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 #define IBMVFC_SCSI_QDEPTH 128 31 32 #define IBMVFC_DEBUG 0 33 #define IBMVFC_MAX_TARGETS 1024 34 #define IBMVFC_MAX_LUN 0xffffffff 35 #define IBMVFC_MAX_SECTORS 2048 36 #define IBMVFC_MAX_DISC_THREADS 4 37 #define IBMVFC_TGT_MEMPOOL_SZ 64 38 #define IBMVFC_MAX_CMDS_PER_LUN 64 39 #define IBMVFC_MAX_HOST_INIT_RETRIES 6 40 #define IBMVFC_MAX_TGT_INIT_RETRIES 3 41 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 42 #define IBMVFC_DEFAULT_LOG_LEVEL 2 43 #define IBMVFC_MAX_CDB_LEN 16 44 #define IBMVFC_CLS3_ERROR 0 45 #define IBMVFC_MQ 1 46 #define IBMVFC_SCSI_CHANNELS 8 47 #define IBMVFC_MAX_SCSI_QUEUES 16 48 #define IBMVFC_SCSI_HW_QUEUES 8 49 #define IBMVFC_MIG_NO_SUB_TO_CRQ 0 50 #define IBMVFC_MIG_NO_N_TO_M 0 51 52 /* 53 * Ensure we have resources for ERP and initialization: 54 * 1 for ERP 55 * 1 for initialization 56 * 1 for NPIV Logout 57 * 2 for BSG passthru 58 * 2 for each discovery thread 59 */ 60 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) 61 /* Reserved suset of events for cancelling channelized IO commands */ 62 #define IBMVFC_NUM_INTERNAL_SUBQ_REQ 4 63 64 #define IBMVFC_MAD_SUCCESS 0x00 65 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 66 #define IBMVFC_MAD_VERSION_NOT_SUPP 0xF2 67 #define IBMVFC_MAD_FAILED 0xF7 68 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 69 #define IBMVFC_MAD_CRQ_ERROR 0xEF 70 71 enum ibmvfc_crq_valid { 72 IBMVFC_CRQ_CMD_RSP = 0x80, 73 IBMVFC_CRQ_INIT_RSP = 0xC0, 74 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 75 }; 76 77 enum ibmvfc_crq_init_msg { 78 IBMVFC_CRQ_INIT = 0x01, 79 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 80 }; 81 82 enum ibmvfc_crq_xport_evts { 83 IBMVFC_PARTNER_FAILED = 0x01, 84 IBMVFC_PARTNER_DEREGISTER = 0x02, 85 IBMVFC_PARTITION_MIGRATED = 0x06, 86 }; 87 88 enum ibmvfc_cmd_status_flags { 89 IBMVFC_FABRIC_MAPPED = 0x0001, 90 IBMVFC_VIOS_FAILURE = 0x0002, 91 IBMVFC_FC_FAILURE = 0x0004, 92 IBMVFC_FC_SCSI_ERROR = 0x0008, 93 IBMVFC_HW_EVENT_LOGGED = 0x0010, 94 IBMVFC_VIOS_LOGGED = 0x0020, 95 }; 96 97 enum ibmvfc_fabric_mapped_errors { 98 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 99 IBMVFC_XPORT_FAULT = 0x0002, 100 IBMVFC_CMD_TIMEOUT = 0x0003, 101 IBMVFC_ENETDOWN = 0x0004, 102 IBMVFC_HW_FAILURE = 0x0005, 103 IBMVFC_LINK_DOWN_ERR = 0x0006, 104 IBMVFC_LINK_DEAD_ERR = 0x0007, 105 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 106 IBMVFC_XPORT_BUSY = 0x000A, 107 IBMVFC_XPORT_DEAD = 0x000B, 108 IBMVFC_CONFIG_ERROR = 0x000C, 109 IBMVFC_NAME_SERVER_FAIL = 0x000D, 110 IBMVFC_LINK_HALTED = 0x000E, 111 IBMVFC_XPORT_GENERAL = 0x8000, 112 }; 113 114 enum ibmvfc_vios_errors { 115 IBMVFC_CRQ_FAILURE = 0x0001, 116 IBMVFC_SW_FAILURE = 0x0002, 117 IBMVFC_INVALID_PARAMETER = 0x0003, 118 IBMVFC_MISSING_PARAMETER = 0x0004, 119 IBMVFC_HOST_IO_BUS = 0x0005, 120 IBMVFC_TRANS_CANCELLED = 0x0006, 121 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 122 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 123 IBMVFC_PLOGI_REQUIRED = 0x0010, 124 IBMVFC_COMMAND_FAILED = 0x8000, 125 }; 126 127 enum ibmvfc_mad_types { 128 IBMVFC_NPIV_LOGIN = 0x0001, 129 IBMVFC_DISC_TARGETS = 0x0002, 130 IBMVFC_PORT_LOGIN = 0x0004, 131 IBMVFC_PROCESS_LOGIN = 0x0008, 132 IBMVFC_QUERY_TARGET = 0x0010, 133 IBMVFC_MOVE_LOGIN = 0x0020, 134 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 135 IBMVFC_PASSTHRU = 0x0200, 136 IBMVFC_TMF_MAD = 0x0100, 137 IBMVFC_NPIV_LOGOUT = 0x0800, 138 IBMVFC_CHANNEL_ENQUIRY = 0x1000, 139 IBMVFC_CHANNEL_SETUP = 0x2000, 140 IBMVFC_CONNECTION_INFO = 0x4000, 141 }; 142 143 struct ibmvfc_mad_common { 144 __be32 version; 145 __be32 reserved; 146 __be32 opcode; 147 __be16 status; 148 __be16 length; 149 __be64 tag; 150 } __packed __aligned(8); 151 152 struct ibmvfc_npiv_login_mad { 153 struct ibmvfc_mad_common common; 154 struct srp_direct_buf buffer; 155 } __packed __aligned(8); 156 157 struct ibmvfc_npiv_logout_mad { 158 struct ibmvfc_mad_common common; 159 } __packed __aligned(8); 160 161 #define IBMVFC_MAX_NAME 256 162 163 struct ibmvfc_npiv_login { 164 __be32 ostype; 165 #define IBMVFC_OS_LINUX 0x02 166 __be32 pad; 167 __be64 max_dma_len; 168 __be32 max_payload; 169 __be32 max_response; 170 __be32 partition_num; 171 __be32 vfc_frame_version; 172 __be16 fcp_version; 173 __be16 flags; 174 #define IBMVFC_CLIENT_MIGRATED 0x01 175 #define IBMVFC_FLUSH_ON_HALT 0x02 176 __be32 max_cmds; 177 __be64 capabilities; 178 #define IBMVFC_CAN_MIGRATE 0x01 179 #define IBMVFC_CAN_USE_CHANNELS 0x02 180 #define IBMVFC_CAN_HANDLE_FPIN 0x04 181 #define IBMVFC_CAN_USE_MAD_VERSION 0x08 182 #define IBMVFC_CAN_SEND_VF_WWPN 0x10 183 __be64 node_name; 184 struct srp_direct_buf async; 185 u8 partition_name[IBMVFC_MAX_NAME]; 186 u8 device_name[IBMVFC_MAX_NAME]; 187 u8 drc_name[IBMVFC_MAX_NAME]; 188 __be64 reserved2[2]; 189 } __packed __aligned(8); 190 191 struct ibmvfc_common_svc_parms { 192 __be16 fcph_version; 193 __be16 b2b_credit; 194 __be16 features; 195 __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 196 __be32 ratov; 197 __be32 edtov; 198 } __packed __aligned(4); 199 200 struct ibmvfc_service_parms { 201 struct ibmvfc_common_svc_parms common; 202 u8 port_name[8]; 203 u8 node_name[8]; 204 __be32 class1_parms[4]; 205 __be32 class2_parms[4]; 206 __be32 class3_parms[4]; 207 __be32 obsolete[4]; 208 __be32 vendor_version[4]; 209 __be32 services_avail[2]; 210 __be32 ext_len; 211 __be32 reserved[30]; 212 __be32 clk_sync_qos[2]; 213 __be32 reserved2; 214 } __packed __aligned(4); 215 216 struct ibmvfc_npiv_login_resp { 217 __be32 version; 218 __be16 status; 219 __be16 error; 220 __be32 flags; 221 #define IBMVFC_NATIVE_FC 0x01 222 __be32 reserved; 223 __be64 capabilities; 224 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 225 #define IBMVFC_CAN_SUPPRESS_ABTS 0x10 226 #define IBMVFC_MAD_VERSION_CAP 0x20 227 #define IBMVFC_HANDLE_VF_WWPN 0x40 228 #define IBMVFC_CAN_SUPPORT_CHANNELS 0x80 229 __be32 max_cmds; 230 __be32 scsi_id_sz; 231 __be64 max_dma_len; 232 __be64 scsi_id; 233 __be64 port_name; 234 __be64 node_name; 235 __be64 link_speed; 236 u8 partition_name[IBMVFC_MAX_NAME]; 237 u8 device_name[IBMVFC_MAX_NAME]; 238 u8 port_loc_code[IBMVFC_MAX_NAME]; 239 u8 drc_name[IBMVFC_MAX_NAME]; 240 struct ibmvfc_service_parms service_parms; 241 __be64 reserved2; 242 } __packed __aligned(8); 243 244 union ibmvfc_npiv_login_data { 245 struct ibmvfc_npiv_login login; 246 struct ibmvfc_npiv_login_resp resp; 247 } __packed __aligned(8); 248 249 struct ibmvfc_discover_targets_entry { 250 __be32 scsi_id; 251 __be32 pad; 252 __be64 wwpn; 253 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 254 } __packed __aligned(8); 255 256 struct ibmvfc_discover_targets { 257 struct ibmvfc_mad_common common; 258 struct srp_direct_buf buffer; 259 __be32 flags; 260 #define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST 0x02 261 __be16 status; 262 __be16 error; 263 __be32 bufflen; 264 __be32 num_avail; 265 __be32 num_written; 266 __be64 reserved[2]; 267 } __packed __aligned(8); 268 269 enum ibmvfc_fc_reason { 270 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 271 IBMVFC_INVALID_VERSION = 0x02, 272 IBMVFC_LOGICAL_ERROR = 0x03, 273 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 274 IBMVFC_LOGICAL_BUSY = 0x05, 275 IBMVFC_PROTOCOL_ERROR = 0x07, 276 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 277 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 278 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 279 IBMVFC_CMD_IN_PROGRESS = 0x0E, 280 IBMVFC_VENDOR_SPECIFIC = 0xFF, 281 }; 282 283 enum ibmvfc_fc_type { 284 IBMVFC_FABRIC_REJECT = 0x01, 285 IBMVFC_PORT_REJECT = 0x02, 286 IBMVFC_LS_REJECT = 0x03, 287 IBMVFC_FABRIC_BUSY = 0x04, 288 IBMVFC_PORT_BUSY = 0x05, 289 IBMVFC_BASIC_REJECT = 0x06, 290 }; 291 292 enum ibmvfc_gs_explain { 293 IBMVFC_PORT_NAME_NOT_REG = 0x02, 294 }; 295 296 struct ibmvfc_port_login { 297 struct ibmvfc_mad_common common; 298 __be64 scsi_id; 299 __be16 reserved; 300 __be16 fc_service_class; 301 __be32 blksz; 302 __be32 hdr_per_blk; 303 __be16 status; 304 __be16 error; /* also fc_reason */ 305 __be16 fc_explain; 306 __be16 fc_type; 307 __be32 reserved2; 308 struct ibmvfc_service_parms service_parms; 309 struct ibmvfc_service_parms service_parms_change; 310 __be64 target_wwpn; 311 __be64 reserved3[2]; 312 } __packed __aligned(8); 313 314 struct ibmvfc_move_login { 315 struct ibmvfc_mad_common common; 316 __be64 old_scsi_id; 317 __be64 new_scsi_id; 318 __be64 wwpn; 319 __be64 node_name; 320 __be32 flags; 321 #define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED 0x01 322 #define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED 0x02 323 #define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED 0x04 324 __be32 reserved; 325 struct ibmvfc_service_parms service_parms; 326 struct ibmvfc_service_parms service_parms_change; 327 __be32 reserved2; 328 __be16 service_class; 329 __be16 vios_flags; 330 #define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER 0x01 331 __be64 reserved3; 332 } __packed __aligned(8); 333 334 struct ibmvfc_prli_svc_parms { 335 u8 type; 336 #define IBMVFC_SCSI_FCP_TYPE 0x08 337 u8 type_ext; 338 __be16 flags; 339 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 340 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 341 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 342 __be32 orig_pa; 343 __be32 resp_pa; 344 __be32 service_parms; 345 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 346 #define IBMVFC_PRLI_RETRY 0x00000100 347 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 348 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 349 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 350 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 351 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 352 } __packed __aligned(4); 353 354 struct ibmvfc_process_login { 355 struct ibmvfc_mad_common common; 356 __be64 scsi_id; 357 struct ibmvfc_prli_svc_parms parms; 358 u8 reserved[48]; 359 __be16 status; 360 __be16 error; /* also fc_reason */ 361 __be32 reserved2; 362 __be64 target_wwpn; 363 __be64 reserved3[2]; 364 } __packed __aligned(8); 365 366 struct ibmvfc_query_tgt { 367 struct ibmvfc_mad_common common; 368 __be64 wwpn; 369 __be64 scsi_id; 370 __be16 status; 371 __be16 error; 372 __be16 fc_explain; 373 __be16 fc_type; 374 __be64 reserved[2]; 375 } __packed __aligned(8); 376 377 struct ibmvfc_implicit_logout { 378 struct ibmvfc_mad_common common; 379 __be64 old_scsi_id; 380 __be64 reserved[2]; 381 } __packed __aligned(8); 382 383 struct ibmvfc_tmf { 384 struct ibmvfc_mad_common common; 385 __be64 scsi_id; 386 struct scsi_lun lun; 387 __be32 flags; 388 #define IBMVFC_TMF_ABORT_TASK 0x02 389 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 390 #define IBMVFC_TMF_LUN_RESET 0x10 391 #define IBMVFC_TMF_TGT_RESET 0x20 392 #define IBMVFC_TMF_LUA_VALID 0x40 393 #define IBMVFC_TMF_SUPPRESS_ABTS 0x80 394 __be32 cancel_key; 395 __be32 my_cancel_key; 396 __be32 pad; 397 __be64 target_wwpn; 398 __be64 task_tag; 399 __be64 reserved[2]; 400 } __packed __aligned(8); 401 402 enum ibmvfc_fcp_rsp_info_codes { 403 RSP_NO_FAILURE = 0x00, 404 RSP_TMF_REJECTED = 0x04, 405 RSP_TMF_FAILED = 0x05, 406 RSP_TMF_INVALID_LUN = 0x09, 407 }; 408 409 struct ibmvfc_fcp_rsp_info { 410 u8 reserved[3]; 411 u8 rsp_code; 412 u8 reserved2[4]; 413 } __packed __aligned(2); 414 415 enum ibmvfc_fcp_rsp_flags { 416 FCP_BIDI_RSP = 0x80, 417 FCP_BIDI_READ_RESID_UNDER = 0x40, 418 FCP_BIDI_READ_RESID_OVER = 0x20, 419 FCP_CONF_REQ = 0x10, 420 FCP_RESID_UNDER = 0x08, 421 FCP_RESID_OVER = 0x04, 422 FCP_SNS_LEN_VALID = 0x02, 423 FCP_RSP_LEN_VALID = 0x01, 424 }; 425 426 union ibmvfc_fcp_rsp_data { 427 struct ibmvfc_fcp_rsp_info info; 428 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 429 } __packed __aligned(8); 430 431 struct ibmvfc_fcp_rsp { 432 __be64 reserved; 433 __be16 retry_delay_timer; 434 u8 flags; 435 u8 scsi_status; 436 __be32 fcp_resid; 437 __be32 fcp_sense_len; 438 __be32 fcp_rsp_len; 439 union ibmvfc_fcp_rsp_data data; 440 } __packed __aligned(8); 441 442 enum ibmvfc_cmd_flags { 443 IBMVFC_SCATTERLIST = 0x0001, 444 IBMVFC_NO_MEM_DESC = 0x0002, 445 IBMVFC_READ = 0x0004, 446 IBMVFC_WRITE = 0x0008, 447 IBMVFC_TMF = 0x0080, 448 IBMVFC_CLASS_3_ERR = 0x0100, 449 }; 450 451 enum ibmvfc_fc_task_attr { 452 IBMVFC_SIMPLE_TASK = 0x00, 453 IBMVFC_HEAD_OF_QUEUE = 0x01, 454 IBMVFC_ORDERED_TASK = 0x02, 455 IBMVFC_ACA_TASK = 0x04, 456 }; 457 458 enum ibmvfc_fc_tmf_flags { 459 IBMVFC_ABORT_TASK_SET = 0x02, 460 IBMVFC_LUN_RESET = 0x10, 461 IBMVFC_TARGET_RESET = 0x20, 462 }; 463 464 struct ibmvfc_fcp_cmd_iu { 465 struct scsi_lun lun; 466 u8 crn; 467 u8 pri_task_attr; 468 u8 tmf_flags; 469 u8 add_cdb_len; 470 #define IBMVFC_RDDATA 0x02 471 #define IBMVFC_WRDATA 0x01 472 u8 cdb[IBMVFC_MAX_CDB_LEN]; 473 __be32 xfer_len; 474 } __packed __aligned(4); 475 476 struct ibmvfc_cmd { 477 __be64 task_tag; 478 __be32 frame_type; 479 __be32 payload_len; 480 __be32 resp_len; 481 __be32 adapter_resid; 482 __be16 status; 483 __be16 error; 484 __be16 flags; 485 __be16 response_flags; 486 #define IBMVFC_ADAPTER_RESID_VALID 0x01 487 __be32 cancel_key; 488 __be32 exchange_id; 489 struct srp_direct_buf ext_func; 490 struct srp_direct_buf ioba; 491 struct srp_direct_buf resp; 492 __be64 correlation; 493 __be64 tgt_scsi_id; 494 __be64 tag; 495 __be64 target_wwpn; 496 __be64 reserved3; 497 union { 498 struct { 499 struct ibmvfc_fcp_cmd_iu iu; 500 struct ibmvfc_fcp_rsp rsp; 501 } v1; 502 struct { 503 __be64 reserved4; 504 struct ibmvfc_fcp_cmd_iu iu; 505 struct ibmvfc_fcp_rsp rsp; 506 } v2; 507 }; 508 } __packed __aligned(8); 509 510 struct ibmvfc_passthru_fc_iu { 511 __be32 payload[7]; 512 #define IBMVFC_ADISC 0x52000000 513 __be32 response[7]; 514 }; 515 516 struct ibmvfc_passthru_iu { 517 __be64 task_tag; 518 __be32 cmd_len; 519 __be32 rsp_len; 520 __be16 status; 521 __be16 error; 522 __be32 flags; 523 #define IBMVFC_FC_ELS 0x01 524 #define IBMVFC_FC_CT_IU 0x02 525 __be32 cancel_key; 526 #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 527 #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 528 __be32 reserved; 529 struct srp_direct_buf cmd; 530 struct srp_direct_buf rsp; 531 __be64 correlation; 532 __be64 scsi_id; 533 __be64 tag; 534 __be64 target_wwpn; 535 __be64 reserved2[2]; 536 } __packed __aligned(8); 537 538 struct ibmvfc_passthru_mad { 539 struct ibmvfc_mad_common common; 540 struct srp_direct_buf cmd_ioba; 541 struct ibmvfc_passthru_iu iu; 542 struct ibmvfc_passthru_fc_iu fc_iu; 543 } __packed __aligned(8); 544 545 struct ibmvfc_channel_enquiry { 546 struct ibmvfc_mad_common common; 547 __be32 flags; 548 #define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT 0x01 549 #define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG 0x02 550 #define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT 0x04 551 __be32 num_scsi_subq_channels; 552 __be32 num_nvmeof_subq_channels; 553 __be32 num_scsi_vas_channels; 554 __be32 num_nvmeof_vas_channels; 555 } __packed __aligned(8); 556 557 struct ibmvfc_channel_setup_mad { 558 struct ibmvfc_mad_common common; 559 struct srp_direct_buf buffer; 560 } __packed __aligned(8); 561 562 #define IBMVFC_MAX_CHANNELS 502 563 564 struct ibmvfc_channel_setup { 565 __be32 flags; 566 #define IBMVFC_CANCEL_CHANNELS 0x01 567 #define IBMVFC_USE_BUFFER 0x02 568 #define IBMVFC_CHANNELS_CANCELED 0x04 569 __be32 reserved; 570 __be32 num_scsi_subq_channels; 571 __be32 num_nvmeof_subq_channels; 572 __be32 num_scsi_vas_channels; 573 __be32 num_nvmeof_vas_channels; 574 struct srp_direct_buf buffer; 575 __be64 reserved2[5]; 576 __be64 channel_handles[IBMVFC_MAX_CHANNELS]; 577 } __packed __aligned(8); 578 579 struct ibmvfc_connection_info { 580 struct ibmvfc_mad_common common; 581 __be64 information_bits; 582 #define IBMVFC_NO_FC_IO_CHANNEL 0x01 583 #define IBMVFC_NO_PHYP_VAS 0x02 584 #define IBMVFC_NO_PHYP_SUBQ 0x04 585 #define IBMVFC_PHYP_DEPRECATED_SUBQ 0x08 586 #define IBMVFC_PHYP_PRESERVED_SUBQ 0x10 587 #define IBMVFC_PHYP_FULL_SUBQ 0x20 588 __be64 reserved[16]; 589 } __packed __aligned(8); 590 591 struct ibmvfc_trace_start_entry { 592 u32 xfer_len; 593 } __packed; 594 595 struct ibmvfc_trace_end_entry { 596 u16 status; 597 u16 error; 598 u8 fcp_rsp_flags; 599 u8 rsp_code; 600 u8 scsi_status; 601 u8 reserved; 602 } __packed; 603 604 struct ibmvfc_trace_entry { 605 struct ibmvfc_event *evt; 606 u32 time; 607 u32 scsi_id; 608 u32 lun; 609 u8 fmt; 610 u8 op_code; 611 u8 tmf_flags; 612 u8 type; 613 #define IBMVFC_TRC_START 0x00 614 #define IBMVFC_TRC_END 0xff 615 union { 616 struct ibmvfc_trace_start_entry start; 617 struct ibmvfc_trace_end_entry end; 618 } u; 619 } __packed __aligned(8); 620 621 enum ibmvfc_crq_formats { 622 IBMVFC_CMD_FORMAT = 0x01, 623 IBMVFC_ASYNC_EVENT = 0x02, 624 IBMVFC_MAD_FORMAT = 0x04, 625 }; 626 627 enum ibmvfc_async_event { 628 IBMVFC_AE_ELS_PLOGI = 0x0001, 629 IBMVFC_AE_ELS_LOGO = 0x0002, 630 IBMVFC_AE_ELS_PRLO = 0x0004, 631 IBMVFC_AE_SCN_NPORT = 0x0008, 632 IBMVFC_AE_SCN_GROUP = 0x0010, 633 IBMVFC_AE_SCN_DOMAIN = 0x0020, 634 IBMVFC_AE_SCN_FABRIC = 0x0040, 635 IBMVFC_AE_LINK_UP = 0x0080, 636 IBMVFC_AE_LINK_DOWN = 0x0100, 637 IBMVFC_AE_LINK_DEAD = 0x0200, 638 IBMVFC_AE_HALT = 0x0400, 639 IBMVFC_AE_RESUME = 0x0800, 640 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 641 IBMVFC_AE_FPIN = 0x2000, 642 }; 643 644 struct ibmvfc_async_desc { 645 const char *desc; 646 enum ibmvfc_async_event ae; 647 int log_level; 648 }; 649 650 struct ibmvfc_crq { 651 volatile u8 valid; 652 volatile u8 format; 653 u8 reserved[6]; 654 volatile __be64 ioba; 655 } __packed __aligned(8); 656 657 struct ibmvfc_sub_crq { 658 struct ibmvfc_crq crq; 659 __be64 reserved[2]; 660 } __packed __aligned(8); 661 662 enum ibmvfc_ae_link_state { 663 IBMVFC_AE_LS_LINK_UP = 0x01, 664 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 665 IBMVFC_AE_LS_LINK_DOWN = 0x04, 666 IBMVFC_AE_LS_LINK_DEAD = 0x08, 667 }; 668 669 enum ibmvfc_ae_fpin_status { 670 IBMVFC_AE_FPIN_LINK_CONGESTED = 0x1, 671 IBMVFC_AE_FPIN_PORT_CONGESTED = 0x2, 672 IBMVFC_AE_FPIN_PORT_CLEARED = 0x3, 673 IBMVFC_AE_FPIN_PORT_DEGRADED = 0x4, 674 }; 675 676 struct ibmvfc_async_crq { 677 volatile u8 valid; 678 u8 link_state; 679 u8 fpin_status; 680 u8 pad; 681 __be32 pad2; 682 volatile __be64 event; 683 volatile __be64 scsi_id; 684 volatile __be64 wwpn; 685 volatile __be64 node_name; 686 __be64 reserved; 687 } __packed __aligned(8); 688 689 union ibmvfc_iu { 690 struct ibmvfc_mad_common mad_common; 691 struct ibmvfc_npiv_login_mad npiv_login; 692 struct ibmvfc_npiv_logout_mad npiv_logout; 693 struct ibmvfc_discover_targets discover_targets; 694 struct ibmvfc_port_login plogi; 695 struct ibmvfc_process_login prli; 696 struct ibmvfc_move_login move_login; 697 struct ibmvfc_query_tgt query_tgt; 698 struct ibmvfc_implicit_logout implicit_logout; 699 struct ibmvfc_tmf tmf; 700 struct ibmvfc_cmd cmd; 701 struct ibmvfc_passthru_mad passthru; 702 struct ibmvfc_channel_enquiry channel_enquiry; 703 struct ibmvfc_channel_setup_mad channel_setup; 704 struct ibmvfc_connection_info connection_info; 705 } __packed __aligned(8); 706 707 enum ibmvfc_target_action { 708 IBMVFC_TGT_ACTION_NONE = 0, 709 IBMVFC_TGT_ACTION_INIT, 710 IBMVFC_TGT_ACTION_INIT_WAIT, 711 IBMVFC_TGT_ACTION_LOGOUT_RPORT, 712 IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT, 713 IBMVFC_TGT_ACTION_DEL_RPORT, 714 IBMVFC_TGT_ACTION_DELETED_RPORT, 715 IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT, 716 IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT, 717 }; 718 719 enum ibmvfc_protocol { 720 IBMVFC_PROTO_SCSI = 0, 721 IBMVFC_PROTO_NVME = 1, 722 }; 723 724 struct ibmvfc_target { 725 struct list_head queue; 726 struct ibmvfc_host *vhost; 727 enum ibmvfc_protocol protocol; 728 u64 scsi_id; 729 u64 wwpn; 730 u64 new_scsi_id; 731 struct fc_rport *rport; 732 int target_id; 733 enum ibmvfc_target_action action; 734 int need_login; 735 int add_rport; 736 int init_retries; 737 int logo_rcvd; 738 int move_login; 739 u32 cancel_key; 740 struct ibmvfc_service_parms service_parms; 741 struct ibmvfc_service_parms service_parms_change; 742 struct fc_rport_identifiers ids; 743 void (*job_step) (struct ibmvfc_target *); 744 struct timer_list timer; 745 struct kref kref; 746 }; 747 748 /* a unit of work for the hosting partition */ 749 struct ibmvfc_event { 750 struct list_head queue_list; 751 struct list_head cancel; 752 struct ibmvfc_host *vhost; 753 struct ibmvfc_queue *queue; 754 struct ibmvfc_target *tgt; 755 struct scsi_cmnd *cmnd; 756 atomic_t free; 757 atomic_t active; 758 union ibmvfc_iu *xfer_iu; 759 void (*done)(struct ibmvfc_event *evt); 760 void (*_done)(struct ibmvfc_event *evt); 761 struct ibmvfc_crq crq; 762 union ibmvfc_iu iu; 763 union ibmvfc_iu *sync_iu; 764 struct srp_direct_buf *ext_list; 765 dma_addr_t ext_list_token; 766 struct completion comp; 767 struct completion *eh_comp; 768 struct timer_list timer; 769 u16 hwq; 770 u8 reserved; 771 }; 772 773 /* a pool of event structs for use */ 774 struct ibmvfc_event_pool { 775 struct ibmvfc_event *events; 776 u32 size; 777 union ibmvfc_iu *iu_storage; 778 dma_addr_t iu_token; 779 }; 780 781 enum ibmvfc_msg_fmt { 782 IBMVFC_CRQ_FMT = 0, 783 IBMVFC_ASYNC_FMT, 784 IBMVFC_SUB_CRQ_FMT, 785 }; 786 787 union ibmvfc_msgs { 788 void *handle; 789 struct ibmvfc_crq *crq; 790 struct ibmvfc_async_crq *async; 791 struct ibmvfc_sub_crq *scrq; 792 }; 793 794 struct ibmvfc_queue { 795 union ibmvfc_msgs msgs; 796 dma_addr_t msg_token; 797 enum ibmvfc_msg_fmt fmt; 798 int size, cur; 799 spinlock_t _lock; 800 spinlock_t *q_lock; 801 802 struct ibmvfc_host *vhost; 803 struct ibmvfc_event_pool evt_pool; 804 struct list_head sent; 805 struct list_head free; 806 u16 total_depth; 807 u16 evt_depth; 808 u16 reserved_depth; 809 u16 evt_free; 810 u16 reserved_free; 811 spinlock_t l_lock; 812 813 union ibmvfc_iu cancel_rsp; 814 815 /* Sub-CRQ fields */ 816 unsigned long cookie; 817 unsigned long vios_cookie; 818 unsigned long hw_irq; 819 unsigned long irq; 820 unsigned long hwq_id; 821 char name[32]; 822 irq_handler_t handler; 823 }; 824 825 struct ibmvfc_channels { 826 struct ibmvfc_queue *scrqs; 827 enum ibmvfc_protocol protocol; 828 unsigned int active_queues; 829 unsigned int desired_queues; 830 unsigned int max_queues; 831 int disc_buf_sz; 832 struct ibmvfc_discover_targets_entry *disc_buf; 833 dma_addr_t disc_buf_dma; 834 }; 835 836 enum ibmvfc_host_action { 837 IBMVFC_HOST_ACTION_NONE = 0, 838 IBMVFC_HOST_ACTION_RESET, 839 IBMVFC_HOST_ACTION_REENABLE, 840 IBMVFC_HOST_ACTION_LOGO, 841 IBMVFC_HOST_ACTION_LOGO_WAIT, 842 IBMVFC_HOST_ACTION_INIT, 843 IBMVFC_HOST_ACTION_INIT_WAIT, 844 IBMVFC_HOST_ACTION_QUERY, 845 IBMVFC_HOST_ACTION_QUERY_TGTS, 846 IBMVFC_HOST_ACTION_TGT_DEL, 847 IBMVFC_HOST_ACTION_ALLOC_TGTS, 848 IBMVFC_HOST_ACTION_TGT_INIT, 849 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 850 }; 851 852 enum ibmvfc_host_state { 853 IBMVFC_NO_CRQ = 0, 854 IBMVFC_INITIALIZING, 855 IBMVFC_ACTIVE, 856 IBMVFC_HALTED, 857 IBMVFC_LINK_DOWN, 858 IBMVFC_LINK_DEAD, 859 IBMVFC_HOST_OFFLINE, 860 }; 861 862 struct ibmvfc_host { 863 char name[8]; 864 struct list_head queue; 865 struct Scsi_Host *host; 866 enum ibmvfc_host_state state; 867 enum ibmvfc_host_action action; 868 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 869 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 870 #define IBMVFC_TRACE_INDEX_MASK (IBMVFC_NUM_TRACE_ENTRIES - 1) 871 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 872 struct ibmvfc_trace_entry *trace; 873 atomic_t trace_index; 874 int num_targets; 875 struct list_head targets; 876 struct list_head purge; 877 struct device *dev; 878 struct dma_pool *sg_pool; 879 mempool_t *tgt_pool; 880 struct ibmvfc_queue crq; 881 struct ibmvfc_queue async_crq; 882 struct ibmvfc_channels scsi_scrqs; 883 struct ibmvfc_npiv_login login_info; 884 union ibmvfc_npiv_login_data *login_buf; 885 dma_addr_t login_buf_dma; 886 struct ibmvfc_channel_setup *channel_setup_buf; 887 dma_addr_t channel_setup_dma; 888 int log_level; 889 struct mutex passthru_mutex; 890 unsigned int max_vios_scsi_channels; 891 int task_set; 892 int init_retries; 893 int discovery_threads; 894 int abort_threads; 895 unsigned int client_migrated:1; 896 unsigned int reinit:1; 897 unsigned int delay_init:1; 898 unsigned int logged_in:1; 899 unsigned int mq_enabled:1; 900 unsigned int using_channels:1; 901 unsigned int do_enquiry:1; 902 unsigned int aborting_passthru:1; 903 unsigned int scan_complete:1; 904 int scan_timeout; 905 int events_to_log; 906 #define IBMVFC_AE_LINKUP 0x0001 907 #define IBMVFC_AE_LINKDOWN 0x0002 908 #define IBMVFC_AE_RSCN 0x0004 909 unsigned int partition_number; 910 char partition_name[97]; 911 void (*job_step) (struct ibmvfc_host *); 912 struct task_struct *work_thread; 913 struct tasklet_struct tasklet; 914 struct work_struct rport_add_work_q; 915 wait_queue_head_t init_wait_q; 916 wait_queue_head_t work_wait_q; 917 }; 918 919 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 920 921 #define tgt_dbg(t, fmt, ...) \ 922 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 923 924 #define tgt_info(t, fmt, ...) \ 925 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 926 927 #define tgt_err(t, fmt, ...) \ 928 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 929 930 #define tgt_log(t, level, fmt, ...) \ 931 do { \ 932 if ((t)->vhost->log_level >= level) \ 933 tgt_err(t, fmt, ##__VA_ARGS__); \ 934 } while (0) 935 936 #define ibmvfc_dbg(vhost, ...) \ 937 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 938 939 #define ibmvfc_log(vhost, level, ...) \ 940 do { \ 941 if ((vhost)->log_level >= level) \ 942 dev_err((vhost)->dev, ##__VA_ARGS__); \ 943 } while (0) 944 945 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 946 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 947 948 #ifdef CONFIG_SCSI_IBMVFC_TRACE 949 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 950 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 951 #else 952 #define ibmvfc_create_trace_file(kobj, attr) 0 953 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 954 #endif 955 956 #endif 957