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 "1.0.4" 33 #define IBMVFC_DRIVER_DATE "(November 14, 2008)" 34 35 #define IBMVFC_DEFAULT_TIMEOUT 60 36 #define IBMVFC_INIT_TIMEOUT 120 37 #define IBMVFC_MAX_REQUESTS_DEFAULT 100 38 39 #define IBMVFC_DEBUG 0 40 #define IBMVFC_MAX_TARGETS 1024 41 #define IBMVFC_MAX_LUN 0xffffffff 42 #define IBMVFC_MAX_SECTORS 0xffffu 43 #define IBMVFC_MAX_DISC_THREADS 4 44 #define IBMVFC_TGT_MEMPOOL_SZ 64 45 #define IBMVFC_MAX_CMDS_PER_LUN 64 46 #define IBMVFC_MAX_HOST_INIT_RETRIES 6 47 #define IBMVFC_MAX_TGT_INIT_RETRIES 3 48 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 49 #define IBMVFC_DEFAULT_LOG_LEVEL 2 50 #define IBMVFC_MAX_CDB_LEN 16 51 52 /* 53 * Ensure we have resources for ERP and initialization: 54 * 1 for ERP 55 * 1 for initialization 56 * 1 for each discovery thread 57 */ 58 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads) 59 60 #define IBMVFC_MAD_SUCCESS 0x00 61 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 62 #define IBMVFC_MAD_FAILED 0xF7 63 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 64 #define IBMVFC_MAD_CRQ_ERROR 0xEF 65 66 enum ibmvfc_crq_valid { 67 IBMVFC_CRQ_CMD_RSP = 0x80, 68 IBMVFC_CRQ_INIT_RSP = 0xC0, 69 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 70 }; 71 72 enum ibmvfc_crq_format { 73 IBMVFC_CRQ_INIT = 0x01, 74 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 75 IBMVFC_PARTITION_MIGRATED = 0x06, 76 }; 77 78 enum ibmvfc_cmd_status_flags { 79 IBMVFC_FABRIC_MAPPED = 0x0001, 80 IBMVFC_VIOS_FAILURE = 0x0002, 81 IBMVFC_FC_FAILURE = 0x0004, 82 IBMVFC_FC_SCSI_ERROR = 0x0008, 83 IBMVFC_HW_EVENT_LOGGED = 0x0010, 84 IBMVFC_VIOS_LOGGED = 0x0020, 85 }; 86 87 enum ibmvfc_fabric_mapped_errors { 88 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 89 IBMVFC_XPORT_FAULT = 0x0002, 90 IBMVFC_CMD_TIMEOUT = 0x0003, 91 IBMVFC_ENETDOWN = 0x0004, 92 IBMVFC_HW_FAILURE = 0x0005, 93 IBMVFC_LINK_DOWN_ERR = 0x0006, 94 IBMVFC_LINK_DEAD_ERR = 0x0007, 95 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 96 IBMVFC_XPORT_BUSY = 0x000A, 97 IBMVFC_XPORT_DEAD = 0x000B, 98 IBMVFC_CONFIG_ERROR = 0x000C, 99 IBMVFC_NAME_SERVER_FAIL = 0x000D, 100 IBMVFC_LINK_HALTED = 0x000E, 101 IBMVFC_XPORT_GENERAL = 0x8000, 102 }; 103 104 enum ibmvfc_vios_errors { 105 IBMVFC_CRQ_FAILURE = 0x0001, 106 IBMVFC_SW_FAILURE = 0x0002, 107 IBMVFC_INVALID_PARAMETER = 0x0003, 108 IBMVFC_MISSING_PARAMETER = 0x0004, 109 IBMVFC_HOST_IO_BUS = 0x0005, 110 IBMVFC_TRANS_CANCELLED = 0x0006, 111 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 112 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 113 IBMVFC_PLOGI_REQUIRED = 0x0010, 114 IBMVFC_COMMAND_FAILED = 0x8000, 115 }; 116 117 enum ibmvfc_mad_types { 118 IBMVFC_NPIV_LOGIN = 0x0001, 119 IBMVFC_DISC_TARGETS = 0x0002, 120 IBMVFC_PORT_LOGIN = 0x0004, 121 IBMVFC_PROCESS_LOGIN = 0x0008, 122 IBMVFC_QUERY_TARGET = 0x0010, 123 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 124 IBMVFC_PASSTHRU = 0x0200, 125 IBMVFC_TMF_MAD = 0x0100, 126 }; 127 128 struct ibmvfc_mad_common { 129 u32 version; 130 u32 reserved; 131 u32 opcode; 132 u16 status; 133 u16 length; 134 u64 tag; 135 }__attribute__((packed, aligned (8))); 136 137 struct ibmvfc_npiv_login_mad { 138 struct ibmvfc_mad_common common; 139 struct srp_direct_buf buffer; 140 }__attribute__((packed, aligned (8))); 141 142 #define IBMVFC_MAX_NAME 256 143 144 struct ibmvfc_npiv_login { 145 u32 ostype; 146 #define IBMVFC_OS_LINUX 0x02 147 u32 pad; 148 u64 max_dma_len; 149 u32 max_payload; 150 u32 max_response; 151 u32 partition_num; 152 u32 vfc_frame_version; 153 u16 fcp_version; 154 u16 flags; 155 #define IBMVFC_CLIENT_MIGRATED 0x01 156 #define IBMVFC_FLUSH_ON_HALT 0x02 157 u32 max_cmds; 158 u64 capabilities; 159 #define IBMVFC_CAN_MIGRATE 0x01 160 u64 node_name; 161 struct srp_direct_buf async; 162 u8 partition_name[IBMVFC_MAX_NAME]; 163 u8 device_name[IBMVFC_MAX_NAME]; 164 u8 drc_name[IBMVFC_MAX_NAME]; 165 u64 reserved2[2]; 166 }__attribute__((packed, aligned (8))); 167 168 struct ibmvfc_common_svc_parms { 169 u16 fcph_version; 170 u16 b2b_credit; 171 u16 features; 172 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 173 u32 ratov; 174 u32 edtov; 175 }__attribute__((packed, aligned (4))); 176 177 struct ibmvfc_service_parms { 178 struct ibmvfc_common_svc_parms common; 179 u8 port_name[8]; 180 u8 node_name[8]; 181 u32 class1_parms[4]; 182 u32 class2_parms[4]; 183 u32 class3_parms[4]; 184 u32 obsolete[4]; 185 u32 vendor_version[4]; 186 u32 services_avail[2]; 187 u32 ext_len; 188 u32 reserved[30]; 189 u32 clk_sync_qos[2]; 190 }__attribute__((packed, aligned (4))); 191 192 struct ibmvfc_npiv_login_resp { 193 u32 version; 194 u16 status; 195 u16 error; 196 u32 flags; 197 #define IBMVFC_NATIVE_FC 0x01 198 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 199 u32 reserved; 200 u64 capabilites; 201 u32 max_cmds; 202 u32 scsi_id_sz; 203 u64 max_dma_len; 204 u64 scsi_id; 205 u64 port_name; 206 u64 node_name; 207 u64 link_speed; 208 u8 partition_name[IBMVFC_MAX_NAME]; 209 u8 device_name[IBMVFC_MAX_NAME]; 210 u8 port_loc_code[IBMVFC_MAX_NAME]; 211 u8 drc_name[IBMVFC_MAX_NAME]; 212 struct ibmvfc_service_parms service_parms; 213 u64 reserved2; 214 }__attribute__((packed, aligned (8))); 215 216 union ibmvfc_npiv_login_data { 217 struct ibmvfc_npiv_login login; 218 struct ibmvfc_npiv_login_resp resp; 219 }__attribute__((packed, aligned (8))); 220 221 struct ibmvfc_discover_targets_buf { 222 u32 scsi_id[1]; 223 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 224 }; 225 226 struct ibmvfc_discover_targets { 227 struct ibmvfc_mad_common common; 228 struct srp_direct_buf buffer; 229 u32 flags; 230 u16 status; 231 u16 error; 232 u32 bufflen; 233 u32 num_avail; 234 u32 num_written; 235 u64 reserved[2]; 236 }__attribute__((packed, aligned (8))); 237 238 enum ibmvfc_fc_reason { 239 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 240 IBMVFC_INVALID_VERSION = 0x02, 241 IBMVFC_LOGICAL_ERROR = 0x03, 242 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 243 IBMVFC_LOGICAL_BUSY = 0x05, 244 IBMVFC_PROTOCOL_ERROR = 0x07, 245 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 246 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 247 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 248 IBMVFC_CMD_IN_PROGRESS = 0x0E, 249 IBMVFC_VENDOR_SPECIFIC = 0xFF, 250 }; 251 252 enum ibmvfc_fc_type { 253 IBMVFC_FABRIC_REJECT = 0x01, 254 IBMVFC_PORT_REJECT = 0x02, 255 IBMVFC_LS_REJECT = 0x03, 256 IBMVFC_FABRIC_BUSY = 0x04, 257 IBMVFC_PORT_BUSY = 0x05, 258 IBMVFC_BASIC_REJECT = 0x06, 259 }; 260 261 enum ibmvfc_gs_explain { 262 IBMVFC_PORT_NAME_NOT_REG = 0x02, 263 }; 264 265 struct ibmvfc_port_login { 266 struct ibmvfc_mad_common common; 267 u64 scsi_id; 268 u16 reserved; 269 u16 fc_service_class; 270 u32 blksz; 271 u32 hdr_per_blk; 272 u16 status; 273 u16 error; /* also fc_reason */ 274 u16 fc_explain; 275 u16 fc_type; 276 u32 reserved2; 277 struct ibmvfc_service_parms service_parms; 278 struct ibmvfc_service_parms service_parms_change; 279 u64 reserved3[2]; 280 }__attribute__((packed, aligned (8))); 281 282 struct ibmvfc_prli_svc_parms { 283 u8 type; 284 #define IBMVFC_SCSI_FCP_TYPE 0x08 285 u8 type_ext; 286 u16 flags; 287 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 288 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 289 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 290 u32 orig_pa; 291 u32 resp_pa; 292 u32 service_parms; 293 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 294 #define IBMVFC_PRLI_RETRY 0x00000100 295 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 296 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 297 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 298 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 299 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 300 }__attribute__((packed, aligned (4))); 301 302 struct ibmvfc_process_login { 303 struct ibmvfc_mad_common common; 304 u64 scsi_id; 305 struct ibmvfc_prli_svc_parms parms; 306 u8 reserved[48]; 307 u16 status; 308 u16 error; /* also fc_reason */ 309 u32 reserved2; 310 u64 reserved3[2]; 311 }__attribute__((packed, aligned (8))); 312 313 struct ibmvfc_query_tgt { 314 struct ibmvfc_mad_common common; 315 u64 wwpn; 316 u64 scsi_id; 317 u16 status; 318 u16 error; 319 u16 fc_explain; 320 u16 fc_type; 321 u64 reserved[2]; 322 }__attribute__((packed, aligned (8))); 323 324 struct ibmvfc_implicit_logout { 325 struct ibmvfc_mad_common common; 326 u64 old_scsi_id; 327 u64 reserved[2]; 328 }__attribute__((packed, aligned (8))); 329 330 struct ibmvfc_tmf { 331 struct ibmvfc_mad_common common; 332 u64 scsi_id; 333 struct scsi_lun lun; 334 u32 flags; 335 #define IBMVFC_TMF_ABORT_TASK 0x02 336 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 337 #define IBMVFC_TMF_LUN_RESET 0x10 338 #define IBMVFC_TMF_TGT_RESET 0x20 339 #define IBMVFC_TMF_LUA_VALID 0x40 340 u32 cancel_key; 341 u32 my_cancel_key; 342 u32 pad; 343 u64 reserved[2]; 344 }__attribute__((packed, aligned (8))); 345 346 enum ibmvfc_fcp_rsp_info_codes { 347 RSP_NO_FAILURE = 0x00, 348 RSP_TMF_REJECTED = 0x04, 349 RSP_TMF_FAILED = 0x05, 350 RSP_TMF_INVALID_LUN = 0x09, 351 }; 352 353 struct ibmvfc_fcp_rsp_info { 354 u16 reserved; 355 u8 rsp_code; 356 u8 reserved2[4]; 357 }__attribute__((packed, aligned (2))); 358 359 enum ibmvfc_fcp_rsp_flags { 360 FCP_BIDI_RSP = 0x80, 361 FCP_BIDI_READ_RESID_UNDER = 0x40, 362 FCP_BIDI_READ_RESID_OVER = 0x20, 363 FCP_CONF_REQ = 0x10, 364 FCP_RESID_UNDER = 0x08, 365 FCP_RESID_OVER = 0x04, 366 FCP_SNS_LEN_VALID = 0x02, 367 FCP_RSP_LEN_VALID = 0x01, 368 }; 369 370 union ibmvfc_fcp_rsp_data { 371 struct ibmvfc_fcp_rsp_info info; 372 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 373 }__attribute__((packed, aligned (8))); 374 375 struct ibmvfc_fcp_rsp { 376 u64 reserved; 377 u16 retry_delay_timer; 378 u8 flags; 379 u8 scsi_status; 380 u32 fcp_resid; 381 u32 fcp_sense_len; 382 u32 fcp_rsp_len; 383 union ibmvfc_fcp_rsp_data data; 384 }__attribute__((packed, aligned (8))); 385 386 enum ibmvfc_cmd_flags { 387 IBMVFC_SCATTERLIST = 0x0001, 388 IBMVFC_NO_MEM_DESC = 0x0002, 389 IBMVFC_READ = 0x0004, 390 IBMVFC_WRITE = 0x0008, 391 IBMVFC_TMF = 0x0080, 392 IBMVFC_CLASS_3_ERR = 0x0100, 393 }; 394 395 enum ibmvfc_fc_task_attr { 396 IBMVFC_SIMPLE_TASK = 0x00, 397 IBMVFC_HEAD_OF_QUEUE = 0x01, 398 IBMVFC_ORDERED_TASK = 0x02, 399 IBMVFC_ACA_TASK = 0x04, 400 }; 401 402 enum ibmvfc_fc_tmf_flags { 403 IBMVFC_ABORT_TASK_SET = 0x02, 404 IBMVFC_LUN_RESET = 0x10, 405 IBMVFC_TARGET_RESET = 0x20, 406 }; 407 408 struct ibmvfc_fcp_cmd_iu { 409 struct scsi_lun lun; 410 u8 crn; 411 u8 pri_task_attr; 412 u8 tmf_flags; 413 u8 add_cdb_len; 414 #define IBMVFC_RDDATA 0x02 415 #define IBMVFC_WRDATA 0x01 416 u8 cdb[IBMVFC_MAX_CDB_LEN]; 417 u32 xfer_len; 418 }__attribute__((packed, aligned (4))); 419 420 struct ibmvfc_cmd { 421 u64 task_tag; 422 u32 frame_type; 423 u32 payload_len; 424 u32 resp_len; 425 u32 adapter_resid; 426 u16 status; 427 u16 error; 428 u16 flags; 429 u16 response_flags; 430 #define IBMVFC_ADAPTER_RESID_VALID 0x01 431 u32 cancel_key; 432 u32 exchange_id; 433 struct srp_direct_buf ext_func; 434 struct srp_direct_buf ioba; 435 struct srp_direct_buf resp; 436 u64 correlation; 437 u64 tgt_scsi_id; 438 u64 tag; 439 u64 reserved3[2]; 440 struct ibmvfc_fcp_cmd_iu iu; 441 struct ibmvfc_fcp_rsp rsp; 442 }__attribute__((packed, aligned (8))); 443 444 struct ibmvfc_passthru_fc_iu { 445 u32 payload[7]; 446 #define IBMVFC_ADISC 0x52000000 447 u32 response[7]; 448 }; 449 450 struct ibmvfc_passthru_iu { 451 u64 task_tag; 452 u32 cmd_len; 453 u32 rsp_len; 454 u16 status; 455 u16 error; 456 u32 flags; 457 #define IBMVFC_FC_ELS 0x01 458 u32 cancel_key; 459 u32 reserved; 460 struct srp_direct_buf cmd; 461 struct srp_direct_buf rsp; 462 u64 correlation; 463 u64 scsi_id; 464 u64 tag; 465 u64 reserved2[2]; 466 }__attribute__((packed, aligned (8))); 467 468 struct ibmvfc_passthru_mad { 469 struct ibmvfc_mad_common common; 470 struct srp_direct_buf cmd_ioba; 471 struct ibmvfc_passthru_iu iu; 472 struct ibmvfc_passthru_fc_iu fc_iu; 473 }__attribute__((packed, aligned (8))); 474 475 struct ibmvfc_trace_start_entry { 476 u32 xfer_len; 477 }__attribute__((packed)); 478 479 struct ibmvfc_trace_end_entry { 480 u16 status; 481 u16 error; 482 u8 fcp_rsp_flags; 483 u8 rsp_code; 484 u8 scsi_status; 485 u8 reserved; 486 }__attribute__((packed)); 487 488 struct ibmvfc_trace_entry { 489 struct ibmvfc_event *evt; 490 u32 time; 491 u32 scsi_id; 492 u32 lun; 493 u8 fmt; 494 u8 op_code; 495 u8 tmf_flags; 496 u8 type; 497 #define IBMVFC_TRC_START 0x00 498 #define IBMVFC_TRC_END 0xff 499 union { 500 struct ibmvfc_trace_start_entry start; 501 struct ibmvfc_trace_end_entry end; 502 } u; 503 }__attribute__((packed, aligned (8))); 504 505 enum ibmvfc_crq_formats { 506 IBMVFC_CMD_FORMAT = 0x01, 507 IBMVFC_ASYNC_EVENT = 0x02, 508 IBMVFC_MAD_FORMAT = 0x04, 509 }; 510 511 enum ibmvfc_async_event { 512 IBMVFC_AE_ELS_PLOGI = 0x0001, 513 IBMVFC_AE_ELS_LOGO = 0x0002, 514 IBMVFC_AE_ELS_PRLO = 0x0004, 515 IBMVFC_AE_SCN_NPORT = 0x0008, 516 IBMVFC_AE_SCN_GROUP = 0x0010, 517 IBMVFC_AE_SCN_DOMAIN = 0x0020, 518 IBMVFC_AE_SCN_FABRIC = 0x0040, 519 IBMVFC_AE_LINK_UP = 0x0080, 520 IBMVFC_AE_LINK_DOWN = 0x0100, 521 IBMVFC_AE_LINK_DEAD = 0x0200, 522 IBMVFC_AE_HALT = 0x0400, 523 IBMVFC_AE_RESUME = 0x0800, 524 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 525 }; 526 527 struct ibmvfc_crq { 528 volatile u8 valid; 529 volatile u8 format; 530 u8 reserved[6]; 531 volatile u64 ioba; 532 }__attribute__((packed, aligned (8))); 533 534 struct ibmvfc_crq_queue { 535 struct ibmvfc_crq *msgs; 536 int size, cur; 537 dma_addr_t msg_token; 538 }; 539 540 struct ibmvfc_async_crq { 541 volatile u8 valid; 542 u8 pad[3]; 543 u32 pad2; 544 volatile u64 event; 545 volatile u64 scsi_id; 546 volatile u64 wwpn; 547 volatile u64 node_name; 548 u64 reserved; 549 }__attribute__((packed, aligned (8))); 550 551 struct ibmvfc_async_crq_queue { 552 struct ibmvfc_async_crq *msgs; 553 int size, cur; 554 dma_addr_t msg_token; 555 }; 556 557 union ibmvfc_iu { 558 struct ibmvfc_mad_common mad_common; 559 struct ibmvfc_npiv_login_mad npiv_login; 560 struct ibmvfc_discover_targets discover_targets; 561 struct ibmvfc_port_login plogi; 562 struct ibmvfc_process_login prli; 563 struct ibmvfc_query_tgt query_tgt; 564 struct ibmvfc_implicit_logout implicit_logout; 565 struct ibmvfc_tmf tmf; 566 struct ibmvfc_cmd cmd; 567 struct ibmvfc_passthru_mad passthru; 568 }__attribute__((packed, aligned (8))); 569 570 enum ibmvfc_target_action { 571 IBMVFC_TGT_ACTION_NONE = 0, 572 IBMVFC_TGT_ACTION_INIT, 573 IBMVFC_TGT_ACTION_INIT_WAIT, 574 IBMVFC_TGT_ACTION_ADD_RPORT, 575 IBMVFC_TGT_ACTION_DEL_RPORT, 576 }; 577 578 struct ibmvfc_target { 579 struct list_head queue; 580 struct ibmvfc_host *vhost; 581 u64 scsi_id; 582 u64 new_scsi_id; 583 struct fc_rport *rport; 584 int target_id; 585 enum ibmvfc_target_action action; 586 int need_login; 587 int init_retries; 588 struct ibmvfc_service_parms service_parms; 589 struct ibmvfc_service_parms service_parms_change; 590 struct fc_rport_identifiers ids; 591 void (*job_step) (struct ibmvfc_target *); 592 struct kref kref; 593 }; 594 595 /* a unit of work for the hosting partition */ 596 struct ibmvfc_event { 597 struct list_head queue; 598 struct ibmvfc_host *vhost; 599 struct ibmvfc_target *tgt; 600 struct scsi_cmnd *cmnd; 601 atomic_t free; 602 union ibmvfc_iu *xfer_iu; 603 void (*done) (struct ibmvfc_event *); 604 struct ibmvfc_crq crq; 605 union ibmvfc_iu iu; 606 union ibmvfc_iu *sync_iu; 607 struct srp_direct_buf *ext_list; 608 dma_addr_t ext_list_token; 609 struct completion comp; 610 struct completion *eh_comp; 611 struct timer_list timer; 612 }; 613 614 /* a pool of event structs for use */ 615 struct ibmvfc_event_pool { 616 struct ibmvfc_event *events; 617 u32 size; 618 union ibmvfc_iu *iu_storage; 619 dma_addr_t iu_token; 620 }; 621 622 enum ibmvfc_host_action { 623 IBMVFC_HOST_ACTION_NONE = 0, 624 IBMVFC_HOST_ACTION_INIT, 625 IBMVFC_HOST_ACTION_INIT_WAIT, 626 IBMVFC_HOST_ACTION_QUERY, 627 IBMVFC_HOST_ACTION_QUERY_TGTS, 628 IBMVFC_HOST_ACTION_TGT_DEL, 629 IBMVFC_HOST_ACTION_ALLOC_TGTS, 630 IBMVFC_HOST_ACTION_TGT_INIT, 631 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 632 IBMVFC_HOST_ACTION_TGT_ADD, 633 }; 634 635 enum ibmvfc_host_state { 636 IBMVFC_NO_CRQ = 0, 637 IBMVFC_INITIALIZING, 638 IBMVFC_ACTIVE, 639 IBMVFC_HALTED, 640 IBMVFC_LINK_DOWN, 641 IBMVFC_LINK_DEAD, 642 IBMVFC_HOST_OFFLINE, 643 }; 644 645 struct ibmvfc_host { 646 char name[8]; 647 struct list_head queue; 648 struct Scsi_Host *host; 649 enum ibmvfc_host_state state; 650 enum ibmvfc_host_action action; 651 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 652 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 653 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 654 struct ibmvfc_trace_entry *trace; 655 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 656 int num_targets; 657 struct list_head targets; 658 struct list_head sent; 659 struct list_head free; 660 struct device *dev; 661 struct ibmvfc_event_pool pool; 662 struct dma_pool *sg_pool; 663 mempool_t *tgt_pool; 664 struct ibmvfc_crq_queue crq; 665 struct ibmvfc_async_crq_queue async_crq; 666 struct ibmvfc_npiv_login login_info; 667 union ibmvfc_npiv_login_data *login_buf; 668 dma_addr_t login_buf_dma; 669 int disc_buf_sz; 670 int log_level; 671 struct ibmvfc_discover_targets_buf *disc_buf; 672 int task_set; 673 int init_retries; 674 int discovery_threads; 675 int client_migrated; 676 int reinit; 677 int delay_init; 678 int events_to_log; 679 #define IBMVFC_AE_LINKUP 0x0001 680 #define IBMVFC_AE_LINKDOWN 0x0002 681 #define IBMVFC_AE_RSCN 0x0004 682 dma_addr_t disc_buf_dma; 683 unsigned int partition_number; 684 char partition_name[97]; 685 void (*job_step) (struct ibmvfc_host *); 686 struct task_struct *work_thread; 687 wait_queue_head_t init_wait_q; 688 wait_queue_head_t work_wait_q; 689 }; 690 691 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 692 693 #define tgt_dbg(t, fmt, ...) \ 694 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 695 696 #define tgt_info(t, fmt, ...) \ 697 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 698 699 #define tgt_err(t, fmt, ...) \ 700 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 701 702 #define ibmvfc_dbg(vhost, ...) \ 703 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 704 705 #define ibmvfc_log(vhost, level, ...) \ 706 do { \ 707 if ((vhost)->log_level >= level) \ 708 dev_err((vhost)->dev, ##__VA_ARGS__); \ 709 } while (0) 710 711 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 712 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 713 714 #ifdef CONFIG_SCSI_IBMVFC_TRACE 715 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 716 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 717 #else 718 #define ibmvfc_create_trace_file(kobj, attr) 0 719 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 720 #endif 721 722 #endif 723