summaryrefslogtreecommitdiff
path: root/drivers/scsi/qla2xxx/qla_target.h
blob: ff9ccb9fd036f446fceef58b464bff7f0dfa374c (plain)
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
/*
 *  Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
 *  Copyright (C) 2004 - 2005 Leonid Stoljar
 *  Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
 *  Copyright (C) 2007 - 2010 ID7 Ltd.
 *
 *  Forward port and refactoring to modern qla2xxx and target/configfs
 *
 *  Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
 *
 *  Additional file for the target driver support.
 *
 *  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 program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 */
/*
 * This is the global def file that is useful for including from the
 * target portion.
 */

#ifndef __QLA_TARGET_H
#define __QLA_TARGET_H

#include "qla_def.h"

/*
 * Must be changed on any change in any initiator visible interfaces or
 * data in the target add-on
 */
#define QLA2XXX_TARGET_MAGIC	269

/*
 * Must be changed on any change in any target visible interfaces or
 * data in the initiator
 */
#define QLA2XXX_INITIATOR_MAGIC   57222

#define QLA2XXX_INI_MODE_STR_EXCLUSIVE	"exclusive"
#define QLA2XXX_INI_MODE_STR_DISABLED	"disabled"
#define QLA2XXX_INI_MODE_STR_ENABLED	"enabled"

#define QLA2XXX_INI_MODE_EXCLUSIVE	0
#define QLA2XXX_INI_MODE_DISABLED	1
#define QLA2XXX_INI_MODE_ENABLED	2

#define QLA2XXX_COMMAND_COUNT_INIT	250
#define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250

/*
 * Used to mark which completion handles (for RIO Status's) are for CTIO's
 * vs. regular (non-target) info. This is checked for in
 * qla2x00_process_response_queue() to see if a handle coming back in a
 * multi-complete should come to the tgt driver or be handled there by qla2xxx
 */
#define CTIO_COMPLETION_HANDLE_MARK	BIT_29
#if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS)
#error "CTIO_COMPLETION_HANDLE_MARK not larger than "
	"DEFAULT_OUTSTANDING_COMMANDS"
#endif
#define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)

/* Used to mark CTIO as intermediate */
#define CTIO_INTERMEDIATE_HANDLE_MARK	BIT_30

#ifndef OF_SS_MODE_0
/*
 * ISP target entries - Flags bit definitions.
 */
#define OF_SS_MODE_0        0
#define OF_SS_MODE_1        1
#define OF_SS_MODE_2        2
#define OF_SS_MODE_3        3

#define OF_EXPL_CONF        BIT_5       /* Explicit Confirmation Requested */
#define OF_DATA_IN          BIT_6       /* Data in to initiator */
					/*  (data from target to initiator) */
#define OF_DATA_OUT         BIT_7       /* Data out from initiator */
					/*  (data from initiator to target) */
#define OF_NO_DATA          (BIT_7 | BIT_6)
#define OF_INC_RC           BIT_8       /* Increment command resource count */
#define OF_FAST_POST        BIT_9       /* Enable mailbox fast posting. */
#define OF_CONF_REQ         BIT_13      /* Confirmation Requested */
#define OF_TERM_EXCH        BIT_14      /* Terminate exchange */
#define OF_SSTS             BIT_15      /* Send SCSI status */
#endif

#ifndef QLA_TGT_DATASEGS_PER_CMD32
#define QLA_TGT_DATASEGS_PER_CMD32	3
#define QLA_TGT_DATASEGS_PER_CONT32	7
#define QLA_TGT_MAX_SG32(ql) \
	(((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \
		QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)

#define QLA_TGT_DATASEGS_PER_CMD64	2
#define QLA_TGT_DATASEGS_PER_CONT64	5
#define QLA_TGT_MAX_SG64(ql) \
	(((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \
		QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
#endif

#ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
#define QLA_TGT_DATASEGS_PER_CMD_24XX	1
#define QLA_TGT_DATASEGS_PER_CONT_24XX	5
#define QLA_TGT_MAX_SG_24XX(ql) \
	(min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \
		QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
#endif
#endif

#define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha))			\
			 ? le16_to_cpu((iocb)->u.isp2x.target.extended)	\
			 : (uint16_t)(iocb)->u.isp2x.target.id.standard)

#ifndef IMMED_NOTIFY_TYPE
#define IMMED_NOTIFY_TYPE 0x0D		/* Immediate notify entry. */
/*
 * ISP queue -	immediate notify entry structure definition.
 *		This is sent by the ISP to the Target driver.
 *		This IOCB would have report of events sent by the
 *		initiator, that needs to be handled by the target
 *		driver immediately.
 */
struct imm_ntfy_from_isp {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	union {
		struct {
			uint32_t sys_define_2; /* System defined. */
			target_id_t target;
			uint16_t lun;
			uint8_t  target_id;
			uint8_t  reserved_1;
			uint16_t status_modifier;
			uint16_t status;
			uint16_t task_flags;
			uint16_t seq_id;
			uint16_t srr_rx_id;
			uint32_t srr_rel_offs;
			uint16_t srr_ui;
#define SRR_IU_DATA_IN	0x1
#define SRR_IU_DATA_OUT	0x5
#define SRR_IU_STATUS	0x7
			uint16_t srr_ox_id;
			uint8_t reserved_2[28];
		} isp2x;
		struct {
			uint32_t reserved;
			uint16_t nport_handle;
			uint16_t reserved_2;
			uint16_t flags;
#define NOTIFY24XX_FLAGS_GLOBAL_TPRLO   BIT_1
#define NOTIFY24XX_FLAGS_PUREX_IOCB     BIT_0
			uint16_t srr_rx_id;
			uint16_t status;
			uint8_t  status_subcode;
			uint8_t  fw_handle;
			uint32_t exchange_address;
			uint32_t srr_rel_offs;
			uint16_t srr_ui;
			uint16_t srr_ox_id;
			uint8_t  reserved_4[19];
			uint8_t  vp_index;
			uint32_t reserved_5;
			uint8_t  port_id[3];
			uint8_t  reserved_6;
		} isp24;
	} u;
	uint16_t reserved_7;
	uint16_t ox_id;
} __packed;
#endif

#ifndef NOTIFY_ACK_TYPE
#define NOTIFY_ACK_TYPE 0x0E	  /* Notify acknowledge entry. */
/*
 * ISP queue -	notify acknowledge entry structure definition.
 *		This is sent to the ISP from the target driver.
 */
struct nack_to_isp {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	union {
		struct {
			uint32_t sys_define_2; /* System defined. */
			target_id_t target;
			uint8_t	 target_id;
			uint8_t	 reserved_1;
			uint16_t flags;
			uint16_t resp_code;
			uint16_t status;
			uint16_t task_flags;
			uint16_t seq_id;
			uint16_t srr_rx_id;
			uint32_t srr_rel_offs;
			uint16_t srr_ui;
			uint16_t srr_flags;
			uint16_t srr_reject_code;
			uint8_t  srr_reject_vendor_uniq;
			uint8_t  srr_reject_code_expl;
			uint8_t  reserved_2[24];
		} isp2x;
		struct {
			uint32_t handle;
			uint16_t nport_handle;
			uint16_t reserved_1;
			uint16_t flags;
			uint16_t srr_rx_id;
			uint16_t status;
			uint8_t  status_subcode;
			uint8_t  fw_handle;
			uint32_t exchange_address;
			uint32_t srr_rel_offs;
			uint16_t srr_ui;
			uint16_t srr_flags;
			uint8_t  reserved_4[19];
			uint8_t  vp_index;
			uint8_t  srr_reject_vendor_uniq;
			uint8_t  srr_reject_code_expl;
			uint8_t  srr_reject_code;
			uint8_t  reserved_5[5];
		} isp24;
	} u;
	uint8_t  reserved[2];
	uint16_t ox_id;
} __packed;
#define NOTIFY_ACK_SRR_FLAGS_ACCEPT	0
#define NOTIFY_ACK_SRR_FLAGS_REJECT	1

#define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM	0x9

#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL		0
#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA	0x2a

#define NOTIFY_ACK_SUCCESS      0x01
#endif

#ifndef ACCEPT_TGT_IO_TYPE
#define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
#endif

#ifndef CONTINUE_TGT_IO_TYPE
#define CONTINUE_TGT_IO_TYPE 0x17
/*
 * ISP queue -	Continue Target I/O (CTIO) entry for status mode 0 structure.
 *		This structure is sent to the ISP 2xxx from target driver.
 */
struct ctio_to_2xxx {
	uint8_t	 entry_type;		/* Entry type. */
	uint8_t	 entry_count;		/* Entry count. */
	uint8_t	 sys_define;		/* System defined. */
	uint8_t	 entry_status;		/* Entry Status. */
	uint32_t handle;		/* System defined handle */
	target_id_t target;
	uint16_t rx_id;
	uint16_t flags;
	uint16_t status;
	uint16_t timeout;		/* 0 = 30 seconds, 0xFFFF = disable */
	uint16_t dseg_count;		/* Data segment count. */
	uint32_t relative_offset;
	uint32_t residual;
	uint16_t reserved_1[3];
	uint16_t scsi_status;
	uint32_t transfer_length;
	uint32_t dseg_0_address;	/* Data segment 0 address. */
	uint32_t dseg_0_length;		/* Data segment 0 length. */
	uint32_t dseg_1_address;	/* Data segment 1 address. */
	uint32_t dseg_1_length;		/* Data segment 1 length. */
	uint32_t dseg_2_address;	/* Data segment 2 address. */
	uint32_t dseg_2_length;		/* Data segment 2 length. */
} __packed;
#define ATIO_PATH_INVALID       0x07
#define ATIO_CANT_PROV_CAP      0x16
#define ATIO_CDB_VALID          0x3D

#define ATIO_EXEC_READ          BIT_1
#define ATIO_EXEC_WRITE         BIT_0
#endif

#ifndef CTIO_A64_TYPE
#define CTIO_A64_TYPE 0x1F
#define CTIO_SUCCESS			0x01
#define CTIO_ABORTED			0x02
#define CTIO_INVALID_RX_ID		0x08
#define CTIO_TIMEOUT			0x0B
#define CTIO_LIP_RESET			0x0E
#define CTIO_TARGET_RESET		0x17
#define CTIO_PORT_UNAVAILABLE		0x28
#define CTIO_PORT_LOGGED_OUT		0x29
#define CTIO_PORT_CONF_CHANGED		0x2A
#define CTIO_SRR_RECEIVED		0x45
#endif

#ifndef CTIO_RET_TYPE
#define CTIO_RET_TYPE	0x17		/* CTIO return entry */
#define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */

struct fcp_hdr {
	uint8_t  r_ctl;
	uint8_t  d_id[3];
	uint8_t  cs_ctl;
	uint8_t  s_id[3];
	uint8_t  type;
	uint8_t  f_ctl[3];
	uint8_t  seq_id;
	uint8_t  df_ctl;
	uint16_t seq_cnt;
	uint16_t ox_id;
	uint16_t rx_id;
	uint32_t parameter;
} __packed;

struct fcp_hdr_le {
	uint8_t  d_id[3];
	uint8_t  r_ctl;
	uint8_t  s_id[3];
	uint8_t  cs_ctl;
	uint8_t  f_ctl[3];
	uint8_t  type;
	uint16_t seq_cnt;
	uint8_t  df_ctl;
	uint8_t  seq_id;
	uint16_t rx_id;
	uint16_t ox_id;
	uint32_t parameter;
} __packed;

#define F_CTL_EXCH_CONTEXT_RESP	BIT_23
#define F_CTL_SEQ_CONTEXT_RESIP	BIT_22
#define F_CTL_LAST_SEQ		BIT_20
#define F_CTL_END_SEQ		BIT_19
#define F_CTL_SEQ_INITIATIVE	BIT_16

#define R_CTL_BASIC_LINK_SERV	0x80
#define R_CTL_B_ACC		0x4
#define R_CTL_B_RJT		0x5

struct atio7_fcp_cmnd {
	uint64_t lun;
	uint8_t  cmnd_ref;
	uint8_t  task_attr:3;
	uint8_t  reserved:5;
	uint8_t  task_mgmt_flags;
#define FCP_CMND_TASK_MGMT_CLEAR_ACA		6
#define FCP_CMND_TASK_MGMT_TARGET_RESET		5
#define FCP_CMND_TASK_MGMT_LU_RESET		4
#define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET	2
#define FCP_CMND_TASK_MGMT_ABORT_TASK_SET	1
	uint8_t  wrdata:1;
	uint8_t  rddata:1;
	uint8_t  add_cdb_len:6;
	uint8_t  cdb[16];
	/*
	 * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4
	 * only to make sizeof(struct atio7_fcp_cmnd) be as expected by
	 * BUILD_BUG_ON in qlt_init().
	 */
	uint8_t  add_cdb[4];
	/* uint32_t data_length; */
} __packed;

/*
 * ISP queue -	Accept Target I/O (ATIO) type entry IOCB structure.
 *		This is sent from the ISP to the target driver.
 */
struct atio_from_isp {
	union {
		struct {
			uint16_t entry_hdr;
			uint8_t  sys_define;   /* System defined. */
			uint8_t  entry_status; /* Entry Status.   */
			uint32_t sys_define_2; /* System defined. */
			target_id_t target;
			uint16_t rx_id;
			uint16_t flags;
			uint16_t status;
			uint8_t  command_ref;
			uint8_t  task_codes;
			uint8_t  task_flags;
			uint8_t  execution_codes;
			uint8_t  cdb[MAX_CMDSZ];
			uint32_t data_length;
			uint16_t lun;
			uint8_t  initiator_port_name[WWN_SIZE]; /* on qla23xx */
			uint16_t reserved_32[6];
			uint16_t ox_id;
		} isp2x;
		struct {
			uint16_t entry_hdr;
			uint8_t  fcp_cmnd_len_low;
			uint8_t  fcp_cmnd_len_high:4;
			uint8_t  attr:4;
			uint32_t exchange_addr;
#define ATIO_EXCHANGE_ADDRESS_UNKNOWN	0xFFFFFFFF
			struct fcp_hdr fcp_hdr;
			struct atio7_fcp_cmnd fcp_cmnd;
		} isp24;
		struct {
			uint8_t  entry_type;	/* Entry type. */
			uint8_t  entry_count;	/* Entry count. */
			uint8_t  data[58];
			uint32_t signature;
#define ATIO_PROCESSED 0xDEADDEAD		/* Signature */
		} raw;
	} u;
} __packed;

#define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */

/*
 * ISP queue -	Continue Target I/O (ATIO) type 7 entry (for 24xx) structure.
 *		This structure is sent to the ISP 24xx from the target driver.
 */

struct ctio7_to_24xx {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	uint32_t handle;		    /* System defined handle */
	uint16_t nport_handle;
#define CTIO7_NHANDLE_UNRECOGNIZED	0xFFFF
	uint16_t timeout;
	uint16_t dseg_count;		    /* Data segment count. */
	uint8_t  vp_index;
	uint8_t  add_flags;
	uint8_t  initiator_id[3];
	uint8_t  reserved;
	uint32_t exchange_addr;
	union {
		struct {
			uint16_t reserved1;
			uint16_t flags;
			uint32_t residual;
			uint16_t ox_id;
			uint16_t scsi_status;
			uint32_t relative_offset;
			uint32_t reserved2;
			uint32_t transfer_length;
			uint32_t reserved3;
			/* Data segment 0 address. */
			uint32_t dseg_0_address[2];
			/* Data segment 0 length. */
			uint32_t dseg_0_length;
		} status0;
		struct {
			uint16_t sense_length;
			uint16_t flags;
			uint32_t residual;
			uint16_t ox_id;
			uint16_t scsi_status;
			uint16_t response_len;
			uint16_t reserved;
			uint8_t sense_data[24];
		} status1;
	} u;
} __packed;

/*
 * ISP queue - CTIO type 7 from ISP 24xx to target driver
 * returned entry structure.
 */
struct ctio7_from_24xx {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	uint32_t handle;		    /* System defined handle */
	uint16_t status;
	uint16_t timeout;
	uint16_t dseg_count;		    /* Data segment count. */
	uint8_t  vp_index;
	uint8_t  reserved1[5];
	uint32_t exchange_address;
	uint16_t reserved2;
	uint16_t flags;
	uint32_t residual;
	uint16_t ox_id;
	uint16_t reserved3;
	uint32_t relative_offset;
	uint8_t  reserved4[24];
} __packed;

/* CTIO7 flags values */
#define CTIO7_FLAGS_SEND_STATUS		BIT_15
#define CTIO7_FLAGS_TERMINATE		BIT_14
#define CTIO7_FLAGS_CONFORM_REQ		BIT_13
#define CTIO7_FLAGS_DONT_RET_CTIO	BIT_8
#define CTIO7_FLAGS_STATUS_MODE_0	0
#define CTIO7_FLAGS_STATUS_MODE_1	BIT_6
#define CTIO7_FLAGS_EXPLICIT_CONFORM	BIT_5
#define CTIO7_FLAGS_CONFIRM_SATISF	BIT_4
#define CTIO7_FLAGS_DSD_PTR		BIT_2
#define CTIO7_FLAGS_DATA_IN		BIT_1
#define CTIO7_FLAGS_DATA_OUT		BIT_0

#define ELS_PLOGI			0x3
#define ELS_FLOGI			0x4
#define ELS_LOGO			0x5
#define ELS_PRLI			0x20
#define ELS_PRLO			0x21
#define ELS_TPRLO			0x24
#define ELS_PDISC			0x50
#define ELS_ADISC			0x52

/*
 * ISP queue - ABTS received/response entries structure definition for 24xx.
 */
#define ABTS_RECV_24XX		0x54 /* ABTS received (for 24xx) */
#define ABTS_RESP_24XX		0x55 /* ABTS responce (for 24xx) */

/*
 * ISP queue -	ABTS received IOCB entry structure definition for 24xx.
 *		The ABTS BLS received from the wire is sent to the
 *		target driver by the ISP 24xx.
 *		The IOCB is placed on the response queue.
 */
struct abts_recv_from_24xx {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	uint8_t  reserved_1[6];
	uint16_t nport_handle;
	uint8_t  reserved_2[2];
	uint8_t  vp_index;
	uint8_t  reserved_3:4;
	uint8_t  sof_type:4;
	uint32_t exchange_address;
	struct fcp_hdr_le fcp_hdr_le;
	uint8_t  reserved_4[16];
	uint32_t exchange_addr_to_abort;
} __packed;

#define ABTS_PARAM_ABORT_SEQ		BIT_0

struct ba_acc_le {
	uint16_t reserved;
	uint8_t  seq_id_last;
	uint8_t  seq_id_valid;
#define SEQ_ID_VALID	0x80
#define SEQ_ID_INVALID	0x00
	uint16_t rx_id;
	uint16_t ox_id;
	uint16_t high_seq_cnt;
	uint16_t low_seq_cnt;
} __packed;

struct ba_rjt_le {
	uint8_t vendor_uniq;
	uint8_t reason_expl;
	uint8_t reason_code;
#define BA_RJT_REASON_CODE_INVALID_COMMAND	0x1
#define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM	0x9
	uint8_t reserved;
} __packed;

/*
 * ISP queue -	ABTS Response IOCB entry structure definition for 24xx.
 *		The ABTS response to the ABTS received is sent by the
 *		target driver to the ISP 24xx.
 *		The IOCB is placed on the request queue.
 */
struct abts_resp_to_24xx {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	uint32_t handle;
	uint16_t reserved_1;
	uint16_t nport_handle;
	uint16_t control_flags;
#define ABTS_CONTR_FLG_TERM_EXCHG	BIT_0
	uint8_t  vp_index;
	uint8_t  reserved_3:4;
	uint8_t  sof_type:4;
	uint32_t exchange_address;
	struct fcp_hdr_le fcp_hdr_le;
	union {
		struct ba_acc_le ba_acct;
		struct ba_rjt_le ba_rjt;
	} __packed payload;
	uint32_t reserved_4;
	uint32_t exchange_addr_to_abort;
} __packed;

/*
 * ISP queue -	ABTS Response IOCB from ISP24xx Firmware entry structure.
 *		The ABTS response with completion status to the ABTS response
 *		(sent by the target driver to the ISP 24xx) is sent by the
 *		ISP24xx firmware to the target driver.
 *		The IOCB is placed on the response queue.
 */
struct abts_resp_from_24xx_fw {
	uint8_t	 entry_type;		    /* Entry type. */
	uint8_t	 entry_count;		    /* Entry count. */
	uint8_t	 sys_define;		    /* System defined. */
	uint8_t	 entry_status;		    /* Entry Status. */
	uint32_t handle;
	uint16_t compl_status;
#define ABTS_RESP_COMPL_SUCCESS		0
#define ABTS_RESP_COMPL_SUBCODE_ERROR	0x31
	uint16_t nport_handle;
	uint16_t reserved_1;
	uint8_t  reserved_2;
	uint8_t  reserved_3:4;
	uint8_t  sof_type:4;
	uint32_t exchange_address;
	struct fcp_hdr_le fcp_hdr_le;
	uint8_t reserved_4[8];
	uint32_t error_subcode1;
#define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM	0x1E
	uint32_t error_subcode2;
	uint32_t exchange_addr_to_abort;
} __packed;

/********************************************************************\
 * Type Definitions used by initiator & target halves
\********************************************************************/

struct qla_tgt_mgmt_cmd;
struct qla_tgt_sess;

/*
 * This structure provides a template of function calls that the
 * target driver (from within qla_target.c) can issue to the
 * target module (tcm_qla2xxx).
 */
struct qla_tgt_func_tmpl {

	int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
			unsigned char *, uint32_t, int, int, int);
	void (*handle_data)(struct qla_tgt_cmd *);
	int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t,
			uint32_t);
	void (*free_cmd)(struct qla_tgt_cmd *);
	void (*free_mcmd)(struct qla_tgt_mgmt_cmd *);
	void (*free_session)(struct qla_tgt_sess *);

	int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
					void *, uint8_t *, uint16_t);
	void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool);
	struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
						const uint16_t);
	struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
						const uint8_t *);
	void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
	void (*put_sess)(struct qla_tgt_sess *);
	void (*shutdown_sess)(struct qla_tgt_sess *);
};

int qla2x00_wait_for_hba_online(struct scsi_qla_host *);

#include <target/target_core_base.h>

#define QLA_TGT_TIMEOUT			10	/* in seconds */

#define QLA_TGT_MAX_HW_PENDING_TIME	60 /* in seconds */

/* Immediate notify status constants */
#define IMM_NTFY_LIP_RESET          0x000E
#define IMM_NTFY_LIP_LINK_REINIT    0x000F
#define IMM_NTFY_IOCB_OVERFLOW      0x0016
#define IMM_NTFY_ABORT_TASK         0x0020
#define IMM_NTFY_PORT_LOGOUT        0x0029
#define IMM_NTFY_PORT_CONFIG        0x002A
#define IMM_NTFY_GLBL_TPRLO         0x002D
#define IMM_NTFY_GLBL_LOGO          0x002E
#define IMM_NTFY_RESOURCE           0x0034
#define IMM_NTFY_MSG_RX             0x0036
#define IMM_NTFY_SRR                0x0045
#define IMM_NTFY_ELS                0x0046

/* Immediate notify task flags */
#define IMM_NTFY_TASK_MGMT_SHIFT    8

#define QLA_TGT_CLEAR_ACA               0x40
#define QLA_TGT_TARGET_RESET            0x20
#define QLA_TGT_LUN_RESET               0x10
#define QLA_TGT_CLEAR_TS                0x04
#define QLA_TGT_ABORT_TS                0x02
#define QLA_TGT_ABORT_ALL_SESS          0xFFFF
#define QLA_TGT_ABORT_ALL               0xFFFE
#define QLA_TGT_NEXUS_LOSS_SESS         0xFFFD
#define QLA_TGT_NEXUS_LOSS              0xFFFC

/* Notify Acknowledge flags */
#define NOTIFY_ACK_RES_COUNT        BIT_8
#define NOTIFY_ACK_CLEAR_LIP_RESET  BIT_5
#define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4

/* Command's states */
#define QLA_TGT_STATE_NEW		0 /* New command + target processing */
#define QLA_TGT_STATE_NEED_DATA		1 /* target needs data to continue */
#define QLA_TGT_STATE_DATA_IN		2 /* Data arrived + target processing */
#define QLA_TGT_STATE_PROCESSED		3 /* target done processing */
#define QLA_TGT_STATE_ABORTED		4 /* Command aborted */

/* Special handles */
#define QLA_TGT_NULL_HANDLE	0
#define QLA_TGT_SKIP_HANDLE	(0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)

/* ATIO task_codes field */
#define ATIO_SIMPLE_QUEUE           0
#define ATIO_HEAD_OF_QUEUE          1
#define ATIO_ORDERED_QUEUE          2
#define ATIO_ACA_QUEUE              4
#define ATIO_UNTAGGED               5

/* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
#define	FC_TM_SUCCESS               0
#define	FC_TM_BAD_FCP_DATA          1
#define	FC_TM_BAD_CMD               2
#define	FC_TM_FCP_DATA_MISMATCH     3
#define	FC_TM_REJECT                4
#define FC_TM_FAILED                5

/*
 * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was
 * terminated, so no more actions is needed and success should be returned
 * to target.
 */
#define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED	0x1717

#if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
#define pci_dma_lo32(a) (a & 0xffffffff)
#define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
#else
#define pci_dma_lo32(a) (a & 0xffffffff)
#define pci_dma_hi32(a) 0
#endif

#define QLA_TGT_SENSE_VALID(sense)  ((sense != NULL) && \
				(((const uint8_t *)(sense))[0] & 0x70) == 0x70)

struct qla_port_24xx_data {
	uint8_t port_name[WWN_SIZE];
	uint16_t loop_id;
	uint16_t reserved;
};

struct qla_tgt {
	struct scsi_qla_host *vha;
	struct qla_hw_data *ha;

	/*
	 * To sync between IRQ handlers and qlt_target_release(). Needed,
	 * because req_pkt() can drop/reaquire HW lock inside. Protected by
	 * HW lock.
	 */
	int irq_cmd_count;

	int datasegs_per_cmd, datasegs_per_cont, sg_tablesize;

	/* Target's flags, serialized by pha->hardware_lock */
	unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addr enabled */
	unsigned int link_reinit_iocb_pending:1;

	/*
	 * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
	 * OR hardware_lock for reading.
	 */
	int tgt_stop; /* the target mode driver is being stopped */
	int tgt_stopped; /* the target mode driver has been stopped */

	/* Count of sessions refering qla_tgt. Protected by hardware_lock. */
	int sess_count;

	/* Protected by hardware_lock. Addition also protected by tgt_mutex. */
	struct list_head sess_list;

	/* Protected by hardware_lock */
	struct list_head del_sess_list;
	struct delayed_work sess_del_work;

	spinlock_t sess_work_lock;
	struct list_head sess_works_list;
	struct work_struct sess_work;

	struct imm_ntfy_from_isp link_reinit_iocb;
	wait_queue_head_t waitQ;
	int notify_ack_expected;
	int abts_resp_expected;
	int modify_lun_expected;

	int ctio_srr_id;
	int imm_srr_id;
	spinlock_t srr_lock;
	struct list_head srr_ctio_list;
	struct list_head srr_imm_list;
	struct work_struct srr_work;

	atomic_t tgt_global_resets_count;

	struct list_head tgt_list_entry;
};

/*
 * Equivilant to IT Nexus (Initiator-Target)
 */
struct qla_tgt_sess {
	uint16_t loop_id;
	port_id_t s_id;

	unsigned int conf_compl_supported:1;
	unsigned int deleted:1;
	unsigned int local:1;

	struct se_session *se_sess;
	struct scsi_qla_host *vha;
	struct qla_tgt *tgt;

	struct list_head sess_list_entry;
	unsigned long expires;
	struct list_head del_list_entry;

	uint8_t port_name[WWN_SIZE];
	struct work_struct free_work;
};

struct qla_tgt_cmd {
	struct qla_tgt_sess *sess;
	int state;
	struct se_cmd se_cmd;
	struct work_struct free_work;
	struct work_struct work;
	/* Sense buffer that will be mapped into outgoing status */
	unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];

	/* to save extra sess dereferences */
	unsigned int conf_compl_supported:1;
	unsigned int sg_mapped:1;
	unsigned int free_sg:1;
	unsigned int aborted:1; /* Needed in case of SRR */
	unsigned int write_data_transferred:1;

	struct scatterlist *sg;	/* cmd data buffer SG vector */
	int sg_cnt;		/* SG segments count */
	int bufflen;		/* cmd buffer length */
	int offset;
	uint32_t tag;
	uint32_t unpacked_lun;
	enum dma_data_direction dma_data_direction;

	uint16_t loop_id;	/* to save extra sess dereferences */
	struct qla_tgt *tgt;	/* to save extra sess dereferences */
	struct scsi_qla_host *vha;
	struct list_head cmd_list;

	struct atio_from_isp atio;
};

struct qla_tgt_sess_work_param {
	struct list_head sess_works_list_entry;

#define QLA_TGT_SESS_WORK_ABORT	1
#define QLA_TGT_SESS_WORK_TM	2
	int type;

	union {
		struct abts_recv_from_24xx abts;
		struct imm_ntfy_from_isp tm_iocb;
		struct atio_from_isp tm_iocb2;
	};
};

struct qla_tgt_mgmt_cmd {
	uint8_t tmr_func;
	uint8_t fc_tm_rsp;
	struct qla_tgt_sess *sess;
	struct se_cmd se_cmd;
	struct work_struct free_work;
	unsigned int flags;
#define QLA24XX_MGMT_SEND_NACK	1
	union {
		struct atio_from_isp atio;
		struct imm_ntfy_from_isp imm_ntfy;
		struct abts_recv_from_24xx abts;
	} __packed orig_iocb;
};

struct qla_tgt_prm {
	struct qla_tgt_cmd *cmd;
	struct qla_tgt *tgt;
	void *pkt;
	struct scatterlist *sg;	/* cmd data buffer SG vector */
	int seg_cnt;
	int req_cnt;
	uint16_t rq_result;
	uint16_t scsi_status;
	unsigned char *sense_buffer;
	int sense_buffer_len;
	int residual;
	int add_status_pkt;
};

struct qla_tgt_srr_imm {
	struct list_head srr_list_entry;
	int srr_id;
	struct imm_ntfy_from_isp imm_ntfy;
};

struct qla_tgt_srr_ctio {
	struct list_head srr_list_entry;
	int srr_id;
	struct qla_tgt_cmd *cmd;
};

#define QLA_TGT_XMIT_DATA		1
#define QLA_TGT_XMIT_STATUS		2
#define QLA_TGT_XMIT_ALL		(QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)


extern struct qla_tgt_data qla_target;
/*
 * Internal function prototypes
 */
void qlt_disable_vha(struct scsi_qla_host *);

/*
 * Function prototypes for qla_target.c logic used by qla2xxx LLD code.
 */
extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64,
			int (*callback)(struct scsi_qla_host *), void *);
extern void qlt_lport_deregister(struct scsi_qla_host *);
extern void qlt_unreg_sess(struct qla_tgt_sess *);
extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
extern void qlt_set_mode(struct scsi_qla_host *ha);
extern void qlt_clear_mode(struct scsi_qla_host *ha);
extern int __init qlt_init(void);
extern void qlt_exit(void);
extern void qlt_update_vp_map(struct scsi_qla_host *, int);

/*
 * This macro is used during early initializations when host->active_mode
 * is not set. Right now, ha value is ignored.
 */
#define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
extern int ql2x_ini_mode;

static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
{
	return ha->host->active_mode & MODE_TARGET;
}

static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
{
	return ha->host->active_mode & MODE_INITIATOR;
}

static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
{
	if (ha->host->active_mode & MODE_INITIATOR)
		ha->host->active_mode &= ~MODE_INITIATOR;
	else
		ha->host->active_mode |= MODE_INITIATOR;
}

/*
 * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
 */
extern void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *,
	struct atio_from_isp *);
extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
extern void qlt_ctio_completion(struct scsi_qla_host *, uint32_t);
extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
extern void qlt_enable_vha(struct scsi_qla_host *);
extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
extern void qlt_init_atio_q_entries(struct scsi_qla_host *);
extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *);
extern void qlt_24xx_config_rings(struct scsi_qla_host *);
extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *,
	struct nvram_24xx *);
extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *,
	struct init_cb_24xx *);
extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *,
	struct init_cb_81xx *);
extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *,
	struct nvram_81xx *);
extern int qlt_24xx_process_response_error(struct scsi_qla_host *,
	struct sts_entry_24xx *);
extern void qlt_modify_vp_config(struct scsi_qla_host *,
	struct vp_config_entry_24xx *);
extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
extern int qlt_mem_alloc(struct qla_hw_data *);
extern void qlt_mem_free(struct qla_hw_data *);
extern void qlt_stop_phase1(struct qla_tgt *);
extern void qlt_stop_phase2(struct qla_tgt *);
extern irqreturn_t qla83xx_msix_atio_q(int, void *);
extern void qlt_83xx_iospace_config(struct qla_hw_data *);

#endif /* __QLA_TARGET_H */