drivers/s390/scsi/zfcp_fsf.h

   1 /*
   2  * This file is part of the zfcp device driver for
   3  * FCP adapters for IBM System z9 and zSeries.
   4  *
   5  * (C) Copyright IBM Corp. 2002, 2006
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #ifndef FSF_H
  23 #define FSF_H
  24
  25 #define FSF_QTCB_CURRENT_VERSION                0x00000001
  26
  27 /* FSF commands */
  28 #define FSF_QTCB_FCP_CMND                       0x00000001
  29 #define FSF_QTCB_ABORT_FCP_CMND                 0x00000002
  30 #define FSF_QTCB_OPEN_PORT_WITH_DID             0x00000005
  31 #define FSF_QTCB_OPEN_LUN                       0x00000006
  32 #define FSF_QTCB_CLOSE_LUN                      0x00000007
  33 #define FSF_QTCB_CLOSE_PORT                     0x00000008
  34 #define FSF_QTCB_CLOSE_PHYSICAL_PORT            0x00000009
  35 #define FSF_QTCB_SEND_ELS                       0x0000000B
  36 #define FSF_QTCB_SEND_GENERIC                   0x0000000C
  37 #define FSF_QTCB_EXCHANGE_CONFIG_DATA           0x0000000D
  38 #define FSF_QTCB_EXCHANGE_PORT_DATA             0x0000000E
  39 #define FSF_QTCB_DOWNLOAD_CONTROL_FILE          0x00000012
  40 #define FSF_QTCB_UPLOAD_CONTROL_FILE            0x00000013
  41
  42 /* FSF QTCB types */
  43 #define FSF_IO_COMMAND                          0x00000001
  44 #define FSF_SUPPORT_COMMAND                     0x00000002
  45 #define FSF_CONFIG_COMMAND                      0x00000003
  46 #define FSF_PORT_COMMAND                        0x00000004
  47
  48 /* FSF control file upload/download operations' subtype and options */
  49 #define FSF_CFDC_OPERATION_SUBTYPE              0x00020001
  50 #define FSF_CFDC_OPTION_NORMAL_MODE             0x00000000
  51 #define FSF_CFDC_OPTION_FORCE                   0x00000001
  52 #define FSF_CFDC_OPTION_FULL_ACCESS             0x00000002
  53 #define FSF_CFDC_OPTION_RESTRICTED_ACCESS       0x00000004
  54
  55 /* FSF protocol states */
  56 #define FSF_PROT_GOOD                           0x00000001
  57 #define FSF_PROT_QTCB_VERSION_ERROR             0x00000010
  58 #define FSF_PROT_SEQ_NUMB_ERROR                 0x00000020
  59 #define FSF_PROT_UNSUPP_QTCB_TYPE               0x00000040
  60 #define FSF_PROT_HOST_CONNECTION_INITIALIZING   0x00000080
  61 #define FSF_PROT_FSF_STATUS_PRESENTED           0x00000100
  62 #define FSF_PROT_DUPLICATE_REQUEST_ID           0x00000200
  63 #define FSF_PROT_LINK_DOWN                      0x00000400
  64 #define FSF_PROT_REEST_QUEUE                    0x00000800
  65 #define FSF_PROT_ERROR_STATE                    0x01000000
  66
  67 /* FSF states */
  68 #define FSF_GOOD                                0x00000000
  69 #define FSF_PORT_ALREADY_OPEN                   0x00000001
  70 #define FSF_LUN_ALREADY_OPEN                    0x00000002
  71 #define FSF_PORT_HANDLE_NOT_VALID               0x00000003
  72 #define FSF_LUN_HANDLE_NOT_VALID                0x00000004
  73 #define FSF_HANDLE_MISMATCH                     0x00000005
  74 #define FSF_SERVICE_CLASS_NOT_SUPPORTED         0x00000006
  75 #define FSF_FCPLUN_NOT_VALID                    0x00000009
  76 #define FSF_ACCESS_DENIED                       0x00000010
  77 #define FSF_LUN_SHARING_VIOLATION               0x00000012
  78 #define FSF_FCP_COMMAND_DOES_NOT_EXIST          0x00000022
  79 #define FSF_DIRECTION_INDICATOR_NOT_VALID       0x00000030
  80 #define FSF_CMND_LENGTH_NOT_VALID               0x00000033
  81 #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED    0x00000040
  82 #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED     0x00000041
  83 #define FSF_ELS_COMMAND_REJECTED                0x00000050
  84 #define FSF_GENERIC_COMMAND_REJECTED            0x00000051
  85 #define FSF_OPERATION_PARTIALLY_SUCCESSFUL      0x00000052
  86 #define FSF_AUTHORIZATION_FAILURE               0x00000053
  87 #define FSF_CFDC_ERROR_DETECTED                 0x00000054
  88 #define FSF_CONTROL_FILE_UPDATE_ERROR           0x00000055
  89 #define FSF_CONTROL_FILE_TOO_LARGE              0x00000056
  90 #define FSF_ACCESS_CONFLICT_DETECTED            0x00000057
  91 #define FSF_CONFLICTS_OVERRULED                 0x00000058
  92 #define FSF_PORT_BOXED                          0x00000059
  93 #define FSF_LUN_BOXED                           0x0000005A
  94 #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE     0x0000005B
  95 #define FSF_PAYLOAD_SIZE_MISMATCH               0x00000060
  96 #define FSF_REQUEST_SIZE_TOO_LARGE              0x00000061
  97 #define FSF_RESPONSE_SIZE_TOO_LARGE             0x00000062
  98 #define FSF_SBAL_MISMATCH                       0x00000063
  99 #define FSF_OPEN_PORT_WITHOUT_PRLI              0x00000064
 100 #define FSF_ADAPTER_STATUS_AVAILABLE            0x000000AD
 101 #define FSF_FCP_RSP_AVAILABLE                   0x000000AF
 102 #define FSF_UNKNOWN_COMMAND                     0x000000E2
 103 #define FSF_UNKNOWN_OP_SUBTYPE                  0x000000E3
 104 #define FSF_INVALID_COMMAND_OPTION              0x000000E5
 105 /* #define FSF_ERROR                             0x000000FF  */
 106
 107 #define FSF_PROT_STATUS_QUAL_SIZE               16
 108 #define FSF_STATUS_QUALIFIER_SIZE               16
 109
 110 /* FSF status qualifier, recommendations */
 111 #define FSF_SQ_NO_RECOM                         0x00
 112 #define FSF_SQ_FCP_RSP_AVAILABLE                0x01
 113 #define FSF_SQ_RETRY_IF_POSSIBLE                0x02
 114 #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED       0x03
 115 #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE       0x04
 116 #define FSF_SQ_ULP_PROGRAMMING_ERROR            0x05
 117 #define FSF_SQ_COMMAND_ABORTED                  0x06
 118 #define FSF_SQ_NO_RETRY_POSSIBLE                0x07
 119
 120 /* FSF status qualifier for CFDC commands */
 121 #define FSF_SQ_CFDC_HARDENED_ON_SE              0x00000000
 122 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE      0x00000001
 123 #define FSF_SQ_CFDC_COULD_NOT_HARDEN_ON_SE2     0x00000002
 124 /* CFDC subtable codes */
 125 #define FSF_SQ_CFDC_SUBTABLE_OS                 0x0001
 126 #define FSF_SQ_CFDC_SUBTABLE_PORT_WWPN          0x0002
 127 #define FSF_SQ_CFDC_SUBTABLE_PORT_DID           0x0003
 128 #define FSF_SQ_CFDC_SUBTABLE_LUN                0x0004
 129
 130 /* FSF status qualifier (most significant 4 bytes), local link down */
 131 #define FSF_PSQ_LINK_NO_LIGHT                   0x00000004
 132 #define FSF_PSQ_LINK_WRAP_PLUG                  0x00000008
 133 #define FSF_PSQ_LINK_NO_FCP                     0x00000010
 134 #define FSF_PSQ_LINK_FIRMWARE_UPDATE            0x00000020
 135 #define FSF_PSQ_LINK_INVALID_WWPN               0x00000100
 136 #define FSF_PSQ_LINK_NO_NPIV_SUPPORT            0x00000200
 137 #define FSF_PSQ_LINK_NO_FCP_RESOURCES           0x00000400
 138 #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES        0x00000800
 139 #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE        0x00001000
 140 #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED  0x00002000
 141 #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED       0x00004000
 142 #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT         0x00008000
 143
 144 /* payload size in status read buffer */
 145 #define FSF_STATUS_READ_PAYLOAD_SIZE            4032
 146
 147 /* number of status read buffers that should be sent by ULP */
 148 #define FSF_STATUS_READS_RECOM                  16
 149
 150 /* status types in status read buffer */
 151 #define FSF_STATUS_READ_PORT_CLOSED             0x00000001
 152 #define FSF_STATUS_READ_INCOMING_ELS            0x00000002
 153 #define FSF_STATUS_READ_SENSE_DATA_AVAIL        0x00000003
 154 #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD     0x00000004
 155 #define FSF_STATUS_READ_LINK_DOWN               0x00000005
 156 #define FSF_STATUS_READ_LINK_UP                 0x00000006
 157 #define FSF_STATUS_READ_NOTIFICATION_LOST       0x00000009
 158 #define FSF_STATUS_READ_CFDC_UPDATED            0x0000000A
 159 #define FSF_STATUS_READ_CFDC_HARDENED           0x0000000B
 160 #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT    0x0000000C
 161
 162 /* status subtypes in status read buffer */
 163 #define FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT     0x00000001
 164 #define FSF_STATUS_READ_SUB_ERROR_PORT          0x00000002
 165
 166 /* status subtypes for link down */
 167 #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK    0x00000000
 168 #define FSF_STATUS_READ_SUB_FDISC_FAILED        0x00000001
 169 #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE     0x00000002
 170
 171 /* status subtypes for unsolicited status notification lost */
 172 #define FSF_STATUS_READ_SUB_INCOMING_ELS        0x00000001
 173 #define FSF_STATUS_READ_SUB_SENSE_DATA          0x00000002
 174 #define FSF_STATUS_READ_SUB_LINK_STATUS         0x00000004
 175 #define FSF_STATUS_READ_SUB_PORT_CLOSED         0x00000008
 176 #define FSF_STATUS_READ_SUB_BIT_ERROR_THRESHOLD 0x00000010
 177 #define FSF_STATUS_READ_SUB_ACT_UPDATED         0x00000020
 178 #define FSF_STATUS_READ_SUB_ACT_HARDENED        0x00000040
 179 #define FSF_STATUS_READ_SUB_FEATURE_UPDATE_ALERT 0x00000080
 180
 181 /* status subtypes for CFDC */
 182 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE 0x00000002
 183 #define FSF_STATUS_READ_SUB_CFDC_HARDENED_ON_SE2 0x0000000F
 184
 185 /* topologie that is detected by the adapter */
 186 #define FSF_TOPO_ERROR                          0x00000000
 187 #define FSF_TOPO_P2P                            0x00000001
 188 #define FSF_TOPO_FABRIC                         0x00000002
 189 #define FSF_TOPO_AL                             0x00000003
 190
 191 /* data direction for FCP commands */
 192 #define FSF_DATADIR_WRITE                       0x00000001
 193 #define FSF_DATADIR_READ                        0x00000002
 194 #define FSF_DATADIR_READ_WRITE                  0x00000003
 195 #define FSF_DATADIR_CMND                        0x00000004
 196
 197 /* fc service class */
 198 #define FSF_CLASS_1                             0x00000001
 199 #define FSF_CLASS_2                             0x00000002
 200 #define FSF_CLASS_3                             0x00000003
 201
 202 /* SBAL chaining */
 203 #define FSF_MAX_SBALS_PER_REQ                   36
 204 #define FSF_MAX_SBALS_PER_ELS_REQ               2
 205
 206 /* logging space behind QTCB */
 207 #define FSF_QTCB_LOG_SIZE                       1024
 208
 209 /* channel features */
 210 #define FSF_FEATURE_CFDC                        0x00000002
 211 #define FSF_FEATURE_LUN_SHARING                 0x00000004
 212 #define FSF_FEATURE_NOTIFICATION_LOST           0x00000008
 213 #define FSF_FEATURE_HBAAPI_MANAGEMENT           0x00000010
 214 #define FSF_FEATURE_ELS_CT_CHAINED_SBALS        0x00000020
 215 #define FSF_FEATURE_UPDATE_ALERT                0x00000100
 216
 217 /* host connection features */
 218 #define FSF_FEATURE_NPIV_MODE                   0x00000001
 219 #define FSF_FEATURE_VM_ASSIGNED_WWPN            0x00000002
 220
 221 /* option */
 222 #define FSF_OPEN_LUN_SUPPRESS_BOXING            0x00000001
 223 #define FSF_OPEN_LUN_REPLICATE_SENSE            0x00000002
 224
 225 /* adapter types */
 226 #define FSF_ADAPTER_TYPE_FICON                  0x00000001
 227 #define FSF_ADAPTER_TYPE_FICON_EXPRESS          0x00000002
 228
 229 /* port types */
 230 #define FSF_HBA_PORTTYPE_UNKNOWN                0x00000001
 231 #define FSF_HBA_PORTTYPE_NOTPRESENT             0x00000003
 232 #define FSF_HBA_PORTTYPE_NPORT                  0x00000005
 233 #define FSF_HBA_PORTTYPE_PTP                    0x00000021
 234 /* following are not defined and used by FSF Spec
 235    but are additionally defined by FC-HBA */
 236 #define FSF_HBA_PORTTYPE_OTHER                  0x00000002
 237 #define FSF_HBA_PORTTYPE_NOTPRESENT             0x00000003
 238 #define FSF_HBA_PORTTYPE_NLPORT                 0x00000006
 239 #define FSF_HBA_PORTTYPE_FLPORT                 0x00000007
 240 #define FSF_HBA_PORTTYPE_FPORT                  0x00000008
 241 #define FSF_HBA_PORTTYPE_LPORT                  0x00000020
 242
 243 /* port states */
 244 #define FSF_HBA_PORTSTATE_UNKNOWN               0x00000001
 245 #define FSF_HBA_PORTSTATE_ONLINE                0x00000002
 246 #define FSF_HBA_PORTSTATE_OFFLINE               0x00000003
 247 #define FSF_HBA_PORTSTATE_LINKDOWN              0x00000006
 248 #define FSF_HBA_PORTSTATE_ERROR                 0x00000007
 249
 250 /* IO states of adapter */
 251 #define FSF_IOSTAT_NPORT_RJT                    0x00000004
 252 #define FSF_IOSTAT_FABRIC_RJT                   0x00000005
 253 #define FSF_IOSTAT_LS_RJT                       0x00000009
 254
 255 /* open LUN access flags*/
 256 #define FSF_UNIT_ACCESS_OPEN_LUN_ALLOWED        0x01000000
 257 #define FSF_UNIT_ACCESS_EXCLUSIVE               0x02000000
 258 #define FSF_UNIT_ACCESS_OUTBOUND_TRANSFER       0x10000000
 259
 260 struct fsf_queue_designator {
 261         u8  cssid;
 262         u8  chpid;
 263         u8  hla;
 264         u8  ua;
 265         u32 res1;
 266 } __attribute__ ((packed));
 267
 268 struct fsf_port_closed_payload {
 269         struct fsf_queue_designator queue_designator;
 270         u32                         port_handle;
 271 } __attribute__ ((packed));
 272
 273 struct fsf_bit_error_payload {
 274         u32 res1;
 275         u32 link_failure_error_count;
 276         u32 loss_of_sync_error_count;
 277         u32 loss_of_signal_error_count;
 278         u32 primitive_sequence_error_count;
 279         u32 invalid_transmission_word_error_count;
 280         u32 crc_error_count;
 281         u32 primitive_sequence_event_timeout_count;
 282         u32 elastic_buffer_overrun_error_count;
 283         u32 fcal_arbitration_timeout_count;
 284         u32 advertised_receive_b2b_credit;
 285         u32 current_receive_b2b_credit;
 286         u32 advertised_transmit_b2b_credit;
 287         u32 current_transmit_b2b_credit;
 288 } __attribute__ ((packed));
 289
 290 struct fsf_status_read_buffer {
 291         u32 status_type;
 292         u32 status_subtype;
 293         u32 length;
 294         u32 res1;
 295         struct fsf_queue_designator queue_designator;
 296         u32 d_id;
 297         u32 class;
 298         u64 fcp_lun;
 299         u8  res3[24];
 300         u8  payload[FSF_STATUS_READ_PAYLOAD_SIZE];
 301 } __attribute__ ((packed));
 302
 303 struct fsf_qual_version_error {
 304         u32 fsf_version;
 305         u32 res1[3];
 306 } __attribute__ ((packed));
 307
 308 struct fsf_qual_sequence_error {
 309         u32 exp_req_seq_no;
 310         u32 res1[3];
 311 } __attribute__ ((packed));
 312
 313 struct fsf_link_down_info {
 314         u32 error_code;
 315         u32 res1;
 316         u8 res2[2];
 317         u8 primary_status;
 318         u8 ioerr_code;
 319         u8 action_code;
 320         u8 reason_code;
 321         u8 explanation_code;
 322         u8 vendor_specific_code;
 323 } __attribute__ ((packed));
 324
 325 union fsf_prot_status_qual {
 326         u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)];
 327         struct fsf_qual_version_error   version_error;
 328         struct fsf_qual_sequence_error  sequence_error;
 329         struct fsf_link_down_info link_down_info;
 330 } __attribute__ ((packed));
 331
 332 struct fsf_qtcb_prefix {
 333         u64 req_id;
 334         u32 qtcb_version;
 335         u32 ulp_info;
 336         u32 qtcb_type;
 337         u32 req_seq_no;
 338         u32 prot_status;
 339         union fsf_prot_status_qual prot_status_qual;
 340         u8  res1[20];
 341 } __attribute__ ((packed));
 342
 343 union fsf_status_qual {
 344         u8  byte[FSF_STATUS_QUALIFIER_SIZE];
 345         u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)];
 346         u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)];
 347         u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)];
 348         struct fsf_queue_designator fsf_queue_designator;
 349         struct fsf_link_down_info link_down_info;
 350 } __attribute__ ((packed));
 351
 352 struct fsf_qtcb_header {
 353         u64 req_handle;
 354         u32 fsf_command;
 355         u32 res1;
 356         u32 port_handle;
 357         u32 lun_handle;
 358         u32 res2;
 359         u32 fsf_status;
 360         union fsf_status_qual fsf_status_qual;
 361         u8  res3[28];
 362         u16 log_start;
 363         u16 log_length;
 364         u8  res4[16];
 365 } __attribute__ ((packed));
 366
 367 struct fsf_nport_serv_param {
 368         u8  common_serv_param[16];
 369         u64 wwpn;
 370         u64 wwnn;
 371         u8  class1_serv_param[16];
 372         u8  class2_serv_param[16];
 373         u8  class3_serv_param[16];
 374         u8  class4_serv_param[16];
 375         u8  vendor_version_level[16];
 376 } __attribute__ ((packed));
 377
 378 struct fsf_plogi {
 379         u32    code;
 380         struct fsf_nport_serv_param serv_param;
 381 } __attribute__ ((packed));
 382
 383 #define FSF_FCP_CMND_SIZE       288
 384 #define FSF_FCP_RSP_SIZE        128
 385
 386 struct fsf_qtcb_bottom_io {
 387         u32 data_direction;
 388         u32 service_class;
 389         u8  res1[8];
 390         u32 fcp_cmnd_length;
 391         u8  res2[12];
 392         u8  fcp_cmnd[FSF_FCP_CMND_SIZE];
 393         u8  fcp_rsp[FSF_FCP_RSP_SIZE];
 394         u8  res3[64];
 395 } __attribute__ ((packed));
 396
 397 struct fsf_qtcb_bottom_support {
 398         u32 operation_subtype;
 399         u8  res1[12];
 400         u32 d_id;
 401         u32 option;
 402         u64 fcp_lun;
 403         u64 res2;
 404         u64 req_handle;
 405         u32 service_class;
 406         u8  res3[3];
 407         u8  timeout;
 408         u32 lun_access_info;
 409         u8  res4[180];
 410         u32 els1_length;
 411         u32 els2_length;
 412         u32 req_buf_length;
 413         u32 resp_buf_length;
 414         u8  els[256];
 415 } __attribute__ ((packed));
 416
 417 struct fsf_qtcb_bottom_config {
 418         u32 lic_version;
 419         u32 feature_selection;
 420         u32 high_qtcb_version;
 421         u32 low_qtcb_version;
 422         u32 max_qtcb_size;
 423         u32 max_data_transfer_size;
 424         u32 adapter_features;
 425         u32 connection_features;
 426         u32 fc_topology;
 427         u32 fc_link_speed;
 428         u32 adapter_type;
 429         u32 peer_d_id;
 430         u8 res2[12];
 431         u32 s_id;
 432         struct fsf_nport_serv_param nport_serv_param;
 433         u8 reserved_nport_serv_param[16];
 434         u8 res3[8];
 435         u32 adapter_ports;
 436         u32 hardware_version;
 437         u8 serial_number[32];
 438         struct fsf_nport_serv_param plogi_payload;
 439         u8 res4[160];
 440 } __attribute__ ((packed));
 441
 442 struct fsf_qtcb_bottom_port {
 443         u64 wwpn;
 444         u32 fc_port_id;
 445         u32 port_type;
 446         u32 port_state;
 447         u32 class_of_service;   /* should be 0x00000006 for class 2 and 3 */
 448         u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */
 449         u8 active_fc4_types[32];
 450         u32 supported_speed;    /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */
 451         u32 maximum_frame_size; /* fixed value of 2112 */
 452         u64 seconds_since_last_reset;
 453         u64 tx_frames;
 454         u64 tx_words;
 455         u64 rx_frames;
 456         u64 rx_words;
 457         u64 lip;                /* 0 */
 458         u64 nos;                /* currently 0 */
 459         u64 error_frames;       /* currently 0 */
 460         u64 dumped_frames;      /* currently 0 */
 461         u64 link_failure;
 462         u64 loss_of_sync;
 463         u64 loss_of_signal;
 464         u64 psp_error_counts;
 465         u64 invalid_tx_words;
 466         u64 invalid_crcs;
 467         u64 input_requests;
 468         u64 output_requests;
 469         u64 control_requests;
 470         u64 input_mb;           /* where 1 MByte == 1.000.000 Bytes */
 471         u64 output_mb;          /* where 1 MByte == 1.000.000 Bytes */
 472         u8 res2[256];
 473 } __attribute__ ((packed));
 474
 475 union fsf_qtcb_bottom {
 476         struct fsf_qtcb_bottom_io      io;
 477         struct fsf_qtcb_bottom_support support;
 478         struct fsf_qtcb_bottom_config  config;
 479         struct fsf_qtcb_bottom_port port;
 480 };
 481
 482 struct fsf_qtcb {
 483         struct fsf_qtcb_prefix prefix;
 484         struct fsf_qtcb_header header;
 485         union  fsf_qtcb_bottom bottom;
 486         u8 log[FSF_QTCB_LOG_SIZE];
 487 } __attribute__ ((packed));
 488
 489 #endif                          /* FSF_H */