forked from mirror/smartmontools
-
Notifications
You must be signed in to change notification settings - Fork 1
/
scsiata.cpp
1623 lines (1425 loc) · 54 KB
/
scsiata.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* scsiata.cpp
*
* Home page of code is: http://www.smartmontools.org
*
* Copyright (C) 2006-15 Douglas Gilbert <[email protected]>
* Copyright (C) 2009-17 Christian Franke
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* You should have received a copy of the GNU General Public License
* (for example COPYING); if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* The code in this file is based on the SCSI to ATA Translation (SAT)
* draft found at http://www.t10.org . The original draft used for this
* code is sat-r08.pdf which is not too far away from becoming a
* standard. The SAT commands of interest to smartmontools are the
* ATA PASS THROUGH SCSI (16) and ATA PASS THROUGH SCSI (12) defined in
* section 12 of that document.
*
* sat-r09.pdf is the most recent, easily accessible draft prior to the
* original SAT standard (ANSI INCITS 431-2007). By mid-2009 the second
* version of the SAT standard (SAT-2) is nearing standardization. In
* their wisdom an incompatible change has been introduced in draft
* sat2r08a.pdf in the area of the ATA RETURN DESCRIPTOR. A new "fixed
* format" ATA RETURN buffer has been defined (sat2r08b.pdf section
* 12.2.7) for the case when DSENSE=0 in the Control mode page.
* Unfortunately this is the normal case. If the change stands our
* code will need to be extended for this case.
*
* With more transports "hiding" SATA disks (and other S-ATAPI devices)
* behind a SCSI command set, accessing special features like SMART
* information becomes a challenge. The SAT standard offers ATA PASS
* THROUGH commands for special usages. Note that the SAT layer may
* be inside a generic OS layer (e.g. libata in linux), in a host
* adapter (HA or HBA) firmware, or somewhere on the interconnect
* between the host computer and the SATA devices (e.g. a RAID made
* of SATA disks and the RAID talks "SCSI" to the host computer).
* Note that in the latter case, this code does not solve the
* addressing issue (i.e. which SATA disk to address behind the logical
* SCSI (RAID) interface).
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include "config.h"
#include "int64.h"
#include "scsicmds.h"
#include "atacmds.h" // ataReadHDIdentity()
#include "knowndrives.h" // lookup_usb_device()
#include "utility.h"
#include "dev_interface.h"
#include "dev_ata_cmd_set.h" // ata_device_with_command_set
#include "dev_tunnelled.h" // tunnelled_device<>
const char * scsiata_cpp_cvsid = "$Id$";
/* This is a slightly stretched SCSI sense "descriptor" format header.
The addition is to allow the 0x70 and 0x71 response codes. The idea
is to place the salient data of both "fixed" and "descriptor" sense
format into one structure to ease application processing.
The original sense buffer should be kept around for those cases
in which more information is required (e.g. the LBA of a MEDIUM ERROR). */
/// Abridged SCSI sense data
struct sg_scsi_sense_hdr {
unsigned char response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */
unsigned char sense_key;
unsigned char asc;
unsigned char ascq;
unsigned char byte4;
unsigned char byte5;
unsigned char byte6;
unsigned char additional_length;
};
/* Maps the salient data from a sense buffer which is in either fixed or
descriptor format into a structure mimicking a descriptor format
header (i.e. the first 8 bytes of sense descriptor format).
If zero response code returns 0. Otherwise returns 1 and if 'sshp' is
non-NULL then zero all fields and then set the appropriate fields in
that structure. sshp::additional_length is always 0 for response
codes 0x70 and 0x71 (fixed format). */
static int sg_scsi_normalize_sense(const unsigned char * sensep, int sb_len,
struct sg_scsi_sense_hdr * sshp);
#define SAT_ATA_PASSTHROUGH_12LEN 12
#define SAT_ATA_PASSTHROUGH_16LEN 16
#define DEF_SAT_ATA_PASSTHRU_SIZE 16
#define ATA_RETURN_DESCRIPTOR 9
namespace sat { // no need to publish anything, name provided for Doxygen
/// SAT support.
/// Implements ATA by tunnelling through SCSI.
class sat_device
: public tunnelled_device<
/*implements*/ ata_device
/*by tunnelling through a*/, scsi_device
>,
virtual public /*implements*/ scsi_device
{
public:
sat_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, int passthrulen = 0, bool enable_auto = false);
virtual ~sat_device() throw();
virtual smart_device * autodetect_open();
virtual bool ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out);
virtual bool scsi_pass_through(scsi_cmnd_io * iop);
private:
int m_passthrulen;
bool m_enable_auto;
};
sat_device::sat_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, int passthrulen /* = 0 */, bool enable_auto /* = false */)
: smart_device(intf, scsidev->get_dev_name(),
(enable_auto ? "sat,auto" : "sat"), req_type),
tunnelled_device<ata_device, scsi_device>(scsidev),
m_passthrulen(passthrulen),
m_enable_auto(enable_auto)
{
if (enable_auto)
hide_ata(); // Start as SCSI, switch to ATA in autodetect_open()
else
hide_scsi(); // ATA always
if (strcmp(scsidev->get_dev_type(), "scsi"))
set_info().dev_type += strprintf("+%s", scsidev->get_dev_type());
set_info().info_name = strprintf("%s [%sSAT]", scsidev->get_info_name(),
(enable_auto ? "SCSI/" : ""));
}
sat_device::~sat_device() throw()
{
}
// cdb[0]: ATA PASS THROUGH (16) SCSI command opcode byte (0x85)
// cdb[1]: multiple_count, protocol + extend
// cdb[2]: offline, ck_cond, t_dir, byte_block + t_length
// cdb[3]: features (15:8)
// cdb[4]: features (7:0)
// cdb[5]: sector_count (15:8)
// cdb[6]: sector_count (7:0)
// cdb[7]: lba_low (15:8)
// cdb[8]: lba_low (7:0)
// cdb[9]: lba_mid (15:8)
// cdb[10]: lba_mid (7:0)
// cdb[11]: lba_high (15:8)
// cdb[12]: lba_high (7:0)
// cdb[13]: device
// cdb[14]: (ata) command
// cdb[15]: control (SCSI, leave as zero)
//
// 24 bit lba (from MSB): cdb[12] cdb[10] cdb[8]
// 48 bit lba (from MSB): cdb[11] cdb[9] cdb[7] cdb[12] cdb[10] cdb[8]
//
//
// cdb[0]: ATA PASS THROUGH (12) SCSI command opcode byte (0xa1)
// cdb[1]: multiple_count, protocol + extend
// cdb[2]: offline, ck_cond, t_dir, byte_block + t_length
// cdb[3]: features (7:0)
// cdb[4]: sector_count (7:0)
// cdb[5]: lba_low (7:0)
// cdb[6]: lba_mid (7:0)
// cdb[7]: lba_high (7:0)
// cdb[8]: device
// cdb[9]: (ata) command
// cdb[10]: reserved
// cdb[11]: control (SCSI, leave as zero)
//
//
// ATA Return Descriptor (component of descriptor sense data)
// des[0]: descriptor code (0x9)
// des[1]: additional descriptor length (0xc)
// des[2]: extend (bit 0)
// des[3]: error
// des[4]: sector_count (15:8)
// des[5]: sector_count (7:0)
// des[6]: lba_low (15:8)
// des[7]: lba_low (7:0)
// des[8]: lba_mid (15:8)
// des[9]: lba_mid (7:0)
// des[10]: lba_high (15:8)
// des[11]: lba_high (7:0)
// des[12]: device
// des[13]: status
//
//
// ATA registers returned via fixed format sense (allowed >= SAT-2)
// fxs[0]: info_valid (bit 7); response_code (6:0)
// fxs[1]: (obsolete)
// fxs[2]: sense_key (3:0) --> recovered error (formerly 'no sense')
// fxs[3]: information (31:24) --> ATA Error register
// fxs[4]: information (23:16) --> ATA Status register
// fxs[5]: information (15:8) --> ATA Device register
// fxs[6]: information (7:0) --> ATA Count (7:0)
// fxs[7]: additional sense length [should be >= 10]
// fxs[8]: command specific info (31:24) --> Extend (7), count_upper_nonzero
// (6), lba_upper_nonzero(5), log_index (3:0)
// fxs[9]: command specific info (23:16) --> ATA LBA (7:0)
// fxs[10]: command specific info (15:8) --> ATA LBA (15:8)
// fxs[11]: command specific info (7:0) --> ATA LBA (23:16)
// fxs[12]: additional sense code (asc) --> 0x0
// fxs[13]: additional sense code qualifier (ascq) --> 0x1d
// asc,ascq = 0x0,0x1d --> 'ATA pass through information available'
// PURPOSE
// This interface routine takes ATA SMART commands and packages
// them in the SAT-defined ATA PASS THROUGH SCSI commands. There are
// two available SCSI commands: a 12 byte and 16 byte variant; the
// one used is chosen via this->m_passthrulen .
// DETAILED DESCRIPTION OF ARGUMENTS
// device: is the file descriptor provided by (a SCSI dvice type) open()
// command: defines the different ATA operations.
// select: additional input data if needed (which log, which type of
// self-test).
// data: location to write output data, if needed (512 bytes).
// Note: not all commands use all arguments.
// RETURN VALUES
// -1 if the command failed
// 0 if the command succeeded,
// STATUS_CHECK routine:
// -1 if the command failed
// 0 if the command succeeded and disk SMART status is "OK"
// 1 if the command succeeded and disk SMART status is "FAILING"
bool sat_device::ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out)
{
if (!ata_cmd_is_supported(in,
ata_device::supports_data_out |
ata_device::supports_output_regs |
ata_device::supports_multi_sector |
ata_device::supports_48bit,
"SAT")
)
return false;
struct scsi_cmnd_io io_hdr;
struct scsi_sense_disect sinfo;
struct sg_scsi_sense_hdr ssh;
unsigned char cdb[SAT_ATA_PASSTHROUGH_16LEN];
unsigned char sense[32];
const unsigned char * ardp;
int ard_len, have_sense;
int extend = 0;
int ck_cond = 0; /* set to 1 to read register(s) back */
int protocol = 3; /* non-data */
int t_dir = 1; /* 0 -> to device, 1 -> from device */
int byte_block = 1; /* 0 -> bytes, 1 -> 512 byte blocks */
int t_length = 0; /* 0 -> no data transferred */
int passthru_size = DEF_SAT_ATA_PASSTHRU_SIZE;
bool sense_descriptor = true;
memset(cdb, 0, sizeof(cdb));
memset(sense, 0, sizeof(sense));
// Set data direction
// TODO: This works only for commands where sector_count holds count!
switch (in.direction) {
case ata_cmd_in::no_data:
break;
case ata_cmd_in::data_in:
protocol = 4; // PIO data-in
t_length = 2; // sector_count holds count
break;
case ata_cmd_in::data_out:
protocol = 5; // PIO data-out
t_length = 2; // sector_count holds count
t_dir = 0; // to device
break;
default:
return set_err(EINVAL, "sat_device::ata_pass_through: invalid direction=%d",
(int)in.direction);
}
// Check condition if any output register needed
if (in.out_needed.is_set())
ck_cond = 1;
if ((SAT_ATA_PASSTHROUGH_12LEN == m_passthrulen) ||
(SAT_ATA_PASSTHROUGH_16LEN == m_passthrulen))
passthru_size = m_passthrulen;
// Set extend bit on 48-bit ATA command
if (in.in_regs.is_48bit_cmd()) {
if (passthru_size != SAT_ATA_PASSTHROUGH_16LEN)
return set_err(ENOSYS, "48-bit ATA commands require SAT ATA PASS-THROUGH (16)");
extend = 1;
}
cdb[0] = (SAT_ATA_PASSTHROUGH_12LEN == passthru_size) ?
SAT_ATA_PASSTHROUGH_12 : SAT_ATA_PASSTHROUGH_16;
cdb[1] = (protocol << 1) | extend;
cdb[2] = (ck_cond << 5) | (t_dir << 3) |
(byte_block << 2) | t_length;
if (passthru_size == SAT_ATA_PASSTHROUGH_12LEN) {
// ATA PASS-THROUGH (12)
const ata_in_regs & lo = in.in_regs;
cdb[3] = lo.features;
cdb[4] = lo.sector_count;
cdb[5] = lo.lba_low;
cdb[6] = lo.lba_mid;
cdb[7] = lo.lba_high;
cdb[8] = lo.device;
cdb[9] = lo.command;
}
else {
// ATA PASS-THROUGH (16)
const ata_in_regs & lo = in.in_regs;
const ata_in_regs & hi = in.in_regs.prev;
// Note: all 'in.in_regs.prev.*' are always zero for 28-bit commands
cdb[ 3] = hi.features;
cdb[ 4] = lo.features;
cdb[ 5] = hi.sector_count;
cdb[ 6] = lo.sector_count;
cdb[ 7] = hi.lba_low;
cdb[ 8] = lo.lba_low;
cdb[ 9] = hi.lba_mid;
cdb[10] = lo.lba_mid;
cdb[11] = hi.lba_high;
cdb[12] = lo.lba_high;
cdb[13] = lo.device;
cdb[14] = lo.command;
}
memset(&io_hdr, 0, sizeof(io_hdr));
if (0 == t_length) {
io_hdr.dxfer_dir = DXFER_NONE;
io_hdr.dxfer_len = 0;
} else if (t_dir) { /* from device */
io_hdr.dxfer_dir = DXFER_FROM_DEVICE;
io_hdr.dxfer_len = in.size;
io_hdr.dxferp = (unsigned char *)in.buffer;
memset(in.buffer, 0, in.size); // prefill with zeroes
} else { /* to device */
io_hdr.dxfer_dir = DXFER_TO_DEVICE;
io_hdr.dxfer_len = in.size;
io_hdr.dxferp = (unsigned char *)in.buffer;
}
io_hdr.cmnd = cdb;
io_hdr.cmnd_len = passthru_size;
io_hdr.sensep = sense;
io_hdr.max_sense_len = sizeof(sense);
io_hdr.timeout = SCSI_TIMEOUT_DEFAULT;
scsi_device * scsidev = get_tunnel_dev();
if (!scsidev->scsi_pass_through(&io_hdr)) {
if (scsi_debugmode > 0)
pout("sat_device::ata_pass_through: scsi_pass_through() failed, "
"errno=%d [%s]\n", scsidev->get_errno(), scsidev->get_errmsg());
return set_err(scsidev->get_err());
}
ardp = NULL;
ard_len = 0;
have_sense = sg_scsi_normalize_sense(io_hdr.sensep, io_hdr.resp_sense_len,
&ssh);
if (have_sense) {
sense_descriptor = ssh.response_code >= 0x72;
if (sense_descriptor) {
/* look for SAT ATA Return Descriptor */
ardp = sg_scsi_sense_desc_find(io_hdr.sensep,
io_hdr.resp_sense_len,
ATA_RETURN_DESCRIPTOR);
if (ardp) {
ard_len = ardp[1] + 2;
if (ard_len < 12)
ard_len = 12;
else if (ard_len > 14)
ard_len = 14;
}
}
scsi_do_sense_disect(&io_hdr, &sinfo);
int status = scsiSimpleSenseFilter(&sinfo);
// Workaround for bogus sense_key in sense data with SAT ATA Return Descriptor
if ( status && ck_cond && ardp && ard_len > 13
&& (ardp[13] & 0xc1) == 0x40 /* !BSY && DRDY && !ERR */) {
if (scsi_debugmode > 0)
pout("ATA status (0x%02x) indicates success, ignoring SCSI sense_key\n",
ardp[13]);
status = 0;
}
if (0 != status) { /* other than no_sense and recovered_error */
if (scsi_debugmode > 0) {
pout("sat_device::ata_pass_through: scsi error: %s\n",
scsiErrString(status));
if (ardp && (scsi_debugmode > 1)) {
pout("Values from ATA Return Descriptor are:\n");
dStrHex((const char *)ardp, ard_len, 1);
}
}
if (t_dir && (t_length > 0) && (in.direction == ata_cmd_in::data_in))
memset(in.buffer, 0, in.size);
return set_err(EIO, "scsi error %s", scsiErrString(status));
}
}
if (ck_cond) { /* expecting SAT specific sense data */
if (have_sense) {
if (ardp) {
if (scsi_debugmode > 1) {
pout("Values from ATA Return Descriptor are:\n");
dStrHex((const char *)ardp, ard_len, 1);
}
// Set output registers
ata_out_regs & lo = out.out_regs;
lo.error = ardp[ 3];
lo.sector_count = ardp[ 5];
lo.lba_low = ardp[ 7];
lo.lba_mid = ardp[ 9];
lo.lba_high = ardp[11];
lo.device = ardp[12];
lo.status = ardp[13];
if (in.in_regs.is_48bit_cmd()) {
ata_out_regs & hi = out.out_regs.prev;
hi.sector_count = ardp[ 4];
hi.lba_low = ardp[ 6];
hi.lba_mid = ardp[ 8];
hi.lba_high = ardp[10];
}
} else if ((! sense_descriptor) &&
(0 == ssh.asc) &&
(SCSI_ASCQ_ATA_PASS_THROUGH == ssh.ascq) &&
(0 != io_hdr.sensep[4] /* Some ATA STATUS bit must be set */)) {
/* in SAT-2 and later, ATA registers may be passed back via
* fixed format sense data [ref: sat3r07 section 12.2.2.7] */
ata_out_regs & lo = out.out_regs;
lo.error = io_hdr.sensep[ 3];
lo.status = io_hdr.sensep[ 4];
lo.device = io_hdr.sensep[ 5];
lo.sector_count = io_hdr.sensep[ 6];
lo.lba_low = io_hdr.sensep[ 9];
lo.lba_mid = io_hdr.sensep[10];
lo.lba_high = io_hdr.sensep[11];
if (in.in_regs.is_48bit_cmd()) {
if (0 == (0x60 & io_hdr.sensep[8])) {
ata_out_regs & hi = out.out_regs.prev;
hi.sector_count = 0;
hi.lba_low = 0;
hi.lba_mid = 0;
hi.lba_high = 0;
} else {
/* getting the "hi." values when either
* count_upper_nonzero or lba_upper_nonzero are set
* involves fetching the SCSI ATA PASS-THROUGH
* Results log page and decoding the descriptor with
* the matching log_index field. Painful. */
}
}
}
}
} else { /* ck_cond == 0 */
if (have_sense) {
if (((SCSI_SK_NO_SENSE == ssh.sense_key) ||
(SCSI_SK_RECOVERED_ERR == ssh.sense_key)) &&
(0 == ssh.asc) &&
(SCSI_ASCQ_ATA_PASS_THROUGH == ssh.ascq)) {
if (scsi_debugmode > 0) {
if (sense_descriptor && ardp) {
pout("Values from ATA Return Descriptor are:\n");
dStrHex((const char *)ardp, ard_len, 1);
} else if (! sense_descriptor) {
pout("Values from ATA fixed format sense are:\n");
pout(" Error: 0x%x\n", io_hdr.sensep[3]);
pout(" Status: 0x%x\n", io_hdr.sensep[4]);
pout(" Device: 0x%x\n", io_hdr.sensep[5]);
pout(" Count: 0x%x\n", io_hdr.sensep[6]);
}
}
}
return set_err(EIO, "SAT command failed");
}
}
return true;
}
bool sat_device::scsi_pass_through(scsi_cmnd_io * iop)
{
scsi_device * scsidev = get_tunnel_dev();
if (!scsidev->scsi_pass_through(iop)) {
set_err(scsidev->get_err());
return false;
}
return true;
}
smart_device * sat_device::autodetect_open()
{
if (!open() || !m_enable_auto)
return this;
scsi_device * scsidev = get_tunnel_dev();
unsigned char inqdata[36] = {0, };
if (scsiStdInquiry(scsidev, inqdata, sizeof(inqdata))) {
smart_device::error_info err = scsidev->get_err();
close();
set_err(err.no, "INQUIRY [SAT]: %s", err.msg.c_str());
return this;
}
// Check for SAT "VENDOR"
int inqsize = inqdata[4] + 5;
bool sat = (inqsize >= 36 && !memcmp(inqdata + 8, "ATA ", 8));
// Change interface
hide_ata(!sat);
hide_scsi(sat);
set_info().dev_type = (sat ? "sat" : scsidev->get_dev_type());
set_info().info_name = strprintf("%s [%s]", scsidev->get_info_name(),
(sat ? "SAT" : "SCSI"));
return this;
}
} // namespace
/////////////////////////////////////////////////////////////////////////////
/* Attempt an IDENTIFY DEVICE ATA command via SATL when packet_interface
is false otherwise attempt IDENTIFY PACKET DEVICE. If successful
return true, else false */
static bool has_sat_pass_through(ata_device * dev, bool packet_interface = false)
{
/* Note: malloc() ensures the read buffer lands on a single
page. This avoids some bugs seen on LSI controlers under
FreeBSD */
char *data = (char *)malloc(512);
ata_cmd_in in;
in.in_regs.command = (packet_interface ? ATA_IDENTIFY_PACKET_DEVICE : ATA_IDENTIFY_DEVICE);
in.set_data_in(data, 1);
bool ret = dev->ata_pass_through(in);
free(data);
return ret;
}
/////////////////////////////////////////////////////////////////////////////
/* Next two functions are borrowed from sg_lib.c in the sg3_utils
package. Same copyrght owner, same license as this file. */
static int sg_scsi_normalize_sense(const unsigned char * sensep, int sb_len,
struct sg_scsi_sense_hdr * sshp)
{
if (sshp)
memset(sshp, 0, sizeof(struct sg_scsi_sense_hdr));
if ((NULL == sensep) || (0 == sb_len) || (0x70 != (0x70 & sensep[0])))
return 0;
if (sshp) {
sshp->response_code = (0x7f & sensep[0]);
if (sshp->response_code >= 0x72) { /* descriptor format */
if (sb_len > 1)
sshp->sense_key = (0xf & sensep[1]);
if (sb_len > 2)
sshp->asc = sensep[2];
if (sb_len > 3)
sshp->ascq = sensep[3];
if (sb_len > 7)
sshp->additional_length = sensep[7];
} else { /* fixed format */
if (sb_len > 2)
sshp->sense_key = (0xf & sensep[2]);
if (sb_len > 7) {
sb_len = (sb_len < (sensep[7] + 8)) ? sb_len :
(sensep[7] + 8);
if (sb_len > 12)
sshp->asc = sensep[12];
if (sb_len > 13)
sshp->ascq = sensep[13];
}
}
}
return 1;
}
// Call scsi_pass_through and check sense.
// TODO: Provide as member function of class scsi_device (?)
static bool scsi_pass_through_and_check(scsi_device * scsidev, scsi_cmnd_io * iop,
const char * msg = "")
{
// Provide sense buffer
unsigned char sense[32] = {0, };
iop->sensep = sense;
iop->max_sense_len = sizeof(sense);
iop->timeout = SCSI_TIMEOUT_DEFAULT;
// Run cmd
if (!scsidev->scsi_pass_through(iop)) {
if (scsi_debugmode > 0)
pout("%sscsi_pass_through() failed, errno=%d [%s]\n",
msg, scsidev->get_errno(), scsidev->get_errmsg());
return false;
}
// Check sense
scsi_sense_disect sinfo;
scsi_do_sense_disect(iop, &sinfo);
int err = scsiSimpleSenseFilter(&sinfo);
if (err) {
if (scsi_debugmode > 0)
pout("%sscsi error: %s\n", msg, scsiErrString(err));
return scsidev->set_err(EIO, "scsi error %s", scsiErrString(err));
}
return true;
}
/////////////////////////////////////////////////////////////////////////////
namespace sat {
/// Cypress USB Brigde support.
class usbcypress_device
: public tunnelled_device<
/*implements*/ ata_device_with_command_set
/*by tunnelling through a*/, scsi_device
>
{
public:
usbcypress_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, unsigned char signature);
virtual ~usbcypress_device() throw();
protected:
virtual int ata_command_interface(smart_command_set command, int select, char * data);
unsigned char m_signature;
};
usbcypress_device::usbcypress_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, unsigned char signature)
: smart_device(intf, scsidev->get_dev_name(), "sat", req_type),
tunnelled_device<ata_device_with_command_set, scsi_device>(scsidev),
m_signature(signature)
{
set_info().info_name = strprintf("%s [USB Cypress]", scsidev->get_info_name());
}
usbcypress_device::~usbcypress_device() throw()
{
}
/* see cy7c68300c_8.pdf for more information */
#define USBCYPRESS_PASSTHROUGH_LEN 16
int usbcypress_device::ata_command_interface(smart_command_set command, int select, char *data)
{
struct scsi_cmnd_io io_hdr;
unsigned char cdb[USBCYPRESS_PASSTHROUGH_LEN];
unsigned char sense[32];
int copydata = 0;
int outlen = 0;
int ck_cond = 0; /* set to 1 to read register(s) back */
int t_dir = 1; /* 0 -> to device, 1 -> from device */
int byte_block = 1; /* 0 -> bytes, 1 -> 512 byte blocks */
int t_length = 0; /* 0 -> no data transferred */
int feature = 0;
int ata_command = 0;
int sector_count = 0;
int lba_low = 0;
int lba_mid = 0;
int lba_high = 0;
int passthru_size = USBCYPRESS_PASSTHROUGH_LEN;
memset(cdb, 0, sizeof(cdb));
memset(sense, 0, sizeof(sense));
ata_command = ATA_SMART_CMD;
switch (command) {
case CHECK_POWER_MODE:
ata_command = ATA_CHECK_POWER_MODE;
ck_cond = 1;
copydata = 1;
break;
case READ_VALUES: /* READ DATA */
feature = ATA_SMART_READ_VALUES;
sector_count = 1; /* one (512 byte) block */
t_length = 2; /* sector count holds count */
copydata = 512;
break;
case READ_THRESHOLDS: /* obsolete */
feature = ATA_SMART_READ_THRESHOLDS;
sector_count = 1; /* one (512 byte) block */
lba_low = 1;
t_length = 2; /* sector count holds count */
copydata=512;
break;
case READ_LOG:
feature = ATA_SMART_READ_LOG_SECTOR;
sector_count = 1; /* one (512 byte) block */
lba_low = select;
t_length = 2; /* sector count holds count */
copydata = 512;
break;
case WRITE_LOG:
feature = ATA_SMART_WRITE_LOG_SECTOR;
sector_count = 1; /* one (512 byte) block */
lba_low = select;
t_length = 2; /* sector count holds count */
t_dir = 0; /* to device */
outlen = 512;
break;
case IDENTIFY:
ata_command = ATA_IDENTIFY_DEVICE;
sector_count = 1; /* one (512 byte) block */
t_length = 2; /* sector count holds count */
copydata = 512;
break;
case PIDENTIFY:
ata_command = ATA_IDENTIFY_PACKET_DEVICE;
sector_count = 1; /* one (512 byte) block */
t_length = 2; /* sector count (7:0) holds count */
copydata = 512;
break;
case ENABLE:
feature = ATA_SMART_ENABLE;
lba_low = 1;
break;
case DISABLE:
feature = ATA_SMART_DISABLE;
lba_low = 1;
break;
case STATUS:
// this command only says if SMART is working. It could be
// replaced with STATUS_CHECK below.
feature = ATA_SMART_STATUS;
ck_cond = 1;
break;
case AUTO_OFFLINE:
feature = ATA_SMART_AUTO_OFFLINE;
sector_count = select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
break;
case AUTOSAVE:
feature = ATA_SMART_AUTOSAVE;
sector_count = select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
break;
case IMMEDIATE_OFFLINE:
feature = ATA_SMART_IMMEDIATE_OFFLINE;
lba_low = select;
break;
case STATUS_CHECK:
// This command uses HDIO_DRIVE_TASK and has different syntax than
// the other commands.
feature = ATA_SMART_STATUS; /* SMART RETURN STATUS */
ck_cond = 1;
break;
default:
pout("Unrecognized command %d in usbcypress_device::ata_command_interface()\n"
"Please contact " PACKAGE_BUGREPORT "\n", command);
errno=ENOSYS;
return -1;
}
if (ATA_SMART_CMD == ata_command) {
lba_mid = 0x4f;
lba_high = 0xc2;
}
cdb[0] = m_signature; // bVSCBSignature : vendor-specific command
cdb[1] = 0x24; // bVSCBSubCommand : 0x24 for ATACB
cdb[2] = 0x0;
if (ata_command == ATA_IDENTIFY_DEVICE || ata_command == ATA_IDENTIFY_PACKET_DEVICE)
cdb[2] |= (1<<7); //set IdentifyPacketDevice for these cmds
cdb[3] = 0xff - (1<<0) - (1<<6); //features, sector count, lba low, lba med
// lba high, command are valid
cdb[4] = byte_block; //TransferBlockCount : 512
cdb[6] = feature;
cdb[7] = sector_count;
cdb[8] = lba_low;
cdb[9] = lba_mid;
cdb[10] = lba_high;
cdb[12] = ata_command;
memset(&io_hdr, 0, sizeof(io_hdr));
if (0 == t_length) {
io_hdr.dxfer_dir = DXFER_NONE;
io_hdr.dxfer_len = 0;
} else if (t_dir) { /* from device */
io_hdr.dxfer_dir = DXFER_FROM_DEVICE;
io_hdr.dxfer_len = copydata;
io_hdr.dxferp = (unsigned char *)data;
memset(data, 0, copydata); /* prefill with zeroes */
} else { /* to device */
io_hdr.dxfer_dir = DXFER_TO_DEVICE;
io_hdr.dxfer_len = outlen;
io_hdr.dxferp = (unsigned char *)data;
}
io_hdr.cmnd = cdb;
io_hdr.cmnd_len = passthru_size;
io_hdr.sensep = sense;
io_hdr.max_sense_len = sizeof(sense);
io_hdr.timeout = SCSI_TIMEOUT_DEFAULT;
scsi_device * scsidev = get_tunnel_dev();
if (!scsidev->scsi_pass_through(&io_hdr)) {
if (scsi_debugmode > 0)
pout("usbcypress_device::ata_command_interface: scsi_pass_through() failed, "
"errno=%d [%s]\n", scsidev->get_errno(), scsidev->get_errmsg());
set_err(scsidev->get_err());
return -1;
}
// if there is a sense the command failed or the
// device doesn't support usbcypress
if (io_hdr.scsi_status == SCSI_STATUS_CHECK_CONDITION &&
sg_scsi_normalize_sense(io_hdr.sensep, io_hdr.resp_sense_len, NULL)) {
return -1;
}
if (ck_cond) {
unsigned char ardp[8];
int ard_len = 8;
/* XXX this is racy if there other scsi command between
* the first usbcypress command and this one
*/
//pout("If you got strange result, please retry without traffic on the disc\n");
/* we use the same command as before, but we set
* * the read taskfile bit, for not executing usbcypress command,
* * but reading register selected in srb->cmnd[4]
*/
cdb[2] = (1<<0); /* ask read taskfile */
memset(sense, 0, sizeof(sense));
/* transfert 8 bytes */
memset(&io_hdr, 0, sizeof(io_hdr));
io_hdr.dxfer_dir = DXFER_FROM_DEVICE;
io_hdr.dxfer_len = ard_len;
io_hdr.dxferp = (unsigned char *)ardp;
memset(ardp, 0, ard_len); /* prefill with zeroes */
io_hdr.cmnd = cdb;
io_hdr.cmnd_len = passthru_size;
io_hdr.sensep = sense;
io_hdr.max_sense_len = sizeof(sense);
io_hdr.timeout = SCSI_TIMEOUT_DEFAULT;
if (!scsidev->scsi_pass_through(&io_hdr)) {
if (scsi_debugmode > 0)
pout("usbcypress_device::ata_command_interface: scsi_pass_through() failed, "
"errno=%d [%s]\n", scsidev->get_errno(), scsidev->get_errmsg());
set_err(scsidev->get_err());
return -1;
}
// if there is a sense the command failed or the
// device doesn't support usbcypress
if (io_hdr.scsi_status == SCSI_STATUS_CHECK_CONDITION &&
sg_scsi_normalize_sense(io_hdr.sensep, io_hdr.resp_sense_len, NULL)) {
return -1;
}
if (scsi_debugmode > 1) {
pout("Values from ATA Return Descriptor are:\n");
dStrHex((const char *)ardp, ard_len, 1);
}
if (ATA_CHECK_POWER_MODE == ata_command)
data[0] = ardp[2]; /* sector count (0:7) */
else if (STATUS_CHECK == command) {
if ((ardp[4] == 0x4f) && (ardp[5] == 0xc2))
return 0; /* GOOD smart status */
if ((ardp[4] == 0xf4) && (ardp[5] == 0x2c))
return 1; // smart predicting failure, "bad" status
// We haven't gotten output that makes sense so
// print out some debugging info
syserror("Error SMART Status command failed");
pout("This may be due to a race in usbcypress\n");
pout("Retry without other disc access\n");
pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
pout("Values from ATA Return Descriptor are:\n");
dStrHex((const char *)ardp, ard_len, 1);
return -1;
}
}
return 0;
}
#if 0 // Not used, see autodetect_sat_device() below.
static int isprint_string(const char *s)
{
while (*s) {
if (isprint(*s) == 0)
return 0;
s++;
}
return 1;
}
/* Attempt an IDENTIFY DEVICE ATA or IDENTIFY PACKET DEVICE command
If successful return 1, else 0 */
// TODO: Combine with has_sat_pass_through above
static int has_usbcypress_pass_through(ata_device * atadev, const char *manufacturer, const char *product)
{
struct ata_identify_device drive;
char model[40], serial[20], firm[8];
/* issue the command and do a checksum if possible */
if (ataReadHDIdentity(atadev, &drive) < 0)
return 0;
/* check if model string match, revision doesn't work for me */
format_ata_string(model, drive.model, 40);
if (*model == 0 || isprint_string(model) == 0)
return 0;
if (manufacturer && strncmp(manufacturer, model, 8))
pout("manufacturer doesn't match in pass_through test\n");
if (product &&
strlen(model) > 8 && strncmp(product, model+8, strlen(model)-8))
pout("product doesn't match in pass_through test\n");
/* check serial */
format_ata_string(serial, drive.serial_no, 20);
if (isprint_string(serial) == 0)
return 0;
format_ata_string(firm, drive.fw_rev, 8);
if (isprint_string(firm) == 0)
return 0;
return 1;
}
#endif
/////////////////////////////////////////////////////////////////////////////
/// JMicron USB Bridge support.
class usbjmicron_device
: public tunnelled_device<
/*implements*/ ata_device,
/*by tunnelling through a*/ scsi_device
>
{
public:
usbjmicron_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, bool prolific,
bool ata_48bit_support, int port);
virtual ~usbjmicron_device() throw();
virtual bool open();
virtual bool ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out);
private:
bool get_registers(unsigned short addr, unsigned char * buf, unsigned short size);
bool m_prolific;
bool m_ata_48bit_support;
int m_port;
};
usbjmicron_device::usbjmicron_device(smart_interface * intf, scsi_device * scsidev,
const char * req_type, bool prolific,
bool ata_48bit_support, int port)
: smart_device(intf, scsidev->get_dev_name(), "usbjmicron", req_type),
tunnelled_device<ata_device, scsi_device>(scsidev),
m_prolific(prolific), m_ata_48bit_support(ata_48bit_support),
m_port(port >= 0 || !prolific ? port : 0)
{
set_info().info_name = strprintf("%s [USB JMicron]", scsidev->get_info_name());
}
usbjmicron_device::~usbjmicron_device() throw()
{
}
bool usbjmicron_device::open()
{
// Open USB first