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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-18 15:34:09 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-18 15:34:09 -0500
commit92b5abbb44e05cdbc4483219f30a435dd871a8ea (patch)
tree15490d1c7fd415575ec6beec1baa5ce89f747bf9 /include/linux
parentccb19d263fd1c9e34948e2158c53eacbff369344 (diff)
parentdf3481399042200792822b6243e36a95a557b57e (diff)
Merge git://git.infradead.org/users/willy/linux-nvme
* git://git.infradead.org/users/willy/linux-nvme: (105 commits) NVMe: Set number of queues correctly NVMe: Version 0.8 NVMe: Set queue flags correctly NVMe: Simplify nvme_unmap_user_pages NVMe: Mark the end of the sg list NVMe: Fix DMA mapping for admin commands NVMe: Rename IO_TIMEOUT to NVME_IO_TIMEOUT NVMe: Merge the nvme_bio and nvme_prp data structures NVMe: Change nvme_completion_fn to take a dev NVMe: Change get_nvmeq to take a dev instead of a namespace NVMe: Simplify completion handling NVMe: Update Identify Controller data structure NVMe: Implement doorbell stride capability NVMe: Version 0.7 NVMe: Don't probe namespace 0 Fix calculation of number of pages in a PRP List NVMe: Create nvme_identify and nvme_get_features functions NVMe: Fix memory leak in nvme_dev_add() NVMe: Fix calls to dma_unmap_sg NVMe: Correct sg list setup in nvme_map_user_pages ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/nvme.h434
1 files changed, 434 insertions, 0 deletions
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
new file mode 100644
index 000000000000..9490a00529f4
--- /dev/null
+++ b/include/linux/nvme.h
@@ -0,0 +1,434 @@
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
24struct nvme_bar {
25 __u64 cap; /* Controller Capabilities */
26 __u32 vs; /* Version */
27 __u32 intms; /* Interrupt Mask Set */
28 __u32 intmc; /* Interrupt Mask Clear */
29 __u32 cc; /* Controller Configuration */
30 __u32 rsvd1; /* Reserved */
31 __u32 csts; /* Controller Status */
32 __u32 rsvd2; /* Reserved */
33 __u32 aqa; /* Admin Queue Attributes */
34 __u64 asq; /* Admin SQ Base Address */
35 __u64 acq; /* Admin CQ Base Address */
36};
37
38#define NVME_CAP_TIMEOUT(cap) (((cap) >> 24) & 0xff)
39#define NVME_CAP_STRIDE(cap) (((cap) >> 32) & 0xf)
40
41enum {
42 NVME_CC_ENABLE = 1 << 0,
43 NVME_CC_CSS_NVM = 0 << 4,
44 NVME_CC_MPS_SHIFT = 7,
45 NVME_CC_ARB_RR = 0 << 11,
46 NVME_CC_ARB_WRRU = 1 << 11,
47 NVME_CC_ARB_VS = 7 << 11,
48 NVME_CC_SHN_NONE = 0 << 14,
49 NVME_CC_SHN_NORMAL = 1 << 14,
50 NVME_CC_SHN_ABRUPT = 2 << 14,
51 NVME_CC_IOSQES = 6 << 16,
52 NVME_CC_IOCQES = 4 << 20,
53 NVME_CSTS_RDY = 1 << 0,
54 NVME_CSTS_CFS = 1 << 1,
55 NVME_CSTS_SHST_NORMAL = 0 << 2,
56 NVME_CSTS_SHST_OCCUR = 1 << 2,
57 NVME_CSTS_SHST_CMPLT = 2 << 2,
58};
59
60struct nvme_id_power_state {
61 __le16 max_power; /* centiwatts */
62 __u16 rsvd2;
63 __le32 entry_lat; /* microseconds */
64 __le32 exit_lat; /* microseconds */
65 __u8 read_tput;
66 __u8 read_lat;
67 __u8 write_tput;
68 __u8 write_lat;
69 __u8 rsvd16[16];
70};
71
72#define NVME_VS(major, minor) (major << 16 | minor)
73
74struct nvme_id_ctrl {
75 __le16 vid;
76 __le16 ssvid;
77 char sn[20];
78 char mn[40];
79 char fr[8];
80 __u8 rab;
81 __u8 ieee[3];
82 __u8 mic;
83 __u8 mdts;
84 __u8 rsvd78[178];
85 __le16 oacs;
86 __u8 acl;
87 __u8 aerl;
88 __u8 frmw;
89 __u8 lpa;
90 __u8 elpe;
91 __u8 npss;
92 __u8 rsvd264[248];
93 __u8 sqes;
94 __u8 cqes;
95 __u8 rsvd514[2];
96 __le32 nn;
97 __le16 oncs;
98 __le16 fuses;
99 __u8 fna;
100 __u8 vwc;
101 __le16 awun;
102 __le16 awupf;
103 __u8 rsvd530[1518];
104 struct nvme_id_power_state psd[32];
105 __u8 vs[1024];
106};
107
108struct nvme_lbaf {
109 __le16 ms;
110 __u8 ds;
111 __u8 rp;
112};
113
114struct nvme_id_ns {
115 __le64 nsze;
116 __le64 ncap;
117 __le64 nuse;
118 __u8 nsfeat;
119 __u8 nlbaf;
120 __u8 flbas;
121 __u8 mc;
122 __u8 dpc;
123 __u8 dps;
124 __u8 rsvd30[98];
125 struct nvme_lbaf lbaf[16];
126 __u8 rsvd192[192];
127 __u8 vs[3712];
128};
129
130enum {
131 NVME_NS_FEAT_THIN = 1 << 0,
132 NVME_LBAF_RP_BEST = 0,
133 NVME_LBAF_RP_BETTER = 1,
134 NVME_LBAF_RP_GOOD = 2,
135 NVME_LBAF_RP_DEGRADED = 3,
136};
137
138struct nvme_lba_range_type {
139 __u8 type;
140 __u8 attributes;
141 __u8 rsvd2[14];
142 __u64 slba;
143 __u64 nlb;
144 __u8 guid[16];
145 __u8 rsvd48[16];
146};
147
148enum {
149 NVME_LBART_TYPE_FS = 0x01,
150 NVME_LBART_TYPE_RAID = 0x02,
151 NVME_LBART_TYPE_CACHE = 0x03,
152 NVME_LBART_TYPE_SWAP = 0x04,
153
154 NVME_LBART_ATTRIB_TEMP = 1 << 0,
155 NVME_LBART_ATTRIB_HIDE = 1 << 1,
156};
157
158/* I/O commands */
159
160enum nvme_opcode {
161 nvme_cmd_flush = 0x00,
162 nvme_cmd_write = 0x01,
163 nvme_cmd_read = 0x02,
164 nvme_cmd_write_uncor = 0x04,
165 nvme_cmd_compare = 0x05,
166 nvme_cmd_dsm = 0x09,
167};
168
169struct nvme_common_command {
170 __u8 opcode;
171 __u8 flags;
172 __u16 command_id;
173 __le32 nsid;
174 __u32 cdw2[2];
175 __le64 metadata;
176 __le64 prp1;
177 __le64 prp2;
178 __u32 cdw10[6];
179};
180
181struct nvme_rw_command {
182 __u8 opcode;
183 __u8 flags;
184 __u16 command_id;
185 __le32 nsid;
186 __u64 rsvd2;
187 __le64 metadata;
188 __le64 prp1;
189 __le64 prp2;
190 __le64 slba;
191 __le16 length;
192 __le16 control;
193 __le32 dsmgmt;
194 __le32 reftag;
195 __le16 apptag;
196 __le16 appmask;
197};
198
199enum {
200 NVME_RW_LR = 1 << 15,
201 NVME_RW_FUA = 1 << 14,
202 NVME_RW_DSM_FREQ_UNSPEC = 0,
203 NVME_RW_DSM_FREQ_TYPICAL = 1,
204 NVME_RW_DSM_FREQ_RARE = 2,
205 NVME_RW_DSM_FREQ_READS = 3,
206 NVME_RW_DSM_FREQ_WRITES = 4,
207 NVME_RW_DSM_FREQ_RW = 5,
208 NVME_RW_DSM_FREQ_ONCE = 6,
209 NVME_RW_DSM_FREQ_PREFETCH = 7,
210 NVME_RW_DSM_FREQ_TEMP = 8,
211 NVME_RW_DSM_LATENCY_NONE = 0 << 4,
212 NVME_RW_DSM_LATENCY_IDLE = 1 << 4,
213 NVME_RW_DSM_LATENCY_NORM = 2 << 4,
214 NVME_RW_DSM_LATENCY_LOW = 3 << 4,
215 NVME_RW_DSM_SEQ_REQ = 1 << 6,
216 NVME_RW_DSM_COMPRESSED = 1 << 7,
217};
218
219/* Admin commands */
220
221enum nvme_admin_opcode {
222 nvme_admin_delete_sq = 0x00,
223 nvme_admin_create_sq = 0x01,
224 nvme_admin_get_log_page = 0x02,
225 nvme_admin_delete_cq = 0x04,
226 nvme_admin_create_cq = 0x05,
227 nvme_admin_identify = 0x06,
228 nvme_admin_abort_cmd = 0x08,
229 nvme_admin_set_features = 0x09,
230 nvme_admin_get_features = 0x0a,
231 nvme_admin_async_event = 0x0c,
232 nvme_admin_activate_fw = 0x10,
233 nvme_admin_download_fw = 0x11,
234 nvme_admin_format_nvm = 0x80,
235 nvme_admin_security_send = 0x81,
236 nvme_admin_security_recv = 0x82,
237};
238
239enum {
240 NVME_QUEUE_PHYS_CONTIG = (1 << 0),
241 NVME_CQ_IRQ_ENABLED = (1 << 1),
242 NVME_SQ_PRIO_URGENT = (0 << 1),
243 NVME_SQ_PRIO_HIGH = (1 << 1),
244 NVME_SQ_PRIO_MEDIUM = (2 << 1),
245 NVME_SQ_PRIO_LOW = (3 << 1),
246 NVME_FEAT_ARBITRATION = 0x01,
247 NVME_FEAT_POWER_MGMT = 0x02,
248 NVME_FEAT_LBA_RANGE = 0x03,
249 NVME_FEAT_TEMP_THRESH = 0x04,
250 NVME_FEAT_ERR_RECOVERY = 0x05,
251 NVME_FEAT_VOLATILE_WC = 0x06,
252 NVME_FEAT_NUM_QUEUES = 0x07,
253 NVME_FEAT_IRQ_COALESCE = 0x08,
254 NVME_FEAT_IRQ_CONFIG = 0x09,
255 NVME_FEAT_WRITE_ATOMIC = 0x0a,
256 NVME_FEAT_ASYNC_EVENT = 0x0b,
257 NVME_FEAT_SW_PROGRESS = 0x0c,
258};
259
260struct nvme_identify {
261 __u8 opcode;
262 __u8 flags;
263 __u16 command_id;
264 __le32 nsid;
265 __u64 rsvd2[2];
266 __le64 prp1;
267 __le64 prp2;
268 __le32 cns;
269 __u32 rsvd11[5];
270};
271
272struct nvme_features {
273 __u8 opcode;
274 __u8 flags;
275 __u16 command_id;
276 __le32 nsid;
277 __u64 rsvd2[2];
278 __le64 prp1;
279 __le64 prp2;
280 __le32 fid;
281 __le32 dword11;
282 __u32 rsvd12[4];
283};
284
285struct nvme_create_cq {
286 __u8 opcode;
287 __u8 flags;
288 __u16 command_id;
289 __u32 rsvd1[5];
290 __le64 prp1;
291 __u64 rsvd8;
292 __le16 cqid;
293 __le16 qsize;
294 __le16 cq_flags;
295 __le16 irq_vector;
296 __u32 rsvd12[4];
297};
298
299struct nvme_create_sq {
300 __u8 opcode;
301 __u8 flags;
302 __u16 command_id;
303 __u32 rsvd1[5];
304 __le64 prp1;
305 __u64 rsvd8;
306 __le16 sqid;
307 __le16 qsize;
308 __le16 sq_flags;
309 __le16 cqid;
310 __u32 rsvd12[4];
311};
312
313struct nvme_delete_queue {
314 __u8 opcode;
315 __u8 flags;
316 __u16 command_id;
317 __u32 rsvd1[9];
318 __le16 qid;
319 __u16 rsvd10;
320 __u32 rsvd11[5];
321};
322
323struct nvme_download_firmware {
324 __u8 opcode;
325 __u8 flags;
326 __u16 command_id;
327 __u32 rsvd1[5];
328 __le64 prp1;
329 __le64 prp2;
330 __le32 numd;
331 __le32 offset;
332 __u32 rsvd12[4];
333};
334
335struct nvme_command {
336 union {
337 struct nvme_common_command common;
338 struct nvme_rw_command rw;
339 struct nvme_identify identify;
340 struct nvme_features features;
341 struct nvme_create_cq create_cq;
342 struct nvme_create_sq create_sq;
343 struct nvme_delete_queue delete_queue;
344 struct nvme_download_firmware dlfw;
345 };
346};
347
348enum {
349 NVME_SC_SUCCESS = 0x0,
350 NVME_SC_INVALID_OPCODE = 0x1,
351 NVME_SC_INVALID_FIELD = 0x2,
352 NVME_SC_CMDID_CONFLICT = 0x3,
353 NVME_SC_DATA_XFER_ERROR = 0x4,
354 NVME_SC_POWER_LOSS = 0x5,
355 NVME_SC_INTERNAL = 0x6,
356 NVME_SC_ABORT_REQ = 0x7,
357 NVME_SC_ABORT_QUEUE = 0x8,
358 NVME_SC_FUSED_FAIL = 0x9,
359 NVME_SC_FUSED_MISSING = 0xa,
360 NVME_SC_INVALID_NS = 0xb,
361 NVME_SC_LBA_RANGE = 0x80,
362 NVME_SC_CAP_EXCEEDED = 0x81,
363 NVME_SC_NS_NOT_READY = 0x82,
364 NVME_SC_CQ_INVALID = 0x100,
365 NVME_SC_QID_INVALID = 0x101,
366 NVME_SC_QUEUE_SIZE = 0x102,
367 NVME_SC_ABORT_LIMIT = 0x103,
368 NVME_SC_ABORT_MISSING = 0x104,
369 NVME_SC_ASYNC_LIMIT = 0x105,
370 NVME_SC_FIRMWARE_SLOT = 0x106,
371 NVME_SC_FIRMWARE_IMAGE = 0x107,
372 NVME_SC_INVALID_VECTOR = 0x108,
373 NVME_SC_INVALID_LOG_PAGE = 0x109,
374 NVME_SC_INVALID_FORMAT = 0x10a,
375 NVME_SC_BAD_ATTRIBUTES = 0x180,
376 NVME_SC_WRITE_FAULT = 0x280,
377 NVME_SC_READ_ERROR = 0x281,
378 NVME_SC_GUARD_CHECK = 0x282,
379 NVME_SC_APPTAG_CHECK = 0x283,
380 NVME_SC_REFTAG_CHECK = 0x284,
381 NVME_SC_COMPARE_FAILED = 0x285,
382 NVME_SC_ACCESS_DENIED = 0x286,
383};
384
385struct nvme_completion {
386 __le32 result; /* Used by admin commands to return data */
387 __u32 rsvd;
388 __le16 sq_head; /* how much of this queue may be reclaimed */
389 __le16 sq_id; /* submission queue that generated this entry */
390 __u16 command_id; /* of the command which completed */
391 __le16 status; /* did the command fail, and if so, why? */
392};
393
394struct nvme_user_io {
395 __u8 opcode;
396 __u8 flags;
397 __u16 control;
398 __u16 nblocks;
399 __u16 rsvd;
400 __u64 metadata;
401 __u64 addr;
402 __u64 slba;
403 __u32 dsmgmt;
404 __u32 reftag;
405 __u16 apptag;
406 __u16 appmask;
407};
408
409struct nvme_admin_cmd {
410 __u8 opcode;
411 __u8 flags;
412 __u16 rsvd1;
413 __u32 nsid;
414 __u32 cdw2;
415 __u32 cdw3;
416 __u64 metadata;
417 __u64 addr;
418 __u32 metadata_len;
419 __u32 data_len;
420 __u32 cdw10;
421 __u32 cdw11;
422 __u32 cdw12;
423 __u32 cdw13;
424 __u32 cdw14;
425 __u32 cdw15;
426 __u32 timeout_ms;
427 __u32 result;
428};
429
430#define NVME_IOCTL_ID _IO('N', 0x40)
431#define NVME_IOCTL_ADMIN_CMD _IOWR('N', 0x41, struct nvme_admin_cmd)
432#define NVME_IOCTL_SUBMIT_IO _IOW('N', 0x42, struct nvme_user_io)
433
434#endif /* _LINUX_NVME_H */
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-21 11:28:14 -0500