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_VERSION_NOT_SUPP     0xF2
  58 #define IBMVFC_MAD_FAILED               0xF7
  59 #define IBMVFC_MAD_DRIVER_FAILED        0xEE
  60 #define IBMVFC_MAD_CRQ_ERROR            0xEF
  61
  62 enum ibmvfc_crq_valid {
  63         IBMVFC_CRQ_CMD_RSP              = 0x80,
  64         IBMVFC_CRQ_INIT_RSP             = 0xC0,
  65         IBMVFC_CRQ_XPORT_EVENT          = 0xFF,
  66 };
  67
  68 enum ibmvfc_crq_init_msg {
  69         IBMVFC_CRQ_INIT                 = 0x01,
  70         IBMVFC_CRQ_INIT_COMPLETE        = 0x02,
  71 };
  72
  73 enum ibmvfc_crq_xport_evts {
  74         IBMVFC_PARTNER_FAILED           = 0x01,
  75         IBMVFC_PARTNER_DEREGISTER       = 0x02,
  76         IBMVFC_PARTITION_MIGRATED       = 0x06,
  77 };
  78
  79 enum ibmvfc_cmd_status_flags {
  80         IBMVFC_FABRIC_MAPPED            = 0x0001,
  81         IBMVFC_VIOS_FAILURE             = 0x0002,
  82         IBMVFC_FC_FAILURE                       = 0x0004,
  83         IBMVFC_FC_SCSI_ERROR            = 0x0008,
  84         IBMVFC_HW_EVENT_LOGGED          = 0x0010,
  85         IBMVFC_VIOS_LOGGED              = 0x0020,
  86 };
  87
  88 enum ibmvfc_fabric_mapped_errors {
  89         IBMVFC_UNABLE_TO_ESTABLISH      = 0x0001,
  90         IBMVFC_XPORT_FAULT              = 0x0002,
  91         IBMVFC_CMD_TIMEOUT              = 0x0003,
  92         IBMVFC_ENETDOWN                 = 0x0004,
  93         IBMVFC_HW_FAILURE                       = 0x0005,
  94         IBMVFC_LINK_DOWN_ERR            = 0x0006,
  95         IBMVFC_LINK_DEAD_ERR            = 0x0007,
  96         IBMVFC_UNABLE_TO_REGISTER       = 0x0008,
  97         IBMVFC_XPORT_BUSY                       = 0x000A,
  98         IBMVFC_XPORT_DEAD                       = 0x000B,
  99         IBMVFC_CONFIG_ERROR             = 0x000C,
 100         IBMVFC_NAME_SERVER_FAIL         = 0x000D,
 101         IBMVFC_LINK_HALTED              = 0x000E,
 102         IBMVFC_XPORT_GENERAL            = 0x8000,
 103 };
 104
 105 enum ibmvfc_vios_errors {
 106         IBMVFC_CRQ_FAILURE                      = 0x0001,
 107         IBMVFC_SW_FAILURE                               = 0x0002,
 108         IBMVFC_INVALID_PARAMETER                = 0x0003,
 109         IBMVFC_MISSING_PARAMETER                = 0x0004,
 110         IBMVFC_HOST_IO_BUS                      = 0x0005,
 111         IBMVFC_TRANS_CANCELLED                  = 0x0006,
 112         IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007,
 113         IBMVFC_INSUFFICIENT_RESOURCE            = 0x0008,
 114         IBMVFC_PLOGI_REQUIRED                   = 0x0010,
 115         IBMVFC_COMMAND_FAILED                   = 0x8000,
 116 };
 117
 118 enum ibmvfc_mad_types {
 119         IBMVFC_NPIV_LOGIN               = 0x0001,
 120         IBMVFC_DISC_TARGETS     = 0x0002,
 121         IBMVFC_PORT_LOGIN               = 0x0004,
 122         IBMVFC_PROCESS_LOGIN    = 0x0008,
 123         IBMVFC_QUERY_TARGET     = 0x0010,
 124         IBMVFC_MOVE_LOGIN               = 0x0020,
 125         IBMVFC_IMPLICIT_LOGOUT  = 0x0040,
 126         IBMVFC_PASSTHRU         = 0x0200,
 127         IBMVFC_TMF_MAD          = 0x0100,
 128         IBMVFC_NPIV_LOGOUT      = 0x0800,
 129         IBMVFC_CHANNEL_ENQUIRY  = 0x1000,
 130         IBMVFC_CHANNEL_SETUP    = 0x2000,
 131         IBMVFC_CONNECTION_INFO  = 0x4000,
 132 };
 133
 134 struct ibmvfc_mad_common {
 135         __be32 version;
 136         __be32 reserved;
 137         __be32 opcode;
 138         __be16 status;
 139         __be16 length;
 140         __be64 tag;
 141 } __packed __aligned(8);
 142
 143 struct ibmvfc_npiv_login_mad {
 144         struct ibmvfc_mad_common common;
 145         struct srp_direct_buf buffer;
 146 } __packed __aligned(8);
 147
 148 struct ibmvfc_npiv_logout_mad {
 149         struct ibmvfc_mad_common common;
 150 } __packed __aligned(8);
 151
 152 #define IBMVFC_MAX_NAME 256
 153
 154 struct ibmvfc_npiv_login {
 155         __be32 ostype;
 156 #define IBMVFC_OS_LINUX 0x02
 157         __be32 pad;
 158         __be64 max_dma_len;
 159         __be32 max_payload;
 160         __be32 max_response;
 161         __be32 partition_num;
 162         __be32 vfc_frame_version;
 163         __be16 fcp_version;
 164         __be16 flags;
 165 #define IBMVFC_CLIENT_MIGRATED  0x01
 166 #define IBMVFC_FLUSH_ON_HALT            0x02
 167         __be32 max_cmds;
 168         __be64 capabilities;
 169 #define IBMVFC_CAN_MIGRATE              0x01
 170 #define IBMVFC_CAN_USE_CHANNELS         0x02
 171 #define IBMVFC_CAN_HANDLE_FPIN          0x04
 172 #define IBMVFC_CAN_USE_MAD_VERSION      0x08
 173 #define IBMVFC_CAN_SEND_VF_WWPN         0x10
 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 } __packed __aligned(8);
 181
 182 struct ibmvfc_common_svc_parms {
 183         __be16 fcph_version;
 184         __be16 b2b_credit;
 185         __be16 features;
 186         __be16 bb_rcv_sz; /* upper nibble is BB_SC_N */
 187         __be32 ratov;
 188         __be32 edtov;
 189 } __packed __aligned(4);
 190
 191 struct ibmvfc_service_parms {
 192         struct ibmvfc_common_svc_parms common;
 193         u8 port_name[8];
 194         u8 node_name[8];
 195         __be32 class1_parms[4];
 196         __be32 class2_parms[4];
 197         __be32 class3_parms[4];
 198         __be32 obsolete[4];
 199         __be32 vendor_version[4];
 200         __be32 services_avail[2];
 201         __be32 ext_len;
 202         __be32 reserved[30];
 203         __be32 clk_sync_qos[2];
 204         __be32 reserved2;
 205 } __packed __aligned(4);
 206
 207 struct ibmvfc_npiv_login_resp {
 208         __be32 version;
 209         __be16 status;
 210         __be16 error;
 211         __be32 flags;
 212 #define IBMVFC_NATIVE_FC                0x01
 213         __be32 reserved;
 214         __be64 capabilities;
 215 #define IBMVFC_CAN_FLUSH_ON_HALT        0x08
 216 #define IBMVFC_CAN_SUPPRESS_ABTS        0x10
 217 #define IBMVFC_MAD_VERSION_CAP          0x20
 218 #define IBMVFC_HANDLE_VF_WWPN           0x40
 219 #define IBMVFC_CAN_SUPPORT_CHANNELS     0x80
 220         __be32 max_cmds;
 221         __be32 scsi_id_sz;
 222         __be64 max_dma_len;
 223         __be64 scsi_id;
 224         __be64 port_name;
 225         __be64 node_name;
 226         __be64 link_speed;
 227         u8 partition_name[IBMVFC_MAX_NAME];
 228         u8 device_name[IBMVFC_MAX_NAME];
 229         u8 port_loc_code[IBMVFC_MAX_NAME];
 230         u8 drc_name[IBMVFC_MAX_NAME];
 231         struct ibmvfc_service_parms service_parms;
 232         __be64 reserved2;
 233 } __packed __aligned(8);
 234
 235 union ibmvfc_npiv_login_data {
 236         struct ibmvfc_npiv_login login;
 237         struct ibmvfc_npiv_login_resp resp;
 238 } __packed __aligned(8);
 239
 240 struct ibmvfc_discover_targets_entry {
 241         __be32 scsi_id;
 242         __be32 pad;
 243         __be64 wwpn;
 244 #define IBMVFC_DISC_TGT_SCSI_ID_MASK    0x00ffffff
 245 } __packed __aligned(8);
 246
 247 struct ibmvfc_discover_targets {
 248         struct ibmvfc_mad_common common;
 249         struct srp_direct_buf buffer;
 250         __be32 flags;
 251 #define IBMVFC_DISC_TGT_PORT_ID_WWPN_LIST       0x02
 252         __be16 status;
 253         __be16 error;
 254         __be32 bufflen;
 255         __be32 num_avail;
 256         __be32 num_written;
 257         __be64 reserved[2];
 258 } __packed __aligned(8);
 259
 260 enum ibmvfc_fc_reason {
 261         IBMVFC_INVALID_ELS_CMD_CODE     = 0x01,
 262         IBMVFC_INVALID_VERSION          = 0x02,
 263         IBMVFC_LOGICAL_ERROR            = 0x03,
 264         IBMVFC_INVALID_CT_IU_SIZE       = 0x04,
 265         IBMVFC_LOGICAL_BUSY             = 0x05,
 266         IBMVFC_PROTOCOL_ERROR           = 0x07,
 267         IBMVFC_UNABLE_TO_PERFORM_REQ    = 0x09,
 268         IBMVFC_CMD_NOT_SUPPORTED        = 0x0B,
 269         IBMVFC_SERVER_NOT_AVAIL         = 0x0D,
 270         IBMVFC_CMD_IN_PROGRESS          = 0x0E,
 271         IBMVFC_VENDOR_SPECIFIC          = 0xFF,
 272 };
 273
 274 enum ibmvfc_fc_type {
 275         IBMVFC_FABRIC_REJECT    = 0x01,
 276         IBMVFC_PORT_REJECT      = 0x02,
 277         IBMVFC_LS_REJECT                = 0x03,
 278         IBMVFC_FABRIC_BUSY      = 0x04,
 279         IBMVFC_PORT_BUSY                = 0x05,
 280         IBMVFC_BASIC_REJECT     = 0x06,
 281 };
 282
 283 enum ibmvfc_gs_explain {
 284         IBMVFC_PORT_NAME_NOT_REG        = 0x02,
 285 };
 286
 287 struct ibmvfc_port_login {
 288         struct ibmvfc_mad_common common;
 289         __be64 scsi_id;
 290         __be16 reserved;
 291         __be16 fc_service_class;
 292         __be32 blksz;
 293         __be32 hdr_per_blk;
 294         __be16 status;
 295         __be16 error;           /* also fc_reason */
 296         __be16 fc_explain;
 297         __be16 fc_type;
 298         __be32 reserved2;
 299         struct ibmvfc_service_parms service_parms;
 300         struct ibmvfc_service_parms service_parms_change;
 301         __be64 target_wwpn;
 302         __be64 reserved3[2];
 303 } __packed __aligned(8);
 304
 305 struct ibmvfc_move_login {
 306         struct ibmvfc_mad_common common;
 307         __be64 old_scsi_id;
 308         __be64 new_scsi_id;
 309         __be64 wwpn;
 310         __be64 node_name;
 311         __be32 flags;
 312 #define IBMVFC_MOVE_LOGIN_IMPLICIT_OLD_FAILED   0x01
 313 #define IBMVFC_MOVE_LOGIN_IMPLICIT_NEW_FAILED   0x02
 314 #define IBMVFC_MOVE_LOGIN_PORT_LOGIN_FAILED     0x04
 315         __be32 reserved;
 316         struct ibmvfc_service_parms service_parms;
 317         struct ibmvfc_service_parms service_parms_change;
 318         __be32 reserved2;
 319         __be16 service_class;
 320         __be16 vios_flags;
 321 #define IBMVFC_MOVE_LOGIN_VF_NOT_SENT_ADAPTER   0x01
 322         __be64 reserved3;
 323 } __packed __aligned(8);
 324
 325 struct ibmvfc_prli_svc_parms {
 326         u8 type;
 327 #define IBMVFC_SCSI_FCP_TYPE            0x08
 328         u8 type_ext;
 329         __be16 flags;
 330 #define IBMVFC_PRLI_ORIG_PA_VALID                       0x8000
 331 #define IBMVFC_PRLI_RESP_PA_VALID                       0x4000
 332 #define IBMVFC_PRLI_EST_IMG_PAIR                        0x2000
 333         __be32 orig_pa;
 334         __be32 resp_pa;
 335         __be32 service_parms;
 336 #define IBMVFC_PRLI_TASK_RETRY                  0x00000200
 337 #define IBMVFC_PRLI_RETRY                               0x00000100
 338 #define IBMVFC_PRLI_DATA_OVERLAY                        0x00000040
 339 #define IBMVFC_PRLI_INITIATOR_FUNC                      0x00000020
 340 #define IBMVFC_PRLI_TARGET_FUNC                 0x00000010
 341 #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED  0x00000002
 342 #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED    0x00000001
 343 } __packed __aligned(4);
 344
 345 struct ibmvfc_process_login {
 346         struct ibmvfc_mad_common common;
 347         __be64 scsi_id;
 348         struct ibmvfc_prli_svc_parms parms;
 349         u8 reserved[48];
 350         __be16 status;
 351         __be16 error;                   /* also fc_reason */
 352         __be32 reserved2;
 353         __be64 target_wwpn;
 354         __be64 reserved3[2];
 355 } __packed __aligned(8);
 356
 357 struct ibmvfc_query_tgt {
 358         struct ibmvfc_mad_common common;
 359         __be64 wwpn;
 360         __be64 scsi_id;
 361         __be16 status;
 362         __be16 error;
 363         __be16 fc_explain;
 364         __be16 fc_type;
 365         __be64 reserved[2];
 366 } __packed __aligned(8);
 367
 368 struct ibmvfc_implicit_logout {
 369         struct ibmvfc_mad_common common;
 370         __be64 old_scsi_id;
 371         __be64 reserved[2];
 372 } __packed __aligned(8);
 373
 374 struct ibmvfc_tmf {
 375         struct ibmvfc_mad_common common;
 376         __be64 scsi_id;
 377         struct scsi_lun lun;
 378         __be32 flags;
 379 #define IBMVFC_TMF_ABORT_TASK           0x02
 380 #define IBMVFC_TMF_ABORT_TASK_SET       0x04
 381 #define IBMVFC_TMF_LUN_RESET            0x10
 382 #define IBMVFC_TMF_TGT_RESET            0x20
 383 #define IBMVFC_TMF_LUA_VALID            0x40
 384 #define IBMVFC_TMF_SUPPRESS_ABTS        0x80
 385         __be32 cancel_key;
 386         __be32 my_cancel_key;
 387         __be32 pad;
 388         __be64 target_wwpn;
 389         __be64 task_tag;
 390         __be64 reserved[2];
 391 } __packed __aligned(8);
 392
 393 enum ibmvfc_fcp_rsp_info_codes {
 394         RSP_NO_FAILURE          = 0x00,
 395         RSP_TMF_REJECTED                = 0x04,
 396         RSP_TMF_FAILED          = 0x05,
 397         RSP_TMF_INVALID_LUN     = 0x09,
 398 };
 399
 400 struct ibmvfc_fcp_rsp_info {
 401         u8 reserved[3];
 402         u8 rsp_code;
 403         u8 reserved2[4];
 404 } __packed __aligned(2);
 405
 406 enum ibmvfc_fcp_rsp_flags {
 407         FCP_BIDI_RSP                    = 0x80,
 408         FCP_BIDI_READ_RESID_UNDER       = 0x40,
 409         FCP_BIDI_READ_RESID_OVER        = 0x20,
 410         FCP_CONF_REQ                    = 0x10,
 411         FCP_RESID_UNDER                 = 0x08,
 412         FCP_RESID_OVER                  = 0x04,
 413         FCP_SNS_LEN_VALID                       = 0x02,
 414         FCP_RSP_LEN_VALID                       = 0x01,
 415 };
 416
 417 union ibmvfc_fcp_rsp_data {
 418         struct ibmvfc_fcp_rsp_info info;
 419         u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)];
 420 } __packed __aligned(8);
 421
 422 struct ibmvfc_fcp_rsp {
 423         __be64 reserved;
 424         __be16 retry_delay_timer;
 425         u8 flags;
 426         u8 scsi_status;
 427         __be32 fcp_resid;
 428         __be32 fcp_sense_len;
 429         __be32 fcp_rsp_len;
 430         union ibmvfc_fcp_rsp_data data;
 431 } __packed __aligned(8);
 432
 433 enum ibmvfc_cmd_flags {
 434         IBMVFC_SCATTERLIST      = 0x0001,
 435         IBMVFC_NO_MEM_DESC      = 0x0002,
 436         IBMVFC_READ                     = 0x0004,
 437         IBMVFC_WRITE            = 0x0008,
 438         IBMVFC_TMF                      = 0x0080,
 439         IBMVFC_CLASS_3_ERR      = 0x0100,
 440 };
 441
 442 enum ibmvfc_fc_task_attr {
 443         IBMVFC_SIMPLE_TASK      = 0x00,
 444         IBMVFC_HEAD_OF_QUEUE    = 0x01,
 445         IBMVFC_ORDERED_TASK     = 0x02,
 446         IBMVFC_ACA_TASK         = 0x04,
 447 };
 448
 449 enum ibmvfc_fc_tmf_flags {
 450         IBMVFC_ABORT_TASK_SET   = 0x02,
 451         IBMVFC_LUN_RESET                = 0x10,
 452         IBMVFC_TARGET_RESET     = 0x20,
 453 };
 454
 455 struct ibmvfc_fcp_cmd_iu {
 456         struct scsi_lun lun;
 457         u8 crn;
 458         u8 pri_task_attr;
 459         u8 tmf_flags;
 460         u8 add_cdb_len;
 461 #define IBMVFC_RDDATA           0x02
 462 #define IBMVFC_WRDATA           0x01
 463         u8 cdb[IBMVFC_MAX_CDB_LEN];
 464         __be32 xfer_len;
 465 } __packed __aligned(4);
 466
 467 struct ibmvfc_cmd {
 468         __be64 task_tag;
 469         __be32 frame_type;
 470         __be32 payload_len;
 471         __be32 resp_len;
 472         __be32 adapter_resid;
 473         __be16 status;
 474         __be16 error;
 475         __be16 flags;
 476         __be16 response_flags;
 477 #define IBMVFC_ADAPTER_RESID_VALID      0x01
 478         __be32 cancel_key;
 479         __be32 exchange_id;
 480         struct srp_direct_buf ext_func;
 481         struct srp_direct_buf ioba;
 482         struct srp_direct_buf resp;
 483         __be64 correlation;
 484         __be64 tgt_scsi_id;
 485         __be64 tag;
 486         __be64 target_wwpn;
 487         __be64 reserved3;
 488         union {
 489                 struct {
 490                         struct ibmvfc_fcp_cmd_iu iu;
 491                         struct ibmvfc_fcp_rsp rsp;
 492                 } v1;
 493                 struct {
 494                         __be64 reserved4;
 495                         struct ibmvfc_fcp_cmd_iu iu;
 496                         struct ibmvfc_fcp_rsp rsp;
 497                 } v2;
 498         };
 499 } __packed __aligned(8);
 500
 501 struct ibmvfc_passthru_fc_iu {
 502         __be32 payload[7];
 503 #define IBMVFC_ADISC    0x52000000
 504         __be32 response[7];
 505 };
 506
 507 struct ibmvfc_passthru_iu {
 508         __be64 task_tag;
 509         __be32 cmd_len;
 510         __be32 rsp_len;
 511         __be16 status;
 512         __be16 error;
 513         __be32 flags;
 514 #define IBMVFC_FC_ELS           0x01
 515 #define IBMVFC_FC_CT_IU         0x02
 516         __be32 cancel_key;
 517 #define IBMVFC_PASSTHRU_CANCEL_KEY      0x80000000
 518 #define IBMVFC_INTERNAL_CANCEL_KEY      0x80000001
 519         __be32 reserved;
 520         struct srp_direct_buf cmd;
 521         struct srp_direct_buf rsp;
 522         __be64 correlation;
 523         __be64 scsi_id;
 524         __be64 tag;
 525         __be64 target_wwpn;
 526         __be64 reserved2[2];
 527 } __packed __aligned(8);
 528
 529 struct ibmvfc_passthru_mad {
 530         struct ibmvfc_mad_common common;
 531         struct srp_direct_buf cmd_ioba;
 532         struct ibmvfc_passthru_iu iu;
 533         struct ibmvfc_passthru_fc_iu fc_iu;
 534 } __packed __aligned(8);
 535
 536 struct ibmvfc_channel_enquiry {
 537         struct ibmvfc_mad_common common;
 538         __be32 flags;
 539 #define IBMVFC_NO_CHANNELS_TO_CRQ_SUPPORT       0x01
 540 #define IBMVFC_SUPPORT_VARIABLE_SUBQ_MSG        0x02
 541 #define IBMVFC_NO_N_TO_M_CHANNELS_SUPPORT       0x04
 542         __be32 num_scsi_subq_channels;
 543         __be32 num_nvmeof_subq_channels;
 544         __be32 num_scsi_vas_channels;
 545         __be32 num_nvmeof_vas_channels;
 546 } __packed __aligned(8);
 547
 548 struct ibmvfc_channel_setup_mad {
 549         struct ibmvfc_mad_common common;
 550         struct srp_direct_buf buffer;
 551 } __packed __aligned(8);
 552
 553 #define IBMVFC_MAX_CHANNELS     502
 554
 555 struct ibmvfc_channel_setup {
 556         __be32 flags;
 557 #define IBMVFC_CANCEL_CHANNELS          0x01
 558 #define IBMVFC_USE_BUFFER               0x02
 559 #define IBMVFC_CHANNELS_CANCELED        0x04
 560         __be32 reserved;
 561         __be32 num_scsi_subq_channels;
 562         __be32 num_nvmeof_subq_channels;
 563         __be32 num_scsi_vas_channels;
 564         __be32 num_nvmeof_vas_channels;
 565         struct srp_direct_buf buffer;
 566         __be64 reserved2[5];
 567         __be64 channel_handles[IBMVFC_MAX_CHANNELS];
 568 } __packed __aligned(8);
 569
 570 struct ibmvfc_connection_info {
 571         struct ibmvfc_mad_common common;
 572         __be64 information_bits;
 573 #define IBMVFC_NO_FC_IO_CHANNEL         0x01
 574 #define IBMVFC_NO_PHYP_VAS              0x02
 575 #define IBMVFC_NO_PHYP_SUBQ             0x04
 576 #define IBMVFC_PHYP_DEPRECATED_SUBQ     0x08
 577 #define IBMVFC_PHYP_PRESERVED_SUBQ      0x10
 578 #define IBMVFC_PHYP_FULL_SUBQ           0x20
 579         __be64 reserved[16];
 580 } __packed __aligned(8);
 581
 582 struct ibmvfc_trace_start_entry {
 583         u32 xfer_len;
 584 } __packed;
 585
 586 struct ibmvfc_trace_end_entry {
 587         u16 status;
 588         u16 error;
 589         u8 fcp_rsp_flags;
 590         u8 rsp_code;
 591         u8 scsi_status;
 592         u8 reserved;
 593 } __packed;
 594
 595 struct ibmvfc_trace_entry {
 596         struct ibmvfc_event *evt;
 597         u32 time;
 598         u32 scsi_id;
 599         u32 lun;
 600         u8 fmt;
 601         u8 op_code;
 602         u8 tmf_flags;
 603         u8 type;
 604 #define IBMVFC_TRC_START        0x00
 605 #define IBMVFC_TRC_END          0xff
 606         union {
 607                 struct ibmvfc_trace_start_entry start;
 608                 struct ibmvfc_trace_end_entry end;
 609         } u;
 610 } __packed __aligned(8);
 611
 612 enum ibmvfc_crq_formats {
 613         IBMVFC_CMD_FORMAT               = 0x01,
 614         IBMVFC_ASYNC_EVENT      = 0x02,
 615         IBMVFC_MAD_FORMAT               = 0x04,
 616 };
 617
 618 enum ibmvfc_async_event {
 619         IBMVFC_AE_ELS_PLOGI             = 0x0001,
 620         IBMVFC_AE_ELS_LOGO              = 0x0002,
 621         IBMVFC_AE_ELS_PRLO              = 0x0004,
 622         IBMVFC_AE_SCN_NPORT             = 0x0008,
 623         IBMVFC_AE_SCN_GROUP             = 0x0010,
 624         IBMVFC_AE_SCN_DOMAIN            = 0x0020,
 625         IBMVFC_AE_SCN_FABRIC            = 0x0040,
 626         IBMVFC_AE_LINK_UP                       = 0x0080,
 627         IBMVFC_AE_LINK_DOWN             = 0x0100,
 628         IBMVFC_AE_LINK_DEAD             = 0x0200,
 629         IBMVFC_AE_HALT                  = 0x0400,
 630         IBMVFC_AE_RESUME                        = 0x0800,
 631         IBMVFC_AE_ADAPTER_FAILED        = 0x1000,
 632         IBMVFC_AE_FPIN                  = 0x2000,
 633 };
 634
 635 struct ibmvfc_async_desc {
 636         const char *desc;
 637         enum ibmvfc_async_event ae;
 638         int log_level;
 639 };
 640
 641 struct ibmvfc_crq {
 642         volatile u8 valid;
 643         volatile u8 format;
 644         u8 reserved[6];
 645         volatile __be64 ioba;
 646 } __packed __aligned(8);
 647
 648 struct ibmvfc_crq_queue {
 649         struct ibmvfc_crq *msgs;
 650         int size, cur;
 651         dma_addr_t msg_token;
 652 };
 653
 654 enum ibmvfc_ae_link_state {
 655         IBMVFC_AE_LS_LINK_UP            = 0x01,
 656         IBMVFC_AE_LS_LINK_BOUNCED       = 0x02,
 657         IBMVFC_AE_LS_LINK_DOWN          = 0x04,
 658         IBMVFC_AE_LS_LINK_DEAD          = 0x08,
 659 };
 660
 661 enum ibmvfc_ae_fpin_status {
 662         IBMVFC_AE_FPIN_LINK_CONGESTED   = 0x1,
 663         IBMVFC_AE_FPIN_PORT_CONGESTED   = 0x2,
 664         IBMVFC_AE_FPIN_PORT_CLEARED     = 0x3,
 665         IBMVFC_AE_FPIN_PORT_DEGRADED    = 0x4,
 666 };
 667
 668 struct ibmvfc_async_crq {
 669         volatile u8 valid;
 670         u8 link_state;
 671         u8 fpin_status;
 672         u8 pad;
 673         __be32 pad2;
 674         volatile __be64 event;
 675         volatile __be64 scsi_id;
 676         volatile __be64 wwpn;
 677         volatile __be64 node_name;
 678         __be64 reserved;
 679 } __packed __aligned(8);
 680
 681 struct ibmvfc_async_crq_queue {
 682         struct ibmvfc_async_crq *msgs;
 683         int size, cur;
 684         dma_addr_t msg_token;
 685 };
 686
 687 union ibmvfc_iu {
 688         struct ibmvfc_mad_common mad_common;
 689         struct ibmvfc_npiv_login_mad npiv_login;
 690         struct ibmvfc_npiv_logout_mad npiv_logout;
 691         struct ibmvfc_discover_targets discover_targets;
 692         struct ibmvfc_port_login plogi;
 693         struct ibmvfc_process_login prli;
 694         struct ibmvfc_move_login move_login;
 695         struct ibmvfc_query_tgt query_tgt;
 696         struct ibmvfc_implicit_logout implicit_logout;
 697         struct ibmvfc_tmf tmf;
 698         struct ibmvfc_cmd cmd;
 699         struct ibmvfc_passthru_mad passthru;
 700         struct ibmvfc_channel_enquiry channel_enquiry;
 701         struct ibmvfc_channel_setup_mad channel_setup;
 702         struct ibmvfc_connection_info connection_info;
 703 } __packed __aligned(8);
 704
 705 enum ibmvfc_target_action {
 706         IBMVFC_TGT_ACTION_NONE = 0,
 707         IBMVFC_TGT_ACTION_INIT,
 708         IBMVFC_TGT_ACTION_INIT_WAIT,
 709         IBMVFC_TGT_ACTION_LOGOUT_RPORT,
 710         IBMVFC_TGT_ACTION_LOGOUT_RPORT_WAIT,
 711         IBMVFC_TGT_ACTION_DEL_RPORT,
 712         IBMVFC_TGT_ACTION_DELETED_RPORT,
 713         IBMVFC_TGT_ACTION_DEL_AND_LOGOUT_RPORT,
 714         IBMVFC_TGT_ACTION_LOGOUT_DELETED_RPORT,
 715 };
 716
 717 struct ibmvfc_target {
 718         struct list_head queue;
 719         struct ibmvfc_host *vhost;
 720         u64 scsi_id;
 721         u64 wwpn;
 722         u64 old_scsi_id;
 723         struct fc_rport *rport;
 724         int target_id;
 725         enum ibmvfc_target_action action;
 726         int need_login;
 727         int add_rport;
 728         int init_retries;
 729         int logo_rcvd;
 730         u32 cancel_key;
 731         struct ibmvfc_service_parms service_parms;
 732         struct ibmvfc_service_parms service_parms_change;
 733         struct fc_rport_identifiers ids;
 734         void (*job_step) (struct ibmvfc_target *);
 735         struct timer_list timer;
 736         struct kref kref;
 737 };
 738
 739 /* a unit of work for the hosting partition */
 740 struct ibmvfc_event {
 741         struct list_head queue;
 742         struct ibmvfc_host *vhost;
 743         struct ibmvfc_target *tgt;
 744         struct scsi_cmnd *cmnd;
 745         atomic_t free;
 746         union ibmvfc_iu *xfer_iu;
 747         void (*done) (struct ibmvfc_event *);
 748         struct ibmvfc_crq crq;
 749         union ibmvfc_iu iu;
 750         union ibmvfc_iu *sync_iu;
 751         struct srp_direct_buf *ext_list;
 752         dma_addr_t ext_list_token;
 753         struct completion comp;
 754         struct completion *eh_comp;
 755         struct timer_list timer;
 756 };
 757
 758 /* a pool of event structs for use */
 759 struct ibmvfc_event_pool {
 760         struct ibmvfc_event *events;
 761         u32 size;
 762         union ibmvfc_iu *iu_storage;
 763         dma_addr_t iu_token;
 764 };
 765
 766 enum ibmvfc_host_action {
 767         IBMVFC_HOST_ACTION_NONE = 0,
 768         IBMVFC_HOST_ACTION_RESET,
 769         IBMVFC_HOST_ACTION_REENABLE,
 770         IBMVFC_HOST_ACTION_LOGO,
 771         IBMVFC_HOST_ACTION_LOGO_WAIT,
 772         IBMVFC_HOST_ACTION_INIT,
 773         IBMVFC_HOST_ACTION_INIT_WAIT,
 774         IBMVFC_HOST_ACTION_QUERY,
 775         IBMVFC_HOST_ACTION_QUERY_TGTS,
 776         IBMVFC_HOST_ACTION_TGT_DEL,
 777         IBMVFC_HOST_ACTION_ALLOC_TGTS,
 778         IBMVFC_HOST_ACTION_TGT_INIT,
 779         IBMVFC_HOST_ACTION_TGT_DEL_FAILED,
 780 };
 781
 782 enum ibmvfc_host_state {
 783         IBMVFC_NO_CRQ = 0,
 784         IBMVFC_INITIALIZING,
 785         IBMVFC_ACTIVE,
 786         IBMVFC_HALTED,
 787         IBMVFC_LINK_DOWN,
 788         IBMVFC_LINK_DEAD,
 789         IBMVFC_HOST_OFFLINE,
 790 };
 791
 792 struct ibmvfc_host {
 793         char name[8];
 794         struct list_head queue;
 795         struct Scsi_Host *host;
 796         enum ibmvfc_host_state state;
 797         enum ibmvfc_host_action action;
 798 #define IBMVFC_NUM_TRACE_INDEX_BITS             8
 799 #define IBMVFC_NUM_TRACE_ENTRIES                (1 << IBMVFC_NUM_TRACE_INDEX_BITS)
 800 #define IBMVFC_TRACE_SIZE       (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES)
 801         struct ibmvfc_trace_entry *trace;
 802         u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS;
 803         int num_targets;
 804         struct list_head targets;
 805         struct list_head sent;
 806         struct list_head free;
 807         struct device *dev;
 808         struct ibmvfc_event_pool pool;
 809         struct dma_pool *sg_pool;
 810         mempool_t *tgt_pool;
 811         struct ibmvfc_crq_queue crq;
 812         struct ibmvfc_async_crq_queue async_crq;
 813         struct ibmvfc_npiv_login login_info;
 814         union ibmvfc_npiv_login_data *login_buf;
 815         dma_addr_t login_buf_dma;
 816         int disc_buf_sz;
 817         int log_level;
 818         struct ibmvfc_discover_targets_entry *disc_buf;
 819         struct mutex passthru_mutex;
 820         int task_set;
 821         int init_retries;
 822         int discovery_threads;
 823         int abort_threads;
 824         int client_migrated;
 825         int reinit;
 826         int delay_init;
 827         int scan_complete;
 828         int logged_in;
 829         int aborting_passthru;
 830         int events_to_log;
 831 #define IBMVFC_AE_LINKUP        0x0001
 832 #define IBMVFC_AE_LINKDOWN      0x0002
 833 #define IBMVFC_AE_RSCN          0x0004
 834         dma_addr_t disc_buf_dma;
 835         unsigned int partition_number;
 836         char partition_name[97];
 837         void (*job_step) (struct ibmvfc_host *);
 838         struct task_struct *work_thread;
 839         struct tasklet_struct tasklet;
 840         struct work_struct rport_add_work_q;
 841         wait_queue_head_t init_wait_q;
 842         wait_queue_head_t work_wait_q;
 843 };
 844
 845 #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0)
 846
 847 #define tgt_dbg(t, fmt, ...)                    \
 848         DBG_CMD(dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__))
 849
 850 #define tgt_info(t, fmt, ...)           \
 851         dev_info((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 852
 853 #define tgt_err(t, fmt, ...)            \
 854         dev_err((t)->vhost->dev, "%llX: " fmt, (t)->scsi_id, ##__VA_ARGS__)
 855
 856 #define tgt_log(t, level, fmt, ...) \
 857         do { \
 858                 if ((t)->vhost->log_level >= level) \
 859                         tgt_err(t, fmt, ##__VA_ARGS__); \
 860         } while (0)
 861
 862 #define ibmvfc_dbg(vhost, ...) \
 863         DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__))
 864
 865 #define ibmvfc_log(vhost, level, ...) \
 866         do { \
 867                 if ((vhost)->log_level >= level) \
 868                         dev_err((vhost)->dev, ##__VA_ARGS__); \
 869         } while (0)
 870
 871 #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__))
 872 #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__))
 873
 874 #ifdef CONFIG_SCSI_IBMVFC_TRACE
 875 #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr)
 876 #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr)
 877 #else
 878 #define ibmvfc_create_trace_file(kobj, attr) 0
 879 #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0)
 880 #endif
 881
 882 #endif