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