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 <scsi/viosrp.h>
  30
  31 #define IBMVFC_NAME     "ibmvfc"
  32 #define IBMVFC_DRIVER_VERSION           "1.0.11"
  33 #define IBMVFC_DRIVER_DATE              "(April 12, 2013)"
  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_ABORT_TIMEOUT            8
  42 #define IBMVFC_ABORT_WAIT_TIMEOUT       40
  43 #define IBMVFC_MAX_REQUESTS_DEFAULT     100
  44
  45 #define IBMVFC_DEBUG                    0
  46 #define IBMVFC_MAX_TARGETS              1024
  47 #define IBMVFC_MAX_LUN                  0xffffffff
  48 #define IBMVFC_MAX_SECTORS              0xffffu
  49 #define IBMVFC_MAX_DISC_THREADS 4
  50 #define IBMVFC_TGT_MEMPOOL_SZ           64
  51 #define IBMVFC_MAX_CMDS_PER_LUN 64
  52 #define IBMVFC_MAX_HOST_INIT_RETRIES    6
  53 #define IBMVFC_MAX_TGT_INIT_RETRIES             3
  54 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  55 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  56 #define IBMVFC_MAX_CDB_LEN              16
  57 #define IBMVFC_CLS3_ERROR               0
  58
  59 /*
  60  * Ensure we have resources for ERP and initialization:
  61  * 1 for ERP
  62  * 1 for initialization
  63  * 1 for NPIV Logout
  64  * 2 for BSG passthru
  65  * 2 for each discovery thread
  66  */
  67 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
  68
  69 #define IBMVFC_MAD_SUCCESS              0x00
  70 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  71 #define IBMVFC_MAD_FAILED               0xF7
  72 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  73 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  74
  75 enum ibmvfc_crq_valid {
  76         IBMVFC_CRQ_CMD_RSP              = 0x80,
  77         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  78         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  79 };
  80
  81 enum ibmvfc_crq_init_msg {
  82         IBMVFC_CRQ_INIT                 = 0x01,
  83         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  84 };
  85
  86 enum ibmvfc_crq_xport_evts {
  87         IBMVFC_PARTNER_FAILED           = 0x01,
  88         IBMVFC_PARTNER_DEREGISTER       = 0x02,
  89         IBMVFC_PARTITION_MIGRATED       = 0x06,
  90 };
  91
  92 enum ibmvfc_cmd_status_flags {
  93         IBMVFC_FABRIC_MAPPED            = 0x0001,
  94         IBMVFC_VIOS_FAILURE             = 0x0002,
  95         IBMVFC_FC_FAILURE                       = 0x0004,
  96         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  97         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  98         IBMVFC_VIOS_LOGGED              = 0x0020,
  99 };
 100
 101 enum ibmvfc_fabric_mapped_errors {
 102         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
 103         IBMVFC_XPORT_FAULT              = 0x0002,
 104         IBMVFC_CMD_TIMEOUT              = 0x0003,
 105         IBMVFC_ENETDOWN                 = 0x0004,
 106         IBMVFC_HW_FAILURE                       = 0x0005,
 107         IBMVFC_LINK_DOWN_ERR            = 0x0006,
 108         IBMVFC_LINK_DEAD_ERR            = 0x0007,
 109         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
 110         IBMVFC_XPORT_BUSY                       = 0x000A,
 111         IBMVFC_XPORT_DEAD                       = 0x000B,
 112         IBMVFC_CONFIG_ERROR             = 0x000C,
 113         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 114         IBMVFC_LINK_HALTED              = 0x000E,
 115         IBMVFC_XPORT_GENERAL            = 0x8000,
 116 };
 117
 118 enum ibmvfc_vios_errors {
 119         IBMVFC_CRQ_FAILURE                      = 0x0001,
 120         IBMVFC_SW_FAILURE                               = 0x0002,
 121         IBMVFC_INVALID_PARAMETER                = 0x0003,
 122         IBMVFC_MISSING_PARAMETER                = 0x0004,
 123         IBMVFC_HOST_IO_BUS                      = 0x0005,
 124         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 125         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 126         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 127         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 128         IBMVFC_COMMAND_FAILED                   = 0x8000,
 129 };
 130
 131 enum ibmvfc_mad_types {
 132         IBMVFC_NPIV_LOGIN               = 0x0001,
 133         IBMVFC_DISC_TARGETS     = 0x0002,
 134         IBMVFC_PORT_LOGIN               = 0x0004,
 135         IBMVFC_PROCESS_LOGIN    = 0x0008,
 136         IBMVFC_QUERY_TARGET     = 0x0010,
 137         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 138         IBMVFC_PASSTHRU         = 0x0200,
 139         IBMVFC_TMF_MAD          = 0x0100,
 140         IBMVFC_NPIV_LOGOUT      = 0x0800,
 141 };
 142
 143 struct ibmvfc_mad_common {
 144         __be32 version;
 145         __be32 reserved;
 146         __be32 opcode;
 147         __be16 status;
 148         __be16 length;
 149         __be64 tag;
 150 }__attribute__((packed, aligned (8)));
 151
 152 struct ibmvfc_npiv_login_mad {
 153         struct ibmvfc_mad_common common;
 154         struct srp_direct_buf buffer;
 155 }__attribute__((packed, aligned (8)));
 156
 157 struct ibmvfc_npiv_logout_mad {
 158         struct ibmvfc_mad_common common;
 159 }__attribute__((packed, aligned (8)));
 160
 161 #define IBMVFC_MAX_NAME 256
 162
 163 struct ibmvfc_npiv_login {
 164         __be32 ostype;
 165 #define IBMVFC_OS_LINUX 0x02
 166         __be32 pad;
 167         __be64 max_dma_len;
 168         __be32 max_payload;
 169         __be32 max_response;
 170         __be32 partition_num;
 171         __be32 vfc_frame_version;
 172         __be16 fcp_version;
 173         __be16 flags;
 174 #define IBMVFC_CLIENT_MIGRATED  0x01
 175 #define IBMVFC_FLUSH_ON_HALT            0x02
 176         __be32 max_cmds;
 177         __be64 capabilities;
 178 #define IBMVFC_CAN_MIGRATE              0x01
 179         __be64 node_name;
 180         struct srp_direct_buf async;
 181         u8 partition_name[IBMVFC_MAX_NAME];
 182         u8 device_name[IBMVFC_MAX_NAME];
 183         u8 drc_name[IBMVFC_MAX_NAME];
 184         __be64 reserved2[2];
 185 }__attribute__((packed, aligned (8)));
 186
 187 struct ibmvfc_common_svc_parms {
 188         __be16 fcph_version;
 189         __be16 b2b_credit;
 190         __be16 features;
 191         __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 192         __be32 ratov;
 193         __be32 edtov;
 194 }__attribute__((packed, aligned (4)));
 195
 196 struct ibmvfc_service_parms {
 197         struct ibmvfc_common_svc_parms common;
 198         u8 port_name[8];
 199         u8 node_name[8];
 200         __be32 class1_parms[4];
 201         __be32 class2_parms[4];
 202         __be32 class3_parms[4];
 203         __be32 obsolete[4];
 204         __be32 vendor_version[4];
 205         __be32 services_avail[2];
 206         __be32 ext_len;
 207         __be32 reserved[30];
 208         __be32 clk_sync_qos[2];
 209 }__attribute__((packed, aligned (4)));
 210
 211 struct ibmvfc_npiv_login_resp {
 212         __be32 version;
 213         __be16 status;
 214         __be16 error;
 215         __be32 flags;
 216 #define IBMVFC_NATIVE_FC                0x01
 217         __be32 reserved;
 218         __be64 capabilities;
 219 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 220 #define IBMVFC_CAN_SUPPRESS_ABTS        0x10
 221         __be32 max_cmds;
 222         __be32 scsi_id_sz;
 223         __be64 max_dma_len;
 224         __be64 scsi_id;
 225         __be64 port_name;
 226         __be64 node_name;
 227         __be64 link_speed;
 228         u8 partition_name[IBMVFC_MAX_NAME];
 229         u8 device_name[IBMVFC_MAX_NAME];
 230         u8 port_loc_code[IBMVFC_MAX_NAME];
 231         u8 drc_name[IBMVFC_MAX_NAME];
 232         struct ibmvfc_service_parms service_parms;
 233         __be64 reserved2;
 234 }__attribute__((packed, aligned (8)));
 235
 236 union ibmvfc_npiv_login_data {
 237         struct ibmvfc_npiv_login login;
 238         struct ibmvfc_npiv_login_resp resp;
 239 }__attribute__((packed, aligned (8)));
 240
 241 struct ibmvfc_discover_targets_buf {
 242         __be32 scsi_id[1];
 243 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 244 };
 245
 246 struct ibmvfc_discover_targets {
 247         struct ibmvfc_mad_common common;
 248         struct srp_direct_buf buffer;
 249         __be32 flags;
 250         __be16 status;
 251         __be16 error;
 252         __be32 bufflen;
 253         __be32 num_avail;
 254         __be32 num_written;
 255         __be64 reserved[2];
 256 }__attribute__((packed, aligned (8)));
 257
 258 enum ibmvfc_fc_reason {
 259         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 260         IBMVFC_INVALID_VERSION          = 0x02,
 261         IBMVFC_LOGICAL_ERROR            = 0x03,
 262         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 263         IBMVFC_LOGICAL_BUSY             = 0x05,
 264         IBMVFC_PROTOCOL_ERROR           = 0x07,
 265         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 266         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 267         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 268         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 269         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 270 };
 271
 272 enum ibmvfc_fc_type {
 273         IBMVFC_FABRIC_REJECT    = 0x01,
 274         IBMVFC_PORT_REJECT      = 0x02,
 275         IBMVFC_LS_REJECT                = 0x03,
 276         IBMVFC_FABRIC_BUSY      = 0x04,
 277         IBMVFC_PORT_BUSY                = 0x05,
 278         IBMVFC_BASIC_REJECT     = 0x06,
 279 };
 280
 281 enum ibmvfc_gs_explain {
 282         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 283 };
 284
 285 struct ibmvfc_port_login {
 286         struct ibmvfc_mad_common common;
 287         __be64 scsi_id;
 288         __be16 reserved;
 289         __be16 fc_service_class;
 290         __be32 blksz;
 291         __be32 hdr_per_blk;
 292         __be16 status;
 293         __be16 error;           /* also fc_reason */
 294         __be16 fc_explain;
 295         __be16 fc_type;
 296         __be32 reserved2;
 297         struct ibmvfc_service_parms service_parms;
 298         struct ibmvfc_service_parms service_parms_change;
 299         __be64 reserved3[2];
 300 }__attribute__((packed, aligned (8)));
 301
 302 struct ibmvfc_prli_svc_parms {
 303         u8 type;
 304 #define IBMVFC_SCSI_FCP_TYPE            0x08
 305         u8 type_ext;
 306         __be16 flags;
 307 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 308 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 309 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 310         __be32 orig_pa;
 311         __be32 resp_pa;
 312         __be32 service_parms;
 313 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 314 #define IBMVFC_PRLI_RETRY                               0x00000100
 315 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 316 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 317 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 318 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 319 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 320 }__attribute__((packed, aligned (4)));
 321
 322 struct ibmvfc_process_login {
 323         struct ibmvfc_mad_common common;
 324         __be64 scsi_id;
 325         struct ibmvfc_prli_svc_parms parms;
 326         u8 reserved[48];
 327         __be16 status;
 328         __be16 error;                   /* also fc_reason */
 329         __be32 reserved2;
 330         __be64 reserved3[2];
 331 }__attribute__((packed, aligned (8)));
 332
 333 struct ibmvfc_query_tgt {
 334         struct ibmvfc_mad_common common;
 335         __be64 wwpn;
 336         __be64 scsi_id;
 337         __be16 status;
 338         __be16 error;
 339         __be16 fc_explain;
 340         __be16 fc_type;
 341         __be64 reserved[2];
 342 }__attribute__((packed, aligned (8)));
 343
 344 struct ibmvfc_implicit_logout {
 345         struct ibmvfc_mad_common common;
 346         __be64 old_scsi_id;
 347         __be64 reserved[2];
 348 }__attribute__((packed, aligned (8)));
 349
 350 struct ibmvfc_tmf {
 351         struct ibmvfc_mad_common common;
 352         __be64 scsi_id;
 353         struct scsi_lun lun;
 354         __be32 flags;
 355 #define IBMVFC_TMF_ABORT_TASK           0x02
 356 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 357 #define IBMVFC_TMF_LUN_RESET            0x10
 358 #define IBMVFC_TMF_TGT_RESET            0x20
 359 #define IBMVFC_TMF_LUA_VALID            0x40
 360 #define IBMVFC_TMF_SUPPRESS_ABTS        0x80
 361         __be32 cancel_key;
 362         __be32 my_cancel_key;
 363         __be32 pad;
 364         __be64 reserved[2];
 365 }__attribute__((packed, aligned (8)));
 366
 367 enum ibmvfc_fcp_rsp_info_codes {
 368         RSP_NO_FAILURE          = 0x00,
 369         RSP_TMF_REJECTED                = 0x04,
 370         RSP_TMF_FAILED          = 0x05,
 371         RSP_TMF_INVALID_LUN     = 0x09,
 372 };
 373
 374 struct ibmvfc_fcp_rsp_info {
 375         u8 reserved[3];
 376         u8 rsp_code;
 377         u8 reserved2[4];
 378 }__attribute__((packed, aligned (2)));
 379
 380 enum ibmvfc_fcp_rsp_flags {
 381         FCP_BIDI_RSP                    = 0x80,
 382         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 383         FCP_BIDI_READ_RESID_OVER        = 0x20,
 384         FCP_CONF_REQ                    = 0x10,
 385         FCP_RESID_UNDER                 = 0x08,
 386         FCP_RESID_OVER                  = 0x04,
 387         FCP_SNS_LEN_VALID                       = 0x02,
 388         FCP_RSP_LEN_VALID                       = 0x01,
 389 };
 390
 391 union ibmvfc_fcp_rsp_data {
 392         struct ibmvfc_fcp_rsp_info info;
 393         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 394 }__attribute__((packed, aligned (8)));
 395
 396 struct ibmvfc_fcp_rsp {
 397         __be64 reserved;
 398         __be16 retry_delay_timer;
 399         u8 flags;
 400         u8 scsi_status;
 401         __be32 fcp_resid;
 402         __be32 fcp_sense_len;
 403         __be32 fcp_rsp_len;
 404         union ibmvfc_fcp_rsp_data data;
 405 }__attribute__((packed, aligned (8)));
 406
 407 enum ibmvfc_cmd_flags {
 408         IBMVFC_SCATTERLIST      = 0x0001,
 409         IBMVFC_NO_MEM_DESC      = 0x0002,
 410         IBMVFC_READ                     = 0x0004,
 411         IBMVFC_WRITE            = 0x0008,
 412         IBMVFC_TMF                      = 0x0080,
 413         IBMVFC_CLASS_3_ERR      = 0x0100,
 414 };
 415
 416 enum ibmvfc_fc_task_attr {
 417         IBMVFC_SIMPLE_TASK      = 0x00,
 418         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 419         IBMVFC_ORDERED_TASK     = 0x02,
 420         IBMVFC_ACA_TASK         = 0x04,
 421 };
 422
 423 enum ibmvfc_fc_tmf_flags {
 424         IBMVFC_ABORT_TASK_SET   = 0x02,
 425         IBMVFC_LUN_RESET                = 0x10,
 426         IBMVFC_TARGET_RESET     = 0x20,
 427 };
 428
 429 struct ibmvfc_fcp_cmd_iu {
 430         struct scsi_lun lun;
 431         u8 crn;
 432         u8 pri_task_attr;
 433         u8 tmf_flags;
 434         u8 add_cdb_len;
 435 #define IBMVFC_RDDATA           0x02
 436 #define IBMVFC_WRDATA           0x01
 437         u8 cdb[IBMVFC_MAX_CDB_LEN];
 438         __be32 xfer_len;
 439 }__attribute__((packed, aligned (4)));
 440
 441 struct ibmvfc_cmd {
 442         __be64 task_tag;
 443         __be32 frame_type;
 444         __be32 payload_len;
 445         __be32 resp_len;
 446         __be32 adapter_resid;
 447         __be16 status;
 448         __be16 error;
 449         __be16 flags;
 450         __be16 response_flags;
 451 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 452         __be32 cancel_key;
 453         __be32 exchange_id;
 454         struct srp_direct_buf ext_func;
 455         struct srp_direct_buf ioba;
 456         struct srp_direct_buf resp;
 457         __be64 correlation;
 458         __be64 tgt_scsi_id;
 459         __be64 tag;
 460         __be64 reserved3[2];
 461         struct ibmvfc_fcp_cmd_iu iu;
 462         struct ibmvfc_fcp_rsp rsp;
 463 }__attribute__((packed, aligned (8)));
 464
 465 struct ibmvfc_passthru_fc_iu {
 466         __be32 payload[7];
 467 #define IBMVFC_ADISC    0x52000000
 468         __be32 response[7];
 469 };
 470
 471 struct ibmvfc_passthru_iu {
 472         __be64 task_tag;
 473         __be32 cmd_len;
 474         __be32 rsp_len;
 475         __be16 status;
 476         __be16 error;
 477         __be32 flags;
 478 #define IBMVFC_FC_ELS           0x01
 479 #define IBMVFC_FC_CT_IU         0x02
 480         __be32 cancel_key;
 481 #define IBMVFC_PASSTHRU_CANCEL_KEY      0x80000000
 482 #define IBMVFC_INTERNAL_CANCEL_KEY      0x80000001
 483         __be32 reserved;
 484         struct srp_direct_buf cmd;
 485         struct srp_direct_buf rsp;
 486         __be64 correlation;
 487         __be64 scsi_id;
 488         __be64 tag;
 489         __be64 reserved2[2];
 490 }__attribute__((packed, aligned (8)));
 491
 492 struct ibmvfc_passthru_mad {
 493         struct ibmvfc_mad_common common;
 494         struct srp_direct_buf cmd_ioba;
 495         struct ibmvfc_passthru_iu iu;
 496         struct ibmvfc_passthru_fc_iu fc_iu;
 497 }__attribute__((packed, aligned (8)));
 498
 499 struct ibmvfc_trace_start_entry {
 500         u32 xfer_len;
 501 }__attribute__((packed));
 502
 503 struct ibmvfc_trace_end_entry {
 504         u16 status;
 505         u16 error;
 506         u8 fcp_rsp_flags;
 507         u8 rsp_code;
 508         u8 scsi_status;
 509         u8 reserved;
 510 }__attribute__((packed));
 511
 512 struct ibmvfc_trace_entry {
 513         struct ibmvfc_event *evt;
 514         u32 time;
 515         u32 scsi_id;
 516         u32 lun;
 517         u8 fmt;
 518         u8 op_code;
 519         u8 tmf_flags;
 520         u8 type;
 521 #define IBMVFC_TRC_START        0x00
 522 #define IBMVFC_TRC_END          0xff
 523         union {
 524                 struct ibmvfc_trace_start_entry start;
 525                 struct ibmvfc_trace_end_entry end;
 526         } u;
 527 }__attribute__((packed, aligned (8)));
 528
 529 enum ibmvfc_crq_formats {
 530         IBMVFC_CMD_FORMAT               = 0x01,
 531         IBMVFC_ASYNC_EVENT      = 0x02,
 532         IBMVFC_MAD_FORMAT               = 0x04,
 533 };
 534
 535 enum ibmvfc_async_event {
 536         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 537         IBMVFC_AE_ELS_LOGO              = 0x0002,
 538         IBMVFC_AE_ELS_PRLO              = 0x0004,
 539         IBMVFC_AE_SCN_NPORT             = 0x0008,
 540         IBMVFC_AE_SCN_GROUP             = 0x0010,
 541         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 542         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 543         IBMVFC_AE_LINK_UP                       = 0x0080,
 544         IBMVFC_AE_LINK_DOWN             = 0x0100,
 545         IBMVFC_AE_LINK_DEAD             = 0x0200,
 546         IBMVFC_AE_HALT                  = 0x0400,
 547         IBMVFC_AE_RESUME                        = 0x0800,
 548         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 549 };
 550
 551 struct ibmvfc_async_desc {
 552         const char *desc;
 553         enum ibmvfc_async_event ae;
 554         int log_level;
 555 };
 556
 557 struct ibmvfc_crq {
 558         volatile u8 valid;
 559         volatile u8 format;
 560         u8 reserved[6];
 561         volatile __be64 ioba;
 562 }__attribute__((packed, aligned (8)));
 563
 564 struct ibmvfc_crq_queue {
 565         struct ibmvfc_crq *msgs;
 566         int size, cur;
 567         dma_addr_t msg_token;
 568 };
 569
 570 enum ibmvfc_ae_link_state {
 571         IBMVFC_AE_LS_LINK_UP            = 0x01,
 572         IBMVFC_AE_LS_LINK_BOUNCED       = 0x02,
 573         IBMVFC_AE_LS_LINK_DOWN          = 0x04,
 574         IBMVFC_AE_LS_LINK_DEAD          = 0x08,
 575 };
 576
 577 struct ibmvfc_async_crq {
 578         volatile u8 valid;
 579         u8 link_state;
 580         u8 pad[2];
 581         __be32 pad2;
 582         volatile __be64 event;
 583         volatile __be64 scsi_id;
 584         volatile __be64 wwpn;
 585         volatile __be64 node_name;
 586         __be64 reserved;
 587 }__attribute__((packed, aligned (8)));
 588
 589 struct ibmvfc_async_crq_queue {
 590         struct ibmvfc_async_crq *msgs;
 591         int size, cur;
 592         dma_addr_t msg_token;
 593 };
 594
 595 union ibmvfc_iu {
 596         struct ibmvfc_mad_common mad_common;
 597         struct ibmvfc_npiv_login_mad npiv_login;
 598         struct ibmvfc_npiv_logout_mad npiv_logout;
 599         struct ibmvfc_discover_targets discover_targets;
 600         struct ibmvfc_port_login plogi;
 601         struct ibmvfc_process_login prli;
 602         struct ibmvfc_query_tgt query_tgt;
 603         struct ibmvfc_implicit_logout implicit_logout;
 604         struct ibmvfc_tmf tmf;
 605         struct ibmvfc_cmd cmd;
 606         struct ibmvfc_passthru_mad passthru;
 607 }__attribute__((packed, aligned (8)));
 608
 609 enum ibmvfc_target_action {
 610         IBMVFC_TGT_ACTION_NONE = 0,
 611         IBMVFC_TGT_ACTION_INIT,
 612         IBMVFC_TGT_ACTION_INIT_WAIT,
 613         IBMVFC_TGT_ACTION_DEL_RPORT,
 614         IBMVFC_TGT_ACTION_DELETED_RPORT,
 615 };
 616
 617 struct ibmvfc_target {
 618         struct list_head queue;
 619         struct ibmvfc_host *vhost;
 620         u64 scsi_id;
 621         u64 new_scsi_id;
 622         struct fc_rport *rport;
 623         int target_id;
 624         enum ibmvfc_target_action action;
 625         int need_login;
 626         int add_rport;
 627         int init_retries;
 628         int logo_rcvd;
 629         u32 cancel_key;
 630         struct ibmvfc_service_parms service_parms;
 631         struct ibmvfc_service_parms service_parms_change;
 632         struct fc_rport_identifiers ids;
 633         void (*job_step) (struct ibmvfc_target *);
 634         struct timer_list timer;
 635         struct kref kref;
 636 };
 637
 638 /* a unit of work for the hosting partition */
 639 struct ibmvfc_event {
 640         struct list_head queue;
 641         struct ibmvfc_host *vhost;
 642         struct ibmvfc_target *tgt;
 643         struct scsi_cmnd *cmnd;
 644         atomic_t free;
 645         union ibmvfc_iu *xfer_iu;
 646         void (*done) (struct ibmvfc_event *);
 647         struct ibmvfc_crq crq;
 648         union ibmvfc_iu iu;
 649         union ibmvfc_iu *sync_iu;
 650         struct srp_direct_buf *ext_list;
 651         dma_addr_t ext_list_token;
 652         struct completion comp;
 653         struct completion *eh_comp;
 654         struct timer_list timer;
 655 };
 656
 657 /* a pool of event structs for use */
 658 struct ibmvfc_event_pool {
 659         struct ibmvfc_event *events;
 660         u32 size;
 661         union ibmvfc_iu *iu_storage;
 662         dma_addr_t iu_token;
 663 };
 664
 665 enum ibmvfc_host_action {
 666         IBMVFC_HOST_ACTION_NONE = 0,
 667         IBMVFC_HOST_ACTION_RESET,
 668         IBMVFC_HOST_ACTION_REENABLE,
 669         IBMVFC_HOST_ACTION_LOGO,
 670         IBMVFC_HOST_ACTION_LOGO_WAIT,
 671         IBMVFC_HOST_ACTION_INIT,
 672         IBMVFC_HOST_ACTION_INIT_WAIT,
 673         IBMVFC_HOST_ACTION_QUERY,
 674         IBMVFC_HOST_ACTION_QUERY_TGTS,
 675         IBMVFC_HOST_ACTION_TGT_DEL,
 676         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 677         IBMVFC_HOST_ACTION_TGT_INIT,
 678         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 679 };
 680
 681 enum ibmvfc_host_state {
 682         IBMVFC_NO_CRQ = 0,
 683         IBMVFC_INITIALIZING,
 684         IBMVFC_ACTIVE,
 685         IBMVFC_HALTED,
 686         IBMVFC_LINK_DOWN,
 687         IBMVFC_LINK_DEAD,
 688         IBMVFC_HOST_OFFLINE,
 689 };
 690
 691 struct ibmvfc_host {
 692         char name[8];
 693         struct list_head queue;
 694         struct Scsi_Host *host;
 695         enum ibmvfc_host_state state;
 696         enum ibmvfc_host_action action;
 697 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 698 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 699 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 700         struct ibmvfc_trace_entry *trace;
 701         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 702         int num_targets;
 703         struct list_head targets;
 704         struct list_head sent;
 705         struct list_head free;
 706         struct device *dev;
 707         struct ibmvfc_event_pool pool;
 708         struct dma_pool *sg_pool;
 709         mempool_t *tgt_pool;
 710         struct ibmvfc_crq_queue crq;
 711         struct ibmvfc_async_crq_queue async_crq;
 712         struct ibmvfc_npiv_login login_info;
 713         union ibmvfc_npiv_login_data *login_buf;
 714         dma_addr_t login_buf_dma;
 715         int disc_buf_sz;
 716         int log_level;
 717         struct ibmvfc_discover_targets_buf *disc_buf;
 718         struct mutex passthru_mutex;
 719         int task_set;
 720         int init_retries;
 721         int discovery_threads;
 722         int abort_threads;
 723         int client_migrated;
 724         int reinit;
 725         int delay_init;
 726         int scan_complete;
 727         int logged_in;
 728         int aborting_passthru;
 729         int events_to_log;
 730 #define IBMVFC_AE_LINKUP        0x0001
 731 #define IBMVFC_AE_LINKDOWN      0x0002
 732 #define IBMVFC_AE_RSCN          0x0004
 733         dma_addr_t disc_buf_dma;
 734         unsigned int partition_number;
 735         char partition_name[97];
 736         void (*job_step) (struct ibmvfc_host *);
 737         struct task_struct *work_thread;
 738         struct tasklet_struct tasklet;
 739         struct work_struct rport_add_work_q;
 740         wait_queue_head_t init_wait_q;
 741         wait_queue_head_t work_wait_q;
 742 };
 743
 744 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 745
 746 #define tgt_dbg(t, fmt, ...)                    \
 747         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 748
 749 #define tgt_info(t, fmt, ...)           \
 750         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 751
 752 #define tgt_err(t, fmt, ...)            \
 753         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 754
 755 #define tgt_log(t, level, fmt, ...) \
 756         do { \
 757                 if ((t)->vhost->log_level >= level) \
 758                         tgt_err(t, fmt, ##__VA_ARGS__); \
 759         } while (0)
 760
 761 #define ibmvfc_dbg(vhost, ...) \
 762         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 763
 764 #define ibmvfc_log(vhost, level, ...) \
 765         do { \
 766                 if ((vhost)->log_level >= level) \
 767                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 768         } while (0)
 769
 770 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 771 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 772
 773 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 774 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 775 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 776 #else
 777 #define ibmvfc_create_trace_file(kobj, attr) 0
 778 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 779 #endif
 780
 781 #endif