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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
|
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Björn Stenberg
*
* 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
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "string.h"
#include "system.h"
#include "usb_core.h"
#include "usb_drv.h"
#include "usb_class_driver.h"
/*#define LOGF_ENABLE*/
#include "logf.h"
#include "storage.h"
#include "disk.h"
#include "fs_defines.h"
/* Needed to get at the audio buffer */
#include "audio.h"
#include "usb_storage.h"
#if CONFIG_RTC
#include "timefuncs.h"
#endif
#include "core_alloc.h"
#include "panic.h"
#ifdef USB_USE_RAMDISK
#define RAMDISK_SIZE 2048
#endif
/* These defaults allow the operation */
#ifndef USBSTOR_READ_SECTORS_FILTER
#define USBSTOR_READ_SECTORS_FILTER() ({ 0; })
#endif
#ifndef USBSTOR_WRITE_SECTORS_FILTER
#define USBSTOR_WRITE_SECTORS_FILTER() ({ 0; })
#endif
/* the ARC driver currently supports up to 64k USB transfers. This is
* enough for efficient mass storage support, as commonly host OSes
* don't do larger SCSI transfers anyway, so larger USB transfers
* wouldn't buy us anything.
* Due to being the double-buffering system used, using a smaller write buffer
* ends up being more efficient. Measurements have shown that 24k to 28k is
* optimal, except for sd devices that apparently don't gain anything from
* double-buffering
*/
#ifdef USB_READ_BUFFER_SIZE
#define READ_BUFFER_SIZE USB_READ_BUFFER_SIZE
#else
#if CONFIG_USBOTG == USBOTG_AS3525
/* We'd need to implement multidescriptor dma for sizes >65535 */
#define READ_BUFFER_SIZE (1024*63)
#else
#define READ_BUFFER_SIZE (1024*64)
#endif /* CONFIG_CPU == AS3525 */
#endif /* USB_READ_BUFFER_SIZE */
/* We don't use sizeof() here, because we *need* a multiple of 32 */
#define MAX_CBW_SIZE 512
#ifdef USB_WRITE_BUFFER_SIZE
#define WRITE_BUFFER_SIZE USB_WRITE_BUFFER_SIZE
#else
#if (CONFIG_STORAGE & STORAGE_SD)
#if CONFIG_USBOTG == USBOTG_AS3525
/* We'd need to implement multidescriptor dma for sizes >65535 */
#define WRITE_BUFFER_SIZE (1024*63)
#else
#define WRITE_BUFFER_SIZE (1024*64)
#endif /* CONFIG_CPU == AS3525 */
#else
#define WRITE_BUFFER_SIZE (1024*24)
#endif /* (CONFIG_STORAGE & STORAGE_SD) */
#endif /* USB_WRITE_BUFFER_SIZE */
#define ALLOCATE_BUFFER_SIZE (2*MAX(READ_BUFFER_SIZE,WRITE_BUFFER_SIZE))
/* bulk-only class specific requests */
#define USB_BULK_RESET_REQUEST 0xff
#define USB_BULK_GET_MAX_LUN 0xfe
#define DIRECT_ACCESS_DEVICE 0x00 /* disks */
#define DEVICE_REMOVABLE 0x80
#define CBW_SIGNATURE 0x43425355
#define CSW_SIGNATURE 0x53425355
#define SCSI_TEST_UNIT_READY 0x00
#define SCSI_INQUIRY 0x12
#define SCSI_MODE_SENSE_6 0x1a
#define SCSI_MODE_SENSE_10 0x5a
#define SCSI_REQUEST_SENSE 0x03
#define SCSI_ALLOW_MEDIUM_REMOVAL 0x1e
#define SCSI_READ_CAPACITY_10 0x25
#define SCSI_READ_CAPACITY_16 0x9e
#define USB_UFI_READ_FORMAT_CAPACITY 0x23
#define SCSI_READ_10 0x28
#define SCSI_WRITE_10 0x2a
#define SCSI_START_STOP_UNIT 0x1b
#define SCSI_REPORT_LUNS 0xa0
#define SCSI_WRITE_BUFFER 0x3b
#define SCSI_READ_16 0x88
#define SCSI_WRITE_16 0x8a
#define UMS_STATUS_GOOD 0x00
#define UMS_STATUS_FAIL 0x01
#define SENSE_NOT_READY 0x02
#define SENSE_MEDIUM_ERROR 0x03
#define SENSE_ILLEGAL_REQUEST 0x05
#define SENSE_UNIT_ATTENTION 0x06
#define ASC_MEDIUM_NOT_PRESENT 0x3a
#define ASC_INVALID_FIELD_IN_CBD 0x24
#define ASC_LBA_OUT_OF_RANGE 0x21
#define ASC_WRITE_ERROR 0x0C
#define ASC_READ_ERROR 0x11
#define ASC_NOT_READY 0x04
#define ASC_INVALID_COMMAND 0x20
#define ASCQ_BECOMING_READY 0x01
#define SCSI_FORMAT_CAPACITY_FORMATTED_MEDIA 0x02000000
/* storage interface */
#define USB_SC_SCSI 0x06 /* Transparent */
#define USB_PROT_BULK 0x50 /* bulk only */
static struct usb_interface_descriptor __attribute__((aligned(2)))
interface_descriptor =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = USB_SC_SCSI,
.bInterfaceProtocol = USB_PROT_BULK,
.iInterface = 0
};
static struct usb_endpoint_descriptor __attribute__((aligned(2)))
endpoint_descriptor =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 0,
.bInterval = 0
};
struct inquiry_data {
unsigned char DeviceType;
unsigned char DeviceTypeModifier;
unsigned char Versions;
unsigned char Format;
unsigned char AdditionalLength;
unsigned char Reserved[2];
unsigned char Capability;
unsigned char VendorId[8];
unsigned char ProductId[16];
unsigned char ProductRevisionLevel[4];
} __attribute__ ((packed));
struct report_lun_data {
unsigned int lun_list_length;
unsigned int reserved1;
unsigned char luns[NUM_DRIVES][8];
} __attribute__ ((packed));
struct sense_data {
unsigned char ResponseCode;
unsigned char Obsolete;
unsigned char fei_sensekey;
unsigned int Information;
unsigned char AdditionalSenseLength;
unsigned int CommandSpecificInformation;
unsigned char AdditionalSenseCode;
unsigned char AdditionalSenseCodeQualifier;
unsigned char FieldReplaceableUnitCode;
unsigned char SKSV;
unsigned short SenseKeySpecific;
} __attribute__ ((packed));
struct mode_sense_bdesc_longlba {
unsigned char num_blocks[8];
unsigned char reserved[4];
unsigned char block_size[4];
} __attribute__ ((packed));
struct mode_sense_bdesc_shortlba {
unsigned char density_code;
unsigned char num_blocks[3];
unsigned char reserved;
unsigned char block_size[3];
} __attribute__ ((packed));
struct mode_sense_data_10 {
unsigned short mode_data_length;
unsigned char medium_type;
unsigned char device_specific;
unsigned char longlba;
unsigned char reserved;
unsigned short block_descriptor_length;
struct mode_sense_bdesc_longlba block_descriptor;
} __attribute__ ((packed));
struct mode_sense_data_6 {
unsigned char mode_data_length;
unsigned char medium_type;
unsigned char device_specific;
unsigned char block_descriptor_length;
struct mode_sense_bdesc_shortlba block_descriptor;
} __attribute__ ((packed));
struct command_block_wrapper {
unsigned int signature;
unsigned int tag;
unsigned int data_transfer_length;
unsigned char flags;
unsigned char lun;
unsigned char command_length;
unsigned char command_block[16];
} __attribute__ ((packed));
struct command_status_wrapper {
unsigned int signature;
unsigned int tag;
unsigned int data_residue;
unsigned char status;
} __attribute__ ((packed));
struct capacity_10 {
unsigned char block_count[4];
unsigned char block_size[4];
} __attribute__ ((packed));
struct capacity_16 {
unsigned char block_count[8];
unsigned char block_size[4];
unsigned char flags[2];
unsigned char lowest_aligned_lba[2];
} __attribute__ ((packed));
struct format_capacity {
unsigned int following_length;
unsigned int block_count;
unsigned int block_size;
} __attribute__ ((packed));
static union {
unsigned char* transfer_buffer;
struct inquiry_data* inquiry;
struct capacity_10* capacity_data_10;
struct capacity_16* capacity_data_16;
struct format_capacity* format_capacity_data;
struct sense_data *sense_data;
struct mode_sense_data_6 *ms_data_6;
struct mode_sense_data_10 *ms_data_10;
struct report_lun_data *lun_data;
struct command_status_wrapper* csw;
char *max_lun;
} tb;
static char *cbw_buffer;
static struct {
sector_t sector;
unsigned int count;
unsigned int cur_cmd;
unsigned int block_size;
unsigned int tag;
unsigned int lun;
unsigned char *data[2];
unsigned char data_select;
unsigned int last_result;
} cur_cmd;
static struct {
unsigned char sense_key;
unsigned char information;
unsigned char asc;
unsigned char ascq;
} cur_sense_data;
static void handle_scsi(struct command_block_wrapper* cbw);
static void send_csw(int status);
static void send_command_result(void *data,int size);
static void send_command_failed_result(void);
static void send_block_data(void *data,int size);
static void receive_block_data(void *data,int size);
#if CONFIG_RTC
static void receive_time(void);
#endif
static void fill_inquiry(IF_MD_NONVOID(int lun));
static void send_and_read_next(void);
static bool ejected[NUM_DRIVES];
static bool locked[NUM_DRIVES];
static int usb_interface;
static int ep_in, ep_out;
#if defined(HAVE_MULTIDRIVE)
static bool skip_first = 0;
#endif
#ifdef USB_USE_RAMDISK
static unsigned char* ramdisk_buffer;
#endif
static enum {
WAITING_FOR_COMMAND,
SENDING_BLOCKS,
SENDING_RESULT,
SENDING_FAILED_RESULT,
RECEIVING_BLOCKS,
#if CONFIG_RTC
RECEIVING_TIME,
#endif
WAITING_FOR_CSW_COMPLETION_OR_COMMAND,
WAITING_FOR_CSW_COMPLETION
} state = WAITING_FOR_COMMAND;
#if CONFIG_RTC
static void yearday_to_daymonth(int yd, int y, int *d, int *m)
{
static char t[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
bool leap = (y%4 == 0 && y%100 != 0) || y%400 == 0;
t[1] = leap ? 29 : 28;
int i;
for (i = 0; i < 12 && yd >= t[i]; i++)
yd -= t[i];
*d = yd+1;
*m = i;
}
#endif /* CONFIG_RTC */
static bool check_disk_present(IF_MD_NONVOID(int volume))
{
#ifdef USB_USE_RAMDISK
return true;
#else
return disk_present(IF_MD(volume));
#endif
}
#ifdef HAVE_HOTSWAP
void usb_storage_notify_hotswap(int volume,bool inserted)
{
logf("notify %d",inserted);
if(inserted && check_disk_present(IF_MD(volume))) {
ejected[volume] = false;
}
else {
ejected[volume] = true;
/* If this happens while the device is locked, weird things may happen.
At least try to keep our state consistent */
locked[volume]=false;
}
}
#endif
#ifdef HAVE_MULTIDRIVE
void usb_set_skip_first_drive(bool skip)
{
skip_first = skip;
}
#endif
/* called by usb_core_init() */
void usb_storage_init(void)
{
logf("usb_storage_init done");
}
int usb_storage_request_endpoints(struct usb_class_driver *drv)
{
ep_in = usb_core_request_endpoint(USB_ENDPOINT_XFER_BULK, USB_DIR_IN, drv);
if(ep_in<0)
return -1;
ep_out = usb_core_request_endpoint(USB_ENDPOINT_XFER_BULK, USB_DIR_OUT,
drv);
if(ep_out<0) {
usb_core_release_endpoint(ep_in);
return -1;
}
return 0;
}
int usb_storage_set_first_interface(int interface)
{
usb_interface = interface;
return interface + 1;
}
int usb_storage_get_config_descriptor(unsigned char *dest,int max_packet_size)
{
unsigned char *orig_dest = dest;
interface_descriptor.bInterfaceNumber = usb_interface;
PACK_DATA(&dest, interface_descriptor);
endpoint_descriptor.wMaxPacketSize = max_packet_size;
endpoint_descriptor.bEndpointAddress = ep_in;
PACK_DATA(&dest, endpoint_descriptor);
endpoint_descriptor.bEndpointAddress = ep_out;
PACK_DATA(&dest, endpoint_descriptor);
return (dest - orig_dest);
}
#if (CONFIG_CPU == IMX31L || defined(CPU_TCC780X) || \
CONFIG_CPU == S5L8702 || CONFIG_CPU == S5L8701 || CONFIG_CPU == AS3525v2 || \
defined(BOOTLOADER) || CONFIG_CPU == DM320) && !defined(CPU_PP502x)
#define USB_STATIC_ALLOC
#else
static int usb_handle = 0;
#endif
void usb_storage_init_connection(void)
{
logf("ums: set config");
/* prime rx endpoint. We only need room for commands */
state = WAITING_FOR_COMMAND;
#ifdef USB_STATIC_ALLOC
static unsigned char _cbw_buffer[MAX_CBW_SIZE]
USB_DEVBSS_ATTR __attribute__((aligned(32)));
cbw_buffer = (void *)_cbw_buffer;
static unsigned char _transfer_buffer[ALLOCATE_BUFFER_SIZE]
USB_DEVBSS_ATTR __attribute__((aligned(32)));
tb.transfer_buffer = (void *)_transfer_buffer;
#ifdef USB_USE_RAMDISK
static unsigned char _ramdisk_buffer[RAMDISK_SIZE*SECTOR_SIZE];
ramdisk_buffer = _ramdisk_buffer;
#endif
#else
unsigned char * buffer;
// Add 31 to handle worst-case misalignment
usb_handle = core_alloc_ex(ALLOCATE_BUFFER_SIZE + MAX_CBW_SIZE + 31,
&buflib_ops_locked);
if (usb_handle < 0)
panicf("%s(): OOM", __func__);
buffer = core_get_data(usb_handle);
#if defined(UNCACHED_ADDR) && CONFIG_CPU != AS3525
cbw_buffer = (void *)UNCACHED_ADDR((unsigned int)(buffer+31) & 0xffffffe0);
#else
cbw_buffer = (void *)((unsigned int)(buffer+31) & 0xffffffe0);
#endif
tb.transfer_buffer = cbw_buffer + MAX_CBW_SIZE;
commit_discard_dcache();
#ifdef USB_USE_RAMDISK
ramdisk_buffer = tb.transfer_buffer + ALLOCATE_BUFFER_SIZE;
#endif
#endif
usb_drv_recv_nonblocking(ep_out, cbw_buffer, MAX_CBW_SIZE);
int i;
for(i=0;i<storage_num_drives();i++) {
locked[i] = false;
ejected[i] = !check_disk_present(IF_MD(i));
queue_broadcast(SYS_USB_LUN_LOCKED, (i<<16)+0);
}
}
void usb_storage_disconnect(void)
{
#ifndef USB_STATIC_ALLOC
usb_handle = core_free(usb_handle);
#endif
}
/* called by usb_core_transfer_complete() */
void usb_storage_transfer_complete(int ep,int dir,int status,int length)
{
(void)ep;
struct command_block_wrapper* cbw = (void*)cbw_buffer;
#if CONFIG_RTC
struct tm tm;
#endif
logf("transfer result for ep %d/%d %X %d", ep,dir,status, length);
switch(state) {
case RECEIVING_BLOCKS:
if(dir==USB_DIR_IN) {
logf("IN received in RECEIVING");
}
logf("scsi write %llu %d", cur_cmd.sector, cur_cmd.count);
if(status==0) {
if((unsigned int)length!=(cur_cmd.block_size* cur_cmd.count)
&& (unsigned int)length!=WRITE_BUFFER_SIZE) {
logf("unexpected length :%d",length);
break;
}
sector_t next_sector = cur_cmd.sector +
(WRITE_BUFFER_SIZE/cur_cmd.block_size);
unsigned int next_count = cur_cmd.count -
MIN(cur_cmd.count,WRITE_BUFFER_SIZE/cur_cmd.block_size);
int next_select = !cur_cmd.data_select;
if(next_count!=0) {
/* Ask the host to send more, to the other buffer */
receive_block_data(cur_cmd.data[next_select],
MIN(WRITE_BUFFER_SIZE,next_count*cur_cmd.block_size));
}
/* Now write the data that just came in, while the host is
sending the next bit */
#ifdef USB_USE_RAMDISK
memcpy(ramdisk_buffer + cur_cmd.sector*cur_cmd.block_size,
cur_cmd.data[cur_cmd.data_select],
MIN(WRITE_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count)*cur_cmd.block_size);
#else
int result = USBSTOR_WRITE_SECTORS_FILTER();
if (result == 0) {
result = storage_write_sectors(IF_MD(cur_cmd.lun,)
cur_cmd.sector,
MIN(WRITE_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count),
cur_cmd.data[cur_cmd.data_select]);
}
if(result != 0) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_MEDIUM_ERROR;
cur_sense_data.asc=ASC_WRITE_ERROR;
cur_sense_data.ascq=0;
break;
}
#endif
if(next_count==0) {
send_csw(UMS_STATUS_GOOD);
}
/* Switch buffers for the next one */
cur_cmd.data_select=!cur_cmd.data_select;
cur_cmd.sector = next_sector;
cur_cmd.count = next_count;
}
else {
logf("Transfer failed %X",status);
send_csw(UMS_STATUS_FAIL);
/* TODO fill in cur_sense_data */
cur_sense_data.sense_key=0;
cur_sense_data.information=0;
cur_sense_data.asc=0;
cur_sense_data.ascq=0;
}
break;
case WAITING_FOR_CSW_COMPLETION_OR_COMMAND:
if(dir==USB_DIR_IN) {
/* This was the CSW */
state = WAITING_FOR_COMMAND;
}
else {
/* This was the command */
state = WAITING_FOR_CSW_COMPLETION;
/* We now have the CBW, but we won't execute it yet to avoid
* issues with the still-pending CSW */
}
break;
case WAITING_FOR_COMMAND:
if(dir==USB_DIR_IN) {
logf("IN received in WAITING_FOR_COMMAND");
}
handle_scsi(cbw);
break;
case WAITING_FOR_CSW_COMPLETION:
if(dir==USB_DIR_OUT) {
logf("OUT received in WAITING_FOR_CSW_COMPLETION");
}
handle_scsi(cbw);
break;
case SENDING_RESULT:
if(dir==USB_DIR_OUT) {
logf("OUT received in SENDING");
}
if(status==0) {
//logf("data sent, now send csw");
send_csw(UMS_STATUS_GOOD);
}
else {
logf("Transfer failed %X",status);
send_csw(UMS_STATUS_FAIL);
/* TODO fill in cur_sense_data */
cur_sense_data.sense_key=0;
cur_sense_data.information=0;
cur_sense_data.asc=0;
cur_sense_data.ascq=0;
}
break;
case SENDING_FAILED_RESULT:
if(dir==USB_DIR_OUT) {
logf("OUT received in SENDING");
}
send_csw(UMS_STATUS_FAIL);
break;
case SENDING_BLOCKS:
if(dir==USB_DIR_OUT) {
logf("OUT received in SENDING");
}
if(status==0) {
if(cur_cmd.count==0) {
//logf("data sent, now send csw");
if(cur_cmd.last_result!=0) {
/* The last read failed. */
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_MEDIUM_ERROR;
cur_sense_data.asc=ASC_READ_ERROR;
cur_sense_data.ascq=0;
return;
}
else
send_csw(UMS_STATUS_GOOD);
}
else {
send_and_read_next();
}
}
else {
logf("Transfer failed %X",status);
send_csw(UMS_STATUS_FAIL);
/* TODO fill in cur_sense_data */
cur_sense_data.sense_key=0;
cur_sense_data.information=0;
cur_sense_data.asc=0;
cur_sense_data.ascq=0;
}
break;
#if CONFIG_RTC
case RECEIVING_TIME:
tm.tm_year=(tb.transfer_buffer[0]<<8)+tb.transfer_buffer[1] - 1900;
tm.tm_yday=(tb.transfer_buffer[2]<<8)+tb.transfer_buffer[3];
tm.tm_hour=tb.transfer_buffer[5];
tm.tm_min=tb.transfer_buffer[6];
tm.tm_sec=tb.transfer_buffer[7];
yearday_to_daymonth(tm.tm_yday,tm.tm_year + 1900,&tm.tm_mday,&tm.tm_mon);
set_day_of_week(&tm);
set_time(&tm);
send_csw(UMS_STATUS_GOOD);
break;
#endif /* CONFIG_RTC */
}
}
/* called by usb_core_control_request() */
bool usb_storage_control_request(struct usb_ctrlrequest* req, void* reqdata, unsigned char* dest)
{
bool handled = false;
(void)dest;
(void)reqdata;
switch (req->bRequest) {
case USB_BULK_GET_MAX_LUN: {
*tb.max_lun = storage_num_drives() - 1;
#if defined(HAVE_MULTIDRIVE)
if(skip_first) (*tb.max_lun) --;
#endif
logf("ums: getmaxlun");
usb_drv_control_response(USB_CONTROL_ACK, tb.max_lun, 1);
handled = true;
break;
}
case USB_BULK_RESET_REQUEST:
logf("ums: bulk reset");
state = WAITING_FOR_COMMAND;
/* UMS BOT 3.1 says The device shall preserve the value of its bulk
data toggle bits and endpoint STALL conditions despite
the Bulk-Only Mass Storage Reset. */
#if 0
usb_drv_reset_endpoint(ep_in, false);
usb_drv_reset_endpoint(ep_out, true);
#endif
usb_drv_control_response(USB_CONTROL_ACK, NULL, 0);
handled = true;
break;
}
return handled;
}
static void send_and_read_next(void)
{
int result = USBSTOR_READ_SECTORS_FILTER();
if(result != 0 && cur_cmd.last_result == 0)
cur_cmd.last_result = result;
send_block_data(cur_cmd.data[cur_cmd.data_select],
MIN(READ_BUFFER_SIZE,cur_cmd.count*cur_cmd.block_size));
/* Switch buffers for the next one */
cur_cmd.data_select=!cur_cmd.data_select;
cur_cmd.sector+=(READ_BUFFER_SIZE/cur_cmd.block_size);
cur_cmd.count-=MIN(cur_cmd.count,READ_BUFFER_SIZE/cur_cmd.block_size);
if(cur_cmd.count!=0) {
/* already read the next bit, so we can send it out immediately when the
* current transfer completes. */
#ifdef USB_USE_RAMDISK
memcpy(cur_cmd.data[cur_cmd.data_select],
ramdisk_buffer + cur_cmd.sector*cur_cmd.block_size,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count)*cur_cmd.block_size);
#else
result = storage_read_sectors(IF_MD(cur_cmd.lun,)
cur_cmd.sector,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count),
cur_cmd.data[cur_cmd.data_select]);
if(cur_cmd.last_result == 0)
cur_cmd.last_result = result;
#endif
}
}
/****************************************************************************/
static void handle_scsi(struct command_block_wrapper* cbw)
{
struct storage_info info;
unsigned int length = cbw->data_transfer_length;
sector_t block_count;
unsigned int block_size;
bool lun_present=true;
unsigned char lun = cbw->lun;
if(letoh32(cbw->signature) != CBW_SIGNATURE) {
logf("ums: bad cbw signature (%x)", cbw->signature);
usb_drv_stall(ep_in, true,true);
usb_drv_stall(ep_out, true,false);
return;
}
/* Clear the signature to prevent possible bugs elsewhere
* to trigger a second execution of the same command with
* bogus data */
cbw->signature=0;
#if defined(HAVE_MULTIDRIVE)
if(skip_first) lun++;
#endif
storage_get_info(lun,&info);
#ifdef USB_USE_RAMDISK
block_size = SECTOR_SIZE;
block_count = RAMDISK_SIZE;
#else
block_size=info.sector_size;
block_count=info.num_sectors;
#endif
#ifdef HAVE_HOTSWAP
if(storage_removable(lun) && !storage_present(lun)) {
ejected[lun] = true;
}
#endif
if(ejected[lun])
lun_present = false;
unsigned int block_size_mult = 1; /* Number of LOGICAL storage device blocks in each USB block */
#ifdef MAX_VIRT_SECTOR_SIZE
block_size_mult = disk_get_sector_multiplier(IF_MD(lun));
#endif
uint32_t bsize = block_size*block_size_mult;
sector_t bcount = block_count/block_size_mult;
cur_cmd.tag = cbw->tag;
cur_cmd.lun = lun;
cur_cmd.cur_cmd = cbw->command_block[0];
switch (cbw->command_block[0]) {
case SCSI_TEST_UNIT_READY:
logf("scsi test_unit_ready %d",lun);
if(!usb_exclusive_storage()) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
if(lun_present) {
send_csw(UMS_STATUS_GOOD);
}
else {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
}
break;
case SCSI_REPORT_LUNS: {
logf("scsi report luns %d",lun);
unsigned int allocation_length=0;
int i;
unsigned int response_length = 8+8*storage_num_drives();
allocation_length|=(cbw->command_block[6]<<24);
allocation_length|=(cbw->command_block[7]<<16);
allocation_length|=(cbw->command_block[8]<<8);
allocation_length|=(cbw->command_block[9]);
memset(tb.lun_data,0,sizeof(struct report_lun_data));
tb.lun_data->lun_list_length=htobe32(8*storage_num_drives());
for(i=0;i<storage_num_drives();i++)
{
#ifdef HAVE_HOTSWAP
if(storage_removable(i))
tb.lun_data->luns[i][1]=1;
else
#endif
tb.lun_data->luns[i][1]=0;
}
length = MIN(length, allocation_length);
send_command_result(tb.lun_data,
MIN(response_length, length));
break;
}
case SCSI_INQUIRY:
logf("scsi inquiry %d",lun);
fill_inquiry(IF_MD(lun));
length = MIN(length, cbw->command_block[4]);
send_command_result(tb.inquiry,
MIN(sizeof(struct inquiry_data), length));
break;
case SCSI_REQUEST_SENSE: {
tb.sense_data->ResponseCode=0x70;/*current error*/
tb.sense_data->Obsolete=0;
tb.sense_data->fei_sensekey=cur_sense_data.sense_key&0x0f;
tb.sense_data->Information=cur_sense_data.information;
tb.sense_data->AdditionalSenseLength=10;
tb.sense_data->CommandSpecificInformation=0;
tb.sense_data->AdditionalSenseCode=cur_sense_data.asc;
tb.sense_data->AdditionalSenseCodeQualifier=cur_sense_data.ascq;
tb.sense_data->FieldReplaceableUnitCode=0;
tb.sense_data->SKSV=0;
tb.sense_data->SenseKeySpecific=0;
logf("scsi request_sense %d",lun);
send_command_result(tb.sense_data,
MIN(sizeof(struct sense_data), length));
break;
}
case SCSI_MODE_SENSE_10: {
if(!lun_present) {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
/*unsigned char pc = (cbw->command_block[2] & 0xc0) >>6;*/
unsigned char page_code = cbw->command_block[2] & 0x3f;
logf("scsi mode_sense_10 %d %X",lun,page_code);
switch(page_code) {
case 0x3f:
tb.ms_data_10->mode_data_length =
htobe16(sizeof(struct mode_sense_data_10)-2);
tb.ms_data_10->medium_type = 0;
tb.ms_data_10->device_specific = 0;
tb.ms_data_10->reserved = 0;
tb.ms_data_10->longlba = 1;
tb.ms_data_10->block_descriptor_length =
htobe16(sizeof(struct mode_sense_bdesc_longlba));
memset(tb.ms_data_10->block_descriptor.reserved,0,4);
#ifdef STORAGE_64BIT_SECTOR
tb.ms_data_10->block_descriptor.num_blocks[2] =
(bcount & 0xff00000000ULL)>>40;
tb.ms_data_10->block_descriptor.num_blocks[3] =
(bcount & 0x00ff000000ULL)>>32;
#else
tb.ms_data_10->block_descriptor.num_blocks[2] = 0;
tb.ms_data_10->block_descriptor.num_blocks[3] = 0;
#endif
tb.ms_data_10->block_descriptor.num_blocks[4] =
(bcount & 0xff000000)>>24;
tb.ms_data_10->block_descriptor.num_blocks[5] =
(bcount & 0x00ff0000)>>16;
tb.ms_data_10->block_descriptor.num_blocks[6] =
(bcount & 0x0000ff00)>>8;
tb.ms_data_10->block_descriptor.num_blocks[7] =
(bcount & 0x000000ff);
tb.ms_data_10->block_descriptor.block_size[0] =
(bsize & 0xff000000)>>24;
tb.ms_data_10->block_descriptor.block_size[1] =
(bsize & 0x00ff0000)>>16;
tb.ms_data_10->block_descriptor.block_size[2] =
(bsize & 0x0000ff00)>>8;
tb.ms_data_10->block_descriptor.block_size[3] =
(bsize & 0x000000ff);
send_command_result(tb.ms_data_10,
MIN(sizeof(struct mode_sense_data_10), length));
break;
default:
send_command_failed_result();
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_INVALID_FIELD_IN_CBD;
cur_sense_data.ascq=0;
break;
}
break;
}
case SCSI_MODE_SENSE_6: {
if(!lun_present) {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
/*unsigned char pc = (cbw->command_block[2] & 0xc0) >>6;*/
unsigned char page_code = cbw->command_block[2] & 0x3f;
logf("scsi mode_sense_6 %d %X",lun,page_code);
switch(page_code) {
case 0x3f:
/* All supported pages. */
tb.ms_data_6->mode_data_length =
sizeof(struct mode_sense_data_6)-1;
tb.ms_data_6->medium_type = 0;
tb.ms_data_6->device_specific = 0;
tb.ms_data_6->block_descriptor_length =
sizeof(struct mode_sense_bdesc_shortlba);
tb.ms_data_6->block_descriptor.density_code = 0;
tb.ms_data_6->block_descriptor.reserved = 0;
if(bcount > 0xffffff) {
tb.ms_data_6->block_descriptor.num_blocks[0] = 0xff;
tb.ms_data_6->block_descriptor.num_blocks[1] = 0xff;
tb.ms_data_6->block_descriptor.num_blocks[2] = 0xff;
} else {
tb.ms_data_6->block_descriptor.num_blocks[0] =
(bcount & 0xff0000)>>16;
tb.ms_data_6->block_descriptor.num_blocks[1] =
(bcount & 0x00ff00)>>8;
tb.ms_data_6->block_descriptor.num_blocks[2] =
(bcount & 0x0000ff);
}
tb.ms_data_6->block_descriptor.block_size[0] =
(bsize & 0xff0000)>>16;
tb.ms_data_6->block_descriptor.block_size[1] =
(bsize & 0x00ff00)>>8;
tb.ms_data_6->block_descriptor.block_size[2] =
(bsize & 0x0000ff);
send_command_result(tb.ms_data_6,
MIN(sizeof(struct mode_sense_data_6), length));
break;
default:
send_command_failed_result();
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_INVALID_FIELD_IN_CBD;
cur_sense_data.ascq=0;
break;
}
break;
}
case SCSI_START_STOP_UNIT:
logf("scsi start_stop unit %d",lun);
if((cbw->command_block[4] & 0xf0) == 0) /*load/eject bit is valid*/
{ /* Process start and eject bits */
logf("scsi load/eject");
if((cbw->command_block[4] & 0x01) == 0) /* Don't start */
{
if((cbw->command_block[4] & 0x02) != 0) /* eject */
{
logf("scsi eject");
ejected[lun]=true;
}
}
}
send_csw(UMS_STATUS_GOOD);
break;
case SCSI_ALLOW_MEDIUM_REMOVAL:
logf("scsi allow_medium_removal %d",lun);
if((cbw->command_block[4] & 0x03) == 0) {
locked[lun]=false;
queue_broadcast(SYS_USB_LUN_LOCKED, (lun<<16)+0);
}
else {
locked[lun]=true;
queue_broadcast(SYS_USB_LUN_LOCKED, (lun<<16)+1);
}
send_csw(UMS_STATUS_GOOD);
break;
case USB_UFI_READ_FORMAT_CAPACITY: {
logf("usb ufi read_format_capacity %d",lun);
if(lun_present) {
tb.format_capacity_data->following_length=htobe32(8);
/* "block count" actually means "number of last block" */
if (bcount > 0xffffffff)
tb.format_capacity_data->block_count = 0xffffffff;
else
tb.format_capacity_data->block_count = htobe32(bcount - 1);
tb.format_capacity_data->block_size = htobe32(bsize);
tb.format_capacity_data->block_size |=
htobe32(SCSI_FORMAT_CAPACITY_FORMATTED_MEDIA);
send_command_result(tb.format_capacity_data,
MIN(sizeof(struct format_capacity), length));
}
else {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
}
break;
}
case SCSI_READ_CAPACITY_10: {
logf("scsi read_capacity10 %d",lun);
if(lun_present) {
/* "block count" actually means "number of last block" */
if (bcount >= 0xffffffff) {
tb.capacity_data_10->block_count[0] = 0xff;
tb.capacity_data_10->block_count[1] = 0xff;
tb.capacity_data_10->block_count[2] = 0xff;
tb.capacity_data_10->block_count[3] = 0xff;
} else {
tb.capacity_data_10->block_count[0] = ((bcount-1) & 0xff000000)>>24;
tb.capacity_data_10->block_count[1] = ((bcount-1) & 0x00ff0000)>>16;
tb.capacity_data_10->block_count[2] = ((bcount-1) & 0x0000ff00)>>8;
tb.capacity_data_10->block_count[3] = ((bcount-1) & 0x000000ff);
}
tb.capacity_data_10->block_size[0] = (bsize & 0xff000000)>>24;
tb.capacity_data_10->block_size[1] = (bsize & 0x00ff0000)>>16;
tb.capacity_data_10->block_size[2] = (bsize & 0x0000ff00)>>8;
tb.capacity_data_10->block_size[3] = (bsize & 0x000000ff);
send_command_result(tb.capacity_data_10,
MIN(sizeof(struct capacity_10), length));
} else {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
}
break;
}
case SCSI_READ_CAPACITY_16: {
logf("scsi read_capacity16 %d",lun);
if(lun_present) {
/* "block count" actually means "number of last block" */
#ifdef STORAGE_64BIT_SECTOR
tb.capacity_data_16->block_count[2] =
((bcount-1) & 0xff00000000ULL)>>40;
tb.capacity_data_16->block_count[3] =
((bcount-1) & 0x00ff000000ULL)>>32;
#else
tb.capacity_data_16->block_count[2] = 0;
tb.capacity_data_16->block_count[3] = 0;
#endif
tb.capacity_data_16->block_count[4] =
((bcount-1) & 0xff000000)>>24;
tb.capacity_data_16->block_count[5] =
((bcount-1) & 0x00ff0000)>>16;
tb.capacity_data_16->block_count[6] =
((bcount-1) & 0x0000ff00)>>8;
tb.capacity_data_16->block_count[7] =
((bcount-1) & 0x000000ff);
tb.ms_data_10->block_descriptor.block_size[0] =
(bsize & 0xff000000)>>24;
tb.ms_data_10->block_descriptor.block_size[1] =
(bsize & 0x00ff0000)>>16;
tb.ms_data_10->block_descriptor.block_size[2] =
(bsize & 0x0000ff00)>>8;
tb.ms_data_10->block_descriptor.block_size[3] =
(bsize & 0x000000ff);
tb.capacity_data_16->block_size[0] = (bsize & 0xff000000)>>24;
tb.capacity_data_16->block_size[1] = (bsize & 0x00ff0000)>>16;
tb.capacity_data_16->block_size[2] = (bsize & 0x0000ff00)>>8;
tb.capacity_data_16->block_size[3] = (bsize & 0x000000ff);
uint16_t flags = htobe16((1<<12) | find_first_set_bit(block_size_mult));
memcpy(tb.capacity_data_16->flags, &flags, sizeof(flags));
tb.capacity_data_16->lowest_aligned_lba[0] = 0;
tb.capacity_data_16->lowest_aligned_lba[1] = 1;
send_command_result(tb.capacity_data_16,
MIN(sizeof(struct capacity_16), length));
} else {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
}
break;
}
case SCSI_READ_10:
logf("scsi read10 %d",lun);
if(!lun_present) {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
cur_cmd.data[0] = tb.transfer_buffer;
cur_cmd.data[1] = &tb.transfer_buffer[READ_BUFFER_SIZE];
cur_cmd.data_select=0;
cur_cmd.sector = block_size_mult *
(cbw->command_block[2] << 24 |
cbw->command_block[3] << 16 |
cbw->command_block[4] << 8 |
cbw->command_block[5] );
cur_cmd.count = block_size_mult *
(cbw->command_block[7] << 8 |
cbw->command_block[8]);
cur_cmd.block_size = block_size;
logf("scsi read %llu %d", cur_cmd.sector, cur_cmd.count);
if((cur_cmd.sector + cur_cmd.count) > block_count) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_LBA_OUT_OF_RANGE;
cur_sense_data.ascq=0;
}
else {
#ifdef USB_USE_RAMDISK
memcpy(cur_cmd.data[cur_cmd.data_select],
ramdisk_buffer + cur_cmd.sector*cur_cmd.block_size,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size,cur_cmd.count)*cur_cmd.block_size);
#else
cur_cmd.last_result = storage_read_sectors(IF_MD(cur_cmd.lun,)
cur_cmd.sector,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count),
cur_cmd.data[cur_cmd.data_select]);
#endif
send_and_read_next();
}
break;
#ifdef STORAGE_64BIT_SECTOR
case SCSI_READ_16:
logf("scsi read16 %d",lun);
if(!lun_present) {
send_command_failed_result();
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
cur_cmd.data[0] = tb.transfer_buffer;
cur_cmd.data[1] = &tb.transfer_buffer[READ_BUFFER_SIZE];
cur_cmd.data_select=0;
cur_cmd.sector = block_size_mult *
((uint64_t)cbw->command_block[2] << 56 |
(uint64_t)cbw->command_block[3] << 48 |
(uint64_t)cbw->command_block[4] << 40 |
(uint64_t)cbw->command_block[5] << 32 |
cbw->command_block[6] << 24 |
cbw->command_block[7] << 16 |
cbw->command_block[8] << 8 |
cbw->command_block[9]);
cur_cmd.count = block_size_mult *
(cbw->command_block[10] << 24 |
cbw->command_block[11] << 16 |
cbw->command_block[12] << 8 |
cbw->command_block[13]);
cur_cmd.block_size = block_size;
logf("scsi read %llu %d", cur_cmd.sector, cur_cmd.count);
if((cur_cmd.sector + cur_cmd.count) > block_count) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_LBA_OUT_OF_RANGE;
cur_sense_data.ascq=0;
}
else {
#ifdef USB_USE_RAMDISK
memcpy(cur_cmd.data[cur_cmd.data_select],
ramdisk_buffer + cur_cmd.sector*cur_cmd.block_size,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size,cur_cmd.count)*cur_cmd.block_size);
#else
cur_cmd.last_result = storage_read_sectors(IF_MD(cur_cmd.lun,)
cur_cmd.sector,
MIN(READ_BUFFER_SIZE/cur_cmd.block_size, cur_cmd.count),
cur_cmd.data[cur_cmd.data_select]);
#endif
send_and_read_next();
}
break;
#endif
case SCSI_WRITE_10:
logf("scsi write10 %d",lun);
if(!lun_present) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
cur_cmd.data[0] = tb.transfer_buffer;
cur_cmd.data[1] = &tb.transfer_buffer[WRITE_BUFFER_SIZE];
cur_cmd.data_select=0;
cur_cmd.sector = block_size_mult *
(cbw->command_block[2] << 24 |
cbw->command_block[3] << 16 |
cbw->command_block[4] << 8 |
cbw->command_block[5] );
cur_cmd.count = block_size_mult *
(cbw->command_block[7] << 8 |
cbw->command_block[8]);
cur_cmd.block_size = block_size;
/* expect data */
if((cur_cmd.sector + cur_cmd.count) > block_count) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_LBA_OUT_OF_RANGE;
cur_sense_data.ascq=0;
}
else {
receive_block_data(cur_cmd.data[0],
MIN(WRITE_BUFFER_SIZE, cur_cmd.count*cur_cmd.block_size));
}
break;
#ifdef STORAGE_64BIT_SECTOR
case SCSI_WRITE_16:
logf("scsi write16 %d",lun);
if(!lun_present) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_NOT_READY;
cur_sense_data.asc=ASC_MEDIUM_NOT_PRESENT;
cur_sense_data.ascq=0;
break;
}
cur_cmd.data[0] = tb.transfer_buffer;
cur_cmd.data[1] = &tb.transfer_buffer[WRITE_BUFFER_SIZE];
cur_cmd.data_select=0;
cur_cmd.sector = block_size_mult *
((uint64_t)cbw->command_block[2] << 56 |
(uint64_t)cbw->command_block[3] << 48 |
(uint64_t)cbw->command_block[4] << 40 |
(uint64_t)cbw->command_block[5] << 32 |
cbw->command_block[6] << 24 |
cbw->command_block[7] << 16 |
cbw->command_block[8] << 8 |
cbw->command_block[9]);
cur_cmd.count = block_size_mult *
(cbw->command_block[10] << 24 |
cbw->command_block[11] << 16 |
cbw->command_block[12] << 8 |
cbw->command_block[13]);
cur_cmd.block_size = block_size;
/* expect data */
if((cur_cmd.sector + cur_cmd.count) > block_count) {
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_LBA_OUT_OF_RANGE;
cur_sense_data.ascq=0;
}
else {
receive_block_data(cur_cmd.data[0],
MIN(WRITE_BUFFER_SIZE, cur_cmd.count*cur_cmd.block_size));
}
break;
#endif
#if CONFIG_RTC
case SCSI_WRITE_BUFFER:
if(cbw->command_block[1]==1 /* mode = vendor specific */
&& cbw->command_block[2]==0 /* buffer id = 0 */
&& cbw->command_block[3]==0x0c /* offset (3 bytes) */
&& cbw->command_block[4]==0
&& cbw->command_block[5]==0
/* Some versions of itunes set the parameter list length to 0.
* Technically it should be 0x0c, which is what libgpod sends */
&& cbw->command_block[6]==0 /* parameter list (3 bytes) */
&& cbw->command_block[7]==0
&& (cbw->command_block[8]==0 || cbw->command_block[8]==0x0c)
&& cbw->command_block[9]==0)
receive_time();
break;
#endif /* CONFIG_RTC */
default:
logf("scsi unknown cmd %x",cbw->command_block[0x0]);
send_csw(UMS_STATUS_FAIL);
cur_sense_data.sense_key=SENSE_ILLEGAL_REQUEST;
cur_sense_data.asc=ASC_INVALID_COMMAND;
cur_sense_data.ascq=0;
break;
}
}
static void send_block_data(void *data,int size)
{
usb_drv_send_nonblocking(ep_in, data,size);
state = SENDING_BLOCKS;
}
static void send_command_result(void *data,int size)
{
usb_drv_send_nonblocking(ep_in, data,size);
state = SENDING_RESULT;
}
static void send_command_failed_result(void)
{
usb_drv_send_nonblocking(ep_in, NULL, 0);
state = SENDING_FAILED_RESULT;
}
#if CONFIG_RTC
static void receive_time(void)
{
usb_drv_recv_nonblocking(ep_out, tb.transfer_buffer, 12);
state = RECEIVING_TIME;
}
#endif /* CONFIG_RTC */
static void receive_block_data(void *data,int size)
{
usb_drv_recv_nonblocking(ep_out, data, size);
state = RECEIVING_BLOCKS;
}
static void send_csw(int status)
{
tb.csw->signature = htole32(CSW_SIGNATURE);
tb.csw->tag = cur_cmd.tag;
tb.csw->data_residue = 0;
tb.csw->status = status;
usb_drv_send_nonblocking(ep_in, tb.csw,
sizeof(struct command_status_wrapper));
state = WAITING_FOR_CSW_COMPLETION_OR_COMMAND;
//logf("CSW: %X",status);
/* Already start waiting for the next command */
usb_drv_recv_nonblocking(ep_out, cbw_buffer, MAX_CBW_SIZE);
/* The next completed transfer will be either the CSW one
* or the new command */
if(status == UMS_STATUS_GOOD) {
cur_sense_data.sense_key=0;
cur_sense_data.information=0;
cur_sense_data.asc=0;
cur_sense_data.ascq=0;
}
}
static void copy_padded(char *dest, char *src, int len)
{
for (int i = 0; i < len; i++) {
if (src[i] == '\0') {
memset(&dest[i], ' ', len - i);
return;
}
dest[i] = src[i];
}
}
/* build SCSI INQUIRY */
static void fill_inquiry(IF_MD_NONVOID(int lun))
{
struct storage_info info;
memset(tb.inquiry, 0, sizeof(struct inquiry_data));
storage_get_info(lun,&info);
copy_padded(tb.inquiry->VendorId,info.vendor,sizeof(tb.inquiry->VendorId));
copy_padded(tb.inquiry->ProductId,info.product,sizeof(tb.inquiry->ProductId));
copy_padded(tb.inquiry->ProductRevisionLevel,info.revision,sizeof(tb.inquiry->ProductRevisionLevel));
tb.inquiry->DeviceType = DIRECT_ACCESS_DEVICE;
tb.inquiry->AdditionalLength = 0x1f;
// memset(tb.inquiry->Reserved, 0, sizeof(tb.inquiry->Reserved)); // Redundant
tb.inquiry->Versions = 4; /* SPC-2 */
tb.inquiry->Format = 2; /* SPC-2/3 inquiry format */
tb.inquiry->DeviceTypeModifier = DEVICE_REMOVABLE;
}
|