drivers/scsi/qla2xxx/qla_target.h

   1 /*
   2  *  Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
   3  *  Copyright (C) 2004 - 2005 Leonid Stoljar
   4  *  Copyright (C) 2006 Nathaniel Clark <nate@misrule.us>
   5  *  Copyright (C) 2007 - 2010 ID7 Ltd.
   6  *
   7  *  Forward port and refactoring to modern qla2xxx and target/configfs
   8  *
   9  *  Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
  10  *
  11  *  Additional file for the target driver support.
  12  *
  13  *  This program is free software; you can redistribute it and/or
  14  *  modify it under the terms of the GNU General Public License
  15  *  as published by the Free Software Foundation; either version 2
  16  *  of the License, or (at your option) any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  21  *  GNU General Public License for more details.
  22  */
  23 /*
  24  * This is the global def file that is useful for including from the
  25  * target portion.
  26  */
  27
  28 #ifndef __QLA_TARGET_H
  29 #define __QLA_TARGET_H
  30
  31 #include "qla_def.h"
  32
  33 /*
  34  * Must be changed on any change in any initiator visible interfaces or
  35  * data in the target add-on
  36  */
  37 #define QLA2XXX_TARGET_MAGIC    269
  38
  39 /*
  40  * Must be changed on any change in any target visible interfaces or
  41  * data in the initiator
  42  */
  43 #define QLA2XXX_INITIATOR_MAGIC   57222
  44
  45 #define QLA2XXX_INI_MODE_STR_EXCLUSIVE  "exclusive"
  46 #define QLA2XXX_INI_MODE_STR_DISABLED   "disabled"
  47 #define QLA2XXX_INI_MODE_STR_ENABLED    "enabled"
  48
  49 #define QLA2XXX_INI_MODE_EXCLUSIVE      0
  50 #define QLA2XXX_INI_MODE_DISABLED       1
  51 #define QLA2XXX_INI_MODE_ENABLED        2
  52
  53 #define QLA2XXX_COMMAND_COUNT_INIT      250
  54 #define QLA2XXX_IMMED_NOTIFY_COUNT_INIT 250
  55
  56 /*
  57  * Used to mark which completion handles (for RIO Status's) are for CTIO's
  58  * vs. regular (non-target) info. This is checked for in
  59  * qla2x00_process_response_queue() to see if a handle coming back in a
  60  * multi-complete should come to the tgt driver or be handled there by qla2xxx
  61  */
  62 #define CTIO_COMPLETION_HANDLE_MARK     BIT_29
  63 #if (CTIO_COMPLETION_HANDLE_MARK <= DEFAULT_OUTSTANDING_COMMANDS)
  64 #error "CTIO_COMPLETION_HANDLE_MARK not larger than "
  65         "DEFAULT_OUTSTANDING_COMMANDS"
  66 #endif
  67 #define HANDLE_IS_CTIO_COMP(h) (h & CTIO_COMPLETION_HANDLE_MARK)
  68
  69 /* Used to mark CTIO as intermediate */
  70 #define CTIO_INTERMEDIATE_HANDLE_MARK   BIT_30
  71
  72 #ifndef OF_SS_MODE_0
  73 /*
  74  * ISP target entries - Flags bit definitions.
  75  */
  76 #define OF_SS_MODE_0        0
  77 #define OF_SS_MODE_1        1
  78 #define OF_SS_MODE_2        2
  79 #define OF_SS_MODE_3        3
  80
  81 #define OF_EXPL_CONF        BIT_5       /* Explicit Confirmation Requested */
  82 #define OF_DATA_IN          BIT_6       /* Data in to initiator */
  83                                         /*  (data from target to initiator) */
  84 #define OF_DATA_OUT         BIT_7       /* Data out from initiator */
  85                                         /*  (data from initiator to target) */
  86 #define OF_NO_DATA          (BIT_7 | BIT_6)
  87 #define OF_INC_RC           BIT_8       /* Increment command resource count */
  88 #define OF_FAST_POST        BIT_9       /* Enable mailbox fast posting. */
  89 #define OF_CONF_REQ         BIT_13      /* Confirmation Requested */
  90 #define OF_TERM_EXCH        BIT_14      /* Terminate exchange */
  91 #define OF_SSTS             BIT_15      /* Send SCSI status */
  92 #endif
  93
  94 #ifndef QLA_TGT_DATASEGS_PER_CMD32
  95 #define QLA_TGT_DATASEGS_PER_CMD32      3
  96 #define QLA_TGT_DATASEGS_PER_CONT32     7
  97 #define QLA_TGT_MAX_SG32(ql) \
  98         (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD32 + \
  99                 QLA_TGT_DATASEGS_PER_CONT32*((ql) - 1)) : 0)
 100
 101 #define QLA_TGT_DATASEGS_PER_CMD64      2
 102 #define QLA_TGT_DATASEGS_PER_CONT64     5
 103 #define QLA_TGT_MAX_SG64(ql) \
 104         (((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD64 + \
 105                 QLA_TGT_DATASEGS_PER_CONT64*((ql) - 1)) : 0)
 106 #endif
 107
 108 #ifndef QLA_TGT_DATASEGS_PER_CMD_24XX
 109 #define QLA_TGT_DATASEGS_PER_CMD_24XX   1
 110 #define QLA_TGT_DATASEGS_PER_CONT_24XX  5
 111 #define QLA_TGT_MAX_SG_24XX(ql) \
 112         (min(1270, ((ql) > 0) ? (QLA_TGT_DATASEGS_PER_CMD_24XX + \
 113                 QLA_TGT_DATASEGS_PER_CONT_24XX*((ql) - 1)) : 0))
 114 #endif
 115 #endif
 116
 117 #define GET_TARGET_ID(ha, iocb) ((HAS_EXTENDED_IDS(ha))                 \
 118                          ? le16_to_cpu((iocb)->u.isp2x.target.extended) \
 119                          : (uint16_t)(iocb)->u.isp2x.target.id.standard)
 120
 121 #ifndef IMMED_NOTIFY_TYPE
 122 #define IMMED_NOTIFY_TYPE 0x0D          /* Immediate notify entry. */
 123 /*
 124  * ISP queue -  immediate notify entry structure definition.
 125  *              This is sent by the ISP to the Target driver.
 126  *              This IOCB would have report of events sent by the
 127  *              initiator, that needs to be handled by the target
 128  *              driver immediately.
 129  */
 130 struct imm_ntfy_from_isp {
 131         uint8_t  entry_type;                /* Entry type. */
 132         uint8_t  entry_count;               /* Entry count. */
 133         uint8_t  sys_define;                /* System defined. */
 134         uint8_t  entry_status;              /* Entry Status. */
 135         union {
 136                 struct {
 137                         uint32_t sys_define_2; /* System defined. */
 138                         target_id_t target;
 139                         uint16_t lun;
 140                         uint8_t  target_id;
 141                         uint8_t  reserved_1;
 142                         uint16_t status_modifier;
 143                         uint16_t status;
 144                         uint16_t task_flags;
 145                         uint16_t seq_id;
 146                         uint16_t srr_rx_id;
 147                         uint32_t srr_rel_offs;
 148                         uint16_t srr_ui;
 149 #define SRR_IU_DATA_IN  0x1
 150 #define SRR_IU_DATA_OUT 0x5
 151 #define SRR_IU_STATUS   0x7
 152                         uint16_t srr_ox_id;
 153                         uint8_t reserved_2[28];
 154                 } isp2x;
 155                 struct {
 156                         uint32_t reserved;
 157                         uint16_t nport_handle;
 158                         uint16_t reserved_2;
 159                         uint16_t flags;
 160 #define NOTIFY24XX_FLAGS_GLOBAL_TPRLO   BIT_1
 161 #define NOTIFY24XX_FLAGS_PUREX_IOCB     BIT_0
 162                         uint16_t srr_rx_id;
 163                         uint16_t status;
 164                         uint8_t  status_subcode;
 165                         uint8_t  fw_handle;
 166                         uint32_t exchange_address;
 167                         uint32_t srr_rel_offs;
 168                         uint16_t srr_ui;
 169                         uint16_t srr_ox_id;
 170                         uint8_t  reserved_4[19];
 171                         uint8_t  vp_index;
 172                         uint32_t reserved_5;
 173                         uint8_t  port_id[3];
 174                         uint8_t  reserved_6;
 175                 } isp24;
 176         } u;
 177         uint16_t reserved_7;
 178         uint16_t ox_id;
 179 } __packed;
 180 #endif
 181
 182 #ifndef NOTIFY_ACK_TYPE
 183 #define NOTIFY_ACK_TYPE 0x0E      /* Notify acknowledge entry. */
 184 /*
 185  * ISP queue -  notify acknowledge entry structure definition.
 186  *              This is sent to the ISP from the target driver.
 187  */
 188 struct nack_to_isp {
 189         uint8_t  entry_type;                /* Entry type. */
 190         uint8_t  entry_count;               /* Entry count. */
 191         uint8_t  sys_define;                /* System defined. */
 192         uint8_t  entry_status;              /* Entry Status. */
 193         union {
 194                 struct {
 195                         uint32_t sys_define_2; /* System defined. */
 196                         target_id_t target;
 197                         uint8_t  target_id;
 198                         uint8_t  reserved_1;
 199                         uint16_t flags;
 200                         uint16_t resp_code;
 201                         uint16_t status;
 202                         uint16_t task_flags;
 203                         uint16_t seq_id;
 204                         uint16_t srr_rx_id;
 205                         uint32_t srr_rel_offs;
 206                         uint16_t srr_ui;
 207                         uint16_t srr_flags;
 208                         uint16_t srr_reject_code;
 209                         uint8_t  srr_reject_vendor_uniq;
 210                         uint8_t  srr_reject_code_expl;
 211                         uint8_t  reserved_2[24];
 212                 } isp2x;
 213                 struct {
 214                         uint32_t handle;
 215                         uint16_t nport_handle;
 216                         uint16_t reserved_1;
 217                         uint16_t flags;
 218                         uint16_t srr_rx_id;
 219                         uint16_t status;
 220                         uint8_t  status_subcode;
 221                         uint8_t  fw_handle;
 222                         uint32_t exchange_address;
 223                         uint32_t srr_rel_offs;
 224                         uint16_t srr_ui;
 225                         uint16_t srr_flags;
 226                         uint8_t  reserved_4[19];
 227                         uint8_t  vp_index;
 228                         uint8_t  srr_reject_vendor_uniq;
 229                         uint8_t  srr_reject_code_expl;
 230                         uint8_t  srr_reject_code;
 231                         uint8_t  reserved_5[5];
 232                 } isp24;
 233         } u;
 234         uint8_t  reserved[2];
 235         uint16_t ox_id;
 236 } __packed;
 237 #define NOTIFY_ACK_SRR_FLAGS_ACCEPT     0
 238 #define NOTIFY_ACK_SRR_FLAGS_REJECT     1
 239
 240 #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM  0x9
 241
 242 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL                0
 243 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA  0x2a
 244
 245 #define NOTIFY_ACK_SUCCESS      0x01
 246 #endif
 247
 248 #ifndef ACCEPT_TGT_IO_TYPE
 249 #define ACCEPT_TGT_IO_TYPE 0x16 /* Accept target I/O entry. */
 250 #endif
 251
 252 #ifndef CONTINUE_TGT_IO_TYPE
 253 #define CONTINUE_TGT_IO_TYPE 0x17
 254 /*
 255  * ISP queue -  Continue Target I/O (CTIO) entry for status mode 0 structure.
 256  *              This structure is sent to the ISP 2xxx from target driver.
 257  */
 258 struct ctio_to_2xxx {
 259         uint8_t  entry_type;            /* Entry type. */
 260         uint8_t  entry_count;           /* Entry count. */
 261         uint8_t  sys_define;            /* System defined. */
 262         uint8_t  entry_status;          /* Entry Status. */
 263         uint32_t handle;                /* System defined handle */
 264         target_id_t target;
 265         uint16_t rx_id;
 266         uint16_t flags;
 267         uint16_t status;
 268         uint16_t timeout;               /* 0 = 30 seconds, 0xFFFF = disable */
 269         uint16_t dseg_count;            /* Data segment count. */
 270         uint32_t relative_offset;
 271         uint32_t residual;
 272         uint16_t reserved_1[3];
 273         uint16_t scsi_status;
 274         uint32_t transfer_length;
 275         uint32_t dseg_0_address;        /* Data segment 0 address. */
 276         uint32_t dseg_0_length;         /* Data segment 0 length. */
 277         uint32_t dseg_1_address;        /* Data segment 1 address. */
 278         uint32_t dseg_1_length;         /* Data segment 1 length. */
 279         uint32_t dseg_2_address;        /* Data segment 2 address. */
 280         uint32_t dseg_2_length;         /* Data segment 2 length. */
 281 } __packed;
 282 #define ATIO_PATH_INVALID       0x07
 283 #define ATIO_CANT_PROV_CAP      0x16
 284 #define ATIO_CDB_VALID          0x3D
 285
 286 #define ATIO_EXEC_READ          BIT_1
 287 #define ATIO_EXEC_WRITE         BIT_0
 288 #endif
 289
 290 #ifndef CTIO_A64_TYPE
 291 #define CTIO_A64_TYPE 0x1F
 292 #define CTIO_SUCCESS                    0x01
 293 #define CTIO_ABORTED                    0x02
 294 #define CTIO_INVALID_RX_ID              0x08
 295 #define CTIO_TIMEOUT                    0x0B
 296 #define CTIO_LIP_RESET                  0x0E
 297 #define CTIO_TARGET_RESET               0x17
 298 #define CTIO_PORT_UNAVAILABLE           0x28
 299 #define CTIO_PORT_LOGGED_OUT            0x29
 300 #define CTIO_PORT_CONF_CHANGED          0x2A
 301 #define CTIO_SRR_RECEIVED               0x45
 302 #endif
 303
 304 #ifndef CTIO_RET_TYPE
 305 #define CTIO_RET_TYPE   0x17            /* CTIO return entry */
 306 #define ATIO_TYPE7 0x06 /* Accept target I/O entry for 24xx */
 307
 308 struct fcp_hdr {
 309         uint8_t  r_ctl;
 310         uint8_t  d_id[3];
 311         uint8_t  cs_ctl;
 312         uint8_t  s_id[3];
 313         uint8_t  type;
 314         uint8_t  f_ctl[3];
 315         uint8_t  seq_id;
 316         uint8_t  df_ctl;
 317         uint16_t seq_cnt;
 318         uint16_t ox_id;
 319         uint16_t rx_id;
 320         uint32_t parameter;
 321 } __packed;
 322
 323 struct fcp_hdr_le {
 324         uint8_t  d_id[3];
 325         uint8_t  r_ctl;
 326         uint8_t  s_id[3];
 327         uint8_t  cs_ctl;
 328         uint8_t  f_ctl[3];
 329         uint8_t  type;
 330         uint16_t seq_cnt;
 331         uint8_t  df_ctl;
 332         uint8_t  seq_id;
 333         uint16_t rx_id;
 334         uint16_t ox_id;
 335         uint32_t parameter;
 336 } __packed;
 337
 338 #define F_CTL_EXCH_CONTEXT_RESP BIT_23
 339 #define F_CTL_SEQ_CONTEXT_RESIP BIT_22
 340 #define F_CTL_LAST_SEQ          BIT_20
 341 #define F_CTL_END_SEQ           BIT_19
 342 #define F_CTL_SEQ_INITIATIVE    BIT_16
 343
 344 #define R_CTL_BASIC_LINK_SERV   0x80
 345 #define R_CTL_B_ACC             0x4
 346 #define R_CTL_B_RJT             0x5
 347
 348 struct atio7_fcp_cmnd {
 349         uint64_t lun;
 350         uint8_t  cmnd_ref;
 351         uint8_t  task_attr:3;
 352         uint8_t  reserved:5;
 353         uint8_t  task_mgmt_flags;
 354 #define FCP_CMND_TASK_MGMT_CLEAR_ACA            6
 355 #define FCP_CMND_TASK_MGMT_TARGET_RESET         5
 356 #define FCP_CMND_TASK_MGMT_LU_RESET             4
 357 #define FCP_CMND_TASK_MGMT_CLEAR_TASK_SET       2
 358 #define FCP_CMND_TASK_MGMT_ABORT_TASK_SET       1
 359         uint8_t  wrdata:1;
 360         uint8_t  rddata:1;
 361         uint8_t  add_cdb_len:6;
 362         uint8_t  cdb[16];
 363         /*
 364          * add_cdb is optional and can absent from struct atio7_fcp_cmnd. Size 4
 365          * only to make sizeof(struct atio7_fcp_cmnd) be as expected by
 366          * BUILD_BUG_ON in qlt_init().
 367          */
 368         uint8_t  add_cdb[4];
 369         /* uint32_t data_length; */
 370 } __packed;
 371
 372 /*
 373  * ISP queue -  Accept Target I/O (ATIO) type entry IOCB structure.
 374  *              This is sent from the ISP to the target driver.
 375  */
 376 struct atio_from_isp {
 377         union {
 378                 struct {
 379                         uint16_t entry_hdr;
 380                         uint8_t  sys_define;   /* System defined. */
 381                         uint8_t  entry_status; /* Entry Status.   */
 382                         uint32_t sys_define_2; /* System defined. */
 383                         target_id_t target;
 384                         uint16_t rx_id;
 385                         uint16_t flags;
 386                         uint16_t status;
 387                         uint8_t  command_ref;
 388                         uint8_t  task_codes;
 389                         uint8_t  task_flags;
 390                         uint8_t  execution_codes;
 391                         uint8_t  cdb[MAX_CMDSZ];
 392                         uint32_t data_length;
 393                         uint16_t lun;
 394                         uint8_t  initiator_port_name[WWN_SIZE]; /* on qla23xx */
 395                         uint16_t reserved_32[6];
 396                         uint16_t ox_id;
 397                 } isp2x;
 398                 struct {
 399                         uint16_t entry_hdr;
 400                         uint8_t  fcp_cmnd_len_low;
 401                         uint8_t  fcp_cmnd_len_high:4;
 402                         uint8_t  attr:4;
 403                         uint32_t exchange_addr;
 404 #define ATIO_EXCHANGE_ADDRESS_UNKNOWN   0xFFFFFFFF
 405                         struct fcp_hdr fcp_hdr;
 406                         struct atio7_fcp_cmnd fcp_cmnd;
 407                 } isp24;
 408                 struct {
 409                         uint8_t  entry_type;    /* Entry type. */
 410                         uint8_t  entry_count;   /* Entry count. */
 411                         uint8_t  data[58];
 412                         uint32_t signature;
 413 #define ATIO_PROCESSED 0xDEADDEAD               /* Signature */
 414                 } raw;
 415         } u;
 416 } __packed;
 417
 418 #define CTIO_TYPE7 0x12 /* Continue target I/O entry (for 24xx) */
 419
 420 /*
 421  * ISP queue -  Continue Target I/O (ATIO) type 7 entry (for 24xx) structure.
 422  *              This structure is sent to the ISP 24xx from the target driver.
 423  */
 424
 425 struct ctio7_to_24xx {
 426         uint8_t  entry_type;                /* Entry type. */
 427         uint8_t  entry_count;               /* Entry count. */
 428         uint8_t  sys_define;                /* System defined. */
 429         uint8_t  entry_status;              /* Entry Status. */
 430         uint32_t handle;                    /* System defined handle */
 431         uint16_t nport_handle;
 432 #define CTIO7_NHANDLE_UNRECOGNIZED      0xFFFF
 433         uint16_t timeout;
 434         uint16_t dseg_count;                /* Data segment count. */
 435         uint8_t  vp_index;
 436         uint8_t  add_flags;
 437         uint8_t  initiator_id[3];
 438         uint8_t  reserved;
 439         uint32_t exchange_addr;
 440         union {
 441                 struct {
 442                         uint16_t reserved1;
 443                         uint16_t flags;
 444                         uint32_t residual;
 445                         uint16_t ox_id;
 446                         uint16_t scsi_status;
 447                         uint32_t relative_offset;
 448                         uint32_t reserved2;
 449                         uint32_t transfer_length;
 450                         uint32_t reserved3;
 451                         /* Data segment 0 address. */
 452                         uint32_t dseg_0_address[2];
 453                         /* Data segment 0 length. */
 454                         uint32_t dseg_0_length;
 455                 } status0;
 456                 struct {
 457                         uint16_t sense_length;
 458                         uint16_t flags;
 459                         uint32_t residual;
 460                         uint16_t ox_id;
 461                         uint16_t scsi_status;
 462                         uint16_t response_len;
 463                         uint16_t reserved;
 464                         uint8_t sense_data[24];
 465                 } status1;
 466         } u;
 467 } __packed;
 468
 469 /*
 470  * ISP queue - CTIO type 7 from ISP 24xx to target driver
 471  * returned entry structure.
 472  */
 473 struct ctio7_from_24xx {
 474         uint8_t  entry_type;                /* Entry type. */
 475         uint8_t  entry_count;               /* Entry count. */
 476         uint8_t  sys_define;                /* System defined. */
 477         uint8_t  entry_status;              /* Entry Status. */
 478         uint32_t handle;                    /* System defined handle */
 479         uint16_t status;
 480         uint16_t timeout;
 481         uint16_t dseg_count;                /* Data segment count. */
 482         uint8_t  vp_index;
 483         uint8_t  reserved1[5];
 484         uint32_t exchange_address;
 485         uint16_t reserved2;
 486         uint16_t flags;
 487         uint32_t residual;
 488         uint16_t ox_id;
 489         uint16_t reserved3;
 490         uint32_t relative_offset;
 491         uint8_t  reserved4[24];
 492 } __packed;
 493
 494 /* CTIO7 flags values */
 495 #define CTIO7_FLAGS_SEND_STATUS         BIT_15
 496 #define CTIO7_FLAGS_TERMINATE           BIT_14
 497 #define CTIO7_FLAGS_CONFORM_REQ         BIT_13
 498 #define CTIO7_FLAGS_DONT_RET_CTIO       BIT_8
 499 #define CTIO7_FLAGS_STATUS_MODE_0       0
 500 #define CTIO7_FLAGS_STATUS_MODE_1       BIT_6
 501 #define CTIO7_FLAGS_EXPLICIT_CONFORM    BIT_5
 502 #define CTIO7_FLAGS_CONFIRM_SATISF      BIT_4
 503 #define CTIO7_FLAGS_DSD_PTR             BIT_2
 504 #define CTIO7_FLAGS_DATA_IN             BIT_1
 505 #define CTIO7_FLAGS_DATA_OUT            BIT_0
 506
 507 #define ELS_PLOGI                       0x3
 508 #define ELS_FLOGI                       0x4
 509 #define ELS_LOGO                        0x5
 510 #define ELS_PRLI                        0x20
 511 #define ELS_PRLO                        0x21
 512 #define ELS_TPRLO                       0x24
 513 #define ELS_PDISC                       0x50
 514 #define ELS_ADISC                       0x52
 515
 516 /*
 517  * ISP queue - ABTS received/response entries structure definition for 24xx.
 518  */
 519 #define ABTS_RECV_24XX          0x54 /* ABTS received (for 24xx) */
 520 #define ABTS_RESP_24XX          0x55 /* ABTS responce (for 24xx) */
 521
 522 /*
 523  * ISP queue -  ABTS received IOCB entry structure definition for 24xx.
 524  *              The ABTS BLS received from the wire is sent to the
 525  *              target driver by the ISP 24xx.
 526  *              The IOCB is placed on the response queue.
 527  */
 528 struct abts_recv_from_24xx {
 529         uint8_t  entry_type;                /* Entry type. */
 530         uint8_t  entry_count;               /* Entry count. */
 531         uint8_t  sys_define;                /* System defined. */
 532         uint8_t  entry_status;              /* Entry Status. */
 533         uint8_t  reserved_1[6];
 534         uint16_t nport_handle;
 535         uint8_t  reserved_2[2];
 536         uint8_t  vp_index;
 537         uint8_t  reserved_3:4;
 538         uint8_t  sof_type:4;
 539         uint32_t exchange_address;
 540         struct fcp_hdr_le fcp_hdr_le;
 541         uint8_t  reserved_4[16];
 542         uint32_t exchange_addr_to_abort;
 543 } __packed;
 544
 545 #define ABTS_PARAM_ABORT_SEQ            BIT_0
 546
 547 struct ba_acc_le {
 548         uint16_t reserved;
 549         uint8_t  seq_id_last;
 550         uint8_t  seq_id_valid;
 551 #define SEQ_ID_VALID    0x80
 552 #define SEQ_ID_INVALID  0x00
 553         uint16_t rx_id;
 554         uint16_t ox_id;
 555         uint16_t high_seq_cnt;
 556         uint16_t low_seq_cnt;
 557 } __packed;
 558
 559 struct ba_rjt_le {
 560         uint8_t vendor_uniq;
 561         uint8_t reason_expl;
 562         uint8_t reason_code;
 563 #define BA_RJT_REASON_CODE_INVALID_COMMAND      0x1
 564 #define BA_RJT_REASON_CODE_UNABLE_TO_PERFORM    0x9
 565         uint8_t reserved;
 566 } __packed;
 567
 568 /*
 569  * ISP queue -  ABTS Response IOCB entry structure definition for 24xx.
 570  *              The ABTS response to the ABTS received is sent by the
 571  *              target driver to the ISP 24xx.
 572  *              The IOCB is placed on the request queue.
 573  */
 574 struct abts_resp_to_24xx {
 575         uint8_t  entry_type;                /* Entry type. */
 576         uint8_t  entry_count;               /* Entry count. */
 577         uint8_t  sys_define;                /* System defined. */
 578         uint8_t  entry_status;              /* Entry Status. */
 579         uint32_t handle;
 580         uint16_t reserved_1;
 581         uint16_t nport_handle;
 582         uint16_t control_flags;
 583 #define ABTS_CONTR_FLG_TERM_EXCHG       BIT_0
 584         uint8_t  vp_index;
 585         uint8_t  reserved_3:4;
 586         uint8_t  sof_type:4;
 587         uint32_t exchange_address;
 588         struct fcp_hdr_le fcp_hdr_le;
 589         union {
 590                 struct ba_acc_le ba_acct;
 591                 struct ba_rjt_le ba_rjt;
 592         } __packed payload;
 593         uint32_t reserved_4;
 594         uint32_t exchange_addr_to_abort;
 595 } __packed;
 596
 597 /*
 598  * ISP queue -  ABTS Response IOCB from ISP24xx Firmware entry structure.
 599  *              The ABTS response with completion status to the ABTS response
 600  *              (sent by the target driver to the ISP 24xx) is sent by the
 601  *              ISP24xx firmware to the target driver.
 602  *              The IOCB is placed on the response queue.
 603  */
 604 struct abts_resp_from_24xx_fw {
 605         uint8_t  entry_type;                /* Entry type. */
 606         uint8_t  entry_count;               /* Entry count. */
 607         uint8_t  sys_define;                /* System defined. */
 608         uint8_t  entry_status;              /* Entry Status. */
 609         uint32_t handle;
 610         uint16_t compl_status;
 611 #define ABTS_RESP_COMPL_SUCCESS         0
 612 #define ABTS_RESP_COMPL_SUBCODE_ERROR   0x31
 613         uint16_t nport_handle;
 614         uint16_t reserved_1;
 615         uint8_t  reserved_2;
 616         uint8_t  reserved_3:4;
 617         uint8_t  sof_type:4;
 618         uint32_t exchange_address;
 619         struct fcp_hdr_le fcp_hdr_le;
 620         uint8_t reserved_4[8];
 621         uint32_t error_subcode1;
 622 #define ABTS_RESP_SUBCODE_ERR_ABORTED_EXCH_NOT_TERM     0x1E
 623         uint32_t error_subcode2;
 624         uint32_t exchange_addr_to_abort;
 625 } __packed;
 626
 627 /********************************************************************\
 628  * Type Definitions used by initiator & target halves
 629 \********************************************************************/
 630
 631 struct qla_tgt_mgmt_cmd;
 632 struct qla_tgt_sess;
 633
 634 /*
 635  * This structure provides a template of function calls that the
 636  * target driver (from within qla_target.c) can issue to the
 637  * target module (tcm_qla2xxx).
 638  */
 639 struct qla_tgt_func_tmpl {
 640
 641         int (*handle_cmd)(struct scsi_qla_host *, struct qla_tgt_cmd *,
 642                         unsigned char *, uint32_t, int, int, int);
 643         void (*handle_data)(struct qla_tgt_cmd *);
 644         int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t,
 645                         uint32_t);
 646         void (*free_cmd)(struct qla_tgt_cmd *);
 647         void (*free_mcmd)(struct qla_tgt_mgmt_cmd *);
 648         void (*free_session)(struct qla_tgt_sess *);
 649
 650         int (*check_initiator_node_acl)(struct scsi_qla_host *, unsigned char *,
 651                                         void *, uint8_t *, uint16_t);
 652         void (*update_sess)(struct qla_tgt_sess *, port_id_t, uint16_t, bool);
 653         struct qla_tgt_sess *(*find_sess_by_loop_id)(struct scsi_qla_host *,
 654                                                 const uint16_t);
 655         struct qla_tgt_sess *(*find_sess_by_s_id)(struct scsi_qla_host *,
 656                                                 const uint8_t *);
 657         void (*clear_nacl_from_fcport_map)(struct qla_tgt_sess *);
 658         void (*put_sess)(struct qla_tgt_sess *);
 659         void (*shutdown_sess)(struct qla_tgt_sess *);
 660 };
 661
 662 int qla2x00_wait_for_hba_online(struct scsi_qla_host *);
 663
 664 #include <target/target_core_base.h>
 665
 666 #define QLA_TGT_TIMEOUT                 10      /* in seconds */
 667
 668 #define QLA_TGT_MAX_HW_PENDING_TIME     60 /* in seconds */
 669
 670 /* Immediate notify status constants */
 671 #define IMM_NTFY_LIP_RESET          0x000E
 672 #define IMM_NTFY_LIP_LINK_REINIT    0x000F
 673 #define IMM_NTFY_IOCB_OVERFLOW      0x0016
 674 #define IMM_NTFY_ABORT_TASK         0x0020
 675 #define IMM_NTFY_PORT_LOGOUT        0x0029
 676 #define IMM_NTFY_PORT_CONFIG        0x002A
 677 #define IMM_NTFY_GLBL_TPRLO         0x002D
 678 #define IMM_NTFY_GLBL_LOGO          0x002E
 679 #define IMM_NTFY_RESOURCE           0x0034
 680 #define IMM_NTFY_MSG_RX             0x0036
 681 #define IMM_NTFY_SRR                0x0045
 682 #define IMM_NTFY_ELS                0x0046
 683
 684 /* Immediate notify task flags */
 685 #define IMM_NTFY_TASK_MGMT_SHIFT    8
 686
 687 #define QLA_TGT_CLEAR_ACA               0x40
 688 #define QLA_TGT_TARGET_RESET            0x20
 689 #define QLA_TGT_LUN_RESET               0x10
 690 #define QLA_TGT_CLEAR_TS                0x04
 691 #define QLA_TGT_ABORT_TS                0x02
 692 #define QLA_TGT_ABORT_ALL_SESS          0xFFFF
 693 #define QLA_TGT_ABORT_ALL               0xFFFE
 694 #define QLA_TGT_NEXUS_LOSS_SESS         0xFFFD
 695 #define QLA_TGT_NEXUS_LOSS              0xFFFC
 696
 697 /* Notify Acknowledge flags */
 698 #define NOTIFY_ACK_RES_COUNT        BIT_8
 699 #define NOTIFY_ACK_CLEAR_LIP_RESET  BIT_5
 700 #define NOTIFY_ACK_TM_RESP_CODE_VALID BIT_4
 701
 702 /* Command's states */
 703 #define QLA_TGT_STATE_NEW               0 /* New command + target processing */
 704 #define QLA_TGT_STATE_NEED_DATA         1 /* target needs data to continue */
 705 #define QLA_TGT_STATE_DATA_IN           2 /* Data arrived + target processing */
 706 #define QLA_TGT_STATE_PROCESSED         3 /* target done processing */
 707 #define QLA_TGT_STATE_ABORTED           4 /* Command aborted */
 708
 709 /* Special handles */
 710 #define QLA_TGT_NULL_HANDLE     0
 711 #define QLA_TGT_SKIP_HANDLE     (0xFFFFFFFF & ~CTIO_COMPLETION_HANDLE_MARK)
 712
 713 /* ATIO task_codes field */
 714 #define ATIO_SIMPLE_QUEUE           0
 715 #define ATIO_HEAD_OF_QUEUE          1
 716 #define ATIO_ORDERED_QUEUE          2
 717 #define ATIO_ACA_QUEUE              4
 718 #define ATIO_UNTAGGED               5
 719
 720 /* TM failed response codes, see FCP (9.4.11 FCP_RSP_INFO) */
 721 #define FC_TM_SUCCESS               0
 722 #define FC_TM_BAD_FCP_DATA          1
 723 #define FC_TM_BAD_CMD               2
 724 #define FC_TM_FCP_DATA_MISMATCH     3
 725 #define FC_TM_REJECT                4
 726 #define FC_TM_FAILED                5
 727
 728 /*
 729  * Error code of qlt_pre_xmit_response() meaning that cmd's exchange was
 730  * terminated, so no more actions is needed and success should be returned
 731  * to target.
 732  */
 733 #define QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED       0x1717
 734
 735 #if (BITS_PER_LONG > 32) || defined(CONFIG_HIGHMEM64G)
 736 #define pci_dma_lo32(a) (a & 0xffffffff)
 737 #define pci_dma_hi32(a) ((((a) >> 16)>>16) & 0xffffffff)
 738 #else
 739 #define pci_dma_lo32(a) (a & 0xffffffff)
 740 #define pci_dma_hi32(a) 0
 741 #endif
 742
 743 #define QLA_TGT_SENSE_VALID(sense)  ((sense != NULL) && \
 744                                 (((const uint8_t *)(sense))[0] & 0x70) == 0x70)
 745
 746 struct qla_port_24xx_data {
 747         uint8_t port_name[WWN_SIZE];
 748         uint16_t loop_id;
 749         uint16_t reserved;
 750 };
 751
 752 struct qla_tgt {
 753         struct scsi_qla_host *vha;
 754         struct qla_hw_data *ha;
 755
 756         /*
 757          * To sync between IRQ handlers and qlt_target_release(). Needed,
 758          * because req_pkt() can drop/reaquire HW lock inside. Protected by
 759          * HW lock.
 760          */
 761         int irq_cmd_count;
 762
 763         int datasegs_per_cmd, datasegs_per_cont, sg_tablesize;
 764
 765         /* Target's flags, serialized by pha->hardware_lock */
 766         unsigned int tgt_enable_64bit_addr:1; /* 64-bits PCI addr enabled */
 767         unsigned int link_reinit_iocb_pending:1;
 768
 769         /*
 770          * Protected by tgt_mutex AND hardware_lock for writing and tgt_mutex
 771          * OR hardware_lock for reading.
 772          */
 773         int tgt_stop; /* the target mode driver is being stopped */
 774         int tgt_stopped; /* the target mode driver has been stopped */
 775
 776         /* Count of sessions refering qla_tgt. Protected by hardware_lock. */
 777         int sess_count;
 778
 779         /* Protected by hardware_lock. Addition also protected by tgt_mutex. */
 780         struct list_head sess_list;
 781
 782         /* Protected by hardware_lock */
 783         struct list_head del_sess_list;
 784         struct delayed_work sess_del_work;
 785
 786         spinlock_t sess_work_lock;
 787         struct list_head sess_works_list;
 788         struct work_struct sess_work;
 789
 790         struct imm_ntfy_from_isp link_reinit_iocb;
 791         wait_queue_head_t waitQ;
 792         int notify_ack_expected;
 793         int abts_resp_expected;
 794         int modify_lun_expected;
 795
 796         int ctio_srr_id;
 797         int imm_srr_id;
 798         spinlock_t srr_lock;
 799         struct list_head srr_ctio_list;
 800         struct list_head srr_imm_list;
 801         struct work_struct srr_work;
 802
 803         atomic_t tgt_global_resets_count;
 804
 805         struct list_head tgt_list_entry;
 806 };
 807
 808 /*
 809  * Equivilant to IT Nexus (Initiator-Target)
 810  */
 811 struct qla_tgt_sess {
 812         uint16_t loop_id;
 813         port_id_t s_id;
 814
 815         unsigned int conf_compl_supported:1;
 816         unsigned int deleted:1;
 817         unsigned int local:1;
 818
 819         struct se_session *se_sess;
 820         struct scsi_qla_host *vha;
 821         struct qla_tgt *tgt;
 822
 823         struct list_head sess_list_entry;
 824         unsigned long expires;
 825         struct list_head del_list_entry;
 826
 827         uint8_t port_name[WWN_SIZE];
 828         struct work_struct free_work;
 829 };
 830
 831 struct qla_tgt_cmd {
 832         struct qla_tgt_sess *sess;
 833         int state;
 834         struct se_cmd se_cmd;
 835         struct work_struct free_work;
 836         struct work_struct work;
 837         /* Sense buffer that will be mapped into outgoing status */
 838         unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER];
 839
 840         /* to save extra sess dereferences */
 841         unsigned int conf_compl_supported:1;
 842         unsigned int sg_mapped:1;
 843         unsigned int free_sg:1;
 844         unsigned int aborted:1; /* Needed in case of SRR */
 845         unsigned int write_data_transferred:1;
 846
 847         struct scatterlist *sg; /* cmd data buffer SG vector */
 848         int sg_cnt;             /* SG segments count */
 849         int bufflen;            /* cmd buffer length */
 850         int offset;
 851         uint32_t tag;
 852         uint32_t unpacked_lun;
 853         enum dma_data_direction dma_data_direction;
 854
 855         uint16_t loop_id;       /* to save extra sess dereferences */
 856         struct qla_tgt *tgt;    /* to save extra sess dereferences */
 857         struct scsi_qla_host *vha;
 858         struct list_head cmd_list;
 859
 860         struct atio_from_isp atio;
 861 };
 862
 863 struct qla_tgt_sess_work_param {
 864         struct list_head sess_works_list_entry;
 865
 866 #define QLA_TGT_SESS_WORK_ABORT 1
 867 #define QLA_TGT_SESS_WORK_TM    2
 868         int type;
 869
 870         union {
 871                 struct abts_recv_from_24xx abts;
 872                 struct imm_ntfy_from_isp tm_iocb;
 873                 struct atio_from_isp tm_iocb2;
 874         };
 875 };
 876
 877 struct qla_tgt_mgmt_cmd {
 878         uint8_t tmr_func;
 879         uint8_t fc_tm_rsp;
 880         struct qla_tgt_sess *sess;
 881         struct se_cmd se_cmd;
 882         struct work_struct free_work;
 883         unsigned int flags;
 884 #define QLA24XX_MGMT_SEND_NACK  1
 885         union {
 886                 struct atio_from_isp atio;
 887                 struct imm_ntfy_from_isp imm_ntfy;
 888                 struct abts_recv_from_24xx abts;
 889         } __packed orig_iocb;
 890 };
 891
 892 struct qla_tgt_prm {
 893         struct qla_tgt_cmd *cmd;
 894         struct qla_tgt *tgt;
 895         void *pkt;
 896         struct scatterlist *sg; /* cmd data buffer SG vector */
 897         int seg_cnt;
 898         int req_cnt;
 899         uint16_t rq_result;
 900         uint16_t scsi_status;
 901         unsigned char *sense_buffer;
 902         int sense_buffer_len;
 903         int residual;
 904         int add_status_pkt;
 905 };
 906
 907 struct qla_tgt_srr_imm {
 908         struct list_head srr_list_entry;
 909         int srr_id;
 910         struct imm_ntfy_from_isp imm_ntfy;
 911 };
 912
 913 struct qla_tgt_srr_ctio {
 914         struct list_head srr_list_entry;
 915         int srr_id;
 916         struct qla_tgt_cmd *cmd;
 917 };
 918
 919 #define QLA_TGT_XMIT_DATA               1
 920 #define QLA_TGT_XMIT_STATUS             2
 921 #define QLA_TGT_XMIT_ALL                (QLA_TGT_XMIT_STATUS|QLA_TGT_XMIT_DATA)
 922
 923
 924 extern struct qla_tgt_data qla_target;
 925 /*
 926  * Internal function prototypes
 927  */
 928 void qlt_disable_vha(struct scsi_qla_host *);
 929
 930 /*
 931  * Function prototypes for qla_target.c logic used by qla2xxx LLD code.
 932  */
 933 extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
 934 extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
 935 extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64,
 936                         int (*callback)(struct scsi_qla_host *), void *);
 937 extern void qlt_lport_deregister(struct scsi_qla_host *);
 938 extern void qlt_unreg_sess(struct qla_tgt_sess *);
 939 extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
 940 extern void qlt_fc_port_deleted(struct scsi_qla_host *, fc_port_t *);
 941 extern void qlt_set_mode(struct scsi_qla_host *ha);
 942 extern void qlt_clear_mode(struct scsi_qla_host *ha);
 943 extern int __init qlt_init(void);
 944 extern void qlt_exit(void);
 945 extern void qlt_update_vp_map(struct scsi_qla_host *, int);
 946
 947 /*
 948  * This macro is used during early initializations when host->active_mode
 949  * is not set. Right now, ha value is ignored.
 950  */
 951 #define QLA_TGT_MODE_ENABLED() (ql2x_ini_mode != QLA2XXX_INI_MODE_ENABLED)
 952 extern int ql2x_ini_mode;
 953
 954 static inline bool qla_tgt_mode_enabled(struct scsi_qla_host *ha)
 955 {
 956         return ha->host->active_mode & MODE_TARGET;
 957 }
 958
 959 static inline bool qla_ini_mode_enabled(struct scsi_qla_host *ha)
 960 {
 961         return ha->host->active_mode & MODE_INITIATOR;
 962 }
 963
 964 static inline void qla_reverse_ini_mode(struct scsi_qla_host *ha)
 965 {
 966         if (ha->host->active_mode & MODE_INITIATOR)
 967                 ha->host->active_mode &= ~MODE_INITIATOR;
 968         else
 969                 ha->host->active_mode |= MODE_INITIATOR;
 970 }
 971
 972 /*
 973  * Exported symbols from qla_target.c LLD logic used by qla2xxx code..
 974  */
 975 extern void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *,
 976         struct atio_from_isp *);
 977 extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, response_t *);
 978 extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *);
 979 extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t);
 980 extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *);
 981 extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *);
 982 extern void qlt_free_cmd(struct qla_tgt_cmd *cmd);
 983 extern void qlt_ctio_completion(struct scsi_qla_host *, uint32_t);
 984 extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *);
 985 extern void qlt_enable_vha(struct scsi_qla_host *);
 986 extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *);
 987 extern void qlt_rff_id(struct scsi_qla_host *, struct ct_sns_req *);
 988 extern void qlt_init_atio_q_entries(struct scsi_qla_host *);
 989 extern void qlt_24xx_process_atio_queue(struct scsi_qla_host *);
 990 extern void qlt_24xx_config_rings(struct scsi_qla_host *);
 991 extern void qlt_24xx_config_nvram_stage1(struct scsi_qla_host *,
 992         struct nvram_24xx *);
 993 extern void qlt_24xx_config_nvram_stage2(struct scsi_qla_host *,
 994         struct init_cb_24xx *);
 995 extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *,
 996         struct init_cb_81xx *);
 997 extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *,
 998         struct nvram_81xx *);
 999 extern int qlt_24xx_process_response_error(struct scsi_qla_host *,
1000         struct sts_entry_24xx *);
1001 extern void qlt_modify_vp_config(struct scsi_qla_host *,
1002         struct vp_config_entry_24xx *);
1003 extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *);
1004 extern int qlt_mem_alloc(struct qla_hw_data *);
1005 extern void qlt_mem_free(struct qla_hw_data *);
1006 extern void qlt_stop_phase1(struct qla_tgt *);
1007 extern void qlt_stop_phase2(struct qla_tgt *);
1008 extern irqreturn_t qla83xx_msix_atio_q(int, void *);
1009 extern void qlt_83xx_iospace_config(struct qla_hw_data *);
1010
1011 #endif /* __QLA_TARGET_H */