1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter 4 * 5 * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 6 * 7 * Copyright (C) IBM Corporation, 2008 8 */ 9 10 #ifndef _IBMVFC_H 11 #define _IBMVFC_H 12 13 #include <linux/list.h> 14 #include <linux/types.h> 15 #include <scsi/viosrp.h> 16 17 #define IBMVFC_NAME "ibmvfc" 18 #define IBMVFC_DRIVER_VERSION "1.0.11" 19 #define IBMVFC_DRIVER_DATE "(April 12, 2013)" 20 21 #define IBMVFC_DEFAULT_TIMEOUT 60 22 #define IBMVFC_ADISC_CANCEL_TIMEOUT 45 23 #define IBMVFC_ADISC_TIMEOUT 15 24 #define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT \ 25 (IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT) 26 #define IBMVFC_INIT_TIMEOUT 120 27 #define IBMVFC_ABORT_TIMEOUT 8 28 #define IBMVFC_ABORT_WAIT_TIMEOUT 40 29 #define IBMVFC_MAX_REQUESTS_DEFAULT 100 30 31 #define IBMVFC_DEBUG 0 32 #define IBMVFC_MAX_TARGETS 1024 33 #define IBMVFC_MAX_LUN 0xffffffff 34 #define IBMVFC_MAX_SECTORS 0xffffu 35 #define IBMVFC_MAX_DISC_THREADS 4 36 #define IBMVFC_TGT_MEMPOOL_SZ 64 37 #define IBMVFC_MAX_CMDS_PER_LUN 64 38 #define IBMVFC_MAX_HOST_INIT_RETRIES 6 39 #define IBMVFC_MAX_TGT_INIT_RETRIES 3 40 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 41 #define IBMVFC_DEFAULT_LOG_LEVEL 2 42 #define IBMVFC_MAX_CDB_LEN 16 43 #define IBMVFC_CLS3_ERROR 0 44 45 /* 46 * Ensure we have resources for ERP and initialization: 47 * 1 for ERP 48 * 1 for initialization 49 * 1 for NPIV Logout 50 * 2 for BSG passthru 51 * 2 for each discovery thread 52 */ 53 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) 54 55 #define IBMVFC_MAD_SUCCESS 0x00 56 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 57 #define IBMVFC_MAD_FAILED 0xF7 58 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 59 #define IBMVFC_MAD_CRQ_ERROR 0xEF 60 61 enum ibmvfc_crq_valid { 62 IBMVFC_CRQ_CMD_RSP = 0x80, 63 IBMVFC_CRQ_INIT_RSP = 0xC0, 64 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 65 }; 66 67 enum ibmvfc_crq_init_msg { 68 IBMVFC_CRQ_INIT = 0x01, 69 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 70 }; 71 72 enum ibmvfc_crq_xport_evts { 73 IBMVFC_PARTNER_FAILED = 0x01, 74 IBMVFC_PARTNER_DEREGISTER = 0x02, 75 IBMVFC_PARTITION_MIGRATED = 0x06, 76 }; 77 78 enum ibmvfc_cmd_status_flags { 79 IBMVFC_FABRIC_MAPPED = 0x0001, 80 IBMVFC_VIOS_FAILURE = 0x0002, 81 IBMVFC_FC_FAILURE = 0x0004, 82 IBMVFC_FC_SCSI_ERROR = 0x0008, 83 IBMVFC_HW_EVENT_LOGGED = 0x0010, 84 IBMVFC_VIOS_LOGGED = 0x0020, 85 }; 86 87 enum ibmvfc_fabric_mapped_errors { 88 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 89 IBMVFC_XPORT_FAULT = 0x0002, 90 IBMVFC_CMD_TIMEOUT = 0x0003, 91 IBMVFC_ENETDOWN = 0x0004, 92 IBMVFC_HW_FAILURE = 0x0005, 93 IBMVFC_LINK_DOWN_ERR = 0x0006, 94 IBMVFC_LINK_DEAD_ERR = 0x0007, 95 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 96 IBMVFC_XPORT_BUSY = 0x000A, 97 IBMVFC_XPORT_DEAD = 0x000B, 98 IBMVFC_CONFIG_ERROR = 0x000C, 99 IBMVFC_NAME_SERVER_FAIL = 0x000D, 100 IBMVFC_LINK_HALTED = 0x000E, 101 IBMVFC_XPORT_GENERAL = 0x8000, 102 }; 103 104 enum ibmvfc_vios_errors { 105 IBMVFC_CRQ_FAILURE = 0x0001, 106 IBMVFC_SW_FAILURE = 0x0002, 107 IBMVFC_INVALID_PARAMETER = 0x0003, 108 IBMVFC_MISSING_PARAMETER = 0x0004, 109 IBMVFC_HOST_IO_BUS = 0x0005, 110 IBMVFC_TRANS_CANCELLED = 0x0006, 111 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 112 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 113 IBMVFC_PLOGI_REQUIRED = 0x0010, 114 IBMVFC_COMMAND_FAILED = 0x8000, 115 }; 116 117 enum ibmvfc_mad_types { 118 IBMVFC_NPIV_LOGIN = 0x0001, 119 IBMVFC_DISC_TARGETS = 0x0002, 120 IBMVFC_PORT_LOGIN = 0x0004, 121 IBMVFC_PROCESS_LOGIN = 0x0008, 122 IBMVFC_QUERY_TARGET = 0x0010, 123 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 124 IBMVFC_PASSTHRU = 0x0200, 125 IBMVFC_TMF_MAD = 0x0100, 126 IBMVFC_NPIV_LOGOUT = 0x0800, 127 }; 128 129 struct ibmvfc_mad_common { 130 __be32 version; 131 __be32 reserved; 132 __be32 opcode; 133 __be16 status; 134 __be16 length; 135 __be64 tag; 136 }__attribute__((packed, aligned (8))); 137 138 struct ibmvfc_npiv_login_mad { 139 struct ibmvfc_mad_common common; 140 struct srp_direct_buf buffer; 141 }__attribute__((packed, aligned (8))); 142 143 struct ibmvfc_npiv_logout_mad { 144 struct ibmvfc_mad_common common; 145 }__attribute__((packed, aligned (8))); 146 147 #define IBMVFC_MAX_NAME 256 148 149 struct ibmvfc_npiv_login { 150 __be32 ostype; 151 #define IBMVFC_OS_LINUX 0x02 152 __be32 pad; 153 __be64 max_dma_len; 154 __be32 max_payload; 155 __be32 max_response; 156 __be32 partition_num; 157 __be32 vfc_frame_version; 158 __be16 fcp_version; 159 __be16 flags; 160 #define IBMVFC_CLIENT_MIGRATED 0x01 161 #define IBMVFC_FLUSH_ON_HALT 0x02 162 __be32 max_cmds; 163 __be64 capabilities; 164 #define IBMVFC_CAN_MIGRATE 0x01 165 __be64 node_name; 166 struct srp_direct_buf async; 167 u8 partition_name[IBMVFC_MAX_NAME]; 168 u8 device_name[IBMVFC_MAX_NAME]; 169 u8 drc_name[IBMVFC_MAX_NAME]; 170 __be64 reserved2[2]; 171 }__attribute__((packed, aligned (8))); 172 173 struct ibmvfc_common_svc_parms { 174 __be16 fcph_version; 175 __be16 b2b_credit; 176 __be16 features; 177 __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 178 __be32 ratov; 179 __be32 edtov; 180 }__attribute__((packed, aligned (4))); 181 182 struct ibmvfc_service_parms { 183 struct ibmvfc_common_svc_parms common; 184 u8 port_name[8]; 185 u8 node_name[8]; 186 __be32 class1_parms[4]; 187 __be32 class2_parms[4]; 188 __be32 class3_parms[4]; 189 __be32 obsolete[4]; 190 __be32 vendor_version[4]; 191 __be32 services_avail[2]; 192 __be32 ext_len; 193 __be32 reserved[30]; 194 __be32 clk_sync_qos[2]; 195 }__attribute__((packed, aligned (4))); 196 197 struct ibmvfc_npiv_login_resp { 198 __be32 version; 199 __be16 status; 200 __be16 error; 201 __be32 flags; 202 #define IBMVFC_NATIVE_FC 0x01 203 __be32 reserved; 204 __be64 capabilities; 205 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 206 #define IBMVFC_CAN_SUPPRESS_ABTS 0x10 207 __be32 max_cmds; 208 __be32 scsi_id_sz; 209 __be64 max_dma_len; 210 __be64 scsi_id; 211 __be64 port_name; 212 __be64 node_name; 213 __be64 link_speed; 214 u8 partition_name[IBMVFC_MAX_NAME]; 215 u8 device_name[IBMVFC_MAX_NAME]; 216 u8 port_loc_code[IBMVFC_MAX_NAME]; 217 u8 drc_name[IBMVFC_MAX_NAME]; 218 struct ibmvfc_service_parms service_parms; 219 __be64 reserved2; 220 }__attribute__((packed, aligned (8))); 221 222 union ibmvfc_npiv_login_data { 223 struct ibmvfc_npiv_login login; 224 struct ibmvfc_npiv_login_resp resp; 225 }__attribute__((packed, aligned (8))); 226 227 struct ibmvfc_discover_targets_buf { 228 __be32 scsi_id[1]; 229 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 230 }; 231 232 struct ibmvfc_discover_targets { 233 struct ibmvfc_mad_common common; 234 struct srp_direct_buf buffer; 235 __be32 flags; 236 __be16 status; 237 __be16 error; 238 __be32 bufflen; 239 __be32 num_avail; 240 __be32 num_written; 241 __be64 reserved[2]; 242 }__attribute__((packed, aligned (8))); 243 244 enum ibmvfc_fc_reason { 245 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 246 IBMVFC_INVALID_VERSION = 0x02, 247 IBMVFC_LOGICAL_ERROR = 0x03, 248 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 249 IBMVFC_LOGICAL_BUSY = 0x05, 250 IBMVFC_PROTOCOL_ERROR = 0x07, 251 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 252 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 253 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 254 IBMVFC_CMD_IN_PROGRESS = 0x0E, 255 IBMVFC_VENDOR_SPECIFIC = 0xFF, 256 }; 257 258 enum ibmvfc_fc_type { 259 IBMVFC_FABRIC_REJECT = 0x01, 260 IBMVFC_PORT_REJECT = 0x02, 261 IBMVFC_LS_REJECT = 0x03, 262 IBMVFC_FABRIC_BUSY = 0x04, 263 IBMVFC_PORT_BUSY = 0x05, 264 IBMVFC_BASIC_REJECT = 0x06, 265 }; 266 267 enum ibmvfc_gs_explain { 268 IBMVFC_PORT_NAME_NOT_REG = 0x02, 269 }; 270 271 struct ibmvfc_port_login { 272 struct ibmvfc_mad_common common; 273 __be64 scsi_id; 274 __be16 reserved; 275 __be16 fc_service_class; 276 __be32 blksz; 277 __be32 hdr_per_blk; 278 __be16 status; 279 __be16 error; /* also fc_reason */ 280 __be16 fc_explain; 281 __be16 fc_type; 282 __be32 reserved2; 283 struct ibmvfc_service_parms service_parms; 284 struct ibmvfc_service_parms service_parms_change; 285 __be64 reserved3[2]; 286 }__attribute__((packed, aligned (8))); 287 288 struct ibmvfc_prli_svc_parms { 289 u8 type; 290 #define IBMVFC_SCSI_FCP_TYPE 0x08 291 u8 type_ext; 292 __be16 flags; 293 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 294 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 295 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 296 __be32 orig_pa; 297 __be32 resp_pa; 298 __be32 service_parms; 299 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 300 #define IBMVFC_PRLI_RETRY 0x00000100 301 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 302 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 303 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 304 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 305 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 306 }__attribute__((packed, aligned (4))); 307 308 struct ibmvfc_process_login { 309 struct ibmvfc_mad_common common; 310 __be64 scsi_id; 311 struct ibmvfc_prli_svc_parms parms; 312 u8 reserved[48]; 313 __be16 status; 314 __be16 error; /* also fc_reason */ 315 __be32 reserved2; 316 __be64 reserved3[2]; 317 }__attribute__((packed, aligned (8))); 318 319 struct ibmvfc_query_tgt { 320 struct ibmvfc_mad_common common; 321 __be64 wwpn; 322 __be64 scsi_id; 323 __be16 status; 324 __be16 error; 325 __be16 fc_explain; 326 __be16 fc_type; 327 __be64 reserved[2]; 328 }__attribute__((packed, aligned (8))); 329 330 struct ibmvfc_implicit_logout { 331 struct ibmvfc_mad_common common; 332 __be64 old_scsi_id; 333 __be64 reserved[2]; 334 }__attribute__((packed, aligned (8))); 335 336 struct ibmvfc_tmf { 337 struct ibmvfc_mad_common common; 338 __be64 scsi_id; 339 struct scsi_lun lun; 340 __be32 flags; 341 #define IBMVFC_TMF_ABORT_TASK 0x02 342 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 343 #define IBMVFC_TMF_LUN_RESET 0x10 344 #define IBMVFC_TMF_TGT_RESET 0x20 345 #define IBMVFC_TMF_LUA_VALID 0x40 346 #define IBMVFC_TMF_SUPPRESS_ABTS 0x80 347 __be32 cancel_key; 348 __be32 my_cancel_key; 349 __be32 pad; 350 __be64 reserved[2]; 351 }__attribute__((packed, aligned (8))); 352 353 enum ibmvfc_fcp_rsp_info_codes { 354 RSP_NO_FAILURE = 0x00, 355 RSP_TMF_REJECTED = 0x04, 356 RSP_TMF_FAILED = 0x05, 357 RSP_TMF_INVALID_LUN = 0x09, 358 }; 359 360 struct ibmvfc_fcp_rsp_info { 361 u8 reserved[3]; 362 u8 rsp_code; 363 u8 reserved2[4]; 364 }__attribute__((packed, aligned (2))); 365 366 enum ibmvfc_fcp_rsp_flags { 367 FCP_BIDI_RSP = 0x80, 368 FCP_BIDI_READ_RESID_UNDER = 0x40, 369 FCP_BIDI_READ_RESID_OVER = 0x20, 370 FCP_CONF_REQ = 0x10, 371 FCP_RESID_UNDER = 0x08, 372 FCP_RESID_OVER = 0x04, 373 FCP_SNS_LEN_VALID = 0x02, 374 FCP_RSP_LEN_VALID = 0x01, 375 }; 376 377 union ibmvfc_fcp_rsp_data { 378 struct ibmvfc_fcp_rsp_info info; 379 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 380 }__attribute__((packed, aligned (8))); 381 382 struct ibmvfc_fcp_rsp { 383 __be64 reserved; 384 __be16 retry_delay_timer; 385 u8 flags; 386 u8 scsi_status; 387 __be32 fcp_resid; 388 __be32 fcp_sense_len; 389 __be32 fcp_rsp_len; 390 union ibmvfc_fcp_rsp_data data; 391 }__attribute__((packed, aligned (8))); 392 393 enum ibmvfc_cmd_flags { 394 IBMVFC_SCATTERLIST = 0x0001, 395 IBMVFC_NO_MEM_DESC = 0x0002, 396 IBMVFC_READ = 0x0004, 397 IBMVFC_WRITE = 0x0008, 398 IBMVFC_TMF = 0x0080, 399 IBMVFC_CLASS_3_ERR = 0x0100, 400 }; 401 402 enum ibmvfc_fc_task_attr { 403 IBMVFC_SIMPLE_TASK = 0x00, 404 IBMVFC_HEAD_OF_QUEUE = 0x01, 405 IBMVFC_ORDERED_TASK = 0x02, 406 IBMVFC_ACA_TASK = 0x04, 407 }; 408 409 enum ibmvfc_fc_tmf_flags { 410 IBMVFC_ABORT_TASK_SET = 0x02, 411 IBMVFC_LUN_RESET = 0x10, 412 IBMVFC_TARGET_RESET = 0x20, 413 }; 414 415 struct ibmvfc_fcp_cmd_iu { 416 struct scsi_lun lun; 417 u8 crn; 418 u8 pri_task_attr; 419 u8 tmf_flags; 420 u8 add_cdb_len; 421 #define IBMVFC_RDDATA 0x02 422 #define IBMVFC_WRDATA 0x01 423 u8 cdb[IBMVFC_MAX_CDB_LEN]; 424 __be32 xfer_len; 425 }__attribute__((packed, aligned (4))); 426 427 struct ibmvfc_cmd { 428 __be64 task_tag; 429 __be32 frame_type; 430 __be32 payload_len; 431 __be32 resp_len; 432 __be32 adapter_resid; 433 __be16 status; 434 __be16 error; 435 __be16 flags; 436 __be16 response_flags; 437 #define IBMVFC_ADAPTER_RESID_VALID 0x01 438 __be32 cancel_key; 439 __be32 exchange_id; 440 struct srp_direct_buf ext_func; 441 struct srp_direct_buf ioba; 442 struct srp_direct_buf resp; 443 __be64 correlation; 444 __be64 tgt_scsi_id; 445 __be64 tag; 446 __be64 reserved3[2]; 447 struct ibmvfc_fcp_cmd_iu iu; 448 struct ibmvfc_fcp_rsp rsp; 449 }__attribute__((packed, aligned (8))); 450 451 struct ibmvfc_passthru_fc_iu { 452 __be32 payload[7]; 453 #define IBMVFC_ADISC 0x52000000 454 __be32 response[7]; 455 }; 456 457 struct ibmvfc_passthru_iu { 458 __be64 task_tag; 459 __be32 cmd_len; 460 __be32 rsp_len; 461 __be16 status; 462 __be16 error; 463 __be32 flags; 464 #define IBMVFC_FC_ELS 0x01 465 #define IBMVFC_FC_CT_IU 0x02 466 __be32 cancel_key; 467 #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 468 #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 469 __be32 reserved; 470 struct srp_direct_buf cmd; 471 struct srp_direct_buf rsp; 472 __be64 correlation; 473 __be64 scsi_id; 474 __be64 tag; 475 __be64 reserved2[2]; 476 }__attribute__((packed, aligned (8))); 477 478 struct ibmvfc_passthru_mad { 479 struct ibmvfc_mad_common common; 480 struct srp_direct_buf cmd_ioba; 481 struct ibmvfc_passthru_iu iu; 482 struct ibmvfc_passthru_fc_iu fc_iu; 483 }__attribute__((packed, aligned (8))); 484 485 struct ibmvfc_trace_start_entry { 486 u32 xfer_len; 487 }__attribute__((packed)); 488 489 struct ibmvfc_trace_end_entry { 490 u16 status; 491 u16 error; 492 u8 fcp_rsp_flags; 493 u8 rsp_code; 494 u8 scsi_status; 495 u8 reserved; 496 }__attribute__((packed)); 497 498 struct ibmvfc_trace_entry { 499 struct ibmvfc_event *evt; 500 u32 time; 501 u32 scsi_id; 502 u32 lun; 503 u8 fmt; 504 u8 op_code; 505 u8 tmf_flags; 506 u8 type; 507 #define IBMVFC_TRC_START 0x00 508 #define IBMVFC_TRC_END 0xff 509 union { 510 struct ibmvfc_trace_start_entry start; 511 struct ibmvfc_trace_end_entry end; 512 } u; 513 }__attribute__((packed, aligned (8))); 514 515 enum ibmvfc_crq_formats { 516 IBMVFC_CMD_FORMAT = 0x01, 517 IBMVFC_ASYNC_EVENT = 0x02, 518 IBMVFC_MAD_FORMAT = 0x04, 519 }; 520 521 enum ibmvfc_async_event { 522 IBMVFC_AE_ELS_PLOGI = 0x0001, 523 IBMVFC_AE_ELS_LOGO = 0x0002, 524 IBMVFC_AE_ELS_PRLO = 0x0004, 525 IBMVFC_AE_SCN_NPORT = 0x0008, 526 IBMVFC_AE_SCN_GROUP = 0x0010, 527 IBMVFC_AE_SCN_DOMAIN = 0x0020, 528 IBMVFC_AE_SCN_FABRIC = 0x0040, 529 IBMVFC_AE_LINK_UP = 0x0080, 530 IBMVFC_AE_LINK_DOWN = 0x0100, 531 IBMVFC_AE_LINK_DEAD = 0x0200, 532 IBMVFC_AE_HALT = 0x0400, 533 IBMVFC_AE_RESUME = 0x0800, 534 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 535 }; 536 537 struct ibmvfc_async_desc { 538 const char *desc; 539 enum ibmvfc_async_event ae; 540 int log_level; 541 }; 542 543 struct ibmvfc_crq { 544 volatile u8 valid; 545 volatile u8 format; 546 u8 reserved[6]; 547 volatile __be64 ioba; 548 }__attribute__((packed, aligned (8))); 549 550 struct ibmvfc_crq_queue { 551 struct ibmvfc_crq *msgs; 552 int size, cur; 553 dma_addr_t msg_token; 554 }; 555 556 enum ibmvfc_ae_link_state { 557 IBMVFC_AE_LS_LINK_UP = 0x01, 558 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 559 IBMVFC_AE_LS_LINK_DOWN = 0x04, 560 IBMVFC_AE_LS_LINK_DEAD = 0x08, 561 }; 562 563 struct ibmvfc_async_crq { 564 volatile u8 valid; 565 u8 link_state; 566 u8 pad[2]; 567 __be32 pad2; 568 volatile __be64 event; 569 volatile __be64 scsi_id; 570 volatile __be64 wwpn; 571 volatile __be64 node_name; 572 __be64 reserved; 573 }__attribute__((packed, aligned (8))); 574 575 struct ibmvfc_async_crq_queue { 576 struct ibmvfc_async_crq *msgs; 577 int size, cur; 578 dma_addr_t msg_token; 579 }; 580 581 union ibmvfc_iu { 582 struct ibmvfc_mad_common mad_common; 583 struct ibmvfc_npiv_login_mad npiv_login; 584 struct ibmvfc_npiv_logout_mad npiv_logout; 585 struct ibmvfc_discover_targets discover_targets; 586 struct ibmvfc_port_login plogi; 587 struct ibmvfc_process_login prli; 588 struct ibmvfc_query_tgt query_tgt; 589 struct ibmvfc_implicit_logout implicit_logout; 590 struct ibmvfc_tmf tmf; 591 struct ibmvfc_cmd cmd; 592 struct ibmvfc_passthru_mad passthru; 593 }__attribute__((packed, aligned (8))); 594 595 enum ibmvfc_target_action { 596 IBMVFC_TGT_ACTION_NONE = 0, 597 IBMVFC_TGT_ACTION_INIT, 598 IBMVFC_TGT_ACTION_INIT_WAIT, 599 IBMVFC_TGT_ACTION_DEL_RPORT, 600 IBMVFC_TGT_ACTION_DELETED_RPORT, 601 }; 602 603 struct ibmvfc_target { 604 struct list_head queue; 605 struct ibmvfc_host *vhost; 606 u64 scsi_id; 607 u64 new_scsi_id; 608 struct fc_rport *rport; 609 int target_id; 610 enum ibmvfc_target_action action; 611 int need_login; 612 int add_rport; 613 int init_retries; 614 int logo_rcvd; 615 u32 cancel_key; 616 struct ibmvfc_service_parms service_parms; 617 struct ibmvfc_service_parms service_parms_change; 618 struct fc_rport_identifiers ids; 619 void (*job_step) (struct ibmvfc_target *); 620 struct timer_list timer; 621 struct kref kref; 622 }; 623 624 /* a unit of work for the hosting partition */ 625 struct ibmvfc_event { 626 struct list_head queue; 627 struct ibmvfc_host *vhost; 628 struct ibmvfc_target *tgt; 629 struct scsi_cmnd *cmnd; 630 atomic_t free; 631 union ibmvfc_iu *xfer_iu; 632 void (*done) (struct ibmvfc_event *); 633 struct ibmvfc_crq crq; 634 union ibmvfc_iu iu; 635 union ibmvfc_iu *sync_iu; 636 struct srp_direct_buf *ext_list; 637 dma_addr_t ext_list_token; 638 struct completion comp; 639 struct completion *eh_comp; 640 struct timer_list timer; 641 }; 642 643 /* a pool of event structs for use */ 644 struct ibmvfc_event_pool { 645 struct ibmvfc_event *events; 646 u32 size; 647 union ibmvfc_iu *iu_storage; 648 dma_addr_t iu_token; 649 }; 650 651 enum ibmvfc_host_action { 652 IBMVFC_HOST_ACTION_NONE = 0, 653 IBMVFC_HOST_ACTION_RESET, 654 IBMVFC_HOST_ACTION_REENABLE, 655 IBMVFC_HOST_ACTION_LOGO, 656 IBMVFC_HOST_ACTION_LOGO_WAIT, 657 IBMVFC_HOST_ACTION_INIT, 658 IBMVFC_HOST_ACTION_INIT_WAIT, 659 IBMVFC_HOST_ACTION_QUERY, 660 IBMVFC_HOST_ACTION_QUERY_TGTS, 661 IBMVFC_HOST_ACTION_TGT_DEL, 662 IBMVFC_HOST_ACTION_ALLOC_TGTS, 663 IBMVFC_HOST_ACTION_TGT_INIT, 664 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 665 }; 666 667 enum ibmvfc_host_state { 668 IBMVFC_NO_CRQ = 0, 669 IBMVFC_INITIALIZING, 670 IBMVFC_ACTIVE, 671 IBMVFC_HALTED, 672 IBMVFC_LINK_DOWN, 673 IBMVFC_LINK_DEAD, 674 IBMVFC_HOST_OFFLINE, 675 }; 676 677 struct ibmvfc_host { 678 char name[8]; 679 struct list_head queue; 680 struct Scsi_Host *host; 681 enum ibmvfc_host_state state; 682 enum ibmvfc_host_action action; 683 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 684 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 685 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 686 struct ibmvfc_trace_entry *trace; 687 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 688 int num_targets; 689 struct list_head targets; 690 struct list_head sent; 691 struct list_head free; 692 struct device *dev; 693 struct ibmvfc_event_pool pool; 694 struct dma_pool *sg_pool; 695 mempool_t *tgt_pool; 696 struct ibmvfc_crq_queue crq; 697 struct ibmvfc_async_crq_queue async_crq; 698 struct ibmvfc_npiv_login login_info; 699 union ibmvfc_npiv_login_data *login_buf; 700 dma_addr_t login_buf_dma; 701 int disc_buf_sz; 702 int log_level; 703 struct ibmvfc_discover_targets_buf *disc_buf; 704 struct mutex passthru_mutex; 705 int task_set; 706 int init_retries; 707 int discovery_threads; 708 int abort_threads; 709 int client_migrated; 710 int reinit; 711 int delay_init; 712 int scan_complete; 713 int logged_in; 714 int aborting_passthru; 715 int events_to_log; 716 #define IBMVFC_AE_LINKUP 0x0001 717 #define IBMVFC_AE_LINKDOWN 0x0002 718 #define IBMVFC_AE_RSCN 0x0004 719 dma_addr_t disc_buf_dma; 720 unsigned int partition_number; 721 char partition_name[97]; 722 void (*job_step) (struct ibmvfc_host *); 723 struct task_struct *work_thread; 724 struct tasklet_struct tasklet; 725 struct work_struct rport_add_work_q; 726 wait_queue_head_t init_wait_q; 727 wait_queue_head_t work_wait_q; 728 }; 729 730 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 731 732 #define tgt_dbg(t, fmt, ...) \ 733 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 734 735 #define tgt_info(t, fmt, ...) \ 736 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 737 738 #define tgt_err(t, fmt, ...) \ 739 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 740 741 #define tgt_log(t, level, fmt, ...) \ 742 do { \ 743 if ((t)->vhost->log_level >= level) \ 744 tgt_err(t, fmt, ##__VA_ARGS__); \ 745 } while (0) 746 747 #define ibmvfc_dbg(vhost, ...) \ 748 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 749 750 #define ibmvfc_log(vhost, level, ...) \ 751 do { \ 752 if ((vhost)->log_level >= level) \ 753 dev_err((vhost)->dev, ##__VA_ARGS__); \ 754 } while (0) 755 756 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 757 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 758 759 #ifdef CONFIG_SCSI_IBMVFC_TRACE 760 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 761 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 762 #else 763 #define ibmvfc_create_trace_file(kobj, attr) 0 764 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 765 #endif 766 767 #endif 768