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b60503ba MW |
1 | /* |
2 | * Definitions for the NVM Express interface | |
3 | * Copyright (c) 2011, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #ifndef _LINUX_NVME_H | |
20 | #define _LINUX_NVME_H | |
21 | ||
22 | #include <linux/types.h> | |
23 | ||
24 | struct nvme_bar { | |
25 | __u64 cap; /* Controller Capabilities */ | |
26 | __u32 vs; /* Version */ | |
897cfe1c MW |
27 | __u32 intms; /* Interrupt Mask Set */ |
28 | __u32 intmc; /* Interrupt Mask Clear */ | |
b60503ba | 29 | __u32 cc; /* Controller Configuration */ |
897cfe1c | 30 | __u32 rsvd1; /* Reserved */ |
b60503ba | 31 | __u32 csts; /* Controller Status */ |
897cfe1c | 32 | __u32 rsvd2; /* Reserved */ |
b60503ba MW |
33 | __u32 aqa; /* Admin Queue Attributes */ |
34 | __u64 asq; /* Admin SQ Base Address */ | |
35 | __u64 acq; /* Admin CQ Base Address */ | |
36 | }; | |
37 | ||
22605f96 | 38 | #define NVME_CAP_TIMEOUT(cap) (((cap) >> 24) & 0xff) |
f1938f6e | 39 | #define NVME_CAP_STRIDE(cap) (((cap) >> 32) & 0xf) |
8fc23e03 | 40 | #define NVME_CAP_MPSMIN(cap) (((cap) >> 48) & 0xf) |
22605f96 | 41 | |
b60503ba MW |
42 | enum { |
43 | NVME_CC_ENABLE = 1 << 0, | |
44 | NVME_CC_CSS_NVM = 0 << 4, | |
45 | NVME_CC_MPS_SHIFT = 7, | |
46 | NVME_CC_ARB_RR = 0 << 11, | |
47 | NVME_CC_ARB_WRRU = 1 << 11, | |
7f53f9d2 MW |
48 | NVME_CC_ARB_VS = 7 << 11, |
49 | NVME_CC_SHN_NONE = 0 << 14, | |
50 | NVME_CC_SHN_NORMAL = 1 << 14, | |
51 | NVME_CC_SHN_ABRUPT = 2 << 14, | |
52 | NVME_CC_IOSQES = 6 << 16, | |
53 | NVME_CC_IOCQES = 4 << 20, | |
b60503ba MW |
54 | NVME_CSTS_RDY = 1 << 0, |
55 | NVME_CSTS_CFS = 1 << 1, | |
56 | NVME_CSTS_SHST_NORMAL = 0 << 2, | |
57 | NVME_CSTS_SHST_OCCUR = 1 << 2, | |
58 | NVME_CSTS_SHST_CMPLT = 2 << 2, | |
59 | }; | |
60 | ||
010e646b MW |
61 | struct nvme_id_power_state { |
62 | __le16 max_power; /* centiwatts */ | |
63 | __u16 rsvd2; | |
64 | __le32 entry_lat; /* microseconds */ | |
65 | __le32 exit_lat; /* microseconds */ | |
66 | __u8 read_tput; | |
67 | __u8 read_lat; | |
68 | __u8 write_tput; | |
69 | __u8 write_lat; | |
70 | __u8 rsvd16[16]; | |
71 | }; | |
72 | ||
b60503ba MW |
73 | #define NVME_VS(major, minor) (major << 16 | minor) |
74 | ||
75 | struct nvme_id_ctrl { | |
76 | __le16 vid; | |
77 | __le16 ssvid; | |
78 | char sn[20]; | |
79 | char mn[40]; | |
80 | char fr[8]; | |
b60503ba | 81 | __u8 rab; |
010e646b MW |
82 | __u8 ieee[3]; |
83 | __u8 mic; | |
84 | __u8 mdts; | |
85 | __u8 rsvd78[178]; | |
b60503ba MW |
86 | __le16 oacs; |
87 | __u8 acl; | |
88 | __u8 aerl; | |
89 | __u8 frmw; | |
90 | __u8 lpa; | |
91 | __u8 elpe; | |
92 | __u8 npss; | |
93 | __u8 rsvd264[248]; | |
010e646b MW |
94 | __u8 sqes; |
95 | __u8 cqes; | |
96 | __u8 rsvd514[2]; | |
97 | __le32 nn; | |
b60503ba MW |
98 | __le16 oncs; |
99 | __le16 fuses; | |
100 | __u8 fna; | |
101 | __u8 vwc; | |
102 | __le16 awun; | |
103 | __le16 awupf; | |
010e646b MW |
104 | __u8 rsvd530[1518]; |
105 | struct nvme_id_power_state psd[32]; | |
b60503ba MW |
106 | __u8 vs[1024]; |
107 | }; | |
108 | ||
109 | struct nvme_lbaf { | |
110 | __le16 ms; | |
111 | __u8 ds; | |
112 | __u8 rp; | |
113 | }; | |
114 | ||
115 | struct nvme_id_ns { | |
116 | __le64 nsze; | |
117 | __le64 ncap; | |
118 | __le64 nuse; | |
119 | __u8 nsfeat; | |
120 | __u8 nlbaf; | |
121 | __u8 flbas; | |
122 | __u8 mc; | |
123 | __u8 dpc; | |
124 | __u8 dps; | |
125 | __u8 rsvd30[98]; | |
126 | struct nvme_lbaf lbaf[16]; | |
127 | __u8 rsvd192[192]; | |
128 | __u8 vs[3712]; | |
129 | }; | |
130 | ||
131 | enum { | |
132 | NVME_NS_FEAT_THIN = 1 << 0, | |
133 | NVME_LBAF_RP_BEST = 0, | |
134 | NVME_LBAF_RP_BETTER = 1, | |
135 | NVME_LBAF_RP_GOOD = 2, | |
136 | NVME_LBAF_RP_DEGRADED = 3, | |
137 | }; | |
138 | ||
139 | struct nvme_lba_range_type { | |
140 | __u8 type; | |
141 | __u8 attributes; | |
142 | __u8 rsvd2[14]; | |
143 | __u64 slba; | |
144 | __u64 nlb; | |
145 | __u8 guid[16]; | |
146 | __u8 rsvd48[16]; | |
147 | }; | |
148 | ||
149 | enum { | |
150 | NVME_LBART_TYPE_FS = 0x01, | |
151 | NVME_LBART_TYPE_RAID = 0x02, | |
152 | NVME_LBART_TYPE_CACHE = 0x03, | |
153 | NVME_LBART_TYPE_SWAP = 0x04, | |
154 | ||
155 | NVME_LBART_ATTRIB_TEMP = 1 << 0, | |
156 | NVME_LBART_ATTRIB_HIDE = 1 << 1, | |
157 | }; | |
158 | ||
159 | /* I/O commands */ | |
160 | ||
161 | enum nvme_opcode { | |
162 | nvme_cmd_flush = 0x00, | |
163 | nvme_cmd_write = 0x01, | |
164 | nvme_cmd_read = 0x02, | |
165 | nvme_cmd_write_uncor = 0x04, | |
166 | nvme_cmd_compare = 0x05, | |
167 | nvme_cmd_dsm = 0x09, | |
168 | }; | |
169 | ||
7b4fe9b1 MW |
170 | struct nvme_common_command { |
171 | __u8 opcode; | |
172 | __u8 flags; | |
173 | __u16 command_id; | |
174 | __le32 nsid; | |
6bbf1acd | 175 | __u32 cdw2[2]; |
7b4fe9b1 MW |
176 | __le64 metadata; |
177 | __le64 prp1; | |
178 | __le64 prp2; | |
6bbf1acd | 179 | __u32 cdw10[6]; |
7b4fe9b1 MW |
180 | }; |
181 | ||
b60503ba MW |
182 | struct nvme_rw_command { |
183 | __u8 opcode; | |
184 | __u8 flags; | |
185 | __u16 command_id; | |
186 | __le32 nsid; | |
187 | __u64 rsvd2; | |
188 | __le64 metadata; | |
189 | __le64 prp1; | |
190 | __le64 prp2; | |
191 | __le64 slba; | |
192 | __le16 length; | |
193 | __le16 control; | |
194 | __le32 dsmgmt; | |
195 | __le32 reftag; | |
196 | __le16 apptag; | |
197 | __le16 appmask; | |
198 | }; | |
199 | ||
200 | enum { | |
201 | NVME_RW_LR = 1 << 15, | |
202 | NVME_RW_FUA = 1 << 14, | |
203 | NVME_RW_DSM_FREQ_UNSPEC = 0, | |
204 | NVME_RW_DSM_FREQ_TYPICAL = 1, | |
205 | NVME_RW_DSM_FREQ_RARE = 2, | |
206 | NVME_RW_DSM_FREQ_READS = 3, | |
207 | NVME_RW_DSM_FREQ_WRITES = 4, | |
208 | NVME_RW_DSM_FREQ_RW = 5, | |
209 | NVME_RW_DSM_FREQ_ONCE = 6, | |
210 | NVME_RW_DSM_FREQ_PREFETCH = 7, | |
211 | NVME_RW_DSM_FREQ_TEMP = 8, | |
212 | NVME_RW_DSM_LATENCY_NONE = 0 << 4, | |
213 | NVME_RW_DSM_LATENCY_IDLE = 1 << 4, | |
214 | NVME_RW_DSM_LATENCY_NORM = 2 << 4, | |
215 | NVME_RW_DSM_LATENCY_LOW = 3 << 4, | |
216 | NVME_RW_DSM_SEQ_REQ = 1 << 6, | |
217 | NVME_RW_DSM_COMPRESSED = 1 << 7, | |
218 | }; | |
219 | ||
220 | /* Admin commands */ | |
221 | ||
222 | enum nvme_admin_opcode { | |
223 | nvme_admin_delete_sq = 0x00, | |
224 | nvme_admin_create_sq = 0x01, | |
2ddc4f74 | 225 | nvme_admin_get_log_page = 0x02, |
b60503ba MW |
226 | nvme_admin_delete_cq = 0x04, |
227 | nvme_admin_create_cq = 0x05, | |
228 | nvme_admin_identify = 0x06, | |
229 | nvme_admin_abort_cmd = 0x08, | |
230 | nvme_admin_set_features = 0x09, | |
2ddc4f74 | 231 | nvme_admin_get_features = 0x0a, |
b60503ba | 232 | nvme_admin_async_event = 0x0c, |
2ddc4f74 KW |
233 | nvme_admin_activate_fw = 0x10, |
234 | nvme_admin_download_fw = 0x11, | |
235 | nvme_admin_format_nvm = 0x80, | |
236 | nvme_admin_security_send = 0x81, | |
237 | nvme_admin_security_recv = 0x82, | |
b60503ba MW |
238 | }; |
239 | ||
240 | enum { | |
241 | NVME_QUEUE_PHYS_CONTIG = (1 << 0), | |
242 | NVME_CQ_IRQ_ENABLED = (1 << 1), | |
243 | NVME_SQ_PRIO_URGENT = (0 << 1), | |
244 | NVME_SQ_PRIO_HIGH = (1 << 1), | |
245 | NVME_SQ_PRIO_MEDIUM = (2 << 1), | |
246 | NVME_SQ_PRIO_LOW = (3 << 1), | |
247 | NVME_FEAT_ARBITRATION = 0x01, | |
248 | NVME_FEAT_POWER_MGMT = 0x02, | |
249 | NVME_FEAT_LBA_RANGE = 0x03, | |
250 | NVME_FEAT_TEMP_THRESH = 0x04, | |
251 | NVME_FEAT_ERR_RECOVERY = 0x05, | |
252 | NVME_FEAT_VOLATILE_WC = 0x06, | |
253 | NVME_FEAT_NUM_QUEUES = 0x07, | |
254 | NVME_FEAT_IRQ_COALESCE = 0x08, | |
255 | NVME_FEAT_IRQ_CONFIG = 0x09, | |
256 | NVME_FEAT_WRITE_ATOMIC = 0x0a, | |
257 | NVME_FEAT_ASYNC_EVENT = 0x0b, | |
258 | NVME_FEAT_SW_PROGRESS = 0x0c, | |
259 | }; | |
260 | ||
261 | struct nvme_identify { | |
262 | __u8 opcode; | |
263 | __u8 flags; | |
264 | __u16 command_id; | |
265 | __le32 nsid; | |
266 | __u64 rsvd2[2]; | |
267 | __le64 prp1; | |
268 | __le64 prp2; | |
269 | __le32 cns; | |
270 | __u32 rsvd11[5]; | |
271 | }; | |
272 | ||
273 | struct nvme_features { | |
274 | __u8 opcode; | |
275 | __u8 flags; | |
276 | __u16 command_id; | |
277 | __le32 nsid; | |
278 | __u64 rsvd2[2]; | |
279 | __le64 prp1; | |
280 | __le64 prp2; | |
281 | __le32 fid; | |
282 | __le32 dword11; | |
283 | __u32 rsvd12[4]; | |
284 | }; | |
285 | ||
286 | struct nvme_create_cq { | |
287 | __u8 opcode; | |
288 | __u8 flags; | |
289 | __u16 command_id; | |
6ee44cdc | 290 | __u32 rsvd1[5]; |
b60503ba MW |
291 | __le64 prp1; |
292 | __u64 rsvd8; | |
293 | __le16 cqid; | |
294 | __le16 qsize; | |
295 | __le16 cq_flags; | |
296 | __le16 irq_vector; | |
297 | __u32 rsvd12[4]; | |
298 | }; | |
299 | ||
300 | struct nvme_create_sq { | |
301 | __u8 opcode; | |
302 | __u8 flags; | |
303 | __u16 command_id; | |
6ee44cdc | 304 | __u32 rsvd1[5]; |
b60503ba MW |
305 | __le64 prp1; |
306 | __u64 rsvd8; | |
307 | __le16 sqid; | |
308 | __le16 qsize; | |
309 | __le16 sq_flags; | |
310 | __le16 cqid; | |
6ee44cdc | 311 | __u32 rsvd12[4]; |
b60503ba MW |
312 | }; |
313 | ||
314 | struct nvme_delete_queue { | |
315 | __u8 opcode; | |
316 | __u8 flags; | |
317 | __u16 command_id; | |
318 | __u32 rsvd1[9]; | |
319 | __le16 qid; | |
6ee44cdc MW |
320 | __u16 rsvd10; |
321 | __u32 rsvd11[5]; | |
322 | }; | |
323 | ||
324 | struct nvme_download_firmware { | |
325 | __u8 opcode; | |
326 | __u8 flags; | |
327 | __u16 command_id; | |
328 | __u32 rsvd1[5]; | |
329 | __le64 prp1; | |
330 | __le64 prp2; | |
331 | __le32 numd; | |
332 | __le32 offset; | |
333 | __u32 rsvd12[4]; | |
b60503ba MW |
334 | }; |
335 | ||
b60503ba MW |
336 | struct nvme_command { |
337 | union { | |
338 | struct nvme_common_command common; | |
339 | struct nvme_rw_command rw; | |
340 | struct nvme_identify identify; | |
341 | struct nvme_features features; | |
342 | struct nvme_create_cq create_cq; | |
343 | struct nvme_create_sq create_sq; | |
344 | struct nvme_delete_queue delete_queue; | |
6ee44cdc | 345 | struct nvme_download_firmware dlfw; |
b60503ba MW |
346 | }; |
347 | }; | |
348 | ||
b60503ba MW |
349 | enum { |
350 | NVME_SC_SUCCESS = 0x0, | |
351 | NVME_SC_INVALID_OPCODE = 0x1, | |
352 | NVME_SC_INVALID_FIELD = 0x2, | |
353 | NVME_SC_CMDID_CONFLICT = 0x3, | |
354 | NVME_SC_DATA_XFER_ERROR = 0x4, | |
355 | NVME_SC_POWER_LOSS = 0x5, | |
356 | NVME_SC_INTERNAL = 0x6, | |
357 | NVME_SC_ABORT_REQ = 0x7, | |
358 | NVME_SC_ABORT_QUEUE = 0x8, | |
359 | NVME_SC_FUSED_FAIL = 0x9, | |
360 | NVME_SC_FUSED_MISSING = 0xa, | |
7a63e07b | 361 | NVME_SC_INVALID_NS = 0xb, |
b60503ba MW |
362 | NVME_SC_LBA_RANGE = 0x80, |
363 | NVME_SC_CAP_EXCEEDED = 0x81, | |
364 | NVME_SC_NS_NOT_READY = 0x82, | |
365 | NVME_SC_CQ_INVALID = 0x100, | |
366 | NVME_SC_QID_INVALID = 0x101, | |
367 | NVME_SC_QUEUE_SIZE = 0x102, | |
7a63e07b MW |
368 | NVME_SC_ABORT_LIMIT = 0x103, |
369 | NVME_SC_ABORT_MISSING = 0x104, | |
370 | NVME_SC_ASYNC_LIMIT = 0x105, | |
371 | NVME_SC_FIRMWARE_SLOT = 0x106, | |
372 | NVME_SC_FIRMWARE_IMAGE = 0x107, | |
373 | NVME_SC_INVALID_VECTOR = 0x108, | |
374 | NVME_SC_INVALID_LOG_PAGE = 0x109, | |
375 | NVME_SC_INVALID_FORMAT = 0x10a, | |
376 | NVME_SC_BAD_ATTRIBUTES = 0x180, | |
b60503ba MW |
377 | NVME_SC_WRITE_FAULT = 0x280, |
378 | NVME_SC_READ_ERROR = 0x281, | |
7a63e07b MW |
379 | NVME_SC_GUARD_CHECK = 0x282, |
380 | NVME_SC_APPTAG_CHECK = 0x283, | |
381 | NVME_SC_REFTAG_CHECK = 0x284, | |
382 | NVME_SC_COMPARE_FAILED = 0x285, | |
383 | NVME_SC_ACCESS_DENIED = 0x286, | |
b60503ba MW |
384 | }; |
385 | ||
386 | struct nvme_completion { | |
387 | __le32 result; /* Used by admin commands to return data */ | |
6ee44cdc | 388 | __u32 rsvd; |
b60503ba MW |
389 | __le16 sq_head; /* how much of this queue may be reclaimed */ |
390 | __le16 sq_id; /* submission queue that generated this entry */ | |
391 | __u16 command_id; /* of the command which completed */ | |
392 | __le16 status; /* did the command fail, and if so, why? */ | |
393 | }; | |
394 | ||
a53295b6 MW |
395 | struct nvme_user_io { |
396 | __u8 opcode; | |
397 | __u8 flags; | |
398 | __u16 control; | |
6c7d4945 MW |
399 | __u16 nblocks; |
400 | __u16 rsvd; | |
a53295b6 MW |
401 | __u64 metadata; |
402 | __u64 addr; | |
403 | __u64 slba; | |
a53295b6 MW |
404 | __u32 dsmgmt; |
405 | __u32 reftag; | |
406 | __u16 apptag; | |
407 | __u16 appmask; | |
a53295b6 MW |
408 | }; |
409 | ||
6bbf1acd MW |
410 | struct nvme_admin_cmd { |
411 | __u8 opcode; | |
412 | __u8 flags; | |
413 | __u16 rsvd1; | |
414 | __u32 nsid; | |
415 | __u32 cdw2; | |
416 | __u32 cdw3; | |
417 | __u64 metadata; | |
6ee44cdc | 418 | __u64 addr; |
6bbf1acd MW |
419 | __u32 metadata_len; |
420 | __u32 data_len; | |
421 | __u32 cdw10; | |
422 | __u32 cdw11; | |
423 | __u32 cdw12; | |
424 | __u32 cdw13; | |
425 | __u32 cdw14; | |
426 | __u32 cdw15; | |
427 | __u32 timeout_ms; | |
428 | __u32 result; | |
6ee44cdc MW |
429 | }; |
430 | ||
6bbf1acd MW |
431 | #define NVME_IOCTL_ID _IO('N', 0x40) |
432 | #define NVME_IOCTL_ADMIN_CMD _IOWR('N', 0x41, struct nvme_admin_cmd) | |
433 | #define NVME_IOCTL_SUBMIT_IO _IOW('N', 0x42, struct nvme_user_io) | |
b60503ba MW |
434 | |
435 | #endif /* _LINUX_NVME_H */ |