xref: /openbmc/linux/drivers/scsi/smartpqi/smartpqi.h (revision 3d40aed8)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *    driver for Microchip PQI-based storage controllers
4  *    Copyright (c) 2019-2023 Microchip Technology Inc. and its subsidiaries
5  *    Copyright (c) 2016-2018 Microsemi Corporation
6  *    Copyright (c) 2016 PMC-Sierra, Inc.
7  *
8  *    Questions/Comments/Bugfixes to storagedev@microchip.com
9  *
10  */
11 
12 #include <linux/io-64-nonatomic-lo-hi.h>
13 
14 #if !defined(_SMARTPQI_H)
15 #define _SMARTPQI_H
16 
17 #include <scsi/scsi_host.h>
18 #include <linux/bsg-lib.h>
19 
20 #pragma pack(1)
21 
22 #define PQI_DEVICE_SIGNATURE	"PQI DREG"
23 
24 /* This structure is defined by the PQI specification. */
25 struct pqi_device_registers {
26 	__le64	signature;
27 	u8	function_and_status_code;
28 	u8	reserved[7];
29 	u8	max_admin_iq_elements;
30 	u8	max_admin_oq_elements;
31 	u8	admin_iq_element_length;	/* in 16-byte units */
32 	u8	admin_oq_element_length;	/* in 16-byte units */
33 	__le16	max_reset_timeout;		/* in 100-millisecond units */
34 	u8	reserved1[2];
35 	__le32	legacy_intx_status;
36 	__le32	legacy_intx_mask_set;
37 	__le32	legacy_intx_mask_clear;
38 	u8	reserved2[28];
39 	__le32	device_status;
40 	u8	reserved3[4];
41 	__le64	admin_iq_pi_offset;
42 	__le64	admin_oq_ci_offset;
43 	__le64	admin_iq_element_array_addr;
44 	__le64	admin_oq_element_array_addr;
45 	__le64	admin_iq_ci_addr;
46 	__le64	admin_oq_pi_addr;
47 	u8	admin_iq_num_elements;
48 	u8	admin_oq_num_elements;
49 	__le16	admin_queue_int_msg_num;
50 	u8	reserved4[4];
51 	__le32	device_error;
52 	u8	reserved5[4];
53 	__le64	error_details;
54 	__le32	device_reset;
55 	__le32	power_action;
56 	u8	reserved6[104];
57 };
58 
59 /*
60  * controller registers
61  *
62  * These are defined by the Microchip implementation.
63  *
64  * Some registers (those named sis_*) are only used when in
65  * legacy SIS mode before we transition the controller into
66  * PQI mode.  There are a number of other SIS mode registers,
67  * but we don't use them, so only the SIS registers that we
68  * care about are defined here.  The offsets mentioned in the
69  * comments are the offsets from the PCIe BAR 0.
70  */
71 struct pqi_ctrl_registers {
72 	u8	reserved[0x20];
73 	__le32	sis_host_to_ctrl_doorbell;		/* 20h */
74 	u8	reserved1[0x34 - (0x20 + sizeof(__le32))];
75 	__le32	sis_interrupt_mask;			/* 34h */
76 	u8	reserved2[0x9c - (0x34 + sizeof(__le32))];
77 	__le32	sis_ctrl_to_host_doorbell;		/* 9Ch */
78 	u8	reserved3[0xa0 - (0x9c + sizeof(__le32))];
79 	__le32	sis_ctrl_to_host_doorbell_clear;	/* A0h */
80 	u8	reserved4[0xb0 - (0xa0 + sizeof(__le32))];
81 	__le32	sis_driver_scratch;			/* B0h */
82 	__le32  sis_product_identifier;			/* B4h */
83 	u8	reserved5[0xbc - (0xb4 + sizeof(__le32))];
84 	__le32	sis_firmware_status;			/* BCh */
85 	u8	reserved6[0xcc - (0xbc + sizeof(__le32))];
86 	__le32	sis_ctrl_shutdown_reason_code;		/* CCh */
87 	u8	reserved7[0x1000 - (0xcc + sizeof(__le32))];
88 	__le32	sis_mailbox[8];				/* 1000h */
89 	u8	reserved8[0x4000 - (0x1000 + (sizeof(__le32) * 8))];
90 	/*
91 	 * The PQI spec states that the PQI registers should be at
92 	 * offset 0 from the PCIe BAR 0.  However, we can't map
93 	 * them at offset 0 because that would break compatibility
94 	 * with the SIS registers.  So we map them at offset 4000h.
95 	 */
96 	struct pqi_device_registers pqi_registers;	/* 4000h */
97 };
98 
99 #define PQI_DEVICE_REGISTERS_OFFSET	0x4000
100 
101 /* shutdown reasons for taking the controller offline */
102 enum pqi_ctrl_shutdown_reason {
103 	PQI_IQ_NOT_DRAINED_TIMEOUT = 1,
104 	PQI_LUN_RESET_TIMEOUT = 2,
105 	PQI_IO_PENDING_POST_LUN_RESET_TIMEOUT = 3,
106 	PQI_NO_HEARTBEAT = 4,
107 	PQI_FIRMWARE_KERNEL_NOT_UP = 5,
108 	PQI_OFA_RESPONSE_TIMEOUT = 6,
109 	PQI_INVALID_REQ_ID = 7,
110 	PQI_UNMATCHED_REQ_ID = 8,
111 	PQI_IO_PI_OUT_OF_RANGE = 9,
112 	PQI_EVENT_PI_OUT_OF_RANGE = 10,
113 	PQI_UNEXPECTED_IU_TYPE = 11
114 };
115 
116 enum pqi_io_path {
117 	RAID_PATH = 0,
118 	AIO_PATH = 1
119 };
120 
121 enum pqi_irq_mode {
122 	IRQ_MODE_NONE,
123 	IRQ_MODE_INTX,
124 	IRQ_MODE_MSIX
125 };
126 
127 struct pqi_sg_descriptor {
128 	__le64	address;
129 	__le32	length;
130 	__le32	flags;
131 };
132 
133 /* manifest constants for the flags field of pqi_sg_descriptor */
134 #define CISS_SG_LAST	0x40000000
135 #define CISS_SG_CHAIN	0x80000000
136 
137 struct pqi_iu_header {
138 	u8	iu_type;
139 	u8	reserved;
140 	__le16	iu_length;	/* in bytes - does not include the length */
141 				/* of this header */
142 	__le16	response_queue_id;	/* specifies the OQ where the */
143 					/* response IU is to be delivered */
144 	u16	driver_flags;	/* reserved for driver use */
145 };
146 
147 /* manifest constants for pqi_iu_header.driver_flags */
148 #define PQI_DRIVER_NONBLOCKABLE_REQUEST		0x1
149 
150 /*
151  * According to the PQI spec, the IU header is only the first 4 bytes of our
152  * pqi_iu_header structure.
153  */
154 #define PQI_REQUEST_HEADER_LENGTH	4
155 
156 struct pqi_general_admin_request {
157 	struct pqi_iu_header header;
158 	__le16	request_id;
159 	u8	function_code;
160 	union {
161 		struct {
162 			u8	reserved[33];
163 			__le32	buffer_length;
164 			struct pqi_sg_descriptor sg_descriptor;
165 		} report_device_capability;
166 
167 		struct {
168 			u8	reserved;
169 			__le16	queue_id;
170 			u8	reserved1[2];
171 			__le64	element_array_addr;
172 			__le64	ci_addr;
173 			__le16	num_elements;
174 			__le16	element_length;
175 			u8	queue_protocol;
176 			u8	reserved2[23];
177 			__le32	vendor_specific;
178 		} create_operational_iq;
179 
180 		struct {
181 			u8	reserved;
182 			__le16	queue_id;
183 			u8	reserved1[2];
184 			__le64	element_array_addr;
185 			__le64	pi_addr;
186 			__le16	num_elements;
187 			__le16	element_length;
188 			u8	queue_protocol;
189 			u8	reserved2[3];
190 			__le16	int_msg_num;
191 			__le16	coalescing_count;
192 			__le32	min_coalescing_time;
193 			__le32	max_coalescing_time;
194 			u8	reserved3[8];
195 			__le32	vendor_specific;
196 		} create_operational_oq;
197 
198 		struct {
199 			u8	reserved;
200 			__le16	queue_id;
201 			u8	reserved1[50];
202 		} delete_operational_queue;
203 
204 		struct {
205 			u8	reserved;
206 			__le16	queue_id;
207 			u8	reserved1[46];
208 			__le32	vendor_specific;
209 		} change_operational_iq_properties;
210 
211 	} data;
212 };
213 
214 struct pqi_general_admin_response {
215 	struct pqi_iu_header header;
216 	__le16	request_id;
217 	u8	function_code;
218 	u8	status;
219 	union {
220 		struct {
221 			u8	status_descriptor[4];
222 			__le64	iq_pi_offset;
223 			u8	reserved[40];
224 		} create_operational_iq;
225 
226 		struct {
227 			u8	status_descriptor[4];
228 			__le64	oq_ci_offset;
229 			u8	reserved[40];
230 		} create_operational_oq;
231 	} data;
232 };
233 
234 struct pqi_iu_layer_descriptor {
235 	u8	inbound_spanning_supported : 1;
236 	u8	reserved : 7;
237 	u8	reserved1[5];
238 	__le16	max_inbound_iu_length;
239 	u8	outbound_spanning_supported : 1;
240 	u8	reserved2 : 7;
241 	u8	reserved3[5];
242 	__le16	max_outbound_iu_length;
243 };
244 
245 struct pqi_device_capability {
246 	__le16	data_length;
247 	u8	reserved[6];
248 	u8	iq_arbitration_priority_support_bitmask;
249 	u8	maximum_aw_a;
250 	u8	maximum_aw_b;
251 	u8	maximum_aw_c;
252 	u8	max_arbitration_burst : 3;
253 	u8	reserved1 : 4;
254 	u8	iqa : 1;
255 	u8	reserved2[2];
256 	u8	iq_freeze : 1;
257 	u8	reserved3 : 7;
258 	__le16	max_inbound_queues;
259 	__le16	max_elements_per_iq;
260 	u8	reserved4[4];
261 	__le16	max_iq_element_length;
262 	__le16	min_iq_element_length;
263 	u8	reserved5[2];
264 	__le16	max_outbound_queues;
265 	__le16	max_elements_per_oq;
266 	__le16	intr_coalescing_time_granularity;
267 	__le16	max_oq_element_length;
268 	__le16	min_oq_element_length;
269 	u8	reserved6[24];
270 	struct pqi_iu_layer_descriptor iu_layer_descriptors[32];
271 };
272 
273 #define PQI_MAX_EMBEDDED_SG_DESCRIPTORS		4
274 #define PQI_MAX_EMBEDDED_R56_SG_DESCRIPTORS	3
275 
276 struct pqi_raid_path_request {
277 	struct pqi_iu_header header;
278 	__le16	request_id;
279 	__le16	nexus_id;
280 	__le32	buffer_length;
281 	u8	lun_number[8];
282 	__le16	protocol_specific;
283 	u8	data_direction : 2;
284 	u8	partial : 1;
285 	u8	reserved1 : 4;
286 	u8	fence : 1;
287 	__le16	error_index;
288 	u8	reserved2;
289 	u8	task_attribute : 3;
290 	u8	command_priority : 4;
291 	u8	reserved3 : 1;
292 	u8	reserved4 : 2;
293 	u8	additional_cdb_bytes_usage : 3;
294 	u8	reserved5 : 3;
295 	u8	cdb[16];
296 	u8	reserved6[11];
297 	u8	ml_device_lun_number;
298 	__le32	timeout;
299 	struct pqi_sg_descriptor sg_descriptors[PQI_MAX_EMBEDDED_SG_DESCRIPTORS];
300 };
301 
302 struct pqi_aio_path_request {
303 	struct pqi_iu_header header;
304 	__le16	request_id;
305 	u8	reserved1[2];
306 	__le32	nexus_id;
307 	__le32	buffer_length;
308 	u8	data_direction : 2;
309 	u8	partial : 1;
310 	u8	memory_type : 1;
311 	u8	fence : 1;
312 	u8	encryption_enable : 1;
313 	u8	reserved2 : 2;
314 	u8	task_attribute : 3;
315 	u8	command_priority : 4;
316 	u8	reserved3 : 1;
317 	__le16	data_encryption_key_index;
318 	__le32	encrypt_tweak_lower;
319 	__le32	encrypt_tweak_upper;
320 	u8	cdb[16];
321 	__le16	error_index;
322 	u8	num_sg_descriptors;
323 	u8	cdb_length;
324 	u8	lun_number[8];
325 	u8	reserved4[4];
326 	struct pqi_sg_descriptor sg_descriptors[PQI_MAX_EMBEDDED_SG_DESCRIPTORS];
327 };
328 
329 #define PQI_RAID1_NVME_XFER_LIMIT	(32 * 1024)	/* 32 KiB */
330 
331 struct pqi_aio_r1_path_request {
332 	struct pqi_iu_header header;
333 	__le16	request_id;
334 	__le16	volume_id;	/* ID of the RAID volume */
335 	__le32	it_nexus_1;	/* IT nexus of the 1st drive in the RAID volume */
336 	__le32	it_nexus_2;	/* IT nexus of the 2nd drive in the RAID volume */
337 	__le32	it_nexus_3;	/* IT nexus of the 3rd drive in the RAID volume */
338 	__le32	data_length;	/* total bytes to read/write */
339 	u8	data_direction : 2;
340 	u8	partial : 1;
341 	u8	memory_type : 1;
342 	u8	fence : 1;
343 	u8	encryption_enable : 1;
344 	u8	reserved : 2;
345 	u8	task_attribute : 3;
346 	u8	command_priority : 4;
347 	u8	reserved2 : 1;
348 	__le16	data_encryption_key_index;
349 	u8	cdb[16];
350 	__le16	error_index;
351 	u8	num_sg_descriptors;
352 	u8	cdb_length;
353 	u8	num_drives;	/* number of drives in the RAID volume (2 or 3) */
354 	u8	reserved3[3];
355 	__le32	encrypt_tweak_lower;
356 	__le32	encrypt_tweak_upper;
357 	struct pqi_sg_descriptor sg_descriptors[PQI_MAX_EMBEDDED_SG_DESCRIPTORS];
358 };
359 
360 #define PQI_DEFAULT_MAX_WRITE_RAID_5_6			(8 * 1024U)
361 #define PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_SAS_SATA	(~0U)
362 #define PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_NVME		(32 * 1024U)
363 
364 struct pqi_aio_r56_path_request {
365 	struct pqi_iu_header header;
366 	__le16	request_id;
367 	__le16	volume_id;		/* ID of the RAID volume */
368 	__le32	data_it_nexus;		/* IT nexus for the data drive */
369 	__le32	p_parity_it_nexus;	/* IT nexus for the P parity drive */
370 	__le32	q_parity_it_nexus;	/* IT nexus for the Q parity drive */
371 	__le32	data_length;		/* total bytes to read/write */
372 	u8	data_direction : 2;
373 	u8	partial : 1;
374 	u8	mem_type : 1;		/* 0 = PCIe, 1 = DDR */
375 	u8	fence : 1;
376 	u8	encryption_enable : 1;
377 	u8	reserved : 2;
378 	u8	task_attribute : 3;
379 	u8	command_priority : 4;
380 	u8	reserved1 : 1;
381 	__le16	data_encryption_key_index;
382 	u8	cdb[16];
383 	__le16	error_index;
384 	u8	num_sg_descriptors;
385 	u8	cdb_length;
386 	u8	xor_multiplier;
387 	u8	reserved2[3];
388 	__le32	encrypt_tweak_lower;
389 	__le32	encrypt_tweak_upper;
390 	__le64	row;			/* row = logical LBA/blocks per row */
391 	u8	reserved3[8];
392 	struct pqi_sg_descriptor sg_descriptors[PQI_MAX_EMBEDDED_R56_SG_DESCRIPTORS];
393 };
394 
395 struct pqi_io_response {
396 	struct pqi_iu_header header;
397 	__le16	request_id;
398 	__le16	error_index;
399 	u8	reserved2[4];
400 };
401 
402 struct pqi_general_management_request {
403 	struct pqi_iu_header header;
404 	__le16	request_id;
405 	union {
406 		struct {
407 			u8	reserved[2];
408 			__le32	buffer_length;
409 			struct pqi_sg_descriptor sg_descriptors[3];
410 		} report_event_configuration;
411 
412 		struct {
413 			__le16	global_event_oq_id;
414 			__le32	buffer_length;
415 			struct pqi_sg_descriptor sg_descriptors[3];
416 		} set_event_configuration;
417 	} data;
418 };
419 
420 struct pqi_event_descriptor {
421 	u8	event_type;
422 	u8	reserved;
423 	__le16	oq_id;
424 };
425 
426 struct pqi_event_config {
427 	u8	reserved[2];
428 	u8	num_event_descriptors;
429 	u8	reserved1;
430 	struct pqi_event_descriptor descriptors[];
431 };
432 
433 #define PQI_MAX_EVENT_DESCRIPTORS	255
434 
435 #define PQI_EVENT_OFA_MEMORY_ALLOCATION	0x0
436 #define PQI_EVENT_OFA_QUIESCE		0x1
437 #define PQI_EVENT_OFA_CANCELED		0x2
438 
439 struct pqi_event_response {
440 	struct pqi_iu_header header;
441 	u8	event_type;
442 	u8	reserved2 : 7;
443 	u8	request_acknowledge : 1;
444 	__le16	event_id;
445 	__le32	additional_event_id;
446 	union {
447 		struct {
448 			__le32	bytes_requested;
449 			u8	reserved[12];
450 		} ofa_memory_allocation;
451 
452 		struct {
453 			__le16	reason;		/* reason for cancellation */
454 			u8	reserved[14];
455 		} ofa_cancelled;
456 	} data;
457 };
458 
459 struct pqi_event_acknowledge_request {
460 	struct pqi_iu_header header;
461 	u8	event_type;
462 	u8	reserved2;
463 	__le16	event_id;
464 	__le32	additional_event_id;
465 };
466 
467 struct pqi_task_management_request {
468 	struct pqi_iu_header header;
469 	__le16	request_id;
470 	__le16	nexus_id;
471 	u8	reserved;
472 	u8	ml_device_lun_number;
473 	__le16  timeout;
474 	u8	lun_number[8];
475 	__le16	protocol_specific;
476 	__le16	outbound_queue_id_to_manage;
477 	__le16	request_id_to_manage;
478 	u8	task_management_function;
479 	u8	reserved2 : 7;
480 	u8	fence : 1;
481 };
482 
483 #define SOP_TASK_MANAGEMENT_LUN_RESET	0x8
484 
485 struct pqi_task_management_response {
486 	struct pqi_iu_header header;
487 	__le16	request_id;
488 	__le16	nexus_id;
489 	u8	additional_response_info[3];
490 	u8	response_code;
491 };
492 
493 struct pqi_vendor_general_request {
494 	struct pqi_iu_header header;
495 	__le16	request_id;
496 	__le16	function_code;
497 	union {
498 		struct {
499 			__le16	first_section;
500 			__le16	last_section;
501 			u8	reserved[48];
502 		} config_table_update;
503 
504 		struct {
505 			__le64	buffer_address;
506 			__le32	buffer_length;
507 			u8	reserved[40];
508 		} ofa_memory_allocation;
509 	} data;
510 };
511 
512 struct pqi_vendor_general_response {
513 	struct pqi_iu_header header;
514 	__le16	request_id;
515 	__le16	function_code;
516 	__le16	status;
517 	u8	reserved[2];
518 };
519 
520 #define PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE	0
521 #define PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE	1
522 
523 #define PQI_OFA_VERSION			1
524 #define PQI_OFA_SIGNATURE		"OFA_QRM"
525 #define PQI_OFA_MAX_SG_DESCRIPTORS	64
526 
527 struct pqi_ofa_memory {
528 	__le64	signature;	/* "OFA_QRM" */
529 	__le16	version;	/* version of this struct (1 = 1st version) */
530 	u8	reserved[62];
531 	__le32	bytes_allocated;	/* total allocated memory in bytes */
532 	__le16	num_memory_descriptors;
533 	u8	reserved1[2];
534 	struct pqi_sg_descriptor sg_descriptor[PQI_OFA_MAX_SG_DESCRIPTORS];
535 };
536 
537 struct pqi_aio_error_info {
538 	u8	status;
539 	u8	service_response;
540 	u8	data_present;
541 	u8	reserved;
542 	__le32	residual_count;
543 	__le16	data_length;
544 	__le16	reserved1;
545 	u8	data[256];
546 };
547 
548 struct pqi_raid_error_info {
549 	u8	data_in_result;
550 	u8	data_out_result;
551 	u8	reserved[3];
552 	u8	status;
553 	__le16	status_qualifier;
554 	__le16	sense_data_length;
555 	__le16	response_data_length;
556 	__le32	data_in_transferred;
557 	__le32	data_out_transferred;
558 	u8	data[256];
559 };
560 
561 #define PQI_REQUEST_IU_TASK_MANAGEMENT			0x13
562 #define PQI_REQUEST_IU_RAID_PATH_IO			0x14
563 #define PQI_REQUEST_IU_AIO_PATH_IO			0x15
564 #define PQI_REQUEST_IU_AIO_PATH_RAID5_IO		0x18
565 #define PQI_REQUEST_IU_AIO_PATH_RAID6_IO		0x19
566 #define PQI_REQUEST_IU_AIO_PATH_RAID1_IO		0x1A
567 #define PQI_REQUEST_IU_GENERAL_ADMIN			0x60
568 #define PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG	0x72
569 #define PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG		0x73
570 #define PQI_REQUEST_IU_VENDOR_GENERAL			0x75
571 #define PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT		0xf6
572 
573 #define PQI_RESPONSE_IU_GENERAL_MANAGEMENT		0x81
574 #define PQI_RESPONSE_IU_TASK_MANAGEMENT			0x93
575 #define PQI_RESPONSE_IU_GENERAL_ADMIN			0xe0
576 #define PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS		0xf0
577 #define PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS		0xf1
578 #define PQI_RESPONSE_IU_RAID_PATH_IO_ERROR		0xf2
579 #define PQI_RESPONSE_IU_AIO_PATH_IO_ERROR		0xf3
580 #define PQI_RESPONSE_IU_AIO_PATH_DISABLED		0xf4
581 #define PQI_RESPONSE_IU_VENDOR_EVENT			0xf5
582 #define PQI_RESPONSE_IU_VENDOR_GENERAL			0xf7
583 
584 #define PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY	0x0
585 #define PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ			0x10
586 #define PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ			0x11
587 #define PQI_GENERAL_ADMIN_FUNCTION_DELETE_IQ			0x12
588 #define PQI_GENERAL_ADMIN_FUNCTION_DELETE_OQ			0x13
589 #define PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY		0x14
590 
591 #define PQI_GENERAL_ADMIN_STATUS_SUCCESS	0x0
592 
593 #define PQI_IQ_PROPERTY_IS_AIO_QUEUE	0x1
594 
595 #define PQI_GENERAL_ADMIN_IU_LENGTH		0x3c
596 #define PQI_PROTOCOL_SOP			0x0
597 
598 #define PQI_DATA_IN_OUT_GOOD					0x0
599 #define PQI_DATA_IN_OUT_UNDERFLOW				0x1
600 #define PQI_DATA_IN_OUT_BUFFER_ERROR				0x40
601 #define PQI_DATA_IN_OUT_BUFFER_OVERFLOW				0x41
602 #define PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA		0x42
603 #define PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE			0x43
604 #define PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR			0x60
605 #define PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT			0x61
606 #define PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED		0x62
607 #define PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED	0x63
608 #define PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED			0x64
609 #define PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST		0x65
610 #define PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION			0x66
611 #define PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED			0x67
612 #define PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ		0x6F
613 #define PQI_DATA_IN_OUT_ERROR					0xf0
614 #define PQI_DATA_IN_OUT_PROTOCOL_ERROR				0xf1
615 #define PQI_DATA_IN_OUT_HARDWARE_ERROR				0xf2
616 #define PQI_DATA_IN_OUT_UNSOLICITED_ABORT			0xf3
617 #define PQI_DATA_IN_OUT_ABORTED					0xf4
618 #define PQI_DATA_IN_OUT_TIMEOUT					0xf5
619 
620 #define CISS_CMD_STATUS_SUCCESS			0x0
621 #define CISS_CMD_STATUS_TARGET_STATUS		0x1
622 #define CISS_CMD_STATUS_DATA_UNDERRUN		0x2
623 #define CISS_CMD_STATUS_DATA_OVERRUN		0x3
624 #define CISS_CMD_STATUS_INVALID			0x4
625 #define CISS_CMD_STATUS_PROTOCOL_ERROR		0x5
626 #define CISS_CMD_STATUS_HARDWARE_ERROR		0x6
627 #define CISS_CMD_STATUS_CONNECTION_LOST		0x7
628 #define CISS_CMD_STATUS_ABORTED			0x8
629 #define CISS_CMD_STATUS_ABORT_FAILED		0x9
630 #define CISS_CMD_STATUS_UNSOLICITED_ABORT	0xa
631 #define CISS_CMD_STATUS_TIMEOUT			0xb
632 #define CISS_CMD_STATUS_UNABORTABLE		0xc
633 #define CISS_CMD_STATUS_TMF			0xd
634 #define CISS_CMD_STATUS_AIO_DISABLED		0xe
635 
636 #define PQI_CMD_STATUS_ABORTED	CISS_CMD_STATUS_ABORTED
637 
638 #define PQI_NUM_EVENT_QUEUE_ELEMENTS	32
639 #define PQI_EVENT_OQ_ELEMENT_LENGTH	sizeof(struct pqi_event_response)
640 
641 #define PQI_EVENT_TYPE_HOTPLUG			0x1
642 #define PQI_EVENT_TYPE_HARDWARE			0x2
643 #define PQI_EVENT_TYPE_PHYSICAL_DEVICE		0x4
644 #define PQI_EVENT_TYPE_LOGICAL_DEVICE		0x5
645 #define PQI_EVENT_TYPE_OFA			0xfb
646 #define PQI_EVENT_TYPE_AIO_STATE_CHANGE		0xfd
647 #define PQI_EVENT_TYPE_AIO_CONFIG_CHANGE	0xfe
648 
649 #pragma pack()
650 
651 #define PQI_ERROR_BUFFER_ELEMENT_LENGTH		\
652 	sizeof(struct pqi_raid_error_info)
653 
654 /* these values are based on our implementation */
655 #define PQI_ADMIN_IQ_NUM_ELEMENTS		8
656 #define PQI_ADMIN_OQ_NUM_ELEMENTS		20
657 #define PQI_ADMIN_IQ_ELEMENT_LENGTH		64
658 #define PQI_ADMIN_OQ_ELEMENT_LENGTH		64
659 
660 #define PQI_OPERATIONAL_IQ_ELEMENT_LENGTH	128
661 #define PQI_OPERATIONAL_OQ_ELEMENT_LENGTH	16
662 
663 #define PQI_MIN_MSIX_VECTORS		1
664 #define PQI_MAX_MSIX_VECTORS		64
665 
666 /* these values are defined by the PQI spec */
667 #define PQI_MAX_NUM_ELEMENTS_ADMIN_QUEUE	255
668 #define PQI_MAX_NUM_ELEMENTS_OPERATIONAL_QUEUE	65535
669 
670 #define PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT	64
671 #define PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT	16
672 #define PQI_ADMIN_INDEX_ALIGNMENT		64
673 #define PQI_OPERATIONAL_INDEX_ALIGNMENT		4
674 
675 #define PQI_MIN_OPERATIONAL_QUEUE_ID		1
676 #define PQI_MAX_OPERATIONAL_QUEUE_ID		65535
677 
678 #define PQI_AIO_SERV_RESPONSE_COMPLETE		0
679 #define PQI_AIO_SERV_RESPONSE_FAILURE		1
680 #define PQI_AIO_SERV_RESPONSE_TMF_COMPLETE	2
681 #define PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED	3
682 #define PQI_AIO_SERV_RESPONSE_TMF_REJECTED	4
683 #define PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN	5
684 
685 #define PQI_AIO_STATUS_IO_ERROR			0x1
686 #define PQI_AIO_STATUS_IO_ABORTED		0x2
687 #define PQI_AIO_STATUS_NO_PATH_TO_DEVICE	0x3
688 #define PQI_AIO_STATUS_INVALID_DEVICE		0x4
689 #define PQI_AIO_STATUS_AIO_PATH_DISABLED	0xe
690 #define PQI_AIO_STATUS_UNDERRUN			0x51
691 #define PQI_AIO_STATUS_OVERRUN			0x75
692 
693 typedef u32 pqi_index_t;
694 
695 /* SOP data direction flags */
696 #define SOP_NO_DIRECTION_FLAG	0
697 #define SOP_WRITE_FLAG		1	/* host writes data to Data-Out */
698 					/* buffer */
699 #define SOP_READ_FLAG		2	/* host receives data from Data-In */
700 					/* buffer */
701 #define SOP_BIDIRECTIONAL	3	/* data is transferred from the */
702 					/* Data-Out buffer and data is */
703 					/* transferred to the Data-In buffer */
704 
705 #define SOP_TASK_ATTRIBUTE_SIMPLE		0
706 #define SOP_TASK_ATTRIBUTE_HEAD_OF_QUEUE	1
707 #define SOP_TASK_ATTRIBUTE_ORDERED		2
708 #define SOP_TASK_ATTRIBUTE_ACA			4
709 
710 #define SOP_TMF_COMPLETE		0x0
711 #define SOP_TMF_REJECTED		0x4
712 #define SOP_TMF_FUNCTION_SUCCEEDED	0x8
713 #define SOP_RC_INCORRECT_LOGICAL_UNIT	0x9
714 
715 /* additional CDB bytes usage field codes */
716 #define SOP_ADDITIONAL_CDB_BYTES_0	0	/* 16-byte CDB */
717 #define SOP_ADDITIONAL_CDB_BYTES_4	1	/* 20-byte CDB */
718 #define SOP_ADDITIONAL_CDB_BYTES_8	2	/* 24-byte CDB */
719 #define SOP_ADDITIONAL_CDB_BYTES_12	3	/* 28-byte CDB */
720 #define SOP_ADDITIONAL_CDB_BYTES_16	4	/* 32-byte CDB */
721 
722 /*
723  * The purpose of this structure is to obtain proper alignment of objects in
724  * an admin queue pair.
725  */
726 struct pqi_admin_queues_aligned {
727 	__aligned(PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT)
728 		u8	iq_element_array[PQI_ADMIN_IQ_ELEMENT_LENGTH]
729 					[PQI_ADMIN_IQ_NUM_ELEMENTS];
730 	__aligned(PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT)
731 		u8	oq_element_array[PQI_ADMIN_OQ_ELEMENT_LENGTH]
732 					[PQI_ADMIN_OQ_NUM_ELEMENTS];
733 	__aligned(PQI_ADMIN_INDEX_ALIGNMENT) pqi_index_t iq_ci;
734 	__aligned(PQI_ADMIN_INDEX_ALIGNMENT) pqi_index_t oq_pi;
735 };
736 
737 struct pqi_admin_queues {
738 	void		*iq_element_array;
739 	void		*oq_element_array;
740 	pqi_index_t __iomem *iq_ci;
741 	pqi_index_t __iomem *oq_pi;
742 	dma_addr_t	iq_element_array_bus_addr;
743 	dma_addr_t	oq_element_array_bus_addr;
744 	dma_addr_t	iq_ci_bus_addr;
745 	dma_addr_t	oq_pi_bus_addr;
746 	__le32 __iomem	*iq_pi;
747 	pqi_index_t	iq_pi_copy;
748 	__le32 __iomem	*oq_ci;
749 	pqi_index_t	oq_ci_copy;
750 	struct task_struct *task;
751 	u16		int_msg_num;
752 };
753 
754 struct pqi_queue_group {
755 	struct pqi_ctrl_info *ctrl_info;	/* backpointer */
756 	u16		iq_id[2];
757 	u16		oq_id;
758 	u16		int_msg_num;
759 	void		*iq_element_array[2];
760 	void		*oq_element_array;
761 	dma_addr_t	iq_element_array_bus_addr[2];
762 	dma_addr_t	oq_element_array_bus_addr;
763 	__le32 __iomem	*iq_pi[2];
764 	pqi_index_t	iq_pi_copy[2];
765 	pqi_index_t __iomem *iq_ci[2];
766 	pqi_index_t __iomem *oq_pi;
767 	dma_addr_t	iq_ci_bus_addr[2];
768 	dma_addr_t	oq_pi_bus_addr;
769 	__le32 __iomem	*oq_ci;
770 	pqi_index_t	oq_ci_copy;
771 	spinlock_t	submit_lock[2];	/* protect submission queue */
772 	struct list_head request_list[2];
773 };
774 
775 struct pqi_event_queue {
776 	u16		oq_id;
777 	u16		int_msg_num;
778 	void		*oq_element_array;
779 	pqi_index_t __iomem *oq_pi;
780 	dma_addr_t	oq_element_array_bus_addr;
781 	dma_addr_t	oq_pi_bus_addr;
782 	__le32 __iomem	*oq_ci;
783 	pqi_index_t	oq_ci_copy;
784 };
785 
786 #define PQI_DEFAULT_QUEUE_GROUP		0
787 #define PQI_MAX_QUEUE_GROUPS		PQI_MAX_MSIX_VECTORS
788 
789 struct pqi_encryption_info {
790 	u16	data_encryption_key_index;
791 	u32	encrypt_tweak_lower;
792 	u32	encrypt_tweak_upper;
793 };
794 
795 #pragma pack(1)
796 
797 #define PQI_CONFIG_TABLE_SIGNATURE	"CFGTABLE"
798 #define PQI_CONFIG_TABLE_MAX_LENGTH	((u16)~0)
799 
800 /* configuration table section IDs */
801 #define PQI_CONFIG_TABLE_ALL_SECTIONS			(-1)
802 #define PQI_CONFIG_TABLE_SECTION_GENERAL_INFO		0
803 #define PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES	1
804 #define PQI_CONFIG_TABLE_SECTION_FIRMWARE_ERRATA	2
805 #define PQI_CONFIG_TABLE_SECTION_DEBUG			3
806 #define PQI_CONFIG_TABLE_SECTION_HEARTBEAT		4
807 #define PQI_CONFIG_TABLE_SECTION_SOFT_RESET		5
808 
809 struct pqi_config_table {
810 	u8	signature[8];		/* "CFGTABLE" */
811 	__le32	first_section_offset;	/* offset in bytes from the base */
812 					/* address of this table to the */
813 					/* first section */
814 };
815 
816 struct pqi_config_table_section_header {
817 	__le16	section_id;		/* as defined by the */
818 					/* PQI_CONFIG_TABLE_SECTION_* */
819 					/* manifest constants above */
820 	__le16	next_section_offset;	/* offset in bytes from base */
821 					/* address of the table of the */
822 					/* next section or 0 if last entry */
823 };
824 
825 struct pqi_config_table_general_info {
826 	struct pqi_config_table_section_header header;
827 	__le32	section_length;		/* size of this section in bytes */
828 					/* including the section header */
829 	__le32	max_outstanding_requests;	/* max. outstanding */
830 						/* commands supported by */
831 						/* the controller */
832 	__le32	max_sg_size;		/* max. transfer size of a single */
833 					/* command */
834 	__le32	max_sg_per_request;	/* max. number of scatter-gather */
835 					/* entries supported in a single */
836 					/* command */
837 };
838 
839 struct pqi_config_table_firmware_features {
840 	struct pqi_config_table_section_header header;
841 	__le16	num_elements;
842 	u8	features_supported[];
843 /*	u8	features_requested_by_host[]; */
844 /*	u8	features_enabled[]; */
845 /* The 2 fields below are only valid if the MAX_KNOWN_FEATURE bit is set. */
846 /*	__le16	firmware_max_known_feature; */
847 /*	__le16	host_max_known_feature; */
848 };
849 
850 #define PQI_FIRMWARE_FEATURE_OFA				0
851 #define PQI_FIRMWARE_FEATURE_SMP				1
852 #define PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE			2
853 #define PQI_FIRMWARE_FEATURE_RAID_0_READ_BYPASS			3
854 #define PQI_FIRMWARE_FEATURE_RAID_1_READ_BYPASS			4
855 #define PQI_FIRMWARE_FEATURE_RAID_5_READ_BYPASS			5
856 #define PQI_FIRMWARE_FEATURE_RAID_6_READ_BYPASS			6
857 #define PQI_FIRMWARE_FEATURE_RAID_0_WRITE_BYPASS		7
858 #define PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS		8
859 #define PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS		9
860 #define PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS		10
861 #define PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE		11
862 #define PQI_FIRMWARE_FEATURE_UNIQUE_SATA_WWN			12
863 #define PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT			13
864 #define PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT			14
865 #define PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME	15
866 #define PQI_FIRMWARE_FEATURE_UNIQUE_WWID_IN_REPORT_PHYS_LUN	16
867 #define PQI_FIRMWARE_FEATURE_FW_TRIAGE				17
868 #define PQI_FIRMWARE_FEATURE_RPL_EXTENDED_FORMAT_4_5		18
869 #define PQI_FIRMWARE_FEATURE_MULTI_LUN_DEVICE_SUPPORT           21
870 #define PQI_FIRMWARE_FEATURE_MAXIMUM                            21
871 
872 struct pqi_config_table_debug {
873 	struct pqi_config_table_section_header header;
874 	__le32	scratchpad;
875 };
876 
877 struct pqi_config_table_heartbeat {
878 	struct pqi_config_table_section_header header;
879 	__le32	heartbeat_counter;
880 };
881 
882 struct pqi_config_table_soft_reset {
883 	struct pqi_config_table_section_header header;
884 	u8 soft_reset_status;
885 };
886 
887 #define PQI_SOFT_RESET_INITIATE		0x1
888 #define PQI_SOFT_RESET_ABORT		0x2
889 
890 enum pqi_soft_reset_status {
891 	RESET_INITIATE_FIRMWARE,
892 	RESET_INITIATE_DRIVER,
893 	RESET_ABORT,
894 	RESET_NORESPONSE,
895 	RESET_TIMEDOUT
896 };
897 
898 union pqi_reset_register {
899 	struct {
900 		u32	reset_type : 3;
901 		u32	reserved : 2;
902 		u32	reset_action : 3;
903 		u32	hold_in_pd1 : 1;
904 		u32	reserved2 : 23;
905 	} bits;
906 	u32	all_bits;
907 };
908 
909 #define PQI_RESET_ACTION_RESET		0x1
910 
911 #define PQI_RESET_TYPE_NO_RESET		0x0
912 #define PQI_RESET_TYPE_SOFT_RESET	0x1
913 #define PQI_RESET_TYPE_FIRM_RESET	0x2
914 #define PQI_RESET_TYPE_HARD_RESET	0x3
915 
916 #define PQI_RESET_ACTION_COMPLETED	0x2
917 
918 #define PQI_RESET_POLL_INTERVAL_MSECS	100
919 
920 #define PQI_MAX_OUTSTANDING_REQUESTS		((u32)~0)
921 #define PQI_MAX_OUTSTANDING_REQUESTS_KDUMP	32
922 #define PQI_MAX_TRANSFER_SIZE			(1024U * 1024U)
923 #define PQI_MAX_TRANSFER_SIZE_KDUMP		(512 * 1024U)
924 
925 #define RAID_MAP_MAX_ENTRIES			1024
926 #define RAID_MAP_MAX_DATA_DISKS_PER_ROW		128
927 
928 #define PQI_PHYSICAL_DEVICE_BUS		0
929 #define PQI_RAID_VOLUME_BUS		1
930 #define PQI_HBA_BUS			2
931 #define PQI_EXTERNAL_RAID_VOLUME_BUS	3
932 #define PQI_MAX_BUS			PQI_EXTERNAL_RAID_VOLUME_BUS
933 #define PQI_VSEP_CISS_BTL		379
934 
935 struct report_lun_header {
936 	__be32	list_length;
937 	u8	flags;
938 	u8	reserved[3];
939 };
940 
941 /* for flags field of struct report_lun_header */
942 #define CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID	(1 << 0)
943 #define CISS_REPORT_LOG_FLAG_QUEUE_DEPTH	(1 << 5)
944 #define CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX	(1 << 6)
945 
946 #define CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_2		0x2
947 #define CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_4		0x4
948 #define CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_MASK	0xf
949 
950 struct report_log_lun {
951 	u8	lunid[8];
952 	u8	volume_id[16];
953 };
954 
955 struct report_log_lun_list {
956 	struct report_lun_header header;
957 	struct report_log_lun lun_entries[];
958 };
959 
960 struct report_phys_lun_8byte_wwid {
961 	u8	lunid[8];
962 	__be64	wwid;
963 	u8	device_type;
964 	u8	device_flags;
965 	u8	lun_count;	/* number of LUNs in a multi-LUN device */
966 	u8	redundant_paths;
967 	u32	aio_handle;
968 };
969 
970 struct report_phys_lun_16byte_wwid {
971 	u8	lunid[8];
972 	u8	wwid[16];
973 	u8	device_type;
974 	u8	device_flags;
975 	u8	lun_count;	/* number of LUNs in a multi-LUN device */
976 	u8	redundant_paths;
977 	u32	aio_handle;
978 };
979 
980 /* for device_flags field of struct report_phys_lun_extended_entry */
981 #define CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED	0x8
982 
983 struct report_phys_lun_8byte_wwid_list {
984 	struct report_lun_header header;
985 	struct report_phys_lun_8byte_wwid lun_entries[];
986 };
987 
988 struct report_phys_lun_16byte_wwid_list {
989 	struct report_lun_header header;
990 	struct report_phys_lun_16byte_wwid lun_entries[];
991 };
992 
993 struct raid_map_disk_data {
994 	u32	aio_handle;
995 	u8	xor_mult[2];
996 	u8	reserved[2];
997 };
998 
999 /* for flags field of RAID map */
1000 #define RAID_MAP_ENCRYPTION_ENABLED	0x1
1001 
1002 struct raid_map {
1003 	__le32	structure_size;		/* size of entire structure in bytes */
1004 	__le32	volume_blk_size;	/* bytes / block in the volume */
1005 	__le64	volume_blk_cnt;		/* logical blocks on the volume */
1006 	u8	phys_blk_shift;		/* shift factor to convert between */
1007 					/* units of logical blocks and */
1008 					/* physical disk blocks */
1009 	u8	parity_rotation_shift;	/* shift factor to convert between */
1010 					/* units of logical stripes and */
1011 					/* physical stripes */
1012 	__le16	strip_size;		/* blocks used on each disk / stripe */
1013 	__le64	disk_starting_blk;	/* first disk block used in volume */
1014 	__le64	disk_blk_cnt;		/* disk blocks used by volume / disk */
1015 	__le16	data_disks_per_row;	/* data disk entries / row in the map */
1016 	__le16	metadata_disks_per_row;	/* mirror/parity disk entries / row */
1017 					/* in the map */
1018 	__le16	row_cnt;		/* rows in each layout map */
1019 	__le16	layout_map_count;	/* layout maps (1 map per */
1020 					/* mirror parity group) */
1021 	__le16	flags;
1022 	__le16	data_encryption_key_index;
1023 	u8	reserved[16];
1024 	struct raid_map_disk_data disk_data[RAID_MAP_MAX_ENTRIES];
1025 };
1026 
1027 #pragma pack()
1028 
1029 struct pqi_scsi_dev_raid_map_data {
1030 	bool	is_write;
1031 	u8	raid_level;
1032 	u32	map_index;
1033 	u64	first_block;
1034 	u64	last_block;
1035 	u32	data_length;
1036 	u32	block_cnt;
1037 	u32	blocks_per_row;
1038 	u64	first_row;
1039 	u64	last_row;
1040 	u32	first_row_offset;
1041 	u32	last_row_offset;
1042 	u32	first_column;
1043 	u32	last_column;
1044 	u64	r5or6_first_row;
1045 	u64	r5or6_last_row;
1046 	u32	r5or6_first_row_offset;
1047 	u32	r5or6_last_row_offset;
1048 	u32	r5or6_first_column;
1049 	u32	r5or6_last_column;
1050 	u16	data_disks_per_row;
1051 	u32	total_disks_per_row;
1052 	u16	layout_map_count;
1053 	u32	stripesize;
1054 	u16	strip_size;
1055 	u32	first_group;
1056 	u32	last_group;
1057 	u32	map_row;
1058 	u32	aio_handle;
1059 	u64	disk_block;
1060 	u32	disk_block_cnt;
1061 	u8	cdb[16];
1062 	u8	cdb_length;
1063 
1064 	/* RAID 1 specific */
1065 #define NUM_RAID1_MAP_ENTRIES	3
1066 	u32	num_it_nexus_entries;
1067 	u32	it_nexus[NUM_RAID1_MAP_ENTRIES];
1068 
1069 	/* RAID 5 / RAID 6 specific */
1070 	u32	p_parity_it_nexus;	/* aio_handle */
1071 	u32	q_parity_it_nexus;	/* aio_handle */
1072 	u8	xor_mult;
1073 	u64	row;
1074 	u64	stripe_lba;
1075 	u32	p_index;
1076 	u32	q_index;
1077 };
1078 
1079 #define RAID_CTLR_LUNID		"\0\0\0\0\0\0\0\0"
1080 
1081 #define NUM_STREAMS_PER_LUN	8
1082 
1083 struct pqi_stream_data {
1084 	u64	next_lba;
1085 	u32	last_accessed;
1086 };
1087 
1088 #define PQI_MAX_LUNS_PER_DEVICE         256
1089 
1090 struct pqi_scsi_dev {
1091 	int	devtype;		/* as reported by INQUIRY command */
1092 	u8	device_type;		/* as reported by */
1093 					/* BMIC_IDENTIFY_PHYSICAL_DEVICE */
1094 					/* only valid for devtype = TYPE_DISK */
1095 	int	bus;
1096 	int	target;
1097 	int	lun;
1098 	u8	scsi3addr[8];
1099 	u8	wwid[16];
1100 	u8	volume_id[16];
1101 	u8	is_physical_device : 1;
1102 	u8	is_external_raid_device : 1;
1103 	u8	is_expander_smp_device : 1;
1104 	u8	target_lun_valid : 1;
1105 	u8	device_gone : 1;
1106 	u8	new_device : 1;
1107 	u8	keep_device : 1;
1108 	u8	volume_offline : 1;
1109 	u8	rescan : 1;
1110 	u8	ignore_device : 1;
1111 	u8	erase_in_progress : 1;
1112 	bool	aio_enabled;		/* only valid for physical disks */
1113 	bool	in_remove;
1114 	bool	device_offline;
1115 	u8	vendor[8];		/* bytes 8-15 of inquiry data */
1116 	u8	model[16];		/* bytes 16-31 of inquiry data */
1117 	u64	sas_address;
1118 	u8	raid_level;
1119 	u16	queue_depth;		/* max. queue_depth for this device */
1120 	u16	advertised_queue_depth;
1121 	u32	aio_handle;
1122 	u8	volume_status;
1123 	u8	active_path_index;
1124 	u8	path_map;
1125 	u8	bay;
1126 	u8	box_index;
1127 	u8	phys_box_on_bus;
1128 	u8	phy_connected_dev_type;
1129 	u8	box[8];
1130 	u16	phys_connector[8];
1131 	u8	phy_id;
1132 	u8	ncq_prio_enable;
1133 	u8	ncq_prio_support;
1134 	u8	lun_count;
1135 	bool	raid_bypass_configured;	/* RAID bypass configured */
1136 	bool	raid_bypass_enabled;	/* RAID bypass enabled */
1137 	u32	next_bypass_group[RAID_MAP_MAX_DATA_DISKS_PER_ROW];
1138 	struct raid_map *raid_map;	/* RAID bypass map */
1139 	u32	max_transfer_encrypted;
1140 
1141 	struct pqi_sas_port *sas_port;
1142 	struct scsi_device *sdev;
1143 
1144 	struct list_head scsi_device_list_entry;
1145 	struct list_head new_device_list_entry;
1146 	struct list_head add_list_entry;
1147 	struct list_head delete_list_entry;
1148 
1149 	struct pqi_stream_data stream_data[NUM_STREAMS_PER_LUN];
1150 	atomic_t scsi_cmds_outstanding[PQI_MAX_LUNS_PER_DEVICE];
1151 	unsigned int raid_bypass_cnt;
1152 };
1153 
1154 /* VPD inquiry pages */
1155 #define CISS_VPD_LV_DEVICE_GEOMETRY	0xc1	/* vendor-specific page */
1156 #define CISS_VPD_LV_BYPASS_STATUS	0xc2	/* vendor-specific page */
1157 #define CISS_VPD_LV_STATUS		0xc3	/* vendor-specific page */
1158 
1159 #define VPD_PAGE	(1 << 8)
1160 
1161 #pragma pack(1)
1162 
1163 /* structure for CISS_VPD_LV_STATUS */
1164 struct ciss_vpd_logical_volume_status {
1165 	u8	peripheral_info;
1166 	u8	page_code;
1167 	u8	reserved;
1168 	u8	page_length;
1169 	u8	volume_status;
1170 	u8	reserved2[3];
1171 	__be32	flags;
1172 };
1173 
1174 #pragma pack()
1175 
1176 /* constants for volume_status field of ciss_vpd_logical_volume_status */
1177 #define CISS_LV_OK					0
1178 #define CISS_LV_FAILED					1
1179 #define CISS_LV_NOT_CONFIGURED				2
1180 #define CISS_LV_DEGRADED				3
1181 #define CISS_LV_READY_FOR_RECOVERY			4
1182 #define CISS_LV_UNDERGOING_RECOVERY			5
1183 #define CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED		6
1184 #define CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM	7
1185 #define CISS_LV_HARDWARE_OVERHEATING			8
1186 #define CISS_LV_HARDWARE_HAS_OVERHEATED			9
1187 #define CISS_LV_UNDERGOING_EXPANSION			10
1188 #define CISS_LV_NOT_AVAILABLE				11
1189 #define CISS_LV_QUEUED_FOR_EXPANSION			12
1190 #define CISS_LV_DISABLED_SCSI_ID_CONFLICT		13
1191 #define CISS_LV_EJECTED					14
1192 #define CISS_LV_UNDERGOING_ERASE			15
1193 /* state 16 not used */
1194 #define CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD	17
1195 #define CISS_LV_UNDERGOING_RPI				18
1196 #define CISS_LV_PENDING_RPI				19
1197 #define CISS_LV_ENCRYPTED_NO_KEY			20
1198 /* state 21 not used */
1199 #define CISS_LV_UNDERGOING_ENCRYPTION			22
1200 #define CISS_LV_UNDERGOING_ENCRYPTION_REKEYING		23
1201 #define CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER	24
1202 #define CISS_LV_PENDING_ENCRYPTION			25
1203 #define CISS_LV_PENDING_ENCRYPTION_REKEYING		26
1204 #define CISS_LV_NOT_SUPPORTED				27
1205 #define CISS_LV_STATUS_UNAVAILABLE			255
1206 
1207 /* constants for flags field of ciss_vpd_logical_volume_status */
1208 #define CISS_LV_FLAGS_NO_HOST_IO	0x1	/* volume not available for */
1209 						/* host I/O */
1210 
1211 /* for SAS hosts and SAS expanders */
1212 struct pqi_sas_node {
1213 	struct device *parent_dev;
1214 	struct list_head port_list_head;
1215 };
1216 
1217 struct pqi_sas_port {
1218 	struct list_head port_list_entry;
1219 	u64	sas_address;
1220 	struct pqi_scsi_dev *device;
1221 	struct sas_port *port;
1222 	int	next_phy_index;
1223 	struct list_head phy_list_head;
1224 	struct pqi_sas_node *parent_node;
1225 	struct sas_rphy *rphy;
1226 };
1227 
1228 struct pqi_sas_phy {
1229 	struct list_head phy_list_entry;
1230 	struct sas_phy *phy;
1231 	struct pqi_sas_port *parent_port;
1232 	bool	added_to_port;
1233 };
1234 
1235 struct pqi_io_request {
1236 	atomic_t	refcount;
1237 	u16		index;
1238 	void (*io_complete_callback)(struct pqi_io_request *io_request,
1239 		void *context);
1240 	void		*context;
1241 	u8		raid_bypass : 1;
1242 	int		status;
1243 	struct pqi_queue_group *queue_group;
1244 	struct scsi_cmnd *scmd;
1245 	void		*error_info;
1246 	struct pqi_sg_descriptor *sg_chain_buffer;
1247 	dma_addr_t	sg_chain_buffer_dma_handle;
1248 	void		*iu;
1249 	struct list_head request_list_entry;
1250 };
1251 
1252 #define PQI_NUM_SUPPORTED_EVENTS	7
1253 
1254 struct pqi_event {
1255 	bool	pending;
1256 	u8	event_type;
1257 	u16	event_id;
1258 	u32	additional_event_id;
1259 };
1260 
1261 #define PQI_RESERVED_IO_SLOTS_LUN_RESET			1
1262 #define PQI_RESERVED_IO_SLOTS_EVENT_ACK			PQI_NUM_SUPPORTED_EVENTS
1263 #define PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS	3
1264 #define PQI_RESERVED_IO_SLOTS				\
1265 	(PQI_RESERVED_IO_SLOTS_LUN_RESET + PQI_RESERVED_IO_SLOTS_EVENT_ACK + \
1266 	PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS)
1267 
1268 #define PQI_CTRL_PRODUCT_ID_GEN1	0
1269 #define PQI_CTRL_PRODUCT_ID_GEN2	7
1270 #define PQI_CTRL_PRODUCT_REVISION_A	0
1271 #define PQI_CTRL_PRODUCT_REVISION_B	1
1272 
1273 enum pqi_ctrl_removal_state {
1274 	PQI_CTRL_PRESENT = 0,
1275 	PQI_CTRL_GRACEFUL_REMOVAL,
1276 	PQI_CTRL_SURPRISE_REMOVAL
1277 };
1278 
1279 struct pqi_ctrl_info {
1280 	unsigned int	ctrl_id;
1281 	struct pci_dev	*pci_dev;
1282 	char		firmware_version[32];
1283 	char		serial_number[17];
1284 	char		model[17];
1285 	char		vendor[9];
1286 	u8		product_id;
1287 	u8		product_revision;
1288 	void __iomem	*iomem_base;
1289 	struct pqi_ctrl_registers __iomem *registers;
1290 	struct pqi_device_registers __iomem *pqi_registers;
1291 	u32		max_sg_entries;
1292 	u32		config_table_offset;
1293 	u32		config_table_length;
1294 	u16		max_inbound_queues;
1295 	u16		max_elements_per_iq;
1296 	u16		max_iq_element_length;
1297 	u16		max_outbound_queues;
1298 	u16		max_elements_per_oq;
1299 	u16		max_oq_element_length;
1300 	u32		max_transfer_size;
1301 	u32		max_outstanding_requests;
1302 	u32		max_io_slots;
1303 	unsigned int	scsi_ml_can_queue;
1304 	unsigned short	sg_tablesize;
1305 	unsigned int	max_sectors;
1306 	u32		error_buffer_length;
1307 	void		*error_buffer;
1308 	dma_addr_t	error_buffer_dma_handle;
1309 	size_t		sg_chain_buffer_length;
1310 	unsigned int	num_queue_groups;
1311 	u16		num_elements_per_iq;
1312 	u16		num_elements_per_oq;
1313 	u16		max_inbound_iu_length_per_firmware;
1314 	u16		max_inbound_iu_length;
1315 	unsigned int	max_sg_per_iu;
1316 	unsigned int	max_sg_per_r56_iu;
1317 	void		*admin_queue_memory_base;
1318 	u32		admin_queue_memory_length;
1319 	dma_addr_t	admin_queue_memory_base_dma_handle;
1320 	void		*queue_memory_base;
1321 	u32		queue_memory_length;
1322 	dma_addr_t	queue_memory_base_dma_handle;
1323 	struct pqi_admin_queues admin_queues;
1324 	struct pqi_queue_group queue_groups[PQI_MAX_QUEUE_GROUPS];
1325 	struct pqi_event_queue event_queue;
1326 	enum pqi_irq_mode irq_mode;
1327 	int		max_msix_vectors;
1328 	int		num_msix_vectors_enabled;
1329 	int		num_msix_vectors_initialized;
1330 	int		event_irq;
1331 	struct Scsi_Host *scsi_host;
1332 
1333 	struct mutex	scan_mutex;
1334 	struct mutex	lun_reset_mutex;
1335 	bool		controller_online;
1336 	bool		block_requests;
1337 	bool		scan_blocked;
1338 	u8		logical_volume_rescan_needed : 1;
1339 	u8		inbound_spanning_supported : 1;
1340 	u8		outbound_spanning_supported : 1;
1341 	u8		pqi_mode_enabled : 1;
1342 	u8		pqi_reset_quiesce_supported : 1;
1343 	u8		soft_reset_handshake_supported : 1;
1344 	u8		raid_iu_timeout_supported : 1;
1345 	u8		tmf_iu_timeout_supported : 1;
1346 	u8		firmware_triage_supported : 1;
1347 	u8		rpl_extended_format_4_5_supported : 1;
1348 	u8		multi_lun_device_supported : 1;
1349 	u8		enable_r1_writes : 1;
1350 	u8		enable_r5_writes : 1;
1351 	u8		enable_r6_writes : 1;
1352 	u8		lv_drive_type_mix_valid : 1;
1353 	u8		enable_stream_detection : 1;
1354 	u8		disable_managed_interrupts : 1;
1355 	u8		ciss_report_log_flags;
1356 	u32		max_transfer_encrypted_sas_sata;
1357 	u32		max_transfer_encrypted_nvme;
1358 	u32		max_write_raid_5_6;
1359 	u32		max_write_raid_1_10_2drive;
1360 	u32		max_write_raid_1_10_3drive;
1361 	int		numa_node;
1362 
1363 	struct list_head scsi_device_list;
1364 	spinlock_t	scsi_device_list_lock;
1365 
1366 	struct delayed_work rescan_work;
1367 	struct delayed_work update_time_work;
1368 
1369 	struct pqi_sas_node *sas_host;
1370 	u64		sas_address;
1371 
1372 	struct pqi_io_request *io_request_pool;
1373 	struct pqi_event events[PQI_NUM_SUPPORTED_EVENTS];
1374 	struct work_struct event_work;
1375 
1376 	atomic_t	num_interrupts;
1377 	int		previous_num_interrupts;
1378 	u32		previous_heartbeat_count;
1379 	__le32 __iomem	*heartbeat_counter;
1380 	u8 __iomem	*soft_reset_status;
1381 	struct timer_list heartbeat_timer;
1382 	struct work_struct ctrl_offline_work;
1383 
1384 	struct semaphore sync_request_sem;
1385 	atomic_t	num_busy_threads;
1386 	atomic_t	num_blocked_threads;
1387 	wait_queue_head_t block_requests_wait;
1388 
1389 	struct mutex	ofa_mutex;
1390 	struct pqi_ofa_memory *pqi_ofa_mem_virt_addr;
1391 	dma_addr_t	pqi_ofa_mem_dma_handle;
1392 	void		**pqi_ofa_chunk_virt_addr;
1393 	struct work_struct ofa_memory_alloc_work;
1394 	struct work_struct ofa_quiesce_work;
1395 	u32		ofa_bytes_requested;
1396 	u16		ofa_cancel_reason;
1397 	enum pqi_ctrl_removal_state ctrl_removal_state;
1398 };
1399 
1400 enum pqi_ctrl_mode {
1401 	SIS_MODE = 0,
1402 	PQI_MODE
1403 };
1404 
1405 /*
1406  * assume worst case: SATA queue depth of 31 minus 4 internal firmware commands
1407  */
1408 #define PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH	27
1409 
1410 /* CISS commands */
1411 #define CISS_READ		0xc0
1412 #define CISS_REPORT_LOG		0xc2	/* Report Logical LUNs */
1413 #define CISS_REPORT_PHYS	0xc3	/* Report Physical LUNs */
1414 #define CISS_GET_RAID_MAP	0xc8
1415 
1416 /* BMIC commands */
1417 #define BMIC_IDENTIFY_CONTROLLER		0x11
1418 #define BMIC_IDENTIFY_PHYSICAL_DEVICE		0x15
1419 #define BMIC_READ				0x26
1420 #define BMIC_WRITE				0x27
1421 #define BMIC_SENSE_FEATURE			0x61
1422 #define BMIC_SENSE_CONTROLLER_PARAMETERS	0x64
1423 #define BMIC_SENSE_SUBSYSTEM_INFORMATION	0x66
1424 #define BMIC_CSMI_PASSTHRU			0x68
1425 #define BMIC_WRITE_HOST_WELLNESS		0xa5
1426 #define BMIC_FLUSH_CACHE			0xc2
1427 #define BMIC_SET_DIAG_OPTIONS			0xf4
1428 #define BMIC_SENSE_DIAG_OPTIONS			0xf5
1429 
1430 #define CSMI_CC_SAS_SMP_PASSTHRU		0x17
1431 
1432 #define SA_FLUSH_CACHE				0x1
1433 
1434 #define MASKED_DEVICE(lunid)			((lunid)[3] & 0xc0)
1435 #define CISS_GET_LEVEL_2_BUS(lunid)		((lunid)[7] & 0x3f)
1436 #define CISS_GET_LEVEL_2_TARGET(lunid)		((lunid)[6])
1437 #define CISS_GET_DRIVE_NUMBER(lunid)		\
1438 	(((CISS_GET_LEVEL_2_BUS((lunid)) - 1) << 8) + \
1439 	CISS_GET_LEVEL_2_TARGET((lunid)))
1440 
1441 #define LV_GET_DRIVE_TYPE_MIX(lunid)		((lunid)[6])
1442 
1443 #define LV_DRIVE_TYPE_MIX_UNKNOWN		0
1444 #define LV_DRIVE_TYPE_MIX_NO_RESTRICTION	1
1445 #define LV_DRIVE_TYPE_MIX_SAS_HDD_ONLY		2
1446 #define LV_DRIVE_TYPE_MIX_SATA_HDD_ONLY		3
1447 #define LV_DRIVE_TYPE_MIX_SAS_OR_SATA_SSD_ONLY	4
1448 #define LV_DRIVE_TYPE_MIX_SAS_SSD_ONLY		5
1449 #define LV_DRIVE_TYPE_MIX_SATA_SSD_ONLY		6
1450 #define LV_DRIVE_TYPE_MIX_SAS_ONLY		7
1451 #define LV_DRIVE_TYPE_MIX_SATA_ONLY		8
1452 #define LV_DRIVE_TYPE_MIX_NVME_ONLY		9
1453 
1454 #define NO_TIMEOUT		((unsigned long) -1)
1455 
1456 #pragma pack(1)
1457 
1458 struct bmic_identify_controller {
1459 	u8	configured_logical_drive_count;
1460 	__le32	configuration_signature;
1461 	u8	firmware_version_short[4];
1462 	u8	reserved[145];
1463 	__le16	extended_logical_unit_count;
1464 	u8	reserved1[34];
1465 	__le16	firmware_build_number;
1466 	u8	reserved2[8];
1467 	u8	vendor_id[8];
1468 	u8	product_id[16];
1469 	u8	reserved3[62];
1470 	__le32	extra_controller_flags;
1471 	u8	reserved4[2];
1472 	u8	controller_mode;
1473 	u8	spare_part_number[32];
1474 	u8	firmware_version_long[32];
1475 };
1476 
1477 /* constants for extra_controller_flags field of bmic_identify_controller */
1478 #define BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED	0x20000000
1479 
1480 struct bmic_sense_subsystem_info {
1481 	u8	reserved[44];
1482 	u8	ctrl_serial_number[16];
1483 };
1484 
1485 /* constants for device_type field */
1486 #define SA_DEVICE_TYPE_SATA		0x1
1487 #define SA_DEVICE_TYPE_SAS		0x2
1488 #define SA_DEVICE_TYPE_EXPANDER_SMP	0x5
1489 #define SA_DEVICE_TYPE_SES		0x6
1490 #define SA_DEVICE_TYPE_CONTROLLER	0x7
1491 #define SA_DEVICE_TYPE_NVME		0x9
1492 
1493 struct bmic_identify_physical_device {
1494 	u8	scsi_bus;		/* SCSI Bus number on controller */
1495 	u8	scsi_id;		/* SCSI ID on this bus */
1496 	__le16	block_size;		/* sector size in bytes */
1497 	__le32	total_blocks;		/* number for sectors on drive */
1498 	__le32	reserved_blocks;	/* controller reserved (RIS) */
1499 	u8	model[40];		/* Physical Drive Model */
1500 	u8	serial_number[40];	/* Drive Serial Number */
1501 	u8	firmware_revision[8];	/* drive firmware revision */
1502 	u8	scsi_inquiry_bits;	/* inquiry byte 7 bits */
1503 	u8	compaq_drive_stamp;	/* 0 means drive not stamped */
1504 	u8	last_failure_reason;
1505 	u8	flags;
1506 	u8	more_flags;
1507 	u8	scsi_lun;		/* SCSI LUN for phys drive */
1508 	u8	yet_more_flags;
1509 	u8	even_more_flags;
1510 	__le32	spi_speed_rules;
1511 	u8	phys_connector[2];	/* connector number on controller */
1512 	u8	phys_box_on_bus;	/* phys enclosure this drive resides */
1513 	u8	phys_bay_in_box;	/* phys drv bay this drive resides */
1514 	__le32	rpm;			/* drive rotational speed in RPM */
1515 	u8	device_type;		/* type of drive */
1516 	u8	sata_version;		/* only valid when device_type = */
1517 					/* SA_DEVICE_TYPE_SATA */
1518 	__le64	big_total_block_count;
1519 	__le64	ris_starting_lba;
1520 	__le32	ris_size;
1521 	u8	wwid[20];
1522 	u8	controller_phy_map[32];
1523 	__le16	phy_count;
1524 	u8	phy_connected_dev_type[256];
1525 	u8	phy_to_drive_bay_num[256];
1526 	__le16	phy_to_attached_dev_index[256];
1527 	u8	box_index;
1528 	u8	reserved;
1529 	__le16	extra_physical_drive_flags;
1530 	u8	negotiated_link_rate[256];
1531 	u8	phy_to_phy_map[256];
1532 	u8	redundant_path_present_map;
1533 	u8	redundant_path_failure_map;
1534 	u8	active_path_number;
1535 	__le16	alternate_paths_phys_connector[8];
1536 	u8	alternate_paths_phys_box_on_port[8];
1537 	u8	multi_lun_device_lun_count;
1538 	u8	minimum_good_fw_revision[8];
1539 	u8	unique_inquiry_bytes[20];
1540 	u8	current_temperature_degrees;
1541 	u8	temperature_threshold_degrees;
1542 	u8	max_temperature_degrees;
1543 	u8	logical_blocks_per_phys_block_exp;
1544 	__le16	current_queue_depth_limit;
1545 	u8	switch_name[10];
1546 	__le16	switch_port;
1547 	u8	alternate_paths_switch_name[40];
1548 	u8	alternate_paths_switch_port[8];
1549 	__le16	power_on_hours;
1550 	__le16	percent_endurance_used;
1551 	u8	drive_authentication;
1552 	u8	smart_carrier_authentication;
1553 	u8	smart_carrier_app_fw_version;
1554 	u8	smart_carrier_bootloader_fw_version;
1555 	u8	sanitize_flags;
1556 	u8	encryption_key_flags;
1557 	u8	encryption_key_name[64];
1558 	__le32	misc_drive_flags;
1559 	__le16	dek_index;
1560 	__le16	hba_drive_encryption_flags;
1561 	__le16	max_overwrite_time;
1562 	__le16	max_block_erase_time;
1563 	__le16	max_crypto_erase_time;
1564 	u8	connector_info[5];
1565 	u8	connector_name[8][8];
1566 	u8	page_83_identifier[16];
1567 	u8	maximum_link_rate[256];
1568 	u8	negotiated_physical_link_rate[256];
1569 	u8	box_connector_name[8];
1570 	u8	padding_to_multiple_of_512[9];
1571 };
1572 
1573 #define BMIC_SENSE_FEATURE_IO_PAGE		0x8
1574 #define BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE	0x2
1575 
1576 struct bmic_sense_feature_buffer_header {
1577 	u8	page_code;
1578 	u8	subpage_code;
1579 	__le16	buffer_length;
1580 };
1581 
1582 struct bmic_sense_feature_page_header {
1583 	u8	page_code;
1584 	u8	subpage_code;
1585 	__le16	page_length;
1586 };
1587 
1588 struct bmic_sense_feature_io_page_aio_subpage {
1589 	struct bmic_sense_feature_page_header header;
1590 	u8	firmware_read_support;
1591 	u8	driver_read_support;
1592 	u8	firmware_write_support;
1593 	u8	driver_write_support;
1594 	__le16	max_transfer_encrypted_sas_sata;
1595 	__le16	max_transfer_encrypted_nvme;
1596 	__le16	max_write_raid_5_6;
1597 	__le16	max_write_raid_1_10_2drive;
1598 	__le16	max_write_raid_1_10_3drive;
1599 };
1600 
1601 struct bmic_smp_request {
1602 	u8	frame_type;
1603 	u8	function;
1604 	u8	allocated_response_length;
1605 	u8	request_length;
1606 	u8	additional_request_bytes[1016];
1607 };
1608 
1609 struct  bmic_smp_response {
1610 	u8	frame_type;
1611 	u8	function;
1612 	u8	function_result;
1613 	u8	response_length;
1614 	u8	additional_response_bytes[1016];
1615 };
1616 
1617 struct bmic_csmi_ioctl_header {
1618 	__le32	header_length;
1619 	u8	signature[8];
1620 	__le32	timeout;
1621 	__le32	control_code;
1622 	__le32	return_code;
1623 	__le32	length;
1624 };
1625 
1626 struct bmic_csmi_smp_passthru {
1627 	u8	phy_identifier;
1628 	u8	port_identifier;
1629 	u8	connection_rate;
1630 	u8	reserved;
1631 	__be64	destination_sas_address;
1632 	__le32	request_length;
1633 	struct bmic_smp_request request;
1634 	u8	connection_status;
1635 	u8	reserved1[3];
1636 	__le32	response_length;
1637 	struct bmic_smp_response response;
1638 };
1639 
1640 struct bmic_csmi_smp_passthru_buffer {
1641 	struct bmic_csmi_ioctl_header ioctl_header;
1642 	struct bmic_csmi_smp_passthru parameters;
1643 };
1644 
1645 struct bmic_flush_cache {
1646 	u8	disable_flag;
1647 	u8	system_power_action;
1648 	u8	ndu_flush;
1649 	u8	shutdown_event;
1650 	u8	reserved[28];
1651 };
1652 
1653 /* for shutdown_event member of struct bmic_flush_cache */
1654 enum bmic_flush_cache_shutdown_event {
1655 	NONE_CACHE_FLUSH_ONLY = 0,
1656 	SHUTDOWN = 1,
1657 	HIBERNATE = 2,
1658 	SUSPEND = 3,
1659 	RESTART = 4
1660 };
1661 
1662 struct bmic_diag_options {
1663 	__le32 options;
1664 };
1665 
1666 #pragma pack()
1667 
1668 static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost)
1669 {
1670 	void *hostdata = shost_priv(shost);
1671 
1672 	return *((struct pqi_ctrl_info **)hostdata);
1673 }
1674 
1675 void pqi_sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
1676 	struct sas_rphy *rphy);
1677 
1678 int pqi_add_sas_host(struct Scsi_Host *shost, struct pqi_ctrl_info *ctrl_info);
1679 void pqi_delete_sas_host(struct pqi_ctrl_info *ctrl_info);
1680 int pqi_add_sas_device(struct pqi_sas_node *pqi_sas_node,
1681 	struct pqi_scsi_dev *device);
1682 void pqi_remove_sas_device(struct pqi_scsi_dev *device);
1683 struct pqi_scsi_dev *pqi_find_device_by_sas_rphy(
1684 	struct pqi_ctrl_info *ctrl_info, struct sas_rphy *rphy);
1685 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd);
1686 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
1687 	struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
1688 	struct pqi_raid_error_info *error_info);
1689 
1690 extern struct sas_function_template pqi_sas_transport_functions;
1691 
1692 #endif /* _SMARTPQI_H */
1693