xref: /freebsd/sys/dev/ocs_fc/ocs_fcp.h (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1 /*-
2  * Copyright (c) 2017 Broadcom. All rights reserved.
3  * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  *    this list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  *    this list of conditions and the following disclaimer in the documentation
13  *    and/or other materials provided with the distribution.
14  *
15  * 3. Neither the name of the copyright holder nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 /**
33  * @file
34  * Define Fibre Channel types and structures.
35  */
36 
37 #ifndef _OCS_FCP_H
38 #define _OCS_FCP_H
39 
40 #define FC_ELS_CMD_RJT		0x01
41 #define FC_ELS_CMD_ACC		0x02
42 #define FC_ELS_CMD_PLOGI	0x03
43 #define FC_ELS_CMD_FLOGI	0x04
44 #define FC_ELS_CMD_LOGO		0x05
45 #define FC_ELS_CMD_RRQ		0x12
46 #define FC_ELS_CMD_PRLI		0x20
47 #define FC_ELS_CMD_PRLO		0x21
48 #define FC_ELS_CMD_PDISC	0x50
49 #define FC_ELS_CMD_FDISC	0x51
50 #define FC_ELS_CMD_ADISC	0x52
51 #define FC_ELS_CMD_RSCN		0x61
52 #define FC_ELS_CMD_SCR		0x62
53 
54 #define FC_TYPE_BASIC_LINK	0
55 #define FC_TYPE_FCP		0x08
56 #define FC_TYPE_GS		0x20
57 #define FC_TYPE_SW		0x22
58 
59 #define FC_ADDR_FABRIC			0xfffffe	/** well known fabric address */
60 #define FC_ADDR_CONTROLLER              0xfffffd        /** well known fabric controller address */
61 #define FC_ADDR_IS_DOMAIN_CTRL(x)	(((x) & 0xffff00) == 0xfffc00)	/** is well known domain controller */
62 #define FC_ADDR_GET_DOMAIN_CTRL(x)	((x) & 0x0000ff)	/** get domain controller number */
63 #define FC_ADDR_NAMESERVER              0xfffffc        /** well known directory server address */
64 
65 #define FC_GS_TYPE_ALIAS_SERVICE		0xf8
66 #define FC_GS_TYPE_MANAGEMENT_SERVICE		0xfa
67 #define FC_GS_TYPE_DIRECTORY_SERVICE		0xfc
68 
69 #define FC_GS_SUBTYPE_NAME_SERVER		0x02
70 
71 /**
72  * Generic Services FC Type Bit mask macros:
73  */
74 #define FC_GS_TYPE_WORD(type)	((type) >> 5)
75 #define FC_GS_TYPE_BIT(type)	((type) & 0x1f)
76 
77 /**
78  * Generic Services Name Server Request Command codes:
79  */
80 #define FC_GS_NAMESERVER_GPN_ID		0x0112
81 #define FC_GS_NAMESERVER_GNN_ID		0x0113
82 #define FC_GS_NAMESERVER_GFPN_ID	0x011c
83 #define FC_GS_NAMESERVER_GFF_ID		0x011f
84 #define FC_GS_NAMESERVER_GID_FT		0x0171
85 #define FC_GS_NAMESERVER_GID_PT		0x01a1
86 #define FC_GS_NAMESERVER_RHBA		0x0200
87 #define FC_GS_NAMESERVER_RPA		0x0211
88 #define FC_GS_NAMESERVER_RPN_ID		0x0212
89 #define FC_GS_NAMESERVER_RNN_ID		0x0213
90 #define FC_GS_NAMESERVER_RCS_ID		0x0214
91 #define FC_GS_NAMESERVER_RFT_ID		0x0217
92 #define FC_GS_NAMESERVER_RFF_ID		0x021f
93 #define FC_GS_NAMESERVER_RSNN_NN	0x0239
94 #define FC_GS_NAMESERVER_RSPN_ID	0x0218
95 
96 #define FC_GS_REVISION		0x03
97 
98 #define FC_GS_IO_PARAMS		{ .fc_ct.r_ctl = 0x02, \
99 				.fc_ct.type = FC_TYPE_GS, \
100 				.fc_ct.df_ctl = 0x00 }
101 
102 typedef struct fc_vft_header_s {
103 	uint32_t	:1,
104 			vf_id:12,
105 			priority:3,
106 			e:1,
107 			:1,
108 			type:4,
109 			ver:2,
110 			r_ctl:8;
111 	uint32_t	:24,
112 			hopct:8;
113 } fc_vft_header_t;
114 
115 #if BYTE_ORDER == LITTLE_ENDIAN
116 static inline uint32_t fc_be24toh(uint32_t x) { return (ocs_be32toh(x) >> 8); }
117 #else
118 static inline uint32_t fc_be24toh(uint32_t x) { }
119 #endif
120 static inline uint32_t fc_htobe24(uint32_t x) { return fc_be24toh(x); }
121 
122 #define FC_SOFI3	0x2e
123 #define FC_SOFn3	0x36
124 #define FC_EOFN		0x41
125 #define FC_EOFT		0x42
126 
127 /**
128  * @brief FC header in big-endian order
129  */
130 typedef struct fc_header_s {
131 	uint32_t	info:4,
132 			r_ctl:4,
133 			d_id:24;
134 	uint32_t	cs_ctl:8,
135 			s_id:24;
136 	uint32_t	type:8,
137 			f_ctl:24;
138 	uint32_t	seq_id:8,
139 			df_ctl:8,
140 			seq_cnt:16;
141 	uint32_t	ox_id:16,
142 			rx_id:16;
143 	uint32_t	parameter;
144 } fc_header_t;
145 
146 /**
147  * @brief FC header in little-endian order
148  */
149 typedef struct fc_header_le_s {
150 #if BYTE_ORDER == LITTLE_ENDIAN
151 	uint32_t	d_id:24,
152 			info:4,
153 			r_ctl:4;
154 	uint32_t	s_id:24,
155 			cs_ctl:8;
156 	uint32_t	f_ctl:24,
157 			type:8;
158 	uint32_t	seq_cnt:16,
159 			df_ctl:8,
160 			seq_id:8;
161 	uint32_t	rx_id:16,
162 			ox_id:16;
163 	uint32_t	parameter;
164 #else
165 #error big endian version not defined
166 #endif
167 } fc_header_le_t;
168 
169 /**
170  * @brief FC VM header in big-endian order
171  */
172 typedef struct fc_vm_header_s {
173 	uint32_t	dst_vmid;
174 	uint32_t	src_vmid;
175 	uint32_t	rsvd0;
176 	uint32_t	rsvd1;
177 } fc_vm_header_t;
178 
179 #define FC_DFCTL_DEVICE_HDR_16_MASK	0x1
180 #define FC_DFCTL_NETWORK_HDR_MASK	0x20
181 #define FC_DFCTL_ESP_HDR_MASK		0x40
182 #define FC_DFCTL_NETWORK_HDR_SIZE	16
183 #define FC_DFCTL_ESP_HDR_SIZE		0 //FIXME
184 
185 #define FC_RCTL_FC4_DATA	0
186 #define FC_RCTL_ELS		2
187 #define FC_RCTL_BLS		8
188 
189 #define FC_RCTL_INFO_UNCAT	0
190 #define FC_RCTL_INFO_SOL_DATA	1
191 #define FC_RCTL_INFO_UNSOL_CTRL	2
192 #define FC_RCTL_INFO_SOL_CTRL	3
193 #define FC_RCTL_INFO_UNSOL_DATA	4
194 #define FC_RCTL_INFO_DATA_DESC	5
195 #define FC_RCTL_INFO_UNSOL_CMD	6
196 #define FC_RCTL_INFO_CMD_STATUS	7
197 
198 #define FC_FCTL_EXCHANGE_RESPONDER	0x800000
199 #define FC_FCTL_SEQUENCE_CONTEXT	0x400000
200 #define FC_FCTL_FIRST_SEQUENCE		0x200000
201 #define FC_FCTL_LAST_SEQUENCE		0x100000
202 #define FC_FCTL_END_SEQUENCE		0x080000
203 #define FC_FCTL_END_CONNECTION		0x040000
204 #define FC_FCTL_PRIORITY_ENABLE		0x020000
205 #define FC_FCTL_SEQUENCE_INITIATIVE	0x010000
206 #define FC_FCTL_FILL_DATA_BYTES_MASK	0x000003
207 
208 /**
209  * Common BLS definitions:
210  */
211 #define FC_INFO_NOP			0x0
212 #define FC_INFO_ABTS			0x1
213 #define FC_INFO_RMC			0x2
214 /* reserved				0x3 */
215 #define FC_INFO_BA_ACC			0x4
216 #define FC_INFO_BA_RJT			0x5
217 #define FC_INFO_PRMT			0x6
218 
219 /* (FC-LS) LS_RJT Reason Codes */
220 #define FC_REASON_INVALID_COMMAND_CODE		0x01
221 #define FC_REASON_LOGICAL_ERROR			0x03
222 #define FC_REASON_LOGICAL_BUSY			0x05
223 #define FC_REASON_PROTOCOL_ERROR		0x07
224 #define FC_REASON_UNABLE_TO_PERFORM		0x09
225 #define FC_REASON_COMMAND_NOT_SUPPORTED		0x0b
226 #define FC_REASON_COMMAND_IN_PROGRESS   	0x0e
227 #define FC_REASON_VENDOR_SPECIFIC		0xff
228 
229 /* (FC-LS) LS_RJT Reason Codes Explanations */
230 #define FC_EXPL_NO_ADDITIONAL			0x00
231 #define FC_EXPL_SPARAM_OPTIONS			0x01
232 #define FC_EXPL_SPARAM_INITIATOR		0x03
233 #define FC_EXPL_SPARAM_RECPIENT			0x05
234 #define FC_EXPL_SPARM_DATA_SIZE			0x07
235 #define FC_EXPL_SPARM_CONCURRENT		0x09
236 #define FC_EXPL_SPARM_CREDIT			0x0b
237 #define FC_EXPL_INV_PORT_NAME 			0x0d
238 #define FC_EXPL_INV_NODE_NAME 			0x0e
239 #define FC_EXPL_INV_COMMON_SPARAMS 		0x0f
240 #define FC_EXPL_INV_ASSOC_HEADER		0x11
241 #define FC_EXPL_ASSOC_HDR_REQUIRED		0x13
242 #define FC_EXPL_INV_ORIGINATOR_S_ID		0x15
243 #define FC_EXPL_INV_X_ID_COMBINATION		0x17
244 #define FC_EXPL_COMMAND_IN_PROGRESS		0x19
245 #define FC_EXPL_NPORT_LOGIN_REQUIRED		0x1e
246 #define FC_EXPL_N_PORT_ID			0x1f
247 #define FC_EXPL_INSUFFICIENT_RESOURCES		0x29
248 #define FC_EXPL_UNABLE_TO_SUPPLY_DATA		0x2a
249 #define FC_EXPL_REQUEST_NOT_SUPPORTED		0x2c
250 #define FC_EXPL_INV_PAYLOAD_LEN			0x1d
251 #define FC_EXPL_INV_PORT_NODE_NAME		0x44
252 #define FC_EXPL_LOGIN_EXT_NOT_SUPPORTED		0x46
253 #define FC_EXPL_AUTH_REQUIRED			0x48
254 #define FC_EXPL_SCAN_VALUE_NOT_ALLOWED		0x50
255 #define FC_EXPL_SCAN_VALUE_NOT_SUPPORTED 	0x51
256 #define FC_EXPL_NO_RESOURCES_ASSIGNED		0x52
257 #define FC_EXPL_MAC_ADDR_MODE_NOT_SUPPORTED	0x60
258 #define FC_EXPL_MAC_ADDR_INCORRECTLY_FORMED	0x61
259 #define FC_EXPL_VN2VN_PORT_NOT_IN_NEIGHBOR_SET	0x62
260 
261 #define FC_EXPL_INV_X_ID			0x03	/* invalid OX_ID - RX_ID combination */
262 #define FC_EXPL_SEQUENCE_ABORTED		0x05
263 
264 typedef struct fc_ba_acc_payload_s {
265 #define FC_SEQ_ID_VALID			0x80
266 #define FC_SEQ_ID_INVALID		0x00
267 	uint32_t	seq_id_validity:8,
268 			seq_id:8,
269 			:16;
270 	uint32_t	ox_id:16,
271 			rx_id:16;
272 	uint32_t	low_seq_cnt:16,
273 			high_seq_cnt:16;
274 } fc_ba_acc_payload_t;
275 
276 typedef struct fc_ba_rjt_payload_s {
277 	uint32_t	vendor_unique:8,
278 			reason_explanation:8,
279 			reason_code:8,
280 			:8;
281 } fc_ba_rjt_payload_t;
282 
283 typedef struct fc_els_gen_s {
284 	uint32_t	command_code: 8,
285 			resv1: 24;
286 } fc_els_gen_t;
287 
288 typedef struct fc_plogi_playload_s {
289 	uint32_t	command_code: 8,
290 			resv1: 24;
291 	uint32_t	common_service_parameters[4];
292 	uint32_t	port_name_hi;
293 	uint32_t	port_name_lo;
294 	uint32_t	node_name_hi;
295 	uint32_t	node_name_lo;
296 	uint32_t	class1_service_parameters[4];
297 	uint32_t	class2_service_parameters[4];
298 	uint32_t	class3_service_parameters[4];
299 	uint32_t	class4_service_parameters[4];
300 	uint32_t	vendor_version_level[4];
301 } fc_plogi_payload_t;
302 
303 typedef fc_plogi_payload_t fc_sparms_t;
304 
305 typedef struct fc_logo_payload_s {
306 	uint32_t	command_code: 8,
307 			resv1:24;
308 	uint32_t	:8,
309 			port_id:24;
310 	uint32_t	port_name_hi;
311 	uint32_t	port_name_lo;
312 } fc_logo_payload_t;
313 
314 typedef struct fc_acc_payload_s {
315 	uint32_t	command_code: 8,
316 			resv1:24;
317 } fc_acc_payload_t;
318 
319 typedef struct fc_ls_rjt_payload_s {
320 	uint32_t	command_code:8,
321 			resv1:24;
322 	uint32_t	resv2:8,
323 			reason_code:8,
324 			reason_code_exp:8,
325 			vendor_unique:8;
326 } fc_ls_rjt_payload_t;
327 
328 typedef struct fc_prli_payload_s {
329 	uint32_t	command_code:8,
330 			page_length:8,
331 			payload_length:16;
332 	uint32_t	type:8,
333 			type_ext:8,
334 			flags:16;
335 	uint32_t	originator_pa;
336 	uint32_t	responder_pa;
337 	uint32_t	:16,
338 			service_params:16;
339 } fc_prli_payload_t;
340 
341 typedef struct fc_prlo_payload_s {
342 	uint32_t	command_code:8,
343 			page_length:8,
344 			payload_length:16;
345 	uint32_t	type:8,
346 			type_ext:8,
347 			:16;
348 	uint32_t	:32;
349 	uint32_t	:32;
350 	uint32_t	:32;
351 } fc_prlo_payload_t;
352 
353 typedef struct fc_prlo_acc_payload_s {
354 	uint32_t	command_code:8,
355 			page_length:8,
356 			payload_length:16;
357 	uint32_t	type:8,
358 			type_ext:8,
359 			:4,
360 			response_code:4,
361 			:8;
362 	uint32_t	:32;
363 	uint32_t	:32;
364 	uint32_t	:32;
365 } fc_prlo_acc_payload_t;
366 
367 typedef struct fc_adisc_payload_s {
368 	uint32_t	command_code:8,
369 			payload_length:24;
370 	uint32_t	:8,
371 			hard_address:24;
372 	uint32_t	port_name_hi;
373 	uint32_t	port_name_lo;
374 	uint32_t	node_name_hi;
375 	uint32_t	node_name_lo;
376 	uint32_t	:8,
377 			port_id:24;
378 } fc_adisc_payload_t;
379 
380 /* PRLI flags */
381 #define FC_PRLI_ORIGINATOR_PA_VALID	0x8000
382 #define FC_PRLI_RESPONDER_PA_VALID	0x4000
383 #define FC_PRLI_ESTABLISH_IMAGE_PAIR	0x2000
384 #define FC_PRLI_SERVICE_PARAM_INVALID	0x0800
385 #define FC_PRLI_REQUEST_EXECUTED	0x0100
386 
387 /* PRLI Service Parameters */
388 #define FC_PRLI_REC_SUPPORT		0x0400
389 #define FC_PRLI_TASK_RETRY_ID_REQ	0x0200
390 #define FC_PRLI_RETRY			0x0100
391 #define FC_PRLI_CONFIRMED_COMPLETION	0x0080
392 #define FC_PRLI_DATA_OVERLAY		0x0040
393 #define FC_PRLI_INITIATOR_FUNCTION      0x0020
394 #define FC_PRLI_TARGET_FUNCTION         0x0010
395 #define FC_PRLI_READ_XRDY_DISABLED	0x0002
396 #define FC_PRLI_WRITE_XRDY_DISABLED	0x0001
397 
398 /* PRLO Logout flags */
399 #define FC_PRLO_REQUEST_EXECUTED	0x0001
400 
401 typedef struct fc_scr_payload_s {
402 	uint32_t	command_code:8,
403 			:24;
404 	uint32_t	:24,
405 			function:8;
406 } fc_scr_payload_t;
407 
408 #define FC_SCR_REG_FABRIC		1
409 #define FC_SCR_REG_NPORT		2
410 #define FC_SCR_REG_FULL			3
411 
412 typedef struct {
413 	uint32_t :2,
414 		rscn_event_qualifier:4,
415 		address_format:2,
416 		port_id:24;
417 } fc_rscn_affected_port_id_page_t;
418 
419 typedef struct fc_rscn_payload_s {
420 	uint32_t	command_code:8,
421 			page_length:8,
422 			payload_length:16;
423 	fc_rscn_affected_port_id_page_t port_list[1];
424 } fc_rscn_payload_t;
425 
426 typedef struct fcct_iu_header_s {
427 #if BYTE_ORDER == LITTLE_ENDIAN
428 	uint32_t	revision:8,
429 			in_id:24;
430 	uint32_t	gs_type:8,
431 			gs_subtype:8,
432 			options:8,
433 			resv1:8;
434 	uint32_t	cmd_rsp_code:16,
435 			max_residual_size:16;
436 	uint32_t	fragment_id:8,
437 			reason_code:8,
438 			reason_code_explanation:8,
439 			vendor_specific:8;
440 #else
441 #error big endian version not defined
442 #endif
443 } fcct_iu_header_t;
444 
445 #define FCCT_REJECT_INVALID_COMMAND_CODE	1
446 #define FCCT_REJECT_INVALID_VERSION_LEVEL	2
447 #define FCCT_LOGICAL_ERROR			3
448 #define FCCT_INVALID_CT_IU_SIZE			4
449 #define FCCT_LOGICAL_BUSY			5
450 #define FCCT_PROTOCOL_ERROR			7
451 #define FCCT_UNABLE_TO_PERFORM			9
452 #define FCCT_COMMAND_NOT_SUPPORTED		0x0b
453 #define FCCT_FABRIC_PORT_NAME_NOT_REGISTERED	0x0c
454 #define FCCT_SERVER_NOT_AVAILABLE		0x0d
455 #define FCCT_SESSION_COULD_NOT_BE_ESTABLISHED	0x0e
456 #define FCCT_VENDOR_SPECIFIC_ERROR		0xff
457 
458 #define FCCT_NO_ADDITIONAL_EXPLANATION		0
459 #define FCCT_AUTHORIZATION_EXCEPTION		0xf0
460 #define FCCT_AUTHENTICATION_EXCEPTION		0xf1
461 #define FCCT_DATA_BASE_FULL			0xf2
462 #define FCCT_DATA_BASE_EMPTY			0xf3
463 #define FCCT_PROCESSING_REQUEST			0xf4
464 #define FCCT_UNABLE_TO_VERIFY_CONNECTION	0xf5
465 #define FCCT_DEVICES_NOT_IN_COMMON_ZONE		0xf6
466 
467 typedef struct {
468 	fcct_iu_header_t hdr;
469 #if BYTE_ORDER == LITTLE_ENDIAN
470 	uint32_t	port_id;
471 	uint32_t	fc4_types;
472 #else
473 #error big endian version not defined
474 #endif
475 } fcgs_rft_id_t;
476 
477 typedef struct {
478 	fcct_iu_header_t hdr;
479 #if BYTE_ORDER == LITTLE_ENDIAN
480 	uint32_t	port_id;
481 	uint32_t	:16,
482 			fc4_features:8,
483 			type_code:8;
484 #else
485 #error big endian version not defined
486 #endif
487 } fcgs_rff_id_t;
488 
489 #pragma pack(1)
490 typedef struct {
491 	fcct_iu_header_t hdr;
492 #if BYTE_ORDER == LITTLE_ENDIAN
493 	uint32_t	port_id;
494 	uint64_t	port_name;
495 #else
496 #error big endian version not defined
497 #endif
498 } fcgs_rpn_id_t;
499 #pragma pack()
500 
501 #pragma pack(1)
502 typedef struct {
503 	fcct_iu_header_t hdr;
504 #if BYTE_ORDER == LITTLE_ENDIAN
505 	uint32_t	port_id;
506 	uint64_t	node_name;
507 #else
508 #error big endian version not defined
509 #endif
510 } fcgs_rnn_id_t;
511 #pragma pack()
512 
513 #define FCCT_CLASS_OF_SERVICE_F	0x1
514 #define FCCT_CLASS_OF_SERVICE_2	0x4
515 #define FCCT_CLASS_OF_SERVICE_3	0x8
516 #pragma pack(1)
517 typedef struct {
518 	fcct_iu_header_t hdr;
519 #if BYTE_ORDER == LITTLE_ENDIAN
520 	uint32_t	port_id;
521 	uint32_t	class_of_srvc;
522 #else
523 #error big endian version not defined
524 #endif
525 } fcgs_rcs_id_t;
526 #pragma pack()
527 
528 #pragma pack(1)
529 typedef struct {
530 	fcct_iu_header_t hdr;
531 #if BYTE_ORDER == LITTLE_ENDIAN
532 	uint64_t	node_name;
533 	uint8_t		name_len;
534 	char		sym_node_name[1];
535 /*TODO: need name length and symbolic name */
536 #else
537 #error big endian version not defined
538 #endif
539 } fcgs_rsnn_nn_t;
540 #pragma pack()
541 
542 #define FCCT_HDR_CMDRSP_ACCEPT	0x8002
543 #define FCCT_HDR_CMDRSP_REJECT	0x8001
544 
545 static inline void fcct_build_req_header(fcct_iu_header_t *hdr, uint16_t cmd, uint16_t max_size)
546 {
547 	/* use old rev (1) to accommodate older switches */
548 	hdr->revision = 1;
549 	hdr->in_id = 0;
550 	hdr->gs_type = FC_GS_TYPE_DIRECTORY_SERVICE;
551 	hdr->gs_subtype = FC_GS_SUBTYPE_NAME_SERVER;
552 	hdr->options = 0;
553 	hdr->resv1 = 0;
554 	hdr->cmd_rsp_code = ocs_htobe16(cmd);
555 	hdr->max_residual_size = ocs_htobe16(max_size/(sizeof(uint32_t))); /* words */
556 	hdr->fragment_id = 0;
557 	hdr->reason_code = 0;
558 	hdr->reason_code_explanation = 0;
559 	hdr->vendor_specific = 0;
560 }
561 
562 typedef struct fcct_rftid_req_s {
563 	fcct_iu_header_t	hdr;
564 	uint32_t		port_id;
565 	uint32_t		fc4_types[8];
566 } fcct_rftid_req_t;
567 
568 #define FC4_FEATURE_TARGET	(1U << 0)
569 #define FC4_FEATURE_INITIATOR	(1U << 1)
570 
571 typedef struct fcct_rffid_req_s {
572 	fcct_iu_header_t	hdr;
573 	uint32_t		port_id;
574 	uint32_t		:16,
575 				fc4_feature_bits:8,
576 				type:8;
577 } fcct_rffid_req_t;
578 
579 typedef struct fcct_gnnid_req_s {
580 	fcct_iu_header_t	hdr;
581 	uint32_t		:8,
582 				port_id:24;
583 } fcct_gnnid_req_t;
584 
585 typedef struct fcct_gpnid_req_s {
586 	fcct_iu_header_t	hdr;
587 	uint32_t		:8,
588 				port_id:24;
589 } fcct_gpnid_req_t;
590 
591 typedef struct fcct_gffid_req_s {
592 	fcct_iu_header_t	hdr;
593 	uint32_t		:8,
594 				port_id:24;
595 } fcct_gffid_req_t;
596 
597 typedef struct fcct_gidft_req_s {
598 	fcct_iu_header_t	hdr;
599 	uint32_t		:8,
600 				domain_id_scope:8,
601 				area_id_scope:8,
602 				type:8;
603 } fcct_gidft_req_t;
604 
605 typedef struct fcct_gidpt_req_s {
606 	fcct_iu_header_t	hdr;
607 	uint32_t		port_type:8,
608 				domain_id_scope:8,
609 				area_id_scope:8,
610 				flags:8;
611 } fcct_gidpt_req_t;
612 
613 typedef struct fcct_gnnid_acc_s {
614 	fcct_iu_header_t	hdr;
615 	uint64_t		node_name;
616 } fcct_gnnid_acc_t;
617 
618 typedef struct fcct_gpnid_acc_s {
619 	fcct_iu_header_t	hdr;
620 	uint64_t		port_name;
621 } fcct_gpnid_acc_t;
622 
623 typedef struct fcct_gffid_acc_s {
624 	fcct_iu_header_t	hdr;
625 	uint8_t			fc4_feature_bits;
626 } fcct_gffid_acc_t;
627 
628 typedef struct fcct_gidft_acc_s {
629 	fcct_iu_header_t	hdr;
630 	struct {
631 		uint32_t	ctl:8,
632 				port_id:24;
633 	} port_list[1];
634 } fcct_gidft_acc_t;
635 
636 typedef struct fcct_gidpt_acc_s {
637 	fcct_iu_header_t	hdr;
638 	struct {
639 		uint32_t	ctl:8,
640 				port_id:24;
641 	} port_list[1];
642 } fcct_gidpt_acc_t;
643 
644 #define FCCT_GID_PT_LAST_ID	0x80
645 #define FCCT_GIDPT_ID_MASK	0x00ffffff
646 
647 typedef struct fcp_cmnd_iu_s {
648 	uint8_t		fcp_lun[8];
649 	uint8_t		command_reference_number;
650 	uint8_t		task_attribute:3,
651 			command_priority:4,
652 			:1;
653 	uint8_t		task_management_flags;
654 	uint8_t		wrdata:1,
655 			rddata:1,
656 			additional_fcp_cdb_length:6;
657 	uint8_t		fcp_cdb[16];
658 	uint8_t		fcp_cdb_and_dl[20];	/* < May contain up to 16 bytes of CDB, followed by fcp_dl */
659 } fcp_cmnd_iu_t;
660 
661 #define FCP_LUN_ADDRESS_METHOD_SHIFT	6
662 #define FCP_LUN_ADDRESS_METHOD_MASK	0xc0
663 #define FCP_LUN_ADDR_METHOD_PERIPHERAL	0x0
664 #define FCP_LUN_ADDR_METHOD_FLAT	0x1
665 #define FCP_LUN_ADDR_METHOD_LOGICAL	0x2
666 #define FCP_LUN_ADDR_METHOD_EXTENDED	0x3
667 
668 #define FCP_LUN_ADDR_SIMPLE_MAX		0xff
669 #define FCP_LUN_ADDR_FLAT_MAX		0x3fff
670 
671 #define FCP_TASK_ATTR_SIMPLE		0x0
672 #define FCP_TASK_ATTR_HEAD_OF_QUEUE	0x1
673 #define FCP_TASK_ATTR_ORDERED		0x2
674 #define FCP_TASK_ATTR_ACA		0x4
675 #define FCP_TASK_ATTR_UNTAGGED          0x5
676 
677 #define FCP_QUERY_TASK_SET		BIT(0)
678 #define FCP_ABORT_TASK_SET		BIT(1)
679 #define FCP_CLEAR_TASK_SET		BIT(2)
680 #define FCP_QUERY_ASYNCHRONOUS_EVENT	BIT(3)
681 #define FCP_LOGICAL_UNIT_RESET		BIT(4)
682 #define FCP_TARGET_RESET		BIT(5)
683 #define FCP_CLEAR_ACA			BIT(6)
684 
685 /* SPC-4 says that the maximum length of sense data is 252 bytes */
686 #define FCP_MAX_SENSE_LEN		252
687 #define FCP_MAX_RSP_LEN			  8
688 /*
689  * FCP_RSP buffer will either have sense or response data, but not both
690  * so pick the larger.
691  */
692 #define FCP_MAX_RSP_INFO_LEN		FCP_MAX_SENSE_LEN
693 
694 typedef struct fcp_rsp_iu_s {
695 	uint8_t		rsvd[8];
696 	uint8_t		status_qualifier[2];
697 	uint8_t		flags;
698 	uint8_t		scsi_status;
699 	uint8_t		fcp_resid[4];
700 	uint8_t		fcp_sns_len[4];
701 	uint8_t		fcp_rsp_len[4];
702 	uint8_t		data[FCP_MAX_RSP_INFO_LEN];
703 } fcp_rsp_iu_t;
704 
705 /** Flag field defines: */
706 #define FCP_RSP_LEN_VALID		BIT(0)
707 #define FCP_SNS_LEN_VALID		BIT(1)
708 #define FCP_RESID_OVER			BIT(2)
709 #define FCP_RESID_UNDER			BIT(3)
710 #define FCP_CONF_REQ			BIT(4)
711 #define FCP_BIDI_READ_RESID_OVER	BIT(5)
712 #define FCP_BIDI_READ_RESID_UNDER	BIT(6)
713 #define FCP_BIDI_RSP			BIT(7)
714 
715 /** Status values: */
716 #define FCP_TMF_COMPLETE		0x00
717 #define FCP_DATA_LENGTH_MISMATCH	0x01
718 #define FCP_INVALID_FIELD		0x02
719 #define FCP_DATA_RO_MISMATCH		0x03
720 #define FCP_TMF_REJECTED		0x04
721 #define FCP_TMF_FAILED			0x05
722 #define FCP_TMF_SUCCEEDED		0x08
723 #define FCP_TMF_INCORRECT_LUN		0x09
724 
725 /** FCP-4 Table 28, TMF response information: */
726 typedef struct fc_rsp_info_s {
727 	uint8_t addl_rsp_info[3];
728 	uint8_t rsp_code;
729 	uint32_t :32;
730 } fcp_rsp_info_t;
731 
732 typedef struct fcp_xfer_rdy_iu_s {
733 	uint8_t		fcp_data_ro[4];
734 	uint8_t		fcp_burst_len[4];
735 	uint8_t		rsvd[4];
736 } fcp_xfer_rdy_iu_t;
737 
738 #define MAX_ACC_REJECT_PAYLOAD (sizeof(fc_ls_rjt_payload_t) > sizeof(fc_acc_payload_t) ? sizeof(fc_ls_rjt_payload_t) : sizeof(fc_acc_payload_t))
739 
740 #endif /* !_OCS_FCP_H */
741