drivers/scsi/ibmvscsi/ibmvfc.h

   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           "1.0.4"
  33 #define IBMVFC_DRIVER_DATE              "(November 14, 2008)"
  34
  35 #define IBMVFC_DEFAULT_TIMEOUT  60
  36 #define IBMVFC_INIT_TIMEOUT             120
  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_HOST_INIT_RETRIES    6
  47 #define IBMVFC_MAX_TGT_INIT_RETRIES             3
  48 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  49 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  50 #define IBMVFC_MAX_CDB_LEN              16
  51
  52 /*
  53  * Ensure we have resources for ERP and initialization:
  54  * 1 for ERP
  55  * 1 for initialization
  56  * 1 for each discovery thread
  57  */
  58 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads)
  59
  60 #define IBMVFC_MAD_SUCCESS              0x00
  61 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  62 #define IBMVFC_MAD_FAILED               0xF7
  63 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  64 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  65
  66 enum ibmvfc_crq_valid {
  67         IBMVFC_CRQ_CMD_RSP              = 0x80,
  68         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  69         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  70 };
  71
  72 enum ibmvfc_crq_format {
  73         IBMVFC_CRQ_INIT                 = 0x01,
  74         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  75         IBMVFC_PARTITION_MIGRATED       = 0x06,
  76 };
  77
  78 enum ibmvfc_cmd_status_flags {
  79         IBMVFC_FABRIC_MAPPED            = 0x0001,
  80         IBMVFC_VIOS_FAILURE             = 0x0002,
  81         IBMVFC_FC_FAILURE                       = 0x0004,
  82         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  83         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  84         IBMVFC_VIOS_LOGGED              = 0x0020,
  85 };
  86
  87 enum ibmvfc_fabric_mapped_errors {
  88         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  89         IBMVFC_XPORT_FAULT              = 0x0002,
  90         IBMVFC_CMD_TIMEOUT              = 0x0003,
  91         IBMVFC_ENETDOWN                 = 0x0004,
  92         IBMVFC_HW_FAILURE                       = 0x0005,
  93         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  94         IBMVFC_LINK_DEAD_ERR            = 0x0007,
  95         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
  96         IBMVFC_XPORT_BUSY                       = 0x000A,
  97         IBMVFC_XPORT_DEAD                       = 0x000B,
  98         IBMVFC_CONFIG_ERROR             = 0x000C,
  99         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 100         IBMVFC_LINK_HALTED              = 0x000E,
 101         IBMVFC_XPORT_GENERAL            = 0x8000,
 102 };
 103
 104 enum ibmvfc_vios_errors {
 105         IBMVFC_CRQ_FAILURE                      = 0x0001,
 106         IBMVFC_SW_FAILURE                               = 0x0002,
 107         IBMVFC_INVALID_PARAMETER                = 0x0003,
 108         IBMVFC_MISSING_PARAMETER                = 0x0004,
 109         IBMVFC_HOST_IO_BUS                      = 0x0005,
 110         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 111         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 112         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 113         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 114         IBMVFC_COMMAND_FAILED                   = 0x8000,
 115 };
 116
 117 enum ibmvfc_mad_types {
 118         IBMVFC_NPIV_LOGIN               = 0x0001,
 119         IBMVFC_DISC_TARGETS     = 0x0002,
 120         IBMVFC_PORT_LOGIN               = 0x0004,
 121         IBMVFC_PROCESS_LOGIN    = 0x0008,
 122         IBMVFC_QUERY_TARGET     = 0x0010,
 123         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 124         IBMVFC_PASSTHRU         = 0x0200,
 125         IBMVFC_TMF_MAD          = 0x0100,
 126 };
 127
 128 struct ibmvfc_mad_common {
 129         u32 version;
 130         u32 reserved;
 131         u32 opcode;
 132         u16 status;
 133         u16 length;
 134         u64 tag;
 135 }__attribute__((packed, aligned (8)));
 136
 137 struct ibmvfc_npiv_login_mad {
 138         struct ibmvfc_mad_common common;
 139         struct srp_direct_buf buffer;
 140 }__attribute__((packed, aligned (8)));
 141
 142 #define IBMVFC_MAX_NAME 256
 143
 144 struct ibmvfc_npiv_login {
 145         u32 ostype;
 146 #define IBMVFC_OS_LINUX 0x02
 147         u32 pad;
 148         u64 max_dma_len;
 149         u32 max_payload;
 150         u32 max_response;
 151         u32 partition_num;
 152         u32 vfc_frame_version;
 153         u16 fcp_version;
 154         u16 flags;
 155 #define IBMVFC_CLIENT_MIGRATED  0x01
 156 #define IBMVFC_FLUSH_ON_HALT            0x02
 157         u32 max_cmds;
 158         u64 capabilities;
 159 #define IBMVFC_CAN_MIGRATE              0x01
 160         u64 node_name;
 161         struct srp_direct_buf async;
 162         u8 partition_name[IBMVFC_MAX_NAME];
 163         u8 device_name[IBMVFC_MAX_NAME];
 164         u8 drc_name[IBMVFC_MAX_NAME];
 165         u64 reserved2[2];
 166 }__attribute__((packed, aligned (8)));
 167
 168 struct ibmvfc_common_svc_parms {
 169         u16 fcph_version;
 170         u16 b2b_credit;
 171         u16 features;
 172         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 173         u32 ratov;
 174         u32 edtov;
 175 }__attribute__((packed, aligned (4)));
 176
 177 struct ibmvfc_service_parms {
 178         struct ibmvfc_common_svc_parms common;
 179         u8 port_name[8];
 180         u8 node_name[8];
 181         u32 class1_parms[4];
 182         u32 class2_parms[4];
 183         u32 class3_parms[4];
 184         u32 obsolete[4];
 185         u32 vendor_version[4];
 186         u32 services_avail[2];
 187         u32 ext_len;
 188         u32 reserved[30];
 189         u32 clk_sync_qos[2];
 190 }__attribute__((packed, aligned (4)));
 191
 192 struct ibmvfc_npiv_login_resp {
 193         u32 version;
 194         u16 status;
 195         u16 error;
 196         u32 flags;
 197 #define IBMVFC_NATIVE_FC                0x01
 198 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 199         u32 reserved;
 200         u64 capabilites;
 201         u32 max_cmds;
 202         u32 scsi_id_sz;
 203         u64 max_dma_len;
 204         u64 scsi_id;
 205         u64 port_name;
 206         u64 node_name;
 207         u64 link_speed;
 208         u8 partition_name[IBMVFC_MAX_NAME];
 209         u8 device_name[IBMVFC_MAX_NAME];
 210         u8 port_loc_code[IBMVFC_MAX_NAME];
 211         u8 drc_name[IBMVFC_MAX_NAME];
 212         struct ibmvfc_service_parms service_parms;
 213         u64 reserved2;
 214 }__attribute__((packed, aligned (8)));
 215
 216 union ibmvfc_npiv_login_data {
 217         struct ibmvfc_npiv_login login;
 218         struct ibmvfc_npiv_login_resp resp;
 219 }__attribute__((packed, aligned (8)));
 220
 221 struct ibmvfc_discover_targets_buf {
 222         u32 scsi_id[1];
 223 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 224 };
 225
 226 struct ibmvfc_discover_targets {
 227         struct ibmvfc_mad_common common;
 228         struct srp_direct_buf buffer;
 229         u32 flags;
 230         u16 status;
 231         u16 error;
 232         u32 bufflen;
 233         u32 num_avail;
 234         u32 num_written;
 235         u64 reserved[2];
 236 }__attribute__((packed, aligned (8)));
 237
 238 enum ibmvfc_fc_reason {
 239         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 240         IBMVFC_INVALID_VERSION          = 0x02,
 241         IBMVFC_LOGICAL_ERROR            = 0x03,
 242         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 243         IBMVFC_LOGICAL_BUSY             = 0x05,
 244         IBMVFC_PROTOCOL_ERROR           = 0x07,
 245         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 246         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 247         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 248         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 249         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 250 };
 251
 252 enum ibmvfc_fc_type {
 253         IBMVFC_FABRIC_REJECT    = 0x01,
 254         IBMVFC_PORT_REJECT      = 0x02,
 255         IBMVFC_LS_REJECT                = 0x03,
 256         IBMVFC_FABRIC_BUSY      = 0x04,
 257         IBMVFC_PORT_BUSY                = 0x05,
 258         IBMVFC_BASIC_REJECT     = 0x06,
 259 };
 260
 261 enum ibmvfc_gs_explain {
 262         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 263 };
 264
 265 struct ibmvfc_port_login {
 266         struct ibmvfc_mad_common common;
 267         u64 scsi_id;
 268         u16 reserved;
 269         u16 fc_service_class;
 270         u32 blksz;
 271         u32 hdr_per_blk;
 272         u16 status;
 273         u16 error;              /* also fc_reason */
 274         u16 fc_explain;
 275         u16 fc_type;
 276         u32 reserved2;
 277         struct ibmvfc_service_parms service_parms;
 278         struct ibmvfc_service_parms service_parms_change;
 279         u64 reserved3[2];
 280 }__attribute__((packed, aligned (8)));
 281
 282 struct ibmvfc_prli_svc_parms {
 283         u8 type;
 284 #define IBMVFC_SCSI_FCP_TYPE            0x08
 285         u8 type_ext;
 286         u16 flags;
 287 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 288 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 289 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 290         u32 orig_pa;
 291         u32 resp_pa;
 292         u32 service_parms;
 293 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 294 #define IBMVFC_PRLI_RETRY                               0x00000100
 295 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 296 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 297 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 298 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 299 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 300 }__attribute__((packed, aligned (4)));
 301
 302 struct ibmvfc_process_login {
 303         struct ibmvfc_mad_common common;
 304         u64 scsi_id;
 305         struct ibmvfc_prli_svc_parms parms;
 306         u8 reserved[48];
 307         u16 status;
 308         u16 error;                      /* also fc_reason */
 309         u32 reserved2;
 310         u64 reserved3[2];
 311 }__attribute__((packed, aligned (8)));
 312
 313 struct ibmvfc_query_tgt {
 314         struct ibmvfc_mad_common common;
 315         u64 wwpn;
 316         u64 scsi_id;
 317         u16 status;
 318         u16 error;
 319         u16 fc_explain;
 320         u16 fc_type;
 321         u64 reserved[2];
 322 }__attribute__((packed, aligned (8)));
 323
 324 struct ibmvfc_implicit_logout {
 325         struct ibmvfc_mad_common common;
 326         u64 old_scsi_id;
 327         u64 reserved[2];
 328 }__attribute__((packed, aligned (8)));
 329
 330 struct ibmvfc_tmf {
 331         struct ibmvfc_mad_common common;
 332         u64 scsi_id;
 333         struct scsi_lun lun;
 334         u32 flags;
 335 #define IBMVFC_TMF_ABORT_TASK           0x02
 336 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 337 #define IBMVFC_TMF_LUN_RESET            0x10
 338 #define IBMVFC_TMF_TGT_RESET            0x20
 339 #define IBMVFC_TMF_LUA_VALID            0x40
 340         u32 cancel_key;
 341         u32 my_cancel_key;
 342         u32 pad;
 343         u64 reserved[2];
 344 }__attribute__((packed, aligned (8)));
 345
 346 enum ibmvfc_fcp_rsp_info_codes {
 347         RSP_NO_FAILURE          = 0x00,
 348         RSP_TMF_REJECTED                = 0x04,
 349         RSP_TMF_FAILED          = 0x05,
 350         RSP_TMF_INVALID_LUN     = 0x09,
 351 };
 352
 353 struct ibmvfc_fcp_rsp_info {
 354         u16 reserved;
 355         u8 rsp_code;
 356         u8 reserved2[4];
 357 }__attribute__((packed, aligned (2)));
 358
 359 enum ibmvfc_fcp_rsp_flags {
 360         FCP_BIDI_RSP                    = 0x80,
 361         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 362         FCP_BIDI_READ_RESID_OVER        = 0x20,
 363         FCP_CONF_REQ                    = 0x10,
 364         FCP_RESID_UNDER                 = 0x08,
 365         FCP_RESID_OVER                  = 0x04,
 366         FCP_SNS_LEN_VALID                       = 0x02,
 367         FCP_RSP_LEN_VALID                       = 0x01,
 368 };
 369
 370 union ibmvfc_fcp_rsp_data {
 371         struct ibmvfc_fcp_rsp_info info;
 372         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 373 }__attribute__((packed, aligned (8)));
 374
 375 struct ibmvfc_fcp_rsp {
 376         u64 reserved;
 377         u16 retry_delay_timer;
 378         u8 flags;
 379         u8 scsi_status;
 380         u32 fcp_resid;
 381         u32 fcp_sense_len;
 382         u32 fcp_rsp_len;
 383         union ibmvfc_fcp_rsp_data data;
 384 }__attribute__((packed, aligned (8)));
 385
 386 enum ibmvfc_cmd_flags {
 387         IBMVFC_SCATTERLIST      = 0x0001,
 388         IBMVFC_NO_MEM_DESC      = 0x0002,
 389         IBMVFC_READ                     = 0x0004,
 390         IBMVFC_WRITE            = 0x0008,
 391         IBMVFC_TMF                      = 0x0080,
 392         IBMVFC_CLASS_3_ERR      = 0x0100,
 393 };
 394
 395 enum ibmvfc_fc_task_attr {
 396         IBMVFC_SIMPLE_TASK      = 0x00,
 397         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 398         IBMVFC_ORDERED_TASK     = 0x02,
 399         IBMVFC_ACA_TASK         = 0x04,
 400 };
 401
 402 enum ibmvfc_fc_tmf_flags {
 403         IBMVFC_ABORT_TASK_SET   = 0x02,
 404         IBMVFC_LUN_RESET                = 0x10,
 405         IBMVFC_TARGET_RESET     = 0x20,
 406 };
 407
 408 struct ibmvfc_fcp_cmd_iu {
 409         struct scsi_lun lun;
 410         u8 crn;
 411         u8 pri_task_attr;
 412         u8 tmf_flags;
 413         u8 add_cdb_len;
 414 #define IBMVFC_RDDATA           0x02
 415 #define IBMVFC_WRDATA           0x01
 416         u8 cdb[IBMVFC_MAX_CDB_LEN];
 417         u32 xfer_len;
 418 }__attribute__((packed, aligned (4)));
 419
 420 struct ibmvfc_cmd {
 421         u64 task_tag;
 422         u32 frame_type;
 423         u32 payload_len;
 424         u32 resp_len;
 425         u32 adapter_resid;
 426         u16 status;
 427         u16 error;
 428         u16 flags;
 429         u16 response_flags;
 430 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 431         u32 cancel_key;
 432         u32 exchange_id;
 433         struct srp_direct_buf ext_func;
 434         struct srp_direct_buf ioba;
 435         struct srp_direct_buf resp;
 436         u64 correlation;
 437         u64 tgt_scsi_id;
 438         u64 tag;
 439         u64 reserved3[2];
 440         struct ibmvfc_fcp_cmd_iu iu;
 441         struct ibmvfc_fcp_rsp rsp;
 442 }__attribute__((packed, aligned (8)));
 443
 444 struct ibmvfc_passthru_fc_iu {
 445         u32 payload[7];
 446 #define IBMVFC_ADISC    0x52000000
 447         u32 response[7];
 448 };
 449
 450 struct ibmvfc_passthru_iu {
 451         u64 task_tag;
 452         u32 cmd_len;
 453         u32 rsp_len;
 454         u16 status;
 455         u16 error;
 456         u32 flags;
 457 #define IBMVFC_FC_ELS           0x01
 458         u32 cancel_key;
 459         u32 reserved;
 460         struct srp_direct_buf cmd;
 461         struct srp_direct_buf rsp;
 462         u64 correlation;
 463         u64 scsi_id;
 464         u64 tag;
 465         u64 reserved2[2];
 466 }__attribute__((packed, aligned (8)));
 467
 468 struct ibmvfc_passthru_mad {
 469         struct ibmvfc_mad_common common;
 470         struct srp_direct_buf cmd_ioba;
 471         struct ibmvfc_passthru_iu iu;
 472         struct ibmvfc_passthru_fc_iu fc_iu;
 473 }__attribute__((packed, aligned (8)));
 474
 475 struct ibmvfc_trace_start_entry {
 476         u32 xfer_len;
 477 }__attribute__((packed));
 478
 479 struct ibmvfc_trace_end_entry {
 480         u16 status;
 481         u16 error;
 482         u8 fcp_rsp_flags;
 483         u8 rsp_code;
 484         u8 scsi_status;
 485         u8 reserved;
 486 }__attribute__((packed));
 487
 488 struct ibmvfc_trace_entry {
 489         struct ibmvfc_event *evt;
 490         u32 time;
 491         u32 scsi_id;
 492         u32 lun;
 493         u8 fmt;
 494         u8 op_code;
 495         u8 tmf_flags;
 496         u8 type;
 497 #define IBMVFC_TRC_START        0x00
 498 #define IBMVFC_TRC_END          0xff
 499         union {
 500                 struct ibmvfc_trace_start_entry start;
 501                 struct ibmvfc_trace_end_entry end;
 502         } u;
 503 }__attribute__((packed, aligned (8)));
 504
 505 enum ibmvfc_crq_formats {
 506         IBMVFC_CMD_FORMAT               = 0x01,
 507         IBMVFC_ASYNC_EVENT      = 0x02,
 508         IBMVFC_MAD_FORMAT               = 0x04,
 509 };
 510
 511 enum ibmvfc_async_event {
 512         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 513         IBMVFC_AE_ELS_LOGO              = 0x0002,
 514         IBMVFC_AE_ELS_PRLO              = 0x0004,
 515         IBMVFC_AE_SCN_NPORT             = 0x0008,
 516         IBMVFC_AE_SCN_GROUP             = 0x0010,
 517         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 518         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 519         IBMVFC_AE_LINK_UP                       = 0x0080,
 520         IBMVFC_AE_LINK_DOWN             = 0x0100,
 521         IBMVFC_AE_LINK_DEAD             = 0x0200,
 522         IBMVFC_AE_HALT                  = 0x0400,
 523         IBMVFC_AE_RESUME                        = 0x0800,
 524         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 525 };
 526
 527 struct ibmvfc_crq {
 528         volatile u8 valid;
 529         volatile u8 format;
 530         u8 reserved[6];
 531         volatile u64 ioba;
 532 }__attribute__((packed, aligned (8)));
 533
 534 struct ibmvfc_crq_queue {
 535         struct ibmvfc_crq *msgs;
 536         int size, cur;
 537         dma_addr_t msg_token;
 538 };
 539
 540 struct ibmvfc_async_crq {
 541         volatile u8 valid;
 542         u8 pad[3];
 543         u32 pad2;
 544         volatile u64 event;
 545         volatile u64 scsi_id;
 546         volatile u64 wwpn;
 547         volatile u64 node_name;
 548         u64 reserved;
 549 }__attribute__((packed, aligned (8)));
 550
 551 struct ibmvfc_async_crq_queue {
 552         struct ibmvfc_async_crq *msgs;
 553         int size, cur;
 554         dma_addr_t msg_token;
 555 };
 556
 557 union ibmvfc_iu {
 558         struct ibmvfc_mad_common mad_common;
 559         struct ibmvfc_npiv_login_mad npiv_login;
 560         struct ibmvfc_discover_targets discover_targets;
 561         struct ibmvfc_port_login plogi;
 562         struct ibmvfc_process_login prli;
 563         struct ibmvfc_query_tgt query_tgt;
 564         struct ibmvfc_implicit_logout implicit_logout;
 565         struct ibmvfc_tmf tmf;
 566         struct ibmvfc_cmd cmd;
 567         struct ibmvfc_passthru_mad passthru;
 568 }__attribute__((packed, aligned (8)));
 569
 570 enum ibmvfc_target_action {
 571         IBMVFC_TGT_ACTION_NONE = 0,
 572         IBMVFC_TGT_ACTION_INIT,
 573         IBMVFC_TGT_ACTION_INIT_WAIT,
 574         IBMVFC_TGT_ACTION_ADD_RPORT,
 575         IBMVFC_TGT_ACTION_DEL_RPORT,
 576 };
 577
 578 struct ibmvfc_target {
 579         struct list_head queue;
 580         struct ibmvfc_host *vhost;
 581         u64 scsi_id;
 582         u64 new_scsi_id;
 583         struct fc_rport *rport;
 584         int target_id;
 585         enum ibmvfc_target_action action;
 586         int need_login;
 587         int init_retries;
 588         struct ibmvfc_service_parms service_parms;
 589         struct ibmvfc_service_parms service_parms_change;
 590         struct fc_rport_identifiers ids;
 591         void (*job_step) (struct ibmvfc_target *);
 592         struct kref kref;
 593 };
 594
 595 /* a unit of work for the hosting partition */
 596 struct ibmvfc_event {
 597         struct list_head queue;
 598         struct ibmvfc_host *vhost;
 599         struct ibmvfc_target *tgt;
 600         struct scsi_cmnd *cmnd;
 601         atomic_t free;
 602         union ibmvfc_iu *xfer_iu;
 603         void (*done) (struct ibmvfc_event *);
 604         struct ibmvfc_crq crq;
 605         union ibmvfc_iu iu;
 606         union ibmvfc_iu *sync_iu;
 607         struct srp_direct_buf *ext_list;
 608         dma_addr_t ext_list_token;
 609         struct completion comp;
 610         struct completion *eh_comp;
 611         struct timer_list timer;
 612 };
 613
 614 /* a pool of event structs for use */
 615 struct ibmvfc_event_pool {
 616         struct ibmvfc_event *events;
 617         u32 size;
 618         union ibmvfc_iu *iu_storage;
 619         dma_addr_t iu_token;
 620 };
 621
 622 enum ibmvfc_host_action {
 623         IBMVFC_HOST_ACTION_NONE = 0,
 624         IBMVFC_HOST_ACTION_INIT,
 625         IBMVFC_HOST_ACTION_INIT_WAIT,
 626         IBMVFC_HOST_ACTION_QUERY,
 627         IBMVFC_HOST_ACTION_QUERY_TGTS,
 628         IBMVFC_HOST_ACTION_TGT_DEL,
 629         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 630         IBMVFC_HOST_ACTION_TGT_INIT,
 631         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 632         IBMVFC_HOST_ACTION_TGT_ADD,
 633 };
 634
 635 enum ibmvfc_host_state {
 636         IBMVFC_NO_CRQ = 0,
 637         IBMVFC_INITIALIZING,
 638         IBMVFC_ACTIVE,
 639         IBMVFC_HALTED,
 640         IBMVFC_LINK_DOWN,
 641         IBMVFC_LINK_DEAD,
 642         IBMVFC_HOST_OFFLINE,
 643 };
 644
 645 struct ibmvfc_host {
 646         char name[8];
 647         struct list_head queue;
 648         struct Scsi_Host *host;
 649         enum ibmvfc_host_state state;
 650         enum ibmvfc_host_action action;
 651 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 652 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 653 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 654         struct ibmvfc_trace_entry *trace;
 655         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 656         int num_targets;
 657         struct list_head targets;
 658         struct list_head sent;
 659         struct list_head free;
 660         struct device *dev;
 661         struct ibmvfc_event_pool pool;
 662         struct dma_pool *sg_pool;
 663         mempool_t *tgt_pool;
 664         struct ibmvfc_crq_queue crq;
 665         struct ibmvfc_async_crq_queue async_crq;
 666         struct ibmvfc_npiv_login login_info;
 667         union ibmvfc_npiv_login_data *login_buf;
 668         dma_addr_t login_buf_dma;
 669         int disc_buf_sz;
 670         int log_level;
 671         struct ibmvfc_discover_targets_buf *disc_buf;
 672         int task_set;
 673         int init_retries;
 674         int discovery_threads;
 675         int client_migrated;
 676         int reinit;
 677         int delay_init;
 678         int events_to_log;
 679 #define IBMVFC_AE_LINKUP        0x0001
 680 #define IBMVFC_AE_LINKDOWN      0x0002
 681 #define IBMVFC_AE_RSCN          0x0004
 682         dma_addr_t disc_buf_dma;
 683         unsigned int partition_number;
 684         char partition_name[97];
 685         void (*job_step) (struct ibmvfc_host *);
 686         struct task_struct *work_thread;
 687         wait_queue_head_t init_wait_q;
 688         wait_queue_head_t work_wait_q;
 689 };
 690
 691 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 692
 693 #define tgt_dbg(t, fmt, ...)                    \
 694         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 695
 696 #define tgt_info(t, fmt, ...)           \
 697         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 698
 699 #define tgt_err(t, fmt, ...)            \
 700         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 701
 702 #define ibmvfc_dbg(vhost, ...) \
 703         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 704
 705 #define ibmvfc_log(vhost, level, ...) \
 706         do { \
 707                 if ((vhost)->log_level >= level) \
 708                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 709         } while (0)
 710
 711 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 712 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 713
 714 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 715 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 716 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 717 #else
 718 #define ibmvfc_create_trace_file(kobj, attr) 0
 719 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 720 #endif
 721
 722 #endif