 3,
331 NVME_RW_DSM_FREQ_WRITES = 4,
332 NVME_RW_DSM_FREQ_RW = 5,
333 NVME_RW_DSM_FREQ_ONCE = 6,
334 NVME_RW_DSM_FREQ_PREFETCH = 7,
335 NVME_RW_DSM_FREQ_TEMP = 8,
336 NVME_RW_DSM_LATENCY_NONE = 0 << 4,
337 NVME_RW_DSM_LATENCY_IDLE = 1 << 4,
338 NVME_RW_DSM_LATENCY_NORM = 2 << 4,
339 NVME_RW_DSM_LATENCY_LOW = 3 << 4,
340 NVME_RW_DSM_SEQ_REQ = 1 << 6,
341 NVME_RW_DSM_COMPRESSED = 1 << 7,
342 NVME_RW_PRINFO_PRCHK_REF = 1 << 10,
343 NVME_RW_PRINFO_PRCHK_APP = 1 << 11,
344 NVME_RW_PRINFO_PRCHK_GUARD = 1 << 12,
345 NVME_RW_PRINFO_PRACT = 1 << 13,
346};
347
348struct nvme_dsm_cmd {
349 __u8 opcode;
350 __u8 flags;
351 __u16 command_id;
352 __le32 nsid;
353 __u64 rsvd2[2];
354 __le64 prp1;
355 __le64 prp2;
356 __le32 nr;
357 __le32 attributes;
358 __u32 rsvd12[4];
359};
360
361enum {
362 NVME_DSMGMT_IDR = 1 << 0,
363 NVME_DSMGMT_IDW = 1 << 1,
364 NVME_DSMGMT_AD = 1 << 2,
365};
366
367struct nvme_dsm_range {
368 __le32 cattr;
369 __le32 nlb;
370 __le64 slba;
371};
372
373/* Admin commands */
374
375enum nvme_admin_opcode {
376 nvme_admin_delete_sq = 0x00,
377 nvme_admin_create_sq = 0x01,
378 nvme_admin_get_log_page = 0x02,
379 nvme_admin_delete_cq = 0x04,
380 nvme_admin_create_cq = 0x05,
381 nvme_admin_identify = 0x06,
382 nvme_admin_abort_cmd = 0x08,
383 nvme_admin_set_features = 0x09,
384 nvme_admin_get_features = 0x0a,
385 nvme_admin_async_event = 0x0c,
386 nvme_admin_activate_fw = 0x10,
387 nvme_admin_download_fw = 0x11,
388 nvme_admin_format_nvm = 0x80,
389 nvme_admin_security_send = 0x81,
390 nvme_admin_security_recv = 0x82,
391};
392
393enum {
394 NVME_QUEUE_PHYS_CONTIG = (1 << 0),
395 NVME_CQ_IRQ_ENABLED = (1 << 1),
396 NVME_SQ_PRIO_URGENT = (0 << 1),
397 NVME_SQ_PRIO_HIGH = (1 << 1),
398 NVME_SQ_PRIO_MEDIUM = (2 << 1),
399 NVME_SQ_PRIO_LOW = (3 << 1),
400 NVME_FEAT_ARBITRATION = 0x01,
401 NVME_FEAT_POWER_MGMT = 0x02,
402 NVME_FEAT_LBA_RANGE = 0x03,
403 NVME_FEAT_TEMP_THRESH = 0x04,
404 NVME_FEAT_ERR_RECOVERY = 0x05,
405 NVME_FEAT_VOLATILE_WC = 0x06,
406 NVME_FEAT_NUM_QUEUES = 0x07,
407 NVME_FEAT_IRQ_COALESCE = 0x08,
408 NVME_FEAT_IRQ_CONFIG = 0x09,
409 NVME_FEAT_WRITE_ATOMIC = 0x0a,
410 NVME_FEAT_ASYNC_EVENT = 0x0b,
411 NVME_FEAT_AUTO_PST = 0x0c,
412 NVME_FEAT_SW_PROGRESS = 0x80,
413 NVME_FEAT_HOST_ID = 0x81,
414 NVME_FEAT_RESV_MASK = 0x82,
415 NVME_FEAT_RESV_PERSIST = 0x83,
416 NVME_LOG_ERROR = 0x01,
417 NVME_LOG_SMART = 0x02,
418 NVME_LOG_FW_SLOT = 0x03,
419 NVME_LOG_RESERVATION = 0x80,
420 NVME_FWACT_REPL = (0 << 3),
421 NVME_FWACT_REPL_ACTV = (1 << 3),
422 NVME_FWACT_ACTV = (2 << 3),
423};
424
425struct nvme_identify {
426 __u8 opcode;
427 __u8 flags;
428 __u16 command_id;
429 __le32 nsid;
430 __u64 rsvd2[2];
431 __le64 prp1;
432 __le64 prp2;
433 __le32 cns;
434 __u32 rsvd11[5];
435};
436
437struct nvme_features {
438 __u8 opcode;
439 __u8 flags;
440 __u16 command_id;
441 __le32 nsid;
442 __u64 rsvd2[2];
443 __le64 prp1;
444 __le64 prp2;
445 __le32 fid;
446 __le32 dword11;
447 __u32 rsvd12[4];
448};
449
450struct nvme_create_cq {
451 __u8 opcode;
452 __u8 flags;
453 __u16 command_id;
454 __u32 rsvd1[5];
455 __le64 prp1;
456 __u64 rsvd8;
457 __le16 cqid;
458 __le16 qsize;
459 __le16 cq_flags;
460 __le16 irq_vector;
461 __u32 rsvd12[4];
462};
463
464struct nvme_create_sq {
465 __u8 opcode;
466 __u8 flags;
467 __u16 command_id;
468 __u32 rsvd1[5];
469 __le64 prp1;
470 __u64 rsvd8;
471 __le16 sqid;
472 __le16 qsize;
473 __le16 sq_flags;
474 __le16 cqid;
475 __u32 rsvd12[4];
476};
477
478struct nvme_delete_queue {
479 __u8 opcode;
480 __u8 flags;
481 __u16 command_id;
482 __u32 rsvd1[9];
483 __le16 qid;
484 __u16 rsvd10;
485 __u32 rsvd11[5];
486};
487
488struct nvme_abort_cmd {
489 __u8 opcode;
490 __u8 flags;
491 __u16 command_id;
492 __u32 rsvd1[9];
493 __le16 sqid;
494 __u16 cid;
495 __u32 rsvd11[5];
496};
497
498struct nvme_download_firmware {
499 __u8 opcode;
500 __u8 flags;
501 __u16 command_id;
502 __u32 rsvd1[5];
503 __le64 prp1;
504 __le64 prp2;
505 __le32 numd;
506 __le32 offset;
507 __u32 rsvd12[4];
508};
509
510struct nvme_format_cmd {
511 __u8 opcode;
512 __u8 flags;
513 __u16 command_id;
514 __le32 nsid;
515 __u64 rsvd2[4];
516 __le32 cdw10;
517 __u32 rsvd11[5];
518};
519
520struct nvme_command {
521 union {
522 struct nvme_common_command common;
523 struct nvme_rw_command rw;
524 struct nvme_identify identify;
525 struct nvme_features features;
526 struct nvme_create_cq create_cq;
527 struct nvme_create_sq create_sq;
528 struct nvme_delete_queue delete_queue;
529 struct nvme_download_firmware dlfw;
530 struct nvme_format_cmd format;
531 struct nvme_dsm_cmd dsm;
532 struct nvme_abort_cmd abort;
533 };
534};
535
536enum {
537 NVME_SC_SUCCESS = 0x0,
538 NVME_SC_INVALID_OPCODE = 0x1,
539 NVME_SC_INVALID_FIELD = 0x2,
540 NVME_SC_CMDID_CONFLICT = 0x3,
541 NVME_SC_DATA_XFER_ERROR = 0x4,
542 NVME_SC_POWER_LOSS = 0x5,
543 NVME_SC_INTERNAL = 0x6,
544 NVME_SC_ABORT_REQ = 0x7,
545 NVME_SC_ABORT_QUEUE = 0x8,
546 NVME_SC_FUSED_FAIL = 0x9,
547 NVME_SC_FUSED_MISSING = 0xa,
548 NVME_SC_INVALID_NS = 0xb,
549 NVME_SC_CMD_SEQ_ERROR = 0xc,
550 NVME_SC_SGL_INVALID_LAST = 0xd,
551 NVME_SC_SGL_INVALID_COUNT = 0xe,
552 NVME_SC_SGL_INVALID_DATA = 0xf,
553 NVME_SC_SGL_INVALID_METADATA = 0x10,
554 NVME_SC_SGL_INVALID_TYPE = 0x11,
555 NVME_SC_LBA_RANGE = 0x80,
556 NVME_SC_CAP_EXCEEDED = 0x81,
557 NVME_SC_NS_NOT_READY = 0x82,
558 NVME_SC_RESERVATION_CONFLICT = 0x83,
559 NVME_SC_CQ_INVALID = 0x100,
560 NVME_SC_QID_INVALID = 0x101,
561 NVME_SC_QUEUE_SIZE = 0x102,
562 NVME_SC_ABORT_LIMIT = 0x103,
563 NVME_SC_ABORT_MISSING = 0x104,
564 NVME_SC_ASYNC_LIMIT = 0x105,
565 NVME_SC_FIRMWARE_SLOT = 0x106,
566 NVME_SC_FIRMWARE_IMAGE = 0x107,
567 NVME_SC_INVALID_VECTOR = 0x108,
568 NVME_SC_INVALID_LOG_PAGE = 0x109,
569 NVME_SC_INVALID_FORMAT = 0x10a,
570 NVME_SC_FIRMWARE_NEEDS_RESET = 0x10b,
571 NVME_SC_INVALID_QUEUE = 0x10c,
572 NVME_SC_FEATURE_NOT_SAVEABLE = 0x10d,
573 NVME_SC_FEATURE_NOT_CHANGEABLE = 0x10e,
574 NVME_SC_FEATURE_NOT_PER_NS = 0x10f,
575 NVME_SC_FW_NEEDS_RESET_SUBSYS = 0x110,
576 NVME_SC_BAD_ATTRIBUTES = 0x180,
577 NVME_SC_INVALID_PI = 0x181,
578 NVME_SC_READ_ONLY = 0x182,
579 NVME_SC_WRITE_FAULT = 0x280,
580 NVME_SC_READ_ERROR = 0x281,
581 NVME_SC_GUARD_CHECK = 0x282,
582 NVME_SC_APPTAG_CHECK = 0x283,
583 NVME_SC_REFTAG_CHECK = 0x284,
584 NVME_SC_COMPARE_FAILED = 0x285,
585 NVME_SC_ACCESS_DENIED = 0x286,
586 NVME_SC_DNR = 0x4000,
587};
588
589struct nvme_completion {
590 __le32 result; /* Used by admin commands to return data */
591 __u32 rsvd;
592 __le16 sq_head; /* how much of this queue may be reclaimed */
593 __le16 sq_id; /* submission queue that generated this entry */
594 __u16 command_id; /* of the command which completed */
595 __le16 status; /* did the command fail, and if so, why? */
596};
597
598#define NVME_VS(major, minor) (((major) << 16) | ((minor) << 8))
189 599
190#endif /* _LINUX_NVME_H */ 600#endif /* _LINUX_NVME_H */