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 #define IBMVFC_MQ 1 45 #define IBMVFC_SCSI_CHANNELS 8 46 #define IBMVFC_MAX_SCSI_QUEUES 16 47 #define IBMVFC_SCSI_HW_QUEUES 8 48 #define IBMVFC_MIG_NO_SUB_TO_CRQ 0 49 #define IBMVFC_MIG_NO_N_TO_M 0 50 51 /* 52 * Ensure we have resources for ERP and initialization: 53 * 1 for ERP 54 * 1 for initialization 55 * 1 for NPIV Logout 56 * 2 for BSG passthru 57 * 2 for each discovery thread 58 */ 59 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) 60 61 #define IBMVFC_MAD_SUCCESS 0x00 62 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 63 #define IBMVFC_MAD_VERSION_NOT_SUPP 0xF2 64 #define IBMVFC_MAD_FAILED 0xF7 65 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 66 #define IBMVFC_MAD_CRQ_ERROR 0xEF 67 68 enum ibmvfc_crq_valid { 69 IBMVFC_CRQ_CMD_RSP = 0x80, 70 IBMVFC_CRQ_INIT_RSP = 0xC0, 71 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 72 }; 73 74 enum ibmvfc_crq_init_msg { 75 IBMVFC_CRQ_INIT = 0x01, 76 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 77 }; 78 79 enum ibmvfc_crq_xport_evts { 80 IBMVFC_PARTNER_FAILED = 0x01, 81 IBMVFC_PARTNER_DEREGISTER = 0x02, 82 IBMVFC_PARTITION_MIGRATED = 0x06, 83 }; 84 85 enum ibmvfc_cmd_status_flags { 86 IBMVFC_FABRIC_MAPPED = 0x0001, 87 IBMVFC_VIOS_FAILURE = 0x0002, 88 IBMVFC_FC_FAILURE = 0x0004, 89 IBMVFC_FC_SCSI_ERROR = 0x0008, 90 IBMVFC_HW_EVENT_LOGGED = 0x0010, 91 IBMVFC_VIOS_LOGGED = 0x0020, 92 }; 93 94 enum ibmvfc_fabric_mapped_errors { 95 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 96 IBMVFC_XPORT_FAULT = 0x0002, 97 IBMVFC_CMD_TIMEOUT = 0x0003, 98 IBMVFC_ENETDOWN = 0x0004, 99 IBMVFC_HW_FAILURE = 0x0005, 100 IBMVFC_LINK_DOWN_ERR = 0x0006, 101 IBMVFC_LINK_DEAD_ERR = 0x0007, 102 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 103 IBMVFC_XPORT_BUSY = 0x000A, 104 IBMVFC_XPORT_DEAD = 0x000B, 105 IBMVFC_CONFIG_ERROR = 0x000C, 106 IBMVFC_NAME_SERVER_FAIL = 0x000D, 107 IBMVFC_LINK_HALTED = 0x000E, 108 IBMVFC_XPORT_GENERAL = 0x8000, 109 }; 110 111 enum ibmvfc_vios_errors { 112 IBMVFC_CRQ_FAILURE = 0x0001, 113 IBMVFC_SW_FAILURE = 0x0002, 114 IBMVFC_INVALID_PARAMETER = 0x0003, 115 IBMVFC_MISSING_PARAMETER = 0x0004, 116 IBMVFC_HOST_IO_BUS = 0x0005, 117 IBMVFC_TRANS_CANCELLED = 0x0006, 118 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 119 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 120 IBMVFC_PLOGI_REQUIRED = 0x0010, 121 IBMVFC_COMMAND_FAILED = 0x8000, 122 }; 123 124 enum ibmvfc_mad_types { 125 IBMVFC_NPIV_LOGIN = 0x0001, 126 IBMVFC_DISC_TARGETS = 0x0002, 127 IBMVFC_PORT_LOGIN = 0x0004, 128 IBMVFC_PROCESS_LOGIN = 0x0008, 129 IBMVFC_QUERY_TARGET = 0x0010, 130 IBMVFC_MOVE_LOGIN = 0x0020, 131 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 132 IBMVFC_PASSTHRU = 0x0200, 133 IBMVFC_TMF_MAD = 0x0100, 134 IBMVFC_NPIV_LOGOUT = 0x0800, 135 IBMVFC_CHANNEL_ENQUIRY = 0x1000, 136 IBMVFC_CHANNEL_SETUP = 0x2000, 137 IBMVFC_CONNECTION_INFO = 0x4000, 138 }; 139 140 struct ibmvfc_mad_common { 141 __be32 version; 142 __be32 reserved; 143 __be32 opcode; 144 __be16 status; 145 __be16 length; 146 __be64 tag; 147 } __packed __aligned(8); 148 149 struct ibmvfc_npiv_login_mad { 150 struct ibmvfc_mad_common common; 151 struct srp_direct_buf buffer; 152 } __packed __aligned(8); 153 154 struct ibmvfc_npiv_logout_mad { 155 struct ibmvfc_mad_common common; 156 } __packed __aligned(8); 157 158 #define IBMVFC_MAX_NAME 256 159 160 struct ibmvfc_npiv_login { 161 __be32 ostype; 162 #define IBMVFC_OS_LINUX 0x02 163 __be32 pad; 164 __be64 max_dma_len; 165 __be32 max_payload; 166 __be32 max_response; 167 __be32 partition_num; 168 __be32 vfc_frame_version; 169 __be16 fcp_version; 170 __be16 flags; 171 #define IBMVFC_CLIENT_MIGRATED 0x01 172 #define IBMVFC_FLUSH_ON_HALT 0x02 173 __be32 max_cmds; 174 __be64 capabilities; 175 #define IBMVFC_CAN_MIGRATE 0x01 176 #define IBMVFC_CAN_USE_CHANNELS 0x02 177 #define IBMVFC_CAN_HANDLE_FPIN 0x04 178 #define IBMVFC_CAN_USE_MAD_VERSION 0x08 179 #define IBMVFC_CAN_SEND_VF_WWPN 0x10 180 __be64 node_name; 181 struct srp_direct_buf async; 182 u8 partition_name[IBMVFC_MAX_NAME]; 183 u8 device_name[IBMVFC_MAX_NAME]; 184 u8 drc_name[IBMVFC_MAX_NAME]; 185 __be64 reserved2[2]; 186 } __packed __aligned(8); 187 188 struct ibmvfc_common_svc_parms { 189 __be16 fcph_version; 190 __be16 b2b_credit; 191 __be16 features; 192 __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 193 __be32 ratov; 194 __be32 edtov; 195 } __packed __aligned(4); 196 197 struct ibmvfc_service_parms { 198 struct ibmvfc_common_svc_parms common; 199 u8 port_name[8]; 200 u8 node_name[8]; 201 __be32 class1_parms[4]; 202 __be32 class2_parms[4]; 203 __be32 class3_parms[4]; 204 __be32 obsolete[4]; 205 __be32 vendor_version[4]; 206 __be32 services_avail[2]; 207 __be32 ext_len; 208 __be32 reserved[30]; 209 __be32 clk_sync_qos[2]; 210 __be32 reserved2; 211 } __packed __aligned(4); 212 213 struct ibmvfc_npiv_login_resp { 214 __be32 version; 215 __be16 status; 216 __be16 error; 217 __be32 flags; 218 #define IBMVFC_NATIVE_FC 0x01 219 __be32 reserved; 220 __be64 capabilities; 221 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 222 #define IBMVFC_CAN_SUPPRESS_ABTS 0x10 223 #define IBMVFC_MAD_VERSION_CAP 0x20 224 #define IBMVFC_HANDLE_VF_WWPN 0x40 225 #define IBMVFC_CAN_SUPPORT_CHANNELS 0x80 226 __be32 max_cmds; 227 __be32 scsi_id_sz; 228 __be64 max_dma_len; 229 __be64 scsi_id; 230 __be64 port_name; 231 __be64 node_name; 232 __be64 link_speed; 233 u8 partition_name[IBMVFC_MAX_NAME]; 234 u8 device_name[IBMVFC_MAX_NAME]; 235 u8 port_loc_code[IBMVFC_MAX_NAME]; 236 u8 drc_name[IBMVFC_MAX_NAME]; 237 struct ibmvfc_service_parms service_parms; 238 __be64 reserved2; 239 } __packed __aligned(8); 240 241 union ibmvfc_npiv_login_data { 242 struct ibmvfc_npiv_login login; 243 struct ibmvfc_npiv_login_resp resp; 244 } __packed __aligned(8); 245 246 struct ibmvfc_discover_targets_entry { 247 __be32 scsi_id; 248 __be32 pad; 249 __be64 wwpn; 250 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 251 } __packed __aligned(8); 252 253 struct ibmvfc_discover_targets { 254 struct ibmvfc_mad_common common; 255 struct srp_direct_buf buffer; 256 __be32 flags; 257 #define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST 0x02 258 __be16 status; 259 __be16 error; 260 __be32 bufflen; 261 __be32 num_avail; 262 __be32 num_written; 263 __be64 reserved[2]; 264 } __packed __aligned(8); 265 266 enum ibmvfc_fc_reason { 267 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 268 IBMVFC_INVALID_VERSION = 0x02, 269 IBMVFC_LOGICAL_ERROR = 0x03, 270 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 271 IBMVFC_LOGICAL_BUSY = 0x05, 272 IBMVFC_PROTOCOL_ERROR = 0x07, 273 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 274 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 275 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 276 IBMVFC_CMD_IN_PROGRESS = 0x0E, 277 IBMVFC_VENDOR_SPECIFIC = 0xFF, 278 }; 279 280 enum ibmvfc_fc_type { 281 IBMVFC_FABRIC_REJECT = 0x01, 282 IBMVFC_PORT_REJECT = 0x02, 283 IBMVFC_LS_REJECT = 0x03, 284 IBMVFC_FABRIC_BUSY = 0x04, 285 IBMVFC_PORT_BUSY = 0x05, 286 IBMVFC_BASIC_REJECT = 0x06, 287 }; 288 289 enum ibmvfc_gs_explain { 290 IBMVFC_PORT_NAME_NOT_REG = 0x02, 291 }; 292 293 struct ibmvfc_port_login { 294 struct ibmvfc_mad_common common; 295 __be64 scsi_id; 296 __be16 reserved; 297 __be16 fc_service_class; 298 __be32 blksz; 299 __be32 hdr_per_blk; 300 __be16 status; 301 __be16 error; /* also fc_reason */ 302 __be16 fc_explain; 303 __be16 fc_type; 304 __be32 reserved2; 305 struct ibmvfc_service_parms service_parms; 306 struct ibmvfc_service_parms service_parms_change; 307 __be64 target_wwpn; 308 __be64 reserved3[2]; 309 } __packed __aligned(8); 310 311 struct ibmvfc_move_login { 312 struct ibmvfc_mad_common common; 313 __be64 old_scsi_id; 314 __be64 new_scsi_id; 315 __be64 wwpn; 316 __be64 node_name; 317 __be32 flags; 318 #define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED 0x01 319 #define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED 0x02 320 #define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED 0x04 321 __be32 reserved; 322 struct ibmvfc_service_parms service_parms; 323 struct ibmvfc_service_parms service_parms_change; 324 __be32 reserved2; 325 __be16 service_class; 326 __be16 vios_flags; 327 #define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER 0x01 328 __be64 reserved3; 329 } __packed __aligned(8); 330 331 struct ibmvfc_prli_svc_parms { 332 u8 type; 333 #define IBMVFC_SCSI_FCP_TYPE 0x08 334 u8 type_ext; 335 __be16 flags; 336 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 337 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 338 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 339 __be32 orig_pa; 340 __be32 resp_pa; 341 __be32 service_parms; 342 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 343 #define IBMVFC_PRLI_RETRY 0x00000100 344 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 345 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 346 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 347 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 348 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 349 } __packed __aligned(4); 350 351 struct ibmvfc_process_login { 352 struct ibmvfc_mad_common common; 353 __be64 scsi_id; 354 struct ibmvfc_prli_svc_parms parms; 355 u8 reserved[48]; 356 __be16 status; 357 __be16 error; /* also fc_reason */ 358 __be32 reserved2; 359 __be64 target_wwpn; 360 __be64 reserved3[2]; 361 } __packed __aligned(8); 362 363 struct ibmvfc_query_tgt { 364 struct ibmvfc_mad_common common; 365 __be64 wwpn; 366 __be64 scsi_id; 367 __be16 status; 368 __be16 error; 369 __be16 fc_explain; 370 __be16 fc_type; 371 __be64 reserved[2]; 372 } __packed __aligned(8); 373 374 struct ibmvfc_implicit_logout { 375 struct ibmvfc_mad_common common; 376 __be64 old_scsi_id; 377 __be64 reserved[2]; 378 } __packed __aligned(8); 379 380 struct ibmvfc_tmf { 381 struct ibmvfc_mad_common common; 382 __be64 scsi_id; 383 struct scsi_lun lun; 384 __be32 flags; 385 #define IBMVFC_TMF_ABORT_TASK 0x02 386 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 387 #define IBMVFC_TMF_LUN_RESET 0x10 388 #define IBMVFC_TMF_TGT_RESET 0x20 389 #define IBMVFC_TMF_LUA_VALID 0x40 390 #define IBMVFC_TMF_SUPPRESS_ABTS 0x80 391 __be32 cancel_key; 392 __be32 my_cancel_key; 393 __be32 pad; 394 __be64 target_wwpn; 395 __be64 task_tag; 396 __be64 reserved[2]; 397 } __packed __aligned(8); 398 399 enum ibmvfc_fcp_rsp_info_codes { 400 RSP_NO_FAILURE = 0x00, 401 RSP_TMF_REJECTED = 0x04, 402 RSP_TMF_FAILED = 0x05, 403 RSP_TMF_INVALID_LUN = 0x09, 404 }; 405 406 struct ibmvfc_fcp_rsp_info { 407 u8 reserved[3]; 408 u8 rsp_code; 409 u8 reserved2[4]; 410 } __packed __aligned(2); 411 412 enum ibmvfc_fcp_rsp_flags { 413 FCP_BIDI_RSP = 0x80, 414 FCP_BIDI_READ_RESID_UNDER = 0x40, 415 FCP_BIDI_READ_RESID_OVER = 0x20, 416 FCP_CONF_REQ = 0x10, 417 FCP_RESID_UNDER = 0x08, 418 FCP_RESID_OVER = 0x04, 419 FCP_SNS_LEN_VALID = 0x02, 420 FCP_RSP_LEN_VALID = 0x01, 421 }; 422 423 union ibmvfc_fcp_rsp_data { 424 struct ibmvfc_fcp_rsp_info info; 425 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 426 } __packed __aligned(8); 427 428 struct ibmvfc_fcp_rsp { 429 __be64 reserved; 430 __be16 retry_delay_timer; 431 u8 flags; 432 u8 scsi_status; 433 __be32 fcp_resid; 434 __be32 fcp_sense_len; 435 __be32 fcp_rsp_len; 436 union ibmvfc_fcp_rsp_data data; 437 } __packed __aligned(8); 438 439 enum ibmvfc_cmd_flags { 440 IBMVFC_SCATTERLIST = 0x0001, 441 IBMVFC_NO_MEM_DESC = 0x0002, 442 IBMVFC_READ = 0x0004, 443 IBMVFC_WRITE = 0x0008, 444 IBMVFC_TMF = 0x0080, 445 IBMVFC_CLASS_3_ERR = 0x0100, 446 }; 447 448 enum ibmvfc_fc_task_attr { 449 IBMVFC_SIMPLE_TASK = 0x00, 450 IBMVFC_HEAD_OF_QUEUE = 0x01, 451 IBMVFC_ORDERED_TASK = 0x02, 452 IBMVFC_ACA_TASK = 0x04, 453 }; 454 455 enum ibmvfc_fc_tmf_flags { 456 IBMVFC_ABORT_TASK_SET = 0x02, 457 IBMVFC_LUN_RESET = 0x10, 458 IBMVFC_TARGET_RESET = 0x20, 459 }; 460 461 struct ibmvfc_fcp_cmd_iu { 462 struct scsi_lun lun; 463 u8 crn; 464 u8 pri_task_attr; 465 u8 tmf_flags; 466 u8 add_cdb_len; 467 #define IBMVFC_RDDATA 0x02 468 #define IBMVFC_WRDATA 0x01 469 u8 cdb[IBMVFC_MAX_CDB_LEN]; 470 __be32 xfer_len; 471 } __packed __aligned(4); 472 473 struct ibmvfc_cmd { 474 __be64 task_tag; 475 __be32 frame_type; 476 __be32 payload_len; 477 __be32 resp_len; 478 __be32 adapter_resid; 479 __be16 status; 480 __be16 error; 481 __be16 flags; 482 __be16 response_flags; 483 #define IBMVFC_ADAPTER_RESID_VALID 0x01 484 __be32 cancel_key; 485 __be32 exchange_id; 486 struct srp_direct_buf ext_func; 487 struct srp_direct_buf ioba; 488 struct srp_direct_buf resp; 489 __be64 correlation; 490 __be64 tgt_scsi_id; 491 __be64 tag; 492 __be64 target_wwpn; 493 __be64 reserved3; 494 union { 495 struct { 496 struct ibmvfc_fcp_cmd_iu iu; 497 struct ibmvfc_fcp_rsp rsp; 498 } v1; 499 struct { 500 __be64 reserved4; 501 struct ibmvfc_fcp_cmd_iu iu; 502 struct ibmvfc_fcp_rsp rsp; 503 } v2; 504 }; 505 } __packed __aligned(8); 506 507 struct ibmvfc_passthru_fc_iu { 508 __be32 payload[7]; 509 #define IBMVFC_ADISC 0x52000000 510 __be32 response[7]; 511 }; 512 513 struct ibmvfc_passthru_iu { 514 __be64 task_tag; 515 __be32 cmd_len; 516 __be32 rsp_len; 517 __be16 status; 518 __be16 error; 519 __be32 flags; 520 #define IBMVFC_FC_ELS 0x01 521 #define IBMVFC_FC_CT_IU 0x02 522 __be32 cancel_key; 523 #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 524 #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 525 __be32 reserved; 526 struct srp_direct_buf cmd; 527 struct srp_direct_buf rsp; 528 __be64 correlation; 529 __be64 scsi_id; 530 __be64 tag; 531 __be64 target_wwpn; 532 __be64 reserved2[2]; 533 } __packed __aligned(8); 534 535 struct ibmvfc_passthru_mad { 536 struct ibmvfc_mad_common common; 537 struct srp_direct_buf cmd_ioba; 538 struct ibmvfc_passthru_iu iu; 539 struct ibmvfc_passthru_fc_iu fc_iu; 540 } __packed __aligned(8); 541 542 struct ibmvfc_channel_enquiry { 543 struct ibmvfc_mad_common common; 544 __be32 flags; 545 #define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT 0x01 546 #define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG 0x02 547 #define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT 0x04 548 __be32 num_scsi_subq_channels; 549 __be32 num_nvmeof_subq_channels; 550 __be32 num_scsi_vas_channels; 551 __be32 num_nvmeof_vas_channels; 552 } __packed __aligned(8); 553 554 struct ibmvfc_channel_setup_mad { 555 struct ibmvfc_mad_common common; 556 struct srp_direct_buf buffer; 557 } __packed __aligned(8); 558 559 #define IBMVFC_MAX_CHANNELS 502 560 561 struct ibmvfc_channel_setup { 562 __be32 flags; 563 #define IBMVFC_CANCEL_CHANNELS 0x01 564 #define IBMVFC_USE_BUFFER 0x02 565 #define IBMVFC_CHANNELS_CANCELED 0x04 566 __be32 reserved; 567 __be32 num_scsi_subq_channels; 568 __be32 num_nvmeof_subq_channels; 569 __be32 num_scsi_vas_channels; 570 __be32 num_nvmeof_vas_channels; 571 struct srp_direct_buf buffer; 572 __be64 reserved2[5]; 573 __be64 channel_handles[IBMVFC_MAX_CHANNELS]; 574 } __packed __aligned(8); 575 576 struct ibmvfc_connection_info { 577 struct ibmvfc_mad_common common; 578 __be64 information_bits; 579 #define IBMVFC_NO_FC_IO_CHANNEL 0x01 580 #define IBMVFC_NO_PHYP_VAS 0x02 581 #define IBMVFC_NO_PHYP_SUBQ 0x04 582 #define IBMVFC_PHYP_DEPRECATED_SUBQ 0x08 583 #define IBMVFC_PHYP_PRESERVED_SUBQ 0x10 584 #define IBMVFC_PHYP_FULL_SUBQ 0x20 585 __be64 reserved[16]; 586 } __packed __aligned(8); 587 588 struct ibmvfc_trace_start_entry { 589 u32 xfer_len; 590 } __packed; 591 592 struct ibmvfc_trace_end_entry { 593 u16 status; 594 u16 error; 595 u8 fcp_rsp_flags; 596 u8 rsp_code; 597 u8 scsi_status; 598 u8 reserved; 599 } __packed; 600 601 struct ibmvfc_trace_entry { 602 struct ibmvfc_event *evt; 603 u32 time; 604 u32 scsi_id; 605 u32 lun; 606 u8 fmt; 607 u8 op_code; 608 u8 tmf_flags; 609 u8 type; 610 #define IBMVFC_TRC_START 0x00 611 #define IBMVFC_TRC_END 0xff 612 union { 613 struct ibmvfc_trace_start_entry start; 614 struct ibmvfc_trace_end_entry end; 615 } u; 616 } __packed __aligned(8); 617 618 enum ibmvfc_crq_formats { 619 IBMVFC_CMD_FORMAT = 0x01, 620 IBMVFC_ASYNC_EVENT = 0x02, 621 IBMVFC_MAD_FORMAT = 0x04, 622 }; 623 624 enum ibmvfc_async_event { 625 IBMVFC_AE_ELS_PLOGI = 0x0001, 626 IBMVFC_AE_ELS_LOGO = 0x0002, 627 IBMVFC_AE_ELS_PRLO = 0x0004, 628 IBMVFC_AE_SCN_NPORT = 0x0008, 629 IBMVFC_AE_SCN_GROUP = 0x0010, 630 IBMVFC_AE_SCN_DOMAIN = 0x0020, 631 IBMVFC_AE_SCN_FABRIC = 0x0040, 632 IBMVFC_AE_LINK_UP = 0x0080, 633 IBMVFC_AE_LINK_DOWN = 0x0100, 634 IBMVFC_AE_LINK_DEAD = 0x0200, 635 IBMVFC_AE_HALT = 0x0400, 636 IBMVFC_AE_RESUME = 0x0800, 637 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 638 IBMVFC_AE_FPIN = 0x2000, 639 }; 640 641 struct ibmvfc_async_desc { 642 const char *desc; 643 enum ibmvfc_async_event ae; 644 int log_level; 645 }; 646 647 struct ibmvfc_crq { 648 volatile u8 valid; 649 volatile u8 format; 650 u8 reserved[6]; 651 volatile __be64 ioba; 652 } __packed __aligned(8); 653 654 struct ibmvfc_sub_crq { 655 struct ibmvfc_crq crq; 656 __be64 reserved[2]; 657 } __packed __aligned(8); 658 659 enum ibmvfc_ae_link_state { 660 IBMVFC_AE_LS_LINK_UP = 0x01, 661 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 662 IBMVFC_AE_LS_LINK_DOWN = 0x04, 663 IBMVFC_AE_LS_LINK_DEAD = 0x08, 664 }; 665 666 enum ibmvfc_ae_fpin_status { 667 IBMVFC_AE_FPIN_LINK_CONGESTED = 0x1, 668 IBMVFC_AE_FPIN_PORT_CONGESTED = 0x2, 669 IBMVFC_AE_FPIN_PORT_CLEARED = 0x3, 670 IBMVFC_AE_FPIN_PORT_DEGRADED = 0x4, 671 }; 672 673 struct ibmvfc_async_crq { 674 volatile u8 valid; 675 u8 link_state; 676 u8 fpin_status; 677 u8 pad; 678 __be32 pad2; 679 volatile __be64 event; 680 volatile __be64 scsi_id; 681 volatile __be64 wwpn; 682 volatile __be64 node_name; 683 __be64 reserved; 684 } __packed __aligned(8); 685 686 union ibmvfc_iu { 687 struct ibmvfc_mad_common mad_common; 688 struct ibmvfc_npiv_login_mad npiv_login; 689 struct ibmvfc_npiv_logout_mad npiv_logout; 690 struct ibmvfc_discover_targets discover_targets; 691 struct ibmvfc_port_login plogi; 692 struct ibmvfc_process_login prli; 693 struct ibmvfc_move_login move_login; 694 struct ibmvfc_query_tgt query_tgt; 695 struct ibmvfc_implicit_logout implicit_logout; 696 struct ibmvfc_tmf tmf; 697 struct ibmvfc_cmd cmd; 698 struct ibmvfc_passthru_mad passthru; 699 struct ibmvfc_channel_enquiry channel_enquiry; 700 struct ibmvfc_channel_setup_mad channel_setup; 701 struct ibmvfc_connection_info connection_info; 702 } __packed __aligned(8); 703 704 enum ibmvfc_target_action { 705 IBMVFC_TGT_ACTION_NONE = 0, 706 IBMVFC_TGT_ACTION_INIT, 707 IBMVFC_TGT_ACTION_INIT_WAIT, 708 IBMVFC_TGT_ACTION_LOGOUT_RPORT, 709 IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT, 710 IBMVFC_TGT_ACTION_DEL_RPORT, 711 IBMVFC_TGT_ACTION_DELETED_RPORT, 712 IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT, 713 IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT, 714 }; 715 716 struct ibmvfc_target { 717 struct list_head queue; 718 struct ibmvfc_host *vhost; 719 u64 scsi_id; 720 u64 wwpn; 721 u64 new_scsi_id; 722 struct fc_rport *rport; 723 int target_id; 724 enum ibmvfc_target_action action; 725 int need_login; 726 int add_rport; 727 int init_retries; 728 int logo_rcvd; 729 int move_login; 730 u32 cancel_key; 731 struct ibmvfc_service_parms service_parms; 732 struct ibmvfc_service_parms service_parms_change; 733 struct fc_rport_identifiers ids; 734 void (*job_step) (struct ibmvfc_target *); 735 struct timer_list timer; 736 struct kref kref; 737 }; 738 739 /* a unit of work for the hosting partition */ 740 struct ibmvfc_event { 741 struct list_head queue_list; 742 struct list_head cancel; 743 struct ibmvfc_host *vhost; 744 struct ibmvfc_queue *queue; 745 struct ibmvfc_target *tgt; 746 struct scsi_cmnd *cmnd; 747 atomic_t free; 748 atomic_t active; 749 union ibmvfc_iu *xfer_iu; 750 void (*done)(struct ibmvfc_event *evt); 751 void (*_done)(struct ibmvfc_event *evt); 752 struct ibmvfc_crq crq; 753 union ibmvfc_iu iu; 754 union ibmvfc_iu *sync_iu; 755 struct srp_direct_buf *ext_list; 756 dma_addr_t ext_list_token; 757 struct completion comp; 758 struct completion *eh_comp; 759 struct timer_list timer; 760 u16 hwq; 761 }; 762 763 /* a pool of event structs for use */ 764 struct ibmvfc_event_pool { 765 struct ibmvfc_event *events; 766 u32 size; 767 union ibmvfc_iu *iu_storage; 768 dma_addr_t iu_token; 769 }; 770 771 enum ibmvfc_msg_fmt { 772 IBMVFC_CRQ_FMT = 0, 773 IBMVFC_ASYNC_FMT, 774 IBMVFC_SUB_CRQ_FMT, 775 }; 776 777 union ibmvfc_msgs { 778 void *handle; 779 struct ibmvfc_crq *crq; 780 struct ibmvfc_async_crq *async; 781 struct ibmvfc_sub_crq *scrq; 782 }; 783 784 struct ibmvfc_queue { 785 union ibmvfc_msgs msgs; 786 dma_addr_t msg_token; 787 enum ibmvfc_msg_fmt fmt; 788 int size, cur; 789 spinlock_t _lock; 790 spinlock_t *q_lock; 791 792 struct ibmvfc_host *vhost; 793 struct ibmvfc_event_pool evt_pool; 794 struct list_head sent; 795 struct list_head free; 796 spinlock_t l_lock; 797 798 union ibmvfc_iu cancel_rsp; 799 800 /* Sub-CRQ fields */ 801 unsigned long cookie; 802 unsigned long vios_cookie; 803 unsigned long hw_irq; 804 unsigned long irq; 805 unsigned long hwq_id; 806 char name[32]; 807 }; 808 809 struct ibmvfc_scsi_channels { 810 struct ibmvfc_queue *scrqs; 811 unsigned int active_queues; 812 }; 813 814 enum ibmvfc_host_action { 815 IBMVFC_HOST_ACTION_NONE = 0, 816 IBMVFC_HOST_ACTION_RESET, 817 IBMVFC_HOST_ACTION_REENABLE, 818 IBMVFC_HOST_ACTION_LOGO, 819 IBMVFC_HOST_ACTION_LOGO_WAIT, 820 IBMVFC_HOST_ACTION_INIT, 821 IBMVFC_HOST_ACTION_INIT_WAIT, 822 IBMVFC_HOST_ACTION_QUERY, 823 IBMVFC_HOST_ACTION_QUERY_TGTS, 824 IBMVFC_HOST_ACTION_TGT_DEL, 825 IBMVFC_HOST_ACTION_ALLOC_TGTS, 826 IBMVFC_HOST_ACTION_TGT_INIT, 827 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 828 }; 829 830 enum ibmvfc_host_state { 831 IBMVFC_NO_CRQ = 0, 832 IBMVFC_INITIALIZING, 833 IBMVFC_ACTIVE, 834 IBMVFC_HALTED, 835 IBMVFC_LINK_DOWN, 836 IBMVFC_LINK_DEAD, 837 IBMVFC_HOST_OFFLINE, 838 }; 839 840 struct ibmvfc_host { 841 char name[8]; 842 struct list_head queue; 843 struct Scsi_Host *host; 844 enum ibmvfc_host_state state; 845 enum ibmvfc_host_action action; 846 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 847 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 848 #define IBMVFC_TRACE_INDEX_MASK (IBMVFC_NUM_TRACE_ENTRIES - 1) 849 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 850 struct ibmvfc_trace_entry *trace; 851 atomic_t trace_index; 852 int num_targets; 853 struct list_head targets; 854 struct list_head purge; 855 struct device *dev; 856 struct dma_pool *sg_pool; 857 mempool_t *tgt_pool; 858 struct ibmvfc_queue crq; 859 struct ibmvfc_queue async_crq; 860 struct ibmvfc_scsi_channels scsi_scrqs; 861 struct ibmvfc_npiv_login login_info; 862 union ibmvfc_npiv_login_data *login_buf; 863 dma_addr_t login_buf_dma; 864 struct ibmvfc_channel_setup *channel_setup_buf; 865 dma_addr_t channel_setup_dma; 866 int disc_buf_sz; 867 int log_level; 868 struct ibmvfc_discover_targets_entry *disc_buf; 869 struct mutex passthru_mutex; 870 int max_vios_scsi_channels; 871 int task_set; 872 int init_retries; 873 int discovery_threads; 874 int abort_threads; 875 int client_migrated; 876 int reinit; 877 int delay_init; 878 int scan_complete; 879 int scan_timeout; 880 int logged_in; 881 int mq_enabled; 882 int using_channels; 883 int do_enquiry; 884 int client_scsi_channels; 885 int aborting_passthru; 886 int events_to_log; 887 #define IBMVFC_AE_LINKUP 0x0001 888 #define IBMVFC_AE_LINKDOWN 0x0002 889 #define IBMVFC_AE_RSCN 0x0004 890 dma_addr_t disc_buf_dma; 891 unsigned int partition_number; 892 char partition_name[97]; 893 void (*job_step) (struct ibmvfc_host *); 894 struct task_struct *work_thread; 895 struct tasklet_struct tasklet; 896 struct work_struct rport_add_work_q; 897 wait_queue_head_t init_wait_q; 898 wait_queue_head_t work_wait_q; 899 }; 900 901 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 902 903 #define tgt_dbg(t, fmt, ...) \ 904 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 905 906 #define tgt_info(t, fmt, ...) \ 907 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 908 909 #define tgt_err(t, fmt, ...) \ 910 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 911 912 #define tgt_log(t, level, fmt, ...) \ 913 do { \ 914 if ((t)->vhost->log_level >= level) \ 915 tgt_err(t, fmt, ##__VA_ARGS__); \ 916 } while (0) 917 918 #define ibmvfc_dbg(vhost, ...) \ 919 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 920 921 #define ibmvfc_log(vhost, level, ...) \ 922 do { \ 923 if ((vhost)->log_level >= level) \ 924 dev_err((vhost)->dev, ##__VA_ARGS__); \ 925 } while (0) 926 927 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 928 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 929 930 #ifdef CONFIG_SCSI_IBMVFC_TRACE 931 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 932 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 933 #else 934 #define ibmvfc_create_trace_file(kobj, attr) 0 935 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 936 #endif 937 938 #endif 939