drivers/scsi/ibmvscsi/ibmvfc.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter
   4  *
   5  * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation
   6  *
   7  * Copyright (C) IBM Corporation, 2008
   8  */
   9
  10 #ifndef _IBMVFC_H
  11 #define _IBMVFC_H
  12
  13 #include <linux/list.h>
  14 #include <linux/types.h>
  15 #include <scsi/viosrp.h>
  16
  17 #define IBMVFC_NAME     "ibmvfc"
  18 #define IBMVFC_DRIVER_VERSION           "1.0.11"
  19 #define IBMVFC_DRIVER_DATE              "(April 12, 2013)"
  20
  21 #define IBMVFC_DEFAULT_TIMEOUT  60
  22 #define IBMVFC_ADISC_CANCEL_TIMEOUT     45
  23 #define IBMVFC_ADISC_TIMEOUT            15
  24 #define IBMVFC_ADISC_PLUS_CANCEL_TIMEOUT        \
  25                 (IBMVFC_ADISC_TIMEOUT + IBMVFC_ADISC_CANCEL_TIMEOUT)
  26 #define IBMVFC_INIT_TIMEOUT             120
  27 #define IBMVFC_ABORT_TIMEOUT            8
  28 #define IBMVFC_ABORT_WAIT_TIMEOUT       40
  29 #define IBMVFC_MAX_REQUESTS_DEFAULT     100
  30
  31 #define IBMVFC_DEBUG                    0
  32 #define IBMVFC_MAX_TARGETS              1024
  33 #define IBMVFC_MAX_LUN                  0xffffffff
  34 #define IBMVFC_MAX_SECTORS              0xffffu
  35 #define IBMVFC_MAX_DISC_THREADS 4
  36 #define IBMVFC_TGT_MEMPOOL_SZ           64
  37 #define IBMVFC_MAX_CMDS_PER_LUN 64
  38 #define IBMVFC_MAX_HOST_INIT_RETRIES    6
  39 #define IBMVFC_MAX_TGT_INIT_RETRIES             3
  40 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  41 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  42 #define IBMVFC_MAX_CDB_LEN              16
  43 #define IBMVFC_CLS3_ERROR               0
  44
  45 /*
  46  * Ensure we have resources for ERP and initialization:
  47  * 1 for ERP
  48  * 1 for initialization
  49  * 1 for NPIV Logout
  50  * 2 for BSG passthru
  51  * 2 for each discovery thread
  52  */
  53 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
  54
  55 #define IBMVFC_MAD_SUCCESS              0x00
  56 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  57 #define IBMVFC_MAD_FAILED               0xF7
  58 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  59 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  60
  61 enum ibmvfc_crq_valid {
  62         IBMVFC_CRQ_CMD_RSP              = 0x80,
  63         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  64         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  65 };
  66
  67 enum ibmvfc_crq_init_msg {
  68         IBMVFC_CRQ_INIT                 = 0x01,
  69         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  70 };
  71
  72 enum ibmvfc_crq_xport_evts {
  73         IBMVFC_PARTNER_FAILED           = 0x01,
  74         IBMVFC_PARTNER_DEREGISTER       = 0x02,
  75         IBMVFC_PARTITION_MIGRATED       = 0x06,
  76 };
  77
  78 enum ibmvfc_cmd_status_flags {
  79         IBMVFC_FABRIC_MAPPED            = 0x0001,
  80         IBMVFC_VIOS_FAILURE             = 0x0002,
  81         IBMVFC_FC_FAILURE                       = 0x0004,
  82         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  83         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  84         IBMVFC_VIOS_LOGGED              = 0x0020,
  85 };
  86
  87 enum ibmvfc_fabric_mapped_errors {
  88         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  89         IBMVFC_XPORT_FAULT              = 0x0002,
  90         IBMVFC_CMD_TIMEOUT              = 0x0003,
  91         IBMVFC_ENETDOWN                 = 0x0004,
  92         IBMVFC_HW_FAILURE                       = 0x0005,
  93         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  94         IBMVFC_LINK_DEAD_ERR            = 0x0007,
  95         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
  96         IBMVFC_XPORT_BUSY                       = 0x000A,
  97         IBMVFC_XPORT_DEAD                       = 0x000B,
  98         IBMVFC_CONFIG_ERROR             = 0x000C,
  99         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 100         IBMVFC_LINK_HALTED              = 0x000E,
 101         IBMVFC_XPORT_GENERAL            = 0x8000,
 102 };
 103
 104 enum ibmvfc_vios_errors {
 105         IBMVFC_CRQ_FAILURE                      = 0x0001,
 106         IBMVFC_SW_FAILURE                               = 0x0002,
 107         IBMVFC_INVALID_PARAMETER                = 0x0003,
 108         IBMVFC_MISSING_PARAMETER                = 0x0004,
 109         IBMVFC_HOST_IO_BUS                      = 0x0005,
 110         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 111         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 112         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 113         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 114         IBMVFC_COMMAND_FAILED                   = 0x8000,
 115 };
 116
 117 enum ibmvfc_mad_types {
 118         IBMVFC_NPIV_LOGIN               = 0x0001,
 119         IBMVFC_DISC_TARGETS     = 0x0002,
 120         IBMVFC_PORT_LOGIN               = 0x0004,
 121         IBMVFC_PROCESS_LOGIN    = 0x0008,
 122         IBMVFC_QUERY_TARGET     = 0x0010,
 123         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 124         IBMVFC_PASSTHRU         = 0x0200,
 125         IBMVFC_TMF_MAD          = 0x0100,
 126         IBMVFC_NPIV_LOGOUT      = 0x0800,
 127 };
 128
 129 struct ibmvfc_mad_common {
 130         __be32 version;
 131         __be32 reserved;
 132         __be32 opcode;
 133         __be16 status;
 134         __be16 length;
 135         __be64 tag;
 136 }__attribute__((packed, aligned (8)));
 137
 138 struct ibmvfc_npiv_login_mad {
 139         struct ibmvfc_mad_common common;
 140         struct srp_direct_buf buffer;
 141 }__attribute__((packed, aligned (8)));
 142
 143 struct ibmvfc_npiv_logout_mad {
 144         struct ibmvfc_mad_common common;
 145 }__attribute__((packed, aligned (8)));
 146
 147 #define IBMVFC_MAX_NAME 256
 148
 149 struct ibmvfc_npiv_login {
 150         __be32 ostype;
 151 #define IBMVFC_OS_LINUX 0x02
 152         __be32 pad;
 153         __be64 max_dma_len;
 154         __be32 max_payload;
 155         __be32 max_response;
 156         __be32 partition_num;
 157         __be32 vfc_frame_version;
 158         __be16 fcp_version;
 159         __be16 flags;
 160 #define IBMVFC_CLIENT_MIGRATED  0x01
 161 #define IBMVFC_FLUSH_ON_HALT            0x02
 162         __be32 max_cmds;
 163         __be64 capabilities;
 164 #define IBMVFC_CAN_MIGRATE              0x01
 165         __be64 node_name;
 166         struct srp_direct_buf async;
 167         u8 partition_name[IBMVFC_MAX_NAME];
 168         u8 device_name[IBMVFC_MAX_NAME];
 169         u8 drc_name[IBMVFC_MAX_NAME];
 170         __be64 reserved2[2];
 171 }__attribute__((packed, aligned (8)));
 172
 173 struct ibmvfc_common_svc_parms {
 174         __be16 fcph_version;
 175         __be16 b2b_credit;
 176         __be16 features;
 177         __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 178         __be32 ratov;
 179         __be32 edtov;
 180 }__attribute__((packed, aligned (4)));
 181
 182 struct ibmvfc_service_parms {
 183         struct ibmvfc_common_svc_parms common;
 184         u8 port_name[8];
 185         u8 node_name[8];
 186         __be32 class1_parms[4];
 187         __be32 class2_parms[4];
 188         __be32 class3_parms[4];
 189         __be32 obsolete[4];
 190         __be32 vendor_version[4];
 191         __be32 services_avail[2];
 192         __be32 ext_len;
 193         __be32 reserved[30];
 194         __be32 clk_sync_qos[2];
 195 }__attribute__((packed, aligned (4)));
 196
 197 struct ibmvfc_npiv_login_resp {
 198         __be32 version;
 199         __be16 status;
 200         __be16 error;
 201         __be32 flags;
 202 #define IBMVFC_NATIVE_FC                0x01
 203         __be32 reserved;
 204         __be64 capabilities;
 205 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 206 #define IBMVFC_CAN_SUPPRESS_ABTS        0x10
 207         __be32 max_cmds;
 208         __be32 scsi_id_sz;
 209         __be64 max_dma_len;
 210         __be64 scsi_id;
 211         __be64 port_name;
 212         __be64 node_name;
 213         __be64 link_speed;
 214         u8 partition_name[IBMVFC_MAX_NAME];
 215         u8 device_name[IBMVFC_MAX_NAME];
 216         u8 port_loc_code[IBMVFC_MAX_NAME];
 217         u8 drc_name[IBMVFC_MAX_NAME];
 218         struct ibmvfc_service_parms service_parms;
 219         __be64 reserved2;
 220 }__attribute__((packed, aligned (8)));
 221
 222 union ibmvfc_npiv_login_data {
 223         struct ibmvfc_npiv_login login;
 224         struct ibmvfc_npiv_login_resp resp;
 225 }__attribute__((packed, aligned (8)));
 226
 227 struct ibmvfc_discover_targets_buf {
 228         __be32 scsi_id[1];
 229 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 230 };
 231
 232 struct ibmvfc_discover_targets {
 233         struct ibmvfc_mad_common common;
 234         struct srp_direct_buf buffer;
 235         __be32 flags;
 236         __be16 status;
 237         __be16 error;
 238         __be32 bufflen;
 239         __be32 num_avail;
 240         __be32 num_written;
 241         __be64 reserved[2];
 242 }__attribute__((packed, aligned (8)));
 243
 244 enum ibmvfc_fc_reason {
 245         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 246         IBMVFC_INVALID_VERSION          = 0x02,
 247         IBMVFC_LOGICAL_ERROR            = 0x03,
 248         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 249         IBMVFC_LOGICAL_BUSY             = 0x05,
 250         IBMVFC_PROTOCOL_ERROR           = 0x07,
 251         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 252         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 253         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 254         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 255         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 256 };
 257
 258 enum ibmvfc_fc_type {
 259         IBMVFC_FABRIC_REJECT    = 0x01,
 260         IBMVFC_PORT_REJECT      = 0x02,
 261         IBMVFC_LS_REJECT                = 0x03,
 262         IBMVFC_FABRIC_BUSY      = 0x04,
 263         IBMVFC_PORT_BUSY                = 0x05,
 264         IBMVFC_BASIC_REJECT     = 0x06,
 265 };
 266
 267 enum ibmvfc_gs_explain {
 268         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 269 };
 270
 271 struct ibmvfc_port_login {
 272         struct ibmvfc_mad_common common;
 273         __be64 scsi_id;
 274         __be16 reserved;
 275         __be16 fc_service_class;
 276         __be32 blksz;
 277         __be32 hdr_per_blk;
 278         __be16 status;
 279         __be16 error;           /* also fc_reason */
 280         __be16 fc_explain;
 281         __be16 fc_type;
 282         __be32 reserved2;
 283         struct ibmvfc_service_parms service_parms;
 284         struct ibmvfc_service_parms service_parms_change;
 285         __be64 reserved3[2];
 286 }__attribute__((packed, aligned (8)));
 287
 288 struct ibmvfc_prli_svc_parms {
 289         u8 type;
 290 #define IBMVFC_SCSI_FCP_TYPE            0x08
 291         u8 type_ext;
 292         __be16 flags;
 293 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 294 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 295 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 296         __be32 orig_pa;
 297         __be32 resp_pa;
 298         __be32 service_parms;
 299 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 300 #define IBMVFC_PRLI_RETRY                               0x00000100
 301 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 302 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 303 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 304 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 305 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 306 }__attribute__((packed, aligned (4)));
 307
 308 struct ibmvfc_process_login {
 309         struct ibmvfc_mad_common common;
 310         __be64 scsi_id;
 311         struct ibmvfc_prli_svc_parms parms;
 312         u8 reserved[48];
 313         __be16 status;
 314         __be16 error;                   /* also fc_reason */
 315         __be32 reserved2;
 316         __be64 reserved3[2];
 317 }__attribute__((packed, aligned (8)));
 318
 319 struct ibmvfc_query_tgt {
 320         struct ibmvfc_mad_common common;
 321         __be64 wwpn;
 322         __be64 scsi_id;
 323         __be16 status;
 324         __be16 error;
 325         __be16 fc_explain;
 326         __be16 fc_type;
 327         __be64 reserved[2];
 328 }__attribute__((packed, aligned (8)));
 329
 330 struct ibmvfc_implicit_logout {
 331         struct ibmvfc_mad_common common;
 332         __be64 old_scsi_id;
 333         __be64 reserved[2];
 334 }__attribute__((packed, aligned (8)));
 335
 336 struct ibmvfc_tmf {
 337         struct ibmvfc_mad_common common;
 338         __be64 scsi_id;
 339         struct scsi_lun lun;
 340         __be32 flags;
 341 #define IBMVFC_TMF_ABORT_TASK           0x02
 342 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 343 #define IBMVFC_TMF_LUN_RESET            0x10
 344 #define IBMVFC_TMF_TGT_RESET            0x20
 345 #define IBMVFC_TMF_LUA_VALID            0x40
 346 #define IBMVFC_TMF_SUPPRESS_ABTS        0x80
 347         __be32 cancel_key;
 348         __be32 my_cancel_key;
 349         __be32 pad;
 350         __be64 reserved[2];
 351 }__attribute__((packed, aligned (8)));
 352
 353 enum ibmvfc_fcp_rsp_info_codes {
 354         RSP_NO_FAILURE          = 0x00,
 355         RSP_TMF_REJECTED                = 0x04,
 356         RSP_TMF_FAILED          = 0x05,
 357         RSP_TMF_INVALID_LUN     = 0x09,
 358 };
 359
 360 struct ibmvfc_fcp_rsp_info {
 361         u8 reserved[3];
 362         u8 rsp_code;
 363         u8 reserved2[4];
 364 }__attribute__((packed, aligned (2)));
 365
 366 enum ibmvfc_fcp_rsp_flags {
 367         FCP_BIDI_RSP                    = 0x80,
 368         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 369         FCP_BIDI_READ_RESID_OVER        = 0x20,
 370         FCP_CONF_REQ                    = 0x10,
 371         FCP_RESID_UNDER                 = 0x08,
 372         FCP_RESID_OVER                  = 0x04,
 373         FCP_SNS_LEN_VALID                       = 0x02,
 374         FCP_RSP_LEN_VALID                       = 0x01,
 375 };
 376
 377 union ibmvfc_fcp_rsp_data {
 378         struct ibmvfc_fcp_rsp_info info;
 379         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 380 }__attribute__((packed, aligned (8)));
 381
 382 struct ibmvfc_fcp_rsp {
 383         __be64 reserved;
 384         __be16 retry_delay_timer;
 385         u8 flags;
 386         u8 scsi_status;
 387         __be32 fcp_resid;
 388         __be32 fcp_sense_len;
 389         __be32 fcp_rsp_len;
 390         union ibmvfc_fcp_rsp_data data;
 391 }__attribute__((packed, aligned (8)));
 392
 393 enum ibmvfc_cmd_flags {
 394         IBMVFC_SCATTERLIST      = 0x0001,
 395         IBMVFC_NO_MEM_DESC      = 0x0002,
 396         IBMVFC_READ                     = 0x0004,
 397         IBMVFC_WRITE            = 0x0008,
 398         IBMVFC_TMF                      = 0x0080,
 399         IBMVFC_CLASS_3_ERR      = 0x0100,
 400 };
 401
 402 enum ibmvfc_fc_task_attr {
 403         IBMVFC_SIMPLE_TASK      = 0x00,
 404         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 405         IBMVFC_ORDERED_TASK     = 0x02,
 406         IBMVFC_ACA_TASK         = 0x04,
 407 };
 408
 409 enum ibmvfc_fc_tmf_flags {
 410         IBMVFC_ABORT_TASK_SET   = 0x02,
 411         IBMVFC_LUN_RESET                = 0x10,
 412         IBMVFC_TARGET_RESET     = 0x20,
 413 };
 414
 415 struct ibmvfc_fcp_cmd_iu {
 416         struct scsi_lun lun;
 417         u8 crn;
 418         u8 pri_task_attr;
 419         u8 tmf_flags;
 420         u8 add_cdb_len;
 421 #define IBMVFC_RDDATA           0x02
 422 #define IBMVFC_WRDATA           0x01
 423         u8 cdb[IBMVFC_MAX_CDB_LEN];
 424         __be32 xfer_len;
 425 }__attribute__((packed, aligned (4)));
 426
 427 struct ibmvfc_cmd {
 428         __be64 task_tag;
 429         __be32 frame_type;
 430         __be32 payload_len;
 431         __be32 resp_len;
 432         __be32 adapter_resid;
 433         __be16 status;
 434         __be16 error;
 435         __be16 flags;
 436         __be16 response_flags;
 437 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 438         __be32 cancel_key;
 439         __be32 exchange_id;
 440         struct srp_direct_buf ext_func;
 441         struct srp_direct_buf ioba;
 442         struct srp_direct_buf resp;
 443         __be64 correlation;
 444         __be64 tgt_scsi_id;
 445         __be64 tag;
 446         __be64 reserved3[2];
 447         struct ibmvfc_fcp_cmd_iu iu;
 448         struct ibmvfc_fcp_rsp rsp;
 449 }__attribute__((packed, aligned (8)));
 450
 451 struct ibmvfc_passthru_fc_iu {
 452         __be32 payload[7];
 453 #define IBMVFC_ADISC    0x52000000
 454         __be32 response[7];
 455 };
 456
 457 struct ibmvfc_passthru_iu {
 458         __be64 task_tag;
 459         __be32 cmd_len;
 460         __be32 rsp_len;
 461         __be16 status;
 462         __be16 error;
 463         __be32 flags;
 464 #define IBMVFC_FC_ELS           0x01
 465 #define IBMVFC_FC_CT_IU         0x02
 466         __be32 cancel_key;
 467 #define IBMVFC_PASSTHRU_CANCEL_KEY      0x80000000
 468 #define IBMVFC_INTERNAL_CANCEL_KEY      0x80000001
 469         __be32 reserved;
 470         struct srp_direct_buf cmd;
 471         struct srp_direct_buf rsp;
 472         __be64 correlation;
 473         __be64 scsi_id;
 474         __be64 tag;
 475         __be64 reserved2[2];
 476 }__attribute__((packed, aligned (8)));
 477
 478 struct ibmvfc_passthru_mad {
 479         struct ibmvfc_mad_common common;
 480         struct srp_direct_buf cmd_ioba;
 481         struct ibmvfc_passthru_iu iu;
 482         struct ibmvfc_passthru_fc_iu fc_iu;
 483 }__attribute__((packed, aligned (8)));
 484
 485 struct ibmvfc_trace_start_entry {
 486         u32 xfer_len;
 487 }__attribute__((packed));
 488
 489 struct ibmvfc_trace_end_entry {
 490         u16 status;
 491         u16 error;
 492         u8 fcp_rsp_flags;
 493         u8 rsp_code;
 494         u8 scsi_status;
 495         u8 reserved;
 496 }__attribute__((packed));
 497
 498 struct ibmvfc_trace_entry {
 499         struct ibmvfc_event *evt;
 500         u32 time;
 501         u32 scsi_id;
 502         u32 lun;
 503         u8 fmt;
 504         u8 op_code;
 505         u8 tmf_flags;
 506         u8 type;
 507 #define IBMVFC_TRC_START        0x00
 508 #define IBMVFC_TRC_END          0xff
 509         union {
 510                 struct ibmvfc_trace_start_entry start;
 511                 struct ibmvfc_trace_end_entry end;
 512         } u;
 513 }__attribute__((packed, aligned (8)));
 514
 515 enum ibmvfc_crq_formats {
 516         IBMVFC_CMD_FORMAT               = 0x01,
 517         IBMVFC_ASYNC_EVENT      = 0x02,
 518         IBMVFC_MAD_FORMAT               = 0x04,
 519 };
 520
 521 enum ibmvfc_async_event {
 522         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 523         IBMVFC_AE_ELS_LOGO              = 0x0002,
 524         IBMVFC_AE_ELS_PRLO              = 0x0004,
 525         IBMVFC_AE_SCN_NPORT             = 0x0008,
 526         IBMVFC_AE_SCN_GROUP             = 0x0010,
 527         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 528         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 529         IBMVFC_AE_LINK_UP                       = 0x0080,
 530         IBMVFC_AE_LINK_DOWN             = 0x0100,
 531         IBMVFC_AE_LINK_DEAD             = 0x0200,
 532         IBMVFC_AE_HALT                  = 0x0400,
 533         IBMVFC_AE_RESUME                        = 0x0800,
 534         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 535 };
 536
 537 struct ibmvfc_async_desc {
 538         const char *desc;
 539         enum ibmvfc_async_event ae;
 540         int log_level;
 541 };
 542
 543 struct ibmvfc_crq {
 544         volatile u8 valid;
 545         volatile u8 format;
 546         u8 reserved[6];
 547         volatile __be64 ioba;
 548 }__attribute__((packed, aligned (8)));
 549
 550 struct ibmvfc_crq_queue {
 551         struct ibmvfc_crq *msgs;
 552         int size, cur;
 553         dma_addr_t msg_token;
 554 };
 555
 556 enum ibmvfc_ae_link_state {
 557         IBMVFC_AE_LS_LINK_UP            = 0x01,
 558         IBMVFC_AE_LS_LINK_BOUNCED       = 0x02,
 559         IBMVFC_AE_LS_LINK_DOWN          = 0x04,
 560         IBMVFC_AE_LS_LINK_DEAD          = 0x08,
 561 };
 562
 563 struct ibmvfc_async_crq {
 564         volatile u8 valid;
 565         u8 link_state;
 566         u8 pad[2];
 567         __be32 pad2;
 568         volatile __be64 event;
 569         volatile __be64 scsi_id;
 570         volatile __be64 wwpn;
 571         volatile __be64 node_name;
 572         __be64 reserved;
 573 }__attribute__((packed, aligned (8)));
 574
 575 struct ibmvfc_async_crq_queue {
 576         struct ibmvfc_async_crq *msgs;
 577         int size, cur;
 578         dma_addr_t msg_token;
 579 };
 580
 581 union ibmvfc_iu {
 582         struct ibmvfc_mad_common mad_common;
 583         struct ibmvfc_npiv_login_mad npiv_login;
 584         struct ibmvfc_npiv_logout_mad npiv_logout;
 585         struct ibmvfc_discover_targets discover_targets;
 586         struct ibmvfc_port_login plogi;
 587         struct ibmvfc_process_login prli;
 588         struct ibmvfc_query_tgt query_tgt;
 589         struct ibmvfc_implicit_logout implicit_logout;
 590         struct ibmvfc_tmf tmf;
 591         struct ibmvfc_cmd cmd;
 592         struct ibmvfc_passthru_mad passthru;
 593 }__attribute__((packed, aligned (8)));
 594
 595 enum ibmvfc_target_action {
 596         IBMVFC_TGT_ACTION_NONE = 0,
 597         IBMVFC_TGT_ACTION_INIT,
 598         IBMVFC_TGT_ACTION_INIT_WAIT,
 599         IBMVFC_TGT_ACTION_DEL_RPORT,
 600         IBMVFC_TGT_ACTION_DELETED_RPORT,
 601 };
 602
 603 struct ibmvfc_target {
 604         struct list_head queue;
 605         struct ibmvfc_host *vhost;
 606         u64 scsi_id;
 607         u64 new_scsi_id;
 608         struct fc_rport *rport;
 609         int target_id;
 610         enum ibmvfc_target_action action;
 611         int need_login;
 612         int add_rport;
 613         int init_retries;
 614         int logo_rcvd;
 615         u32 cancel_key;
 616         struct ibmvfc_service_parms service_parms;
 617         struct ibmvfc_service_parms service_parms_change;
 618         struct fc_rport_identifiers ids;
 619         void (*job_step) (struct ibmvfc_target *);
 620         struct timer_list timer;
 621         struct kref kref;
 622 };
 623
 624 /* a unit of work for the hosting partition */
 625 struct ibmvfc_event {
 626         struct list_head queue;
 627         struct ibmvfc_host *vhost;
 628         struct ibmvfc_target *tgt;
 629         struct scsi_cmnd *cmnd;
 630         atomic_t free;
 631         union ibmvfc_iu *xfer_iu;
 632         void (*done) (struct ibmvfc_event *);
 633         struct ibmvfc_crq crq;
 634         union ibmvfc_iu iu;
 635         union ibmvfc_iu *sync_iu;
 636         struct srp_direct_buf *ext_list;
 637         dma_addr_t ext_list_token;
 638         struct completion comp;
 639         struct completion *eh_comp;
 640         struct timer_list timer;
 641 };
 642
 643 /* a pool of event structs for use */
 644 struct ibmvfc_event_pool {
 645         struct ibmvfc_event *events;
 646         u32 size;
 647         union ibmvfc_iu *iu_storage;
 648         dma_addr_t iu_token;
 649 };
 650
 651 enum ibmvfc_host_action {
 652         IBMVFC_HOST_ACTION_NONE = 0,
 653         IBMVFC_HOST_ACTION_RESET,
 654         IBMVFC_HOST_ACTION_REENABLE,
 655         IBMVFC_HOST_ACTION_LOGO,
 656         IBMVFC_HOST_ACTION_LOGO_WAIT,
 657         IBMVFC_HOST_ACTION_INIT,
 658         IBMVFC_HOST_ACTION_INIT_WAIT,
 659         IBMVFC_HOST_ACTION_QUERY,
 660         IBMVFC_HOST_ACTION_QUERY_TGTS,
 661         IBMVFC_HOST_ACTION_TGT_DEL,
 662         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 663         IBMVFC_HOST_ACTION_TGT_INIT,
 664         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 665 };
 666
 667 enum ibmvfc_host_state {
 668         IBMVFC_NO_CRQ = 0,
 669         IBMVFC_INITIALIZING,
 670         IBMVFC_ACTIVE,
 671         IBMVFC_HALTED,
 672         IBMVFC_LINK_DOWN,
 673         IBMVFC_LINK_DEAD,
 674         IBMVFC_HOST_OFFLINE,
 675 };
 676
 677 struct ibmvfc_host {
 678         char name[8];
 679         struct list_head queue;
 680         struct Scsi_Host *host;
 681         enum ibmvfc_host_state state;
 682         enum ibmvfc_host_action action;
 683 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 684 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 685 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 686         struct ibmvfc_trace_entry *trace;
 687         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 688         int num_targets;
 689         struct list_head targets;
 690         struct list_head sent;
 691         struct list_head free;
 692         struct device *dev;
 693         struct ibmvfc_event_pool pool;
 694         struct dma_pool *sg_pool;
 695         mempool_t *tgt_pool;
 696         struct ibmvfc_crq_queue crq;
 697         struct ibmvfc_async_crq_queue async_crq;
 698         struct ibmvfc_npiv_login login_info;
 699         union ibmvfc_npiv_login_data *login_buf;
 700         dma_addr_t login_buf_dma;
 701         int disc_buf_sz;
 702         int log_level;
 703         struct ibmvfc_discover_targets_buf *disc_buf;
 704         struct mutex passthru_mutex;
 705         int task_set;
 706         int init_retries;
 707         int discovery_threads;
 708         int abort_threads;
 709         int client_migrated;
 710         int reinit;
 711         int delay_init;
 712         int scan_complete;
 713         int logged_in;
 714         int aborting_passthru;
 715         int events_to_log;
 716 #define IBMVFC_AE_LINKUP        0x0001
 717 #define IBMVFC_AE_LINKDOWN      0x0002
 718 #define IBMVFC_AE_RSCN          0x0004
 719         dma_addr_t disc_buf_dma;
 720         unsigned int partition_number;
 721         char partition_name[97];
 722         void (*job_step) (struct ibmvfc_host *);
 723         struct task_struct *work_thread;
 724         struct tasklet_struct tasklet;
 725         struct work_struct rport_add_work_q;
 726         wait_queue_head_t init_wait_q;
 727         wait_queue_head_t work_wait_q;
 728 };
 729
 730 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 731
 732 #define tgt_dbg(t, fmt, ...)                    \
 733         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 734
 735 #define tgt_info(t, fmt, ...)           \
 736         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 737
 738 #define tgt_err(t, fmt, ...)            \
 739         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 740
 741 #define tgt_log(t, level, fmt, ...) \
 742         do { \
 743                 if ((t)->vhost->log_level >= level) \
 744                         tgt_err(t, fmt, ##__VA_ARGS__); \
 745         } while (0)
 746
 747 #define ibmvfc_dbg(vhost, ...) \
 748         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 749
 750 #define ibmvfc_log(vhost, level, ...) \
 751         do { \
 752                 if ((vhost)->log_level >= level) \
 753                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 754         } while (0)
 755
 756 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 757 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 758
 759 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 760 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 761 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 762 #else
 763 #define ibmvfc_create_trace_file(kobj, attr) 0
 764 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 765 #endif
 766
 767 #endif