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           "1.0.2"
  33 #define IBMVFC_DRIVER_DATE              "(August 14, 2008)"
  34
  35 #define IBMVFC_DEFAULT_TIMEOUT  15
  36 #define IBMVFC_INIT_TIMEOUT             30
  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_INIT_RETRIES 3
  47 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  48 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  49 #define IBMVFC_MAX_CDB_LEN              16
  50
  51 /*
  52  * Ensure we have resources for ERP and initialization:
  53  * 1 for ERP
  54  * 1 for initialization
  55  * 1 for each discovery thread
  56  */
  57 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads)
  58
  59 #define IBMVFC_MAD_SUCCESS              0x00
  60 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  61 #define IBMVFC_MAD_FAILED               0xF7
  62 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  63 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  64
  65 enum ibmvfc_crq_valid {
  66         IBMVFC_CRQ_CMD_RSP              = 0x80,
  67         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  68         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  69 };
  70
  71 enum ibmvfc_crq_format {
  72         IBMVFC_CRQ_INIT                 = 0x01,
  73         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  74         IBMVFC_PARTITION_MIGRATED       = 0x06,
  75 };
  76
  77 enum ibmvfc_cmd_status_flags {
  78         IBMVFC_FABRIC_MAPPED            = 0x0001,
  79         IBMVFC_VIOS_FAILURE             = 0x0002,
  80         IBMVFC_FC_FAILURE                       = 0x0004,
  81         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  82         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  83         IBMVFC_VIOS_LOGGED              = 0x0020,
  84 };
  85
  86 enum ibmvfc_fabric_mapped_errors {
  87         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  88         IBMVFC_XPORT_FAULT              = 0x0002,
  89         IBMVFC_CMD_TIMEOUT              = 0x0003,
  90         IBMVFC_ENETDOWN                 = 0x0004,
  91         IBMVFC_HW_FAILURE                       = 0x0005,
  92         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  93         IBMVFC_LINK_DEAD_ERR            = 0x0007,
  94         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
  95         IBMVFC_XPORT_BUSY                       = 0x000A,
  96         IBMVFC_XPORT_DEAD                       = 0x000B,
  97         IBMVFC_CONFIG_ERROR             = 0x000C,
  98         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
  99         IBMVFC_LINK_HALTED              = 0x000E,
 100         IBMVFC_XPORT_GENERAL            = 0x8000,
 101 };
 102
 103 enum ibmvfc_vios_errors {
 104         IBMVFC_CRQ_FAILURE                      = 0x0001,
 105         IBMVFC_SW_FAILURE                               = 0x0002,
 106         IBMVFC_INVALID_PARAMETER                = 0x0003,
 107         IBMVFC_MISSING_PARAMETER                = 0x0004,
 108         IBMVFC_HOST_IO_BUS                      = 0x0005,
 109         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 110         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 111         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 112         IBMVFC_COMMAND_FAILED                   = 0x8000,
 113 };
 114
 115 enum ibmvfc_mad_types {
 116         IBMVFC_NPIV_LOGIN               = 0x0001,
 117         IBMVFC_DISC_TARGETS     = 0x0002,
 118         IBMVFC_PORT_LOGIN               = 0x0004,
 119         IBMVFC_PROCESS_LOGIN    = 0x0008,
 120         IBMVFC_QUERY_TARGET     = 0x0010,
 121         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 122         IBMVFC_PASSTHRU         = 0x0200,
 123         IBMVFC_TMF_MAD          = 0x0100,
 124 };
 125
 126 struct ibmvfc_mad_common {
 127         u32 version;
 128         u32 reserved;
 129         u32 opcode;
 130         u16 status;
 131         u16 length;
 132         u64 tag;
 133 }__attribute__((packed, aligned (8)));
 134
 135 struct ibmvfc_npiv_login_mad {
 136         struct ibmvfc_mad_common common;
 137         struct srp_direct_buf buffer;
 138 }__attribute__((packed, aligned (8)));
 139
 140 #define IBMVFC_MAX_NAME 256
 141
 142 struct ibmvfc_npiv_login {
 143         u32 ostype;
 144 #define IBMVFC_OS_LINUX 0x02
 145         u32 pad;
 146         u64 max_dma_len;
 147         u32 max_payload;
 148         u32 max_response;
 149         u32 partition_num;
 150         u32 vfc_frame_version;
 151         u16 fcp_version;
 152         u16 flags;
 153 #define IBMVFC_CLIENT_MIGRATED  0x01
 154 #define IBMVFC_FLUSH_ON_HALT            0x02
 155         u32 max_cmds;
 156         u64 capabilities;
 157 #define IBMVFC_CAN_MIGRATE              0x01
 158         u64 node_name;
 159         struct srp_direct_buf async;
 160         u8 partition_name[IBMVFC_MAX_NAME];
 161         u8 device_name[IBMVFC_MAX_NAME];
 162         u8 drc_name[IBMVFC_MAX_NAME];
 163         u64 reserved2[2];
 164 }__attribute__((packed, aligned (8)));
 165
 166 struct ibmvfc_common_svc_parms {
 167         u16 fcph_version;
 168         u16 b2b_credit;
 169         u16 features;
 170         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 171         u32 ratov;
 172         u32 edtov;
 173 }__attribute__((packed, aligned (4)));
 174
 175 struct ibmvfc_service_parms {
 176         struct ibmvfc_common_svc_parms common;
 177         u8 port_name[8];
 178         u8 node_name[8];
 179         u32 class1_parms[4];
 180         u32 class2_parms[4];
 181         u32 class3_parms[4];
 182         u32 obsolete[4];
 183         u32 vendor_version[4];
 184         u32 services_avail[2];
 185         u32 ext_len;
 186         u32 reserved[30];
 187         u32 clk_sync_qos[2];
 188 }__attribute__((packed, aligned (4)));
 189
 190 struct ibmvfc_npiv_login_resp {
 191         u32 version;
 192         u16 status;
 193         u16 error;
 194         u32 flags;
 195 #define IBMVFC_NATIVE_FC                0x01
 196 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 197         u32 reserved;
 198         u64 capabilites;
 199         u32 max_cmds;
 200         u32 scsi_id_sz;
 201         u64 max_dma_len;
 202         u64 scsi_id;
 203         u64 port_name;
 204         u64 node_name;
 205         u64 link_speed;
 206         u8 partition_name[IBMVFC_MAX_NAME];
 207         u8 device_name[IBMVFC_MAX_NAME];
 208         u8 port_loc_code[IBMVFC_MAX_NAME];
 209         u8 drc_name[IBMVFC_MAX_NAME];
 210         struct ibmvfc_service_parms service_parms;
 211         u64 reserved2;
 212 }__attribute__((packed, aligned (8)));
 213
 214 union ibmvfc_npiv_login_data {
 215         struct ibmvfc_npiv_login login;
 216         struct ibmvfc_npiv_login_resp resp;
 217 }__attribute__((packed, aligned (8)));
 218
 219 struct ibmvfc_discover_targets_buf {
 220         u32 scsi_id[1];
 221 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 222 };
 223
 224 struct ibmvfc_discover_targets {
 225         struct ibmvfc_mad_common common;
 226         struct srp_direct_buf buffer;
 227         u32 flags;
 228         u16 status;
 229         u16 error;
 230         u32 bufflen;
 231         u32 num_avail;
 232         u32 num_written;
 233         u64 reserved[2];
 234 }__attribute__((packed, aligned (8)));
 235
 236 enum ibmvfc_fc_reason {
 237         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 238         IBMVFC_INVALID_VERSION          = 0x02,
 239         IBMVFC_LOGICAL_ERROR            = 0x03,
 240         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 241         IBMVFC_LOGICAL_BUSY             = 0x05,
 242         IBMVFC_PROTOCOL_ERROR           = 0x07,
 243         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 244         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 245         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 246         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 247         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 248 };
 249
 250 enum ibmvfc_fc_type {
 251         IBMVFC_FABRIC_REJECT    = 0x01,
 252         IBMVFC_PORT_REJECT      = 0x02,
 253         IBMVFC_LS_REJECT                = 0x03,
 254         IBMVFC_FABRIC_BUSY      = 0x04,
 255         IBMVFC_PORT_BUSY                = 0x05,
 256         IBMVFC_BASIC_REJECT     = 0x06,
 257 };
 258
 259 enum ibmvfc_gs_explain {
 260         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 261 };
 262
 263 struct ibmvfc_port_login {
 264         struct ibmvfc_mad_common common;
 265         u64 scsi_id;
 266         u16 reserved;
 267         u16 fc_service_class;
 268         u32 blksz;
 269         u32 hdr_per_blk;
 270         u16 status;
 271         u16 error;              /* also fc_reason */
 272         u16 fc_explain;
 273         u16 fc_type;
 274         u32 reserved2;
 275         struct ibmvfc_service_parms service_parms;
 276         struct ibmvfc_service_parms service_parms_change;
 277         u64 reserved3[2];
 278 }__attribute__((packed, aligned (8)));
 279
 280 struct ibmvfc_prli_svc_parms {
 281         u8 type;
 282 #define IBMVFC_SCSI_FCP_TYPE            0x08
 283         u8 type_ext;
 284         u16 flags;
 285 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 286 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 287 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 288         u32 orig_pa;
 289         u32 resp_pa;
 290         u32 service_parms;
 291 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 292 #define IBMVFC_PRLI_RETRY                               0x00000100
 293 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 294 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 295 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 296 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 297 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 298 }__attribute__((packed, aligned (4)));
 299
 300 struct ibmvfc_process_login {
 301         struct ibmvfc_mad_common common;
 302         u64 scsi_id;
 303         struct ibmvfc_prli_svc_parms parms;
 304         u8 reserved[48];
 305         u16 status;
 306         u16 error;                      /* also fc_reason */
 307         u32 reserved2;
 308         u64 reserved3[2];
 309 }__attribute__((packed, aligned (8)));
 310
 311 struct ibmvfc_query_tgt {
 312         struct ibmvfc_mad_common common;
 313         u64 wwpn;
 314         u64 scsi_id;
 315         u16 status;
 316         u16 error;
 317         u16 fc_explain;
 318         u16 fc_type;
 319         u64 reserved[2];
 320 }__attribute__((packed, aligned (8)));
 321
 322 struct ibmvfc_implicit_logout {
 323         struct ibmvfc_mad_common common;
 324         u64 old_scsi_id;
 325         u64 reserved[2];
 326 }__attribute__((packed, aligned (8)));
 327
 328 struct ibmvfc_tmf {
 329         struct ibmvfc_mad_common common;
 330         u64 scsi_id;
 331         struct scsi_lun lun;
 332         u32 flags;
 333 #define IBMVFC_TMF_ABORT_TASK           0x02
 334 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 335 #define IBMVFC_TMF_LUN_RESET            0x10
 336 #define IBMVFC_TMF_TGT_RESET            0x20
 337 #define IBMVFC_TMF_LUA_VALID            0x40
 338         u32 cancel_key;
 339         u32 my_cancel_key;
 340 #define IBMVFC_TMF_CANCEL_KEY           0x80000000
 341         u32 pad;
 342         u64 reserved[2];
 343 }__attribute__((packed, aligned (8)));
 344
 345 enum ibmvfc_fcp_rsp_info_codes {
 346         RSP_NO_FAILURE          = 0x00,
 347         RSP_TMF_REJECTED                = 0x04,
 348         RSP_TMF_FAILED          = 0x05,
 349         RSP_TMF_INVALID_LUN     = 0x09,
 350 };
 351
 352 struct ibmvfc_fcp_rsp_info {
 353         u16 reserved;
 354         u8 rsp_code;
 355         u8 reserved2[4];
 356 }__attribute__((packed, aligned (2)));
 357
 358 enum ibmvfc_fcp_rsp_flags {
 359         FCP_BIDI_RSP                    = 0x80,
 360         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 361         FCP_BIDI_READ_RESID_OVER        = 0x20,
 362         FCP_CONF_REQ                    = 0x10,
 363         FCP_RESID_UNDER                 = 0x08,
 364         FCP_RESID_OVER                  = 0x04,
 365         FCP_SNS_LEN_VALID                       = 0x02,
 366         FCP_RSP_LEN_VALID                       = 0x01,
 367 };
 368
 369 union ibmvfc_fcp_rsp_data {
 370         struct ibmvfc_fcp_rsp_info info;
 371         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 372 }__attribute__((packed, aligned (8)));
 373
 374 struct ibmvfc_fcp_rsp {
 375         u64 reserved;
 376         u16 retry_delay_timer;
 377         u8 flags;
 378         u8 scsi_status;
 379         u32 fcp_resid;
 380         u32 fcp_sense_len;
 381         u32 fcp_rsp_len;
 382         union ibmvfc_fcp_rsp_data data;
 383 }__attribute__((packed, aligned (8)));
 384
 385 enum ibmvfc_cmd_flags {
 386         IBMVFC_SCATTERLIST      = 0x0001,
 387         IBMVFC_NO_MEM_DESC      = 0x0002,
 388         IBMVFC_READ                     = 0x0004,
 389         IBMVFC_WRITE            = 0x0008,
 390         IBMVFC_TMF                      = 0x0080,
 391         IBMVFC_CLASS_3_ERR      = 0x0100,
 392 };
 393
 394 enum ibmvfc_fc_task_attr {
 395         IBMVFC_SIMPLE_TASK      = 0x00,
 396         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 397         IBMVFC_ORDERED_TASK     = 0x02,
 398         IBMVFC_ACA_TASK         = 0x04,
 399 };
 400
 401 enum ibmvfc_fc_tmf_flags {
 402         IBMVFC_ABORT_TASK_SET   = 0x02,
 403         IBMVFC_LUN_RESET                = 0x10,
 404         IBMVFC_TARGET_RESET     = 0x20,
 405 };
 406
 407 struct ibmvfc_fcp_cmd_iu {
 408         struct scsi_lun lun;
 409         u8 crn;
 410         u8 pri_task_attr;
 411         u8 tmf_flags;
 412         u8 add_cdb_len;
 413 #define IBMVFC_RDDATA           0x02
 414 #define IBMVFC_WRDATA           0x01
 415         u8 cdb[IBMVFC_MAX_CDB_LEN];
 416         u32 xfer_len;
 417 }__attribute__((packed, aligned (4)));
 418
 419 struct ibmvfc_cmd {
 420         u64 task_tag;
 421         u32 frame_type;
 422         u32 payload_len;
 423         u32 resp_len;
 424         u32 adapter_resid;
 425         u16 status;
 426         u16 error;
 427         u16 flags;
 428         u16 response_flags;
 429 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 430         u32 cancel_key;
 431         u32 exchange_id;
 432         struct srp_direct_buf ext_func;
 433         struct srp_direct_buf ioba;
 434         struct srp_direct_buf resp;
 435         u64 correlation;
 436         u64 tgt_scsi_id;
 437         u64 tag;
 438         u64 reserved3[2];
 439         struct ibmvfc_fcp_cmd_iu iu;
 440         struct ibmvfc_fcp_rsp rsp;
 441 }__attribute__((packed, aligned (8)));
 442
 443 struct ibmvfc_passthru_fc_iu {
 444         u32 payload[7];
 445 #define IBMVFC_ADISC    0x52000000
 446         u32 response[7];
 447 };
 448
 449 struct ibmvfc_passthru_iu {
 450         u64 task_tag;
 451         u32 cmd_len;
 452         u32 rsp_len;
 453         u16 status;
 454         u16 error;
 455         u32 flags;
 456 #define IBMVFC_FC_ELS           0x01
 457         u32 cancel_key;
 458         u32 reserved;
 459         struct srp_direct_buf cmd;
 460         struct srp_direct_buf rsp;
 461         u64 correlation;
 462         u64 scsi_id;
 463         u64 tag;
 464         u64 reserved2[2];
 465 }__attribute__((packed, aligned (8)));
 466
 467 struct ibmvfc_passthru_mad {
 468         struct ibmvfc_mad_common common;
 469         struct srp_direct_buf cmd_ioba;
 470         struct ibmvfc_passthru_iu iu;
 471         struct ibmvfc_passthru_fc_iu fc_iu;
 472 }__attribute__((packed, aligned (8)));
 473
 474 struct ibmvfc_trace_start_entry {
 475         u32 xfer_len;
 476 }__attribute__((packed));
 477
 478 struct ibmvfc_trace_end_entry {
 479         u16 status;
 480         u16 error;
 481         u8 fcp_rsp_flags;
 482         u8 rsp_code;
 483         u8 scsi_status;
 484         u8 reserved;
 485 }__attribute__((packed));
 486
 487 struct ibmvfc_trace_entry {
 488         struct ibmvfc_event *evt;
 489         u32 time;
 490         u32 scsi_id;
 491         u32 lun;
 492         u8 fmt;
 493         u8 op_code;
 494         u8 tmf_flags;
 495         u8 type;
 496 #define IBMVFC_TRC_START        0x00
 497 #define IBMVFC_TRC_END          0xff
 498         union {
 499                 struct ibmvfc_trace_start_entry start;
 500                 struct ibmvfc_trace_end_entry end;
 501         } u;
 502 }__attribute__((packed, aligned (8)));
 503
 504 enum ibmvfc_crq_formats {
 505         IBMVFC_CMD_FORMAT               = 0x01,
 506         IBMVFC_ASYNC_EVENT      = 0x02,
 507         IBMVFC_MAD_FORMAT               = 0x04,
 508 };
 509
 510 enum ibmvfc_async_event {
 511         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 512         IBMVFC_AE_ELS_LOGO              = 0x0002,
 513         IBMVFC_AE_ELS_PRLO              = 0x0004,
 514         IBMVFC_AE_SCN_NPORT             = 0x0008,
 515         IBMVFC_AE_SCN_GROUP             = 0x0010,
 516         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 517         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 518         IBMVFC_AE_LINK_UP                       = 0x0080,
 519         IBMVFC_AE_LINK_DOWN             = 0x0100,
 520         IBMVFC_AE_LINK_DEAD             = 0x0200,
 521         IBMVFC_AE_HALT                  = 0x0400,
 522         IBMVFC_AE_RESUME                        = 0x0800,
 523         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 524 };
 525
 526 struct ibmvfc_crq {
 527         u8 valid;
 528         u8 format;
 529         u8 reserved[6];
 530         u64 ioba;
 531 }__attribute__((packed, aligned (8)));
 532
 533 struct ibmvfc_crq_queue {
 534         struct ibmvfc_crq *msgs;
 535         int size, cur;
 536         dma_addr_t msg_token;
 537 };
 538
 539 struct ibmvfc_async_crq {
 540         u8 valid;
 541         u8 pad[3];
 542         u32 pad2;
 543         u64 event;
 544         u64 scsi_id;
 545         u64 wwpn;
 546         u64 node_name;
 547         u64 reserved;
 548 }__attribute__((packed, aligned (8)));
 549
 550 struct ibmvfc_async_crq_queue {
 551         struct ibmvfc_async_crq *msgs;
 552         int size, cur;
 553         dma_addr_t msg_token;
 554 };
 555
 556 union ibmvfc_iu {
 557         struct ibmvfc_mad_common mad_common;
 558         struct ibmvfc_npiv_login_mad npiv_login;
 559         struct ibmvfc_discover_targets discover_targets;
 560         struct ibmvfc_port_login plogi;
 561         struct ibmvfc_process_login prli;
 562         struct ibmvfc_query_tgt query_tgt;
 563         struct ibmvfc_implicit_logout implicit_logout;
 564         struct ibmvfc_tmf tmf;
 565         struct ibmvfc_cmd cmd;
 566         struct ibmvfc_passthru_mad passthru;
 567 }__attribute__((packed, aligned (8)));
 568
 569 enum ibmvfc_target_action {
 570         IBMVFC_TGT_ACTION_NONE = 0,
 571         IBMVFC_TGT_ACTION_INIT,
 572         IBMVFC_TGT_ACTION_INIT_WAIT,
 573         IBMVFC_TGT_ACTION_ADD_RPORT,
 574         IBMVFC_TGT_ACTION_DEL_RPORT,
 575 };
 576
 577 struct ibmvfc_target {
 578         struct list_head queue;
 579         struct ibmvfc_host *vhost;
 580         u64 scsi_id;
 581         u64 new_scsi_id;
 582         struct fc_rport *rport;
 583         int target_id;
 584         enum ibmvfc_target_action action;
 585         int need_login;
 586         int init_retries;
 587         struct ibmvfc_service_parms service_parms;
 588         struct ibmvfc_service_parms service_parms_change;
 589         struct fc_rport_identifiers ids;
 590         void (*job_step) (struct ibmvfc_target *);
 591         struct kref kref;
 592 };
 593
 594 /* a unit of work for the hosting partition */
 595 struct ibmvfc_event {
 596         struct list_head queue;
 597         struct ibmvfc_host *vhost;
 598         struct ibmvfc_target *tgt;
 599         struct scsi_cmnd *cmnd;
 600         atomic_t free;
 601         union ibmvfc_iu *xfer_iu;
 602         void (*done) (struct ibmvfc_event *);
 603         struct ibmvfc_crq crq;
 604         union ibmvfc_iu iu;
 605         union ibmvfc_iu *sync_iu;
 606         struct srp_direct_buf *ext_list;
 607         dma_addr_t ext_list_token;
 608         struct completion comp;
 609         struct timer_list timer;
 610 };
 611
 612 /* a pool of event structs for use */
 613 struct ibmvfc_event_pool {
 614         struct ibmvfc_event *events;
 615         u32 size;
 616         union ibmvfc_iu *iu_storage;
 617         dma_addr_t iu_token;
 618 };
 619
 620 enum ibmvfc_host_action {
 621         IBMVFC_HOST_ACTION_NONE = 0,
 622         IBMVFC_HOST_ACTION_INIT,
 623         IBMVFC_HOST_ACTION_INIT_WAIT,
 624         IBMVFC_HOST_ACTION_QUERY,
 625         IBMVFC_HOST_ACTION_QUERY_TGTS,
 626         IBMVFC_HOST_ACTION_TGT_DEL,
 627         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 628         IBMVFC_HOST_ACTION_TGT_INIT,
 629         IBMVFC_HOST_ACTION_TGT_ADD,
 630 };
 631
 632 enum ibmvfc_host_state {
 633         IBMVFC_NO_CRQ = 0,
 634         IBMVFC_INITIALIZING,
 635         IBMVFC_ACTIVE,
 636         IBMVFC_HALTED,
 637         IBMVFC_LINK_DOWN,
 638         IBMVFC_LINK_DEAD,
 639         IBMVFC_HOST_OFFLINE,
 640 };
 641
 642 struct ibmvfc_host {
 643         char name[8];
 644         struct list_head queue;
 645         struct Scsi_Host *host;
 646         enum ibmvfc_host_state state;
 647         enum ibmvfc_host_action action;
 648 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 649 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 650 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 651         struct ibmvfc_trace_entry *trace;
 652         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 653         int num_targets;
 654         struct list_head targets;
 655         struct list_head sent;
 656         struct list_head free;
 657         struct device *dev;
 658         struct ibmvfc_event_pool pool;
 659         struct dma_pool *sg_pool;
 660         mempool_t *tgt_pool;
 661         struct ibmvfc_crq_queue crq;
 662         struct ibmvfc_async_crq_queue async_crq;
 663         struct ibmvfc_npiv_login login_info;
 664         union ibmvfc_npiv_login_data *login_buf;
 665         dma_addr_t login_buf_dma;
 666         int disc_buf_sz;
 667         int log_level;
 668         struct ibmvfc_discover_targets_buf *disc_buf;
 669         int task_set;
 670         int init_retries;
 671         int discovery_threads;
 672         int client_migrated;
 673         int reinit;
 674         int events_to_log;
 675 #define IBMVFC_AE_LINKUP        0x0001
 676 #define IBMVFC_AE_LINKDOWN      0x0002
 677 #define IBMVFC_AE_RSCN          0x0004
 678         dma_addr_t disc_buf_dma;
 679         unsigned int partition_number;
 680         char partition_name[97];
 681         void (*job_step) (struct ibmvfc_host *);
 682         struct task_struct *work_thread;
 683         wait_queue_head_t init_wait_q;
 684         wait_queue_head_t work_wait_q;
 685 };
 686
 687 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 688
 689 #define tgt_dbg(t, fmt, ...)                    \
 690         DBG_CMD(dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 691
 692 #define tgt_info(t, fmt, ...)           \
 693         dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 694
 695 #define tgt_err(t, fmt, ...)            \
 696         dev_err((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 697
 698 #define ibmvfc_dbg(vhost, ...) \
 699         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 700
 701 #define ibmvfc_log(vhost, level, ...) \
 702         do { \
 703                 if ((vhost)->log_level >= level) \
 704                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 705         } while (0)
 706
 707 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 708 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 709
 710 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 711 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 712 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 713 #else
 714 #define ibmvfc_create_trace_file(kobj, attr) 0
 715 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 716 #endif
 717
 718 #endif