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 "1.0.6" 33 #define IBMVFC_DRIVER_DATE "(May 28, 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 each discovery thread 62 */ 63 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + (disc_threads * 2)) 64 65 #define IBMVFC_MAD_SUCCESS 0x00 66 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 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_format { 78 IBMVFC_CRQ_INIT = 0x01, 79 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 80 IBMVFC_PARTITION_MIGRATED = 0x06, 81 }; 82 83 enum ibmvfc_cmd_status_flags { 84 IBMVFC_FABRIC_MAPPED = 0x0001, 85 IBMVFC_VIOS_FAILURE = 0x0002, 86 IBMVFC_FC_FAILURE = 0x0004, 87 IBMVFC_FC_SCSI_ERROR = 0x0008, 88 IBMVFC_HW_EVENT_LOGGED = 0x0010, 89 IBMVFC_VIOS_LOGGED = 0x0020, 90 }; 91 92 enum ibmvfc_fabric_mapped_errors { 93 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 94 IBMVFC_XPORT_FAULT = 0x0002, 95 IBMVFC_CMD_TIMEOUT = 0x0003, 96 IBMVFC_ENETDOWN = 0x0004, 97 IBMVFC_HW_FAILURE = 0x0005, 98 IBMVFC_LINK_DOWN_ERR = 0x0006, 99 IBMVFC_LINK_DEAD_ERR = 0x0007, 100 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 101 IBMVFC_XPORT_BUSY = 0x000A, 102 IBMVFC_XPORT_DEAD = 0x000B, 103 IBMVFC_CONFIG_ERROR = 0x000C, 104 IBMVFC_NAME_SERVER_FAIL = 0x000D, 105 IBMVFC_LINK_HALTED = 0x000E, 106 IBMVFC_XPORT_GENERAL = 0x8000, 107 }; 108 109 enum ibmvfc_vios_errors { 110 IBMVFC_CRQ_FAILURE = 0x0001, 111 IBMVFC_SW_FAILURE = 0x0002, 112 IBMVFC_INVALID_PARAMETER = 0x0003, 113 IBMVFC_MISSING_PARAMETER = 0x0004, 114 IBMVFC_HOST_IO_BUS = 0x0005, 115 IBMVFC_TRANS_CANCELLED = 0x0006, 116 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 117 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 118 IBMVFC_PLOGI_REQUIRED = 0x0010, 119 IBMVFC_COMMAND_FAILED = 0x8000, 120 }; 121 122 enum ibmvfc_mad_types { 123 IBMVFC_NPIV_LOGIN = 0x0001, 124 IBMVFC_DISC_TARGETS = 0x0002, 125 IBMVFC_PORT_LOGIN = 0x0004, 126 IBMVFC_PROCESS_LOGIN = 0x0008, 127 IBMVFC_QUERY_TARGET = 0x0010, 128 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 129 IBMVFC_PASSTHRU = 0x0200, 130 IBMVFC_TMF_MAD = 0x0100, 131 IBMVFC_NPIV_LOGOUT = 0x0800, 132 }; 133 134 struct ibmvfc_mad_common { 135 u32 version; 136 u32 reserved; 137 u32 opcode; 138 u16 status; 139 u16 length; 140 u64 tag; 141 }__attribute__((packed, aligned (8))); 142 143 struct ibmvfc_npiv_login_mad { 144 struct ibmvfc_mad_common common; 145 struct srp_direct_buf buffer; 146 }__attribute__((packed, aligned (8))); 147 148 struct ibmvfc_npiv_logout_mad { 149 struct ibmvfc_mad_common common; 150 }__attribute__((packed, aligned (8))); 151 152 #define IBMVFC_MAX_NAME 256 153 154 struct ibmvfc_npiv_login { 155 u32 ostype; 156 #define IBMVFC_OS_LINUX 0x02 157 u32 pad; 158 u64 max_dma_len; 159 u32 max_payload; 160 u32 max_response; 161 u32 partition_num; 162 u32 vfc_frame_version; 163 u16 fcp_version; 164 u16 flags; 165 #define IBMVFC_CLIENT_MIGRATED 0x01 166 #define IBMVFC_FLUSH_ON_HALT 0x02 167 u32 max_cmds; 168 u64 capabilities; 169 #define IBMVFC_CAN_MIGRATE 0x01 170 u64 node_name; 171 struct srp_direct_buf async; 172 u8 partition_name[IBMVFC_MAX_NAME]; 173 u8 device_name[IBMVFC_MAX_NAME]; 174 u8 drc_name[IBMVFC_MAX_NAME]; 175 u64 reserved2[2]; 176 }__attribute__((packed, aligned (8))); 177 178 struct ibmvfc_common_svc_parms { 179 u16 fcph_version; 180 u16 b2b_credit; 181 u16 features; 182 u16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 183 u32 ratov; 184 u32 edtov; 185 }__attribute__((packed, aligned (4))); 186 187 struct ibmvfc_service_parms { 188 struct ibmvfc_common_svc_parms common; 189 u8 port_name[8]; 190 u8 node_name[8]; 191 u32 class1_parms[4]; 192 u32 class2_parms[4]; 193 u32 class3_parms[4]; 194 u32 obsolete[4]; 195 u32 vendor_version[4]; 196 u32 services_avail[2]; 197 u32 ext_len; 198 u32 reserved[30]; 199 u32 clk_sync_qos[2]; 200 }__attribute__((packed, aligned (4))); 201 202 struct ibmvfc_npiv_login_resp { 203 u32 version; 204 u16 status; 205 u16 error; 206 u32 flags; 207 #define IBMVFC_NATIVE_FC 0x01 208 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 209 u32 reserved; 210 u64 capabilities; 211 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 212 u32 max_cmds; 213 u32 scsi_id_sz; 214 u64 max_dma_len; 215 u64 scsi_id; 216 u64 port_name; 217 u64 node_name; 218 u64 link_speed; 219 u8 partition_name[IBMVFC_MAX_NAME]; 220 u8 device_name[IBMVFC_MAX_NAME]; 221 u8 port_loc_code[IBMVFC_MAX_NAME]; 222 u8 drc_name[IBMVFC_MAX_NAME]; 223 struct ibmvfc_service_parms service_parms; 224 u64 reserved2; 225 }__attribute__((packed, aligned (8))); 226 227 union ibmvfc_npiv_login_data { 228 struct ibmvfc_npiv_login login; 229 struct ibmvfc_npiv_login_resp resp; 230 }__attribute__((packed, aligned (8))); 231 232 struct ibmvfc_discover_targets_buf { 233 u32 scsi_id[1]; 234 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 235 }; 236 237 struct ibmvfc_discover_targets { 238 struct ibmvfc_mad_common common; 239 struct srp_direct_buf buffer; 240 u32 flags; 241 u16 status; 242 u16 error; 243 u32 bufflen; 244 u32 num_avail; 245 u32 num_written; 246 u64 reserved[2]; 247 }__attribute__((packed, aligned (8))); 248 249 enum ibmvfc_fc_reason { 250 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 251 IBMVFC_INVALID_VERSION = 0x02, 252 IBMVFC_LOGICAL_ERROR = 0x03, 253 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 254 IBMVFC_LOGICAL_BUSY = 0x05, 255 IBMVFC_PROTOCOL_ERROR = 0x07, 256 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 257 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 258 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 259 IBMVFC_CMD_IN_PROGRESS = 0x0E, 260 IBMVFC_VENDOR_SPECIFIC = 0xFF, 261 }; 262 263 enum ibmvfc_fc_type { 264 IBMVFC_FABRIC_REJECT = 0x01, 265 IBMVFC_PORT_REJECT = 0x02, 266 IBMVFC_LS_REJECT = 0x03, 267 IBMVFC_FABRIC_BUSY = 0x04, 268 IBMVFC_PORT_BUSY = 0x05, 269 IBMVFC_BASIC_REJECT = 0x06, 270 }; 271 272 enum ibmvfc_gs_explain { 273 IBMVFC_PORT_NAME_NOT_REG = 0x02, 274 }; 275 276 struct ibmvfc_port_login { 277 struct ibmvfc_mad_common common; 278 u64 scsi_id; 279 u16 reserved; 280 u16 fc_service_class; 281 u32 blksz; 282 u32 hdr_per_blk; 283 u16 status; 284 u16 error; /* also fc_reason */ 285 u16 fc_explain; 286 u16 fc_type; 287 u32 reserved2; 288 struct ibmvfc_service_parms service_parms; 289 struct ibmvfc_service_parms service_parms_change; 290 u64 reserved3[2]; 291 }__attribute__((packed, aligned (8))); 292 293 struct ibmvfc_prli_svc_parms { 294 u8 type; 295 #define IBMVFC_SCSI_FCP_TYPE 0x08 296 u8 type_ext; 297 u16 flags; 298 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 299 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 300 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 301 u32 orig_pa; 302 u32 resp_pa; 303 u32 service_parms; 304 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 305 #define IBMVFC_PRLI_RETRY 0x00000100 306 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 307 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 308 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 309 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 310 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 311 }__attribute__((packed, aligned (4))); 312 313 struct ibmvfc_process_login { 314 struct ibmvfc_mad_common common; 315 u64 scsi_id; 316 struct ibmvfc_prli_svc_parms parms; 317 u8 reserved[48]; 318 u16 status; 319 u16 error; /* also fc_reason */ 320 u32 reserved2; 321 u64 reserved3[2]; 322 }__attribute__((packed, aligned (8))); 323 324 struct ibmvfc_query_tgt { 325 struct ibmvfc_mad_common common; 326 u64 wwpn; 327 u64 scsi_id; 328 u16 status; 329 u16 error; 330 u16 fc_explain; 331 u16 fc_type; 332 u64 reserved[2]; 333 }__attribute__((packed, aligned (8))); 334 335 struct ibmvfc_implicit_logout { 336 struct ibmvfc_mad_common common; 337 u64 old_scsi_id; 338 u64 reserved[2]; 339 }__attribute__((packed, aligned (8))); 340 341 struct ibmvfc_tmf { 342 struct ibmvfc_mad_common common; 343 u64 scsi_id; 344 struct scsi_lun lun; 345 u32 flags; 346 #define IBMVFC_TMF_ABORT_TASK 0x02 347 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 348 #define IBMVFC_TMF_LUN_RESET 0x10 349 #define IBMVFC_TMF_TGT_RESET 0x20 350 #define IBMVFC_TMF_LUA_VALID 0x40 351 u32 cancel_key; 352 u32 my_cancel_key; 353 u32 pad; 354 u64 reserved[2]; 355 }__attribute__((packed, aligned (8))); 356 357 enum ibmvfc_fcp_rsp_info_codes { 358 RSP_NO_FAILURE = 0x00, 359 RSP_TMF_REJECTED = 0x04, 360 RSP_TMF_FAILED = 0x05, 361 RSP_TMF_INVALID_LUN = 0x09, 362 }; 363 364 struct ibmvfc_fcp_rsp_info { 365 u16 reserved; 366 u8 rsp_code; 367 u8 reserved2[4]; 368 }__attribute__((packed, aligned (2))); 369 370 enum ibmvfc_fcp_rsp_flags { 371 FCP_BIDI_RSP = 0x80, 372 FCP_BIDI_READ_RESID_UNDER = 0x40, 373 FCP_BIDI_READ_RESID_OVER = 0x20, 374 FCP_CONF_REQ = 0x10, 375 FCP_RESID_UNDER = 0x08, 376 FCP_RESID_OVER = 0x04, 377 FCP_SNS_LEN_VALID = 0x02, 378 FCP_RSP_LEN_VALID = 0x01, 379 }; 380 381 union ibmvfc_fcp_rsp_data { 382 struct ibmvfc_fcp_rsp_info info; 383 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 384 }__attribute__((packed, aligned (8))); 385 386 struct ibmvfc_fcp_rsp { 387 u64 reserved; 388 u16 retry_delay_timer; 389 u8 flags; 390 u8 scsi_status; 391 u32 fcp_resid; 392 u32 fcp_sense_len; 393 u32 fcp_rsp_len; 394 union ibmvfc_fcp_rsp_data data; 395 }__attribute__((packed, aligned (8))); 396 397 enum ibmvfc_cmd_flags { 398 IBMVFC_SCATTERLIST = 0x0001, 399 IBMVFC_NO_MEM_DESC = 0x0002, 400 IBMVFC_READ = 0x0004, 401 IBMVFC_WRITE = 0x0008, 402 IBMVFC_TMF = 0x0080, 403 IBMVFC_CLASS_3_ERR = 0x0100, 404 }; 405 406 enum ibmvfc_fc_task_attr { 407 IBMVFC_SIMPLE_TASK = 0x00, 408 IBMVFC_HEAD_OF_QUEUE = 0x01, 409 IBMVFC_ORDERED_TASK = 0x02, 410 IBMVFC_ACA_TASK = 0x04, 411 }; 412 413 enum ibmvfc_fc_tmf_flags { 414 IBMVFC_ABORT_TASK_SET = 0x02, 415 IBMVFC_LUN_RESET = 0x10, 416 IBMVFC_TARGET_RESET = 0x20, 417 }; 418 419 struct ibmvfc_fcp_cmd_iu { 420 struct scsi_lun lun; 421 u8 crn; 422 u8 pri_task_attr; 423 u8 tmf_flags; 424 u8 add_cdb_len; 425 #define IBMVFC_RDDATA 0x02 426 #define IBMVFC_WRDATA 0x01 427 u8 cdb[IBMVFC_MAX_CDB_LEN]; 428 u32 xfer_len; 429 }__attribute__((packed, aligned (4))); 430 431 struct ibmvfc_cmd { 432 u64 task_tag; 433 u32 frame_type; 434 u32 payload_len; 435 u32 resp_len; 436 u32 adapter_resid; 437 u16 status; 438 u16 error; 439 u16 flags; 440 u16 response_flags; 441 #define IBMVFC_ADAPTER_RESID_VALID 0x01 442 u32 cancel_key; 443 u32 exchange_id; 444 struct srp_direct_buf ext_func; 445 struct srp_direct_buf ioba; 446 struct srp_direct_buf resp; 447 u64 correlation; 448 u64 tgt_scsi_id; 449 u64 tag; 450 u64 reserved3[2]; 451 struct ibmvfc_fcp_cmd_iu iu; 452 struct ibmvfc_fcp_rsp rsp; 453 }__attribute__((packed, aligned (8))); 454 455 struct ibmvfc_passthru_fc_iu { 456 u32 payload[7]; 457 #define IBMVFC_ADISC 0x52000000 458 u32 response[7]; 459 }; 460 461 struct ibmvfc_passthru_iu { 462 u64 task_tag; 463 u32 cmd_len; 464 u32 rsp_len; 465 u16 status; 466 u16 error; 467 u32 flags; 468 #define IBMVFC_FC_ELS 0x01 469 u32 cancel_key; 470 u32 reserved; 471 struct srp_direct_buf cmd; 472 struct srp_direct_buf rsp; 473 u64 correlation; 474 u64 scsi_id; 475 u64 tag; 476 u64 reserved2[2]; 477 }__attribute__((packed, aligned (8))); 478 479 struct ibmvfc_passthru_mad { 480 struct ibmvfc_mad_common common; 481 struct srp_direct_buf cmd_ioba; 482 struct ibmvfc_passthru_iu iu; 483 struct ibmvfc_passthru_fc_iu fc_iu; 484 }__attribute__((packed, aligned (8))); 485 486 struct ibmvfc_trace_start_entry { 487 u32 xfer_len; 488 }__attribute__((packed)); 489 490 struct ibmvfc_trace_end_entry { 491 u16 status; 492 u16 error; 493 u8 fcp_rsp_flags; 494 u8 rsp_code; 495 u8 scsi_status; 496 u8 reserved; 497 }__attribute__((packed)); 498 499 struct ibmvfc_trace_entry { 500 struct ibmvfc_event *evt; 501 u32 time; 502 u32 scsi_id; 503 u32 lun; 504 u8 fmt; 505 u8 op_code; 506 u8 tmf_flags; 507 u8 type; 508 #define IBMVFC_TRC_START 0x00 509 #define IBMVFC_TRC_END 0xff 510 union { 511 struct ibmvfc_trace_start_entry start; 512 struct ibmvfc_trace_end_entry end; 513 } u; 514 }__attribute__((packed, aligned (8))); 515 516 enum ibmvfc_crq_formats { 517 IBMVFC_CMD_FORMAT = 0x01, 518 IBMVFC_ASYNC_EVENT = 0x02, 519 IBMVFC_MAD_FORMAT = 0x04, 520 }; 521 522 enum ibmvfc_async_event { 523 IBMVFC_AE_ELS_PLOGI = 0x0001, 524 IBMVFC_AE_ELS_LOGO = 0x0002, 525 IBMVFC_AE_ELS_PRLO = 0x0004, 526 IBMVFC_AE_SCN_NPORT = 0x0008, 527 IBMVFC_AE_SCN_GROUP = 0x0010, 528 IBMVFC_AE_SCN_DOMAIN = 0x0020, 529 IBMVFC_AE_SCN_FABRIC = 0x0040, 530 IBMVFC_AE_LINK_UP = 0x0080, 531 IBMVFC_AE_LINK_DOWN = 0x0100, 532 IBMVFC_AE_LINK_DEAD = 0x0200, 533 IBMVFC_AE_HALT = 0x0400, 534 IBMVFC_AE_RESUME = 0x0800, 535 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 536 }; 537 538 struct ibmvfc_crq { 539 volatile u8 valid; 540 volatile u8 format; 541 u8 reserved[6]; 542 volatile u64 ioba; 543 }__attribute__((packed, aligned (8))); 544 545 struct ibmvfc_crq_queue { 546 struct ibmvfc_crq *msgs; 547 int size, cur; 548 dma_addr_t msg_token; 549 }; 550 551 enum ibmvfc_ae_link_state { 552 IBMVFC_AE_LS_LINK_UP = 0x01, 553 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 554 IBMVFC_AE_LS_LINK_DOWN = 0x04, 555 IBMVFC_AE_LS_LINK_DEAD = 0x08, 556 }; 557 558 struct ibmvfc_async_crq { 559 volatile u8 valid; 560 u8 link_state; 561 u8 pad[2]; 562 u32 pad2; 563 volatile u64 event; 564 volatile u64 scsi_id; 565 volatile u64 wwpn; 566 volatile u64 node_name; 567 u64 reserved; 568 }__attribute__((packed, aligned (8))); 569 570 struct ibmvfc_async_crq_queue { 571 struct ibmvfc_async_crq *msgs; 572 int size, cur; 573 dma_addr_t msg_token; 574 }; 575 576 union ibmvfc_iu { 577 struct ibmvfc_mad_common mad_common; 578 struct ibmvfc_npiv_login_mad npiv_login; 579 struct ibmvfc_npiv_logout_mad npiv_logout; 580 struct ibmvfc_discover_targets discover_targets; 581 struct ibmvfc_port_login plogi; 582 struct ibmvfc_process_login prli; 583 struct ibmvfc_query_tgt query_tgt; 584 struct ibmvfc_implicit_logout implicit_logout; 585 struct ibmvfc_tmf tmf; 586 struct ibmvfc_cmd cmd; 587 struct ibmvfc_passthru_mad passthru; 588 }__attribute__((packed, aligned (8))); 589 590 enum ibmvfc_target_action { 591 IBMVFC_TGT_ACTION_NONE = 0, 592 IBMVFC_TGT_ACTION_INIT, 593 IBMVFC_TGT_ACTION_INIT_WAIT, 594 IBMVFC_TGT_ACTION_DEL_RPORT, 595 }; 596 597 struct ibmvfc_target { 598 struct list_head queue; 599 struct ibmvfc_host *vhost; 600 u64 scsi_id; 601 u64 new_scsi_id; 602 struct fc_rport *rport; 603 int target_id; 604 enum ibmvfc_target_action action; 605 int need_login; 606 int add_rport; 607 int init_retries; 608 int logo_rcvd; 609 u32 cancel_key; 610 struct ibmvfc_service_parms service_parms; 611 struct ibmvfc_service_parms service_parms_change; 612 struct fc_rport_identifiers ids; 613 void (*job_step) (struct ibmvfc_target *); 614 struct timer_list timer; 615 struct kref kref; 616 }; 617 618 /* a unit of work for the hosting partition */ 619 struct ibmvfc_event { 620 struct list_head queue; 621 struct ibmvfc_host *vhost; 622 struct ibmvfc_target *tgt; 623 struct scsi_cmnd *cmnd; 624 atomic_t free; 625 union ibmvfc_iu *xfer_iu; 626 void (*done) (struct ibmvfc_event *); 627 struct ibmvfc_crq crq; 628 union ibmvfc_iu iu; 629 union ibmvfc_iu *sync_iu; 630 struct srp_direct_buf *ext_list; 631 dma_addr_t ext_list_token; 632 struct completion comp; 633 struct completion *eh_comp; 634 struct timer_list timer; 635 }; 636 637 /* a pool of event structs for use */ 638 struct ibmvfc_event_pool { 639 struct ibmvfc_event *events; 640 u32 size; 641 union ibmvfc_iu *iu_storage; 642 dma_addr_t iu_token; 643 }; 644 645 enum ibmvfc_host_action { 646 IBMVFC_HOST_ACTION_NONE = 0, 647 IBMVFC_HOST_ACTION_LOGO, 648 IBMVFC_HOST_ACTION_LOGO_WAIT, 649 IBMVFC_HOST_ACTION_INIT, 650 IBMVFC_HOST_ACTION_INIT_WAIT, 651 IBMVFC_HOST_ACTION_QUERY, 652 IBMVFC_HOST_ACTION_QUERY_TGTS, 653 IBMVFC_HOST_ACTION_TGT_DEL, 654 IBMVFC_HOST_ACTION_ALLOC_TGTS, 655 IBMVFC_HOST_ACTION_TGT_INIT, 656 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 657 }; 658 659 enum ibmvfc_host_state { 660 IBMVFC_NO_CRQ = 0, 661 IBMVFC_INITIALIZING, 662 IBMVFC_ACTIVE, 663 IBMVFC_HALTED, 664 IBMVFC_LINK_DOWN, 665 IBMVFC_LINK_DEAD, 666 IBMVFC_HOST_OFFLINE, 667 }; 668 669 struct ibmvfc_host { 670 char name[8]; 671 struct list_head queue; 672 struct Scsi_Host *host; 673 enum ibmvfc_host_state state; 674 enum ibmvfc_host_action action; 675 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 676 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 677 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 678 struct ibmvfc_trace_entry *trace; 679 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 680 int num_targets; 681 struct list_head targets; 682 struct list_head sent; 683 struct list_head free; 684 struct device *dev; 685 struct ibmvfc_event_pool pool; 686 struct dma_pool *sg_pool; 687 mempool_t *tgt_pool; 688 struct ibmvfc_crq_queue crq; 689 struct ibmvfc_async_crq_queue async_crq; 690 struct ibmvfc_npiv_login login_info; 691 union ibmvfc_npiv_login_data *login_buf; 692 dma_addr_t login_buf_dma; 693 int disc_buf_sz; 694 int log_level; 695 struct ibmvfc_discover_targets_buf *disc_buf; 696 int task_set; 697 int init_retries; 698 int discovery_threads; 699 int abort_threads; 700 int client_migrated; 701 int reinit; 702 int delay_init; 703 int scan_complete; 704 int logged_in; 705 int events_to_log; 706 #define IBMVFC_AE_LINKUP 0x0001 707 #define IBMVFC_AE_LINKDOWN 0x0002 708 #define IBMVFC_AE_RSCN 0x0004 709 dma_addr_t disc_buf_dma; 710 unsigned int partition_number; 711 char partition_name[97]; 712 void (*job_step) (struct ibmvfc_host *); 713 struct task_struct *work_thread; 714 struct tasklet_struct tasklet; 715 struct work_struct rport_add_work_q; 716 wait_queue_head_t init_wait_q; 717 wait_queue_head_t work_wait_q; 718 }; 719 720 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 721 722 #define tgt_dbg(t, fmt, ...) \ 723 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 724 725 #define tgt_info(t, fmt, ...) \ 726 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 727 728 #define tgt_err(t, fmt, ...) \ 729 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 730 731 #define tgt_log(t, level, fmt, ...) \ 732 do { \ 733 if ((t)->vhost->log_level >= level) \ 734 tgt_err(t, fmt, ##__VA_ARGS__); \ 735 } while (0) 736 737 #define ibmvfc_dbg(vhost, ...) \ 738 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 739 740 #define ibmvfc_log(vhost, level, ...) \ 741 do { \ 742 if ((vhost)->log_level >= level) \ 743 dev_err((vhost)->dev, ##__VA_ARGS__); \ 744 } while (0) 745 746 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 747 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 748 749 #ifdef CONFIG_SCSI_IBMVFC_TRACE 750 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 751 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 752 #else 753 #define ibmvfc_create_trace_file(kobj, attr) 0 754 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 755 #endif 756 757 #endif 758