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 <scsi/viosrp.h> 30 31 #define IBMVFC_NAME "ibmvfc" 32 #define IBMVFC_DRIVER_VERSION "1.0.11" 33 #define IBMVFC_DRIVER_DATE "(April 12, 2013)" 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_ABORT_TIMEOUT 8 42 #define IBMVFC_ABORT_WAIT_TIMEOUT 40 43 #define IBMVFC_MAX_REQUESTS_DEFAULT 100 44 45 #define IBMVFC_DEBUG 0 46 #define IBMVFC_MAX_TARGETS 1024 47 #define IBMVFC_MAX_LUN 0xffffffff 48 #define IBMVFC_MAX_SECTORS 0xffffu 49 #define IBMVFC_MAX_DISC_THREADS 4 50 #define IBMVFC_TGT_MEMPOOL_SZ 64 51 #define IBMVFC_MAX_CMDS_PER_LUN 64 52 #define IBMVFC_MAX_HOST_INIT_RETRIES 6 53 #define IBMVFC_MAX_TGT_INIT_RETRIES 3 54 #define IBMVFC_DEV_LOSS_TMO (5 * 60) 55 #define IBMVFC_DEFAULT_LOG_LEVEL 2 56 #define IBMVFC_MAX_CDB_LEN 16 57 #define IBMVFC_CLS3_ERROR 0 58 59 /* 60 * Ensure we have resources for ERP and initialization: 61 * 1 for ERP 62 * 1 for initialization 63 * 1 for NPIV Logout 64 * 2 for BSG passthru 65 * 2 for each discovery thread 66 */ 67 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2)) 68 69 #define IBMVFC_MAD_SUCCESS 0x00 70 #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 71 #define IBMVFC_MAD_FAILED 0xF7 72 #define IBMVFC_MAD_DRIVER_FAILED 0xEE 73 #define IBMVFC_MAD_CRQ_ERROR 0xEF 74 75 enum ibmvfc_crq_valid { 76 IBMVFC_CRQ_CMD_RSP = 0x80, 77 IBMVFC_CRQ_INIT_RSP = 0xC0, 78 IBMVFC_CRQ_XPORT_EVENT = 0xFF, 79 }; 80 81 enum ibmvfc_crq_init_msg { 82 IBMVFC_CRQ_INIT = 0x01, 83 IBMVFC_CRQ_INIT_COMPLETE = 0x02, 84 }; 85 86 enum ibmvfc_crq_xport_evts { 87 IBMVFC_PARTNER_FAILED = 0x01, 88 IBMVFC_PARTNER_DEREGISTER = 0x02, 89 IBMVFC_PARTITION_MIGRATED = 0x06, 90 }; 91 92 enum ibmvfc_cmd_status_flags { 93 IBMVFC_FABRIC_MAPPED = 0x0001, 94 IBMVFC_VIOS_FAILURE = 0x0002, 95 IBMVFC_FC_FAILURE = 0x0004, 96 IBMVFC_FC_SCSI_ERROR = 0x0008, 97 IBMVFC_HW_EVENT_LOGGED = 0x0010, 98 IBMVFC_VIOS_LOGGED = 0x0020, 99 }; 100 101 enum ibmvfc_fabric_mapped_errors { 102 IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, 103 IBMVFC_XPORT_FAULT = 0x0002, 104 IBMVFC_CMD_TIMEOUT = 0x0003, 105 IBMVFC_ENETDOWN = 0x0004, 106 IBMVFC_HW_FAILURE = 0x0005, 107 IBMVFC_LINK_DOWN_ERR = 0x0006, 108 IBMVFC_LINK_DEAD_ERR = 0x0007, 109 IBMVFC_UNABLE_TO_REGISTER = 0x0008, 110 IBMVFC_XPORT_BUSY = 0x000A, 111 IBMVFC_XPORT_DEAD = 0x000B, 112 IBMVFC_CONFIG_ERROR = 0x000C, 113 IBMVFC_NAME_SERVER_FAIL = 0x000D, 114 IBMVFC_LINK_HALTED = 0x000E, 115 IBMVFC_XPORT_GENERAL = 0x8000, 116 }; 117 118 enum ibmvfc_vios_errors { 119 IBMVFC_CRQ_FAILURE = 0x0001, 120 IBMVFC_SW_FAILURE = 0x0002, 121 IBMVFC_INVALID_PARAMETER = 0x0003, 122 IBMVFC_MISSING_PARAMETER = 0x0004, 123 IBMVFC_HOST_IO_BUS = 0x0005, 124 IBMVFC_TRANS_CANCELLED = 0x0006, 125 IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, 126 IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, 127 IBMVFC_PLOGI_REQUIRED = 0x0010, 128 IBMVFC_COMMAND_FAILED = 0x8000, 129 }; 130 131 enum ibmvfc_mad_types { 132 IBMVFC_NPIV_LOGIN = 0x0001, 133 IBMVFC_DISC_TARGETS = 0x0002, 134 IBMVFC_PORT_LOGIN = 0x0004, 135 IBMVFC_PROCESS_LOGIN = 0x0008, 136 IBMVFC_QUERY_TARGET = 0x0010, 137 IBMVFC_IMPLICIT_LOGOUT = 0x0040, 138 IBMVFC_PASSTHRU = 0x0200, 139 IBMVFC_TMF_MAD = 0x0100, 140 IBMVFC_NPIV_LOGOUT = 0x0800, 141 }; 142 143 struct ibmvfc_mad_common { 144 __be32 version; 145 __be32 reserved; 146 __be32 opcode; 147 __be16 status; 148 __be16 length; 149 __be64 tag; 150 }__attribute__((packed, aligned (8))); 151 152 struct ibmvfc_npiv_login_mad { 153 struct ibmvfc_mad_common common; 154 struct srp_direct_buf buffer; 155 }__attribute__((packed, aligned (8))); 156 157 struct ibmvfc_npiv_logout_mad { 158 struct ibmvfc_mad_common common; 159 }__attribute__((packed, aligned (8))); 160 161 #define IBMVFC_MAX_NAME 256 162 163 struct ibmvfc_npiv_login { 164 __be32 ostype; 165 #define IBMVFC_OS_LINUX 0x02 166 __be32 pad; 167 __be64 max_dma_len; 168 __be32 max_payload; 169 __be32 max_response; 170 __be32 partition_num; 171 __be32 vfc_frame_version; 172 __be16 fcp_version; 173 __be16 flags; 174 #define IBMVFC_CLIENT_MIGRATED 0x01 175 #define IBMVFC_FLUSH_ON_HALT 0x02 176 __be32 max_cmds; 177 __be64 capabilities; 178 #define IBMVFC_CAN_MIGRATE 0x01 179 __be64 node_name; 180 struct srp_direct_buf async; 181 u8 partition_name[IBMVFC_MAX_NAME]; 182 u8 device_name[IBMVFC_MAX_NAME]; 183 u8 drc_name[IBMVFC_MAX_NAME]; 184 __be64 reserved2[2]; 185 }__attribute__((packed, aligned (8))); 186 187 struct ibmvfc_common_svc_parms { 188 __be16 fcph_version; 189 __be16 b2b_credit; 190 __be16 features; 191 __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */ 192 __be32 ratov; 193 __be32 edtov; 194 }__attribute__((packed, aligned (4))); 195 196 struct ibmvfc_service_parms { 197 struct ibmvfc_common_svc_parms common; 198 u8 port_name[8]; 199 u8 node_name[8]; 200 __be32 class1_parms[4]; 201 __be32 class2_parms[4]; 202 __be32 class3_parms[4]; 203 __be32 obsolete[4]; 204 __be32 vendor_version[4]; 205 __be32 services_avail[2]; 206 __be32 ext_len; 207 __be32 reserved[30]; 208 __be32 clk_sync_qos[2]; 209 }__attribute__((packed, aligned (4))); 210 211 struct ibmvfc_npiv_login_resp { 212 __be32 version; 213 __be16 status; 214 __be16 error; 215 __be32 flags; 216 #define IBMVFC_NATIVE_FC 0x01 217 __be32 reserved; 218 __be64 capabilities; 219 #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 220 #define IBMVFC_CAN_SUPPRESS_ABTS 0x10 221 __be32 max_cmds; 222 __be32 scsi_id_sz; 223 __be64 max_dma_len; 224 __be64 scsi_id; 225 __be64 port_name; 226 __be64 node_name; 227 __be64 link_speed; 228 u8 partition_name[IBMVFC_MAX_NAME]; 229 u8 device_name[IBMVFC_MAX_NAME]; 230 u8 port_loc_code[IBMVFC_MAX_NAME]; 231 u8 drc_name[IBMVFC_MAX_NAME]; 232 struct ibmvfc_service_parms service_parms; 233 __be64 reserved2; 234 }__attribute__((packed, aligned (8))); 235 236 union ibmvfc_npiv_login_data { 237 struct ibmvfc_npiv_login login; 238 struct ibmvfc_npiv_login_resp resp; 239 }__attribute__((packed, aligned (8))); 240 241 struct ibmvfc_discover_targets_buf { 242 __be32 scsi_id[1]; 243 #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff 244 }; 245 246 struct ibmvfc_discover_targets { 247 struct ibmvfc_mad_common common; 248 struct srp_direct_buf buffer; 249 __be32 flags; 250 __be16 status; 251 __be16 error; 252 __be32 bufflen; 253 __be32 num_avail; 254 __be32 num_written; 255 __be64 reserved[2]; 256 }__attribute__((packed, aligned (8))); 257 258 enum ibmvfc_fc_reason { 259 IBMVFC_INVALID_ELS_CMD_CODE = 0x01, 260 IBMVFC_INVALID_VERSION = 0x02, 261 IBMVFC_LOGICAL_ERROR = 0x03, 262 IBMVFC_INVALID_CT_IU_SIZE = 0x04, 263 IBMVFC_LOGICAL_BUSY = 0x05, 264 IBMVFC_PROTOCOL_ERROR = 0x07, 265 IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, 266 IBMVFC_CMD_NOT_SUPPORTED = 0x0B, 267 IBMVFC_SERVER_NOT_AVAIL = 0x0D, 268 IBMVFC_CMD_IN_PROGRESS = 0x0E, 269 IBMVFC_VENDOR_SPECIFIC = 0xFF, 270 }; 271 272 enum ibmvfc_fc_type { 273 IBMVFC_FABRIC_REJECT = 0x01, 274 IBMVFC_PORT_REJECT = 0x02, 275 IBMVFC_LS_REJECT = 0x03, 276 IBMVFC_FABRIC_BUSY = 0x04, 277 IBMVFC_PORT_BUSY = 0x05, 278 IBMVFC_BASIC_REJECT = 0x06, 279 }; 280 281 enum ibmvfc_gs_explain { 282 IBMVFC_PORT_NAME_NOT_REG = 0x02, 283 }; 284 285 struct ibmvfc_port_login { 286 struct ibmvfc_mad_common common; 287 __be64 scsi_id; 288 __be16 reserved; 289 __be16 fc_service_class; 290 __be32 blksz; 291 __be32 hdr_per_blk; 292 __be16 status; 293 __be16 error; /* also fc_reason */ 294 __be16 fc_explain; 295 __be16 fc_type; 296 __be32 reserved2; 297 struct ibmvfc_service_parms service_parms; 298 struct ibmvfc_service_parms service_parms_change; 299 __be64 reserved3[2]; 300 }__attribute__((packed, aligned (8))); 301 302 struct ibmvfc_prli_svc_parms { 303 u8 type; 304 #define IBMVFC_SCSI_FCP_TYPE 0x08 305 u8 type_ext; 306 __be16 flags; 307 #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 308 #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 309 #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 310 __be32 orig_pa; 311 __be32 resp_pa; 312 __be32 service_parms; 313 #define IBMVFC_PRLI_TASK_RETRY 0x00000200 314 #define IBMVFC_PRLI_RETRY 0x00000100 315 #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 316 #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 317 #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 318 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 319 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 320 }__attribute__((packed, aligned (4))); 321 322 struct ibmvfc_process_login { 323 struct ibmvfc_mad_common common; 324 __be64 scsi_id; 325 struct ibmvfc_prli_svc_parms parms; 326 u8 reserved[48]; 327 __be16 status; 328 __be16 error; /* also fc_reason */ 329 __be32 reserved2; 330 __be64 reserved3[2]; 331 }__attribute__((packed, aligned (8))); 332 333 struct ibmvfc_query_tgt { 334 struct ibmvfc_mad_common common; 335 __be64 wwpn; 336 __be64 scsi_id; 337 __be16 status; 338 __be16 error; 339 __be16 fc_explain; 340 __be16 fc_type; 341 __be64 reserved[2]; 342 }__attribute__((packed, aligned (8))); 343 344 struct ibmvfc_implicit_logout { 345 struct ibmvfc_mad_common common; 346 __be64 old_scsi_id; 347 __be64 reserved[2]; 348 }__attribute__((packed, aligned (8))); 349 350 struct ibmvfc_tmf { 351 struct ibmvfc_mad_common common; 352 __be64 scsi_id; 353 struct scsi_lun lun; 354 __be32 flags; 355 #define IBMVFC_TMF_ABORT_TASK 0x02 356 #define IBMVFC_TMF_ABORT_TASK_SET 0x04 357 #define IBMVFC_TMF_LUN_RESET 0x10 358 #define IBMVFC_TMF_TGT_RESET 0x20 359 #define IBMVFC_TMF_LUA_VALID 0x40 360 #define IBMVFC_TMF_SUPPRESS_ABTS 0x80 361 __be32 cancel_key; 362 __be32 my_cancel_key; 363 __be32 pad; 364 __be64 reserved[2]; 365 }__attribute__((packed, aligned (8))); 366 367 enum ibmvfc_fcp_rsp_info_codes { 368 RSP_NO_FAILURE = 0x00, 369 RSP_TMF_REJECTED = 0x04, 370 RSP_TMF_FAILED = 0x05, 371 RSP_TMF_INVALID_LUN = 0x09, 372 }; 373 374 struct ibmvfc_fcp_rsp_info { 375 u8 reserved[3]; 376 u8 rsp_code; 377 u8 reserved2[4]; 378 }__attribute__((packed, aligned (2))); 379 380 enum ibmvfc_fcp_rsp_flags { 381 FCP_BIDI_RSP = 0x80, 382 FCP_BIDI_READ_RESID_UNDER = 0x40, 383 FCP_BIDI_READ_RESID_OVER = 0x20, 384 FCP_CONF_REQ = 0x10, 385 FCP_RESID_UNDER = 0x08, 386 FCP_RESID_OVER = 0x04, 387 FCP_SNS_LEN_VALID = 0x02, 388 FCP_RSP_LEN_VALID = 0x01, 389 }; 390 391 union ibmvfc_fcp_rsp_data { 392 struct ibmvfc_fcp_rsp_info info; 393 u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; 394 }__attribute__((packed, aligned (8))); 395 396 struct ibmvfc_fcp_rsp { 397 __be64 reserved; 398 __be16 retry_delay_timer; 399 u8 flags; 400 u8 scsi_status; 401 __be32 fcp_resid; 402 __be32 fcp_sense_len; 403 __be32 fcp_rsp_len; 404 union ibmvfc_fcp_rsp_data data; 405 }__attribute__((packed, aligned (8))); 406 407 enum ibmvfc_cmd_flags { 408 IBMVFC_SCATTERLIST = 0x0001, 409 IBMVFC_NO_MEM_DESC = 0x0002, 410 IBMVFC_READ = 0x0004, 411 IBMVFC_WRITE = 0x0008, 412 IBMVFC_TMF = 0x0080, 413 IBMVFC_CLASS_3_ERR = 0x0100, 414 }; 415 416 enum ibmvfc_fc_task_attr { 417 IBMVFC_SIMPLE_TASK = 0x00, 418 IBMVFC_HEAD_OF_QUEUE = 0x01, 419 IBMVFC_ORDERED_TASK = 0x02, 420 IBMVFC_ACA_TASK = 0x04, 421 }; 422 423 enum ibmvfc_fc_tmf_flags { 424 IBMVFC_ABORT_TASK_SET = 0x02, 425 IBMVFC_LUN_RESET = 0x10, 426 IBMVFC_TARGET_RESET = 0x20, 427 }; 428 429 struct ibmvfc_fcp_cmd_iu { 430 struct scsi_lun lun; 431 u8 crn; 432 u8 pri_task_attr; 433 u8 tmf_flags; 434 u8 add_cdb_len; 435 #define IBMVFC_RDDATA 0x02 436 #define IBMVFC_WRDATA 0x01 437 u8 cdb[IBMVFC_MAX_CDB_LEN]; 438 __be32 xfer_len; 439 }__attribute__((packed, aligned (4))); 440 441 struct ibmvfc_cmd { 442 __be64 task_tag; 443 __be32 frame_type; 444 __be32 payload_len; 445 __be32 resp_len; 446 __be32 adapter_resid; 447 __be16 status; 448 __be16 error; 449 __be16 flags; 450 __be16 response_flags; 451 #define IBMVFC_ADAPTER_RESID_VALID 0x01 452 __be32 cancel_key; 453 __be32 exchange_id; 454 struct srp_direct_buf ext_func; 455 struct srp_direct_buf ioba; 456 struct srp_direct_buf resp; 457 __be64 correlation; 458 __be64 tgt_scsi_id; 459 __be64 tag; 460 __be64 reserved3[2]; 461 struct ibmvfc_fcp_cmd_iu iu; 462 struct ibmvfc_fcp_rsp rsp; 463 }__attribute__((packed, aligned (8))); 464 465 struct ibmvfc_passthru_fc_iu { 466 __be32 payload[7]; 467 #define IBMVFC_ADISC 0x52000000 468 __be32 response[7]; 469 }; 470 471 struct ibmvfc_passthru_iu { 472 __be64 task_tag; 473 __be32 cmd_len; 474 __be32 rsp_len; 475 __be16 status; 476 __be16 error; 477 __be32 flags; 478 #define IBMVFC_FC_ELS 0x01 479 #define IBMVFC_FC_CT_IU 0x02 480 __be32 cancel_key; 481 #define IBMVFC_PASSTHRU_CANCEL_KEY 0x80000000 482 #define IBMVFC_INTERNAL_CANCEL_KEY 0x80000001 483 __be32 reserved; 484 struct srp_direct_buf cmd; 485 struct srp_direct_buf rsp; 486 __be64 correlation; 487 __be64 scsi_id; 488 __be64 tag; 489 __be64 reserved2[2]; 490 }__attribute__((packed, aligned (8))); 491 492 struct ibmvfc_passthru_mad { 493 struct ibmvfc_mad_common common; 494 struct srp_direct_buf cmd_ioba; 495 struct ibmvfc_passthru_iu iu; 496 struct ibmvfc_passthru_fc_iu fc_iu; 497 }__attribute__((packed, aligned (8))); 498 499 struct ibmvfc_trace_start_entry { 500 u32 xfer_len; 501 }__attribute__((packed)); 502 503 struct ibmvfc_trace_end_entry { 504 u16 status; 505 u16 error; 506 u8 fcp_rsp_flags; 507 u8 rsp_code; 508 u8 scsi_status; 509 u8 reserved; 510 }__attribute__((packed)); 511 512 struct ibmvfc_trace_entry { 513 struct ibmvfc_event *evt; 514 u32 time; 515 u32 scsi_id; 516 u32 lun; 517 u8 fmt; 518 u8 op_code; 519 u8 tmf_flags; 520 u8 type; 521 #define IBMVFC_TRC_START 0x00 522 #define IBMVFC_TRC_END 0xff 523 union { 524 struct ibmvfc_trace_start_entry start; 525 struct ibmvfc_trace_end_entry end; 526 } u; 527 }__attribute__((packed, aligned (8))); 528 529 enum ibmvfc_crq_formats { 530 IBMVFC_CMD_FORMAT = 0x01, 531 IBMVFC_ASYNC_EVENT = 0x02, 532 IBMVFC_MAD_FORMAT = 0x04, 533 }; 534 535 enum ibmvfc_async_event { 536 IBMVFC_AE_ELS_PLOGI = 0x0001, 537 IBMVFC_AE_ELS_LOGO = 0x0002, 538 IBMVFC_AE_ELS_PRLO = 0x0004, 539 IBMVFC_AE_SCN_NPORT = 0x0008, 540 IBMVFC_AE_SCN_GROUP = 0x0010, 541 IBMVFC_AE_SCN_DOMAIN = 0x0020, 542 IBMVFC_AE_SCN_FABRIC = 0x0040, 543 IBMVFC_AE_LINK_UP = 0x0080, 544 IBMVFC_AE_LINK_DOWN = 0x0100, 545 IBMVFC_AE_LINK_DEAD = 0x0200, 546 IBMVFC_AE_HALT = 0x0400, 547 IBMVFC_AE_RESUME = 0x0800, 548 IBMVFC_AE_ADAPTER_FAILED = 0x1000, 549 }; 550 551 struct ibmvfc_async_desc { 552 const char *desc; 553 enum ibmvfc_async_event ae; 554 int log_level; 555 }; 556 557 struct ibmvfc_crq { 558 volatile u8 valid; 559 volatile u8 format; 560 u8 reserved[6]; 561 volatile __be64 ioba; 562 }__attribute__((packed, aligned (8))); 563 564 struct ibmvfc_crq_queue { 565 struct ibmvfc_crq *msgs; 566 int size, cur; 567 dma_addr_t msg_token; 568 }; 569 570 enum ibmvfc_ae_link_state { 571 IBMVFC_AE_LS_LINK_UP = 0x01, 572 IBMVFC_AE_LS_LINK_BOUNCED = 0x02, 573 IBMVFC_AE_LS_LINK_DOWN = 0x04, 574 IBMVFC_AE_LS_LINK_DEAD = 0x08, 575 }; 576 577 struct ibmvfc_async_crq { 578 volatile u8 valid; 579 u8 link_state; 580 u8 pad[2]; 581 __be32 pad2; 582 volatile __be64 event; 583 volatile __be64 scsi_id; 584 volatile __be64 wwpn; 585 volatile __be64 node_name; 586 __be64 reserved; 587 }__attribute__((packed, aligned (8))); 588 589 struct ibmvfc_async_crq_queue { 590 struct ibmvfc_async_crq *msgs; 591 int size, cur; 592 dma_addr_t msg_token; 593 }; 594 595 union ibmvfc_iu { 596 struct ibmvfc_mad_common mad_common; 597 struct ibmvfc_npiv_login_mad npiv_login; 598 struct ibmvfc_npiv_logout_mad npiv_logout; 599 struct ibmvfc_discover_targets discover_targets; 600 struct ibmvfc_port_login plogi; 601 struct ibmvfc_process_login prli; 602 struct ibmvfc_query_tgt query_tgt; 603 struct ibmvfc_implicit_logout implicit_logout; 604 struct ibmvfc_tmf tmf; 605 struct ibmvfc_cmd cmd; 606 struct ibmvfc_passthru_mad passthru; 607 }__attribute__((packed, aligned (8))); 608 609 enum ibmvfc_target_action { 610 IBMVFC_TGT_ACTION_NONE = 0, 611 IBMVFC_TGT_ACTION_INIT, 612 IBMVFC_TGT_ACTION_INIT_WAIT, 613 IBMVFC_TGT_ACTION_DEL_RPORT, 614 IBMVFC_TGT_ACTION_DELETED_RPORT, 615 }; 616 617 struct ibmvfc_target { 618 struct list_head queue; 619 struct ibmvfc_host *vhost; 620 u64 scsi_id; 621 u64 new_scsi_id; 622 struct fc_rport *rport; 623 int target_id; 624 enum ibmvfc_target_action action; 625 int need_login; 626 int add_rport; 627 int init_retries; 628 int logo_rcvd; 629 u32 cancel_key; 630 struct ibmvfc_service_parms service_parms; 631 struct ibmvfc_service_parms service_parms_change; 632 struct fc_rport_identifiers ids; 633 void (*job_step) (struct ibmvfc_target *); 634 struct timer_list timer; 635 struct kref kref; 636 }; 637 638 /* a unit of work for the hosting partition */ 639 struct ibmvfc_event { 640 struct list_head queue; 641 struct ibmvfc_host *vhost; 642 struct ibmvfc_target *tgt; 643 struct scsi_cmnd *cmnd; 644 atomic_t free; 645 union ibmvfc_iu *xfer_iu; 646 void (*done) (struct ibmvfc_event *); 647 struct ibmvfc_crq crq; 648 union ibmvfc_iu iu; 649 union ibmvfc_iu *sync_iu; 650 struct srp_direct_buf *ext_list; 651 dma_addr_t ext_list_token; 652 struct completion comp; 653 struct completion *eh_comp; 654 struct timer_list timer; 655 }; 656 657 /* a pool of event structs for use */ 658 struct ibmvfc_event_pool { 659 struct ibmvfc_event *events; 660 u32 size; 661 union ibmvfc_iu *iu_storage; 662 dma_addr_t iu_token; 663 }; 664 665 enum ibmvfc_host_action { 666 IBMVFC_HOST_ACTION_NONE = 0, 667 IBMVFC_HOST_ACTION_RESET, 668 IBMVFC_HOST_ACTION_REENABLE, 669 IBMVFC_HOST_ACTION_LOGO, 670 IBMVFC_HOST_ACTION_LOGO_WAIT, 671 IBMVFC_HOST_ACTION_INIT, 672 IBMVFC_HOST_ACTION_INIT_WAIT, 673 IBMVFC_HOST_ACTION_QUERY, 674 IBMVFC_HOST_ACTION_QUERY_TGTS, 675 IBMVFC_HOST_ACTION_TGT_DEL, 676 IBMVFC_HOST_ACTION_ALLOC_TGTS, 677 IBMVFC_HOST_ACTION_TGT_INIT, 678 IBMVFC_HOST_ACTION_TGT_DEL_FAILED, 679 }; 680 681 enum ibmvfc_host_state { 682 IBMVFC_NO_CRQ = 0, 683 IBMVFC_INITIALIZING, 684 IBMVFC_ACTIVE, 685 IBMVFC_HALTED, 686 IBMVFC_LINK_DOWN, 687 IBMVFC_LINK_DEAD, 688 IBMVFC_HOST_OFFLINE, 689 }; 690 691 struct ibmvfc_host { 692 char name[8]; 693 struct list_head queue; 694 struct Scsi_Host *host; 695 enum ibmvfc_host_state state; 696 enum ibmvfc_host_action action; 697 #define IBMVFC_NUM_TRACE_INDEX_BITS 8 698 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) 699 #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) 700 struct ibmvfc_trace_entry *trace; 701 u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; 702 int num_targets; 703 struct list_head targets; 704 struct list_head sent; 705 struct list_head free; 706 struct device *dev; 707 struct ibmvfc_event_pool pool; 708 struct dma_pool *sg_pool; 709 mempool_t *tgt_pool; 710 struct ibmvfc_crq_queue crq; 711 struct ibmvfc_async_crq_queue async_crq; 712 struct ibmvfc_npiv_login login_info; 713 union ibmvfc_npiv_login_data *login_buf; 714 dma_addr_t login_buf_dma; 715 int disc_buf_sz; 716 int log_level; 717 struct ibmvfc_discover_targets_buf *disc_buf; 718 struct mutex passthru_mutex; 719 int task_set; 720 int init_retries; 721 int discovery_threads; 722 int abort_threads; 723 int client_migrated; 724 int reinit; 725 int delay_init; 726 int scan_complete; 727 int logged_in; 728 int aborting_passthru; 729 int events_to_log; 730 #define IBMVFC_AE_LINKUP 0x0001 731 #define IBMVFC_AE_LINKDOWN 0x0002 732 #define IBMVFC_AE_RSCN 0x0004 733 dma_addr_t disc_buf_dma; 734 unsigned int partition_number; 735 char partition_name[97]; 736 void (*job_step) (struct ibmvfc_host *); 737 struct task_struct *work_thread; 738 struct tasklet_struct tasklet; 739 struct work_struct rport_add_work_q; 740 wait_queue_head_t init_wait_q; 741 wait_queue_head_t work_wait_q; 742 }; 743 744 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) 745 746 #define tgt_dbg(t, fmt, ...) \ 747 DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) 748 749 #define tgt_info(t, fmt, ...) \ 750 dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 751 752 #define tgt_err(t, fmt, ...) \ 753 dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__) 754 755 #define tgt_log(t, level, fmt, ...) \ 756 do { \ 757 if ((t)->vhost->log_level >= level) \ 758 tgt_err(t, fmt, ##__VA_ARGS__); \ 759 } while (0) 760 761 #define ibmvfc_dbg(vhost, ...) \ 762 DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) 763 764 #define ibmvfc_log(vhost, level, ...) \ 765 do { \ 766 if ((vhost)->log_level >= level) \ 767 dev_err((vhost)->dev, ##__VA_ARGS__); \ 768 } while (0) 769 770 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) 771 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) 772 773 #ifdef CONFIG_SCSI_IBMVFC_TRACE 774 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) 775 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) 776 #else 777 #define ibmvfc_create_trace_file(kobj, attr) 0 778 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) 779 #endif 780 781 #endif 782