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