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           "1.0.8"
  33 #define IBMVFC_DRIVER_DATE              "(June 17, 2010)"
  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_WAIT_TIMEOUT       40
  42 #define IBMVFC_MAX_REQUESTS_DEFAULT     100
  43
  44 #define IBMVFC_DEBUG                    0
  45 #define IBMVFC_MAX_TARGETS              1024
  46 #define IBMVFC_MAX_LUN                  0xffffffff
  47 #define IBMVFC_MAX_SECTORS              0xffffu
  48 #define IBMVFC_MAX_DISC_THREADS 4
  49 #define IBMVFC_TGT_MEMPOOL_SZ           64
  50 #define IBMVFC_MAX_CMDS_PER_LUN 64
  51 #define IBMVFC_MAX_HOST_INIT_RETRIES    6
  52 #define IBMVFC_MAX_TGT_INIT_RETRIES             3
  53 #define IBMVFC_DEV_LOSS_TMO             (5 * 60)
  54 #define IBMVFC_DEFAULT_LOG_LEVEL        2
  55 #define IBMVFC_MAX_CDB_LEN              16
  56
  57 /*
  58  * Ensure we have resources for ERP and initialization:
  59  * 1 for ERP
  60  * 1 for initialization
  61  * 1 for NPIV Logout
  62  * 2 for BSG passthru
  63  * 2 for each discovery thread
  64  */
  65 #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + 1 + 2 + (disc_threads * 2))
  66
  67 #define IBMVFC_MAD_SUCCESS              0x00
  68 #define IBMVFC_MAD_NOT_SUPPORTED        0xF1
  69 #define IBMVFC_MAD_FAILED               0xF7
  70 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  71 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  72
  73 enum ibmvfc_crq_valid {
  74         IBMVFC_CRQ_CMD_RSP              = 0x80,
  75         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  76         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  77 };
  78
  79 enum ibmvfc_crq_format {
  80         IBMVFC_CRQ_INIT                 = 0x01,
  81         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  82         IBMVFC_PARTITION_MIGRATED       = 0x06,
  83 };
  84
  85 enum ibmvfc_cmd_status_flags {
  86         IBMVFC_FABRIC_MAPPED            = 0x0001,
  87         IBMVFC_VIOS_FAILURE             = 0x0002,
  88         IBMVFC_FC_FAILURE                       = 0x0004,
  89         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  90         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  91         IBMVFC_VIOS_LOGGED              = 0x0020,
  92 };
  93
  94 enum ibmvfc_fabric_mapped_errors {
  95         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  96         IBMVFC_XPORT_FAULT              = 0x0002,
  97         IBMVFC_CMD_TIMEOUT              = 0x0003,
  98         IBMVFC_ENETDOWN                 = 0x0004,
  99         IBMVFC_HW_FAILURE                       = 0x0005,
 100         IBMVFC_LINK_DOWN_ERR            = 0x0006,
 101         IBMVFC_LINK_DEAD_ERR            = 0x0007,
 102         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
 103         IBMVFC_XPORT_BUSY                       = 0x000A,
 104         IBMVFC_XPORT_DEAD                       = 0x000B,
 105         IBMVFC_CONFIG_ERROR             = 0x000C,
 106         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 107         IBMVFC_LINK_HALTED              = 0x000E,
 108         IBMVFC_XPORT_GENERAL            = 0x8000,
 109 };
 110
 111 enum ibmvfc_vios_errors {
 112         IBMVFC_CRQ_FAILURE                      = 0x0001,
 113         IBMVFC_SW_FAILURE                               = 0x0002,
 114         IBMVFC_INVALID_PARAMETER                = 0x0003,
 115         IBMVFC_MISSING_PARAMETER                = 0x0004,
 116         IBMVFC_HOST_IO_BUS                      = 0x0005,
 117         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 118         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 119         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 120         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 121         IBMVFC_COMMAND_FAILED                   = 0x8000,
 122 };
 123
 124 enum ibmvfc_mad_types {
 125         IBMVFC_NPIV_LOGIN               = 0x0001,
 126         IBMVFC_DISC_TARGETS     = 0x0002,
 127         IBMVFC_PORT_LOGIN               = 0x0004,
 128         IBMVFC_PROCESS_LOGIN    = 0x0008,
 129         IBMVFC_QUERY_TARGET     = 0x0010,
 130         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 131         IBMVFC_PASSTHRU         = 0x0200,
 132         IBMVFC_TMF_MAD          = 0x0100,
 133         IBMVFC_NPIV_LOGOUT      = 0x0800,
 134 };
 135
 136 struct ibmvfc_mad_common {
 137         u32 version;
 138         u32 reserved;
 139         u32 opcode;
 140         u16 status;
 141         u16 length;
 142         u64 tag;
 143 }__attribute__((packed, aligned (8)));
 144
 145 struct ibmvfc_npiv_login_mad {
 146         struct ibmvfc_mad_common common;
 147         struct srp_direct_buf buffer;
 148 }__attribute__((packed, aligned (8)));
 149
 150 struct ibmvfc_npiv_logout_mad {
 151         struct ibmvfc_mad_common common;
 152 }__attribute__((packed, aligned (8)));
 153
 154 #define IBMVFC_MAX_NAME 256
 155
 156 struct ibmvfc_npiv_login {
 157         u32 ostype;
 158 #define IBMVFC_OS_LINUX 0x02
 159         u32 pad;
 160         u64 max_dma_len;
 161         u32 max_payload;
 162         u32 max_response;
 163         u32 partition_num;
 164         u32 vfc_frame_version;
 165         u16 fcp_version;
 166         u16 flags;
 167 #define IBMVFC_CLIENT_MIGRATED  0x01
 168 #define IBMVFC_FLUSH_ON_HALT            0x02
 169         u32 max_cmds;
 170         u64 capabilities;
 171 #define IBMVFC_CAN_MIGRATE              0x01
 172         u64 node_name;
 173         struct srp_direct_buf async;
 174         u8 partition_name[IBMVFC_MAX_NAME];
 175         u8 device_name[IBMVFC_MAX_NAME];
 176         u8 drc_name[IBMVFC_MAX_NAME];
 177         u64 reserved2[2];
 178 }__attribute__((packed, aligned (8)));
 179
 180 struct ibmvfc_common_svc_parms {
 181         u16 fcph_version;
 182         u16 b2b_credit;
 183         u16 features;
 184         u16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 185         u32 ratov;
 186         u32 edtov;
 187 }__attribute__((packed, aligned (4)));
 188
 189 struct ibmvfc_service_parms {
 190         struct ibmvfc_common_svc_parms common;
 191         u8 port_name[8];
 192         u8 node_name[8];
 193         u32 class1_parms[4];
 194         u32 class2_parms[4];
 195         u32 class3_parms[4];
 196         u32 obsolete[4];
 197         u32 vendor_version[4];
 198         u32 services_avail[2];
 199         u32 ext_len;
 200         u32 reserved[30];
 201         u32 clk_sync_qos[2];
 202 }__attribute__((packed, aligned (4)));
 203
 204 struct ibmvfc_npiv_login_resp {
 205         u32 version;
 206         u16 status;
 207         u16 error;
 208         u32 flags;
 209 #define IBMVFC_NATIVE_FC                0x01
 210 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 211         u32 reserved;
 212         u64 capabilities;
 213 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 214         u32 max_cmds;
 215         u32 scsi_id_sz;
 216         u64 max_dma_len;
 217         u64 scsi_id;
 218         u64 port_name;
 219         u64 node_name;
 220         u64 link_speed;
 221         u8 partition_name[IBMVFC_MAX_NAME];
 222         u8 device_name[IBMVFC_MAX_NAME];
 223         u8 port_loc_code[IBMVFC_MAX_NAME];
 224         u8 drc_name[IBMVFC_MAX_NAME];
 225         struct ibmvfc_service_parms service_parms;
 226         u64 reserved2;
 227 }__attribute__((packed, aligned (8)));
 228
 229 union ibmvfc_npiv_login_data {
 230         struct ibmvfc_npiv_login login;
 231         struct ibmvfc_npiv_login_resp resp;
 232 }__attribute__((packed, aligned (8)));
 233
 234 struct ibmvfc_discover_targets_buf {
 235         u32 scsi_id[1];
 236 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 237 };
 238
 239 struct ibmvfc_discover_targets {
 240         struct ibmvfc_mad_common common;
 241         struct srp_direct_buf buffer;
 242         u32 flags;
 243         u16 status;
 244         u16 error;
 245         u32 bufflen;
 246         u32 num_avail;
 247         u32 num_written;
 248         u64 reserved[2];
 249 }__attribute__((packed, aligned (8)));
 250
 251 enum ibmvfc_fc_reason {
 252         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 253         IBMVFC_INVALID_VERSION          = 0x02,
 254         IBMVFC_LOGICAL_ERROR            = 0x03,
 255         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 256         IBMVFC_LOGICAL_BUSY             = 0x05,
 257         IBMVFC_PROTOCOL_ERROR           = 0x07,
 258         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 259         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 260         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 261         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 262         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 263 };
 264
 265 enum ibmvfc_fc_type {
 266         IBMVFC_FABRIC_REJECT    = 0x01,
 267         IBMVFC_PORT_REJECT      = 0x02,
 268         IBMVFC_LS_REJECT                = 0x03,
 269         IBMVFC_FABRIC_BUSY      = 0x04,
 270         IBMVFC_PORT_BUSY                = 0x05,
 271         IBMVFC_BASIC_REJECT     = 0x06,
 272 };
 273
 274 enum ibmvfc_gs_explain {
 275         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 276 };
 277
 278 struct ibmvfc_port_login {
 279         struct ibmvfc_mad_common common;
 280         u64 scsi_id;
 281         u16 reserved;
 282         u16 fc_service_class;
 283         u32 blksz;
 284         u32 hdr_per_blk;
 285         u16 status;
 286         u16 error;              /* also fc_reason */
 287         u16 fc_explain;
 288         u16 fc_type;
 289         u32 reserved2;
 290         struct ibmvfc_service_parms service_parms;
 291         struct ibmvfc_service_parms service_parms_change;
 292         u64 reserved3[2];
 293 }__attribute__((packed, aligned (8)));
 294
 295 struct ibmvfc_prli_svc_parms {
 296         u8 type;
 297 #define IBMVFC_SCSI_FCP_TYPE            0x08
 298         u8 type_ext;
 299         u16 flags;
 300 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 301 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 302 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 303         u32 orig_pa;
 304         u32 resp_pa;
 305         u32 service_parms;
 306 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 307 #define IBMVFC_PRLI_RETRY                               0x00000100
 308 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 309 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 310 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 311 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 312 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 313 }__attribute__((packed, aligned (4)));
 314
 315 struct ibmvfc_process_login {
 316         struct ibmvfc_mad_common common;
 317         u64 scsi_id;
 318         struct ibmvfc_prli_svc_parms parms;
 319         u8 reserved[48];
 320         u16 status;
 321         u16 error;                      /* also fc_reason */
 322         u32 reserved2;
 323         u64 reserved3[2];
 324 }__attribute__((packed, aligned (8)));
 325
 326 struct ibmvfc_query_tgt {
 327         struct ibmvfc_mad_common common;
 328         u64 wwpn;
 329         u64 scsi_id;
 330         u16 status;
 331         u16 error;
 332         u16 fc_explain;
 333         u16 fc_type;
 334         u64 reserved[2];
 335 }__attribute__((packed, aligned (8)));
 336
 337 struct ibmvfc_implicit_logout {
 338         struct ibmvfc_mad_common common;
 339         u64 old_scsi_id;
 340         u64 reserved[2];
 341 }__attribute__((packed, aligned (8)));
 342
 343 struct ibmvfc_tmf {
 344         struct ibmvfc_mad_common common;
 345         u64 scsi_id;
 346         struct scsi_lun lun;
 347         u32 flags;
 348 #define IBMVFC_TMF_ABORT_TASK           0x02
 349 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 350 #define IBMVFC_TMF_LUN_RESET            0x10
 351 #define IBMVFC_TMF_TGT_RESET            0x20
 352 #define IBMVFC_TMF_LUA_VALID            0x40
 353         u32 cancel_key;
 354         u32 my_cancel_key;
 355         u32 pad;
 356         u64 reserved[2];
 357 }__attribute__((packed, aligned (8)));
 358
 359 enum ibmvfc_fcp_rsp_info_codes {
 360         RSP_NO_FAILURE          = 0x00,
 361         RSP_TMF_REJECTED                = 0x04,
 362         RSP_TMF_FAILED          = 0x05,
 363         RSP_TMF_INVALID_LUN     = 0x09,
 364 };
 365
 366 struct ibmvfc_fcp_rsp_info {
 367         u16 reserved;
 368         u8 rsp_code;
 369         u8 reserved2[4];
 370 }__attribute__((packed, aligned (2)));
 371
 372 enum ibmvfc_fcp_rsp_flags {
 373         FCP_BIDI_RSP                    = 0x80,
 374         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 375         FCP_BIDI_READ_RESID_OVER        = 0x20,
 376         FCP_CONF_REQ                    = 0x10,
 377         FCP_RESID_UNDER                 = 0x08,
 378         FCP_RESID_OVER                  = 0x04,
 379         FCP_SNS_LEN_VALID                       = 0x02,
 380         FCP_RSP_LEN_VALID                       = 0x01,
 381 };
 382
 383 union ibmvfc_fcp_rsp_data {
 384         struct ibmvfc_fcp_rsp_info info;
 385         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 386 }__attribute__((packed, aligned (8)));
 387
 388 struct ibmvfc_fcp_rsp {
 389         u64 reserved;
 390         u16 retry_delay_timer;
 391         u8 flags;
 392         u8 scsi_status;
 393         u32 fcp_resid;
 394         u32 fcp_sense_len;
 395         u32 fcp_rsp_len;
 396         union ibmvfc_fcp_rsp_data data;
 397 }__attribute__((packed, aligned (8)));
 398
 399 enum ibmvfc_cmd_flags {
 400         IBMVFC_SCATTERLIST      = 0x0001,
 401         IBMVFC_NO_MEM_DESC      = 0x0002,
 402         IBMVFC_READ                     = 0x0004,
 403         IBMVFC_WRITE            = 0x0008,
 404         IBMVFC_TMF                      = 0x0080,
 405         IBMVFC_CLASS_3_ERR      = 0x0100,
 406 };
 407
 408 enum ibmvfc_fc_task_attr {
 409         IBMVFC_SIMPLE_TASK      = 0x00,
 410         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 411         IBMVFC_ORDERED_TASK     = 0x02,
 412         IBMVFC_ACA_TASK         = 0x04,
 413 };
 414
 415 enum ibmvfc_fc_tmf_flags {
 416         IBMVFC_ABORT_TASK_SET   = 0x02,
 417         IBMVFC_LUN_RESET                = 0x10,
 418         IBMVFC_TARGET_RESET     = 0x20,
 419 };
 420
 421 struct ibmvfc_fcp_cmd_iu {
 422         struct scsi_lun lun;
 423         u8 crn;
 424         u8 pri_task_attr;
 425         u8 tmf_flags;
 426         u8 add_cdb_len;
 427 #define IBMVFC_RDDATA           0x02
 428 #define IBMVFC_WRDATA           0x01
 429         u8 cdb[IBMVFC_MAX_CDB_LEN];
 430         u32 xfer_len;
 431 }__attribute__((packed, aligned (4)));
 432
 433 struct ibmvfc_cmd {
 434         u64 task_tag;
 435         u32 frame_type;
 436         u32 payload_len;
 437         u32 resp_len;
 438         u32 adapter_resid;
 439         u16 status;
 440         u16 error;
 441         u16 flags;
 442         u16 response_flags;
 443 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 444         u32 cancel_key;
 445         u32 exchange_id;
 446         struct srp_direct_buf ext_func;
 447         struct srp_direct_buf ioba;
 448         struct srp_direct_buf resp;
 449         u64 correlation;
 450         u64 tgt_scsi_id;
 451         u64 tag;
 452         u64 reserved3[2];
 453         struct ibmvfc_fcp_cmd_iu iu;
 454         struct ibmvfc_fcp_rsp rsp;
 455 }__attribute__((packed, aligned (8)));
 456
 457 struct ibmvfc_passthru_fc_iu {
 458         u32 payload[7];
 459 #define IBMVFC_ADISC    0x52000000
 460         u32 response[7];
 461 };
 462
 463 struct ibmvfc_passthru_iu {
 464         u64 task_tag;
 465         u32 cmd_len;
 466         u32 rsp_len;
 467         u16 status;
 468         u16 error;
 469         u32 flags;
 470 #define IBMVFC_FC_ELS           0x01
 471 #define IBMVFC_FC_CT_IU         0x02
 472         u32 cancel_key;
 473 #define IBMVFC_PASSTHRU_CANCEL_KEY      0x80000000
 474 #define IBMVFC_INTERNAL_CANCEL_KEY      0x80000001
 475         u32 reserved;
 476         struct srp_direct_buf cmd;
 477         struct srp_direct_buf rsp;
 478         u64 correlation;
 479         u64 scsi_id;
 480         u64 tag;
 481         u64 reserved2[2];
 482 }__attribute__((packed, aligned (8)));
 483
 484 struct ibmvfc_passthru_mad {
 485         struct ibmvfc_mad_common common;
 486         struct srp_direct_buf cmd_ioba;
 487         struct ibmvfc_passthru_iu iu;
 488         struct ibmvfc_passthru_fc_iu fc_iu;
 489 }__attribute__((packed, aligned (8)));
 490
 491 struct ibmvfc_trace_start_entry {
 492         u32 xfer_len;
 493 }__attribute__((packed));
 494
 495 struct ibmvfc_trace_end_entry {
 496         u16 status;
 497         u16 error;
 498         u8 fcp_rsp_flags;
 499         u8 rsp_code;
 500         u8 scsi_status;
 501         u8 reserved;
 502 }__attribute__((packed));
 503
 504 struct ibmvfc_trace_entry {
 505         struct ibmvfc_event *evt;
 506         u32 time;
 507         u32 scsi_id;
 508         u32 lun;
 509         u8 fmt;
 510         u8 op_code;
 511         u8 tmf_flags;
 512         u8 type;
 513 #define IBMVFC_TRC_START        0x00
 514 #define IBMVFC_TRC_END          0xff
 515         union {
 516                 struct ibmvfc_trace_start_entry start;
 517                 struct ibmvfc_trace_end_entry end;
 518         } u;
 519 }__attribute__((packed, aligned (8)));
 520
 521 enum ibmvfc_crq_formats {
 522         IBMVFC_CMD_FORMAT               = 0x01,
 523         IBMVFC_ASYNC_EVENT      = 0x02,
 524         IBMVFC_MAD_FORMAT               = 0x04,
 525 };
 526
 527 enum ibmvfc_async_event {
 528         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 529         IBMVFC_AE_ELS_LOGO              = 0x0002,
 530         IBMVFC_AE_ELS_PRLO              = 0x0004,
 531         IBMVFC_AE_SCN_NPORT             = 0x0008,
 532         IBMVFC_AE_SCN_GROUP             = 0x0010,
 533         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 534         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 535         IBMVFC_AE_LINK_UP                       = 0x0080,
 536         IBMVFC_AE_LINK_DOWN             = 0x0100,
 537         IBMVFC_AE_LINK_DEAD             = 0x0200,
 538         IBMVFC_AE_HALT                  = 0x0400,
 539         IBMVFC_AE_RESUME                        = 0x0800,
 540         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 541 };
 542
 543 struct ibmvfc_crq {
 544         volatile u8 valid;
 545         volatile u8 format;
 546         u8 reserved[6];
 547         volatile u64 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         u32 pad2;
 568         volatile u64 event;
 569         volatile u64 scsi_id;
 570         volatile u64 wwpn;
 571         volatile u64 node_name;
 572         u64 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 };
 601
 602 struct ibmvfc_target {
 603         struct list_head queue;
 604         struct ibmvfc_host *vhost;
 605         u64 scsi_id;
 606         u64 new_scsi_id;
 607         struct fc_rport *rport;
 608         int target_id;
 609         enum ibmvfc_target_action action;
 610         int need_login;
 611         int add_rport;
 612         int init_retries;
 613         int logo_rcvd;
 614         u32 cancel_key;
 615         struct ibmvfc_service_parms service_parms;
 616         struct ibmvfc_service_parms service_parms_change;
 617         struct fc_rport_identifiers ids;
 618         void (*job_step) (struct ibmvfc_target *);
 619         struct timer_list timer;
 620         struct kref kref;
 621 };
 622
 623 /* a unit of work for the hosting partition */
 624 struct ibmvfc_event {
 625         struct list_head queue;
 626         struct ibmvfc_host *vhost;
 627         struct ibmvfc_target *tgt;
 628         struct scsi_cmnd *cmnd;
 629         atomic_t free;
 630         union ibmvfc_iu *xfer_iu;
 631         void (*done) (struct ibmvfc_event *);
 632         struct ibmvfc_crq crq;
 633         union ibmvfc_iu iu;
 634         union ibmvfc_iu *sync_iu;
 635         struct srp_direct_buf *ext_list;
 636         dma_addr_t ext_list_token;
 637         struct completion comp;
 638         struct completion *eh_comp;
 639         struct timer_list timer;
 640 };
 641
 642 /* a pool of event structs for use */
 643 struct ibmvfc_event_pool {
 644         struct ibmvfc_event *events;
 645         u32 size;
 646         union ibmvfc_iu *iu_storage;
 647         dma_addr_t iu_token;
 648 };
 649
 650 enum ibmvfc_host_action {
 651         IBMVFC_HOST_ACTION_NONE = 0,
 652         IBMVFC_HOST_ACTION_RESET,
 653         IBMVFC_HOST_ACTION_REENABLE,
 654         IBMVFC_HOST_ACTION_LOGO,
 655         IBMVFC_HOST_ACTION_LOGO_WAIT,
 656         IBMVFC_HOST_ACTION_INIT,
 657         IBMVFC_HOST_ACTION_INIT_WAIT,
 658         IBMVFC_HOST_ACTION_QUERY,
 659         IBMVFC_HOST_ACTION_QUERY_TGTS,
 660         IBMVFC_HOST_ACTION_TGT_DEL,
 661         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 662         IBMVFC_HOST_ACTION_TGT_INIT,
 663         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 664 };
 665
 666 enum ibmvfc_host_state {
 667         IBMVFC_NO_CRQ = 0,
 668         IBMVFC_INITIALIZING,
 669         IBMVFC_ACTIVE,
 670         IBMVFC_HALTED,
 671         IBMVFC_LINK_DOWN,
 672         IBMVFC_LINK_DEAD,
 673         IBMVFC_HOST_OFFLINE,
 674 };
 675
 676 struct ibmvfc_host {
 677         char name[8];
 678         struct list_head queue;
 679         struct Scsi_Host *host;
 680         enum ibmvfc_host_state state;
 681         enum ibmvfc_host_action action;
 682 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 683 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 684 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 685         struct ibmvfc_trace_entry *trace;
 686         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 687         int num_targets;
 688         struct list_head targets;
 689         struct list_head sent;
 690         struct list_head free;
 691         struct device *dev;
 692         struct ibmvfc_event_pool pool;
 693         struct dma_pool *sg_pool;
 694         mempool_t *tgt_pool;
 695         struct ibmvfc_crq_queue crq;
 696         struct ibmvfc_async_crq_queue async_crq;
 697         struct ibmvfc_npiv_login login_info;
 698         union ibmvfc_npiv_login_data *login_buf;
 699         dma_addr_t login_buf_dma;
 700         int disc_buf_sz;
 701         int log_level;
 702         struct ibmvfc_discover_targets_buf *disc_buf;
 703         struct mutex passthru_mutex;
 704         int task_set;
 705         int init_retries;
 706         int discovery_threads;
 707         int abort_threads;
 708         int client_migrated;
 709         int reinit;
 710         int delay_init;
 711         int scan_complete;
 712         int logged_in;
 713         int aborting_passthru;
 714         int events_to_log;
 715 #define IBMVFC_AE_LINKUP        0x0001
 716 #define IBMVFC_AE_LINKDOWN      0x0002
 717 #define IBMVFC_AE_RSCN          0x0004
 718         dma_addr_t disc_buf_dma;
 719         unsigned int partition_number;
 720         char partition_name[97];
 721         void (*job_step) (struct ibmvfc_host *);
 722         struct task_struct *work_thread;
 723         struct tasklet_struct tasklet;
 724         struct work_struct rport_add_work_q;
 725         wait_queue_head_t init_wait_q;
 726         wait_queue_head_t work_wait_q;
 727 };
 728
 729 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 730
 731 #define tgt_dbg(t, fmt, ...)                    \
 732         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 733
 734 #define tgt_info(t, fmt, ...)           \
 735         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 736
 737 #define tgt_err(t, fmt, ...)            \
 738         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 739
 740 #define tgt_log(t, level, fmt, ...) \
 741         do { \
 742                 if ((t)->vhost->log_level >= level) \
 743                         tgt_err(t, fmt, ##__VA_ARGS__); \
 744         } while (0)
 745
 746 #define ibmvfc_dbg(vhost, ...) \
 747         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 748
 749 #define ibmvfc_log(vhost, level, ...) \
 750         do { \
 751                 if ((vhost)->log_level >= level) \
 752                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 753         } while (0)
 754
 755 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 756 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 757
 758 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 759 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 760 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 761 #else
 762 #define ibmvfc_create_trace_file(kobj, attr) 0
 763 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 764 #endif
 765
 766 #endif