1 /* 2 * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter 3 * 4 * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation 5 * 6 * Copyright (C) IBM Corporation, 2008 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 #ifndef _IBMVFC_H 25 #define _IBMVFC_H 26 27 #include <linux/list.h> 28 #include <linux/types.h> 29 #include "viosrp.h" 30 31 #define IBMVFC_NAME "ibmvfc" 32 #define IBMVFC_DRIVER_VERSION "1.0.7" 33 #define IBMVFC_DRIVER_DATE "(October 16, 2009)" 34 35 #define IBMVFC_DEFAULT_TIMEOUT 60 36 #define IBMVFC_ADISC_CANCEL_TIMEOUT 45 37 #define IBMVFC_ADISC_TIMEOUT 15 38 #define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT \ 39 (IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT) 40 #define IBMVFC_INIT_TIMEOUT 120 41 #define IBMVFC_MAX_REQUESTS_DEFAULT 100 42 43 #define IBMVFC_DEBUG 0 44 #define IBMVFC_MAX_TARGETS 1024 45 #define IBMVFC_MAX_LUN 0xffffffff 46 #define IBMVFC_MAX_SECTORS 0xffffu 47 #define IBMVFC_MAX_DISC_THREADS 4 48 #define IBMVFC_TGT_MEMPOOL_SZ 64 49 #define IBMVFC_MAX_CMDS_PER_LUN 64 50 #define IBMVFC_MAX_HOST_INIT_RETRIES 6 51 #define IBMVFC_MAX_TGT_INIT_RETRIES 3 52 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 53 #define IBMVFC_DEFAULT_LOG_LEVEL 2 54 #define IBMVFC_MAX_CDB_LEN 16 55 56 /* 57 * Ensure we have resources for ERP and initialization: 58 * 1 for ERP 59 * 1 for initialization 60 * 1 for NPIV Logout 61 * 2 for BSG passthru 62 * 2 for each discovery thread 63 */ 64 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) 65 66 #define IBMVFC_MAD_SUCCESS 0x00 67 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 68 #define IBMVFC_MAD_FAILED 0xF7 69 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 70 #define IBMVFC_MAD_CRQ_ERROR 0xEF 71 72 enum ibmvfc_crq_valid { 73 IBMVFC_CRQ_CMD_RSP = 0x80, 74 IBMVFC_CRQ_INIT_RSP = 0xC0, 75 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 76 }; 77 78 enum ibmvfc_crq_format { 79 IBMVFC_CRQ_INIT = 0x01, 80 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 81 IBMVFC_PARTITION_MIGRATED = 0x06, 82 }; 83 84 enum ibmvfc_cmd_status_flags { 85 IBMVFC_FABRIC_MAPPED = 0x0001, 86 IBMVFC_VIOS_FAILURE = 0x0002, 87 IBMVFC_FC_FAILURE = 0x0004, 88 IBMVFC_FC_SCSI_ERROR = 0x0008, 89 IBMVFC_HW_EVENT_LOGGED = 0x0010, 90 IBMVFC_VIOS_LOGGED = 0x0020, 91 }; 92 93 enum ibmvfc_fabric_mapped_errors { 94 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 95 IBMVFC_XPORT_FAULT = 0x0002, 96 IBMVFC_CMD_TIMEOUT = 0x0003, 97 IBMVFC_ENETDOWN = 0x0004, 98 IBMVFC_HW_FAILURE = 0x0005, 99 IBMVFC_LINK_DOWN_ERR = 0x0006, 100 IBMVFC_LINK_DEAD_ERR = 0x0007, 101 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 102 IBMVFC_XPORT_BUSY = 0x000A, 103 IBMVFC_XPORT_DEAD = 0x000B, 104 IBMVFC_CONFIG_ERROR = 0x000C, 105 IBMVFC_NAME_SERVER_FAIL = 0x000D, 106 IBMVFC_LINK_HALTED = 0x000E, 107 IBMVFC_XPORT_GENERAL = 0x8000, 108 }; 109 110 enum ibmvfc_vios_errors { 111 IBMVFC_CRQ_FAILURE = 0x0001, 112 IBMVFC_SW_FAILURE = 0x0002, 113 IBMVFC_INVALID_PARAMETER = 0x0003, 114 IBMVFC_MISSING_PARAMETER = 0x0004, 115 IBMVFC_HOST_IO_BUS = 0x0005, 116 IBMVFC_TRANS_CANCELLED = 0x0006, 117 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 118 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 119 IBMVFC_PLOGI_REQUIRED = 0x0010, 120 IBMVFC_COMMAND_FAILED = 0x8000, 121 }; 122 123 enum ibmvfc_mad_types { 124 IBMVFC_NPIV_LOGIN = 0x0001, 125 IBMVFC_DISC_TARGETS = 0x0002, 126 IBMVFC_PORT_LOGIN = 0x0004, 127 IBMVFC_PROCESS_LOGIN = 0x0008, 128 IBMVFC_QUERY_TARGET = 0x0010, 129 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 130 IBMVFC_PASSTHRU = 0x0200, 131 IBMVFC_TMF_MAD = 0x0100, 132 IBMVFC_NPIV_LOGOUT = 0x0800, 133 }; 134 135 struct ibmvfc_mad_common { 136 u32 version; 137 u32 reserved; 138 u32 opcode; 139 u16 status; 140 u16 length; 141 u64 tag; 142 }__attribute__((packed, aligned (8))); 143 144 struct ibmvfc_npiv_login_mad { 145 struct ibmvfc_mad_common common; 146 struct srp_direct_buf buffer; 147 }__attribute__((packed, aligned (8))); 148 149 struct ibmvfc_npiv_logout_mad { 150 struct ibmvfc_mad_common common; 151 }__attribute__((packed, aligned (8))); 152 153 #define IBMVFC_MAX_NAME 256 154 155 struct ibmvfc_npiv_login { 156 u32 ostype; 157 #define IBMVFC_OS_LINUX 0x02 158 u32 pad; 159 u64 max_dma_len; 160 u32 max_payload; 161 u32 max_response; 162 u32 partition_num; 163 u32 vfc_frame_version; 164 u16 fcp_version; 165 u16 flags; 166 #define IBMVFC_CLIENT_MIGRATED 0x01 167 #define IBMVFC_FLUSH_ON_HALT 0x02 168 u32 max_cmds; 169 u64 capabilities; 170 #define IBMVFC_CAN_MIGRATE 0x01 171 u64 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 u64 reserved2[2]; 177 }__attribute__((packed, aligned (8))); 178 179 struct ibmvfc_common_svc_parms { 180 u16 fcph_version; 181 u16 b2b_credit; 182 u16 features; 183 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 184 u32 ratov; 185 u32 edtov; 186 }__attribute__((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 u32 class1_parms[4]; 193 u32 class2_parms[4]; 194 u32 class3_parms[4]; 195 u32 obsolete[4]; 196 u32 vendor_version[4]; 197 u32 services_avail[2]; 198 u32 ext_len; 199 u32 reserved[30]; 200 u32 clk_sync_qos[2]; 201 }__attribute__((packed, aligned (4))); 202 203 struct ibmvfc_npiv_login_resp { 204 u32 version; 205 u16 status; 206 u16 error; 207 u32 flags; 208 #define IBMVFC_NATIVE_FC 0x01 209 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 210 u32 reserved; 211 u64 capabilities; 212 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 213 u32 max_cmds; 214 u32 scsi_id_sz; 215 u64 max_dma_len; 216 u64 scsi_id; 217 u64 port_name; 218 u64 node_name; 219 u64 link_speed; 220 u8 partition_name[IBMVFC_MAX_NAME]; 221 u8 device_name[IBMVFC_MAX_NAME]; 222 u8 port_loc_code[IBMVFC_MAX_NAME]; 223 u8 drc_name[IBMVFC_MAX_NAME]; 224 struct ibmvfc_service_parms service_parms; 225 u64 reserved2; 226 }__attribute__((packed, aligned (8))); 227 228 union ibmvfc_npiv_login_data { 229 struct ibmvfc_npiv_login login; 230 struct ibmvfc_npiv_login_resp resp; 231 }__attribute__((packed, aligned (8))); 232 233 struct ibmvfc_discover_targets_buf { 234 u32 scsi_id[1]; 235 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 236 }; 237 238 struct ibmvfc_discover_targets { 239 struct ibmvfc_mad_common common; 240 struct srp_direct_buf buffer; 241 u32 flags; 242 u16 status; 243 u16 error; 244 u32 bufflen; 245 u32 num_avail; 246 u32 num_written; 247 u64 reserved[2]; 248 }__attribute__((packed, aligned (8))); 249 250 enum ibmvfc_fc_reason { 251 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 252 IBMVFC_INVALID_VERSION = 0x02, 253 IBMVFC_LOGICAL_ERROR = 0x03, 254 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 255 IBMVFC_LOGICAL_BUSY = 0x05, 256 IBMVFC_PROTOCOL_ERROR = 0x07, 257 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 258 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 259 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 260 IBMVFC_CMD_IN_PROGRESS = 0x0E, 261 IBMVFC_VENDOR_SPECIFIC = 0xFF, 262 }; 263 264 enum ibmvfc_fc_type { 265 IBMVFC_FABRIC_REJECT = 0x01, 266 IBMVFC_PORT_REJECT = 0x02, 267 IBMVFC_LS_REJECT = 0x03, 268 IBMVFC_FABRIC_BUSY = 0x04, 269 IBMVFC_PORT_BUSY = 0x05, 270 IBMVFC_BASIC_REJECT = 0x06, 271 }; 272 273 enum ibmvfc_gs_explain { 274 IBMVFC_PORT_NAME_NOT_REG = 0x02, 275 }; 276 277 struct ibmvfc_port_login { 278 struct ibmvfc_mad_common common; 279 u64 scsi_id; 280 u16 reserved; 281 u16 fc_service_class; 282 u32 blksz; 283 u32 hdr_per_blk; 284 u16 status; 285 u16 error; /* also fc_reason */ 286 u16 fc_explain; 287 u16 fc_type; 288 u32 reserved2; 289 struct ibmvfc_service_parms service_parms; 290 struct ibmvfc_service_parms service_parms_change; 291 u64 reserved3[2]; 292 }__attribute__((packed, aligned (8))); 293 294 struct ibmvfc_prli_svc_parms { 295 u8 type; 296 #define IBMVFC_SCSI_FCP_TYPE 0x08 297 u8 type_ext; 298 u16 flags; 299 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 300 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 301 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 302 u32 orig_pa; 303 u32 resp_pa; 304 u32 service_parms; 305 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 306 #define IBMVFC_PRLI_RETRY 0x00000100 307 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 308 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 309 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 310 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 311 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 312 }__attribute__((packed, aligned (4))); 313 314 struct ibmvfc_process_login { 315 struct ibmvfc_mad_common common; 316 u64 scsi_id; 317 struct ibmvfc_prli_svc_parms parms; 318 u8 reserved[48]; 319 u16 status; 320 u16 error; /* also fc_reason */ 321 u32 reserved2; 322 u64 reserved3[2]; 323 }__attribute__((packed, aligned (8))); 324 325 struct ibmvfc_query_tgt { 326 struct ibmvfc_mad_common common; 327 u64 wwpn; 328 u64 scsi_id; 329 u16 status; 330 u16 error; 331 u16 fc_explain; 332 u16 fc_type; 333 u64 reserved[2]; 334 }__attribute__((packed, aligned (8))); 335 336 struct ibmvfc_implicit_logout { 337 struct ibmvfc_mad_common common; 338 u64 old_scsi_id; 339 u64 reserved[2]; 340 }__attribute__((packed, aligned (8))); 341 342 struct ibmvfc_tmf { 343 struct ibmvfc_mad_common common; 344 u64 scsi_id; 345 struct scsi_lun lun; 346 u32 flags; 347 #define IBMVFC_TMF_ABORT_TASK 0x02 348 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 349 #define IBMVFC_TMF_LUN_RESET 0x10 350 #define IBMVFC_TMF_TGT_RESET 0x20 351 #define IBMVFC_TMF_LUA_VALID 0x40 352 u32 cancel_key; 353 u32 my_cancel_key; 354 u32 pad; 355 u64 reserved[2]; 356 }__attribute__((packed, aligned (8))); 357 358 enum ibmvfc_fcp_rsp_info_codes { 359 RSP_NO_FAILURE = 0x00, 360 RSP_TMF_REJECTED = 0x04, 361 RSP_TMF_FAILED = 0x05, 362 RSP_TMF_INVALID_LUN = 0x09, 363 }; 364 365 struct ibmvfc_fcp_rsp_info { 366 u16 reserved; 367 u8 rsp_code; 368 u8 reserved2[4]; 369 }__attribute__((packed, aligned (2))); 370 371 enum ibmvfc_fcp_rsp_flags { 372 FCP_BIDI_RSP = 0x80, 373 FCP_BIDI_READ_RESID_UNDER = 0x40, 374 FCP_BIDI_READ_RESID_OVER = 0x20, 375 FCP_CONF_REQ = 0x10, 376 FCP_RESID_UNDER = 0x08, 377 FCP_RESID_OVER = 0x04, 378 FCP_SNS_LEN_VALID = 0x02, 379 FCP_RSP_LEN_VALID = 0x01, 380 }; 381 382 union ibmvfc_fcp_rsp_data { 383 struct ibmvfc_fcp_rsp_info info; 384 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 385 }__attribute__((packed, aligned (8))); 386 387 struct ibmvfc_fcp_rsp { 388 u64 reserved; 389 u16 retry_delay_timer; 390 u8 flags; 391 u8 scsi_status; 392 u32 fcp_resid; 393 u32 fcp_sense_len; 394 u32 fcp_rsp_len; 395 union ibmvfc_fcp_rsp_data data; 396 }__attribute__((packed, aligned (8))); 397 398 enum ibmvfc_cmd_flags { 399 IBMVFC_SCATTERLIST = 0x0001, 400 IBMVFC_NO_MEM_DESC = 0x0002, 401 IBMVFC_READ = 0x0004, 402 IBMVFC_WRITE = 0x0008, 403 IBMVFC_TMF = 0x0080, 404 IBMVFC_CLASS_3_ERR = 0x0100, 405 }; 406 407 enum ibmvfc_fc_task_attr { 408 IBMVFC_SIMPLE_TASK = 0x00, 409 IBMVFC_HEAD_OF_QUEUE = 0x01, 410 IBMVFC_ORDERED_TASK = 0x02, 411 IBMVFC_ACA_TASK = 0x04, 412 }; 413 414 enum ibmvfc_fc_tmf_flags { 415 IBMVFC_ABORT_TASK_SET = 0x02, 416 IBMVFC_LUN_RESET = 0x10, 417 IBMVFC_TARGET_RESET = 0x20, 418 }; 419 420 struct ibmvfc_fcp_cmd_iu { 421 struct scsi_lun lun; 422 u8 crn; 423 u8 pri_task_attr; 424 u8 tmf_flags; 425 u8 add_cdb_len; 426 #define IBMVFC_RDDATA 0x02 427 #define IBMVFC_WRDATA 0x01 428 u8 cdb[IBMVFC_MAX_CDB_LEN]; 429 u32 xfer_len; 430 }__attribute__((packed, aligned (4))); 431 432 struct ibmvfc_cmd { 433 u64 task_tag; 434 u32 frame_type; 435 u32 payload_len; 436 u32 resp_len; 437 u32 adapter_resid; 438 u16 status; 439 u16 error; 440 u16 flags; 441 u16 response_flags; 442 #define IBMVFC_ADAPTER_RESID_VALID 0x01 443 u32 cancel_key; 444 u32 exchange_id; 445 struct srp_direct_buf ext_func; 446 struct srp_direct_buf ioba; 447 struct srp_direct_buf resp; 448 u64 correlation; 449 u64 tgt_scsi_id; 450 u64 tag; 451 u64 reserved3[2]; 452 struct ibmvfc_fcp_cmd_iu iu; 453 struct ibmvfc_fcp_rsp rsp; 454 }__attribute__((packed, aligned (8))); 455 456 struct ibmvfc_passthru_fc_iu { 457 u32 payload[7]; 458 #define IBMVFC_ADISC 0x52000000 459 u32 response[7]; 460 }; 461 462 struct ibmvfc_passthru_iu { 463 u64 task_tag; 464 u32 cmd_len; 465 u32 rsp_len; 466 u16 status; 467 u16 error; 468 u32 flags; 469 #define IBMVFC_FC_ELS 0x01 470 #define IBMVFC_FC_CT_IU 0x02 471 u32 cancel_key; 472 #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 473 #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 474 u32 reserved; 475 struct srp_direct_buf cmd; 476 struct srp_direct_buf rsp; 477 u64 correlation; 478 u64 scsi_id; 479 u64 tag; 480 u64 reserved2[2]; 481 }__attribute__((packed, aligned (8))); 482 483 struct ibmvfc_passthru_mad { 484 struct ibmvfc_mad_common common; 485 struct srp_direct_buf cmd_ioba; 486 struct ibmvfc_passthru_iu iu; 487 struct ibmvfc_passthru_fc_iu fc_iu; 488 }__attribute__((packed, aligned (8))); 489 490 struct ibmvfc_trace_start_entry { 491 u32 xfer_len; 492 }__attribute__((packed)); 493 494 struct ibmvfc_trace_end_entry { 495 u16 status; 496 u16 error; 497 u8 fcp_rsp_flags; 498 u8 rsp_code; 499 u8 scsi_status; 500 u8 reserved; 501 }__attribute__((packed)); 502 503 struct ibmvfc_trace_entry { 504 struct ibmvfc_event *evt; 505 u32 time; 506 u32 scsi_id; 507 u32 lun; 508 u8 fmt; 509 u8 op_code; 510 u8 tmf_flags; 511 u8 type; 512 #define IBMVFC_TRC_START 0x00 513 #define IBMVFC_TRC_END 0xff 514 union { 515 struct ibmvfc_trace_start_entry start; 516 struct ibmvfc_trace_end_entry end; 517 } u; 518 }__attribute__((packed, aligned (8))); 519 520 enum ibmvfc_crq_formats { 521 IBMVFC_CMD_FORMAT = 0x01, 522 IBMVFC_ASYNC_EVENT = 0x02, 523 IBMVFC_MAD_FORMAT = 0x04, 524 }; 525 526 enum ibmvfc_async_event { 527 IBMVFC_AE_ELS_PLOGI = 0x0001, 528 IBMVFC_AE_ELS_LOGO = 0x0002, 529 IBMVFC_AE_ELS_PRLO = 0x0004, 530 IBMVFC_AE_SCN_NPORT = 0x0008, 531 IBMVFC_AE_SCN_GROUP = 0x0010, 532 IBMVFC_AE_SCN_DOMAIN = 0x0020, 533 IBMVFC_AE_SCN_FABRIC = 0x0040, 534 IBMVFC_AE_LINK_UP = 0x0080, 535 IBMVFC_AE_LINK_DOWN = 0x0100, 536 IBMVFC_AE_LINK_DEAD = 0x0200, 537 IBMVFC_AE_HALT = 0x0400, 538 IBMVFC_AE_RESUME = 0x0800, 539 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 540 }; 541 542 struct ibmvfc_crq { 543 volatile u8 valid; 544 volatile u8 format; 545 u8 reserved[6]; 546 volatile u64 ioba; 547 }__attribute__((packed, aligned (8))); 548 549 struct ibmvfc_crq_queue { 550 struct ibmvfc_crq *msgs; 551 int size, cur; 552 dma_addr_t msg_token; 553 }; 554 555 enum ibmvfc_ae_link_state { 556 IBMVFC_AE_LS_LINK_UP = 0x01, 557 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 558 IBMVFC_AE_LS_LINK_DOWN = 0x04, 559 IBMVFC_AE_LS_LINK_DEAD = 0x08, 560 }; 561 562 struct ibmvfc_async_crq { 563 volatile u8 valid; 564 u8 link_state; 565 u8 pad[2]; 566 u32 pad2; 567 volatile u64 event; 568 volatile u64 scsi_id; 569 volatile u64 wwpn; 570 volatile u64 node_name; 571 u64 reserved; 572 }__attribute__((packed, aligned (8))); 573 574 struct ibmvfc_async_crq_queue { 575 struct ibmvfc_async_crq *msgs; 576 int size, cur; 577 dma_addr_t msg_token; 578 }; 579 580 union ibmvfc_iu { 581 struct ibmvfc_mad_common mad_common; 582 struct ibmvfc_npiv_login_mad npiv_login; 583 struct ibmvfc_npiv_logout_mad npiv_logout; 584 struct ibmvfc_discover_targets discover_targets; 585 struct ibmvfc_port_login plogi; 586 struct ibmvfc_process_login prli; 587 struct ibmvfc_query_tgt query_tgt; 588 struct ibmvfc_implicit_logout implicit_logout; 589 struct ibmvfc_tmf tmf; 590 struct ibmvfc_cmd cmd; 591 struct ibmvfc_passthru_mad passthru; 592 }__attribute__((packed, aligned (8))); 593 594 enum ibmvfc_target_action { 595 IBMVFC_TGT_ACTION_NONE = 0, 596 IBMVFC_TGT_ACTION_INIT, 597 IBMVFC_TGT_ACTION_INIT_WAIT, 598 IBMVFC_TGT_ACTION_DEL_RPORT, 599 }; 600 601 struct ibmvfc_target { 602 struct list_head queue; 603 struct ibmvfc_host *vhost; 604 u64 scsi_id; 605 u64 new_scsi_id; 606 struct fc_rport *rport; 607 int target_id; 608 enum ibmvfc_target_action action; 609 int need_login; 610 int add_rport; 611 int init_retries; 612 int logo_rcvd; 613 u32 cancel_key; 614 struct ibmvfc_service_parms service_parms; 615 struct ibmvfc_service_parms service_parms_change; 616 struct fc_rport_identifiers ids; 617 void (*job_step) (struct ibmvfc_target *); 618 struct timer_list timer; 619 struct kref kref; 620 }; 621 622 /* a unit of work for the hosting partition */ 623 struct ibmvfc_event { 624 struct list_head queue; 625 struct ibmvfc_host *vhost; 626 struct ibmvfc_target *tgt; 627 struct scsi_cmnd *cmnd; 628 atomic_t free; 629 union ibmvfc_iu *xfer_iu; 630 void (*done) (struct ibmvfc_event *); 631 struct ibmvfc_crq crq; 632 union ibmvfc_iu iu; 633 union ibmvfc_iu *sync_iu; 634 struct srp_direct_buf *ext_list; 635 dma_addr_t ext_list_token; 636 struct completion comp; 637 struct completion *eh_comp; 638 struct timer_list timer; 639 }; 640 641 /* a pool of event structs for use */ 642 struct ibmvfc_event_pool { 643 struct ibmvfc_event *events; 644 u32 size; 645 union ibmvfc_iu *iu_storage; 646 dma_addr_t iu_token; 647 }; 648 649 enum ibmvfc_host_action { 650 IBMVFC_HOST_ACTION_NONE = 0, 651 IBMVFC_HOST_ACTION_LOGO, 652 IBMVFC_HOST_ACTION_LOGO_WAIT, 653 IBMVFC_HOST_ACTION_INIT, 654 IBMVFC_HOST_ACTION_INIT_WAIT, 655 IBMVFC_HOST_ACTION_QUERY, 656 IBMVFC_HOST_ACTION_QUERY_TGTS, 657 IBMVFC_HOST_ACTION_TGT_DEL, 658 IBMVFC_HOST_ACTION_ALLOC_TGTS, 659 IBMVFC_HOST_ACTION_TGT_INIT, 660 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 661 }; 662 663 enum ibmvfc_host_state { 664 IBMVFC_NO_CRQ = 0, 665 IBMVFC_INITIALIZING, 666 IBMVFC_ACTIVE, 667 IBMVFC_HALTED, 668 IBMVFC_LINK_DOWN, 669 IBMVFC_LINK_DEAD, 670 IBMVFC_HOST_OFFLINE, 671 }; 672 673 struct ibmvfc_host { 674 char name[8]; 675 struct list_head queue; 676 struct Scsi_Host *host; 677 enum ibmvfc_host_state state; 678 enum ibmvfc_host_action action; 679 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 680 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 681 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 682 struct ibmvfc_trace_entry *trace; 683 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 684 int num_targets; 685 struct list_head targets; 686 struct list_head sent; 687 struct list_head free; 688 struct device *dev; 689 struct ibmvfc_event_pool pool; 690 struct dma_pool *sg_pool; 691 mempool_t *tgt_pool; 692 struct ibmvfc_crq_queue crq; 693 struct ibmvfc_async_crq_queue async_crq; 694 struct ibmvfc_npiv_login login_info; 695 union ibmvfc_npiv_login_data *login_buf; 696 dma_addr_t login_buf_dma; 697 int disc_buf_sz; 698 int log_level; 699 struct ibmvfc_discover_targets_buf *disc_buf; 700 struct mutex passthru_mutex; 701 int task_set; 702 int init_retries; 703 int discovery_threads; 704 int abort_threads; 705 int client_migrated; 706 int reinit; 707 int delay_init; 708 int scan_complete; 709 int logged_in; 710 int aborting_passthru; 711 int events_to_log; 712 #define IBMVFC_AE_LINKUP 0x0001 713 #define IBMVFC_AE_LINKDOWN 0x0002 714 #define IBMVFC_AE_RSCN 0x0004 715 dma_addr_t disc_buf_dma; 716 unsigned int partition_number; 717 char partition_name[97]; 718 void (*job_step) (struct ibmvfc_host *); 719 struct task_struct *work_thread; 720 struct tasklet_struct tasklet; 721 struct work_struct rport_add_work_q; 722 wait_queue_head_t init_wait_q; 723 wait_queue_head_t work_wait_q; 724 }; 725 726 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 727 728 #define tgt_dbg(t, fmt, ...) \ 729 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 730 731 #define tgt_info(t, fmt, ...) \ 732 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 733 734 #define tgt_err(t, fmt, ...) \ 735 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 736 737 #define tgt_log(t, level, fmt, ...) \ 738 do { \ 739 if ((t)->vhost->log_level >= level) \ 740 tgt_err(t, fmt, ##__VA_ARGS__); \ 741 } while (0) 742 743 #define ibmvfc_dbg(vhost, ...) \ 744 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 745 746 #define ibmvfc_log(vhost, level, ...) \ 747 do { \ 748 if ((vhost)->log_level >= level) \ 749 dev_err((vhost)->dev, ##__VA_ARGS__); \ 750 } while (0) 751 752 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 753 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 754 755 #ifdef CONFIG_SCSI_IBMVFC_TRACE 756 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 757 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 758 #else 759 #define ibmvfc_create_trace_file(kobj, attr) 0 760 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 761 #endif 762 763 #endif 764