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