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           "1.0.7"
  33 #define IBMVFC_DRIVER_DATE              "(October 16, 2009)"
  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_MAX_REQUESTS_DEFAULT     100
  42
  43 #define IBMVFC_DEBUG                    0
  44 #define IBMVFC_MAX_TARGETS              1024
  45 #define IBMVFC_MAX_LUN                  0xffffffff
  46 #define IBMVFC_MAX_SECTORS              0xffffu
  47 #define IBMVFC_MAX_DISC_THREADS 4
  48 #define IBMVFC_TGT_MEMPOOL_SZ           64
  49 #define IBMVFC_MAX_CMDS_PER_LUN 64
  50 #define IBMVFC_MAX_HOST_INIT_RETRIES    6
  51 #define IBMVFC_MAX_TGT_INIT_RETRIES             3
  52 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  53 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  54 #define IBMVFC_MAX_CDB_LEN              16
  55
  56 /*
  57  * Ensure we have resources for ERP and initialization:
  58  * 1 for ERP
  59  * 1 for initialization
  60  * 1 for NPIV Logout
  61  * 2 for BSG passthru
  62  * 2 for each discovery thread
  63  */
  64 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
  65
  66 #define IBMVFC_MAD_SUCCESS              0x00
  67 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  68 #define IBMVFC_MAD_FAILED               0xF7
  69 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  70 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  71
  72 enum ibmvfc_crq_valid {
  73         IBMVFC_CRQ_CMD_RSP              = 0x80,
  74         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  75         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  76 };
  77
  78 enum ibmvfc_crq_format {
  79         IBMVFC_CRQ_INIT                 = 0x01,
  80         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  81         IBMVFC_PARTITION_MIGRATED       = 0x06,
  82 };
  83
  84 enum ibmvfc_cmd_status_flags {
  85         IBMVFC_FABRIC_MAPPED            = 0x0001,
  86         IBMVFC_VIOS_FAILURE             = 0x0002,
  87         IBMVFC_FC_FAILURE                       = 0x0004,
  88         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  89         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  90         IBMVFC_VIOS_LOGGED              = 0x0020,
  91 };
  92
  93 enum ibmvfc_fabric_mapped_errors {
  94         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  95         IBMVFC_XPORT_FAULT              = 0x0002,
  96         IBMVFC_CMD_TIMEOUT              = 0x0003,
  97         IBMVFC_ENETDOWN                 = 0x0004,
  98         IBMVFC_HW_FAILURE                       = 0x0005,
  99         IBMVFC_LINK_DOWN_ERR            = 0x0006,
 100         IBMVFC_LINK_DEAD_ERR            = 0x0007,
 101         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
 102         IBMVFC_XPORT_BUSY                       = 0x000A,
 103         IBMVFC_XPORT_DEAD                       = 0x000B,
 104         IBMVFC_CONFIG_ERROR             = 0x000C,
 105         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 106         IBMVFC_LINK_HALTED              = 0x000E,
 107         IBMVFC_XPORT_GENERAL            = 0x8000,
 108 };
 109
 110 enum ibmvfc_vios_errors {
 111         IBMVFC_CRQ_FAILURE                      = 0x0001,
 112         IBMVFC_SW_FAILURE                               = 0x0002,
 113         IBMVFC_INVALID_PARAMETER                = 0x0003,
 114         IBMVFC_MISSING_PARAMETER                = 0x0004,
 115         IBMVFC_HOST_IO_BUS                      = 0x0005,
 116         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 117         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 118         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 119         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 120         IBMVFC_COMMAND_FAILED                   = 0x8000,
 121 };
 122
 123 enum ibmvfc_mad_types {
 124         IBMVFC_NPIV_LOGIN               = 0x0001,
 125         IBMVFC_DISC_TARGETS     = 0x0002,
 126         IBMVFC_PORT_LOGIN               = 0x0004,
 127         IBMVFC_PROCESS_LOGIN    = 0x0008,
 128         IBMVFC_QUERY_TARGET     = 0x0010,
 129         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 130         IBMVFC_PASSTHRU         = 0x0200,
 131         IBMVFC_TMF_MAD          = 0x0100,
 132         IBMVFC_NPIV_LOGOUT      = 0x0800,
 133 };
 134
 135 struct ibmvfc_mad_common {
 136         u32 version;
 137         u32 reserved;
 138         u32 opcode;
 139         u16 status;
 140         u16 length;
 141         u64 tag;
 142 }__attribute__((packed, aligned (8)));
 143
 144 struct ibmvfc_npiv_login_mad {
 145         struct ibmvfc_mad_common common;
 146         struct srp_direct_buf buffer;
 147 }__attribute__((packed, aligned (8)));
 148
 149 struct ibmvfc_npiv_logout_mad {
 150         struct ibmvfc_mad_common common;
 151 }__attribute__((packed, aligned (8)));
 152
 153 #define IBMVFC_MAX_NAME 256
 154
 155 struct ibmvfc_npiv_login {
 156         u32 ostype;
 157 #define IBMVFC_OS_LINUX 0x02
 158         u32 pad;
 159         u64 max_dma_len;
 160         u32 max_payload;
 161         u32 max_response;
 162         u32 partition_num;
 163         u32 vfc_frame_version;
 164         u16 fcp_version;
 165         u16 flags;
 166 #define IBMVFC_CLIENT_MIGRATED  0x01
 167 #define IBMVFC_FLUSH_ON_HALT            0x02
 168         u32 max_cmds;
 169         u64 capabilities;
 170 #define IBMVFC_CAN_MIGRATE              0x01
 171         u64 node_name;
 172         struct srp_direct_buf async;
 173         u8 partition_name[IBMVFC_MAX_NAME];
 174         u8 device_name[IBMVFC_MAX_NAME];
 175         u8 drc_name[IBMVFC_MAX_NAME];
 176         u64 reserved2[2];
 177 }__attribute__((packed, aligned (8)));
 178
 179 struct ibmvfc_common_svc_parms {
 180         u16 fcph_version;
 181         u16 b2b_credit;
 182         u16 features;
 183         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 184         u32 ratov;
 185         u32 edtov;
 186 }__attribute__((packed, aligned (4)));
 187
 188 struct ibmvfc_service_parms {
 189         struct ibmvfc_common_svc_parms common;
 190         u8 port_name[8];
 191         u8 node_name[8];
 192         u32 class1_parms[4];
 193         u32 class2_parms[4];
 194         u32 class3_parms[4];
 195         u32 obsolete[4];
 196         u32 vendor_version[4];
 197         u32 services_avail[2];
 198         u32 ext_len;
 199         u32 reserved[30];
 200         u32 clk_sync_qos[2];
 201 }__attribute__((packed, aligned (4)));
 202
 203 struct ibmvfc_npiv_login_resp {
 204         u32 version;
 205         u16 status;
 206         u16 error;
 207         u32 flags;
 208 #define IBMVFC_NATIVE_FC                0x01
 209 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 210         u32 reserved;
 211         u64 capabilities;
 212 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 213         u32 max_cmds;
 214         u32 scsi_id_sz;
 215         u64 max_dma_len;
 216         u64 scsi_id;
 217         u64 port_name;
 218         u64 node_name;
 219         u64 link_speed;
 220         u8 partition_name[IBMVFC_MAX_NAME];
 221         u8 device_name[IBMVFC_MAX_NAME];
 222         u8 port_loc_code[IBMVFC_MAX_NAME];
 223         u8 drc_name[IBMVFC_MAX_NAME];
 224         struct ibmvfc_service_parms service_parms;
 225         u64 reserved2;
 226 }__attribute__((packed, aligned (8)));
 227
 228 union ibmvfc_npiv_login_data {
 229         struct ibmvfc_npiv_login login;
 230         struct ibmvfc_npiv_login_resp resp;
 231 }__attribute__((packed, aligned (8)));
 232
 233 struct ibmvfc_discover_targets_buf {
 234         u32 scsi_id[1];
 235 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 236 };
 237
 238 struct ibmvfc_discover_targets {
 239         struct ibmvfc_mad_common common;
 240         struct srp_direct_buf buffer;
 241         u32 flags;
 242         u16 status;
 243         u16 error;
 244         u32 bufflen;
 245         u32 num_avail;
 246         u32 num_written;
 247         u64 reserved[2];
 248 }__attribute__((packed, aligned (8)));
 249
 250 enum ibmvfc_fc_reason {
 251         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 252         IBMVFC_INVALID_VERSION          = 0x02,
 253         IBMVFC_LOGICAL_ERROR            = 0x03,
 254         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 255         IBMVFC_LOGICAL_BUSY             = 0x05,
 256         IBMVFC_PROTOCOL_ERROR           = 0x07,
 257         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 258         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 259         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 260         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 261         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 262 };
 263
 264 enum ibmvfc_fc_type {
 265         IBMVFC_FABRIC_REJECT    = 0x01,
 266         IBMVFC_PORT_REJECT      = 0x02,
 267         IBMVFC_LS_REJECT                = 0x03,
 268         IBMVFC_FABRIC_BUSY      = 0x04,
 269         IBMVFC_PORT_BUSY                = 0x05,
 270         IBMVFC_BASIC_REJECT     = 0x06,
 271 };
 272
 273 enum ibmvfc_gs_explain {
 274         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 275 };
 276
 277 struct ibmvfc_port_login {
 278         struct ibmvfc_mad_common common;
 279         u64 scsi_id;
 280         u16 reserved;
 281         u16 fc_service_class;
 282         u32 blksz;
 283         u32 hdr_per_blk;
 284         u16 status;
 285         u16 error;              /* also fc_reason */
 286         u16 fc_explain;
 287         u16 fc_type;
 288         u32 reserved2;
 289         struct ibmvfc_service_parms service_parms;
 290         struct ibmvfc_service_parms service_parms_change;
 291         u64 reserved3[2];
 292 }__attribute__((packed, aligned (8)));
 293
 294 struct ibmvfc_prli_svc_parms {
 295         u8 type;
 296 #define IBMVFC_SCSI_FCP_TYPE            0x08
 297         u8 type_ext;
 298         u16 flags;
 299 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 300 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 301 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 302         u32 orig_pa;
 303         u32 resp_pa;
 304         u32 service_parms;
 305 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 306 #define IBMVFC_PRLI_RETRY                               0x00000100
 307 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 308 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 309 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 310 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 311 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 312 }__attribute__((packed, aligned (4)));
 313
 314 struct ibmvfc_process_login {
 315         struct ibmvfc_mad_common common;
 316         u64 scsi_id;
 317         struct ibmvfc_prli_svc_parms parms;
 318         u8 reserved[48];
 319         u16 status;
 320         u16 error;                      /* also fc_reason */
 321         u32 reserved2;
 322         u64 reserved3[2];
 323 }__attribute__((packed, aligned (8)));
 324
 325 struct ibmvfc_query_tgt {
 326         struct ibmvfc_mad_common common;
 327         u64 wwpn;
 328         u64 scsi_id;
 329         u16 status;
 330         u16 error;
 331         u16 fc_explain;
 332         u16 fc_type;
 333         u64 reserved[2];
 334 }__attribute__((packed, aligned (8)));
 335
 336 struct ibmvfc_implicit_logout {
 337         struct ibmvfc_mad_common common;
 338         u64 old_scsi_id;
 339         u64 reserved[2];
 340 }__attribute__((packed, aligned (8)));
 341
 342 struct ibmvfc_tmf {
 343         struct ibmvfc_mad_common common;
 344         u64 scsi_id;
 345         struct scsi_lun lun;
 346         u32 flags;
 347 #define IBMVFC_TMF_ABORT_TASK           0x02
 348 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 349 #define IBMVFC_TMF_LUN_RESET            0x10
 350 #define IBMVFC_TMF_TGT_RESET            0x20
 351 #define IBMVFC_TMF_LUA_VALID            0x40
 352         u32 cancel_key;
 353         u32 my_cancel_key;
 354         u32 pad;
 355         u64 reserved[2];
 356 }__attribute__((packed, aligned (8)));
 357
 358 enum ibmvfc_fcp_rsp_info_codes {
 359         RSP_NO_FAILURE          = 0x00,
 360         RSP_TMF_REJECTED                = 0x04,
 361         RSP_TMF_FAILED          = 0x05,
 362         RSP_TMF_INVALID_LUN     = 0x09,
 363 };
 364
 365 struct ibmvfc_fcp_rsp_info {
 366         u16 reserved;
 367         u8 rsp_code;
 368         u8 reserved2[4];
 369 }__attribute__((packed, aligned (2)));
 370
 371 enum ibmvfc_fcp_rsp_flags {
 372         FCP_BIDI_RSP                    = 0x80,
 373         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 374         FCP_BIDI_READ_RESID_OVER        = 0x20,
 375         FCP_CONF_REQ                    = 0x10,
 376         FCP_RESID_UNDER                 = 0x08,
 377         FCP_RESID_OVER                  = 0x04,
 378         FCP_SNS_LEN_VALID                       = 0x02,
 379         FCP_RSP_LEN_VALID                       = 0x01,
 380 };
 381
 382 union ibmvfc_fcp_rsp_data {
 383         struct ibmvfc_fcp_rsp_info info;
 384         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 385 }__attribute__((packed, aligned (8)));
 386
 387 struct ibmvfc_fcp_rsp {
 388         u64 reserved;
 389         u16 retry_delay_timer;
 390         u8 flags;
 391         u8 scsi_status;
 392         u32 fcp_resid;
 393         u32 fcp_sense_len;
 394         u32 fcp_rsp_len;
 395         union ibmvfc_fcp_rsp_data data;
 396 }__attribute__((packed, aligned (8)));
 397
 398 enum ibmvfc_cmd_flags {
 399         IBMVFC_SCATTERLIST      = 0x0001,
 400         IBMVFC_NO_MEM_DESC      = 0x0002,
 401         IBMVFC_READ                     = 0x0004,
 402         IBMVFC_WRITE            = 0x0008,
 403         IBMVFC_TMF                      = 0x0080,
 404         IBMVFC_CLASS_3_ERR      = 0x0100,
 405 };
 406
 407 enum ibmvfc_fc_task_attr {
 408         IBMVFC_SIMPLE_TASK      = 0x00,
 409         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 410         IBMVFC_ORDERED_TASK     = 0x02,
 411         IBMVFC_ACA_TASK         = 0x04,
 412 };
 413
 414 enum ibmvfc_fc_tmf_flags {
 415         IBMVFC_ABORT_TASK_SET   = 0x02,
 416         IBMVFC_LUN_RESET                = 0x10,
 417         IBMVFC_TARGET_RESET     = 0x20,
 418 };
 419
 420 struct ibmvfc_fcp_cmd_iu {
 421         struct scsi_lun lun;
 422         u8 crn;
 423         u8 pri_task_attr;
 424         u8 tmf_flags;
 425         u8 add_cdb_len;
 426 #define IBMVFC_RDDATA           0x02
 427 #define IBMVFC_WRDATA           0x01
 428         u8 cdb[IBMVFC_MAX_CDB_LEN];
 429         u32 xfer_len;
 430 }__attribute__((packed, aligned (4)));
 431
 432 struct ibmvfc_cmd {
 433         u64 task_tag;
 434         u32 frame_type;
 435         u32 payload_len;
 436         u32 resp_len;
 437         u32 adapter_resid;
 438         u16 status;
 439         u16 error;
 440         u16 flags;
 441         u16 response_flags;
 442 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 443         u32 cancel_key;
 444         u32 exchange_id;
 445         struct srp_direct_buf ext_func;
 446         struct srp_direct_buf ioba;
 447         struct srp_direct_buf resp;
 448         u64 correlation;
 449         u64 tgt_scsi_id;
 450         u64 tag;
 451         u64 reserved3[2];
 452         struct ibmvfc_fcp_cmd_iu iu;
 453         struct ibmvfc_fcp_rsp rsp;
 454 }__attribute__((packed, aligned (8)));
 455
 456 struct ibmvfc_passthru_fc_iu {
 457         u32 payload[7];
 458 #define IBMVFC_ADISC    0x52000000
 459         u32 response[7];
 460 };
 461
 462 struct ibmvfc_passthru_iu {
 463         u64 task_tag;
 464         u32 cmd_len;
 465         u32 rsp_len;
 466         u16 status;
 467         u16 error;
 468         u32 flags;
 469 #define IBMVFC_FC_ELS           0x01
 470 #define IBMVFC_FC_CT_IU         0x02
 471         u32 cancel_key;
 472 #define IBMVFC_PASSTHRU_CANCEL_KEY      0x80000000
 473 #define IBMVFC_INTERNAL_CANCEL_KEY      0x80000001
 474         u32 reserved;
 475         struct srp_direct_buf cmd;
 476         struct srp_direct_buf rsp;
 477         u64 correlation;
 478         u64 scsi_id;
 479         u64 tag;
 480         u64 reserved2[2];
 481 }__attribute__((packed, aligned (8)));
 482
 483 struct ibmvfc_passthru_mad {
 484         struct ibmvfc_mad_common common;
 485         struct srp_direct_buf cmd_ioba;
 486         struct ibmvfc_passthru_iu iu;
 487         struct ibmvfc_passthru_fc_iu fc_iu;
 488 }__attribute__((packed, aligned (8)));
 489
 490 struct ibmvfc_trace_start_entry {
 491         u32 xfer_len;
 492 }__attribute__((packed));
 493
 494 struct ibmvfc_trace_end_entry {
 495         u16 status;
 496         u16 error;
 497         u8 fcp_rsp_flags;
 498         u8 rsp_code;
 499         u8 scsi_status;
 500         u8 reserved;
 501 }__attribute__((packed));
 502
 503 struct ibmvfc_trace_entry {
 504         struct ibmvfc_event *evt;
 505         u32 time;
 506         u32 scsi_id;
 507         u32 lun;
 508         u8 fmt;
 509         u8 op_code;
 510         u8 tmf_flags;
 511         u8 type;
 512 #define IBMVFC_TRC_START        0x00
 513 #define IBMVFC_TRC_END          0xff
 514         union {
 515                 struct ibmvfc_trace_start_entry start;
 516                 struct ibmvfc_trace_end_entry end;
 517         } u;
 518 }__attribute__((packed, aligned (8)));
 519
 520 enum ibmvfc_crq_formats {
 521         IBMVFC_CMD_FORMAT               = 0x01,
 522         IBMVFC_ASYNC_EVENT      = 0x02,
 523         IBMVFC_MAD_FORMAT               = 0x04,
 524 };
 525
 526 enum ibmvfc_async_event {
 527         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 528         IBMVFC_AE_ELS_LOGO              = 0x0002,
 529         IBMVFC_AE_ELS_PRLO              = 0x0004,
 530         IBMVFC_AE_SCN_NPORT             = 0x0008,
 531         IBMVFC_AE_SCN_GROUP             = 0x0010,
 532         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 533         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 534         IBMVFC_AE_LINK_UP                       = 0x0080,
 535         IBMVFC_AE_LINK_DOWN             = 0x0100,
 536         IBMVFC_AE_LINK_DEAD             = 0x0200,
 537         IBMVFC_AE_HALT                  = 0x0400,
 538         IBMVFC_AE_RESUME                        = 0x0800,
 539         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 540 };
 541
 542 struct ibmvfc_crq {
 543         volatile u8 valid;
 544         volatile u8 format;
 545         u8 reserved[6];
 546         volatile u64 ioba;
 547 }__attribute__((packed, aligned (8)));
 548
 549 struct ibmvfc_crq_queue {
 550         struct ibmvfc_crq *msgs;
 551         int size, cur;
 552         dma_addr_t msg_token;
 553 };
 554
 555 enum ibmvfc_ae_link_state {
 556         IBMVFC_AE_LS_LINK_UP            = 0x01,
 557         IBMVFC_AE_LS_LINK_BOUNCED       = 0x02,
 558         IBMVFC_AE_LS_LINK_DOWN          = 0x04,
 559         IBMVFC_AE_LS_LINK_DEAD          = 0x08,
 560 };
 561
 562 struct ibmvfc_async_crq {
 563         volatile u8 valid;
 564         u8 link_state;
 565         u8 pad[2];
 566         u32 pad2;
 567         volatile u64 event;
 568         volatile u64 scsi_id;
 569         volatile u64 wwpn;
 570         volatile u64 node_name;
 571         u64 reserved;
 572 }__attribute__((packed, aligned (8)));
 573
 574 struct ibmvfc_async_crq_queue {
 575         struct ibmvfc_async_crq *msgs;
 576         int size, cur;
 577         dma_addr_t msg_token;
 578 };
 579
 580 union ibmvfc_iu {
 581         struct ibmvfc_mad_common mad_common;
 582         struct ibmvfc_npiv_login_mad npiv_login;
 583         struct ibmvfc_npiv_logout_mad npiv_logout;
 584         struct ibmvfc_discover_targets discover_targets;
 585         struct ibmvfc_port_login plogi;
 586         struct ibmvfc_process_login prli;
 587         struct ibmvfc_query_tgt query_tgt;
 588         struct ibmvfc_implicit_logout implicit_logout;
 589         struct ibmvfc_tmf tmf;
 590         struct ibmvfc_cmd cmd;
 591         struct ibmvfc_passthru_mad passthru;
 592 }__attribute__((packed, aligned (8)));
 593
 594 enum ibmvfc_target_action {
 595         IBMVFC_TGT_ACTION_NONE = 0,
 596         IBMVFC_TGT_ACTION_INIT,
 597         IBMVFC_TGT_ACTION_INIT_WAIT,
 598         IBMVFC_TGT_ACTION_DEL_RPORT,
 599 };
 600
 601 struct ibmvfc_target {
 602         struct list_head queue;
 603         struct ibmvfc_host *vhost;
 604         u64 scsi_id;
 605         u64 new_scsi_id;
 606         struct fc_rport *rport;
 607         int target_id;
 608         enum ibmvfc_target_action action;
 609         int need_login;
 610         int add_rport;
 611         int init_retries;
 612         int logo_rcvd;
 613         u32 cancel_key;
 614         struct ibmvfc_service_parms service_parms;
 615         struct ibmvfc_service_parms service_parms_change;
 616         struct fc_rport_identifiers ids;
 617         void (*job_step) (struct ibmvfc_target *);
 618         struct timer_list timer;
 619         struct kref kref;
 620 };
 621
 622 /* a unit of work for the hosting partition */
 623 struct ibmvfc_event {
 624         struct list_head queue;
 625         struct ibmvfc_host *vhost;
 626         struct ibmvfc_target *tgt;
 627         struct scsi_cmnd *cmnd;
 628         atomic_t free;
 629         union ibmvfc_iu *xfer_iu;
 630         void (*done) (struct ibmvfc_event *);
 631         struct ibmvfc_crq crq;
 632         union ibmvfc_iu iu;
 633         union ibmvfc_iu *sync_iu;
 634         struct srp_direct_buf *ext_list;
 635         dma_addr_t ext_list_token;
 636         struct completion comp;
 637         struct completion *eh_comp;
 638         struct timer_list timer;
 639 };
 640
 641 /* a pool of event structs for use */
 642 struct ibmvfc_event_pool {
 643         struct ibmvfc_event *events;
 644         u32 size;
 645         union ibmvfc_iu *iu_storage;
 646         dma_addr_t iu_token;
 647 };
 648
 649 enum ibmvfc_host_action {
 650         IBMVFC_HOST_ACTION_NONE = 0,
 651         IBMVFC_HOST_ACTION_LOGO,
 652         IBMVFC_HOST_ACTION_LOGO_WAIT,
 653         IBMVFC_HOST_ACTION_INIT,
 654         IBMVFC_HOST_ACTION_INIT_WAIT,
 655         IBMVFC_HOST_ACTION_QUERY,
 656         IBMVFC_HOST_ACTION_QUERY_TGTS,
 657         IBMVFC_HOST_ACTION_TGT_DEL,
 658         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 659         IBMVFC_HOST_ACTION_TGT_INIT,
 660         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 661 };
 662
 663 enum ibmvfc_host_state {
 664         IBMVFC_NO_CRQ = 0,
 665         IBMVFC_INITIALIZING,
 666         IBMVFC_ACTIVE,
 667         IBMVFC_HALTED,
 668         IBMVFC_LINK_DOWN,
 669         IBMVFC_LINK_DEAD,
 670         IBMVFC_HOST_OFFLINE,
 671 };
 672
 673 struct ibmvfc_host {
 674         char name[8];
 675         struct list_head queue;
 676         struct Scsi_Host *host;
 677         enum ibmvfc_host_state state;
 678         enum ibmvfc_host_action action;
 679 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 680 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 681 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 682         struct ibmvfc_trace_entry *trace;
 683         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 684         int num_targets;
 685         struct list_head targets;
 686         struct list_head sent;
 687         struct list_head free;
 688         struct device *dev;
 689         struct ibmvfc_event_pool pool;
 690         struct dma_pool *sg_pool;
 691         mempool_t *tgt_pool;
 692         struct ibmvfc_crq_queue crq;
 693         struct ibmvfc_async_crq_queue async_crq;
 694         struct ibmvfc_npiv_login login_info;
 695         union ibmvfc_npiv_login_data *login_buf;
 696         dma_addr_t login_buf_dma;
 697         int disc_buf_sz;
 698         int log_level;
 699         struct ibmvfc_discover_targets_buf *disc_buf;
 700         struct mutex passthru_mutex;
 701         int task_set;
 702         int init_retries;
 703         int discovery_threads;
 704         int abort_threads;
 705         int client_migrated;
 706         int reinit;
 707         int delay_init;
 708         int scan_complete;
 709         int logged_in;
 710         int aborting_passthru;
 711         int events_to_log;
 712 #define IBMVFC_AE_LINKUP        0x0001
 713 #define IBMVFC_AE_LINKDOWN      0x0002
 714 #define IBMVFC_AE_RSCN          0x0004
 715         dma_addr_t disc_buf_dma;
 716         unsigned int partition_number;
 717         char partition_name[97];
 718         void (*job_step) (struct ibmvfc_host *);
 719         struct task_struct *work_thread;
 720         struct tasklet_struct tasklet;
 721         struct work_struct rport_add_work_q;
 722         wait_queue_head_t init_wait_q;
 723         wait_queue_head_t work_wait_q;
 724 };
 725
 726 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 727
 728 #define tgt_dbg(t, fmt, ...)                    \
 729         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 730
 731 #define tgt_info(t, fmt, ...)           \
 732         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 733
 734 #define tgt_err(t, fmt, ...)            \
 735         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 736
 737 #define tgt_log(t, level, fmt, ...) \
 738         do { \
 739                 if ((t)->vhost->log_level >= level) \
 740                         tgt_err(t, fmt, ##__VA_ARGS__); \
 741         } while (0)
 742
 743 #define ibmvfc_dbg(vhost, ...) \
 744         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 745
 746 #define ibmvfc_log(vhost, level, ...) \
 747         do { \
 748                 if ((vhost)->log_level >= level) \
 749                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 750         } while (0)
 751
 752 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 753 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 754
 755 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 756 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 757 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 758 #else
 759 #define ibmvfc_create_trace_file(kobj, attr) 0
 760 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 761 #endif
 762
 763 #endif