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