linux/drivers/scsi/ibmvscsi/ibmvfc.h
<<
>>
Prefs
   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
  75enum ibmvfc_crq_valid {
  76        IBMVFC_CRQ_CMD_RSP              = 0x80,
  77        IBMVFC_CRQ_INIT_RSP             = 0xC0,
  78        IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  79};
  80
  81enum ibmvfc_crq_format {
  82        IBMVFC_CRQ_INIT                 = 0x01,
  83        IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  84        IBMVFC_PARTITION_MIGRATED       = 0x06,
  85};
  86
  87enum 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
  96enum 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
 113enum 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
 126enum 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
 138struct 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
 147struct ibmvfc_npiv_login_mad {
 148        struct ibmvfc_mad_common common;
 149        struct srp_direct_buf buffer;
 150}__attribute__((packed, aligned (8)));
 151
 152struct ibmvfc_npiv_logout_mad {
 153        struct ibmvfc_mad_common common;
 154}__attribute__((packed, aligned (8)));
 155
 156#define IBMVFC_MAX_NAME 256
 157
 158struct 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
 182struct 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
 191struct 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
 206struct 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
 231union ibmvfc_npiv_login_data {
 232        struct ibmvfc_npiv_login login;
 233        struct ibmvfc_npiv_login_resp resp;
 234}__attribute__((packed, aligned (8)));
 235
 236struct ibmvfc_discover_targets_buf {
 237        __be32 scsi_id[1];
 238#define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 239};
 240
 241struct 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
 253enum 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
 267enum 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
 276enum ibmvfc_gs_explain {
 277        IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 278};
 279
 280struct 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
 297struct 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
 317struct 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
 328struct 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
 339struct ibmvfc_implicit_logout {
 340        struct ibmvfc_mad_common common;
 341        __be64 old_scsi_id;
 342        __be64 reserved[2];
 343}__attribute__((packed, aligned (8)));
 344
 345struct 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
 362enum 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
 369struct ibmvfc_fcp_rsp_info {
 370        __be16 reserved;
 371        u8 rsp_code;
 372        u8 reserved2[4];
 373}__attribute__((packed, aligned (2)));
 374
 375enum 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
 386union 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
 391struct 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
 402enum 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
 411enum 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
 418enum ibmvfc_fc_tmf_flags {
 419        IBMVFC_ABORT_TASK_SET   = 0x02,
 420        IBMVFC_LUN_RESET                = 0x10,
 421        IBMVFC_TARGET_RESET     = 0x20,
 422};
 423
 424struct 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
 436struct 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
 460struct ibmvfc_passthru_fc_iu {
 461        __be32 payload[7];
 462#define IBMVFC_ADISC    0x52000000
 463        __be32 response[7];
 464};
 465
 466struct 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
 487struct 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
 494struct ibmvfc_trace_start_entry {
 495        u32 xfer_len;
 496}__attribute__((packed));
 497
 498struct 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
 507struct 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
 524enum ibmvfc_crq_formats {
 525        IBMVFC_CMD_FORMAT               = 0x01,
 526        IBMVFC_ASYNC_EVENT      = 0x02,
 527        IBMVFC_MAD_FORMAT               = 0x04,
 528};
 529
 530enum 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
 546struct ibmvfc_async_desc {
 547        const char *desc;
 548        enum ibmvfc_async_event ae;
 549        int log_level;
 550};
 551
 552struct ibmvfc_crq {
 553        volatile u8 valid;
 554        volatile u8 format;
 555        u8 reserved[6];
 556        volatile __be64 ioba;
 557}__attribute__((packed, aligned (8)));
 558
 559struct ibmvfc_crq_queue {
 560        struct ibmvfc_crq *msgs;
 561        int size, cur;
 562        dma_addr_t msg_token;
 563};
 564
 565enum 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
 572struct 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
 584struct ibmvfc_async_crq_queue {
 585        struct ibmvfc_async_crq *msgs;
 586        int size, cur;
 587        dma_addr_t msg_token;
 588};
 589
 590union 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
 604enum 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
 612struct 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 */
 634struct 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 */
 653struct 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
 660enum 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
 676enum 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
 686struct 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
 777