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 "1.0.2" 33 #define IBMVFC_DRIVER_DATE "(August 14, 2008)" 34 35 #define IBMVFC_DEFAULT_TIMEOUT 15 36 #define IBMVFC_INIT_TIMEOUT 30 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_INIT_RETRIES 3 47 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 48 #define IBMVFC_DEFAULT_LOG_LEVEL 2 49 #define IBMVFC_MAX_CDB_LEN 16 50 51 /* 52 * Ensure we have resources for ERP and initialization: 53 * 1 for ERP 54 * 1 for initialization 55 * 1 for each discovery thread 56 */ 57 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads) 58 59 #define IBMVFC_MAD_SUCCESS 0x00 60 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 61 #define IBMVFC_MAD_FAILED 0xF7 62 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 63 #define IBMVFC_MAD_CRQ_ERROR 0xEF 64 65 enum ibmvfc_crq_valid { 66 IBMVFC_CRQ_CMD_RSP = 0x80, 67 IBMVFC_CRQ_INIT_RSP = 0xC0, 68 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 69 }; 70 71 enum ibmvfc_crq_format { 72 IBMVFC_CRQ_INIT = 0x01, 73 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 74 IBMVFC_PARTITION_MIGRATED = 0x06, 75 }; 76 77 enum ibmvfc_cmd_status_flags { 78 IBMVFC_FABRIC_MAPPED = 0x0001, 79 IBMVFC_VIOS_FAILURE = 0x0002, 80 IBMVFC_FC_FAILURE = 0x0004, 81 IBMVFC_FC_SCSI_ERROR = 0x0008, 82 IBMVFC_HW_EVENT_LOGGED = 0x0010, 83 IBMVFC_VIOS_LOGGED = 0x0020, 84 }; 85 86 enum ibmvfc_fabric_mapped_errors { 87 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 88 IBMVFC_XPORT_FAULT = 0x0002, 89 IBMVFC_CMD_TIMEOUT = 0x0003, 90 IBMVFC_ENETDOWN = 0x0004, 91 IBMVFC_HW_FAILURE = 0x0005, 92 IBMVFC_LINK_DOWN_ERR = 0x0006, 93 IBMVFC_LINK_DEAD_ERR = 0x0007, 94 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 95 IBMVFC_XPORT_BUSY = 0x000A, 96 IBMVFC_XPORT_DEAD = 0x000B, 97 IBMVFC_CONFIG_ERROR = 0x000C, 98 IBMVFC_NAME_SERVER_FAIL = 0x000D, 99 IBMVFC_LINK_HALTED = 0x000E, 100 IBMVFC_XPORT_GENERAL = 0x8000, 101 }; 102 103 enum ibmvfc_vios_errors { 104 IBMVFC_CRQ_FAILURE = 0x0001, 105 IBMVFC_SW_FAILURE = 0x0002, 106 IBMVFC_INVALID_PARAMETER = 0x0003, 107 IBMVFC_MISSING_PARAMETER = 0x0004, 108 IBMVFC_HOST_IO_BUS = 0x0005, 109 IBMVFC_TRANS_CANCELLED = 0x0006, 110 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 111 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 112 IBMVFC_COMMAND_FAILED = 0x8000, 113 }; 114 115 enum ibmvfc_mad_types { 116 IBMVFC_NPIV_LOGIN = 0x0001, 117 IBMVFC_DISC_TARGETS = 0x0002, 118 IBMVFC_PORT_LOGIN = 0x0004, 119 IBMVFC_PROCESS_LOGIN = 0x0008, 120 IBMVFC_QUERY_TARGET = 0x0010, 121 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 122 IBMVFC_PASSTHRU = 0x0200, 123 IBMVFC_TMF_MAD = 0x0100, 124 }; 125 126 struct ibmvfc_mad_common { 127 u32 version; 128 u32 reserved; 129 u32 opcode; 130 u16 status; 131 u16 length; 132 u64 tag; 133 }__attribute__((packed, aligned (8))); 134 135 struct ibmvfc_npiv_login_mad { 136 struct ibmvfc_mad_common common; 137 struct srp_direct_buf buffer; 138 }__attribute__((packed, aligned (8))); 139 140 #define IBMVFC_MAX_NAME 256 141 142 struct ibmvfc_npiv_login { 143 u32 ostype; 144 #define IBMVFC_OS_LINUX 0x02 145 u32 pad; 146 u64 max_dma_len; 147 u32 max_payload; 148 u32 max_response; 149 u32 partition_num; 150 u32 vfc_frame_version; 151 u16 fcp_version; 152 u16 flags; 153 #define IBMVFC_CLIENT_MIGRATED 0x01 154 #define IBMVFC_FLUSH_ON_HALT 0x02 155 u32 max_cmds; 156 u64 capabilities; 157 #define IBMVFC_CAN_MIGRATE 0x01 158 u64 node_name; 159 struct srp_direct_buf async; 160 u8 partition_name[IBMVFC_MAX_NAME]; 161 u8 device_name[IBMVFC_MAX_NAME]; 162 u8 drc_name[IBMVFC_MAX_NAME]; 163 u64 reserved2[2]; 164 }__attribute__((packed, aligned (8))); 165 166 struct ibmvfc_common_svc_parms { 167 u16 fcph_version; 168 u16 b2b_credit; 169 u16 features; 170 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 171 u32 ratov; 172 u32 edtov; 173 }__attribute__((packed, aligned (4))); 174 175 struct ibmvfc_service_parms { 176 struct ibmvfc_common_svc_parms common; 177 u8 port_name[8]; 178 u8 node_name[8]; 179 u32 class1_parms[4]; 180 u32 class2_parms[4]; 181 u32 class3_parms[4]; 182 u32 obsolete[4]; 183 u32 vendor_version[4]; 184 u32 services_avail[2]; 185 u32 ext_len; 186 u32 reserved[30]; 187 u32 clk_sync_qos[2]; 188 }__attribute__((packed, aligned (4))); 189 190 struct ibmvfc_npiv_login_resp { 191 u32 version; 192 u16 status; 193 u16 error; 194 u32 flags; 195 #define IBMVFC_NATIVE_FC 0x01 196 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 197 u32 reserved; 198 u64 capabilites; 199 u32 max_cmds; 200 u32 scsi_id_sz; 201 u64 max_dma_len; 202 u64 scsi_id; 203 u64 port_name; 204 u64 node_name; 205 u64 link_speed; 206 u8 partition_name[IBMVFC_MAX_NAME]; 207 u8 device_name[IBMVFC_MAX_NAME]; 208 u8 port_loc_code[IBMVFC_MAX_NAME]; 209 u8 drc_name[IBMVFC_MAX_NAME]; 210 struct ibmvfc_service_parms service_parms; 211 u64 reserved2; 212 }__attribute__((packed, aligned (8))); 213 214 union ibmvfc_npiv_login_data { 215 struct ibmvfc_npiv_login login; 216 struct ibmvfc_npiv_login_resp resp; 217 }__attribute__((packed, aligned (8))); 218 219 struct ibmvfc_discover_targets_buf { 220 u32 scsi_id[1]; 221 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 222 }; 223 224 struct ibmvfc_discover_targets { 225 struct ibmvfc_mad_common common; 226 struct srp_direct_buf buffer; 227 u32 flags; 228 u16 status; 229 u16 error; 230 u32 bufflen; 231 u32 num_avail; 232 u32 num_written; 233 u64 reserved[2]; 234 }__attribute__((packed, aligned (8))); 235 236 enum ibmvfc_fc_reason { 237 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 238 IBMVFC_INVALID_VERSION = 0x02, 239 IBMVFC_LOGICAL_ERROR = 0x03, 240 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 241 IBMVFC_LOGICAL_BUSY = 0x05, 242 IBMVFC_PROTOCOL_ERROR = 0x07, 243 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 244 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 245 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 246 IBMVFC_CMD_IN_PROGRESS = 0x0E, 247 IBMVFC_VENDOR_SPECIFIC = 0xFF, 248 }; 249 250 enum ibmvfc_fc_type { 251 IBMVFC_FABRIC_REJECT = 0x01, 252 IBMVFC_PORT_REJECT = 0x02, 253 IBMVFC_LS_REJECT = 0x03, 254 IBMVFC_FABRIC_BUSY = 0x04, 255 IBMVFC_PORT_BUSY = 0x05, 256 IBMVFC_BASIC_REJECT = 0x06, 257 }; 258 259 enum ibmvfc_gs_explain { 260 IBMVFC_PORT_NAME_NOT_REG = 0x02, 261 }; 262 263 struct ibmvfc_port_login { 264 struct ibmvfc_mad_common common; 265 u64 scsi_id; 266 u16 reserved; 267 u16 fc_service_class; 268 u32 blksz; 269 u32 hdr_per_blk; 270 u16 status; 271 u16 error; /* also fc_reason */ 272 u16 fc_explain; 273 u16 fc_type; 274 u32 reserved2; 275 struct ibmvfc_service_parms service_parms; 276 struct ibmvfc_service_parms service_parms_change; 277 u64 reserved3[2]; 278 }__attribute__((packed, aligned (8))); 279 280 struct ibmvfc_prli_svc_parms { 281 u8 type; 282 #define IBMVFC_SCSI_FCP_TYPE 0x08 283 u8 type_ext; 284 u16 flags; 285 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 286 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 287 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 288 u32 orig_pa; 289 u32 resp_pa; 290 u32 service_parms; 291 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 292 #define IBMVFC_PRLI_RETRY 0x00000100 293 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 294 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 295 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 296 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 297 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 298 }__attribute__((packed, aligned (4))); 299 300 struct ibmvfc_process_login { 301 struct ibmvfc_mad_common common; 302 u64 scsi_id; 303 struct ibmvfc_prli_svc_parms parms; 304 u8 reserved[48]; 305 u16 status; 306 u16 error; /* also fc_reason */ 307 u32 reserved2; 308 u64 reserved3[2]; 309 }__attribute__((packed, aligned (8))); 310 311 struct ibmvfc_query_tgt { 312 struct ibmvfc_mad_common common; 313 u64 wwpn; 314 u64 scsi_id; 315 u16 status; 316 u16 error; 317 u16 fc_explain; 318 u16 fc_type; 319 u64 reserved[2]; 320 }__attribute__((packed, aligned (8))); 321 322 struct ibmvfc_implicit_logout { 323 struct ibmvfc_mad_common common; 324 u64 old_scsi_id; 325 u64 reserved[2]; 326 }__attribute__((packed, aligned (8))); 327 328 struct ibmvfc_tmf { 329 struct ibmvfc_mad_common common; 330 u64 scsi_id; 331 struct scsi_lun lun; 332 u32 flags; 333 #define IBMVFC_TMF_ABORT_TASK 0x02 334 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 335 #define IBMVFC_TMF_LUN_RESET 0x10 336 #define IBMVFC_TMF_TGT_RESET 0x20 337 #define IBMVFC_TMF_LUA_VALID 0x40 338 u32 cancel_key; 339 u32 my_cancel_key; 340 #define IBMVFC_TMF_CANCEL_KEY 0x80000000 341 u32 pad; 342 u64 reserved[2]; 343 }__attribute__((packed, aligned (8))); 344 345 enum ibmvfc_fcp_rsp_info_codes { 346 RSP_NO_FAILURE = 0x00, 347 RSP_TMF_REJECTED = 0x04, 348 RSP_TMF_FAILED = 0x05, 349 RSP_TMF_INVALID_LUN = 0x09, 350 }; 351 352 struct ibmvfc_fcp_rsp_info { 353 u16 reserved; 354 u8 rsp_code; 355 u8 reserved2[4]; 356 }__attribute__((packed, aligned (2))); 357 358 enum ibmvfc_fcp_rsp_flags { 359 FCP_BIDI_RSP = 0x80, 360 FCP_BIDI_READ_RESID_UNDER = 0x40, 361 FCP_BIDI_READ_RESID_OVER = 0x20, 362 FCP_CONF_REQ = 0x10, 363 FCP_RESID_UNDER = 0x08, 364 FCP_RESID_OVER = 0x04, 365 FCP_SNS_LEN_VALID = 0x02, 366 FCP_RSP_LEN_VALID = 0x01, 367 }; 368 369 union ibmvfc_fcp_rsp_data { 370 struct ibmvfc_fcp_rsp_info info; 371 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 372 }__attribute__((packed, aligned (8))); 373 374 struct ibmvfc_fcp_rsp { 375 u64 reserved; 376 u16 retry_delay_timer; 377 u8 flags; 378 u8 scsi_status; 379 u32 fcp_resid; 380 u32 fcp_sense_len; 381 u32 fcp_rsp_len; 382 union ibmvfc_fcp_rsp_data data; 383 }__attribute__((packed, aligned (8))); 384 385 enum ibmvfc_cmd_flags { 386 IBMVFC_SCATTERLIST = 0x0001, 387 IBMVFC_NO_MEM_DESC = 0x0002, 388 IBMVFC_READ = 0x0004, 389 IBMVFC_WRITE = 0x0008, 390 IBMVFC_TMF = 0x0080, 391 IBMVFC_CLASS_3_ERR = 0x0100, 392 }; 393 394 enum ibmvfc_fc_task_attr { 395 IBMVFC_SIMPLE_TASK = 0x00, 396 IBMVFC_HEAD_OF_QUEUE = 0x01, 397 IBMVFC_ORDERED_TASK = 0x02, 398 IBMVFC_ACA_TASK = 0x04, 399 }; 400 401 enum ibmvfc_fc_tmf_flags { 402 IBMVFC_ABORT_TASK_SET = 0x02, 403 IBMVFC_LUN_RESET = 0x10, 404 IBMVFC_TARGET_RESET = 0x20, 405 }; 406 407 struct ibmvfc_fcp_cmd_iu { 408 struct scsi_lun lun; 409 u8 crn; 410 u8 pri_task_attr; 411 u8 tmf_flags; 412 u8 add_cdb_len; 413 #define IBMVFC_RDDATA 0x02 414 #define IBMVFC_WRDATA 0x01 415 u8 cdb[IBMVFC_MAX_CDB_LEN]; 416 u32 xfer_len; 417 }__attribute__((packed, aligned (4))); 418 419 struct ibmvfc_cmd { 420 u64 task_tag; 421 u32 frame_type; 422 u32 payload_len; 423 u32 resp_len; 424 u32 adapter_resid; 425 u16 status; 426 u16 error; 427 u16 flags; 428 u16 response_flags; 429 #define IBMVFC_ADAPTER_RESID_VALID 0x01 430 u32 cancel_key; 431 u32 exchange_id; 432 struct srp_direct_buf ext_func; 433 struct srp_direct_buf ioba; 434 struct srp_direct_buf resp; 435 u64 correlation; 436 u64 tgt_scsi_id; 437 u64 tag; 438 u64 reserved3[2]; 439 struct ibmvfc_fcp_cmd_iu iu; 440 struct ibmvfc_fcp_rsp rsp; 441 }__attribute__((packed, aligned (8))); 442 443 struct ibmvfc_passthru_fc_iu { 444 u32 payload[7]; 445 #define IBMVFC_ADISC 0x52000000 446 u32 response[7]; 447 }; 448 449 struct ibmvfc_passthru_iu { 450 u64 task_tag; 451 u32 cmd_len; 452 u32 rsp_len; 453 u16 status; 454 u16 error; 455 u32 flags; 456 #define IBMVFC_FC_ELS 0x01 457 u32 cancel_key; 458 u32 reserved; 459 struct srp_direct_buf cmd; 460 struct srp_direct_buf rsp; 461 u64 correlation; 462 u64 scsi_id; 463 u64 tag; 464 u64 reserved2[2]; 465 }__attribute__((packed, aligned (8))); 466 467 struct ibmvfc_passthru_mad { 468 struct ibmvfc_mad_common common; 469 struct srp_direct_buf cmd_ioba; 470 struct ibmvfc_passthru_iu iu; 471 struct ibmvfc_passthru_fc_iu fc_iu; 472 }__attribute__((packed, aligned (8))); 473 474 struct ibmvfc_trace_start_entry { 475 u32 xfer_len; 476 }__attribute__((packed)); 477 478 struct ibmvfc_trace_end_entry { 479 u16 status; 480 u16 error; 481 u8 fcp_rsp_flags; 482 u8 rsp_code; 483 u8 scsi_status; 484 u8 reserved; 485 }__attribute__((packed)); 486 487 struct ibmvfc_trace_entry { 488 struct ibmvfc_event *evt; 489 u32 time; 490 u32 scsi_id; 491 u32 lun; 492 u8 fmt; 493 u8 op_code; 494 u8 tmf_flags; 495 u8 type; 496 #define IBMVFC_TRC_START 0x00 497 #define IBMVFC_TRC_END 0xff 498 union { 499 struct ibmvfc_trace_start_entry start; 500 struct ibmvfc_trace_end_entry end; 501 } u; 502 }__attribute__((packed, aligned (8))); 503 504 enum ibmvfc_crq_formats { 505 IBMVFC_CMD_FORMAT = 0x01, 506 IBMVFC_ASYNC_EVENT = 0x02, 507 IBMVFC_MAD_FORMAT = 0x04, 508 }; 509 510 enum ibmvfc_async_event { 511 IBMVFC_AE_ELS_PLOGI = 0x0001, 512 IBMVFC_AE_ELS_LOGO = 0x0002, 513 IBMVFC_AE_ELS_PRLO = 0x0004, 514 IBMVFC_AE_SCN_NPORT = 0x0008, 515 IBMVFC_AE_SCN_GROUP = 0x0010, 516 IBMVFC_AE_SCN_DOMAIN = 0x0020, 517 IBMVFC_AE_SCN_FABRIC = 0x0040, 518 IBMVFC_AE_LINK_UP = 0x0080, 519 IBMVFC_AE_LINK_DOWN = 0x0100, 520 IBMVFC_AE_LINK_DEAD = 0x0200, 521 IBMVFC_AE_HALT = 0x0400, 522 IBMVFC_AE_RESUME = 0x0800, 523 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 524 }; 525 526 struct ibmvfc_crq { 527 u8 valid; 528 u8 format; 529 u8 reserved[6]; 530 u64 ioba; 531 }__attribute__((packed, aligned (8))); 532 533 struct ibmvfc_crq_queue { 534 struct ibmvfc_crq *msgs; 535 int size, cur; 536 dma_addr_t msg_token; 537 }; 538 539 struct ibmvfc_async_crq { 540 u8 valid; 541 u8 pad[3]; 542 u32 pad2; 543 u64 event; 544 u64 scsi_id; 545 u64 wwpn; 546 u64 node_name; 547 u64 reserved; 548 }__attribute__((packed, aligned (8))); 549 550 struct ibmvfc_async_crq_queue { 551 struct ibmvfc_async_crq *msgs; 552 int size, cur; 553 dma_addr_t msg_token; 554 }; 555 556 union ibmvfc_iu { 557 struct ibmvfc_mad_common mad_common; 558 struct ibmvfc_npiv_login_mad npiv_login; 559 struct ibmvfc_discover_targets discover_targets; 560 struct ibmvfc_port_login plogi; 561 struct ibmvfc_process_login prli; 562 struct ibmvfc_query_tgt query_tgt; 563 struct ibmvfc_implicit_logout implicit_logout; 564 struct ibmvfc_tmf tmf; 565 struct ibmvfc_cmd cmd; 566 struct ibmvfc_passthru_mad passthru; 567 }__attribute__((packed, aligned (8))); 568 569 enum ibmvfc_target_action { 570 IBMVFC_TGT_ACTION_NONE = 0, 571 IBMVFC_TGT_ACTION_INIT, 572 IBMVFC_TGT_ACTION_INIT_WAIT, 573 IBMVFC_TGT_ACTION_ADD_RPORT, 574 IBMVFC_TGT_ACTION_DEL_RPORT, 575 }; 576 577 struct ibmvfc_target { 578 struct list_head queue; 579 struct ibmvfc_host *vhost; 580 u64 scsi_id; 581 u64 new_scsi_id; 582 struct fc_rport *rport; 583 int target_id; 584 enum ibmvfc_target_action action; 585 int need_login; 586 int init_retries; 587 struct ibmvfc_service_parms service_parms; 588 struct ibmvfc_service_parms service_parms_change; 589 struct fc_rport_identifiers ids; 590 void (*job_step) (struct ibmvfc_target *); 591 struct kref kref; 592 }; 593 594 /* a unit of work for the hosting partition */ 595 struct ibmvfc_event { 596 struct list_head queue; 597 struct ibmvfc_host *vhost; 598 struct ibmvfc_target *tgt; 599 struct scsi_cmnd *cmnd; 600 atomic_t free; 601 union ibmvfc_iu *xfer_iu; 602 void (*done) (struct ibmvfc_event *); 603 struct ibmvfc_crq crq; 604 union ibmvfc_iu iu; 605 union ibmvfc_iu *sync_iu; 606 struct srp_direct_buf *ext_list; 607 dma_addr_t ext_list_token; 608 struct completion comp; 609 struct timer_list timer; 610 }; 611 612 /* a pool of event structs for use */ 613 struct ibmvfc_event_pool { 614 struct ibmvfc_event *events; 615 u32 size; 616 union ibmvfc_iu *iu_storage; 617 dma_addr_t iu_token; 618 }; 619 620 enum ibmvfc_host_action { 621 IBMVFC_HOST_ACTION_NONE = 0, 622 IBMVFC_HOST_ACTION_INIT, 623 IBMVFC_HOST_ACTION_INIT_WAIT, 624 IBMVFC_HOST_ACTION_QUERY, 625 IBMVFC_HOST_ACTION_QUERY_TGTS, 626 IBMVFC_HOST_ACTION_TGT_DEL, 627 IBMVFC_HOST_ACTION_ALLOC_TGTS, 628 IBMVFC_HOST_ACTION_TGT_INIT, 629 IBMVFC_HOST_ACTION_TGT_ADD, 630 }; 631 632 enum ibmvfc_host_state { 633 IBMVFC_NO_CRQ = 0, 634 IBMVFC_INITIALIZING, 635 IBMVFC_ACTIVE, 636 IBMVFC_HALTED, 637 IBMVFC_LINK_DOWN, 638 IBMVFC_LINK_DEAD, 639 IBMVFC_HOST_OFFLINE, 640 }; 641 642 struct ibmvfc_host { 643 char name[8]; 644 struct list_head queue; 645 struct Scsi_Host *host; 646 enum ibmvfc_host_state state; 647 enum ibmvfc_host_action action; 648 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 649 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 650 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 651 struct ibmvfc_trace_entry *trace; 652 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 653 int num_targets; 654 struct list_head targets; 655 struct list_head sent; 656 struct list_head free; 657 struct device *dev; 658 struct ibmvfc_event_pool pool; 659 struct dma_pool *sg_pool; 660 mempool_t *tgt_pool; 661 struct ibmvfc_crq_queue crq; 662 struct ibmvfc_async_crq_queue async_crq; 663 struct ibmvfc_npiv_login login_info; 664 union ibmvfc_npiv_login_data *login_buf; 665 dma_addr_t login_buf_dma; 666 int disc_buf_sz; 667 int log_level; 668 struct ibmvfc_discover_targets_buf *disc_buf; 669 int task_set; 670 int init_retries; 671 int discovery_threads; 672 int client_migrated; 673 int reinit; 674 int events_to_log; 675 #define IBMVFC_AE_LINKUP 0x0001 676 #define IBMVFC_AE_LINKDOWN 0x0002 677 #define IBMVFC_AE_RSCN 0x0004 678 dma_addr_t disc_buf_dma; 679 unsigned int partition_number; 680 char partition_name[97]; 681 void (*job_step) (struct ibmvfc_host *); 682 struct task_struct *work_thread; 683 wait_queue_head_t init_wait_q; 684 wait_queue_head_t work_wait_q; 685 }; 686 687 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 688 689 #define tgt_dbg(t, fmt, ...) \ 690 DBG_CMD(dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 691 692 #define tgt_info(t, fmt, ...) \ 693 dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 694 695 #define tgt_err(t, fmt, ...) \ 696 dev_err((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 697 698 #define ibmvfc_dbg(vhost, ...) \ 699 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 700 701 #define ibmvfc_log(vhost, level, ...) \ 702 do { \ 703 if (level >= (vhost)->log_level) \ 704 dev_err((vhost)->dev, ##__VA_ARGS__); \ 705 } while (0) 706 707 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 708 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 709 710 #ifdef CONFIG_SCSI_IBMVFC_TRACE 711 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 712 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 713 #else 714 #define ibmvfc_create_trace_file(kobj, attr) 0 715 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 716 #endif 717 718 #endif 719