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           "1.0.5"
  33 #define IBMVFC_DRIVER_DATE              "(March 19, 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  * 2 for each discovery thread
  61  */
  62 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + (disc_threads * 2))
  63
  64 #define IBMVFC_MAD_SUCCESS              0x00
  65 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  66 #define IBMVFC_MAD_FAILED               0xF7
  67 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  68 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  69
  70 enum ibmvfc_crq_valid {
  71         IBMVFC_CRQ_CMD_RSP              = 0x80,
  72         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  73         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  74 };
  75
  76 enum ibmvfc_crq_format {
  77         IBMVFC_CRQ_INIT                 = 0x01,
  78         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  79         IBMVFC_PARTITION_MIGRATED       = 0x06,
  80 };
  81
  82 enum ibmvfc_cmd_status_flags {
  83         IBMVFC_FABRIC_MAPPED            = 0x0001,
  84         IBMVFC_VIOS_FAILURE             = 0x0002,
  85         IBMVFC_FC_FAILURE                       = 0x0004,
  86         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  87         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  88         IBMVFC_VIOS_LOGGED              = 0x0020,
  89 };
  90
  91 enum ibmvfc_fabric_mapped_errors {
  92         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  93         IBMVFC_XPORT_FAULT              = 0x0002,
  94         IBMVFC_CMD_TIMEOUT              = 0x0003,
  95         IBMVFC_ENETDOWN                 = 0x0004,
  96         IBMVFC_HW_FAILURE                       = 0x0005,
  97         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  98         IBMVFC_LINK_DEAD_ERR            = 0x0007,
  99         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
 100         IBMVFC_XPORT_BUSY                       = 0x000A,
 101         IBMVFC_XPORT_DEAD                       = 0x000B,
 102         IBMVFC_CONFIG_ERROR             = 0x000C,
 103         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 104         IBMVFC_LINK_HALTED              = 0x000E,
 105         IBMVFC_XPORT_GENERAL            = 0x8000,
 106 };
 107
 108 enum ibmvfc_vios_errors {
 109         IBMVFC_CRQ_FAILURE                      = 0x0001,
 110         IBMVFC_SW_FAILURE                               = 0x0002,
 111         IBMVFC_INVALID_PARAMETER                = 0x0003,
 112         IBMVFC_MISSING_PARAMETER                = 0x0004,
 113         IBMVFC_HOST_IO_BUS                      = 0x0005,
 114         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 115         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 116         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 117         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 118         IBMVFC_COMMAND_FAILED                   = 0x8000,
 119 };
 120
 121 enum ibmvfc_mad_types {
 122         IBMVFC_NPIV_LOGIN               = 0x0001,
 123         IBMVFC_DISC_TARGETS     = 0x0002,
 124         IBMVFC_PORT_LOGIN               = 0x0004,
 125         IBMVFC_PROCESS_LOGIN    = 0x0008,
 126         IBMVFC_QUERY_TARGET     = 0x0010,
 127         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 128         IBMVFC_PASSTHRU         = 0x0200,
 129         IBMVFC_TMF_MAD          = 0x0100,
 130 };
 131
 132 struct ibmvfc_mad_common {
 133         u32 version;
 134         u32 reserved;
 135         u32 opcode;
 136         u16 status;
 137         u16 length;
 138         u64 tag;
 139 }__attribute__((packed, aligned (8)));
 140
 141 struct ibmvfc_npiv_login_mad {
 142         struct ibmvfc_mad_common common;
 143         struct srp_direct_buf buffer;
 144 }__attribute__((packed, aligned (8)));
 145
 146 #define IBMVFC_MAX_NAME 256
 147
 148 struct ibmvfc_npiv_login {
 149         u32 ostype;
 150 #define IBMVFC_OS_LINUX 0x02
 151         u32 pad;
 152         u64 max_dma_len;
 153         u32 max_payload;
 154         u32 max_response;
 155         u32 partition_num;
 156         u32 vfc_frame_version;
 157         u16 fcp_version;
 158         u16 flags;
 159 #define IBMVFC_CLIENT_MIGRATED  0x01
 160 #define IBMVFC_FLUSH_ON_HALT            0x02
 161         u32 max_cmds;
 162         u64 capabilities;
 163 #define IBMVFC_CAN_MIGRATE              0x01
 164         u64 node_name;
 165         struct srp_direct_buf async;
 166         u8 partition_name[IBMVFC_MAX_NAME];
 167         u8 device_name[IBMVFC_MAX_NAME];
 168         u8 drc_name[IBMVFC_MAX_NAME];
 169         u64 reserved2[2];
 170 }__attribute__((packed, aligned (8)));
 171
 172 struct ibmvfc_common_svc_parms {
 173         u16 fcph_version;
 174         u16 b2b_credit;
 175         u16 features;
 176         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 177         u32 ratov;
 178         u32 edtov;
 179 }__attribute__((packed, aligned (4)));
 180
 181 struct ibmvfc_service_parms {
 182         struct ibmvfc_common_svc_parms common;
 183         u8 port_name[8];
 184         u8 node_name[8];
 185         u32 class1_parms[4];
 186         u32 class2_parms[4];
 187         u32 class3_parms[4];
 188         u32 obsolete[4];
 189         u32 vendor_version[4];
 190         u32 services_avail[2];
 191         u32 ext_len;
 192         u32 reserved[30];
 193         u32 clk_sync_qos[2];
 194 }__attribute__((packed, aligned (4)));
 195
 196 struct ibmvfc_npiv_login_resp {
 197         u32 version;
 198         u16 status;
 199         u16 error;
 200         u32 flags;
 201 #define IBMVFC_NATIVE_FC                0x01
 202 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 203         u32 reserved;
 204         u64 capabilites;
 205         u32 max_cmds;
 206         u32 scsi_id_sz;
 207         u64 max_dma_len;
 208         u64 scsi_id;
 209         u64 port_name;
 210         u64 node_name;
 211         u64 link_speed;
 212         u8 partition_name[IBMVFC_MAX_NAME];
 213         u8 device_name[IBMVFC_MAX_NAME];
 214         u8 port_loc_code[IBMVFC_MAX_NAME];
 215         u8 drc_name[IBMVFC_MAX_NAME];
 216         struct ibmvfc_service_parms service_parms;
 217         u64 reserved2;
 218 }__attribute__((packed, aligned (8)));
 219
 220 union ibmvfc_npiv_login_data {
 221         struct ibmvfc_npiv_login login;
 222         struct ibmvfc_npiv_login_resp resp;
 223 }__attribute__((packed, aligned (8)));
 224
 225 struct ibmvfc_discover_targets_buf {
 226         u32 scsi_id[1];
 227 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 228 };
 229
 230 struct ibmvfc_discover_targets {
 231         struct ibmvfc_mad_common common;
 232         struct srp_direct_buf buffer;
 233         u32 flags;
 234         u16 status;
 235         u16 error;
 236         u32 bufflen;
 237         u32 num_avail;
 238         u32 num_written;
 239         u64 reserved[2];
 240 }__attribute__((packed, aligned (8)));
 241
 242 enum ibmvfc_fc_reason {
 243         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 244         IBMVFC_INVALID_VERSION          = 0x02,
 245         IBMVFC_LOGICAL_ERROR            = 0x03,
 246         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 247         IBMVFC_LOGICAL_BUSY             = 0x05,
 248         IBMVFC_PROTOCOL_ERROR           = 0x07,
 249         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 250         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 251         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 252         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 253         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 254 };
 255
 256 enum ibmvfc_fc_type {
 257         IBMVFC_FABRIC_REJECT    = 0x01,
 258         IBMVFC_PORT_REJECT      = 0x02,
 259         IBMVFC_LS_REJECT                = 0x03,
 260         IBMVFC_FABRIC_BUSY      = 0x04,
 261         IBMVFC_PORT_BUSY                = 0x05,
 262         IBMVFC_BASIC_REJECT     = 0x06,
 263 };
 264
 265 enum ibmvfc_gs_explain {
 266         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 267 };
 268
 269 struct ibmvfc_port_login {
 270         struct ibmvfc_mad_common common;
 271         u64 scsi_id;
 272         u16 reserved;
 273         u16 fc_service_class;
 274         u32 blksz;
 275         u32 hdr_per_blk;
 276         u16 status;
 277         u16 error;              /* also fc_reason */
 278         u16 fc_explain;
 279         u16 fc_type;
 280         u32 reserved2;
 281         struct ibmvfc_service_parms service_parms;
 282         struct ibmvfc_service_parms service_parms_change;
 283         u64 reserved3[2];
 284 }__attribute__((packed, aligned (8)));
 285
 286 struct ibmvfc_prli_svc_parms {
 287         u8 type;
 288 #define IBMVFC_SCSI_FCP_TYPE            0x08
 289         u8 type_ext;
 290         u16 flags;
 291 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 292 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 293 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 294         u32 orig_pa;
 295         u32 resp_pa;
 296         u32 service_parms;
 297 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 298 #define IBMVFC_PRLI_RETRY                               0x00000100
 299 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 300 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 301 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 302 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 303 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 304 }__attribute__((packed, aligned (4)));
 305
 306 struct ibmvfc_process_login {
 307         struct ibmvfc_mad_common common;
 308         u64 scsi_id;
 309         struct ibmvfc_prli_svc_parms parms;
 310         u8 reserved[48];
 311         u16 status;
 312         u16 error;                      /* also fc_reason */
 313         u32 reserved2;
 314         u64 reserved3[2];
 315 }__attribute__((packed, aligned (8)));
 316
 317 struct ibmvfc_query_tgt {
 318         struct ibmvfc_mad_common common;
 319         u64 wwpn;
 320         u64 scsi_id;
 321         u16 status;
 322         u16 error;
 323         u16 fc_explain;
 324         u16 fc_type;
 325         u64 reserved[2];
 326 }__attribute__((packed, aligned (8)));
 327
 328 struct ibmvfc_implicit_logout {
 329         struct ibmvfc_mad_common common;
 330         u64 old_scsi_id;
 331         u64 reserved[2];
 332 }__attribute__((packed, aligned (8)));
 333
 334 struct ibmvfc_tmf {
 335         struct ibmvfc_mad_common common;
 336         u64 scsi_id;
 337         struct scsi_lun lun;
 338         u32 flags;
 339 #define IBMVFC_TMF_ABORT_TASK           0x02
 340 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 341 #define IBMVFC_TMF_LUN_RESET            0x10
 342 #define IBMVFC_TMF_TGT_RESET            0x20
 343 #define IBMVFC_TMF_LUA_VALID            0x40
 344         u32 cancel_key;
 345         u32 my_cancel_key;
 346         u32 pad;
 347         u64 reserved[2];
 348 }__attribute__((packed, aligned (8)));
 349
 350 enum ibmvfc_fcp_rsp_info_codes {
 351         RSP_NO_FAILURE          = 0x00,
 352         RSP_TMF_REJECTED                = 0x04,
 353         RSP_TMF_FAILED          = 0x05,
 354         RSP_TMF_INVALID_LUN     = 0x09,
 355 };
 356
 357 struct ibmvfc_fcp_rsp_info {
 358         u16 reserved;
 359         u8 rsp_code;
 360         u8 reserved2[4];
 361 }__attribute__((packed, aligned (2)));
 362
 363 enum ibmvfc_fcp_rsp_flags {
 364         FCP_BIDI_RSP                    = 0x80,
 365         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 366         FCP_BIDI_READ_RESID_OVER        = 0x20,
 367         FCP_CONF_REQ                    = 0x10,
 368         FCP_RESID_UNDER                 = 0x08,
 369         FCP_RESID_OVER                  = 0x04,
 370         FCP_SNS_LEN_VALID                       = 0x02,
 371         FCP_RSP_LEN_VALID                       = 0x01,
 372 };
 373
 374 union ibmvfc_fcp_rsp_data {
 375         struct ibmvfc_fcp_rsp_info info;
 376         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 377 }__attribute__((packed, aligned (8)));
 378
 379 struct ibmvfc_fcp_rsp {
 380         u64 reserved;
 381         u16 retry_delay_timer;
 382         u8 flags;
 383         u8 scsi_status;
 384         u32 fcp_resid;
 385         u32 fcp_sense_len;
 386         u32 fcp_rsp_len;
 387         union ibmvfc_fcp_rsp_data data;
 388 }__attribute__((packed, aligned (8)));
 389
 390 enum ibmvfc_cmd_flags {
 391         IBMVFC_SCATTERLIST      = 0x0001,
 392         IBMVFC_NO_MEM_DESC      = 0x0002,
 393         IBMVFC_READ                     = 0x0004,
 394         IBMVFC_WRITE            = 0x0008,
 395         IBMVFC_TMF                      = 0x0080,
 396         IBMVFC_CLASS_3_ERR      = 0x0100,
 397 };
 398
 399 enum ibmvfc_fc_task_attr {
 400         IBMVFC_SIMPLE_TASK      = 0x00,
 401         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 402         IBMVFC_ORDERED_TASK     = 0x02,
 403         IBMVFC_ACA_TASK         = 0x04,
 404 };
 405
 406 enum ibmvfc_fc_tmf_flags {
 407         IBMVFC_ABORT_TASK_SET   = 0x02,
 408         IBMVFC_LUN_RESET                = 0x10,
 409         IBMVFC_TARGET_RESET     = 0x20,
 410 };
 411
 412 struct ibmvfc_fcp_cmd_iu {
 413         struct scsi_lun lun;
 414         u8 crn;
 415         u8 pri_task_attr;
 416         u8 tmf_flags;
 417         u8 add_cdb_len;
 418 #define IBMVFC_RDDATA           0x02
 419 #define IBMVFC_WRDATA           0x01
 420         u8 cdb[IBMVFC_MAX_CDB_LEN];
 421         u32 xfer_len;
 422 }__attribute__((packed, aligned (4)));
 423
 424 struct ibmvfc_cmd {
 425         u64 task_tag;
 426         u32 frame_type;
 427         u32 payload_len;
 428         u32 resp_len;
 429         u32 adapter_resid;
 430         u16 status;
 431         u16 error;
 432         u16 flags;
 433         u16 response_flags;
 434 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 435         u32 cancel_key;
 436         u32 exchange_id;
 437         struct srp_direct_buf ext_func;
 438         struct srp_direct_buf ioba;
 439         struct srp_direct_buf resp;
 440         u64 correlation;
 441         u64 tgt_scsi_id;
 442         u64 tag;
 443         u64 reserved3[2];
 444         struct ibmvfc_fcp_cmd_iu iu;
 445         struct ibmvfc_fcp_rsp rsp;
 446 }__attribute__((packed, aligned (8)));
 447
 448 struct ibmvfc_passthru_fc_iu {
 449         u32 payload[7];
 450 #define IBMVFC_ADISC    0x52000000
 451         u32 response[7];
 452 };
 453
 454 struct ibmvfc_passthru_iu {
 455         u64 task_tag;
 456         u32 cmd_len;
 457         u32 rsp_len;
 458         u16 status;
 459         u16 error;
 460         u32 flags;
 461 #define IBMVFC_FC_ELS           0x01
 462         u32 cancel_key;
 463         u32 reserved;
 464         struct srp_direct_buf cmd;
 465         struct srp_direct_buf rsp;
 466         u64 correlation;
 467         u64 scsi_id;
 468         u64 tag;
 469         u64 reserved2[2];
 470 }__attribute__((packed, aligned (8)));
 471
 472 struct ibmvfc_passthru_mad {
 473         struct ibmvfc_mad_common common;
 474         struct srp_direct_buf cmd_ioba;
 475         struct ibmvfc_passthru_iu iu;
 476         struct ibmvfc_passthru_fc_iu fc_iu;
 477 }__attribute__((packed, aligned (8)));
 478
 479 struct ibmvfc_trace_start_entry {
 480         u32 xfer_len;
 481 }__attribute__((packed));
 482
 483 struct ibmvfc_trace_end_entry {
 484         u16 status;
 485         u16 error;
 486         u8 fcp_rsp_flags;
 487         u8 rsp_code;
 488         u8 scsi_status;
 489         u8 reserved;
 490 }__attribute__((packed));
 491
 492 struct ibmvfc_trace_entry {
 493         struct ibmvfc_event *evt;
 494         u32 time;
 495         u32 scsi_id;
 496         u32 lun;
 497         u8 fmt;
 498         u8 op_code;
 499         u8 tmf_flags;
 500         u8 type;
 501 #define IBMVFC_TRC_START        0x00
 502 #define IBMVFC_TRC_END          0xff
 503         union {
 504                 struct ibmvfc_trace_start_entry start;
 505                 struct ibmvfc_trace_end_entry end;
 506         } u;
 507 }__attribute__((packed, aligned (8)));
 508
 509 enum ibmvfc_crq_formats {
 510         IBMVFC_CMD_FORMAT               = 0x01,
 511         IBMVFC_ASYNC_EVENT      = 0x02,
 512         IBMVFC_MAD_FORMAT               = 0x04,
 513 };
 514
 515 enum ibmvfc_async_event {
 516         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 517         IBMVFC_AE_ELS_LOGO              = 0x0002,
 518         IBMVFC_AE_ELS_PRLO              = 0x0004,
 519         IBMVFC_AE_SCN_NPORT             = 0x0008,
 520         IBMVFC_AE_SCN_GROUP             = 0x0010,
 521         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 522         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 523         IBMVFC_AE_LINK_UP                       = 0x0080,
 524         IBMVFC_AE_LINK_DOWN             = 0x0100,
 525         IBMVFC_AE_LINK_DEAD             = 0x0200,
 526         IBMVFC_AE_HALT                  = 0x0400,
 527         IBMVFC_AE_RESUME                        = 0x0800,
 528         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 529 };
 530
 531 struct ibmvfc_crq {
 532         volatile u8 valid;
 533         volatile u8 format;
 534         u8 reserved[6];
 535         volatile u64 ioba;
 536 }__attribute__((packed, aligned (8)));
 537
 538 struct ibmvfc_crq_queue {
 539         struct ibmvfc_crq *msgs;
 540         int size, cur;
 541         dma_addr_t msg_token;
 542 };
 543
 544 struct ibmvfc_async_crq {
 545         volatile u8 valid;
 546         u8 pad[3];
 547         u32 pad2;
 548         volatile u64 event;
 549         volatile u64 scsi_id;
 550         volatile u64 wwpn;
 551         volatile u64 node_name;
 552         u64 reserved;
 553 }__attribute__((packed, aligned (8)));
 554
 555 struct ibmvfc_async_crq_queue {
 556         struct ibmvfc_async_crq *msgs;
 557         int size, cur;
 558         dma_addr_t msg_token;
 559 };
 560
 561 union ibmvfc_iu {
 562         struct ibmvfc_mad_common mad_common;
 563         struct ibmvfc_npiv_login_mad npiv_login;
 564         struct ibmvfc_discover_targets discover_targets;
 565         struct ibmvfc_port_login plogi;
 566         struct ibmvfc_process_login prli;
 567         struct ibmvfc_query_tgt query_tgt;
 568         struct ibmvfc_implicit_logout implicit_logout;
 569         struct ibmvfc_tmf tmf;
 570         struct ibmvfc_cmd cmd;
 571         struct ibmvfc_passthru_mad passthru;
 572 }__attribute__((packed, aligned (8)));
 573
 574 enum ibmvfc_target_action {
 575         IBMVFC_TGT_ACTION_NONE = 0,
 576         IBMVFC_TGT_ACTION_INIT,
 577         IBMVFC_TGT_ACTION_INIT_WAIT,
 578         IBMVFC_TGT_ACTION_DEL_RPORT,
 579 };
 580
 581 struct ibmvfc_target {
 582         struct list_head queue;
 583         struct ibmvfc_host *vhost;
 584         u64 scsi_id;
 585         u64 new_scsi_id;
 586         struct fc_rport *rport;
 587         int target_id;
 588         enum ibmvfc_target_action action;
 589         int need_login;
 590         int add_rport;
 591         int init_retries;
 592         u32 cancel_key;
 593         struct ibmvfc_service_parms service_parms;
 594         struct ibmvfc_service_parms service_parms_change;
 595         struct fc_rport_identifiers ids;
 596         void (*job_step) (struct ibmvfc_target *);
 597         struct timer_list timer;
 598         struct kref kref;
 599 };
 600
 601 /* a unit of work for the hosting partition */
 602 struct ibmvfc_event {
 603         struct list_head queue;
 604         struct ibmvfc_host *vhost;
 605         struct ibmvfc_target *tgt;
 606         struct scsi_cmnd *cmnd;
 607         atomic_t free;
 608         union ibmvfc_iu *xfer_iu;
 609         void (*done) (struct ibmvfc_event *);
 610         struct ibmvfc_crq crq;
 611         union ibmvfc_iu iu;
 612         union ibmvfc_iu *sync_iu;
 613         struct srp_direct_buf *ext_list;
 614         dma_addr_t ext_list_token;
 615         struct completion comp;
 616         struct completion *eh_comp;
 617         struct timer_list timer;
 618 };
 619
 620 /* a pool of event structs for use */
 621 struct ibmvfc_event_pool {
 622         struct ibmvfc_event *events;
 623         u32 size;
 624         union ibmvfc_iu *iu_storage;
 625         dma_addr_t iu_token;
 626 };
 627
 628 enum ibmvfc_host_action {
 629         IBMVFC_HOST_ACTION_NONE = 0,
 630         IBMVFC_HOST_ACTION_INIT,
 631         IBMVFC_HOST_ACTION_INIT_WAIT,
 632         IBMVFC_HOST_ACTION_QUERY,
 633         IBMVFC_HOST_ACTION_QUERY_TGTS,
 634         IBMVFC_HOST_ACTION_TGT_DEL,
 635         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 636         IBMVFC_HOST_ACTION_TGT_INIT,
 637         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 638 };
 639
 640 enum ibmvfc_host_state {
 641         IBMVFC_NO_CRQ = 0,
 642         IBMVFC_INITIALIZING,
 643         IBMVFC_ACTIVE,
 644         IBMVFC_HALTED,
 645         IBMVFC_LINK_DOWN,
 646         IBMVFC_LINK_DEAD,
 647         IBMVFC_HOST_OFFLINE,
 648 };
 649
 650 struct ibmvfc_host {
 651         char name[8];
 652         struct list_head queue;
 653         struct Scsi_Host *host;
 654         enum ibmvfc_host_state state;
 655         enum ibmvfc_host_action action;
 656 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 657 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 658 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 659         struct ibmvfc_trace_entry *trace;
 660         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 661         int num_targets;
 662         struct list_head targets;
 663         struct list_head sent;
 664         struct list_head free;
 665         struct device *dev;
 666         struct ibmvfc_event_pool pool;
 667         struct dma_pool *sg_pool;
 668         mempool_t *tgt_pool;
 669         struct ibmvfc_crq_queue crq;
 670         struct ibmvfc_async_crq_queue async_crq;
 671         struct ibmvfc_npiv_login login_info;
 672         union ibmvfc_npiv_login_data *login_buf;
 673         dma_addr_t login_buf_dma;
 674         int disc_buf_sz;
 675         int log_level;
 676         struct ibmvfc_discover_targets_buf *disc_buf;
 677         int task_set;
 678         int init_retries;
 679         int discovery_threads;
 680         int abort_threads;
 681         int client_migrated;
 682         int reinit;
 683         int delay_init;
 684         int scan_complete;
 685         int events_to_log;
 686 #define IBMVFC_AE_LINKUP        0x0001
 687 #define IBMVFC_AE_LINKDOWN      0x0002
 688 #define IBMVFC_AE_RSCN          0x0004
 689         dma_addr_t disc_buf_dma;
 690         unsigned int partition_number;
 691         char partition_name[97];
 692         void (*job_step) (struct ibmvfc_host *);
 693         struct task_struct *work_thread;
 694         struct tasklet_struct tasklet;
 695         struct work_struct rport_add_work_q;
 696         wait_queue_head_t init_wait_q;
 697         wait_queue_head_t work_wait_q;
 698 };
 699
 700 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 701
 702 #define tgt_dbg(t, fmt, ...)                    \
 703         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 704
 705 #define tgt_info(t, fmt, ...)           \
 706         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 707
 708 #define tgt_err(t, fmt, ...)            \
 709         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 710
 711 #define tgt_log(t, level, fmt, ...) \
 712         do { \
 713                 if ((t)->vhost->log_level >= level) \
 714                         tgt_err(t, fmt, ##__VA_ARGS__); \
 715         } while (0)
 716
 717 #define ibmvfc_dbg(vhost, ...) \
 718         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 719
 720 #define ibmvfc_log(vhost, level, ...) \
 721         do { \
 722                 if ((vhost)->log_level >= level) \
 723                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 724         } while (0)
 725
 726 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 727 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 728
 729 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 730 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 731 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 732 #else
 733 #define ibmvfc_create_trace_file(kobj, attr) 0
 734 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 735 #endif
 736
 737 #endif