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20#include <linux/bio.h>
21#include <linux/bitops.h>
22#include <linux/blkdev.h>
23#include <linux/compat.h>
24#include <linux/delay.h>
25#include <linux/errno.h>
26#include <linux/fs.h>
27#include <linux/genhd.h>
28#include <linux/idr.h>
29#include <linux/init.h>
30#include <linux/interrupt.h>
31#include <linux/io.h>
32#include <linux/kdev_t.h>
33#include <linux/kthread.h>
34#include <linux/kernel.h>
35#include <linux/mm.h>
36#include <linux/module.h>
37#include <linux/moduleparam.h>
38#include <linux/pci.h>
39#include <linux/poison.h>
40#include <linux/sched.h>
41#include <linux/slab.h>
42#include <linux/types.h>
43#include <asm/unaligned.h>
44#include <scsi/sg.h>
45#include <scsi/scsi.h>
46
47#include "nvme.h"
48
49static int sg_version_num = 30534;
50
51
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
58
59
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
65
66
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
92
93
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
109
110
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
151
152
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
168
169
170#define READ_CAP_10_RESP_SIZE 8
171#define READ_CAP_16_RESP_SIZE 32
172
173
174#define BYTES_TO_DWORDS 4
175#define NVME_MAX_FIRMWARE_SLOT 7
176
177
178#define REPORT_LUNS_FIRST_LUN_OFFSET 8
179
180
181
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
199
200
201
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
210
211
212static inline u32 get_unaligned_be24(u8 *buf)
213{
214 return 0xffffff & (u32) get_unaligned_be32(buf - 1);
215}
216
217
218
219
220struct nvme_trans_io_cdb {
221 u8 fua;
222 u8 prot_info;
223 u64 lba;
224 u32 xfer_len;
225};
226
227
228
229
230
231
232
233static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from,
234 unsigned long n)
235{
236 int i;
237 void *index = from;
238 size_t remaining = n;
239 size_t xfer_len;
240
241 if (hdr->iovec_count > 0) {
242 struct sg_iovec sgl;
243
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)))
248 return -EFAULT;
249 xfer_len = min(remaining, sgl.iov_len);
250 if (copy_to_user(sgl.iov_base, index, xfer_len))
251 return -EFAULT;
252
253 index += xfer_len;
254 remaining -= xfer_len;
255 if (remaining == 0)
256 break;
257 }
258 return 0;
259 }
260
261 if (copy_to_user(hdr->dxferp, from, n))
262 return -EFAULT;
263 return 0;
264}
265
266
267
268static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to,
269 unsigned long n)
270{
271 int i;
272 void *index = to;
273 size_t remaining = n;
274 size_t xfer_len;
275
276 if (hdr->iovec_count > 0) {
277 struct sg_iovec sgl;
278
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)))
283 return -EFAULT;
284 xfer_len = min(remaining, sgl.iov_len);
285 if (copy_from_user(index, sgl.iov_base, xfer_len))
286 return -EFAULT;
287 index += xfer_len;
288 remaining -= xfer_len;
289 if (remaining == 0)
290 break;
291 }
292 return 0;
293 }
294
295 if (copy_from_user(to, hdr->dxferp, n))
296 return -EFAULT;
297 return 0;
298}
299
300
301
302static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key,
303 u8 asc, u8 ascq)
304{
305 u8 xfer_len;
306 u8 resp[DESC_FMT_SENSE_DATA_SIZE];
307
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;
313 hdr->sb_len_wr = 0;
314 } else {
315 hdr->status = status;
316 hdr->masked_status = status >> 1;
317 hdr->host_status = DID_OK;
318 hdr->driver_status = DRIVER_OK;
319
320 memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE);
321 resp[0] = DESC_FORMAT_SENSE_DATA;
322 resp[1] = sense_key;
323 resp[2] = asc;
324 resp[3] = ascq;
325
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)
329 return -EFAULT;
330 }
331
332 return 0;
333}
334
335
336
337
338
339
340
341static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc)
342{
343 u8 status, sense_key, asc, ascq;
344 int res;
345
346
347 if (nvme_sc < 0)
348 return nvme_sc;
349
350
351 switch (nvme_sc & 0x7FF) {
352
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;
358 break;
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;
364 break;
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;
370 break;
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;
376 break;
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;
382 break;
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;
388 break;
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;
394 break;
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;
400 break;
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;
406 break;
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;
412 break;
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;
418 break;
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;
424 break;
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;
430 break;
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;
436 break;
437
438
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;
444 break;
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;
450 break;
451
452
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;
458 break;
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;
464 break;
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;
470 break;
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;
476 break;
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;
482 break;
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;
488 break;
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;
494 break;
495
496
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:
509 default:
510 status = SAM_STAT_CHECK_CONDITION;
511 sense_key = ILLEGAL_REQUEST;
512 asc = SCSI_ASC_NO_SENSE;
513 ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
514 break;
515 }
516
517 res = nvme_trans_completion(hdr, status, sense_key, asc, ascq);
518 return res ? res : nvme_sc;
519}
520
521
522
523static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns,
524 struct sg_io_hdr *hdr, u8 *inq_response,
525 int alloc_len)
526{
527 struct nvme_ctrl *ctrl = ns->ctrl;
528 struct nvme_id_ns *id_ns;
529 int res;
530 int nvme_sc;
531 int xfer_len;
532 u8 resp_data_format = 0x02;
533 u8 protect;
534 u8 cmdque = 0x01 << 1;
535 u8 fw_offset = sizeof(ctrl->firmware_rev);
536
537
538 nvme_sc = nvme_identify_ns(ctrl, ns->ns_id, &id_ns);
539 res = nvme_trans_status_code(hdr, nvme_sc);
540 if (res)
541 return res;
542
543 if (id_ns->dps)
544 protect = 0x01;
545 else
546 protect = 0;
547 kfree(id_ns);
548
549 memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
550 inq_response[2] = VERSION_SPC_4;
551 inq_response[3] = resp_data_format;
552 inq_response[4] = ADDITIONAL_STD_INQ_LENGTH;
553 inq_response[5] = protect;
554 inq_response[7] = cmdque;
555 strncpy(&inq_response[8], "NVMe ", 8);
556 strncpy(&inq_response[16], ctrl->model, 16);
557
558 while (ctrl->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4)
559 fw_offset--;
560 fw_offset -= 4;
561 strncpy(&inq_response[32], ctrl->firmware_rev + fw_offset, 4);
562
563 xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
564 return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
565}
566
567static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns,
568 struct sg_io_hdr *hdr, u8 *inq_response,
569 int alloc_len)
570{
571 int xfer_len;
572
573 memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
574 inq_response[1] = INQ_SUPPORTED_VPD_PAGES_PAGE;
575 inq_response[3] = INQ_NUM_SUPPORTED_VPD_PAGES;
576 inq_response[4] = INQ_SUPPORTED_VPD_PAGES_PAGE;
577 inq_response[5] = INQ_UNIT_SERIAL_NUMBER_PAGE;
578 inq_response[6] = INQ_DEVICE_IDENTIFICATION_PAGE;
579 inq_response[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE;
580 inq_response[8] = INQ_BDEV_CHARACTERISTICS_PAGE;
581 inq_response[9] = INQ_BDEV_LIMITS_PAGE;
582
583 xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
584 return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
585}
586
587static int nvme_trans_unit_serial_page(struct nvme_ns *ns,
588 struct sg_io_hdr *hdr, u8 *inq_response,
589 int alloc_len)
590{
591 int xfer_len;
592
593 memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
594 inq_response[1] = INQ_UNIT_SERIAL_NUMBER_PAGE;
595 inq_response[3] = INQ_SERIAL_NUMBER_LENGTH;
596 strncpy(&inq_response[4], ns->ctrl->serial, INQ_SERIAL_NUMBER_LENGTH);
597
598 xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
599 return nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
600}
601
602static int nvme_fill_device_id_eui64(struct nvme_ns *ns, struct sg_io_hdr *hdr,
603 u8 *inq_response, int alloc_len)
604{
605 struct nvme_id_ns *id_ns;
606 int nvme_sc, res;
607 size_t len;
608 void *eui;
609
610 nvme_sc = nvme_identify_ns(ns->ctrl, ns->ns_id, &id_ns);
611 res = nvme_trans_status_code(hdr, nvme_sc);
612 if (res)
613 return res;
614
615 eui = id_ns->eui64;
616 len = sizeof(id_ns->eui64);
617
618 if (ns->ctrl->vs >= NVME_VS(1, 2)) {
619 if (bitmap_empty(eui, len * 8)) {
620 eui = id_ns->nguid;
621 len = sizeof(id_ns->nguid);
622 }
623 }
624
625 if (bitmap_empty(eui, len * 8)) {
626 res = -EOPNOTSUPP;
627 goto out_free_id;
628 }
629
630 memset(inq_response, 0, alloc_len);
631 inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE;
632 inq_response[3] = 4 + len;
633
634
635 inq_response[4] = 0x01;
636 inq_response[5] = 0x02;
637 inq_response[6] = 0x00;
638 inq_response[7] = len;
639 memcpy(&inq_response[8], eui, len);
640
641 res = nvme_trans_copy_to_user(hdr, inq_response, alloc_len);
642out_free_id:
643 kfree(id_ns);
644 return res;
645}
646
647static int nvme_fill_device_id_scsi_string(struct nvme_ns *ns,
648 struct sg_io_hdr *hdr, u8 *inq_response, int alloc_len)
649{
650 struct nvme_ctrl *ctrl = ns->ctrl;
651 struct nvme_id_ctrl *id_ctrl;
652 int nvme_sc, res;
653
654 if (alloc_len < 72) {
655 return nvme_trans_completion(hdr,
656 SAM_STAT_CHECK_CONDITION,
657 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
658 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
659 }
660
661 nvme_sc = nvme_identify_ctrl(ctrl, &id_ctrl);
662 res = nvme_trans_status_code(hdr, nvme_sc);
663 if (res)
664 return res;
665
666 memset(inq_response, 0, alloc_len);
667 inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE;
668 inq_response[3] = 0x48;
669
670
671 inq_response[4] = 0x03;
672 inq_response[5] = 0x08;
673 inq_response[6] = 0x00;
674 inq_response[7] = 0x44;
675
676 sprintf(&inq_response[8], "%04x", le16_to_cpu(id_ctrl->vid));
677 memcpy(&inq_response[12], ctrl->model, sizeof(ctrl->model));
678 sprintf(&inq_response[52], "%04x", cpu_to_be32(ns->ns_id));
679 memcpy(&inq_response[56], ctrl->serial, sizeof(ctrl->serial));
680
681 res = nvme_trans_copy_to_user(hdr, inq_response, alloc_len);
682 kfree(id_ctrl);
683 return res;
684}
685
686static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
687 u8 *resp, int alloc_len)
688{
689 int res;
690
691 if (ns->ctrl->vs >= NVME_VS(1, 1)) {
692 res = nvme_fill_device_id_eui64(ns, hdr, resp, alloc_len);
693 if (res != -EOPNOTSUPP)
694 return res;
695 }
696
697 return nvme_fill_device_id_scsi_string(ns, hdr, resp, alloc_len);
698}
699
700static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
701 int alloc_len)
702{
703 u8 *inq_response;
704 int res;
705 int nvme_sc;
706 struct nvme_ctrl *ctrl = ns->ctrl;
707 struct nvme_id_ctrl *id_ctrl;
708 struct nvme_id_ns *id_ns;
709 int xfer_len;
710 u8 microcode = 0x80;
711 u8 spt;
712 u8 spt_lut[8] = {0, 0, 2, 1, 4, 6, 5, 7};
713 u8 grd_chk, app_chk, ref_chk, protect;
714 u8 uask_sup = 0x20;
715 u8 v_sup;
716 u8 luiclr = 0x01;
717
718 inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
719 if (inq_response == NULL)
720 return -ENOMEM;
721
722 nvme_sc = nvme_identify_ns(ctrl, ns->ns_id, &id_ns);
723 res = nvme_trans_status_code(hdr, nvme_sc);
724 if (res)
725 goto out_free_inq;
726
727 spt = spt_lut[id_ns->dpc & 0x07] << 3;
728 if (id_ns->dps)
729 protect = 0x01;
730 else
731 protect = 0;
732 kfree(id_ns);
733
734 grd_chk = protect << 2;
735 app_chk = protect << 1;
736 ref_chk = protect;
737
738 nvme_sc = nvme_identify_ctrl(ctrl, &id_ctrl);
739 res = nvme_trans_status_code(hdr, nvme_sc);
740 if (res)
741 goto out_free_inq;
742
743 v_sup = id_ctrl->vwc;
744 kfree(id_ctrl);
745
746 memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
747 inq_response[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE;
748 inq_response[2] = 0x00;
749 inq_response[3] = 0x3C;
750 inq_response[4] = microcode | spt | grd_chk | app_chk | ref_chk;
751 inq_response[5] = uask_sup;
752 inq_response[6] = v_sup;
753 inq_response[7] = luiclr;
754 inq_response[8] = 0;
755 inq_response[9] = 0;
756
757 xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
758 res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
759
760 out_free_inq:
761 kfree(inq_response);
762 return res;
763}
764
765static int nvme_trans_bdev_limits_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
766 u8 *inq_response, int alloc_len)
767{
768 __be32 max_sectors = cpu_to_be32(
769 nvme_block_nr(ns, queue_max_hw_sectors(ns->queue)));
770 __be32 max_discard = cpu_to_be32(ns->queue->limits.max_discard_sectors);
771 __be32 discard_desc_count = cpu_to_be32(0x100);
772
773 memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
774 inq_response[1] = VPD_BLOCK_LIMITS;
775 inq_response[3] = 0x3c;
776 memcpy(&inq_response[8], &max_sectors, sizeof(u32));
777 memcpy(&inq_response[20], &max_discard, sizeof(u32));
778
779 if (max_discard)
780 memcpy(&inq_response[24], &discard_desc_count, sizeof(u32));
781
782 return nvme_trans_copy_to_user(hdr, inq_response, 0x3c);
783}
784
785static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
786 int alloc_len)
787{
788 u8 *inq_response;
789 int res;
790 int xfer_len;
791
792 inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
793 if (inq_response == NULL) {
794 res = -ENOMEM;
795 goto out_mem;
796 }
797
798 inq_response[1] = INQ_BDEV_CHARACTERISTICS_PAGE;
799 inq_response[2] = 0x00;
800 inq_response[3] = 0x3C;
801 inq_response[4] = 0x00;
802 inq_response[5] = 0x01;
803 inq_response[6] = 0x00;
804
805 xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
806 res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
807
808 kfree(inq_response);
809 out_mem:
810 return res;
811}
812
813
814
815static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
816 int alloc_len)
817{
818 int res;
819 int xfer_len;
820 u8 *log_response;
821
822 log_response = kzalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH, GFP_KERNEL);
823 if (log_response == NULL) {
824 res = -ENOMEM;
825 goto out_mem;
826 }
827
828 log_response[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
829
830 log_response[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH;
831 log_response[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
832 log_response[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
833 log_response[6] = LOG_PAGE_TEMPERATURE_PAGE;
834
835 xfer_len = min(alloc_len, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH);
836 res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
837
838 kfree(log_response);
839 out_mem:
840 return res;
841}
842
843static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
844 struct sg_io_hdr *hdr, int alloc_len)
845{
846 int res;
847 int xfer_len;
848 u8 *log_response;
849 struct nvme_smart_log *smart_log;
850 u8 temp_c;
851 u16 temp_k;
852
853 log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL);
854 if (log_response == NULL)
855 return -ENOMEM;
856
857 res = nvme_get_log_page(ns->ctrl, &smart_log);
858 if (res < 0)
859 goto out_free_response;
860
861 if (res != NVME_SC_SUCCESS) {
862 temp_c = LOG_TEMP_UNKNOWN;
863 } else {
864 temp_k = (smart_log->temperature[1] << 8) +
865 (smart_log->temperature[0]);
866 temp_c = temp_k - KELVIN_TEMP_FACTOR;
867 }
868 kfree(smart_log);
869
870 log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
871
872 log_response[3] = REMAINING_INFO_EXCP_PAGE_LENGTH;
873
874
875 log_response[6] = 0x23;
876 log_response[7] = 0x04;
877
878
879 log_response[10] = temp_c;
880
881 xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH);
882 res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
883
884 out_free_response:
885 kfree(log_response);
886 return res;
887}
888
889static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
890 int alloc_len)
891{
892 int res;
893 int xfer_len;
894 u8 *log_response;
895 struct nvme_smart_log *smart_log;
896 u32 feature_resp;
897 u8 temp_c_cur, temp_c_thresh;
898 u16 temp_k;
899
900 log_response = kzalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL);
901 if (log_response == NULL)
902 return -ENOMEM;
903
904 res = nvme_get_log_page(ns->ctrl, &smart_log);
905 if (res < 0)
906 goto out_free_response;
907
908 if (res != NVME_SC_SUCCESS) {
909 temp_c_cur = LOG_TEMP_UNKNOWN;
910 } else {
911 temp_k = (smart_log->temperature[1] << 8) +
912 (smart_log->temperature[0]);
913 temp_c_cur = temp_k - KELVIN_TEMP_FACTOR;
914 }
915 kfree(smart_log);
916
917
918 res = nvme_get_features(ns->ctrl, NVME_FEAT_TEMP_THRESH, 0, 0,
919 &feature_resp);
920 if (res != NVME_SC_SUCCESS)
921 temp_c_thresh = LOG_TEMP_UNKNOWN;
922 else
923 temp_c_thresh = (feature_resp & 0xFFFF) - KELVIN_TEMP_FACTOR;
924
925 log_response[0] = LOG_PAGE_TEMPERATURE_PAGE;
926
927 log_response[3] = REMAINING_TEMP_PAGE_LENGTH;
928
929
930 log_response[6] = 0x01;
931 log_response[7] = 0x02;
932
933 log_response[9] = temp_c_cur;
934
935 log_response[11] = 0x01;
936 log_response[12] = 0x01;
937 log_response[13] = 0x02;
938
939 log_response[15] = temp_c_thresh;
940
941 xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH);
942 res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
943
944 out_free_response:
945 kfree(log_response);
946 return res;
947}
948
949
950
951static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa,
952 u16 mode_data_length, u16 blk_desc_len)
953{
954
955 if ((cdb10 && len < 8) || (!cdb10 && len < 4))
956 return -EINVAL;
957
958 if (cdb10) {
959 resp[0] = (mode_data_length & 0xFF00) >> 8;
960 resp[1] = (mode_data_length & 0x00FF);
961 resp[3] = 0x10 ;
962 resp[4] = llbaa;
963 resp[5] = RESERVED_FIELD;
964 resp[6] = (blk_desc_len & 0xFF00) >> 8;
965 resp[7] = (blk_desc_len & 0x00FF);
966 } else {
967 resp[0] = (mode_data_length & 0x00FF);
968 resp[2] = 0x10 ;
969 resp[3] = (blk_desc_len & 0x00FF);
970 }
971
972 return 0;
973}
974
975static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr,
976 u8 *resp, int len, u8 llbaa)
977{
978 int res;
979 int nvme_sc;
980 struct nvme_id_ns *id_ns;
981 u8 flbas;
982 u32 lba_length;
983
984 if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN)
985 return -EINVAL;
986 else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN)
987 return -EINVAL;
988
989 nvme_sc = nvme_identify_ns(ns->ctrl, ns->ns_id, &id_ns);
990 res = nvme_trans_status_code(hdr, nvme_sc);
991 if (res)
992 return res;
993
994 flbas = (id_ns->flbas) & 0x0F;
995 lba_length = (1 << (id_ns->lbaf[flbas].ds));
996
997 if (llbaa == 0) {
998 __be32 tmp_cap = cpu_to_be32(le64_to_cpu(id_ns->ncap));
999
1000 __be32 tmp_len = cpu_to_be32(lba_length & 0x00FFFFFF);
1001
1002 memcpy(resp, &tmp_cap, sizeof(u32));
1003 memcpy(&resp[4], &tmp_len, sizeof(u32));
1004 } else {
1005 __be64 tmp_cap = cpu_to_be64(le64_to_cpu(id_ns->ncap));
1006 __be32 tmp_len = cpu_to_be32(lba_length);
1007
1008 memcpy(resp, &tmp_cap, sizeof(u64));
1009
1010 memcpy(&resp[12], &tmp_len, sizeof(u32));
1011 }
1012
1013 kfree(id_ns);
1014 return res;
1015}
1016
1017static int nvme_trans_fill_control_page(struct nvme_ns *ns,
1018 struct sg_io_hdr *hdr, u8 *resp,
1019 int len)
1020{
1021 if (len < MODE_PAGE_CONTROL_LEN)
1022 return -EINVAL;
1023
1024 resp[0] = MODE_PAGE_CONTROL;
1025 resp[1] = MODE_PAGE_CONTROL_LEN_FIELD;
1026 resp[2] = 0x0E;
1027
1028 resp[3] = 0x12;
1029
1030 resp[5] = 0x40;
1031
1032 resp[8] = 0xFF;
1033 resp[9] = 0xFF;
1034
1035
1036 return 0;
1037}
1038
1039static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
1040 struct sg_io_hdr *hdr,
1041 u8 *resp, int len)
1042{
1043 int res = 0;
1044 int nvme_sc;
1045 u32 feature_resp;
1046 u8 vwc;
1047
1048 if (len < MODE_PAGE_CACHING_LEN)
1049 return -EINVAL;
1050
1051 nvme_sc = nvme_get_features(ns->ctrl, NVME_FEAT_VOLATILE_WC, 0, 0,
1052 &feature_resp);
1053 res = nvme_trans_status_code(hdr, nvme_sc);
1054 if (res)
1055 return res;
1056
1057 vwc = feature_resp & 0x00000001;
1058
1059 resp[0] = MODE_PAGE_CACHING;
1060 resp[1] = MODE_PAGE_CACHING_LEN_FIELD;
1061 resp[2] = vwc << 2;
1062 return 0;
1063}
1064
1065static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns,
1066 struct sg_io_hdr *hdr, u8 *resp,
1067 int len)
1068{
1069 if (len < MODE_PAGE_POW_CND_LEN)
1070 return -EINVAL;
1071
1072 resp[0] = MODE_PAGE_POWER_CONDITION;
1073 resp[1] = MODE_PAGE_POW_CND_LEN_FIELD;
1074
1075
1076 return 0;
1077}
1078
1079static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns,
1080 struct sg_io_hdr *hdr, u8 *resp,
1081 int len)
1082{
1083 if (len < MODE_PAGE_INF_EXC_LEN)
1084 return -EINVAL;
1085
1086 resp[0] = MODE_PAGE_INFO_EXCEP;
1087 resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD;
1088 resp[2] = 0x88;
1089
1090
1091 return 0;
1092}
1093
1094static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1095 u8 *resp, int len)
1096{
1097 int res;
1098 u16 mode_pages_offset_1 = 0;
1099 u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4;
1100
1101 mode_pages_offset_2 = mode_pages_offset_1 + MODE_PAGE_CACHING_LEN;
1102 mode_pages_offset_3 = mode_pages_offset_2 + MODE_PAGE_CONTROL_LEN;
1103 mode_pages_offset_4 = mode_pages_offset_3 + MODE_PAGE_POW_CND_LEN;
1104
1105 res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1],
1106 MODE_PAGE_CACHING_LEN);
1107 if (res)
1108 return res;
1109 res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2],
1110 MODE_PAGE_CONTROL_LEN);
1111 if (res)
1112 return res;
1113 res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3],
1114 MODE_PAGE_POW_CND_LEN);
1115 if (res)
1116 return res;
1117 return nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
1118 MODE_PAGE_INF_EXC_LEN);
1119}
1120
1121static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa)
1122{
1123 if (dbd == MODE_SENSE_BLK_DESC_ENABLED) {
1124
1125 return 8 * (llbaa + 1) * MODE_SENSE_BLK_DESC_COUNT;
1126 } else {
1127 return 0;
1128 }
1129}
1130
1131static int nvme_trans_mode_page_create(struct nvme_ns *ns,
1132 struct sg_io_hdr *hdr, u8 *cmd,
1133 u16 alloc_len, u8 cdb10,
1134 int (*mode_page_fill_func)
1135 (struct nvme_ns *,
1136 struct sg_io_hdr *hdr, u8 *, int),
1137 u16 mode_pages_tot_len)
1138{
1139 int res;
1140 int xfer_len;
1141 u8 *response;
1142 u8 dbd, llbaa;
1143 u16 resp_size;
1144 int mph_size;
1145 u16 mode_pages_offset_1;
1146 u16 blk_desc_len, blk_desc_offset, mode_data_length;
1147
1148 dbd = (cmd[1] & MODE_SENSE_DBD_MASK) >> MODE_SENSE_DBD_SHIFT;
1149 llbaa = (cmd[1] & MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT;
1150 mph_size = cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE;
1151
1152 blk_desc_len = nvme_trans_get_blk_desc_len(dbd, llbaa);
1153
1154 resp_size = mph_size + blk_desc_len + mode_pages_tot_len;
1155
1156 mode_data_length = 3 + (3 * cdb10) + blk_desc_len + mode_pages_tot_len;
1157
1158 blk_desc_offset = mph_size;
1159 mode_pages_offset_1 = blk_desc_offset + blk_desc_len;
1160
1161 response = kzalloc(resp_size, GFP_KERNEL);
1162 if (response == NULL) {
1163 res = -ENOMEM;
1164 goto out_mem;
1165 }
1166
1167 res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10,
1168 llbaa, mode_data_length, blk_desc_len);
1169 if (res)
1170 goto out_free;
1171 if (blk_desc_len > 0) {
1172 res = nvme_trans_fill_blk_desc(ns, hdr,
1173 &response[blk_desc_offset],
1174 blk_desc_len, llbaa);
1175 if (res)
1176 goto out_free;
1177 }
1178 res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1],
1179 mode_pages_tot_len);
1180 if (res)
1181 goto out_free;
1182
1183 xfer_len = min(alloc_len, resp_size);
1184 res = nvme_trans_copy_to_user(hdr, response, xfer_len);
1185
1186 out_free:
1187 kfree(response);
1188 out_mem:
1189 return res;
1190}
1191
1192
1193
1194static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns,
1195 u8 cdb16)
1196{
1197 u8 flbas;
1198 u32 lba_length;
1199 u64 rlba;
1200 u8 prot_en;
1201 u8 p_type_lut[4] = {0, 0, 1, 2};
1202 __be64 tmp_rlba;
1203 __be32 tmp_rlba_32;
1204 __be32 tmp_len;
1205
1206 flbas = (id_ns->flbas) & 0x0F;
1207 lba_length = (1 << (id_ns->lbaf[flbas].ds));
1208 rlba = le64_to_cpup(&id_ns->nsze) - 1;
1209 (id_ns->dps) ? (prot_en = 0x01) : (prot_en = 0);
1210
1211 if (!cdb16) {
1212 if (rlba > 0xFFFFFFFF)
1213 rlba = 0xFFFFFFFF;
1214 tmp_rlba_32 = cpu_to_be32(rlba);
1215 tmp_len = cpu_to_be32(lba_length);
1216 memcpy(response, &tmp_rlba_32, sizeof(u32));
1217 memcpy(&response[4], &tmp_len, sizeof(u32));
1218 } else {
1219 tmp_rlba = cpu_to_be64(rlba);
1220 tmp_len = cpu_to_be32(lba_length);
1221 memcpy(response, &tmp_rlba, sizeof(u64));
1222 memcpy(&response[8], &tmp_len, sizeof(u32));
1223 response[12] = (p_type_lut[id_ns->dps & 0x3] << 1) | prot_en;
1224
1225
1226
1227 }
1228}
1229
1230
1231
1232static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1233 u8 pc, u8 pcmod, u8 start)
1234{
1235 int res;
1236 int nvme_sc;
1237 struct nvme_id_ctrl *id_ctrl;
1238 int lowest_pow_st;
1239 unsigned ps_desired = 0;
1240
1241 nvme_sc = nvme_identify_ctrl(ns->ctrl, &id_ctrl);
1242 res = nvme_trans_status_code(hdr, nvme_sc);
1243 if (res)
1244 return res;
1245
1246 lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
1247 kfree(id_ctrl);
1248
1249 switch (pc) {
1250 case NVME_POWER_STATE_START_VALID:
1251
1252 if (pcmod == 0 && start == 0x1)
1253 ps_desired = POWER_STATE_0;
1254 if (pcmod == 0 && start == 0x0)
1255 ps_desired = lowest_pow_st;
1256 break;
1257 case NVME_POWER_STATE_ACTIVE:
1258
1259 if (pcmod == 0)
1260 ps_desired = POWER_STATE_0;
1261 break;
1262 case NVME_POWER_STATE_IDLE:
1263
1264 if (pcmod == 0x0)
1265 ps_desired = POWER_STATE_1;
1266 else if (pcmod == 0x1)
1267 ps_desired = POWER_STATE_2;
1268 else if (pcmod == 0x2)
1269 ps_desired = POWER_STATE_3;
1270 break;
1271 case NVME_POWER_STATE_STANDBY:
1272
1273 if (pcmod == 0x0)
1274 ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2));
1275 else if (pcmod == 0x1)
1276 ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1));
1277 break;
1278 case NVME_POWER_STATE_LU_CONTROL:
1279 default:
1280 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1281 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1282 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1283 break;
1284 }
1285 nvme_sc = nvme_set_features(ns->ctrl, NVME_FEAT_POWER_MGMT, ps_desired, 0,
1286 NULL);
1287 return nvme_trans_status_code(hdr, nvme_sc);
1288}
1289
1290static int nvme_trans_send_activate_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1291 u8 buffer_id)
1292{
1293 struct nvme_command c;
1294 int nvme_sc;
1295
1296 memset(&c, 0, sizeof(c));
1297 c.common.opcode = nvme_admin_activate_fw;
1298 c.common.cdw10[0] = cpu_to_le32(buffer_id | NVME_FWACT_REPL_ACTV);
1299
1300 nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, NULL, 0);
1301 return nvme_trans_status_code(hdr, nvme_sc);
1302}
1303
1304static int nvme_trans_send_download_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1305 u8 opcode, u32 tot_len, u32 offset,
1306 u8 buffer_id)
1307{
1308 int nvme_sc;
1309 struct nvme_command c;
1310
1311 if (hdr->iovec_count > 0) {
1312
1313 return nvme_trans_completion(hdr,
1314 SAM_STAT_CHECK_CONDITION,
1315 ILLEGAL_REQUEST,
1316 SCSI_ASC_INVALID_CDB,
1317 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1318 }
1319
1320 memset(&c, 0, sizeof(c));
1321 c.common.opcode = nvme_admin_download_fw;
1322 c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1);
1323 c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS);
1324
1325 nvme_sc = nvme_submit_user_cmd(ns->ctrl->admin_q, &c,
1326 hdr->dxferp, tot_len, NULL, 0);
1327 return nvme_trans_status_code(hdr, nvme_sc);
1328}
1329
1330
1331
1332static inline void nvme_trans_modesel_get_bd_len(u8 *parm_list, u8 cdb10,
1333 u16 *bd_len, u8 *llbaa)
1334{
1335 if (cdb10) {
1336
1337 *bd_len = (parm_list[MODE_SELECT_10_BD_OFFSET] << 8) +
1338 parm_list[MODE_SELECT_10_BD_OFFSET + 1];
1339 *llbaa = parm_list[MODE_SELECT_10_LLBAA_OFFSET] &
1340 MODE_SELECT_10_LLBAA_MASK;
1341 } else {
1342
1343 *bd_len = parm_list[MODE_SELECT_6_BD_OFFSET];
1344 }
1345}
1346
1347static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list,
1348 u16 idx, u16 bd_len, u8 llbaa)
1349{
1350 u16 bd_num;
1351
1352 bd_num = bd_len / ((llbaa == 0) ?
1353 SHORT_DESC_BLOCK : LONG_DESC_BLOCK);
1354
1355
1356 if (llbaa == 0) {
1357
1358 ns->mode_select_num_blocks =
1359 (parm_list[idx + 1] << 16) +
1360 (parm_list[idx + 2] << 8) +
1361 (parm_list[idx + 3]);
1362
1363 ns->mode_select_block_len =
1364 (parm_list[idx + 5] << 16) +
1365 (parm_list[idx + 6] << 8) +
1366 (parm_list[idx + 7]);
1367 } else {
1368
1369 ns->mode_select_num_blocks =
1370 (((u64)parm_list[idx + 0]) << 56) +
1371 (((u64)parm_list[idx + 1]) << 48) +
1372 (((u64)parm_list[idx + 2]) << 40) +
1373 (((u64)parm_list[idx + 3]) << 32) +
1374 (((u64)parm_list[idx + 4]) << 24) +
1375 (((u64)parm_list[idx + 5]) << 16) +
1376 (((u64)parm_list[idx + 6]) << 8) +
1377 ((u64)parm_list[idx + 7]);
1378
1379 ns->mode_select_block_len =
1380 (parm_list[idx + 12] << 24) +
1381 (parm_list[idx + 13] << 16) +
1382 (parm_list[idx + 14] << 8) +
1383 (parm_list[idx + 15]);
1384 }
1385}
1386
1387static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1388 u8 *mode_page, u8 page_code)
1389{
1390 int res = 0;
1391 int nvme_sc;
1392 unsigned dword11;
1393
1394 switch (page_code) {
1395 case MODE_PAGE_CACHING:
1396 dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0);
1397 nvme_sc = nvme_set_features(ns->ctrl, NVME_FEAT_VOLATILE_WC,
1398 dword11, 0, NULL);
1399 res = nvme_trans_status_code(hdr, nvme_sc);
1400 break;
1401 case MODE_PAGE_CONTROL:
1402 break;
1403 case MODE_PAGE_POWER_CONDITION:
1404
1405 if ((mode_page[2] & 0x01) != 0 || (mode_page[3] & 0x0F) != 0) {
1406 res = nvme_trans_completion(hdr,
1407 SAM_STAT_CHECK_CONDITION,
1408 ILLEGAL_REQUEST,
1409 SCSI_ASC_INVALID_PARAMETER,
1410 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1411 break;
1412 }
1413 break;
1414 default:
1415 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1416 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1417 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1418 break;
1419 }
1420
1421 return res;
1422}
1423
1424static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1425 u8 *cmd, u16 parm_list_len, u8 pf,
1426 u8 sp, u8 cdb10)
1427{
1428 int res;
1429 u8 *parm_list;
1430 u16 bd_len;
1431 u8 llbaa = 0;
1432 u16 index, saved_index;
1433 u8 page_code;
1434 u16 mp_size;
1435
1436
1437 parm_list = kmalloc(parm_list_len, GFP_KERNEL);
1438 if (parm_list == NULL) {
1439 res = -ENOMEM;
1440 goto out;
1441 }
1442
1443 res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len);
1444 if (res)
1445 goto out_mem;
1446
1447 nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa);
1448 index = (cdb10) ? (MODE_SELECT_10_MPH_SIZE) : (MODE_SELECT_6_MPH_SIZE);
1449
1450 if (bd_len != 0) {
1451
1452 nvme_trans_modesel_save_bd(ns, parm_list, index, bd_len, llbaa);
1453 index += bd_len;
1454 }
1455 saved_index = index;
1456
1457
1458
1459 do {
1460 page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
1461 mp_size = parm_list[index + 1] + 2;
1462 if ((page_code != MODE_PAGE_CACHING) &&
1463 (page_code != MODE_PAGE_CONTROL) &&
1464 (page_code != MODE_PAGE_POWER_CONDITION)) {
1465 res = nvme_trans_completion(hdr,
1466 SAM_STAT_CHECK_CONDITION,
1467 ILLEGAL_REQUEST,
1468 SCSI_ASC_INVALID_CDB,
1469 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1470 goto out_mem;
1471 }
1472 index += mp_size;
1473 } while (index < parm_list_len);
1474
1475
1476 index = saved_index;
1477 do {
1478 page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
1479 mp_size = parm_list[index + 1] + 2;
1480 res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index],
1481 page_code);
1482 if (res)
1483 break;
1484 index += mp_size;
1485 } while (index < parm_list_len);
1486
1487 out_mem:
1488 kfree(parm_list);
1489 out:
1490 return res;
1491}
1492
1493
1494
1495static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns,
1496 struct sg_io_hdr *hdr)
1497{
1498 int res = 0;
1499 int nvme_sc;
1500 u8 flbas;
1501
1502
1503
1504
1505
1506
1507
1508
1509 if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) {
1510 struct nvme_id_ns *id_ns;
1511
1512 nvme_sc = nvme_identify_ns(ns->ctrl, ns->ns_id, &id_ns);
1513 res = nvme_trans_status_code(hdr, nvme_sc);
1514 if (res)
1515 return res;
1516
1517 if (ns->mode_select_num_blocks == 0)
1518 ns->mode_select_num_blocks = le64_to_cpu(id_ns->ncap);
1519 if (ns->mode_select_block_len == 0) {
1520 flbas = (id_ns->flbas) & 0x0F;
1521 ns->mode_select_block_len =
1522 (1 << (id_ns->lbaf[flbas].ds));
1523 }
1524
1525 kfree(id_ns);
1526 }
1527
1528 return 0;
1529}
1530
1531static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len,
1532 u8 format_prot_info, u8 *nvme_pf_code)
1533{
1534 int res;
1535 u8 *parm_list;
1536 u8 pf_usage, pf_code;
1537
1538 parm_list = kmalloc(len, GFP_KERNEL);
1539 if (parm_list == NULL) {
1540 res = -ENOMEM;
1541 goto out;
1542 }
1543 res = nvme_trans_copy_from_user(hdr, parm_list, len);
1544 if (res)
1545 goto out_mem;
1546
1547 if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] &
1548 FORMAT_UNIT_IMMED_MASK) != 0) {
1549 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1550 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1551 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1552 goto out_mem;
1553 }
1554
1555 if (len == FORMAT_UNIT_LONG_PARM_LIST_LEN &&
1556 (parm_list[FORMAT_UNIT_PROT_INT_OFFSET] & 0x0F) != 0) {
1557 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1558 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1559 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1560 goto out_mem;
1561 }
1562 pf_usage = parm_list[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET] &
1563 FORMAT_UNIT_PROT_FIELD_USAGE_MASK;
1564 pf_code = (pf_usage << 2) | format_prot_info;
1565 switch (pf_code) {
1566 case 0:
1567 *nvme_pf_code = 0;
1568 break;
1569 case 2:
1570 *nvme_pf_code = 1;
1571 break;
1572 case 3:
1573 *nvme_pf_code = 2;
1574 break;
1575 case 7:
1576 *nvme_pf_code = 3;
1577 break;
1578 default:
1579 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1580 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1581 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1582 break;
1583 }
1584
1585 out_mem:
1586 kfree(parm_list);
1587 out:
1588 return res;
1589}
1590
1591static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1592 u8 prot_info)
1593{
1594 int res;
1595 int nvme_sc;
1596 struct nvme_id_ns *id_ns;
1597 u8 i;
1598 u8 flbas, nlbaf;
1599 u8 selected_lbaf = 0xFF;
1600 u32 cdw10 = 0;
1601 struct nvme_command c;
1602
1603
1604 nvme_sc = nvme_identify_ns(ns->ctrl, ns->ns_id, &id_ns);
1605 res = nvme_trans_status_code(hdr, nvme_sc);
1606 if (res)
1607 return res;
1608
1609 flbas = (id_ns->flbas) & 0x0F;
1610 nlbaf = id_ns->nlbaf;
1611
1612 for (i = 0; i < nlbaf; i++) {
1613 if (ns->mode_select_block_len == (1 << (id_ns->lbaf[i].ds))) {
1614 selected_lbaf = i;
1615 break;
1616 }
1617 }
1618 if (selected_lbaf > 0x0F) {
1619 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1620 ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
1621 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1622 }
1623 if (ns->mode_select_num_blocks != le64_to_cpu(id_ns->ncap)) {
1624 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1625 ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
1626 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1627 }
1628
1629 cdw10 |= prot_info << 5;
1630 cdw10 |= selected_lbaf & 0x0F;
1631 memset(&c, 0, sizeof(c));
1632 c.format.opcode = nvme_admin_format_nvm;
1633 c.format.nsid = cpu_to_le32(ns->ns_id);
1634 c.format.cdw10 = cpu_to_le32(cdw10);
1635
1636 nvme_sc = nvme_submit_sync_cmd(ns->ctrl->admin_q, &c, NULL, 0);
1637 res = nvme_trans_status_code(hdr, nvme_sc);
1638
1639 kfree(id_ns);
1640 return res;
1641}
1642
1643static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr,
1644 struct nvme_trans_io_cdb *cdb_info,
1645 u32 max_blocks)
1646{
1647
1648 if (hdr->iovec_count > 0)
1649 return hdr->iovec_count;
1650 else if (cdb_info->xfer_len > max_blocks)
1651 return ((cdb_info->xfer_len - 1) / max_blocks) + 1;
1652 else
1653 return 1;
1654}
1655
1656static u16 nvme_trans_io_get_control(struct nvme_ns *ns,
1657 struct nvme_trans_io_cdb *cdb_info)
1658{
1659 u16 control = 0;
1660
1661
1662
1663 if (cdb_info->fua > 0)
1664 control |= NVME_RW_FUA;
1665
1666 return control;
1667}
1668
1669static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1670 struct nvme_trans_io_cdb *cdb_info, u8 is_write)
1671{
1672 int nvme_sc = NVME_SC_SUCCESS;
1673 u32 num_cmds;
1674 u64 unit_len;
1675 u64 unit_num_blocks;
1676 u32 retcode;
1677 u32 i = 0;
1678 u64 nvme_offset = 0;
1679 void __user *next_mapping_addr;
1680 struct nvme_command c;
1681 u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read);
1682 u16 control;
1683 u32 max_blocks = queue_max_hw_sectors(ns->queue);
1684
1685 num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks);
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696 for (i = 0; i < num_cmds; i++) {
1697 memset(&c, 0, sizeof(c));
1698 if (hdr->iovec_count > 0) {
1699 struct sg_iovec sgl;
1700
1701 retcode = copy_from_user(&sgl, hdr->dxferp +
1702 i * sizeof(struct sg_iovec),
1703 sizeof(struct sg_iovec));
1704 if (retcode)
1705 return -EFAULT;
1706 unit_len = sgl.iov_len;
1707 unit_num_blocks = unit_len >> ns->lba_shift;
1708 next_mapping_addr = sgl.iov_base;
1709 } else {
1710 unit_num_blocks = min((u64)max_blocks,
1711 (cdb_info->xfer_len - nvme_offset));
1712 unit_len = unit_num_blocks << ns->lba_shift;
1713 next_mapping_addr = hdr->dxferp +
1714 ((1 << ns->lba_shift) * nvme_offset);
1715 }
1716
1717 c.rw.opcode = opcode;
1718 c.rw.nsid = cpu_to_le32(ns->ns_id);
1719 c.rw.slba = cpu_to_le64(cdb_info->lba + nvme_offset);
1720 c.rw.length = cpu_to_le16(unit_num_blocks - 1);
1721 control = nvme_trans_io_get_control(ns, cdb_info);
1722 c.rw.control = cpu_to_le16(control);
1723
1724 if (get_capacity(ns->disk) - unit_num_blocks <
1725 cdb_info->lba + nvme_offset) {
1726 nvme_sc = NVME_SC_LBA_RANGE;
1727 break;
1728 }
1729 nvme_sc = nvme_submit_user_cmd(ns->queue, &c,
1730 next_mapping_addr, unit_len, NULL, 0);
1731 if (nvme_sc)
1732 break;
1733
1734 nvme_offset += unit_num_blocks;
1735 }
1736
1737 return nvme_trans_status_code(hdr, nvme_sc);
1738}
1739
1740
1741
1742
1743static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write,
1744 u8 *cmd)
1745{
1746 int res = 0;
1747 struct nvme_trans_io_cdb cdb_info = { 0, };
1748 u8 opcode = cmd[0];
1749 u64 xfer_bytes;
1750 u64 sum_iov_len = 0;
1751 struct sg_iovec sgl;
1752 int i;
1753 size_t not_copied;
1754
1755
1756
1757
1758
1759 switch (opcode) {
1760 case WRITE_6:
1761 case READ_6:
1762 break;
1763 default:
1764 cdb_info.fua = cmd[1] & 0x8;
1765 cdb_info.prot_info = (cmd[1] & 0xe0) >> 5;
1766 if (cdb_info.prot_info && !ns->pi_type) {
1767 return nvme_trans_completion(hdr,
1768 SAM_STAT_CHECK_CONDITION,
1769 ILLEGAL_REQUEST,
1770 SCSI_ASC_INVALID_CDB,
1771 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1772 }
1773 }
1774
1775 switch (opcode) {
1776 case WRITE_6:
1777 case READ_6:
1778 cdb_info.lba = get_unaligned_be24(&cmd[1]);
1779 cdb_info.xfer_len = cmd[4];
1780 if (cdb_info.xfer_len == 0)
1781 cdb_info.xfer_len = 256;
1782 break;
1783 case WRITE_10:
1784 case READ_10:
1785 cdb_info.lba = get_unaligned_be32(&cmd[2]);
1786 cdb_info.xfer_len = get_unaligned_be16(&cmd[7]);
1787 break;
1788 case WRITE_12:
1789 case READ_12:
1790 cdb_info.lba = get_unaligned_be32(&cmd[2]);
1791 cdb_info.xfer_len = get_unaligned_be32(&cmd[6]);
1792 break;
1793 case WRITE_16:
1794 case READ_16:
1795 cdb_info.lba = get_unaligned_be64(&cmd[2]);
1796 cdb_info.xfer_len = get_unaligned_be32(&cmd[10]);
1797 break;
1798 default:
1799
1800 res = -EIO;
1801 goto out;
1802 }
1803
1804
1805 if (hdr->iovec_count > 0) {
1806 for (i = 0; i < hdr->iovec_count; i++) {
1807 not_copied = copy_from_user(&sgl, hdr->dxferp +
1808 i * sizeof(struct sg_iovec),
1809 sizeof(struct sg_iovec));
1810 if (not_copied)
1811 return -EFAULT;
1812 sum_iov_len += sgl.iov_len;
1813
1814 if (sgl.iov_len % (1 << ns->lba_shift) != 0) {
1815 res = nvme_trans_completion(hdr,
1816 SAM_STAT_CHECK_CONDITION,
1817 ILLEGAL_REQUEST,
1818 SCSI_ASC_INVALID_PARAMETER,
1819 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1820 goto out;
1821 }
1822 }
1823 } else {
1824 sum_iov_len = hdr->dxfer_len;
1825 }
1826
1827
1828 xfer_bytes = min(((u64)hdr->dxfer_len), sum_iov_len);
1829
1830
1831 if (xfer_bytes != (cdb_info.xfer_len << ns->lba_shift)) {
1832 res = -EINVAL;
1833 goto out;
1834 }
1835
1836
1837 if (cdb_info.xfer_len == 0)
1838 goto out;
1839
1840
1841 res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write);
1842 if (res)
1843 goto out;
1844
1845 out:
1846 return res;
1847}
1848
1849static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1850 u8 *cmd)
1851{
1852 int res = 0;
1853 u8 evpd;
1854 u8 page_code;
1855 int alloc_len;
1856 u8 *inq_response;
1857
1858 evpd = cmd[1] & 0x01;
1859 page_code = cmd[2];
1860 alloc_len = get_unaligned_be16(&cmd[3]);
1861
1862 inq_response = kmalloc(max(alloc_len, STANDARD_INQUIRY_LENGTH),
1863 GFP_KERNEL);
1864 if (inq_response == NULL) {
1865 res = -ENOMEM;
1866 goto out_mem;
1867 }
1868
1869 if (evpd == 0) {
1870 if (page_code == INQ_STANDARD_INQUIRY_PAGE) {
1871 res = nvme_trans_standard_inquiry_page(ns, hdr,
1872 inq_response, alloc_len);
1873 } else {
1874 res = nvme_trans_completion(hdr,
1875 SAM_STAT_CHECK_CONDITION,
1876 ILLEGAL_REQUEST,
1877 SCSI_ASC_INVALID_CDB,
1878 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1879 }
1880 } else {
1881 switch (page_code) {
1882 case VPD_SUPPORTED_PAGES:
1883 res = nvme_trans_supported_vpd_pages(ns, hdr,
1884 inq_response, alloc_len);
1885 break;
1886 case VPD_SERIAL_NUMBER:
1887 res = nvme_trans_unit_serial_page(ns, hdr, inq_response,
1888 alloc_len);
1889 break;
1890 case VPD_DEVICE_IDENTIFIERS:
1891 res = nvme_trans_device_id_page(ns, hdr, inq_response,
1892 alloc_len);
1893 break;
1894 case VPD_EXTENDED_INQUIRY:
1895 res = nvme_trans_ext_inq_page(ns, hdr, alloc_len);
1896 break;
1897 case VPD_BLOCK_LIMITS:
1898 res = nvme_trans_bdev_limits_page(ns, hdr, inq_response,
1899 alloc_len);
1900 break;
1901 case VPD_BLOCK_DEV_CHARACTERISTICS:
1902 res = nvme_trans_bdev_char_page(ns, hdr, alloc_len);
1903 break;
1904 default:
1905 res = nvme_trans_completion(hdr,
1906 SAM_STAT_CHECK_CONDITION,
1907 ILLEGAL_REQUEST,
1908 SCSI_ASC_INVALID_CDB,
1909 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1910 break;
1911 }
1912 }
1913 kfree(inq_response);
1914 out_mem:
1915 return res;
1916}
1917
1918static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1919 u8 *cmd)
1920{
1921 int res;
1922 u16 alloc_len;
1923 u8 pc;
1924 u8 page_code;
1925
1926 if (cmd[1] != LOG_SENSE_CDB_SP_NOT_ENABLED) {
1927 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1928 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1929 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1930 goto out;
1931 }
1932
1933 page_code = cmd[2] & LOG_SENSE_CDB_PAGE_CODE_MASK;
1934 pc = (cmd[2] & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT;
1935 if (pc != LOG_SENSE_CDB_PC_CUMULATIVE_VALUES) {
1936 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1937 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1938 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1939 goto out;
1940 }
1941 alloc_len = get_unaligned_be16(&cmd[7]);
1942 switch (page_code) {
1943 case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE:
1944 res = nvme_trans_log_supp_pages(ns, hdr, alloc_len);
1945 break;
1946 case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE:
1947 res = nvme_trans_log_info_exceptions(ns, hdr, alloc_len);
1948 break;
1949 case LOG_PAGE_TEMPERATURE_PAGE:
1950 res = nvme_trans_log_temperature(ns, hdr, alloc_len);
1951 break;
1952 default:
1953 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
1954 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
1955 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
1956 break;
1957 }
1958
1959 out:
1960 return res;
1961}
1962
1963static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1964 u8 *cmd)
1965{
1966 u8 cdb10 = 0;
1967 u16 parm_list_len;
1968 u8 page_format;
1969 u8 save_pages;
1970
1971 page_format = cmd[1] & MODE_SELECT_CDB_PAGE_FORMAT_MASK;
1972 save_pages = cmd[1] & MODE_SELECT_CDB_SAVE_PAGES_MASK;
1973
1974 if (cmd[0] == MODE_SELECT) {
1975 parm_list_len = cmd[4];
1976 } else {
1977 parm_list_len = cmd[7];
1978 cdb10 = 1;
1979 }
1980
1981 if (parm_list_len != 0) {
1982
1983
1984
1985
1986 return nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
1987 page_format, save_pages, cdb10);
1988 }
1989
1990 return 0;
1991}
1992
1993static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
1994 u8 *cmd)
1995{
1996 int res = 0;
1997 u16 alloc_len;
1998 u8 cdb10 = 0;
1999
2000 if (cmd[0] == MODE_SENSE) {
2001 alloc_len = cmd[4];
2002 } else {
2003 alloc_len = get_unaligned_be16(&cmd[7]);
2004 cdb10 = 1;
2005 }
2006
2007 if ((cmd[2] & MODE_SENSE_PAGE_CONTROL_MASK) !=
2008 MODE_SENSE_PC_CURRENT_VALUES) {
2009 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2010 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2011 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2012 goto out;
2013 }
2014
2015 switch (cmd[2] & MODE_SENSE_PAGE_CODE_MASK) {
2016 case MODE_PAGE_CACHING:
2017 res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
2018 cdb10,
2019 &nvme_trans_fill_caching_page,
2020 MODE_PAGE_CACHING_LEN);
2021 break;
2022 case MODE_PAGE_CONTROL:
2023 res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
2024 cdb10,
2025 &nvme_trans_fill_control_page,
2026 MODE_PAGE_CONTROL_LEN);
2027 break;
2028 case MODE_PAGE_POWER_CONDITION:
2029 res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
2030 cdb10,
2031 &nvme_trans_fill_pow_cnd_page,
2032 MODE_PAGE_POW_CND_LEN);
2033 break;
2034 case MODE_PAGE_INFO_EXCEP:
2035 res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
2036 cdb10,
2037 &nvme_trans_fill_inf_exc_page,
2038 MODE_PAGE_INF_EXC_LEN);
2039 break;
2040 case MODE_PAGE_RETURN_ALL:
2041 res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
2042 cdb10,
2043 &nvme_trans_fill_all_pages,
2044 MODE_PAGE_ALL_LEN);
2045 break;
2046 default:
2047 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2048 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2049 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2050 break;
2051 }
2052
2053 out:
2054 return res;
2055}
2056
2057static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2058 u8 *cmd, u8 cdb16)
2059{
2060 int res;
2061 int nvme_sc;
2062 u32 alloc_len;
2063 u32 resp_size;
2064 u32 xfer_len;
2065 struct nvme_id_ns *id_ns;
2066 u8 *response;
2067
2068 if (cdb16) {
2069 alloc_len = get_unaligned_be32(&cmd[10]);
2070 resp_size = READ_CAP_16_RESP_SIZE;
2071 } else {
2072 alloc_len = READ_CAP_10_RESP_SIZE;
2073 resp_size = READ_CAP_10_RESP_SIZE;
2074 }
2075
2076 nvme_sc = nvme_identify_ns(ns->ctrl, ns->ns_id, &id_ns);
2077 res = nvme_trans_status_code(hdr, nvme_sc);
2078 if (res)
2079 return res;
2080
2081 response = kzalloc(resp_size, GFP_KERNEL);
2082 if (response == NULL) {
2083 res = -ENOMEM;
2084 goto out_free_id;
2085 }
2086 nvme_trans_fill_read_cap(response, id_ns, cdb16);
2087
2088 xfer_len = min(alloc_len, resp_size);
2089 res = nvme_trans_copy_to_user(hdr, response, xfer_len);
2090
2091 kfree(response);
2092 out_free_id:
2093 kfree(id_ns);
2094 return res;
2095}
2096
2097static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2098 u8 *cmd)
2099{
2100 int res;
2101 int nvme_sc;
2102 u32 alloc_len, xfer_len, resp_size;
2103 u8 *response;
2104 struct nvme_id_ctrl *id_ctrl;
2105 u32 ll_length, lun_id;
2106 u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET;
2107 __be32 tmp_len;
2108
2109 switch (cmd[2]) {
2110 default:
2111 return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2112 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2113 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2114 case ALL_LUNS_RETURNED:
2115 case ALL_WELL_KNOWN_LUNS_RETURNED:
2116 case RESTRICTED_LUNS_RETURNED:
2117 nvme_sc = nvme_identify_ctrl(ns->ctrl, &id_ctrl);
2118 res = nvme_trans_status_code(hdr, nvme_sc);
2119 if (res)
2120 return res;
2121
2122 ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE;
2123 resp_size = ll_length + LUN_DATA_HEADER_SIZE;
2124
2125 alloc_len = get_unaligned_be32(&cmd[6]);
2126 if (alloc_len < resp_size) {
2127 res = nvme_trans_completion(hdr,
2128 SAM_STAT_CHECK_CONDITION,
2129 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2130 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2131 goto out_free_id;
2132 }
2133
2134 response = kzalloc(resp_size, GFP_KERNEL);
2135 if (response == NULL) {
2136 res = -ENOMEM;
2137 goto out_free_id;
2138 }
2139
2140
2141 for (lun_id = 0; lun_id < le32_to_cpu(id_ctrl->nn); lun_id++) {
2142
2143
2144
2145
2146 __be64 tmp_id = cpu_to_be64(lun_id);
2147 memcpy(&response[lun_id_offset], &tmp_id, sizeof(u64));
2148 lun_id_offset += LUN_ENTRY_SIZE;
2149 }
2150 tmp_len = cpu_to_be32(ll_length);
2151 memcpy(response, &tmp_len, sizeof(u32));
2152 }
2153
2154 xfer_len = min(alloc_len, resp_size);
2155 res = nvme_trans_copy_to_user(hdr, response, xfer_len);
2156
2157 kfree(response);
2158 out_free_id:
2159 kfree(id_ctrl);
2160 return res;
2161}
2162
2163static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2164 u8 *cmd)
2165{
2166 int res;
2167 u8 alloc_len, xfer_len, resp_size;
2168 u8 desc_format;
2169 u8 *response;
2170
2171 desc_format = cmd[1] & 0x01;
2172 alloc_len = cmd[4];
2173
2174 resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) :
2175 (FIXED_FMT_SENSE_DATA_SIZE));
2176 response = kzalloc(resp_size, GFP_KERNEL);
2177 if (response == NULL) {
2178 res = -ENOMEM;
2179 goto out;
2180 }
2181
2182 if (desc_format) {
2183
2184 response[0] = DESC_FORMAT_SENSE_DATA;
2185 response[1] = NO_SENSE;
2186
2187 response[2] = SCSI_ASC_NO_SENSE;
2188 response[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
2189
2190 } else {
2191
2192 response[0] = FIXED_SENSE_DATA;
2193
2194 response[2] = NO_SENSE;
2195
2196 response[7] = FIXED_SENSE_DATA_ADD_LENGTH;
2197
2198 response[12] = SCSI_ASC_NO_SENSE;
2199 response[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
2200
2201
2202 }
2203
2204 xfer_len = min(alloc_len, resp_size);
2205 res = nvme_trans_copy_to_user(hdr, response, xfer_len);
2206
2207 kfree(response);
2208 out:
2209 return res;
2210}
2211
2212static int nvme_trans_security_protocol(struct nvme_ns *ns,
2213 struct sg_io_hdr *hdr,
2214 u8 *cmd)
2215{
2216 return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2217 ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
2218 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2219}
2220
2221static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
2222 struct sg_io_hdr *hdr)
2223{
2224 int nvme_sc;
2225 struct nvme_command c;
2226
2227 memset(&c, 0, sizeof(c));
2228 c.common.opcode = nvme_cmd_flush;
2229 c.common.nsid = cpu_to_le32(ns->ns_id);
2230
2231 nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, NULL, 0);
2232 return nvme_trans_status_code(hdr, nvme_sc);
2233}
2234
2235static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2236 u8 *cmd)
2237{
2238 u8 immed, pcmod, pc, no_flush, start;
2239
2240 immed = cmd[1] & 0x01;
2241 pcmod = cmd[3] & 0x0f;
2242 pc = (cmd[4] & 0xf0) >> 4;
2243 no_flush = cmd[4] & 0x04;
2244 start = cmd[4] & 0x01;
2245
2246 if (immed != 0) {
2247 return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2248 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2249 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2250 } else {
2251 if (no_flush == 0) {
2252
2253 int res = nvme_trans_synchronize_cache(ns, hdr);
2254 if (res)
2255 return res;
2256 }
2257
2258 return nvme_trans_power_state(ns, hdr, pc, pcmod, start);
2259 }
2260}
2261
2262static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2263 u8 *cmd)
2264{
2265 int res;
2266 u8 parm_hdr_len = 0;
2267 u8 nvme_pf_code = 0;
2268 u8 format_prot_info, long_list, format_data;
2269
2270 format_prot_info = (cmd[1] & 0xc0) >> 6;
2271 long_list = cmd[1] & 0x20;
2272 format_data = cmd[1] & 0x10;
2273
2274 if (format_data != 0) {
2275 if (format_prot_info != 0) {
2276 if (long_list == 0)
2277 parm_hdr_len = FORMAT_UNIT_SHORT_PARM_LIST_LEN;
2278 else
2279 parm_hdr_len = FORMAT_UNIT_LONG_PARM_LIST_LEN;
2280 }
2281 } else if (format_data == 0 && format_prot_info != 0) {
2282 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2283 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2284 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2285 goto out;
2286 }
2287
2288
2289
2290
2291
2292
2293 if (parm_hdr_len > 0) {
2294 res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len,
2295 format_prot_info, &nvme_pf_code);
2296 if (res)
2297 goto out;
2298 }
2299
2300
2301 res = nvme_trans_send_activate_fw_cmd(ns, hdr, 0);
2302
2303
2304 res = nvme_trans_fmt_set_blk_size_count(ns, hdr);
2305 if (res)
2306 goto out;
2307
2308 res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code);
2309
2310 out:
2311 return res;
2312}
2313
2314static int nvme_trans_test_unit_ready(struct nvme_ns *ns,
2315 struct sg_io_hdr *hdr,
2316 u8 *cmd)
2317{
2318 if (nvme_ctrl_ready(ns->ctrl))
2319 return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2320 NOT_READY, SCSI_ASC_LUN_NOT_READY,
2321 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2322 else
2323 return nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
2324}
2325
2326static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2327 u8 *cmd)
2328{
2329 int res = 0;
2330 u32 buffer_offset, parm_list_length;
2331 u8 buffer_id, mode;
2332
2333 parm_list_length = get_unaligned_be24(&cmd[6]);
2334 if (parm_list_length % BYTES_TO_DWORDS != 0) {
2335
2336 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2337 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2338 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2339 goto out;
2340 }
2341 buffer_id = cmd[2];
2342 if (buffer_id > NVME_MAX_FIRMWARE_SLOT) {
2343 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2344 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2345 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2346 goto out;
2347 }
2348 mode = cmd[1] & 0x1f;
2349 buffer_offset = get_unaligned_be24(&cmd[3]);
2350
2351 switch (mode) {
2352 case DOWNLOAD_SAVE_ACTIVATE:
2353 res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw,
2354 parm_list_length, buffer_offset,
2355 buffer_id);
2356 if (res)
2357 goto out;
2358 res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id);
2359 break;
2360 case DOWNLOAD_SAVE_DEFER_ACTIVATE:
2361 res = nvme_trans_send_download_fw_cmd(ns, hdr, nvme_admin_download_fw,
2362 parm_list_length, buffer_offset,
2363 buffer_id);
2364 break;
2365 case ACTIVATE_DEFERRED_MICROCODE:
2366 res = nvme_trans_send_activate_fw_cmd(ns, hdr, buffer_id);
2367 break;
2368 default:
2369 res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2370 ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
2371 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2372 break;
2373 }
2374
2375 out:
2376 return res;
2377}
2378
2379struct scsi_unmap_blk_desc {
2380 __be64 slba;
2381 __be32 nlb;
2382 u32 resv;
2383};
2384
2385struct scsi_unmap_parm_list {
2386 __be16 unmap_data_len;
2387 __be16 unmap_blk_desc_data_len;
2388 u32 resv;
2389 struct scsi_unmap_blk_desc desc[0];
2390};
2391
2392static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr,
2393 u8 *cmd)
2394{
2395 struct scsi_unmap_parm_list *plist;
2396 struct nvme_dsm_range *range;
2397 struct nvme_command c;
2398 int i, nvme_sc, res;
2399 u16 ndesc, list_len;
2400
2401 list_len = get_unaligned_be16(&cmd[7]);
2402 if (!list_len)
2403 return -EINVAL;
2404
2405 plist = kmalloc(list_len, GFP_KERNEL);
2406 if (!plist)
2407 return -ENOMEM;
2408
2409 res = nvme_trans_copy_from_user(hdr, plist, list_len);
2410 if (res)
2411 goto out;
2412
2413 ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4;
2414 if (!ndesc || ndesc > 256) {
2415 res = -EINVAL;
2416 goto out;
2417 }
2418
2419 range = kcalloc(ndesc, sizeof(*range), GFP_KERNEL);
2420 if (!range) {
2421 res = -ENOMEM;
2422 goto out;
2423 }
2424
2425 for (i = 0; i < ndesc; i++) {
2426 range[i].nlb = cpu_to_le32(be32_to_cpu(plist->desc[i].nlb));
2427 range[i].slba = cpu_to_le64(be64_to_cpu(plist->desc[i].slba));
2428 range[i].cattr = 0;
2429 }
2430
2431 memset(&c, 0, sizeof(c));
2432 c.dsm.opcode = nvme_cmd_dsm;
2433 c.dsm.nsid = cpu_to_le32(ns->ns_id);
2434 c.dsm.nr = cpu_to_le32(ndesc - 1);
2435 c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);
2436
2437 nvme_sc = nvme_submit_sync_cmd(ns->queue, &c, range,
2438 ndesc * sizeof(*range));
2439 res = nvme_trans_status_code(hdr, nvme_sc);
2440
2441 kfree(range);
2442 out:
2443 kfree(plist);
2444 return res;
2445}
2446
2447static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr)
2448{
2449 u8 cmd[BLK_MAX_CDB];
2450 int retcode;
2451 unsigned int opcode;
2452
2453 if (hdr->cmdp == NULL)
2454 return -EMSGSIZE;
2455 if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len))
2456 return -EFAULT;
2457
2458
2459
2460
2461
2462 retcode = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
2463 if (retcode)
2464 return retcode;
2465
2466 opcode = cmd[0];
2467
2468 switch (opcode) {
2469 case READ_6:
2470 case READ_10:
2471 case READ_12:
2472 case READ_16:
2473 retcode = nvme_trans_io(ns, hdr, 0, cmd);
2474 break;
2475 case WRITE_6:
2476 case WRITE_10:
2477 case WRITE_12:
2478 case WRITE_16:
2479 retcode = nvme_trans_io(ns, hdr, 1, cmd);
2480 break;
2481 case INQUIRY:
2482 retcode = nvme_trans_inquiry(ns, hdr, cmd);
2483 break;
2484 case LOG_SENSE:
2485 retcode = nvme_trans_log_sense(ns, hdr, cmd);
2486 break;
2487 case MODE_SELECT:
2488 case MODE_SELECT_10:
2489 retcode = nvme_trans_mode_select(ns, hdr, cmd);
2490 break;
2491 case MODE_SENSE:
2492 case MODE_SENSE_10:
2493 retcode = nvme_trans_mode_sense(ns, hdr, cmd);
2494 break;
2495 case READ_CAPACITY:
2496 retcode = nvme_trans_read_capacity(ns, hdr, cmd, 0);
2497 break;
2498 case SERVICE_ACTION_IN_16:
2499 switch (cmd[1]) {
2500 case SAI_READ_CAPACITY_16:
2501 retcode = nvme_trans_read_capacity(ns, hdr, cmd, 1);
2502 break;
2503 default:
2504 goto out;
2505 }
2506 break;
2507 case REPORT_LUNS:
2508 retcode = nvme_trans_report_luns(ns, hdr, cmd);
2509 break;
2510 case REQUEST_SENSE:
2511 retcode = nvme_trans_request_sense(ns, hdr, cmd);
2512 break;
2513 case SECURITY_PROTOCOL_IN:
2514 case SECURITY_PROTOCOL_OUT:
2515 retcode = nvme_trans_security_protocol(ns, hdr, cmd);
2516 break;
2517 case START_STOP:
2518 retcode = nvme_trans_start_stop(ns, hdr, cmd);
2519 break;
2520 case SYNCHRONIZE_CACHE:
2521 retcode = nvme_trans_synchronize_cache(ns, hdr);
2522 break;
2523 case FORMAT_UNIT:
2524 retcode = nvme_trans_format_unit(ns, hdr, cmd);
2525 break;
2526 case TEST_UNIT_READY:
2527 retcode = nvme_trans_test_unit_ready(ns, hdr, cmd);
2528 break;
2529 case WRITE_BUFFER:
2530 retcode = nvme_trans_write_buffer(ns, hdr, cmd);
2531 break;
2532 case UNMAP:
2533 retcode = nvme_trans_unmap(ns, hdr, cmd);
2534 break;
2535 default:
2536 out:
2537 retcode = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
2538 ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
2539 SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
2540 break;
2541 }
2542 return retcode;
2543}
2544
2545int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr)
2546{
2547 struct sg_io_hdr hdr;
2548 int retcode;
2549
2550 if (!capable(CAP_SYS_ADMIN))
2551 return -EACCES;
2552 if (copy_from_user(&hdr, u_hdr, sizeof(hdr)))
2553 return -EFAULT;
2554 if (hdr.interface_id != 'S')
2555 return -EINVAL;
2556 if (hdr.cmd_len > BLK_MAX_CDB)
2557 return -EINVAL;
2558
2559
2560
2561
2562
2563 retcode = nvme_scsi_translate(ns, &hdr);
2564 if (retcode < 0)
2565 return retcode;
2566 if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0)
2567 return -EFAULT;
2568 return 0;
2569}
2570
2571int nvme_sg_get_version_num(int __user *ip)
2572{
2573 return put_user(sg_version_num, ip);
2574}
2575
