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