2 * NVM Express device driver
3 * Copyright (c) 2011-2014, Intel Corporation.
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.
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
16 * Refer to the SCSI-NVMe Translation spec for details on how
17 * each command is translated.
20 #include <linux/nvme.h>
21 #include <linux/bio.h>
22 #include <linux/bitops.h>
23 #include <linux/blkdev.h>
24 #include <linux/compat.h>
25 #include <linux/delay.h>
26 #include <linux/errno.h>
28 #include <linux/genhd.h>
29 #include <linux/idr.h>
30 #include <linux/init.h>
31 #include <linux/interrupt.h>
33 #include <linux/kdev_t.h>
34 #include <linux/kthread.h>
35 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/moduleparam.h>
39 #include <linux/pci.h>
40 #include <linux/poison.h>
41 #include <linux/sched.h>
42 #include <linux/slab.h>
43 #include <linux/types.h>
44 #include <asm/unaligned.h>
46 #include <scsi/scsi.h>
49 static int sg_version_num
= 30534; /* 2 digits for each component */
52 #define VPD_SUPPORTED_PAGES 0x00
53 #define VPD_SERIAL_NUMBER 0x80
54 #define VPD_DEVICE_IDENTIFIERS 0x83
55 #define VPD_EXTENDED_INQUIRY 0x86
56 #define VPD_BLOCK_LIMITS 0xB0
57 #define VPD_BLOCK_DEV_CHARACTERISTICS 0xB1
59 /* format unit paramter list offsets */
60 #define FORMAT_UNIT_SHORT_PARM_LIST_LEN 4
61 #define FORMAT_UNIT_LONG_PARM_LIST_LEN 8
62 #define FORMAT_UNIT_PROT_INT_OFFSET 3
63 #define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET 0
64 #define FORMAT_UNIT_PROT_FIELD_USAGE_MASK 0x07
67 #define FIXED_SENSE_DATA 0x70
68 #define DESC_FORMAT_SENSE_DATA 0x72
69 #define FIXED_SENSE_DATA_ADD_LENGTH 10
70 #define LUN_ENTRY_SIZE 8
71 #define LUN_DATA_HEADER_SIZE 8
72 #define ALL_LUNS_RETURNED 0x02
73 #define ALL_WELL_KNOWN_LUNS_RETURNED 0x01
74 #define RESTRICTED_LUNS_RETURNED 0x00
75 #define NVME_POWER_STATE_START_VALID 0x00
76 #define NVME_POWER_STATE_ACTIVE 0x01
77 #define NVME_POWER_STATE_IDLE 0x02
78 #define NVME_POWER_STATE_STANDBY 0x03
79 #define NVME_POWER_STATE_LU_CONTROL 0x07
80 #define POWER_STATE_0 0
81 #define POWER_STATE_1 1
82 #define POWER_STATE_2 2
83 #define POWER_STATE_3 3
84 #define DOWNLOAD_SAVE_ACTIVATE 0x05
85 #define DOWNLOAD_SAVE_DEFER_ACTIVATE 0x0E
86 #define ACTIVATE_DEFERRED_MICROCODE 0x0F
87 #define FORMAT_UNIT_IMMED_MASK 0x2
88 #define FORMAT_UNIT_IMMED_OFFSET 1
89 #define KELVIN_TEMP_FACTOR 273
90 #define FIXED_FMT_SENSE_DATA_SIZE 18
91 #define DESC_FMT_SENSE_DATA_SIZE 8
93 /* SCSI/NVMe defines and bit masks */
94 #define INQ_STANDARD_INQUIRY_PAGE 0x00
95 #define INQ_SUPPORTED_VPD_PAGES_PAGE 0x00
96 #define INQ_UNIT_SERIAL_NUMBER_PAGE 0x80
97 #define INQ_DEVICE_IDENTIFICATION_PAGE 0x83
98 #define INQ_EXTENDED_INQUIRY_DATA_PAGE 0x86
99 #define INQ_BDEV_LIMITS_PAGE 0xB0
100 #define INQ_BDEV_CHARACTERISTICS_PAGE 0xB1
101 #define INQ_SERIAL_NUMBER_LENGTH 0x14
102 #define INQ_NUM_SUPPORTED_VPD_PAGES 6
103 #define VERSION_SPC_4 0x06
104 #define ACA_UNSUPPORTED 0
105 #define STANDARD_INQUIRY_LENGTH 36
106 #define ADDITIONAL_STD_INQ_LENGTH 31
107 #define EXTENDED_INQUIRY_DATA_PAGE_LENGTH 0x3C
108 #define RESERVED_FIELD 0
110 /* Mode Sense/Select defines */
111 #define MODE_PAGE_INFO_EXCEP 0x1C
112 #define MODE_PAGE_CACHING 0x08
113 #define MODE_PAGE_CONTROL 0x0A
114 #define MODE_PAGE_POWER_CONDITION 0x1A
115 #define MODE_PAGE_RETURN_ALL 0x3F
116 #define MODE_PAGE_BLK_DES_LEN 0x08
117 #define MODE_PAGE_LLBAA_BLK_DES_LEN 0x10
118 #define MODE_PAGE_CACHING_LEN 0x14
119 #define MODE_PAGE_CONTROL_LEN 0x0C
120 #define MODE_PAGE_POW_CND_LEN 0x28
121 #define MODE_PAGE_INF_EXC_LEN 0x0C
122 #define MODE_PAGE_ALL_LEN 0x54
123 #define MODE_SENSE6_MPH_SIZE 4
124 #define MODE_SENSE_PAGE_CONTROL_MASK 0xC0
125 #define MODE_SENSE_PAGE_CODE_OFFSET 2
126 #define MODE_SENSE_PAGE_CODE_MASK 0x3F
127 #define MODE_SENSE_LLBAA_MASK 0x10
128 #define MODE_SENSE_LLBAA_SHIFT 4
129 #define MODE_SENSE_DBD_MASK 8
130 #define MODE_SENSE_DBD_SHIFT 3
131 #define MODE_SENSE10_MPH_SIZE 8
132 #define MODE_SELECT_CDB_PAGE_FORMAT_MASK 0x10
133 #define MODE_SELECT_CDB_SAVE_PAGES_MASK 0x1
134 #define MODE_SELECT_6_BD_OFFSET 3
135 #define MODE_SELECT_10_BD_OFFSET 6
136 #define MODE_SELECT_10_LLBAA_OFFSET 4
137 #define MODE_SELECT_10_LLBAA_MASK 1
138 #define MODE_SELECT_6_MPH_SIZE 4
139 #define MODE_SELECT_10_MPH_SIZE 8
140 #define CACHING_MODE_PAGE_WCE_MASK 0x04
141 #define MODE_SENSE_BLK_DESC_ENABLED 0
142 #define MODE_SENSE_BLK_DESC_COUNT 1
143 #define MODE_SELECT_PAGE_CODE_MASK 0x3F
144 #define SHORT_DESC_BLOCK 8
145 #define LONG_DESC_BLOCK 16
146 #define MODE_PAGE_POW_CND_LEN_FIELD 0x26
147 #define MODE_PAGE_INF_EXC_LEN_FIELD 0x0A
148 #define MODE_PAGE_CACHING_LEN_FIELD 0x12
149 #define MODE_PAGE_CONTROL_LEN_FIELD 0x0A
150 #define MODE_SENSE_PC_CURRENT_VALUES 0
152 /* Log Sense defines */
153 #define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE 0x00
154 #define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH 0x07
155 #define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE 0x2F
156 #define LOG_PAGE_TEMPERATURE_PAGE 0x0D
157 #define LOG_SENSE_CDB_SP_NOT_ENABLED 0
158 #define LOG_SENSE_CDB_PC_MASK 0xC0
159 #define LOG_SENSE_CDB_PC_SHIFT 6
160 #define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES 1
161 #define LOG_SENSE_CDB_PAGE_CODE_MASK 0x3F
162 #define REMAINING_INFO_EXCP_PAGE_LENGTH 0x8
163 #define LOG_INFO_EXCP_PAGE_LENGTH 0xC
164 #define REMAINING_TEMP_PAGE_LENGTH 0xC
165 #define LOG_TEMP_PAGE_LENGTH 0x10
166 #define LOG_TEMP_UNKNOWN 0xFF
167 #define SUPPORTED_LOG_PAGES_PAGE_LENGTH 0x3
169 /* Read Capacity defines */
170 #define READ_CAP_10_RESP_SIZE 8
171 #define READ_CAP_16_RESP_SIZE 32
173 /* NVMe Namespace and Command Defines */
174 #define BYTES_TO_DWORDS 4
175 #define NVME_MAX_FIRMWARE_SLOT 7
177 /* Report LUNs defines */
178 #define REPORT_LUNS_FIRST_LUN_OFFSET 8
180 /* SCSI ADDITIONAL SENSE Codes */
182 #define SCSI_ASC_NO_SENSE 0x00
183 #define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT 0x03
184 #define SCSI_ASC_LUN_NOT_READY 0x04
185 #define SCSI_ASC_WARNING 0x0B
186 #define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED 0x10
187 #define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED 0x10
188 #define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED 0x10
189 #define SCSI_ASC_UNRECOVERED_READ_ERROR 0x11
190 #define SCSI_ASC_MISCOMPARE_DURING_VERIFY 0x1D
191 #define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID 0x20
192 #define SCSI_ASC_ILLEGAL_COMMAND 0x20
193 #define SCSI_ASC_ILLEGAL_BLOCK 0x21
194 #define SCSI_ASC_INVALID_CDB 0x24
195 #define SCSI_ASC_INVALID_LUN 0x25
196 #define SCSI_ASC_INVALID_PARAMETER 0x26
197 #define SCSI_ASC_FORMAT_COMMAND_FAILED 0x31
198 #define SCSI_ASC_INTERNAL_TARGET_FAILURE 0x44
200 /* SCSI ADDITIONAL SENSE Code Qualifiers */
202 #define SCSI_ASCQ_CAUSE_NOT_REPORTABLE 0x00
203 #define SCSI_ASCQ_FORMAT_COMMAND_FAILED 0x01
204 #define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED 0x01
205 #define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED 0x02
206 #define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED 0x03
207 #define SCSI_ASCQ_FORMAT_IN_PROGRESS 0x04
208 #define SCSI_ASCQ_POWER_LOSS_EXPECTED 0x08
209 #define SCSI_ASCQ_INVALID_LUN_ID 0x09
211 /* copied from drivers/usb/gadget/function/storage_common.h */
212 static inline u32
get_unaligned_be24(u8
*buf
)
214 return 0xffffff & (u32
) get_unaligned_be32(buf
- 1);
217 /* Struct to gather data that needs to be extracted from a SCSI CDB.
218 Not conforming to any particular CDB variant, but compatible with all. */
220 struct nvme_trans_io_cdb
{
228 /* Internal Helper Functions */
231 /* Copy data to userspace memory */
233 static int nvme_trans_copy_to_user(struct sg_io_hdr
*hdr
, void *from
,
238 size_t remaining
= n
;
241 if (hdr
->iovec_count
> 0) {
244 for (i
= 0; i
< hdr
->iovec_count
; i
++) {
245 if (copy_from_user(&sgl
, hdr
->dxferp
+
246 i
* sizeof(struct sg_iovec
),
247 sizeof(struct sg_iovec
)))
249 xfer_len
= min(remaining
, sgl
.iov_len
);
250 if (copy_to_user(sgl
.iov_base
, index
, xfer_len
))
254 remaining
-= xfer_len
;
261 if (copy_to_user(hdr
->dxferp
, from
, n
))
266 /* Copy data from userspace memory */
268 static int nvme_trans_copy_from_user(struct sg_io_hdr
*hdr
, void *to
,
273 size_t remaining
= n
;
276 if (hdr
->iovec_count
> 0) {
279 for (i
= 0; i
< hdr
->iovec_count
; i
++) {
280 if (copy_from_user(&sgl
, hdr
->dxferp
+
281 i
* sizeof(struct sg_iovec
),
282 sizeof(struct sg_iovec
)))
284 xfer_len
= min(remaining
, sgl
.iov_len
);
285 if (copy_from_user(index
, sgl
.iov_base
, xfer_len
))
288 remaining
-= xfer_len
;
295 if (copy_from_user(to
, hdr
->dxferp
, n
))
300 /* Status/Sense Buffer Writeback */
302 static int nvme_trans_completion(struct sg_io_hdr
*hdr
, u8 status
, u8 sense_key
,
306 u8 resp
[DESC_FMT_SENSE_DATA_SIZE
];
308 if (scsi_status_is_good(status
)) {
309 hdr
->status
= SAM_STAT_GOOD
;
310 hdr
->masked_status
= GOOD
;
311 hdr
->host_status
= DID_OK
;
312 hdr
->driver_status
= DRIVER_OK
;
315 hdr
->status
= status
;
316 hdr
->masked_status
= status
>> 1;
317 hdr
->host_status
= DID_OK
;
318 hdr
->driver_status
= DRIVER_OK
;
320 memset(resp
, 0, DESC_FMT_SENSE_DATA_SIZE
);
321 resp
[0] = DESC_FORMAT_SENSE_DATA
;
326 xfer_len
= min_t(u8
, hdr
->mx_sb_len
, DESC_FMT_SENSE_DATA_SIZE
);
327 hdr
->sb_len_wr
= xfer_len
;
328 if (copy_to_user(hdr
->sbp
, resp
, xfer_len
) > 0)
336 * Take a status code from a lowlevel routine, and if it was a positive NVMe
337 * error code update the sense data based on it. In either case the passed
338 * in value is returned again, unless an -EFAULT from copy_to_user overrides
341 static int nvme_trans_status_code(struct sg_io_hdr
*hdr
, int nvme_sc
)
343 u8 status
, sense_key
, asc
, ascq
;
346 /* For non-nvme (Linux) errors, simply return the error code */
350 /* Mask DNR, More, and reserved fields */
351 switch (nvme_sc
& 0x7FF) {
352 /* Generic Command Status */
353 case NVME_SC_SUCCESS
:
354 status
= SAM_STAT_GOOD
;
355 sense_key
= NO_SENSE
;
356 asc
= SCSI_ASC_NO_SENSE
;
357 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
359 case NVME_SC_INVALID_OPCODE
:
360 status
= SAM_STAT_CHECK_CONDITION
;
361 sense_key
= ILLEGAL_REQUEST
;
362 asc
= SCSI_ASC_ILLEGAL_COMMAND
;
363 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
365 case NVME_SC_INVALID_FIELD
:
366 status
= SAM_STAT_CHECK_CONDITION
;
367 sense_key
= ILLEGAL_REQUEST
;
368 asc
= SCSI_ASC_INVALID_CDB
;
369 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
371 case NVME_SC_DATA_XFER_ERROR
:
372 status
= SAM_STAT_CHECK_CONDITION
;
373 sense_key
= MEDIUM_ERROR
;
374 asc
= SCSI_ASC_NO_SENSE
;
375 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
377 case NVME_SC_POWER_LOSS
:
378 status
= SAM_STAT_TASK_ABORTED
;
379 sense_key
= ABORTED_COMMAND
;
380 asc
= SCSI_ASC_WARNING
;
381 ascq
= SCSI_ASCQ_POWER_LOSS_EXPECTED
;
383 case NVME_SC_INTERNAL
:
384 status
= SAM_STAT_CHECK_CONDITION
;
385 sense_key
= HARDWARE_ERROR
;
386 asc
= SCSI_ASC_INTERNAL_TARGET_FAILURE
;
387 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
389 case NVME_SC_ABORT_REQ
:
390 status
= SAM_STAT_TASK_ABORTED
;
391 sense_key
= ABORTED_COMMAND
;
392 asc
= SCSI_ASC_NO_SENSE
;
393 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
395 case NVME_SC_ABORT_QUEUE
:
396 status
= SAM_STAT_TASK_ABORTED
;
397 sense_key
= ABORTED_COMMAND
;
398 asc
= SCSI_ASC_NO_SENSE
;
399 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
401 case NVME_SC_FUSED_FAIL
:
402 status
= SAM_STAT_TASK_ABORTED
;
403 sense_key
= ABORTED_COMMAND
;
404 asc
= SCSI_ASC_NO_SENSE
;
405 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
407 case NVME_SC_FUSED_MISSING
:
408 status
= SAM_STAT_TASK_ABORTED
;
409 sense_key
= ABORTED_COMMAND
;
410 asc
= SCSI_ASC_NO_SENSE
;
411 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
413 case NVME_SC_INVALID_NS
:
414 status
= SAM_STAT_CHECK_CONDITION
;
415 sense_key
= ILLEGAL_REQUEST
;
416 asc
= SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID
;
417 ascq
= SCSI_ASCQ_INVALID_LUN_ID
;
419 case NVME_SC_LBA_RANGE
:
420 status
= SAM_STAT_CHECK_CONDITION
;
421 sense_key
= ILLEGAL_REQUEST
;
422 asc
= SCSI_ASC_ILLEGAL_BLOCK
;
423 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
425 case NVME_SC_CAP_EXCEEDED
:
426 status
= SAM_STAT_CHECK_CONDITION
;
427 sense_key
= MEDIUM_ERROR
;
428 asc
= SCSI_ASC_NO_SENSE
;
429 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
431 case NVME_SC_NS_NOT_READY
:
432 status
= SAM_STAT_CHECK_CONDITION
;
433 sense_key
= NOT_READY
;
434 asc
= SCSI_ASC_LUN_NOT_READY
;
435 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
438 /* Command Specific Status */
439 case NVME_SC_INVALID_FORMAT
:
440 status
= SAM_STAT_CHECK_CONDITION
;
441 sense_key
= ILLEGAL_REQUEST
;
442 asc
= SCSI_ASC_FORMAT_COMMAND_FAILED
;
443 ascq
= SCSI_ASCQ_FORMAT_COMMAND_FAILED
;
445 case NVME_SC_BAD_ATTRIBUTES
:
446 status
= SAM_STAT_CHECK_CONDITION
;
447 sense_key
= ILLEGAL_REQUEST
;
448 asc
= SCSI_ASC_INVALID_CDB
;
449 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
453 case NVME_SC_WRITE_FAULT
:
454 status
= SAM_STAT_CHECK_CONDITION
;
455 sense_key
= MEDIUM_ERROR
;
456 asc
= SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT
;
457 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
459 case NVME_SC_READ_ERROR
:
460 status
= SAM_STAT_CHECK_CONDITION
;
461 sense_key
= MEDIUM_ERROR
;
462 asc
= SCSI_ASC_UNRECOVERED_READ_ERROR
;
463 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
465 case NVME_SC_GUARD_CHECK
:
466 status
= SAM_STAT_CHECK_CONDITION
;
467 sense_key
= MEDIUM_ERROR
;
468 asc
= SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED
;
469 ascq
= SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED
;
471 case NVME_SC_APPTAG_CHECK
:
472 status
= SAM_STAT_CHECK_CONDITION
;
473 sense_key
= MEDIUM_ERROR
;
474 asc
= SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED
;
475 ascq
= SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED
;
477 case NVME_SC_REFTAG_CHECK
:
478 status
= SAM_STAT_CHECK_CONDITION
;
479 sense_key
= MEDIUM_ERROR
;
480 asc
= SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED
;
481 ascq
= SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED
;
483 case NVME_SC_COMPARE_FAILED
:
484 status
= SAM_STAT_CHECK_CONDITION
;
485 sense_key
= MISCOMPARE
;
486 asc
= SCSI_ASC_MISCOMPARE_DURING_VERIFY
;
487 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
489 case NVME_SC_ACCESS_DENIED
:
490 status
= SAM_STAT_CHECK_CONDITION
;
491 sense_key
= ILLEGAL_REQUEST
;
492 asc
= SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID
;
493 ascq
= SCSI_ASCQ_INVALID_LUN_ID
;
496 /* Unspecified/Default */
497 case NVME_SC_CMDID_CONFLICT
:
498 case NVME_SC_CMD_SEQ_ERROR
:
499 case NVME_SC_CQ_INVALID
:
500 case NVME_SC_QID_INVALID
:
501 case NVME_SC_QUEUE_SIZE
:
502 case NVME_SC_ABORT_LIMIT
:
503 case NVME_SC_ABORT_MISSING
:
504 case NVME_SC_ASYNC_LIMIT
:
505 case NVME_SC_FIRMWARE_SLOT
:
506 case NVME_SC_FIRMWARE_IMAGE
:
507 case NVME_SC_INVALID_VECTOR
:
508 case NVME_SC_INVALID_LOG_PAGE
:
510 status
= SAM_STAT_CHECK_CONDITION
;
511 sense_key
= ILLEGAL_REQUEST
;
512 asc
= SCSI_ASC_NO_SENSE
;
513 ascq
= SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
517 res
= nvme_trans_completion(hdr
, status
, sense_key
, asc
, ascq
);
518 return res
? res
: nvme_sc
;
521 /* INQUIRY Helper Functions */
523 static int nvme_trans_standard_inquiry_page(struct nvme_ns
*ns
,
524 struct sg_io_hdr
*hdr
, u8
*inq_response
,
527 struct nvme_dev
*dev
= ns
->dev
;
530 struct nvme_id_ns
*id_ns
;
534 u8 resp_data_format
= 0x02;
536 u8 cmdque
= 0x01 << 1;
537 u8 fw_offset
= sizeof(dev
->firmware_rev
);
539 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
540 &dma_addr
, GFP_KERNEL
);
546 /* nvme ns identify - use DPS value for PROTECT field */
547 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
548 res
= nvme_trans_status_code(hdr
, nvme_sc
);
553 (id_ns
->dps
) ? (protect
= 0x01) : (protect
= 0);
555 memset(inq_response
, 0, STANDARD_INQUIRY_LENGTH
);
556 inq_response
[2] = VERSION_SPC_4
;
557 inq_response
[3] = resp_data_format
; /*normaca=0 | hisup=0 */
558 inq_response
[4] = ADDITIONAL_STD_INQ_LENGTH
;
559 inq_response
[5] = protect
; /* sccs=0 | acc=0 | tpgs=0 | pc3=0 */
560 inq_response
[7] = cmdque
; /* wbus16=0 | sync=0 | vs=0 */
561 strncpy(&inq_response
[8], "NVMe ", 8);
562 strncpy(&inq_response
[16], dev
->model
, 16);
564 while (dev
->firmware_rev
[fw_offset
- 1] == ' ' && fw_offset
> 4)
567 strncpy(&inq_response
[32], dev
->firmware_rev
+ fw_offset
, 4);
569 xfer_len
= min(alloc_len
, STANDARD_INQUIRY_LENGTH
);
570 res
= nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
573 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
578 static int nvme_trans_supported_vpd_pages(struct nvme_ns
*ns
,
579 struct sg_io_hdr
*hdr
, u8
*inq_response
,
584 memset(inq_response
, 0, STANDARD_INQUIRY_LENGTH
);
585 inq_response
[1] = INQ_SUPPORTED_VPD_PAGES_PAGE
; /* Page Code */
586 inq_response
[3] = INQ_NUM_SUPPORTED_VPD_PAGES
; /* Page Length */
587 inq_response
[4] = INQ_SUPPORTED_VPD_PAGES_PAGE
;
588 inq_response
[5] = INQ_UNIT_SERIAL_NUMBER_PAGE
;
589 inq_response
[6] = INQ_DEVICE_IDENTIFICATION_PAGE
;
590 inq_response
[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE
;
591 inq_response
[8] = INQ_BDEV_CHARACTERISTICS_PAGE
;
592 inq_response
[9] = INQ_BDEV_LIMITS_PAGE
;
594 xfer_len
= min(alloc_len
, STANDARD_INQUIRY_LENGTH
);
595 return nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
598 static int nvme_trans_unit_serial_page(struct nvme_ns
*ns
,
599 struct sg_io_hdr
*hdr
, u8
*inq_response
,
602 struct nvme_dev
*dev
= ns
->dev
;
605 memset(inq_response
, 0, STANDARD_INQUIRY_LENGTH
);
606 inq_response
[1] = INQ_UNIT_SERIAL_NUMBER_PAGE
; /* Page Code */
607 inq_response
[3] = INQ_SERIAL_NUMBER_LENGTH
; /* Page Length */
608 strncpy(&inq_response
[4], dev
->serial
, INQ_SERIAL_NUMBER_LENGTH
);
610 xfer_len
= min(alloc_len
, STANDARD_INQUIRY_LENGTH
);
611 return nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
614 static int nvme_trans_device_id_page(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
615 u8
*inq_response
, int alloc_len
)
617 struct nvme_dev
*dev
= ns
->dev
;
623 __be32 tmp_id
= cpu_to_be32(ns
->ns_id
);
625 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
626 &dma_addr
, GFP_KERNEL
);
632 memset(inq_response
, 0, alloc_len
);
633 inq_response
[1] = INQ_DEVICE_IDENTIFICATION_PAGE
; /* Page Code */
634 if (readl(&dev
->bar
->vs
) >= NVME_VS(1, 1)) {
635 struct nvme_id_ns
*id_ns
= mem
;
636 void *eui
= id_ns
->eui64
;
637 int len
= sizeof(id_ns
->eui64
);
639 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
640 res
= nvme_trans_status_code(hdr
, nvme_sc
);
644 if (readl(&dev
->bar
->vs
) >= NVME_VS(1, 2)) {
645 if (bitmap_empty(eui
, len
* 8)) {
647 len
= sizeof(id_ns
->nguid
);
650 if (bitmap_empty(eui
, len
* 8))
653 inq_response
[3] = 4 + len
; /* Page Length */
654 /* Designation Descriptor start */
655 inq_response
[4] = 0x01; /* Proto ID=0h | Code set=1h */
656 inq_response
[5] = 0x02; /* PIV=0b | Asso=00b | Designator Type=2h */
657 inq_response
[6] = 0x00; /* Rsvd */
658 inq_response
[7] = len
; /* Designator Length */
659 memcpy(&inq_response
[8], eui
, len
);
662 if (alloc_len
< 72) {
663 res
= nvme_trans_completion(hdr
,
664 SAM_STAT_CHECK_CONDITION
,
665 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
666 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
669 inq_response
[3] = 0x48; /* Page Length */
670 /* Designation Descriptor start */
671 inq_response
[4] = 0x03; /* Proto ID=0h | Code set=3h */
672 inq_response
[5] = 0x08; /* PIV=0b | Asso=00b | Designator Type=8h */
673 inq_response
[6] = 0x00; /* Rsvd */
674 inq_response
[7] = 0x44; /* Designator Length */
676 sprintf(&inq_response
[8], "%04x", to_pci_dev(dev
->dev
)->vendor
);
677 memcpy(&inq_response
[12], dev
->model
, sizeof(dev
->model
));
678 sprintf(&inq_response
[52], "%04x", tmp_id
);
679 memcpy(&inq_response
[56], dev
->serial
, sizeof(dev
->serial
));
681 xfer_len
= alloc_len
;
682 res
= nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
685 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
690 static int nvme_trans_ext_inq_page(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
696 struct nvme_dev
*dev
= ns
->dev
;
699 struct nvme_id_ctrl
*id_ctrl
;
700 struct nvme_id_ns
*id_ns
;
704 u8 spt_lut
[8] = {0, 0, 2, 1, 4, 6, 5, 7};
705 u8 grd_chk
, app_chk
, ref_chk
, protect
;
710 inq_response
= kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH
, GFP_KERNEL
);
711 if (inq_response
== NULL
) {
716 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
717 &dma_addr
, GFP_KERNEL
);
723 /* nvme ns identify */
724 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
725 res
= nvme_trans_status_code(hdr
, nvme_sc
);
730 spt
= spt_lut
[(id_ns
->dpc
) & 0x07] << 3;
731 (id_ns
->dps
) ? (protect
= 0x01) : (protect
= 0);
732 grd_chk
= protect
<< 2;
733 app_chk
= protect
<< 1;
736 /* nvme controller identify */
737 nvme_sc
= nvme_identify(dev
, 0, 1, dma_addr
);
738 res
= nvme_trans_status_code(hdr
, nvme_sc
);
743 v_sup
= id_ctrl
->vwc
;
745 memset(inq_response
, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH
);
746 inq_response
[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE
; /* Page Code */
747 inq_response
[2] = 0x00; /* Page Length MSB */
748 inq_response
[3] = 0x3C; /* Page Length LSB */
749 inq_response
[4] = microcode
| spt
| grd_chk
| app_chk
| ref_chk
;
750 inq_response
[5] = uask_sup
;
751 inq_response
[6] = v_sup
;
752 inq_response
[7] = luiclr
;
756 xfer_len
= min(alloc_len
, EXTENDED_INQUIRY_DATA_PAGE_LENGTH
);
757 res
= nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
760 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
767 static int nvme_trans_bdev_limits_page(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
768 u8
*inq_response
, int alloc_len
)
770 __be32 max_sectors
= cpu_to_be32(queue_max_hw_sectors(ns
->queue
));
771 __be32 max_discard
= cpu_to_be32(ns
->queue
->limits
.max_discard_sectors
);
772 __be32 discard_desc_count
= cpu_to_be32(0x100);
774 memset(inq_response
, 0, STANDARD_INQUIRY_LENGTH
);
775 inq_response
[1] = VPD_BLOCK_LIMITS
;
776 inq_response
[3] = 0x3c; /* Page Length */
777 memcpy(&inq_response
[8], &max_sectors
, sizeof(u32
));
778 memcpy(&inq_response
[20], &max_discard
, sizeof(u32
));
781 memcpy(&inq_response
[24], &discard_desc_count
, sizeof(u32
));
783 return nvme_trans_copy_to_user(hdr
, inq_response
, 0x3c);
786 static int nvme_trans_bdev_char_page(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
793 inq_response
= kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH
, GFP_KERNEL
);
794 if (inq_response
== NULL
) {
799 inq_response
[1] = INQ_BDEV_CHARACTERISTICS_PAGE
; /* Page Code */
800 inq_response
[2] = 0x00; /* Page Length MSB */
801 inq_response
[3] = 0x3C; /* Page Length LSB */
802 inq_response
[4] = 0x00; /* Medium Rotation Rate MSB */
803 inq_response
[5] = 0x01; /* Medium Rotation Rate LSB */
804 inq_response
[6] = 0x00; /* Form Factor */
806 xfer_len
= min(alloc_len
, EXTENDED_INQUIRY_DATA_PAGE_LENGTH
);
807 res
= nvme_trans_copy_to_user(hdr
, inq_response
, xfer_len
);
814 /* LOG SENSE Helper Functions */
816 static int nvme_trans_log_supp_pages(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
823 log_response
= kzalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH
, GFP_KERNEL
);
824 if (log_response
== NULL
) {
829 log_response
[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE
;
830 /* Subpage=0x00, Page Length MSB=0 */
831 log_response
[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH
;
832 log_response
[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE
;
833 log_response
[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE
;
834 log_response
[6] = LOG_PAGE_TEMPERATURE_PAGE
;
836 xfer_len
= min(alloc_len
, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH
);
837 res
= nvme_trans_copy_to_user(hdr
, log_response
, xfer_len
);
844 static int nvme_trans_log_info_exceptions(struct nvme_ns
*ns
,
845 struct sg_io_hdr
*hdr
, int alloc_len
)
850 struct nvme_command c
;
851 struct nvme_dev
*dev
= ns
->dev
;
852 struct nvme_smart_log
*smart_log
;
858 log_response
= kzalloc(LOG_INFO_EXCP_PAGE_LENGTH
, GFP_KERNEL
);
859 if (log_response
== NULL
) {
864 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_smart_log
),
865 &dma_addr
, GFP_KERNEL
);
871 /* Get SMART Log Page */
872 memset(&c
, 0, sizeof(c
));
873 c
.common
.opcode
= nvme_admin_get_log_page
;
874 c
.common
.nsid
= cpu_to_le32(0xFFFFFFFF);
875 c
.common
.prp1
= cpu_to_le64(dma_addr
);
876 c
.common
.cdw10
[0] = cpu_to_le32((((sizeof(struct nvme_smart_log
) /
877 BYTES_TO_DWORDS
) - 1) << 16) | NVME_LOG_SMART
);
878 res
= nvme_submit_sync_cmd(dev
->admin_q
, &c
);
879 if (res
!= NVME_SC_SUCCESS
) {
880 temp_c
= LOG_TEMP_UNKNOWN
;
883 temp_k
= (smart_log
->temperature
[1] << 8) +
884 (smart_log
->temperature
[0]);
885 temp_c
= temp_k
- KELVIN_TEMP_FACTOR
;
888 log_response
[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE
;
889 /* Subpage=0x00, Page Length MSB=0 */
890 log_response
[3] = REMAINING_INFO_EXCP_PAGE_LENGTH
;
891 /* Informational Exceptions Log Parameter 1 Start */
892 /* Parameter Code=0x0000 bytes 4,5 */
893 log_response
[6] = 0x23; /* DU=0, TSD=1, ETC=0, TMC=0, FMT_AND_LNK=11b */
894 log_response
[7] = 0x04; /* PARAMETER LENGTH */
895 /* Add sense Code and qualifier = 0x00 each */
896 /* Use Temperature from NVMe Get Log Page, convert to C from K */
897 log_response
[10] = temp_c
;
899 xfer_len
= min(alloc_len
, LOG_INFO_EXCP_PAGE_LENGTH
);
900 res
= nvme_trans_copy_to_user(hdr
, log_response
, xfer_len
);
902 dma_free_coherent(dev
->dev
, sizeof(struct nvme_smart_log
),
910 static int nvme_trans_log_temperature(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
916 struct nvme_command c
;
917 struct nvme_dev
*dev
= ns
->dev
;
918 struct nvme_smart_log
*smart_log
;
922 u8 temp_c_cur
, temp_c_thresh
;
925 log_response
= kzalloc(LOG_TEMP_PAGE_LENGTH
, GFP_KERNEL
);
926 if (log_response
== NULL
) {
931 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_smart_log
),
932 &dma_addr
, GFP_KERNEL
);
938 /* Get SMART Log Page */
939 memset(&c
, 0, sizeof(c
));
940 c
.common
.opcode
= nvme_admin_get_log_page
;
941 c
.common
.nsid
= cpu_to_le32(0xFFFFFFFF);
942 c
.common
.prp1
= cpu_to_le64(dma_addr
);
943 c
.common
.cdw10
[0] = cpu_to_le32((((sizeof(struct nvme_smart_log
) /
944 BYTES_TO_DWORDS
) - 1) << 16) | NVME_LOG_SMART
);
945 res
= nvme_submit_sync_cmd(dev
->admin_q
, &c
);
946 if (res
!= NVME_SC_SUCCESS
) {
947 temp_c_cur
= LOG_TEMP_UNKNOWN
;
950 temp_k
= (smart_log
->temperature
[1] << 8) +
951 (smart_log
->temperature
[0]);
952 temp_c_cur
= temp_k
- KELVIN_TEMP_FACTOR
;
955 /* Get Features for Temp Threshold */
956 res
= nvme_get_features(dev
, NVME_FEAT_TEMP_THRESH
, 0, 0,
958 if (res
!= NVME_SC_SUCCESS
)
959 temp_c_thresh
= LOG_TEMP_UNKNOWN
;
961 temp_c_thresh
= (feature_resp
& 0xFFFF) - KELVIN_TEMP_FACTOR
;
963 log_response
[0] = LOG_PAGE_TEMPERATURE_PAGE
;
964 /* Subpage=0x00, Page Length MSB=0 */
965 log_response
[3] = REMAINING_TEMP_PAGE_LENGTH
;
966 /* Temperature Log Parameter 1 (Temperature) Start */
967 /* Parameter Code = 0x0000 */
968 log_response
[6] = 0x01; /* Format and Linking = 01b */
969 log_response
[7] = 0x02; /* Parameter Length */
970 /* Use Temperature from NVMe Get Log Page, convert to C from K */
971 log_response
[9] = temp_c_cur
;
972 /* Temperature Log Parameter 2 (Reference Temperature) Start */
973 log_response
[11] = 0x01; /* Parameter Code = 0x0001 */
974 log_response
[12] = 0x01; /* Format and Linking = 01b */
975 log_response
[13] = 0x02; /* Parameter Length */
976 /* Use Temperature Thresh from NVMe Get Log Page, convert to C from K */
977 log_response
[15] = temp_c_thresh
;
979 xfer_len
= min(alloc_len
, LOG_TEMP_PAGE_LENGTH
);
980 res
= nvme_trans_copy_to_user(hdr
, log_response
, xfer_len
);
982 dma_free_coherent(dev
->dev
, sizeof(struct nvme_smart_log
),
990 /* MODE SENSE Helper Functions */
992 static int nvme_trans_fill_mode_parm_hdr(u8
*resp
, int len
, u8 cdb10
, u8 llbaa
,
993 u16 mode_data_length
, u16 blk_desc_len
)
995 /* Quick check to make sure I don't stomp on my own memory... */
996 if ((cdb10
&& len
< 8) || (!cdb10
&& len
< 4))
1000 resp
[0] = (mode_data_length
& 0xFF00) >> 8;
1001 resp
[1] = (mode_data_length
& 0x00FF);
1002 /* resp[2] and [3] are zero */
1004 resp
[5] = RESERVED_FIELD
;
1005 resp
[6] = (blk_desc_len
& 0xFF00) >> 8;
1006 resp
[7] = (blk_desc_len
& 0x00FF);
1008 resp
[0] = (mode_data_length
& 0x00FF);
1009 /* resp[1] and [2] are zero */
1010 resp
[3] = (blk_desc_len
& 0x00FF);
1016 static int nvme_trans_fill_blk_desc(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1017 u8
*resp
, int len
, u8 llbaa
)
1021 struct nvme_dev
*dev
= ns
->dev
;
1022 dma_addr_t dma_addr
;
1024 struct nvme_id_ns
*id_ns
;
1028 if (llbaa
== 0 && len
< MODE_PAGE_BLK_DES_LEN
)
1030 else if (llbaa
> 0 && len
< MODE_PAGE_LLBAA_BLK_DES_LEN
)
1033 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
1034 &dma_addr
, GFP_KERNEL
);
1040 /* nvme ns identify */
1041 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
1042 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1047 flbas
= (id_ns
->flbas
) & 0x0F;
1048 lba_length
= (1 << (id_ns
->lbaf
[flbas
].ds
));
1051 __be32 tmp_cap
= cpu_to_be32(le64_to_cpu(id_ns
->ncap
));
1052 /* Byte 4 is reserved */
1053 __be32 tmp_len
= cpu_to_be32(lba_length
& 0x00FFFFFF);
1055 memcpy(resp
, &tmp_cap
, sizeof(u32
));
1056 memcpy(&resp
[4], &tmp_len
, sizeof(u32
));
1058 __be64 tmp_cap
= cpu_to_be64(le64_to_cpu(id_ns
->ncap
));
1059 __be32 tmp_len
= cpu_to_be32(lba_length
);
1061 memcpy(resp
, &tmp_cap
, sizeof(u64
));
1062 /* Bytes 8, 9, 10, 11 are reserved */
1063 memcpy(&resp
[12], &tmp_len
, sizeof(u32
));
1067 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
1072 static int nvme_trans_fill_control_page(struct nvme_ns
*ns
,
1073 struct sg_io_hdr
*hdr
, u8
*resp
,
1076 if (len
< MODE_PAGE_CONTROL_LEN
)
1079 resp
[0] = MODE_PAGE_CONTROL
;
1080 resp
[1] = MODE_PAGE_CONTROL_LEN_FIELD
;
1081 resp
[2] = 0x0E; /* TST=000b, TMF_ONLY=0, DPICZ=1,
1082 * D_SENSE=1, GLTSD=1, RLEC=0 */
1083 resp
[3] = 0x12; /* Q_ALGO_MODIFIER=1h, NUAR=0, QERR=01b */
1084 /* Byte 4: VS=0, RAC=0, UA_INT=0, SWP=0 */
1085 resp
[5] = 0x40; /* ATO=0, TAS=1, ATMPE=0, RWWP=0, AUTOLOAD=0 */
1086 /* resp[6] and [7] are obsolete, thus zero */
1087 resp
[8] = 0xFF; /* Busy timeout period = 0xffff */
1089 /* Bytes 10,11: Extended selftest completion time = 0x0000 */
1094 static int nvme_trans_fill_caching_page(struct nvme_ns
*ns
,
1095 struct sg_io_hdr
*hdr
,
1100 struct nvme_dev
*dev
= ns
->dev
;
1104 if (len
< MODE_PAGE_CACHING_LEN
)
1107 nvme_sc
= nvme_get_features(dev
, NVME_FEAT_VOLATILE_WC
, 0, 0,
1109 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1113 vwc
= feature_resp
& 0x00000001;
1115 resp
[0] = MODE_PAGE_CACHING
;
1116 resp
[1] = MODE_PAGE_CACHING_LEN_FIELD
;
1121 static int nvme_trans_fill_pow_cnd_page(struct nvme_ns
*ns
,
1122 struct sg_io_hdr
*hdr
, u8
*resp
,
1125 if (len
< MODE_PAGE_POW_CND_LEN
)
1128 resp
[0] = MODE_PAGE_POWER_CONDITION
;
1129 resp
[1] = MODE_PAGE_POW_CND_LEN_FIELD
;
1130 /* All other bytes are zero */
1135 static int nvme_trans_fill_inf_exc_page(struct nvme_ns
*ns
,
1136 struct sg_io_hdr
*hdr
, u8
*resp
,
1139 if (len
< MODE_PAGE_INF_EXC_LEN
)
1142 resp
[0] = MODE_PAGE_INFO_EXCEP
;
1143 resp
[1] = MODE_PAGE_INF_EXC_LEN_FIELD
;
1145 /* All other bytes are zero */
1150 static int nvme_trans_fill_all_pages(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1154 u16 mode_pages_offset_1
= 0;
1155 u16 mode_pages_offset_2
, mode_pages_offset_3
, mode_pages_offset_4
;
1157 mode_pages_offset_2
= mode_pages_offset_1
+ MODE_PAGE_CACHING_LEN
;
1158 mode_pages_offset_3
= mode_pages_offset_2
+ MODE_PAGE_CONTROL_LEN
;
1159 mode_pages_offset_4
= mode_pages_offset_3
+ MODE_PAGE_POW_CND_LEN
;
1161 res
= nvme_trans_fill_caching_page(ns
, hdr
, &resp
[mode_pages_offset_1
],
1162 MODE_PAGE_CACHING_LEN
);
1165 res
= nvme_trans_fill_control_page(ns
, hdr
, &resp
[mode_pages_offset_2
],
1166 MODE_PAGE_CONTROL_LEN
);
1169 res
= nvme_trans_fill_pow_cnd_page(ns
, hdr
, &resp
[mode_pages_offset_3
],
1170 MODE_PAGE_POW_CND_LEN
);
1173 return nvme_trans_fill_inf_exc_page(ns
, hdr
, &resp
[mode_pages_offset_4
],
1174 MODE_PAGE_INF_EXC_LEN
);
1177 static inline int nvme_trans_get_blk_desc_len(u8 dbd
, u8 llbaa
)
1179 if (dbd
== MODE_SENSE_BLK_DESC_ENABLED
) {
1180 /* SPC-4: len = 8 x Num_of_descriptors if llbaa = 0, 16x if 1 */
1181 return 8 * (llbaa
+ 1) * MODE_SENSE_BLK_DESC_COUNT
;
1187 static int nvme_trans_mode_page_create(struct nvme_ns
*ns
,
1188 struct sg_io_hdr
*hdr
, u8
*cmd
,
1189 u16 alloc_len
, u8 cdb10
,
1190 int (*mode_page_fill_func
)
1192 struct sg_io_hdr
*hdr
, u8
*, int),
1193 u16 mode_pages_tot_len
)
1201 u16 mode_pages_offset_1
;
1202 u16 blk_desc_len
, blk_desc_offset
, mode_data_length
;
1204 dbd
= (cmd
[1] & MODE_SENSE_DBD_MASK
) >> MODE_SENSE_DBD_SHIFT
;
1205 llbaa
= (cmd
[1] & MODE_SENSE_LLBAA_MASK
) >> MODE_SENSE_LLBAA_SHIFT
;
1206 mph_size
= cdb10
? MODE_SENSE10_MPH_SIZE
: MODE_SENSE6_MPH_SIZE
;
1208 blk_desc_len
= nvme_trans_get_blk_desc_len(dbd
, llbaa
);
1210 resp_size
= mph_size
+ blk_desc_len
+ mode_pages_tot_len
;
1211 /* Refer spc4r34 Table 440 for calculation of Mode data Length field */
1212 mode_data_length
= 3 + (3 * cdb10
) + blk_desc_len
+ mode_pages_tot_len
;
1214 blk_desc_offset
= mph_size
;
1215 mode_pages_offset_1
= blk_desc_offset
+ blk_desc_len
;
1217 response
= kzalloc(resp_size
, GFP_KERNEL
);
1218 if (response
== NULL
) {
1223 res
= nvme_trans_fill_mode_parm_hdr(&response
[0], mph_size
, cdb10
,
1224 llbaa
, mode_data_length
, blk_desc_len
);
1227 if (blk_desc_len
> 0) {
1228 res
= nvme_trans_fill_blk_desc(ns
, hdr
,
1229 &response
[blk_desc_offset
],
1230 blk_desc_len
, llbaa
);
1234 res
= mode_page_fill_func(ns
, hdr
, &response
[mode_pages_offset_1
],
1235 mode_pages_tot_len
);
1239 xfer_len
= min(alloc_len
, resp_size
);
1240 res
= nvme_trans_copy_to_user(hdr
, response
, xfer_len
);
1248 /* Read Capacity Helper Functions */
1250 static void nvme_trans_fill_read_cap(u8
*response
, struct nvme_id_ns
*id_ns
,
1257 u8 p_type_lut
[4] = {0, 0, 1, 2};
1262 flbas
= (id_ns
->flbas
) & 0x0F;
1263 lba_length
= (1 << (id_ns
->lbaf
[flbas
].ds
));
1264 rlba
= le64_to_cpup(&id_ns
->nsze
) - 1;
1265 (id_ns
->dps
) ? (prot_en
= 0x01) : (prot_en
= 0);
1268 if (rlba
> 0xFFFFFFFF)
1270 tmp_rlba_32
= cpu_to_be32(rlba
);
1271 tmp_len
= cpu_to_be32(lba_length
);
1272 memcpy(response
, &tmp_rlba_32
, sizeof(u32
));
1273 memcpy(&response
[4], &tmp_len
, sizeof(u32
));
1275 tmp_rlba
= cpu_to_be64(rlba
);
1276 tmp_len
= cpu_to_be32(lba_length
);
1277 memcpy(response
, &tmp_rlba
, sizeof(u64
));
1278 memcpy(&response
[8], &tmp_len
, sizeof(u32
));
1279 response
[12] = (p_type_lut
[id_ns
->dps
& 0x3] << 1) | prot_en
;
1280 /* P_I_Exponent = 0x0 | LBPPBE = 0x0 */
1281 /* LBPME = 0 | LBPRZ = 0 | LALBA = 0x00 */
1282 /* Bytes 16-31 - Reserved */
1286 /* Start Stop Unit Helper Functions */
1288 static int nvme_trans_power_state(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1289 u8 pc
, u8 pcmod
, u8 start
)
1293 struct nvme_dev
*dev
= ns
->dev
;
1294 dma_addr_t dma_addr
;
1296 struct nvme_id_ctrl
*id_ctrl
;
1297 int lowest_pow_st
; /* max npss = lowest power consumption */
1298 unsigned ps_desired
= 0;
1300 /* NVMe Controller Identify */
1301 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ctrl
),
1302 &dma_addr
, GFP_KERNEL
);
1307 nvme_sc
= nvme_identify(dev
, 0, 1, dma_addr
);
1308 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1313 lowest_pow_st
= max(POWER_STATE_0
, (int)(id_ctrl
->npss
- 1));
1316 case NVME_POWER_STATE_START_VALID
:
1317 /* Action unspecified if POWER CONDITION MODIFIER != 0 */
1318 if (pcmod
== 0 && start
== 0x1)
1319 ps_desired
= POWER_STATE_0
;
1320 if (pcmod
== 0 && start
== 0x0)
1321 ps_desired
= lowest_pow_st
;
1323 case NVME_POWER_STATE_ACTIVE
:
1324 /* Action unspecified if POWER CONDITION MODIFIER != 0 */
1326 ps_desired
= POWER_STATE_0
;
1328 case NVME_POWER_STATE_IDLE
:
1329 /* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */
1331 ps_desired
= POWER_STATE_1
;
1332 else if (pcmod
== 0x1)
1333 ps_desired
= POWER_STATE_2
;
1334 else if (pcmod
== 0x2)
1335 ps_desired
= POWER_STATE_3
;
1337 case NVME_POWER_STATE_STANDBY
:
1338 /* Action unspecified if POWER CONDITION MODIFIER != [0,1] */
1340 ps_desired
= max(POWER_STATE_0
, (lowest_pow_st
- 2));
1341 else if (pcmod
== 0x1)
1342 ps_desired
= max(POWER_STATE_0
, (lowest_pow_st
- 1));
1344 case NVME_POWER_STATE_LU_CONTROL
:
1346 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1347 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
1348 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1351 nvme_sc
= nvme_set_features(dev
, NVME_FEAT_POWER_MGMT
, ps_desired
, 0,
1353 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1356 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ctrl
), mem
, dma_addr
);
1361 static int nvme_trans_send_activate_fw_cmd(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1364 struct nvme_command c
;
1367 memset(&c
, 0, sizeof(c
));
1368 c
.common
.opcode
= nvme_admin_activate_fw
;
1369 c
.common
.cdw10
[0] = cpu_to_le32(buffer_id
| NVME_FWACT_REPL_ACTV
);
1371 nvme_sc
= nvme_submit_sync_cmd(ns
->queue
, &c
);
1372 return nvme_trans_status_code(hdr
, nvme_sc
);
1375 static int nvme_trans_send_download_fw_cmd(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1376 u8 opcode
, u32 tot_len
, u32 offset
,
1381 struct nvme_dev
*dev
= ns
->dev
;
1382 struct nvme_command c
;
1383 struct nvme_iod
*iod
= NULL
;
1386 memset(&c
, 0, sizeof(c
));
1387 c
.common
.opcode
= nvme_admin_download_fw
;
1389 if (hdr
->iovec_count
> 0) {
1390 /* Assuming SGL is not allowed for this command */
1391 return nvme_trans_completion(hdr
,
1392 SAM_STAT_CHECK_CONDITION
,
1394 SCSI_ASC_INVALID_CDB
,
1395 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1397 iod
= nvme_map_user_pages(dev
, DMA_TO_DEVICE
,
1398 (unsigned long)hdr
->dxferp
, tot_len
);
1400 return PTR_ERR(iod
);
1401 length
= nvme_setup_prps(dev
, iod
, tot_len
, GFP_KERNEL
);
1402 if (length
!= tot_len
) {
1407 c
.dlfw
.prp1
= cpu_to_le64(sg_dma_address(iod
->sg
));
1408 c
.dlfw
.prp2
= cpu_to_le64(iod
->first_dma
);
1409 c
.dlfw
.numd
= cpu_to_le32((tot_len
/BYTES_TO_DWORDS
) - 1);
1410 c
.dlfw
.offset
= cpu_to_le32(offset
/BYTES_TO_DWORDS
);
1412 nvme_sc
= nvme_submit_sync_cmd(dev
->admin_q
, &c
);
1413 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1416 nvme_unmap_user_pages(dev
, DMA_TO_DEVICE
, iod
);
1417 nvme_free_iod(dev
, iod
);
1421 /* Mode Select Helper Functions */
1423 static inline void nvme_trans_modesel_get_bd_len(u8
*parm_list
, u8 cdb10
,
1424 u16
*bd_len
, u8
*llbaa
)
1428 *bd_len
= (parm_list
[MODE_SELECT_10_BD_OFFSET
] << 8) +
1429 parm_list
[MODE_SELECT_10_BD_OFFSET
+ 1];
1430 *llbaa
= parm_list
[MODE_SELECT_10_LLBAA_OFFSET
] &
1431 MODE_SELECT_10_LLBAA_MASK
;
1434 *bd_len
= parm_list
[MODE_SELECT_6_BD_OFFSET
];
1438 static void nvme_trans_modesel_save_bd(struct nvme_ns
*ns
, u8
*parm_list
,
1439 u16 idx
, u16 bd_len
, u8 llbaa
)
1443 bd_num
= bd_len
/ ((llbaa
== 0) ?
1444 SHORT_DESC_BLOCK
: LONG_DESC_BLOCK
);
1445 /* Store block descriptor info if a FORMAT UNIT comes later */
1446 /* TODO Saving 1st BD info; what to do if multiple BD received? */
1448 /* Standard Block Descriptor - spc4r34 7.5.5.1 */
1449 ns
->mode_select_num_blocks
=
1450 (parm_list
[idx
+ 1] << 16) +
1451 (parm_list
[idx
+ 2] << 8) +
1452 (parm_list
[idx
+ 3]);
1454 ns
->mode_select_block_len
=
1455 (parm_list
[idx
+ 5] << 16) +
1456 (parm_list
[idx
+ 6] << 8) +
1457 (parm_list
[idx
+ 7]);
1459 /* Long LBA Block Descriptor - sbc3r27 6.4.2.3 */
1460 ns
->mode_select_num_blocks
=
1461 (((u64
)parm_list
[idx
+ 0]) << 56) +
1462 (((u64
)parm_list
[idx
+ 1]) << 48) +
1463 (((u64
)parm_list
[idx
+ 2]) << 40) +
1464 (((u64
)parm_list
[idx
+ 3]) << 32) +
1465 (((u64
)parm_list
[idx
+ 4]) << 24) +
1466 (((u64
)parm_list
[idx
+ 5]) << 16) +
1467 (((u64
)parm_list
[idx
+ 6]) << 8) +
1468 ((u64
)parm_list
[idx
+ 7]);
1470 ns
->mode_select_block_len
=
1471 (parm_list
[idx
+ 12] << 24) +
1472 (parm_list
[idx
+ 13] << 16) +
1473 (parm_list
[idx
+ 14] << 8) +
1474 (parm_list
[idx
+ 15]);
1478 static int nvme_trans_modesel_get_mp(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1479 u8
*mode_page
, u8 page_code
)
1483 struct nvme_dev
*dev
= ns
->dev
;
1486 switch (page_code
) {
1487 case MODE_PAGE_CACHING
:
1488 dword11
= ((mode_page
[2] & CACHING_MODE_PAGE_WCE_MASK
) ? 1 : 0);
1489 nvme_sc
= nvme_set_features(dev
, NVME_FEAT_VOLATILE_WC
, dword11
,
1491 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1493 case MODE_PAGE_CONTROL
:
1495 case MODE_PAGE_POWER_CONDITION
:
1496 /* Verify the OS is not trying to set timers */
1497 if ((mode_page
[2] & 0x01) != 0 || (mode_page
[3] & 0x0F) != 0) {
1498 res
= nvme_trans_completion(hdr
,
1499 SAM_STAT_CHECK_CONDITION
,
1501 SCSI_ASC_INVALID_PARAMETER
,
1502 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1507 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1508 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
1509 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1516 static int nvme_trans_modesel_data(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1517 u8
*cmd
, u16 parm_list_len
, u8 pf
,
1524 u16 index
, saved_index
;
1528 /* Get parm list from data-in/out buffer */
1529 parm_list
= kmalloc(parm_list_len
, GFP_KERNEL
);
1530 if (parm_list
== NULL
) {
1535 res
= nvme_trans_copy_from_user(hdr
, parm_list
, parm_list_len
);
1539 nvme_trans_modesel_get_bd_len(parm_list
, cdb10
, &bd_len
, &llbaa
);
1540 index
= (cdb10
) ? (MODE_SELECT_10_MPH_SIZE
) : (MODE_SELECT_6_MPH_SIZE
);
1543 /* Block Descriptors present, parse */
1544 nvme_trans_modesel_save_bd(ns
, parm_list
, index
, bd_len
, llbaa
);
1547 saved_index
= index
;
1549 /* Multiple mode pages may be present; iterate through all */
1550 /* In 1st Iteration, don't do NVME Command, only check for CDB errors */
1552 page_code
= parm_list
[index
] & MODE_SELECT_PAGE_CODE_MASK
;
1553 mp_size
= parm_list
[index
+ 1] + 2;
1554 if ((page_code
!= MODE_PAGE_CACHING
) &&
1555 (page_code
!= MODE_PAGE_CONTROL
) &&
1556 (page_code
!= MODE_PAGE_POWER_CONDITION
)) {
1557 res
= nvme_trans_completion(hdr
,
1558 SAM_STAT_CHECK_CONDITION
,
1560 SCSI_ASC_INVALID_CDB
,
1561 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1565 } while (index
< parm_list_len
);
1567 /* In 2nd Iteration, do the NVME Commands */
1568 index
= saved_index
;
1570 page_code
= parm_list
[index
] & MODE_SELECT_PAGE_CODE_MASK
;
1571 mp_size
= parm_list
[index
+ 1] + 2;
1572 res
= nvme_trans_modesel_get_mp(ns
, hdr
, &parm_list
[index
],
1577 } while (index
< parm_list_len
);
1585 /* Format Unit Helper Functions */
1587 static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns
*ns
,
1588 struct sg_io_hdr
*hdr
)
1592 struct nvme_dev
*dev
= ns
->dev
;
1593 dma_addr_t dma_addr
;
1595 struct nvme_id_ns
*id_ns
;
1599 * SCSI Expects a MODE SELECT would have been issued prior to
1600 * a FORMAT UNIT, and the block size and number would be used
1601 * from the block descriptor in it. If a MODE SELECT had not
1602 * been issued, FORMAT shall use the current values for both.
1605 if (ns
->mode_select_num_blocks
== 0 || ns
->mode_select_block_len
== 0) {
1606 mem
= dma_alloc_coherent(dev
->dev
,
1607 sizeof(struct nvme_id_ns
), &dma_addr
, GFP_KERNEL
);
1612 /* nvme ns identify */
1613 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
1614 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1620 if (ns
->mode_select_num_blocks
== 0)
1621 ns
->mode_select_num_blocks
= le64_to_cpu(id_ns
->ncap
);
1622 if (ns
->mode_select_block_len
== 0) {
1623 flbas
= (id_ns
->flbas
) & 0x0F;
1624 ns
->mode_select_block_len
=
1625 (1 << (id_ns
->lbaf
[flbas
].ds
));
1628 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
1635 static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr
*hdr
, u8 len
,
1636 u8 format_prot_info
, u8
*nvme_pf_code
)
1640 u8 pf_usage
, pf_code
;
1642 parm_list
= kmalloc(len
, GFP_KERNEL
);
1643 if (parm_list
== NULL
) {
1647 res
= nvme_trans_copy_from_user(hdr
, parm_list
, len
);
1651 if ((parm_list
[FORMAT_UNIT_IMMED_OFFSET
] &
1652 FORMAT_UNIT_IMMED_MASK
) != 0) {
1653 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1654 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
1655 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1659 if (len
== FORMAT_UNIT_LONG_PARM_LIST_LEN
&&
1660 (parm_list
[FORMAT_UNIT_PROT_INT_OFFSET
] & 0x0F) != 0) {
1661 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1662 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
1663 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1666 pf_usage
= parm_list
[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET
] &
1667 FORMAT_UNIT_PROT_FIELD_USAGE_MASK
;
1668 pf_code
= (pf_usage
<< 2) | format_prot_info
;
1683 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1684 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
1685 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1695 static int nvme_trans_fmt_send_cmd(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1700 struct nvme_dev
*dev
= ns
->dev
;
1701 dma_addr_t dma_addr
;
1703 struct nvme_id_ns
*id_ns
;
1706 u8 selected_lbaf
= 0xFF;
1708 struct nvme_command c
;
1710 /* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */
1711 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
1712 &dma_addr
, GFP_KERNEL
);
1717 /* nvme ns identify */
1718 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
1719 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1724 flbas
= (id_ns
->flbas
) & 0x0F;
1725 nlbaf
= id_ns
->nlbaf
;
1727 for (i
= 0; i
< nlbaf
; i
++) {
1728 if (ns
->mode_select_block_len
== (1 << (id_ns
->lbaf
[i
].ds
))) {
1733 if (selected_lbaf
> 0x0F) {
1734 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1735 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_PARAMETER
,
1736 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1738 if (ns
->mode_select_num_blocks
!= le64_to_cpu(id_ns
->ncap
)) {
1739 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
1740 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_PARAMETER
,
1741 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1744 cdw10
|= prot_info
<< 5;
1745 cdw10
|= selected_lbaf
& 0x0F;
1746 memset(&c
, 0, sizeof(c
));
1747 c
.format
.opcode
= nvme_admin_format_nvm
;
1748 c
.format
.nsid
= cpu_to_le32(ns
->ns_id
);
1749 c
.format
.cdw10
= cpu_to_le32(cdw10
);
1751 nvme_sc
= nvme_submit_sync_cmd(dev
->admin_q
, &c
);
1752 res
= nvme_trans_status_code(hdr
, nvme_sc
);
1755 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
1760 static inline u32
nvme_trans_io_get_num_cmds(struct sg_io_hdr
*hdr
,
1761 struct nvme_trans_io_cdb
*cdb_info
,
1764 /* If using iovecs, send one nvme command per vector */
1765 if (hdr
->iovec_count
> 0)
1766 return hdr
->iovec_count
;
1767 else if (cdb_info
->xfer_len
> max_blocks
)
1768 return ((cdb_info
->xfer_len
- 1) / max_blocks
) + 1;
1773 static u16
nvme_trans_io_get_control(struct nvme_ns
*ns
,
1774 struct nvme_trans_io_cdb
*cdb_info
)
1778 /* When Protection information support is added, implement here */
1780 if (cdb_info
->fua
> 0)
1781 control
|= NVME_RW_FUA
;
1786 static int nvme_trans_do_nvme_io(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1787 struct nvme_trans_io_cdb
*cdb_info
, u8 is_write
)
1789 int nvme_sc
= NVME_SC_SUCCESS
;
1790 struct nvme_dev
*dev
= ns
->dev
;
1792 struct nvme_iod
*iod
;
1794 u64 unit_num_blocks
; /* Number of blocks to xfer in each nvme cmd */
1797 u64 nvme_offset
= 0;
1798 void __user
*next_mapping_addr
;
1799 struct nvme_command c
;
1800 u8 opcode
= (is_write
? nvme_cmd_write
: nvme_cmd_read
);
1802 u32 max_blocks
= queue_max_hw_sectors(ns
->queue
);
1804 num_cmds
= nvme_trans_io_get_num_cmds(hdr
, cdb_info
, max_blocks
);
1807 * This loop handles two cases.
1808 * First, when an SGL is used in the form of an iovec list:
1809 * - Use iov_base as the next mapping address for the nvme command_id
1810 * - Use iov_len as the data transfer length for the command.
1811 * Second, when we have a single buffer
1812 * - If larger than max_blocks, split into chunks, offset
1813 * each nvme command accordingly.
1815 for (i
= 0; i
< num_cmds
; i
++) {
1816 memset(&c
, 0, sizeof(c
));
1817 if (hdr
->iovec_count
> 0) {
1818 struct sg_iovec sgl
;
1820 retcode
= copy_from_user(&sgl
, hdr
->dxferp
+
1821 i
* sizeof(struct sg_iovec
),
1822 sizeof(struct sg_iovec
));
1825 unit_len
= sgl
.iov_len
;
1826 unit_num_blocks
= unit_len
>> ns
->lba_shift
;
1827 next_mapping_addr
= sgl
.iov_base
;
1829 unit_num_blocks
= min((u64
)max_blocks
,
1830 (cdb_info
->xfer_len
- nvme_offset
));
1831 unit_len
= unit_num_blocks
<< ns
->lba_shift
;
1832 next_mapping_addr
= hdr
->dxferp
+
1833 ((1 << ns
->lba_shift
) * nvme_offset
);
1836 c
.rw
.opcode
= opcode
;
1837 c
.rw
.nsid
= cpu_to_le32(ns
->ns_id
);
1838 c
.rw
.slba
= cpu_to_le64(cdb_info
->lba
+ nvme_offset
);
1839 c
.rw
.length
= cpu_to_le16(unit_num_blocks
- 1);
1840 control
= nvme_trans_io_get_control(ns
, cdb_info
);
1841 c
.rw
.control
= cpu_to_le16(control
);
1843 iod
= nvme_map_user_pages(dev
,
1844 (is_write
) ? DMA_TO_DEVICE
: DMA_FROM_DEVICE
,
1845 (unsigned long)next_mapping_addr
, unit_len
);
1847 return PTR_ERR(iod
);
1849 retcode
= nvme_setup_prps(dev
, iod
, unit_len
, GFP_KERNEL
);
1850 if (retcode
!= unit_len
) {
1851 nvme_unmap_user_pages(dev
,
1852 (is_write
) ? DMA_TO_DEVICE
: DMA_FROM_DEVICE
,
1854 nvme_free_iod(dev
, iod
);
1857 c
.rw
.prp1
= cpu_to_le64(sg_dma_address(iod
->sg
));
1858 c
.rw
.prp2
= cpu_to_le64(iod
->first_dma
);
1860 nvme_offset
+= unit_num_blocks
;
1862 nvme_sc
= nvme_submit_sync_cmd(ns
->queue
, &c
);
1864 nvme_unmap_user_pages(dev
,
1865 (is_write
) ? DMA_TO_DEVICE
: DMA_FROM_DEVICE
,
1867 nvme_free_iod(dev
, iod
);
1870 if (nvme_sc
!= NVME_SC_SUCCESS
)
1874 return nvme_trans_status_code(hdr
, nvme_sc
);
1878 /* SCSI Command Translation Functions */
1880 static int nvme_trans_io(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
, u8 is_write
,
1884 struct nvme_trans_io_cdb cdb_info
= { 0, };
1887 u64 sum_iov_len
= 0;
1888 struct sg_iovec sgl
;
1893 * The FUA and WPROTECT fields are not supported in 6-byte CDBs,
1894 * but always in the same place for all others.
1901 cdb_info
.fua
= cmd
[1] & 0x8;
1902 cdb_info
.prot_info
= (cmd
[1] & 0xe0) >> 5;
1908 cdb_info
.lba
= get_unaligned_be24(&cmd
[1]);
1909 cdb_info
.xfer_len
= cmd
[4];
1910 if (cdb_info
.xfer_len
== 0)
1911 cdb_info
.xfer_len
= 256;
1915 cdb_info
.lba
= get_unaligned_be32(&cmd
[2]);
1916 cdb_info
.xfer_len
= get_unaligned_be16(&cmd
[7]);
1920 cdb_info
.lba
= get_unaligned_be32(&cmd
[2]);
1921 cdb_info
.xfer_len
= get_unaligned_be32(&cmd
[6]);
1925 cdb_info
.lba
= get_unaligned_be64(&cmd
[2]);
1926 cdb_info
.xfer_len
= get_unaligned_be32(&cmd
[10]);
1929 /* Will never really reach here */
1934 /* Calculate total length of transfer (in bytes) */
1935 if (hdr
->iovec_count
> 0) {
1936 for (i
= 0; i
< hdr
->iovec_count
; i
++) {
1937 not_copied
= copy_from_user(&sgl
, hdr
->dxferp
+
1938 i
* sizeof(struct sg_iovec
),
1939 sizeof(struct sg_iovec
));
1942 sum_iov_len
+= sgl
.iov_len
;
1943 /* IO vector sizes should be multiples of block size */
1944 if (sgl
.iov_len
% (1 << ns
->lba_shift
) != 0) {
1945 res
= nvme_trans_completion(hdr
,
1946 SAM_STAT_CHECK_CONDITION
,
1948 SCSI_ASC_INVALID_PARAMETER
,
1949 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
1954 sum_iov_len
= hdr
->dxfer_len
;
1957 /* As Per sg ioctl howto, if the lengths differ, use the lower one */
1958 xfer_bytes
= min(((u64
)hdr
->dxfer_len
), sum_iov_len
);
1960 /* If block count and actual data buffer size dont match, error out */
1961 if (xfer_bytes
!= (cdb_info
.xfer_len
<< ns
->lba_shift
)) {
1966 /* Check for 0 length transfer - it is not illegal */
1967 if (cdb_info
.xfer_len
== 0)
1970 /* Send NVMe IO Command(s) */
1971 res
= nvme_trans_do_nvme_io(ns
, hdr
, &cdb_info
, is_write
);
1979 static int nvme_trans_inquiry(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
1988 evpd
= cmd
[1] & 0x01;
1990 alloc_len
= get_unaligned_be16(&cmd
[3]);
1992 inq_response
= kmalloc(alloc_len
, GFP_KERNEL
);
1993 if (inq_response
== NULL
) {
1999 if (page_code
== INQ_STANDARD_INQUIRY_PAGE
) {
2000 res
= nvme_trans_standard_inquiry_page(ns
, hdr
,
2001 inq_response
, alloc_len
);
2003 res
= nvme_trans_completion(hdr
,
2004 SAM_STAT_CHECK_CONDITION
,
2006 SCSI_ASC_INVALID_CDB
,
2007 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2010 switch (page_code
) {
2011 case VPD_SUPPORTED_PAGES
:
2012 res
= nvme_trans_supported_vpd_pages(ns
, hdr
,
2013 inq_response
, alloc_len
);
2015 case VPD_SERIAL_NUMBER
:
2016 res
= nvme_trans_unit_serial_page(ns
, hdr
, inq_response
,
2019 case VPD_DEVICE_IDENTIFIERS
:
2020 res
= nvme_trans_device_id_page(ns
, hdr
, inq_response
,
2023 case VPD_EXTENDED_INQUIRY
:
2024 res
= nvme_trans_ext_inq_page(ns
, hdr
, alloc_len
);
2026 case VPD_BLOCK_LIMITS
:
2027 res
= nvme_trans_bdev_limits_page(ns
, hdr
, inq_response
,
2030 case VPD_BLOCK_DEV_CHARACTERISTICS
:
2031 res
= nvme_trans_bdev_char_page(ns
, hdr
, alloc_len
);
2034 res
= nvme_trans_completion(hdr
,
2035 SAM_STAT_CHECK_CONDITION
,
2037 SCSI_ASC_INVALID_CDB
,
2038 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2042 kfree(inq_response
);
2047 static int nvme_trans_log_sense(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2055 if (cmd
[1] != LOG_SENSE_CDB_SP_NOT_ENABLED
) {
2056 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2057 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2058 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2062 page_code
= cmd
[2] & LOG_SENSE_CDB_PAGE_CODE_MASK
;
2063 pc
= (cmd
[2] & LOG_SENSE_CDB_PC_MASK
) >> LOG_SENSE_CDB_PC_SHIFT
;
2064 if (pc
!= LOG_SENSE_CDB_PC_CUMULATIVE_VALUES
) {
2065 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2066 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2067 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2070 alloc_len
= get_unaligned_be16(&cmd
[7]);
2071 switch (page_code
) {
2072 case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE
:
2073 res
= nvme_trans_log_supp_pages(ns
, hdr
, alloc_len
);
2075 case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE
:
2076 res
= nvme_trans_log_info_exceptions(ns
, hdr
, alloc_len
);
2078 case LOG_PAGE_TEMPERATURE_PAGE
:
2079 res
= nvme_trans_log_temperature(ns
, hdr
, alloc_len
);
2082 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2083 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2084 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2092 static int nvme_trans_mode_select(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2100 page_format
= cmd
[1] & MODE_SELECT_CDB_PAGE_FORMAT_MASK
;
2101 save_pages
= cmd
[1] & MODE_SELECT_CDB_SAVE_PAGES_MASK
;
2103 if (cmd
[0] == MODE_SELECT
) {
2104 parm_list_len
= cmd
[4];
2106 parm_list_len
= cmd
[7];
2110 if (parm_list_len
!= 0) {
2112 * According to SPC-4 r24, a paramter list length field of 0
2113 * shall not be considered an error
2115 return nvme_trans_modesel_data(ns
, hdr
, cmd
, parm_list_len
,
2116 page_format
, save_pages
, cdb10
);
2122 static int nvme_trans_mode_sense(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2129 if (cmd
[0] == MODE_SENSE
) {
2132 alloc_len
= get_unaligned_be16(&cmd
[7]);
2136 if ((cmd
[2] & MODE_SENSE_PAGE_CONTROL_MASK
) !=
2137 MODE_SENSE_PC_CURRENT_VALUES
) {
2138 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2139 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2140 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2144 switch (cmd
[2] & MODE_SENSE_PAGE_CODE_MASK
) {
2145 case MODE_PAGE_CACHING
:
2146 res
= nvme_trans_mode_page_create(ns
, hdr
, cmd
, alloc_len
,
2148 &nvme_trans_fill_caching_page
,
2149 MODE_PAGE_CACHING_LEN
);
2151 case MODE_PAGE_CONTROL
:
2152 res
= nvme_trans_mode_page_create(ns
, hdr
, cmd
, alloc_len
,
2154 &nvme_trans_fill_control_page
,
2155 MODE_PAGE_CONTROL_LEN
);
2157 case MODE_PAGE_POWER_CONDITION
:
2158 res
= nvme_trans_mode_page_create(ns
, hdr
, cmd
, alloc_len
,
2160 &nvme_trans_fill_pow_cnd_page
,
2161 MODE_PAGE_POW_CND_LEN
);
2163 case MODE_PAGE_INFO_EXCEP
:
2164 res
= nvme_trans_mode_page_create(ns
, hdr
, cmd
, alloc_len
,
2166 &nvme_trans_fill_inf_exc_page
,
2167 MODE_PAGE_INF_EXC_LEN
);
2169 case MODE_PAGE_RETURN_ALL
:
2170 res
= nvme_trans_mode_page_create(ns
, hdr
, cmd
, alloc_len
,
2172 &nvme_trans_fill_all_pages
,
2176 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2177 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2178 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2186 static int nvme_trans_read_capacity(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2194 struct nvme_dev
*dev
= ns
->dev
;
2195 dma_addr_t dma_addr
;
2197 struct nvme_id_ns
*id_ns
;
2201 alloc_len
= get_unaligned_be32(&cmd
[10]);
2202 resp_size
= READ_CAP_16_RESP_SIZE
;
2204 alloc_len
= READ_CAP_10_RESP_SIZE
;
2205 resp_size
= READ_CAP_10_RESP_SIZE
;
2208 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ns
),
2209 &dma_addr
, GFP_KERNEL
);
2214 /* nvme ns identify */
2215 nvme_sc
= nvme_identify(dev
, ns
->ns_id
, 0, dma_addr
);
2216 res
= nvme_trans_status_code(hdr
, nvme_sc
);
2222 response
= kzalloc(resp_size
, GFP_KERNEL
);
2223 if (response
== NULL
) {
2227 nvme_trans_fill_read_cap(response
, id_ns
, cdb16
);
2229 xfer_len
= min(alloc_len
, resp_size
);
2230 res
= nvme_trans_copy_to_user(hdr
, response
, xfer_len
);
2234 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ns
), mem
, dma_addr
);
2239 static int nvme_trans_report_luns(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2244 u32 alloc_len
, xfer_len
, resp_size
;
2246 struct nvme_dev
*dev
= ns
->dev
;
2247 dma_addr_t dma_addr
;
2249 struct nvme_id_ctrl
*id_ctrl
;
2250 u32 ll_length
, lun_id
;
2251 u8 lun_id_offset
= REPORT_LUNS_FIRST_LUN_OFFSET
;
2256 return nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2257 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2258 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2259 case ALL_LUNS_RETURNED
:
2260 case ALL_WELL_KNOWN_LUNS_RETURNED
:
2261 case RESTRICTED_LUNS_RETURNED
:
2262 /* NVMe Controller Identify */
2263 mem
= dma_alloc_coherent(dev
->dev
, sizeof(struct nvme_id_ctrl
),
2264 &dma_addr
, GFP_KERNEL
);
2269 nvme_sc
= nvme_identify(dev
, 0, 1, dma_addr
);
2270 res
= nvme_trans_status_code(hdr
, nvme_sc
);
2275 ll_length
= le32_to_cpu(id_ctrl
->nn
) * LUN_ENTRY_SIZE
;
2276 resp_size
= ll_length
+ LUN_DATA_HEADER_SIZE
;
2278 alloc_len
= get_unaligned_be32(&cmd
[6]);
2279 if (alloc_len
< resp_size
) {
2280 res
= nvme_trans_completion(hdr
,
2281 SAM_STAT_CHECK_CONDITION
,
2282 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2283 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2287 response
= kzalloc(resp_size
, GFP_KERNEL
);
2288 if (response
== NULL
) {
2293 /* The first LUN ID will always be 0 per the SAM spec */
2294 for (lun_id
= 0; lun_id
< le32_to_cpu(id_ctrl
->nn
); lun_id
++) {
2296 * Set the LUN Id and then increment to the next LUN
2297 * location in the parameter data.
2299 __be64 tmp_id
= cpu_to_be64(lun_id
);
2300 memcpy(&response
[lun_id_offset
], &tmp_id
, sizeof(u64
));
2301 lun_id_offset
+= LUN_ENTRY_SIZE
;
2303 tmp_len
= cpu_to_be32(ll_length
);
2304 memcpy(response
, &tmp_len
, sizeof(u32
));
2307 xfer_len
= min(alloc_len
, resp_size
);
2308 res
= nvme_trans_copy_to_user(hdr
, response
, xfer_len
);
2312 dma_free_coherent(dev
->dev
, sizeof(struct nvme_id_ctrl
), mem
, dma_addr
);
2317 static int nvme_trans_request_sense(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2321 u8 alloc_len
, xfer_len
, resp_size
;
2325 desc_format
= cmd
[1] & 0x01;
2328 resp_size
= ((desc_format
) ? (DESC_FMT_SENSE_DATA_SIZE
) :
2329 (FIXED_FMT_SENSE_DATA_SIZE
));
2330 response
= kzalloc(resp_size
, GFP_KERNEL
);
2331 if (response
== NULL
) {
2337 /* Descriptor Format Sense Data */
2338 response
[0] = DESC_FORMAT_SENSE_DATA
;
2339 response
[1] = NO_SENSE
;
2340 /* TODO How is LOW POWER CONDITION ON handled? (byte 2) */
2341 response
[2] = SCSI_ASC_NO_SENSE
;
2342 response
[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
2343 /* SDAT_OVFL = 0 | Additional Sense Length = 0 */
2345 /* Fixed Format Sense Data */
2346 response
[0] = FIXED_SENSE_DATA
;
2347 /* Byte 1 = Obsolete */
2348 response
[2] = NO_SENSE
; /* FM, EOM, ILI, SDAT_OVFL = 0 */
2349 /* Bytes 3-6 - Information - set to zero */
2350 response
[7] = FIXED_SENSE_DATA_ADD_LENGTH
;
2351 /* Bytes 8-11 - Cmd Specific Information - set to zero */
2352 response
[12] = SCSI_ASC_NO_SENSE
;
2353 response
[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE
;
2354 /* Byte 14 = Field Replaceable Unit Code = 0 */
2355 /* Bytes 15-17 - SKSV=0; Sense Key Specific = 0 */
2358 xfer_len
= min(alloc_len
, resp_size
);
2359 res
= nvme_trans_copy_to_user(hdr
, response
, xfer_len
);
2366 static int nvme_trans_security_protocol(struct nvme_ns
*ns
,
2367 struct sg_io_hdr
*hdr
,
2370 return nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2371 ILLEGAL_REQUEST
, SCSI_ASC_ILLEGAL_COMMAND
,
2372 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2375 static int nvme_trans_start_stop(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2380 struct nvme_command c
;
2381 u8 immed
, pcmod
, pc
, no_flush
, start
;
2383 immed
= cmd
[1] & 0x01;
2384 pcmod
= cmd
[3] & 0x0f;
2385 pc
= (cmd
[4] & 0xf0) >> 4;
2386 no_flush
= cmd
[4] & 0x04;
2387 start
= cmd
[4] & 0x01;
2390 return nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2391 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2392 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2394 if (no_flush
== 0) {
2395 /* Issue NVME FLUSH command prior to START STOP UNIT */
2396 memset(&c
, 0, sizeof(c
));
2397 c
.common
.opcode
= nvme_cmd_flush
;
2398 c
.common
.nsid
= cpu_to_le32(ns
->ns_id
);
2400 nvme_sc
= nvme_submit_sync_cmd(ns
->queue
, &c
);
2401 res
= nvme_trans_status_code(hdr
, nvme_sc
);
2405 /* Setup the expected power state transition */
2406 return nvme_trans_power_state(ns
, hdr
, pc
, pcmod
, start
);
2410 static int nvme_trans_synchronize_cache(struct nvme_ns
*ns
,
2411 struct sg_io_hdr
*hdr
, u8
*cmd
)
2414 struct nvme_command c
;
2416 memset(&c
, 0, sizeof(c
));
2417 c
.common
.opcode
= nvme_cmd_flush
;
2418 c
.common
.nsid
= cpu_to_le32(ns
->ns_id
);
2420 nvme_sc
= nvme_submit_sync_cmd(ns
->queue
, &c
);
2421 return nvme_trans_status_code(hdr
, nvme_sc
);
2424 static int nvme_trans_format_unit(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2428 u8 parm_hdr_len
= 0;
2429 u8 nvme_pf_code
= 0;
2430 u8 format_prot_info
, long_list
, format_data
;
2432 format_prot_info
= (cmd
[1] & 0xc0) >> 6;
2433 long_list
= cmd
[1] & 0x20;
2434 format_data
= cmd
[1] & 0x10;
2436 if (format_data
!= 0) {
2437 if (format_prot_info
!= 0) {
2439 parm_hdr_len
= FORMAT_UNIT_SHORT_PARM_LIST_LEN
;
2441 parm_hdr_len
= FORMAT_UNIT_LONG_PARM_LIST_LEN
;
2443 } else if (format_data
== 0 && format_prot_info
!= 0) {
2444 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2445 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2446 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2450 /* Get parm header from data-in/out buffer */
2452 * According to the translation spec, the only fields in the parameter
2453 * list we are concerned with are in the header. So allocate only that.
2455 if (parm_hdr_len
> 0) {
2456 res
= nvme_trans_fmt_get_parm_header(hdr
, parm_hdr_len
,
2457 format_prot_info
, &nvme_pf_code
);
2462 /* Attempt to activate any previously downloaded firmware image */
2463 res
= nvme_trans_send_activate_fw_cmd(ns
, hdr
, 0);
2465 /* Determine Block size and count and send format command */
2466 res
= nvme_trans_fmt_set_blk_size_count(ns
, hdr
);
2470 res
= nvme_trans_fmt_send_cmd(ns
, hdr
, nvme_pf_code
);
2476 static int nvme_trans_test_unit_ready(struct nvme_ns
*ns
,
2477 struct sg_io_hdr
*hdr
,
2480 struct nvme_dev
*dev
= ns
->dev
;
2482 if (!(readl(&dev
->bar
->csts
) & NVME_CSTS_RDY
))
2483 return nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2484 NOT_READY
, SCSI_ASC_LUN_NOT_READY
,
2485 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2487 return nvme_trans_completion(hdr
, SAM_STAT_GOOD
, NO_SENSE
, 0, 0);
2490 static int nvme_trans_write_buffer(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2494 u32 buffer_offset
, parm_list_length
;
2497 parm_list_length
= get_unaligned_be24(&cmd
[6]);
2498 if (parm_list_length
% BYTES_TO_DWORDS
!= 0) {
2499 /* NVMe expects Firmware file to be a whole number of DWORDS */
2500 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2501 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2502 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2506 if (buffer_id
> NVME_MAX_FIRMWARE_SLOT
) {
2507 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2508 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2509 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2512 mode
= cmd
[1] & 0x1f;
2513 buffer_offset
= get_unaligned_be24(&cmd
[3]);
2516 case DOWNLOAD_SAVE_ACTIVATE
:
2517 res
= nvme_trans_send_download_fw_cmd(ns
, hdr
, nvme_admin_download_fw
,
2518 parm_list_length
, buffer_offset
,
2522 res
= nvme_trans_send_activate_fw_cmd(ns
, hdr
, buffer_id
);
2524 case DOWNLOAD_SAVE_DEFER_ACTIVATE
:
2525 res
= nvme_trans_send_download_fw_cmd(ns
, hdr
, nvme_admin_download_fw
,
2526 parm_list_length
, buffer_offset
,
2529 case ACTIVATE_DEFERRED_MICROCODE
:
2530 res
= nvme_trans_send_activate_fw_cmd(ns
, hdr
, buffer_id
);
2533 res
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2534 ILLEGAL_REQUEST
, SCSI_ASC_INVALID_CDB
,
2535 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2543 struct scsi_unmap_blk_desc
{
2549 struct scsi_unmap_parm_list
{
2550 __be16 unmap_data_len
;
2551 __be16 unmap_blk_desc_data_len
;
2553 struct scsi_unmap_blk_desc desc
[0];
2556 static int nvme_trans_unmap(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
,
2559 struct nvme_dev
*dev
= ns
->dev
;
2560 struct scsi_unmap_parm_list
*plist
;
2561 struct nvme_dsm_range
*range
;
2562 struct nvme_command c
;
2563 int i
, nvme_sc
, res
= -ENOMEM
;
2564 u16 ndesc
, list_len
;
2565 dma_addr_t dma_addr
;
2567 list_len
= get_unaligned_be16(&cmd
[7]);
2571 plist
= kmalloc(list_len
, GFP_KERNEL
);
2575 res
= nvme_trans_copy_from_user(hdr
, plist
, list_len
);
2579 ndesc
= be16_to_cpu(plist
->unmap_blk_desc_data_len
) >> 4;
2580 if (!ndesc
|| ndesc
> 256) {
2585 range
= dma_alloc_coherent(dev
->dev
, ndesc
* sizeof(*range
),
2586 &dma_addr
, GFP_KERNEL
);
2590 for (i
= 0; i
< ndesc
; i
++) {
2591 range
[i
].nlb
= cpu_to_le32(be32_to_cpu(plist
->desc
[i
].nlb
));
2592 range
[i
].slba
= cpu_to_le64(be64_to_cpu(plist
->desc
[i
].slba
));
2596 memset(&c
, 0, sizeof(c
));
2597 c
.dsm
.opcode
= nvme_cmd_dsm
;
2598 c
.dsm
.nsid
= cpu_to_le32(ns
->ns_id
);
2599 c
.dsm
.prp1
= cpu_to_le64(dma_addr
);
2600 c
.dsm
.nr
= cpu_to_le32(ndesc
- 1);
2601 c
.dsm
.attributes
= cpu_to_le32(NVME_DSMGMT_AD
);
2603 nvme_sc
= nvme_submit_sync_cmd(ns
->queue
, &c
);
2604 res
= nvme_trans_status_code(hdr
, nvme_sc
);
2606 dma_free_coherent(dev
->dev
, ndesc
* sizeof(*range
), range
, dma_addr
);
2612 static int nvme_scsi_translate(struct nvme_ns
*ns
, struct sg_io_hdr
*hdr
)
2614 u8 cmd
[BLK_MAX_CDB
];
2616 unsigned int opcode
;
2618 if (hdr
->cmdp
== NULL
)
2620 if (copy_from_user(cmd
, hdr
->cmdp
, hdr
->cmd_len
))
2624 * Prime the hdr with good status for scsi commands that don't require
2625 * an nvme command for translation.
2627 retcode
= nvme_trans_status_code(hdr
, NVME_SC_SUCCESS
);
2638 retcode
= nvme_trans_io(ns
, hdr
, 0, cmd
);
2644 retcode
= nvme_trans_io(ns
, hdr
, 1, cmd
);
2647 retcode
= nvme_trans_inquiry(ns
, hdr
, cmd
);
2650 retcode
= nvme_trans_log_sense(ns
, hdr
, cmd
);
2653 case MODE_SELECT_10
:
2654 retcode
= nvme_trans_mode_select(ns
, hdr
, cmd
);
2658 retcode
= nvme_trans_mode_sense(ns
, hdr
, cmd
);
2661 retcode
= nvme_trans_read_capacity(ns
, hdr
, cmd
, 0);
2663 case SERVICE_ACTION_IN_16
:
2665 case SAI_READ_CAPACITY_16
:
2666 retcode
= nvme_trans_read_capacity(ns
, hdr
, cmd
, 1);
2673 retcode
= nvme_trans_report_luns(ns
, hdr
, cmd
);
2676 retcode
= nvme_trans_request_sense(ns
, hdr
, cmd
);
2678 case SECURITY_PROTOCOL_IN
:
2679 case SECURITY_PROTOCOL_OUT
:
2680 retcode
= nvme_trans_security_protocol(ns
, hdr
, cmd
);
2683 retcode
= nvme_trans_start_stop(ns
, hdr
, cmd
);
2685 case SYNCHRONIZE_CACHE
:
2686 retcode
= nvme_trans_synchronize_cache(ns
, hdr
, cmd
);
2689 retcode
= nvme_trans_format_unit(ns
, hdr
, cmd
);
2691 case TEST_UNIT_READY
:
2692 retcode
= nvme_trans_test_unit_ready(ns
, hdr
, cmd
);
2695 retcode
= nvme_trans_write_buffer(ns
, hdr
, cmd
);
2698 retcode
= nvme_trans_unmap(ns
, hdr
, cmd
);
2702 retcode
= nvme_trans_completion(hdr
, SAM_STAT_CHECK_CONDITION
,
2703 ILLEGAL_REQUEST
, SCSI_ASC_ILLEGAL_COMMAND
,
2704 SCSI_ASCQ_CAUSE_NOT_REPORTABLE
);
2710 int nvme_sg_io(struct nvme_ns
*ns
, struct sg_io_hdr __user
*u_hdr
)
2712 struct sg_io_hdr hdr
;
2715 if (!capable(CAP_SYS_ADMIN
))
2717 if (copy_from_user(&hdr
, u_hdr
, sizeof(hdr
)))
2719 if (hdr
.interface_id
!= 'S')
2721 if (hdr
.cmd_len
> BLK_MAX_CDB
)
2725 * A positive return code means a NVMe status, which has been
2726 * translated to sense data.
2728 retcode
= nvme_scsi_translate(ns
, &hdr
);
2731 if (copy_to_user(u_hdr
, &hdr
, sizeof(sg_io_hdr_t
)) > 0)
2736 int nvme_sg_get_version_num(int __user
*ip
)
2738 return put_user(sg_version_num
, ip
);