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           "1.0.6"
  33 #define IBMVFC_DRIVER_DATE              "(May 28, 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 each discovery thread
  62  */
  63 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + (disc_threads * 2))
  64
  65 #define IBMVFC_MAD_SUCCESS              0x00
  66 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  67 #define IBMVFC_MAD_FAILED               0xF7
  68 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  69 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  70
  71 enum ibmvfc_crq_valid {
  72         IBMVFC_CRQ_CMD_RSP              = 0x80,
  73         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  74         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  75 };
  76
  77 enum ibmvfc_crq_format {
  78         IBMVFC_CRQ_INIT                 = 0x01,
  79         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  80         IBMVFC_PARTITION_MIGRATED       = 0x06,
  81 };
  82
  83 enum ibmvfc_cmd_status_flags {
  84         IBMVFC_FABRIC_MAPPED            = 0x0001,
  85         IBMVFC_VIOS_FAILURE             = 0x0002,
  86         IBMVFC_FC_FAILURE                       = 0x0004,
  87         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  88         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  89         IBMVFC_VIOS_LOGGED              = 0x0020,
  90 };
  91
  92 enum ibmvfc_fabric_mapped_errors {
  93         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  94         IBMVFC_XPORT_FAULT              = 0x0002,
  95         IBMVFC_CMD_TIMEOUT              = 0x0003,
  96         IBMVFC_ENETDOWN                 = 0x0004,
  97         IBMVFC_HW_FAILURE                       = 0x0005,
  98         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  99         IBMVFC_LINK_DEAD_ERR            = 0x0007,
 100         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
 101         IBMVFC_XPORT_BUSY                       = 0x000A,
 102         IBMVFC_XPORT_DEAD                       = 0x000B,
 103         IBMVFC_CONFIG_ERROR             = 0x000C,
 104         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 105         IBMVFC_LINK_HALTED              = 0x000E,
 106         IBMVFC_XPORT_GENERAL            = 0x8000,
 107 };
 108
 109 enum ibmvfc_vios_errors {
 110         IBMVFC_CRQ_FAILURE                      = 0x0001,
 111         IBMVFC_SW_FAILURE                               = 0x0002,
 112         IBMVFC_INVALID_PARAMETER                = 0x0003,
 113         IBMVFC_MISSING_PARAMETER                = 0x0004,
 114         IBMVFC_HOST_IO_BUS                      = 0x0005,
 115         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 116         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 117         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 118         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 119         IBMVFC_COMMAND_FAILED                   = 0x8000,
 120 };
 121
 122 enum ibmvfc_mad_types {
 123         IBMVFC_NPIV_LOGIN               = 0x0001,
 124         IBMVFC_DISC_TARGETS     = 0x0002,
 125         IBMVFC_PORT_LOGIN               = 0x0004,
 126         IBMVFC_PROCESS_LOGIN    = 0x0008,
 127         IBMVFC_QUERY_TARGET     = 0x0010,
 128         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 129         IBMVFC_PASSTHRU         = 0x0200,
 130         IBMVFC_TMF_MAD          = 0x0100,
 131         IBMVFC_NPIV_LOGOUT      = 0x0800,
 132 };
 133
 134 struct ibmvfc_mad_common {
 135         u32 version;
 136         u32 reserved;
 137         u32 opcode;
 138         u16 status;
 139         u16 length;
 140         u64 tag;
 141 }__attribute__((packed, aligned (8)));
 142
 143 struct ibmvfc_npiv_login_mad {
 144         struct ibmvfc_mad_common common;
 145         struct srp_direct_buf buffer;
 146 }__attribute__((packed, aligned (8)));
 147
 148 struct ibmvfc_npiv_logout_mad {
 149         struct ibmvfc_mad_common common;
 150 }__attribute__((packed, aligned (8)));
 151
 152 #define IBMVFC_MAX_NAME 256
 153
 154 struct ibmvfc_npiv_login {
 155         u32 ostype;
 156 #define IBMVFC_OS_LINUX 0x02
 157         u32 pad;
 158         u64 max_dma_len;
 159         u32 max_payload;
 160         u32 max_response;
 161         u32 partition_num;
 162         u32 vfc_frame_version;
 163         u16 fcp_version;
 164         u16 flags;
 165 #define IBMVFC_CLIENT_MIGRATED  0x01
 166 #define IBMVFC_FLUSH_ON_HALT            0x02
 167         u32 max_cmds;
 168         u64 capabilities;
 169 #define IBMVFC_CAN_MIGRATE              0x01
 170         u64 node_name;
 171         struct srp_direct_buf async;
 172         u8 partition_name[IBMVFC_MAX_NAME];
 173         u8 device_name[IBMVFC_MAX_NAME];
 174         u8 drc_name[IBMVFC_MAX_NAME];
 175         u64 reserved2[2];
 176 }__attribute__((packed, aligned (8)));
 177
 178 struct ibmvfc_common_svc_parms {
 179         u16 fcph_version;
 180         u16 b2b_credit;
 181         u16 features;
 182         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 183         u32 ratov;
 184         u32 edtov;
 185 }__attribute__((packed, aligned (4)));
 186
 187 struct ibmvfc_service_parms {
 188         struct ibmvfc_common_svc_parms common;
 189         u8 port_name[8];
 190         u8 node_name[8];
 191         u32 class1_parms[4];
 192         u32 class2_parms[4];
 193         u32 class3_parms[4];
 194         u32 obsolete[4];
 195         u32 vendor_version[4];
 196         u32 services_avail[2];
 197         u32 ext_len;
 198         u32 reserved[30];
 199         u32 clk_sync_qos[2];
 200 }__attribute__((packed, aligned (4)));
 201
 202 struct ibmvfc_npiv_login_resp {
 203         u32 version;
 204         u16 status;
 205         u16 error;
 206         u32 flags;
 207 #define IBMVFC_NATIVE_FC                0x01
 208 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 209         u32 reserved;
 210         u64 capabilities;
 211 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 212         u32 max_cmds;
 213         u32 scsi_id_sz;
 214         u64 max_dma_len;
 215         u64 scsi_id;
 216         u64 port_name;
 217         u64 node_name;
 218         u64 link_speed;
 219         u8 partition_name[IBMVFC_MAX_NAME];
 220         u8 device_name[IBMVFC_MAX_NAME];
 221         u8 port_loc_code[IBMVFC_MAX_NAME];
 222         u8 drc_name[IBMVFC_MAX_NAME];
 223         struct ibmvfc_service_parms service_parms;
 224         u64 reserved2;
 225 }__attribute__((packed, aligned (8)));
 226
 227 union ibmvfc_npiv_login_data {
 228         struct ibmvfc_npiv_login login;
 229         struct ibmvfc_npiv_login_resp resp;
 230 }__attribute__((packed, aligned (8)));
 231
 232 struct ibmvfc_discover_targets_buf {
 233         u32 scsi_id[1];
 234 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 235 };
 236
 237 struct ibmvfc_discover_targets {
 238         struct ibmvfc_mad_common common;
 239         struct srp_direct_buf buffer;
 240         u32 flags;
 241         u16 status;
 242         u16 error;
 243         u32 bufflen;
 244         u32 num_avail;
 245         u32 num_written;
 246         u64 reserved[2];
 247 }__attribute__((packed, aligned (8)));
 248
 249 enum ibmvfc_fc_reason {
 250         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 251         IBMVFC_INVALID_VERSION          = 0x02,
 252         IBMVFC_LOGICAL_ERROR            = 0x03,
 253         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 254         IBMVFC_LOGICAL_BUSY             = 0x05,
 255         IBMVFC_PROTOCOL_ERROR           = 0x07,
 256         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 257         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 258         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 259         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 260         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 261 };
 262
 263 enum ibmvfc_fc_type {
 264         IBMVFC_FABRIC_REJECT    = 0x01,
 265         IBMVFC_PORT_REJECT      = 0x02,
 266         IBMVFC_LS_REJECT                = 0x03,
 267         IBMVFC_FABRIC_BUSY      = 0x04,
 268         IBMVFC_PORT_BUSY                = 0x05,
 269         IBMVFC_BASIC_REJECT     = 0x06,
 270 };
 271
 272 enum ibmvfc_gs_explain {
 273         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 274 };
 275
 276 struct ibmvfc_port_login {
 277         struct ibmvfc_mad_common common;
 278         u64 scsi_id;
 279         u16 reserved;
 280         u16 fc_service_class;
 281         u32 blksz;
 282         u32 hdr_per_blk;
 283         u16 status;
 284         u16 error;              /* also fc_reason */
 285         u16 fc_explain;
 286         u16 fc_type;
 287         u32 reserved2;
 288         struct ibmvfc_service_parms service_parms;
 289         struct ibmvfc_service_parms service_parms_change;
 290         u64 reserved3[2];
 291 }__attribute__((packed, aligned (8)));
 292
 293 struct ibmvfc_prli_svc_parms {
 294         u8 type;
 295 #define IBMVFC_SCSI_FCP_TYPE            0x08
 296         u8 type_ext;
 297         u16 flags;
 298 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 299 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 300 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 301         u32 orig_pa;
 302         u32 resp_pa;
 303         u32 service_parms;
 304 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 305 #define IBMVFC_PRLI_RETRY                               0x00000100
 306 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 307 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 308 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 309 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 310 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 311 }__attribute__((packed, aligned (4)));
 312
 313 struct ibmvfc_process_login {
 314         struct ibmvfc_mad_common common;
 315         u64 scsi_id;
 316         struct ibmvfc_prli_svc_parms parms;
 317         u8 reserved[48];
 318         u16 status;
 319         u16 error;                      /* also fc_reason */
 320         u32 reserved2;
 321         u64 reserved3[2];
 322 }__attribute__((packed, aligned (8)));
 323
 324 struct ibmvfc_query_tgt {
 325         struct ibmvfc_mad_common common;
 326         u64 wwpn;
 327         u64 scsi_id;
 328         u16 status;
 329         u16 error;
 330         u16 fc_explain;
 331         u16 fc_type;
 332         u64 reserved[2];
 333 }__attribute__((packed, aligned (8)));
 334
 335 struct ibmvfc_implicit_logout {
 336         struct ibmvfc_mad_common common;
 337         u64 old_scsi_id;
 338         u64 reserved[2];
 339 }__attribute__((packed, aligned (8)));
 340
 341 struct ibmvfc_tmf {
 342         struct ibmvfc_mad_common common;
 343         u64 scsi_id;
 344         struct scsi_lun lun;
 345         u32 flags;
 346 #define IBMVFC_TMF_ABORT_TASK           0x02
 347 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 348 #define IBMVFC_TMF_LUN_RESET            0x10
 349 #define IBMVFC_TMF_TGT_RESET            0x20
 350 #define IBMVFC_TMF_LUA_VALID            0x40
 351         u32 cancel_key;
 352         u32 my_cancel_key;
 353         u32 pad;
 354         u64 reserved[2];
 355 }__attribute__((packed, aligned (8)));
 356
 357 enum ibmvfc_fcp_rsp_info_codes {
 358         RSP_NO_FAILURE          = 0x00,
 359         RSP_TMF_REJECTED                = 0x04,
 360         RSP_TMF_FAILED          = 0x05,
 361         RSP_TMF_INVALID_LUN     = 0x09,
 362 };
 363
 364 struct ibmvfc_fcp_rsp_info {
 365         u16 reserved;
 366         u8 rsp_code;
 367         u8 reserved2[4];
 368 }__attribute__((packed, aligned (2)));
 369
 370 enum ibmvfc_fcp_rsp_flags {
 371         FCP_BIDI_RSP                    = 0x80,
 372         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 373         FCP_BIDI_READ_RESID_OVER        = 0x20,
 374         FCP_CONF_REQ                    = 0x10,
 375         FCP_RESID_UNDER                 = 0x08,
 376         FCP_RESID_OVER                  = 0x04,
 377         FCP_SNS_LEN_VALID                       = 0x02,
 378         FCP_RSP_LEN_VALID                       = 0x01,
 379 };
 380
 381 union ibmvfc_fcp_rsp_data {
 382         struct ibmvfc_fcp_rsp_info info;
 383         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 384 }__attribute__((packed, aligned (8)));
 385
 386 struct ibmvfc_fcp_rsp {
 387         u64 reserved;
 388         u16 retry_delay_timer;
 389         u8 flags;
 390         u8 scsi_status;
 391         u32 fcp_resid;
 392         u32 fcp_sense_len;
 393         u32 fcp_rsp_len;
 394         union ibmvfc_fcp_rsp_data data;
 395 }__attribute__((packed, aligned (8)));
 396
 397 enum ibmvfc_cmd_flags {
 398         IBMVFC_SCATTERLIST      = 0x0001,
 399         IBMVFC_NO_MEM_DESC      = 0x0002,
 400         IBMVFC_READ                     = 0x0004,
 401         IBMVFC_WRITE            = 0x0008,
 402         IBMVFC_TMF                      = 0x0080,
 403         IBMVFC_CLASS_3_ERR      = 0x0100,
 404 };
 405
 406 enum ibmvfc_fc_task_attr {
 407         IBMVFC_SIMPLE_TASK      = 0x00,
 408         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 409         IBMVFC_ORDERED_TASK     = 0x02,
 410         IBMVFC_ACA_TASK         = 0x04,
 411 };
 412
 413 enum ibmvfc_fc_tmf_flags {
 414         IBMVFC_ABORT_TASK_SET   = 0x02,
 415         IBMVFC_LUN_RESET                = 0x10,
 416         IBMVFC_TARGET_RESET     = 0x20,
 417 };
 418
 419 struct ibmvfc_fcp_cmd_iu {
 420         struct scsi_lun lun;
 421         u8 crn;
 422         u8 pri_task_attr;
 423         u8 tmf_flags;
 424         u8 add_cdb_len;
 425 #define IBMVFC_RDDATA           0x02
 426 #define IBMVFC_WRDATA           0x01
 427         u8 cdb[IBMVFC_MAX_CDB_LEN];
 428         u32 xfer_len;
 429 }__attribute__((packed, aligned (4)));
 430
 431 struct ibmvfc_cmd {
 432         u64 task_tag;
 433         u32 frame_type;
 434         u32 payload_len;
 435         u32 resp_len;
 436         u32 adapter_resid;
 437         u16 status;
 438         u16 error;
 439         u16 flags;
 440         u16 response_flags;
 441 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 442         u32 cancel_key;
 443         u32 exchange_id;
 444         struct srp_direct_buf ext_func;
 445         struct srp_direct_buf ioba;
 446         struct srp_direct_buf resp;
 447         u64 correlation;
 448         u64 tgt_scsi_id;
 449         u64 tag;
 450         u64 reserved3[2];
 451         struct ibmvfc_fcp_cmd_iu iu;
 452         struct ibmvfc_fcp_rsp rsp;
 453 }__attribute__((packed, aligned (8)));
 454
 455 struct ibmvfc_passthru_fc_iu {
 456         u32 payload[7];
 457 #define IBMVFC_ADISC    0x52000000
 458         u32 response[7];
 459 };
 460
 461 struct ibmvfc_passthru_iu {
 462         u64 task_tag;
 463         u32 cmd_len;
 464         u32 rsp_len;
 465         u16 status;
 466         u16 error;
 467         u32 flags;
 468 #define IBMVFC_FC_ELS           0x01
 469         u32 cancel_key;
 470         u32 reserved;
 471         struct srp_direct_buf cmd;
 472         struct srp_direct_buf rsp;
 473         u64 correlation;
 474         u64 scsi_id;
 475         u64 tag;
 476         u64 reserved2[2];
 477 }__attribute__((packed, aligned (8)));
 478
 479 struct ibmvfc_passthru_mad {
 480         struct ibmvfc_mad_common common;
 481         struct srp_direct_buf cmd_ioba;
 482         struct ibmvfc_passthru_iu iu;
 483         struct ibmvfc_passthru_fc_iu fc_iu;
 484 }__attribute__((packed, aligned (8)));
 485
 486 struct ibmvfc_trace_start_entry {
 487         u32 xfer_len;
 488 }__attribute__((packed));
 489
 490 struct ibmvfc_trace_end_entry {
 491         u16 status;
 492         u16 error;
 493         u8 fcp_rsp_flags;
 494         u8 rsp_code;
 495         u8 scsi_status;
 496         u8 reserved;
 497 }__attribute__((packed));
 498
 499 struct ibmvfc_trace_entry {
 500         struct ibmvfc_event *evt;
 501         u32 time;
 502         u32 scsi_id;
 503         u32 lun;
 504         u8 fmt;
 505         u8 op_code;
 506         u8 tmf_flags;
 507         u8 type;
 508 #define IBMVFC_TRC_START        0x00
 509 #define IBMVFC_TRC_END          0xff
 510         union {
 511                 struct ibmvfc_trace_start_entry start;
 512                 struct ibmvfc_trace_end_entry end;
 513         } u;
 514 }__attribute__((packed, aligned (8)));
 515
 516 enum ibmvfc_crq_formats {
 517         IBMVFC_CMD_FORMAT               = 0x01,
 518         IBMVFC_ASYNC_EVENT      = 0x02,
 519         IBMVFC_MAD_FORMAT               = 0x04,
 520 };
 521
 522 enum ibmvfc_async_event {
 523         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 524         IBMVFC_AE_ELS_LOGO              = 0x0002,
 525         IBMVFC_AE_ELS_PRLO              = 0x0004,
 526         IBMVFC_AE_SCN_NPORT             = 0x0008,
 527         IBMVFC_AE_SCN_GROUP             = 0x0010,
 528         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 529         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 530         IBMVFC_AE_LINK_UP                       = 0x0080,
 531         IBMVFC_AE_LINK_DOWN             = 0x0100,
 532         IBMVFC_AE_LINK_DEAD             = 0x0200,
 533         IBMVFC_AE_HALT                  = 0x0400,
 534         IBMVFC_AE_RESUME                        = 0x0800,
 535         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 536 };
 537
 538 struct ibmvfc_crq {
 539         volatile u8 valid;
 540         volatile u8 format;
 541         u8 reserved[6];
 542         volatile u64 ioba;
 543 }__attribute__((packed, aligned (8)));
 544
 545 struct ibmvfc_crq_queue {
 546         struct ibmvfc_crq *msgs;
 547         int size, cur;
 548         dma_addr_t msg_token;
 549 };
 550
 551 enum ibmvfc_ae_link_state {
 552         IBMVFC_AE_LS_LINK_UP            = 0x01,
 553         IBMVFC_AE_LS_LINK_BOUNCED       = 0x02,
 554         IBMVFC_AE_LS_LINK_DOWN          = 0x04,
 555         IBMVFC_AE_LS_LINK_DEAD          = 0x08,
 556 };
 557
 558 struct ibmvfc_async_crq {
 559         volatile u8 valid;
 560         u8 link_state;
 561         u8 pad[2];
 562         u32 pad2;
 563         volatile u64 event;
 564         volatile u64 scsi_id;
 565         volatile u64 wwpn;
 566         volatile u64 node_name;
 567         u64 reserved;
 568 }__attribute__((packed, aligned (8)));
 569
 570 struct ibmvfc_async_crq_queue {
 571         struct ibmvfc_async_crq *msgs;
 572         int size, cur;
 573         dma_addr_t msg_token;
 574 };
 575
 576 union ibmvfc_iu {
 577         struct ibmvfc_mad_common mad_common;
 578         struct ibmvfc_npiv_login_mad npiv_login;
 579         struct ibmvfc_npiv_logout_mad npiv_logout;
 580         struct ibmvfc_discover_targets discover_targets;
 581         struct ibmvfc_port_login plogi;
 582         struct ibmvfc_process_login prli;
 583         struct ibmvfc_query_tgt query_tgt;
 584         struct ibmvfc_implicit_logout implicit_logout;
 585         struct ibmvfc_tmf tmf;
 586         struct ibmvfc_cmd cmd;
 587         struct ibmvfc_passthru_mad passthru;
 588 }__attribute__((packed, aligned (8)));
 589
 590 enum ibmvfc_target_action {
 591         IBMVFC_TGT_ACTION_NONE = 0,
 592         IBMVFC_TGT_ACTION_INIT,
 593         IBMVFC_TGT_ACTION_INIT_WAIT,
 594         IBMVFC_TGT_ACTION_DEL_RPORT,
 595 };
 596
 597 struct ibmvfc_target {
 598         struct list_head queue;
 599         struct ibmvfc_host *vhost;
 600         u64 scsi_id;
 601         u64 new_scsi_id;
 602         struct fc_rport *rport;
 603         int target_id;
 604         enum ibmvfc_target_action action;
 605         int need_login;
 606         int add_rport;
 607         int init_retries;
 608         int logo_rcvd;
 609         u32 cancel_key;
 610         struct ibmvfc_service_parms service_parms;
 611         struct ibmvfc_service_parms service_parms_change;
 612         struct fc_rport_identifiers ids;
 613         void (*job_step) (struct ibmvfc_target *);
 614         struct timer_list timer;
 615         struct kref kref;
 616 };
 617
 618 /* a unit of work for the hosting partition */
 619 struct ibmvfc_event {
 620         struct list_head queue;
 621         struct ibmvfc_host *vhost;
 622         struct ibmvfc_target *tgt;
 623         struct scsi_cmnd *cmnd;
 624         atomic_t free;
 625         union ibmvfc_iu *xfer_iu;
 626         void (*done) (struct ibmvfc_event *);
 627         struct ibmvfc_crq crq;
 628         union ibmvfc_iu iu;
 629         union ibmvfc_iu *sync_iu;
 630         struct srp_direct_buf *ext_list;
 631         dma_addr_t ext_list_token;
 632         struct completion comp;
 633         struct completion *eh_comp;
 634         struct timer_list timer;
 635 };
 636
 637 /* a pool of event structs for use */
 638 struct ibmvfc_event_pool {
 639         struct ibmvfc_event *events;
 640         u32 size;
 641         union ibmvfc_iu *iu_storage;
 642         dma_addr_t iu_token;
 643 };
 644
 645 enum ibmvfc_host_action {
 646         IBMVFC_HOST_ACTION_NONE = 0,
 647         IBMVFC_HOST_ACTION_LOGO,
 648         IBMVFC_HOST_ACTION_LOGO_WAIT,
 649         IBMVFC_HOST_ACTION_INIT,
 650         IBMVFC_HOST_ACTION_INIT_WAIT,
 651         IBMVFC_HOST_ACTION_QUERY,
 652         IBMVFC_HOST_ACTION_QUERY_TGTS,
 653         IBMVFC_HOST_ACTION_TGT_DEL,
 654         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 655         IBMVFC_HOST_ACTION_TGT_INIT,
 656         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 657 };
 658
 659 enum ibmvfc_host_state {
 660         IBMVFC_NO_CRQ = 0,
 661         IBMVFC_INITIALIZING,
 662         IBMVFC_ACTIVE,
 663         IBMVFC_HALTED,
 664         IBMVFC_LINK_DOWN,
 665         IBMVFC_LINK_DEAD,
 666         IBMVFC_HOST_OFFLINE,
 667 };
 668
 669 struct ibmvfc_host {
 670         char name[8];
 671         struct list_head queue;
 672         struct Scsi_Host *host;
 673         enum ibmvfc_host_state state;
 674         enum ibmvfc_host_action action;
 675 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 676 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 677 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 678         struct ibmvfc_trace_entry *trace;
 679         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 680         int num_targets;
 681         struct list_head targets;
 682         struct list_head sent;
 683         struct list_head free;
 684         struct device *dev;
 685         struct ibmvfc_event_pool pool;
 686         struct dma_pool *sg_pool;
 687         mempool_t *tgt_pool;
 688         struct ibmvfc_crq_queue crq;
 689         struct ibmvfc_async_crq_queue async_crq;
 690         struct ibmvfc_npiv_login login_info;
 691         union ibmvfc_npiv_login_data *login_buf;
 692         dma_addr_t login_buf_dma;
 693         int disc_buf_sz;
 694         int log_level;
 695         struct ibmvfc_discover_targets_buf *disc_buf;
 696         int task_set;
 697         int init_retries;
 698         int discovery_threads;
 699         int abort_threads;
 700         int client_migrated;
 701         int reinit;
 702         int delay_init;
 703         int scan_complete;
 704         int logged_in;
 705         int events_to_log;
 706 #define IBMVFC_AE_LINKUP        0x0001
 707 #define IBMVFC_AE_LINKDOWN      0x0002
 708 #define IBMVFC_AE_RSCN          0x0004
 709         dma_addr_t disc_buf_dma;
 710         unsigned int partition_number;
 711         char partition_name[97];
 712         void (*job_step) (struct ibmvfc_host *);
 713         struct task_struct *work_thread;
 714         struct tasklet_struct tasklet;
 715         struct work_struct rport_add_work_q;
 716         wait_queue_head_t init_wait_q;
 717         wait_queue_head_t work_wait_q;
 718 };
 719
 720 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 721
 722 #define tgt_dbg(t, fmt, ...)                    \
 723         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 724
 725 #define tgt_info(t, fmt, ...)           \
 726         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 727
 728 #define tgt_err(t, fmt, ...)            \
 729         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 730
 731 #define tgt_log(t, level, fmt, ...) \
 732         do { \
 733                 if ((t)->vhost->log_level >= level) \
 734                         tgt_err(t, fmt, ##__VA_ARGS__); \
 735         } while (0)
 736
 737 #define ibmvfc_dbg(vhost, ...) \
 738         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 739
 740 #define ibmvfc_log(vhost, level, ...) \
 741         do { \
 742                 if ((vhost)->log_level >= level) \
 743                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 744         } while (0)
 745
 746 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 747 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 748
 749 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 750 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 751 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 752 #else
 753 #define ibmvfc_create_trace_file(kobj, attr) 0
 754 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 755 #endif
 756
 757 #endif