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