summaryrefslogtreecommitdiff
path: root/drivers/scsi/smartpqi/smartpqi.h
blob: dc3a0542a2e83b161bd3ea44b41f450d9e48c7a9 (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
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
/*
 *    driver for Microsemi PQI-based storage controllers
 *    Copyright (c) 2016-2017 Microsemi Corporation
 *    Copyright (c) 2016 PMC-Sierra, Inc.
 *
 *    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; version 2 of the License.
 *
 *    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, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
 *    Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
 *
 */

#include <linux/io-64-nonatomic-lo-hi.h>

#if !defined(_SMARTPQI_H)
#define _SMARTPQI_H

#pragma pack(1)

#define PQI_DEVICE_SIGNATURE	"PQI DREG"

/* This structure is defined by the PQI specification. */
struct pqi_device_registers {
	__le64	signature;
	u8	function_and_status_code;
	u8	reserved[7];
	u8	max_admin_iq_elements;
	u8	max_admin_oq_elements;
	u8	admin_iq_element_length;	/* in 16-byte units */
	u8	admin_oq_element_length;	/* in 16-byte units */
	__le16	max_reset_timeout;		/* in 100-millisecond units */
	u8	reserved1[2];
	__le32	legacy_intx_status;
	__le32	legacy_intx_mask_set;
	__le32	legacy_intx_mask_clear;
	u8	reserved2[28];
	__le32	device_status;
	u8	reserved3[4];
	__le64	admin_iq_pi_offset;
	__le64	admin_oq_ci_offset;
	__le64	admin_iq_element_array_addr;
	__le64	admin_oq_element_array_addr;
	__le64	admin_iq_ci_addr;
	__le64	admin_oq_pi_addr;
	u8	admin_iq_num_elements;
	u8	admin_oq_num_elements;
	__le16	admin_queue_int_msg_num;
	u8	reserved4[4];
	__le32	device_error;
	u8	reserved5[4];
	__le64	error_details;
	__le32	device_reset;
	__le32	power_action;
	u8	reserved6[104];
};

/*
 * controller registers
 *
 * These are defined by the Microsemi implementation.
 *
 * Some registers (those named sis_*) are only used when in
 * legacy SIS mode before we transition the controller into
 * PQI mode.  There are a number of other SIS mode registers,
 * but we don't use them, so only the SIS registers that we
 * care about are defined here.  The offsets mentioned in the
 * comments are the offsets from the PCIe BAR 0.
 */
struct pqi_ctrl_registers {
	u8	reserved[0x20];
	__le32	sis_host_to_ctrl_doorbell;		/* 20h */
	u8	reserved1[0x34 - (0x20 + sizeof(__le32))];
	__le32	sis_interrupt_mask;			/* 34h */
	u8	reserved2[0x9c - (0x34 + sizeof(__le32))];
	__le32	sis_ctrl_to_host_doorbell;		/* 9Ch */
	u8	reserved3[0xa0 - (0x9c + sizeof(__le32))];
	__le32	sis_ctrl_to_host_doorbell_clear;	/* A0h */
	u8	reserved4[0xb0 - (0xa0 + sizeof(__le32))];
	__le32	sis_driver_scratch;			/* B0h */
	u8	reserved5[0xbc - (0xb0 + sizeof(__le32))];
	__le32	sis_firmware_status;			/* BCh */
	u8	reserved6[0x1000 - (0xbc + sizeof(__le32))];
	__le32	sis_mailbox[8];				/* 1000h */
	u8	reserved7[0x4000 - (0x1000 + (sizeof(__le32) * 8))];
	/*
	 * The PQI spec states that the PQI registers should be at
	 * offset 0 from the PCIe BAR 0.  However, we can't map
	 * them at offset 0 because that would break compatibility
	 * with the SIS registers.  So we map them at offset 4000h.
	 */
	struct pqi_device_registers pqi_registers;	/* 4000h */
};

#define PQI_DEVICE_REGISTERS_OFFSET	0x4000

enum pqi_io_path {
	RAID_PATH = 0,
	AIO_PATH = 1
};

enum pqi_irq_mode {
	IRQ_MODE_NONE,
	IRQ_MODE_INTX,
	IRQ_MODE_MSIX
};

struct pqi_sg_descriptor {
	__le64	address;
	__le32	length;
	__le32	flags;
};

/* manifest constants for the flags field of pqi_sg_descriptor */
#define CISS_SG_LAST	0x40000000
#define CISS_SG_CHAIN	0x80000000

struct pqi_iu_header {
	u8	iu_type;
	u8	reserved;
	__le16	iu_length;	/* in bytes - does not include the length */
				/* of this header */
	__le16	response_queue_id;	/* specifies the OQ where the */
					/*   response IU is to be delivered */
	u8	work_area[2];	/* reserved for driver use */
};

/*
 * According to the PQI spec, the IU header is only the first 4 bytes of our
 * pqi_iu_header structure.
 */
#define PQI_REQUEST_HEADER_LENGTH	4

struct pqi_general_admin_request {
	struct pqi_iu_header header;
	__le16	request_id;
	u8	function_code;
	union {
		struct {
			u8	reserved[33];
			__le32	buffer_length;
			struct pqi_sg_descriptor sg_descriptor;
		} report_device_capability;

		struct {
			u8	reserved;
			__le16	queue_id;
			u8	reserved1[2];
			__le64	element_array_addr;
			__le64	ci_addr;
			__le16	num_elements;
			__le16	element_length;
			u8	queue_protocol;
			u8	reserved2[23];
			__le32	vendor_specific;
		} create_operational_iq;

		struct {
			u8	reserved;
			__le16	queue_id;
			u8	reserved1[2];
			__le64	element_array_addr;
			__le64	pi_addr;
			__le16	num_elements;
			__le16	element_length;
			u8	queue_protocol;
			u8	reserved2[3];
			__le16	int_msg_num;
			__le16	coalescing_count;
			__le32	min_coalescing_time;
			__le32	max_coalescing_time;
			u8	reserved3[8];
			__le32	vendor_specific;
		} create_operational_oq;

		struct {
			u8	reserved;
			__le16	queue_id;
			u8	reserved1[50];
		} delete_operational_queue;

		struct {
			u8	reserved;
			__le16	queue_id;
			u8	reserved1[46];
			__le32	vendor_specific;
		} change_operational_iq_properties;

	} data;
};

struct pqi_general_admin_response {
	struct pqi_iu_header header;
	__le16	request_id;
	u8	function_code;
	u8	status;
	union {
		struct {
			u8	status_descriptor[4];
			__le64	iq_pi_offset;
			u8	reserved[40];
		} create_operational_iq;

		struct {
			u8	status_descriptor[4];
			__le64	oq_ci_offset;
			u8	reserved[40];
		} create_operational_oq;
	} data;
};

struct pqi_iu_layer_descriptor {
	u8	inbound_spanning_supported : 1;
	u8	reserved : 7;
	u8	reserved1[5];
	__le16	max_inbound_iu_length;
	u8	outbound_spanning_supported : 1;
	u8	reserved2 : 7;
	u8	reserved3[5];
	__le16	max_outbound_iu_length;
};

struct pqi_device_capability {
	__le16	data_length;
	u8	reserved[6];
	u8	iq_arbitration_priority_support_bitmask;
	u8	maximum_aw_a;
	u8	maximum_aw_b;
	u8	maximum_aw_c;
	u8	max_arbitration_burst : 3;
	u8	reserved1 : 4;
	u8	iqa : 1;
	u8	reserved2[2];
	u8	iq_freeze : 1;
	u8	reserved3 : 7;
	__le16	max_inbound_queues;
	__le16	max_elements_per_iq;
	u8	reserved4[4];
	__le16	max_iq_element_length;
	__le16	min_iq_element_length;
	u8	reserved5[2];
	__le16	max_outbound_queues;
	__le16	max_elements_per_oq;
	__le16	intr_coalescing_time_granularity;
	__le16	max_oq_element_length;
	__le16	min_oq_element_length;
	u8	reserved6[24];
	struct pqi_iu_layer_descriptor iu_layer_descriptors[32];
};

#define PQI_MAX_EMBEDDED_SG_DESCRIPTORS		4

struct pqi_raid_path_request {
	struct pqi_iu_header header;
	__le16	request_id;
	__le16	nexus_id;
	__le32	buffer_length;
	u8	lun_number[8];
	__le16	protocol_specific;
	u8	data_direction : 2;
	u8	partial : 1;
	u8	reserved1 : 4;
	u8	fence : 1;
	__le16	error_index;
	u8	reserved2;
	u8	task_attribute : 3;
	u8	command_priority : 4;
	u8	reserved3 : 1;
	u8	reserved4 : 2;
	u8	additional_cdb_bytes_usage : 3;
	u8	reserved5 : 3;
	u8	cdb[32];
	struct pqi_sg_descriptor
		sg_descriptors[PQI_MAX_EMBEDDED_SG_DESCRIPTORS];
};

struct pqi_aio_path_request {
	struct pqi_iu_header header;
	__le16	request_id;
	u8	reserved1[2];
	__le32	nexus_id;
	__le32	buffer_length;
	u8	data_direction : 2;
	u8	partial : 1;
	u8	memory_type : 1;
	u8	fence : 1;
	u8	encryption_enable : 1;
	u8	reserved2 : 2;
	u8	task_attribute : 3;
	u8	command_priority : 4;
	u8	reserved3 : 1;
	__le16	data_encryption_key_index;
	__le32	encrypt_tweak_lower;
	__le32	encrypt_tweak_upper;
	u8	cdb[16];
	__le16	error_index;
	u8	num_sg_descriptors;
	u8	cdb_length;
	u8	lun_number[8];
	u8	reserved4[4];
	struct pqi_sg_descriptor
		sg_descriptors[PQI_MAX_EMBEDDED_SG_DESCRIPTORS];
};

struct pqi_io_response {
	struct pqi_iu_header header;
	__le16	request_id;
	__le16	error_index;
	u8	reserved2[4];
};

struct pqi_general_management_request {
	struct pqi_iu_header header;
	__le16	request_id;
	union {
		struct {
			u8	reserved[2];
			__le32	buffer_length;
			struct pqi_sg_descriptor sg_descriptors[3];
		} report_event_configuration;

		struct {
			__le16	global_event_oq_id;
			__le32	buffer_length;
			struct pqi_sg_descriptor sg_descriptors[3];
		} set_event_configuration;
	} data;
};

struct pqi_event_descriptor {
	u8	event_type;
	u8	reserved;
	__le16	oq_id;
};

struct pqi_event_config {
	u8	reserved[2];
	u8	num_event_descriptors;
	u8	reserved1;
	struct pqi_event_descriptor descriptors[1];
};

#define PQI_MAX_EVENT_DESCRIPTORS	255

struct pqi_event_response {
	struct pqi_iu_header header;
	u8	event_type;
	u8	reserved2 : 7;
	u8	request_acknowlege : 1;
	__le16	event_id;
	__le32	additional_event_id;
	u8	data[16];
};

struct pqi_event_acknowledge_request {
	struct pqi_iu_header header;
	u8	event_type;
	u8	reserved2;
	__le16	event_id;
	__le32	additional_event_id;
};

struct pqi_task_management_request {
	struct pqi_iu_header header;
	__le16	request_id;
	__le16	nexus_id;
	u8	reserved[4];
	u8	lun_number[8];
	__le16	protocol_specific;
	__le16	outbound_queue_id_to_manage;
	__le16	request_id_to_manage;
	u8	task_management_function;
	u8	reserved2 : 7;
	u8	fence : 1;
};

#define SOP_TASK_MANAGEMENT_LUN_RESET	0x8

struct pqi_task_management_response {
	struct pqi_iu_header header;
	__le16	request_id;
	__le16	nexus_id;
	u8	additional_response_info[3];
	u8	response_code;
};

struct pqi_aio_error_info {
	u8	status;
	u8	service_response;
	u8	data_present;
	u8	reserved;
	__le32	residual_count;
	__le16	data_length;
	__le16	reserved1;
	u8	data[256];
};

struct pqi_raid_error_info {
	u8	data_in_result;
	u8	data_out_result;
	u8	reserved[3];
	u8	status;
	__le16	status_qualifier;
	__le16	sense_data_length;
	__le16	response_data_length;
	__le32	data_in_transferred;
	__le32	data_out_transferred;
	u8	data[256];
};

#define PQI_REQUEST_IU_TASK_MANAGEMENT			0x13
#define PQI_REQUEST_IU_RAID_PATH_IO			0x14
#define PQI_REQUEST_IU_AIO_PATH_IO			0x15
#define PQI_REQUEST_IU_GENERAL_ADMIN			0x60
#define PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG	0x72
#define PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG		0x73
#define PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT		0xf6

#define PQI_RESPONSE_IU_GENERAL_MANAGEMENT		0x81
#define PQI_RESPONSE_IU_TASK_MANAGEMENT			0x93
#define PQI_RESPONSE_IU_GENERAL_ADMIN			0xe0
#define PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS		0xf0
#define PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS		0xf1
#define PQI_RESPONSE_IU_RAID_PATH_IO_ERROR		0xf2
#define PQI_RESPONSE_IU_AIO_PATH_IO_ERROR		0xf3
#define PQI_RESPONSE_IU_AIO_PATH_DISABLED		0xf4
#define PQI_RESPONSE_IU_VENDOR_EVENT			0xf5

#define PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY	0x0
#define PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ			0x10
#define PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ			0x11
#define PQI_GENERAL_ADMIN_FUNCTION_DELETE_IQ			0x12
#define PQI_GENERAL_ADMIN_FUNCTION_DELETE_OQ			0x13
#define PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY		0x14

#define PQI_GENERAL_ADMIN_STATUS_SUCCESS	0x0

#define PQI_IQ_PROPERTY_IS_AIO_QUEUE	0x1

#define PQI_GENERAL_ADMIN_IU_LENGTH		0x3c
#define PQI_PROTOCOL_SOP			0x0

#define PQI_DATA_IN_OUT_GOOD					0x0
#define PQI_DATA_IN_OUT_UNDERFLOW				0x1
#define PQI_DATA_IN_OUT_BUFFER_ERROR				0x40
#define PQI_DATA_IN_OUT_BUFFER_OVERFLOW				0x41
#define PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA		0x42
#define PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE			0x43
#define PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR			0x60
#define PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT			0x61
#define PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED		0x62
#define PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED	0x63
#define PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED			0x64
#define PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST		0x65
#define PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION			0x66
#define PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED			0x67
#define PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ		0x6F
#define PQI_DATA_IN_OUT_ERROR					0xf0
#define PQI_DATA_IN_OUT_PROTOCOL_ERROR				0xf1
#define PQI_DATA_IN_OUT_HARDWARE_ERROR				0xf2
#define PQI_DATA_IN_OUT_UNSOLICITED_ABORT			0xf3
#define PQI_DATA_IN_OUT_ABORTED					0xf4
#define PQI_DATA_IN_OUT_TIMEOUT					0xf5

#define CISS_CMD_STATUS_SUCCESS			0x0
#define CISS_CMD_STATUS_TARGET_STATUS		0x1
#define CISS_CMD_STATUS_DATA_UNDERRUN		0x2
#define CISS_CMD_STATUS_DATA_OVERRUN		0x3
#define CISS_CMD_STATUS_INVALID			0x4
#define CISS_CMD_STATUS_PROTOCOL_ERROR		0x5
#define CISS_CMD_STATUS_HARDWARE_ERROR		0x6
#define CISS_CMD_STATUS_CONNECTION_LOST		0x7
#define CISS_CMD_STATUS_ABORTED			0x8
#define CISS_CMD_STATUS_ABORT_FAILED		0x9
#define CISS_CMD_STATUS_UNSOLICITED_ABORT	0xa
#define CISS_CMD_STATUS_TIMEOUT			0xb
#define CISS_CMD_STATUS_UNABORTABLE		0xc
#define CISS_CMD_STATUS_TMF			0xd
#define CISS_CMD_STATUS_AIO_DISABLED		0xe

#define PQI_NUM_EVENT_QUEUE_ELEMENTS	32
#define PQI_EVENT_OQ_ELEMENT_LENGTH	sizeof(struct pqi_event_response)

#define PQI_EVENT_TYPE_HOTPLUG			0x1
#define PQI_EVENT_TYPE_HARDWARE			0x2
#define PQI_EVENT_TYPE_PHYSICAL_DEVICE		0x4
#define PQI_EVENT_TYPE_LOGICAL_DEVICE		0x5
#define PQI_EVENT_TYPE_AIO_STATE_CHANGE		0xfd
#define PQI_EVENT_TYPE_AIO_CONFIG_CHANGE	0xfe

#pragma pack()

#define PQI_ERROR_BUFFER_ELEMENT_LENGTH		\
	sizeof(struct pqi_raid_error_info)

/* these values are based on our implementation */
#define PQI_ADMIN_IQ_NUM_ELEMENTS		8
#define PQI_ADMIN_OQ_NUM_ELEMENTS		20
#define PQI_ADMIN_IQ_ELEMENT_LENGTH		64
#define PQI_ADMIN_OQ_ELEMENT_LENGTH		64

#define PQI_OPERATIONAL_IQ_ELEMENT_LENGTH	128
#define PQI_OPERATIONAL_OQ_ELEMENT_LENGTH	16

#define PQI_MIN_MSIX_VECTORS		1
#define PQI_MAX_MSIX_VECTORS		64

/* these values are defined by the PQI spec */
#define PQI_MAX_NUM_ELEMENTS_ADMIN_QUEUE	255
#define PQI_MAX_NUM_ELEMENTS_OPERATIONAL_QUEUE	65535
#define PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT	64
#define PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT	16
#define PQI_ADMIN_INDEX_ALIGNMENT		64
#define PQI_OPERATIONAL_INDEX_ALIGNMENT		4

#define PQI_MIN_OPERATIONAL_QUEUE_ID		1
#define PQI_MAX_OPERATIONAL_QUEUE_ID		65535

#define PQI_AIO_SERV_RESPONSE_COMPLETE		0
#define PQI_AIO_SERV_RESPONSE_FAILURE		1
#define PQI_AIO_SERV_RESPONSE_TMF_COMPLETE	2
#define PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED	3
#define PQI_AIO_SERV_RESPONSE_TMF_REJECTED	4
#define PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN	5

#define PQI_AIO_STATUS_IO_ERROR			0x1
#define PQI_AIO_STATUS_IO_ABORTED		0x2
#define PQI_AIO_STATUS_NO_PATH_TO_DEVICE	0x3
#define PQI_AIO_STATUS_INVALID_DEVICE		0x4
#define PQI_AIO_STATUS_AIO_PATH_DISABLED	0xe
#define PQI_AIO_STATUS_UNDERRUN			0x51
#define PQI_AIO_STATUS_OVERRUN			0x75

typedef u32 pqi_index_t;

/* SOP data direction flags */
#define SOP_NO_DIRECTION_FLAG	0
#define SOP_WRITE_FLAG		1	/* host writes data to Data-Out */
					/* buffer */
#define SOP_READ_FLAG		2	/* host receives data from Data-In */
					/* buffer */
#define SOP_BIDIRECTIONAL	3	/* data is transferred from the */
					/* Data-Out buffer and data is */
					/* transferred to the Data-In buffer */

#define SOP_TASK_ATTRIBUTE_SIMPLE		0
#define SOP_TASK_ATTRIBUTE_HEAD_OF_QUEUE	1
#define SOP_TASK_ATTRIBUTE_ORDERED		2
#define SOP_TASK_ATTRIBUTE_ACA			4

#define SOP_TMF_COMPLETE		0x0
#define SOP_TMF_FUNCTION_SUCCEEDED	0x8

/* additional CDB bytes usage field codes */
#define SOP_ADDITIONAL_CDB_BYTES_0	0	/* 16-byte CDB */
#define SOP_ADDITIONAL_CDB_BYTES_4	1	/* 20-byte CDB */
#define SOP_ADDITIONAL_CDB_BYTES_8	2	/* 24-byte CDB */
#define SOP_ADDITIONAL_CDB_BYTES_12	3	/* 28-byte CDB */
#define SOP_ADDITIONAL_CDB_BYTES_16	4	/* 32-byte CDB */

/*
 * The purpose of this structure is to obtain proper alignment of objects in
 * an admin queue pair.
 */
struct pqi_admin_queues_aligned {
	__aligned(PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT)
		u8	iq_element_array[PQI_ADMIN_IQ_ELEMENT_LENGTH]
					[PQI_ADMIN_IQ_NUM_ELEMENTS];
	__aligned(PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT)
		u8	oq_element_array[PQI_ADMIN_OQ_ELEMENT_LENGTH]
					[PQI_ADMIN_OQ_NUM_ELEMENTS];
	__aligned(PQI_ADMIN_INDEX_ALIGNMENT) pqi_index_t iq_ci;
	__aligned(PQI_ADMIN_INDEX_ALIGNMENT) pqi_index_t oq_pi;
};

struct pqi_admin_queues {
	void		*iq_element_array;
	void		*oq_element_array;
	volatile pqi_index_t *iq_ci;
	volatile pqi_index_t *oq_pi;
	dma_addr_t	iq_element_array_bus_addr;
	dma_addr_t	oq_element_array_bus_addr;
	dma_addr_t	iq_ci_bus_addr;
	dma_addr_t	oq_pi_bus_addr;
	__le32 __iomem	*iq_pi;
	pqi_index_t	iq_pi_copy;
	__le32 __iomem	*oq_ci;
	pqi_index_t	oq_ci_copy;
	struct task_struct *task;
	u16		int_msg_num;
};

struct pqi_queue_group {
	struct pqi_ctrl_info *ctrl_info;	/* backpointer */
	u16		iq_id[2];
	u16		oq_id;
	u16		int_msg_num;
	void		*iq_element_array[2];
	void		*oq_element_array;
	dma_addr_t	iq_element_array_bus_addr[2];
	dma_addr_t	oq_element_array_bus_addr;
	__le32 __iomem	*iq_pi[2];
	pqi_index_t	iq_pi_copy[2];
	volatile pqi_index_t *iq_ci[2];
	volatile pqi_index_t *oq_pi;
	dma_addr_t	iq_ci_bus_addr[2];
	dma_addr_t	oq_pi_bus_addr;
	__le32 __iomem	*oq_ci;
	pqi_index_t	oq_ci_copy;
	spinlock_t	submit_lock[2];	/* protect submission queue */
	struct list_head request_list[2];
};

struct pqi_event_queue {
	u16		oq_id;
	u16		int_msg_num;
	void		*oq_element_array;
	volatile pqi_index_t *oq_pi;
	dma_addr_t	oq_element_array_bus_addr;
	dma_addr_t	oq_pi_bus_addr;
	__le32 __iomem	*oq_ci;
	pqi_index_t	oq_ci_copy;
};

#define PQI_DEFAULT_QUEUE_GROUP		0
#define PQI_MAX_QUEUE_GROUPS		PQI_MAX_MSIX_VECTORS

struct pqi_encryption_info {
	u16	data_encryption_key_index;
	u32	encrypt_tweak_lower;
	u32	encrypt_tweak_upper;
};

#pragma pack(1)

#define PQI_CONFIG_TABLE_SIGNATURE	"CFGTABLE"
#define PQI_CONFIG_TABLE_MAX_LENGTH	((u16)~0)

/* configuration table section IDs */
#define PQI_CONFIG_TABLE_SECTION_GENERAL_INFO		0
#define PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES	1
#define PQI_CONFIG_TABLE_SECTION_FIRMWARE_ERRATA	2
#define PQI_CONFIG_TABLE_SECTION_DEBUG			3
#define PQI_CONFIG_TABLE_SECTION_HEARTBEAT		4

struct pqi_config_table {
	u8	signature[8];		/* "CFGTABLE" */
	__le32	first_section_offset;	/* offset in bytes from the base */
					/* address of this table to the */
					/* first section */
};

struct pqi_config_table_section_header {
	__le16	section_id;		/* as defined by the */
					/* PQI_CONFIG_TABLE_SECTION_* */
					/* manifest constants above */
	__le16	next_section_offset;	/* offset in bytes from base */
					/* address of the table of the */
					/* next section or 0 if last entry */
};

struct pqi_config_table_general_info {
	struct pqi_config_table_section_header header;
	__le32	section_length;		/* size of this section in bytes */
					/* including the section header */
	__le32	max_outstanding_requests;	/* max. outstanding */
						/* commands supported by */
						/* the controller */
	__le32	max_sg_size;		/* max. transfer size of a single */
					/* command */
	__le32	max_sg_per_request;	/* max. number of scatter-gather */
					/* entries supported in a single */
					/* command */
};

struct pqi_config_table_debug {
	struct pqi_config_table_section_header header;
	__le32	scratchpad;
};

struct pqi_config_table_heartbeat {
	struct pqi_config_table_section_header header;
	__le32	heartbeat_counter;
};

union pqi_reset_register {
	struct {
		u32	reset_type : 3;
		u32	reserved : 2;
		u32	reset_action : 3;
		u32	hold_in_pd1 : 1;
		u32	reserved2 : 23;
	} bits;
	u32	all_bits;
};

#define PQI_RESET_ACTION_RESET		0x1

#define PQI_RESET_TYPE_NO_RESET		0x0
#define PQI_RESET_TYPE_SOFT_RESET	0x1
#define PQI_RESET_TYPE_FIRM_RESET	0x2
#define PQI_RESET_TYPE_HARD_RESET	0x3

#define PQI_RESET_ACTION_COMPLETED	0x2

#define PQI_RESET_POLL_INTERVAL_MSECS	100

#define PQI_MAX_OUTSTANDING_REQUESTS		((u32)~0)
#define PQI_MAX_OUTSTANDING_REQUESTS_KDUMP	32
#define PQI_MAX_TRANSFER_SIZE			(1024U * 1024U)
#define PQI_MAX_TRANSFER_SIZE_KDUMP		(512 * 1024U)

#define RAID_MAP_MAX_ENTRIES		1024

#define PQI_PHYSICAL_DEVICE_BUS		0
#define PQI_RAID_VOLUME_BUS		1
#define PQI_HBA_BUS			2
#define PQI_EXTERNAL_RAID_VOLUME_BUS	3
#define PQI_MAX_BUS			PQI_EXTERNAL_RAID_VOLUME_BUS

struct report_lun_header {
	__be32	list_length;
	u8	extended_response;
	u8	reserved[3];
};

struct report_log_lun_extended_entry {
	u8	lunid[8];
	u8	volume_id[16];
};

struct report_log_lun_extended {
	struct report_lun_header header;
	struct report_log_lun_extended_entry lun_entries[1];
};

struct report_phys_lun_extended_entry {
	u8	lunid[8];
	__be64	wwid;
	u8	device_type;
	u8	device_flags;
	u8	lun_count;	/* number of LUNs in a multi-LUN device */
	u8	redundant_paths;
	u32	aio_handle;
};

/* for device_flags field of struct report_phys_lun_extended_entry */
#define REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED	0x8

struct report_phys_lun_extended {
	struct report_lun_header header;
	struct report_phys_lun_extended_entry lun_entries[1];
};

struct raid_map_disk_data {
	u32	aio_handle;
	u8	xor_mult[2];
	u8	reserved[2];
};

/* constants for flags field of RAID map */
#define RAID_MAP_ENCRYPTION_ENABLED	0x1

struct raid_map {
	__le32	structure_size;		/* size of entire structure in bytes */
	__le32	volume_blk_size;	/* bytes / block in the volume */
	__le64	volume_blk_cnt;		/* logical blocks on the volume */
	u8	phys_blk_shift;		/* shift factor to convert between */
					/* units of logical blocks and */
					/* physical disk blocks */
	u8	parity_rotation_shift;	/* shift factor to convert between */
					/* units of logical stripes and */
					/* physical stripes */
	__le16	strip_size;		/* blocks used on each disk / stripe */
	__le64	disk_starting_blk;	/* first disk block used in volume */
	__le64	disk_blk_cnt;		/* disk blocks used by volume / disk */
	__le16	data_disks_per_row;	/* data disk entries / row in the map */
	__le16	metadata_disks_per_row;	/* mirror/parity disk entries / row */
					/* in the map */
	__le16	row_cnt;		/* rows in each layout map */
	__le16	layout_map_count;	/* layout maps (1 map per */
					/* mirror parity group) */
	__le16	flags;
	__le16	data_encryption_key_index;
	u8	reserved[16];
	struct raid_map_disk_data disk_data[RAID_MAP_MAX_ENTRIES];
};

#pragma pack()

#define RAID_CTLR_LUNID		"\0\0\0\0\0\0\0\0"

struct pqi_scsi_dev {
	int	devtype;		/* as reported by INQUIRY commmand */
	u8	device_type;		/* as reported by */
					/* BMIC_IDENTIFY_PHYSICAL_DEVICE */
					/* only valid for devtype = TYPE_DISK */
	int	bus;
	int	target;
	int	lun;
	u8	scsi3addr[8];
	__be64	wwid;
	u8	volume_id[16];
	u8	is_physical_device : 1;
	u8	is_external_raid_device : 1;
	u8	target_lun_valid : 1;
	u8	device_gone : 1;
	u8	new_device : 1;
	u8	keep_device : 1;
	u8	volume_offline : 1;
	bool	aio_enabled;		/* only valid for physical disks */
	bool	in_reset;
	bool	device_offline;
	u8	vendor[8];		/* bytes 8-15 of inquiry data */
	u8	model[16];		/* bytes 16-31 of inquiry data */
	u64	sas_address;
	u8	raid_level;
	u16	queue_depth;		/* max. queue_depth for this device */
	u16	advertised_queue_depth;
	u32	aio_handle;
	u8	volume_status;
	u8	active_path_index;
	u8	path_map;
	u8	bay;
	u8	box[8];
	u16	phys_connector[8];
	bool	raid_bypass_configured;	/* RAID bypass configured */
	bool	raid_bypass_enabled;	/* RAID bypass enabled */
	int	offload_to_mirror;	/* Send next RAID bypass request */
					/* to mirror drive. */
	struct raid_map *raid_map;	/* RAID bypass map */

	struct pqi_sas_port *sas_port;
	struct scsi_device *sdev;

	struct list_head scsi_device_list_entry;
	struct list_head new_device_list_entry;
	struct list_head add_list_entry;
	struct list_head delete_list_entry;

	atomic_t scsi_cmds_outstanding;
};

/* VPD inquiry pages */
#define SCSI_VPD_SUPPORTED_PAGES	0x0	/* standard page */
#define SCSI_VPD_DEVICE_ID		0x83	/* standard page */
#define CISS_VPD_LV_DEVICE_GEOMETRY	0xc1	/* vendor-specific page */
#define CISS_VPD_LV_BYPASS_STATUS	0xc2	/* vendor-specific page */
#define CISS_VPD_LV_STATUS		0xc3	/* vendor-specific page */

#define VPD_PAGE	(1 << 8)

#pragma pack(1)

/* structure for CISS_VPD_LV_STATUS */
struct ciss_vpd_logical_volume_status {
	u8	peripheral_info;
	u8	page_code;
	u8	reserved;
	u8	page_length;
	u8	volume_status;
	u8	reserved2[3];
	__be32	flags;
};

#pragma pack()

/* constants for volume_status field of ciss_vpd_logical_volume_status */
#define CISS_LV_OK					0
#define CISS_LV_FAILED					1
#define CISS_LV_NOT_CONFIGURED				2
#define CISS_LV_DEGRADED				3
#define CISS_LV_READY_FOR_RECOVERY			4
#define CISS_LV_UNDERGOING_RECOVERY			5
#define CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED		6
#define CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM	7
#define CISS_LV_HARDWARE_OVERHEATING			8
#define CISS_LV_HARDWARE_HAS_OVERHEATED			9
#define CISS_LV_UNDERGOING_EXPANSION			10
#define CISS_LV_NOT_AVAILABLE				11
#define CISS_LV_QUEUED_FOR_EXPANSION			12
#define CISS_LV_DISABLED_SCSI_ID_CONFLICT		13
#define CISS_LV_EJECTED					14
#define CISS_LV_UNDERGOING_ERASE			15
/* state 16 not used */
#define CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD	17
#define CISS_LV_UNDERGOING_RPI				18
#define CISS_LV_PENDING_RPI				19
#define CISS_LV_ENCRYPTED_NO_KEY			20
/* state 21 not used */
#define CISS_LV_UNDERGOING_ENCRYPTION			22
#define CISS_LV_UNDERGOING_ENCRYPTION_REKEYING		23
#define CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER	24
#define CISS_LV_PENDING_ENCRYPTION			25
#define CISS_LV_PENDING_ENCRYPTION_REKEYING		26
#define CISS_LV_NOT_SUPPORTED				27
#define CISS_LV_STATUS_UNAVAILABLE			255

/* constants for flags field of ciss_vpd_logical_volume_status */
#define CISS_LV_FLAGS_NO_HOST_IO	0x1	/* volume not available for */
						/* host I/O */

/* for SAS hosts and SAS expanders */
struct pqi_sas_node {
	struct device *parent_dev;
	struct list_head port_list_head;
};

struct pqi_sas_port {
	struct list_head port_list_entry;
	u64	sas_address;
	struct sas_port *port;
	int	next_phy_index;
	struct list_head phy_list_head;
	struct pqi_sas_node *parent_node;
	struct sas_rphy *rphy;
};

struct pqi_sas_phy {
	struct list_head phy_list_entry;
	struct sas_phy *phy;
	struct pqi_sas_port *parent_port;
	bool	added_to_port;
};

struct pqi_io_request {
	atomic_t	refcount;
	u16		index;
	void (*io_complete_callback)(struct pqi_io_request *io_request,
		void *context);
	void		*context;
	u8		raid_bypass : 1;
	int		status;
	struct pqi_queue_group *queue_group;
	struct scsi_cmnd *scmd;
	void		*error_info;
	struct pqi_sg_descriptor *sg_chain_buffer;
	dma_addr_t	sg_chain_buffer_dma_handle;
	void		*iu;
	struct list_head request_list_entry;
};

#define PQI_NUM_SUPPORTED_EVENTS	6

struct pqi_event {
	bool	pending;
	u8	event_type;
	__le16	event_id;
	__le32	additional_event_id;
};

#define PQI_RESERVED_IO_SLOTS_LUN_RESET			1
#define PQI_RESERVED_IO_SLOTS_EVENT_ACK			PQI_NUM_SUPPORTED_EVENTS
#define PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS	3
#define PQI_RESERVED_IO_SLOTS				\
	(PQI_RESERVED_IO_SLOTS_LUN_RESET + PQI_RESERVED_IO_SLOTS_EVENT_ACK + \
	PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS)

struct pqi_ctrl_info {
	unsigned int	ctrl_id;
	struct pci_dev	*pci_dev;
	char		firmware_version[11];
	void __iomem	*iomem_base;
	struct pqi_ctrl_registers __iomem *registers;
	struct pqi_device_registers __iomem *pqi_registers;
	u32		max_sg_entries;
	u32		config_table_offset;
	u32		config_table_length;
	u16		max_inbound_queues;
	u16		max_elements_per_iq;
	u16		max_iq_element_length;
	u16		max_outbound_queues;
	u16		max_elements_per_oq;
	u16		max_oq_element_length;
	u32		max_transfer_size;
	u32		max_outstanding_requests;
	u32		max_io_slots;
	unsigned int	scsi_ml_can_queue;
	unsigned short	sg_tablesize;
	unsigned int	max_sectors;
	u32		error_buffer_length;
	void		*error_buffer;
	dma_addr_t	error_buffer_dma_handle;
	size_t		sg_chain_buffer_length;
	unsigned int	num_queue_groups;
	u16		max_hw_queue_index;
	u16		num_elements_per_iq;
	u16		num_elements_per_oq;
	u16		max_inbound_iu_length_per_firmware;
	u16		max_inbound_iu_length;
	unsigned int	max_sg_per_iu;
	void		*admin_queue_memory_base;
	u32		admin_queue_memory_length;
	dma_addr_t	admin_queue_memory_base_dma_handle;
	void		*queue_memory_base;
	u32		queue_memory_length;
	dma_addr_t	queue_memory_base_dma_handle;
	struct pqi_admin_queues admin_queues;
	struct pqi_queue_group queue_groups[PQI_MAX_QUEUE_GROUPS];
	struct pqi_event_queue event_queue;
	enum pqi_irq_mode irq_mode;
	int		max_msix_vectors;
	int		num_msix_vectors_enabled;
	int		num_msix_vectors_initialized;
	int		event_irq;
	struct Scsi_Host *scsi_host;

	struct mutex	scan_mutex;
	struct mutex	lun_reset_mutex;
	bool		controller_online;
	bool		block_requests;
	u8		inbound_spanning_supported : 1;
	u8		outbound_spanning_supported : 1;
	u8		pqi_mode_enabled : 1;
	u8		pqi_reset_quiesce_supported : 1;

	struct list_head scsi_device_list;
	spinlock_t	scsi_device_list_lock;

	struct delayed_work rescan_work;
	struct delayed_work update_time_work;

	struct pqi_sas_node *sas_host;
	u64		sas_address;

	struct pqi_io_request *io_request_pool;
	u16		next_io_request_slot;

	struct pqi_event events[PQI_NUM_SUPPORTED_EVENTS];
	struct work_struct event_work;

	atomic_t	num_interrupts;
	int		previous_num_interrupts;
	u32		previous_heartbeat_count;
	__le32 __iomem	*heartbeat_counter;
	struct timer_list heartbeat_timer;
	struct work_struct ctrl_offline_work;

	struct semaphore sync_request_sem;
	atomic_t	num_busy_threads;
	atomic_t	num_blocked_threads;
	wait_queue_head_t block_requests_wait;

	struct list_head raid_bypass_retry_list;
	spinlock_t	raid_bypass_retry_list_lock;
	struct work_struct raid_bypass_retry_work;
};

enum pqi_ctrl_mode {
	SIS_MODE = 0,
	PQI_MODE
};

/*
 * assume worst case: SATA queue depth of 31 minus 4 internal firmware commands
 */
#define PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH	27

/* CISS commands */
#define CISS_READ		0xc0
#define CISS_REPORT_LOG		0xc2	/* Report Logical LUNs */
#define CISS_REPORT_PHYS	0xc3	/* Report Physical LUNs */
#define CISS_GET_RAID_MAP	0xc8

/* constants for CISS_REPORT_LOG/CISS_REPORT_PHYS commands */
#define CISS_REPORT_LOG_EXTENDED		0x1
#define CISS_REPORT_PHYS_EXTENDED		0x2

/* BMIC commands */
#define BMIC_IDENTIFY_CONTROLLER		0x11
#define BMIC_IDENTIFY_PHYSICAL_DEVICE		0x15
#define BMIC_READ				0x26
#define BMIC_WRITE				0x27
#define BMIC_SENSE_CONTROLLER_PARAMETERS	0x64
#define BMIC_SENSE_SUBSYSTEM_INFORMATION	0x66
#define BMIC_WRITE_HOST_WELLNESS		0xa5
#define BMIC_FLUSH_CACHE			0xc2

#define SA_FLUSH_CACHE				0x1

#define MASKED_DEVICE(lunid)			((lunid)[3] & 0xc0)
#define CISS_GET_LEVEL_2_BUS(lunid)		((lunid)[7] & 0x3f)
#define CISS_GET_LEVEL_2_TARGET(lunid)		((lunid)[6])
#define CISS_GET_DRIVE_NUMBER(lunid)		\
	(((CISS_GET_LEVEL_2_BUS((lunid)) - 1) << 8) + \
	CISS_GET_LEVEL_2_TARGET((lunid)))

#define NO_TIMEOUT		((unsigned long) -1)

#pragma pack(1)

struct bmic_identify_controller {
	u8	configured_logical_drive_count;
	__le32	configuration_signature;
	u8	firmware_version[4];
	u8	reserved[145];
	__le16	extended_logical_unit_count;
	u8	reserved1[34];
	__le16	firmware_build_number;
	u8	reserved2[100];
	u8	controller_mode;
	u8	reserved3[32];
};

struct bmic_identify_physical_device {
	u8	scsi_bus;		/* SCSI Bus number on controller */
	u8	scsi_id;		/* SCSI ID on this bus */
	__le16	block_size;		/* sector size in bytes */
	__le32	total_blocks;		/* number for sectors on drive */
	__le32	reserved_blocks;	/* controller reserved (RIS) */
	u8	model[40];		/* Physical Drive Model */
	u8	serial_number[40];	/* Drive Serial Number */
	u8	firmware_revision[8];	/* drive firmware revision */
	u8	scsi_inquiry_bits;	/* inquiry byte 7 bits */
	u8	compaq_drive_stamp;	/* 0 means drive not stamped */
	u8	last_failure_reason;
	u8	flags;
	u8	more_flags;
	u8	scsi_lun;		/* SCSI LUN for phys drive */
	u8	yet_more_flags;
	u8	even_more_flags;
	__le32	spi_speed_rules;
	u8	phys_connector[2];	/* connector number on controller */
	u8	phys_box_on_bus;	/* phys enclosure this drive resides */
	u8	phys_bay_in_box;	/* phys drv bay this drive resides */
	__le32	rpm;			/* drive rotational speed in RPM */
	u8	device_type;		/* type of drive */
	u8	sata_version;		/* only valid when device_type = */
					/* BMIC_DEVICE_TYPE_SATA */
	__le64	big_total_block_count;
	__le64	ris_starting_lba;
	__le32	ris_size;
	u8	wwid[20];
	u8	controller_phy_map[32];
	__le16	phy_count;
	u8	phy_connected_dev_type[256];
	u8	phy_to_drive_bay_num[256];
	__le16	phy_to_attached_dev_index[256];
	u8	box_index;
	u8	reserved;
	__le16	extra_physical_drive_flags;
	u8	negotiated_link_rate[256];
	u8	phy_to_phy_map[256];
	u8	redundant_path_present_map;
	u8	redundant_path_failure_map;
	u8	active_path_number;
	__le16	alternate_paths_phys_connector[8];
	u8	alternate_paths_phys_box_on_port[8];
	u8	multi_lun_device_lun_count;
	u8	minimum_good_fw_revision[8];
	u8	unique_inquiry_bytes[20];
	u8	current_temperature_degrees;
	u8	temperature_threshold_degrees;
	u8	max_temperature_degrees;
	u8	logical_blocks_per_phys_block_exp;
	__le16	current_queue_depth_limit;
	u8	switch_name[10];
	__le16	switch_port;
	u8	alternate_paths_switch_name[40];
	u8	alternate_paths_switch_port[8];
	__le16	power_on_hours;
	__le16	percent_endurance_used;
	u8	drive_authentication;
	u8	smart_carrier_authentication;
	u8	smart_carrier_app_fw_version;
	u8	smart_carrier_bootloader_fw_version;
	u8	sanitize_flags;
	u8	encryption_key_flags;
	u8	encryption_key_name[64];
	__le32	misc_drive_flags;
	__le16	dek_index;
	__le16	hba_drive_encryption_flags;
	__le16	max_overwrite_time;
	__le16	max_block_erase_time;
	__le16	max_crypto_erase_time;
	u8	connector_info[5];
	u8	connector_name[8][8];
	u8	page_83_identifier[16];
	u8	maximum_link_rate[256];
	u8	negotiated_physical_link_rate[256];
	u8	box_connector_name[8];
	u8	padding_to_multiple_of_512[9];
};

struct bmic_flush_cache {
	u8	disable_flag;
	u8	system_power_action;
	u8	ndu_flush;
	u8	shutdown_event;
	u8	reserved[28];
};

/* for shutdown_event member of struct bmic_flush_cache */
enum bmic_flush_cache_shutdown_event {
	NONE_CACHE_FLUSH_ONLY = 0,
	SHUTDOWN = 1,
	HIBERNATE = 2,
	SUSPEND = 3,
	RESTART = 4
};

#pragma pack()

int pqi_add_sas_host(struct Scsi_Host *shost, struct pqi_ctrl_info *ctrl_info);
void pqi_delete_sas_host(struct pqi_ctrl_info *ctrl_info);
int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node,
	struct pqi_scsi_dev *device);
void pqi_remove_sas_device(struct pqi_scsi_dev *device);
struct pqi_scsi_dev *pqi_find_device_by_sas_rphy(
	struct pqi_ctrl_info *ctrl_info, struct sas_rphy *rphy);
void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd);

extern struct sas_function_template pqi_sas_transport_functions;

#endif /* _SMARTPQI_H */